Pulverizer for processing calcined petroleum coke

Abstract

The invention relates to the technical field of petroleum coke crushing, and provides a crusher for calcined petroleum coke processing, the crusher comprises a support frame, the rear side surface of the support frame is fixedly connected with a feeding barrel, the upper surface of the feeding barrel is fixedly connected with a feeding pipe, and the rear side surface of the feeding barrel is rotatably connected with a screw rod; a long transmission rod is fixedly connected to the outer surface of the lead screw, an inner screen drum is fixedly connected to the end, away from the lead screw, of the long transmission rod, a short transmission rod is fixedly connected to the outer surface of the inner screen drum, an outer screen drum is fixedly connected to the end, away from the inner screen drum, of the short transmission rod, and a limiting sleeve is fixedly connected to the outer surface of the lead screw. By means of the technical scheme, the petroleum coke screening device solves the problems that in the prior art, petroleum coke is prone to being clamped on a screen in the conveying and screening process, blockage is caused, the screening efficiency is low, the device is prone to being damaged, and the overall working efficiency is affected.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum coke pulverization, and in particular to a pulverizer used for processing calcined petroleum coke. Background Art

[0002] Petroleum coke is a very important industrial product, and its uses are very wide. For example, it can be used to make carbon products, such as graphite electrodes, anode arcs, for steelmaking, non-ferrous metals, and aluminum smelting, to make silicon carbide products, such as various grinding wheels, sandpaper, and sandpaper; to make commercial calcium carbide for the production of synthetic fibers, acetylene and other products; it can also be used as fuel. In the processing process of petroleum coke, a calcination process is generally included, that is, calcination is carried out in a calcination tank at high temperature to obtain the required petroleum coke products. However, after calcination, petroleum coke blocks of different particle sizes are generally formed. Too large petroleum coke is not conducive to later use. Therefore, it is necessary to use a crusher to crush large pieces of petroleum coke. At the same time, large pieces of petroleum coke need to be screened out before crushing. However, the existing screening device has low screening efficiency. The petroleum coke is easily stuck on the screen during the transportation and screening process, causing blockage, resulting in low screening efficiency, and the device is easily damaged, affecting the overall work efficiency. Summary of the invention

[0003] The present invention provides a pulverizer for processing calcined petroleum coke, which solves the problem of a pulverizer for processing calcined petroleum coke in the related art.

