Pipeline ash conveying sampling device

Abstract

The utility model provides a pipeline ash conveying and sampling device, which is characterized in that a sampling pipeline extends from a branch of an ash conveying main pipeline, a pneumatic valve is arranged on the sampling pipeline, a sampling port is arranged at the tail end of the sampling pipeline, and a sample collecting box for containing ash is arranged below the sampling port. A plurality of air holes are formed in one side of a section of pipeline close to the tail end of the sampling pipeline, a filter screen is arranged on each air hole, the filter screens can block ash but can permeate air, a first buffer chamber is arranged on one side of the sampling pipeline, which is provided with the plurality of air holes, and the first buffer chamber is provided with an air vent communicated with the outside. And a filter screen capable of blocking ash and allowing gas to penetrate through is also arranged on the air vent. Furthermore, an elastic plate is arranged on the sampling pipeline at the upstream position of the first buffer chamber, and one side of the elastic plate is hinged to the inner wall of the sampling pipeline. According to the pipeline ash conveying and sampling device, automatic sampling is smoothly achieved through the pneumatic valve, sampling automation is achieved, sampling is timely, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical production technology, and in particular to a pipeline ash conveying and sampling device. Background Technology

[0002] Currently, the materials transported via pipelines in the sintering area of ​​the ironmaking plant include quicklime and dust collector ash. Later, pulverized coal and other materials will also be transported via pipelines. The current batching system uses both purchased and self-produced quicklime, requiring daily sampling and inspection, which is frequent. For example, when a truck carrying purchased quicklime arrives, three samples are taken: at the start, middle, and end of the quicklime transport process. After analysis, the data is extracted to determine changes in the quicklime composition, preventing issues with material composition from affecting the quality of the finished product. Currently, workers manually sample the quicklime from the trucks. A sampling pipe is welded to the quicklime inlet, and a manual valve is installed. The valve is operated while the truck is transporting quicklime through the pipeline to take samples. This method involves numerous quicklime inlets, resulting in high labor intensity, a dusty and unpleasant working environment, and is time-consuming and labor-intensive, leading to instances of untimely sampling.

[0003] This utility model attempts to provide a pipeline ash conveying sampling device, hoping to successfully achieve automated sampling, timely sampling, and convenient operation. Utility Model Content

[0004] This utility model attempts to provide a pipeline ash conveying sampling device, hoping to successfully achieve automated sampling, timely sampling, and convenient operation.

[0005] This utility model provides a pipeline ash conveying sampling device. A sampling pipe extends from the main ash conveying pipeline. A pneumatic valve is installed on the sampling pipe. A sampling port is provided at the end of the sampling pipe. A sample collection box for holding ash is placed below the sampling port. Multiple air holes are provided on one side of a section of the sampling pipe near the end. Each air hole is equipped with a filter screen that can block ash but allows gas to pass through. A first buffer chamber is provided on the side of the sampling pipe with multiple air holes. The first buffer chamber is equipped with a vent that communicates with the outside. The vent is also equipped with a filter screen that can block ash but allows gas to pass through.

[0006] Furthermore, an elastic plate is provided upstream of the first buffer chamber of the sampling pipeline.

[0007] Furthermore, multiple air holes are provided on one side of the sampling pipe where the elastic plate is located. Each air hole is equipped with a filter screen that can block ash but allows gas to pass through. A second buffer chamber is provided on one side of the sampling pipe where the multiple air holes are located. The second buffer chamber is equipped with an air vent that communicates with the outside. The air vent is also equipped with a filter screen that can block ash but allows gas to pass through.

[0008] Furthermore, the elastic plate is a flexible material plate, and one side of the flexible material plate is fixed to the inner wall of the sampling pipe.

[0009] Furthermore, the elastic plate is a rigid material plate, one side of which is hinged to the inner wall of the sampling pipe. A spring is provided at the hinge of the elastic plate to realize the elastic recovery of the elastic plate.

[0010] The pipeline ash sampling device provided by this utility model achieves automatic sampling through pneumatic valves, smoothly realizing automated sampling, timely sampling, and convenient operation. Attached Figure Description

[0011] Figure 1 The diagram shown is a structural schematic of the pipeline ash conveying and sampling device according to an embodiment of this utility model.

