Ore powder grinding process and grinding production system thereof

Abstract

The application relates to the field of mineral grinding, in particular to an ore powder grinding process and a grinding production system thereof, which comprises the following steps: rough selection; primary crushing, feeding stone into a crusher to perform primary crushing to obtain stone with a medium particle size; metal screening, feeding the stone with the medium particle size into a metal separator to perform screening; secondary crushing, feeding the stone with the medium particle size into the crusher to perform secondary crushing to obtain stone with a small particle size; powder grinding, feeding the stone with the small particle size into a grinder after being fully mixed with a dispersing agent; grading, grading the ground powder under the action of a separator, feeding the powder meeting fineness requirements into a storage bin, and feeding unqualified powder back to the grinder for regrinding; packaging, collecting qualified powder for packaging; and cleaning residual powder in the grinder. After the device is used, the grinder is cleaned, the probability of powder remaining between the grinding disc and the air ring is reduced, the probability of grinding disc abrasion is reduced, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mineral grinding, in particular to a mineral powder grinding process and a grinding production system thereof. BACKGROUND

[0002] There are various types of ores, such as river pebbles, green stones, limestones, calcites, fluorites, barites, potash feldspar, bauxite, phosphorite, talc, etc. These rocks are widely used in the building materials, chemical, metallurgical, ceramic, refractory material industries due to their different characteristics and different chemical functions. When the ore powder is needed, a vertical mill is used to grind the ore into powder. The vertical mill is an ideal device in the grinding industry, which integrates crushing, drying, grinding, and classification conveying. It is used to grind blocky, granular, and powdery raw materials into the required powdery materials.

[0003] In the production process of the powder, the main motor drives the grinding disc to rotate through the speed reducer, and hot air enters the vertical mill body from the air inlet. The material falls to the center of the grinding disc through the feeding pipe. The grinding disc rotates at a constant speed and uniformly disperses and flattens the raw material outward under the action of centrifugal force, so that the material forms a certain thickness of the material bed. The material is crushed by multiple grinding rollers on the grinding disc. Under the continuous driving of the centrifugal force, the material continuously moves to the outer edge of the grinding disc. When the material leaving the grinding disc meets the hot gas entering the mill through the air ring and rises with it, it enters the separator through the middle shell of the mill. In this process, the material and the hot gas are fully exchanged, and the moisture is rapidly evaporated. The classifier controls the particle size of the finished product at the roller mill outlet. The particles larger than the specified size are separated and fall back to the grinding disc. The material meeting the fineness requirement passes through the classifier into the dust collector, and the collected finished product is sent to the finished product bin.

[0004] The utility model patent with the authorized publication number CN218502186U discloses a mineral powder grinding device, which comprises a mill barrel and a mill support connected thereto. An inlet is arranged on the side wall of the mill barrel, and an outlet is arranged on the top. A grinding disc and a grinding roller are arranged inside the mill barrel. A rotary air lock valve is arranged at the inlet. The grinding disc is arranged at the bottom of the mill barrel. The outer periphery of the grinding disc is in contact with the inner wall of the mill barrel through an air ring. The grinding disc is connected to a power device to rotate. An air inlet is arranged below the air ring. The roller surface of the grinding roller is tightly attached to the grinding surface of the grinding disc and is driven to rotate by the grinding disc. The device can rapidly grind fine minerals, is simple to operate, has good material processing quality, and is fast.

[0005] However, the existing mill has certain drawbacks in use. Due to the blocking of the anti-flying dam, a part of the powder is accumulated on the connection between the grinding disc and the air ring and is not easy to discharge, resulting in an error in the powder output and difficulty in cleaning. Due to the poor sealing effect, the powder dust easily blocks the gap between the grinding disc and the air ring, causing friction between the grinding disc and the air ring and generating heat and wear. SUMMARY

[0006] In order to prolong the service life of the device, the application provides an ore powder grinding process and a grinding production system thereof.

