Continuous production line feeding device of through-type ball mill

Abstract

The invention relates to the technical field of through-type ball mills, and discloses a continuous production line feeding device of a through-type ball mill, which comprises a storage barrel and a through-type ball mill body, and is characterized in that a conveying channel is arranged between the storage barrel and the through-type ball mill body, and is fixedly communicated with the bottom of the storage barrel; and the conveying channel rotationally communicates with the feeding end of the through-type ball mill body, a transverse shaft rod is rotationally connected into the conveying channel, and a first spiral blade is fixedly connected to the outer portion of the transverse shaft rod. According to the continuous production line feeding device of the through-type ball mill, the adaptability of the feeding link is remarkably improved, the driving torque is monitored in real time through a rotating speed and torque sensor, and through the transverse sliding design of a stepping motor and a first spiral blade and a high-pressure spray head, the intelligent blocking early warning and online self-cleaning and adjusting capacity are achieved; and non-planned shutdown caused by material blockage is reduced, and the operation efficiency of a continuous production line is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of through-feed ball mill technology, specifically to a continuous production line feeding device for a through-feed ball mill. Background Technology

[0002] Currently, in continuous production lines, the feeding device of through-feed ball mills typically adopts a structure where a static pipe is connected to the rotating machine body.

[0003] The feed end of the rotating ball mill needs to be connected to a fixed feed pipe. Simultaneously, a seal must be achieved between the two; the purpose of the static pipe's connection to the rotating mill body is to ensure continuous and closed-loop material transport.

[0004] The specific implementation method is as follows: First, an end cover flange is fixedly installed outside the feeder. The flange is fixed to the end of the ball mill feed auger cylinder with screws, and the flange will rotate together with the cylinder.

[0005] Secondly, a feed pipe is provided, which passes through the mounting hole in the center of the flange. A roller bearing is installed inside the feed pipe, allowing it to rotate relative to the flange. The inner and outer ends of the feed pipe are clamped by end caps, which are equipped with oil seals to achieve a seal.

[0006] During operation, the rear end of the feed pipe is connected to the outlet of a fixed feed pump. The front end of the feed pipe extends into the rotating ball mill cylinder. The material ultimately flows into the dynamic ball mill through the static feed pipe under the pressure of the pump.

[0007] However, the existing device has some shortcomings in actual operation. For materials with high viscosity and high moisture content, they tend to adhere to the static feed inlet and the pipe wall, gradually accumulating. This accumulation leads to a reduction in the flow cross-section, which may eventually cause complete blockage. Furthermore, the structure is a rigid design; once material blockage or foreign object obstruction occurs, the entire production line must be stopped, and the entire feed end cap must be disassembled for cleaning.

[0008] Therefore, we propose a continuous production line feeding device for a through-feed ball mill to address the problems mentioned above. Summary of the Invention

[0009] This invention provides a continuous production line feeding device for a through-feed ball mill, which can solve the problem that the feeding device of the existing through-feed ball mill usually adopts a structure in which a static pipe is connected to the rotating body. For materials with high viscosity and high moisture content, the material is prone to adhere to the static feed pipe opening, causing the material to block the pipe wall.

[0010] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A continuous production line feeding device for a through-feed ball mill includes a storage tank and a through-feed ball mill body. A conveying channel is provided between the storage tank and the through-feed ball mill body. The conveying channel is fixedly connected to the bottom of the storage tank and rotatably connected to the feed end of the through-feed ball mill body. A transverse shaft is rotatably connected inside the conveying channel. A first helical blade is fixedly connected to the outside of the transverse shaft. A stepper motor is installed at the end of the conveying channel away from the through-feed ball mill body. A speed and torque sensor is installed on the shaft of the stepper motor. A feeding base plate is slidably installed at the bottom of the conveying channel. The feeding base plate is adapted to the bottom of the conveying channel to form a circular conveying channel, and the feeding base plate is equivalent to the longitudinal sliding installation at the bottom of the conveying channel; multiple high-pressure nozzles are installed on the upper wall of the conveying channel. A buffer chamber is fixedly connected to the bottom of the conveying channel. The feeding base plate slides with the inner wall of the conveying channel. A damping telescopic rod is fixedly installed at the bottom of the buffer chamber. The upper end of the damping telescopic rod is fixedly connected to the feeding base plate. A buffer spring is installed on the outside of the damping telescopic rod.

