A detection device for the sedimentation velocity of materials in a pulp thickening tank

Abstract

The present invention relates to the technical field of mine thickeners, and specifically discloses a detection device for the sedimentation rate of materials in a pulp thickener, which includes a plurality of detection boxes. The detection boxes are installed on the side wall of the thickener and correspond to different sedimentation layers in the thickener. A partition is horizontally fixed inside the detection box, and the partition divides the detection box into a clear water chamber in the upper part and a detection chamber in the lower part. A sampling pipe is provided in the detection box, and a detector is installed in the detection chamber. A clarification tank is provided on one side of the thickener, and an overflow trough is opened at the top edge of the thickener near the clarification tank. In the present invention, the detection box samples and detects by itself, avoiding the need for staff to observe and judge the precipitation in the thickener. The detection results of the detection box are more intuitive and accurate; the staff can directly read the concentrations of multiple samples, thereby more accurately judging the sedimentation rate in the thickener, keeping the feeding rate of the thickener at the best, and keeping the efficiency of the thickener at a high level.

Description

Technical Field

[0001] The present invention relates to the technical field of mine thickeners, and particularly to a detection device for the sedimentation rate of materials in a pulp thickener. Background Art

[0002] In the process of chemical beneficiation, in order to ensure the mass fraction of the pulp required during leaching, a thickening operation is usually provided before leaching. The pulp after leaching and the slurry after chemical precipitation both need to be separated into solid and liquid phases to meet the requirements of subsequent operations. Generally, a thickener is used for solid-liquid separation. The pulp enters the thickener, and the solid particles settle under the action of gravity. The density difference between the solid and liquid phases causes them to stratify. Finally, the liquid overflows from the top of the device, and the thick phase is discharged from the bottom.

[0003] When using a thickener for separation, if the feed rate in the thickener is too fast, sedimentation will be insufficient, resulting in mud running, the clarifying tank being turbid, and the thickening effect being poor. When the feed rate in the thickener is too slow, the efficiency of the thickener will be low. Therefore, it is particularly important to detect the sedimentation rate of materials in the thickener, which can ensure the efficiency and thickening effect of the thickener. In existing thickeners, generally, workers observe the heights of each layer in the thickener with the naked eye and judge the precipitation situation based on the heights of different layers. However, even with an observation tank during the operation of the thickener, it is not easy to observe and judge the heights of different layers with the naked eye, which requires high requirements for workers and the results are not accurate enough. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and to propose a detection device for the sedimentation rate of materials in a pulp thickener.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A detection device for the sedimentation rate of materials in a pulp thickener includes a plurality of detection boxes. The detection boxes are installed on the side wall of the thickener and correspond to different sedimentation layers in the thickener. A partition is horizontally fixed inside the detection box, which divides the detection box into an upper clear water chamber and a lower detection chamber. A sampling pipe is provided in the detection box, and a detector is installed in the detection chamber. There is a clarifying tank on one side of the thickener. An overflow trough is opened at the top edge of the thickener near the clarifying tank. An overflow pool is provided outside the overflow trough, and the overflow pool is fixedly connected to the outer wall of the thickener. A vertical pipe is connected to the bottom of the overflow pool, and each clear water chamber is communicated with the vertical pipe through a connecting pipe.

[0007] Preferably, the sampling tube is fixedly connected to the partition board. The upper part of the sampling tube is located in the clear water cavity, and the lower part of the sampling tube is located in the detection cavity. One end of the sampling tube away from the concentration tank is fixedly connected to the inner wall of the detection box, and the other end of the sampling tube penetrates through the side wall of the concentration tank. An electric push rod is arranged along the length direction in the sampling tube. One end of the electric push rod is fixedly connected to the inner wall of the detection box, and a first sampling plate and a second sampling plate are installed at the telescopic end of the electric push rod. The second sampling plate is fixed at the end of the electric push rod, and the first sampling plate is connected to the side of the second sampling plate away from the concentration tank. A connecting rod is connected between the first sampling plate and the second sampling plate, and a through groove is opened at the bottom of the sampling tube.