[0007] In the first aspect, the application provides an ore powder grinding process, which adopts the following technical scheme:

[0008] An ore powder grinding process comprises the following steps:

[0009] Coarse selection, removing obvious impurities and foreign matters in various ores;

[0010] Primary crushing, feeding the stone into a crusher for primary crushing to obtain stone with a medium particle size;

[0011] Metal screening, feeding the stone with the medium particle size into a metal sorting machine for screening;

[0012] Secondary crushing, feeding the stone with the medium particle size into a crusher for secondary crushing to obtain stone with a small particle size, and feeding the stone with the small particle size into a transfer bin;

[0013] Grinding, feeding the stone with the small particle size and a dispersing agent into a grinder for grinding after fully mixing them;

[0014] Classification, classifying the ground powder under the action of a separator, feeding the powder meeting the fineness requirement into a storage bin, and feeding the unqualified powder back to the grinding;

[0015] Packaging, collecting the qualified powder for packaging;

[0016] Cleaning the residual powder in the grinder.

[0017] By adopting the above technical scheme, the grinder is cleaned after the device is used, the probability of the residual powder between the grinding disc and the air ring is reduced, the probability of the grinding disc wear is reduced, and the service life of the device is prolonged.

[0018] Preferably, when the residual powder in the grinder is cleaned, the residual powder is flushed by air in the grinder, so that the residual powder is classified by the separator along with the air.

[0019] By adopting the above technical scheme, the residual powder is blown to the separator for separation, the qualified powder is recycled, the unqualified powder falls back, the powder output error is reduced, and the production precision is improved.

[0020] In the second aspect, the application provides an ore powder grinding production system, which adopts the following technical scheme:

[0021] The ore powder grinding production system comprises a shell, a wind ring, a grinding disc and a blocking ring, the shell is provided with a containing cavity, the wind ring is coaxially fixedly connected to the inner wall of the containing cavity, the grinding disc rotates around its own axis in the wind ring, the axis of the grinding disc is collinear with the axis of the wind ring, a ventilation gap is arranged between the wind ring and the grinding disc, the outer wall of the wind ring towards the grinding disc is provided with a mounting groove, one end of the blocking ring is slidingly connected to the groove wall of the mounting groove, the other end of the blocking ring is used for abutting against the upper surface of the grinding disc, and the blocking ring is used for covering the ventilation gap.

[0022] By adopting the technical scheme, when the grinding disc rotates, the blocking ring covers the ventilation gap, the probability of powder entering the ventilation gap while the grinding disc rotates is reduced, the probability of the grinding disc being damaged due to continuous friction of powder in the ventilation gap is reduced, the service life of the device is prolonged, when the grinding disc stops rotating, the blocking ring resets, the ventilation gap is facilitated to be ventilated and cleaned to remove residual powder, and the powder output error is reduced.

[0023] Preferably, the mounting groove is provided with a plurality of mounting grooves, the plurality of mounting grooves are uniformly and spacedly arranged around the axis of the wind ring, the blocking ring is provided with a plurality of blocking rings, the blocking ring and the mounting groove are one-to-one correspondingly arranged, and the adjacent blocking rings abut against each other when covering the ventilation gap.

[0024] By adopting the technical scheme, the plurality of blocking rings jointly cover the ventilation gap, the probability of powder blocking the ventilation gap is reduced, the probability of the grinding disc being damaged due to continuous friction of powder in the ventilation gap is reduced, and the service life of the device is prolonged.

[0025] Preferably, the device further comprises a louver fan, the upper end of the wind ring is provided with a ventilation ring opening, both ends of the louver fan are hingedly connected to the inner wall of the ventilation ring opening, the hinged axis of the louver fan and the inner wall of the ventilation ring opening is along the radial direction of the wind ring, the louver fan is provided with a plurality of louver fans, the plurality of louver fans are uniformly and spacedly arranged around the axis of the wind ring, and the plurality of louver fans cover the ventilation ring opening when simultaneously horizontal.

[0026] By adopting the technical scheme, when the grinding machine is not working, the louver fan simultaneously horizontally covers the ventilation ring opening, the probability of powder falling into the wind ring from the ventilation ring opening is reduced, and the powder waste is reduced.

