Novel screening mechanism for graphite electrode roasting production

Abstract

The invention relates to the technical field of graphite electrode production and material screening, in particular to a novel material screening mechanism for graphite electrode roasting production, which comprises a bottom support frame, the upper part of the bottom support frame is slidably connected with a first support frame and a second support frame respectively, and a material receiving hopper is fixedly mounted on the second support frame; a triangular supporting frame is arranged on the first supporting frame, a vibrating screen power assembly is arranged between the first supporting frame and the second supporting frame, frequency modulation devices capable of adjusting the vibrating screen frequency of the vibrating screen power assembly are arranged on the two sides of the bottom supporting frame, and a longitudinal vibrator located between the first supporting frame and the second supporting frame is arranged on the bottom supporting frame. One end of the triangular supporting frame is rotationally connected with a screen, and the other end of the triangular supporting frame is provided with an elastic vibrator capable of elastic vibrating screen materials on the screen. According to the novel material screening mechanism for graphite electrode roasting production, automatic multiple-time multi-form vibration screening can be effectively conducted on graphite electrode raw material particles, the raw material difference between tanks is reduced, and the stability of the subsequent process in production is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screening materials for the production of graphite electrodes, and specifically refers to a novel screening mechanism for the roasting production of graphite electrodes. Background Art

[0002] During the roasting production process of graphite electrodes, the screening mechanism is a key equipment to ensure the uniformity of raw material particles and production efficiency. In the prior art, the common structure of the screening mechanism often uses a vibrating screen for particle classification and a screw conveyor to achieve continuous material transportation; In the prior art, the motor drives the pulley to drive the filter plate to vibrate, and multiple layers of sieves are used to classify and screen raw materials with different particle sizes; However, when using the above-mentioned prior art structure during the screening process, due to the phenomenon that particles are prone to accumulate and agglomerate, they are blocked by the first screening plate and then sent to the second screening plate for re-screening. During the transportation process, the falling of the particles causes the agglomerated particles to scatter, resulting in uneven particle sizes in the second screening plate, and ultimately leading to large differences in raw materials between tanks and affecting the stability of subsequent processes. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a novel screening mechanism for the roasting production of graphite electrodes, which can effectively perform automatic multi-form vibrating sieves on the raw material particles of graphite electrodes, reduce the differences in raw materials between tanks, and improve the stability of subsequent processes in production.

[0004] To solve the above technical problems, the technical solution provided by the present invention is: a novel screening mechanism for the roasting production of graphite electrodes, which includes a bottom support frame. A first support frame and a second support frame are respectively slidably connected to the upper part of the bottom support frame. A receiving hopper is fixedly installed on the second support frame. A triangular support frame is provided on the first support frame. A vibrating screen power assembly is arranged between the first support frame and the second support frame. Frequency modulation devices for adjusting the vibrating screen frequency of the vibrating screen power assembly are arranged on both sides of the bottom support frame. A longitudinal vibrator located between the first support frame and the second support frame is provided on the bottom support frame. One end of the triangular support frame is rotatably connected to a sieve mesh, and a shock absorber for bouncing the screened material on the sieve mesh is provided at the other end.

[0005] As an improvement, the bottom support frame includes a bottom support frame body. Two symmetrically distributed upper through grooves are provided at the top of the bottom support frame body. Two symmetrically distributed side through grooves communicating with the upper through grooves are provided on both sides of the bottom support frame body. The first support frame includes a sliding seat that can move left and right in the upper through groove and the side through groove. The second support frame includes a driving sliding seat that can move left and right in the upper through groove and the side through groove. Rotating shafts are provided at both ends of the sliding seat. A double-shaft driving motor is arranged in the driving sliding seat. The output shafts of the double-shaft driving motor expose the driving sliding seat. The driving sliding seat realizes the movement of the sliding seat through the vibrating screen power assembly, thereby providing power for the sieve mesh.

