A petroleum coke particle crushing and screening device

Abstract

The present invention discloses a petroleum coke particle crushing and screening device, which relates to the technical field of graphitization machinery. The device includes a housing, a top cover, support feet, a feed inlet, a crushing part, a screening part and an aeration part. The upper half of the housing is a hollow cylinder with an open top, and the aggregate bin is communicated with the interior of the housing through sieve holes. The aeration part includes an aeration nozzle and an air inlet pipe. The aeration nozzle is installed directly below the interior of the housing, and a plurality of air outlet holes are provided on the aeration nozzle. An air inlet pipe is connected below the aeration nozzle. For this petroleum coke particle crushing and screening device, the screening mechanism is arranged above the crushing mechanism, and the particles and dust are blown upward by means of high-pressure aeration for screening. Compared with the screening mechanism arranged below, it can avoid the blockage of sieve holes caused by long-term accumulation of particles, and also reduce the mechanical influence of the crushing mechanism on the screening mechanism. At the same time, the screening mechanism can select the screening particle size, is easy to operate, does not need to be replaced, and improves the efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of graphitization machinery, and specifically to a petroleum coke particle crushing and screening device. Background Art

[0002] Petroleum coke belongs to the category of easily graphitizable carbon. It is a product obtained by separating light and heavy oils through distillation of crude oil and then subjecting the heavy oil to thermal cracking. Judging from the appearance, coke is in the form of irregularly shaped and sized black lumps (or particles). Petroleum coke can be used as a raw material to manufacture graphite electrodes with relatively low resistivity, or can be used as a fuel in some industries, such as the aluminum-making process. When used as a fuel, since the ignition points of petroleum coke with different particle sizes are different, the larger the particle size, the higher the ignition point. To ensure the combustion efficiency after fuel mixing, it is necessary to crush and screen large pieces of petroleum coke.

[0003] Patent CN201910560505.6 discloses an automatic ramming device for a petroleum coke grid screen and the feeding port of a conveying device. By crushing and screening particles of petroleum coke, specifically, the ramming device is integrated upstream of the technological process at the feeding port of the hopper, and a grid screen is installed at the feeding port of the hopper. The ramming device is integrated on the grid screen. The ramming device crushes the petroleum coke particles through shear force, and after crushing, they reach the lower grid screen for screening. However, there are still some problems with this patent. Specifically, the grid screen is located directly below the ramming device. Due to the concentrated falling of materials on the grid screen, under the action of gravity, even if the grid screen vibrates and screens through a vibration motor, some of the screen holes will be blocked. Because petroleum coke contains volatile substances, such as water, and has a certain viscosity. Moreover, during the ramming process, if too much material falls between the upper ramming device and the grid screen, during the ramming process, the petroleum coke particles will be stuck in the screen holes under the action of extrusion force, further causing blockage, which will affect the working efficiency over time. At the same time, the number of mesh openings of the screening mechanism in this patent is fixed. If it is necessary to screen particles of different sizes, it is necessary to replace them, or design them into the current mainstream step-by-step screening method, which is too complicated to operate and too costly. To solve the above problems, we propose a petroleum coke particle crushing and screening device that can prevent screen hole blockage and can freely change the screen hole size. Summary of the Invention

[0004] The purpose of the present invention is to provide a petroleum coke particle crushing and screening device to solve the problems in the above background art that the screening structure of the current ramming and screening device applied to petroleum coke is prone to blockage and the selection of screen hole size is single.

[0005] To achieve the above object, the present invention provides the following technical solution: A petroleum coke particle crushing and screening device, comprising a housing, a top cover, support feet, a feed inlet, a crushing section, a screening section, and an aeration section. The upper half of the housing is a hollow cylinder with an open top, and the lower half of the housing is an inverted hollow frustum of a cone and is integrally welded to its upper half. A top cover is installed above the housing, and a feed inlet is provided on the top cover. Support feet are provided on the lower side of the housing. The crushing section includes a motor, a motor output shaft, a first connecting rod, a collar, a roller rotating shaft, a roller, a gear, and an annular rack. The motor is installed directly above the top cover, and the motor output shaft of the motor penetrates the top cover. A first connecting rod is connected to the bottom side of the motor output shaft, and a collar is provided at the end of the first connecting rod. A roller is attached and installed on the side wall of the lower half of the housing, and a roller rotating shaft rotatably connected to the roller is provided at the top of the roller. The collar is sleeved on the roller rotating shaft, and a gear is provided at the top of the roller rotating shaft. An annular rack meshing with the gear is provided around the top end of the lower half of the housing;

[0006] The screening section includes a baffle, screening holes, a hydraulic rod, an aggregate bin, and a discharge port. Screening holes are provided on the inner wall of the upper half of the housing, and a baffle is attached and installed on the inner wall of the housing with the screening holes. The baffle is connected to a hydraulic rod installed on the top of the top cover and moves up and down inside the housing. The baffle controls the opening and closing of the screening holes. An aggregate bin is provided on the side of the housing, and a discharge port is provided below the aggregate bin. The aggregate bin is connected to the inside of the housing through the screening holes;

[0007] The aeration section includes an aeration nozzle and an air inlet pipe. The aeration nozzle is installed directly below the inside of the housing, and a plurality of air outlet holes are provided on the aeration nozzle. An air inlet pipe is connected below the aeration nozzle.

