Energy-saving ball mill for zinc-containing material treatment based on zinc sulfate heptahydrate production

Abstract

The invention relates to the technical field of ore sand processing and production, and discloses an energy-saving ball mill for zinc-containing material treatment based on zinc sulfate heptahydrate production, the energy-saving ball mill comprises a base, a barrel and a driving unit, a transfer piece is mounted in the middle of the inner wall of the barrel, a rotary barrel is arranged in a rough grinding area, and a plurality of partition plates are jointly connected between the outer wall of the rotary barrel and the inner wall of the barrel; and a plurality of discharging mechanisms are annularly arranged in the rotary drum at equal intervals, each discharging mechanism comprises a fixing table connected with the inner wall of the rotary drum and a jacking assembly arranged in the fixing table, and each discharging mechanism further comprises a plurality of positioning plates. The material ejecting assembly ejects materials and the grinding balls between the fixed table and the rotary drum, so that the grinding balls are arranged on the positioning plate at equal intervals and can move to a high position to fall down along with the positioning plate, impact force is enhanced, invalid collision is avoided, the grinding efficiency is improved, energy is saved, meanwhile, small materials are screened out in advance through the material screening holes, buffering is prevented from being provided for large materials, and the service life of the grinding balls is prolonged. And the grinding efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of ore sand material processing and production, in particular to an energy-saving ball mill for processing zinc-containing materials produced based on zinc sulfate heptahydrate. Background Art

[0002] Zinc sulfate heptahydrate is an important inorganic compound, appearing as a white crystalline powder. It is widely used in agriculture, industry, medicine, and other fields. Its preparation typically uses zinc-containing materials such as zinc roasted sand, zinc ash, and zinc ore as raw materials. The bulk material is first processed into a powder using a ball mill. After a series of treatments, the product is finally obtained through evaporation and crystallization.

[0003] The working principle of the ball mill is based on the centrifugal force generated by the rotating cylinder. When the cylinder rotates, the grinding balls in the cylinder adhere to the cylinder and perform circular motion under the action of centrifugal force. As the height continues to rise, the dynamic balance between gravity and centrifugal force is broken, and the grinding balls will fall from a height, relying on the powerful impact force and grinding force to crush the material into powder.

[0004] However, during actual processing, the presence of bulk material can interfere with the normal motion of the grinding balls, causing them to fall prematurely. This is primarily because, as the bulk material rolls or moves within the ball mill barrel, it directly collides and rubs against the grinding balls. As the grinding balls ascend, if they encounter the obstruction of the bulk material, their upward motion, which relies on centrifugal force, is hindered. This obstruction changes the direction and magnitude of the force acting on the grinding balls, making it difficult for them to continue ascending to the desired height. Furthermore, due to the relatively large mass and volume of the bulk material, collisions with the grinding balls consume some of their kinetic energy, preventing them from reaching the desired height under the action of centrifugal force and forcing them to fall prematurely. This reduces the height at which the grinding balls fall, accumulating insufficient kinetic energy and weakening their impact on the material, significantly reducing the grinding effect and efficiency. In addition, after part of the material is ground into powder first, the powder will accumulate under the bulk material, forming a "cushion pad" effect. When the grinding ball falls and hits the bulk material, the powder will absorb part of the impact force, reducing the actual impact force on the bulk material, further affecting the grinding efficiency of the material. Summary of the Invention

[0005] In view of the problems in the existing technology that the grinding balls fall prematurely and the powder provides a buffer for the bulk material, resulting in reduced grinding efficiency, an energy-saving ball mill for processing zinc-containing materials based on the production of zinc sulfate heptahydrate is proposed.

[0006] The purpose is to partition the cylinder body. The grinding balls in the rough grinding area can be evenly distributed on the positioning plate and can move to the highest point, enabling the grinding balls to have the maximum impact potential energy. At the same time, small pieces of materials are screened out in advance to avoid providing a buffer for large pieces of materials.