[0011] Preferably, the buffer chamber is arranged parallel to the conveying channel and extends to the feed end of the through ball mill body.

[0012] Preferably, a guide groove is fixedly connected to one end of the buffer chamber near the bottom of the storage tank, a stepper motor is slidably connected to the upper part of the guide groove, and a sliding seat is fixedly connected to the bottom of the stepper motor, with the sliding seat slidably connected inside the guide groove.

[0013] Preferably, an electric telescopic rod is fixedly installed inside the guide chute. The electric telescopic rod is arranged parallel to the direction of the conveying channel, and the telescopic end of the electric telescopic rod is fixedly connected to the sliding seat.

[0014] Preferably, a drive device is installed at the end of the through-type ball mill body away from the storage tank, and rotating support seats are provided at both ends of the through-type ball mill body.

[0015] Preferably, the end of the through ball mill body away from the drive device is fixedly connected to a feed pipe, and the guide pipe is coaxially arranged with the feed pipe and extends into the feed pipe.

[0016] Preferably, a sealed bearing is installed between the outer wall of the guide pipe and the inner wall of the feed pipe, and a baffle cover is detachably installed at one end of the feed pipe located outside the sealed bearing. The baffle cover is annular, and the guide pipe passes through the inside of the baffle cover.

[0017] Preferably, a baffle ring is fixedly installed on the inner wall of the feed pipe located inside the sealed bearing, the baffle ring is sleeved outside the guide pipe, and a feed spiral blade is installed on the inner wall of the feed pipe located inside the baffle ring.

[0018] Preferably, a truss is fixedly installed at the upper end of the storage hopper, a servo motor is installed on the truss, a longitudinal shaft is installed on the shaft of the servo motor, the longitudinal shaft coincides with the axis of the storage hopper, a turning blade is provided at the upper part of the longitudinal shaft, and a second spiral blade is provided at the lower part of the longitudinal shaft.

[0019] Preferably, the storage hopper has a conical bottom, and a discharge pipe is fixedly connected to the middle of the conical bottom. The second spiral blade extends from the storage hopper to the bottom of the discharge pipe.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are: I. This invention effectively solves the problem in existing technologies where viscous materials easily adhere and accumulate on the inner wall of the static feed pipe, causing blockages and requiring machine shutdown for disassembly and cleaning. By using spiral blades to actively push materials instead of passive conveying relying solely on pump pressure, the material at the bottom of the storage tank is pushed into the conveying channel by the second spiral blades inside the storage tank. The first spiral blades in the conveying channel rotate under the drive of a stepper motor, continuously conveying the material laterally to the guide pipe. During the conveying process, a speed and torque sensor monitors the torque in real time. If material adhesion causes an increase in flow pressure, the material will push the feeding base plate to compress the buffer spring and slide downward, thereby temporarily expanding the flow cross-section of the conveying channel. The first spiral blades continue to rotate to clear the material. After the pressure decreases, the feeding base plate returns to its original position under the action of the buffer spring. At the same time, the stepper motor can slide laterally under the drive of an electric telescopic rod, driving the first spiral blades to scrape off the material adhering to the inner wall of the channel. Combined with the flushing of the high-pressure nozzle, the channel remains unobstructed, achieving continuous and stable conveying of highly viscous and easily agglomerated materials, and solving the blockage problem.

