Device for detecting solid content in coal slime water

Abstract

The utility model relates to the technical field of coal slime water treatment, in particular to a coal slime water solid content detection device which comprises a supporting frame, and an ore pulp constant volume device is placed on the supporting frame. Lifting weighing parts are arranged at the bottom of the ore pulp constant volume container at intervals, and the weighing ends of the lifting weighing parts can jack the ore pulp constant volume container away from the supporting frame from bottom to top and weigh the ore pulp constant volume container. According to the utility model, the mass of solid matters in the slime water pulp can be accurately calculated, so that the accuracy of slime water pulp concentration calculation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal slime water treatment, in particular to a device for detecting solid content in coal slime water. Background Art

[0002] In the coal preparation plant coal slime water treatment process, a concentrator is usually used to concentrate the coal slime water to reach a set concentration. However, there is currently no suitable online detection sensor that can be directly used to detect the concentration of coal slime water in the concentrator; the detection of the coal slime water concentration in the concentrator basically relies on manual hand-held long poles to go deep into the concentrator, and qualitatively estimate the coal slime water concentration at a certain depth in the current concentrator by feeling the resistance encountered by the long pole. The detected coal slime water concentration cannot be quantified, and can only qualitatively estimate the coal slime water concentration at a certain depth, and cannot be monitored in real time. The labor intensity is high, which increases the labor intensity and work risks of operators.

[0003] The substances in the coal slurry are mainly divided into two categories, one is the solvent water, and the other is the solid solute dissolved in the water. Therefore, in order to solve the above technical problems, many technicians use the method of quantitatively weighing the coal slurry quality and the clean water quality to analyze and obtain the concentration of the coal slurry. In the patent CN211263064U, a new type of coal slurry quality online monitoring device is disclosed, which includes a constant volume barrel, an electromagnetic adsorption device and a weighing device. The online monitoring device can measure the concentration of coal slurry by the conversion relationship between the weight and concentration of solid substances in the coal slurry, and has a simple structure and convenient operation. However, in the actual use of the above-mentioned prior art, the constant volume barrel is always placed on the weighing device. When coal slurry water is added to the constant volume barrel, the weighing device will display the mass of the constant volume barrel in real time. The constant volume barrel is pressed on the weighing device for a long time, which will cause the weighing sensitive components in the weighing device to be damaged due to long-term unstable and continuous pressure shock, thereby causing the weighing data to be disordered or even wrong, reducing the accuracy of the calculation of the coal slurry concentration, so it is urgent to solve. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a method for detecting the solid content in coal slime water. The utility model can accurately calculate the mass of solid matter in coal slime water slurry, thereby improving the accuracy of coal slime water slurry concentration calculation.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for detecting solid content in coal slurry water comprises a support frame on which a slurry container is placed; a lifting weighing part is arranged at a spacing at the bottom of the slurry container, and the weighing end of the lifting weighing part can lift the slurry container off the support frame from bottom to top and weigh the slurry container.

[0007] As a further solution of the utility model: the lifting and weighing part includes a supporting bottom plate installed on the moving end of the horizontal moving part, a supporting top plate is arranged above the supporting bottom plate, and the supporting bottom plate and the supporting top plate are connected to each other by a scissors-type lifting bracket that can be lifted up and down in the vertical direction; a weighing scale is arranged on the horizontally arranged upper plate surface of the supporting top plate, and the weighing scale constitutes the weighing end.

[0008] As a further solution of the utility model: the horizontal moving part includes a mounting seat fixedly mounted on the ground, a horizontally arranged guide rail is fixed on the mounting seat, and a sliding base which can bring the weighing scale to the bottom of the slurry container is slidably arranged on the guide rail;

[0009] Wire drums are rotatably arranged at both ends of the guide rail, and the ends of the traction ropes wound on the wire drums are connected to the sliding base to pull the sliding base to perform reciprocating linear sliding movements on the guide rail.

[0010] As a further solution of the utility model: the support frame is provided with a positioning hole which passes through from top to bottom, and the slurry container is arranged in the positioning hole; the slurry container is a cylinder, and a conical funnel with an openable and closable bottom outlet is coaxially fixed inside the cylinder, and the cavity of the cylinder above the funnel and the cavity of the funnel cooperate with each other to form a liquid chamber for containing the slurry;

[0011] A positioning ring is coaxially fixed on the outer wall of the cylinder. The positioning ring is pressed from top to bottom at the opening of the positioning hole, and a matching gap is reserved between the hole wall of the positioning hole and the outer wall of the cylinder.

[0012] As a further solution of the utility model: an overflow port is opened on the cylinder wall located at the upper part of the funnel, an overflow pipe is arranged at the overflow port for receiving the liquid flowing out of the overflow port, and a micro flow switch is arranged inside the overflow pipe for detecting whether there is liquid overflow.