[0008] Preferably, a moving groove is horizontally opened on the side wall of the through groove away from the concentration tank. An arc-shaped plate is slidably installed in the moving groove. One end of the arc-shaped plate away from the concentration tank is fixedly installed with a first telescopic rod, and the other end of the first telescopic rod is connected to the side wall of the moving groove. A scraping blade is connected to the top of the arc-shaped plate, and the top of the scraping blade can abut against the first sampling plate.

[0009] Preferably, an annular air groove is horizontally opened at the top of the sampling tube. Air holes are opened at the bottom of the annular air groove. A blocking block is slidably installed in the annular air groove, and the blocking block is located above the air holes.

[0010] Preferably, a sliding rod groove is horizontally opened on the side wall of the annular air groove away from the concentration tank. A sliding rod is slidably connected in the sliding rod groove. One end of the sliding rod close to the concentration tank is fixedly connected to the blocking block, and a pushing piece is fixedly connected to the bottom of the other end of the sliding rod. The bottom of the pushing piece can abut against the first sampling plate. A groove for the pushing piece to move is opened at the bottom of the sampling tube. A cleaning pipe is arranged on one side of the blocking block. One end of the cleaning pipe is communicated with the clear water cavity, and the other end is communicated with the inside of the sampling tube. A control valve is arranged in the cleaning pipe.

[0011] Preferably, one end of the blocking block away from the sliding rod is connected with a second telescopic rod, and the other end of the second telescopic rod is connected to the side wall of the annular air groove.

[0012] Preferably, a cleaning block is fixedly installed on the partition board. The cleaning block vertically penetrates through the partition board. The upper part of the cleaning block is located in the clear water cavity, and the lower part is located in the detection cavity. A first water hole is opened on one side of the upper part of the cleaning block. A sliding groove is vertically opened at the bottom of the cleaning block. A sliding block is slidably installed in the sliding groove. A buoyancy block is fixedly connected to the bottom of the sliding block. A second water hole is opened on the sliding block. A water tank is vertically opened on the sliding block. The bottom of the water tank is communicated with the detection cavity, and the top of the water tank is communicated with the second water hole.

[0013] Preferably, a water outlet hopper is arranged at the bottom of the detection cavity. The shape of the water outlet hopper is funnel-shaped. A water outlet pipe is connected to the bottom of the water outlet hopper. The bottoms of all the water outlet pipes are connected to a temporary storage box.

[0014] Preferably, a detector is also installed in the overflow pool, and a top plate for shading is arranged at the top of the overflow pool.

[0015] Preferably, the first sampling plate drives the scraping blade and the pushing blade to move through friction. A sealing plate is installed outside the electric push rod, and the outer ring of the sealing plate is connected to the inner wall of the sampling pipe. The pushing blade is located horizontally between the scraping blade and the thickening tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The detection box samples and detects by itself, avoiding the need for staff to observe and judge the precipitation in the thickening tank. The detection results of the detection box are more intuitive and accurate; the staff can directly read the concentrations of multiple samples, so as to more accurately judge the sedimentation speed in the thickening tank, keep the feeding speed of the thickening tank at the best, and keep the efficiency of the thickening tank at a high level.

[0018] 2. By sampling with the first sampling plate and the second sampling plate, the material being sedimented in the thickening tank will pass between the first sampling plate and the second sampling plate, and will not accumulate in large quantities between the first sampling plate and the second sampling plate. Compared with actively extracting samples from the thickening tank, the samples between the first sampling plate and the second sampling plate are closer to the concentration at the same horizontal height in the thickening tank, the sample concentration is more accurate, and the detection result is more accurate.

