A special graphite electrode dust removal packaging device

Abstract

The utility model relates to the technical field related to graphite electrodes, and discloses a special graphite electrode dust removal and packaging device, which is used in conjunction with the graphite electrode and comprises: a dust removal system, a bracket, a conveying mechanism, a dust cleaning mechanism, a resistance tester, a flipping mechanism, a vacuum packaging machine and a recycling mechanism. The dust removal system is arranged above the bracket and passes through the overall dust removal and packaging device. A conveying mechanism 1, a dust cleaning mechanism, a conveying mechanism 2 and a flipping mechanism are arranged on the bracket in sequence, the vacuum packaging machine is arranged on one side of the flipping mechanism, the resistance tester is arranged on the other side of the flipping mechanism, and the recycling mechanism is arranged at the end of the bracket. The device reduces ash content and avoids its influence on resistivity by removing processing dust and adsorbed gas. After passing through the device, the ash content can be effectively reduced by more than 10%; the accuracy of the resistivity measurement value is improved, and the user uses three or six graphite electrodes to reduce the resistivity difference and optimize the matching, stabilize the electric field strength of the refining quartz crucible, and improve the use effect.

Description

Technical Field

[0001] The utility model relates to the technical field related to graphite electrodes, in particular to a special graphite electrode dust removal and packaging device. Background Art

[0002] Special graphite electrodes are the main consumable materials for arc-refining quartz crucibles, which are the basic materials for pulling single crystal silicon to prepare solar energy and semiconductors.

[0003] The refining of quartz crucibles generally uses 3 or 6 graphite electrodes as a group, and generates an arc by opening and closing them at a certain angle. This arc melts the quartz sand in the mold. Under the high-speed rotation of the mold holding equipment, the molten quartz sand forms a set shape as a quartz crucible. Quartz crucible is a quartz container necessary for the production of single crystal silicon, and is a consumable vessel for pulling single crystal silicon. A certain amount of quartz crucible is consumed for each furnace of single crystal silicon. Single crystal silicon is the main raw material for the production of large-scale integrated circuits and solar cells. The quality requirements for quartz crucibles are very strict. The quality of the graphite electrodes used to refine quartz crucibles determines the quality of the quartz crucibles. The most important indicators are ash content and resistivity.

[0004] The existing technologies all pursue product quality in production to ensure low ash content and low resistivity, while the packaging is ignored, and the processed products only need to be guaranteed not to be damaged.

[0005] Since graphite products have a high porosity (generally around 20%), their ash content is reduced after impurities are removed at high temperature in a halogen-containing gas. The dust and adsorbed gas left after mechanical processing will affect their ash content and resistivity. Therefore, this device is invented to remove the dust and adsorbed gas after mechanical processing and reduce its ash content and resistivity. Utility Model Content

[0006] The utility model aims to provide a special graphite electrode dust removal packaging device to solve the above problems.

[0007] In order to achieve the above objectives, the following technical solutions are provided:

[0008] A special graphite electrode dust removal and packaging device is used in conjunction with graphite electrodes, comprising: a dust removal system, a bracket, a conveying mechanism, a dust cleaning mechanism, a resistance tester, a flipping mechanism, a vacuum packaging machine and a recycling mechanism. The dust removal system is arranged above the bracket and runs through the entire dust removal and packaging device. The conveying mechanism has two groups, including a conveying mechanism one and a conveying mechanism two. The conveying mechanism one, the dust cleaning mechanism, the conveying mechanism two and the flipping mechanism are arranged on the bracket in sequence. The vacuum packaging machine is arranged on one side of the flipping mechanism, the resistance tester is arranged on the other side of the flipping mechanism, and the recycling mechanism is arranged at the end of the bracket.

[0009] Preferably, the transmission mechanism 1 includes: a servo motor, a rotating cylinder, a sprocket group, a seat bearing, a rubber roller group and a cycloid reducer. The two sides of the rubber roller group are respectively provided with seat bearings corresponding to them, and each of the seat bearings is fixedly connected to the bracket. The cycloid reducer is arranged on one side of the rubber roller group, and its output end is fixedly connected to the seat bearing on the same side of the rubber roller group. The seat bearing on the other side is provided with staggered sprocket groups, and the seat bearing can be driven to rotate in the same direction relative to each other through a belt. The servo motor is arranged on the bracket, located on one side of the seat bearing, and the rotating cylinder is fixed on the output end of the servo motor. The transmission mechanism 1 has the same structure as the transmission mechanism 2.