[0007] The technical solution of the present invention is an energy-saving ball mill for treating zinc-containing materials based on the production of zinc sulfate heptahydrate, including a base, a cylinder body, and a driving unit. The cylinder body is rotatably installed on the base and is driven by the driving unit. A transfer member is installed in the middle of the inner wall of the cylinder body. The transfer member divides the inside of the cylinder body into a rough grinding area and a fine grinding area. A rotating cylinder is provided in the rough grinding area. A plurality of partition plates are commonly connected between the outer wall of the rotating cylinder and the inner wall of the cylinder body. A plurality of discharging mechanisms are arranged in the rotating cylinder at equal intervals in a circular shape. The inner wall of the fine grinding area is lined with a plurality of lining plates; The discharging mechanism includes a fixed table connected to the inner wall of the rotating cylinder and a top material component arranged in the fixed table. The fixed table is of a cavity structure and is communicated with the rotating cylinder. A plurality of screening holes are opened on one inclined surface of the fixed table. The discharging mechanism further includes a plurality of positioning plates. The positioning plates are arranged between adjacent two fixed tables, and one end of the positioning plate is fixedly connected to the inner wall of the rotating cylinder; The top material component includes a synchronous rod arranged in the fixed table. A plurality of top plates are linearly and equally spacedly connected to the side of the synchronous rod away from the screening holes. The top plates movably penetrate through the fixed table. A counterweight rod is arranged between the rotating cylinder and the cylinder body. Both ends of the counterweight rod are eccentrically connected with connecting rods. The other ends of the connecting rods pass through the rotating cylinder and are rotatably connected to the fixed table, and the connecting rods are used to drive the synchronous rod to rotate.

[0008] Further, the transfer member includes a guiding column in a frustum shape. A plurality of guiding plates are fixedly connected to the outer wall of the arc side of the guiding column at equal intervals in a circular shape. Circular baffles are arranged on both axial sides of the guiding column. The baffles are fixedly connected to the guiding plates and the inner wall of the cylinder body. A plurality of feeding holes are opened at equal intervals in a circular shape at the edge of the baffle on the side of the rough grinding area. A discharging hole is opened in the middle of the baffle on the side of the fine grinding area.

[0009] Further, a plurality of the partition plates are spirally distributed at equal intervals in a circular shape, and one end of the partition plate faces the feeding hole.

[0010] Further, the top plate is in a fan shape and one end of the central angle is rotatably connected to the fixed table. A first support rod is commonly hinged between the end of the connecting rod close to the fixed table and the synchronous rod.

[0011] Further, a plurality of U-shaped positioning grooves are opened at equal intervals on the positioning plate. A plurality of triangular plates are fixedly connected between the positioning plate and the inner wall of the rotating cylinder.

[0012] Furthermore, a flow guide plate is provided between two adjacent U-shaped positioning grooves. The flow guide plate is in the structure of a triangular prism and is fixedly connected to the positioning plate.

[0013] Furthermore, the discharging mechanism further includes a dredging component arranged in the fixed table. The dredging component includes a connecting shaft rotatably connected to the inner wall of the fixed table. A plurality of ejector rods are fixedly connected to the outer wall of the connecting shaft at equal intervals linearly. Driven rods are fixedly connected to both ends of the connecting shaft. A second support rod is jointly hinged between the driven rod and the connecting rod.

[0014] Furthermore, a power storage unit is arranged on the blanking component. The power storage unit includes a sliding sleeve slidably sleeved on the outer wall of the connecting rod. A positioning rod is fixed on the outer wall of the sliding sleeve. A positioning groove adapted to the positioning rod is formed on the rotating cylinder. A limiting block is arranged on one side of the sliding sleeve facing the counterweight rod. The limiting block is in the structure of a trapezoid and is fixedly connected to the counterweight rod.

[0015] Furthermore, an energy-saving heat dissipation module is arranged on the driving unit. The energy-saving heat dissipation module includes a protective cover and fan blades. The protective cover is sleeved outside the motor of the driving unit. The fan blades are installed on the output shaft of the motor.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The blanking component ejects the materials and grinding balls between the fixed table and the rotating cylinder, so that the grinding balls are arranged equidistantly on the positioning plate and can move to a high place with the positioning plate and then fall, enhancing the impact force, avoiding ineffective collisions, improving the grinding efficiency and saving energy. At the same time, the screening holes screen out small pieces of materials in advance to avoid providing buffering for large pieces of materials, thereby further improving the grinding efficiency.