[0008] Preferably, two sets of the first connecting rod, the collar, the roller rotating shaft, the roller, and the gear are provided, and the first connecting rods are symmetrically arranged about the motor output shaft.

[0009] Preferably, the shape of the aeration nozzle is conical, and the bottom of the roller is attached and installed on the side wall of the aeration nozzle.

[0010] Preferably, the screening holes include a first screening hole, a second screening hole, and a third screening hole. The heights and pore diameters of the first screening hole, the second screening hole, and the third screening hole on the inner wall of the housing are different, and the three are arranged along the circumferential direction of the inner wall of the housing. A limiting hole is reserved in the middle section of the baffle, and the limiting hole controls the opening and closing of the first screening hole, the second screening hole, and the third screening hole respectively when the baffle moves.

[0011] Further preferably, the baffle is an arc-shaped plate, and at least one set of baffles is provided. The screening holes at the same baffle position do not exceed the two ends of the side of the baffle in the circumferential direction of the housing. The baffle is connected to a movable plate through a second connecting rod. The movable plate is movably sleeved on the motor output shaft. The hydraulic rod is connected to the top of the movable plate, and aggregate bins with the same number as the baffle are provided outside the baffle.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: for this petroleum coke particle crushing and screening device, compared with the traditional petroleum coke vibrating crushing and screening machine, the screening mechanism is arranged above the crushing structure, and high-pressure aeration is used to blow the particles to the screening mechanism for screening. This can effectively avoid the problem of particle jamming in the sieve holes due to the gravitational force, and at the same time, it can also avoid the problem of sieve hole blockage caused by the crushing mechanism squeezing the particles in the middle of the screening mechanism during mechanical movement. At the same time, this device is provided with sieve holes of various different sizes on the screening mechanism, and the movement of the limiting holes on the baffle is used to achieve the conversion of the sieve hole size. Compared with the traditional screening mechanism, it does not require replacing sieve holes of different meshes, has higher efficiency, and is also convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the internal structure of the present invention;

[0014] Figure 2 is a schematic diagram of the baffle structure of the present invention;

[0015] Figure 3 is a schematic top view of the position of the movable plate of the baffle of the present invention;

[0016] Figure 4 is a schematic diagram of the working state of the first sieve hole of the present invention;

[0017] Figure 5 is a schematic diagram of the working state of the second sieve hole of the present invention;

[0018] Figure 6 is a schematic diagram of the working state of the third sieve hole of the present invention;

[0019] Figure 7 is a schematic top view of the gear and annular rack of the present invention.

[0020] In the figure: 1, housing; 2, top cover; 3, support feet; 4, motor; 5, first connecting rod; 6, collar; 7, roller rotating shaft; 8, roller; 9, gear; 10, annular rack; 11, feed inlet; 12, movable plate; 13, second connecting rod; 14, baffle; 15, limiting hole; 16, sieve hole; 1601, first sieve hole; 1602, second sieve hole; 1603, third sieve hole; 17, hydraulic rod; 18, aggregate bin; 19, discharge port; 20, aeration nozzle; 21, intake pipe; 22, motor output shaft. DETAILED DESCRIPTION OF THE INVENTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1:

[0023] Please refer to Figure 1 and Figure 7 , the present invention provides a technical solution: a petroleum coke particle crushing and screening device, including a housing 1, a top cover 2, support feet 3, a feed inlet 11, a crushing part, a screening part, and an aeration part. The upper half of the housing 1 is a hollow cylinder with an open top, and the lower half of the housing 1 is an inverted hollow frustum of a cone and is integrally welded to its upper half. A top cover 2 is installed above the housing 1, and a feed inlet 11 is provided on the top cover 2. Support feet 3 are provided on the lower side of the housing 1.

