Wet limestone ball mill for desulfurization with buffering effect and use method thereof

Abstract

The present invention relates to the technical field of ball mills, and more particularly to a wet limestone ball mill for desulfurization with a buffering function, comprising: two fixed frames, each having a placement hole at its center, the inner walls of the two placement holes being connected to a ball mill barrel for rotation; a buffer mechanism, the buffer mechanism being used to provide shock absorption and buffering treatment to the ball mill barrel during rotation, the buffer mechanism also comprising a vibration detection assembly for detecting vibration. Through the slurry detection mechanism, the ball mill barrel rotates, driving the second liner to rotate. The second liner is subjected to resistance from the slurry, prompting the sliding block to slide in the detection groove, causing the conductive sheet to slide on the resistor plate, and thus changing the resistance value of the sliding rheostat. In the second detection circuit, electrical parameters such as current and voltage change accordingly, and the PLC controller calculates the concentration information of the slurry in the ball mill barrel based on the current.

Description

Technical Field

[0001] The invention relates to the technical field of ball mills, in particular to a wet limestone ball mill for desulfurization with a buffering effect and a use method thereof. Background Art

[0002] In industrial processes such as coal-fired power plants and steel smelting, sulfur dioxide emissions cause serious environmental pollution, making flue gas desulfurization technology crucial. The wet limestone-gypsum desulfurization process, with its high desulfurization efficiency and mature technology, has become one of the most widely used desulfurization methods. In this process, the wet limestone ball mill, as the core equipment, undertakes the critical task of grinding the limestone raw material into a slurry of the required particle size. Its operating principle is that the steel balls and the material collide and grind each other within the cylinder, continuously refining the limestone particles to form a limestone slurry that meets the requirements of the desulfurization reaction.

[0003] Existing ball mills generate large vibrations during operation. Traditional shock absorption methods mostly use shock-absorbing elements such as springs and rubber, which have limited shock absorption effects and are difficult to dynamically adjust according to the actual vibration conditions of the ball mill. Long-term vibration not only affects the service life of the equipment, but may also lead to a decrease in the operating stability of the equipment, increase maintenance costs and downtime; and the concentration of the slurry in the ball mill has a direct impact on the desulfurization efficiency, but the existing slurry concentration monitoring and adjustment methods are relatively backward, and cannot detect the slurry concentration in real time and accurately and automatically adjust the feed amount and water injection amount according to the concentration change, which can easily cause the slurry concentration to be too high or too low, thereby reducing the desulfurization effect and increasing energy consumption and production costs; and during the discharging process of the ball mill, the filter screen is prone to clogging, affecting the discharging efficiency. Existing anti-clogging measures often require regular manual cleaning, which not only increases labor costs but may also cause production interruptions due to untimely cleaning. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a wet limestone ball mill for desulfurization with a buffering effect and a method of use, which can effectively solve the problems of slurry concentration monitoring and adjustment lag and easy clogging of the filter plate during discharge in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a wet limestone ball mill for desulfurization with a buffering effect, comprising:

[0007] Two fixed frames, each of which has a placement hole at its center, and the inner walls of the two placement holes are connected to the ball mill barrel in a manner that rotates together;

[0008] A buffer mechanism, the buffer mechanism is used to perform shock absorption and buffering processing when the ball mill barrel rotates, and the buffer mechanism also includes a vibration detection component for detecting vibration;

[0009] A slurry detection mechanism, comprising a detection groove provided on the inner circumferential wall of the ball mill barrel, a sliding block being slidably connected to the inner wall of the detection groove, a conductive sheet being fixedly connected to the outer wall of the sliding block, a resistor plate being fixedly connected to the inner wall of the detection groove and in sliding contact with the conductive sheet, the resistor plate and the conductive sheet forming a sliding rheostat;

[0010] The adaptive adjustment mechanism is used to adaptively adjust the feeding amount and the water injection amount according to the slurry detection mechanism.

[0011] Preferably, the bottom ends of the two fixed frames are each provided with a fixed seat, the outer wall of one of the fixed seats is fixedly connected to an L-shaped support seat, the top of the L-shaped support seat is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a small gear, the outer wall of the ball mill barrel is fixedly provided with a large gear, the large gear is meshed with the small gear, the end close to the large gear is a feed port, a discharge machine is provided at the feed port, the outer wall of the ball mill barrel is rotatably provided with a discharge ring, a plurality of discharge ports are opened between the ball mill barrel and the discharge ring, the outer wall of one of the fixed seats is fixedly connected to a suction pump, the suction end of the suction pump is fixedly connected to the discharge ring, and the interior of the ball mill barrel is filled with a large number of steel balls.