[0017] 2. Through the collaborative operation of the dredging component and the discharging mechanism, the dredging component intermittently dredges the screening holes, avoiding the influence of material blockage on the screening efficiency, ensuring the continuity and stability of the material classification in the rough grinding area, improving the reliability of the overall grinding process, reducing the manual maintenance cost, and enhancing the high efficiency of the equipment operation.

[0018] 3. The power storage unit can enable the counterweight rod to store gravitational potential energy. After the positioning rod disengages from the positioning groove, the potential energy of the counterweight rod is converted into the explosive rotational kinetic energy of the connecting rod, so that the top plate and the ejector rod obtain the peak working intensity, enhancing the blanking and dredging effects. This design improves the mechanical linkage efficiency, realizes the maximum execution force with the minimum energy consumption, optimizes the energy utilization, ensures the high-efficiency and stable operation of the discharging mechanism, and reduces the energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the cylinder body of the present invention; Figure 3 Schematic diagram of the split structure of the transfer part of the present invention; Figure 4 Schematic diagram of the structure of the rotating cylinder and the discharging mechanism of the present invention; Figure 5 Schematic diagram of the internal structure of the fixed platform of the present invention; Figure 6 Schematic diagram of the structure of the top material component and the dredging component of the present invention; Figure 7 Schematic diagram of the structure of the counterweight rod, the top plate and the ejector rod of the present invention; Figure 8 Schematic diagram of the structure of the positioning plate of the present invention; Figure 9 Schematic diagram of the split structure of the energy storage unit and the rotating cylinder of the present invention; Figure 10 Schematic diagram of the contact state between the counterweight rod and the sliding sleeve of the present invention; Figure 11 Schematic diagram of the structure of part of the drive unit and the energy-saving heat dissipation module of the present invention.

[0020] In the figure: 1, cylinder body; 2, drive unit; 3, transfer part; 31, guide post; 32, material guide plate; 33, baffle; 4, rotating cylinder; 5, partition board; 6, lining board; 7, fixed platform; 8, screening hole; 9, top material component; 91, synchronous rod; 92, top plate; 93, counterweight rod; 94, connecting rod; 95, support rod one; 10, positioning plate; 11, U-shaped positioning groove; 12, triangular plate; 13, diversion plate; 14, dredging component; 141, coupling shaft; 142, ejector rod; 143, driving rod; 144, support rod two; 15, energy storage unit; 151, sliding sleeve; 152, positioning rod; 153, limit block; 16, energy-saving heat dissipation module; 161, protective cover; 162, fan blade. Detailed implementation manners

[0021] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will give a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0022] Example 1, referring to Figures 1 - 8, which is the first embodiment of the present invention, provides an energy-saving ball mill for processing zinc-containing materials based on the production of zinc sulfate heptahydrate, including a base, a cylinder body 1, and a driving unit 2. The cylinder body 1 is rotatably installed on the base and is driven by the driving unit 2. A transfer member 3 is installed in the middle of the inner wall of the cylinder body 1, and the transfer member 3 divides the inside of the cylinder body 1 into a coarse grinding area and a fine grinding area. A rotating cylinder 4 is provided in the coarse grinding area. A plurality of partition plates 5 are commonly connected between the outer wall of the rotating cylinder 4 and the inner wall of the cylinder body 1. A plurality of discharging mechanisms are arranged in the rotating cylinder 4 at equal intervals in a circular shape. A plurality of lining plates 6 are laid on the inner wall of the fine grinding area; the discharging mechanism includes a fixed platform 7 connected to the inner wall of the rotating cylinder 4, and a top material component 9 arranged in the fixed platform 7. The fixed platform 7 has a cavity structure and is communicated with the rotating cylinder 4. A plurality of screening holes 8 are opened on one inclined surface of the fixed platform 7. The discharging mechanism further includes a plurality of positioning plates 10. The positioning plates 10 are arranged between adjacent two fixed platforms 7, and one end of the positioning plate 10 is fixedly connected to the inner wall of the rotating cylinder 4; the top material component 9 includes a synchronous rod 91 arranged in the fixed platform 7. A plurality of top plates 92 are linearly and equally spacedly connected to the side of the synchronous rod 91 away from the screening holes 8. The top plates 92 movably penetrate through the fixed platform 7. A counterweight rod 93 is arranged between the rotating cylinder 4 and the cylinder body 1. Both ends of the counterweight rod 93 are eccentrically connected with a connecting rod 94. The other end of the connecting rod 94 passes through the rotating cylinder 4 and is rotatably connected to the fixed platform 7, and the connecting rod 94 is used to drive the synchronous rod 91 to rotate.