[0006] As an improvement, the vibrating screen power assembly includes swing arms fixedly connected to the two output shafts of the dual-axis drive motor. A connecting rod is rotatably connected to the end of the swing arm away from the dual-axis drive motor. The end of the connecting rod away from the swing arm is rotatably connected to a rotating shaft. First springs are provided on both sides of the sliding seat, and second springs are provided on both sides of the driving sliding seat.

[0007] As an improvement, the frequency modulation device includes top plates respectively located in the two side through grooves. The first springs are located between the top plates and the sliding seat, and the second springs are located between the top plates and the driving sliding seat. Slide shafts are provided at both ends of the two top plates. Pneumatic telescopic rods located below the two side through grooves are respectively provided on both sides of the bottom support frame. The telescopic ends of the pneumatic telescopic rods are fixedly installed with L-shaped limit plates. Y-shaped sliding rods that are in sliding contact with the bottoms of the slide shafts are provided on the L-shaped limit plates. Slide sleeves for the L-shaped limit plates to slide up and down are provided on both sides of the frame body of the bottom support frame.

[0008] As an improvement, a first support rod is provided on the sliding seat, and a second support rod is provided on the driving sliding seat. The longitudinal vibrator includes a rectangular frame body located between the first support rod, the second support rod, the frame body of the bottom support frame, and the material receiving hopper. The rectangular frame body is slidably installed on the frame body of the bottom support frame. A plurality of uniformly distributed slide rods are provided at both ends of the rectangular frame body. Limit plates are provided at one ends of the plurality of slide rods away from the rectangular frame body. Third springs are provided between the limit plates and the first support rod and the second support rod respectively.

[0009] As an improvement, a limit sliding sleeve with a limit through hole inside is provided at the top of the rectangular frame body. A limit sliding rod is slidably connected inside the limit sliding sleeve. A moving plate that can move up and down inside the rectangular frame body is fixedly connected to the two limit sliding rods. A connecting shaft with both ends exposed from the moving plate is rotatably connected inside the moving plate. Swing hammers are fixedly connected to the two ends of the connecting shaft.

[0010] As an improvement, a fourth spring is provided between the bottoms of the two limit sliding rods and the bottom of the rectangular frame body.

[0011] As an improvement, the triangular support frame includes a double-layer triangular frame body fixedly connected to the first support rod. The double-layer triangular frame body is a right triangle. A limit rotating shaft is provided at the right angle of the double-layer triangular frame body. The screen includes a screen body. A limit sliding frame that can slide and rotate on the limit rotating shaft is provided at the bottom of the screen body.

[0012] As an improvement, two symmetrically distributed wedge-shaped chute bodies are fixedly installed at the acute angle end of the double-layer triangular frame body far from the first support rod. An L-shaped rotating shaft is provided on the wedge-shaped chute body, and an extension plate body is provided at the bottom of the wedge-shaped chute body. The shock absorber includes a first wedge-shaped slider that can move up and down in the wedge-shaped chute body. A fifth spring is provided between the first wedge-shaped slider and the extension plate body. One side of the first wedge-shaped slider exposed from the wedge-shaped chute body is fixedly installed with a capped wedge-shaped chute body. A second wedge-shaped slider is slidably connected in the capped wedge-shaped chute body. A sixth spring is provided between the second wedge-shaped slider and the capped wedge-shaped chute body. A plate body is rotatably connected to the L-shaped rotating shaft. A first limit protrusion is provided on the second wedge-shaped slider, and a second limit protrusion is provided on the side of the plate body close to the second wedge-shaped slider. An inclined surface is provided at the top of the plate body, and an inclined surface protrusion matching the inclined surface is provided at the top of the capped wedge-shaped chute body. A seventh spring is provided between the two plate bodies, and a support column is provided between the second wedge-shaped slider and the extension plate body.

