Automatic discharging method for graphitization furnace crucible

Abstract

According to the automatic discharging method for the crucible of the graphitization furnace, a material suction system, a crucible loosening system and a crucible lifting system are arranged on a moving trolley system, the moving trolley system is arranged on a walking cart system, and filling materials on the periphery of the crucible are sucked away through the material suction system; then the crucible is covered by the crucible loosening system, the crucible is conveyed under the action of back-and-forth movement of the moving trolley system, finally, the loosened crucible is clamped and lifted out by the crucible lifting system, and the bottom of the crucible is supported by the crucible lifting system in the lifting-out process; in the whole process, the walking cart system can move in the longitudinal direction of the graphitization furnace, the moving trolley system can move in the transverse direction of the graphitization furnace, and the material suction system, the crucible loosening system and the crucible lifting system can move in the vertical direction of the graphitization furnace so as to correspond to crucibles at different positions. According to the device, automatic discharging of the crucible in the production process of the crucible graphitization furnace is achieved, manual assistance is not needed, and the safety problem is avoided.

Description

Technical Field

[0001] The invention relates to a method for taking out a crucible from a graphitization furnace, in particular to an automatic method for taking out a crucible from a graphitization furnace. Background Art

[0002] The graphitization process is one of the important processes in the production of negative electrodes. Crucible graphitization furnaces and box-type graphitization furnaces are often used in this process. In the production of crucible graphite furnaces, due to the high furnace temperature, the resistance material filled between the crucibles, and the resistance material sticking around the crucibles, the crucibles often need manual assistance to loosen the crucibles to a certain extent, and then the crucibles are hoisted out of the furnace by the crucible clamp on the overhead crane. This process has a high operating environment temperature and a lot of dust, which has certain production safety risks and takes up more manpower.

[0003] Therefore, it is necessary to develop an automatic method for taking out the crucible from a graphitization furnace to solve the safety problem of the crucible taking out process, while also improving production efficiency and automation level. Summary of the invention

[0004] The purpose of the present invention is to provide a method for automatically taking out a crucible from a graphitization furnace, which is used to solve the safety problem of the crucible taking out process and also improve the production efficiency and automation level.

[0005] The technical solution of the present invention is: a method for automatically taking out a crucible from a graphitization furnace. The method comprises the following steps: a material suction system, a crucible loosening system and a crucible lifting system are arranged on a mobile trolley system; the mobile trolley system is arranged on a traveling trolley system; the filling material around the crucible is sucked out by the material suction system; the crucible is then covered by the crucible loosening system; and the crucible is delivered under the back-and-forth movement of the mobile trolley system; finally, the loosened crucible is clamped and lifted out by the crucible lifting system; during the lifting out process, the bottom of the crucible is supported by the crucible lifting system; during the whole process, the traveling trolley system can move along the longitudinal direction of the graphitization furnace, the mobile trolley system can move along the transverse direction of the graphitization furnace, the material suction system, the crucible loosening system and the crucible lifting system can move along the vertical direction of the graphitization furnace to correspond to crucibles at different positions.

[0006] In the aforementioned method for automatically taking out a crucible from a graphitizing furnace, when the suction system sucks away the filling material, the suction pipe hydraulic cylinder of the suction system is used to extend and retract the filling material telescopic suction pipe, so that the filling material telescopic suction pipe can reach the surface of the filling material, and the filling material is sucked into the filling material buffer bin through the negative pressure suction device.

[0007] In the aforementioned method for automatically taking out a crucible from a graphitizing furnace, when the crucible loosening system loosens the crucible, the loosening device hydraulic cylinder is extended to drive the loosening device guide rod downward, and the loosening device cage is moved above the crucible along the direction of the guide rod, and the position of the loosening device cage is adjusted to be aligned with the crucible, and the loosening device cage is continued to be lowered so that the loosening device cage covers the upper part of the crucible. At this time, the crucible is driven to move slightly by the shaking generated by the moving trolley system moving back and forth along the traveling trolley system, thereby achieving the loosening of the crucible.

[0008] In the aforementioned method for automatically taking out a crucible from a graphitizing furnace, when the crucible lifting system is in action, first, the L-shaped tray is in an upper open state, and the crucible lifting hydraulic cylinder is extended to drive the crucible lifting guide rod to extend downward, so that the crucible clamp is lowered to a position suitable for clamping the crucible, and then the crucible lifting hydraulic cylinder lifts the crucible clamp, and the crucible is clamped by the crucible clamp due to its own weight. After being lifted to a certain height, the L-shaped tray is rotated to a lower lifting state by the tray rotating device, thereby providing secondary protection for the lifting of the crucible.