[0021] II. In the device of this invention, after the material is output through the guide pipe, it falls into the rotating feed pipe. The feed spiral blades inside the feed pipe transport the material to the inside of the through-feed ball mill for grinding. The guide pipe and the feed pipe are sealed with multiple layers of seals, including a sealing bearing, a retaining ring, and a retaining cover, to prevent material leakage. Through this multi-layered sealing connection structure between the guide pipe and the feed pipe, reliable sealing between moving and stationary parts is ensured, guaranteeing the smooth introduction of material into the rotating ball mill. This device significantly improves the adaptability of the feeding process. Real-time monitoring of the drive torque is achieved through a speed and torque sensor. The lateral sliding design of the stepper motor and the first spiral blade, along with the high-pressure nozzle, enables intelligent blockage warning, online self-cleaning, and adjustment capabilities, reducing unplanned downtime caused by material blockage and ensuring the operational efficiency of the continuous production line. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a side cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram at point A; Figure 4 For the present invention Figure 2 A magnified structural diagram at point B.

[0023] The components include: 1. Storage hopper; 2. Conveying channel; 3. Through-type ball mill body; 11. Truss; 12. Servo motor; 13. Longitudinal shaft; 14. Tilting blade; 15. Second spiral blade; 16. Conical bottom; 17. Feed pipe; 22. Guide pipe; 23. Transverse shaft; 24. First spiral blade; 25. Stepper motor; 26. Buffer chamber; 27. Feeding base plate; 28. Damping telescopic rod; 29. ​​Buffer spring; 201. Guide groove; 202. Electric telescopic rod; 203. Sliding seat; 31. Drive device; 32. Rotating support seat; 33. Feed pipe; 34. Sealed bearing; 35. Material retaining ring. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0025] Example 1: Please see Figure 1-4 The present invention provides a technical solution: A continuous production line feeding device for a through-type ball mill includes a storage tank 1 and a through-type ball mill body 3. A conveying channel 2 is provided between the storage tank 1 and the through-type ball mill body 3, and the conveying channel 2 is fixedly connected to the bottom of the storage tank 1. Material from the bottom of storage bin 1 is conveyed to the inside of the through-feed ball mill body 3 via conveying channel 2 for grinding. Conveying channel 2 is rotatably connected to the feed end of the through-feed ball mill body 3. A transverse shaft 23 is rotatably connected inside the conveying channel 2, and a first spiral blade 24 is fixedly connected to the outside of the transverse shaft 23. A stepper motor 25 is installed at the end of the conveying channel 2 away from the through-feed ball mill body 3, and a speed and torque sensor is installed on the shaft of the stepper motor 25. The stepper motor 25 drives the transverse shaft 23 to rotate, and the transverse shaft 23 drives the first spiral blade 24 to rotate. The material from the bottom of the storage bin 1, which enters the conveying channel 2, is laterally conveyed to the feed end of the through-feed ball mill body 3. The material is then conveyed through the rotation of the first spiral blade 24. The conveying stability is strong, and the possibility of material blockage is low. The speed and torque are detected by the speed and torque sensors, which facilitates the control of the feeding speed. When the material blocks the rotation of the first spiral blade 24, the speed and torque sensors detect an increase in torque, thereby stopping the drive of the stepper motor 25. This timely maintenance prevents the material from blocking the conveying channel 2 and avoids the first spiral blade 24 from getting stuck when rotating.

[0026] A feeding base plate 27 is slidably provided at the bottom of the conveying channel 2. The feeding base plate 27 is adapted to the bottom of the conveying channel 2 to form a circular conveying channel 2, and the feeding base plate 27 is equivalent to the longitudinal sliding arrangement at the bottom of the conveying channel 2. The feeding base plate 27 is an arc-shaped plate set at the bottom of the conveying channel 2, and the inner arc of the feeding base plate 27 is the same as the arc of the inner wall of the conveying channel 2; the bottom of the conveying channel 2 is provided with a material buffer port that matches the feeding base plate 27; A buffer chamber 26 is fixedly connected to the bottom of the conveying channel 2. The feeding base plate 27 is slidably fitted with the inner wall of the conveying channel 2. A damping telescopic rod 28 is fixedly installed at the bottom of the buffer chamber 26. The upper end of the damping telescopic rod 28 is fixedly connected to the feeding base plate 27. A buffer spring 29 is installed on the outside of the damping telescopic rod 28.