[0012] Preferably, the buffer mechanism includes a placement groove opened on the inner wall on the opposite side of the fixed seat, and the inner walls of the two placement grooves are respectively fixedly connected with an N-level electromagnet and an S-level electromagnet. A water bag is fixedly connected inside the fixed seat, and the interior of the water bag is filled with magnetorheological fluid. The bottom end of the fixed frame is wrapped by the water bag, and the outer peripheral wall of the fixed frame and the top of the fixed seat are jointly fixedly connected with a rubber sleeve.

[0013] Preferably, the vibration detection component includes a pressure sensor fixedly connected to the inner bottom wall and the side walls of the support base, and the electrical signal of the pressure sensor is connected to the PLC controller to form a first detection loop.

[0014] Preferably, the slurry detection mechanism also includes a reset groove opened on the inner wall of the detection groove, the inner wall of the reset groove is fixedly connected to a first spring, the other end of the first spring is fixedly connected to the sliding block, the inner wall of the ball mill barrel is paved with a plurality of first lining plates, the top of the sliding block is fixedly connected to a second lining plate, there is no first lining plate on the left and right sides of the second lining plate, the conductive sheet and the resistor plate are electrically connected to the PLC controller to form a second detection circuit, and when the conductive sheet slides on the resistor plate toward the side away from the reset groove, the resistance of the sliding rheostat in the second detection circuit gradually increases.

[0015] Preferably, the adaptive adjustment mechanism includes an arc-shaped extension plate fixedly connected to the outer wall of the feeder, the other end of the arc-shaped extension plate is fixedly connected to a fixed plate, the outer wall of the fixed plate is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a blocking plate, and the blocking plate is used to block the feed port, and the blocking plate is in rotational contact with the inner wall of the ball mill barrel.

[0016] Preferably, the outer wall of one of the fixed frames is fixedly connected to a connecting plate, the outer wall of the connecting plate is fixedly connected to a water inlet ring, the water inlet ring is in rotational contact with the outer wall of the ball mill barrel, the top of the fixed seat is fixedly connected to a water pump, the pumping end of the water pump is connected to an external water tank, the discharge end of the water pump is fixedly connected to a drain pipe, the other end of the drain pipe is connected to the inside of the water inlet ring, the inner wall of the ball mill barrel is provided with two symmetrical water outlets, and the water outlets are connected to the inside of the water inlet ring, the inner wall of the water outlet is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a water baffle, the water baffle is used to block the water outlet, a second spring is fixedly connected between the sliding groove and the water baffle, the inner wall of the sliding groove is fixedly connected to an electromagnetic plate, the outer wall of the water baffle facing the electromagnetic plate is fixedly connected to a permanent magnet plate, the electromagnetic plate and the permanent magnet plate magnetically repel each other, and the PLC controller is electrically connected to the electromagnetic plate and the second motor to form an adjustment loop.

[0017] Preferably, the outer wall of the first lining plate near the discharge end is slidably connected to a filter screen plate, a plurality of third springs are fixedly connected between the filter screen plate and the inner wall of the ball mill barrel, a plurality of electromagnetic blocks are fixedly connected to the outer wall of the filter screen plate facing the third spring, a plurality of permanent magnet blocks opposite to the electromagnetic blocks are fixedly connected to the inner wall of the ball mill barrel, the electromagnetic blocks are magnetically attracted to the permanent magnet blocks, and the PLC controller is electrically connected to the electromagnetic blocks to form an anti-blocking circuit.

[0018] Preferably, the method of using the wet limestone ball mill for desulfurization with buffering effect is as follows:

[0019] S1: Start the first motor to drive the ball mill barrel to rotate, and add limestone and water into the ball mill barrel from the feed port through the feeder. The steel balls in the ball mill barrel grind the materials;

[0020] S2: During the rotation of the ball mill barrel, the pressure sensor detects the vibration data in real time and transmits it to the PLC controller. The PLC controller then controls the power supply of the N-level electromagnet and the S-level electromagnet to change the hardness of the magnetorheological fluid in the water bag.

[0021] S3: The slurry in the ball mill barrel pushes the sliding block to slide in the detection tank. The conductive sheet slides on the resistor plate to change the resistance of the sliding rheostat. The PLC controller obtains the slurry concentration information based on the resistance change.