[0019] 3. After the space between the first sampling plate and the second sampling plate is filled with water and enters the interior of the thickening tank, it can minimize the disturbance to the interior of the thickening tank and reduce the impact on the material being sedimented. Moreover, the water between the first sampling plate and the second sampling plate is the water overflowing from the top of the thickening tank, which is extremely close to the water in the upper part of the thickening tank, further reducing the impact on the sedimentation process inside the thickening tank.

[0020] 4. By taking the sample out to the detection chamber for detection, it avoids a large amount of the continuously sedimenting material in the thickening tank from adhering to the detector, reducing the detection accuracy of the detector; the samples between the first sampling plate and the second sampling plate continuously enter the detection chamber, which has a flushing effect on the end of the detector, reducing the accumulation of material on the detector, and the detection chamber is a relatively closed space, avoiding the influence of factors such as light on the measurement in the detection chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a sectional view of the detection box shown in the present invention;

[0023] Figure 3 is a schematic diagram of the structure of the sampling pipe shown in the present invention;

[0024] Figure 4 For the present invention Figure 3 is an enlarged schematic view of part A;

[0025] Figure 5Cross-sectional view of the cleaning block shown in the present invention;

[0026] Figure 6 Cross-sectional view of the overflow pool shown in the present invention.

[0027] In the figure: 1, thickener; 2, clarifier; 3, overflow trough; 4, overflow pool; 5, vertical pipe; 6, detection box; 7, connecting pipe; 8, partition board; 9, sampling pipe; 10, clean water chamber; 11, detection chamber; 12, water outlet hopper; 13, water outlet pipe; 14, moving trough; 15, arc plate; 16, first telescopic rod; 17, electric push rod; 18, sealing plate; 19, first sampling plate; 20, second sampling plate; 21, connecting rod; 22, annular air groove; 23, second telescopic rod; 24, cleaning pipe; 25, stop block; 26, air hole; 27, sliding rod; 28, scraping blade; 30, sliding rod groove; 31, pushing blade; 32, cleaning block; 33, first water hole; 34, slider; 35, buoyancy block; 36, second water hole; 37, sliding groove; 38, water trough; 39, detector. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Referring to Figures 1-6 , a detection device for the sedimentation speed of materials in a pulp thickener, including a plurality of detection boxes 6, the detection boxes 6 are installed on the side wall of the thickener 1, and the detection boxes 6 correspond to different sedimentation layers in the thickener 1. A partition board 8 is horizontally fixed inside the detection box 6, and the partition board 8 divides the detection box 6 into an upper clean water chamber 10 and a lower detection chamber 11. A sampling pipe 9 is provided in the detection box 6, a detector 39 is installed in the detection chamber 11, a clarifier 2 is provided on one side of the thickener 1, an overflow trough 3 is opened at the top edge of the thickener 1 close to the clarifier 2, an overflow pool 4 is provided outside the overflow trough 3, the overflow pool 4 is fixedly connected to the outer wall of the thickener 1, a vertical pipe 5 is connected to the bottom of the overflow pool 4, and each clean water chamber 10 is communicated with the vertical pipe 5 through a connecting pipe 7.

[0030] As a technical optimization solution of the present invention, the sampling tube 9 is fixedly connected to the partition plate 8, and the upper part of the sampling tube 9 is located in the clear water chamber 10, and the lower part of the sampling tube 9 is located in the detection chamber 11. One end of the sampling tube 9 far from the thickener 1 is fixedly connected to the inner wall of the detection box 6, and the other end of the sampling tube 9 penetrates through the side wall of the thickener 1. An electric push rod 17 is arranged along the length direction in the sampling tube 9. One end of the electric push rod 17 is fixedly connected to the inner wall of the detection box 6, and a first sampling plate 19 and a second sampling plate 20 are installed at the telescopic end of the electric push rod 17. The second sampling plate 20 is fixed at the end of the electric push rod 17, and the first sampling plate 19 is connected to the side of the second sampling plate 20 far from the thickener 1. A connecting rod 21 is connected between the first sampling plate 19 and the second sampling plate 20, and a through groove is opened at the bottom of the sampling tube 9. By sampling with the first sampling plate 19 and the second sampling plate 20, the material being settled in the thickener 1 will pass between the first sampling plate 19 and the second sampling plate 20 and will not accumulate in large quantities between the first sampling plate 19 and the second sampling plate 20. When the electric push rod 17 drives the first sampling plate 19 and the second sampling plate 20 to retract, compared with actively extracting samples in the thickener 1, the samples between the first sampling plate 19 and the second sampling plate 20 are closer to the concentration at the same horizontal height in the thickener 1, the sample concentration is more accurate, and the detection result is more accurate.

