Graphite electrode raw material screening apparatus

Abstract

The application discloses graphite electrode raw material screening equipment and belongs to the technical field of graphite electrode processing. The graphite electrode raw material screening equipment comprises a box body, a feeding pipe installed on the top of the box body, a box body door rotatably installed on the box body, a motor installed on one side of the box body, a screening net installed on the output end of the motor, a second connecting plate installed below the screening net, a lifting mechanism arranged on the second connecting plate, a first connecting plate installed on one end of the lifting mechanism, an elastic telescopic rod installed on the first connecting plate, and a connecting block installed on one end of the elastic telescopic rod. The raw material is added into the box body through the feeding pipe, the vibration motor is started to drive the screening net to vibrate and screen in cooperation with the elastic telescopic rod, the fan is started to suck the powder generated during screening into the powder collecting box for collection after filtration through the filter screen, the air inlet pipe is arranged to simultaneously suck the powder above the screening net and the powder passing through the screening net, and the collection effect is improved.

Description

Technical Field

[0001] This invention relates to screening equipment, and in particular to screening equipment for graphite electrode raw materials, belonging to the field of graphite electrode processing technology. Background Technology

[0002] Graphite electrodes are high-temperature resistant graphite conductive materials made from petroleum coke and pitch coke as aggregates and coal tar pitch as binders. The process involves calcining, crushing and grinding, batching, mixing, molding, baking, impregnation, graphitization, and machining of raw materials. During processing, the raw materials need to be crushed using a crusher, and the crushed raw materials are then screened using a screening device to separate the raw materials into different sizes. Unqualified raw materials are crushed again.

[0003] In actual use, the existing graphite electrode raw material screening equipment contains a large amount of powder in the crushed raw material. This powder is easy to float in the screening box during screening, which will affect the cleanliness of the screening box. When the box is opened, it is easy for workers to inhale it, which will affect their health. Summary of the Invention

[0004] The main objective of this invention is to solve the problem of not being able to collect the powder that floats during sieving.

[0005] The objective of this invention can be achieved by adopting the following technical solution:

[0006] A graphite electrode raw material screening device includes a housing and a feeding pipe installed on the top of the housing. A housing door is rotatably mounted on the housing. A motor is installed on one side of the housing, and a screening screen is installed at the output end of the motor. A second connecting plate is installed below the screening screen, and a lifting mechanism is provided on the second connecting plate. A first connecting plate is installed at one end of the lifting mechanism. An elastic telescopic rod is installed on the first connecting plate, and a connecting block is installed at one end of the elastic telescopic rod. A vibration motor is installed on the first connecting plate. A discharge plate is installed at an angle inside the housing, and a discharge trough that cooperates with the discharge plate is opened on the housing. A powder collection box is located on the back of the housing, and the powder collection box is connected to the housing through multiple air inlet pipes. A filter screen is installed inside the powder collection box, and an air duct is installed on the powder collection box. A fan is installed on the air duct. A second insertion rod is installed at the bottom of the screening screen, and a second slot that cooperates with the second insertion rod is opened on the connecting block. A limit mechanism is installed inside the housing.

[0007] Preferably, the limiting mechanism includes a first electric telescopic rod, a first electromagnet, a limiting frame, and a first iron block. The first electric telescopic rod is installed on the top of the inner wall of the box. The output end of the first electric telescopic rod is provided with a first electromagnet. A limiting frame is provided below the first electromagnet. A first iron block adapted to the first electromagnet is installed on the top of the limiting frame.

[0008] Preferably, a first insert block is installed on the top of the screening screen, a first slot is provided on the limiting frame to cooperate with the first insert block, a second electromagnet is installed on the first insert block, and a second iron block is installed inside the slot.

[0009] Preferably, the lifting mechanism includes a protective outer rod, a protective inner rod, and a second electric telescopic rod. The protective outer rod is installed on the second connecting plate, and the second electric telescopic rod is installed inside the protective outer rod. The protective inner rod is installed at the output end of the second electric telescopic rod, and the top of the protective inner rod is connected to the bottom of the first connecting plate.

