A grinding device for petroleum coke

Abstract

The present invention relates to the field of petroleum coke powder processing, and in particular to a grinding device for petroleum coke. The present invention provides a grinding device for petroleum coke, which can separate petroleum coke powder that meets the fineness requirements, and can more fully crush and crush the petroleum coke, thereby improving the grinding efficiency of the petroleum coke powder. A grinding device for petroleum coke includes a shell, an upper cover, an induced draft fan, and a drive motor, etc.; the upper cover is arranged on the top of the shell, the induced draft fan is arranged on the upper cover, the induced draft fan is connected to the shell through the upper cover, and the drive motor is arranged at the lower part of the shell. The present invention rolls the petroleum coke attached to the inner wall of the outer wall tube through the rotation of the crushing roller, and the crushed petroleum coke will fall onto the rotating disk, and the self-rotation of the rotating roller will further crush the petroleum coke on the rotating disk. At the same time, the self-rotation of the rotating roller will throw the crushed petroleum coke onto the scraper, and then throw it along the inclined surface to the crushing roller behind, and the crushing roller will grind it again.

Description

Technical Field

[0001] The invention relates to the field of petroleum coke powder processing, and in particular to a grinding device for petroleum coke. Background Art

[0002] Petroleum coke is a product obtained by separating the light and heavy oils through distillation of crude oil and then subjecting the heavy oil to thermal cracking. The vacuum residue of petroleum is cracked and coked at 500-550 degrees Celsius in a coking unit to generate black solid coke. After crushing or grinding, it can be made into graphite, calcium carbide, or used as a raw material for carbon electrodes.

[0003] The production process of petroleum coke powder mainly involves crushing, grinding, drying, calcining and other processes. The petroleum coke obtained from petroleum coking is first put into a crusher for crushing and grinding. The petroleum coke powder after grinding needs to be classified into coarse and fine particle sizes by a classifier. The fine particles that meet the material requirements are sent to the finished product warehouse, and the coarse particles that do not meet the fineness requirements are sent back to the crusher for further processing until the expected fineness is reached.

[0004] When the current crusher crushes the petroleum coke, the petroleum coke powder is continuously introduced, and the un-crushed petroleum coke powder and the crushed petroleum coke powder are mixed together. This makes it difficult to fully crush the un-crushed petroleum coke powder, and it is also difficult to separate the petroleum coke powders with different crushing degrees. The petroleum coke in the crusher must be completely crushed before fine powder separation can be performed. This requires multiple crushings, resulting in low grinding efficiency of the petroleum coke powder. Summary of the invention

[0005] In view of this, the present invention provides a grinding device for petroleum coke, which can separate petroleum coke powder that meets the fineness requirements and can more fully crush the petroleum coke, thereby improving the grinding efficiency of the petroleum coke powder.

[0006] The technical solution is as follows: A grinding device for petroleum coke, comprising an outer shell, an upper cover, an induced draft fan, a driving motor, a rotating shaft, a filter cover, a grinding mechanism and a fine grinding mechanism, the outer shell being provided with a circular filter screen and having an inlet, the upper cover being fixedly connected to the top of the outer shell, the induced draft fan being fixedly connected to the upper cover, the induced draft fan being communicated with the outer shell through the upper cover, the driving motor being fixedly connected to the lower part of the outer shell, the rotating shaft being fixedly connected to the output shaft of the driving motor, the rotating shaft being rotatably connected to the circular filter screen of the outer shell, the filter cover being fixedly connected to the top end of the rotating shaft, the filter cover being rotatably connected to the inner wall of the outer shell, the grinding mechanism being arranged on the outer shell, and the fine grinding mechanism being arranged on the rotating shaft.

[0007] Furthermore, the grinding mechanism includes an outer wall tube, a rotating frame, a limit frame, a connecting spring and a crushing roller, the outer wall tube is fixedly connected to the lower part of the inner wall of the outer shell, the rotating frame is fixedly connected to the upper part of the rotating shaft, and a plurality of limit frames are slidably connected to the rotating frame, each of the limit frames is connected to the rotating frame with two connecting springs, each of the limit frames is rotatably connected to a crushing roller, and each of the crushing rollers is in contact with the inner wall of the outer wall tube.

