Free-holding inner complex connection device and single crystal furnace

Abstract

The application belongs to the technical field of single crystal furnaces, and discloses a free-inside-putting connecting device and a single crystal furnace. The free-inside-putting connecting device is used for a single crystal furnace and comprises a connecting seat, a connecting mechanism and a guide mechanism. The connecting seat is used for being connected with a weight of the single crystal furnace, and the outer diameter of the connecting seat is smaller than the inner diameter of a secondary chamber furnace cylinder of the single crystal furnace. The connecting mechanism is arranged at the bottom of the connecting seat and is used for being connected with a charging cylinder of the single crystal furnace. The guide mechanism is arranged on the connecting seat and is matched with the inner wall of the secondary chamber furnace cylinder in outer contour. The free-inside-putting connecting device can avoid the knocking between the charging cylinder and the inner wall of the secondary chamber furnace cylinder in the lifting process, ensure the smooth entry and exit of the charging cylinder into the secondary chamber furnace cylinder, and does not need to reform the charging cylinder, thereby improving the efficiency and reducing the cost.

Description

Technical Field

[0001] This application relates to the field of single crystal furnace technology, specifically to a supportless internal re-injection connection device and a single crystal furnace. Background Technology

[0002] With the rapid development of the photovoltaic industry, the requirements for the intelligence and automation of monocrystalline furnace equipment and control systems are also increasing. Currently, as the furnace size and material feeding capacity of monocrystalline furnaces increase, the frequency of refeeding is also increasing. Refeeding is crucial in the entire production process and is also the link that relies most heavily on personnel.

[0003] In the existing refeeding stage, the lifting device is connected to the quartz feeding cylinder via a counterweight. During the raising and lowering of the quartz feeding cylinder, operators must monitor it closely and manually support it to ensure it enters smoothly without colliding with the auxiliary furnace cylinder. However, this method is time-consuming. If one operator is overseeing multiple single-crystal furnaces simultaneously undergoing refeeding, delays can easily occur, impacting production efficiency. Increasing the number of operators increases labor costs. Furthermore, some existing methods involve modifying and replacing relevant components of the quartz feeding cylinder. These methods are complex to install and operate, requiring modifications to all quartz feeding cylinders, resulting in high costs and potentially affecting the feeding process. Summary of the Invention

[0004] The purpose of this application is to provide a supportless internal re-feeding connection device and a single crystal furnace, which avoids the charging cylinder from colliding with the inner wall of the auxiliary chamber furnace cylinder during the lifting process, ensures that the charging cylinder can smoothly enter and exit the auxiliary chamber furnace cylinder, and does not require modification of the charging cylinder, thereby improving efficiency and reducing costs.

[0005] To solve at least one of the above-mentioned technical problems, this application adopts the following technical solution:

[0006] According to a first aspect of this application, a non-stabilized internal refill connection device is provided for a single crystal furnace, comprising: a connecting seat for connecting to the counterweight of the single crystal furnace, wherein the outer diameter of the connecting seat is smaller than the inner diameter of the auxiliary chamber furnace cylinder of the single crystal furnace; a connecting mechanism disposed at the bottom of the connecting seat for connecting to the charging cylinder of the single crystal furnace; and a guiding mechanism disposed on the connecting seat, wherein the outer contour is adapted to the inner wall of the auxiliary chamber furnace cylinder.

[0007] In one possible implementation of the first aspect above, the guiding mechanism includes: a plurality of guide members arranged circumferentially along the connecting seat and connected to the connecting seat; each guide member includes a first guide portion and a second guide portion from top to bottom on its outer side, the vertical distance from the first guide portion to the central axis of the connecting seat decreases from bottom to top, and the vertical distance from the second guide portion to the central axis of the connecting seat is greater than the outer diameter of the feeding cylinder and less than the inner diameter of the auxiliary chamber furnace cylinder.

[0008] In one possible implementation of the first aspect described above, each guide member further includes a third guide portion connected below the second guide portion on its outer side, the vertical distance from the third guide portion to the central axis of the connecting seat increasing from bottom to top.

