Novel pulverized coal sampling device

Abstract

The utility model discloses a novel pulverized coal sampling device which comprises a sampling box, a fan arranged at the top of the sampling box, a telescopic assembly arranged at the bottom of the fan and a sampling assembly arranged outside the sampling box, and the telescopic assembly comprises a hollow telescopic rod connected with the bottom of the fan, the pressing plate is arranged at the bottom of the hollow telescopic rod; the sampling assembly comprises a plurality of sample collecting boxes arranged on the outer side of the sampling box and a switch sliding plate connected with the sample collecting boxes. According to the pulverized coal sampling device, pulverized coal is driven by the rotation of the brush roller, so that the pulverized coal is conveyed into the sampling box and is uniformly distributed in the collecting box, accumulation and non-uniform distribution of the pulverized coal in the collecting box are avoided, a large amount of flying dust in the collecting process is also avoided, and the sampling accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a novel coal powder sampling device. Background Art

[0002] The development and technical background of pulverized coal sampling devices are closely related to the development of the electric power industry. In the electric power industry, pulverized coal is an important raw material for boiler combustion, and the quality of pulverized coal has a direct impact on the combustion efficiency and performance of the boiler. Therefore, accurate sampling and analysis of pulverized coal is particularly important. With the development of the electric power industry, the accuracy and representativeness of pulverized coal sampling are increasingly required. Traditional sampling methods, such as impact sampling and accumulation sampling, are not scientific enough to obtain true samples that are consistent with the actual composition of fly ash, which makes it difficult to accurately measure the carbon content of fly ash. In order to solve this problem, a new type of fly ash isokinetic sampler has been developed for isokinetic continuous sampling of fly ash from the tail flue gas of power plant boilers, so that the carbon content of fly ash can be accurately detected, providing a reliable basis for the scientific calculation of boiler thermal efficiency.

[0003] The prior art CN220339750U discloses a manual coal powder sampling device, which includes a sampling pipeline, a purge pipeline, a cyclone separator and an air discharge pipeline. The sampling port of the sampling pipeline is located in the sampled coal powder pipeline, and the sampling pipeline enters the cyclone separator after passing through the sampling manual door and the first check valve; the purge pipeline is connected to the sampling pipeline and is located between the sampling manual door and the first check valve; one end of the air discharge pipeline is connected to the exhaust port of the cyclone separator, and the other end is located in the sampled coal powder pipeline.

[0004] However, the above-mentioned manual coal powder sampling device has the following problems: a large amount of dust is raised during coal powder sampling, which reduces the sampling accuracy and the manual sampling efficiency is too low. Summary of the Invention

[0005] The utility model overcomes the deficiencies of the prior art and provides a novel coal powder sampling device.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a novel coal powder sampling device, comprising: a sampling box, a fan arranged on the top of the sampling box, a telescopic component arranged at the bottom of the fan, and a sampling component arranged outside the sampling box;

[0007] The telescopic assembly includes: a hollow telescopic rod connected to the bottom of the fan, and a compression plate arranged at the bottom of the hollow telescopic rod;

[0008] The sampling assembly includes: a plurality of sample collecting boxes arranged outside the sampling box, and a switch slide connected to the sample collecting boxes.

[0009] In a preferred embodiment of the present invention, a brush roller is installed in each of the sample collection boxes, the brush roller is connected to the opposite sides of the sample collection box, the brush roller is located at the bottom of the sample collection box, and the brush roller does not directly contact the ground.

[0010] In a preferred embodiment of the present invention, the switch slide is arranged outside the sampling box, and the sampling box and the switch slide are slidably connected via a sliding ball.

[0011] In a preferred embodiment of the present invention, a slide rail is provided at the connection between the switch slide and the sample collection box, and the switch slide and the sample collection box are connected by sliding up and down via the slide rail.

[0012] In a preferred embodiment of the present invention, the pressing plate and the fan are connected in the vertical direction via a slideway.

[0013] In a preferred embodiment of the present invention, there is a compression box directly below the compression plate, and the compression box is arranged on the bottom plate inside the sampling box.

[0014] In a preferred embodiment of the present invention, a sample feeding port is provided at the connection between the sampling box and the sample collecting box.

[0015] In a preferred embodiment of the present invention, a vent is provided at the connection between the hollow telescopic rod and the pressing plate. The vent is a regular circle and passes through the pressing plate.

[0016] In a preferred embodiment of the present invention, the sampling box is made of stainless steel.

[0017] In a preferred embodiment of the present invention, the sample feed port passes through the compression box.