[0008] Furthermore, the fine grinding mechanism includes a rotating disk, a scraper, a gear ring, a fixed plate, a rotating roller and a rotating gear. The rotating disk is fixedly connected to the rotating shaft, the rotating disk is rotatably connected to the outer shell, the rotating disk is rotatably connected to the outer wall tube, a plurality of scrapers are evenly spaced on the upper side of the rotating disk, the scrapers and the crushing rollers are staggered, each of the scrapers is provided with an inclined surface, the gear ring is fixedly connected to the inner bottom of the outer shell, a plurality of fixed plates are fixedly connected to the upper side of the rotating disk, two of the fixed plates form a group, each of the fixed plates is rotatably connected to a rotating roller, two of the rotating rollers form a group, each of the rotating rollers is fixedly connected to a rotating gear, and each of the rotating gears is meshed with the gear ring.

[0009] Furthermore, it also includes a vibration mechanism, which is arranged on the outer shell, and includes a cam ring, a vibration frame, a tension spring, a rubber pad and a toggle rod. The cam ring is fixedly connected to the inner wall of the outer shell, the cam ring is located below the filter cover, the rotating shaft passes through the cam ring, the vibration frame is slidably connected to the rotating frame, a plurality of tension springs are connected between the vibration frame and the rotating frame, a plurality of rubber pads are fixedly connected to the top of the vibration frame, and a plurality of toggle rods are fixedly connected to the vibration frame, and each of the toggle rods is in contact with the cam ring.

[0010] Furthermore, a plurality of trapezoidal protrusions are evenly spaced on the cam ring.

[0011] Furthermore, it also includes a toggle mechanism, which is arranged on the fine grinding mechanism, and the toggle mechanism includes a support frame, a rotating shaft, a driven gear, a bevel gear and a toggle frame, one of the fixed plates in each group is fixedly connected to the support frame, each of the support frames is rotatably connected to the rotating shaft, one end of each of the rotating shafts is fixedly connected to the driven gear, the driven gear is located above the rotating gear, and the rotating gear will mesh with the driven gear, each of the rotating shafts is fixedly connected to a bevel gear at one end away from the driven gear, each of the support frames is rotatably connected to a toggle frame, the toggle frame is located between a group of rotating rollers, and each of the toggle frames is also fixedly connected to a bevel gear, and the two bevel gears are meshed.

[0012] Furthermore, it also includes an inclined frame, which is fixedly connected to the inner bottom of the shell, the inclined frame is located above the circular filter screen of the shell, the inclined frame is in contact with the vibration frame, and the rotating shaft is rotatably connected to the inclined frame.

[0013] Furthermore, it also includes a guide frame and a square rod, wherein the guide frame is fixedly connected to the inner wall of the shell, the guide frame is in contact with the bottom of the filter cover, and a plurality of square rods are evenly spaced at the bottom of the filter cover.

[0014] The beneficial effects are:

[0015] 1. The present invention rolls and rolls the petroleum coke attached to the inner wall of the outer wall tube. The crushed petroleum coke will fall onto the rotating disk. The self-rotation of the rotating roller will further roll the petroleum coke on the rotating disk, thereby fully rolling the petroleum coke. At the same time, the self-rotation of the rotating roller will throw the rolled petroleum coke onto the scraper. The petroleum coke on the scraper will be thrown along the inclined surface onto the crushing roller at the rear, and will be rolled and ground again by the crushing roller, thereby fully rolling the petroleum coke in the outer shell and rolling the petroleum coke into powder.

[0016] 2. The present invention draws air in the casing through an induced draft fan, and the petroleum coke crushed into fine powder passes through the filter cover together with the air and is drawn out by the induced draft fan. The filter cover will filter out the petroleum coke that is not fully crushed, and the rotation of the filter cover will throw the filtered petroleum coke back to the rotating disk again, and the rotating roller will grind it into powder, so that the petroleum coke fine powder that meets the fine powder grade requirement can be separated, and the petroleum coke powder that does not meet the requirement will continue to be crushed and broken, thereby improving the crushing efficiency.

