A dismounting clamp for a single crystal furnace copper electrode ceramic sheath
By designing a disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace, and utilizing the cooperation of wedges and locking blocks, the problem of the ceramic sheath getting stuck was solved, enabling convenient disassembly and protection of the equipment, and improving maintenance efficiency.
Patent Information
- Application Number
- CN202521721818.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-13
AI Technical Summary
The ceramic sheath in the single crystal furnace is stuck and cannot be removed normally, which affects maintenance time and may damage the ceramic sheath and copper electrodes.
A disassembly fixture for ceramic sheaths of copper electrodes in single-crystal furnaces is designed, comprising a crossbar, a slide bar, a gripper, a top bar, and a locking component. Through the cooperation of wedges and locking blocks, the gripper can clamp and rotate, facilitating the disassembly of the ceramic sheath.
It enables convenient removal of the ceramic sheath, avoiding damage to the ceramic sheath and copper electrodes, and improving maintenance efficiency.
Smart Images
Figure CN224674805U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of auxiliary equipment for single crystal furnaces, specifically to a disassembly fixture for the ceramic sheath of copper electrodes in a single crystal furnace. Background Technology
[0002] Currently, in the monocrystalline silicon rod pulling industry, heating in a monocrystalline furnace involves transmitting current to the main heater inside the furnace via copper electrodes. During this current transmission, dust can cause arcing and damage to the copper electrodes, potentially leading to heater damage, silicon leakage, and rod explosion. Therefore, during each furnace disassembly and cleaning of the hot zone, dust is thoroughly cleaned from the bottom cavity and furnace bottom plate, with particular attention paid to oxides in the gap between the copper electrodes and their ceramic sheaths. However, after one furnace cycle, the gap between the ceramic sheath and the electrodes and furnace bottom plate becomes filled, causing the ceramic sheath to jam and become impossible to remove, thus impacting maintenance time. Utility Model Content
[0003] This invention addresses the problem of ceramic sheaths in single crystal furnaces becoming stuck and unable to be properly removed, thus affecting maintenance time. It provides a disassembly jig for the ceramic sheath of copper electrodes in single crystal furnaces, which facilitates the disassembly of ceramic sheaths in single crystal furnaces without damaging the ceramic sheath and copper electrodes.
[0004] The technical solution adopted in this utility model is: A disassembly fixture for the ceramic sheath of a copper electrode in a single-crystal furnace is provided, comprising: The crossbar has elongated holes symmetrically opened at its top with its own central axis as the axis of symmetry, and a through hole is also opened in the middle of the crossbar. Two sliding rods are slidably connected to a crossbar through elongated holes. One end of each sliding rod is threaded with a nut, and the other end is equipped with a limiting rod. The diameter of each limiting rod is larger than the diameter of the sliding rod. Two grippers are respectively located at the other end of the limiting rod and are used to clamp the ceramic sheath; each gripper has a wedge on its outer wall surface; The top rod has one end rotatably connected to the crossbar through a through hole; A locking element is located on the end face of the push rod facing the two grippers; When the push rod rotates, the locking mechanism is used to adjust the wedges on the outer walls of the two grippers to move towards each other.
[0005] Optionally, the clamping surface of each gripper is a curved surface.
[0006] Optionally, a protective pad is provided on the gripping surface of each gripper.
[0007] Optionally, the locking element includes: The connecting block is rotatably connected to the end face of the push rod facing the two grippers; Two locking blocks are respectively located on the outer walls of the two sides of the connecting block. Each locking block has a trapezoidal slot at its bottom, and each slot is used for the wedge block on the same side of the two grippers to enter. When the connecting block moves toward the two grippers, each locking block presses against the wedge block located on the same side of the two grippers through the locking slot, causing the two wedge blocks to move toward each other.
[0008] Optionally, the angle between the inner wall surface of each locking block within the locking slot and the central axis of the top rod is 10° to 20°; the angle between the outer wall surface of each wedge block in contact with the corresponding locking block and the central axis of the top rod is 10° to 20°.
[0009] Optionally, when the relative distance between the central axes of the two slide bars is at its maximum, the vertical distance between the outer bottom end face of each locking block and the outer bottom end face of the crossbar is greater than the vertical distance between the outer top end face of the two grippers and the outer bottom end face of the crossbar; when the relative distance between the central axes of the two slide bars is at its minimum, the vertical distance between the outer bottom end face of each locking block and the outer bottom end face of the crossbar is less than the vertical distance between the outer bottom end face of the two grippers and the outer bottom end face of the crossbar.
[0010] Optionally, a handle is provided on the outer top of the top rod.