[0010] Preferably, the elastic telescopic rod includes an outer rod, an inner rod, and a spring. The outer rod is installed on the first connecting plate, the spring is installed inside the outer rod, the inner rod is installed at one end of the spring, and one end of the inner rod is connected to the bottom of the connecting block.

[0011] Preferably, the housing is connected to the housing door via a hinge, the housing door is provided with an observation window, and the housing door is equipped with a first handle.

[0012] Preferably, a connecting frame is installed on one side of the box, and a first support leg is installed on the connecting frame and the bottom of the box. A collection box is slidably installed on the connecting frame.

[0013] Preferably, a slider is installed at the bottom of the collection box, a groove is provided on the connecting frame to cooperate with the slider, and a second handle is installed on the collection box.

[0014] Preferably, a placement plate is installed on one side of the connecting frame, an electric slide rail is installed on the placement plate, a push rod is installed on the electric slide rail, a first insert rod is installed on the push rod, a partition is provided on the placement plate, a first slot that cooperates with the first insert rod is opened on the partition, a second insert block is installed at one end of the partition, a second slot that cooperates with the second insert block is opened on the collection box, a plurality of second support legs are installed at the bottom of the placement plate, and a third handle is installed at one end of the partition.

[0015] Preferably, a rotating block is installed at one end of the screening screen, a rotating groove is provided on the housing to cooperate with the rotating block, a plurality of rotating cavities are provided on the rotating block, and ball bearings are rotatably installed inside the rotating cavities.

[0016] The beneficial technical effects of this invention are as follows: According to the graphite electrode raw material screening equipment of this invention, the raw material is added to the box through the feeding pipe. The vibrating motor starts and drives the screening screen in conjunction with the elastic telescopic rod to vibrate and screen. The fan starts and can suck the powder generated during screening into the powder collection box, where it is filtered and collected. By setting an air inlet pipe, powder above and passing through the screening screen can be simultaneously sucked up, improving the collection effect. By setting a second electric telescopic rod, the second electric telescopic rod starts and drives the first connecting plate to descend, thereby separating the elastic telescopic rod and the vibrating motor from the screening screen. The motor starts and drives the screening screen to rotate, discharging unqualified raw materials from the screening screen. By setting protective outer rods and inner rods, it is possible to prevent powder from falling onto the second electric telescopic rod and causing damage. By setting a first electric telescopic rod, the first electric telescopic rod is activated, driving the limit frame to descend and inserting the first insert into the limit frame, thus installing the limit frame on the screening screen. The second electromagnet is activated, causing the second electromagnet to attract the second iron block, thus fixing the installed limit frame. By setting a first electromagnet, the first electromagnet is deactivated, and the first electric telescopic rod separates from the limit frame, thus enabling the limit frame to limit the raw materials on the screening screen, preventing unqualified raw materials from being discharged from the screening screen along with qualified raw materials, and enabling the limit frame to move with the screening screen. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the box in a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the first iron block structure according to a preferred embodiment of the graphite electrode raw material screening device of the present invention;

[0020] Figure 4 This is a schematic diagram of the partition structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0021] Figure 5 This is a schematic diagram of the filter screen structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0022] Figure 6 This is a schematic diagram of the rotating block structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0023] Figure 7 This is a schematic diagram of the second insert structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0024] Figure 8 This is a schematic diagram of the spring structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention;

[0025] Figure 9 This is a schematic diagram of the second iron block structure according to a preferred embodiment of the graphite electrode raw material screening device of the present invention;

[0026] Figure 10 This is a schematic diagram of the first insert structure of a preferred embodiment of the graphite electrode raw material screening device according to the present invention.