[0017] 3. The present invention rotates the toggle rod and is continuously squeezed by the cam ring, so that the vibration frame moves back and forth up and down. Under the elastic force of the tension spring, the reciprocating up and down movement of the vibration frame will vibrate the rotating frame, and then vibrate a plurality of crushing rollers, so that the petroleum coke attached to the outer wall of the crushing roller is shaken off and crushed by the rotating roller, thereby preventing a large amount of petroleum coke from sticking to the crushing roller and being unable to be crushed, thereby allowing the petroleum coke to fall and be ground, and at the same time, the crushing roller can more fully crush the petroleum coke on the inner wall of the outer wall tube, thereby more fully crushing the petroleum coke powder in the outer shell.

[0018] 4. The present invention drives the cam ring to rotate by rotating the rotating gear, and then drives the toggle frame to rotate. The rotation of the toggle frame will continuously toggle the petroleum coke powder between the two rotating rollers to prevent the petroleum coke powder from accumulating between the two rotating rollers, and at the same time allow more petroleum coke powder to be ground into between the rotating roller and the rotating disk, and crushed by the rotating roller, thereby more thoroughly crushing the petroleum coke powder and improving the grinding efficiency of the petroleum coke powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the first three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the grinding mechanism of the present invention.

[0023] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the grinding mechanism and the fine grinding mechanism of the present invention.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0025] Figure 7 It is a partial cross-sectional three-dimensional structural schematic diagram of the grinding mechanism, fine grinding mechanism and vibration mechanism of the present invention.

[0026] Figure 8 It is a schematic diagram of the partial structure of the vibration mechanism of the present invention.

[0027] Fig. 9 It is a partial three-dimensional structural schematic diagram of the fine grinding mechanism and the shifting mechanism of the present invention.

[0028] Fig.10 It is a partial three-dimensional structural schematic diagram of the fine grinding mechanism and the shifting mechanism of the present invention.

[0029] Fig.11 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the guide frame of the present invention.

[0031] In the accompanying drawings: 1-housing, 2-upper cover, 3-induced draft fan, 4-driving motor, 5-rotating shaft, 6-filter cover, 71-outer wall tube, 72-rotating frame, 73-limiting frame, 74-connecting spring, 75-crushing roller, 81-rotating disk, 82-shovel blade, 83-gear ring, 84-fixing plate, 85-rotating roller, 86-rotating gear, 91-cam ring, 92-vibration frame, 93-tension spring, 94-rubber cushion, 95-toggle rod, 101-support frame, 102-rotating shaft, 103-driven gear, 104-bevel gear, 105-toggle frame, 11-inclined frame, 121-guide frame, 122-square rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Example 1

[0034] A grinding device for petroleum coke, such as Figure 1-Figure 6 As shown, it includes a shell 1, an upper cover 2, an induced draft fan 3, a driving motor 4, a rotating shaft 5, a filter cover 6, a grinding mechanism and a fine grinding mechanism. The shell 1 is provided with a circular filter screen and has an inlet. The upper cover 2 is connected to the top of the shell 1 by bolts, the induced draft fan 3 is connected to the upper cover 2 by bolts, the induced draft fan 3 is communicated with the shell 1 through the upper cover 2, the driving motor 4 is connected to the lower part of the shell 1 by bolts, the rotating shaft 5 is fixedly connected to the output shaft of the driving motor 4, the rotating shaft 5 is vertically arranged, the rotating shaft 5 is rotatably connected to the circular filter screen of the shell 1, the filter cover 6 is connected to the top of the rotating shaft 5 by bolts, the filter cover 6 is rotatably connected to the inner wall of the shell 1, the grinding mechanism is arranged on the shell 1, and the fine grinding mechanism is arranged on the rotating shaft 5.

