Screening device for calcining petroleum coke

Abstract

The utility model discloses a screening device for calcined petroleum coke, which belongs to the technical field of calcined petroleum coke and comprises a screening box, two partition plates are arranged in the screening box, three groups of screening net cylinders are arranged in the screening box, and the diameters of screening holes of the three groups of screening net cylinders are sequentially increased. A dust cleaning and collecting mechanism is arranged at the top of the screening box, and a constant-speed feeding mechanism is arranged in the middle of the screening box. In the process, the dust cleaning and collecting mechanism is arranged, and in the process, a negative pressure state is formed in a collecting tank through a negative pressure fan; and at the moment, dust in the screening box is adsorbed and collected into the collecting tank through the cleaning pipe and the vertical pipe, so that the dust generated in the screening process of the petroleum coke can be collected and treated, air pollution caused by dust floating is avoided, meanwhile, the collected dust can be recycled, and the screening effect on the petroleum coke is improved.

Description

Technical Field

[0001] This utility model relates to the field of calcined petroleum coke technology, and in particular to a screening device for calcined petroleum coke. Background Technology

[0002] Calcined petroleum coke is a product of petroleum coke after high-temperature calcination. Petroleum coke is the main raw material for calcined petroleum coke. It is a byproduct of the production of light oil products by cracking the feedstock oil in delayed coking units at high temperatures, with a yield of about 25-30% of the feedstock oil. Petroleum coke is a black or dark gray hard solid with a metallic luster. It is porous and consists of carbonaceous material composed of granular, columnar, or needle-like particles formed by tiny graphite crystals. After calcination, petroleum coke needs to be screened according to different particle sizes.

[0003] Existing petroleum coke screening devices have the advantages of saving manpower and reducing workload, but these devices cannot fully screen petroleum coke and have low efficiency.

[0004] The existing patent (publication number: CN209502268U) discloses a petroleum coke screening device, comprising a shell, support legs, support feet, discharge port one, cavity one, and cavity two. Its features include: an L-shaped support plate on one side of the shell, on which a motor, rotating shaft, and drive wheel are fitted; cavity one contains a screen barrel, feed inlet, through hole one, connecting shaft one, connecting shaft two, bearings, and driven wheel; the drive wheel and driven wheel are connected by a belt; cavity two has a discharge port two; and hydraulic rods and screen boxes are provided on both sides of the inner wall of cavity two, with through hole two on the screen box. The advantages of this utility model compared to the prior art are: thorough screening and high working efficiency.

[0005] Existing patents offer solutions to the above problems, but they cannot collect and clean the dust generated during the screening process. A large amount of dust floats during the screening of petroleum coke, which causes air pollution. Furthermore, the fact that petroleum coke dust can be collected and reused results in resource waste.

[0006] Therefore, a screening device for calcined petroleum coke is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a screening device for calcined petroleum coke, which can solve the problem that existing petroleum coke screening devices cannot collect and clean the dust generated during the screening process. A large amount of dust floats during the screening of petroleum coke, which causes air pollution. At the same time, the petroleum coke dust can be recycled and reused after collection, which leads to the problem of resource waste.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a screening device for calcined petroleum coke, comprising a screening box, wherein two partitions are provided inside the screening box, and three sets of screening screen cylinders are provided inside the screening box, wherein the screen hole diameter of the three sets of screening screen cylinders increases sequentially, a dust cleaning and collection mechanism is provided at the top of the screening box, a uniform feeding mechanism is provided in the middle of the screening box, and a uniform feeding mechanism is provided at one end of the screening box;

[0009] The dust collection and cleaning mechanism includes vertical pipes, cleaning pipes, a collection tank, a bottom cover, a collection bucket, a sealing ring, a negative pressure fan, a filter screen, and a filter element. Three sets of vertical pipes are fixedly connected to the top of the screening box. The cleaning pipe is fixedly connected to the top of the three sets of vertical pipes. The collection tank is fixedly connected to the side wall of the screening box. One end of the cleaning pipe is connected through the collection tank. The bottom cover is threaded to the bottom of the collection tank. The collection bucket is fixedly connected to the side wall of the bottom cover. The sealing ring is fixedly connected to the inner wall of the collection tank. The top of the collection bucket contacts the sealing ring. The negative pressure fan is bolted to the top of the collection tank. The filter screen is located at the exhaust end of the negative pressure fan. The filter element is located inside the filter screen.