[0022] S4: When the PLC controller determines that the feeding amount needs to be adjusted based on the slurry concentration information, the opening of the discharge port of the feeder is adjusted through the baffle plate; when the water injection amount needs to be adjusted, the baffle plate is pushed to move, changing the water flow area of ​​the water outlet to achieve water injection amount adjustment;

[0023] S5: During the discharging process of the ball mill barrel, the PLC controller controls the electromagnetic block to be energized in real time according to the discharging situation. The electromagnetic block and the permanent magnet block attract each other, pulling the filter screen to vibrate.

[0024] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0025] 1. Through the slurry detection mechanism, the second lining plate is driven to rotate when the ball mill barrel rotates. The second lining plate is subjected to the resistance of the slurry, which prompts the sliding block to slide in the detection groove, causing the conductive sheet to slide on the resistance plate, and the resistance value of the sliding rheostat formed changes. In the second detection circuit, the electrical parameters such as current and voltage change accordingly. The PLC controller calculates the concentration information of the slurry in the ball mill barrel according to the current size; when the PLC controller determines that the feeding amount needs to be increased or decreased based on the slurry concentration information, it controls the start-up of the second motor through the adjustment circuit, drives the baffle plate to rotate, changes the opening of the discharge port, and realizes precise adjustment of the feeding amount; when the water injection amount needs to be adjusted, the electromagnetic plate is energized, and the permanent magnet plate on the water baffle is magnetically repelled, so that the water baffle moves in the sliding groove, changes the water flow area of ​​the outlet, and thus adjusts the water injection amount.

[0026] 2. The PLC controller sends a power-on command to the electromagnetic block according to the preset time. After the electromagnetic block is energized, it generates magnetism and attracts the permanent magnet block. Under the action of the magnetic force, the electromagnetic block pulls the filter plate to move, causing the filter plate to shake. The material attached to the filter plate falls off during the shaking process, thereby effectively preventing the filter plate from being blocked.

[0027] 3. The buffer mechanism is equipped with a pressure sensor to monitor the vibration generated by the ball mill in real time. When the pressure sensor detects that the vibration increases, the PLC controller sends a power-on command to the N-level electromagnet and the S-level electromagnet, increasing the current to make the magnetorheological fluid in the water bag harder and harder, thereby better suppressing the vibration; when the vibration decreases, the current is reduced to make the magnetorheological fluid softer and softer. At the same time, combined with the elastic buffering characteristics of the rubber sleeve, it has an effective shock-absorbing and buffering effect on the ball mill barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0030] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0031] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing seat of the present invention;

[0032] Figure 4 This is a partial cross-sectional three-dimensional structure diagram of the present invention Figure 1 ;

[0033] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention;

[0034] Figure 6 This is a partial cross-sectional three-dimensional structure diagram of the present invention Figure 2 ;

[0035] Figure 7 For the present invention Figure 6 Enlarged view of part A.

[0036] Figure numerals: 1, fixed frame; 2, placement hole; 3, ball mill barrel; 4, buffer mechanism; 41, placement slot; 42, N-level electromagnet; 43, S-level electromagnet; 44, water bag; 45, rubber sleeve; 5, slurry detection mechanism; 51, detection slot; 52, sliding block; 53, conductive sheet; 54, resistor plate; 55, reset slot; 56, first spring; 58, first lining plate; 59, second lining plate; 6, adaptive adjustment mechanism; 61, arc extension plate; 62, fixed plate; 63, second motor; 64, rotating shaft ;65. Blocking plate;66. Connecting plate;67. Water inlet ring;68. Water pump;69. Drain pipe;610. Water outlet;611. Sliding groove;612. Water baffle;613. Second spring;614. Electromagnetic plate;615. Permanent magnet plate;7. Fixed seat;8. L-shaped support seat;9. First motor;10. Small gear;11. Large gear;12. Feed port;13. Unloader;14. Discharge ring;15. Feed pump;16. Filter screen;17. Third spring;18. Electromagnetic block;19. Permanent magnet block. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] The present invention will be further described below with reference to the embodiments.

[0039] Example: Refer to Figures 1 to 7 , a wet limestone ball mill for desulfurization with a buffering effect, comprising:

[0040] Two fixed frames 1, each of which has a placement hole 2 at its center, and a ball mill barrel 3 is connected to the inner walls of the two placement holes 2 so as to rotate together;

[0041] The bottom ends of the two fixed frames 1 are both sleeved with fixed seats 7, the outer wall of one of the fixed seats 7 is fixedly connected to an L-shaped support seat 8, the top of the L-shaped support seat 8 is fixedly connected to a first motor 9, the output end of the first motor 9 is fixedly connected to a small gear 10, the outer wall of the ball mill barrel 3 is fixedly sleeved with a large gear 11, the large gear 11 is meshed with the small gear 10, the end close to the large gear 11 is the feed port 12, and a discharge machine 13 is provided at the feed port 12. The outer wall of the ball mill barrel 3 is rotatably sleeved with a discharge ring 14, and a plurality of discharge ports are opened between the ball mill barrel 3 and the discharge ring 14. The outer wall of one of the fixed seats 7 is fixedly connected to a suction pump 15, and the suction end of the suction pump 15 is fixedly connected to the discharge ring 14, and the interior of the ball mill barrel 3 is filled with a large number of steel balls.