[0004] The technical solution of the present invention is as follows: a pulverizer for processing calcined petroleum coke comprises a support frame, the rear side surface of the support frame is fixedly connected to a feed barrel, the upper surface of the feed barrel is fixedly connected to a feed pipe, the rear side surface of the feed barrel is rotatably connected to a screw rod, the outer surface of the screw rod is fixedly connected to a long transmission rod, the end of the long transmission rod away from the screw rod is fixedly connected to an inner screen cylinder, the outer surface of the inner screen cylinder is fixedly connected to a short transmission rod, the end of the short transmission rod away from the inner screen cylinder is fixedly connected to an outer screen cylinder, the outer surface of the screw rod is fixedly connected to a limiting sleeve, the outer surface of the screw rod is movably connected to a movable sleeve shaft, the outer surface of the movable sleeve shaft is fixedly connected to a limited stirring plate, the limited stirring plate The front side of the plate is fixedly connected to a pushing paddle, and the front side of the support frame is provided with a spreading device for evenly spreading the material to prevent the petroleum coke from being blocked and accumulated, the front side of the support frame is provided with a crushing box and a crushing roller for crushing the petroleum coke, and the front side of the support frame is provided with a recovery and discharge device for recovering the petroleum coke with unqualified crushing particle size, a motor is installed at the rear end of the screw rod, and the motor and the rear side of the feed barrel are fixedly connected by a connecting plate, the outer screen cylinder is movably connected to the inner wall of the support frame, the movable sleeve shaft is slidably connected to the inner wall of the limiting sleeve, the outer surface of the limiting sleeve is provided with four sliding grooves, and the outer surface of the movable sleeve shaft is provided with four limiting stirring plates in a circular array, and the four limiting stirring plates are respectively connected to the four sliding grooves. The inner surface of the groove is slidably connected, and the crushing roller is rotatably connected to the inner wall of the crushing box. A motor is installed at the rear end of the crushing roller, and the motor is fixedly connected to the rear side of the crushing box through a connecting plate. The petroleum coke is sent into the feeding barrel through the feeding pipe, and the motor is started. The motor drives the screw rod to rotate, and the screw rod drives the transmission long rod, the inner screen cylinder, the transmission short rod, and the outer screen cylinder to rotate. When the petroleum coke is full in the feeding barrel, it will fall into the inner screen cylinder. At this time, the petroleum coke with medium particle size that can be directly used and the petroleum coke with too small particle size that cannot be used fall into the outer screen cylinder through the sieve holes opened on the inner screen cylinder, while the petroleum coke with too large particle size stays in the inner screen cylinder, and then the petroleum coke with too small particle size that cannot be used falls out of the outer screen cylinder through the sieve holes opened on the outer screen cylinder. , while the petroleum coke with medium particle size that can be directly used stays between the inner screen drum and the outer screen drum, thereby realizing the screening of petroleum coke of different sizes. The centrifugal force generated when the inner and outer screen drums rotate makes the petroleum coke inside them shake, and the rotation of the screw drives the movable sleeve to move back and forth, and the movable sleeve drives the limit stirring plate to move back and forth, and the limit stirring plate drives the pushing paddle to move back and forth, and the inclined surface of the pushing paddle can push the petroleum coke staying in the inner screen drum into the crushing box, and the rotation of the screw drives the limit sleeve to rotate, and the limit sleeve clamps and limits the limit stirring plate through the slide groove, so that when the limit sleeve rotates, it can drive the limit stirring plate to rotate, and the limit stirring plate stirs the petroleum coke in the inner screen drum to separate the petroleum coke more.

[0005] The cam is connected to the upper and lower surfaces of the L-shaped push rod, and the upper and lower surfaces of the L-shaped push rod are connected to the upper and lower surfaces of the L-shaped push rod. The two plates are slidably connected, and a spring is arranged between the fixed plate and the sliding plate, and the front and rear ends of the spring are fixedly connected to the fixed plate and the sliding plate respectively. When the petroleum coke to be crushed enters the crushing box from the inner screen drum, the petroleum coke can accurately fall between the two crushing rollers through the obstruction and guidance of the arc-shaped baffle plate. When the movable sleeve shaft moves forward horizontally, it drives the L-shaped push rod and the push block to move forward and hold the first push plate. When the push block continues to move forward, it drives the first push plate forward. The first push plate then drives the second push plate forward through the connecting plate. When the first push plate and the second push plate move forward, they drive the sliding plate to slide forward. When the L-shaped push rod and the push block move backward, the first push plate loses the resistance between the L-shaped push rod and the push block. At this time, the elastic action of the spring causes the sliding plate to drive the first push plate and the second push plate to reset, thereby making the first push plate and the second push plate move reciprocatingly. When the first push plate and the second push plate move reciprocatingly, the petroleum coke that is accumulated too high can be flattened.