[0023] Specifically, the coarse grinding area is located on the side of the cylinder body 1 facing the feeding end, and the fine grinding area is on the side of the cylinder body 1 facing the discharging end. When the driving unit 2 drives the cylinder body 1 to rotate, the massive materials first enter the cavity of the rotating cylinder 4 in the coarse grinding area. Under the action of centrifugal force, the materials and grinding balls accumulate between the fixed platform 7 and the positioning plate 10 and move upward; at the same time, the counterweight rod 93 drives the connecting rod 94 to rotate due to gravity, and then the synchronous rod 91 drives the top plate 92 to rotate and extend out of the fixed platform 7, pushing out the materials and grinding balls accumulated between the fixed platform 7 and the rotating cylinder 4 in advance. The grinding balls separated from the fixed platform 7 slide downward under the action of gravity and get stuck on the positioning plate 10, while the massive materials continue to turn and crush in the rotating cylinder 4. As the grinding process progresses, the crushed small materials pass through the screening holes 8 of the lower fixed platform 7 and fall to the bottom of the cylinder body 1. At this time, the partition plate 5 plays a guiding role and conveys the small materials into the transfer member 3. Finally, the transfer member 3 drives the small materials into the fine grinding area, and under the synergistic action of the grinding balls and the lining plates 6, further fine grinding is completed.

[0024] Among them, after the top plate 92 ejects the material and the grinding balls, the grinding balls will get stuck on the positioning plate 10 and separate from the massive materials that continue to tumble in the rotating drum 4. When the positioning plate 10 rotates upward with the rotating drum 4, the grinding balls are simultaneously affected by centrifugal force, the frictional force with the positioning plate 10, and their own gravity. As the rotating drum 4 rotates to a specific angle, the self-gravity of the grinding balls gradually overcomes the centrifugal force and the frictional force, loses restraint at the highest point of the rotating drum 4, and falls downward. At this time, the grinding balls impact the massive materials with the maximum impact force, forming an efficient grinding effect. This design enables the massive materials to be more fully and specifically ground in the rotating drum 4, effectively avoiding the ineffective collisions generated by the mixed movement of the grinding balls and the materials, improving the grinding quality while significantly reducing energy consumption and optimizing the entire grinding process.

[0025] In addition, the coarse grinding area focuses on initially crushing the massive materials, while the fine grinding area finely grinds the small pieces of materials after coarse grinding. This clearly divided grinding method can process materials more efficiently, reduce the grinding time, and improve the overall production efficiency compared to a single grinding area. At the same time, the graded grinding ensures the particle size uniformity and fineness of the final product, meeting the strict requirements for the grinding quality of zinc-containing materials in the production of zinc sulfate heptahydrate.

[0026] It should be noted that the gravity design of the counterweight rod 93 is greater than the centrifugal force generated when the cylinder body 1 rotates. When the cylinder body 1 continuously rotates driven by the drive unit 2, the counterweight rod 93 in the upward movement trajectory from bottom to top, relying on its gravity advantage, always exerts a stable downward pressure on the connecting rod 94 eccentrically connected to it. This pressure makes the connecting rod 94 maintain a specific rotation trend, thereby driving the synchronous rod 91 to rotate and driving the top plate 92 to extend out of the fixed platform 7, realizing the ejection operation of the materials and the grinding balls, and ensuring the stable and continuous operation of the discharging mechanism.