[0042] The buffer mechanism 4 is used to perform shock absorption and buffering when the ball mill barrel 3 rotates. The buffer mechanism 4 also includes a vibration detection component for detecting vibration;

[0043] The buffer mechanism 4 includes a placement groove 41 opened on the inner wall on the opposite side of the fixed seat 7. The inner walls of the two placement grooves 41 are respectively fixedly connected with an N-level electromagnet 42 and an S-level electromagnet 43. A water bag 44 is fixedly connected inside the fixed seat 7. The interior of the water bag 44 is filled with magnetorheological fluid. The bottom end of the fixed frame 1 is wrapped by the water bag 44. The outer peripheral wall of the fixed frame 1 and the top of the fixed seat 7 are jointly fixedly connected with a rubber sleeve 45. In the initial state, the N-level electromagnet 42 and the S-level electromagnet 43 are energized, causing the magnetorheological fluid to become a solid-like state, thereby achieving a shock absorption effect.

[0044] The vibration detection component includes a pressure sensor fixedly connected to the inner bottom wall and the side walls of the support base. The electrical signal of the pressure sensor is connected to the PLC controller to form a first detection loop.

[0045] The slurry detection mechanism 5 includes a detection groove 51 formed on the inner wall of the ball mill barrel 3. A sliding block 52 is slidably connected to the inner wall of the detection groove 51. A conductive sheet 53 is fixedly connected to the outer wall of the sliding block 52. A resistor plate 54 is fixedly connected to the inner wall of the detection groove 51 and is in sliding contact with the conductive sheet 53. The resistor plate 54 and the conductive sheet 53 constitute a sliding rheostat.

[0046] The slurry detection mechanism 5 also includes a reset groove 55 opened on the inner wall of the detection groove 51. The inner wall of the reset groove 55 is fixedly connected to a first spring 56. The other end of the first spring 56 is fixedly connected to the sliding block 52. The inner wall of the ball mill barrel 3 is paved with a plurality of first lining plates 58. The top of the sliding block 52 is fixedly connected to a second lining plate 59. There is no first lining plate 58 on the left and right sides of the second lining plate 59. The conductive sheet 53 and the resistor plate 54 are electrically connected to the PLC controller to form a second detection circuit. During the sliding process of the conductive sheet 53 on the resistor plate 54 toward the side away from the reset groove 55, the resistance of the sliding rheostat in the second detection circuit gradually increases.

[0047] Adaptive adjustment mechanism 6, the adaptive adjustment mechanism 6 is used to adaptively adjust the feed amount and water injection amount according to the slurry detection mechanism 5;

[0048] The adaptive adjustment mechanism 6 includes an arc-shaped extension plate 61 fixedly connected to the outer wall of the blanking machine 13, the other end of the arc-shaped extension plate 61 is fixedly connected to a fixed plate 62, the outer wall of the fixed plate 62 is fixedly connected to a second motor 63, the output end of the second motor 63 is fixedly connected to a rotating shaft 64, the outer wall of the rotating shaft 64 is fixedly connected to a blocking plate 65, and the blocking plate 65 is used to block the blanking port, and the blocking plate 65 is in rotational contact with the inner wall of the ball mill barrel 3.

[0049] The outer wall of one of the fixed frames 1 is fixedly connected with a connecting plate 66, and the outer wall of the connecting plate 66 is fixedly connected with a water inlet ring 67. The water inlet ring 67 is in rotational contact with the outer wall of the ball mill barrel 3. The top of the fixed seat 7 is fixedly connected with a water pump 68. The water pumping end of the water pump 68 is connected to the external water tank. The drainage end of the water pump 68 is fixedly connected with a drainage pipe 69. The other end of the drainage pipe 69 is connected to the inside of the water inlet ring 67. The inner wall of the ball mill barrel 3 is provided with two symmetrical water outlets 610, and the water outlets 610 are connected to the inside of the water inlet ring 67. The water outlet A sliding groove 611 is provided on the inner wall of the outlet 610, and a water baffle 612 is slidably connected to the inner wall of the sliding groove 611. The water baffle 612 is used to block the water outlet 610. A second spring 613 is fixedly connected between the sliding groove 611 and the water baffle 612. An electromagnetic plate 614 is fixedly connected to the inner wall of the sliding groove 611, and a permanent magnet plate 615 is fixedly connected to the outer wall of the water baffle 612 facing the electromagnetic plate 614. The electromagnetic plate 614 and the permanent magnet plate 615 magnetically repel each other. The PLC controller is electrically connected to the electromagnetic plate 614 and the second motor 63 to form an adjustment loop.

