Coking ash screening device

Abstract

The coking ash screening device comprises a screening barrel, supporting legs and a discharging pipe are fixedly installed on the side, opposite to the ground, of the screening barrel, a feeding hopper is fixedly installed on the side, away from the ground, of the screening barrel, an electric air cylinder is fixedly installed in the center of the side, away from the ground, of the screening barrel, and a telescopic part of the electric air cylinder extends into the screening barrel; the telescopic part is fixedly connected with the fixing frame, a first motor is fixedly installed in the fixing frame, the output end of the first motor is fixedly connected with a rotating shaft through a coupler, and the end, away from the first motor, of the rotating shaft is rotationally connected with the first smashing roller; a mounting plate is fixedly mounted in the middle of the inner side wall of the screening barrel, spring rods are fixedly mounted on the edge of the mounting plate, a screen is fixedly mounted at the ends, away from the mounting plate, of the spring rods, and the screen is adjacent to the first smashing roller and located under the first smashing roller. According to the device, the situation that the screen rotates along with the second crushing roller is avoided, and the treatment efficiency of large-particle coking ash in the coking ash is improved.

Description

Technical Field

[0001] The present application relates to the technical field of screening coke ash, and in particular to a coke ash screening device. Background Art

[0002] When coke ash is used in a blast furnace, it mainly enters the pulverizing system through the belt of the feeding plant. After the coke ash is pulverized by the medium-speed mill, it is mixed with the pulverized coal used in the blast furnace by the coal injection system and then transported to the blast furnace from the coal injection gun to inject the mixed coke ash. Due to the high cold strength of coke, if there are large particles mixed in the coke ash and the aperture of the coal injection system pipeline is small, it is easy to cause gun blockage or even coal shortage in the whole system, which will seriously affect the pulverizing capacity of the medium-speed mill and the safe operation of the equipment.

[0003] The related technology discloses a coking ash screening device, including a box body, a feeding barrel fixedly connected to the upper end of the box body, a fixed frame slidably connected to the box body, a screen fixedly connected to the fixed frame, a rotating shaft arranged through the center of the screen, a bearing matched with the rotating shaft fixedly connected to the center of the screen, one side of the rotating shaft is rotatably connected to crushing rollers arranged correspondingly on the upper and lower end surfaces of the screen, a vibration box is fixedly connected to the upper end of the box body, a vibration plate is slidably connected to the vibration box, one end of the rotating shaft is slidably inserted into the vibration box and fixedly connected to a first motor, the first motor is fixedly connected to the lower end of the vibration plate, one end of the crushing roller is fixedly connected to a bevel gear, and the upper and lower ends of the fixed frame are fixedly connected to a gear ring matched with the bevel gear.

[0004] When the above-mentioned coke ash screening device is in use, it crushes the large particles of coke ash on the screen after screening, so as to improve the overall screening and processing efficiency of the coke ash. However, since the coke ash screening device with the above-mentioned structure can slide up and down along the inner wall of the box when in use, that is to say, the screen plate and the inner wall of the box are not completely fixed, when the coke ash screening device with the above-mentioned structure is crushing and processing large particles of coke ash, it is easy for the friction between the screen and the inner wall of the box to be insufficient, thereby causing the screen to rotate together with the crushing roller, resulting in a relatively low crushing efficiency of the device for large particles of coke ash. Utility Model Content

[0005] The present application provides a coke ash screening device, which solves the technical problem in the related art that when crushing large particles of coke ash, the friction between the screen and the inner wall of the box is insufficient, causing the screen to rotate together with the crushing roller, resulting in a relatively low crushing efficiency of the device for large particles of coke ash.

[0006] The technical solutions adopted in this application are as follows:

[0007] The present application provides a coking ash screening device, comprising a screening drum, a side of the screening drum relative to the ground is fixedly mounted with a support leg and a discharge pipe, a side of the screening drum away from the ground is fixedly mounted with a feeding hopper, an electric cylinder is fixedly mounted at the center of the side of the screening drum away from the ground, a telescopic portion of the electric cylinder extends into the screening drum, the telescopic portion is fixedly connected to a fixed frame, a first motor is fixedly mounted in the fixed frame, an output end of the first motor is fixedly connected to a rotating shaft via a coupling, and an end of the rotating shaft away from the first motor is rotatably connected to a first crushing roller;

[0008] A mounting plate is fixedly installed in the middle of the inner wall of the screening cylinder, a spring rod is fixedly installed on the edge of the mounting plate, a screen is fixedly installed at one end of the spring rod away from the mounting plate, the screen is arranged adjacent to the first crushing roller, and the screen is located directly below the first crushing roller.