[0027] In the diagram: 1. Box body; 2. Box door; 3. Observation window; 4. Motor; 5. First handle; 6. Connecting frame; 7. Collection box; 8. Second handle; 9. Slider; 10. Feeding pipe; 11. First support leg; 12. Limiting frame; 13. First electric telescopic rod; 14. First electromagnet; 15. Air inlet pipe; 16. Screening screen; 17. First insert block; 18. Second electromagnet; 19. Outer rod; 20. Inner rod; 21. Connecting block; 22. Protective outer rod; 23. First connecting plate; 24. 25. Protective inner rod; 26. Second connecting plate; 27. Discharge plate; 28. First iron block; 29. ​​Partition plate; 30. Placement plate; 31. Electric slide rail; 32. Push rod; 33. First insertion rod; 34. Second insertion block; 35. Second support leg; 36. Powder collection box; 37. Air duct; 38. Fan; 39. Filter screen; 40. Rotating block; 41. Ball bearing; 42. Vibration motor; 43. Second insertion rod; 44. Spring; 45. Second electric telescopic rod; 46. Second iron block; 47. Third handle. Detailed Implementation

[0028] To enable those skilled in the art to understand the technical solution of the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0029] like Figures 1-10As shown, the graphite electrode raw material screening equipment provided in this embodiment includes a housing 1 and a feeding pipe 10 installed on the top of the housing 1. A housing door 2 is rotatably installed on the housing 1. A motor 4 is installed on one side of the housing 1. A screening screen 16 is installed at the output end of the motor 4. A rotating block 39 is installed at one end of the screening screen 16. A rotating groove that cooperates with the rotating block 39 is opened on the housing 1. Multiple rotating cavities are opened on the rotating block 39. Ball bearings 40 are rotatably installed inside the rotating cavities. A second connecting plate 25 is installed below the screening screen 16. A lifting mechanism is provided on the second connecting plate 25. A first connecting plate 23 is installed at one end of the lifting mechanism. The lifting mechanism includes a protective outer rod 22, a protective inner rod 24, and a second electric telescopic rod 44. A protective outer rod 23 is installed on the second connecting plate 25. The outer protective rod 22 has a second electric telescopic rod 44 installed inside it. The output end of the second electric telescopic rod 44 has a protective inner rod 24 installed. The top of the protective inner rod 24 is connected to the bottom of the first connecting plate 23. An elastic telescopic rod is installed on the first connecting plate 23, with a connecting block 21 installed at one end. The elastic telescopic rod includes an outer rod 19, an inner rod 20, and a spring 43. The outer rod 19 is installed on the first connecting plate 23, with a spring 43 installed inside it. The inner rod 20 is installed at one end of the spring 43, and one end of the inner rod 20 is connected to the bottom of the connecting block 21. A vibration motor 41 is installed on the first connecting plate 23. A discharge plate 26 is installed at an angle inside the housing 1, and the housing 1 has openings that cooperate with the discharge plate 26. The material trough and the back of the box body 1 are provided with a powder collection box 35. The powder collection box 35 is connected to the box body 1 through multiple air inlet pipes 15. The powder collection box 35 is equipped with a filter screen 38. The powder collection box 35 is equipped with an air duct 36. The air duct 36 is equipped with a fan 37. The bottom of the screening screen 16 is equipped with a second insertion rod 42. The connecting block 21 is provided with a second slot that cooperates with the second insertion rod 42. The box body 1 is equipped with a limiting mechanism. The limiting mechanism includes a first electric telescopic rod 13, a first electromagnet 14, a limiting frame 12 and a first iron block 27. The first electric telescopic rod 13 is installed on the top of the inner wall of the box body 1. The output end of the first electric telescopic rod 13 is provided with a first electromagnet 14. The limiting frame 12 is provided below the first electromagnet 14. A first iron block 27, compatible with the first electromagnet 14, is installed at the top of the screening screen 16. A first insert block 17 is installed at the top of the screening screen 16. A first slot, which cooperates with the first insert block 17, is provided on the limiting frame 12. A second electromagnet 18 is installed on the first insert block 17. A second iron block 45 is installed inside the slot. Raw materials are added to