[0035] The grinding mechanism includes an outer wall tube 71, a rotating frame 72, a limit frame 73, a connecting spring 74 and a crushing roller 75. The outer wall tube 71 is connected to the lower part of the inner wall of the outer shell 1 by bolts, and the rotating frame 72 is fixedly connected to the upper part of the rotating shaft 5. A plurality of limit frames 73 are slidably connected to the rotating frame 72. Two connecting springs 74 are connected to each of the limit frames 73 and the rotating frame 72 through hooks. Each of the connecting springs 74 is sleeved on the rotating frame 72. Each of the limit frames 73 is rotatably connected to a crushing roller 75, and each of the crushing rollers 75 is in contact with the inner wall of the outer wall tube 71.

[0036] The fine grinding mechanism includes a rotating disk 81, a scraper 82, a gear ring 83, a fixed plate 84, a rotating roller 85 and a rotating gear 86. The rotating disk 81 is connected to the rotating shaft 5 by bolts. The rotating disk 81 is rotatably connected to the outer shell 1. The rotating disk 81 is rotatably connected to the outer wall tube 71. A plurality of scrapers 82 are evenly spaced on the upper side of the rotating disk 81. The scrapers 82 are staggered with the crushing roller 75. Each of the scrapers 82 is provided with an inclined surface. The gear ring 83 is connected to the inner bottom of the outer shell 1 by bolts. A plurality of fixed plates 84 are connected to the upper side of the rotating disk 81 by bolts. Two of the fixed plates 84 form a group. Each of the fixed plates 84 is rotatably connected to a rotating roller 85. Two of the rotating rollers 85 form a group. The rotating rollers 85 are in contact with the upper side of the rotating disk 81. Each of the rotating rollers 85 is fixedly connected to a rotating gear 86, and each of the rotating gears 86 meshes with the gear ring 83.

[0037] In actual operation, the staff passes the petroleum coke formed by coking into the outer wall tube 71 through the inlet of the outer shell 1, and the petroleum coke will adhere to the inner wall of the outer wall tube 71. Then the staff starts the driving motor 4 and the induced draft fan 3. The high-speed rotation of the output shaft of the driving motor 4 will drive the rotating shaft 5 to rotate at a high speed. The rotation of the rotating shaft 5 will drive the filter cover 6, the rotating frame 72 and the rotating disk 81 to rotate together. The rotation of the rotating frame 72 will drive a number of limit frames 73 to rotate. The rotation of the limit frames 73 will drive the crushing roller 75 to rotate. At the same time, due to the large friction between the inner wall of the outer wall tube 71 and the crushing roller 75, the crushing roller 75 rotates. At the same time, it will rotate along the outer wall tube 71. The rotation of the crushing roller 75 will crush the petroleum coke attached to the inner wall of the outer wall tube 71. At the same time, the petroleum coke will squeeze the crushing roller 75 to move in the direction close to the rotating shaft 5. The movement of the crushing roller 75 will drive the limit frame 73 to move, and the connecting spring 74 will be stretched. At the same time, under the elastic force of the connecting spring 74, the crushing roller 75 will also squeeze the petroleum coke. The crushing roller 75 squeezes and crushes the petroleum coke, which will crush and crush the larger particles of petroleum coke attached to the inner wall of the outer wall tube 71. The crushed petroleum coke will fall onto the rotating disk 81. The rotation of the rotating disk 81 will drive a number of fixed plates 84 and shovels to move. The blade 82 rotates, the fixed plate 84 rotates, which drives the rotating roller 85 to rotate. The rotating roller 85 rotates, which drives the rotating gear 86 to rotate. Since the rotating gear 86 and the ring gear 83 are meshed, the rotating gear 86 rotates along the ring gear 83. The rotation of the ring gear 83 drives the rotating roller 85 to rotate. The rotation of the rotating roller 85 further crushes the petroleum coke on the rotating disk 81, thereby fully crushing the petroleum coke. At the same time, the rotation of the rotating roller 85 throws the crushed petroleum coke onto the scraper 82. The petroleum coke on the scraper 82 is thrown along the inclined surface onto the crushing roller 75 behind it, and the crushing roller 75 crushes and grinds it again. When the fan 3 is started, the air in the outer shell 1 will be drawn in. The petroleum coke crushed into powder will pass through the filter cover 6 together with the air and be sucked out by the induced draft fan 3. The filter cover 6 will filter out the petroleum coke that is not fully crushed, and the rotation of the filter cover 6 will throw the filtered petroleum coke back to the rotating disk 81 again, and the rotating roller 85 will grind and grind it, so as to separate the petroleum coke fine powder that meets the fine powder grade requirement, and continue to grind and crush the petroleum coke powder that does not meet the requirement, and the outside air will pass into the outer wall tube 71 through the circular filter screen of the outer shell 1, and this process will be repeated to fully grind the petroleum coke in the outer shell 1 and grind it into powder.