[0013] As a further solution of the utility model: it also includes a slurry pipe with slurry flowing inside, the side wall of the slurry pipe is connected to a slurry feed pipe, the discharge port of the slurry feed pipe is located above the opening of the cylinder, and the discharge trajectory of the slurry feed pipe extends into the interior of the cylinder.

[0014] As a further solution of the utility model: a cleaning component for cleaning the inner wall of the cylinder is arranged on the side of the cylinder, and the cleaning component includes a disc-shaped splash-proof cover that can cover the cylinder mouth, and a water inlet pipe for providing clean water is penetrated through the axis of the splash-proof cover; a nozzle connected to the water inlet pipe through a branch pipe is arranged on the lower plate surface of the splash-proof cover, and the nozzles are evenly arranged in sequence along the circumference of the splash-proof cover, and each nozzle points to the inner wall of the cylinder at a corresponding position.

[0015] As a further solution of the utility model: a cleaning lifting assembly for lifting the splash-proof cover is arranged at the cleaning assembly, the cleaning lifting assembly includes a telescopic rod which can be extended and retracted in a vertical direction, the telescopic end of the telescopic rod is connected to a horizontally arranged supporting cross bar, the splash-proof cover and the slurry feed pipe are installed on the cantilever end of the supporting cross bar, and the discharge port of the slurry feed pipe is located below the splash-proof cover, so that when the splash-proof cover is closed on the cylinder mouth in the vertical direction downward, the discharge port of the slurry feed pipe extends to the bottom surface of the inside of the funnel, and a discharge gap is formed between the discharge port and the bottom surface of the funnel.

[0016] As a further solution of the utility model: the cantilever end of the supporting crossbar is connected with a locking clamp, and the slurry feed pipe and the water inlet pipe are both clamped in the jaws of the locking clamp.

[0017] As a further solution of the utility model: the slurry feed pipe and the slurry pipe are connected to each other through a slurry feed hose; the water inlet pipe is connected to the circulating water system through the water inlet hose.

[0018] As a further solution of the present invention: a right limit sensor and a left limit sensor are respectively installed at two displacement limit positions of the sliding base at both ends of the guide rail.

[0019] As a further solution of the present invention: an axially vertically arranged sliding rod is installed on the support frame, a sliding block is arranged on the sliding rod for axial sliding along the sliding rod, and the tail end of the supporting cross bar is fixed on the sliding block; an upper limit sensor is installed at the upper moving limit position of the sliding block on the sliding rod; a lower limit sensor is installed at the lower moving limit position of the sliding block on the sliding rod.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The utility model has a lifting weighing part arranged at intervals at the bottom of the slurry container. After the weighing end of the lifting weighing part is loaded with a set volume of clean water and slurry inside the slurry container, it can lift the slurry container away from the support frame, and then accurately weigh the mass of the slurry container, and accurately calculate the content of solid matter in the set volume through mass conversion, and then solve the concentration of the slurry. The weighing end lifts and weighs the slurry container only when the slurry container needs to be weighed, which can avoid long-term contact between the weighing end and the slurry container, avoid damage to the weighing sensitive components, provide hardware support with high measurement sensitivity for accurate measurement of solid mass, and further ensure the accuracy of measurement.

[0022] 2. The utility model adopts a scissor-type bracket to lift the slurry container upward. Due to the stability of the scissor-type bracket, it can ensure that the slurry container will not shake during the lifting process, so as to ensure that the liquid will not splash out of the slurry container due to shaking. At the same time, it can be weighed stably, further improving the accuracy of weighing.

[0023] 3. The water inlet pipe of the utility model is connected to the water circulation system through the water inlet hose, and the water circulation system provides clean water for the water inlet pipe. The other end of the water inlet hose is connected to one end of the circulating water feed electric valve, and the other end of the circulating water feed electric valve is connected to the circulating water system. The circulating water is sprayed out through the nozzle. Under the action of the sprayed water, the residual slurry and solid particles in the slurry in the slurry container are cleared, ensuring that the slurry container is clean before each measurement, without residual slurry and solid particles in the slurry, thereby improving the measurement accuracy.

[0024] 4. A gap is formed between the hole wall of the positioning hole and the outer wall of the cylinder, which can prevent the cylinder from contacting the positioning hole during the rising process and eliminate weighing errors. Both the slurry feed hose and the water inlet hose are made of corrugated soft material to facilitate contraction and bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 It is a structural schematic diagram of the cleaning component in the utility model.

[0027] Figure 3 This is a schematic diagram of the device structure when the feeding is completed and ready for weighing in the utility model.

[0028] Figure 4 It is a structural schematic diagram of the weighing state in the utility model.

