Incoming fire coal sampling device for thermal power plant

Abstract

The utility model discloses a thermal power plant in-plant fire coal sampling device, relates to thermal power related technical field, including sampling pipe fitting, grinding box and motor, one side of sampling pipe fitting passes through and is connected with discharge pipe, the grinding box is arranged right above sampling pipe fitting, the outside of sampling pipe fitting is provided with support mechanism, the motor is connected with the support mechanism. The supporting mechanism supports the outer side of the sampling pipe fitting to facilitate the stability of the sampling pipe fitting and the placement of the motor, the sampling mechanism is arranged in the sampling pipe fitting, and the sampling mechanism vertically conveys the placed coal, facilitates the sampling of a plurality of groups of coal piles and crushes large coal briquettes. In the using process, the outer sleeve is pulled, so that the outer sleeve moves on the outer side of the sampling pipe fitting, the height of the outer sleeve and the height of the supporting legs arranged on the outer side are adjusted, then the insertion depth of a coal mine is controlled, and the phenomenon that a coal sample is broken or damaged in the sampling process is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal power, specifically to a coal sampling device for coal entering a thermal power plant. Background Technology

[0002] Thermal power generation is the main power generation method in my country. As one of the three main equipment of thermal power plants, the power plant boiler has developed along with the development of my country's thermal power industry. Coal sampling refers to the collection of coal samples from raw coal or from stockpiles, trains, coal ships and other places during the transportation, storage, processing and use of coal.

[0003] Coal delivered to the power plant refers to the raw coal transported to the power plant, also known as lump coal before the station. In order to ensure the fuel quality of the power plant and avoid adverse effects caused by low calorific value or high moisture content, it is generally necessary to conduct quality testing on the coal delivered to the power plant. The sampling device is generally a columnar structure and needs to be manually lifted. The lack of a support structure will affect the safety of the motor at the top of the device during daily placement. Summary of the Invention

[0004] The purpose of this invention is to provide a coal sampling device for power plants to address the aforementioned deficiencies in the prior art.

[0005] A coal sampling device for power plants includes a sampling tube, a grinding chamber, and a motor. A discharge pipe is connected through one side of the sampling tube. The grinding chamber is positioned directly above the sampling tube. A support mechanism is located on the outside of the sampling tube to support its stability and facilitate the placement of the sampling tube and motor. A sampling mechanism is located inside the sampling tube to vertically transport the placed coal, facilitating sampling from multiple coal piles and crushing large coal pieces.

[0006] Preferably, the support mechanism includes an outer tube, a rubber pad, a support foot, a threaded rod, a guide rod, and a nut. The outer tube is installed on the outside of the sampling tube. The support foot is arranged in a ring around the outside of the outer tube. The guide rod is symmetrically connected through the outside of the outer tube. The threaded rod is connected through the outside of the outer tube. The top end of the threaded rod is connected to the bottom end of the grinding box. The nut is connected to the outside of the threaded rod. The bottom end of the support foot is fitted with a rubber pad.

[0007] Preferably, the outer sleeve is connected to the bottom end of the grinding chamber via a through-connected guide rod.

[0008] Preferably, the threaded rod is connected to the outer side of the outer sleeve via a nut connected to the outer side.

[0009] Preferably, the sampling mechanism includes a grinding box, a feeding port, a motor, a handle, an auger conveyor rod, and a grinding disc. The top of the grinding box has a feeding port, and the top of the grinding box is connected to a motor. The output end of the motor is connected to the grinding disc, the grinding disc is disposed inside the grinding box, the auger conveyor rod is disposed inside the sampling tube, and a handle is arranged in a ring on the outer side of the grinding box.

[0010] Preferably, the motor is connected to the grinding disc and the top of the auger conveyor rod via an output shaft.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. During use, by pulling the outer sleeve, the outer sleeve is displaced outside the sampling tube, and the height of the outer sleeve and the support feet set on the outside are adjusted, thereby controlling the depth of coal insertion. The sampling tube is then used to directly sample and process coal blocks. At the same time, the outer sleeve slides outside the sampling tube, and the outer sleeve and the outer side of the threaded rod are locked by the threaded rod. The support feet support the outer side of the sampling tube, which facilitates vertical support for the sampling tube and the motor.