[0009] In one possible implementation of the first aspect described above, each guide member has a connecting part at its top that connects to the bottom of the connecting seat. The guide member is an arc-shaped plate structure, and each guide member is integrally formed. The connecting mechanism fixes the guide mechanism to the bottom of the connecting seat.

[0010] In one possible implementation of the first aspect mentioned above, a protective block is provided on the outer side of the guide member, the protective block being an arc shape matching the guide member; and a reinforcing rib is provided on the inner side of the guide member.

[0011] In one possible implementation of the first aspect described above, the connecting seat is provided with a receiving cavity extending vertically and open on one side, the receiving cavity being used to place the counterweight, the top of the connecting seat is provided with a first through hole extending vertically and communicating with the receiving cavity, the diameter of the first through hole being smaller than the outer diameter of the counterweight, the first through hole being used for the passage of a first connecting member for connecting the counterweight and the lifting device; a first notch extending vertically is provided on one side of the top of the connecting seat, the first notch communicating with the first through hole and the receiving cavity respectively, and being used for the first connecting member to enter and exit the first through hole.

[0012] In one possible implementation of the first aspect above, the self-supporting internal re-attachment connection device of this application further includes: an anti-detachment cover, which is disposed on the top of the connection seat. The anti-detachment cover is provided with a second through hole that penetrates vertically and corresponds to the first through hole. A second notch is provided on one side of the anti-detachment cover that penetrates vertically and communicates with the second through hole. The second notch is used for the first connector to enter and exit the second through hole, and corresponds to or is offset from the first notch along the circumference of the connection seat.

[0013] In one possible implementation of the first aspect described above, the bottom of the anti-detachment cover is provided with a groove for insertion into the top of the connecting seat. The anti-detachment cover can rotate circumferentially relative to the connecting seat so that the second notch corresponds to or is offset from the first notch along the circumference of the connecting seat. The groove is coaxial with the second through hole, the outer diameter of the top of the connecting seat is larger than the diameter of the second through hole, and the first through hole is coaxial with the receiving cavity and the second through hole respectively.

[0014] In one possible implementation of the first aspect above, the connecting mechanism includes: a lifting ring disposed at the bottom of the connecting seat for connecting to the feeding cylinder via a second connecting member; the lifting ring includes a ring body and a screw rod, the screw rod being disposed vertically and screwed to the connecting seat, the ring body being disposed at the bottom of the screw rod and located below the connecting seat, the ring body being used for connecting to the second connecting member, a locking nut being disposed on the screw rod, and a threaded hole being disposed at the bottom of the connecting seat extending vertically and screwed to the screw rod; the threaded hole communicating with the receiving cavity.

[0015] According to a second aspect of this application, a single crystal furnace is provided, including the unsupported internal re-injection connection device described in the first aspect.

[0016] The above-mentioned technical solution of this application has at least one of the following beneficial effects:

[0017] The self-supporting internal refill connection device according to this application includes a connecting seat, a connecting mechanism, and a guiding mechanism. The counterweight of the single crystal furnace is connected to the connecting seat, and the counterweight is connected to the lifting device of the single crystal furnace through a first connecting member. The connecting mechanism, located at the bottom of the connecting seat, is connected to the feeding cylinder of the single crystal furnace. The guiding mechanism is located on the connecting seat. During the lifting process where the lifting device drives the feeding cylinder to rise and fall via the self-supporting internal refill connection device, the outer contour of the guiding mechanism matches the inner wall of the auxiliary chamber furnace cylinder, thereby guiding the rise and fall of the feeding cylinder and preventing it from swaying significantly and colliding with the inner wall of the auxiliary chamber furnace cylinder. This ensures stable rise and fall of the feeding cylinder and smooth entry and exit from the auxiliary chamber furnace cylinder. Therefore, the self-supporting internal refill connection device of this application can guide the feeding cylinder during its rise and fall, eliminating the need for manual support and preventing collisions between the feeding cylinder and the inner wall of the auxiliary chamber furnace cylinder. This ensures smooth entry and exit of the feeding cylinder. Furthermore, it has a simple structure, is easy to operate, requires no modification to the feeding cylinder, improves efficiency, and reduces costs.