[0009] In a feasible embodiment, the device also includes: multiple second motors and multiple second crushing rollers, each second motor is connected to the corresponding second crushing roller through a coupling, the multiple second crushing rollers are symmetrically installed inside the feeding hopper, and the second crushing rollers are rotatably connected to the feeding hopper.

[0010] In a feasible implementation, the rotation axes of the multiple second crushing rollers are located in the same horizontal plane, the rotation directions of two adjacent second crushing rollers are opposite, and the side of the outermost second crushing roller is located at a distance of less than 2 mm from the inner wall of the feeding hopper.

[0011] In a feasible implementation manner, the bottom of the screen is fixedly connected to the output end of the vibration motor.

[0012] In a feasible implementation manner, the fixing portion of the electric cylinder is fixedly connected to the screening drum.

[0013] In a feasible implementation manner, a through hole is opened in the middle of the mounting plate to allow the coking ash to pass through.

[0014] In a feasible implementation manner, the spring rods are distributed in a circular shape with equal intervals at the bottom end of the screen.

[0015] In a feasible implementation manner, the inner wall of the screening drum is conical on the side close to the ground.

[0016] In a feasible implementation manner, the device further comprises a control module and an operation panel fixedly mounted on the outer side wall of the screening drum, and an input end of the control module is communicatively connected with an output end of the operation panel.

[0017] In a feasible implementation manner, the output end of the control module is communicatively connected with the input end of the first motor, the input end of the second motor, the input end of the vibration motor, and the input end of the electric cylinder.

[0018] The beneficial effect of the present application is that when the present application adopts the first crushing roller to crush the large particles of coke ash on the screen, the screen is effectively prevented from rotating together with the first crushing roller by fixing the screen, so that the processing efficiency of the device for large particles of coke ash in the coke ash is improved, thereby improving the overall screening efficiency of the device for coke ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of a coking ash screening device provided in one embodiment of the present application;

[0021] Figure 2 is a cross-sectional view of a screening box in the coking ash screening structure described in the present application;

[0022] Figure 3 It is a structural schematic diagram of the feeding hopper part described in this application;

[0023] Figure 4 It is a top view of the mounting plate portion of the present application;

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Electric cylinder; 2. Feed hopper; 3. Second motor; 4. Operation panel; 5. Screening drum; 6. Support legs; 7. Discharge pipe; 8. Second crushing roller; 9. First crushing roller; 10. Spring rod; 11. Mounting plate; 12. Vibration motor; 13. First motor; 14. Fixed frame; 15. Screen; 16. Rotating shaft; 17. Through hole. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0027] Coke ash refers to the waste generated during the coking process, which contains a large amount of large coke particles and other impurities. In order to screen out these large coke particles and impurities from the coke ash, a coke ash screening device is required. Commonly used screening methods include mechanical screening, wind screening and hydraulic screening. Among them, mechanical screening is the most commonly used method, which uses the aperture size of the screen to screen coke ash of different particle sizes. By adjusting the aperture size of the screen and the screening time, coke ash of different particle size ranges can be separated.

[0028] like Figure 1 As shown, the present application provides a coking ash screening device, the main components of which include: a screening drum 5, supporting legs 6, a discharge pipe 7, a feeding hopper 2, an electric cylinder 1, a fixed frame 14, a first motor 13, a rotating shaft 16 and a first crushing roller 9.

[0029] A support leg 6 and a discharge pipe 7 are fixedly installed on one side of the screening drum 5. The support leg 6 is used to support the screening drum 5 to ensure its stable operation; the discharge pipe 7 is used to discharge the ash after screening. In the specific implementation, the discharge pipe 7 is welded to the middle of the bottom end of the screening drum 5. The bottom end of the screening drum 5 is annularly installed with three support legs 6.

[0030] On the other side of the screening drum 5, a feeding hopper 2 is fixedly installed to facilitate the feeding of the coking ash to be processed into the device. In the specific implementation, the feeding hopper 2 is welded to the feeding port of the screening drum 5.

[0031] In addition, the screening drum 5 is also equipped with an electric cylinder 1, the telescopic part of the electric cylinder 1 extends into the screening drum 5, and the fixed part of the electric cylinder 1 is fixed at the center of the side of the screening drum 5 away from the ground, and the telescopic part of the electric cylinder 1 is fixedly connected to the fixed frame 14. A first motor 13 is installed in the fixed frame 14, and the output end of the first motor 13 is fixedly connected to the rotating shaft 16 through a coupling, and the end of the rotating shaft 16 away from the first motor 13 is rotatably connected to the first crushing roller 9. This design allows the first motor 13 to drive the rotating shaft 16 and the first crushing roller 9 to rotate, thereby crushing and screening the coking ash in the screening drum 5. The first motor 13 drives the rotating shaft 16 and the first crushing roller 9 to rotate, and the large particles of coking ash remaining on the screen 15 after screening can be crushed again.