[0024] The crushing part includes a motor 4, a motor output shaft 22, a first connecting rod 5, a collar 6, a roller rotating shaft 7, a roller 8, a gear 9, and an annular rack 10. The motor 4 is installed directly above the top cover 2, and the motor output shaft 22 of the motor 4 penetrates the top cover 2. A first connecting rod 5 is connected to the bottom side of the motor output shaft 22, and a collar 6 is provided at the end of the first connecting rod 5. A roller 8 is attached and installed on the side wall of the lower half of the housing 1, and a roller rotating shaft 7 rotatably connected to the roller 8 is provided at the top of the roller 8. The collar 6 is sleeved on the roller rotating shaft 7, and a gear 9 is provided at the top of the roller rotating shaft 7. An annular rack 10 meshing with the gear 9 is provided around the top end of the lower half of the housing 1. By rotating the motor 4 to drive the first connecting rod 5 to rotate, the first connecting rod 5 drives the roller rotating shaft 7 and the roller 8 to perform circular motion through the collar 6. Under the action of the gear 9 and the annular rack 10, the roller 8 can roll along the inner wall of the lower half of the housing 1 to crush the internal petroleum coke particles.

[0025] The screening section includes a baffle 14, a sieve hole 16, a hydraulic rod 17, an aggregate bin 18, and a discharge port 19. The inner wall of the upper half of the housing 1 is provided with the sieve hole 16. The baffle 14 is fitted and installed on the inner wall of the housing 1 with the sieve hole 16. The baffle 14 is connected to the hydraulic rod 17 installed at the top of the top cover 2 and moves up and down inside the housing 1. The baffle 14 controls the opening and closing of the sieve hole 16. An aggregate bin 18 is provided on the side of the housing 1, and a discharge port 19 is provided below the aggregate bin 18. The aggregate bin 18 is connected to the inside of the housing 1 through the sieve hole 16. The sieve hole 16 is located above the inside of the housing 1, and the mechanical movement extrusion of the crushing section below it will not affect the sieve hole 16. At the same time, the particles move upward and will not be squeezed at the sieve hole 16, reducing the risk of blockage. When the baffle 14 moves up and down, it can block the sieve hole 16 and control the opening and closing of the sieve hole 16. The number of sieve holes set in this embodiment can be designed as needed, that is, to ensure that the baffle 14 can completely cover the sieve hole 16 when blocking. The particles passing through the sieve hole 16 enter the aggregate bin 18 and are removed from the machine through the discharge port 19;

[0026] The aeration section includes an aeration nozzle 20 and an air inlet pipe 21. The aeration nozzle 20 is installed directly below the inside of the housing 1. A plurality of air outlet holes are provided on the aeration nozzle 20. The air inlet pipe 21 is connected below the aeration nozzle 20. The high-pressure gas is transported to the aeration nozzle 20 through the air inlet pipe 21 by means of high-pressure aeration. The aeration nozzle 20 blows the particles in the chamber. The air pressure reaches the aggregate bin 18 through the sieve hole 16 and is discharged through the discharge port 19.

[0027] As Figure 3 shown, preferably, there are two sets of the overall settings of the first connecting rod 5, the collar 6, the roller rotating shaft 7, the roller 8, and the gear 9. The first connecting rod 5 is symmetrically arranged with respect to the motor output shaft 22. By setting two sets of crushing mechanisms, while ensuring the crushing efficiency, the lateral force of the crushing mechanism on the motor output shaft 22 is balanced, reducing the damage to the motor output shaft 22.

[0028] As Figure 1 shown, preferably, the shape of the aeration nozzle 20 is conical, and the bottom of the roller 8 is fitted and installed on the side wall of the aeration nozzle 20. In this solution, by reducing the gap between the aeration nozzle 20 and the roller 8, the roller 8 can better crush the particles below the inside of the housing 1, avoiding incomplete crushing of some particles due to the existence of the gap.

[0029] Embodiment 2:

[0030] As Figures 4 - 6As shown, preferably, the sieve holes 16 include a first sieve hole 1061, a second sieve hole 1602, and a third sieve hole 1603. The heights and pore diameters of the first sieve hole 1061, the second sieve hole 1602, and the third sieve hole 1603 on the inner wall of the housing 1 are different. The three are arranged along the circumferential direction of the inner wall of the housing 1. A limiting hole 15 is reserved in the middle section of the baffle 14. When the baffle 14 moves, the limiting hole 15 controls the opening and closing of the first sieve hole 1061, the second sieve hole 1602, and the third sieve hole 1603 respectively. By setting sieve holes 16 with different pore diameters at different heights, when transformation is needed, it only requires moving the limiting hole 15 to the corresponding position. The size of the baffle 14 needs to ensure that when the limiting hole 15 corresponds to one sieve hole 16, the remaining parts can block the other two sieve holes 16, increasing the selectivity of the pore diameter of the sieve holes 16.