[0031] As a technical optimization solution of the present invention, a moving groove 14 is horizontally opened on the side wall of the through groove far from the thickener 1. An arc-shaped plate 15 is slidably installed in the moving groove 14. One end of the arc-shaped plate 15 far from the thickener 1 is fixedly installed with a first telescopic rod 16, and the other end of the first telescopic rod 16 is connected to the side wall of the moving groove 14. A scraping blade 28 is connected to the top of the arc-shaped plate 15, and the top of the scraping blade 28 can be in contact with the first sampling plate 19. The first sampling plate 19 drives the arc-shaped plate 15 and the scraping blade 28 to move, and the samples between the first sampling plate 19 and the second sampling plate 20 flow into the detection chamber 11.

[0032] As a technical optimization solution of the present invention, an annular air groove 22 is horizontally opened at the top of the sampling tube 9, air holes 26 are opened at the bottom of the annular air groove 22, and a block 25 is slidably installed in the annular air groove 22. The block 25 is located above the air holes 26. When the cleaning pipe 24 injects water, the liquid level between the first sampling plate 19 and the second sampling plate 20 rises above the top of the first sampling plate 19, and the air between the first sampling plate 19 and the second sampling plate 20 will enter the annular air groove 22 to prevent air from entering the thickener 1 and affecting the sedimentation in the thickener 1.

[0033] As a technical optimization solution of the present invention, a slide bar groove 30 is horizontally formed on the side wall of the annular air groove 22 away from the concentration tank 1. A slide bar 27 is slidably connected in the slide bar groove 30. One end of the slide bar 27 close to the concentration tank 1 is fixedly connected to a stop block 25. A push piece 31 is fixedly connected to the bottom of the other end of the slide bar 27. The bottom of the push piece 31 can abut against the first sampling plate 19. A groove for the movement of the push piece 31 is formed at the bottom of the sampling pipe 9. A cleaning pipe 24 is provided on one side of the stop block 25. One end of the cleaning pipe 24 is communicated with the clean water cavity 10, and the other end is communicated with the inside of the sampling pipe 9. A control valve is provided in the cleaning pipe 24.

[0034] As a technical optimization solution of the present invention, one end of the stop block 25 away from the slide bar 27 is connected with a second telescopic rod 23, and the other end of the second telescopic rod 23 is connected with the side wall of the annular air groove 22. The stop block 25 and the slide bar 27 are reset by the second telescopic rod 23. Therefore, the first sampling plate 19 will not drive the push piece 31 to move after contacting the push piece 31, avoiding the water in the annular air groove 22 from entering between the first sampling plate 19 and the second sampling plate 20 during sampling.