[0029] 10. Horizontal moving part; 11. Mounting seat; 12. Guide rail; 13. Sliding base; 14. Right limit sensor; 15. Left limit sensor;

[0030] 20. Lifting and weighing unit; 21. Supporting bottom plate; 22. Scissor lift bracket; 23. Supporting top plate; 24. Weighing scale;

[0031] 30. Loading part; 31. Support frame; 311. Positioning hole; 32. Slurry container; 321. Cylinder; 322. Funnel; 3211. Positioning ring; 3212. Overflow port; 3213. Overflow pipe; 3214. Micro flow switch; 33. Slurry feed pipe; 34. Slurry pipe;

[0032] 40. Cleaning unit; 41. Cleaning assembly; 411. Splash-proof cover; 412. Water inlet pipe; 413. Branch pipe; 414. Nozzle; 415. Water circulation system; 42. Cleaning lifting assembly; 421. Sliding rod; 422. Sliding block; 423. Telescopic rod; 424. Support cross bar; 425. Locking clamp; 426. Upper limit sensor; 427. Lower limit sensor. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figures 1 to 4 As shown, the utility model is mainly composed of a horizontal moving part 10, a lifting and weighing part 20, a loading part 30 and a cleaning part 40.

[0035] The horizontal moving part 10 mainly includes a mounting seat 11 , a guide rail 12 , a sliding base 13 , a right limit sensor 14 and a left limit sensor 15 .

[0036] The lifting and weighing part 20 mainly includes a supporting bottom plate 21 , a scissor lift bracket 22 , a supporting top plate 23 and a weighing scale 24 .

[0037] The charging part 30 mainly includes a support frame 31, a positioning hole 311, a slurry container 32, a cylinder 321, a funnel 322, a positioning ring 3211, an overflow port 3212, an overflow pipe 3213, a micro flow switch 3214, a slurry feed pipe 33 and a slurry pipe 34.

[0038] The cleaning part 40 mainly includes a cleaning component 41, a splash-proof cover 411, a water inlet pipe 412, a branch pipe 413, a nozzle 414, a water circulation system 415, a cleaning lifting component 42, a sliding rod 421, a slider 422, a telescopic rod 423, a supporting cross bar 424, a locking clamp 425, an upper limit sensor 426 and a lower limit sensor 427.

[0039] like Figure 1As shown, two long strip guide rails 12 arranged side by side are arranged on the mounting seat 11, and the guide rails 12 are made of I-beams. A sliding base 13 is slidably arranged on the guide rail 12, and a sliding groove cooperating with the guide rail 12 is provided at the bottom of the sliding base 13, and the sliding base 13 is slidably arranged on the guide rail 12. Drive motors are arranged at both ends of the guide rail 12, and the axis of the drive motor is arranged horizontally and perpendicular to the length direction of the guide rail 12. A traction rope is connected to both sides of the sliding base 13, and the other end of the traction rope is wound on the wire drum, and the wire drum is coaxially fixed to the rotating shaft of the drive motor. When in use, first, the drive motor on the right side rotates forward, and the drive motor on the left side is powered off or reversed, and then the sliding base 13 is pulled to slide to the right. When the sliding base 13 slides to the right limit sensor 14, the drive motor on the right side and the drive motor on the left side are both powered off. Next, the left drive motor can be made to rotate forward, and the traction rope can be wound up by the wire drum, thereby pulling the sliding base 13 to slide linearly to the left on the guide rail 12. During this process, the right drive motor is powered off or reversed.

[0040] The lifting and weighing part 20 includes a scissor-type lifting bracket. The support bottom plate 21 in the scissor-type lifting bracket is horizontally supported on the sliding base 13. The scissor-type lifting bracket 22 is installed on the support bottom plate 21, the support bottom plate 21 is fixed in the middle position of the sliding base 13, and the support top plate 23 is installed on the top of the scissor-type lifting bracket 22, thereby forming a complete scissor-type lifting bracket. The scissor-type lifting bracket 22 can be lifted up and down along the vertical direction. A weighing scale 24 is horizontally arranged on the support top plate 23, and the weighing scale 24 is used to weigh the solid content in the coal slime water.

[0041] When the sliding base 13 moves linearly along the guide rail 12 on the mounting seat 11 to the right limit sensor 14, the weighing scale 24 on the supporting top plate 23 coincides with the central axis of the slurry container 32 along the vertical direction. When the sliding base 13 moves linearly along the guide rail 12 on the mounting seat 11 to the left limit sensor 15, the weighing scale 24 coincides with the central axis of the slurry container 32 along the vertical direction, and the central axis completely staggers, which facilitates the unloading of the slurry container 32.