[0018] In addition, unless otherwise specified in the technical solution of this application, the technical solution can be implemented by conventional means in the field. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the support-free internal re-attachment connection device of this application;

[0021] Figure 2 This is a front view of an embodiment of the self-supporting internal re-attachment connection device of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a support-free internal re-feeding connection device applied to a single crystal furnace according to one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a connector according to one embodiment of this application;

[0024] Figure 5This is a schematic diagram of the connection mechanism according to one embodiment of this application;

[0025] Figure 6 This is a three-dimensional structural diagram of a guide mechanism according to one embodiment of this application;

[0026] Figure 7 This is a front view of a guide mechanism according to one embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the anti-slip cap structure according to one embodiment of this application.

[0028] Explanation of the labels in the attached drawings:

[0029] Connecting seat 100; receiving cavity 101; first through hole 102; first notch 103; threaded hole 104; weight-reducing through hole 105;

[0030] Connecting mechanism 200; lifting ring 210; ring body 211; screw 212; locking nut 213; second connecting piece 220;

[0031] Guide mechanism 300; guide component 310; first guide part 311; second guide part 312; third guide part 313; connecting part 314; protective block 320; reinforcing rib 330; third through hole 340;

[0032] Anti-detachment cap 400; second through hole 401; second notch 402; groove 403;

[0033] 500 hammer; 501 first connector;

[0034] Auxiliary chamber furnace tube 600; viewing window 601;

[0035] Feeding cylinder 700. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," "upper-level," "lower-level," "main," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral molding; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] See Figure 1 , Figure 2 , Figure 3 As shown, a supportless internal re-injection connection device according to an embodiment of this application is schematically displayed for a single crystal furnace. The supportless internal re-injection connection device of this application includes: a connection seat 100, a connection mechanism 200, and a guide mechanism 300.

[0040] The connecting seat 100 is used to connect with the counterweight 500 of the single crystal furnace. The outer diameter of the connecting seat 100 is smaller than the inner diameter of the auxiliary chamber furnace cylinder 600 of the single crystal furnace. The connecting mechanism 200 is located at the bottom of the connecting seat 100 and is used to connect with the charging cylinder 700 of the single crystal furnace. The guiding mechanism 300 is located on the connecting seat 100. The outer contour of the guiding mechanism 300 is adapted to the inner wall of the auxiliary chamber furnace cylinder 600 to guide the lifting and lowering of the charging cylinder 700. The counterweight 500 can be connected to the lifting device of the single crystal furnace through connecting parts such as tungsten wire ropes. The connecting mechanism 200 can also be connected to corresponding components of the charging cylinder 700 through connecting parts such as tungsten wire ropes. It should be noted that there needs to be a certain distance between the outer wall of the charging cylinder 700 and the inner wall of the auxiliary chamber furnace cylinder 600; the outer contour of the guide mechanism 300 is adapted to the inner wall of the auxiliary chamber furnace cylinder 600, that is, the gap between the outer contour of the guide mechanism 300 and the inner wall of the auxiliary chamber furnace cylinder 600 is relatively small or can slide relative to each other.

[0041] When the charging cylinder 700 needs to be lifted into the auxiliary chamber furnace 600, the lifting device drives the charging cylinder 700 to be lifted via the counterweight 500 and the non-steering internal re-feeding connection device. During the lifting process, the outer contour of the guide mechanism 300 is adapted to the inner wall of the auxiliary chamber furnace 600. The gap between the outer contour of the guide mechanism 300 and the inner wall of the auxiliary chamber furnace 600 is relatively small or relatively sliding, thereby reducing the swaying amplitude of the connecting seat 100 within the auxiliary chamber furnace 600, guiding the lifting of the charging cylinder 700, and preventing the charging cylinder 700 from swaying significantly and colliding with the inner wall of the auxiliary chamber furnace 600, ensuring that the charging cylinder 700 is stably lifted into the auxiliary chamber furnace 600. When it is necessary to release the charging cylinder 700 from the auxiliary chamber furnace 600, the principle is the same as above, and will not be described in detail here.

