A portable coal sampling tool

Abstract

This utility model relates to the field of coal testing technology and discloses a portable coal sampling tool, which includes a cylindrical shovel head with a rod connected to its root. The shovel head has a beveled opening with a pointed tip at the front end. The rod is a tubular structure with a hollow inner cavity that connects to the shovel head. This utility model significantly improves penetration capability by concentrating impact force through the pointed tip and beveled opening of the shovel head, reducing insertion resistance through the conical structure, and utilizing the inertial impact of the sliding sleeve against the stop platform, ensuring the acquisition of deep, representative samples. The rod is designed as a tubular temporary storage chamber, connecting to the shovel head for direct sample storage. A flip-up baffle can close the inner cavity, allowing for independent storage of multiple batches of samples, avoiding cross-contamination, eliminating the need for additional containers, and simplifying operation. The inner walls of the shovel head and rod are coated with a polytetrafluoroethylene (PTFE) anti-stick layer, reducing residue and cleaning burden. The detachable connection design improves maintenance convenience and portability, and optimizes sampling efficiency and reliability.

Description

Technical Field

[0001] This utility model relates to the field of coal detection technology, and in particular to a portable coal sampling tool. Background Technology

[0002] Coal sampling is a fundamental step in coal testing, and the representativeness and accuracy of the samples directly affect the reliability of subsequent coal quality analysis. Currently, coal sampling tools have the following shortcomings in practical use: First, insufficient penetration capability, making it difficult to reach deep into coal piles for sampling, especially in winter when the surface of coal piles freezes to varying degrees due to water mist spraying to suppress dust. Traditional tools struggle to penetrate this frozen layer, preventing the acquisition of representative samples. Second, limited functionality, lacking sample storage capabilities. Sampling personnel must carry both the sampling tool and a collection container, making operations cumbersome in complex environments like coal piles and increasing the risk of sample spillage or contamination. Third, coal easily adheres to the shovel head and inner wall due to moisture and stickiness, making cleaning difficult. This not only affects the accuracy of single-sample volumes but also leads to cross-contamination between different batches of samples, increasing testing errors.

[0003] Therefore, developing a new type of portable coal sampling tool that combines strong penetration, sample storage function and anti-stick properties to meet the sampling needs in complex environments is an urgent problem to be solved in the current coal testing field. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems by providing a portable coal sampling tool to meet sampling needs in complex environments. The technical solution adopted by this utility model is as follows: A portable coal sampling tool includes a cylindrical shovel head with a rod connected to its root. The shovel head has a beveled opening with a pointed tip at the front end. The rod is a tubular structure with a hollow inner cavity that communicates with the shovel head.

[0005] Preferably, the shovel head has a conical structure.

[0006] Preferably, a flip-up baffle is provided inside the hollow cavity. The flip-up baffle is a circular plate-shaped structure corresponding to the inner diameter of the rod. A rotating shaft is fixedly connected to the flip-up baffle, and the two ends of the rotating shaft are rotatably connected to the rod.

[0007] Preferably, the outer edge of the flip-up baffle is provided with a flexible ring, which can contact and seal with the inner diameter of the rod, and the flexible ring is made of silicone.

[0008] Preferably, a sliding sleeve is fitted onto the rod body, the sliding sleeve is axially slidably connected to the rod body, and a stop plate is fixedly provided at the lower end of the rod body corresponding to the sliding sleeve to limit the downward limit position of the sliding sleeve.

[0009] Preferably, the inner wall of the shovel head is coated with an anti-stick layer, which is made of polytetrafluoroethylene.

[0010] Preferably, the shovel head is detachably connected to the rod body, and the rod body also adopts a detachably connected split structure.

[0011] Preferably, the rod is provided with a depth scale, which is a groove mark engraved on the outer wall of the rod to indicate the depth to which the sampling tool enters the coal pile. The beneficial effects of this utility model are as follows: Addressing the problem of insufficient penetration ability, especially the difficulty of sampling frozen coal piles in winter, this utility model concentrates impact force through the tip of the shovel head and the oblique opening, reduces insertion resistance through the conical structure, and, combined with the inertial impact of the sliding sleeve striking the stop platform, significantly improves penetration ability, ensuring the acquisition of deep, representative samples. Addressing the issues of lacking sample storage function and cumbersome operation, the rod body is designed as a tubular storage chamber, connected to the shovel head for direct sample storage. A flip-up baffle can seal the inner cavity, allowing for independent storage of multiple batches of samples, avoiding cross-contamination, and eliminating the need for additional containers, greatly simplifying operation. Addressing the problem of coal easily adhering to the inner wall, the inner walls of the shovel head and rod are coated with a polytetrafluoroethylene anti-sticking layer, reducing residue and cleaning burden. The detachable connection design improves maintenance convenience and portability, and optimizes sampling efficiency and reliability. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 A cross-sectional view.