[0027] Preferably, the device further comprises a bevel gear and a driving ring, the wind ring is coaxially provided with a connecting cavity, the connecting cavity is arranged between the ventilation ring opening and the grinding disc, the connecting cavity is communicated with the mounting groove, the hinged shaft of the louver fan extends into the connecting cavity and is coaxially fixedly connected to the bevel gear, the driving ring is rotatably connected to the inner wall of the connecting cavity around its own axis, the lower end of the driving ring is provided with first meshing teeth, and the bevel gear is meshed with the lower end of the driving ring.

[0028] By adopting the technical scheme, the driving ring rotates to control the synchronous rotation of the plurality of louver fans, the opening and closing of the ventilation ring opening are simultaneously controlled, and the operation is simple and convenient.

[0029] Preferably, the driving ring is provided with a flat thread at the upper end, the sliding block is fixedly connected to one end of the baffle ring away from the axis of the air ring, and the lower end of the sliding block is provided with a second meshing tooth, and the lower end of the sliding block is engaged with the upper end of the driving ring.

[0030] By adopting the above technical scheme, the driving ring rotates while controlling the sliding of the sliding block. When the louver fan opens the air ring opening, the baffle ring covers the ventilation gap, so that dust is not easy to enter the ventilation gap while the grinding disc rotates. When the louver fan covers the air ring opening, the ventilation gap is opened, which facilitates cleaning of the ventilation gap and facilitates discharge of accumulated residual dust, and the operation is simple and convenient.

[0031] Preferably, the air ring is provided with a driving groove on the outer wall facing the grinding disc, the driving groove is communicated with the connecting cavity, the driving rod is slidingly connected to the groove wall of the driving groove, the driving rod is connected to the sliding block through the transmission member, the outer wall of the grinding disc is provided with a placing groove, the pushing rod is slidingly connected to the groove wall of the placing groove, and the pushing ring is fixedly connected to one end of the pushing rod away from the axis of the grinding disc. The pushing ring is used to push the driving rod to move.

[0032] By adopting the above technical scheme, the grinding disc rotates while the pushing ring moves in the direction of the original grinding disc axis due to centrifugal force. The pushing ring pushes the driving rod to move through the transmission member to move the sliding block. At this time, the driving ring rotates to make the plurality of baffle rings slide synchronously to cover the ventilation gap and open the air ring opening. No additional driving source is needed, and the grinding disc can automatically control the covering of the ventilation gap and the opening of the air ring opening when it is started.

[0033] Preferably, the transmission member includes a first rack, a gear and a second rack, the first rack is fixedly connected to one end of the sliding block facing the driving rod, the second rack is fixedly connected to a section of the driving rod facing the sliding block, the gear is rotationally connected to the inner wall of the connecting cavity about its own axis, the rotation axis of the gear is vertical, and the first rack and the second rack are respectively engaged with both ends of the gear.

[0034] By adopting the above technical scheme, the pushing ring makes the driving rod move away from the grinding disc axis, and the transmission member makes the sliding block move towards the grinding disc axis, so that the baffle ring covers the ventilation gap. The structure is simple and the operation is simple and convenient.

[0035] Preferably, the first spring is fixedly connected to one end of the placing groove, and the other end of the first spring is fixedly connected to the pushing rod.

[0036] By adopting the above technical scheme, the first spring makes the pushing rod not easy to be thrown out of the placing groove, and when the grinding disc stops rotating, the first spring makes the pushing rod automatically reset.

