Maintenance device for a flow guide structure of a single crystal furnace

Abstract

The utility model relates to single crystal furnace assembly maintenance equipment's technical field especially relates to a kind of maintenance device of single crystal furnace flow guide structure, including support plate and swivel, support plate is opened and has let go of mouth, and the position of support plate corresponding let go of mouth below forms the let go of area of flow guide structure;Swivel is rotationally connected on support plate, and the upper surface of swivel forms the supporting part of flow guide structure;The inner ring of swivel and let go of mouth position correspond;When supporting part supports flow guide structure, flow guide structure can extend from the inner ring of swivel and let go of mouth to let go of area, it has beneficial effect when transporting and maintaining flow guide structure, it can be placed on swivel and supported by supporting part, due to the existence of swivel inner ring and let go of mouth, conical flow guide structure can smoothly extend to let go of area, operator can maintain, assemble and clean etc. operation to flow guide structure in let go of area, improve operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of single crystal furnace assembly and maintenance equipment, and in particular to a maintenance device for a single crystal furnace flow guiding structure. Background Technology

[0002] In existing technologies, the handling and maintenance of the flow guide structure in single crystal furnaces typically rely on traditional fixed or manually adjustable tooling equipment. This equipment often suffers from inconvenience, low efficiency, and poor adaptability to different flow guide structure specifications. Specifically, traditional tooling equipment lacks rotation capabilities, requiring frequent movement or repositioning of the entire flow guide structure when different parts need to be operated on, such as during sidewall cleaning or alignment of connecting flanges in specific locations. This increases operational complexity and time costs. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a maintenance device for the flow guiding structure of a single crystal furnace, which solves the technical problem that the traditional tooling equipment in the prior art does not have a rotation function, so that when different parts of the flow guiding structure need to be operated, the entire flow guiding structure must be moved or repositioned frequently, which increases the complexity of operation and time cost.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] In a first aspect, this utility model provides a maintenance device for a flow guiding structure of a single crystal furnace, including a support plate and a rotating ring. The support plate has a clearance opening, and a clearance area of ​​the flow guiding structure is formed at the position below the clearance opening. The rotating ring is axially rotatably connected to the support plate, and the upper surface of the rotating ring forms a support portion of the flow guiding structure. The inner ring of the rotating ring corresponds to the clearance opening. When the support portion supports the flow guiding structure, the flow guiding structure can extend from the inner ring of the rotating ring and the clearance opening to the clearance area.

[0008] In one technical solution of this utility model, a bracket is also included, with a tray fixedly connected to the bracket, and a clearance area is formed inside the bracket.

[0009] In one technical solution of this utility model, the vertical height of the bracket can be adjusted to a limit; the bracket includes a horizontally extending upper frame and a vertically extending support rod, the support rod is fixedly connected to the upper frame, and the height of the support rod can be adjusted to a limit.

[0010] In one technical solution of this utility model, a rotating component is also included, and the rotating ring is rotatably connected to the tray through the rotating component.

[0011] In one technical solution of this utility model, the rotating assembly includes a fixed ring, a wheel frame, and rollers. The fixed ring is fixedly connected to the support plate, and a first annular groove is formed on its upper surface. The rollers are rotatably connected to the wheel frame along the radial direction, and multiple rollers are distributed circumferentially on the wheel frame. A second annular groove is formed on the lower surface of the rotating ring. The radius of the wheel frame matches that of the first and second annular grooves. When the rotating ring is rotatably connected to the support plate, the wheel frame remains detached from the rotating ring and the fixed ring. The upper tangent surface of all rollers coincides with the top surface of the second annular groove, and the lower tangent surface of all rollers coincides with the bottom surface of the first annular groove.

[0012] In one technical solution of this utility model, the rotating assembly further includes an inner retaining ring and an outer retaining ring fixedly connected to the fixed ring. An installation ring groove is formed between the inner retaining ring and the outer retaining ring. The wheel frame is disposed in the installation ring groove, and the radial side walls of the wheel frame are clearance-fitted with the side walls of the inner retaining ring and the outer retaining ring.