[0010] Preferably, the uniform feeding mechanism includes a drive motor, a drive wheel, a feeding shaft, a first spiral blade, a driven wheel, and a transmission belt. The drive motor is bolted to the side wall of the screening box, the drive wheel is fixedly connected to the output end of the drive motor, the feeding shaft is bearing-connected to the middle of the screening box, the first spiral blade is fixedly connected to the side wall of the feeding shaft and is located in the middle of the three sets of screening cylinders, the driven wheel is fixedly connected to one end of the feeding shaft, and the transmission belt is disposed between the drive wheel and the driven wheel.

[0011] Preferably, the uniform feeding mechanism includes a protrusion, a feeding hopper, and a second spiral blade. The protrusion is disposed on the side wall of the screening box, the feeding shaft extends to the middle of the protrusion, the feeding hopper is fixedly connected to the side wall of the screening box, the bottom of the feeding hopper is connected through the protrusion, and the second spiral blade is fixedly connected to the side wall of the feeding shaft, and the second spiral blade is located in the middle of the protrusion.

[0012] Preferably, the bottom of the screening box is equipped with three sets of discharge hoods, and the bottom of the discharge hoods is inclined.

[0013] Preferably, a vibration motor is bolted to the side wall of the discharge hood, and the vibration motor is located in the middle of the side wall of the discharge hood.

[0014] Preferably, the air outlet of the negative pressure fan is provided with filter cotton.

[0015] Preferably, a protective top is fixedly connected to the top of the collection tank, and the protective top is located above the negative pressure fan.

[0016] Preferably, a cleaning port is provided on the side wall of the screening box, and a cover is installed in the middle of the cleaning port.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application incorporates a dust collection and cleaning mechanism. During this process, a negative pressure fan creates a negative pressure inside the collection tank. At this time, the dust inside the screening box is adsorbed and collected into the collection tank through the cleaning pipe and vertical pipe. In this way, the dust generated during the screening of petroleum coke can be collected and treated, preventing dust from floating and polluting the air. At the same time, the collected dust can be recycled and reused, improving the screening effect of petroleum coke.

[0019] 2. This application, by setting up a uniform feeding mechanism and a uniform feeding mechanism, enables the raw material to enter the screening box at a uniform speed, and at the same time, the raw material is conveyed at a uniform speed in the middle of the screening box, thereby enabling the petroleum coke raw material to enter the middle of the screening box at a uniform speed for screening, thus improving the screening effect of petroleum coke. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an overall structural view of the present invention;

[0022] Figure 2 This is the left view of the present invention;

[0023] Figure 3 This utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0024] Figure 4 This is a structural view of the dust cleaning and collection mechanism in this utility model;

[0025] Figure 5 This is a structural view of the uniform speed feeding mechanism and the uniform speed feeding mechanism in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Screening box; 2. Baffle plate; 3. Screening cylinder; 4. Dust cleaning and collection mechanism; 5. Uniform feeding mechanism; 6. Uniform feeding mechanism; 41. Vertical pipe; 42. Cleaning pipe; 43. Collection tank; 44. Bottom cover; 45. Collection bucket; 46. Sealing ring; 47. Negative pressure fan; 48. Filter screen cover; 49. Filter element; 51. Drive motor; 52. Drive wheel; 53. Feeding shaft; 54. First spiral blade; 55. Driven wheel; 56. Transmission belt; 61. Protrusion; 62. Feed hopper; 63. Second spiral blade; 7. Discharge cover; 8. Vibrating motor; 9. Filter cotton; 10. Protective top; 11. Cleaning port; 12. Cover. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 5 This utility model provides a technical solution:

