Sampling device for thickener

Abstract

The utility model discloses a sampling device for a thickener, and belongs to the technical field of thickener sampling. The device comprises a sampling barrel fixedly arranged on the wall of a thickener cavity, a sampling pipe opening is fixedly formed in the lower end of the sampling barrel, a sliding rod is arranged in the sampling barrel in a sliding fit mode, a pushing assembly used for pushing the sliding rod to move is arranged on the sampling barrel, and a cleaning mechanism used for conveying fluid into the sampling barrel is fixedly arranged on the sampling barrel; a diversion trench communicated with the sampling pipe orifice and the output end of the cleaning mechanism is formed in the side surface of the sliding rod, and the middle of the diversion trench deviates towards the cavity wall of the thickener. When the diversion trench needs to be cleaned, the three-way reversing valve can be opened, so that a water pipe is connected, the inside of the sampling barrel is cleaned, then the state of the three-way reversing valve is changed, an air pipe is connected, and the diversion trench is dried, so that sample liquid residues after sampling are reduced, and the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology for concentrators, and in particular to a sampling device for concentrators. Background Technology

[0002] A thickener is a continuously operating slurry thickening and water clarification device, widely used in mineral processing, metallurgy, chemical, coal, and environmental protection industries. It uses the principle of gravity sedimentation to cause solid particles in the slurry to settle, achieving solid-liquid separation, thereby increasing the slurry concentration or purifying the water, which is of great significance for resource recovery and environmental protection.

[0003] Sampling in the thickener is usually performed in the later stages of the concentration process, at which point the solution concentration and specific gravity need to be measured. Before sampling, open the valve at the sampling port, wait 10 seconds, then close it. Next, open the lower valve to allow a small amount of concentrated solution to flow out for testing. If the concentration does not meet the standard, continue concentrating for 25-30 minutes, and then sample again for testing until the concentration meets the requirements before proceeding with subsequent operations such as discharging.

[0004] The shortcomings of the existing technical solutions are as follows: after a sampling is completed, some sample adheres to the inner wall of the sampling port. Due to the relatively small space and complex structure of the sampling port, these residual substances are difficult to completely remove. When sampling is performed again, these residual substances mix with the newly collected sample, causing changes in the composition of the new sample. This affects the accuracy of the second sampling, making the test results unable to truly reflect the current sample condition, and introducing errors into subsequent analysis and judgment. Utility Model Content

[0005] This invention provides a sampling device for a concentrator, which can solve the problem in the prior art where some samples adhere to the inner wall of the sampling port after sampling, thus affecting the accuracy of the second sampling.

[0006] A sampling device for a concentrator includes a sampling cylinder fixedly mounted on the wall of the concentrator chamber. A sampling port is fixedly mounted at the lower end of the sampling cylinder. A sliding rod is slidably fitted inside the sampling cylinder. A pushing component for moving the sliding rod is provided on the sampling cylinder. A cleaning mechanism for conveying fluid into the sampling cylinder is fixedly mounted on the sampling cylinder. A guide groove is opened on the side of the sliding rod, connecting the sampling port and the output end of the cleaning mechanism. The middle of the guide groove is offset towards the wall of the concentrator chamber. When the end of the sliding rod moves into the inner side of the concentrator chamber wall, the sample liquid will enter the guide groove and then flow out from the sampling port.

[0007] As a further solution of the present utility model: The cleaning mechanism includes a three-way reversing valve fixedly arranged on the sampling cylinder. A set of output ports and two sets of input ports are arranged on the three-way reversing valve. The output port is communicated with the diversion groove. One set of the input ports is connected with a water pipe, and the other end of the water pipe is connected with a water supply device. The other set of input ports is connected with an air pipe, and the other end of the air pipe is connected with an air supply device.

[0008] As a further solution of the present utility model: The diversion groove extends along the side of the sliding rod in a "human" shape, and the upper end of the diversion groove is communicated with the output port of the three-way reversing valve, the lower end is communicated with the sampling pipe orifice, and the middle part is offset towards the wall of the thickener cavity along the axial direction of the sliding rod.