[0027] Refer to Figure 2 And Figure 3 , the transfer part 3 includes a guide post 31 with a frustum-shaped structure. A plurality of guide plates 32 are fixedly connected to the outer wall of the arc side of the guide post 31 at equal intervals in a ring shape. Circular baffles 33 are provided on both axial sides of the guide post 31. The baffles 33 are fixedly connected to the guide plates 32 and the inner wall of the cylinder body 1, and a plurality of feed holes are opened at equal intervals in a ring shape at the edge of the baffle 33 on the side of the coarse grinding area, and a discharge hole is opened in the middle of the baffle 33 on the side of the fine grinding area.

[0028] Specifically, an acute angle is formed between the guide plate 32 and the baffle 33 on the side facing the fine grinding area. The small pieces of materials in the cylinder body 1 enter between two adjacent guide plates 32 through the feed holes under the action of the partition plate 5. As the cylinder body 1 rotates, the small pieces of materials move towards the discharge hole under the action of the guide plate 32 and finally roll into the fine grinding area.

[0029] Refer toFigure 2 , multiple partitions 5 are arranged in a circular shape with equal spacing and spiral distribution, and one end of the partition 5 faces the feed hole.

[0030] Specifically, under the combined action of centrifugal force and the rotation of the cylinder 1, small pieces of material cling to the surface of the partition 5 and gradually move toward the side of the transfer member 3 along the spiral trajectory. Since one end of the partition 5 is set toward the feed hole, when the material moves to a specific position along the spiral path, it passes through the feed hole and enters the transfer member 3, completing the transition from the coarse grinding area to the fine grinding area. The entire transfer process is coherent and efficient, ensuring the orderly flow of materials in the cylinder 1.

[0031] Reference Figures 4 - 7 The top plate 92 is fan-shaped and one end of the central angle is rotatably connected to the fixed platform 7. A support rod 95 is hinged between the end of the connecting rod 94 close to the fixed platform 7 and the synchronous rod 91.

[0032] Specifically, when the counterweight rod 93 moves upward from the bottom, the eccentric torque generated by gravity drives the connecting rod 94 to rotate counterclockwise around the hinge point. The rotation of the connecting rod 94 transmits the force to the synchronization rod 91 through the support rod 95. The synchronization rod 91 drives the top plate 92 connected to it with the hinge point as the axis, and one end gradually extends out of the fixed platform 7, thereby realizing the ejection operation of the materials and grinding balls accumulated between the fixed platform 7 and the rotating drum 4.

[0033] It is worth noting that during the extension process of the top plate 92, the other end always remains inside the fixed platform 7. This design effectively prevents debris from entering the through-hole area where the top plate 92 moves, prevents jamming caused by accumulation of debris, ensures that the ejection assembly 9 can operate stably for a long time, and guarantees the efficiency and reliability of the discharge mechanism.

[0034] Reference Figure 4 and Figure 8 A plurality of U-shaped positioning grooves 11 are provided on the positioning plate 10 at equal intervals, and a plurality of triangular plates 12 are fixedly connected between the positioning plate 10 and the inner wall of the rotating drum 4 .

[0035] Specifically, the triangular plate 12 forms an acute angle between the positioning plate 10 and the inner wall of the drum 4. When the ejecting assembly 9 ejects the bulk material and grinding balls on the fixed platform 7, the material and grinding balls fall downward under the action of gravity. When the material passes through the positioning plate 10, it can continue to flow downward along the surface of the positioning plate 10 or the cavity of the U-shaped positioning groove 11. Since the inner diameter of the U-shaped positioning groove 11 is precisely matched with the outer diameter of the grinding balls in the coarse grinding area, the grinding balls will be stably engaged in the U-shaped positioning groove 11 as the positioning plate 10 rotates upward. This design allows the grinding balls to be brought to the highest point of the drum 4 by the positioning plate 10. At this time, the gravitational potential energy accumulated by the grinding balls due to the height difference is converted into maximized impact kinetic energy, and they hit the bulk material with a stronger impact force when falling, significantly improving the grinding effect. Furthermore, multiple grinding balls are evenly spaced on the positioning plate 10 via U-shaped positioning slots 11, ensuring they maintain independent motion paths as they rotate and fall with the drum 4, preventing kinetic energy loss due to collisions. This orderly distribution allows the grinding balls to more accurately and efficiently engage the material, further improving grinding efficiency in the coarse grinding zone while reducing ineffective energy consumption and optimizing the overall grinding process.