[0013] In one technical solution of this utility model, a limiting protrusion is formed on the lower surface of the rotating ring, and the radial side walls of the limiting protrusion are clearance-fitted with the side walls of the inner and outer retaining rings.

[0014] In one technical solution of this utility model, a rotation drive component is fixedly connected to the bracket, and the rotation drive component is adapted to drive the rotating ring to rotate axially.

[0015] In one technical solution of this utility model, a cleaning device is also included. The cleaning device is fixedly connected to the bracket and includes a cleaning part. When the flow guiding structure rotates with the rotating ring, the cleaning part contacts the side wall of the flow guiding structure to achieve cleaning.

[0016] (III) Beneficial Effects

[0017] The beneficial effects of this utility model are as follows: The maintenance device for the single-crystal furnace flow guide structure allows the flow guide structure to be placed on a rotating ring and supported by a supporting part during transportation and maintenance. Due to the presence of the inner ring of the rotating ring and the clearance opening, the conical flow guide structure can smoothly extend into the clearance area. Operators can then perform maintenance, assembly, and cleaning operations on the flow guide structure within the clearance area, improving work efficiency. Furthermore, because the rotating ring can rotate, the flow guide structure can be rotated to the required angle position for easy assembly, or its continuous rotation can be used to improve cleaning efficiency during cleaning.

[0018] Once the flow guide structure is rotated to the required angle, it can be hoisted onto the single crystal furnace using lifting equipment, which facilitates the assembly process.

[0019] When the flow guide structure is placed on the swivel ring, its lower part can pass through the inner ring of the swivel ring and the clearance opening of the support plate, extending downwards to the clearance area, effectively supporting the overall center of gravity of the flow guide structure and providing space clearance. This layout not only ensures the stability of the flow guide structure during placement but also provides ample operating space in its lower area, facilitating operators to approach the flow guide structure from below for maintenance operations such as inspection, cleaning, fastening, or component replacement.

[0020] Furthermore, the swivel ring and the support plate are connected by an axial rotation method, allowing the swivel ring to rotate freely in the horizontal plane around its central axis. This design significantly improves operational flexibility and convenience. In actual use, operators do not need to frequently move or reposition the flow guide structure itself; they only need to manually or with the aid of an auxiliary drive mechanism to rotate the swivel ring, which will smoothly rotate the flow guide structure to any desired angle. For example, when cleaning the sidewalls, the flow guide structure can be continuously and slowly rotated, combined with fixed nozzles or manual brushing, to achieve uniform and efficient cleaning of the entire inner surface, avoiding blind spots. During assembly, when it is necessary to align and install connecting flanges or locating pins in a specific orientation, the optimal viewing angle and operating angle can be adjusted by rotation, greatly improving assembly accuracy and operational comfort.

[0021] Furthermore, this maintenance device features a simple, robust, and reliable overall structure, suitable for temporary support of the flow guide structure during transportation, storage, pre-assembly, and maintenance. After the flow guide structure has completed its relevant operations, it can be directly lifted from above using a lifting device. Because its bottom extends into the clearance zone, the center of gravity is stable and the force is evenly distributed during lifting, preventing swaying or tilting, thus ensuring the safety and efficiency of the lifting process. Overall, this device not only extends the service life of the flow guide structure and reduces the risk of deformation or damage due to improper placement, but also significantly optimizes on-site operations, reduces labor costs, and improves the maintenance and assembly efficiency of key components of the single crystal furnace, demonstrating good practical value and promising prospects for widespread application. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of the maintenance device for the single crystal furnace flow guiding structure of this utility model;

[0023] Figure 2 This is the second schematic diagram of the maintenance device for the single crystal furnace flow guiding structure of this utility model;

[0024] Figure 3 This is the third schematic diagram of the maintenance device for the single crystal furnace flow guiding structure of this utility model;

[0025] Figure 4 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0026] Figure 5 This utility model Figure 3 A magnified schematic diagram of the local structure at point B;

[0027] Figure 6 This utility model Figure 3 A magnified schematic diagram of the structure at point C.