the box 1 through the feeding pipe 10. The vibration motor 41 is started, driving the screening screen 16 to vibrate and screen in conjunction with the elastic telescopic rod. The fan 37 is started, which can suck the powder generated during screening into the powder collection box 35 and collect it after filtering through the filter screen 38. By setting the air inlet pipe 15, the powder above the screening screen 16 and the powder passing through the screening screen 16 can be sucked up simultaneously, which can improve the collection effect. By setting the second electric telescopic rod 44,The second electric telescopic rod 44, when activated, causes the first connecting plate 23 to descend, thereby separating the elastic telescopic rod and vibrating motor 41 from the screening screen 16. The motor 4, when activated, causes the screening screen 16 to rotate, discharging any unqualified raw materials from the screen 16. By setting up a protective outer rod 22 and a protective inner rod 24, damage to the second electric telescopic rod 44 from falling powder is prevented. The first electric telescopic rod 13, when activated, causes the limiting frame 12 to descend, inserting the first insert 17 into the limiting frame 12, thus installing the limiting frame 12 onto the screening screen 16. The activation of the second electromagnet 18 causes it to attract the second iron block 45, thus fixing the installed limiting frame 12. By setting the first electromagnet 14, when it is deactivated, the first electric telescopic rod 13 separates from the limiting frame 12, allowing the limiting frame 12 to limit the material on the screening screen 16, preventing unqualified material from flowing down the screening screen 16 along with qualified material. It also allows the limiting frame 12 to move with the screening screen 16. The rotating block 39, rotatably connected to the rotating trough, allows the screening screen 16 to rotate on the housing 1. The ball bearings 40 reduce the friction of the rotating block 39.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 10As shown, the box body 1 is connected to the box door 2 via hinges. The box door 2 has an observation window 3 and a first handle 5. The hinges allow for easy rotation of the box door 2 to open the box body 1, enabling cleaning of the screening screen 16. The observation window 3 allows for easy observation of the screening process within the box body 1. The first handle 5 allows for easy pulling of the box door 2 to open the box body 1. A connecting frame 6 is installed on one side of the box body 1. A first support leg 11 is installed between the connecting frame 6 and the bottom of the box body 1. The connecting frame 6 slides... A collection box 7 is installed to facilitate the collection of raw materials discharged from the box body 1. A first support leg 11 supports the box body 1 and the connecting frame 6. A slider 9 is installed at the bottom of the collection box 7, and a groove is provided on the connecting frame 6 to cooperate with the slider 9. A second handle 8 is installed on the collection box 7. The slider 9 slidingly connects with the groove to facilitate the disassembly of a full collection box 7. The second handle 8 also facilitates pulling the collection box 7. A placement plate 29 is installed on one side of the connecting frame 6. An electric slide rail 30 is mounted on the placement plate 29, a push rod 31 is mounted on the electric slide rail 30, a first insert rod 32 is mounted on the push rod 31, a partition 28 is provided on the placement plate 29, a first slot that mates with the first insert rod 32 is provided on the partition 28, a second insert block 33 is provided at one end of the partition 28, a second slot that mates with the second insert block 33 is provided on the collection box 7, multiple second support legs 34 are provided at the bottom of the placement plate 29, and a third handle 46 is provided at one end of the partition 28. The partition 28 is configured to... The internal structure of the collection box 7 can be divided into two parts, allowing qualified and unqualified products to be placed separately. By setting an electric slide rail 30, the electric slide rail 30 can drive the push rod 31 to move, which can push the partition 28 into the collection box 7 for installation. By setting a first insert rod 32 to engage with the first slot, the partition 28 can be guided and limited. By setting a second insert block 33 to engage with the second slot, the installed partition 28 can be supported. By setting a third handle 46, the partition 28 can be easily pulled and removed.