[0009] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a material suction system, a crucible loosening system and a crucible lifting system on the mobile trolley system. The material suction system can be used to remove the filling material between the crucibles. The crucible can be loosened by covering the crucible with a loosening device cage on the crucible loosening system and then moving it back and forth, thereby facilitating the subsequent removal of the crucible. The crucible lifting system is provided with an L-shaped tray and a tray rotating device. After the crucible is clamped, the L-shaped tray is rotated to support the crucible to ensure that the crucible is safely removed from the furnace.

[0010] The method of the invention realizes the automatic taking out of the crucible in the production process of the crucible graphitization furnace, does not require manual assistance, avoids safety problems, and improves production efficiency, automation level and production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the device of the present invention; Figure 2 It is a schematic diagram of the structure of the L-shaped tray in the device of the present invention after being rotated 90°; Figure 3 This is the plan view of the crucible during the process of taking out of the crucible graphitization furnace.

[0012] Figure markings: 1-traveling trolley system, 2-moving trolley system, 3-suction system, 301-filling material buffer bin, 302-negative pressure suction device, 303-filling material telescopic suction pipe, 304-suction pipe hydraulic cylinder, 4-crucible loosening system, 401-loosening device guide rod, 402-loosening device cage, 403-loosening device hydraulic cylinder, 5-crucible lifting system, 501-crucible lifting guide rod, 502-crucible clamp, 503-crucible lifting hydraulic cylinder, 504-horizontal mounting plate, 505-L-type pallet, 506-tray rotating device. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0014] An embodiment of the present invention: A method for automatically taking a crucible out of a graphitization furnace, wherein a suction system 3, a crucible loosening system 4 and a crucible lifting system 5 are arranged on a mobile trolley system 2, and the mobile trolley system 2 is arranged on a traveling trolley system 1, and the filling material around the crucible is sucked out by the suction system 3, and then the crucible is covered by the crucible loosening system 4, and the crucible is delivered under the back and forth movement of the mobile trolley system 2, and finally the loosened crucible is clamped and lifted out by the crucible lifting system 5, and the bottom of the crucible is supported by the crucible lifting system 5 during the lifting process, and during the whole process, the traveling trolley system 1 can move along the longitudinal direction of the graphitization furnace, the mobile trolley system 2 can move along the lateral direction of the graphitization furnace, and the suction system 3, the crucible loosening system 4 and the crucible lifting system 5 can move along the vertical direction of the graphitization furnace to correspond to crucibles at different positions.

[0015] The method of the present invention is mainly completed by the following systems: a traveling trolley system 1, on which a moving trolley system 2 is arranged, and on which a suction system 3, a crucible loosening system 4 and a crucible lifting system 5 are arranged.

[0016] After the graphitization process is completed, the insulation material suction crane in the graphitization workshop is used to suck out the upper filling material of the furnace chamber to expose the crucible, and then the ordinary crane is used to lift the first row of crucibles. After the first row of crucibles are lifted out, the outer side of the second row of crucibles is basically not filled with filling materials. The suction system 3 is used to Figure 3 As shown in a, part of the filling material is sucked out to produce a gap inside the crucible, and then the crucible loosening system 4 starts the loosening action at a. After the suction system 3 and the crucible loosening system 4 have been operated for many times, the second row of crucibles are loosened to a certain extent, and then the crucible is lifted to a certain height by the crucible lifting system 5 before being taken out of the furnace. This automatic crucible unloading device for graphitization furnace is used in sequence to take all subsequent crucibles out of the furnace together.

[0017] The suction system 3 includes a filling material buffer bin 301 and a negative pressure suction device 302 arranged on the mobile trolley system 2, which are connected by a pipeline. A filling material telescopic suction pipe 303 is arranged at the bottom of the negative pressure suction device 302. The filling material telescopic suction pipe 303 includes a fixed pipe section and a movable pipe section, wherein the fixed pipe section is connected to the negative pressure suction device 302 and a suction pipe hydraulic cylinder 304 is installed thereon, and the output end of the suction pipe hydraulic cylinder 304 is fixedly connected to the movable pipe section.

[0018] The crucible loosening system 4 includes a conduit installed at the bottom of the mobile trolley system 2, in which a loosening device guide rod 401 is movably installed, and the bottom head end of the loosening device guide rod 401 is connected to a loosening device cage 402, and a loosening device hydraulic cylinder 403 is fixed on the conduit, and the head end of the loosening device hydraulic cylinder 403 is connected to the loosening device guide rod 401.