[0015] In the diagram: 10--Shovel head; 11--Opening; 12--Pointed head; 20--Rod body; 21--Hollow inner cavity; 22--Flipping baffle; 23--Rotating shaft; 24--Flexible ring; 25--Sliding sleeve; 26--Stop platform; 27--Anti-stick layer; 28--Depth gauge. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] like Figure 1-2As shown, a portable coal sampling tool includes a cylindrical shovel head 10, with a rod body 20 connected to the base of the shovel head 10. The shovel head 10 has a beveled opening 11 as the sample inlet, and a pointed tip 12 at the front end of the opening 11. The pointed tip 12 is designed to concentrate impact force, making it easier to break through ice and penetrate into the coal pile when facing a frozen coal pile surface. This significantly improves the sampling tool's penetration ability through hard surfaces, ensuring successful acquisition of samples from inside the coal pile. This embodiment enhances the tool's adaptability to frozen coal piles, solves the problem of traditional tools struggling to penetrate ice layers, and improves sampling efficiency.

[0018] Preferably, the shovel head 10 has a conical structure, which is more in line with the principles of fluid mechanics and facilitates sampling deep into the coal pile. At the same time, the inner wall of the conical structure is designed to taper, which can form a certain aggregation effect on the sample during the sampling return, reducing the amount of sample flowing back into the coal pile from the opening 11 of the shovel head 10 and ensuring the stability of the single sampling amount.

[0019] Preferably, the rod 20 is a tubular structure with a hollow inner cavity 21, which connects to the shovel head 10 and can serve as a temporary storage chamber for coal samples. During sampling, the coal sample collected by the shovel head 10 can directly enter the hollow inner cavity 21 of the rod 20. Operators do not need to carry additional collection containers; they can simply flip the sampling tool to temporarily store the sample. When it is necessary to transfer the sample, flipping the tool again will empty the sample from the inner cavity. This embodiment integrates sampling and temporary storage functions, eliminating the need for operators to carry collection containers simultaneously, reducing the burden on sampling personnel, and simplifying the workflow. It is particularly suitable for mobile sampling scenarios.

[0020] Preferably, a flip-up baffle 22 is provided in the hollow cavity 21 within the rod 20 to close the hollow cavity 21. The flip-up baffle 22 is a circular plate-shaped structure corresponding to the inner diameter of the rod 20. A rotating shaft 23 is fixedly connected to the flip-up baffle 22. The two ends of the rotating shaft 23 are rotatably connected to the rod 20, allowing the flip-up baffle 22 to rotate radially along the hollow cavity 21 around the rotating shaft 23, thereby opening or closing the hollow cavity. During sampling, the flip-up baffle 22 is in a vertical position, keeping the hollow cavity 21 open. After the sample collected by the shovel head 10 falls smoothly into the hollow cavity 21, the rotating shaft 23 is turned to flip the flip-up baffle 22 to a horizontal position, closing the hollow cavity 21. At this time, the sample in the hollow cavity 21 is sealed and preserved, allowing operators to continue sampling at other locations without mixing different batches of samples. This embodiment enables independent temporary storage of multiple batches and multiple sampling points, avoiding cross-contamination and meeting the needs of multi-sample comparative analysis in coal testing.

[0021] Preferably, a flexible ring 24 is provided on the outer edge of the flipping baffle 22 to improve the jamming situation between the flipping baffle 22 and the hollow inner cavity 21. The flexible ring can contact and seal with the inner diameter of the rod body 20. The flexible ring 24 is preferably made of silicone. Utilizing the good elasticity and wear resistance of silicone, it can fill the gap between the flipping baffle 22 and the inner cavity wall, enhance the sealing performance, and reduce the frictional resistance during the flipping process, avoiding the baffle from being unable to open and close smoothly due to coal particles getting stuck. This improves the smoothness of operation and sealing reliability of the flipping baffle 22 and reduces the maintenance frequency. At the same time, the frictional contact between the flexible ring 24 and the inner cavity of the rod body 20 can provide a certain rotational damping for the movement of the flipping baffle 22, preventing the flipping baffle from randomly flipping freely.