[0042] The loading part 30 includes a support frame 31 supported on the ground, and a positioning hole 311 for accommodating a slurry container 32 is provided on the support frame 31. The slurry container 32 includes a cylinder 321 with a vertical axis, and a hollow conical funnel 322 is coaxially installed inside the cylinder 321. The funnel 322 and the cylinder cavity at the upper part of the cylinder 321 constitute a liquid storage cavity for containing coal slurry water, and the bottom edge of the cylinder 321 can be used to support the weighing scale 24. The structure at the bottom of the funnel 322 is entirely located in the cylinder cavity at the lower part of the cylinder 321. A discharge electric valve for controlling the opening and closing of the bottom pipe opening of the funnel 322 is also arranged at the bottom of the funnel 322. The upper end of the discharge electric valve is connected to the bottom pipe opening of the funnel 322, and the lower end of the discharge electric valve is connected to the discharge pipe.

[0043] The slurry container 32 is coaxially inserted in the positioning hole 311, and a positioning ring 3211 is coaxially fixed to the outer wall of the cylinder 321. When the slurry container 32 is inserted in the positioning hole 311, the positioning ring 3211 is pressed from top to bottom on the opening of the positioning hole 311, so that the slurry container 32 passes through the positioning hole 311 and is suspended in the air. A matching gap is reserved between the hole wall of the positioning hole 311 and the outer wall of the cylinder 321, so that it is convenient for the weighing scale 24 to support the slurry container 32 from top to bottom and prevent sliding friction from occurring between the positioning hole 311 and the cylinder 321.

[0044] An overflow port 3212 is provided on the cylinder wall at the upper part of the cylinder 321 near the cylinder mouth, and an overflow pipe 3213 for catching the liquid flowing out of the overflow port 3212 is arranged at the bottom of the overflow port 3212, and a micro flow switch 3214 is installed at the feed port of the overflow pipe 3213 for real-time monitoring whether there is coal slurry, water slurry or circulating water flowing out of the overflow port 3212.

[0045] A micro flow switch 3214 for detecting the flow of liquid inside the overflow pipe 3213 is arranged on the tank wall of the overflow pipe 3213 .

[0046] A slurry feed pipe 33 communicating with a slurry pipe 34 for conveying slurry is also arranged at the entrance of the cylinder 321 , and the slurry flows into the cylinder 321 through the slurry feed pipe 33 .

[0047] The cleaning part 40 comprises a cleaning assembly 41 and a cleaning lifting assembly 42. The cleaning assembly 41 comprises an inlet pipe 412 arranged vertically along an axis, and the inlet pipe 412 is made of a steel pipe. The bottom of the inlet pipe 412 is coaxially fixed with a disc-shaped splash cover plate 411, and the diameter of the splash cover plate 411 is roughly the same as the inner diameter of the cylinder 321, so that the splash cover plate 411 can be coaxially pressed into the cylinder 321 along the vertical direction, and the gap between the splash cover plate 411 and the cylinder 321 wall is used for the flow of air. A plurality of branch pipes 413 connected to the inlet pipe 412 are arranged on the lower plate surface of the splash cover plate 411, and the axial direction of each branch pipe 413 is arranged radially along the splash cover plate 411, and each branch pipe 413 is uniformly distributed on the lower plate surface of the splash cover plate 411 along the circumferential direction of the splash cover plate 411. A plurality of nozzles 414 are sequentially arranged on each branch pipe 413 along the axial direction of the branch pipe 413 . The spraying direction of the nozzles 414 points to the wall of the cylinder 321 , thereby cleaning the wall of the cylinder 321 and the inner wall of the funnel 322 .

[0048] The water inlet pipe 412 is connected to the water circulation system 415 through the water inlet hose, and clean water is provided to the water inlet pipe 412 through the water circulation system 415. The other end of the water inlet hose is connected to one end of the circulating water feeding electric valve, and the other end of the circulating water feeding electric valve is connected to the circulating water system. The circulating water is sprayed out through the nozzle 414. Under the action of the sprayed water, the residual slurry and solid particles in the slurry in the slurry container 32 are cleared, ensuring that the slurry container 32 is clean before each measurement, without residual slurry and solid particles in the slurry, thereby improving the measurement accuracy.

[0049] The cleaning lifting assembly 42 includes a sliding rod 421 fixed on the support frame 31, and the axial direction of the sliding rod 421 is arranged vertically. A slider 422 is arranged slidably on the sliding rod 421. There is also a telescopic rod 423 arranged in parallel with the sliding rod 421, and the bottom of the slider 422 and the telescopic end of the telescopic rod 423 are fixed to each other, and then the slider 422 is driven to move up and down in the vertical direction through the telescopic rod 423. A support cross bar 424 arranged horizontally in the rod length direction is arranged on the side of the slider 422 close to the slurry container 32, and a locking clamp 425 for clamping the water inlet pipe 412 is fixed to the cantilever end of the support cross bar 424. Through the telescopic action of the telescopic rod 423 along the vertical direction, each nozzle 414 is driven to perform a reciprocating linear sliding action along the vertical direction, and then the cylinder wall of the cylinder 321 and the inner wall of the funnel 322 are cleaned.