[0042] Therefore, the non-assisted internal re-feeding connection device of this application can adapt the outer contour of the guide mechanism 300 to the inner wall of the auxiliary chamber furnace 600 during the lifting and lowering process of the feeding cylinder 700, so that the feeding cylinder 700 does not need to be manually supported, thus avoiding collision between the feeding cylinder 700 and the inner wall of the auxiliary chamber furnace 600, ensuring that the feeding cylinder 700 can smoothly enter and exit the auxiliary chamber furnace 600. Moreover, the structure is simple, the operation is convenient and quick, and no modification to the feeding cylinder 700 is required, which improves efficiency and reduces costs.

[0043] In some embodiments, reference Figure 3 , Figure 6 , Figure 7 As shown, the guiding mechanism 300 includes a plurality of guide members 310, which are arranged circumferentially along the connecting seat 100 and connected to the connecting seat 100. Each guide member 310 includes a first guide portion 311 and a second guide portion 312 sequentially from top to bottom on its outer side, so as to... Figure 7 For reference, the vertical distance from the first guide part 311 to the central axis a of the connecting seat 100 decreases from bottom to top, and the vertical distance from the second guide part 312 to the central axis a of the connecting seat 100 is greater than the outer diameter of the feeding cylinder 700 and less than the inner diameter of the auxiliary chamber furnace cylinder 600.

[0044] When the guide mechanism 300 enters the auxiliary chamber furnace 600 upwards, the first guide portion 311 of each guide member 310 can guide the guide mechanism 300 to smoothly enter the auxiliary chamber furnace 600. After the guide mechanism 300 enters the auxiliary chamber furnace 600, the second guide portion 312 of each guide member 310 can cooperate with the inner wall of the auxiliary chamber furnace 600. The gap between the second guide portion 312 and the inner wall of the auxiliary chamber furnace 600 is relatively small, thereby reducing the swaying amplitude of the connecting seat 100 in the auxiliary chamber furnace 600 and ensuring stable lifting.

[0045] Optionally, refer to Figure 3 , Figure 6 , Figure 7As shown, each guide member 310 also includes a third guide portion 313 connected below the second guide portion 312 on its outer side, so as to... Figure 7 For reference, the vertical distance from the third guide portion 313 to the central axis a of the connecting seat 100 increases from bottom to top. That is, the outer side of each guide member 310 includes, from top to bottom, a first guide portion 311, a second guide portion 312, and a third guide portion 313. The guide member 310 can adopt an arc-shaped plate structure, where the second guide portion 312 is the intersection of the first guide portion 311 and the third guide portion 313. The vertical distance from the first guide portion 311 to the central axis a of the connecting seat 100 increases from top to second guide portion 312, and the vertical distance from the third guide portion 313 to the central axis a of the connecting seat 100 increases from bottom to second guide portion 312. Since a viewing window 601 is usually provided on the auxiliary chamber furnace tube 600, the viewing window 601 inside the auxiliary chamber furnace tube 600 will form a certain step. Therefore, when the guide mechanism 300 passes downward through the viewing window 601 in the auxiliary furnace cylinder 600, the third guide part 313 of each guide member 310 can guide it, preventing the guide member 310 from hitting the corresponding step and getting stuck, ensuring that the guide mechanism 300 passes smoothly through the viewing window 601, which is safer and more reliable and improves efficiency.

[0046] Optionally, refer to Figure 6 , Figure 7 As shown, each guide member 310 has a connecting portion 314 at its top that connects to the bottom of the connecting seat 100. Each guide member 310 can be integrally formed; for example, four guide members 310 can be integrally formed and evenly distributed along the circumference of the connecting seat 100, forming a structure similar to a guide claw disc. The connecting mechanism 200 fixes the guide mechanism 300 to the bottom of the connecting seat 100. For example, the bottom surface of the connecting seat 100 can be a plane, and the connecting portions 314 connect to form a flat plate structure. The flat plate structure has a third through hole 340 for the connecting mechanism 200 to pass through. Therefore, the structure is simple and stable, and operation is more convenient and faster.

