Stone coal sampling mechanism

Abstract

The utility model belongs to the technical field of coal sample collection of a coal preparation plant, and discloses a slack coal sampling mechanism which comprises a blanking chute, a box body communicated with the blanking chute is welded on the side wall of the blanking chute, a horizontal and rotatable rotating shaft is arranged at the bottom of the side wall, close to the blanking chute, of the box body, a turning plate capable of blocking the box body is arranged on the rotating shaft, and the turning plate is connected with the blanking chute. One end of the rotating shaft penetrates through the box body and then is connected with a handle, the handle is provided with a limiter for locking the opening angle of the turning plate, the bottom of the box body is connected with a sampling pipeline, the tail end of the sampling pipeline is connected with a material receiving box, and the box body is connected with an openable box cover. The sampling operation can be completed by welding the box body and matching with the sampling pipeline and the turning plate, and the traditional shutdown sampling is not needed, so that the sampling efficiency is greatly improved, and meanwhile, the occurrence of safety accidents can be effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of coal sample collection technology in coal preparation plants, and specifically relates to a fine coal sampling mechanism. Background Technology

[0002] Fine coal sampling is a method for testing coal quality. Traditional fine coal sampling methods require stopping the washing and beneficiation system and involve collaborative operation by production workers and laboratory technicians. The specific process includes steps such as powering off the conveyor belt, checking for electricity, tagging, and locking, with the entire sampling process taking approximately 15 minutes. This results in low production efficiency and poses safety hazards, specifically: 1. Shutdown operations require multi-positional collaboration, increasing the risk of misoperation or accidental system startup; 2. The entire system uses high-voltage electricity, and manual contact with live equipment or moving parts during sampling can easily lead to accidents; 3. Frequent system startups accelerate equipment wear, increasing failure rates and subsequent maintenance costs; 4. Current technology primarily relies on manual sampling, making it difficult to accurately control the sample volume, potentially leading to data deviations and affecting the accuracy of quality analysis; 5. Sampling in open environments easily causes coal dust to fly, polluting the working environment and endangering personnel health. Therefore, improvements to existing fine coal sampling methods are necessary. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the background technology and provide a fine coal sampling mechanism. This sampling mechanism can realize online automatic sampling, reduce the number of shutdowns, thereby ensuring washing efficiency, and at the same time avoid the safety hazards of manual operation.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A fine coal sampling mechanism includes a feeding chute, a box body connected to the feeding chute is welded to the side wall of the feeding chute, a horizontal and rotatable shaft is installed at the bottom of the side wall of the box body near the feeding chute, a flap that can block the box body is installed on the shaft, one end of the shaft passes through the box body and is connected to a handle, a limiter for locking the opening angle of the flap is installed on the handle, a sampling pipe is connected to the bottom of the box body, a receiving box is connected to the end of the sampling pipe, and an openable box cover is connected to the box body.

[0006] The limiter restricts the rotation angle of the flap to 30-60° via a handle.

[0007] The limiter includes multiple pull rods of different lengths. One end of each pull rod is fitted onto a handle, and the other end is provided with a hook. The side wall of the discharge chute is machined with a groove that mates with the hook.

[0008] The beneficial effects of the coal dust sampling mechanism provided by this utility model are:

[0009] (1) By welding the box body on the feeding chute and the sampling pipe on the box body, when using it, you only need to install the sampler on the sampling pipe, then open the box body, and the fine coal in the feeding chute can be introduced into the box body for sampling. After closing the flap, the sampling operation can be completed. There is no need for traditional shutdown sampling, which greatly improves the sampling efficiency and can effectively avoid the occurrence of safety accidents.

[0010] (2) By setting a limiter, the angle of the flip plate can be locked, thereby ensuring the stability of the flip plate position and controlling the sampling amount. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a structural schematic diagram provided for an embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure provided for an embodiment of the present utility model.

