A pulp sampling and steady flow device for an on-line grade analyzer

Abstract

The utility model discloses a kind of ore pulp sampling steady flow devices for online grade analyzer, containing steady flow tank (1), support (2) of supporting steady flow tank (1), feed pipe (4), steady flow tank (1) is separated into steady flow bin (6) and backflow bin (7) by intermediate partition (8), intermediate partition (8) height is lower than the height of steady flow tank (1) outer edge height;Cylinder (3) is installed in the upper portion of support (2), feed pipe (4) is fixed on cylinder (3) by pipe clamp (13);Ore sample valve (9) is provided at the bottom of steady flow bin (6), atomizing water spray head (11), flushing water spray head (12) and liquid level meter (5) are provided at the side wall of steady flow bin (6);Backflow port (10) is provided at the bottom of backflow bin (7).The utility model can effectively solve the problem that grade analyzer analysis pipeline ore pulp flow rate changes greatly, gas bubble is easily mixed in ore pulp and affects measurement accuracy, simultaneously has the function of cleaning pipeline, with strong applicability, maintenance is convenient, self-diagnosis function and other advantages.

Description

Technical Field

[0001] This utility model relates to a slurry sampling flow stabilization device, specifically a flow stabilization box in a slurry sampling system. It can be widely used in the sampling operations of online slurry detection instruments in ferrous and non-ferrous metal mines, and can also replace traditional manual sampling operations, reducing the labor intensity of workers. Background Technology

[0002] Online grade analyzers are the cornerstone of stable mineral processing in concentrators. By quickly and accurately detecting real-time grade data, operators can promptly adjust key parameters such as crushing particle size, grinding fineness, reagent dosage, flotation liquid level, and aeration rate. This is of great significance for improving process conditions and increasing the grade and recovery rate of the target mineral concentrate.

[0003] The slurry sampling and stabilization device is a key component of the online grade analysis system, and its performance directly affects the real-time performance, representativeness, and measurement accuracy of the sampling. Existing sampling devices generally suffer from the following technical problems:

[0004] (1) The existing sampling system generally adopts gravity flow, and the slurry flow lacks a flow stabilization device. The slurry flow rate is unstable, which can easily cause slurry stratification or sedimentation, and air bubbles in the pipeline can easily enter the analyzer, causing a decrease in the measurement accuracy of the analyzer.

[0005] (2) Some sampling systems are equipped with buffer tanks, which are only used to temporarily store slurry. They lack liquid level detection and flow stabilization functions, resulting in unstable slurry flow rate and affecting the measurement accuracy of the analyzer. Summary of the Invention

[0006] The purpose of this invention is to address the problems of existing slurry sampling systems lacking slurry flow stabilization devices or having inadequate designs that result in unstable slurry flow rates, slurry stratification, or sedimentation affecting measurement accuracy. This invention provides a slurry sampling flow stabilization device for online grade analyzers.

[0007] To achieve the above-mentioned objectives of the present invention, a slurry sampling and stabilization device for an online grade analyzer comprises a stabilization box, a support bracket for supporting the stabilization box, and a feed pipe. The stabilization box is characterized by: the stabilization box being divided into two chambers: a stabilization chamber and a reflux chamber, separated by a partition plate, the height of which is lower than the outer edge of the stabilization box; a cylinder is installed on the upper part of the support bracket, and the feed pipe is fixed to the cylinder by a pipe clamp; a sample valve is provided at the bottom of the stabilization chamber; an atomizing water nozzle, a flushing water nozzle, and a level gauge are provided on the side wall of the stabilization chamber; and a reflux port is provided at the bottom of the reflux chamber.

[0008] Preferably, the present invention also includes a control unit for controlling the forward and backward movement of the cylinder, and the control unit is also connected to the level gauge, the atomizing water solenoid valve of the atomizing water nozzle, and the rinsing water solenoid valve of the rinsing water nozzle.

[0009] Preferably, the feed pipe is a flexible steel wire hose.

[0010] Preferably, this utility model also includes a solenoid valve assembly, which is connected to the control unit, and then connected to the cylinder and the ore sample valve respectively.

[0011] When ore sample analysis is required, the cylinder piston is in its initial position, and the feed pipe is positioned above the stabilizing chamber. The slurry flows into the stabilizing chamber through the feed pipe. When the level gauge detects that the set level has been reached within a set time, the level gauge transmits a signal to the control unit. The control unit then controls the cylinder to move, extending the cylinder piston and causing the feed pipe to swing above the return chamber. After waiting for several seconds for air bubbles in the slurry within the stabilizing chamber to rise to the surface, the control unit controls the atomizing water nozzle to open via the atomizing water solenoid valve. The atomized water breaks up the air bubbles on the surface of the slurry in the stabilizing chamber, thus eliminating the air bubbles. At this point, the slurry from the feed pipe returns to the process flow through the return port.