[0037] In summary, the present application includes at least one of the following beneficial technical effects:

[0038] 1. After the device is used, the grinder is cleaned, reducing the probability of powder remaining between the grinding disc and the air ring, reducing the probability of grinding disc wear, and prolonging the service life of the device;

[0039] 2. When the grinding disc rotates, the blocking ring covers the ventilation gap, reducing the probability of powder entering the ventilation gap while the grinding disc is rotating, reducing the probability of the grinding disc being damaged by constant friction with the powder in the ventilation gap, prolonging the service life of the device, and when the grinding disc stops rotating, the blocking ring resets, facilitating ventilation to clean the remaining powder in the ventilation gap and reducing the powder output error;

[0040] 3. While the grinding disc is rotating, the push ring moves towards the principle grinding disc axis due to centrifugal force, the push ring pushes the drive rod to move through the transmission member to move the sliding block, at this time, the drive ring rotates to make multiple blocking rings slide synchronously to cover the ventilation gap, and the ventilation ring opening is opened, without using an additional driving source, the grinding disc can be automatically controlled to cover the ventilation gap and open the ventilation ring opening when it starts. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of a mineral powder grinding production system.

[0042] Figure 2 It is a sectional view of a mineral powder grinding production system.

[0043] Figure 3 It is a schematic diagram of the internal structure of a mineral powder grinding production system after being cut open.

[0044] Figure 4 It is a schematic diagram of the internal structure of the discharge assembly, grinding disc and blocking dam after being cut open.

[0045] Figure 5 It is a schematic diagram of the overall structure of the blocking ring, louver fan, bevel gear, drive ring, sliding block, drive member and transmission member.

[0046] Explanation of reference numerals in the attached drawings: 1. Shell; 11. Receiving cavity; 12. Discharge port; 13. Feed port; 14. Air inlet; 15. Connecting port; 16. Mounting port; 2. Separation assembly; 21. First drive motor; 22. Rotating column; 23. Conical guide surface; 24. Return cylinder; 25. Screen; 3. Grinding assembly; 31. Second drive motor; 32. Reducer; 33. Grinding disc; 331. Placement slot; 34. Fixed base; 35. Rotating arm; 36. Grinding roller; 4. Discharge assembly; 41. Air ring; 411. Ventilation ring cavity; 412. Air inlet; 413. Connecting port; 414. Air gap; 415. Air outlet; 416. Mounting groove; 417. Ventilation ring; 418. Connecting cavity; 419. Drive groove; 42. Retaining ring; 43. Louvered fan; 44. Bevel gear; 45. Drive ring; 451. First meshing tooth; 452. Planar thread; 46. Sliding block; 461. Second meshing tooth; 47. Drive component; 471. Drive rod; 472. Second spring; 473. First spring; 474. Push rod; 475. Push ring; 48. Transmission component; 481. First rack; 482. Gear; 483. Second rack; 5. Air dam. Detailed Implementation

[0047] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0048] This application discloses a process for grinding ore powder. The process includes the following steps:

[0049] Coarse selection removes obvious impurities and foreign matter from various ores;

[0050] The stone is fed into a jaw crusher for primary crushing to obtain medium-sized stone.

[0051] Screening metals involves feeding medium-sized stones into a metal sorting machine for screening.

[0052] Secondary crushing involves feeding medium-sized stones into a crusher for secondary crushing to obtain small-sized stones, which are then sent to a transfer hopper.

[0053] Grinding involves fully mixing small-diameter stone particles with a dispersant and then feeding them into a grinding mill for grinding.

[0054] Grading involves classifying the ground powder using a separator. Powder that meets the fineness requirements enters the storage silo, while unqualified powder is returned for further grinding.

[0055] Packaging: Collect qualified powder and package it.

[0056] Clean the residual powder inside the grinder, ventilate the grinder to flush out the residual powder, and let the residual powder pass through the separator for classification.

[0057] The embodiment of the application discloses a kind of ore powder grinding process implementation principle: after once crushing, metal is screened, and secondary crushing is carried out, the particle size after secondary crushing is smaller, it is convenient to grind, small particle size stone material is ground into powder in grinder, and is separated by separator, after the use of grinder, grinder is cleaned, the probability of powder remaining between grinding disc 33 and wind ring 41 of grinder is reduced, the probability of grinding disc 33 wear is reduced, and the service life of device is prolonged

[0058] The embodiment of the application further discloses an ore powder grinding production system. Figure 1 And Figure 2 An ore powder grinding production system includes a housing 1, a separation assembly 2, a grinding assembly 3, a discharge assembly 4 and a fly barrier 5. The housing 1 is provided with a containing cavity 11, and the outer wall of the housing 1 is sequentially provided from top to bottom with a discharge port 12, a feed port 13 and an air inlet 14. The feed port 13, the air inlet 14 and the discharge port 12 are all communicated with the containing cavity 11.