[0031] In this embodiment, as Figures 1-10 As shown, the working process of the graphite electrode raw material screening equipment provided in this embodiment is as follows:

[0032] Step 1: The first electric telescopic rod 13 is activated, driving the limiting frame 12 to descend. The first insert block 17 is inserted into the first slot, connecting the limiting frame 12 to the screening screen 16. The second electromagnet 18 is activated, attracting the second iron block 45 to fix the limiting frame 12. The first electromagnet 14 is closed, separating the first electromagnet 14 from the first iron block 27. The first electric telescopic rod 13 is activated, driving the first electromagnet 14 to rise away from the limiting frame 12. The vibration motor 41 is activated, cooperating with the elastic telescopic rod to make the screening screen 16 vibrate and screen. During screening, the fan 37 is activated, sucking the powder in the box 1 into the powder collection box 35 through the air inlet pipe 15. After being filtered by the filter screen 38, it is collected. The qualified raw materials fall onto the discharge plate 26 and are discharged from the box 1 through the discharge plate 26 and collected in the collection box 7.

[0033] Step 2: After screening, the electric slide rail 30 is activated, which moves the push rod 31 to push the partition 28 into the collection box 7 for installation. The first electric telescopic rod 13 is activated, which drives the first electromagnet 14 to descend. The first electromagnet 14 is activated to attract the limiting frame 12. The second electromagnet 18 is closed and separated from the limiting frame 12. The first electric telescopic rod 13 is activated, which drives the limiting frame 12 to rise and separate the limiting frame 12 from the screening screen 16. The second electric telescopic rod 44 is activated, which drives the first connecting plate 23 to descend, causing the vibrating motor 41 and the elastic telescopic rod to separate from the screening screen 16. The motor 4 is activated, which drives the screening screen 16 to rotate. The unqualified raw materials on the screening screen 16 fall onto the discharge plate 26 and are discharged into the collection box 7 for collection.

[0034] In summary, in this embodiment, according to the graphite electrode raw material screening equipment, the raw material is added into the box 1 through the feeding pipe 10. The vibration motor 41 starts and drives the screening screen 16 to vibrate and screen in conjunction with the elastic telescopic rod. The fan 37 starts and can suck the powder generated during screening into the powder collection box 35, which is then filtered and collected by the filter screen 38. By setting the air inlet pipe 15, the powder above and through the screening screen 16 can be sucked up simultaneously, which can improve the collection effect. By setting the second electric telescopic rod 44, the second electric telescopic rod 44 starts and drives the first connecting plate 23 to descend, thereby separating the elastic telescopic rod and the vibration motor 41 from the screening screen 16. The motor 4 starts and drives the screening screen 16 to vibrate and screen the screen 16. Rotation 6 can discharge unqualified raw materials from the screening screen 16. By setting the outer protective rod 22 and the inner protective rod 24, it can prevent powder from falling onto the second electric telescopic rod 44 and causing damage to it. By setting the first electric telescopic rod 13, the first electric telescopic rod 13 is activated, driving the limiting frame 12 to descend and inserting the first insert 17 into the limiting frame 12, thus installing the limiting frame 12 on the screening screen 16. The second electromagnet 18 is activated, causing the second electromagnet 18 to attract the second iron block 45, thus fixing the installed limiting frame 12. By setting the first electromagnet 14, the first electromagnet 14 is deactivated, and the first electric telescopic rod 13 is separated from the limiting frame 12, allowing the limiting frame 12 to control the raw materials on the screening screen 16. The system includes a limit mechanism to prevent substandard materials from being discharged from the screening screen 16 along with qualified materials, and to allow the limit frame 12 to move with the screening screen 16. A rotating block 39 connected to the rotating trough allows the screening screen 16 to rotate on the housing 1. Ball bearings 40 reduce the friction of the rotating block 39. A hinge facilitates opening the housing 1 by rotating the housing door 2, allowing for cleaning of the screening screen 16. An observation window 3 allows for easy observation of the screening process within the housing 1. A first handle 5 allows for easy pulling of the housing door 2 to open the housing 1. A collection box 7 facilitates the collection of materials discharged from the housing 1. A first support leg 11 supports the housing 1 and the connecting... The frame 6 is designed with a slider 9 that slides into the groove to facilitate the removal of a full collection box 7. A second handle 8 facilitates the pulling of the collection box 7. A partition 28 divides the interior of the collection box 7 into two parts, allowing for the separate placement of qualified and unqualified products. An electric slide rail 30, when activated, moves a push rod 31 to push the partition 28 into the collection box 7 for installation. A first insert rod 32 engages with a first slot to guide and limit the partition 28. A second insert block 33 engages with a second slot to support the installed partition 28. A third handle 46 facilitates the pulling and removal of the partition 28.