[0032] In a specific implementation, the fixed part of the electric cylinder 1 is bolted to the screening drum 5, and the telescopic part of the electric cylinder 1 is bolted to the fixing frame 14. The electric cylinder 1 is mainly used to ensure that the first crushing roller 9 can fully contact the upper side of the screen 15 when crushing the coke ash.

[0033] A mounting plate 11 is fixedly mounted in the middle of the inner side wall of the screening cylinder 5, and a spring rod 10 is fixedly mounted on the edge of the mounting plate 11. A screen 15 is fixedly mounted on one end of the spring rod 10 away from the mounting plate 11, and the screen 15 is arranged adjacent to the first crushing roller 9 and is located directly below the first crushing roller 9. This design allows the coke ash crushed by the first crushing roller 9 to be further screened through the screen 15.

[0034] In a specific implementation, the mounting plate 11 is fixedly connected to the screening drum 5 by bolts, and as Figure 2 or Figure 4 As shown, the vertical cross-section of the mounting plate 11 is an L-shaped structure.

[0035] like Figure 2 or Figure 3 As shown, the device further comprises a plurality of second motors 3 and a plurality of second crushing rollers 8. The output end of each second motor 3 is closely connected to its corresponding second crushing roller 8 through a coupling, and this connection mode ensures stable power transmission and efficient energy conversion.

[0036] The second crushing roller 8 is connected to the feeding hopper 2 in a rotational manner, and a plurality of second crushing rollers 8 are symmetrically distributed inside the feeding hopper 2. This layout not only makes the device more beautiful, but also can crush the coking ash more evenly in actual operation.

[0037] The device drives the second crushing roller 8 through the second motor 3, so that multiple second crushing rollers 8 can work simultaneously, and the large particles of coke ash are initially crushed and crushed, which greatly improves the crushing efficiency of the device. In addition, the symmetrically installed second crushing rollers 8 can also ensure that the coke ash is evenly distributed and crushed inside the feeding hopper, thereby avoiding the blockage or uneven wear of the coke ash during the crushing process.

[0038] The rotation axes of the second crushing rollers 8 of the device are located in the same horizontal plane, so that the second crushing rollers 8 can work together to complete the crushing task of the coke ash. When the coke ash enters the crushing area where the second crushing rollers 8 are located through the feeding hopper 2, these second crushing rollers 8 will act on it at the same time, and through their high-speed rotation and mutual friction, the coke ash will be quickly crushed into smaller particles.

[0039] The rotation directions of the two adjacent second crushing rollers 8 are opposite, which can effectively prevent the coke ash from being blocked during the crushing process. When the coke ash is crushed between the second crushing rollers 8, since the adjacent second crushing rollers 8 rotate in opposite directions, they will produce a "squeezing" effect, making the coke ash easier to crush. At the same time, it also helps to evenly distribute the coke ash in the entire crushing area, avoiding the blockage problem caused by excessive accumulation of coke ash in a certain place.

[0040] The distance between the side of the second crushing roller 8 located at the outermost side and the inner wall of the feeding hopper 2 is less than 2 mm, which not only ensures that the coke ash can smoothly enter the inside of the screening cylinder 5, but also prevents larger pieces of coke ash from entering the screening cylinder 5 through the gap between the second crushing roller 8 and the feeding hopper 2, causing the phenomenon of uneven initial crushing. Since the distance between the second crushing roller 8 and the inner wall of the feeding hopper 2 is extremely small, the coke ash will hardly leak into the inside of the screening cylinder 5 during the feeding process, thereby ensuring that larger pieces of coke ash will be crushed by the second crushing roller 8.

[0041] In specific implementation, the device has two second crushing rollers 8 symmetrically arranged in the feeding hopper 2, one of the second crushing rollers 8 rotates clockwise, and the other second crushing roller 8 rotates counterclockwise opposite to it, the two rotate at opposite angles, and a mutual squeezing effect is formed between the two, so that the coking ash fed through the feeding hopper 2 is squeezed by the two second crushing rollers 8 to achieve preliminary crushing.