[0006] According to the above technical scheme, the recycling and discharging device includes a feeding frame, a screening inclined plate, and a cover plate. The feeding frame is fixedly connected to the lower surface of the bottom of the crushing box, the screening inclined plate is arranged inside the feeding frame, and the cover plate is hinged to the right side of the feeding frame. The recycling and discharging device also includes a trapezoidal baffle, a supporting slide plate, an L-shaped transmission plate, and a side plate. The trapezoidal baffle is fixedly connected to the front and rear sides of the screening inclined plate, the supporting slide plate is fixedly connected to the front and rear sides of the trapezoidal baffle, the L-shaped transmission plate is fixedly connected to the left end of the sliding plate, and the side plate is fixedly connected to the left side of the screening inclined plate. The supporting slide plate slides through the front and rear sides of the top of the feeding frame, and a slide groove is provided on the left side of the feeding frame, and the L-shaped transmission plate is slidably connected to the inner surface of the slide groove. A spring is arranged between the trapezoidal baffle and the front and rear surfaces of the inner wall of the discharge frame, and the front and rear ends of the spring are fixedly connected to the discharge frame and the trapezoidal baffle respectively, and the L-shaped transmission plate is fixedly connected to the left side of the side plate. The crushed petroleum coke falls into the discharge frame from the crushing box, part of the petroleum coke falls onto the screen inclined plate, and part of the petroleum coke is blocked by the supporting slide and then falls onto the screen inclined plate. The petroleum coke with just the right crushing size falls from the screen inclined plate, and the petroleum coke with too large a size and low crushing degree stays on the screen inclined plate. When the first push plate reciprocates, it drives the L-shaped transmission plate to slide reciprocatingly, and the L-shaped transmission plate drives the screen inclined plate, the trapezoidal baffle and the supporting slide to slide reciprocatingly. When the trapezoidal baffle reciprocates, it squeezes the spring, thereby enhancing the inertia generated by its reciprocating movement.

[0007] The working principle and beneficial effects of the present invention are: 1. In the present invention, petroleum coke is fed into a feed barrel through a feed pipe, and a motor is started. The motor drives a lead screw to rotate, and the lead screw drives a transmission long rod, an inner screen drum, a transmission short rod, and an outer screen drum to rotate. The centrifugal force generated when the inner screen drum and the outer screen drum rotate causes the petroleum coke inside to shake, and the shaking petroleum coke can fall out of the screen hole more quickly, thereby preventing the petroleum coke from being stuck in the screen hole, thereby improving the screening efficiency of the petroleum coke, and further improving the processing efficiency. The inclined surface of the pushing paddle can push the petroleum coke remaining in the inner screen drum into the crushing box, thereby preventing the petroleum coke in the inner screen drum from being discharged too slowly and piling up to cause blockage and affect subsequent processing, thereby improving the discharge and processing efficiency. The limiting stirring plate stirs the petroleum coke in the inner screen drum to separate the petroleum coke more. When the interval between the petroleum cokes becomes larger, the petroleum coke with a small particle size will not be sandwiched between the petroleum coke with a large particle size, thereby being more easily screened out, thereby improving the screening efficiency.

[0008] 2. In the present invention, the centrifugal force generated when the inner screen drum and the outer screen drum rotate causes the petroleum coke to vibrate, thereby making the petroleum coke screening efficiency higher. The rotation of the screw drives the movable sleeve shaft to move back and forth, and the movable sleeve shaft drives the limit stirring plate to move back and forth. The limit stirring plate then drives the push paddle to move back and forth. The inclined surface of the push paddle can push the petroleum coke out, preventing the petroleum coke from being blocked in the inner screen drum and affecting subsequent processing, thereby improving the processing efficiency.

[0009] 3. In the present invention, the rotation of the screw drives the limit sleeve to rotate, and the limit sleeve clamps and limits the limit stirring plate through the slide groove, so that the limit sleeve can drive the limit stirring plate to rotate when it rotates. When the limit stirring plate rotates, the petroleum coke in the inner screen drum is stirred, so that petroleum cokes of different sizes are quickly separated, and petroleum cokes with small particle sizes will not be easily screened out, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 A half-section view of the outer screen drum structure of the present invention; Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part; Figure 5 It is a schematic diagram of the rear side cross-sectional three-dimensional structure of the paving device of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of B; Figure 7 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the recovery and discharging device of the present invention.