[0047] Optionally, refer to Figure 6 , Figure 7 As shown, a protective block 320 is provided on the outer side of the guide member 310. The protective block 320 is arc-shaped and matches the guide member 310. The guide member 310 can be made of stainless steel, and the auxiliary chamber furnace tube 600 is made of high-strength, high-temperature resistant metal. The protective block 320 can be made of PTFE and can be installed on the outer side of the guide member 310 using bolts or other fasteners. Therefore, by providing the protective block 320 on the outer side of the guide member 310, direct contact between the metal guide member 310 and the inner wall of the auxiliary chamber furnace tube 600 is avoided, making it safer and more reliable. Alternatively, the guide member 310 and the protective block 320 can also be made of other suitable existing materials.

[0048] Optionally, refer to Figure 6 , Figure 7 As shown, a reinforcing rib 330 is provided on the inner side of the guide member 310. The reinforcing rib 330 can be made of the same material as the guide member 310, and the reinforcing rib 330 and the guide member 310 can be connected by welding, screws, or other means. This improves the structural strength of the guide mechanism 300, prevents the guide mechanism 300 from bending under stress, and ensures that the guide mechanism 300 provides more stable and reliable guidance.

[0049] In some embodiments, reference Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the connecting seat 100 has a vertically extending receiving cavity 101 with an opening on one side, which is used to hold the counterweight 500. The top of the connecting seat 100 has a first through hole 102 extending vertically and communicating with the receiving cavity 101. The diameter of the first through hole 102 is smaller than the outer diameter of the counterweight 500. The first through hole 102 allows the first connecting member 501, which connects the counterweight 500 to the lifting device, to pass through. A first notch 103 extending vertically is provided on one side of the top of the connecting seat 100. The first notch 103 communicates with both the first through hole 102 and the receiving cavity 101, and allows the first connecting member 501 to enter and exit the first through hole 102. The first connecting member 501 can be made of tungsten wire rope or other suitable existing connecting members. The connecting seat 100 can be made of stainless steel and can be approximately cylindrical with a smooth, burr-free surface, which not only prevents residue buildup during cleaning but also meets load-bearing requirements. This makes operation simpler and faster, ensuring that the connector 100 is suspended on the counterweight 500.

[0050] Optionally, refer to Figure 4 As shown, a weight-reducing through-hole 105 can also be provided on the side wall of the receiving cavity 101. There can be one, two, or more weight-reducing through-holes 105, and the size, shape, and arrangement of the weight-reducing through-holes 105 can be determined according to specific circumstances such as the size of the connecting seat 100. This reduces weight and the lifting load.

[0051] In some embodiments, reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8As shown, the self-supporting re-attachment connection device of this application also includes an anti-detachment cover 400, which is disposed on the top of the connecting seat 100. The anti-detachment cover 400 has a second through hole 401 that extends vertically and corresponds to the first through hole 102. One side of the anti-detachment cover 400 has a second notch 402 that extends vertically and communicates with the second through hole 401. The second notch 402 is used for the first connector 501 to enter and exit the second through hole 401, and corresponds to or is offset from the first notch 103 along the circumference of the connecting seat 100. The anti-detachment cover 400 can be made of PTFE material, making it lightweight and easy to operate. During use, the second notch 402 initially corresponds to the first notch 103. After the first connector 501 passes through the second notch 402 and the first notch 103 into the first through hole 102 and the second through hole 401, the position of the anti-detachment cover 400 is adjusted so that the first notch 103 and the second notch 402 are offset along the circumference of the connecting seat 100. Therefore, during use, the connector 100 is made safer and more reliable, preventing the first connector 501 from slipping out of the first through hole 102 and the second through hole 401 due to external force. Furthermore, the anti-detachment cover 400 can also be made of other suitable existing materials.