[0038] Example 2

[0039] On the basis of Example 1, Figure 5-Figure 8As shown, it also includes a vibration mechanism, which is arranged on the shell 1. The vibration mechanism includes a cam ring 91, a vibration frame 92, a tension spring 93, a rubber pad 94 and a toggle rod 95. The cam ring 91 is connected to the inner wall of the shell 1 by bolts. The cam ring 91 is located below the filter cover 6. The rotating shaft 5 passes through the cam ring 91. The vibration frame 92 is slidably connected to the rotating frame 72. A plurality of tension springs 93 are connected between the vibration frame 92 and the rotating frame 72 by hooks. Each of the tension springs 93 is sleeved on the vibration frame 92. A plurality of rubber pads 94 are fixedly connected to the top of the vibration frame 92. A plurality of toggle rods 95 are connected to the vibration frame 92 by bolts. Each of the toggle rods 95 is in contact with the cam ring 91.

[0040] The cam ring 91 is provided with a plurality of trapezoidal protrusions at even intervals.

[0041] The rotation of the rotating frame 72 will drive the vibration frame 92 to rotate, and the rotation of the vibration frame 92 will drive several rubber pads 94 and the toggle rod 95 to rotate together. The rotation of the toggle rod 95 will contact the trapezoidal protrusion of the cam ring 91 and move upward along the inclined surface of the cam ring 91. The upward movement of several toggle rods 95 will drive the vibration frame 92 to move upward, and the tension spring 93 will be compressed. The upward movement of the vibration frame 92 will drive several rubber pads 94 to move upward. The upward movement of the rubber pad 94 will contact the bottom of the filter cover 6. The toggle rod 95 continues to rotate and will no longer be squeezed by the trapezoidal protrusion of the cam ring 91. The reset of the tension spring 93 will drive the vibration frame 92 rubber pad 94 and the toggle rod 95 to reset downward together. Repeat this process, thereby causing the vibration frame 92 and the rubber pad 94 to reciprocate up and down. The movable frame 92 rotates at a faster speed, so the speed of the vibration frame 92 moving up and down is also accelerated. Under the elastic force of the tension spring 93, the reciprocating up and down movement of the vibration frame 92 will vibrate the rotating frame 72, and then vibrate a number of crushing rollers 75, so that the petroleum coke attached to the outer wall of the crushing roller 75 will fall off and be crushed by the rotating roller 85, so as to avoid a large amount of petroleum coke sticking to the crushing roller 75 and being unable to be crushed, so that the petroleum coke falls off and is ground, and at the same time, the crushing roller 75 can more fully crush the petroleum coke on the inner wall of the outer wall tube 71, so as to more fully crush the petroleum coke powder in the outer shell 1, and at the same time, the reciprocating up and down movement of the rubber pad 94 will also slightly vibrate the filter cover 6, so as to shake off the petroleum coke powder attached to the filter cover 6, so as to avoid the petroleum coke powder blocking the filter cover 6.

[0042] Example 3

[0043] On the basis of Example 2, Figure 9-10As shown, it also includes a toggle mechanism, which is arranged on the fine grinding mechanism, and the toggle mechanism includes a support frame 101, a rotating shaft 102, a driven gear 103, a bevel gear 104 and a toggle frame 105. One of the fixed plates 84 in each group is connected to the support frame 101 by bolts, and each of the support frames 101 is rotatably connected to the rotating shaft 102. Each of the rotating shafts 102 is horizontally arranged, and one end of each of the rotating shafts 102 is connected to the driven gear 103 by a flat key. 3. The driven gear 103 is located above the rotating gear 86, and the rotating gear 86 is meshed with the driven gear 103. One end of each of the rotating shafts 102 away from the driven gear 103 is connected to a bevel gear 104 through a flat key. Each of the support frames 101 is rotatably connected to a toggle frame 105, and the toggle frame 105 is located between a group of rotating rollers 85. Each of the toggle frames 105 is also connected to a bevel gear 104 through a flat key, and the two bevel gears 104 are meshed.