[0012] In the figure: 1. support frame; 2. feed barrel; 3. feed pipe; 4. screw rod; 41. transmission long rod; 42. inner screen drum; 43. transmission short rod; 44. outer screen drum; 45. limit sleeve; 46. movable sleeve shaft; 47. limit stirring plate; 48. push paddle; 5. crushing box; 6. crushing roller; 7. material spreading device; 71. arc baffle plate; 72. L-shaped push rod; 73. push block; 74. first push plate; 75. connecting plate; 76. second push plate; 77. fixed plate; 78. sliding plate; 8. material recovery and discharging device; 81. unloading frame; 82. screen material inclined plate; 83. cover plate; 84. trapezoidal baffle plate; 85. support slide plate; 86. L-shaped transmission plate; 87. side plate. DETAILED DESCRIPTION

[0013] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] Example 1 like Figure 1 to Figure 4 As shown, this embodiment proposes a pulverizer for processing calcined petroleum coke, including a support frame 1, a feed barrel 2 is fixedly connected to the rear side of the support frame 1, a feed pipe 3 is fixedly connected to the upper surface of the feed barrel 2, a screw rod 4 is rotatably connected to the rear side of the feed barrel 2, a transmission long rod 41 is fixedly connected to the outer surface of the screw rod 4, an inner screen drum 42 is fixedly connected to the end of the transmission long rod 41 away from the screw rod 4, a transmission short rod 43 is fixedly connected to the outer surface of the inner screen drum 42, an outer end of the transmission short rod 43 away from the inner screen drum 42 is fixedly connected to the outer screen drum 44, and a limiting sleeve 4 is fixedly connected to the outer surface of the screw rod 4 5. The outer surface of the screw rod 4 is movably connected with a movable sleeve shaft 46, and the outer surface of the movable sleeve shaft 46 is fixedly connected with a limited stirring plate 47. The front side of the limited stirring plate 47 is fixedly connected with a pushing paddle 48. The centrifugal force generated when the inner and outer screen drums rotate causes the petroleum coke inside to vibrate, and the vibrating petroleum coke can fall out of the sieve holes more quickly, avoiding the situation where the petroleum coke is stuck in the sieve holes, thereby improving the screening efficiency of the petroleum coke and further improving the processing efficiency. The front side of the support frame 1 is provided with a spreading device 7 for evenly spreading the material to prevent the petroleum coke from clogging and accumulating. The front side of the support frame 1 is provided with a A crushing box 5 and a crushing roller 6 for crushing petroleum coke, a recovery and discharging device 8 for recovering petroleum coke with unqualified crushing particle size is arranged on the front side of the support frame 1, and the inclined surface of the pushing paddle can push the petroleum coke staying in the inner screen drum into the crushing box, avoiding the petroleum coke in the inner screen drum from being discharged too slowly and piling up to cause blockage and affect subsequent processing, thereby improving the discharging and processing efficiency, a motor is installed at the rear end of the screw rod 4, and the motor and the rear side of the feed barrel 2 are fixedly connected by a connecting plate, the outer screen drum 44 is movably connected to the inner wall of the support frame 1, the movable sleeve shaft 46 is slidably connected to the inner wall of the limit sleeve 45, and the limit Four slide grooves are provided on the outer surface of the sleeve 45, and four limit stirring plates 47 are provided in a circular array on the outer surface of the movable sleeve shaft 46. The four limit stirring plates 47 are respectively slidably connected to the inner surfaces of the four slide grooves. The crushing roller 6 is rotatably connected to the inner wall of the crushing box 5. A motor is installed at the rear end of the crushing roller 6, and the motor is fixedly connected to the rear side of the crushing box 5 through a connecting plate. The limit stirring plates stir the petroleum coke in the inner screen drum to separate the petroleum coke more. When the interval between the petroleum cokes becomes larger, the petroleum coke with small particle size will not be sandwiched between the petroleum coke with large particle size, and thus it will be more easily screened out, thereby improving the screening efficiency.