[0013] After adopting the above structure, the present invention has the following advantages: It can effectively perform automatic multiple forms of vibrating sieving on the graphite electrode raw material particles, reduce the raw material difference between tanks, and improve the stability of subsequent processes in production; 1. By providing a frequency modulation device, the vibration frequencies of the sieve mesh and the receiving hopper can be adjusted. Compared with the existing technology using a variable frequency motor, this method has higher reliability; 2. By providing a longitudinal vibrator, the bottom of the receiving hopper is continuously knocked by the vibration between the first support rod and the second support rod, so that the receiving hopper discharges materials more smoothly without additional power. Compared with the existing technology, it has better environmental protection and energy saving, and reduces equipment costs; 3. By providing a shock absorber, on the one hand, it can use the gap when the sieve mesh body is tilted for filling. Compared with the existing technology, it can avoid the problem of sieve holes being blocked due to the sieve mesh body always remaining horizontal. On the other hand, through a small-volume structure, the elastic force accumulated by the compression deformation of the fifth spring and the sixth spring is quickly released, so that the agglomerated particles are broken up and the vibrating sieving efficiency is improved. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of a new type of sieve material mechanism for graphite electrode roasting production of the present invention Figure 1 。

[0015] Figure 2 is the structural schematic diagram of a new type of sieve material mechanism for graphite electrode roasting production of the present invention Figure 2 。

[0016] Figure 3 is the structural schematic diagram of the vibrating sieve power assembly of a new type of sieve material mechanism for graphite electrode roasting production of the present invention.

[0017] Figure 4It is a schematic structural diagram of a frequency modulation device of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0018] Figure 5 It is a schematic structural diagram of a longitudinal vibrator of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0019] Figure 6 It is a partial schematic structural diagram of a longitudinal vibrator of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0020] Figure 7 It is a partial structural decomposition schematic diagram of a longitudinal vibrator of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0021] Figure 8 It is a schematic structural diagram of a triangular support frame of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0022] Figure 9 It is a schematic structural diagram of a shock absorber of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0023] Figure 10 It is a partial structural decomposition schematic diagram of a shock absorber of a new type of screening mechanism for graphite electrode roasting production of the present invention.

[0024] As shown in the figure: 1. Bottom support frame; 101. Frame body of the bottom support frame; 102. Side through groove; 103. Upper through groove; 104. Sliding sleeve; 2. First support frame; 201. Sliding seat; 202. First support rod; 203. Rotating shaft; 204. First spring; 3. Second support frame; 301. Driving sliding seat; 302. Second support rod; 303. Biaxial driving motor; 304. Second spring; 4. Vibration sieve power assembly; 401. Swing arm; 402. Connecting rod; 5. Frequency modulation device; 501. Pneumatic telescopic rod; 502. L-shaped limiting plate; 503. Y-shaped sliding rod; 504. Top plate; 505. Sliding shaft; 6. Longitudinal vibrator; 601. Rectangular frame body; 602. Limiting sliding sleeve; 603. Limiting sliding rod; 604. Fourth spring; 605. Moving plate; 606. Sliding rod; 607. Limiting plate; 608. Third spring; 609. Pendulum; 610. Connecting shaft; 611. Knocking hammer; 7. Sieve mesh; 701. Sieve mesh body; 702. Limiting sliding frame; 8. Shock absorber; 801. First wedge-shaped slider; 802. Capped wedge-shaped chute body; 803. Fifth spring; 804. Sixth spring; 805. Inclined surface protrusion; 806. Plate body; 807. Seventh spring; 808. Second limiting protrusion; 809. Second wedge-shaped slider; 810. First limiting protrusion; 811. Support column; 812. Inclined surface; 9. Material receiving hopper; 10. Triangular support frame; 1001. Double-layer triangular frame body; 1002. Limiting rotating shaft; 1003. Wedge-shaped chute body; 1004. L-shaped rotating shaft; 1005. Extended plate body. Detailed implementation mode

