Crushing device for pyrite production and operation method

Abstract

The invention discloses a crushing device for pyrite production and an operation method, and mainly relates to the technical field of crushing devices. Comprising a first crushing roller and a second crushing roller, a crushing cavity is formed between the first crushing roller and the second crushing roller, the driving wheel drives a first bearing seat and a second bearing seat to slide on a transverse groove at the same time, and the first gear drives the first crushing roller and the second crushing roller to rotate on the first bearing seat and the second bearing seat at the same time; the pushing plate drives the first shaking plate and the second shaking plate to swing on the shell in a reciprocating mode, a first through hole and a second through hole are formed in the first shaking plate and the second shaking plate respectively, and material returning openings used in cooperation with the first shaking plate are formed in the two sides of the shell respectively. The crushing device has the beneficial effects that the problem that an existing crushing device is not thorough in crushing is solved, the quality and efficiency of crushed iron ore are improved, and the quality of produced industrial sulfuric acid is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing devices, and particularly to a crushing device and an operation method for pyrite production. Background Art

[0002] Industrial sulfuric acid is an oily liquid, generally colorless and transparent. The density of sulfuric acid is greater than that of water, and a large amount of heat is released when it is dissolved in water. It has strong corrosiveness and dehydration. Industrial sulfuric acid has a wide range of uses. In addition to being used in the chemical industry, it is also widely used in the manufacture of fertilizers, non-alkaline cleaners, skin care products, paint additives, and explosives. When producing industrial sulfuric acid, the pyrite needs to be crushed into powder, which is convenient for subsequent processing.

[0003] The existing crushing device cannot crush thoroughly and cannot control the particle size of the discharged material after the iron ore is crushed. Summary of the Invention

[0004] The purpose of the present invention is to provide a crushing device and an operation method for pyrite production, solve the problem that the existing crushing device cannot crush thoroughly, improve the quality and efficiency of the iron ore after crushing, and improve the quality of industrial sulfuric acid production.

[0005] To achieve the above object, the invention is realized through the following technical solutions: A crushing device for pyrite production includes a housing, two sets of roll crushing mechanisms arranged on the housing, and a screening mechanism arranged between the two sets of roll crushing mechanisms. The top and bottom of the housing are respectively provided with a feed inlet and a discharge outlet. The roll crushing mechanism includes transverse grooves symmetrically arranged on both sides of the housing. A first bearing seat and a second bearing seat are slidably connected to the transverse grooves. A first crushing roll and a second crushing roll are respectively rotatably connected between the two first bearing seats and between the two second bearing seats. Shock-absorbing blocks are respectively arranged between the first crushing roll and the first bearing seat, and between the second crushing roll and the second bearing seat. A crushing chamber is formed between the first crushing roll and the second crushing roll. It also includes a driving wheel for simultaneously driving the first bearing seat and the second bearing seat to slide on the transverse grooves, and a first gear for simultaneously driving the first crushing roll and the second crushing roll to rotate on the first bearing seat and the second bearing seat respectively; The screening mechanism includes a first shaking plate and a second shaking plate arranged obliquely. The first shaking plate and the second shaking plate are respectively provided with a first through hole and a second through hole. It also includes a push plate for driving the first shaking plate and the second shaking plate to swing reciprocally on the housing. Return ports for cooperating with the first shaking plate are respectively arranged on both sides of the housing. The first shaking plate is arranged below one of the crushing chambers, and the second shaking plate is arranged above the other crushing chamber.

[0006] Further, it further includes a first sliding plate and a second sliding plate slidably arranged on one side of the housing. The housing is respectively rotatably connected with a first screw rod and a second screw rod that are slidably connected to the first sliding plate. One side of the first sliding plate and the second sliding plate are respectively connected to one of the first bearing seats and one of the second bearing seats. The other sides of the first sliding plate and the second sliding plate are respectively provided with a third screw rod and a fourth screw rod. The third screw rod and the fourth screw rod are respectively threadedly connected to the other first bearing seat and the other second bearing seat. The driving wheel respectively drives the first screw rod, the second screw rod, the third screw rod, and the fourth screw rod to rotate.

[0007] Further, it further includes driven wheels arranged at the ends of the first screw rod and the second screw rod. A plurality of first guide posts are arranged on the side surface of the driven wheel. A plurality of second guide posts are respectively arranged on the left and right sides of the driving wheel. A plurality of limiting plates are respectively arranged on the upper and lower sides of the driving wheel. The second guide posts are sequentially in contact with the corresponding first guide posts and drive the driven wheel to rotate on the housing. The limiting plates are in contact with the end surfaces of the first guide posts and limit the rotation of the driven wheel on the housing.

[0008] Further, spline shafts are respectively arranged at the ends of the third screw rod and the fourth screw rod. Spline sleeves are symmetrically and rotatably connected to the housing. One ends of the two spline sleeves are respectively slidably connected to the spline shafts. The other ends of the two spline sleeves are respectively provided with a first bevel gear and a second bevel gear. It further includes a connecting shaft and a driving shaft rotatably arranged on the housing. One end of the connecting shaft is provided with a third bevel gear that meshes with both the first bevel gear and the second bevel gear. The other end of the connecting shaft is provided with a key groove. The driving wheel is key-connected to the driving shaft and is slidably arranged on the driving shaft. A connecting key that is slidably connected to the key groove is arranged on one side of the driving wheel.

[0009] Further, a first motor is arranged on the housing. The movable end of the first motor is connected to the driving shaft. A first cylinder is arranged on the connecting shaft. The movable end of the first cylinder is connected to the driving wheel.

[0010] Further, movable plates that are slidably connected to the housing are respectively arranged on the first bearing seat and the second bearing seat. A fourth bevel gear is rotatably connected to the movable plate. Fifth bevel gears that mesh with the fourth bevel gear are respectively arranged at both ends of the first crushing roller and the second crushing roller. An output shaft is arranged on the housing. Both ends of the output shaft are respectively key-connected to the fourth bevel gear and the fourth bevel gear is slidably connected to the output shaft.

[0011] Further, a second gear is arranged on the output shaft. A second motor is arranged on the housing. A first gear is arranged at the movable end of the second motor. The first gear meshes with the second gear.

[0012] Further, a first adjusting plate and a second adjusting plate are respectively provided on the first vibrating plate and the second vibrating plate. Third through holes and fourth through holes are respectively provided on the first adjusting plate and the second adjusting plate. The third through hole and the first through hole, and the fourth through hole and the second through hole are combined to form a first sieve hole and a second sieve hole. A second cylinder and a third cylinder are respectively provided on the first vibrating plate and the second vibrating plate. The movable ends of the second cylinder and the third cylinder are respectively connected to the first adjusting plate and the second adjusting plate.

[0013] Further, a fourth cylinder is provided on the housing. The movable end of the fourth cylinder is connected to the push plate. Link rods are symmetrically and rotatably connected to the push plate. The end parts of the two link rods are respectively connected to the first vibrating plate and the second vibrating plate.