[0012] Figure 2 The diagram shows the structure of the first and second buffer chambers.

[0013] Figure 3 The diagram shows the function of the elastic plate.

[0014] Figure 3 (a) shows the situation when there is not enough dust accumulated on the elastic plate.

[0015] Figure 3 (b) shows the situation where the elastic plate is pressed down by the accumulated dust, causing the dust to fall further.

[0016] Figure label:

[0017] 100: Pipeline ash conveying sampling device;

[0018] 1: Main ash conveying pipeline; 2: Sampling pipeline; 3: Pneumatic valve; 4: Sampling port; 5: Elastic plate; 61: First buffer chamber; 611: Air hole; 612: Vent; 62: Second buffer chamber; 621: Air hole; 622: Vent; 7: Ash; 8: Sample collection box. Detailed Implementation

[0019] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0020] Figure 1 The diagram shown is a structural schematic of the pipeline ash conveying and sampling device according to an embodiment of this utility model. Figure 2 The diagram shows the structure of the first and second buffer chambers.

[0021] like Figure 1 and Figure 2As shown, this embodiment of the utility model provides a pipeline ash conveying sampling device 100. A sampling pipe 2 branches off from the main ash conveying pipe 1. A pneumatic valve 3 is installed on the sampling pipe 2. A sampling port 4 is installed at the end of the sampling pipe 2. A collection box 8 for holding ash is placed below the sampling port 4. Multiple air holes 611 are provided on one side of a section of the sampling pipe 2 near the end. Each air hole 611 is equipped with a filter screen. The filter screen can block ash but allows gas to pass through. A first buffer chamber 61 is provided on one side of the sampling pipe 2 with multiple air holes 611. The first buffer chamber 61 is equipped with a vent 612 that communicates with the outside. The vent 612 is also equipped with a filter screen that can block ash but allows gas to pass through.

[0022] The main ash conveying pipeline 1 connects to the cargo hold of a truck carrying ash. During unloading and ash conveying, an air pump on one side of the truck is used for pneumatic conveying. In the existing technology, a manual valve is installed on the sampling pipeline 2. Sampling requires manual opening of the manual valve, and the ash reaches the sampling box at the sampling port 4 under the action of pneumatic conveying, completing the sampling. Firstly, manual operation of the valve cannot provide timely response, and the ash in the pneumatic conveying state actually flows out mixed with airflow, resulting in significant dust dispersion, which poses a considerable threat to the health and safety of on-site operators.

[0023] In this embodiment of the invention, a pneumatic valve 3 is installed on the sampling pipe 2, which can be remotely controlled by the operator. The pneumatic valve 3 can be opened and closed instantly, thereby enabling timely sampling. Multiple air holes 611 are provided near the end, which are connected to the first buffer chamber 61, allowing gas in the ash under pneumatic conveying conditions to be released into the first buffer chamber 61. The first buffer chamber 61 is connected to the outside through a vent 612. Filters are installed on both the air holes 611 and the vent 612 to prevent dust from entering the outside. A sample collection box 8 for holding ash is placed below the sampling port 4. The shape of the opening of the sample collection box 8 is similar to that of the sampling port 4, ensuring that the opening of the sample collection box 8 fits as closely as possible to the sampling port 4 to reduce fly ash. The ash after gas release mainly enters the sample collection box 8 by gravity.

[0024] Furthermore, such as Figure 1 and Figure 2As shown, an elastic plate 5 is installed upstream of the first buffer chamber 61 in the sampling pipe 2. In the absence of external force, the elastic plate 5 is tilted downwards to facilitate the downward sliding of ash falling onto it. The side of the elastic plate 5 not connected to the inner wall of the sampling pipe 2 is separated from it by a small gap. The elastic plate 5 can be a flexible material plate, with one side fixed to the inner wall of the sampling pipe 2. The flexible material gives the elastic plate 5 an elastic restoring force. Alternatively, the elastic plate 5 can be a rigid material plate, with one side hinged to the inner wall of the sampling pipe 2. A spring is installed at the hinge point of the elastic plate 5 to achieve elastic recovery, also providing an elastic restoring force. Figure 2 As shown, multiple air holes 621 are provided on one side of the sampling pipe 2 where the elastic plate 5 is located. Each air hole 621 is equipped with a filter screen. The filter screen can block ash but allows gas to pass through. A second buffer chamber 62 is provided on one side of the sampling pipe 2 where multiple air holes 621 are located. The second buffer chamber 62 is equipped with an air vent 622 that communicates with the outside. The air vent is also equipped with a filter screen that can block ash but allows gas to pass through.