[0036] It should be noted that the grinding balls in the coarse grinding zone are of the same size, while the grinding balls in the fine grinding zone are of different sizes. The bulk material will be pre-crushed by a jaw crusher or the like before entering the coarse grinding zone, thereby avoiding excessively large particles increasing the energy consumption of the ball mill. At the same time, the size of the bulk material after pre-crushing is smaller than the size of the grinding balls in the coarse grinding zone, so that the bulk material can pass through the U-shaped positioning groove 11 smoothly. The grinding balls of different sizes in the fine grinding zone can refine the small pieces of material and process them into a powder state.

[0037] Reference Figure 8 A guide plate 13 is provided between two adjacent U-shaped positioning grooves 11 . The guide plate 13 is a triangular prism structure and is fixedly connected to the positioning plate 10 .

[0038] Specifically, when the grinding ball falls from above and contacts the guide plate 13, based on the geometric characteristics of the triangular prism slope, the gravity acting on the grinding ball is decomposed along the slope into a horizontal component and a vertical component. The horizontal component drives the grinding ball to roll toward the U-shaped positioning groove 11, while the vertical component provides the pressure required to snap into the positioning groove. This structural design allows the grinding ball to accurately roll into the U-shaped positioning groove 11 along a specific trajectory after contacting the guide plate 13, effectively reducing the probability of the grinding ball escaping the positioning groove. At the same time, the triangular prism structure of the guide plate 13 enhances the overall rigidity of the positioning plate 10, reduces deformation caused by the impact of the grinding ball, further improves the stability of the snap connection, and ensures that the grinding ball can be reliably positioned and moves to the highest point with the positioning plate 10 to obtain maximum impact kinetic energy.

[0039] Example 2, reference Figures 4 - 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the discharge mechanism also includes a dredging component 14 arranged in the fixed platform 7, the dredging component 14 includes a connecting shaft 141 rotatably connected to the inner wall of the fixed platform 7, and a plurality of push rods 142 are fixedly connected to the outer wall of the connecting shaft 141 at linear and equal intervals. A driving rod 143 is fixedly connected at both ends of the connecting shaft 141, and a support rod 144 is hinged between the driving rod 143 and the connecting rod 94.

[0040] Specifically, when the fixed platform 7 performs an upward motion, the rotation of the connecting rod 94 is transmitted to the connecting shaft 141 through the second support rod 144, driving it to produce circumferential rotation. This rotation causes the linear array's top rods 142 to synchronously move in an arc, with their movable ends sweeping along the axial trajectory of the sieve holes 8. During this movement, the ends of the top rods 142 can effectively penetrate the material blocking the sieve holes 8, achieving targeted removal of the blockage. This mechanical linkage design ensures that when the fixed platform 7 returns to the lower position, the sieve holes 8 always maintain the preset material passage cross-section, ensuring the stability and efficiency of the continuous screening operation.

[0041] Understandably, referring to Figure 7 The connection points between the strut 1 95, the strut 2 144 and the connecting rod 94 are located on the upper and lower sides of the rotation axis of the connecting rod 94, so that the connecting rod 94 can drive the strut 1 95 and the strut 2 144 to move when rotating.

[0042] Reference Figure 9 A force storage unit 15 is provided on the top material assembly 9, and the force storage unit 15 includes a sliding sleeve 151 that is slidably connected to the outer wall of the connecting rod 94. A positioning rod 152 is fixed on the outer wall of the sliding sleeve 151, and a positioning groove that is compatible with the positioning rod 152 is provided on the rotating drum 4. A limit block 153 is provided on the side of the sliding sleeve 151 facing the counterweight rod 93. The limit block 153 is a trapezoidal structure and is fixedly connected to the counterweight rod 93.