[0018] The present invention solves the defects in the background technology and has the following beneficial effects:

[0019] (1) In the present invention, a brush roller is installed in each sample collection box. The brush rollers are connected to opposite sides of the sample collection box and are located at the bottom of the sample collection box, so that the coal powder entering the collection box can pass through the brush rollers and be evenly brushed down and distributed in the collection box. Since the brush rollers do not directly contact the ground, they can avoid unnecessary impurities from the external environment and also prevent damage to the brush rollers caused by ground wear. When the coal powder enters the sample collection box, the rotation of the brush rollers will help disperse the coal powder, prevent it from accumulating in one place, and avoid raising a large amount of dust, thereby making the collected sample more uniform and more accurately reflecting the overall properties of the coal powder.

[0020] (2) The utility model is provided with a hollow telescopic rod connected to the bottom of the fan, a compression plate provided at the bottom of the hollow telescopic rod, and a compression box directly below the compression plate. The fan draws air inward. The design of the fan drawing air inward can generate a strong suction force, effectively sucking the coal powder into the compression box through the hollow telescopic rod and the compression plate. The coal powder can be collected more accurately in the compression box, reducing the loss of coal powder during the sampling process.

[0021] (3) The present invention is provided with a switch slide and a slide rail. By sliding the switch slide, the operator can easily and quickly open or close the sample feed port of the sample collection box, thereby improving work efficiency. The slide rail design enables the switch slide to move in a smaller space, thereby reducing the ground or desktop area occupied by the device when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 It is a three-dimensional structural diagram of a preferred embodiment of the utility model;

[0024] Figure 2 It is a cross-sectional view of a preferred embodiment of the present utility model;

[0025] Figure 3 It is a top view of a preferred embodiment of the present utility model;

[0026] Figure 4 It is a partial diagram of a preferred embodiment of the present utility model;

[0027] Figure 5 This is a structural diagram of a sample collection box according to a preferred embodiment of the present invention;

[0028] In the figure: 1. Sampling box; 2. Fan; 3. Slide; 4. Sample collection box; 5. Switch slide; 6. Hollow telescopic rod; 7. Pressing plate; 8. Pressing box; 9. Brush roller. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention.

[0030] like Figure 1-Figure 5 As shown, a novel coal powder sampling device comprises: a sampling box 1, a fan 2 arranged on the top of the sampling box 1, a telescopic component arranged at the bottom of the fan 2, and a sampling component arranged outside the sampling box 1;

[0031] In this utility model, the telescopic assembly includes a hollow telescopic rod 6 connected to the bottom of the fan 2 and a compression plate 7 disposed at the bottom of the hollow telescopic rod 6. The hollow portion of the hollow telescopic rod 6 allows the suction force of the fan 2 to be transmitted through the rod, thereby facilitating the absorption of coal dust. The generated suction force is then transmitted to the compression plate 7 through the hollow telescopic rod 6, enabling the compression plate 7 to effectively absorb and compress the coal dust. The hollow telescopic rod 6 has sufficient strength and stability to support the weight of the compression plate 7 and the absorbed coal dust, while maintaining the stability and accuracy of the sampling process. The bottom of the compression plate 7 is coated with polyurethane, which effectively increases friction with the coal dust, improving sampling efficiency.

[0032] In this utility model, the sampling assembly includes several sample collection boxes 4 positioned outside a sampling box 1 and a switch slide 5 connected to the sample collection boxes 1. The switch slide 5 is connected to the sample collection boxes 4 and can be opened and closed by sliding the switch slide 5. When the switch slide 5 is closed, a good seal is formed to prevent leakage of the coal dust sample and intrusion of external contaminants.

[0033] In the present invention, a brush roller 9 is installed in each of the sample collection boxes 4. The brush rollers 9 are connected to opposite sides of the sample collection box 4. The brush rollers 9 are located at the bottom of the sample collection box 4 and do not directly contact the ground. When coal powder enters the sample collection box 4, the rotation of the brush rollers 9 helps collect the coal powder and ensures that it is evenly distributed in the collection box. This prevents the coal powder from piling up or being unevenly distributed in the collection box, and also prevents a large amount of dust from being generated during the collection process, thereby improving the representativeness of the sampling. The surface of the brush rollers 9 has a rubber coating that increases the friction between the brush rollers 9 and the coal powder, helping to more effectively capture the coal powder sample.

[0034] In the present invention, the switch slide 5 is arranged on the outside of the sampling box 1, and the sample sampling box 1 and the switch slide 5 are slidably connected by a sliding ball. The switch slide 5 connected by the sliding ball can be easily opened and closed, which simplifies the sampling process and improves work efficiency.

[0035] In the utility model, a slide rail is provided at the connection between the switch slide plate 5 and the sampling box 1 , and the switch slide plate 5 and the sampling box 1 are connected by sliding up and down through the slide rail.