[0012] If the liquid level in the stabilizing tank fails to reach the set level within the set time, the feeding time will exceed the limit. The control unit will then determine that the feeding pipeline is blocked and issue an alarm to prompt maintenance personnel to investigate and repair the issue.

[0013] When the liquid level control fails, the slurry in the stabilizing tank overflows through the middle partition to the return tank, and then returns to the process flow through the return port, preventing the slurry from overflowing outside the stabilizing tank.

[0014] After the air bubbles are eliminated, the sample valve below opens, and the slurry flows through the valve and pipeline to the online grade analyzer for testing and analysis.

[0015] After the online grade analyzer finishes its analysis and the stabilizing tank is emptied, the control unit controls the flushing water nozzles to open via the flushing water solenoid valve, flushing the stabilizing tank and the pipeline leading to the online grade analyzer to remove any residual slurry.

[0016] After rinsing is complete, the sample valve is closed, ready for the next round of testing.

[0017] Compared with the prior art, the slurry sampling and stabilization device for online grade analyzers of this utility model, after adopting the above technical solution, has the following beneficial effects:

[0018] (1) By using the stabilizing tank and level gauge, the slurry can be output to the grade analyzer for analysis and measurement after reaching the set level. The slurry flow is more stable and can effectively eliminate the fluctuation of the feed flow rate.

[0019] (2) After the stabilizing chamber reaches the set liquid level, the feed pipe is cut off to the return chamber, allowing the slurry in the stabilizing chamber to settle, and the air bubbles in the slurry float to the surface. By starting the atomizing water nozzle, the air bubbles on the surface of the slurry are broken up and eliminated, effectively solving the problem of air bubbles in the slurry affecting the measurement accuracy of the grade analyzer.

[0020] (3) By combining the level gauge with the feeding time, the self-diagnosis of feeding blockage and material shortage interruption can be realized, reminding the operators to deal with it in time and avoiding the online grade analyzer from outputting incorrect results when the material is empty.

[0021] (4) After each test, the flushing water nozzle cleans the flow stabilization chamber and measurement and analysis pipeline to prevent the slurry from scaling and clogging, and to prevent the residual slurry from affecting the subsequent measurement results.

[0022] (5) Industrial trials have shown that after the online grade analyzer in the mineral processing plant adopted this device for sampling, the relative measurement error was reduced by 15% to 20%, and the measurement accuracy was greatly improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a slurry sampling and stabilization device for an online grade analyzer according to the present invention.

[0024] Figure 2 Signal connection diagram of the control unit and key components designed for this utility model.

[0025] The attached diagram is labeled as follows: 1-Stabilizing box; 2-Support; 3-Cylinder; 4-Feed pipe; 5-Level gauge; 6-Stabilizing chamber; 7-Return chamber; 8-Intermediate partition; 9-Mineral sample valve; 10-Return port; 11-Atomizing water nozzle; 12-Rinsing water nozzle; 13-Pipe clamp. Detailed Implementation

[0026] To better describe this utility model, the following detailed description, in conjunction with the accompanying drawings, provides an example of a slurry sampling and flow stabilization device for an online grade analyzer.

[0027] Depend on Figure 1 The schematic diagram shown below illustrates the structure of a slurry sampling and flow stabilization device for an online grade analyzer, based on the present invention. Figure 2As can be seen, the slurry sampling and stabilization device for an online grade analyzer of this utility model includes a stabilization box 1, a support 2 for supporting the stabilization box 1, a feed pipe 4, and a control unit. The control unit adopts a PLC control system. The feed pipe 4 is a flexible steel wire hose. The stabilization box 1 is divided into two chambers: a stabilization chamber 6 and a return chamber 7, which are separated by a partition 8. The height of the partition 8 is lower than the outer edge of the stabilization box 1. A cylinder 3 is installed on the upper part of the support 2, and the feed pipe 4 is fixed to the cylinder 3 by a pipe clamp 13. A mineral sample valve 9 is provided at the bottom of the stabilization chamber 6, and an atomizing water nozzle 11, a flushing water nozzle 12, and a level gauge 5 are provided on the side wall of the stabilization chamber 6. A return port 10 is provided at the bottom of the return chamber 7. The control unit is connected to the cylinder 3, the level gauge 5, the atomizing water solenoid valve of the atomizing water nozzle 11, and the flushing water solenoid valve of the flushing water nozzle 12, respectively. This invention also includes a solenoid valve assembly, which is connected to a control unit and then connected to the cylinder 3 and the mineral sample valve 9. The control unit is used to regulate the forward and backward movement of the cylinder 3. The level gauge 5 transmits signals to the control unit, which then controls the opening and closing of the atomizing water nozzle 11 and the rinsing water nozzle 12.