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Combined with the attached Figure 1 、attached Figure 2 、attached Figure 3 and attached Figure 4 : A new type of screening mechanism for graphite electrode roasting production, which includes a bottom support frame 1. A first support frame 2 and a second support frame 3 are respectively slidably connected to the upper part of the bottom support frame 1. A material receiving hopper 9 is fixedly installed on the second support frame 3. A triangular support frame 10 is provided on the first support frame 2. A vibration sieve power assembly 4 is provided between the first support frame 2 and the second support frame 3; The bottom support frame 1 includes a bottom support frame body 101. Two symmetrically distributed upper through grooves 103 are provided at the top of the bottom support frame body 101. Two symmetrically distributed side through grooves 102 that communicate with the upper through grooves 103 are provided on both sides of the bottom support frame body 101. The first support frame 2 includes a sliding seat 201 that can move left and right in the upper through grooves 103 and the side through grooves 102. The second support frame 3 includes a driving sliding seat 301 that can move left and right in the upper through grooves 103 and the side through grooves 102. Rotating shafts 203 are provided at both ends of the sliding seat 201. A double-shaft driving motor 303 is provided inside the driving sliding seat 301. The output shafts of the double-shaft driving motor 303 expose the driving sliding seat 301. The driving sliding seat 301 drives the movement of the sliding seat 201 through a vibrating screen power assembly 4, thereby providing power to the screen 7. The vibrating screen power assembly 4 includes swing arms 401 fixedly connected to the two output shafts of the double-shaft driving motor 303. A connecting rod 402 is rotatably connected to the end of the swing arm 401 away from the double-shaft driving motor 303. The end of the connecting rod 402 away from the swing arm 401 is rotatably connected to the rotating shaft 203. First springs 204 are provided on both sides of the sliding seat 201. Second springs 304 are provided on both sides of the driving sliding seat 301.

[0027] With the above structure, when the double-shaft driving motor 303 is started, the output shafts of the double-shaft driving motor 303 drive the swing arms 401 at both ends to rotate, so that the connecting rod 402 swings around the rotating shaft 203. During the swinging process, the horizontal distance between the sliding seat 201 and the driving sliding seat 301 continuously changes. During this process, the first springs 204 and the second springs 304 provide vibration due to compression, causing the upper feeding hopper 9 and the screen 7 above to vibrate, thereby achieving the effect of vibrating the screen.

[0028] Combined with attached Figure 2 、attached Figure 3 and attached Figure 4 : Frequency modulation devices 5 for adjusting the vibrating screen frequency of the vibrating screen power assembly 4 are provided on both sides of the bottom support frame 1. The frequency modulation devices 5 include top plates 504 respectively located in the two side through grooves 102. The first springs 204 are located between the top plates 504 and the sliding seat 201. The second springs 304 are located between the top plates 504 and the driving sliding seat 301. Sliding shafts 505 are provided at both ends of the two top plates 504. Pneumatic telescopic rods 501 located below the two side through grooves 102 are respectively provided on both sides of the bottom support frame 1. An L-shaped limiting plate 502 is fixedly installed at the telescopic end of the pneumatic telescopic rod 501. A Y-shaped sliding rod 503 that slidably contacts the bottom of the sliding shaft 505 is provided on the L-shaped limiting plate 502. Sliding sleeves 104 for the L-shaped limiting plate 502 to slide up and down are provided on both sides of the bottom support frame body 101.

[0029] With this structure, the pneumatic telescopic rod 501 is activated to adjust the position of the L-shaped limit plate 502. When the telescopic end of the pneumatic telescopic rod 501 is at its shortest, refer to the attached Figure 4 , the distance between two adjacent same-side sliding shafts 505 is the largest. At this time, the vibration frequencies provided by the first spring 204 and the second spring 304 due to compression are the lowest. When the telescopic end of the pneumatic telescopic rod 501 is at its longest, the distance between two adjacent same-side sliding shafts 505 is the smallest. At this time, the vibration frequencies provided by the first spring 204 and the second spring 304 due to compression are the highest.