[0035] As a technical optimization solution of the present invention, a cleaning block 32 is fixedly installed on the partition plate 8. The cleaning block 32 vertically penetrates the partition plate 8. The upper part of the cleaning block 32 is located in the clean water cavity 10, and the lower part is located in the detection cavity 11. A first water hole 33 is formed on one side of the upper part of the cleaning block 32. A chute 37 is vertically formed at the bottom of the cleaning block 32. A slider 34 is slidably installed in the chute 37. A buoyancy block 35 is fixedly connected to the bottom of the slider 34. A second water hole 36 is formed in the slider 34. A water tank 38 is vertically formed in the slider 34. The bottom of the water tank 38 is communicated with the detection cavity 11, and the top of the water tank 38 is communicated with the second water hole 36. When the sample flows out through the water outlet hopper 12 and the water outlet pipe 13, the buoyancy block 35 always floats on the water surface, and the height of the buoyancy block 35 gradually decreases. When the first water hole 33 on the cleaning block 32 coincides with the second water hole 36 on the slider 34 when the sample in the detection cavity 11 is about to completely flow out, the water in the clean water cavity 10 enters the detection cavity 11 through the first water hole 33, the second water hole 36 and the water tank 38 to clean the possible residual materials at the bottom of the detection cavity 11, avoiding a large amount of residual materials at the bottom of the water outlet hopper 12 and affecting the detection result during the next detection. When the water in the water outlet hopper 12 completely flows out, the bottom of the buoyancy block 35 abuts against the water outlet hopper 12, and the slider 34 blocks the first water hole 33.

[0036] As a technical optimization solution of the present invention, a water outlet hopper 12 is provided at the bottom of the detection chamber 11. The water outlet hopper 12 is funnel-shaped, and a water outlet pipe 13 is connected to the bottom of the water outlet hopper 12. The bottoms of all the water outlet pipes 13 are connected to a temporary storage tank. The funnel-shaped water outlet hopper 12 can discharge as much material in the sample as possible when the sample flows out, reducing the possibility of material accumulation in the detection chamber 11. At the same time, it is more convenient to clean the detection chamber 11 through the slider 34 and the cleaning block 32, and the cleaning is more thorough. When the water in the water chamber 10 enters the detection chamber 11 through the first water hole 33, the second water hole 36 and the water tank 38, the water will splash after contacting the buoyancy block 35, increasing the cleaning effect.

[0037] As a technical optimization solution of the present invention, a detector 39 is also installed in the overflow pool 4, and a top plate for shading is provided at the top of the overflow pool 4. A detector 39 is also installed in the overflow pool 4. When mud runs out in the thickening tank 1, the detector 39 in the overflow pool 4 can detect it in time, and the staff can handle it in time.

[0038] As a technical optimization solution of the present invention, the first sampling plate 19 drives the scraping blade 28 and the pushing blade 31 to move through friction. A sealing plate 18 is installed outside the electric push rod 17. The outer circle of the sealing plate 18 is connected to the inner wall of the sampling pipe 9. The pushing blade 31 is located between the scraping blade 28 and the thickening tank 1 in the horizontal direction.

[0039] The detector 39 used in the present invention is a photoelectric sludge concentration meter, which is a prior art. After inserting the detection end of the photoelectric sludge concentration meter into the liquid to be detected, the detection data can be directly read through the control panel.

[0040] During the use of the present invention, the staff continuously adds pulp to the thickening tank 1 through an external feeding device. The pulp settles in the thickening tank 1 and is divided into multiple layers. The water in the supernatant layer enters the clarification tank 2 through the overflow trough 3 and the overflow pool 4. The detection box 6 is installed on the side wall of the thickening tank 1 corresponding to the layer of the pulp in the thickening tank 1, but it should be avoided to be installed in the compression layer at the bottom of the thickening tank 1, because the impurity concentration in the compression layer is too high, which is not conducive to the detection of the detection box 6.