[0052] Optionally, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 The bottom of the anti-detachment cover 400 is provided with a groove 403 for insertion into the top of the connecting seat 100. The anti-detachment cover 400 can rotate circumferentially relative to the connecting seat 100 so that the second notch 402 corresponds to or is offset from the first notch 103 along the circumference of the connecting seat 100. The groove 403 is coaxial with the second through hole 401, and the outer diameter of the top of the connecting seat 100 is larger than the diameter of the second through hole 401. The first through hole 102 is coaxial with both the receiving cavity 101 and the second through hole 401. Thus, the top of the connecting seat 100 is inserted into the groove 403 of the anti-detachment cover 400, and the anti-detachment cover 400 can be placed on the top of the connecting seat 100 by its own weight. By rotating the anti-detachment cover 400, the first notch 103 can be aligned with or offset from the second notch 402, making operation more convenient and improving efficiency.

[0053] In some embodiments, reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the connecting mechanism 200 includes a lifting ring 210, which is disposed at the bottom of the connecting seat 100. The lifting ring 210 is used to connect to the feeding cylinder 700 via a second connecting member 220. The second connecting member 220 can be a tungsten wire rope, which connects the lifting ring 210 to a corresponding component at the top of the feeding cylinder 700. The lifting ring 210 includes a ring body 211 and a screw 212. The screw 212 is arranged vertically and screwed to the connecting seat 100. The ring body 211 is disposed at the bottom of the screw 212 and located below the connecting seat 100. The ring body 211 is used to connect to the second connecting member 220. A locking nut 213 is provided on the screw 212. The bottom of the connecting seat 100 is provided with a threaded hole 104 extending vertically and screwed to the screw 212. The threaded hole 104 communicates with the receiving cavity 101. The threaded hole 104 can be located at the bottom center of the connecting seat 100, and the upper end of the screw 212 can extend into the receiving cavity 101. Therefore, no modification to the feeding cylinder 700 is required, which facilitates the connection between the self-supporting internal refilling connecting device and the feeding cylinder 700, making the operation simpler. It also allows for adjustment of the distance between the ring 211 and the bottom of the connecting seat 100.

[0054] Optionally, refer to Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the top of the guide mechanism 300 may be provided with a third through hole 340 for the screw 212 to pass through. The screw 212 passes through the third through hole 340 and connects to the threaded hole 104 at the bottom of the connecting seat 100, and is locked by a locking nut 213. A washer may also be provided between the locking nut 213 and the third through hole 340, thereby fixing the guide mechanism 300 to the bottom of the connecting seat 100 through the connecting mechanism 200. The structure is simple, stable, and easy and quick to operate.

[0055] According to an embodiment of this application, a single crystal furnace is also provided, including the aforementioned unsupported internal refill connection device. The single crystal furnace of this application further includes a furnace body, a counterweight 500, a secondary chamber furnace cylinder 600, a charging cylinder 700, a lifting device, and other devices. The secondary chamber furnace cylinder 600 is located above the furnace body and can communicate with the furnace body. The charging cylinder 700 is located inside the single crystal furnace. The lifting device is located at the top of the secondary chamber furnace cylinder 600. A connecting seat 100 is connected to the counterweight 500. The counterweight 500 can be connected to the lifting device via a tungsten wire rope. A connecting mechanism 200 can be connected to the charging cylinder 700 via a tungsten wire rope. The lifting device can drive the charging cylinder 700 to move up and down within the furnace body and the secondary chamber furnace cylinder 600. The furnace body, counterweight 500, secondary chamber furnace cylinder 600, charging cylinder 700, and lifting device can all be existing corresponding devices, which will not be described in detail here.

[0056] Based on the various embodiments of this application described above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0057] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of this application. In this case, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.