[0050] A filter screen plate 16 is slidably connected to the outer wall of the first lining plate 58 near the discharge end, and a plurality of third springs 17 are fixedly connected between the filter screen plate 16 and the inner wall of the ball mill barrel 3. A plurality of electromagnetic blocks 18 are fixedly connected to the outer wall of the filter screen plate 16 facing the third springs 17, and a plurality of permanent magnet blocks 19 opposite to the electromagnetic blocks 18 are fixedly connected to the inner wall of the ball mill barrel 3. The electromagnetic blocks 18 and the permanent magnet blocks 19 are magnetically attracted to each other, and the PLC controller is electrically connected to the electromagnetic block 18 to form an anti-blocking circuit.

[0051] The working principle of the present invention is as follows:

[0052] During the startup phase of the ball mill, the first motor 9 outputs power to drive the pinion 10 to rotate. The pinion 10 and the large gear 11 mesh with each other, transmitting power to the ball mill barrel 3, causing it to start rotating. Limestone and water enter the ball mill barrel 3 from the feed port 12 via the discharger 13. During the rotation of the ball mill barrel 3, a large number of steel balls in the barrel rely on their own gravity and centrifugal force to grind the materials, thereby achieving material crushing and mixing.

[0053] The ball mill barrel 3 will generate vibration during the rotation process. The vibration detection component in the buffer mechanism 4 plays a key role. The pressure sensor in the fixed seat 7 monitors the vibration generated by the ball mill in real time. When the pressure on the pressure sensor increases, the vibration increases. When the pressure on the pressure sensor decreases, the vibration decreases. The pressure sensor then transmits the detected vibration data to the PLC controller in the form of an electrical signal, and then the PLC controller issues a power-on command to the N-level electromagnet 42 and the S-level electromagnet 43. Under normal circumstances, when the vibration increases, the current is increased to make the magnetorheological fluid harder to better suppress the vibration. On the contrary, when the vibration decreases, the current needs to be reduced to make the magnetorheological fluid softer.

[0054] (The stiffness and damping properties of the MR fluid are related to the strength of the magnetic field generated by the electromagnet. The greater the current, the stronger the magnetic field. The magnetic particles inside the MR fluid will form a chain structure under the action of the magnetic field, increasing its stiffness and damping, making it harder and more able to resist vibration and impact. Conversely, reducing the current will reduce the magnetic field strength, reducing the orderliness of the MR fluid's internal structure, increasing the fluidity of the fluid, making it softer, and reducing the damping force).

[0055] Since the bottom end of the fixed frame 1 is wrapped by the water bag 44, and the outer peripheral wall of the fixed frame 1 is connected to the top of the fixed seat 7 through the rubber sleeve 45, the change in the viscosity of the magnetorheological fluid in the water bag 44, combined with the elastic buffering characteristics of the rubber sleeve 45, together play an effective shock-absorbing and buffering role on the ball mill barrel 3.

[0056] During the rotation of the ball mill barrel 3, the ball mill barrel 3 will drive the second lining plate 59 to rotate synchronously. However, after the second lining plate 59 contacts the slurry in the ball mill barrel 3, the second lining plate 59 will be subjected to the resistance of the slurry, prompting the sliding block 52 to slide in the detection groove 51. The conductive sheet 53 fixedly connected to the outer wall of the sliding block 52 slides on the resistor plate 54. The resistance value of the sliding rheostat composed of the conductive sheet 53 and the resistor plate 54 changes. In the second detection circuit, the change in resistance value will cause corresponding changes in electrical parameters such as current and voltage in the circuit. When the slurry concentration is high, the resistance to the second lining plate 59 will increase. Therefore, the second lining plate 59 moves a longer distance toward the side away from the rotation direction. Therefore, the current passing through the sliding rheostat increases, and conversely, the current passing through the sliding rheostat decreases. According to the current size, the PLC controller calculates the concentration information of the slurry in the ball mill barrel 3.

