Coke crushing and screening device
By setting up a vibration removal mechanism driven by anti-blocking unit and a driving motor in the coke crushing screening device, the problem of clogging of the cylinder screen screen hole is solved, the screening efficiency and quality of coke is improved, and it is suitable for the production of silicon-manganese alloys.
Patent Information
- Application Number
- CN202420056238.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The existing drum screens are prone to clogging of screen holes during coke screening, resulting in a decrease in screening efficiency and the inability to effectively utilize different particle sizes of coke.
A coke crushing screening device is designed, including a crusher, a conveyor belt and a drum screen. An anti-blocking unit is installed on the drum screen. The rotating shaft and the knocking unit are driven by the driving motor, and the coke particles stuck in the screen hole are removed by vibration. Ensure effective utilization of the screen hole.
The screening efficiency and quality of coke are improved, the screen hole utilization rate of the drum screen is ensured, and the effective utilization rate of coke is improved, and it is suitable for the production of silicon-manganese alloys.
Smart Images
Figure CN222240690U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of silicon-manganese alloy production, and in particular to a coke crushing and screening device. Background Art
[0002] Silicon manganese alloy products are desulfurizers, deoxidizers, and alloy additives for steelmaking. They are strong and easy to break. A large amount of coke is needed as a reducing agent in the production of silicon manganese alloy, and the quality of coke is very sensitive. If the coke is not graded, the large pieces of coke will not burn fully, and a large number of small pieces and broken cokes will not be used, which not only reduces the effective utilization rate of coke, but also increases consumption. Therefore, it is usually necessary to crush and screen the coke to obtain a suitable particle size for the production of silicon manganese alloy.
[0003] The drum screen is a commonly used screening device for coke screening. It is used to screen and classify the crushed coke from a mixed state of different sizes according to the particle size specifications. Therefore, there is an urgent need for a coke screening device. During the screening process, the drum screen rotates around the axis of the cylinder, the unscreened coke is fed in from one end of the cylinder, the fine-grade material passes through the sieve holes on the cylindrical working surface, and the coarse-grained material is discharged from the other end of the cylinder. However, during this process, the drum screen is in a rotating state, and it is inevitable that coke particles are stuck in the sieve holes of the drum screen, and it is not easy to fall off, resulting in the sieve holes being blocked, which greatly reduces the screening efficiency of the coke. Utility Model Content
[0004] The present application provides a coke crushing and screening device to solve the above-mentioned problems mentioned in the background technology.
[0005] The present application provides a coke crushing and screening device, comprising: a crusher, a conveyor belt and a drum screen, wherein the discharge port of the crusher is located at the upper end of the conveyor belt, and the output end of the conveyor belt is located above the feed port of the drum screen.
[0006] The drum screen is tilted on the frame, and a feed trough is provided at the higher end of the drum screen. The feed trough is located below the output end of the conveyor belt and is fixed on the frame through a support rod. One end of the central rotating shaft of the drum screen is connected to the output end of the first drive motor, and the other end of the central rotating shaft is rotatably connected to a bearing arranged on the frame, and the first drive motor is arranged on the frame.
[0007] An anti-blocking unit is also provided above the drum screen, and the anti-blocking unit includes a fixed frame, a rotating shaft, a second driving motor and a plurality of knocking units. The fixed frame is fixedly provided on the frame, the second driving motor is provided on the fixed frame, one end of the rotating shaft is connected to the output end of the second driving motor, the other end of the rotating shaft is rotatably connected to a bearing provided on the fixed frame, and the plurality of knocking units are provided on the outside of the rotating shaft, and the length of the knocking unit is greater than or equal to the vertical distance between the top of the outer wall of the drum screen and the rotating shaft.
[0008] Optionally, the striking unit includes a rib plate, a spring and a striking ball.
[0009] One end of the rib plate is connected to the outer side of the rotating shaft, the end of the rib plate away from the rotating shaft is connected to one end of the spring, and the other end of the spring is connected to a knocking ball.
[0010] Optionally, the length of the rib plate is less than the vertical distance between the top of the outer wall of the drum screen and the rotating shaft, and the sum of the lengths of the rib plate, the spring and the knocking ball is greater than or equal to the vertical distance between the top of the outer wall of the drum screen and the rotating shaft.