[0043] Specifically, during the initial upward movement of the ejection assembly 9 from the bottom, the positioning rod 152 remains engaged with the positioning groove of the drum 4, and the connecting rod 94 is in a rotationally locked state. Since the counterweight rod 93 and the connecting rod 94 are designed to be eccentrically connected, the counterweight rod 93 forces the trapezoidal stopper 153 to remain at the top position of the counterweight rod 93 under the action of the gravity torque. When the motion trajectory exceeds the critical point, the stopper 153 separates from the contact surface of the sleeve 151. At this time, under the combined action of centrifugal force and the weight of the sleeve 151, the positioning rod 152 quickly breaks free from the constraint of the positioning groove. This mechanical unlocking mechanism allows the gravitational potential energy accumulated in the counterweight rod 93 to be released instantly, driving the connecting rod 94 to achieve explosive rotation, thereby causing the ejector plate 92 and the ejector rod 142 to obtain peak kinetic energy, ensuring that its actuator (ejection / clearing action) has maximum working intensity.

[0044] Among them, reference Figure 10, when the counterweight rod 93 starts to move upward from the lowermost side and rotates more than 90°, the outer peripheral surface of the counterweight rod 93 contacts the sliding sleeve 151, pushing the sliding sleeve 151 to slide downward along the axis of the connecting rod 94, so that the positioning rod 152 is retracted into the inner cavity area of the rotating cylinder 4. When the counterweight rod 93 continues to move until it rotates 180°, the counterweight rod 93 drives the connecting rod 94 to rotate clockwise under the action of gravity. At this time, the trajectory plane of the positioning rod 152 is collinear and aligned with the positioning groove of the rotating cylinder 4. Subsequently, under the action of centrifugal force, the sliding sleeve 151 drives the positioning rod 152 to move radially outward, so that it is accurately embedded in the positioning groove, realizing the secondary movement locking of the connecting rod 94. The rest of the structure is the same as that of Embodiment 1.

[0045] Embodiment 3, refer to Figure 1 with Figure 11 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that an energy-saving heat dissipation module 16 is provided on the driving unit 2. The energy-saving heat dissipation module 16 includes a protective cover 161 and a fan blade 162. The protective cover 161 is sleeved outside the motor of the driving unit 2, and the fan blade 162 is installed on the output shaft of the motor.

[0046] Specifically, the setting of the protective cover 161 can provide a physical protection barrier for the motor of the driving unit 2. At the same time, the motor drives the fan blade 162 to rotate, so that a directional air flow is formed in the protective cover 161, thereby increasing the heat dissipation efficiency of the motor surface and improving the energy-saving effect of the motor. The rest of the structure is the same as that of Embodiment 2.