[0009] As a further solution of the present utility model: A threaded groove is opened at one end of the sliding rod away from the wall of the thickener cavity. The pushing component includes a threaded rod threadedly connected with the threaded groove, and a hand wheel rotatably arranged at one end of the sampling cylinder close to the wall of the thickener cavity. The end of the threaded rod away from the threaded groove is coaxially fixedly connected with the hand wheel. A guiding component is arranged between the sliding rod and the sampling cylinder.

[0010] As a further solution of the present utility model: The guiding component includes a guiding groove opened on the sliding rod and extending along the axial direction of the sliding rod. The guiding groove is not communicated with the diversion groove. A guiding block slidably matched with the guiding groove is fixedly arranged on the inner side of the sampling cylinder.

[0011] As a further solution of the present utility model: A valve for controlling the flow state of the sampling pipe orifice is arranged on the sampling pipe orifice.

[0012] As a further solution of the present utility model: The valve is a flow regulating valve that can be manually adjusted for flow rate.

[0013] As a further solution of the present utility model: A sealing sliding opening is opened on the inner side of the wall of the thickener cavity. The axis of the sealing sliding opening coincides with the axis of the sampling cylinder. A sealing plate slidably matched with the side wall of the sealing sliding opening is fixedly arranged at one end of the sliding rod close to the wall of the thickener cavity.

[0014] As a further solution of the present utility model: A sealing ring matched with the shape of the sliding rod is arranged on the inner side of the sampling cylinder. The sealing ring is located between one end of the sliding rod away from the wall of the thickener cavity and the diversion groove.

[0015] As a further solution of the present utility model: A sealing gasket is fixedly arranged on the inner side of the sealing sliding opening.

[0016] The beneficial effects of the present utility model:

[0017] 1. When the guide channel needs to be cleaned, the three-way reversing valve can be opened to connect the water pipe. The cleaning fluid delivered by the water pipe is forced into the sampling cylinder and moves along the guide channel to clean the sample liquid inside the guide channel, the sample liquid at the end of the slide rod, and the sample liquid in the sampling tube opening, thus cleaning the inside of the sampling cylinder. Then, the state of the three-way reversing valve is changed to connect the air pipe. The airflow output by the air pipe will impact the guide channel and flush the cleaning fluid out of the guide channel, thus drying the guide channel, thereby reducing the sample liquid residue after sampling and improving the accuracy of detection.

[0018] 2. In use, when sampling is required, the handwheel can be rotated to rotate the threaded rod inside the threaded groove, which in turn moves the slide rod forward, causing the sealing plate to move along the sealing slide until the sealing plate disengages from the sealing slide. The sample liquid enters the guide groove from the sealing slide and flows along the guide groove into the sampling tube. The test bottle is placed at the lower end of the sampling tube, and the valve is manually opened to adjust the flow rate of the output sample liquid, thereby achieving the output of the sample liquid. After the sampling operation is completed, the handwheel is rotated in the opposite direction, causing the threaded rod to rotate inside the threaded groove, which in turn moves the slide rod backward, causing the sealing plate to re-enter the sealing slide, thus isolating the sampling tube from the concentrator. Through the guiding effect of the guide groove, sampling and cleaning are achieved. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a sampling device for a concentrator provided by this utility model;

[0020] Figure 2 A schematic diagram of the overall longitudinal section structure of a sampling device for a concentrator provided by this utility model;

[0021] Figure 3 A schematic diagram of the sliding rod structure of a sampling device for a concentrator provided by this utility model;

[0022] Figure 4 A schematic diagram of the guide channel structure for sampling in a concentrator provided by this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Concentrator chamber wall; 101. Sealing slide; 2. Sampling tube; 201. Sampling port; 202. Valve; 203. Guide block; 3. Threaded rod; 4. Handwheel; 5. Slide rod; 501. Threaded groove; 502. Sealing plate; 503. Flow guide groove; 504. Guide groove; 6. Cleaning mechanism; 601. Three-way reversing valve; 602. Water pipe; 603. Air pipe. Detailed Implementation

[0025] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] like Figures 1 to 4 As shown in the figure, the sampling device for a concentrator provided in this embodiment of the present invention includes a sampling cylinder 2 fixedly disposed on the cavity wall 1 of the concentrator, and a sampling port 201 fixedly disposed at the lower end of the sampling cylinder 2, as shown in the figure. Figure 1 As shown, a valve 202 is provided on the sampling port 201 to control the flow state of the sampling port 201. Preferably, it is a flow regulating valve that allows for manual adjustment of the flow rate, which facilitates adjustment of the output flow rate during sampling.