[0057] During the sliding process of the sliding block 52, the first spring 56 in the reset groove 55 plays a reset role. When the thrust of the slurry on the sliding block 52 decreases, the first spring 56 pushes the sliding block 52 to reset, ensuring that the slurry detection mechanism 5 can continuously and stably monitor the slurry concentration. Since the second lining plate 59 will cause the current passing through the sliding rheostat to change after entering the slurry and before coming out of the slurry, the slurry amount can be known by the start time and end time of the current change.

[0058] The slurry concentration is too high: When the slurry concentration is too high, the fluidity becomes poor, which will hinder the movement of the grinding media (such as steel balls) in the ball mill. The steel balls cannot rise and fall smoothly when the cylinder rotates, but squeeze and collide with each other, thereby increasing vibration.

[0059] Too much slurry: If there is too much slurry in the ball mill, the buffer layer between the grinding medium and the material will be too thick, the effective grinding effect of the steel balls will be weakened, and the movement of the material in the cylinder will become unstable, which is easy to cause vibration.

[0060] Slurry concentration is too low: A low slurry concentration means that there is too much water and the material is over-diluted. At this time, the movement resistance of the grinding media in the water is reduced, and the collision energy between the steel balls and between the steel balls and the cylinder is absorbed by the water. The collision intensity is weakened, thereby reducing vibration.

[0061] Too little slurry: There is insufficient material in the ball mill, the grinding medium does not have enough material to grind, the idling phenomenon of the steel balls in the cylinder increases, the collision frequency and intensity are reduced, resulting in reduced vibration.

[0062] Therefore, after the PLC controller detects that the vibration increases or decreases, the slurry detection mechanism 5 further detects the slurry condition, and adaptively adjusts the feeding amount and water injection amount of the ball mill according to the slurry concentration and slurry amount.

[0063] When the PLC controller determines that the feeding amount needs to be increased based on the slurry concentration information, it sends a control signal to the second motor 63 through the adjustment circuit. The second motor 63 starts and drives the rotating shaft 64 to rotate. The blocking plate 65 fixedly connected to the rotating shaft 64 rotates accordingly. The blocking plate 65 increases the opening of the feeding port by changing its relative position with the feeding port of the feeder 13, so that more limestone and water can enter the ball mill barrel 3; conversely, when the feeding amount needs to be reduced, the blocking plate 65 rotates to reduce the opening of the feeding port, thereby realizing precise adjustment of the feeding amount.

[0064] When the PLC controller determines that the water injection amount needs to be adjusted, the electromagnetic plate 614 is energized through the adjustment circuit. After the electromagnetic plate 614 is energized, a magnetic field is generated, which magnetically repels the permanent magnet plate 615 on the water baffle 612. Under the action of the repulsive force, the water baffle 612 overcomes the elastic force of the second spring 613 and moves in the sliding groove 611, changing the water flow area of ​​the water outlet 610. When the water flow area increases, the water injection amount increases; when the water flow area decreases, the water injection amount decreases, thereby achieving precise adjustment of the water injection amount in the ball mill barrel 3 to ensure that the slurry concentration is maintained within an appropriate range;

[0065] During the discharge process of ball mill barrel 3, an anti-blocking circuit comes into play to prevent clogging of filter plate 16, which could affect discharge efficiency. The PLC controller issues a power-on command to electromagnetic block 18 via the anti-blocking circuit based on a preset time (both the power-on and power-off durations are pre-set). Once energized, electromagnetic block 18 generates magnetism, attracting permanent magnet 19. Under this magnetic force, electromagnetic block 18 pulls filter plate 16 to move. Then, electromagnetic block 18 is de-energized, causing filter plate 16 to vibrate due to the elastic potential of third spring 17. This causes material adhering to filter plate 16 to fall off during the vibration, effectively preventing clogging of filter plate 16 and ensuring smooth discharge from the ball mill.

[0066] The processed slurry will enter the discharge ring 14 through the discharge port, and then the pumping pump 15 will be started to extract the processed slurry in the discharge ring 14 and discharge it to an external collection device.

[0067] How to use the wet limestone ball mill for desulfurization with buffering effect:

[0068] S1: Start the first motor 9 to drive the ball mill barrel 3 to rotate, and add limestone and water into the ball mill barrel 3 from the feed port 12 through the feeder 13. The steel balls in the ball mill barrel 3 grind the materials;

[0069] S2: During the rotation of the ball mill barrel 3, the pressure sensor detects the vibration data in real time and transmits it to the PLC controller, which then controls the N-level electromagnet and the S-level electromagnet to be energized to change the hardness of the magnetorheological fluid in the water bag 44;

[0070] S3: The slurry in the ball mill barrel 3 pushes the sliding block 52 to slide in the detection tank 51. The conductive sheet 53 slides on the resistance plate 54 to change the resistance of the sliding rheostat. The PLC controller obtains the slurry concentration information based on the resistance change.