[0027] With the cooperation of the damping telescopic rod 28 and the buffer spring 29, the feeding base plate 27 is engaged with the material buffer port during normal operation, ensuring smooth material conveying. When the material inside the conveying channel 2 is blocked, affecting normal material conveying, the material pressure inside the conveying channel 2 increases due to the blockage, pushing the feeding base plate 27 to slide into the buffer chamber 26, thereby expanding the inner diameter of the conveying channel 2. The first spiral blade 24 continues to rotate, pushing the material to the feed end of the through-type ball mill body 3, avoiding the problem of the first spiral blade 24 getting stuck and the blockage inside the conveying channel 2. When the blockage is relieved, the pressure inside the conveying channel 2 decreases, and the damping telescopic rod 28 and the buffer spring 29 push the feeding base plate 27 to reset, maintaining the original conveying volume of the conveying channel 2. Multiple high-pressure nozzles are installed on the upper wall of the conveying channel 2; the high-pressure nozzles are used to flush the inside of the conveying channel 2 under high pressure.

[0028] In some specific embodiments, the buffer chamber 26 is arranged parallel to the conveying channel 2 and extends to the feed end of the through ball mill body 3. Through the above scheme, the buffer chamber 26 can buffer the bottom of the original conveying channel 2 as a whole, expand the buffer area, and effectively solve the problem of blockage.

[0029] In some specific embodiments, the buffer chamber 26 is fixedly connected to a guide groove 201 at one end near the bottom of the storage tank 1. The stepper motor 25 is slidably connected to the upper part of the guide groove 201. A sliding seat 203 is fixedly connected to the bottom of the stepper motor 25. The sliding seat 203 is slidably connected inside the guide groove 201. The bottom of the stepper motor 25 is supported by the guide groove 201. The sliding seat 203 is slidably connected inside the guide groove 201, thereby keeping the stepper motor 25 stable when sliding.

[0030] In some specific embodiments, an electric telescopic rod 202 is fixedly installed inside the guide chute 201. The electric telescopic rod 202 is arranged parallel to the direction of the conveying channel 2. The telescopic end of the electric telescopic rod 202 is fixedly connected to the sliding seat 203. The electric telescopic rod 202 pushes the sliding seat 203, which drives the stepper motor 25 to slide laterally. The stepper motor 25 drives the transverse shaft 23 and the first spiral blade 24 to slide laterally. The transverse sliding can also clean the inside of the conveying channel 2. The first spiral blade 24 scrapes off the sticky material on the inner wall of the conveying channel 2. At the same time, the first spiral blade 24 moves laterally and works with the high-pressure nozzle to rinse it.

[0031] Example 2: Please see Figure 1-4 Furthermore, in conjunction with Embodiment 1, it is further found that a drive device 31 is installed at the end of the through ball mill body 3 away from the storage tank 1, and rotating support seats 32 are provided at both ends of the through ball mill body 3. The rotating support seats 32 on both sides provide rotational support for both ends of the through ball mill body 3, and the drive device 31 drives the through ball mill body 3 to rotate.

[0032] In some specific embodiments, the end of the through ball mill body 3 away from the drive device 31 is fixedly connected to the feed pipe 33. The guide pipe 22 is coaxially arranged with the feed pipe 33 and extends into the inside of the feed pipe 33. By coaxially arranging the guide pipe 22 and the feed pipe 33, the passability of the material is ensured and friction between the guide pipe 22 and the feed pipe 33 is avoided.

[0033] In some specific embodiments, a sealed bearing 34 is installed between the outer wall of the guide pipe 22 and the inner wall of the feed pipe 33. A baffle cover is detachably installed at one end of the feed pipe 33 outside the sealed bearing 34. The baffle cover is annular, and the guide pipe 22 passes through the inside of the baffle cover. The sealed bearing 34 ensures smooth rotation between the guide pipe 22 and the feed pipe 33 and avoids friction. The baffle cover is located outside the sealed bearing 34 to prevent the sealed bearing 34 from dislodging and to prevent material from leaking outward.