[0013] 2. After sampling is completed, the extracted coal is simultaneously put into the grinding chamber. While the motor drives the auger conveyor to rotate for sampling, the motor also drives the grinding disc to rotate. The grinding disc grinds the coal blocks. 3-5 kg ​​of crushed sample is collected and sent to the laboratory for analysis. The sample is ensured to be representative enough to reflect the overall coal quality of the coal pile. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the overall side view structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the overall orthographic structure of this utility model.

[0017] Figure 4 This is a top-section structural diagram of the grinding box in this utility model.

[0018] in:

[0019] 1. Sampling tube; 2. Discharge tube; 3. Outer tube; 4. Rubber pad; 5. Support foot; 6. Threaded rod; 7. Guide rod; 8. Support mechanism; 9. Sampling mechanism; 10. Grinding box; 11. Feed port; 12. Motor; 13. Handle; 14. Nut; 15. Screw conveyor rod; 16. Grinding disc. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 4 As shown, a coal sampling device for a thermal power plant includes a sampling tube 1, a grinding chamber 10, and a motor 12. A discharge pipe 2 is connected through one side of the sampling tube 1. The grinding chamber 10 is located directly above the sampling tube 1. A support mechanism 8 is provided on the outside of the sampling tube 1 to support the outside of the sampling tube 1, facilitating the stability of the sampling tube 1 and the motor 12. A sampling mechanism 9 is provided inside the sampling tube 1 to vertically transport the placed coal, facilitating sampling of multiple coal piles and crushing large coal pieces.

[0022] In this embodiment, the support mechanism 8 includes an outer tube 3, a rubber pad 4, a support foot 5, a threaded rod 6, a guide rod 7, and a nut 14. The outer tube 3 is installed on the outside of the sampling tube 1. The support foot 5 is arranged in a ring around the outside of the outer tube 3. The guide rod 7 is symmetrically connected through the outside of the outer tube 3. The threaded rod 6 is connected through the outside of the outer tube 3. The top end of the threaded rod 6 is connected to the bottom end of the grinding box 10. The nut 14 is connected to the outside of the threaded rod 6. The rubber pad 4 is attached to the bottom end of the support foot 5.

[0023] In this embodiment, the outer sleeve 3 is connected to the bottom end of the grinding box 10 through a through-connected guide rod 7, and the displacement direction of the outer sleeve 3 is guided by the guide rod 7 provided on the outside of the outer sleeve 3.

[0024] In this embodiment, the threaded rod 6 is connected to the outer side of the outer sleeve 3 via the nut 14 connected to the outer side, and the outer side of the outer sleeve 3 is positioned by the nut 14 and the threaded rod 6.

[0025] In this embodiment, the sampling mechanism 9 includes a grinding box 10, a feeding port 11, a motor 12, a handle 13, an auger conveyor rod 15, and a grinding disc 16. The top of the grinding box 10 has a feeding port 11, and the top of the grinding box 10 is connected to the motor 12. The output end of the motor 12 is connected to the grinding disc 16, and the grinding disc 16 is disposed inside the grinding box 10. The auger conveyor rod 15 is disposed inside the sampling tube 1, and the outer side of the grinding box 10 is provided with a handle 13, which is used to hold and move the grinding box 10.

[0026] In this embodiment, the motor 12 is connected to the top of the grinding disc 16 and the auger conveyor rod 15 via the output shaft, and the sampled coal blocks are ground by the grinding disc 16.

[0027] In practical applications, this coal sampling device used in thermal power plants includes the following tasks:

[0028] Step 1: The operator first moves the outer sleeve 3 upward by pulling it up. Using the guide rod 7 that runs through the outer side of the outer sleeve 3, the height of the outer sleeve 3 and the support foot 5 is adjusted. After adjusting the height of the outer sleeve 3 and the support foot 5, the nut 14 that runs through the outer side of the threaded rod 6 is rotated to support and lift the bottom end of the outer sleeve 3, thereby controlling the insertion depth of the sampling tube 1.