[0071] S4: When the PLC controller determines that the feeding amount needs to be adjusted based on the slurry concentration information, the opening of the discharge port of the discharge machine 13 is adjusted through the blocking plate 65; when the water injection amount needs to be adjusted, the water baffle 612 is pushed to move, changing the water flow area of ​​the water outlet 610 to achieve water injection adjustment;

[0072] S5: During the discharging process of the ball mill barrel 3, the PLC controller controls the electromagnetic block 18 to be energized in real time according to the discharging situation. The electromagnetic block 18 and the permanent magnet block 19 attract each other, pulling the filter plate 16 to vibrate.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A wet limestone ball mill for desulfurization with a buffering effect, characterized in that: include: Two fixed frames (1), each having a placement hole (2) at its center, the inner walls of the two placement holes (2) being connected to a ball mill barrel (3) for rotation, and the bottom ends of the two fixed frames (1) being sleeved with a fixing seat (7); A buffer mechanism (4), the buffer mechanism (4) is used for performing a vibration damping and buffering process on the ball mill barrel (3) during rotation, the buffer mechanism (4) further comprising a vibration detection component for detecting vibration; A slurry detection mechanism (5), the slurry detection mechanism (5) comprising a detection groove (51) provided on the inner peripheral wall of the ball mill barrel (3), a sliding block (52) being slidably connected to the inner wall of the detection groove (51), a conductive sheet (53) being fixedly connected to the outer wall of the sliding block (52), a resistor plate (54) being fixedly connected to the inner wall of the detection groove (51) and being in sliding contact with the conductive sheet (53), the resistor plate (54) and the conductive sheet (53) forming a sliding rheostat; The slurry detection mechanism (5) further includes a reset groove (55) provided on the inner wall of the detection groove (51), a first spring (56) being fixedly connected to the inner wall of the reset groove (55), the other end of the first spring (56) being fixedly connected to the sliding block (52), a plurality of first lining plates (58) being laid on the inner wall of the ball mill barrel (3), a second lining plate (59) being fixedly connected to the top end of the sliding block (52), and no first lining plates (58) being provided on the left and right sides of the second lining plate (59), the conductive sheet (53) and the resistor plate (54) being electrically connected to the PLC controller to form a second detection circuit, and during the sliding process of the conductive sheet (53) on the resistor plate (54) toward the side away from the reset groove (55), the resistance of the sliding rheostat in the second detection circuit gradually increases; An adaptive adjustment mechanism (6), the adaptive adjustment mechanism (6) is used to adaptively adjust the feed amount and the water injection amount according to the slurry detection mechanism (5); The outer wall of one of the fixed frames (1) is fixedly connected to a connecting plate (66), the outer wall of the connecting plate (66) is fixedly connected to a water inlet ring (67), the water inlet ring (67) is in rotational contact with the outer wall of the ball mill barrel (3), the top of the fixed seat (7) is fixedly connected to a water pump (68), the water pumping end of the water pump (68) is connected to an external water tank, the drainage end of the water pump (68) is fixedly connected to a drainage pipe (69), the other end of the drainage pipe (69) is connected to the inside of the water inlet ring (67), the inner wall of the ball mill barrel (3) is provided with two symmetrical water outlets (610), and the water outlets (610) are connected to the inside of the water inlet ring (67), the outlets (610) are connected to the inside of the water inlet ring (67), and the outlets (610) are connected to the inside of the water inlet ring (67). A sliding groove (611) is provided on the inner wall of the water outlet (610); a water baffle (612) is slidably connected to the inner wall of the sliding groove (611); the water baffle (612) is used to block the water outlet (610); a second spring (613) is fixedly connected between the sliding groove (611) and the water baffle (612); an electromagnetic plate (614) is fixedly connected to the inner wall of the sliding groove (611); a permanent magnet plate (615) is fixedly connected to the outer wall of the water baffle (612) facing the electromagnetic plate (614); the electromagnetic plate (614) and the permanent magnet plate (615) are magnetically repelled from each other; the PLC controller is electrically connected to the electromagnetic plate (614) and the second motor (63) to form an adjustment loop; The outer wall of the first lining plate (58) near the discharge end is slidably connected to a filter plate (16), a plurality of third springs (17) are fixedly connected between the filter plate (16) and the inner wall of the ball mill barrel (3), a plurality of electromagnetic blocks (18) are fixedly connected to the outer wall of the filter plate (16) facing the third springs (17), a plurality of permanent magnet blocks (19) opposite to the electromagnetic blocks (18) are fixedly connected to the inner wall of the ball mill barrel (3), the electromagnetic blocks (18) and the permanent magnet blocks (19) are magnetically attracted to each other, and the PLC controller is electrically connected to the electromagnetic blocks (18) to form an anti-blocking circuit.