[0027] A cleaning mechanism 6 for supplying fluid to the sampling cylinder 2 is fixedly installed on the sampling cylinder 2. The cleaning mechanism 6 includes a three-way reversing valve 601 fixedly installed on the sampling cylinder 2. The three-way reversing valve 601 is provided with one set of output ports and two sets of input ports. The output port of the three-way reversing valve 601 is connected to the inside of the sampling cylinder 2. One set of input ports is connected to a water pipe 602, the other end of which is connected to a distillation water machine. The other set of input ports is connected to a gas pipe 603, the other end of which is connected to a nitrogen storage tank.

[0028] The sampling cylinder 2 has a sliding rod 5 inside, and a guide groove 503 is opened on the side of the sliding rod 5, such as... Figure 3 As shown, the guide channel 503 extends along the side of the slide rod 5 in a "V" shape. The upper end of the guide channel 503 is connected to the output port of the three-way reversing valve 601, and the lower end is connected to the sampling tube port 201. The middle part is offset towards the wall of the concentrator chamber 1 along the axis of the slide rod 5. The sampling tube 2 is equipped with a pushing component for moving the slide rod 5. When the end of the slide rod 5 moves into the inner side of the concentrator chamber 1 under the pushing action of the pushing component, the sample liquid will enter the interior of the guide channel 503 and then flow out from the sampling tube port 201 through the guide channel 503, thus realizing the sampling operation.

[0029] The slide rod 5 has a threaded groove 501 at the end away from the wall 1 of the concentrator cavity, such as... Figure 2As shown, the driving assembly includes a threaded rod 3 threadedly connected to the threaded groove 501, and a handwheel 4 rotatably mounted at one end of the sampling cylinder 2 near the concentrator chamber wall 1. The end of the threaded rod 3 away from the threaded groove 501 is coaxially fixedly connected to the handwheel 4. A guide assembly is provided between the slide rod 5 and the sampling cylinder 2 to prevent the slide rod 5 from rotating with the threaded rod 3. The guide assembly includes a guide groove 504 extending axially along the slide rod 5. The guide groove 504 is not connected to the flow channel 503. A guide block 203 is fixedly mounted inside the sampling cylinder 2 and slides in cooperation with the guide groove 504. In use, rotating the handwheel 4 rotates the threaded rod 3, which in turn moves the slide rod 5. The guide groove 504 moves along the guide block 203, thus ensuring that the slide rod 5 can only move axially, achieving a stable sampling effect.

[0030] A sealing ring, matching the shape of the slide rod 5, is provided on the inner side of the sampling tube 2. The sealing ring is located between the end of the slide rod 5 away from the concentrator chamber wall 1 and the guide groove 503. The sealing ring maintains the sealing effect between the sampling tube 2 and the slide rod 5, preventing the sample liquid from flowing from the guide groove 503 to the rear end of the sampling tube 2. The length of the slide rod 5 can be extended as needed, so that the sealing ring can contact the circular cross-section of the slide rod 5, thereby ensuring that the sealing ring can better fit the shape of the inner side of the sampling tube 2 and the outer side of the slide rod 5.

[0031] In another embodiment, a sealing slide 101 is provided on the inner side of the concentrator chamber wall 1. The axis of the sealing slide 101 coincides with the axis of the sampling cylinder 2. A sealing plate 502 is fixedly installed on one end of the slide rod 5 near the concentrator chamber wall 1, which slides and engages with the side wall of the sealing slide 101. When the sealing plate 502 is not disengaged from the sealing slide 101, the sample liquid will not enter the interior of the sampling cylinder 2 from the sealing slide 101. Only when the sealing plate 502 is completely disengaged from the sealing slide 101 will the sample liquid enter the interior of the sealing slide 101. A sealing gasket can also be provided on the inner side of the sealing slide 101 to improve the sealing effect.