[0010] Preferably, the cleaning mechanism is arranged between the conveying mechanism one and the conveying mechanism two, and includes: a motor, a small pulley, a bearing frame, a rotating bearing, a brush and a large pulley. The motor is arranged on one side of the bracket, and a small pulley is provided at its output end. The bearing frame is arranged between two rubber roller groups of the conveying mechanism one and the conveying mechanism two and is fixed on the bracket. There are two rotating bearings, which are symmetrically arranged on the bearing frame. Each rotating bearing is provided with a certain number of brushes along the circumference of its sleeve. The large pulley is arranged between the two rotating bearings, connected to the small pulley by a belt, and can drive the rotating bearing sleeve to rotate.

[0011] Preferably, the flipping mechanism includes: a lifting cylinder, a flipping cylinder, a flipping rod and a top support. The lifting cylinder is arranged at the bottom of the bracket, and its output end passes through the bracket and is hinged to the flipping rod, and can perform vertical lifting and lowering movements. The flipping cylinder is fixedly connected to the output end of the lifting cylinder, and its output end is fixedly connected to one side of the flipping rod. When the output end of the flipping cylinder extends outward, the flipping rod can rotate along the fulcrum at the hinge point with the output end of the lifting cylinder. A top support is provided on the top of the flipping rod, and the top support is covered with insulating rubber for placing graphite electrodes.

[0012] Preferably, the resistance tester is arranged on one side of the turning mechanism, and the vacuum packaging machine is arranged on the other side of the turning mechanism.

[0013] Preferably, the output end of the lifting cylinder is hinged to one side of the flip rod, and a hinge is provided at the hinge. The output end of the lifting cylinder is overlapped with the other side of the flip rod.

[0014] Preferably, the output end of the rotary cylinder is also provided with a pushing rod for pushing the graphite electrode.

[0015] Preferably, the resistance tester measures the resistivity of the graphite electrode using a retractable measuring rod provided inside the resistance tester.

[0016] The beneficial effects of the utility model are:

[0017] The ash content of the product that has not passed through this device is 25ppm, and the influence of its resistance is fluctuating, that is, the measured value is inaccurate, which brings great trouble to users. The electric field strength of the refining quartz crucible fluctuates greatly, which makes it easy for users to cause the graphite electrode to fall off under the inherent process conditions, resulting in the scrapping of the quartz crucible. After passing through this device, its ash content is 10ppm; it can effectively reduce more than 10%. This device reduces the ash content and avoids its influence on resistivity by removing processing dust and adsorbed gas; and the resistivity measurement value is accurate. Users use three or six graphite electrodes to reduce the resistivity difference and optimize the matching, thereby improving its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 A top view of

[0020] Figure 3 This is a schematic diagram of the structure of the dust cleaning mechanism of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the turning mechanism and the vacuum packaging machine;

[0022] In the figure:

[0023] 1- bracket, 2- rotating cylinder, 3- sprocket set, 4- bearing with seat, 5- rubber roller set, 6- push rod, 7- cycloid reducer, 8- motor, 9- small pulley, 10- rotating bearing, 11- bearing frame, 12- large pulley, 13- brush, 14- lifting cylinder, 15- resistance tester, 16- flip cylinder, 17- flip rod, 18- hinge, 19- top support, 20- servo motor, 21- vacuum packaging machine, 22- measuring rod, 23- graphite electrode, 24- dust removal system, 25- recovery mechanism. DETAILED DESCRIPTION

[0024] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions of the schematic diagrams in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-4As shown, a special graphite electrode 23 dust removal and packaging device is used in conjunction with the graphite electrode 23, including: a dust removal system 24, a bracket 1, a conveying mechanism, a dust cleaning mechanism, a resistance tester 15, a flipping mechanism, a vacuum packaging machine 21 and a recycling mechanism 25. The dust removal system 24 is arranged above the bracket 1 and runs through the entire dust removal and packaging device. In order to simulate processing polishing, a soft brush 13 is used to brush away the processing dust; dust removal is carried out in a visible fume hood. There are two groups of conveying mechanisms, including a conveying mechanism 1 and a conveying mechanism 2. The conveying mechanism 1, the dust cleaning mechanism, the conveying mechanism 2 and the flipping mechanism are arranged on the bracket 1 in sequence, the vacuum packaging machine 21 is arranged on one side of the flipping mechanism, and the resistance tester 15 is arranged on the other side of the flipping mechanism. The recycling mechanism 25 is arranged at the end of the bracket 1 for recycling the graphite electrode 23 that fails the test.