Claims

1. A supportless internal re-attachment connection device, characterized in that, Used in single crystal furnaces, including: A connecting seat is used to connect to the counterweight of the single crystal furnace, and the outer diameter of the connecting seat is smaller than the inner diameter of the auxiliary chamber furnace cylinder of the single crystal furnace. A connecting mechanism is provided at the bottom of the connecting seat for connecting to the feeding cylinder of the single crystal furnace; A guiding mechanism is provided on the connecting seat, and its outer contour is adapted to the inner wall of the auxiliary chamber furnace cylinder.

2. The self-supporting internal re-attachment connection device according to claim 1, characterized in that, The guiding mechanism includes: Multiple guide members are arranged circumferentially along the connecting seat and connected to the connecting seat; Each of the guide members includes a first guide portion and a second guide portion from top to bottom on its outer side. The vertical distance from the first guide portion to the central axis of the connecting seat decreases from bottom to top. The vertical distance from the second guide portion to the central axis of the connecting seat is greater than the outer diameter of the feeding cylinder and less than the inner diameter of the auxiliary chamber furnace cylinder.

3. The self-supporting internal re-attachment connection device according to claim 2, characterized in that, Each of the guide members also includes a third guide portion connected below the second guide portion on its outer side, the vertical distance of the third guide portion to the central axis of the connecting seat increasing from bottom to top.

4. The self-supporting internal re-attachment connection device according to claim 3, characterized in that, Each guide member has a connecting part at its top that connects to the bottom of the connecting seat. The guide member has an arc-shaped plate structure, and each guide member is integrally formed. The connecting mechanism fixes the guide mechanism to the bottom of the connecting seat.

5. The self-supporting internal re-attachment connection device according to claim 4, characterized in that, A protective block is provided on the outer side of the guide member, and the protective block is an arc shape that matches the guide member; The guide member has reinforcing ribs on its inner side.

6. The self-supporting internal re-attachment connection device according to claim 1, characterized in that, The connecting seat is provided with a receiving cavity extending vertically and open on one side, the receiving cavity is used to place the weight, and the top of the connecting seat is provided with a first through hole extending vertically and communicating with the receiving cavity. The diameter of the first through hole is smaller than the outer diameter of the weight, and the first through hole is used for the first connecting member connecting the weight to the lifting device to pass through. The top side of the connector is provided with a first notch extending vertically. The first notch communicates with the first through hole and the receiving cavity, and is used for the first connector to enter and exit the first through hole.

7. The self-supporting internal re-attachment connection device according to claim 6, characterized in that, Also includes: An anti-detachment cover is provided on the top of the connector. The anti-detachment cover has a second through hole that extends vertically and corresponds to the first through hole. A second notch that extends vertically and communicates with the second through hole is provided on one side of the anti-detachment cover. The second notch is used for the first connector to enter and exit the second through hole, and is either corresponding to or offset from the first notch along the circumference of the connector.

8. The self-supporting internal re-attachment connection device according to claim 7, characterized in that, The bottom of the anti-detachment cover is provided with a groove for insertion into the top of the connecting seat. The anti-detachment cover can rotate circumferentially relative to the connecting seat so that the second notch corresponds to or is offset from the first notch along the circumference of the connecting seat. The groove is coaxial with the second through hole, the top outer diameter of the connecting seat is larger than the diameter of the second through hole, and the first through hole is coaxial with both the receiving cavity and the second through hole.

9. The self-supporting internal re-attachment connection device according to claim 6, characterized in that, The connecting mechanism includes: A lifting ring, located at the bottom of the connecting seat, is used to connect to the feeding cylinder via a second connecting member; The lifting ring includes a ring body and a screw rod. The screw rod is arranged vertically and screwed to the connecting seat. The ring body is located at the bottom of the screw rod and below the connecting seat. The ring body is used to connect with the second connecting member. A locking nut is provided on the screw rod. The bottom of the connecting seat is provided with a threaded hole that extends vertically and is screwed to the screw rod. The threaded hole is connected to the receiving cavity.

10. A single crystal furnace, characterized in that, Includes the self-supporting internal re-attachment connection device as described in any one of claims 1 to 9.

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