[0015] In this embodiment, petroleum coke is fed into the feed barrel 2 through the feed pipe 3, and the motor is started. The motor drives the screw rod 4 to rotate, and the screw rod 4 drives the transmission long rod 41, the inner screen drum 42, the transmission short rod 43, and the outer screen drum 44 to rotate. When the petroleum coke is full in the feed barrel 2, it falls into the inner screen drum 42. At this time, the petroleum coke with medium particle size that can be directly used and the petroleum coke with too small particle size that cannot be used fall into the outer screen drum 44 through the sieve holes opened on the inner screen drum 42, while the petroleum coke with too large particle size stays in the inner screen drum 42. The inner sieve 42 and the outer sieve 44 are used to sieve the petroleum coke, and the inner sieve 42 and the outer sieve 44 are used to sieve the petroleum coke. The discharge and processing efficiency is improved. The rotation of the screw rod 4 drives the limit sleeve 45 to rotate. The limit sleeve 45 clamps and limits the limit stirring plate 47 through the slide groove, so that when the limit sleeve 45 rotates, it can drive the limit stirring plate 47 to rotate. The limit stirring plate 47 stirs the petroleum coke in the inner screen drum 42 to separate the petroleum coke more. When the interval between the petroleum cokes becomes larger, the petroleum coke with a small particle size will not be sandwiched between the petroleum coke with a large particle size, and it is easier to be screened out, thereby improving the screening efficiency.

[0016] Example 2 like Figure 1 to Figure 7As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes a material spreading device 7, which includes an arc-shaped baffle plate 71, an L-shaped push rod 72, and a push block 73. The arc-shaped baffle plate 71 is fixedly connected to the inner wall of the crushing box 5, the L-shaped push rod 72 is fixedly connected to the surface of the movable sleeve shaft 46, and the push block 73 is fixedly connected to the front end of the L-shaped push rod 72. The material spreading device 7 also includes a first push plate 74, a connecting plate 75, a second push plate 76, a fixed plate 77, and a sliding plate 78. The first push plate 74 is slidably connected to the inner arc surface of the arc-shaped baffle plate 71, the connecting plate 75 is fixedly connected to the front side of the arc-shaped baffle plate 71, and the second push plate 76 is fixedly connected to the front side of the arc-shaped baffle plate 71. 6 is fixedly connected to the front end of the connecting plate 75, the fixed plate 77 is fixedly connected to both sides of the crushing box 5, the sliding plate 78 is fixedly connected to both ends of the first push plate 74, the L-shaped push rod 72 and the inner side of the slide groove opened on the surface of the limiting sleeve 45 are slidably connected, the top of the arc baffle 71 and the top of the crushing box 5 are both provided with slide grooves, the sliding plate 78 is slidably connected to the slide grooves opened on the arc baffle 71 and the crushing box 5 respectively, the second push plate 76 is slidably connected to the inner arc surface of the arc baffle 71, a spring is provided between the fixed plate 77 and the sliding plate 78, and the front and rear ends of the spring are fixedly connected to the fixed plate 77 and the sliding plate 78 respectively.

[0017] The recovery and discharging device 8 includes a material discharging frame 81, a screening material inclined plate 82, and a cover plate 83. The material discharging frame 81 is fixedly connected to the lower surface of the bottom of the crushing box 5, the screening material inclined plate 82 is arranged inside the material discharging frame 81, and the cover plate 83 is hinged on the right side of the material discharging frame 81. The recovery and discharging device 8 also includes a trapezoidal baffle 84, a supporting slide plate 85, an L-shaped transmission plate 86, and a side plate 87. The trapezoidal baffle 84 is fixedly connected to the front and rear sides of the screening material inclined plate 82, the supporting slide plate 85 is fixedly connected to the front and rear sides of the trapezoidal baffle 84, and the L-shaped transmission plate 86 is hinged to the right side of the material discharging frame 81. The movable plate 86 is fixedly connected to the left end of the sliding plate 78, the side plate 87 is fixedly connected to the left side of the screening inclined plate 82, the supporting slide plate 85 slides through the front and rear sides of the top of the unloading frame 81, a slide groove is opened on the left side of the unloading frame 81, and the L-shaped transmission plate 86 is slidably connected to the inner surface of the slide groove, a spring is arranged between the trapezoidal baffle plate 84 and the front and rear surfaces of the inner wall of the unloading frame 81, and the front and rear ends of the spring are respectively fixedly connected to the unloading frame 81 and the trapezoidal baffle plate 84, and the L-shaped transmission plate 86 is fixedly connected to the left side of the side plate 87.