[0030] Combined with the attached Figure 2 、the attached Figure 4 、the attached Figure 5 、the attached Figure 6 and the attached Figure 7 : A longitudinal vibrator 6 is provided on the bottom support frame 1 between the first support frame 2 and the second support frame 3. A first support rod 202 is provided on the sliding seat 201, and a second support rod 302 is provided on the driving sliding seat 301. The longitudinal vibrator 6 includes a rectangular frame body 601 between the first support rod 202, the second support rod 302, the frame body 101 of the bottom support frame, and the material receiving hopper 9. The rectangular frame body 601 is slidably mounted on the frame body 101 of the bottom support frame. A plurality of uniformly distributed sliding rods 606 are provided at both ends of the rectangular frame body 601. A limit plate 607 is provided at one end of each of the plurality of sliding rods 606 away from the rectangular frame body 601. A third spring 608 is provided between the limit plate 607 and the first support rod 202 and the second support rod 302 respectively; A limit sliding sleeve 602 with a limit through hole inside is provided at the top of the rectangular frame body 601. A limit sliding rod 603 is slidably connected inside the limit sliding sleeve 602. A moving plate 605 that can move up and down inside the rectangular frame body 601 is fixedly connected to the two limit sliding rods 603. A connecting shaft 610 with both ends exposed from the moving plate 605 is rotatably connected inside the moving plate 605. Pendulums 609 are fixedly connected to both ends of the connecting shaft 610; A fourth spring 604 is provided between the bottoms of the two limit sliding rods 603 and the bottom of the rectangular frame body 601.

[0031] With the above structure, when the first support rod 202 and the second support rod 302 vibrate along with the sliding seat 201 and the driving sliding seat 301, the first support rod 202 and the second support rod 302 generate displacements, causing the third spring 608 to be compressed and stretched. As a result, the rectangular frame 601 moves left and right on the bottom support frame body 101. The rectangular frame 601 is connected to the bottom support frame body 101 through a limit slide rail. During the left and right movement of the rectangular frame 601, the pendulum 609 swings, thereby driving the two limit slide rods 603 to move up and down through the moving plate 605. The fourth spring 604 is used to increase the frequency of the up and down movement of the limit slide rods 603. The two limit slide rods 603 are provided with knocking hammers 611, causing the knocking hammers 611 to continuously knock the material receiving hopper 9. See the appendix Figure 2 , the material receiving surface of the material receiving hopper 9 is an inclined surface, enabling the screened materials in the material receiving hopper 9 to slide out quickly.

[0032] Combined with appendix Figure 1 , appendix Figure 8 , appendix Figure 9 and appendix Figure 10 : One end of the triangular support frame 10 is rotatably connected to a screen mesh 7, and the other end is provided with a shaker 8 that can shock the screened materials on the screen mesh 7. The triangular support frame 10 includes a double-layer triangular frame body 1001 fixedly connected to the first support rod 202. The double-layer triangular frame body 1001 is a right-angled triangle, and a limit rotating shaft 1002 is provided at the right angle of the double-layer triangular frame body 1001. The screen mesh 7 includes a screen mesh body 701, and a limit sliding frame 702 that can slide and rotate on the limit rotating shaft 1002 is provided at the bottom of the screen mesh body 701; At the acute-angle end of the double-layer triangular frame body 1001 away from the first support rod 202, two symmetrically distributed wedge-shaped chute bodies 1003 are fixedly installed. An L-shaped rotating shaft 1004 is arranged on the wedge-shaped chute body 1003, and an extension plate body 1005 is arranged at the bottom of the wedge-shaped chute body 1003. The shock absorber 8 includes a first wedge-shaped slider 801 that can move up and down in the wedge-shaped chute body 1003. A fifth spring 803 is arranged between the first wedge-shaped slider 801 and the extension plate body 1005. On one side of the first wedge-shaped slider 801 exposed from the wedge-shaped chute body 1003, a capped wedge-shaped chute body 802 is fixedly installed. A second wedge-shaped slider 809 is slidably connected in the capped wedge-shaped chute body 802. A sixth spring 804 is arranged between the second wedge-shaped slider 809 and the capped wedge-shaped chute body 802. A plate body 806 is rotatably connected to the L-shaped rotating shaft 1004. A first limit protrusion 810 is arranged on the second wedge-shaped slider 809. A second limit protrusion 808 is arranged on the side of the plate body 806 close to the second wedge-shaped slider 809. An inclined surface 812 is arranged at the top of the plate body 806. An inclined surface protrusion 805 matched with the inclined surface 812 is arranged at the top of the capped wedge-shaped chute body 802. A seventh spring 807 is arranged between the two plate bodies 806. A support column 811 is arranged between the second wedge-shaped slider 809 and the extension plate body 1005.