[0041] The water in the overflow pool 4 flows into the clean water chamber 10 through the vertical pipe 5 at the bottom of the overflow pool 4 and the connecting pipe 7. Therefore, the clean water chamber 10 is in a state of being filled with water. During the detection, the electric push rod 17 is initially in a contracted state, and the first sampling plate 19 is located between the pushing plate 31 and the scraping plate 28. At this time, the valve in the cleaning pipe 24 is opened, and the water in the clean water chamber 10 fills the space between the first sampling plate 19 and the second sampling plate 20. The electric push rod 17 slowly extends, pushing the first sampling plate 19 and the second sampling plate 20 to move towards the concentration tank 1. The first sampling plate 19 drives the pushing plate 31 to move through friction. The pushing plate 31 drives the sliding rod 27 to slide along the sliding rod groove 30. The stopper 25 moves along with the sliding rod 27 and compresses the second telescopic rod 23. After the stopper 25 moves, it no longer blocks the air hole 26. At this time, the cleaning pipe 24 continues to inject water, and the liquid level between the first sampling plate 19 and the second sampling plate 20 rises above the top of the first sampling plate 19. The air between the first sampling plate 19 and the second sampling plate 20 will enter the annular air groove 22. The top of the annular air groove 22 is communicated with the clean water chamber 10. The electric push rod 17 in the detection box 6 continues to extend, pushing the second sampling plate 20 into the concentration tank 1. After the first sampling plate 19 is separated from the pushing plate 31, under the elastic force of the second telescopic rod 23, it drives the stopper 25 and the sliding rod 27 to reset, blocking the air hole 26 again. The water between the first sampling plate 19 and the second sampling plate 20 enters the concentration tank 1. When the sediment in the concentration tank 1 settles, it passes between the first sampling plate 19 and the second sampling plate 20. After standing for a period of time, the electric push rod 17 contracts, and the first sampling plate 19 and the second sampling plate 20 move along with it. The sample stored between the first sampling plate 19 and the second sampling plate 20 enters the sampling pipe 9. The electric push rod 17 continues to contract. Since the stopper 25 and the sliding rod 27 have been reset, the first sampling plate 19 will not drive the pushing plate 31 to move after contacting the pushing plate 31. When the first sampling plate 19 moves to abut against the scraping plate 28, the first sampling plate 19 drives the arc-shaped plate 15 and the scraping plate 28 to move, and the sample between the first sampling plate 19 and the second sampling plate 20 will flow into the detection chamber 11. The detector 39 in the detection chamber 11 detects the sample. After the detection is completed, the electric push rod 17 returns to the initial position, and the arc-shaped plate 15 resets under the thrust of the first telescopic rod 16. The staff can directly read the concentrations of multiple samples, thereby more accurately judging the sedimentation speed in the concentration tank 1, keeping the feeding speed of the concentration tank 1 at the best, and keeping the efficiency of the concentration tank 1 at a relatively high level. The detection box 6 samples and detects by itself, avoiding the need for staff to observe and judge the sediment in the concentration tank 1. The detection results of the detection box 6 are more intuitive and accurate.

[0042] By sampling through the first sampling plate 19 and the second sampling plate 20, the material settling in the thickening tank 1 will pass between the first sampling plate 19 and the second sampling plate 20, and will not accumulate in large quantities between the first sampling plate 19 and the second sampling plate 20. When the electric push rod 17 drives the first sampling plate 19 and the second sampling plate 20 to retract, compared with actively extracting samples from the thickening tank 1, the samples between the first sampling plate 19 and the second sampling plate 20 are closer to the concentration at the same horizontal height in the thickening tank 1, the sample concentration is more accurate, and the detection result is more accurate.

[0043] After the space between the first sampling plate 19 and the second sampling plate 20 is filled with water and enters the interior of the thickening tank 1, it can minimize the disturbance to the interior of the thickening tank 1 and reduce the impact on the material being settled. Moreover, the water between the first sampling plate 19 and the second sampling plate 20 is the water overflowing from the top of the thickening tank 1, which is extremely close to the water in the upper part of the thickening tank 1, further reducing the impact on the sedimentation process inside the thickening tank 1. By taking the sample out to the detection chamber 11 for detection, compared with directly detecting the thickening tank 1 through the detector 39, after the detector 39 is placed into the thickening tank 1, a large amount of the continuously settling material in the thickening tank 1 will adhere to the detector 39, reducing the detection accuracy of the detector 39. If the detector 39 is cleaned inside the thickening tank 1, it will affect the material being settled in the thickening tank 1 and reduce the sedimentation efficiency of the thickening tank 1; and the detection chamber 11 is a relatively enclosed space, avoiding the influence of factors such as light on the measurement in the detection chamber 11; the samples between the first sampling plate 19 and the second sampling plate 20 continuously enter the detection chamber 11, having a flushing effect on the end of the detector 39 and reducing the accumulation of material on the detector 39.