[0059] The separation assembly 2 includes a first driving motor 21, a rotating column 22, a conical guide surface 23, a return material cylinder 24 and a screen 25. The upper end of the housing 1 is coaxially provided with a communication port 15, and the motor shell of the first driving motor 21 is fixedly connected to the upper end of the housing 1. The motor shaft of the first driving motor 21 is coaxially fixedly connected to one end of the rotating column 22, and the rotating column 22 is coaxially rotatably connected to the inner wall of the communication port 15. The lower end of the rotating column 22 is coaxially fixedly connected to the inner wall of the return material cylinder 24, and the lower end of the screen 25 is coaxially fixedly connected to the outer wall of the upper end of the return material cylinder 24. The upper end of the screen 25 abuts against the top wall of the containing cavity 11. The conical guide surface 23 is arranged in the screen 25, and the outer diameter of the conical guide surface 23 decreases with the increase of height. The upper end of the conical guide surface 23 is coaxially fixedly connected to the outer wall of the rotating column 22, and the lower end of the conical guide surface 23 is coaxially fixedly connected to the inner wall of the screen 25. The discharge port 12 is arranged in the inner periphery of the screen 25.

[0060] Referring to Figure 2 And Figure 3The grinding assembly 3 comprises a second driving motor 31, a speed reducer 32, a grinding disc 33, a fixed seat 34, a rotating arm 35 and a grinding roller 36. The motor shell of the second driving motor 31 is connected to the ground. The motor shaft of the second driving motor 31 is coaxially and fixedly connected to the input shaft of the speed reducer 32. The output shaft of the speed reducer 32 is coaxially and fixedly connected to the grinding disc 33. The grinding disc 33 rotates around its own axis in the accommodating cavity 11. The rotating axis of the grinding disc 33 is collinear with the rotating axis of the material returning cylinder 24. The fixed seat 34 is arranged on the outer wall of the shell 1. One end of the rotating arm 35 is hingedly connected to the fixed seat 34. The other end of the rotating arm 35 is coaxially and fixedly connected to the grinding roller 36. The hinge axis of the rotating arm 35 and the fixed seat 34 is horizontal. The outer wall of the grinding roller 36 abuts against the upper end of the grinding disc 33. The height of the grinding disc 33 is less than the height of the feeding port 13 and the height of the material returning cylinder 24. The height of the grinding disc 33 is greater than the height of the air inlet 14. The outer wall of the shell 1 is provided with a mounting port 16. The mounting port 16 is arranged below the feeding port 13. The mounting port 16 is used for the rotating arm 35 to extend into.

[0061] With reference to Figure 4 and Figure 5 The discharging assembly 4 comprises an air ring 41, a blocking ring 42, a louver fan 43, a bevel gear 44, a driving ring 45, a sliding block 46, a driving member 47 and a transmission member 48.

[0062] With reference to Figure 3 and Figure 4 The air ring 41 is coaxially and fixedly connected to the inner wall of the accommodating cavity 11. The air ring 41 is coaxially provided with a ventilation ring cavity 411. The outer wall of the air ring 41 is provided with an air inlet 412. The air inlet 14 is communicated with the air inlet 412. The outer wall of the grinding disc 33 is coaxially and rotationally connected to the inner wall of the lower end of the air ring 41. The upper end of the grinding disc 33 and the air ring 41 is provided with a ventilation gap 413. The end of the air ring 41 towards the grinding disc 33 is provided with a wind passage 414. The wind passage 414 is communicated with the ventilation gap 413 and the ventilation ring cavity 411.

