CN106979870B - Continuous sampling device of different position samples - Google Patents
Continuous sampling device of different position samples Download PDFInfo
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- CN106979870B CN106979870B CN201710320081.7A CN201710320081A CN106979870B CN 106979870 B CN106979870 B CN 106979870B CN 201710320081 A CN201710320081 A CN 201710320081A CN 106979870 B CN106979870 B CN 106979870B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
- G01N2001/1012—Suspensions
- G01N2001/1025—Liquid suspensions; Slurries; Mud; Sludge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
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- Hydrology & Water Resources (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a continuous sampling device for samples in different positions, which consists of a sample receiving body, a clean water valve, an upper sample sampling valve, a lower sample sampling valve and a sampling stopping valve, wherein the sample receiving body, the clean water valve, the upper sample sampling valve, the lower sample sampling valve and the sampling stopping valve are connected with one another through a connecting pipe sixthly. The invention can provide samples for measuring the process parameters of the liquid or the liquid-solid mixture at different positions in the equipment with the open container, and improves the automation level and the reliability of the measurement. The invention has simple working principle, stable and reliable structure, is beneficial to obtaining process indexes, reduces power consumption and improves production indexes and recovery rate.
Description
Technical Field
The invention relates to a continuous sampling device for samples at different positions in an open container, which can be widely applied to various industrial processes, in particular to an automatic sampling device for continuously and uninterruptedly measuring parameters such as underflow concentration, overflow concentration and the like of equipment such as thickening equipment, grading equipment and the like in a mineral processing process.
Background
In various industrial processes, it is often necessary to sample and measure process parameters of materials in some equipment having open vessels. For example, in mineral processing, it is often necessary to perform separate, continuous, and uninterrupted automatic sampling and measurement of the underflow and overflow concentrations of a concentration classification device. Because the sampling device is comparatively complicated at present, the implementation of automatic detection has been restricted.
Disclosure of Invention
The invention provides a continuous sampling device for samples at different positions, which aims to solve the problems that the existing sampling device is complex and limits the implementation of automatic detection.
The technical scheme adopted by the invention for solving the technical problems is as follows: the connecting pipe fourth is used for connecting the clean water valve, the upper sample sampling valve, the lower sample sampling valve, the sampling valve stopping fifth and the sample receiving body, the intelligent sample parameter measuring and sampling device is formed, the siphon principle of clear water drainage is utilized, the pre-designed valve work time sequence is pressed under the management of the LOGO controller, the clean water valve is opened/closed, the upper sample sampling valve, the lower sample sampling valve fourth is opened, the sampling valve stopping fifth is adopted, and the liquid and solid samples in different positions are respectively sampled.
The fresh water valve and the sampling valve are stopped from being connected to the upper portion of the sample receiving body by the connecting pipe; the upper sample sampling valve is connected to the lower part of the sample receiver by a connecting pipe, so that the upper sample is sampled; the lower sample sampling valve is connected to the lower portion of the sample receiver through a connecting pipe, and sampling of the lower sample is achieved.
1. And (5) sampling an upper ore pulp sample. Figure 2 depicts the sampling process of an upper pulp sample.
The method comprises the following steps: closing the lower sample sampling valve and stopping the sampling valve, and simultaneously opening the clear water valve, the upper sample sampling valve and the lower sample sampling valve.
Step two: after 5 seconds, the stop sampling valve is opened.
Step three: after 5 seconds, close the clear water valve the second, utilize the siphon principle of clear water drainage to accomplish the sample of the ore pulp sample of superposition, the ore pulp sample is flowed through from the sample receiver in succession.
After the sampling is finished, the sampling stopping valve is closed, and the sampling is stopped.
2. Sampling a lower pulp sample. Figure 3 depicts the sampling process of the lower slurry sample.
The method comprises the following steps: closing the upper sample sampling valve and the sampling stopping valve; open clear water valve simultaneously two minutes and next sample sampling valve.