[0034] In some specific embodiments, a baffle ring 35 is fixedly installed on the inner wall of the feed pipe 33 located inside the sealing bearing 34. The baffle ring 35 is sleeved on the outside of the guide pipe 22. A feed spiral blade is installed on the inner wall of the feed pipe 33 located inside the baffle ring 35. The baffle ring 35 prevents the material at the outlet of the guide pipe 22 from flowing outward. The material output through the guide pipe 22 falls into the feed pipe 33. The feed spiral blade located inside the baffle ring 35 of the feed pipe 33 rotates with the through ball mill body 3, conveying the material into the cavity of the through ball mill body 3 for grinding, preventing material leakage. The baffle ring 35, the sealing bearing 34, and the baffle cover achieve a three-layer seal for the material, preventing material leakage at the connection between the feed pipe 33 and the guide pipe 22.

[0035] Example 2: Please see Figure 1-4 Furthermore, in conjunction with Embodiment 1, a truss 11 is fixedly installed at the upper end of the storage bin 1. A servo motor 12 is installed on the truss 11, and a longitudinal shaft 13 is installed on the rotating shaft of the servo motor 12. The longitudinal shaft 13 coincides with the axis of the storage bin 1. A turning blade 14 is provided on the upper part of the longitudinal shaft 13, and a second spiral blade 15 is provided on the lower part of the longitudinal shaft 13. The servo motor 12 is supported by the truss 11, and the longitudinal shaft 13 is driven to rotate by the servo motor 12. The turning blade 14 is driven to rotate by the longitudinal shaft 13. The turning blade 14 turns over the material inside the storage bin 1 to prevent it from accumulating and clumping, which would affect the conveying. The material is pushed out from the bottom of the storage bin 1 by the rotation of the second spiral blade 15.

[0036] In some specific embodiments, the bottom of the storage hopper 1 is provided with a conical bottom 16, and the middle of the conical bottom 16 is fixedly connected to the discharge pipe 17. The second spiral blade 15 extends from the storage hopper 1 to the bottom of the discharge pipe 17. The material inside the storage hopper 1 flows to the discharge pipe 17 through the conical bottom 16, which facilitates the second spiral blade 15 to push the material from the discharge pipe 17 into the conveying channel 2.

[0037] The working principle of the feeding device of the continuous production line of the through-feed ball mill is as follows: The material at the bottom of the storage tank 1 enters the conveying channel 2 under the push of the second spiral blade 15 inside the storage tank 1. The first spiral blade 24 inside the conveying channel 2 rotates under the drive of the stepper motor 25, continuously conveying the material laterally to the guide pipe 22. During the conveying process, the speed and torque sensor monitors the torque in real time. If the material adheres and causes the flow pressure to increase, the material will push the feeding bottom plate 27 to compress the buffer spring 29 and slide downward, thereby temporarily expanding the flow cross section of the conveying channel 2. The first spiral blade 24 continues to rotate to clear the material. After the pressure decreases, the feeding base plate 27 resets under the action of the buffer spring 29; at the same time, the stepper motor 25 can slide laterally under the drive of the electric telescopic rod 202, driving the first spiral blade 24 to scrape off the material adhering to the inner wall of the channel, and keeping the channel unobstructed in conjunction with the flushing of the high-pressure nozzle; after the material is output through the guide pipe 22, it falls into the rotating feed pipe 33, and the feed spiral blades in the feed pipe 33 transport the material to the inside of the through ball mill body 3 for grinding. The guide pipe 22 and the feed pipe 33 are sealed in multiple layers through the sealing bearing 34, the baffle ring 35 and the baffle cover to prevent material leakage.