[0063] The outer wall of the air ring 41 towards the grinding disc 33 is provided with a mounting groove 415. The mounting groove 415 is provided with a plurality of mounting grooves 415. The plurality of mounting grooves 415 are uniformly and spacedly arranged around the axis of the air ring 41. One end of the blocking ring 42 is slidingly connected to the groove wall of the mounting groove 415. The other end of the blocking ring 42 is used for abutting against the upper surface of the grinding disc 33. The blocking ring 42 is provided with a plurality of blocking rings 42. The blocking ring 42 is correspondingly arranged with the mounting groove 415. The blocking ring 42 is used for covering the ventilation gap 413. The adjacent blocking rings 42 abut against each other when covering the ventilation gap 413.

[0064] With reference to Figure 4The upper end of the wind ring 41 is coaxially provided with a ventilation ring opening 416, which is arranged on the outer periphery of the mounting groove 415. The two ends of the louver fan 43 are hingedly connected to the inner wall of the ventilation ring opening 416. The hinging axis of the louver fan 43 is along the radial direction of the wind ring 41. The louver fan 43 is provided with a plurality of louver fans, which are uniformly and spacedly arranged around the axis of the wind ring 41. When the plurality of louver fans 43 are simultaneously horizontal, they cover the ventilation ring opening 416. The upper surface height of the wind ring 41 outside the ventilation ring opening 416 increases with the distance from the ventilation ring opening 416.

[0065] With reference to Figure 4 and Figure 5 The wind ring 41 is coaxially provided with a connecting cavity 417, which is arranged on the inner periphery of the ventilation ring opening 416 and above the overwind opening 414. The connecting cavity 417 is communicated with the mounting groove 415. The hinging shaft of the louver fan 43 extends into the connecting cavity 417 and is fixedly connected to the bevel gear 44 in a coaxial manner. The driving ring 45 is rotatably connected to the inner wall of the connecting cavity 417 around its own axis. The lower end of the driving ring 45 is provided with first meshing teeth 451. The bevel gear 44 is meshed with the lower end of the driving ring 45. The upper end of the driving ring 45 is provided with a flat thread 452. The sliding block 46 is fixedly connected to one end of the baffle ring 42 away from the axis of the wind ring 41. The lower end of the sliding block 46 is provided with second meshing teeth 461, which are meshed with the upper end of the driving ring 45. The sliding block 46 is provided with a plurality of sliding blocks, which are correspondingly arranged with the baffle ring 42.

[0066] The driving member 47 includes a driving rod 471, a second spring 472, a first spring 473, a push rod 474 and a push ring 475. The outer wall of the wind ring 41 facing the grinding disc 33 is provided with a driving groove 418, which is communicated with the connecting cavity 417. The driving groove 418 is provided with a plurality of driving grooves, which are correspondingly arranged with the mounting grooves 415. The driving rod 471 is slidingly connected to the groove wall of the driving groove 418. The driving rod 471 is connected to the sliding block 46 through the transmission member 48, which is arranged in the connecting cavity 417. The transmission member 48 includes a first rack 481, a gear 482 and a second rack 483. The first rack 481 is fixedly connected to one end of the sliding block 46 facing the driving rod 471. The second rack 483 is fixedly connected to one end of the driving rod 471 facing the sliding block 46. The gear 482 is arranged between the first rack 481 and the second rack 483. The gear 482 is rotatably connected to the inner wall of the connecting cavity 417 around its own axis. The rotation axis of the gear 482 is parallel to the axis of the grinding disc 33. The first rack 481 and the second rack 483 are respectively meshed with the two ends of the gear 482. One end of the second spring 472 is fixedly connected to the groove bottom of the driving groove 418. The other end of the second spring 472 is fixedly connected to the driving rod 471.