[0019] The crucible lifting system 5 includes a fixed tube installed at the bottom of the mobile trolley system 2, on which a crucible lifting guide rod 501 is movably connected, and a crucible clamp 502 is connected to the head end of the crucible lifting guide rod 501. A crucible lifting hydraulic cylinder 503 is installed on the fixed tube, and the output end of the crucible lifting hydraulic cylinder 503 is fixedly connected to the crucible lifting guide rod 501. A horizontal mounting plate 504 is provided at the bottom head end of the crucible lifting guide rod 501, and an L-shaped tray 505 is movably mounted on the other end of the horizontal mounting plate 504. The L-shaped tray 505 is fixedly connected to a tray rotating device 506 on the horizontal mounting plate 504.

[0020] The tray rotating device 506 is a motor, the motor end is fixed on the side wall of the horizontal mounting plate 504, and its output end is rotatably connected to the L-shaped tray 505. The L-shaped tray 505 can be rotated 90 degrees by the rotation of the motor to support the bottom of the crucible.

[0021] The present invention centrally arranges the material suction system 3, the crucible loosening system 4 and the crucible lifting system 5 on the trolley (mobile trolley system 2) of the electric double-beam bridge crane (traveling trolley system 1); the traveling trolley system 1 travels in the factory to realize the movement of the automatic furnace unloading device of the graphitization furnace crucible in the graphitization furnace area, and the mobile trolley system 2 can travel along the length direction of the traveling trolley system 1.

[0022] The structure of the automatic crucible unloading device involved in the method of the present invention is as follows: Figure 1 and Figure 2 As shown, including: (1) The traveling trolley system 1 includes a double-beam bridge and an end beam driving mechanism, which can run along the longitudinal track of the workshop. This is an existing mature technology and its structure will not be described in detail here.

[0023] (2) The mobile trolley system 2, the material suction system 3, the crucible loosening system 4 and the crucible lifting system 5 are all integrated on the mobile trolley system 2. Through the movement of the trolley system and the trolley system, the crucible discharge device can be positioned at any position in the furnace area.

[0024] (3) The material suction system 3 is composed of a filling material buffer bin 301, a negative pressure material suction device 302, a filling material telescopic material suction pipe 303, and a material suction pipe hydraulic cylinder 304; (4) The crucible loosening system 4 is composed of a loosening device guide rod 401, a loosening device cage 402, and a loosening device hydraulic cylinder 403; (5) The crucible lifting system 5 is composed of a crucible lifting guide rod 501, a crucible clamp 502, a crucible lifting hydraulic cylinder 503, a horizontal mounting plate 504, an L-shaped tray 505, a tray rotating device 506 and other components.

[0025] (6) The electrical and control system mainly includes the electrical control cabinet, wires and cables, bridge pipelines, cab, and ground remote control device, which is the nerve unit that controls all actions of the entire device. The electrical control system adopts a PLC programmable controller to realize the centralized collection of all control signals, and the device of the present invention is fully operated in the overhead crane cab through the operation box and terminal operating system or through the remote control device on the ground.

[0026] The method of the present invention is specifically as follows: after graphitization is completed and the crucible is cooled to a certain temperature and is ready for being discharged from the furnace, the insulation material suction crane in the graphitization workshop is first used to suck out the filling material on the upper layer of the furnace chamber to expose the crucible, and then a common crane is used to lift the first row of crucibles, and then the automated crucible discharge device of the present invention is moved to the top of the furnace chamber to be discharged from the furnace, and the suction pipe hydraulic cylinder 304 of the suction system 3 is used to realize the extension and retraction of the filling material telescopic suction pipe 303, so that the filling material telescopic suction pipe 303 can reach the surface of the filling material, and the filling material is sucked into the filling material buffer bin 301 through the negative pressure suction device 302. After the filling material around the upper end of the crucible is sucked away, the mobile trolley system 2 moves horizontally along the traveling trolley system 1, and moves the crucible loosening system 4 to the top of the crucible from which the filling material has just been sucked away. The loosening device hydraulic cylinder 403 extends to drive the loosening device guide rod 401 downward, and moves the loosening device cage 402 along the direction of the guide rod to the top of the crucible. The position of the loosening device cage 402 is adjusted to align with the crucible, and the loosening device cage 402 continues to be lowered so that the loosening device cage 402 covers the upper part of the crucible. At this time, the shaking caused by the moving trolley system 2 moving back and forth along the traveling trolley system 1 drives the crucible to move slightly, thereby loosening the crucible. After the crucible is completely loosened, the crucible lifting system 5 is moved to the top of the crucible by moving the mobile trolley system 2. At this time, the L-shaped tray 505 is in the upper open state, that is, Figure 1The crucible lifting hydraulic cylinder 503 extends to drive the crucible lifting guide rod 501 to extend downward, and the crucible clamp 502 is lowered along the direction of the crucible lifting guide rod 501 to a suitable position for clamping the crucible, and the self-locking on the crucible clamp 502 is closed to put it in a clamped state. Then the crucible lifting hydraulic cylinder 503 lifts the crucible clamp 502, and the crucible is clamped by the crucible clamp 502 due to its own weight. After lifting a certain distance, the L-shaped tray 505 is rotated to the lower lifting state by the tray rotating device 506, as shown in FIG. Figure 2 The position shown provides secondary protection for the crucible during lifting. When the crucible is lifted to the vicinity of the designated position, the L-shaped tray 505 is rotated to the upper open state, and then the crucible is lowered to the designated position. As the crucible falls to the ground, the crucible clamp 502 gradually becomes open. At this time, the self-locking on the crucible clamp 502 is opened to keep it in the open state, so that the crucible clamp 502 can be reset as the crucible lifting system 5 rises and is successfully separated from the crucible. The automated crucible unloading device works reciprocatingly until all the crucibles are out of the furnace. The crucible clamp 502 in the crucible lifting system 5 can adopt a clamp structure designed by our company. The clamp structure is described in detail in the patent document CN217708564U applied for by our company, and its specific structure will not be described in detail here.