[0014] A method for using a crushing device for pyrite production includes the following steps: S1. The pyrite enters the housing from the feed inlet and falls into the crushing chamber of the upper pair-roll crushing mechanism. The first crushing roll and the second crushing roll are driven to rotate simultaneously by the first gear. The pyrite is squeezed and crushed under the action of the extrusion force and shear force generated by the relative rotation of the two rolls. S2. The pyrite after primary crushing first falls on the first vibrating plate. The first vibrating plate is driven to reciprocate on the housing by the push plate, so that the pyrite after primary crushing shakes up and down on the first vibrating plate and gradually moves to one side. The pyrite that does not meet the size requirements falls out of the housing through the return port provided on one side of the housing and falls onto the conveyor belt, where it is mixed with other uncrushed pyrite and undergoes primary crushing again until the size after primary crushing meets the requirements. S3. The pyrite that meets the size requirements after primary crushing gradually passes through the first through hole on the first vibrating plate and falls onto the second vibrating plate. The second vibrating plate is driven to reciprocate by the push plate, so that the pyrite screened by the first vibrating plate shakes back and forth on the second vibrating plate and gradually gathers in the middle and falls into the crushing chamber of the lower pair-roll crushing mechanism. Similarly, secondary crushing of the pyrite is achieved. S4. During the shaking process of the second vibrating plate, the pyrite that meets the discharge size can directly pass through the second through hole provided on the second vibrating plate and fall to the bottom of the housing, and is discharged from the discharge port together with the pyrite after secondary crushing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Pyrite enters the shell through the feed inlet and falls into the crushing chamber of the pair-roll crushing mechanism located above. The first crushing roll and the second crushing roll are driven to rotate simultaneously by the first gear. Under the extrusion force and shear force generated by the relative rotation of the two rolls, the pyrite is extruded and crushed, thus realizing the primary crushing of pyrite. After primary crushing, the pyrite first falls on the first vibrating plate. The first vibrating plate is driven by the push plate to swing reciprocally on the shell, causing the pyrite after primary crushing to vibrate up and down on the first vibrating plate and gradually move to one side. The pyrite that does not meet the size requirements falls out of the shell through the return port provided on one side of the shell and onto the conveyor belt, where it is mixed with other uncrushed pyrite and crushed again until the size after primary crushing meets the requirements, avoiding the pyrite that does not meet the size requirements after crushing from entering the next process, thereby improving the quality of the crushed pyrite; 2. The pyrite that meets the size requirements after primary crushing gradually passes through the first through holes on the first vibrating plate and falls onto the second vibrating plate. The second vibrating plate is driven by the push plate to swing reciprocally, causing the pyrite screened by the first vibrating plate to vibrate reciprocally on the second vibrating plate and gradually gather in the middle and fall into the crushing chamber of the pair-roll crushing mechanism located below. Similarly, the pyrite is secondarily crushed, thereby improving the quality of the crushed pyrite and further improving the quality of the subsequent industrial sulfuric acid production; In addition, during the vibration of the second vibrating plate, the pyrite that meets the discharge size can directly pass through the second through holes provided on the second vibrating plate and fall to the bottom of the shell, and is discharged from the discharge port together with the pyrite after secondary crushing, thus avoiding the pyrite powder that meets the size requirements from being crushed multiple times, thereby reducing the working burden of the pair-roll crushing mechanism located below and improving the efficiency of crushing pyrite. In addition, due to the continuous inclined vibration of the first vibrating plate and the second vibrating plate, the first vibrating plate and the second vibrating plate exert an upward oblique thrust on the pyrite, preventing the pyrite from bouncing up and down on the first vibrating plate or the second vibrating plate and staying on the first vibrating plate for a long time, thereby improving the efficiency of screening pyrite and further improving the efficiency of crushing pyrite; 3. Drive the connecting key to slide on the drive shaft through the first cylinder until the limiting plate provided on the drive wheel contacts the end face of the uppermost first guide post. At this time, the connecting key provided on one side of the drive wheel slides out of the keyway, so that the drive wheel no longer drives the third screw and the fourth screw to rotate; through the cooperation among the first motor, the drive shaft, the drive wheel, and the limiting plate, the restriction on the rotation of the driven wheel on the housing is released. Then, through the cooperation among the second guide post, the first guide post, the driven wheel, the housing, the first screw, the second screw, the first slide plate, the second slide plate, the third screw, and the fourth screw, the first crushing roller and the second crushing roller of the upper and lower pair-roll crushing mechanisms move on the housing simultaneously, so as to adjust the distance between the first crushing roller and the second crushing roller provided on the two pair-roll crushing mechanisms simultaneously, change the size of the discharged material of the pulverizing device, meet the requirements under different conditions for manufacturing industrial sulfuric acid, and further improve the quality of the manufactured industrial sulfuric acid; at the same time, there is no need to separately set multiple power devices to drive the first crushing roller and the second crushing roller to move respectively, thereby reducing the space required for installing the power devices and the cost required for manufacturing. 4. When the first slide plate and the second slide plate drive the third screw and the fourth screw to move respectively, since the spline shafts provided at the ends of the third screw and the fourth screw are slidably connected to the spline sleeves, the third screw and the fourth screw will not drive the two spline sleeves to move on the housing, so as to ensure that the third bevel gear is always in mesh with the first bevel gear and the second bevel gear, thereby improving the stability of the overall structure, ensuring that the distance between the first crushing roller and the second crushing roller on the upper side can be normally adjusted subsequently, meeting the pulverizing requirements of pyrite under different conditions, improving the pulverizing effect of pyrite, and further improving the production quality of industrial sulfuric acid; in addition, after the drive wheel drives the driven wheel to rotate, the limiting plate will contact the end of the first guide post again, so as to restrict the external force from driving the driven wheel to rotate on the housing, further preventing the external force from inadvertently changing the distance between the first crushing roller and the second crushing roller and affecting the pulverizing effect of pyrite, and further improving the production quality of industrial sulfuric acid. 5. Drive the drive wheel to move upward through the first cylinder, so that the second guide post provided on the drive wheel slides out of several first guide posts, and the drive wheel no longer drives the first screw and the second screw to rotate. At this time, the connecting key enters the keyway, and the resistance generated after the two come into contact makes the drive wheel drive the connecting shaft to rotate. Through the cooperation among the first motor, the drive wheel, the connecting shaft, the housing, the third bevel gear, the first bevel gear, the second bevel gear, the spline sleeve, the third screw, the fourth screw, and the spline shaft, drive the third screw and the fourth screw to rotate. Since the third screw and the fourth screw are respectively threadedly connected to the first crushing roller on the upper side and the second crushing roller on the upper side, drive the first crushing roller on the upper side and the second crushing roller on the upper side to move respectively, so as to separately change the distance between the first crushing roller and the second crushing roller of the upper pair-roll crushing mechanism, meet the pulverizing requirements of pyrite under different conditions, improve the pulverizing effect of pyrite, and further improve the production quality of industrial sulfuric acid. 6. When crushing pyrite, through the cooperation among the second motor, the first gear, the second gear, the output shaft, the fourth conical tooth and the fifth conical tooth, the first crushing roll and the second crushing roll are driven to rotate simultaneously, providing power for the crushing of pyrite. At the same time, there is no need to separately control the rotation of the first crushing roll and the second crushing roll, thereby reducing the programming difficulty of controlling the opening and closing of the power device, as well as the space required for the installation of the power device and the cost required for manufacturing; In addition, when adjusting the distance between the first crushing roll and the second crushing roll, the first bearing block and the second bearing block will be driven to slide on the transverse groove, and at the same time, the movable plate will be driven to slide on the housing. Since the fourth conical tooth is rotatably arranged on the movable plate through a bearing, and at the same time the fourth conical tooth is slidably connected to the output shaft, the position of the fourth conical tooth on the housing is adjusted together, so that the fourth conical tooth is always meshed with the corresponding fifth conical tooth, thereby ensuring the stability of the overall structure, improving the efficiency of crushing pyrite, and at the same time, there is no need to additionally set a power device to drive the movable plate to move on the housing, further reducing the space required for the installation of the power device and the cost required for manufacturing; 7. Through the cooperation among the fourth cylinder, the push plate, the connecting rod, the first vibrating plate and the second vibrating plate, the first vibrating plate and the second vibrating plate are driven to swing reciprocally on the housing at the same time. Cooperating with the first sieve holes and the second sieve holes, the screening of pyrite is realized. At the same time, there is no need to separately drive the first vibrating plate and the second vibrating plate to swing, reducing the space required for the installation of the power device and the cost required for manufacturing; The first adjusting plate and the second adjusting plate are respectively driven by the second cylinder and the third cylinder to slide on the first vibrating plate and the second vibrating plate, thereby changing the overlapping part between the third through hole and the first through hole, and between the fourth through hole and the second through hole, changing the sizes of the first sieve holes and the second sieve holes, meeting the screening of pyrite with different particle sizes, and further improving the quality of the subsequent industrial sulfuric acid manufacturing. Description of the Drawings

