A sampling device for use in a pipeline of ore slurry

Abstract

The utility model discloses a kind of sampling device for ore pulp pipeline belongs to slurry sampling technical field.Solve the problem that traditional sampling mode sampling accuracy is insufficient, sampling tube is easy to block, ore sample is easy to be contaminated and sampling component is easy to leak in humid environment.The utility model is by cylinder control system using compressed air to ore pulp can be timed, precision sampling.Meanwhile sampling box can distinguish ore sample from ore pulp that does not need to be sampled in sampling box, avoid ore sample to be contaminated, and ore pulp can be made to pass quickly along inertia effect by the way that sampling tube and sample inlet tube are arranged obliquely, and it is not easy to block pipeline.Overall operation process is safe and simple, and maintenance workload of staff is reduced, and safety hazard is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of slurry sampling technology, specifically relating to a sampling device for mineral slurry pipelines. Background Technology

[0002] In the mineral processing industry, slurry sampling devices are used to detect process quality parameters such as the concentration, fineness, and main metal grade of products in various operating stages, thereby effectively managing, monitoring, and guiding quality control activities during production. Existing sampling methods typically use water bucket sampling, which involves cutting the slurry fluid pipe to be sampled, forming two interconnected tanks at different heights. The slurry overflows from the higher tank to the lower tank, creating a "waterfall" drop. Water bucket sampling is then performed at this drop surface, connected to a slotted stainless steel pipe. By controlling the water flow rate of the bucket and setting the sampling time, the stainless steel pipe is swung back and forth across the slurry drop surface for sampling. This sampling method is simple to manufacture and relatively practical, but it still has certain drawbacks in actual production: The main problems are as follows: fluctuations in slurry flow and slurry stratification during the production process can lead to over- or under-sampling in the water hopper, or fluctuations in water pressure in the water hopper's inlet pipe can cause changes in the sampling time interval, resulting in insufficient representativeness and accuracy of the samples; the sampling tubes are prone to blockage during the grooving sampling process of stainless steel pipes; the open sampling method makes the mineral samples easily contaminated; and the humid environment can cause slurry leakage in the sampling box, water pipes, and other components, resulting in a large amount of maintenance work. Utility Model Content

[0003] The purpose of this invention is to provide a sampling device for slurry pipelines, which aims to solve the problems of insufficient sampling accuracy, easy clogging of sampling tubes, easy contamination of mineral samples, and easy leakage of sampling components in humid environments, resulting in a large amount of maintenance work in the traditional sampling methods mentioned above.

[0004] The technical solution of this utility model is: a sampling device for slurry pipelines, including a sampling box, an inlet pipe at the top of the sampling box, a discharge pipe at the bottom of the sampling box, a sampling container at the bottom of the sampling box, a cylinder on one side wall of the sampling box, a sampling funnel connected to the cylinder, the sampling container placed below the opening of the sampling funnel, a fixed platform connected to the cylinder, a duct connected to the fixed platform, and a cylinder control system connected to the duct.

[0005] Furthermore, the sample inlet tube is inserted at an angle into the slurry channel, and the two ends of the slurry channel are provided with channel flanges. The upper end of the slurry channel is inserted at an angle into the sampling tube, and the top of the sampling tube is provided with a first fixed flange and a second fixed flange that are aligned and connected. The top of the second fixed flange is provided with a sampling tube top ball.

[0006] Furthermore, a drain rack is provided at the bottom of the sampling box.

[0007] Furthermore, a partition is provided between the sampling box and the sampling tube.

[0008] Furthermore, the sampling box has a sampling port on the side wall where the sampling box is located.

[0009] The beneficial effects of this utility model are as follows: Firstly, the sampling box is set up separately in the sampling chamber, which can effectively ensure the representativeness of the mined sample and prevent disordered slurry from entering the sampling box and contaminating the sample. Secondly, the cylinder system has good sealing performance, a low failure rate, and fewer restrictions on the working environment. It can still maintain accurate operation in an environment with slurry splashing. The sampling funnel installed on the cylinder ensures that the funnel only contacts the slurry during intermittent sampling, reducing funnel wear. Thirdly, the cylinder control system enables the cylinder to work at timed and regular intervals, completing accurate and orderly sampling. Fourthly, the inclined sampling tube and inlet tube prevent the slurry from clogging them due to its own flow speed and inertia. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cylinder part of this utility model; Figure 3 This is a schematic diagram of the slurry flow channel structure in this utility model; Figure 4 This is a schematic diagram of the sampling tube structure in this utility model.