[0026] In some embodiments, the transmission mechanism 1 includes: a servo motor 20, a rotary cylinder 2, a sprocket group 3, a seat bearing 4, a rubber roller group 5 and a cycloidal reducer 7. The surface of the rubber roller group 5 is covered with soft rubber, which can not only increase the friction but also avoid damage to the graphite electrode 23 rod; both sides of the rubber roller group 5 are respectively provided with seat bearings 4 corresponding to them, and each seat bearing 4 is fixedly connected to the bracket 1. The cycloidal reducer 7 is arranged on one side of the rubber roller group 5, and its output end is fixedly connected to the seat bearing 4 on the same side of the rubber roller group 5. The other side of the seat bearing 4 is installed with a staggered sprocket group 3, and the seat bearing 4 can be driven by a belt to rotate relative to the same direction. The servo motor 20 is arranged on the bracket 1, located On one side of the seat bearing 4, the rotating cylinder 2 is fixed on the output end of the servo motor 20. The output end of the rotating cylinder 2 is also provided with a pushing rod 6 for pushing the graphite electrode 23. When the graphite electrode 23 rolls forward on the rubber roller group 5 on the conveying mechanism 1, the servo motor 20 is controlled to start, and then the rotation angle of the rotating cylinder 2 is controlled to rotate the pushing rod 6 to the rear end of the graphite electrode 23. The rotating cylinder 2 is turned on to make the pushing rod 6 contact the graphite electrode 23, giving the graphite electrode 23 a forward driving force, so that the graphite electrode 23 can pass through the cleaning mechanism more uniformly and faster; the position and length of the pushing rod 6 of the rotating cylinder 2 can be set according to the length and running speed of the graphite electrode 23; the conveying mechanism 1 has the same structure as the conveying mechanism 2.

[0027] In some embodiments, a dust cleaning mechanism is disposed between conveying mechanism one and conveying mechanism two, and includes: a motor 8, a small pulley 9, a bearing frame 11, a rotating bearing 10, a brush 13 and a large pulley 12. The motor 8 is disposed on one side of the bracket 1, and a small pulley 9 is disposed at its output end. The bearing frame 11 is disposed between two rubber roller groups 5 of conveying mechanism one and conveying mechanism two, and is fixed on the bracket 1. There are two rotating bearings 10, which are symmetrically disposed on the bearing frame 11. Each rotating bearing 10 is provided with a certain number of brushes 13 along the circumference of its sleeve. The large pulley 12 is disposed between the two rotating bearings 10, fixed relatively to their inner rings, connected to the small pulley 9 through a belt, and can drive the sleeve of the rotating bearing 10 to rotate, thereby driving the brush 13 to rotate.

[0028] In some embodiments, the flipping mechanism includes: a lifting cylinder 14, a flipping cylinder 16, a flipping rod 17 and a top support 19. The lifting cylinder 14 is arranged at the bottom of the bracket 1, and its output end passes through the bracket 1 and is hinged to the flipping rod 17, and can perform vertical lifting and lowering movements. The flipping cylinder 16 is fixedly connected to the output end of the lifting cylinder 14, and its output end is fixedly connected to one side of the flipping rod 17. When the output end of the flipping cylinder 16 extends outward, the flipping rod 17 can rotate along the fulcrum at the hinge point with the output end of the lifting cylinder 14. A top support 19 is provided on the top of the flipping rod 17, and the top support 19 is covered with insulating rubber, which is used to place the graphite electrode 23 and plays an insulating role when measuring the resistivity of the graphite electrode 23, so that the detection result is more accurate.

[0029] In some embodiments, the resistance tester 15 is arranged on one side of the flipping mechanism, and the vacuum packaging machine 21 is arranged on the other side of the flipping mechanism. The resistivity measurement and vacuum packaging are both performed in a dust-free environment. The measuring rod 22 provided on the resistance tester 15 can be extended and retracted. When measuring the resistivity of the graphite electrode 23, the two measuring rods 22 with the same horizontal fixed spacing on the vacuum packaging machine are extended, and the output end of the lifting cylinder 14 is extended upward until the graphite electrode 23 tightly touches the measuring rod 22 to measure the resistivity.

[0030] In some embodiments, when the data of the graphite electrode 23 detected by the resistance tester 15 is qualified, the output end of the lifting cylinder 14 shrinks downward by a certain distance, and the flip cylinder 16 in the conveying mechanism 2 stops continuing to push forward, and the flip mechanism flips the graphite electrode 23 into the vacuum packaging machine 21 for vacuum packaging operation. When the data of the graphite electrode 23 detected by the resistance tester 15 is unqualified, the flip cylinder 16 in the conveying mechanism 2 continues to push forward, and pushes the unqualified graphite electrode 23 to the recovery mechanism 25 for recovery.

[0031] In some embodiments, the output end of the lifting cylinder 14 is hinged to one side of the flip rod 17, and a hinge 18 is also provided at the hinge. The output end of the lifting cylinder 14 is overlapped with the other side of the flip rod 17, and the output end of the flip cylinder 16 is pushed out to rotate the flip rod 17, and the top support 19 is tilted to flip the graphite electrode 23 into the vacuum packaging machine 21 to ensure that the sealing device is tightly connected to the resistance measuring device to avoid secondary contamination.