[0050] The slurry feed pipe 33 and the circulating water inlet pipe 412 are located directly above the mouth of the cylinder 321 of the slurry container 32, and have no physical contact with the slurry container 32. The slurry feed pipe 33 can vertically penetrate into the bottom of the slurry container 32 without contacting any wall of the slurry container 32. The slurry feed pipe 33 is also fixed on the locking clamp 425, and the mouth of the slurry feed pipe 33 is lower than the position of the nozzle 414 along the vertical direction. Therefore, the slurry feed pipe 33 can vertically penetrate into the bottom of the slurry container 32 without contacting any wall of the slurry container 32, and gradually pour the coal slurry into the slurry container 32. In order to facilitate the movement of the slurry feed pipe 33, the slurry feed pipe 33 and the slurry pipe 34 are connected to each other through a slurry feed hose. The slurry feed hose is connected to the upper end of the slurry feed pipe 33, and the other end of the slurry feed hose is connected to the slurry feed electric valve, and the other end of the slurry feed electric valve is connected to the slurry pipe 34 of the thickening tank coal slurry water, and the low-concentration thickening tank feed coal slurry water that needs to be tested for solid content is sampled. The slurry feed hose and the water inlet hose are both made of corrugated soft material to facilitate contraction and bending.

[0051] The lifting and weighing part 20 has an automatic lifting function, and its lifting height and lowering height are limited. When the support top plate 23 moves to the right limit sensor 14 with the sliding base 13, the support top plate 23 begins to rise under the action of the scissor lift bracket 22. When the support top plate 23 rises to and contacts the bottom of the slurry container 32, the slurry container 32 is lifted up and separated from the support frame 31. A gap is formed between the hole wall of the positioning hole 311 and the outer wall of the cylinder 321, which can prevent the cylinder 321 from contacting the positioning hole 311 during the rising process, eliminating weighing errors. The bracket of the slurry container 32 is completely separated from the support frame 31, without physical contact, so that the weight weighed by the weighing scale 24 is only the weight of the slurry container 32 and the slurry inside the slurry container 32. When the weighing is completed, the lifting weighing part 20 automatically descends in height and completely lowers to the lowest point, so that the slurry container 32 is supported on the support frame 31 again, and the weighing scale 24 is completely separated from the bottom of the slurry container 32 and moves with the sliding base 13 to the left limit sensor 15.

[0052] This device is used to detect the solid content of low-concentration coal slurry water in the concentration tank, and its unit is g / L, that is, grams per liter. In order to reduce the measurement error and facilitate calculation, the maximum volume of the slurry container 32 that can hold slurry is designed to be 1L. Close the unloading electric valve and start pouring slurry into the slurry container 32 until the slurry in the slurry container 32 overflows from the overflow port 3212. At this time, the slurry in the slurry container 32 is exactly 1L.

[0053] In order to ensure the stability of the coal-water slurry level in the slurry container 32, the slurry container 32 is designed not to move; the weighing scale 24 moves; at the same time, the impact generated during slurry feeding and cleaning is prevented from damaging the weighing sensitive components of the weighing scale 24. The weighing scale 24 is moved to the bottom of the slurry container 32 when weighing is required, thereby protecting the weighing sensitive components of the weighing scale 24. When the lifting weighing part 20 moves from the right limit sensor 14 at the right end to the left limit sensor 15 at the left end on the guide rail 12 with the sliding base 13, the lower end of the slurry container 32 is hollowed out, which is convenient for unloading the slurry in the slurry container 32 and discharging the circulating water after cleaning.

[0054] When measuring the solid content in the coal slime water slurry, the slurry container 32 is first calibrated and weighed, and then the slurry is normally weighed.

[0055] The calibration weighing process is as follows:

[0056] Step 1: If Figure 2 As shown, the slurry feed pipe 33 and the water inlet pipe 412 installed on the cantilever end of the supporting cross bar 424, under the action of the telescopic rod 423, descend into the slurry container 32 along the vertical direction until the slider 422 descends to the lower limit sensor 427 and stops. At this time, the slurry feed pipe 33 descends to the bottom of the slurry container 32, and the splash-proof cover plate 411 just contacts the mouth of the cylinder 321 of the slurry container 32, and covers the mouth of the cylinder 321, thereby preventing the slurry material from splashing out of the slurry container 32 when entering the slurry container 32.

[0057] Step 2: Open the discharge electric valve and keep it open so that the slurry remaining inside the slurry container 32 can be discharged from the discharge pipe at the bottom. Open the circulating water feed electric valve, and the circulating water is sprayed out through the nozzle 414 to flush the inner wall of the slurry container 32 from the top of the slurry container 32. Flush for 3 seconds, close the circulating water feed electric valve, stay for 2 seconds, open the circulating water feed electric valve again, flush for 3 seconds, and cycle 3 times to flush the slurry remaining inside the slurry container 32 and the solid particles adhering to the inner wall of the slurry container 32, and discharge them through the discharge pipe to ensure that the inside of the slurry container 32 is clean. After the flushing is completed, close the circulating water feed electric valve, delay for 10 to 15 seconds to ensure that all the circulating water inside the slurry container 32 is discharged through the discharge pipe, and then close the discharge electric valve.