[0016] Att Figure 1 is a schematic structural view of the housing of the present invention.

[0017] Att Figure 2 is a schematic structural view of the cooperation between the first vibrating plate and the second vibrating plate of the present invention.

[0018] Att Figure 3 is the present invention Att Figure 2 is a cross-sectional view taken along the A-A direction in

[0019] Att Figure 4 is the present invention Att Figure 3 is a cross-sectional view taken along the B-B direction in

[0020] Att Figure 5 is a schematic structural view of the shock-absorbing block of the present invention.

[0021] Att Figure 6 is the present invention AttFigure 4 Partial enlarged view of part C

[0022] Appended Figure 7 is a schematic structural view of the drive wheel of the present invention

[0023] Appended Figure 8 is a schematic structural view of the movable plate of the present invention

[0024] Appended Figure 9 is a schematic structural view of the push plate of the present invention

[0025] Reference numerals shown in the appended drawings 1. housing; 2. feed inlet; 3. discharge outlet; 4. transverse groove; 5. first bearing seat; 6. second bearing seat; 7. first crushing roller; 8. second crushing roller; 9. shock-absorbing block; 10. crushing chamber; 11. drive wheel; 12. first gear; 13. first vibrating plate; 14. second vibrating plate; 15. first through hole; 16. second through hole; 17. push plate; 18. return material port 19. first sliding plate; 20. second sliding plate; 21. first screw; 22. second screw; 23. third screw; 24. fourth screw; 25. driven wheel; 26. first guide post; 27. second guide post; 28. limiting plate; 29. spline shaft; 30. spline sleeve; 31. first bevel gear; 32. second bevel gear; 33. connecting shaft; 34. drive shaft; 35. third bevel gear; 36. keyway; 37. connecting key; 38. first motor; 39. first cylinder 40. movable plate; 41. fourth bevel gear; 42. fifth bevel gear; 43. output shaft; 44. second gear; 45. second motor 46. first adjusting plate; 47. second adjusting plate; 48. third through hole; 49. fourth through hole; 50. second cylinder; 51. third cylinder; 52. fourth cylinder; 53. connecting rod Specific embodiments

[0026] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by this application

[0027] The present invention provides a crushing device for pyrite production, such as Figures 1 - 5As shown in the figure, it includes a housing 1, two sets of double-roll crushing mechanisms arranged on the housing 1, and a screening mechanism arranged between the two sets of double-roll crushing mechanisms. The top and bottom of the housing 1 are respectively provided with a feed inlet 2 and a discharge outlet 3. The double-roll crushing mechanism includes transverse grooves 4 symmetrically arranged on both sides of the housing 1. A first bearing block 5 and a second bearing block 6 are slidably connected to the transverse grooves 4. A first crushing roll 7 and a second crushing roll 8 are respectively rotatably connected between the two first bearing blocks 5 and between the two second bearing blocks 6. A shock-absorbing block 9 is respectively arranged between the first crushing roll 7 and the first bearing block 5 and between the second crushing roll 8 and the second bearing block 6. On the one hand, the shock-absorbing block 9 absorbs the vibration generated during the operation of the first crushing roll 7 and the second crushing roll 8, avoids the loosening of the connection structure, improves the stability of the overall structure, and reduces the cost required for maintenance. On the other hand, the first crushing roll 7 and the second crushing roll 8 can move slightly inward, enabling the pyrite that is difficult to break to smoothly pass through the crushing chamber 10, avoiding hard collisions between the two, resulting in damage to the first crushing roll 7 and the second crushing roll 8, and further improving the service life of the first crushing roll 7 and the second crushing roll 8. A crushing chamber 10 is formed between the first crushing roll 7 and the second crushing roll 8. It also includes a driving wheel 11 that simultaneously drives the first bearing block 5 and the second bearing block 6 to slide on the transverse groove 4, and a first gear 12 that simultaneously drives the first crushing roll 7 and the second crushing roll 8 to rotate on the first bearing block 5 and the second bearing block 6 respectively. The screening mechanism includes a first vibrating plate 13 and a second vibrating plate 14 arranged obliquely. First through holes 15 and second through holes 16 are respectively arranged on the first vibrating plate 13 and the second vibrating plate 14. It also includes a push plate 17 that drives the first vibrating plate 13 and the second vibrating plate 14 to swing reciprocally on the housing 1. Return ports 18 that cooperate with the first vibrating plate 13 are respectively arranged on both sides of the housing 1. The first vibrating plate 13 is arranged below one of the crushing chambers 10, and the second vibrating plate 14 is arranged above the other crushing chamber 10. Pyrite enters the housing 1 from the feed inlet 2 and falls into the crushing chamber 10 of the upper double-roll crushing mechanism. The first gear 12 simultaneously drives the first crushing roll 7 and the second crushing roll 8 to rotate. The pyrite is extruded and broken under the action of the extrusion force and shear force generated by the relative rotation of the two rolls, thereby realizing the primary crushing of the pyrite. The pyrite after primary crushing first falls on the first vibrating plate 13. The push plate 17 drives the first vibrating plate 13 to swing reciprocally on the housing 1, causing the pyrite after primary crushing to vibrate up and down on the first vibrating plate 13 and gradually move to one side, so that the pyrite that does not meet the size requirements falls out of the housing 1 through the return port 18 provided on one side of the housing 1 and falls onto the conveyor belt, where it is mixed with other uncrushed pyrite and undergoes primary crushing again until the size after primary crushing meets the requirements, avoiding the pyrite that does not meet the size requirements after crushing from entering the next process, thereby improving the quality of the crushed pyrite. The pyrite that meets the requirements after primary crushing gradually passes through the first through hole 15 on the first vibrating plate 13 and falls onto the second vibrating plate 14. The second vibrating plate 14 is driven by the push plate 17 to swing reciprocally, causing the pyrite screened by the first vibrating plate 13 to vibrate reciprocally on the second vibrating plate 14 and gradually gather in the middle and fall into the crushing chamber 10 of the pair-roll crushing mechanism below. Similarly, the pyrite is secondarily crushed, thereby improving the quality of the crushed pyrite and further improving the quality of the subsequent industrial sulfuric acid production; In addition, during the vibration of the second vibrating plate 14, the pyrite that meets the discharge size can directly pass through the second through hole 16 provided on the second vibrating plate 14 and fall to the bottom of the housing 1, and is discharged from the discharge port 3 together with the pyrite after secondary crushing. This avoids the pyrite powder that meets the requirements from being crushed multiple times, thereby reducing the working burden of the pair-roll crushing mechanism below and improving the efficiency of crushing pyrite. In addition, due to the continuous inclined vibration of the first vibrating plate 13 and the second vibrating plate 14, the first vibrating plate 13 and the second vibrating plate 14 exert an upward oblique thrust on the pyrite, preventing the pyrite from bouncing up and down on the first vibrating plate 13 or the second vibrating plate 14 and staying on the first vibrating plate 13 for a long time, thereby improving the efficiency of screening pyrite and further improving the efficiency of crushing pyrite.