[0030] A screening device for calcined petroleum coke includes a screening box 1, with two partitions 2 inside the screening box 1, and three sets of screening screen cylinders 3 inside the screening box 1, the screen hole diameter of the three sets of screening screen cylinders 3 increasing sequentially, a dust cleaning and collection mechanism 4 at the top of the screening box 1, a uniform feeding mechanism 5 in the middle of the screening box 1, and a uniform feeding mechanism 6 at one end of the screening box 1.

[0031] The dust collection and cleaning mechanism 4 includes a vertical pipe 41, a cleaning pipe 42, a collection tank 43, a bottom cover 44, a collection bucket 45, a sealing ring 46, a negative pressure fan 47, a filter screen 48, and a filter element 49. The three sets of vertical pipes 41 are fixedly connected to the top of the screening box 1. The cleaning pipe 42 is fixedly connected to the top of the three sets of vertical pipes 41. The collection tank 43 is fixedly connected to the side wall of the screening box 1. One end of the cleaning pipe 42 is connected through to the collection tank 43. The bottom cover 44 is threadedly connected to the bottom of the collection tank 43. The collection bucket 45 is fixedly connected to the side wall of the bottom cover 44. The sealing ring 46 is fixedly connected to the inner wall of the collection tank 43. The top of the collection bucket 45 is in contact with the sealing ring 46. The negative pressure fan 47 is bolted to the top of the collection tank 43. The filter screen 48 is located at the exhaust end of the negative pressure fan 47. The filter element 49 is located inside the filter screen 48.

[0032] Specifically, such as Figure 3 As shown, three sets of discharge hoods 7 are installed at the bottom of the screening box 1, and the bottom of the discharge hoods 7 is inclined.

[0033] Specifically, such as Figure 3 As shown, a vibration motor 8 is bolted to the side wall of the discharge hood 7, and the vibration motor 8 is located in the middle of the side wall of the discharge hood 7.

[0034] Specifically, such as Figure 4 As shown, the air outlet of the negative pressure fan 47 is equipped with a filter cotton 9.

[0035] Specifically, such as Figure 4 As shown, a protective top 10 is fixedly connected to the top of the collection tank 43, and the protective top 10 is located above the negative pressure fan 47.

[0036] Specifically, such as Figure 3 As shown, a cleaning port 11 is provided on the side wall of the screening box 1, and a cover 12 is installed in the middle of the cleaning port 11.

[0037] In operation, the uniform feeding mechanism 6 and the uniform conveying mechanism 5 feed the petroleum coke raw material into the screening box 1 at a uniform speed, and convey it uniformly in the middle of the screening box 1. Three sets of screening screen cylinders 3 screen the petroleum coke. The screen hole diameter of each set of screening screen cylinders 3 gradually increases, which can screen petroleum coke particles of different diameters. During screening, the negative pressure fan 47 is activated. The dust generated during the screening process is guided to the cleaning pipe 42 through three sets of vertical pipes 41, and then enters the collection tank 43. The negative pressure fan 47 generates negative pressure at the top of the collection tank 43, and filters the intake air through the filter screen cover 48 and the filter element 49 to ensure that the dust is effectively collected in the collection bucket 45. The bottom cover 44 of the collection tank 43 and the collection bucket 45 facilitate dust collection. After centralized processing and replacement, the material is discharged through three sets of inclined discharge hoods 7 after screening. The vibration motors 8 on the side walls of the discharge hoods 7 can periodically generate vibrations, which helps to prevent material blockage and improve discharge efficiency. The cleaning ports 11 on the side walls of the screening box 1 facilitate the regular maintenance and cleaning of large particles of impurities remaining inside the screening box 1. The protective top 10 protects the negative pressure fan 47 from the influence of the external environment. At the same time, the filter cotton 9 further purifies the discharged air and reduces environmental pollution. In this way, the dust generated during the screening of petroleum coke can be collected and treated, avoiding dust floating and causing air pollution. At the same time, the collected dust can be recycled and reused, improving the screening effect of petroleum coke.