[0047] Combining Embodiments 1-3, the working principle of the present invention: During operation, the driving unit 2 drives the cylinder 1 to rotate. The bulk material first enters the coarse grinding area. Under the action of centrifugal force, the material and the grinding balls are stacked between the fixed table 7 and the positioning plate 10. The gravity of the counterweight rod 93 drives the top plate 92 to periodically eject through the connecting rod 94, separating the grinding balls from the material. The grinding balls are accurately clamped by the U-shaped positioning groove 11 of the positioning plate 10 and fall freely after being brought to the high point, crushing the material with the maximum impact force; the crushed small particle material enters the bottom of the cylinder 1 through the screening holes 8 and is introduced into the transfer part 3 through the spiral partition 5, and enters the fine grinding area for secondary fine grinding; the discharging mechanism is equipped with a dredging component 14, and the screening holes 8 are regularly cleaned by the ejector rod 142 linked by the connecting rod 94 to prevent blockage.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An energy-saving ball mill for processing zinc-containing materials based on the production of zinc sulfate heptahydrate, comprising a base, a cylinder body and a driving unit, wherein the cylinder body is rotatably installed on the base and driven by the driving unit, and is characterized in that: A transfer member is installed in the middle of the inner wall of the cylinder body. The transfer member divides the inside of the cylinder body into a rough grinding area and a fine grinding area. A rotating cylinder is arranged in the rough grinding area. A plurality of partition plates are jointly connected between the outer wall of the rotating cylinder and the inner wall of the cylinder body. A plurality of discharging mechanisms are arranged in the rotating cylinder at equal intervals in a circular shape. A plurality of lining plates are laid on the inner wall of the fine grinding area; The discharging mechanism includes a fixed platform connected to the inner wall of the rotating cylinder and a top material assembly arranged in the fixed platform. The fixed platform has a cavity structure and is communicated with the rotating cylinder. A plurality of screening holes are opened on one inclined surface of the fixed platform. The discharging mechanism further includes a plurality of positioning plates. The positioning plates are arranged between adjacent two fixed platforms, and one end of the positioning plate is fixedly connected to the inner wall of the rotating cylinder; The top material assembly includes a synchronous rod arranged in the fixed platform. A plurality of top plates are linearly and equally spacedly connected to one side of the synchronous rod away from the screening holes. The top plates movably penetrate through the fixed platform. A counterweight rod is arranged between the rotating cylinder and the cylinder body. Both ends of the counterweight rod are eccentrically connected with connecting rods. The other ends of the connecting rods pass through the rotating cylinder and are rotatably connected to the fixed platform, and the connecting rods are used to drive the synchronous rod to rotate.

2. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 1, wherein: The transfer member includes a guiding column with a frustum-shaped structure. A plurality of guiding plates are fixedly connected to the outer wall of the arc side of the guiding column at equal intervals in a circular shape. Circular baffles are arranged on both axial sides of the guiding column. The baffles are fixedly connected to the guiding plates and the inner wall of the cylinder body. A plurality of feeding holes are opened at equal intervals in a circular shape at the edge of the baffle on the side of the rough grinding area. A discharging hole is opened in the middle of the baffle on the side of the fine grinding area.

3. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 2, wherein: The plurality of partition plates are spirally distributed at equal intervals in a circular shape, and one end of the partition plate faces the feeding hole.

4. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 1, characterized in that: The top plate has a fan-shaped structure and one end of the central angle is rotatably connected to the fixed platform. A first supporting rod is jointly hinged between one end of the connecting rod close to the fixed platform and the synchronous rod.

5. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 1, characterized in that: A plurality of U-shaped positioning grooves are opened at equal intervals on the positioning plate. A plurality of triangular plates are jointly fixedly connected between the positioning plate and the inner wall of the rotating cylinder.

6. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 5, wherein: A flow guiding plate is arranged between adjacent two U-shaped positioning grooves. The flow guiding plate has a triangular prism structure and is fixedly connected to the positioning plate.

7. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 1, wherein: The discharging mechanism further includes a dredging component arranged in the fixed platform. The dredging component includes a connecting shaft rotatably connected to the inner wall of the fixed platform. A plurality of ejector rods are linearly and equally spacedly fixedly connected to the outer wall of the connecting shaft. Driving rods are fixedly connected to both ends of the connecting shaft. A second supporting rod is jointly hinged between the driving rod and the connecting rod.

8. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 1, characterized in that: A power storage unit is arranged on the top material assembly. The power storage unit includes a sliding sleeve slidably sleeved on the outer wall of the connecting rod. A positioning rod is fixed on the outer wall of the sliding sleeve. A positioning groove adapted to the positioning rod is opened on the rotating cylinder. A limiting block is arranged on one side of the sliding sleeve facing the counterweight rod. The limiting block has a trapezoidal structure and is fixedly connected to the counterweight rod.

9. The energy-saving ball mill for treating zinc-containing materials produced based on zinc sulfate heptahydrate according to claim 1, characterized in that: An energy-saving heat dissipation module is arranged on the driving unit. The energy-saving heat dissipation module includes a protective cover and fan blades. The protective cover is sleeved on the outside of the motor of the driving unit. The fan blades are installed on the output shaft of the motor.

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