[0028] Preferably, as Figure 4As shown, it further includes a first sliding plate 19 and a second sliding plate 20 slidably arranged on one side of the housing 1. On the housing 1, a first screw rod 21 and a second screw rod 22 rotatably connected to the first sliding plate 19 are respectively arranged. One side of the first sliding plate 19 and the second sliding plate 20 are respectively connected to one of the first bearing seats 5 and one of the second bearing seats 6. On the other side of the first sliding plate 19 and the second sliding plate 20, a third screw rod 23 and a fourth screw rod 24 are respectively arranged. The third screw rod 23 and the fourth screw rod 24 are respectively threadedly connected to the other first bearing seat 5 and the other second bearing seat 6. The driving wheel 11 drives the first screw rod 21, the second screw rod 22, the third screw rod 23 and the fourth screw rod 24 to rotate respectively. When it is necessary to simultaneously adjust the distance between the first crushing roller 7 and the second crushing roller 8 provided on the two pair-roller crushing mechanisms, the driving shaft 34 drives the first screw rod 21 and the second screw rod 22 to rotate on the housing 1 respectively. Since the first sliding plate 19 and the second sliding plate 20 are respectively threadedly connected to the first screw rod 21 and the second screw rod 22, the first sliding plate 19 and the second sliding plate 20 are driven to slide on the housing 1. The component forces are transmitted through the third screw rod 23 and the fourth screw rod 24. At the same time, the first sliding plate 19 is connected to the first crushing roller 7 and the second crushing roller 8 of the pair-roller crushing mechanism located on the lower side, so that the first crushing roller 7 and the second crushing roller 8 of the pair-roller crushing mechanisms located on the upper side and the lower side move on the housing 1 simultaneously, thereby simultaneously adjusting the distance between the first crushing roller 7 and the second crushing roller 8 provided on the two pair-roller crushing mechanisms, changing the size of the discharged material of the crushing device, meeting the requirements under different conditions for manufacturing industrial sulfuric acid, and further improving the quality of the manufactured industrial sulfuric acid; at the same time, there is no need to separately set multiple power devices to drive the first crushing roller 7 and the second crushing roller 8 to move respectively, thereby reducing the space required for installing the power devices and the cost required for manufacturing; in addition, the driving wheel 11 drives the third screw rod 23 and the fourth screw rod 24 to rotate. Since the third screw rod 23 and the fourth screw rod 24 are respectively threadedly connected to the first crushing roller 7 located on the upper side and the second crushing roller 8 located on the upper side, the first crushing roller 7 located on the upper side and the second crushing roller 8 located on the upper side are respectively driven to move, thereby separately changing the distance between the first crushing roller 7 and the second crushing roller 8 of the pair-roller crushing mechanism on the upper side, meeting the crushing requirements of pyrite under different conditions, improving the effect of crushing pyrite, and further improving the production quality of industrial sulfuric acid.

[0029] Preferably, as Figure 4 and Figure 7As shown in the figure, it further includes driven wheels 25 arranged at the ends of the first screw rod 21 and the second screw rod 22. A number of first guide posts 26 are arranged on the side surface of the driven wheel 25. A number of second guide posts 27 are respectively arranged on the left and right sides of the driving wheel 11. A number of limiting plates 28 are respectively arranged on the upper and lower sides of the driving wheel 11. The second guide posts 27 are sequentially in contact with the corresponding first guide posts 26 and drive the driven wheel 25 to rotate on the housing 1. The limiting plates 28 are in contact with the end surfaces of the first guide posts 26 and limit the rotation of the driven wheel 25 on the housing 1. When it is necessary to simultaneously adjust the distance between the first crushing roller 7 and the second crushing roller 8 provided on the two pair-roller crushing mechanisms, by rotating the driving wheel 11 on the housing 1, the limiting plate 28 moves and is no longer in contact with the end of the first guide post 26, releasing the restriction on the rotation of the driven wheel 25 on the housing 1. Then, through the sequential contact of a number of second guide posts 27 with the first guide posts 26, the two driven wheels 25 are simultaneously driven to rotate on the housing 1, thereby respectively driving the first screw rod 21 and the second screw rod 22 to rotate on the housing 1. Since the first sliding plate 19 and the second sliding plate 20 are respectively threadedly connected to the first screw rod 21 and the second screw rod 22, the first sliding plate 19 and the second sliding plate 20 are driven to slide on the housing 1. The component forces are transmitted through the third screw rod 23 and the fourth screw rod 24. At the same time, the first sliding plate 19 is connected to the first crushing roller 7 and the second crushing roller 8 of the pair-roller crushing mechanism located on the lower side, so that the first crushing roller 7 and the second crushing roller 8 of the pair-roller crushing mechanisms located on the upper side and the lower side move simultaneously on the housing 1, thereby simultaneously adjusting the distance between the first crushing roller 7 and the second crushing roller 8 provided on the two pair-roller crushing mechanisms, changing the size of the discharged material of the pulverizing device, meeting the requirements under different conditions for manufacturing industrial sulfuric acid, and further improving the quality of the manufactured industrial sulfuric acid; at the same time, there is no need to separately set multiple power devices to respectively drive the first crushing roller 7 and the second crushing roller 8 to move, thereby reducing the space required for installing the power devices and the cost required for manufacturing; in addition, after the driving wheel 11 drives the driven wheel 25 to rotate, the limiting plate 28 will be in contact with the end of the first guide post 26 again, thereby restricting the rotation of the driven wheel 25 on the housing 1 by an external force, further preventing the external force from inadvertently changing the distance between the first crushing roller 7 and the second crushing roller 8 and affecting the effect of crushing pyrite, and further improving the production quality of industrial sulfuric acid.