[0032] Working principle: When sampling is required, the handwheel 4 can be rotated to drive the threaded rod 3 to rotate inside the threaded groove 501, which in turn drives the slide rod 5 to move forward, so that the sealing plate 502 moves along the sealing slide 101 until the sealing plate 502 disengages from the sealing slide 101. The sample liquid enters the guide groove 503 from the sealing slide 101 and enters the sampling tube 201 along the guide groove 503. The test bottle is placed at the lower end of the sampling tube 201, and the valve 202 is manually opened to adjust the flow rate of the output sample liquid, thereby realizing the output of the sample liquid.

[0033] After the sampling operation is completed, rotate the handwheel 4 in the reverse direction. The handwheel 4 drives the threaded rod 3 to rotate inside the threaded groove 501, which in turn drives the slide rod 5 to move backward, causing the sealing plate 502 to re-enter the sealing slide port 101, thereby isolating the sampling cylinder 2 from the inside of the concentrator. Open the three-way reversing valve 601 to connect the water pipe 602. The cleaning fluid delivered by the water pipe 602 is forced into the sampling cylinder 2 and moves along the guide groove 503, washing away the sample fluid inside the guide groove 503, the sample fluid at the end of the slide rod 5, and the sample fluid in the sampling tube port 201, thus cleaning the inside of the sampling cylinder 2. Then change the state of the three-way reversing valve 601 to connect the air pipe 603. The airflow output from the air pipe 603 will impact the guide groove 503, flushing the cleaning fluid out of the guide groove 503, thus drying the guide groove 503.

[0034] In this embodiment, if solid particles are present in the sample solution, the sealing slide 101 and sealing plate 502 may not be required to avoid solid particles getting stuck between the sealing slide 101 and sealing plate 502 and affecting the performance. All of these fall within the protection scope of this patent.

[0035] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A sampling device for a thickener, comprising a sampling cylinder (2) fixedly arranged on the cavity wall (1) of the thickener. A sampling pipe opening (201) is fixedly arranged at the lower end of the sampling cylinder (2). It is characterized in that: A slide bar (5) is slidably fitted inside the sampling cylinder (2). A pushing component for pushing the slide bar (5) to move is arranged on the sampling cylinder (2). A cleaning mechanism (6) for conveying fluid into the sampling cylinder (2) is fixedly arranged on the sampling cylinder (2); A diversion groove (503) communicating the sampling pipe opening (201) and the output end of the cleaning mechanism (6) is formed on the side surface of the slide bar (5). The middle of the diversion groove (503) deviates towards the cavity wall (1) of the thickener. When the end of the slide bar (5) moves into the inner side of the cavity wall (1) of the thickener, the sample liquid will enter the inside of the diversion groove (503) and then flow out from the sampling pipe opening (201).

2. The sampling device for a concentrator as described in claim 1, characterized in that, The cleaning mechanism (6) comprises a three-way reversing valve (601) fixedly arranged on the sampling cylinder ( 3. The sampling device for a concentrator as described in claim 2, characterized in that, ​ 4. A sampling device for a concentrator as described in claim 3, characterized in that, ​ 5. A sampling device for a concentrator as described in claim 4, characterized in that, ​ 6. A sampling device for a concentrator as described in claim 3 or 4, characterized in that, ​ 7. A sampling device for a concentrator as described in claim 6, characterized in that, ​ 8. A sampling device for a concentrator as described in claim 3 or 4, characterized in that, ​ 9. A sampling device for a concentrator as described in claim 1, characterized in that, The sampling tube (2) is provided with a sealing ring that matches the shape of the slide bar (5). The sealing ring is located between the end of the slide bar (5) away from the wall (1) of the concentrator and the guide groove (503).

10. A sampling device for a concentrator as described in claim 8, characterized in that, A sealing gasket is fixedly provided on the inner side of the sealing slide (101).

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