[0036] In the present invention, the compression plate 7 and the fan 2 are connected vertically via a slide 3. This connection allows the compression plate 7 to move stably up and down along the slide 3 under the suction generated by the fan 2 to adapt to coal powder layers of varying thicknesses. The slide 3 design provides stable support and guidance, ensuring that the compression plate 7 remains stable during movement and does not deviate or shake due to suction or uneven coal powder. The height of the compression plate 7 can be adjusted as needed, allowing the device to adapt to coal powder layers of varying thicknesses, ensuring that the coal powder is effectively compressed each time a sample is taken.

[0037] In the present invention, there is a compression box 8 directly below the compression plate 7, which is arranged on the bottom plate inside the sampling box 1. This ensures that when the compression plate 7 moves downward, the coal powder can be directly and evenly pressed into the compression box 8. The compression box 8 receives and stores the coal powder sample compacted by the compression plate 7, ensuring the integrity and tightness of the sample.

[0038] In the present invention, a sample feed port is provided at the connection between the sampling box 1 and the sample collecting box 4. The sample feed port passes through the pressing box 8, ensuring that the pulverized coal sample can directly enter the sample collecting box 4 through the feed port.

[0039] In the present invention, a vent is formed at the junction of the hollow telescopic rod 6 and the compression plate 7. This vent is a regular circular shape and extends through the compression plate 7. This vent allows the suction force of the fan 2 to pass smoothly through and act on the pulverized coal beneath the compression plate 7. The regular circular shape of the vent helps maintain airflow stability. When the fan 2 is operating, the stable airflow more evenly affects the pulverized coal, avoiding problems such as inaccurate sampling and flying pulverized coal caused by turbulent airflow.

[0040] In the present invention, the sampling box 1 is made of stainless steel.

[0041] When the utility model is used, the switch is turned on, and the brush roller 9 rotates to collect coal powder. The coal powder enters the sample collection box 4 through the feed port and ensures that it is evenly distributed in the collection box. The rubber coating on the surface of the brush roller 9 increases the friction with the coal powder. The fan 2 at the top of the device is started, and the fan 2 begins to generate a strong suction force. The suction force of the fan 2 is transmitted through the hollow telescopic rod 6. The hollow part of the telescopic rod allows air to pass through. The telescopic rod will expand and contract to adapt to the different thicknesses of coal powder layers, and at the same time drive the compression plate 7 downward. Under the action of the suction force of the fan 2, the compression plate 7 adsorbs and compresses the coal powder. The bottom of the compression plate 7 has a polyurethane coating, which increases the friction with the coal powder and improves the sampling efficiency. The compressed coal powder is then stored in the compression box 8. When enough coal powder samples are collected, the sample collection box 4 is closed by sliding the switch slide 5 to form a good seal to prevent the coal powder samples from leaking or being invaded by external pollutants.

[0042] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A new type of coal powder sampling device, comprising: A sampling box (1), a fan (2) arranged on the top of the sampling box (1), a telescopic component arranged at the bottom of the fan (2), and a sampling component arranged outside the sampling box (1), characterized in that: The telescopic assembly comprises: a hollow telescopic rod (6) connected to the bottom of the fan (2), and a pressing plate (7) arranged at the bottom of the hollow telescopic rod (6); The sampling assembly comprises: a plurality of sample collecting boxes (4) arranged outside the sampling box (1), and a switch slide (5) connected to the sample sampling box (1).

2. A novel coal powder sampling device according to claim 1, characterized in that: A brush roller (9) is installed in each of the sample collection boxes (4), and the brush roller (9) is connected to the opposite sides of the sample collection box (4). The brush roller (9) is located at the bottom of the sample collection box (4), and the brush roller (9) does not directly contact the ground.

3. A novel coal powder sampling device according to claim 1, characterized in that: The switch slide (5) is arranged outside the sampling box (1), and the sampling box (1) and the switch slide (5) are slidably connected via a sliding ball.

4. A novel coal powder sampling device according to claim 1, characterized in that: A slide rail is provided at the connection between the switch slide plate (5) and the sample collection box (4), and the switch slide plate (5) and the sample collection box (4) are connected by sliding up and down via the slide rail.

5. The novel coal powder sampling device according to claim 1 is characterized in that: The pressing plate (7) and the fan (2) are connected in the vertical direction via a slideway (3).

6. The novel coal powder sampling device according to claim 1, characterized in that: There is a compression box (8) directly below the compression plate (7), and the compression box (8) is arranged on the bottom plate inside the sampling box (1).

7. The novel coal powder sampling device according to claim 1 is characterized in that: A sample feed port is provided at the connection between the sampling box (1) and the sample collecting box (4).

8. The novel coal powder sampling device according to claim 1, characterized in that: A vent is provided at the connection between the hollow telescopic rod (6) and the pressing plate (7). The vent is a regular circle and passes through the pressing plate (7).

9. The novel coal powder sampling device according to claim 1, characterized in that: The sampling box (1) is made of stainless steel.

10. The novel coal powder sampling device according to claim 6, characterized in that: The sample feed port passes through the compression box (8).

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