Step two: after 5 seconds, the stop sampling valve is opened.
Step three: after 5 seconds, close the clear water valve the second, utilize the siphon principle of clear water drainage to accomplish the sample of next ore pulp sample, the ore pulp sample is in succession followed the sample receiver and flows through.
After the sampling is finished, the sampling stopping valve is closed, and the sampling is stopped.
The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention.
The invention has the beneficial effects that: the sample can be provided for measuring the process parameters of the liquid or the liquid-solid mixture at different positions in the equipment with the open container, and the automation level and the reliability of the measurement are improved. The invention has simple working principle, stable and reliable structure, is beneficial to obtaining process indexes, reduces power consumption and improves production indexes and recovery rate.
The invention is suitable for continuously sampling samples at different positions in an open container in various industrial processes, in particular to the automatic sampling for respectively and continuously measuring the underflow concentration and the overflow concentration of a concentration grading device in the mineral processing process.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Figure 2 is a schematic diagram of the upper pulp sample sampling step according to the embodiment of the present invention.
Figure 3 is a schematic diagram of the sampling step of the lower slurry sample according to the embodiment of the present invention.
In the figure: the continuous sampling device for samples in different positions comprises a sample receiving body, a clean water valve, an upper sample sampling valve, a lower sample sampling valve, a fifth sampling valve, a sixth stopping sampling valve and a sixth connecting pipe.
Detailed Description
The invention discloses a continuous sampling device for samples at different positions, which is used for sampling overflow and underflow concentrated pulp samples of thickening equipment in a mineral processing process. For the sampling device, the sample receiver, the clean water valve, the upper sample sampling valve, the lower sample sampling valve, the fourth sampling valve and the stop sampling valve are connected with one another through the connecting pipe.
The main body of the thickening apparatus is an open vessel. The clean water valve is connected to the upper portion of the sample receiving body for the first year, and the sampling valve is stopped from being connected to the upper portion of the sample receiving body for the first year. One end of the upper sample sampling valve is connected to the lower portion of the sample receiver by a connecting pipe, and the other end of the upper sample sampling valve is inserted into the ore pulp of the overflow groove of the thickening equipment by a connecting pipe, so that the overflow concentration of the thickening equipment is sampled. One end of the lower sample sampling valve is connected to the lower portion of the sample receiver through a connecting pipe sixthly, and the other end of the lower sample sampling valve is inserted into the ore pulp near the underflow opening of the thickening device through the connecting pipe sixthly, so that the underflow concentration of the thickening device is sampled. Under the control of a LOGO controller, according to a working time sequence and by utilizing a siphon principle, the sampling of overflow and underflow ore pulp samples of thickening equipment is realized through the following steps:
1. sampling of an overflow ore pulp sample:
the method comprises the following steps: closing the lower sample sampling valve and stopping the sampling valve, and simultaneously opening the clear water valve, the upper sample sampling valve and the lower sample sampling valve.
Step two: after 5 seconds, the stop sampling valve is opened.
Step three: after 5 seconds, close the clear water valve the second, utilize the siphon principle of clear water drainage to accomplish the sample of overflow ore pulp sample, overflow ore pulp sample is in succession followed the sample receiver and flows through.
After the sampling is finished, the sampling stopping valve is closed, and the sampling is stopped.
2. Sampling of underflow pulp samples:
the method comprises the following steps: close upper sample valve, stop sample valve the fifthly, open the clear water valve simultaneously and two second and next sample valve.
Step two: after 5 seconds, the stop sampling valve is opened.
Step three: after 5 seconds, the clean water valve is closed, the sampling of the underflow ore pulp sample is completed by utilizing the siphon principle of clean water drainage, and the underflow ore pulp sample continuously flows through the sample receiving body.
After the sampling is finished, the sampling stopping valve is closed, and the sampling is stopped.