[0067] With reference to Figure 4 and Figure 5The outer wall of the grinding disc 33 is provided with a placing groove 331, one end of the first spring 473 is fixedly connected to the groove wall of the placing groove 331, the other end of the first spring 473 is fixedly connected to the push rod 474, the push rod 474 is slidingly connected to the groove wall of the placing groove 331, the push ring 475 is fixedly connected to one end of the push rod 474 away from the axis of the grinding disc 33, and the end of the push ring 475 away from the push rod 474 is used for pushing the driving rod 471 to move. The placing groove 331 is provided with a plurality of placing grooves 331, the plurality of placing grooves 331 are uniformly and spacedly arranged around the axis of the grinding disc 33, the push rod 474 is provided with a plurality of push rods 474, the push rod 474 is arranged in one-to-one correspondence with the placing groove 331, and the push ring 475 is provided with a plurality of push rings 475, the push ring 475 is arranged in one-to-one correspondence with the push rod 474. Adjacent push rings 475 are abutted with each other after being thrown out under the action of centrifugal force.

[0068] The fly barrier 5 is coaxially fixedly connected to the upper end of the wind ring 41, is arranged on the inner periphery of the ventilation ring opening 416, and has an outer diameter equal to the inner diameter of the ventilation ring opening 416. The height of the inner side of the fly barrier 5 away from the fly barrier 5 decreases.

[0069] The implementation principle of the ore powder grinding production system in the embodiment of the application is as follows: stone is fed from the feeding port 13 and falls on the grinding disc 33, the second driving motor 31 drives the grinding disc 33 to rotate through the speed reducer 32, the grinding disc 33 rotates to drive the sliding block 46 to move through the driving part 47 and the transmission part 48, the blocking ring 42 covers the ventilation gap 413, the driving ring 45 rotates to synchronously rotate the bevel gear 44, the louver fan 43 opens the ventilation ring opening 416, the stone is moved to the outer periphery under the action of centrifugal force, the grinding roller 36 cooperates with the grinding disc 33 to crush and grind the stone, the stone is blown upward by the hot gas introduced into the ventilation ring opening 416 through the fly barrier 5 after moving to the outer side, the powder is separated by the separation assembly 2 and then discharged through the discharge port 12, when the grinding disc 33 stops rotating, the louver fan 43 closes the ventilation ring opening 416, so that the powder is not easy to fall into the ventilation ring cavity 411, the ventilation gap 413 is opened, the powder on the inner periphery of the fly barrier 5 slides under the action of gravity, the wind cleans the ventilation gap 413 and the residual powder, so that the residual powder is discharged through the separation assembly 2.

[0070] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. An ore fines grinding production system characterized by: The utility model provides a kind of wind ring, including shell (1), wind ring (41), millstone (33) and baffle ring (42), the shell (1) is equipped with containing cavity (11), the wind ring (41) coaxially fixed connection is connected in the inner wall of containing cavity (11), the millstone (33) rotates in wind ring (41) around its axis, the axis of millstone (33) is collinear with the axis of wind ring (41), and the wind ring (41) is equipped with ventilation gap (413) with millstone (33), the outer wall of wind ring (41) is equipped with installation groove (415) towards millstone (33), one end of baffle ring (42) is slidably connected in the groove wall of installation groove (415), the other end of baffle ring (42) is used to abut millstone (33) upper surface, and baffle ring (42) is used to cover ventilation gap (413); Also include louver fan (43), the upper end of wind ring (41) is equipped with ventilation ring mouth (416), both ends of louver fan (43) are hinged to the inner wall of ventilation ring mouth (416), the hinged axis of louver fan (43) and ventilation ring mouth (416) inner wall is along the radial direction of wind ring (41), louver fan (43) is equipped with multiple, multiple louver fan (43) is evenly spaced around the axis of wind ring (41), and multiple louver fan (43) covers ventilation ring mouth (416) when simultaneously horizontal; Also include bevel gear (44) and drive ring (45), the wind ring (41) is coaxially equipped with connecting cavity (417), the connecting cavity (417) is equipped between ventilation ring mouth (416) and millstone (33), the connecting cavity (417) is communicated in installation groove (415), the hinged shaft of louver fan (43) extends into connecting cavity (417) and is coaxially fixedly connected to bevel gear (44), drive ring (45) rotates around its axis and is connected to the inner wall of connecting cavity (417), and the lower end of drive ring (45) is equipped with first meshing tooth (451), and bevel gear (44) is engaged in the lower end of drive ring (45); Also include sliding block (46), the upper end of drive ring (45) is equipped with flat thread (452), the sliding block (46) is fixedly connected to the one end of baffle ring (42) away from the axis of wind ring (41), and the lower end of sliding block (46) is equipped with second meshing tooth (461), and the lower end of sliding block (46) is engaged in the upper end of drive ring (45); The millstone (33) rotates simultaneously by driving piece (47) and transmission member (48) to drive sliding block (46) to move, so that baffle ring (42) covers ventilation gap (413), the drive ring (45) rotates to make bevel gear (44) synchronous rotation, and louver fan (43) opens ventilation ring mouth (416), when the millstone (33) stops rotating, louver fan (43) closes ventilation ring mouth (416), and wind is cleaned to ventilation gap (413).