[0058] Step 3: Open the circulating water feed electric valve, and the circulating water is continuously fed into the slurry container 32 through the circulating water feed pipe until the circulating water overflows from the overflow port 3212; and when the micro flow switch 3214 detects the overflow of the circulating water, the circulating water feed electric valve is closed, and the circulating water feeding is completed.

[0059] Step 4: If Figure 3 As shown, after the circulating water feeding is completed, the slurry feed pipe 33 and the water inlet pipe 412 installed on the cantilever end of the supporting cross bar 424, under the action of the telescopic rod 423, rise in the vertical direction and separate from the slurry set container 32 until the slider 422 rises to the upper limit sensor 426 and stops. At this time, the splash-proof cover 411, the slurry feed pipe 33 and the water inlet pipe 412 are completely separated from the slurry set container 32, and the slurry feed pipe 33 and the splash-proof cover 411 are also completely separated from the circulating water level in the slurry set container 32, that is, the bottom discharge ends of the slurry feed pipe 33 and the water inlet pipe 412 do not contact the slurry set container 32 and the circulating water level, and at the same time, there is no circulating water overflowing from the overflow port 3212, and the micro-flow switch 3214 cannot detect the overflow of the circulating water and resets to the original state.

[0060] Step 5: If Figure 4 As shown, about one minute after the micro-flow switch 3214 detects no overflow of circulating water and resets to the original state, the lifting weighing part 20 with the weighing scale 24 moves along a straight path from the left limit sensor 15 at the left end to the right end on the guide rail 12 with the sliding base 13, and stops when it moves to the right limit sensor 14. At this time, the supporting top plate 23 begins to rise along the plumb direction under the action of the scissors lifting bracket 22, and the weighing scale 24 begins to contact the bottom of the slurry container 32. The supporting top plate 23 continues to rise until it reaches the highest point, lifting the slurry container 32 from the support frame 31 and separating it from the support frame 31; after stabilizing for 5 seconds, the weighing scale 24 starts weighing, and the weight after weighing is the effective weight, recorded as m0.

[0061] Step 6: After weighing, the weighing scale 24 falls to the lowest point along with the supporting top plate 23, and the supporting top plate 23 with the weighing scale 24 moves along with the sliding base 13 on the guide rail 12 from the right limit sensor 14 at the right end to the left end, and stops when it moves to the left limit sensor 15. Then, the unloading electric valve is opened, and the circulating water in the slurry container 32 starts to unload. The unloading state is maintained for 15 seconds, and then the unloading electric valve is closed.

[0062] Step 7: The slurry feed pipe 33 and the water inlet pipe 412 installed on the cantilever end of the supporting cross bar 424, under the action of the telescopic rod 423, are lowered into the slurry container 32 along the vertical direction until the slider 422 stops when it drops to the lower limit sensor 427. At this time, the slurry feed pipe 33 drops to the bottom of the slurry container 32, and the splash-proof cover plate 411 just contacts the mouth of the cylinder 321 of the slurry container 32, and covers the mouth of the cylinder 321, thereby preventing the slurry material from splashing out of the slurry container 32 when entering the slurry container 32, thereby completing the initialization of normal weighing.

[0063] The normal weighing process after the calibration measurement is completed is as follows:

[0064] Step 1: If Figure 3 As shown, the slurry feed pipe 33 and the water inlet pipe 412 installed on the cantilever end of the supporting cross bar 424, under the action of the telescopic rod 423, descend into the slurry container 32 along the vertical direction until the slider 422 descends to the lower limit sensor 427 and stops. At this time, the slurry feed pipe 33 descends to the bottom of the slurry container 32, and the splash-proof cover plate 411 just contacts the mouth of the cylinder 321 of the slurry container 32, and covers the mouth of the cylinder 321, thereby preventing the slurry material from splashing out of the slurry container 32 when entering the slurry container 32.

[0065] Step 2: Open the electric valve for slurry feeding, and the coal slurry water entering the thickening tank enters the slurry container 32 from the slurry pipe 34 of the coal slurry water in the thickening tank through the slurry feeding pipe 33. In order to prevent the solid particles in the coal slurry water slurry from settling and accumulating at the bottom of the slurry container 32, the discharge end of the slurry feeding pipe 33 extends into the bottom of the slurry container 32. The slurry particles entering the slurry container 32 are dispersed by the impact force of the discharge of the slurry feeding pipe 33, and are evenly distributed in the upper, middle and lower parts of the slurry container 32. The coal slurry water slurry is continuously fed into the slurry container 32 through the slurry feeding pipe 33 until the slurry overflows from the overflow port 3212. When the micro flow switch 3214 detects the overflowing slurry, the electric valve for slurry feeding is closed, and the coal slurry water slurry feeding is completed.