[0044] The rotation of the fixed plate 84 will drive the support frame 101 to rotate, and the rotation of the support frame 101 will drive the rotating shaft 102 and the toggle frame 105 to rotate together. The rotation of the rotating gear 86 will cause the cam ring 91 meshing with it to rotate, and the rotation of the cam ring 91 will drive the rotating shaft 102 to rotate. The rotation of the rotating shaft 102 will drive one of the bevel gears 104 to rotate, and the rotation of one of the bevel gears 104 will drive the other bevel gear 104 to rotate, and the rotation of the other bevel gear 104 will drive the toggle frame 105 to rotate. The rotation of the toggle frame 105 will continuously toggle the petroleum coke powder between the two rotating rollers 85 to prevent the petroleum coke powder from accumulating between the two rotating rollers 85, and at the same time allow more petroleum coke powder to be crushed into between the rotating roller 85 and the rotating disk 81, and be crushed by the rotating roller 85, thereby more thoroughly crushing the petroleum coke powder and improving the grinding efficiency of the petroleum coke powder.

[0045] Example 4

[0046] On the basis of Example 3, Figure 5-Figure 7 As shown, it also includes an inclined frame 11, which is connected to the inner bottom of the shell 1 by bolts. The inclined frame 11 is located above the circular filter screen of the shell 1. The inclined frame 11 is in contact with the vibration frame 92, and the rotating shaft 5 is rotatably connected to the inclined frame 11.

[0047] The petroleum coke powder shaken off the filter cover 6 will fall onto the inclined frame 11, which can prevent the petroleum coke powder from falling onto the circular filter screen of the outer shell 1 and clogging the circular filter screen. Since the vibration frame 92 is in contact with the inclined frame 11, the reciprocating up and down movement of the vibration frame 92 will also vibrate the inclined frame 11, and the petroleum coke powder on the inclined frame 11 will be shaken off onto the rotating disk 81 and crushed by the rotating roller 85.

[0048] Example 5

[0049] On the basis of Example 4, Figure 11-Figure 12 As shown, it also includes a guide frame 121 and a square rod 122. The guide frame 121 is connected to the inner wall of the shell 1 by bolts. The guide frame 121 contacts the bottom of the filter cover 6. A plurality of square rods 122 are evenly spaced at the bottom of the filter cover 6.

[0050] When the filter cover 6 rotates, the petroleum coke powder attached to the bottom will be thrown to the outer edge under the action of centrifugal force. Since the bottom of the filter cover 6 is in contact with the guide frame 121, the guide frame 121 will continuously scrape the petroleum coke powder attached to the outer edge of the bottom of the filter cover 6 during the rotation of the filter cover 6. The scraped petroleum coke powder will fall back onto the outer wall tube 71 along the guide frame 121 and continue to be crushed by the crushing roller 75.