[0038] Specifically, such as Figure 5As shown, the uniform feeding mechanism 5 includes a drive motor 51, a drive wheel 52, a feeding shaft 53, a first spiral blade 54, a driven wheel 55, and a transmission belt 56. The drive motor 51 is bolted to the side wall of the screening box 1. The drive wheel 52 is fixedly connected to the output end of the drive motor 51. The feeding shaft 53 is bearing connected to the middle of the screening box 1. The first spiral blade 54 is fixedly connected to the side wall of the feeding shaft 53. The first spiral blade 54 is located in the middle of the three sets of screening cylinders 3. The driven wheel 55 is fixedly connected to one end of the feeding shaft 53. The transmission belt 56 is disposed between the drive wheel 52 and the driven wheel 55.

[0039] Specifically, such as Figure 5 As shown, the uniform feeding mechanism 6 includes a protrusion 61, a feeding hopper 62, and a second spiral blade 63. The protrusion 61 is disposed on the side wall of the screening box 1, and the feeding shaft 53 extends to the middle of the protrusion 61. The feeding hopper 62 is fixedly connected to the side wall of the screening box 1, and the bottom of the feeding hopper 62 is connected through the protrusion 61. The second spiral blade 63 is fixedly connected to the side wall of the feeding shaft 53 and is located in the middle of the protrusion 61.

[0040] In use, firstly, the drive motor 51 starts, driving the feeding shaft 53 to rotate via the drive wheel 52, transmission belt 56, and driven wheel 55. At this time, the second spiral blade 63 feeds the raw material inside the feed hopper 62 into the middle of the screening box 1 at a uniform speed, achieving uniform feeding of the raw material. The rotation of the first spiral blade 54 enables the raw material to be conveyed at a uniform speed in the middle of the screening box 1, so that the raw material is screened at a uniform speed and evenly. In this way, the petroleum coke raw material can enter the middle of the screening box 1 at a uniform speed for screening, improving the screening effect of petroleum coke.

[0041] By adopting the above technical solution, the problem that existing petroleum coke screening devices cannot collect and clean the dust generated during the screening process is solved. A large amount of dust floats during the screening of petroleum coke, which causes air pollution. At the same time, the petroleum coke dust can be recycled and reused after collection, which leads to the problem of resource waste.