[0066] Step 3: If Figure 4 As shown, after the coal slime water slurry feeding is completed, the slurry feed pipe 33 and the water inlet pipe 412 installed on the cantilever end of the support cross bar 424, under the action of the telescopic rod 423, rise in the vertical direction to separate from the slurry container 32 until the slider 422 rises to the upper limit sensor 426 and stops. At this time, the splash-proof cover 411, the slurry feed pipe 33 and the splash-proof cover 411 are completely separated from the slurry container 32, and the slurry feed pipe 33 and the water inlet pipe 412 are also completely separated from the slurry liquid surface in the slurry container 32, that is, the bottom of the slurry feed pipe 33 and the slurry feed pipe 33 do not contact the slurry container 32 and the slurry liquid surface, and at the same time, there is no slurry overflow from the overflow port 3212, and the micro-flow switch 3214 cannot detect the slurry overflow and resets to the original state.

[0067] Step 4: If Figure 4As shown, about one minute after the micro-flow switch 3214 detects no overflow of circulating water and resets to the original state, the lifting weighing part 20 with the weighing scale 24 moves along a straight path from the left limit sensor 15 at the left end to the right end on the guide rail 12 with the sliding base 13, and stops when it moves to the right limit sensor 14. At this time, the supporting top plate 23 begins to rise along the plumb direction under the action of the scissor lift bracket 22, and the weighing scale 24 begins to contact the bottom of the slurry container 32. The supporting top plate 23 continues to rise until it reaches the highest point, lifting the slurry container 32 from the support frame 31 and separating it from the support frame 31; after stabilizing for 5 seconds, the weighing scale 24 starts weighing, and the weight after weighing is the effective weight, recorded as m.

[0068] Step 5: After the weighing is completed, the weighing scale 24 drops to the lowest point along with the supporting top plate 23, and the supporting top plate 23 containing the weighing scale 24 moves along with the sliding base 13 on the guide rail 12 from the right limit sensor 14 at the right end to the left end, and stops when it moves to the left limit sensor 15. Then open the unloading electric valve, and the slurry in the slurry container 32 begins to be unloaded. After the unloading state is maintained for 15 seconds, the slurry feed pipe 33 and the water inlet pipe 412 installed on the cantilever end of the supporting cross bar 424, under the action of the telescopic rod 423, descend into the slurry container 32 along the vertical direction, until the slider 422 drops to the lower limit sensor 427 and stops. At this time, open the circulating water feed electric valve, and the circulating water is sprayed out through the nozzle 414, starting from the upper part of the slurry container 32 to flush the inner wall of the slurry container 32, so that the slurry container 32 is restored to Figure 3 to the initial state, preparing for the next weighing.

[0069] By analogy, the real-time circulating online detection of the solid content in the low-concentration coal sludge water fed into the thickening tank can be achieved.

[0070] The weight after normal weighing each time is m, the calibrated weight is m0, and the volume of the slurry container 32 is 1L. The solid content H in the coal slurry water measured each time is calculated as follows:

[0071] H = m-m0;

[0072] Since the weight m0 of the slurry container 32 filled with circulating water is clean water and does not contain any solid particles, the weight m after each normal weighing is the weight of the coal slurry, and the coal slurry is composed of clean water and solid particles. Therefore, the weight m after normal weighing minus the weight m0 of clean water weighing is the content of solid particles contained in 1L volume. Since the concentration of the coal slurry water fed into the concentration tank is low and the solid content is small, the volume change caused by the solid particles entering the slurry container 32 can be ignored.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting solid content in coal slurry water, characterized in that: The invention comprises a support frame (31), on which a slurry container (32) is placed; a lifting weighing unit (20) is arranged at a spacing at the bottom of the slurry container (32); the weighing end of the lifting weighing unit (20) can lift the slurry container (32) from the support frame (31) from bottom to top and weigh the slurry container (32).

2. A device for detecting solid content in coal slurry water according to claim 1, characterized in that: The lifting and weighing part (20) comprises a supporting bottom plate (21) mounted on the moving end of the horizontal moving part (10); a supporting top plate (23) is arranged above the supporting bottom plate (21); the supporting bottom plate (21) and the supporting top plate (23) are connected to each other via a scissor lift bracket (22) that can be lifted up and down in a vertical direction; a weighing scale (24) is arranged on the upper plate surface of the supporting top plate (23) that is arranged horizontally, and the weighing scale (24) constitutes the weighing end.