[0033] With the above structure, after the granular sieve material of the graphite electrode is placed on the sieve mesh 7, screening is carried out during the vibration of the sieve mesh body 701. As the number of unsieved particles on the sieve mesh body 701 increases, the pressure of the unsieved particles on the sieve mesh body 701 gradually increases, so that one end of the sieve mesh body 701 close to the shock absorber 8 gradually presses down, and the other end slides and rotates through the cooperation of the limit slide frame 702 and the limit rotating shaft 1002. At this time, one end of the sieve mesh body 701 close to the shock absorber 8 is lower, so that the unsieved particles slide to one end of the sieve mesh body 701 close to the shock absorber 8. At this time, the sieve mesh body 701 is filled, and the sieve mesh body 701 can be changed from an inclined state to a state where one end vibrates up and down. The sieve mesh body 701 vibrating at one end will bounce up the granular sieve material located at the lower end of the sieve mesh body 701, thus solving the problem of sieve hole blockage. The second limiting protrusion 808 is in contact with the first limiting protrusion 810 and has a certain frictional force, which is the prior art and will not be elaborated here. After the un-screened particles on the screen body 701 gradually increase, the screen body 701 continues to press down, causing the capping wedge-shaped chute body 802 to slide downward, thereby continuously compressing the fifth spring 803 and the sixth spring 804, making the fifth spring 803 and the sixth spring 804 continuously store energy. When the inclined surface protrusion 805 contacts the inclined surface 812, the continuous increase in the downward pressure of the inclined surface protrusion 805 will cause the plate body 806 to overcome the pre-tension of the seventh spring 807 and the frictional force between the second limiting protrusion 808 and the first limiting protrusion 810. Thus, the plate body 806 has a tendency to rotate. When the plate body 806 starts to rotate to compress the seventh spring 807 and cause relative movement between the second limiting protrusion 808 and the first limiting protrusion 810, the plate body 806 gives an upward force to the capping wedge-shaped chute body 802 through the inclined surface 812. At this time, the inclined surface protrusion 805 with a gradually increasing downward pressure slows down its descent. When the plate body 806 rotates until the inclined surface 812 disengages from the inclined surface protrusion 805, the second limiting protrusion 808 disengages from the first limiting protrusion 810. At this time, the capping wedge-shaped chute body 802 will quickly move downward under the action of the downward pressure and compress the fifth spring 803 and the sixth spring 804 to the lowest point. Due to the sudden increase in the pressure on the fifth spring 803 and the sixth spring 804 causing unstable force, after the fifth spring 803 and the sixth spring 804 are compressed, they will produce an effect of reciprocating up and down rebounds, and through the capping wedge-shaped chute body 802, the particles on the screen body 701 are bounced up and re-scattered on the screen body 701, having an effect of breaking up agglomerated particles, thereby improving the screening efficiency.