[0042] Furthermore, if Figure 2 As shown, one of the second crushing rollers 8 rotates at a clockwise angle, and the other second crushing roller 8 rotates at a counterclockwise angle opposite to it. The two rotate at opposite angles, and the effect of mutual extrusion between the two is: the left second crushing roller 8 rotates clockwise, and the right second crushing roller 8 rotates counterclockwise. When the plurality of second crushing rollers 8 rotate simultaneously, there must be two adjacent second crushing rollers 8 that rotate in the following manner: the left second crushing roller 8 rotates clockwise, and the right second crushing roller 8 rotates counterclockwise, and the two together squeeze toward the middle.

[0043] In some embodiments, the bottom of the screen 15 is fixedly connected to the vibration motor 12. The outer edge of the screen 15 is a solid frame, the middle of the screen 15 is a mesh, and the vibration motor 12 is fixedly connected to the solid frame of the screen 15, and the vibration motor 12 is used to provide power for the vibration of the screen 15.

[0044] When the vibration motor 12 is started, the vibration generated is quickly transmitted to the screen 15, so that the coke ash on the screen 15 continuously rolls and jumps under the action of the vibration, so that the coke ash crushed by the first crushing roller 9 can pass through the screen 15 and be discharged through the discharge pipe 7, thereby achieving the purpose of screening. This design method not only has a good screening effect, but also can process coke ash of different particle sizes, and has strong practicality.

[0045] In specific implementation, a through hole 17 is opened in the middle of the mounting plate 11 for the coking ash to pass through. The size of the through hole 17 is the same as the size of the screen 15, ensuring that the coking ash can be smoothly screened out during the screening process. During the screening process, the through hole 17 allows the initially crushed coking ash to enter from the top of the screening drum 5, and after further crushing by the first crushing roller 9 and screening by the screen 15, it is discharged from the bottom.

[0046] At the bottom of the solid frame of the screen 15, spring rods 10 are distributed in a ring shape at equal intervals. These spring rods 10 not only support the screen 15, but also give the screen 15 a certain elasticity. In specific implementation, the spring rods 10 are mainly used to ensure that the screen 15 can vibrate up and down in the vertical direction, and the mounting plate 11 is mainly used to achieve reliable fixation of the spring rods 10.

[0047] In specific implementation, when the first crushing roller 9 produces a certain amount of powder and fragments during the crushing process, the vibration motor 12 generates a vibration force, driving the screen 15 to vibrate together, thereby screening the further crushed powder and fragments. When the coke ash powder passes through the screen, the spring rod 10 can also produce a certain buffering effect, effectively reducing the wear of the screen 15 caused by impact and extending the service life of the screen 15.

[0048] In addition, the equidistant distribution of the spring rods 10 also ensures the stability of the screen 15. Whether in the working process or in the equipment transportation process, the spring rods 10 can provide uniform support force for the screen 15 to prevent the screen 15 from deformation or displacement. This design not only improves the stability of the equipment, but also ensures the accuracy of the screening results.

[0049] Preferably, the inner wall of the screening drum 5 is tapered on the side close to the ground, and the surface of the tapered inner wall is smooth, so that the coking ash that is screened out can be discharged smoothly through the discharge pipe 7.

[0050] In some embodiments, Figure 1As shown, the device also includes a control module and an operation panel 4 fixedly installed on the outer wall of the screening drum 5. The input end of the control module is communicatively connected with the output end of the operation panel 4, and the output end of the control module is communicatively connected with the input end of the first motor 13, the input end of the second motor 3, the input end of the vibration motor 12, and the input end of the electric cylinder 1. When actually operating the device, the user can input control instructions through the operation panel 4, and the control module can control the first motor 13, the second motor 3, the vibration motor 12, and the electric cylinder 1. The control module controls the motor, and can be controlled by PLC, single-chip microcomputer, etc.; or directly operate through the operation panel 4, and control the first motor 13, the second motor 3, the vibration motor 12, and the electric cylinder 1 through the control module to control whether the first motor 13, the second motor 3, the vibration motor 12, and the electric cylinder 1 are powered on, so as to control the first motor 13, the second motor 3, the vibration motor 12, and the electric cylinder 1. This is the prior art and will not be described in detail.

[0051] The working process of this device is as follows:

[0052] When in use, first connect the device to an external power source, then put the coke ash to be screened into the feed hopper 2, and start the second motor 3 and the vibration motor 12. After the second motor 3 is started, it will drive the second crushing roller 8 to rotate to achieve the preliminary crushing of large particles in the coke ash. After the vibration motor 12 is started, the screen 15 will vibrate up and down at a high frequency under the action of the spring rod 10 to achieve the screening of the coke ash. The screened coke ash will be discharged into the external collection container through the discharge pipe 7. After screening for a period of time, the first crushing roller 9 is moved down and onto the screen 15 under the action of the electric cylinder 1, and then the first crushing roller 9 is driven to rotate along the surface of the screen 15 under the action of the motor 2 13, so as to crush the large particles of coke ash on the surface of the screen 15. After crushing, the screen 15 only needs to be vibrated again to screen the crushed coke ash. The fineness of the mesh surface of the screen 15 can be adjusted according to demand.