[0011] Optionally, the central rotation axis is arranged parallel to the rotation axis.
[0012] Optionally, the first drive motor and the second drive motor rotate in the same direction.
[0013] Optionally, the diameter of the screen holes of the drum screen gradually increases from the upper end to the lower end along the inclined direction.
[0014] Optionally, a material guiding spiral is coaxially arranged inside the drum screen, and the material guiding spiral is connected to the inner wall of the drum screen.
[0015] Optionally, a plurality of aggregate troughs are provided at the bottom of the drum screen, and a top opening of each aggregate trough is vertically aligned with sieve holes of different apertures on the drum screen.
[0016] The coke crushing and screening device provided in the present application realizes efficient screening of crushed coke, and has the following beneficial effects compared with the prior art:
[0017] (1) By setting a first driving motor, the central rotating shaft is driven to rotate under the drive of the first driving motor, and then the central rotating shaft drives the drum screen to rotate, so as to achieve the screening of the coke to be screened. By setting an anti-blocking unit, the coke particles stuck in the sieve holes of the drum screen are allowed to fall off, which helps to ensure the effective utilization rate of the sieve holes of the drum screen and improve the screening efficiency. By setting a rotating shaft, a second driving motor and a plurality of knocking units, while the rotating shaft rotates, the plurality of knocking units rotate with the rotating shaft, and play a knocking role on the outer wall of the drum screen, so that the coke particles stuck in the sieve holes of the drum screen are vibrated and fall off from the sieve holes under the action of vibration, so as to achieve the removal of the sieve holes. The utilization rate of the sieve holes of the drum screen is improved, the screening efficiency of the coke is improved, and then the quality of the coke is improved. The screened coke is selected as a suitable particle coke for the production of silicon-manganese alloy, which can improve the quality of silicon-manganese alloy.
[0018] (2) The striking unit includes a rib plate, a spring and a striking ball. The rib plate is used to support the spring to prevent the striking unit from being entangled on the rotating shaft during rotation. The spring connects the rib plate and the striking ball, and based on its own elastic deformation characteristics, it facilitates the contraction and extension of the striking unit, thereby improving the stable operation of the striking unit. The striking ball has a certain weight and can vibrate the outer wall of the drum screen when in contact with the outer wall of the drum screen, thereby facilitating the stuck coke to fall off from the sieve hole.
[0019] (3) The length of the rib plate is less than the vertical distance between the top of the outer wall of the drum screen and the rotating shaft, which facilitates the movement of the knocking unit and avoids the rib plate from contacting the outer wall of the drum screen during rotation to generate resistance and increase the operating load of the second drive motor. The sum of the lengths of the rib plate, spring and knocking ball is greater than or equal to the vertical distance between the outer wall of the drum screen and the rotating shaft, which can increase the force applied by the knocking ball to the outer wall of the drum screen, improve the efficiency of the coke stuck in the sieve hole to fall off, and thus improve the screening efficiency of the coke. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 A schematic diagram of the structure of a coke crushing and screening device provided in one embodiment of the present application;
[0022] Figure 2 A schematic diagram of the structure of a drum screen provided in one embodiment of the present application;
[0023] Figure 3 A schematic diagram of the structure of a drum screen provided in another embodiment of the present application;
[0024] Description of reference numerals:
[0025] 1: crusher, 2: conveyor belt, 3: drum screen, 4: frame, 6: guide screw, 7: aggregate trough, 310: feed trough, 320: support rod, 330: central shaft, 340: first drive motor, 510: fixed frame, 520: shaft, 530: second drive motor, 540: knocking unit, 541: rib plate, 542: spring, 543: knocking ball. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are 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 this field without creative work also fall within the scope of protection of the present application.
[0027] like Figure 1 As shown, the present application provides a coke crushing and screening device, comprising: a crusher 1, a conveyor belt 2 and a drum screen 3, the discharge port of the crusher 1 is located at the upper end of the conveyor belt 2, and the output end of the conveyor belt 2 is located above the feed port of the drum screen 3.
[0028] The drum screen 3 is tiltedly arranged on the frame 4, and a feed trough 310 is arranged at the higher end of the drum screen 3. The feed trough 310 is located below the output end of the conveyor belt 2 and is fixed on the frame 4 through a support rod 320. One end of the central rotating shaft 330 of the drum screen 3 is connected to the output end of the first drive motor 340, and the other end of the central rotating shaft 330 is rotatably connected to a bearing arranged on the frame 4, and the first drive motor 340 is arranged on the frame 4.