[0025] Reference Figure 3 When the pneumatic valve 3 is opened, ash from the main ash conveying pipe 1 enters the sampling pipe 2 via pneumatic conveying and impacts the elastic plate 5 under inertia and pressure, causing the ash to deposit on the elastic plate 5. Simultaneously, gas is expelled during deposition and enters the second buffer chamber 62, exiting to the outside through the vent 622. Due to the presence of filters on the vents 621 and 622, ash does not enter the outside. When the pressure exerted by the ash on the elastic plate 5 exceeds the elastic force of the plate itself, the gap between the elastic plate 5 and the inner wall is further opened, allowing the ash on the plate 5 to fall into the pipe below. The elastic plate 5 then returns to its original shape under elastic restoring force. Since there is already a small gap between the elastic plate 5 and the inner wall, even if the plate 5 does not deform, some ash will still enter the pipe below through this small gap. The elastic plate 5 is mainly designed to provide an opportunity for ash to impact and deposit, thus expelling the gas during gas conveying through the vent 621. When the pressure exerted by the ash on the elastic plate 5 is greater than the elastic force of the elastic plate 5 itself, the gap between the elastic plate 5 and the inner wall is further opened, allowing more ash to fall.

[0026] The lower pipe connects to the outside through the first buffer chamber 61, so the falling ash reaches the sampling port 4 primarily under gravity. Since the gas used for pneumatic conveying has already been squeezed out at the elastic plate 5, the ash at the sampling port is not affected by pneumatic conveying, greatly alleviating the problem of ash floating. For ease of maintenance, this section of pipe from the elastic plate 5 to the sampling port 4 can be made detachable, for example, by connecting it to the sampling pipe 2 via a flange.

[0027] The pipeline ash sampling device provided by this utility model achieves automatic sampling through pneumatic valves, ensuring timely sampling, convenient operation, and remote operation without affecting the health and safety of operators.

[0028] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" and their orientation or positional relationships are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A pipeline ash sampling device, characterized by, A sampling pipe branches off from the main ash conveying pipeline. A pneumatic valve is installed on the sampling pipe, and a sampling port is located at the end of the sampling pipe. A sample collection box for holding ash is placed below the sampling port. Multiple air holes are provided on one side of a section of the sampling pipe near the end. Each air hole is equipped with a filter screen that can block ash but allows gas to pass through. A first buffer chamber is provided on the side of the sampling pipe with multiple air holes. The first buffer chamber is equipped with a vent that communicates with the outside. The vent is also equipped with a filter screen that can block ash but allows gas to pass through.

2. A ducted ash sampling device according to claim 1, characterised in that, An elastic plate is installed upstream of the first buffer chamber in the sampling pipeline.

3. A ducted ash sampling device according to claim 2, wherein, Multiple air holes are provided on one side of the sampling pipe where the elastic plate is located. Each air hole is equipped with a filter screen that can block ash but allows gas to pass through. A second buffer chamber is provided on one side of the sampling pipe where the multiple air holes are located. The second buffer chamber is equipped with an air vent that communicates with the outside. The air vent is also equipped with a filter screen that can block ash but allows gas to pass through.

4. The ducted ash sampling device of claim 2, wherein, The elastic plate is a flexible material plate, and one side of the flexible material plate is fixed to the inner wall of the sampling pipe.

5. The ducted ash sampling device of claim 2, wherein, The elastic plate is a rigid material plate, with one side of the rigid material plate hinged to the inner wall of the sampling pipe. A spring is provided at the hinge of the elastic plate to realize the elastic recovery of the elastic plate.

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