[0034] When the present invention is specifically implemented, the particulate raw material to be screened is placed on the screen body 701, and the double-shaft drive motor 303 is started. Through the vibrating screen power assembly 4, the triangular support frame 10 and the receiving hopper 9 generate vibrations, thereby starting the screening operation. During the process, the pneumatic telescopic rod 501 is started to adjust the position of the L-shaped limiting plate 502, and further adjust the vibration frequency of the triangular support frame 10 and the receiving hopper 9. During the left and right movement of the rectangular frame body 601, the pendulum 609 swings, thereby driving the two limiting slide rods 603 to move up and down through the moving plate 605. The fourth spring 604 is used to increase the frequency of the up and down movement of the limiting slide rods 603. The two limiting slide rods 603 are provided with knocking hammers 611, which continuously knock the receiving hopper 9, thereby enabling the receiving hopper 9 to discharge materials more smoothly. When there are more and more unfiltered particles on the screen body 701, the screen body 701 tilts. At this time, filling the screen body 701 can change the tilted state of the screen body 701 into a state where one end vibrates up and down. The screen body 701 vibrating at one end will bounce up the granular screening materials located at the lower end of the screen body 701, thus solving the problem of screen hole blockage; After the unfiltered particles on the screen body 701 reach a certain amount, the shaker 8 vibrates the unfiltered particles on the screen body 701, which can break up the agglomerated particles, thereby improving the screening efficiency.

[0035] The above describes the present invention and its implementation manners, and this description is not restrictive. The actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A novel screening mechanism for the roasting production of graphite electrodes, which comprises a bottom support frame (1). The upper part of the bottom support frame (1) is respectively slidably connected with a first support frame (2) and a second support frame (3). A receiving hopper (9) is fixedly installed on the second support frame (3). A triangular support frame (10) is provided on the first support frame (2). A vibrating screen power assembly (4) is arranged between the first support frame (2) and the second support frame (3), and it is characterized in that: On both sides of the bottom support frame (1), there is a frequency modulation device (5) that can adjust the vibration sieve frequency of the vibration sieve power assembly (4). On the bottom support frame (1), there is a longitudinal vibrator (6) located between the first support frame (2) and the second support frame (3). One end of the triangular support frame (10) is rotatably connected to a sieve mesh (7), and the other end is provided with a shock absorber (8) that can shock the sieve material on the sieve mesh (7).

2. The novel screening mechanism for the roasting production of graphite electrodes according to claim 1, characterized in that: The bottom support frame (1) includes a bottom support frame body (101). At the top of the bottom support frame body (101), there are two symmetrically distributed upper through grooves (103). On both sides of the bottom support frame body (101), there are two symmetrically distributed side through grooves (102) that communicate with the upper through grooves (103). The first support frame (2) includes a sliding seat (201) that can move left and right in the upper through groove (103) and the side through groove (102). The second support frame (3) includes a driving sliding seat (301) that can move left and right in the upper through groove (103) and the side through groove (102). At both ends of the sliding seat (201), there are rotating shafts (203). Inside the driving sliding seat (301), there is a double-shaft driving motor (303). The output shafts of the double-shaft driving motor (303) expose out of the driving sliding seat (301). The driving sliding seat (301) drives the movement of the sliding seat (201) through the vibration sieve power assembly (4), thereby providing power to the sieve mesh (7).

3. The novel screening mechanism for the roasting production of graphite electrodes according to claim 2, characterized in that: The vibration sieve power assembly (4) includes swing arms (401) fixedly connected to the two output shafts of the double-shaft driving motor (303). The end of the swing arm (401) far from the double-shaft driving motor (303) is rotatably connected to a connecting rod (402). The end of the connecting rod (402) far from the swing arm (401) is rotatably connected to the rotating shaft (203). On both sides of the sliding seat (201), there are first springs (204). On both sides of the driving sliding seat (301), there are second springs (304).

4. The novel screening mechanism for the roasting production of graphite electrodes according to claim 3, characterized in that: The frequency modulation device (5) includes top plates (504) respectively located in the two side through grooves (102). The first spring (204) is located between the top plate (504) and the sliding seat (201). The second spring (304) is located between the top plate (504) and the driving sliding seat (301). At both ends of the two top plates (504), there are sliding shafts (505). On both sides of the bottom support frame (1), there are pneumatic telescopic rods (501) respectively located below the two side through grooves (102). The telescopic end of the pneumatic telescopic rod (501) is fixedly installed with an L-shaped limiting plate (502). On the L-shaped limiting plate (502), there is a Y-shaped sliding rod (503) that slidably contacts the bottom of the sliding shaft (505). On both sides of the bottom support frame body (101), there are sliding sleeves (104) for the L-shaped limiting plate (502) to slide up and down.