[0029] An anti-blocking unit is also provided above the drum screen 3, and the anti-blocking unit includes a fixed frame 510, a rotating shaft 520, a second drive motor 530 and a plurality of knocking units 540. The fixed frame 510 is fixedly provided on the frame 4, the second drive motor 530 is provided on the fixed frame 510, one end of the rotating shaft 520 is connected to the output end of the second drive motor 530, and the other end of the rotating shaft 520 is rotatably connected to a bearing provided on the fixed frame 510, and the plurality of knocking units 540 are provided on the outside of the rotating shaft 520, and the length of the knocking unit is greater than or equal to the vertical distance between the top of the outer wall of the drum screen 3 and the rotating shaft 520.
[0030] Specifically, the crusher 1 is used to crush coke of different particle sizes, and the conveyor belt 2 is used to convey the crushed coke to the drum screen 3, and the drum screen 3 screens the crushed coke in a rolling state. The drum screen 3 is tilted, and the coke to be screened enters from the higher end of the drum screen 3, and will move downward along the tilt direction of the drum screen 3 in a rolling state while being screened under the action of the screen of the drum screen 3. The coke that can pass through the screen falls from the screen, and the coke that cannot pass through the screen is discharged from the lower end of the drum screen 3, thereby achieving the screening of the coke.
[0031] A feed trough 310 is provided at the higher end of the drum screen 3, and the feed trough 310 is located below the output end of the conveyor belt 2, so as to facilitate the feeding of the coke to be screened after crushing into the drum screen 3. The frame 4 is used to support the drum screen 3. One end of the central rotating shaft 330 of the drum screen 3 along the length direction is connected to the first driving motor 340, and the other end is rotatably connected to the bearing provided on the frame 4, so that under the drive of the first driving motor 340, the central rotating shaft 330 is driven to rotate, and the central rotating shaft 330 is connected to the inner wall of the drum screen 3 through a reinforcing rod, so that the central rotating shaft 330 drives the drum screen 3 to rotate, so as to realize the screening of the coke to be screened.
[0032] The anti-blocking unit makes the coke particles stuck in the sieve holes of the drum screen 3 fall off, which helps to ensure the effective utilization rate of the sieve holes of the drum screen 3 and improve the screening efficiency. The anti-blocking unit includes a fixed frame 510, a rotating shaft 520, a second drive motor 530 and a plurality of knocking units 540. The fixed frame 510 is fixedly arranged on the frame 4, and the second drive motor 530 is arranged on the fixed frame 510, and the fixed frame 510 supports and fixes the second drive motor 530. The output end of the second drive motor 530 is connected to one end of the rotating shaft 520, and the other end of the rotating shaft 520 is rotatably connected to a bearing arranged on the fixed frame 510. The second driving motor 530 provides power to drive the rotating shaft 520 to rotate. At the same time, multiple knocking units 540 are arranged on the outer side of the rotating shaft 520. When the rotating shaft 520 rotates, the multiple knocking units 540 rotate with the rotating shaft 520. During the rotation process, the multiple knocking units 540 contact the outer wall of the drum screen 3. When the multiple knocking units 540 contact the outer wall of the drum screen 3, they have a certain speed driven by the rotating shaft 520. Therefore, when the multiple knocking units 540 contact the outer wall of the drum screen 3, a certain force is applied to the outer wall of the drum screen 3, and the outer wall of the drum screen 3 is knocked and vibrated. The coke particles stuck in the sieve hole of the cylindrical screen 3 are vibrated and fall off from the sieve hole under the action of vibration, so as to realize the removal of the sieve hole, which is conducive to the sieve hole of the drum screen 3. The sieve hole is used as much as possible during the screening process, the screening efficiency of coke is improved, and the quality of coke is improved. The screening coke is selected as a suitable particle coke for the production of silicon-manganese alloy, which can improve the quality of silicon-manganese alloy.