[0011] In the diagram, 1-slurry flow channel; 2-first fixed flange; 3-inlet pipe; 4-flow channel flange; 5-sampling tube top sphere; 6-second fixed flange; 7-sampling tube; 8-sampling box; 9-sampling cylinder; 10-sampling funnel; 11-sampling box; 12-draining rack; 13-sampling port; 14-discharge pipe; 15-fixed platform; 16-air duct; 17-cylinder control system; 18-partition plate. Detailed Implementation

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

[0013] like Figures 1 to 4 As shown, a sampling device for a slurry pipeline includes a sampling box 8, an inlet pipe 3 at the top of the sampling box 8, a discharge pipe 14 at the bottom of the sampling box 8, a sampling box 11 at the bottom inside the sampling box 8, a cylinder 9 on one side wall of the sampling box 8, a sampling funnel 10 connected to the cylinder 9, the sampling box 11 being placed below the opening of the sampling funnel 10, a fixed platform 15 connected to the cylinder 9, a duct 16 connected to the fixed platform 15, and a cylinder control system 17 connected to the duct 16.

[0014] Specifically, the sample inlet tube 3 is inserted at an angle into the slurry channel 1. The slurry channel 1 is provided with channel flanges 4 at both ends. The upper end of the slurry channel 1 is inserted at an angle into the sampling tube 7. The top of the sampling tube 7 is provided with a first fixed flange 2 and a second fixed flange 6 that are aligned and connected. The top of the second fixed flange 6 is provided with a sampling tube top ball 5.

[0015] Specifically, the bottom of the sampling box 11 is provided with a drain rack 12, a partition 18 is provided between the sampling box 11 and the discharge pipe 14, and the sampling box 8 has a sampling port 13 on the side wall where the sampling box 11 is placed.

[0016] In practical applications, the slurry channel 1 is fixed to the slurry pipeline along the slurry flow direction via flow channel flanges 4 at both ends. The inner wall of the slurry channel 1 has a wear-resistant coating, providing excellent wear and corrosion resistance. The flow channel flanges 4 at both ends are loosely connected for easy installation and disassembly. Subsequently, the slurry flows through the slurry channel 1 and is intercepted by the sampling tube 7, thus entering the inlet tube 3. The sampling tube 7 is inserted into the slurry channel 1 at a 60° angle along the slurry flow direction. The portion of the sampling tube 7 in the slurry channel 1 has a semi-circular design and is made of stainless steel with a wear-resistant coating. Its advantage is that it allows slurry at different heights in the channel to pass evenly through the arc interception and enter the inlet tube 3 for sampling. At the same time, the inclined and semi-circular design makes it less likely for the slurry to clog the sampling tube 7 and the inlet tube 3, allowing the slurry to flow smoothly into the sampling box 8.

[0017] During sampling, the cylinder control system 17 is activated, and air enters through the air duct 16 for ventilation. This air then acts on the sampling cylinder 9 connected to the fixed platform 15. The cylinder control system 17 includes a controller, pneumatic actuators, sensors, an air source processing unit, and a human-machine interface. The cylinder control system 17 can control the sampling cylinder 9 to perform timed and regular actions, completing precise and orderly sampling actions, and further driving the sampling funnel 10 to work. The slurry enters the sampling box 11 through the sampling funnel 10. The water in the slurry is discharged through the small hole at the bottom of the sampling box 11, along the bottom of the drain rack 12, and through the gap in the sampling port 13. The small hole in the sampling box 11 allows the slurry to settle naturally in real time, filtering the water in the slurry and keeping the sampling box 11 clean. At this time, clean slurry remains in the sampling box, while the unsampled slurry is directly discharged through the discharge pipe 14.

Claims

1. A sampling device for a slurry pipeline, comprising a sampling box (8), characterized in that, The sampling box (8) has an inlet tube (3) at the top and a discharge tube (14) at the bottom. A sampling box (11) is provided at the bottom of the sampling box (8). A cylinder (9) is provided on one side wall of the sampling box (8). The cylinder (9) is connected to a sampling funnel (10). The sampling box (11) is placed below the opening of the sampling funnel (10). The cylinder (9) is connected to a fixed platform (15). The fixed platform (15) is connected to an air duct (16). The air duct (16) is connected to a cylinder control system (17).

2. A sampling device for a slurry pipeline according to claim 1, characterized in that, The sample inlet tube (3) is inserted at an angle into the slurry channel (1). The slurry channel (1) is provided with channel flanges (4) at both ends. The upper end of the slurry channel (1) is inserted at an angle into the sampling tube (7). The top of the sampling tube (7) is provided with a first fixed flange (2) and a second fixed flange (6) that are aligned and connected. The top of the second fixed flange (6) is provided with a sampling tube top ball (5).

3. A sampling device for a slurry pipeline according to claim 1 or 2, characterized in that, The sampling box (11) is equipped with a drain rack (12) at the bottom.

4. A sampling device for a slurry pipeline according to claim 3, characterized in that, A partition (18) is provided between the sampling box (11) and the sampling tube (14).

5. A sampling device for a slurry pipeline according to claim 1, characterized in that, The sampling box (8) has a sampling port (13) on the side wall where the sampling box (11) is placed.

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