[0030] Preferably, as Figure 4 、 Figure 6 and Figure 7As shown, spline shafts 29 are respectively provided at the end portions of the third screw rod 23 and the fourth screw rod 24. Spline sleeves 30 are symmetrically and rotatably connected to the housing 1. One ends of the two spline sleeves 30 are respectively slidably connected to the spline shafts 29. First bevel gears 31 and second bevel gears 32 are respectively provided at the other ends of the two spline sleeves 30. Further included are a connecting shaft 33 and a driving shaft 34 rotatably arranged on the housing 1. A third bevel gear 35 that meshes with both the first bevel gear 31 and the second bevel gear 32 is provided at one end of the connecting shaft 33. A keyway 36 is provided at the other end of the connecting shaft 33. The driving wheel 11 is key-connected to the driving shaft 34 and slidably arranged on the driving shaft 34. A connecting key 37 that is slidably connected to the keyway 36 is provided on one side of the driving wheel 11. When it is necessary to separately change the distance between the first crushing roller 7 and the second crushing roller 8 of the upper pair-roller crushing mechanism, the driving wheel 11 is driven to move upward by the first air cylinder 39, so that the second guide posts 27 provided on the driving wheel 11 slide out from a plurality of first guide posts 26, and the driving wheel 11 no longer drives the first screw rod 21 and the second screw rod 22 to rotate. At this time, the connecting key 37 enters into the keyway 36, and the resistance generated after the two come into contact causes the driving wheel 11 to drive the connecting shaft 33 to rotate. When the driving wheel 11 is driven to rotate by the first motor 38, the generated torque drives the connecting shaft 33 to rotate on the housing 1. Since the third bevel gear 35 provided on the connecting shaft 33 meshes with both the first bevel gear 31 and the second bevel gear 32, the two spline sleeves 30 are simultaneously driven to rotate on the housing 1. Since the two spline sleeves 30 are respectively slidably connected to the spline shafts 29 provided at the ends of the third screw rod 23 and the fourth screw rod 24, the third screw rod 23 and the fourth screw rod 24 are driven to rotate. Since the third screw rod 23 and the fourth screw rod 24 are respectively threadedly connected to the first crushing roller 7 on the upper side and the second crushing roller 8 on the upper side, the first crushing roller 7 on the upper side and the second crushing roller 8 on the upper side are respectively driven to move, thereby separately changing the distance between the first crushing roller 7 and the second crushing roller 8 of the upper pair-roller crushing mechanism, meeting the crushing requirements of pyrite under different conditions, improving the effect of crushing pyrite, and further improving the production quality of industrial sulfuric acid. In addition, when the first slide plate 19 and the second slide plate 20 drive the third screw rod 23 and the fourth screw rod 24 to move respectively, since the spline shafts 29 provided at the ends of the third screw rod 23 and the fourth screw rod 24 are slidably connected to the spline sleeves 30, the third screw rod 23 and the fourth screw rod 24 do not drive the two spline sleeves 30 to move on the housing 1, so as to ensure that the third bevel gear 35 is always in mesh with the first bevel gear 31 and the second bevel gear 32, thereby improving the stability of the overall structure, ensuring that the distance between the first crushing roller 7 and the second crushing roller 8 on the upper side can be normally adjusted subsequently, meeting the crushing requirements of pyrite under different conditions, improving the effect of crushing pyrite, and further improving the production quality of industrial sulfuric acid.

[0031] Preferably, as Figure 6 andFigure 7 As shown in the figure, a first motor 38 is provided on the housing 1, and the movable end of the first motor 38 is connected to the drive shaft 34 to provide power for the first bearing block 5 and the second bearing block 6 to slide on the transverse groove 4; a first cylinder 39 is provided on the connecting shaft 33, and the movable end of the first cylinder 39 is connected to the drive wheel 11 to provide power for the drive wheel 11 to slide on the drive shaft 34.

[0032] Preferably, as Figure 1 and Figure 8 shown, movable plates 40 slidably connected to the housing 1 are respectively provided on the first bearing block 5 and the second bearing block 6. A fourth bevel gear 41 is rotatably connected to the movable plate 40. Fifth bevel gears 42 meshing with the fourth bevel gear 41 are respectively provided at both ends of the first crushing roll 7 and the second crushing roll 8. An output shaft 43 is provided on the housing 1. Both ends of the output shaft 43 are key-connected to the fourth bevel gear 41, and the fourth bevel gear 41 is slidably connected to the output shaft 43. When pyrite needs to be crushed, the output shaft 43 is rotated on the housing 1. Since both ends of the output shaft 43 are respectively key-connected to the corresponding fourth bevel gears 41, the torque of the output shaft 43 is transmitted to the fourth bevel gear 41 through the key, driving it to rotate on the movable plate 40. At the same time, since the fifth bevel gears 42 provided at both ends of the first crushing roll 7 and the second crushing roll 8 respectively mesh with the corresponding fourth bevel gears 41, the first crushing roll 7 and the second crushing roll 8 are simultaneously driven to rotate, providing power for crushing pyrite. At the same time, there is no need to separately control the rotation of the first crushing roll 7 and the second crushing roll 8, thereby reducing the programming difficulty of controlling the opening and closing of the power device, as well as reducing the space required for installing the power device and the cost required for manufacturing. In addition, when adjusting the distance between the first crushing roll 7 and the second crushing roll 8, the first bearing block 5 and the second bearing block 6 will be driven to slide on the transverse groove 4, and at the same time, the movable plate 40 will be driven to slide on the housing 1. Since the fourth bevel gear 41 is rotatably arranged on the movable plate 40 through a bearing, and the fourth bevel gear 41 is slidably connected to the output shaft 43, the position of the fourth bevel gear 41 on the housing 1 is adjusted together, so that the fourth bevel gear 41 always meshes with the corresponding fifth bevel gear 42, thereby ensuring the stability of the overall structure, improving the efficiency of crushing pyrite, and at the same time, there is no need to additionally set a power device to drive the movable plate 40 to move on the housing 1, further reducing the space required for installing the power device and the cost required for manufacturing.

[0033] Preferably, as Figure 1 and Figure 8 shown, a second gear 44 is provided on the output shaft 43, a second motor 45 is provided on the housing 1, the first gear 12 is arranged at the movable end of the second motor 45, and the first gear 12 meshes with the second gear 44 to provide power for the first crushing roll 7 and the second crushing roll 8 to rotate on the housing 1.

[0034] Preferably, as Figure 2 shown, a first adjusting plate 46 and a second adjusting plate 47 are respectively provided on the first vibrating plate 13 and the second vibrating plate 14. Third through holes 48 and fourth through holes 49 are respectively provided on the first adjusting plate 46 and the second adjusting plate 47. The third through holes 48 and the first through holes 15, and the fourth through holes 49 and the second through holes 16 are combined to form a first sieve hole and a second sieve hole. A second cylinder 50 and a third cylinder 51 are respectively provided on the first vibrating plate 13 and the second vibrating plate 14. The movable ends of the second cylinder 50 and the third cylinder 51 are respectively connected to the first adjusting plate 46 and the second adjusting plate 47. By continuously reciprocating and telescoping the fourth cylinder 52, the push plate 17 is driven to reciprocate on the housing 1. Since the two ends of the two connecting rods 53 are respectively rotationally connected to the push plate 17 and the first vibrating plate 13, and the push plate 17 and the second vibrating plate 14, the first vibrating plate 13 and the second vibrating plate 14 are simultaneously driven to reciprocate and swing on the housing 1. Cooperating with the first sieve hole and the second sieve hole, the screening of pyrite is realized. At the same time, there is no need to separately drive the first vibrating plate 13 and the second vibrating plate 14 to swing, reducing the space required for the installation of the power device and the cost required for manufacturing.