[0031] As Figure 2 shown, as a further preference, the baffle 14 is an arc-shaped plate. At least one group of baffle 14 is provided. The sieve holes 16 at the position of the same baffle 14 do not extend beyond the two ends of the side surface of the baffle 14 in the circumferential direction of the housing 1. The baffle 14 is connected to the movable plate 12 through the second connecting rod 13. The movable plate 12 is movably sleeved on the output shaft 22 of the motor. The hydraulic rod 17 is connected to the top of the movable plate 12. An aggregate bin 18 with the same quantity as the baffle 14 is arranged outside the baffle 14. The baffle 14 being an arc-shaped plate can completely fit the inner wall of the upper half of the housing 1, ensuring the closing effect. At the same time, setting multiple baffles 14 instead of an integral annular baffle 14 can play a role in weight reduction.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petroleum coke particle crushing and screening device, comprising a housing (1), a top cover (2), supporting feet (3), a feed inlet (11), a crushing part, a screening part and an aeration part. The upper half of the housing (1) is a hollow cylinder with an open top, and the lower half of the housing (1) is an inverted hollow frustum of a cone and is integrally welded to its upper half. A top cover (2) is installed above the housing (1), and a feed inlet (11) is provided on the top cover (2). Supporting feet (3) are provided on the lower side of the housing (1). It is characterized in that: The crushing part includes a motor (4), a motor output shaft (22), a first connecting rod (5), a collar (6), a roller rotating shaft (7), a roller (8), a gear (9), and an annular rack (10). The motor (4) is installed directly above the top cover (2). The motor output shaft (22) of the motor (4) penetrates through the top cover (2). A first connecting rod (5) is connected to the bottom side of the motor output shaft (22). A collar (6) is provided at the end of the first connecting rod (5). A roller (8) is attached and installed on the side wall of the lower half of the housing (1). A roller rotating shaft (7) rotatably connected to the roller (8) is provided at the top of the roller (8). The collar (6) is sleeved on the roller rotating shaft (7). A gear (9) is provided at the top of the roller rotating shaft (7). An annular rack (10) meshing with the gear (9) is provided around the top end of the lower half of the housing (1). The screening part includes a baffle (14), a sieve hole (16), a hydraulic rod (17), an aggregate bin (18), and a discharge port (19). Sieve holes (16) are provided on the inner wall of the upper half of the housing (1). A baffle (14) is attached and installed on the inner wall of the housing (1) where the sieve holes (16) are located. The baffle (14) is connected to the hydraulic rod (17) installed on the top of the top cover (2) and moves up and down inside the housing (1). The baffle (14) controls the opening and closing of the sieve holes (16). An aggregate bin (18) is provided on the side of the housing (1). A discharge port (19) is provided below the aggregate bin (18). The aggregate bin (18) is communicated with the inside of the housing (1) through the sieve holes (16). The aeration part includes an aeration nozzle (20) and an air inlet pipe (21). The aeration nozzle (20) is installed directly below the inside of the housing (1). Multiple air outlet holes are provided on the aeration nozzle (20). An air inlet pipe (21) is connected below the aeration nozzle (20). There are two groups of the overall settings of the first connecting rod (5), the collar (6), the roller rotating shaft (7), the roller (8), and the gear (9). The first connecting rods (5) are symmetrically arranged with respect to the motor output shaft (22). The shape of the aeration nozzle (20) is conical. The bottom of the roller (8) is attached and installed on the side wall of the aeration nozzle (20).

2. The petroleum coke particle crushing and screening device according to claim 1, characterized in that: The sieve holes (16) include a first sieve hole (1061), a second sieve hole (1602), and a third sieve hole (1603). The heights and pore diameters of the first sieve hole (1061), the second sieve hole (1602), and the third sieve hole (1603) on the inner wall of the housing (1) are different. The three are arranged along the circumferential direction of the inner wall of the housing (1). A limiting hole (15) is reserved in the middle section of the baffle (14). When the baffle (14) moves, the limiting hole (15) controls the opening and closing of the first sieve hole (1061), the second sieve hole (1602), and the third sieve hole (1603) respectively.

3. The petroleum coke particle crushing and screening device according to claim 2, wherein: The baffle plate (14) is an arc-shaped plate, and at least one group of baffle plates (14) is provided. The sieve holes (16) at the position of the same baffle plate (14) do not extend beyond the two ends of the side surface of the baffle plate (14) in the circumferential direction of the housing (1). The baffle plate (14) is connected to the movable plate (12) through a second connecting rod (13). The movable plate (12) is movably sleeved on the motor output shaft (22). The hydraulic rod (17) is connected to the top of the movable plate (12). An aggregate bin (18) with the same quantity as the baffle plate (14) is arranged outside the baffle plate (14).

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