[0014] Figure 3 A schematic diagram illustrating the usage state of this utility model embodiment.

[0015] Figure 4 This is a schematic diagram of the internal usage state provided for an embodiment of the present utility model.

[0016] The markings in the diagram are: 1. Feed chute; 2. Slot; 3. Box body; 4. Box cover; 5. Shaft; 6. Flip plate; 7. Handle; 8. Limiter; 9. Hook; 10. Sampling pipe. Detailed Implementation

[0017] like Figure 1 , Figure 2As shown, the fine coal sampling mechanism provided in this embodiment includes a feeding chute 1. A box 3 connected to the feeding chute 1 is welded to the side wall of the feeding chute 1. A horizontal and rotatable rotating shaft 5 is installed at the bottom of the side wall of the box 3 near the feeding chute 1. A flap 6 that can block the box 3 is installed on the rotating shaft 5. One end of the rotating shaft 5 passes through the box 3 and is connected to a handle 7. A limiter 8 that locks the opening angle of the flap 6 is installed on the handle 7. The limiter 8 can control the opening angle of the flap 6 from 30 to 60°, such as 30°, 35°, 40°, 45°, 60°, etc., thereby controlling the sampling amount. A sampling pipe 10 is connected to the bottom of the box 3. A receiving box is connected to the end of the sampling pipe 10. The sampling pipe 10 and the receiving box are used to ensure the flowability of the fine coal and avoid the fine coal from settling, which would affect the sampling data. An openable box cover 4 is connected to the box. The sampler can be taken out by opening the box cover 4, so that sampling can be performed without stopping the machine.

[0018] To facilitate control of the opening angle of flap 6, such as Figure 1 As shown, the limiter 8 includes multiple pull rods of different lengths. One end of the pull rod is fitted onto the handle 7, and the other end is provided with a hook 9. The side wall of the discharge chute 1 is machined with a groove 2 that cooperates with the hook 9.

[0019] The method of using this utility model is as follows:

[0020] When using, open the box cover 4, place the sampler at the inlet of the sampling pipe 10, and then close the box cover 4. Figure 4 As shown, turn the handle to open the flip cover. Figure 3 As shown, some fine coal flows into the box 3 along the flip cover and then flows to the receiving box along the sampling pipe 10. During this process, the angle of the flip cover is locked by the corresponding length limiter 8, and the sampler installed on the sampling pipe 10 completes the sampling. After the sampling time is up, the flip cover is closed, and after waiting for a period of time, the box cover 4 is opened again to remove the sampler, completing the sampling operation. Using this method for sampling eliminates the need to stop the washing and screening system for sampling, greatly improving sampling efficiency and significantly reducing safety hazards.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications and substitutions based on the technical solutions and inventive concepts provided by the present invention should be covered within the scope of protection of the present invention.

Claims

1. A fine coal sampling mechanism comprising a draw-off chute (1), characterized in that: A box (3) connected to the material chute (1) is welded to the side wall of the material chute (1). A horizontal and rotatable shaft (5) is installed at the bottom of the side wall of the box (3) near the material chute (1). A flap (6) that can block the box (3) is installed on the shaft (5). One end of the shaft (5) passes through the box (3) and is connected to a handle (7). A limiter (8) that locks the opening angle of the flap (6) is installed on the handle (7). A sampling pipe (10) is connected to the bottom of the box (3). A receiving box is connected to the end of the sampling pipe (10). An openable box cover (4) is connected to the box (3).

2. The silt sampling mechanism according to claim 1, characterized in that: The limiter (8) limits the rotation angle of the flap (6) to 30-60° via the handle (7).

3. The silt sampling mechanism according to claim 1, wherein: The limiter (8) includes multiple pull rods of different lengths. One end of the pull rod is fitted onto the handle (7), and the other end is provided with a hook (9). The side wall of the discharge chute (1) is machined with a groove (2) that cooperates with the hook (9).

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