[0035] Preferably, as Figure 2 , Figure 3 and Figure 9 shown, a fourth cylinder 52 is provided on the housing 1. The movable end of the fourth cylinder 52 is connected to the push plate 17. The push plate 17 is symmetrically rotationally connected with connecting rods 53. The ends of the two connecting rods 53 are respectively connected to the first vibrating plate 13 and the second vibrating plate 14. By respectively driving the first adjusting plate 46 and the second adjusting plate 47 to slide on the first vibrating plate 13 and the second vibrating plate 14 through the second cylinder 50 and the third cylinder 51, the overlapping part between the third through holes 48 and the first through holes 15, and the fourth through holes 49 and the second through holes 16 is changed, and the sizes of the first sieve hole and the second sieve hole are changed to meet the screening of pyrite with different particle sizes, thereby improving the quality of subsequent industrial sulfuric acid production.

[0036] A method for using a crushing device for pyrite production, as Figures 1 - 5 shown, includes the following steps: S1. The pyrite enters the housing 1 from the feed port 2 and falls into the crushing chamber 10 of the upper pair of roller crushing mechanisms. By simultaneously driving the first crushing roller 7 and the second crushing roller 8 to rotate through the first gear 12, the pyrite is extruded and crushed under the action of the extrusion force and shear force generated by the relative rotation of the two rollers, thereby realizing the primary crushing of the pyrite; S2. The pyrite after primary crushing first falls onto the first vibrating plate 13. The push plate 17 drives the first vibrating plate 13 to reciprocally swing on the housing 1, causing the pyrite after primary crushing to jitter up and down on the first vibrating plate 13 and gradually move to one side. The pyrite that does not meet the size requirements falls out of the outside world through the return material port 18 provided on one side of the housing 1 and falls onto the conveyor belt, where it is mixed with other uncrushed pyrite and undergoes primary crushing again until the size after primary crushing meets the requirements, avoiding the pyrite that does not meet the size requirements after crushing from entering the next process, thereby improving the quality of the crushed pyrite. S3. The pyrite that meets the size requirements after primary crushing gradually passes through the first through hole 15 on the first vibrating plate 13 and falls onto the second vibrating plate 14. The push plate 17 drives the second vibrating plate 14 to reciprocally swing, causing the pyrite screened by the first vibrating plate 13 to jitter reciprocally on the second vibrating plate 14 and gradually gather in the middle and fall into the crushing chamber 10 of the pair-roll crushing mechanism located below. Similarly, the pyrite is secondarily crushed, thereby improving the quality of the crushed pyrite and further improving the quality of the subsequent industrial sulfuric acid production. S4. During the jittering process of the second vibrating plate 14, the pyrite that meets the discharge size can directly pass through the second through hole 16 provided on the second vibrating plate 14 and fall to the bottom of the housing 1, and is discharged from the discharge port 3 together with the pyrite after secondary crushing, thereby avoiding the pyrite powder that meets the size requirements from being crushed multiple times, further reducing the working burden of the pair-roll crushing mechanism located below, and improving the efficiency of crushing pyrite. In addition, due to the continuous tilting and jittering of the first vibrating plate 13 and the second vibrating plate 14, the first vibrating plate 13 and the second vibrating plate 14 exert an obliquely upward thrust on the pyrite, preventing the pyrite from bouncing up and down on the first vibrating plate 13 or the second vibrating plate 14 and staying on the first vibrating plate 13 for a long time, thereby improving the efficiency of screening pyrite and further improving the efficiency of crushing pyrite.

[0037] Example 1 The present invention provides a crushing device and an operation method for pyrite production, as Figures 1 - 5As shown, pyrite enters the housing 1 through the feed inlet 2 and falls into the crushing chamber 10 of the pair-roll crushing mechanism located above. The first crushing roll 7 and the second crushing roll 8 are driven to rotate simultaneously by the first gear 12. Under the extrusion force and shear force generated by the relative rotation of the two rolls, the pyrite is extruded and crushed, thus achieving the primary crushing of pyrite. After the primary crushing, the pyrite first falls on the first vibrating plate 13. The first vibrating plate 13 is driven by the push plate 17 to reciprocate on the housing 1, causing the pyrite after the primary crushing to vibrate up and down on the first vibrating plate 13 and gradually move to one side. The pyrite that does not meet the size requirements falls out of the housing 1 through the return port 18 provided on one side and onto the conveyor belt, where it is mixed with other uncrushed pyrite and crushed again until the size after the primary crushing meets the requirements, avoiding the pyrite that does not meet the size requirements after crushing from entering the next process, thereby improving the quality of the crushed pyrite; The pyrite that meets the size requirements after the primary crushing gradually passes through the first through hole 15 on the first vibrating plate 13 and falls onto the second vibrating plate 14. The second vibrating plate 14 is driven by the push plate 17 to reciprocate, causing the pyrite screened by the first vibrating plate 13 to vibrate back and forth on the second vibrating plate 14 and gradually gather in the middle and fall into the crushing chamber 10 of the pair-roll crushing mechanism located below. Similarly, the pyrite is secondarily crushed, thereby improving the quality of the crushed pyrite and further improving the quality of the subsequent industrial sulfuric acid production; In addition, during the vibration of the second vibrating plate 14, the pyrite that meets the discharge size can directly pass through the second through hole 16 provided on the second vibrating plate 14 and fall to the bottom of the housing 1, and is discharged from the discharge port 3 together with the pyrite after the secondary crushing. This avoids the pyrite powder that meets the size requirements from being crushed multiple times, thereby reducing the working burden of the pair-roll crushing mechanism located below and improving the efficiency of crushing pyrite. In addition, due to the continuous tilting vibration of the first vibrating plate 13 and the second vibrating plate 14, the first vibrating plate 13 and the second vibrating plate 14 exert an upward oblique thrust on the pyrite, preventing the pyrite from bouncing up and down on the first vibrating plate 13 or the second vibrating plate 14 and staying on the first vibrating plate 13 for a long time, thereby improving the efficiency of screening pyrite and further improving the efficiency of crushing pyrite.