[0051] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are only illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A grinding device for petroleum coke, characterized in that: The invention comprises a housing (1), an upper cover (2), an induced draft fan (3), a driving motor (4), a rotating shaft (5), a filter cover (6), a grinding mechanism and a fine grinding mechanism. The housing (1) is provided with a circular filter screen and has an opening. The upper cover (2) is fixedly connected to the top of the housing (1). The induced draft fan (3) is fixedly connected to the upper cover (2). The induced draft fan (3) is communicated with the housing (1) through the upper cover (2). The driving motor (4) is fixedly connected to the lower part of the housing (1). The rotating shaft (5) is fixedly connected to the output shaft of the driving motor (4). The rotating shaft (5) is rotatably connected to the circular filter screen of the housing (1). The filter cover (6) is fixedly connected to the top of the rotating shaft (5). The filter cover (6) is rotatably connected to the inner wall of the housing (1). The grinding mechanism is arranged on the housing (1), and the fine grinding mechanism is arranged on the rotating shaft (5). The grinding mechanism comprises an outer wall tube (71), a rotating frame (72), a limiting frame (73), a connecting spring (74) and a grinding roller (75); the outer wall tube (71) is fixedly connected to the lower part of the inner wall of the outer shell (1); the rotating frame (72) is fixedly connected to the upper part of the rotating shaft (5); a plurality of limiting frames (73) are slidably connected to the rotating frame (72); two connecting springs (74) are connected between each limiting frame (73) and the rotating frame (72); each limiting frame (73) is rotatably connected to a grinding roller (75); each grinding roller (75) is in contact with the inner wall of the outer wall tube (71); The fine grinding mechanism comprises a rotating disk (81), a scraper (82), a gear ring (83), a fixed plate (84), a rotating roller (85) and a rotating gear (86); the rotating disk (81) is fixedly connected to the rotating shaft (5); the rotating disk (81) is rotatably connected to the outer shell (1); the rotating disk (81) is rotatably connected to the outer wall tube (71); a plurality of scrapers (82) are evenly spaced on the upper side of the rotating disk (81); the scrapers (82) are staggered with the crushing roller (75); each The scraper (82) is provided with an inclined surface, the gear ring (83) is fixedly connected to the inner bottom of the housing (1), and a plurality of fixed plates (84) are fixedly connected to the upper side of the rotating disk (81), two of the fixed plates (84) form a group, and each of the fixed plates (84) is rotatably connected to a rotating roller (85), two of the rotating rollers (85) form a group, and each of the rotating rollers (85) is fixedly connected to a rotating gear (86), and each of the rotating gears (86) is meshed with the gear ring (83); The invention also comprises a vibration mechanism, which is arranged on the housing (1), and comprises a cam ring (91), a vibration frame (92), a tension spring (93), a rubber cushion (94) and a toggle rod (95). The cam ring (91) is fixedly connected to the inner wall of the housing (1), the cam ring (91) is located below the filter cover (6), the rotating shaft (5) passes through the cam ring (91), the vibration frame (92) is slidably connected to the rotating frame (72), a plurality of tension springs (93) are connected between the vibration frame (92) and the rotating frame (72), a plurality of rubber cushions (94) are fixedly connected to the top of the vibration frame (92), and a plurality of toggle rods (95) are fixedly connected to the vibration frame (92), and each of the toggle rods (95) is in contact with the cam ring (91); The cam ring (91) is provided with a plurality of trapezoidal protrusions at even intervals; The invention also comprises a toggle mechanism, which is arranged on the fine grinding mechanism, and comprises a support frame (101), a rotating shaft (102), a driven gear (103), a bevel gear (104) and a toggle frame (105), wherein one of the fixed plates (84) of each group is fixedly connected to the support frame (101), each of the support frames (101) is rotatably connected to the rotating shaft (102), one end of each of the rotating shafts (102) is fixedly connected to the driven gear (103), and the driven gear (103) is fixedly connected to the driven gear (103). Located above the rotating gear (86), the rotating gear (86) will mesh with the driven gear (103), one end of each of the rotating shafts (102) away from the driven gear (103) is fixedly connected to a bevel gear (104), each of the supporting frames (101) is rotatably connected to a toggle frame (105), the toggle frame (105) is located between a group of rotating rollers (85), and each of the toggle frames (105) is also fixedly connected to a bevel gear (104), and the two bevel gears (104) are meshed; It also includes an inclined frame (11), the inclined frame (11) being fixedly connected to the inner bottom of the outer shell (1), the inclined frame (11) being located above the circular filter screen of the outer shell (1), the inclined frame (11) being in contact with the vibration frame (92), and the rotating shaft (5) being rotatably connected to the inclined frame (11).

2. A grinding device for petroleum coke according to claim 1, characterized in that: It also comprises a guide frame (121) and a square rod (122), wherein the guide frame (121) is fixedly connected to the inner wall of the outer shell (1), the guide frame (121) is in contact with the bottom of the filter cover (6), and a plurality of square rods (122) are evenly spaced at the bottom of the filter cover (6).

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