[0011] The beneficial effects of this utility model are: First, place the two clamping claws outside the ceramic sleeve. At this point, the clamping surfaces of the two claws are not in contact with the outer wall of the ceramic sleeve. Next, adjust the movement of the push rod, causing it to move up and down along the central axis of the through hole inside the crossbar. During the movement of the push rod, the locking element at the bottom of the push rod will press against the wedges on the outer wall of the two claws. By pressing the multiple wedges, the locking element allows the two claws to move towards the ceramic sleeve until the two claws firmly clamp the ceramic sleeve. Then, rotate the push rod. The push rod, through the mutually limiting locking element and wedges, drives the claws to rotate. Because the claws clamp the ceramic sleeve, they can remove the ceramic sleeve from the copper electrode, thus completing the disassembly of the ceramic sleeve. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1This is a three-dimensional structural diagram of a disassembly fixture for a single-crystal furnace copper electrode ceramic sheath disclosed in this embodiment. Figure 1 ; Figure 2 A three-dimensional structural diagram of a disassembly fixture for a ceramic sheath of a copper electrode in a single-crystal furnace. Figure 2 ; Figure 3 This is a side view of the gripper's structure. Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.
[0014] Figure label: 1-Horizontal bar, 10-Elongated hole, 11-Through hole; 2-Top rod, 20-Connecting block, 21-Clocking block, 210-Bayonet; 3-Slide rod, 30-Nut, 31-Limit rod; 4-Claw, 40-Wedge; 5- Protective pad; 6-Handle. Detailed Implementation
[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0016] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.
[0017] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.
[0018] Example
[0019] like Figure 1 and Figure 2As shown in the figure, this embodiment discloses a disassembly fixture for a ceramic sheath of a copper electrode in a single crystal furnace, including a crossbar 1, two sliding rods 3, two grippers 4, a top rod 2, and a locking component. Specifically, the crossbar 1 has two elongated holes 10, and a through hole 11 located between the two elongated holes 10. The two elongated holes 10 are arranged in a centrally symmetrical manner with the central axis of the crossbar 1 as the axis of symmetry. A sliding rod 3 is provided inside each elongated hole 10, that is, the sliding rod 3 is slidably connected to the crossbar 1 through the elongated hole 10. The outer wall surface of the sliding rod 3 near its top has external threads, and a nut 30 is threadedly connected to the sliding rod 3. The other end is provided with a limiting rod 31. The diameter of the limiting rod 31 is larger than the diameter of the sliding rod 3. That is, the nut 30 and the limiting rod 31 work together to restrict the sliding rod 3 on the crossbar 1, so that the sliding rod 3 can slide continuously within the elongated hole 10 and will not fall out of the elongated hole 10. A gripper 4 is provided on the outer bottom end face of each limiting rod 31, and the gripper 4 on the outer bottom of the two limiting rods 31 is used to clamp the ceramic sheath outside the copper electrode. A wedge 40 is provided on the outer wall surface of each gripper 4. It should be noted that in this embodiment, the number of wedges 40 is at least 4, with one wedge 40 provided on each of the two outer wall surfaces of each gripper 4. The outer wall surface of the push rod 2 has a partial external thread, so that the push rod 2 can be threadedly connected to the cross rod 1 through the through hole 11. A locking element is provided on the end face of the push rod 2 facing the two grippers 4. The locking element can adjust the distance between the two grippers 4 by contacting and pressing with the wedge block 40, so that the two grippers 4 can move towards the ceramic sleeve and clamp. That is, by adjusting the position of the push rod 2, the push rod 2 moves towards the two grippers 4 along the central axis of the through hole 11. During the movement of the push rod 2, the locking element will move towards the two grippers 4 at the same time. During the movement of the locking element, the locking element will press and adjust with the wedge block 40 on the outer wall of the two grippers 4, so that the two grippers 4 move towards the ceramic sleeve. Until the two grippers 4 contact the ceramic sleeve and are tightly pressed, the push rod 2 can be rotated to drive the grippers to rotate, thereby removing the ceramic sleeve outside the copper electrode. The whole process is convenient and quick, and will not seriously damage the ceramic sleeve.
[0020] Furthermore, each elongated hole 10 extends along the length of the crossbar 1, allowing the slide bar 3 to move a certain distance within the elongated hole 10. This movement distance provides adjustable margin for the two grippers 4 during the clamping of the ceramic sleeve. In addition, the clamping surface of each gripper 4 is curved, and a protective pad 5 is provided on the clamping surface. The curved clamping surface of the gripper 4 facilitates contact between the gripper and the outer wall of the ceramic sleeve, increasing the contact area between the gripper 4 and the outer wall of the ceramic sleeve, thus increasing the friction between them and facilitating the removal of the ceramic sleeve from the copper electrode. The protective pad 5 not only further increases the friction between the gripper 4 and the ceramic sleeve but also prevents serious damage to the ceramic sleeve.