[0053] The device is provided with a mounting plate 11, and spring rods 10 are fixedly mounted at equal intervals in a circular shape on the outer edge of the mounting plate. The spring rods 10 are fixedly connected to the solid frame of the screen 15 on the side away from the mounting plate 11, which not only ensures that the screen 15 can move flexibly, but also prevents the first crushing roller 9 from driving the screen 15 to rotate together during the rotation process. The device improves the screening efficiency of coke ash. In specific implementation, the diameter of the screen 15 should be slightly smaller than the inner diameter of the screening cylinder 5. The present application installs a second motor 3 and a second crushing roller 8 on the feeding hopper 2, and installs an electric cylinder 1, a first motor 13, a rotating shaft 16 and a first crushing roller 9 in the screening drum 5, so that the screening structure has a double rolling and crushing function when in use, and can achieve sufficient screening of large particles in the coking ash while avoiding clogging of the mesh of the screen 15. Moreover, when crushing the large particles on the screen 15, the screen is fixed, which effectively avoids the screen 15 from rotating with the first crushing roller 9, so that the processing efficiency of the device for large particles in the coking ash is improved, thereby improving the overall screening efficiency of the device for the coking ash.

[0054] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0055] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A coke ash screening device, comprising a screening drum (5), wherein a support leg (6) and a discharge pipe (7) are fixedly mounted on one side of the screening drum (5) relative to the ground, It is characterized in that A feeding hopper (2) is fixedly installed on the side of the screening drum (5) away from the ground, an electric cylinder (1) is fixedly installed at the center of the side of the screening drum (5) away from the ground, a telescopic portion of the electric cylinder (1) extends into the screening drum (5), the telescopic portion is fixedly connected to a fixed frame (14), a first motor (13) is fixedly installed in the fixed frame (14), an output end of the first motor (13) is fixedly connected to a rotating shaft (16) via a coupling, and an end of the rotating shaft (16) away from the first motor (13) is rotatably connected to a first crushing roller (9); A mounting plate (11) is fixedly mounted in the middle of the inner wall of the screening cylinder (5), a spring rod (10) is fixedly mounted on the edge of the mounting plate (11), a screen (15) is fixedly mounted on one end of the spring rod (10) away from the mounting plate (11), the screen (15) is arranged adjacent to the first crushing roller (9), and the screen (15) is located directly below the first crushing roller (9).

2. A coking ash screening device as claimed in claim 1, It is characterized in that The device further comprises: a plurality of second motors (3) and a plurality of second crushing rollers (8), each second motor (3) being connected to a corresponding second crushing roller (8) via a coupling, the plurality of second crushing rollers (8) being symmetrically mounted inside the feeding hopper (2), and the second crushing rollers (8) being rotationally connected to the feeding hopper (2).

3. A coking ash screening device as claimed in claim 2, It is characterized in that The rotation axes of the plurality of second crushing rollers (8) are located in the same horizontal plane, the rotation directions of two adjacent second crushing rollers (8) are opposite, and the distance between the side surface of the outermost second crushing roller (8) and the inner wall of the feeding hopper (2) is less than 2 mm.

4. A coking ash screening device as claimed in claim 1, It is characterized in that The bottom of the screen (15) is fixedly connected to the output end of the vibration motor (12).

5. A coking ash screening device as claimed in claim 1, It is characterized in that The fixed part of the electric cylinder (1) is fixedly connected to the screening drum (5).

6. A coking ash screening device as claimed in claim 1, It is characterized in that A through hole (17) is provided in the middle of the mounting plate (11) for the coking ash to pass through.

7. A coking ash screening device as claimed in claim 1, It is characterized in that The spring rods (10) are distributed in a circular shape at equal intervals at the bottom end of the screen (15).

8. A coking ash screening device as claimed in claim 1, It is characterized in that The inner wall of the screening cylinder (5) is conical on the side close to the ground.

9. A coking ash screening device as claimed in claim 2, It is characterized in that The device further comprises a control module and an operating panel (4) fixedly mounted on the outer wall of the screening drum (5), wherein the input end of the control module is communicatively connected with the output end of the operating panel (4).

10. A coking ash screening device as claimed in claim 9, It is characterized in that The output end of the control module is communicatively connected to the input end of the first motor (13), the input end of the second motor (3), the input end of the vibration motor (12), and the input end of the electric cylinder (1).

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