3. A device for detecting solid content in coal slurry water according to claim 2, characterized in that: The horizontal moving part (10) comprises a mounting seat (11) fixedly mounted on the ground, a horizontally arranged guide rail (12) being fixed on the mounting seat (11), and a sliding base (13) being slidably arranged on the guide rail (12) and capable of bringing a weighing scale (24) to the bottom of a slurry container (32); Wire drums are rotatably arranged at both ends of the guide rail (12), and the ends of the traction ropes wound on the wire drums are connected to the sliding base (13) to pull the sliding base (13) to perform reciprocating linear sliding motion on the guide rail (12).

4. A device for detecting solid content in coal slurry water according to claim 3, characterized in that: The support frame (31) is provided with a positioning hole (311) which passes through from top to bottom, and the slurry container (32) is arranged in the positioning hole (311); the slurry container (32) is a cylinder (321), and a conical funnel (322) with an openable and closable bottom outlet is coaxially fixedly connected inside the cylinder (321); the cavity of the upper cylinder (321) of the funnel (322) and the cavity of the funnel (322) cooperate with each other to form a liquid holding cavity for holding slurry; A positioning ring (3211) is coaxially fixedly connected to the outer wall of the cylinder (321), and the positioning ring (3211) is pressed from top to bottom on the opening of the positioning hole (311), and a matching gap is reserved between the hole wall of the positioning hole (311) and the outer wall of the cylinder (321).

5. A device for detecting solid content in coal slurry water according to claim 4, characterized in that: An overflow port (3212) is provided on the cylinder wall of the cylinder (321) located above the funnel (322); an overflow pipe (3213) is arranged at the overflow port (3212) for receiving the liquid flowing out of the overflow port (3212); and a micro flow switch (3214) is arranged inside the overflow pipe (3213) for detecting whether liquid overflows.

6. A device for detecting solid content in coal slurry water according to claim 4 or 5, characterized in that: It also includes a slurry pipe (34) in which slurry flows. The side wall of the slurry pipe (34) is connected to a slurry feed pipe (33). The discharge port of the slurry feed pipe (33) is located above the opening of the cylinder (321), and the discharge track of the slurry feed pipe (33) extends into the interior of the cylinder (321).

7. A device for detecting solid content in coal slurry water according to claim 6, characterized in that: A cleaning component (41) for cleaning the inner wall of the cylinder (321) is arranged on the side of the cylinder (321), and the cleaning component (41) comprises a disk-shaped splash-proof cover plate (411) which can cover the cylinder mouth of the cylinder (321), and a water inlet pipe (412) for providing clean water is penetrated at the axis of the splash-proof cover plate (411); a nozzle (414) connected to the water inlet pipe (412) through a branch pipe (413) is arranged on the lower plate surface of the splash-proof cover plate (411), and each nozzle (414) is evenly arranged in sequence along the circumference of the splash-proof cover plate (411), and each nozzle (414) points to the inner wall of the cylinder (321) at a corresponding position.

8. A device for detecting solid content in coal slurry water according to claim 7, characterized in that: A cleaning lifting assembly (42) for lifting the splash-proof cover plate (411) is arranged at the cleaning assembly (41), the cleaning lifting assembly (42) comprising a telescopic rod (423) that is telescopic in a vertical direction, the telescopic end of the telescopic rod (423) being connected to a horizontally arranged supporting cross bar (424), the splash-proof cover plate (411) and the slurry feeding pipe (33) being mounted on the cantilever end of the supporting cross bar (424), and the discharge port of the slurry feeding pipe (33) being located below the splash-proof cover plate (411), so that when the splash-proof cover plate (411) is downwardly covered on the mouth of the cylinder (321) in the vertical direction, the discharge port of the slurry feeding pipe (33) extends to the bottom surface inside the funnel (322), and a discharge gap is formed between the discharge port and the bottom surface of the funnel (322).

9. A device for detecting solid content in coal slurry water according to claim 8, characterized in that: The cantilever end of the support crossbar (424) is connected to a locking clamp (425), and the slurry feed pipe (33) and the water inlet pipe (412) are both clamped in the jaws of the locking clamp (425).

10. A device for detecting solid content in coal slurry water according to claim 8, characterized in that: The slurry feed pipe (33) and the slurry pipe (34) are connected to each other via a slurry feed hose; the water inlet pipe (412) is connected to the circulating water system via the water inlet hose; The sliding base (13) is respectively provided with a right limit sensor (14) and a left limit sensor (15) at two displacement limit positions at both ends of the guide rail (12); The support frame (31) is provided with an axially vertically arranged sliding rod (421), a slider (422) is arranged on the sliding rod (421) to slide axially along the sliding rod (421), and the tail end of the supporting cross bar (424) is fixed on the slider (422); an upper limit sensor (426) is installed at the upper limit position of the slider (422) on the sliding rod (421); and a lower limit sensor (427) is installed at the lower limit position of the slider (422) on the sliding rod (421).

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