[0044] After the detection in the detection chamber 11 is completed, when the sample flows out through the water outlet hopper 12 and the water outlet pipe 13, the buoyancy block 35 always floats on the water surface, and the height of the buoyancy block 35 gradually decreases. When the first water hole 33 on the cleaning block 32 coincides with the second water hole 36 on the slider 34 when the sample in the detection chamber 11 is about to completely flow out, the water in the clean water chamber 10 enters the detection chamber 11 through the first water hole 33, the second water hole 36 and the water tank 38 to clean the possible residual material at the bottom of the detection chamber 11, avoiding a large amount of residual material at the bottom of the water outlet hopper 12 and affecting the detection result during the next detection. When the water in the water outlet hopper 12 completely flows out, the bottom of the buoyancy block 35 abuts against the water outlet hopper 12, and the slider 34 blocks the first water hole 33. The speed at which the sample between the first sampling plate 19 and the second sampling plate 20 enters the detection chamber 11 is relatively fast, and the buoyancy block 35 drives the slider 34 to move upward at a relatively fast speed under the action of buoyancy. At this time, very little water enters the detection chamber 11 through the first water hole 33, the second water hole 36 and the water tank 38, having basically no impact on the detection result.

[0045] The funnel-shaped water outlet hopper 12 can discharge as much material in the sample as possible when the sample flows out, reducing the possibility of material accumulation in the detection chamber 11. At the same time, it is more convenient to clean the detection chamber 11 through the slider 34 and the cleaning block 32, and the cleaning is more thorough. When the water in the water chamber 10 enters the detection chamber 11 through the first water hole 33, the second water hole 36 and the water tank 38, the water will splash after contacting the buoyancy block 35, enhancing the cleaning effect.

[0046] A detector 39 is also installed in the overflow pool 4. When mud runs out in the thickening pool 1, the detector 39 in the overflow pool 4 can detect it in time, and the staff can handle it in time.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes should be covered within the protection scope of the present invention.

Claims

1. A detection device for the sedimentation velocity of materials in a pulp thickening tank, comprising a plurality of detection boxes (6), characterized in that, The detection box (6) is installed on the side wall of the thickener (1), and the detection box (6) corresponds to different sedimentation layers in the thickener (1). A partition plate (8) is horizontally fixed inside the detection box (6). The partition plate (8) divides the detection box (6) into an upper clear water chamber (10) and a lower detection chamber (11). A sampling pipe (9) is provided in the detection box (6), and a detector (39) is installed in the detection chamber (11). A clarifier (2) is provided on one side of the thickener (1). An overflow trough (3) is opened at the top edge of the thickener (1) close to the clarifier (2). An overflow pond (4) is provided outside the overflow trough (3). The overflow pond (4) is fixedly connected to the outer wall of the thickener (1). A vertical pipe (5) is connected to the bottom of the overflow pond (4). Each clear water chamber (10) is communicated with the vertical pipe (5) through a connecting pipe (7).

2. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 1, characterized in that, The sampling pipe (9) is fixedly connected to the partition plate (8). The upper part of the sampling pipe (9) is located in the clear water chamber (10), and the lower part of the sampling pipe (9) is located in the detection chamber (11). One end of the sampling pipe (9) away from the thickener (1) is fixedly connected to the inner wall of the detection box (6). The other end of the sampling pipe (9) penetrates through the side wall of the thickener (1). An electric push rod (17) is arranged along the length direction inside the sampling pipe (9). One end of the electric push rod (17) is fixedly connected to the inner wall of the detection box (6). A first sampling plate (19) and a second sampling plate (20) are installed at the telescopic end of the electric push rod (17). The second sampling plate (20) is fixed at the end of the electric push rod (17). The first sampling plate (19) is connected to the side of the second sampling plate (20) away from the thickener (1), and a connecting rod (21) is connected between the first sampling plate (19) and the second sampling plate (20). A through groove is opened at the bottom of the sampling pipe (9).

3. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 2, characterized in that, A moving groove (14) is horizontally opened on the side wall of the through groove away from the thickener (1). An arc-shaped plate (15) is slidably installed in the moving groove (14). One end of the arc-shaped plate (15) away from the thickener (1) is fixedly installed with a first telescopic rod (16). The other end of the first telescopic rod (16) is connected to the side wall of the moving groove (14). A scraping blade (28) is connected to the top of the arc-shaped plate (15). The top of the scraping blade (28) can abut against the first sampling plate (19).

4. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 3, characterized in that, A circular air groove (22) is horizontally opened at the top of the sampling pipe (9). Air holes (26) are opened at the bottom of the circular air groove (22). A blocking block (25) is slidably installed in the circular air groove (22). The blocking block (25) is located above the air holes (26).

5. The detection device for the material settlement speed in a pulp thickening tank according to claim 4, characterized in that, A slide bar groove (30) is horizontally formed on the side wall of the annular air groove (22) away from the thickener (1). A slide bar (27) is slidably connected in the slide bar groove (30). One end of the slide bar (27) close to the thickener (1) is fixedly connected to a stop block (25). A push piece (31) is fixedly connected to the bottom of the other end of the slide bar (27). The bottom of the push piece (31) can abut against the first sampling plate (19). A groove for the movement of the push piece (31) is formed at the bottom of the sampling pipe (9). A cleaning pipe (24) is arranged on one side of the stop block (25). One end of the cleaning pipe (24) is communicated with the clear water chamber (10), and the other end is communicated with the inside of the sampling pipe (9). A control valve is arranged in the cleaning pipe (24).

6. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 5, characterized in that, One end of the stop block (25) away from the slide bar (27) is connected to a second telescopic rod (23), and the other end of the second telescopic rod (23) is connected to the side wall of the annular air groove (22).

7. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 1, characterized in that, A cleaning block (32) is fixedly installed on the partition plate (8). The cleaning block (32) vertically penetrates through the partition plate (8). The upper part of the cleaning block (32) is located in the clear water chamber (10), and the lower part is located in the detection chamber (11). A first water hole (33) is formed on one side of the upper part of the cleaning block (32). A chute (37) is vertically formed at the bottom of the cleaning block (32). A slider (34) is slidably installed in the chute (37). A buoyancy block (35) is fixedly connected to the bottom of the slider (34). A second water hole (36) is formed in the slider (34). A water tank (38) is vertically formed in the slider (34). The bottom of the water tank (38) is communicated with the detection chamber (11), and the top of the water tank (38) is communicated with the second water hole (36).

8. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 7, characterized in that, An outlet hopper (12) is arranged at the bottom of the detection chamber (11). The outlet hopper (12) is in a funnel shape. The bottom of the outlet hopper (12) is connected to an outlet pipe (13). The bottoms of all the outlet pipes (13) are connected to a temporary storage box.

9. The detection device for the material sedimentation rate in a pulp thickening tank according to claim 1, wherein, A detector (39) is also installed in the overflow pool (4), and a top plate for shading is arranged at the top of the overflow pool (4).

10. The detection device for the material settlement speed in a pulp thickening tank according to claim 6, characterized in that, The first sampling plate (19) drives the scraping blade (28) and the push piece (31) to move through friction. A sealing plate (18) is installed outside the electric push rod (17). The outer ring of the sealing plate (18) is connected to the inner wall of the sampling pipe (9). The push piece (31) is located between the scraping blade (28) and the thickener (1) in the horizontal direction.

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