[0018] In this embodiment, when the petroleum coke to be crushed enters the crushing box 5 from the inner screen drum 42, the petroleum coke can fall accurately between the two crushing rollers 6 through the obstruction and guidance of the arc-shaped baffle plate 71, so as to facilitate crushing. When the movable sleeve shaft 46 moves forward horizontally, it drives the L-shaped push rod 72 and the push block 73 to move forward to support the first push plate 74. When the push block 73 continues to move forward, it drives the first push plate 74 to move forward. The first push plate 74 then drives the second push plate 76 to move forward through the connecting plate 75. When the first push plate 74 and the second push plate 76 move forward, The sliding plate 78 is driven to slide forward. When the L-shaped push rod 72 and the push block 73 move backward, the first push plate 74 loses the interference of the L-shaped push rod 72 and the push block 73. At this time, the elastic action of the spring enables the sliding plate 78 to drive the first push plate 74 and the second push plate 76 to reset, thereby making the first push plate 74 and the second push plate 76 move back and forth. When the first push plate 74 and the second push plate 76 move back and forth, they can flatten the petroleum coke that is accumulated too high, so that the crushing roller 6 can crush the petroleum coke more efficiently, thereby improving the crushing efficiency.

[0019] The crushed petroleum coke falls from the crushing box 5 into the discharge frame 81, part of the petroleum coke falls onto the screen inclined plate 82, and part of the petroleum coke is blocked by the supporting slide 85 and then falls onto the screen inclined plate 82. The petroleum coke with just the right crushed particle size falls from the screen inclined plate 82, and the staff collects it for subsequent processing. The petroleum coke with too large particle size and low crushing degree stays on the screen inclined plate 82. At this time, the cover plate 83 is opened, and the petroleum coke on the screen inclined plate 82 will roll down through the inclined surface of the screen inclined plate 82. The staff can recycle it for secondary crushing, which is convenient for the staff to collect and improves the work efficiency. When the first push plate 74 moves back and forth, it drives the L-shaped transmission plate 86 to slide back and forth, and the L-shaped transmission plate 86 drives the screen inclined plate 82, the trapezoidal baffle 84 and the supporting slide 85 to slide back and forth. When the trapezoidal baffle 84 moves back and forth, it squeezes the spring, which enhances the inertia generated by its reciprocating movement, thereby causing the petroleum coke to shake and improving the discharge efficiency.

[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulverizer for processing calcined petroleum coke, characterized in that: The invention comprises a support frame (1), wherein the rear side surface of the support frame (1) is fixedly connected to a feed barrel (2), the upper surface of the feed barrel (2) is fixedly connected to a feed pipe (3), the rear side surface of the feed barrel (2) is rotatably connected to a screw rod (4), the outer surface of the screw rod (4) is fixedly connected to a transmission long rod (41), the end of the transmission long rod (41) away from the screw rod (4) is fixedly connected to an inner screen cylinder (42), the outer surface of the inner screen cylinder (42) is fixedly connected to a transmission short rod (43), the end of the transmission short rod (43) away from the inner screen cylinder (42) is fixedly connected to an outer screen cylinder (44), the outer surface of the screw rod (4) is fixedly connected to a limit sleeve (45), the outer surface of the screw rod (4) is movably connected to a movable sleeve shaft (46), the outer surface of the movable sleeve shaft (46) is fixedly connected to a limit stirring plate (47), and the front side of the limit stirring plate (47) is fixedly connected to a push paddle (48); The front side of the support frame (1) is provided with a spreading device (7) for evenly spreading the material to prevent the petroleum coke from clogging and piling up; the front side of the support frame (1) is provided with a crushing box (5) and a crushing roller (6) for crushing the petroleum coke; and the front side of the support frame (1) is provided with a recovery and discharge device (8) for recovering the petroleum coke with unqualified crushed particle size.