[0028] When ore sample analysis is required, the piston of cylinder 3 is in the initial position, and the feed pipe 4 is above the stabilizing chamber 6. The slurry flows into the stabilizing chamber 6 through the feed pipe 4. When the level gauge 5 detects that the set level has been reached within a set time and transmits the signal to the control unit, the control unit controls the cylinder 3 to move via the solenoid valve group. The piston of cylinder 3 extends, causing the feed pipe 4 to swing above the return chamber 7. After waiting for several seconds, when the air bubbles in the slurry in the stabilizing chamber 6 rise to the surface, the control unit controls the atomizing water nozzle 11 to open via the atomizing water solenoid valve. The atomized water breaks up the air bubbles on the surface of the slurry in the stabilizing chamber 6, thereby eliminating the air bubbles in the slurry. At this time, the slurry from the feed pipe 4 returns to the process flow through the return port 10.

[0029] When the liquid level in the stabilizing tank 6 fails to reach the set level within the set time, the feeding time expires. The control unit determines that the feeding pipeline 4 is blocked and the flow is interrupted, and an alarm is triggered to prompt maintenance personnel to troubleshoot and repair.

[0030] When the liquid level control fails, the slurry in the stabilizing tank 6 overflows through the intermediate partition 8 to the return tank 7, and returns to the process flow through the return port 10, thus preventing the slurry from overflowing outside the stabilizing tank 1.

[0031] After the air bubbles are eliminated, the sample valve 9 below opens, and the slurry flows through the valve and pipeline of the sample valve 9 to the grade analyzer for detection and analysis.

[0032] When the grade analyzer finishes its test and the liquid level in the stabilizing tank 6 is emptied, the control unit controls the flushing water nozzle 12 to open via the flushing water solenoid valve, flushing the pipelines of the stabilizing tank 6 and the online grade analyzer to remove residual slurry.

[0033] After rinsing is complete, sample valve 9 is closed, ready for the next round of testing.

[0034] Experimental verification shows that this invention, through the stabilizing chamber 6 and level gauge 5, allows the slurry to be output to the grade analyzer for analysis and measurement after reaching the set level. The slurry flow is more stable, effectively eliminating fluctuations in the feed flow rate. After the stabilizing chamber 6 reaches the set level, the feed pipe 4 is cut off to the return chamber 7, allowing the slurry in the stabilizing chamber 6 to settle. Air bubbles in the slurry rise to the surface, and by activating the atomizing water nozzle 11, these bubbles are broken up and eliminated, effectively solving the problem of air bubbles affecting the grade analyzer's measurement and significantly improving measurement accuracy. By combining the level gauge 5 with the feed time judgment, self-diagnosis of feed blockage and flow interruption due to insufficient material can be achieved, reminding operators to handle the situation promptly and preventing the grade analyzer from outputting incorrect results when there is no material. After each test, the flushing water nozzle 12 cleans the stabilizing chamber 6 and pipelines to prevent slurry scaling and blockage, and to prevent residual slurry from affecting subsequent measurement results.

[0035] This utility model discloses a slurry sampling and stabilizing device for online grade analyzers, which has been applied in online grade detection in copper, lead, zinc, and iron ore beneficiation plants. Compared with the slurry stabilizing device, the grade detection error is reduced by 15% to 20%, and the measurement accuracy is greatly improved.

Claims

1. A slurry sampling and flow stabilization device for an online grade analyzer, comprising a flow stabilization box (1), a support bracket (2) for supporting the flow stabilization box (1), and a feed pipe (4), characterized in that: The stabilizing box (1) is divided into two chambers: a stabilizing chamber (6) and a reflux chamber (7). The stabilizing chamber (6) and the reflux chamber (7) are separated by a middle partition (8). The height of the middle partition (8) is lower than the height of the outer edge of the stabilizing box (1). A cylinder (3) is installed on the upper part of the support (2). The feed pipe (4) is fixed to the cylinder (3) by a pipe clamp (13). A mineral sample valve (9) is set at the bottom of the stabilizing chamber (6). An atomizing water nozzle (11), a flushing water nozzle (12) and a level gauge (5) are set on the side wall of the stabilizing chamber (6). A reflux port (10) is set at the bottom of the reflux chamber (7).

2. The slurry sampling and stabilization device for an online grade analyzer as described in claim 1, characterized in that: It also includes a control unit for controlling the forward and backward movement of the cylinder (3), which is connected to the level gauge (5), the atomizing water solenoid valve of the atomizing water nozzle (11), and the flushing water solenoid valve of the flushing water nozzle (12), respectively.

3. A slurry sampling and stabilization device for an online grade analyzer as described in claim 1 or 2, characterized in that: The feed pipe (4) is made of flexible steel wire hose.

4. The slurry sampling and stabilization device for an online grade analyzer as described in claim 3, characterized in that: It also includes a solenoid valve assembly, which is connected to the control unit and then connected to the cylinder (3) and the sample valve (9).

Images