[0038] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A continuous production line feed device for a through-feed ball mill comprising a storage hopper (1) and a through-feed ball mill body (3), characterized in that: The conveying channel (2) is fixedly communicated with the bottom of the storage barrel (1) and rotationally communicated with the feeding end of the through-type ball mill body (3), a transverse shaft (23) is rotationally connected in the conveying channel (2), and the outer portion of the transverse shaft (23) is fixedly connected with a first spiral blade (24); one end of the conveying channel (2) away from the through-type ball mill body (3) is provided with a stepping motor (25), and a rotation speed and torque sensor is installed on the rotating shaft of the stepping motor (25). A feeding bottom plate (27) is slidably arranged at the bottom of the conveying channel (2) and is adapted to the bottom of the conveying channel (2) to form a circular conveying channel (2), and the feeding bottom plate (27) is longitudinally slidably arranged at the bottom of the conveying channel (2); a plurality of high-pressure nozzles are arranged on the upper wall of the conveying channel (2). The bottom of the conveying channel (2) is fixedly communicated with a buffer chamber (26), the feeding bottom plate (27) is slidably matched with the inner wall of the conveying channel (2), the bottom of the buffer chamber (26) is fixedly installed with a damping telescopic rod (28), the upper end of the damping telescopic rod (28) is fixedly connected with the feeding bottom plate (27), and the outer portion of the damping telescopic rod (28) is installed with a buffer spring (29).

2. A continuous in-feed device for a through-feed ball mill according to claim 1, characterized in that: The buffer chamber (26) is parallel to the conveying channel (2) and extends to the feeding end of the through-type ball mill body (3).

3. A continuous in-feed device for a through-feed ball mill according to claim 2, characterized in that: One end of the buffer chamber (26) close to the bottom of the storage barrel (1) is fixedly connected with a guide sliding groove (201), the stepping motor (25) is slidably connected to the upper portion of the guide sliding groove (201), the bottom of the stepping motor (25) is fixedly connected with a sliding seat (203), and the sliding seat (203) is slidably connected to the inner portion of the guide sliding groove (201).

4. A continuous in-feed device for a through-feed ball mill according to claim 3, characterized in that: The inner portion of the guide sliding groove (201) is fixedly installed with an electric telescopic rod (202), the electric telescopic rod (202) is arranged in parallel to the direction of the conveying channel (2), and the telescopic end of the electric telescopic rod (202) is fixedly connected with the sliding seat (203).

5. A continuous in-feed device for a through-feed ball mill according to claim 4, characterized in that: One end of the through-type ball mill body (3) away from the storage barrel (1) is installed with a driving device (31), and rotating support seats (32) are arranged at both ends of the through-type ball mill body (3).

6. A continuous in-feed device for a through-feed ball mill according to claim 1, characterized in that: One end of the through-type ball mill body (3) away from the driving device (31) is fixedly communicated with a feeding pipe (33), the guide pipe (22) is coaxially arranged with the feeding pipe (33), and the guide pipe (22) extends into the inner portion of the feeding pipe (33).

7. A continuous in-feed device for a through-feed ball mill according to claim 6, characterized in that: A sealing bearing (34) is installed between the outer wall of the guide pipe (22) and the inner wall of the feeding pipe (33), a material blocking cover is detachably installed on one end of the feeding pipe (33) on the outer side of the sealing bearing (34), the material blocking cover is annular, and the guide pipe (22) penetrates through the inner portion of the material blocking cover.

8. A continuous in-feed device for a through-feed ball mill according to claim 7, characterized in that: A material blocking ring (35) is fixedly arranged on the inner wall of the feeding pipe (33) on the inner side of the sealing bearing (34), the material blocking ring (35) is sleeved on the outer portion of the guide pipe (22), and a feeding spiral blade is arranged on the inner wall of the feeding pipe (33) on the inner side of the material blocking ring (35).

9. A continuous in-feed device for a through-feed ball mill according to claim 1, characterized in that: The truss (11) is fixedly installed on the upper end of the storage barrel (1), the servo motor (12) is installed on the truss (11), the rotating shaft of the servo motor (12) is installed with the longitudinal shaft (13), the longitudinal shaft (13) coincides with the axis of the storage barrel (1), the longitudinal shaft (13) is provided with the turnover blade (14) on the upper portion, and the longitudinal shaft (13) is provided with the second spiral blade (15) on the lower portion.

10. A continuous in-feed device for a through-feed ball mill according to claim 9, characterized in that: The conical barrel bottom (16) is arranged at the bottom of the storage barrel (1), the conical barrel bottom (16) is fixedly communicated with the discharging pipe (17) in the middle portion, and the second spiral blade (15) extends from the storage barrel (1) to the bottom of the discharging pipe (17).

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