2. The ore powder grinding production system according to claim 1, characterized in that: The installation groove (415) is provided with a plurality of installation grooves (415) which are uniformly spaced around the axis of the air ring (41), and the baffle ring (42) is provided with a plurality of baffle rings (42) which are correspondingly arranged with the installation grooves (415), and the adjacent baffle rings (42) abut each other when covering the ventilation gap (413).

3. The ore powder grinding production system according to claim 1, characterized in that: Further comprising a driving member (47) and a transmission member (48), the driving member (47) comprises a driving rod (471), a push rod (474) and a push ring (475), the air ring (41) is provided with a driving groove (418) towards the outer wall of the grinding disc (33), the driving groove (418) is communicated with the connecting cavity (417), the driving rod (471) is slidingly connected with the groove wall of the driving groove (418), the driving rod (471) is connected with the sliding block (46) through the transmission member (48), the outer wall of the grinding disc (33) is provided with a placing groove (331), the push rod (474) is slidingly connected with the groove wall of the placing groove (331), and the push ring (475) is fixedly connected with one end of the push rod (474) away from the axis of the grinding disc (33), and the push ring (475) is used for pushing the driving rod (471) to move.

4. The ore powder grinding production system according to claim 3, characterized in that: The transmission member (48) comprises a first rack (481), a gear (482) and a second rack (483), the first rack (481) is fixedly connected with one end of the sliding block (46) towards the driving rod (471), the second rack (483) is fixedly connected with one end of the driving rod (471) towards the sliding block (46), and the gear (482) is rotationally connected with the inner wall of the connecting cavity (417) around its own axis, the rotation axis of the gear (482) is vertical, and the first rack (481) and the second rack (483) are respectively engaged with the two ends of the gear (482).

5. The ore powder grinding production system according to claim 3, characterized in that: Further comprising a first spring (473), one end of the first spring (473) is fixedly connected with the groove bottom of the placing groove (331), and the other end of the first spring (473) is fixedly connected with the push rod (474).

6. A mineral powder grinding process applied to the mineral powder grinding production system of any one of claims 1-5, characterized in that: The method comprises the following steps: Coarse selection, removing obvious impurities and foreign matters in various ores; Primary crushing, feeding the stone into the crusher for primary crushing to obtain stone with medium particle size; Screening metal, feeding the stone with medium particle size into the metal separator for screening; Secondary crushing, feeding the stone with medium particle size into the crusher for secondary crushing to obtain stone with small particle size, and feeding the stone with small particle size into the transfer bin; Grinding, feeding the stone with small particle size and the dispersing agent into the grinder for grinding; Classification, classifying the ground powder under the action of the separator, and feeding the powder meeting the fineness requirement into the storage bin, and feeding the unqualified powder back to the grinding; Packaging, collecting and packaging the qualified powder; Cleaning the residual powder in the grinder.

7. A process for grinding of ore fines as claimed in claim 6 wherein: When cleaning the residual powder in the grinder, air is blown into the grinder to flush the residual powder, so that the residual powder is blown through the separator for classification.

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