[0032] Example

[0033] like Figure 1-4 As shown, the graphite electrode 23 is placed on the rubber roller group 5 and driven by the sprocket group 3. The rotating cylinder 2 is used to assist the graphite electrode 23 to pass through the dust cleaning mechanism, and the four soft brushes 13 are rotated to clean the surface, and the dust is removed by ventilation; it enters the closed resistance tester 15 for measurement, and after the measurement is completed and qualified, it enters the vacuum packaging machine 21 for vacuum sealing, and after sealing, the resistivity label value is affixed; if the measurement is unqualified, the push rod 6 pushes the graphite electrode 23 into the recovery mechanism 25 for recycling.

Claims

1. A special graphite electrode dust removal and packaging device, used in conjunction with a graphite electrode, characterized in that: include: A dust removal system, a bracket, a conveying mechanism, a dust cleaning mechanism, a resistance tester, a flipping mechanism, a vacuum packaging machine and a recycling mechanism. The dust removal system is arranged above the bracket and runs through the entire dust removal and packaging device. The conveying mechanism has two groups, including a conveying mechanism one and a conveying mechanism two. The conveying mechanism one, the dust cleaning mechanism, the conveying mechanism two and the flipping mechanism are arranged on the bracket in sequence. The vacuum packaging machine is arranged on one side of the flipping mechanism, the resistance tester is arranged on the other side of the flipping mechanism, and the recycling mechanism is arranged at the end of the bracket.

2. A special graphite electrode dust removal and packaging device according to claim 1, characterized in that: The transmission mechanism 1 includes: a servo motor, a rotary cylinder, a sprocket group, a seat bearing, a rubber roller group and a cycloid reducer. The two sides of the rubber roller group are respectively provided with seat bearings corresponding to them, and each of the seat bearings is fixedly connected to the bracket. The cycloid reducer is arranged on one side of the rubber roller group, and its output end is fixedly connected to the seat bearing on the same side of the rubber roller group. The seat bearing on the other side is installed with staggered sprocket groups, and the seat bearing can be driven by a belt to rotate in the same direction relative to each other. The servo motor is arranged on the bracket, located on one side of the seat bearing, and the rotary cylinder is fixed on the output end of the servo motor. The transmission mechanism 1 has the same structure as the transmission mechanism 2.

3. The special graphite electrode dust removal and packaging device according to claim 1 is characterized in that: The cleaning mechanism is arranged between the conveying mechanism one and the conveying mechanism two, and includes: a motor, a small pulley, a bearing frame, a rotating bearing, a brush and a large pulley. The motor is arranged on one side of the frame, and a small pulley is arranged at the output end of the motor. The bearing frame is arranged between two rubber roller groups of the conveying mechanism one and the conveying mechanism two, and is fixed on the frame. There are two rotating bearings, which are symmetrically arranged on the bearing frame. Each rotating bearing is provided with a certain number of brushes along the circumference of its sleeve. The large pulley is arranged between the two rotating bearings, connected to the small pulley by a belt, and can drive the rotating bearing sleeve to rotate.

4. The special graphite electrode dust removal and packaging device according to claim 1 is characterized in that: The flipping mechanism includes: a lifting cylinder, a flipping cylinder, a flipping rod and a top support. The lifting cylinder is arranged at the bottom of the bracket, and its output end passes through the bracket and is hinged to the flipping rod, and can perform vertical lifting and lowering movements. The flipping cylinder is fixedly connected to the output end of the lifting cylinder, and its output end is fixedly connected to one side of the flipping rod. When the output end of the flipping cylinder extends outward, the flipping rod can rotate along the fulcrum at the hinge point with the output end of the lifting cylinder. A top support is provided on the top of the flipping rod, and the top support is covered with insulating rubber for placing graphite electrodes.

5. The special graphite electrode dust removal and packaging device according to claim 1, characterized in that: The resistance tester is arranged on one side of the turning mechanism, and the vacuum packaging machine is arranged on the other side of the turning mechanism.

6. A special graphite electrode dust removal and packaging device according to claim 4, characterized in that: The output end of the lifting cylinder is hinged to one side of the flip rod, and a hinge is provided at the hinge. The output end of the lifting cylinder is overlapped with the other side of the flip rod.

7. The special graphite electrode dust removal and packaging device according to claim 2, characterized in that: The output end of the rotary cylinder is also provided with a pushing rod for pushing the graphite electrode.

8. The special graphite electrode dust removal and packaging device according to claim 5, characterized in that: The resistance tester measures the resistivity of the graphite electrode by using a retractable measuring rod arranged inside the resistance tester.

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