2. A pulverizer for calcined petroleum coke processing according to claim 1, characterized in that: A motor is installed at the rear end of the screw rod (4), and the motor and the rear side of the feed barrel (2) are fixedly connected via a connecting plate. The outer screen drum (44) is movably connected to the inner wall of the support frame (1). The movable sleeve shaft (46) and the inner wall of the limiting sleeve (45) are slidably connected. The outer surface of the limiting sleeve (45) is provided with four slide grooves, and the outer surface of the movable sleeve shaft (46) is provided with four limiting stirring plates (47) in a circular array. The four limiting stirring plates (47) are respectively slidably connected to the inner surfaces of the four slide grooves. The crushing roller (6) is rotatably connected to the inner wall of the crushing box (5). A motor is installed at the rear end of the crushing roller (6), and the motor is fixedly connected to the rear side of the crushing box (5) via a connecting plate.

3. A pulverizer for calcined petroleum coke processing according to claim 2, characterized in that: The material spreading device (7) comprises an arc-shaped baffle plate (71), an L-shaped push rod (72), and a push block (73); the arc-shaped baffle plate (71) is fixedly connected to the inner wall of the crushing box (5); the L-shaped push rod (72) is fixedly connected to the surface of the movable sleeve shaft (46); and the push block (73) is fixedly connected to the front end of the L-shaped push rod (72).

4. A pulverizer for calcined petroleum coke processing according to claim 3, characterized in that: The material spreading device (7) further comprises a first push plate (74), a connecting plate (75), a second push plate (76), a fixed plate (77), and a sliding plate (78); the first push plate (74) is slidably connected to the inner arc surface of the arc baffle (71); the connecting plate (75) is fixedly connected to the front side surface of the arc baffle (71); the second push plate (76) is fixedly connected to the front end of the connecting plate (75); the fixed plate (77) is fixedly connected to both sides of the crushing box (5); and the sliding plate (78) is fixedly connected to both ends of the first push plate (74).

5. A pulverizer for calcined petroleum coke processing according to claim 4, characterized in that: The L-shaped push rod (72) and the inner side surface of the slide groove provided on the surface of the limiting sleeve (45) are slidably connected, the top of the arc-shaped baffle plate (71) and the two sides of the top of the crushing box (5) are provided with slide grooves, the sliding plate (78) is slidably connected to the slide grooves provided on the arc-shaped baffle plate (71) and the crushing box (5), respectively, the second push plate (76) is slidably connected to the inner arc surface of the arc-shaped baffle plate (71), a spring is provided between the fixed plate (77) and the sliding plate (78), and the front and rear ends of the spring are fixedly connected to the fixed plate (77) and the sliding plate (78), respectively.

6. A pulverizer for calcined petroleum coke processing according to claim 5, characterized in that: The recycling and discharging device (8) comprises a material discharge frame (81), a screening inclined plate (82), and a cover plate (83); the material discharge frame (81) is fixedly connected to the lower surface of the bottom of the crushing box (5); the screening inclined plate (82) is arranged inside the material discharge frame (81); and the cover plate (83) is hinged to the right side of the material discharge frame (81).

7. A pulverizer for calcined petroleum coke processing according to claim 6, characterized in that: The recovery and discharging device (8) further comprises a trapezoidal baffle plate (84), a supporting slide plate (85), an L-shaped transmission plate (86), and a side plate (87); the trapezoidal baffle plate (84) is fixedly connected to the front and rear sides of the screening material inclined plate (82); the supporting slide plate (85) is fixedly connected to the front and rear sides of the trapezoidal baffle plate (84); the L-shaped transmission plate (86) is fixedly connected to the left end of the sliding plate (78); and the side plate (87) is fixedly connected to the left side of the screening material inclined plate (82).

8. A pulverizer for calcined petroleum coke processing according to claim 7, characterized in that: The support slide plate (85) slides through the front and rear sides of the top of the blanking frame (81); a slide groove is provided on the left side of the blanking frame (81); and an L-shaped transmission plate (86) is slidably connected to the inner surface of the slide groove; a spring is provided between the trapezoidal baffle plate (84) and the front and rear sides of the inner wall of the blanking frame (81); and the front and rear ends of the spring are respectively fixedly connected to the blanking frame (81) and the trapezoidal baffle plate (84); and the L-shaped transmission plate (86) is fixedly connected to the left side of the side plate (87).

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