[0022] Preferably, a sliding sleeve 25 is fitted onto the rod body 20, and the sliding sleeve 25 is axially slidably connected to the rod body 20. A stop 26 is fixedly provided at the lower end of the rod body 20 corresponding to the sliding sleeve 25 to limit the downward limit of the sliding sleeve 25. During sampling, the operator can hold the sliding sleeve 25 and quickly descend it, using the inertial impact force generated by the sliding sleeve 25 hitting the stop 26 to assist the shovel head 10 in breaking through the hard coal layer on the surface of the coal pile or reaching deep into the coal pile for sampling. This embodiment enhances the tool's penetration ability, and is especially suitable for sampling frozen coal piles or dense coal seams in winter, eliminating the need for direct manual pressure and reducing the physical exertion of the operator. At the same time, the vibration generated by the sliding sleeve 25 hitting the stop 26 can effectively suppress the adhesion of coal particles.

[0023] Preferably, the inner wall of the shovel head 10 and the inner wall of the rod body 20 are coated with an anti-sticking layer 27, which is preferably made of polytetrafluoroethylene (PTFE). PTFE has extremely low surface tension, making it difficult for coal particles to adhere, thus reducing coal residue residue on the inner wall of the tool after sampling, ensuring the purity of each sample, and reducing the difficulty and frequency of tool cleaning.

[0024] Preferably, the shovel head 10 is detachably connected to the rod body 20. When the shovel head 10 becomes worn or deformed due to long-term use, it can be replaced separately without scrapping the entire tool. The rod body 20 also adopts a detachable split structure for easy maintenance, convenient disassembly and storage of the tool, and reduced space occupation during carrying. The detachable connection can be a threaded connection or a snap-fit ​​connection.

[0025] Preferably, the rod body 20 is provided with a depth scale 28, which is a groove mark engraved on the outer wall of the rod body 20 to mark the depth of the sampling tool entering the coal pile, so that the operator can understand the sampling depth in real time. The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A portable coal sampling tool, characterized in that: The shovel head (10) includes a cylindrical structure. A rod (20) is connected to the root of the shovel head (10). The shovel head (10) has a beveled opening (11) with a pointed head (12) at the front end of the opening (11). The rod (20) is a tubular structure with a hollow inner cavity (21) that is connected to the shovel head (10).

2. The portable coal sampling tool according to claim 1, characterized in that: The shovel head (10) has a conical structure.

3. The portable coal sampling tool according to claim 1, characterized in that: A flip baffle (22) is provided inside the hollow inner cavity (21). The flip baffle (22) is a circular plate structure corresponding to the inner diameter of the rod (20). A rotating shaft (23) is fixedly connected to the flip baffle (22). The two ends of the rotating shaft (23) are rotatably connected to the rod (20).

4. A portable coal sampling tool according to claim 3, characterized in that: The outer edge of the flip baffle (22) is provided with a flexible ring (24), which can contact and seal with the inner diameter of the rod (20). The flexible ring (24) is made of silicone.

5. A portable coal sampling tool according to claim 1, characterized in that: A sliding sleeve (25) is fitted on the rod body (20), and the sliding sleeve (25) is axially slidably connected to the rod body (20). A stop plate (26) is fixedly provided at the lower end of the rod body (20) corresponding to the sliding sleeve (25) to limit the downward limit position of the sliding sleeve (25).

6. A portable coal sampling tool according to claim 1, characterized in that: The inner wall of the shovel head (10) and the inner wall of the rod body (20) are coated with an anti-stick layer (27), which is made of polytetrafluoroethylene.

7. A portable coal sampling tool according to claim 1, characterized in that: The shovel head (10) is detachably connected to the rod body (20), and the rod body (20) also adopts a detachably connected split structure.

8. A portable coal sampling tool according to claim 1, characterized in that: The rod (20) is provided with a depth scale (28), which is a groove mark engraved on the outer wall of the rod (20) to indicate the depth of the sampling tool entering the coal pile.

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