5. The novel screening mechanism for the roasting production of graphite electrodes according to claim 2, characterized in that: A first support rod (202) is provided on the sliding seat (201), and a second support rod (302) is provided on the driving sliding seat (301). The longitudinal vibrator (6) includes a rectangular frame body (601) located between the first support rod (202), the second support rod (302), the bottom support frame body (101), and the material receiving hopper (9). The rectangular frame body (601) is slidably mounted on the bottom support frame body (101). A plurality of uniformly distributed sliding rods (606) are provided at both ends of the rectangular frame body (601). A limiting plate (607) is provided at one end of each of the plurality of sliding rods (606) away from the rectangular frame body (601). A third spring (608) is provided between the limiting plate (607) and the first support rod (202) and the second support rod (302).

6. The novel screening mechanism for the roasting production of graphite electrodes according to claim 5, characterized in that: A limiting sliding sleeve (602) with a limiting through hole inside is provided on the top of the rectangular frame body (601). A limiting sliding rod (603) is slidably connected inside the limiting sliding sleeve (602). A moving plate (605) that can move up and down inside the rectangular frame body (601) is fixedly connected to the limiting sliding sleeve (602). A connecting shaft (610) with both ends exposed from the moving plate (605) is rotatably connected inside the moving plate (605). Two pendulums (609) are fixedly connected to the two end portions of the connecting shaft (610).

7. The novel screening mechanism for the roasting production of graphite electrodes according to claim 6, characterized in that: A fourth spring (604) is provided between the bottoms of the two limiting sliding rods (603) and the bottom of the rectangular frame body (601).

8. The novel screening mechanism for the roasting production of graphite electrodes according to claim 2, characterized in that: The triangular support frame (10) includes a double-layer triangular frame body (1001) fixedly connected to the first support rod (202). The double-layer triangular frame body (1001) is a right triangle. A limiting rotating shaft (1002) is provided at the right angle of the double-layer triangular frame body (1001). The sieve (7) includes a sieve body (701). A limiting sliding frame (702) that can slide and rotate on the limiting rotating shaft (1002) is provided at the bottom of the sieve body (701).

9. The novel screening mechanism for the roasting production of graphite electrodes according to claim 8, characterized in that: Two symmetrically distributed wedge-shaped chute bodies (1003) are fixedly installed at the acute angle end of the double-layer triangular frame body (1001) away from the first support rod (202). An L-shaped rotating shaft (1004) is provided on the wedge-shaped chute body (1003). An extension plate body (1005) is provided at the bottom of the wedge-shaped chute body (1003).

10. The novel screening mechanism for the roasting production of graphite electrodes according to claim 9, characterized in that: The shock absorber (8) includes a first wedge-shaped slider (801) that can move up and down within a wedge-shaped chute body (1003). A fifth spring (803) is provided between the first wedge-shaped slider (801) and an extension plate body (1005). On one side of the first wedge-shaped slider (801) that protrudes from the wedge-shaped chute body (1003), a capping wedge-shaped chute body (802) is fixedly installed. A second wedge-shaped slider (809) is slidably connected within the capping wedge-shaped chute body (802). A sixth spring (804) is provided between the second wedge-shaped slider (809) and the capping wedge-shaped chute body (802). A plate body (806) is rotatably connected to an L-shaped rotating shaft (1004). A first limiting protrusion (810) is provided on the second wedge-shaped slider (809). A second limiting protrusion (808) is provided on the side of the plate body (806) close to the second wedge-shaped slider (809). An inclined surface (812) is provided at the top of the plate body (806). An inclined surface protrusion (805) that cooperates with the inclined surface (812) is provided at the top of the capping wedge-shaped chute body (802). A seventh spring (807) is provided between the two plate bodies (806). A support column (811) is provided between the second wedge-shaped slider (809) and the extension plate body (1005).

Images