[0038] Example 2 On the basis of Example 1, as Figure 4 、 Figure 6 and Figure 7As shown in the figure, when it is necessary to adjust the distance between the first crushing roller 7 and the second crushing roller 8 provided on the two counter-rotating roller crushing mechanisms at the same time, the first air cylinder 39 drives the connecting key 37 to slide on the driving shaft 34 until the limiting plate 28 provided on the driving wheel 11 contacts the end face of the uppermost first guide post 26. At this time, the connecting key 37 provided on one side of the driving wheel 11 slides out of the key groove 36, so that the driving wheel 11 no longer drives the third screw 23 and the fourth screw 24 to rotate; the driving shaft 34 is driven to rotate by the first motor 38, and the generated torque drives the driving wheel 11 to rotate, so that the limiting plate 28 moves and no longer contacts the end of the first guide post 26, releasing the restriction on the rotation of the driven wheel 25 on the housing 1. Then, several second guide posts 27 contact the first guide post 26 in turn, and at the same time drive the two driven wheels 25 to rotate on the housing 1, thereby respectively driving the first screw 21 and the second screw 22 to rotate on the housing 1. Since the first sliding plate 19 and the second sliding plate 20 are respectively threadedly connected to the first screw 21 and the second screw 22, the first sliding plate 19 and the second sliding plate 20 are driven to slide on the housing 1. The component force is transmitted through the third screw 23 and the fourth screw 24. At the same time, the first sliding plate 19 is connected to the first crushing roller 7 and the second crushing roller 8 of the lower counter-rotating roller crushing mechanism, so that the first crushing roller 7 and the second crushing roller 8 of the upper and lower counter-rotating roller crushing mechanisms move on the housing 1 at the same time, thereby adjusting the distance between the first crushing roller 7 and the second crushing roller 8 provided on the two counter-rotating roller crushing mechanisms at the same time, changing the size of the discharged material of the crushing device, meeting the requirements in different situations of manufacturing industrial sulfuric acid, and further improving the quality of the manufactured industrial sulfuric acid; at the same time, there is no need to separately set multiple power devices to drive the first crushing roller 7 and the second crushing roller 8 to move respectively, thereby reducing the space required for installing the power device and the cost required for manufacturing; in addition, when the first sliding plate 19 and the second sliding plate 20 drive the third screw 23 and the fourth screw 24 to move respectively, since the spline shafts 29 provided at the ends of the third screw 23 and the fourth screw 24 are slidably connected to the spline sleeves 30, the third screw 23 and the fourth screw 24 will not drive the two spline sleeves 30 to move on the housing 1, so as to ensure that the third bevel gear 35 is always engaged with the first bevel gear 31 and the second bevel gear 32, thereby improving the stability of the overall structure, ensuring that the distance between the upper first crushing roller 7 and the second crushing roller 8 can be normally adjusted in subsequent operations, meeting the crushing requirements of pyrite in different situations, improving the effect of crushing pyrite, and further improving the production quality of industrial sulfuric acid; in addition, after the driving wheel 11 drives the driven wheel 25 to rotate, the limiting plate 28 will contact the end of the first guide post 26 again, thereby restricting the external force to drive the driven wheel 25 to rotate on the housing 1, further preventing the external force from inadvertently changing the distance between the first crushing roller 7 and the second crushing roller 8 and affecting the effect of crushing pyrite, and further improving the production quality of industrial sulfuric acid; When it is necessary to separately change the spacing between the first crushing roller 7 and the second crushing roller 8 of the upper pair-roller crushing mechanism, the driving wheel 11 is driven upward by the first cylinder 39, so that the second guide post 27 provided on the driving wheel 11 slides out from a plurality of first guide posts 26, so that the driving wheel 11 no longer drives the first screw rod 21 and the second screw rod 22 to rotate. At this time, the connecting key 37 enters the keyway 36, and the resistance generated after the two come into contact causes the driving wheel 11 to drive the connecting shaft 33 to rotate. When the driving wheel 11 is driven to rotate by the first motor 38, the generated torque drives the connecting shaft 33 to rotate on the housing 1. Since the third conical tooth 35 provided on the connecting shaft 33 meshes with the first conical tooth 31 and the second conical tooth 32 at the same time, the two spline sleeves 30 are driven to rotate on the housing 1 at the same time. Since the two spline sleeves 30 are respectively slidably connected to the spline shafts 29 provided at the ends of the third screw rod 23 and the fourth screw rod 24, the third screw rod 23 and the fourth screw rod 24 are driven to rotate. Since the third screw rod 23 and the fourth screw rod 24 are respectively threadedly connected to the first crushing roller 7 on the upper side and the second crushing roller 8 on the upper side, the first crushing roller 7 on the upper side and the second crushing roller 8 on the upper side are respectively driven to move, thereby separately changing the spacing between the first crushing roller 7 and the second crushing roller 8 of the upper pair-roller crushing mechanism, meeting the crushing requirements of pyrite under different conditions, improving the crushing effect of pyrite, and further improving the production quality of industrial sulfuric acid.

[0039] Embodiment 3 On the basis of Embodiment 1, as Figure 1 and Figure 8 shown, when crushing pyrite, the first gear 12 is driven to rotate by the second motor 45, and the torque is transmitted through the second gear 44 to drive the output shaft 43 to rotate on the housing 1. Since the two ends of the output shaft 43 are respectively key-connected to the corresponding fourth conical teeth 41, the torque of the output shaft 43 is transmitted to the fourth conical teeth 41 through the key, driving it to rotate on the movable plate 40. At the same time, since the fifth conical teeth 42 provided at the two ends of the first crushing roller 7 and the second crushing roller 8 respectively mesh with the corresponding fourth conical teeth 41, the first crushing roller 7 and the second crushing roller 8 are driven to rotate at the same time, providing power for pyrite crushing. At the same time, there is no need to separately control the rotation of the first crushing roller 7 and the second crushing roller 8, thereby reducing the programming difficulty of controlling the opening and closing of the power device, as well as reducing the space required for installing the power device and the cost required for manufacturing; In addition, when adjusting the distance between the first crushing roller 7 and the second crushing roller 8, the first bearing block 5 and the second bearing block 6 will be driven to slide on the transverse groove 4, and at the same time, the movable plate 40 will be driven to slide on the housing 1. Since the fourth bevel gear 41 is rotatably arranged on the movable plate 40 through a bearing, and at the same time the fourth bevel gear 41 is slidably connected to the output shaft 43, the position of the fourth bevel gear 41 on the housing 1 is adjusted together, so that the fourth bevel gear 41 is always engaged with the corresponding fifth bevel gear 42, thereby ensuring the stability of the overall structure, improving the efficiency of crushing pyrite, and at the same time, there is no need to additionally set a power device to drive the movable plate 40 to move on the housing 1, further reducing the space required for installing the power device and the cost required for manufacturing.

[0040] Embodiment 4 On the basis of Embodiment 1, as Figure 2 and Figure 9 shown, when it is necessary to screen the crushed pyrite, the fourth cylinder 52 continuously reciprocates and extends, driving the push plate 17 to reciprocate on the housing 1. Since the two ends of the two connecting rods 53 are respectively rotatably connected to the push plate 17 and the first vibrating plate 13, and the push plate 17 and the second vibrating plate 14, the first vibrating plate 13 and the second vibrating plate 14 are simultaneously driven to reciprocally swing on the housing 1, and in cooperation with the first sieve holes and the second sieve holes, the screening of pyrite is realized. At the same time, there is no need to separately drive the first vibrating plate 13 and the second vibrating plate 14 to swing, reducing the space required for installing the power device and the cost required for manufacturing; When it is necessary to adjust the sizes of the first sieve holes and the second sieve holes, the first adjusting plate 46 and the second adjusting plate 47 are respectively driven by the second cylinder 50 and the third cylinder 51 to slide on the first vibrating plate 13 and the second vibrating plate 14, thereby changing the overlapping parts between the third through holes 48 and the first through holes 15, and the fourth through holes 49 and the second through holes 16, changing the sizes of the first sieve holes and the second sieve holes, meeting the screening of pyrite with different particle sizes, and further improving the quality of subsequent industrial sulfuric acid production.