[0029] Step 2: After the coal sampling is completed, the operator pulls the outer sleeve 3 downwards, and the support foot 5 contacts the ground. By installing another set of nuts 14, the upper and lower sides of the outer sleeve 3 are positioned by the two sets of nuts 14, so that the support foot 5 set on the outside of the outer sleeve 3 supports the outside of the sampling tube 1. At the same time, the rubber pad 4 set at the bottom of the support foot 5 contacts the ground to increase the friction of the support foot 5.

[0030] Step 3: The operator holds the handle 13 to insert the sampling tube 1 into the coal mine. By turning on the motor 12, the motor 12 drives the auger conveyor 15 inside the sampling tube 1 to rotate. As the blades of the auger conveyor 15 rotate, the material is continuously squeezed and pushed, moving forward along the sampling tube 1. When the material reaches its destination, it can be discharged through the discharge pipe 2 set on one side of the sampling tube 1.

[0031] Step 4: The operator collects the coal blocks discharged from the discharge pipe 2 through the collection tray, and then puts a portion of the coal blocks into the feeding port 11 at the top of the grinding box 10. The grinding disc 16 is rotated by the motor 12 to crush the coal blocks. The crushed coal blocks are then collected through the discharge port at the bottom of the grinding box 10 for coal powder analysis.

[0032] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A coal sampling device for power plant inlets, characterized in that: Including sampling pipe (1), grinding box (10) and motor (12), one side of the sampling pipe (1) is connected with the discharge pipe (2), the sampling pipe (1) is provided with the grinding box (10) on the top, the outer side of the sampling pipe (1) is provided with the supporting mechanism (8), the supporting mechanism (8) supports the outer side of the sampling pipe (1), which is convenient for the stability of the sampling pipe (1) and the motor (12), the inside of the sampling pipe (1) is provided with the sampling mechanism (9), the sampling mechanism (9) vertically transports the coal placed, which is convenient for sampling the coal pile and crushing the large coal.

2. The coal sampling device according to claim 1, wherein: The supporting mechanism (8) comprises an outer sleeve (3), a rubber pad (4), a supporting leg (5), a threaded rod (6), a guide rod (7) and a nut (14), the outer sleeve (3) is installed on the outer side of the sampling pipe (1), the outer side of the outer sleeve (3) is annularly provided with the supporting leg (5), the outer side of the outer sleeve (3) is symmetrically connected with the guide rod (7), the outer side of the outer sleeve (3) is connected with the threaded rod (6), the top end of the threaded rod (6) is connected with the bottom end of the grinding box (10), the outer side of the threaded rod (6) is connected with the nut (14), and the bottom end of the supporting leg (5) is connected with the rubber pad (4).

3. The coal sampling device according to claim 2, characterized in that: The outer sleeve (3) is connected with the bottom end of the grinding box (10) through the guide rod (7) connected therethrough.

4. The coal sampling device according to claim 2, characterized in that: The threaded rod (6) is connected with the outer side of the outer sleeve (3) through the nut (14) connected on the outer side.

5. The coal sampling device according to claim 1, wherein: The sampling mechanism (9) comprises a grinding box (10), a feeding port (11), a motor (12), a handle (13), an auger conveying rod (15) and a grinding disc (16), the top end of the grinding box (10) is provided with the feeding port (11), the top end of the grinding box (10) is connected with the motor (12), the output end of the motor (12) is connected with the grinding disc (16), the grinding disc (16) is arranged in the grinding box (10), the auger conveying rod (15) is arranged in the sampling pipe (1), and the outer side of the grinding box (10) is annularly provided with the handle (13).

6. The coal sampling device according to claim 5, wherein: The motor (12) is connected with the grinding disc (16) through the output end shaft and the top end of the auger conveying rod (15).

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