[0033] Among them, the length of the knocking unit 540 is greater than or equal to the vertical distance between the top of the outer wall of the drum screen 3 and the rotating shaft 520, in order to ensure the contact between the knocking unit 540 and the outer wall of the drum screen 3, to better knock the outer wall of the drum screen 3, and to increase the falling off of the coke stuck in the sieve hole of the cylindrical screen 3.
[0034] Furthermore, the knocking unit 540 is made of a material with a certain hardness and can be bent, such as a rubber strip, so that when the knocking unit 540 contacts the outer wall of the drum screen 3, it not only knocks the drum screen 3, but also needs to be able to bend when continuing to move after the knocking, so as to pass the distance between the rotating shaft 520 and the outer wall of the drum screen 3. At the same time, the knocking unit 540 will not be entangled on the rotating shaft 520 during the rotation process.
[0035] The present application realizes the screening of coke after crushing through the above scheme. By setting the first driving motor, the central rotating shaft is driven to rotate under the drive of the first driving motor, and then the central rotating shaft drives the drum screen to rotate, so as to realize the screening of the coke to be screened. The anti-blocking unit is set to make the coke particles stuck in the sieve hole of the drum screen fall off, which helps to ensure the effective utilization rate of the sieve hole of the drum screen and improve the screening efficiency. By setting the rotating shaft, the second driving motor and a plurality of knocking units, while the rotating shaft rotates, the plurality of knocking units rotate with the rotating shaft, and the outer wall of the drum screen is knocked, so that the coke particles stuck in the sieve hole of the drum screen are vibrated and fall off from the sieve hole under the action of vibration, so as to realize the removal of the sieve hole. The utilization rate of the sieve hole of the drum screen is improved, the screening efficiency of the coke is improved, and then the quality of the coke is improved. The coke after screening is selected to be suitable for the production of silicon-manganese alloy, which can improve the quality of silicon-manganese alloy.
[0036] The coke crushing and screening device of the present application can also be used for rotary screening of other solid particles. Figure 2 As shown, optionally, the striking unit 540 includes a rib plate 541 , a spring 542 and a striking ball 543 .
[0037] One end of the rib plate 541 is connected to the outer side of the rotating shaft 520 , and one end of the rib plate 541 away from the rotating shaft 520 is connected to one end of the spring 542 . The other end of the spring 542 is connected to a striking ball 543 .
[0038] Specifically, the rib plate 541 is used to support the spring 542 to prevent the knocking unit 540 from being entangled on the rotating shaft 520 during the rotation process. The spring 542 connects the rib plate 541 and the knocking ball 543, and based on its own elastic deformation characteristics, it facilitates the contraction and extension of the knocking unit 540, thereby improving the stable operation of the knocking unit 540. The knocking ball 543 has a certain weight, and can vibrate the outer wall of the drum screen 3 when it contacts the outer wall of the drum screen 3, so that the clamped coke can fall off from the screen hole.
[0039] The spring 542 has a certain elastic deformation. When the knocking unit 540 rotates with the rotating shaft 520, the spring 542 is subjected to the centrifugal force and gravity. At this time, the spring 542 stretches outward or has a tendency to pull outward. When the knocking unit 540 rotates until the knocking ball 543 contacts the outer wall of the drum screen 3, the spring 542 stretches again under the gravity of the knocking ball 543, and then contracts, and continues to rotate through the distance between the rotating shaft 520 and the outer wall of the drum screen 3. The elastic deformation of the spring 542 can not only increase the knocking force of the knocking ball 543 on the outer wall of the drum screen 3, but also produce telescopic deformation, which is convenient for the rotation of the knocking unit 540.
[0040] Among them, the force applied by the knocking ball 543 to the outer wall of the drum screen 3 is determined by the output frequency of the second drive motor 530, the weight of the knocking ball 543 and the properties of the spring 542. It is set according to the actual working conditions and is not limited in this application.
[0041] Optionally, the length of the rib plate 541 is smaller than the vertical distance between the top of the outer wall of the drum screen 3 and the rotating shaft 520, and the sum of the lengths of the rib plate 541, the spring 542 and the knocking ball 543 is greater than or equal to the vertical distance between the top of the outer wall of the drum screen 3 and the rotating shaft 520.