[0027] The components directly contacting the high-temperature crucible and the filling material, such as the filling material telescopic suction pipe 303, the loosening device guide rod 401 and the loosening device cage 402 of the loosening crucible system 4, the crucible clamp 502 and the L-shaped tray 505, are all made of high-temperature resistant and wear-resistant materials.

[0028] During the entire automation process, the traveling trolley system 1 moves longitudinally to correspond to different rows in the crucible graphite furnace, while the mobile trolley system 2 can move laterally along the traveling trolley system 1 to correspond to crucibles at different positions in the same row, and the setting of the hydraulic cylinder can correspond to crucibles of different depths.

Claims

1. A method for automatically removing a graphitization furnace crucible, characterized in that: By arranging a material suction system (3), a crucible loosening system (4) and a crucible lifting system (5) on a mobile trolley system (2), the mobile trolley system (2) is arranged on a walking trolley system (1), the material suction system (3) sucks away the filling material around the crucible, and then the crucible is covered by the crucible loosening system (4), and the crucible is delivered under the back-and-forth movement of the mobile trolley system (2), and finally the loosened crucible is clamped and lifted out by the crucible lifting system (5), and the bottom of the crucible is supported by the crucible lifting system (5) during the lifting process. During the whole process, the walking trolley system (1) can move along the longitudinal direction of the graphitization furnace, the mobile trolley system (2) can move along the transverse direction of the graphitization furnace, and the material suction system (3), the crucible loosening system (4) and the crucible lifting system (5) can move along the vertical direction of the graphitization furnace to correspond to crucibles at different positions.

2. The method for automatically removing a graphitization furnace crucible according to claim 1, characterized in that: When the suction system (3) sucks away the filling material, the filling material telescopic suction pipe (303) is extended and retracted through the suction pipe hydraulic cylinder (304) of the suction system (3), so that the filling material telescopic suction pipe (303) can reach the surface of the filling material, and the filling material is sucked into the filling material buffer bin (301) through the negative pressure suction device (302).

3. The method for automatically removing a graphitization furnace crucible according to claim 1, characterized in that: When the crucible loosening system (4) loosens the crucible, the loosening device hydraulic cylinder (403) extends to drive the loosening device guide rod (401) downward, and the loosening device cage (402) is moved along the direction of the guide rod to above the crucible. The position of the loosening device cage (402) is adjusted so that it is aligned with the crucible, and the loosening device cage (402) is further lowered so that the loosening device cage (402) covers the upper part of the crucible. At this time, the moving trolley system (2) moves back and forth along the moving trolley system (1) to generate shaking, which drives the crucible to move slightly, thereby achieving the loosening of the crucible.

4. The method for automatically removing a graphitization furnace crucible according to claim 1, characterized in that: When the crucible lifting system (5) is in operation, the L-shaped tray (505) is first in an upper open state, the crucible lifting hydraulic cylinder (503) is extended to drive the crucible lifting guide rod (501) to extend downward, and the crucible clamp (502) is lowered to a position suitable for clamping the crucible, and then the crucible lifting hydraulic cylinder (503) lifts the crucible clamp (502), and the crucible is clamped by the crucible clamp (502) due to its own weight. After the crucible is lifted to a certain height, the tray rotating device (506) rotates the L-shaped tray (505) to a lower lifting state, thereby providing secondary protection for the lifting of the crucible.

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