[0035] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A graphite electrode raw material screening device, characterized in that, Includes a housing (1) and a feeding pipe (10) installed on the top of the housing (1). A housing door (2) is rotatably installed on the housing (1). A motor (4) is installed on one side of the housing (1). A screening screen (16) is installed at the output end of the motor (4). A second connecting plate (25) is installed below the screening screen (16). A lifting mechanism is provided on the second connecting plate (25). A first connecting plate (23) is installed at one end of the lifting mechanism. An elastic telescopic rod is installed on the first connecting plate (23). A connecting block (21) is installed at one end of the retractable rod, and a vibration motor (41) is installed on the first connecting plate (23). A discharge plate (26) is installed at an incline inside the box (1). A discharge trough that cooperates with the discharge plate (26) is opened on the box (1). A powder collection box (35) is provided on the back of the box (1). The powder collection box (35) is connected to the box (1) through multiple air inlet pipes (15). A filter screen (38) is installed inside the powder collection box (35). An air duct (3) is installed on the powder collection box (35). 6) A fan (37) is installed on the air duct (36), a second insert rod (42) is installed at the bottom of the screening screen (16), a second slot that cooperates with the second insert rod (42) is opened on the connecting block (21), a limiting mechanism is installed inside the box (1), the limiting mechanism includes a first electric telescopic rod (13), a first electromagnet (14), a limiting frame (12) and a first iron block (27), the first electric telescopic rod (13) is installed on the top of the inner wall of the box (1), the first electric telescopic rod (13) The output end of the screen is provided with a first electromagnet (14), and a limit frame (12) is provided below the first electromagnet (14). A first iron block (27) adapted to the first electromagnet (14) is installed on the top of the limit frame (12). A first insert block (17) is installed on the top of the screen (16). A first slot that cooperates with the first insert block (17) is opened on the limit frame (12). A second electromagnet (18) is installed on the first insert block (17). A second iron block (45) is installed inside the first slot.

2. The graphite electrode raw material screening equipment according to claim 1, characterized in that, The lifting mechanism includes a protective outer rod (22), a protective inner rod (24), and a second electric telescopic rod (44). The protective outer rod (22) is installed on the second connecting plate (25). The second electric telescopic rod (44) is installed inside the protective outer rod (22). The protective inner rod (24) is installed at the output end of the second electric telescopic rod (44). The top of the protective inner rod (24) is connected to the bottom of the first connecting plate (23).

3. The graphite electrode raw material screening equipment according to claim 1, characterized in that, The elastic telescopic rod includes an outer rod (19), an inner rod (20), and a spring (43). The outer rod (19) is installed on the first connecting plate (23). The spring (43) is installed inside the outer rod (19). The inner rod (20) is installed at one end of the spring (43). One end of the inner rod (20) is connected to the bottom of the connecting block (21).

4. The graphite electrode raw material screening equipment according to claim 1, characterized in that, The box body (1) is connected to the box body door (2) by a hinge. The box body door (2) is provided with an observation window (3) and a first handle (5) is installed on the box body door (2).

5. The graphite electrode raw material screening equipment according to claim 1, characterized in that, A connecting frame (6) is installed on one side of the box (1), and a first support leg (11) is installed on the bottom of the connecting frame (6) and the box (1). A collection box (7) is slidably installed on the connecting frame (6).

6. The graphite electrode raw material screening equipment according to claim 5, characterized in that, The bottom of the collection box (7) is equipped with a slider (9), the connecting frame (6) is provided with a groove that cooperates with the slider (9), and the collection box (7) is equipped with a second handle (8).

7. The graphite electrode raw material screening equipment according to claim 6, characterized in that, A placement plate (29) is installed on one side of the connecting frame (6). An electric slide rail (30) is installed on the placement plate (29). A push rod (31) is installed on the electric slide rail (30). A first insert rod (32) is installed on the push rod (31). A partition (28) is provided on the placement plate (29). A first slot that cooperates with the first insert rod (32) is opened on the partition (28). A second insert block (33) is installed at one end of the partition (28). A second slot that cooperates with the second insert block (33) is opened on the collection box (7). A plurality of second support legs (34) are installed at the bottom of the placement plate (29). A third handle (46) is installed at one end of the partition (28).

8. The graphite electrode raw material screening equipment according to claim 1, characterized in that, One end of the screening screen (16) is equipped with a rotating block (39), and the box (1) is provided with a rotating groove that cooperates with the rotating block (39). The rotating block (39) is provided with multiple rotating cavities, and the rotating cavities are rotatably installed with ball bearings (40).

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