[0042] Specifically, the length of the rib plate 541 is less than the vertical distance between the top of the outer wall of the drum screen 3 and the rotating shaft 520, which facilitates the movement of the knocking unit 540, avoids the rib plate 541 from contacting the outer wall of the drum screen 3 during the rotation process to generate resistance, and increases the operating load of the second drive motor 530. The sum of the lengths of the rib plate 541, the spring 542 and the knocking ball 543 is greater than or equal to the vertical distance between the outer wall of the drum screen 3 and the rotating shaft 520, which can increase the force of the knocking ball 543 on the outer wall of the drum screen 3, improve the efficiency of the coke stuck in the sieve hole to fall off, and then improve the screening efficiency of the coke.
[0043] Optionally, the central rotation axis 330 is arranged parallel to the rotation axis 520 .
[0044] Specifically, such an arrangement enables the same force to be applied to the outer wall of the drum screen 3 when the multiple knocking units 540 rotate, thereby preventing the outer wall of the drum screen 3 from being deformed or damaged due to uneven force in local areas subjected to excessive force during long-term use, which is beneficial to the long-term stable operation of the drum screen 3.
[0045] Optionally, the first driving motor 340 and the second driving motor 530 rotate in the same direction.
[0046] Specifically, when the multiple knocking units 540 rotate to the bottom (below the rotating shaft 520) and contact the top of the outer wall of the drum screen 3, the rotation directions of the two are opposite, so that the multiple knocking units 540 knock the outer wall of the drum screen 3 with greater force, which facilitates the removal of blocked coke.
[0047] Optionally, the diameter of the screen holes of the drum screen 3 gradually increases from the upper end to the lower end along the inclined direction.
[0048] Specifically, after the crushed coke enters the drum screen 3, on the one hand, it is screened as the drum screen 3 rotates, and on the other hand, the coke with large particle size flows forward along the slope of the drum screen 3 and is gradually screened out through the sieve holes of different apertures. The aperture of the sieve holes gradually increases along the inclined direction, so that after the coke enters the drum screen 3, the coke with small particles is first screened out, and then the large particles are gradually screened out. If the large particles are screened out first, the small particles will also be screened together, and the screening of coke with different particle sizes cannot be achieved.
[0049] like Figure 3 As shown, optionally, a material guiding screw 6 is coaxially arranged inside the drum screen 3 , and the material guiding screw 6 is connected to the inner wall of the drum screen 3 .
[0050] Specifically, during the rotation of the drum screen 3 , the guide screw 6 guides the coke inside the drum screen 3 , accelerates the movement of the coke inside the drum screen 3 , and further accelerates the screening of the coke.
[0051] like Figure 3 As shown, optionally, a plurality of aggregate troughs 7 are provided at the bottom of the drum screen 3 , and the top opening of each aggregate trough 7 is aligned with the sieve holes of different apertures on the drum screen 3 in the vertical direction.
[0052] Specifically, the aggregate trough 7 is used to collect the screened coke. The aggregate trough 7 is correspondingly arranged at the lower part of the sieve holes of different apertures of the drum screen 3. After the screening is completed, coke with similar particle size will be collected in each aggregate trough 7, completing the screening of the crushed coke, so that the coke can be collected according to different specifications for easy use.
[0053] The technical solution of the present application is described in detail below with reference to specific embodiments.
[0054] The coke crushing and screening device in this embodiment has the following operation flow during specific operation:
[0055] The coke is crushed by the crusher 1, and the crushed coke is transported by the conveyor belt 2. The feed trough 310 is located below the output end of the conveyor belt 2 and is fixed on the frame 4 through the support rod 320. The crushed coke is transported to the drum screen 3 through the feed trough 310 through the output end of the conveyor belt 2. Under the drive of the first drive motor 340, the central shaft 330 is driven to rotate, and the central shaft 330 drives the drum screen 3 to rotate. The drum screen 3 is tilted, and the coke to be screened enters from the higher end of the drum screen 3. It will move downward along the tilt direction of the drum screen 3 in a rolling state, and be screened under the action of the screen of the drum screen 3. The coke that can pass through the screen falls from the screen, and the coke that cannot pass through the screen is discharged from the lower end of the drum screen 3. At the same time, the guide screw 6 guides the coke inside the drum screen 3 during the rotation of the drum screen 3, accelerates the movement of the coke inside the drum screen 3, and realizes the screening of the coke. A plurality of aggregate troughs 7 are provided at the bottom of the drum screen 3, and the top opening of each aggregate trough 7 is vertically aligned with the sieve holes of different apertures on the drum screen 3. After the screening is completed, coke with similar particle sizes will be collected in each aggregate trough 7, completing the screening of the crushed coke, so that the coke can be classified and collected according to different specifications for easy use.