Claims (9)
1. A continuous sampling device for samples at different positions, comprising: the method comprises the following steps: the sample receiving device comprises a sample receiving body, a fresh water valve for obtaining samples at different parts, an upper sample sampling valve for obtaining an upper sample, a lower sample sampling valve for obtaining a lower sample, and a sampling stopping valve for replacing a sample at another position or stopping sampling;
one end of the upper sample sampling valve third is connected with the upper sample inlet through a connecting pipe sixth, one end of the lower sample sampling valve fourth is connected with the lower sample inlet through a connecting pipe sixth, one end of the sampling valve stopping the first sampling valve fifth is connected with the sample outlet through a connecting pipe sixth, and one end of the clean water valve second is connected with sample inlets in different parts through a connecting pipe sixth;
the upper sample inlet is positioned above the lower sample inlet, and the sample outlet is positioned below the upper sample inlet and the lower sample inlet and has a height difference, so that a liquid level height difference is formed to convey the sample at the upper sample inlet and the sample at the lower sample inlet to the sample outlet through a siphon principle;
the sample inlets at different positions are located above the sample receiving body and have height differences, so that the samples at the sample inlets at different positions flow into the sample receiving body under the action of self gravity and are used for draining the upper samples and the lower samples;
the sample receiving body is located above the upper sample sampling valve and the lower sample sampling valve, a first bottom end of the sample receiving body is connected with the other end of the upper sample sampling valve through a connecting pipe sixth, a second bottom end of the sample receiving body is connected with the other end of the lower sample sampling valve sixth through a connecting pipe sixth, a third top end of the sample receiving body is connected with the other end of the clear water valve sixth through a connecting pipe sixth, and a fourth top end of the sample receiving body is connected with the other end of the sampling valve sixth through a connecting pipe sixth;
the connecting pipe between the sample receiving body and the sampling stopping valve sixteenth is a reversed U-shaped pipe and is used as a siphon pipe utilizing the siphon principle to convey the sample at the upper sample inlet and the sample at the lower sample inlet to the sample outlet;
the top end of the inverted U-shaped pipe is not higher than the positions of the sample inlets at different parts;
a sample parameter measuring instrument is installed at the position of the sample receiving body.
2. The continuous sampling device for samples at different positions according to claim 1, wherein the upper sample sampling valve is mounted after the sample receiving body is used for obtaining the upper samples.
3. The continuous sampling device for samples at different positions according to claim 1, wherein the lower sample sampling valve is mounted after the sample receiving body is mounted for obtaining the lower sample.
4. The continuous sampling device for samples in different positions, according to claim 1, the fresh water valve is mounted in front of the sample receiving body and used for obtaining samples in different positions.
5. The continuous sampling device for samples at different positions according to claim 1, wherein the sampling stop valve is arranged before the sample receiving body is arranged for replacing the samples at another position or stopping sampling.
6. The continuous sampling device for different position samples of claim 1, wherein the upper sample inlet and the lower sample inlet are determined by the required sampling position; the sample exit point is 600 mm or more below the lower sample entry point.
7. The continuous sampling device for samples in different positions of claim 1, wherein a sealing connection is guaranteed between the sample receiving body, the clean water valve, the upper sample sampling valve, the lower sample sampling valve, the sampling stopping valve and the connecting pipe sixthly, and no gas leakage phenomenon exists.
8. The continuous sampling device for samples at different positions as claimed in claim 1, wherein the connecting tube is made of steel, plastic, ceramic, nonferrous metal or stone.
9. A device for continuous sampling of samples from different locations as claimed in claim 1 wherein a LOGO controller is provided to allow for automatic control of the sampling.
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| CN109374351B (en) * | 2018-11-30 | 2020-05-08 | 中南大学 | Pressure-controlled ore pulp multi-point synchronous sampling device and method |
| CN114838975B (en) * | 2022-03-10 | 2023-03-21 | 浙江大学 | Deep sea fluid nozzle particle sampling device and sampling method thereof |
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