[0021] Furthermore, the locking component includes a connecting block 20 and two locking blocks 21. Specifically, the connecting block 20 is fixedly mounted on the outer bottom end face of the top rod 2. A locking block 21 is respectively provided on the outer wall surfaces of opposite sides of the connecting block 20. A slot 210 is opened inside each locking block 21. The cross-section of the slot 210 is trapezoidal, with the larger diameter end facing the gripper 4 and the smaller diameter end facing the crossbar 1. That is, the inner wall surface of the locking block 21 is inclined. The locking block 21 contacts the inclined surface of the wedge block 40 through its own inclined surface, so that during the movement of the top rod 2, the locking block 21 contacts the wedge block 40 and squeezes the wedge block 40, causing the wedge block 40 to drive the gripper 4 to move towards the ceramic sheath, thereby completing the clamping of the ceramic sheath.
[0022] The angle between the inner wall surface of the aforementioned locking block 21 located within the locking slot 210 and the central axis of the top rod 2 is 10° to 20°. The angle between the outer wall surface of each wedge block 40 that contacts the corresponding locking block 21 and the top rod 2 is 10° to 20°, so that the locking block 21 and the wedge block 40 can make a squeezing contact, thereby causing the locking block 21 to squeeze the wedge block 40 to drive the gripper 4 to move.
[0023] When the relative distance between the central axes of the two sliding rods 3 is at its maximum, that is, when the two sliding rods 3 are located at the inner edge of the elongated hole 10, the vertical distance between the outer bottom end face of the locking block 21 and the outer bottom end face of the crossbar 1 is (e.g.) Figure 3 The line marked B in the middle is greater than the vertical distance between the outer top end face of the two grippers 4 and the outer bottom end face of the crossbar 1 (e.g., Figure 3 (C) In addition, when the relative distance between the central axes of the two slide bars 3 is the smallest, the vertical distance between the outer bottom end face of each locking block 21 and the outer bottom end face of the crossbar 1 (e.g., Figure 3 The line marked B in the middle is the vertical distance between the outer bottom end face of the two gripper 4 and the outer bottom end face of the crossbar 1 (e.g., ...). Figure 3As indicated by line A in the diagram, during the sliding of the slide rod 3 within the elongated hole 10, the locking block 21 will not disengage the wedge block 40 from its locking slot 210, regardless of whether the push rod 2 moves up or down. This allows the locking block 21 to quickly press and adjust the wedge block 40. Furthermore, a handle 6 is provided at the top outer edge of the push rod 2, allowing the user to hold and rotate the push rod 2 with ease, achieving a labor-saving effect.
[0024] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A disassembly fixture for a ceramic sheath of a copper electrode in a single-crystal furnace, characterized in that, include: The crossbar has elongated holes symmetrically opened at its top with its own central axis as the axis of symmetry, and a through hole is also opened in the middle of the crossbar. Two sliding rods are slidably connected to the crossbar through the elongated hole. One end of each sliding rod is threaded with a nut, and the other end is provided with a limiting rod. The diameter of each limiting rod is larger than the diameter of the sliding rod. Two grippers are respectively disposed at the other end of the limiting rod for clamping the ceramic sheath; each gripper has a wedge on its outer wall surface; The top rod has one end slidably connected to the crossbar through a through hole; A locking element is provided on the end face of the top rod facing the two grippers; When the top rod moves downward along its own central axis, the locking member presses the wedges on the outer wall of the two grippers and causes the two grippers to move towards each other.
2. The disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace according to claim 1, characterized in that, The clamping surface of each of the grippers is an arc surface.
3. The disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace according to claim 1, characterized in that, Each of the gripper claws has a protective pad on its clamping surface.
4. The disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace according to claim 1, characterized in that, The locking element includes: A connecting block is provided on the end face of the top rod facing the two grippers; Two locking blocks are respectively disposed on the outer wall surfaces of the two sides of the connecting block. Each locking block has a trapezoidal slot at its outer bottom, and each slot is used for the entry of the wedge block on the same side of the two grippers. When the connecting block moves toward the two grippers, each of the locking blocks presses against the wedges located on the same side of the two grippers through the locking slot, causing the two wedges to move toward each other.
5. The disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace according to claim 4, characterized in that, The angle between the inner wall surface of each of the locking blocks located within the locking slot and the central axis of the top rod is 10° to 20°; the angle between the outer wall surface of each of the wedge blocks and the corresponding locking blocks and the central axis of the top rod is 10° to 20°.
6. The disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace according to claim 5, characterized in that, When the relative distance between the central axes of the two slide bars is at its maximum, the vertical distance between the outer bottom end face of each locking block and the outer bottom end face of the crossbar is greater than the vertical distance between the outer top end face of the two grippers and the outer bottom end face of the crossbar; when the relative distance between the central axes of the two slide bars is at its minimum, the vertical distance between the outer bottom end face of each locking block and the outer bottom end face of the crossbar is less than the vertical distance between the outer bottom end face of the two grippers and the outer bottom end face of the crossbar.
7. The disassembly fixture for the ceramic sheath of the copper electrode in a single crystal furnace according to claim 1, characterized in that, The top of the top rod is provided with a handle.