Claims

1. A crushing device for pyrite production, comprising a housing (1), two sets of pair-roll crushing mechanisms arranged on the housing (1), and a screening mechanism arranged between the two sets of pair-roll crushing mechanisms, characterized in that: The top and bottom of the housing (1) are respectively provided with a feed inlet (2) and a discharge outlet (3). The pair-roll crushing mechanism includes transverse grooves (4) symmetrically arranged on both sides of the housing (1). A first bearing block (5) and a second bearing block (6) are slidably connected to the transverse grooves (4). A first crushing roll (7) and a second crushing roll (8) are respectively rotatably connected between the two first bearing blocks (5) and between the two second bearing blocks (6). Shock-absorbing blocks (9) are respectively arranged between the first crushing roll (7) and the first bearing block (5), and between the second crushing roll (8) and the second bearing block (6). A crushing chamber (10) is formed between the first crushing roll (7) and the second crushing roll (8). It further includes a driving wheel (11) for simultaneously driving the first bearing block (5) and the second bearing block (6) to slide on the transverse grooves (4), and a first gear (12) for simultaneously driving the first crushing roll (7) and the second crushing roll (8) to rotate on the first bearing block (5) and the second bearing block (6) respectively; The screening mechanism includes a first vibrating plate (13) and a second vibrating plate (14) arranged obliquely. First through holes (15) and second through holes (16) are respectively arranged on the first vibrating plate (13) and the second vibrating plate (14). It further includes a push plate (17) for driving the first vibrating plate (13) and the second vibrating plate (14) to swing reciprocally on the housing (1). Return ports (18) for cooperating with the first vibrating plate (13) are respectively arranged on both sides of the housing (1). The first vibrating plate (13) is arranged below one of the crushing chambers (10), and the second vibrating plate (14) is arranged above the other crushing chamber (10).

2. A crushing device for pyrite production according to claim 1, characterized in that: It further includes a first sliding plate (19) and a second sliding plate (20) slidably arranged on one side of the housing (1). A first screw rod (21) and a second screw rod (22) rotatably connected to the housing (1) and slidably connected to the first sliding plate (19) are respectively arranged. One side of the first sliding plate (19) and the second sliding plate (20) are respectively connected to one of the first bearing blocks (5) and one of the second bearing blocks (6). Third screw rods (23) and fourth screw rods (24) are respectively arranged on the other sides of the first sliding plate (19) and the second sliding plate (20). The third screw rods (23) and the fourth screw rods (24) are respectively threadedly connected to the other first bearing block (5) and the other second bearing block (6). The driving wheel (11) drives the first screw rod (21), the second screw rod (22), the third screw rod (23) and the fourth screw rod (24) to rotate respectively.

3. The crushing device for pyrite production according to claim 2, wherein: It further includes driven wheels (25) arranged at the ends of the first screw rod (21) and the second screw rod (22). A number of first guide posts (26) are arranged on the side surfaces of the driven wheels (25). A number of second guide posts (27) are respectively arranged on the left and right sides of the driving wheel (11). A number of limiting plates (28) are respectively arranged on the upper and lower sides of the driving wheel (11). The second guide posts (27) are sequentially in contact with the corresponding first guide posts (26) and drive the driven wheels (25) to rotate on the housing (1). The limiting plates (28) are in contact with the end faces of the first guide posts (26) and limit the rotation of the driven wheels (25) on the housing (1).

4. A crushing device for pyrite production according to claim 3, characterized in that: Spline shafts (29) are respectively arranged at the ends of the third screw rod (23) and the fourth screw rod (24). Spline sleeves (30) are symmetrically and rotatably connected to the housing (1). One ends of the two spline sleeves (30) are respectively slidably connected to the spline shafts (29). First bevel gears (31) and second bevel gears (32) are respectively arranged at the other ends of the two spline sleeves (30). It further includes a connecting shaft (33) and a driving shaft (34) rotatably arranged on the housing (1). A third bevel gear (35) that meshes with both the first bevel gear (31) and the second bevel gear (32) is arranged at one end of the connecting shaft (33). A key groove (36) is arranged at the other end of the connecting shaft (33). The driving wheel (11) is key-connected to the driving shaft (34) and slidably arranged on the driving shaft (34). A connecting key (37) that is slidably connected to the key groove (36) is arranged on one side of the driving wheel (11).

5. A crushing device for pyrite production according to claim 4, characterized in that: A first motor (38) is arranged on the housing (1). The movable end of the first motor (38) is connected to the driving shaft (34). A first air cylinder (39) is arranged on the connecting shaft (33). The movable end of the first air cylinder (39) is connected to the driving wheel (11).

6. A crushing device for pyrite production according to claim 1, characterized in that: Movable plates (40) that are slidably connected to the housing (1) are respectively arranged on the first bearing seat (5) and the second bearing seat (6). A fourth bevel gear (41) is rotatably connected to the movable plate (40). Fifth bevel gears (42) that mesh with the fourth bevel gear (41) are respectively arranged at both ends of the first crushing roller (7) and the second crushing roller (8). An output shaft (43) is arranged on the housing (1). Both ends of the output shaft (43) are respectively key-connected to the fourth bevel gear (41) and the fourth bevel gear (41) is slidably connected to the output shaft (43).

7. A crushing device for pyrite production according to claim 6, characterized in that: A second gear (44) is arranged on the output shaft (43). A second motor (45) is arranged on the housing (1). The first gear (12) is arranged at the movable end of the second motor (45). The first gear (12) meshes with the second gear (44).

8. A crushing device for pyrite production according to claim 1, characterized in that: The first vibrating plate (13) and the second vibrating plate (14) are respectively provided with a first adjusting plate (46) and a second adjusting plate (47). The first adjusting plate (46) and the second adjusting plate (47) are respectively provided with a third through hole (48) and a fourth through hole (49). The third through hole (48) and the first through hole (15), the fourth through hole (49) and the second through hole (16) form a first sieve hole and a second sieve hole. The first vibrating plate (13) and the second vibrating plate (14) are respectively provided with a second cylinder (50) and a third cylinder (51). The movable ends of the second cylinder (50) and the third cylinder (51) are respectively connected to the first adjusting plate (46) and the second adjusting plate (47).

9. A crushing device for pyrite production according to claim 1, characterized in that: The housing (1) is provided with a fourth cylinder (52). The movable end of the fourth cylinder (52) is connected to a push plate (17). The push plate (17) is symmetrically and rotatably connected with a connecting rod (53). The end parts of the two connecting rods (53) are respectively connected to the first vibrating plate (13) and the second vibrating plate (14).

10. The usage method of a crushing device for pyrite production according to claim 1, characterized in that: It includes the following steps: S1. Pyrite enters the housing (1) from the feed inlet (2) and falls into the crushing chamber (10) of the upper pair-roller crushing mechanism. The first crushing roller (7) and the second crushing roller (8) are driven to rotate simultaneously by the first gear (12). The pyrite is extruded and crushed under the action of the extrusion force and shear force generated by the relative rotation of the two rollers. S2. The pyrite after primary crushing first falls on the first vibrating plate (13). The first vibrating plate (13) is driven to reciprocate on the housing (1) by the push plate (17), so that the pyrite after primary crushing shakes up and down on the first vibrating plate (13) and gradually moves to one side. The pyrite that does not meet the size requirements falls out of the housing (1) through the return material port (18) provided on one side and falls onto the conveyor belt, so that it is mixed with other uncrushed pyrite and undergoes primary crushing again until the size after primary crushing meets the requirements. S3. The pyrite that meets the size requirements after primary crushing gradually passes through the first through hole (15) on the first vibrating plate (13) and falls onto the second vibrating plate (14). The second vibrating plate (14) is driven to reciprocate by the push plate (17), so that the pyrite screened by the first vibrating plate (13) shakes back and forth on the second vibrating plate (14) and gradually gathers in the middle and falls into the crushing chamber (10) of the lower pair-roller crushing mechanism. Similarly, secondary crushing of the pyrite is achieved. S4. During the shaking process of the second vibrating plate (14), the pyrite that meets the discharge size can directly pass through the second through hole (16) provided on the second vibrating plate (14) and fall to the bottom of the housing (1), and is discharged from the discharge port (3) together with the pyrite after secondary crushing.

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