[0042] Working principle: In use, the drive motor 51 is first started, driving the feeding shaft 53 to rotate via the drive wheel 52, transmission belt 56, and driven wheel 55. At this time, the second spiral blade 63 feeds the raw material inside the feed hopper 62 into the middle of the screening box 1 at a uniform speed, achieving uniform feeding of the raw material. The rotation of the first spiral blade 54 enables the raw material to be conveyed at a uniform speed in the middle of the screening box 1. Three sets of screening cylinders 3 screen the petroleum coke. The screen hole diameter of each set of screening cylinders 3 gradually increases, enabling the screening of petroleum coke of different diameters. The coke particles are screened. During screening, the negative pressure fan 47 is activated. The dust generated during screening is guided to the cleaning pipe 42 through three sets of vertical pipes 41, and then enters the collection tank 43. The negative pressure fan 47 generates negative pressure at the top of the collection tank 43. The air is filtered through the filter screen 48 and the filter element 49 to ensure that the dust is effectively collected in the collection bucket 45. The bottom cover 44 of the collection tank 43 and the collection bucket 45 facilitate the centralized treatment and replacement of dust. After screening, the material is discharged through three sets of inclined discharge hoods 7.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A screening device for calcined petroleum coke, comprising a screening box (1), characterized in that: The screening box (1) is equipped with two partitions (2) inside. The screening box (1) is equipped with three sets of screening screen cylinders (3) inside. The screen hole diameter of the three sets of screening screen cylinders (3) increases sequentially. The top of the screening box (1) is equipped with a dust cleaning and collection mechanism (4). The middle of the screening box (1) is equipped with a uniform feeding mechanism (5). One end of the screening box (1) is equipped with a uniform feeding mechanism (6). The dust collection and cleaning mechanism (4) includes a vertical pipe (41), a cleaning pipe (42), a collection tank (43), a bottom cover (44), a collection bucket (45), a sealing ring (46), a negative pressure fan (47), a filter screen (48), and a filter element (49). Three sets of the vertical pipes (41) are fixedly connected to the top of the screening box (1). The cleaning pipe (42) is fixedly connected to the top of the three sets of vertical pipes (41). The collection tank (43) is fixedly connected to the side wall of the screening box (1). One end of the cleaning pipe (42) is connected to the collection tank (43). The bottom cover (44) is threaded to the bottom of the collection tank (43), the collection bucket (45) is fixedly connected to the side wall of the bottom cover (44), the sealing ring (46) is fixedly connected to the inner wall of the collection tank (43), the top of the collection bucket (45) is in contact with the sealing ring (46), the negative pressure fan (47) is bolted to the top of the collection tank (43), the filter screen (48) is set at the exhaust end of the negative pressure fan (47), and the filter element (49) is set inside the filter screen (48).

2. The screening device for calcined petroleum coke according to claim 1, characterized in that: The uniform feeding mechanism (5) includes a drive motor (51), a drive wheel (52), a feeding shaft (53), a first spiral blade (54), a driven wheel (55), and a transmission belt (56). The drive motor (51) is bolted to the side wall of the screening box (1). The drive wheel (52) is fixedly connected to the output end of the drive motor (51). The feeding shaft (53) is bearing connected to the middle of the screening box (1). The first spiral blade (54) is fixedly connected to the side wall of the feeding shaft (53). The first spiral blade (54) is located in the middle of the three sets of screening cylinders (3). The driven wheel (55) is fixedly connected to one end of the feeding shaft (53). The transmission belt (56) is disposed between the drive wheel (52) and the driven wheel (55).

3. A screening device for calcined petroleum coke according to claim 2, characterized in that: The uniform feeding mechanism (6) includes a protrusion (61), a feeding hopper (62), and a second spiral blade (63). The protrusion (61) is disposed on the side wall of the screening box (1). The feeding shaft (53) extends to the middle of the protrusion (61). The feeding hopper (62) is fixedly connected to the side wall of the screening box (1). The bottom of the feeding hopper (62) is connected to the protrusion (61). The second spiral blade (63) is fixedly connected to the side wall of the feeding shaft (53). The second spiral blade (63) is located in the middle of the protrusion (61).

4. A screening device for calcined petroleum coke according to claim 1, characterized in that: The bottom of the screening box (1) is equipped with three sets of discharge hoods (7), and the bottom of the discharge hoods (7) is inclined.

5. A screening device for calcined petroleum coke according to claim 4, characterized in that: A vibration motor (8) is bolted to the side wall of the discharge hood (7), and the vibration motor (8) is located in the middle of the side wall of the discharge hood (7).

6. A screening device for calcined petroleum coke according to claim 1, characterized in that: The negative pressure fan (47) is equipped with a filter cotton (9) at its air outlet.

7. A screening device for calcined petroleum coke according to claim 1, characterized in that: The top of the collection tank (43) is fixedly connected to a protective top (10), which is located above the negative pressure fan (47).

8. A screening device for calcined petroleum coke according to claim 1, characterized in that: The screening box (1) has a cleaning port (11) on its side wall, and a cover (12) is installed in the middle of the cleaning port (11).

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