[0056] During the screening process, an anti-blocking unit is provided above the drum screen 3, so that the coke particles stuck in the sieve holes of the cylindrical screen 3 fall off. The second driving motor 530 provides power to drive the rotating shaft 520 to rotate. While the rotating shaft 520 rotates, the rib plate 541 in the knocking unit 540 rotates with the rotating shaft 520, and during the rotation process, the spring 542 and the knocking ball 543 also rotate with the rib plate 541. When the knocking unit 540 rotates until the knocking ball 543 contacts the outer wall of the drum screen 3, a certain force is applied to the outer wall of the drum screen 3, and the outer wall of the drum screen 3 is knocked and vibrated. The coke particles stuck in the sieve holes of the cylindrical screen 3 are vibrated and fall off from the sieve holes under the action of vibration, so that the sieve holes are cleared.
[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A coke crushing and screening device, characterized in that: include: A crusher (1), a conveyor belt (2) and a drum screen (3), wherein the discharge port of the crusher (1) is located at the upper end of the conveyor belt (2), and the output end of the conveyor belt (2) is located above the feed port of the drum screen (3); The drum screen (3) is arranged obliquely on the frame (4); a feed trough (310) is arranged at a higher end of the drum screen (3); the feed trough (310) is located below the output end of the conveyor belt (2) and is fixedly arranged on the frame (4) via a support rod (320); one end of a central rotating shaft (330) of the drum screen (3) is connected to an output end of a first drive motor (340); the other end of the central rotating shaft (330) is rotatably connected to a bearing arranged on the frame (4); and the first drive motor (340) is arranged on the frame (4); An anti-blocking unit is also provided above the drum screen (3), and the anti-blocking unit comprises a fixed frame (510), a rotating shaft (520), a second drive motor (530) and a plurality of knocking units (540); the fixed frame (510) is fixedly arranged on the frame (4), the second drive motor (530) is arranged on the fixed frame (510), one end of the rotating shaft (520) is connected to the output end of the second drive motor (530), and the other end of the rotating shaft (520) is rotatably connected to a bearing arranged on the fixed frame (510), and the plurality of knocking units (540) are arranged on the outside of the rotating shaft (520), and the length of the knocking unit is greater than or equal to the vertical distance between the top of the outer wall of the drum screen (3) and the rotating shaft (520).
2. The coke crushing and screening device according to claim 1, characterized in that: The knocking unit (540) comprises a rib plate (541), a spring (542) and a knocking ball (543); One end of the rib plate (541) is connected to the outer side of the rotating shaft (520), one end of the rib plate (541) away from the rotating shaft (520) is connected to one end of the spring (542), and the other end of the spring (542) is connected to a striking ball (543).
3. The coke crushing and screening device according to claim 2, characterized in that: The length of the rib plate (541) is less than the vertical distance between the top of the outer wall of the drum screen (3) and the rotating shaft (520), and the sum of the lengths of the rib plate (541), the spring (542) and the striking ball (543) is greater than or equal to the vertical distance between the top of the outer wall of the drum screen (3) and the rotating shaft (520).
4. The coke crushing and screening device according to claim 1, characterized in that: The central rotation axis (330) is arranged in parallel with the rotation axis (520).
5. The coke crushing and screening device according to claim 1, characterized in that: The first drive motor (340) and the second drive motor (530) have the same rotation direction.
6. The coke crushing and screening device according to claim 1, characterized in that: The diameter of the screen holes of the drum screen (3) gradually increases from the upper end to the lower end along the inclined direction.
7. The coke crushing and screening device according to claim 1, characterized in that: A material guiding spiral (6) is coaxially arranged inside the drum screen (3), and the material guiding spiral (6) is connected to the inner wall of the drum screen (3).
8. The coke crushing and screening device according to any one of claims 1 to 7, characterized in that: A plurality of aggregate troughs (7) are provided at the bottom of the drum screen (3), and the top opening of each aggregate trough (7) is vertically aligned with sieve holes of different apertures on the drum screen (3).