2. The wet limestone ball mill for desulfurization with a buffering effect according to claim 1, characterized in that: The outer wall of one of the fixed seats (7) is fixedly connected to an L-shaped support seat (8), the top of the L-shaped support seat (8) is fixedly connected to a first motor (9), the output end of the first motor (9) is fixedly connected to a small gear (10), the outer wall of the ball mill barrel (3) is fixedly sleeved with a large gear (11), the large gear (11) is meshed with the small gear (10), one end close to the large gear (11) is a feed port (12), a feeder (13) is provided at the feed port (12), the outer wall of the ball mill barrel (3) is rotatably sleeved with a discharge ring (14), a plurality of discharge ports are opened between the ball mill barrel (3) and the discharge ring (14), the outer wall of one of the fixed seats (7) is fixedly connected to a pumping pump (15), the pumping end of the pumping pump (15) is fixedly connected to the discharge ring (14), and the interior of the ball mill barrel (3) is filled with a large number of steel balls.

3. The wet limestone ball mill for desulfurization with a buffering effect according to claim 2, characterized in that: The buffer mechanism (4) includes a placement groove (41) opened on the inner wall of the opposite side of the fixing seat (7), and the inner walls of the two placement grooves (41) are fixedly connected to an N-level electromagnet (42) and an S-level electromagnet (43), respectively. A water bag (44) is fixedly connected inside the fixing seat (7), and the interior of the water bag (44) is filled with magnetorheological fluid. The bottom end of the fixing frame (1) is wrapped by the water bag (44), and the outer peripheral wall of the fixing frame (1) and the top end of the fixing seat (7) are fixedly connected to a rubber sleeve (45).

4. The wet limestone ball mill for desulfurization with a buffering effect according to claim 3, characterized in that: The vibration detection component includes a pressure sensor fixedly connected to the inner bottom wall and the side walls of the support base. The electrical signal of the pressure sensor is connected to the PLC controller to form a first detection loop.

5. The wet limestone ball mill for desulfurization with buffering effect according to claim 4, characterized in that: The adaptive adjustment mechanism (6) includes an arc-shaped extension plate (61) fixedly connected to the outer wall of the blanking machine (13), the other end of the arc-shaped extension plate (61) is fixedly connected to a fixed plate (62), the outer wall of the fixed plate (62) is fixedly connected to a second motor (63), the output end of the second motor (63) is fixedly connected to a rotating shaft (64), the outer wall of the rotating shaft (64) is fixedly connected to a blocking plate (65), and the blocking plate (65) is used to block the blanking port, and the blocking plate (65) is in rotational contact with the inner wall of the ball mill barrel (3).

6. A method for using a wet limestone ball mill for desulfurization with a buffering effect, applied to the wet limestone ball mill for desulfurization with a buffering effect according to claim 5, characterized in that: The following steps are involved: S1: Start the first motor (9) to drive the ball mill barrel (3) to rotate, add limestone and water into the ball mill barrel (3) from the feed port (12) through the feeder (13), and the steel balls in the ball mill barrel (3) grind the materials; S2: During the rotation of the ball mill barrel (3), the pressure sensor detects the vibration data in real time and transmits it to the PLC controller, which then controls the N-level electromagnet and the S-level electromagnet to be energized to change the hardness of the magnetorheological fluid in the water bag (44); S3: The slurry in the ball mill barrel (3) pushes the sliding block (52) to slide in the detection tank (51), and the conductive sheet (53) slides on the resistance plate (54) to change the resistance of the sliding rheostat. The PLC controller obtains the slurry concentration information according to the resistance change; S4: When the PLC controller determines that the feeding amount needs to be adjusted based on the slurry concentration information, the opening of the discharge port of the discharge machine (13) is adjusted through the blocking plate (65); when the water injection amount needs to be adjusted, the water blocking plate (612) is pushed to move, and the water flow area of ​​the water outlet (610) is changed to achieve water injection amount adjustment; S5: During the discharge process of the ball mill barrel (3), the PLC controller controls the electromagnetic block (18) to be energized in a timely manner according to the discharge situation, and the electromagnetic block (18) and the permanent magnet block (19) attract each other, pulling the filter screen plate (16) to vibrate.

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