[0028] [Explanation of Labels in the Attached Image]

[0029] 100: Flow guiding structure;

[0030] 1: Pallet; 1a: Clearance opening; 1b: Clearance area;

[0031] 2: Rotary ring; 2a: Support part; 2b: Second annular groove; 2c: Limiting protrusion;

[0032] 3: Bracket; 31: Upper frame; 32: Support rod;

[0033] 4: Rotating assembly;

[0034] 41: Fixed ring; 41a: First annular groove;

[0035] 42: Wheel frame; 43: Roller; 44: Inner retaining ring; 45: Outer retaining ring;

[0036] 5: Rotation drive component. Detailed Implementation

[0037] To better explain and facilitate understanding of this utility model, the following description is provided in conjunction with the appendix. Figures 1-6 This utility model will be described in detail through specific embodiments. In this document, directional terms such as "upper" and "lower" are used in conjunction with other directional terms. Figure 1 The orientation is used as a reference.

[0038] Example 1:

[0039] Reference Figures 1-6 This utility model provides a maintenance device for a single crystal furnace flow guiding structure, including a support plate 1 and a rotating ring 2. The support plate 1 has a clearance opening 1a, and the position below the clearance opening 1a on the support plate 1 forms a clearance area 1b of the flow guiding structure 100. The rotating ring 2 is axially rotatably connected to the support plate 1, and the upper surface of the rotating ring 2 forms a support portion 2a of the flow guiding structure 100. The inner ring of the rotating ring 2 corresponds to the clearance opening 1a. When the support portion 2a supports the flow guiding structure 100, the flow guiding structure 100 can extend from the inner ring of the rotating ring 2 and the clearance opening 1a to the clearance area 1b.

[0040] In this embodiment, when transporting and maintaining the flow guiding structure 100, it can be placed on the rotating ring 2 and supported by the supporting part 2a. Due to the presence of the inner ring of the rotating ring 2 and the relief opening 1a, the conical flow guiding structure 100 can smoothly extend to the relief area 1b. Operators can then perform maintenance, assembly, and cleaning operations on the flow guiding structure 100 in the relief area 1b, improving work efficiency. Furthermore, since the rotating ring 2 can rotate, the flow guiding structure 100 can be rotated to the required angle position for easy assembly, or it can be continuously rotated during cleaning to improve cleaning efficiency.

[0041] Once the flow guide structure 100 is rotated to the required angle, it can be hoisted onto the single crystal furnace using lifting tools, etc., to facilitate the assembly work.

[0042] Specifically, when the flow guide structure 100 is placed on the rotating ring 2, its lower part can pass through the inner ring of the rotating ring 2 and the clearance opening 1a of the support plate 1, extending downward to the clearance area 1b, thereby effectively supporting the overall center of gravity of the flow guide structure 100 and providing space clearance. This layout not only ensures the stability of the flow guide structure 100 during placement but also provides ample operating space in its lower area, facilitating operators to approach the flow guide structure 100 from below for maintenance operations such as inspection, cleaning, fastening, or component replacement.

[0043] Furthermore, the rotating ring 2 and the support plate 1 are connected by an axial rotation method, allowing the rotating ring 2 to rotate freely in the horizontal plane around its central axis. This design significantly improves the flexibility and convenience of operation. In actual use, operators do not need to frequently move or reposition the flow guide structure 100 itself; they only need to manually or with the help of an auxiliary drive mechanism to rotate the rotating ring 2, which will drive the flow guide structure 100 to rotate smoothly to any desired angle position. For example, when cleaning the side wall, the flow guide structure 100 can be continuously and slowly rotated, combined with a fixed nozzle or manual brushing, to achieve uniform and efficient cleaning of the entire inner surface, avoiding cleaning blind spots. During assembly, when it is necessary to align and install connecting flanges or positioning pins in a specific position, the optimal viewing angle and operating angle can be adjusted by rotation, greatly improving assembly accuracy and work comfort.

[0044] Furthermore, the maintenance device features a simple, robust, and reliable overall structure, suitable for temporary support of the flow guide structure 100 during transportation, storage, pre-assembly, and maintenance. After the flow guide structure 100 has completed its relevant operations, it can be directly lifted from above using a lifting device. Because its bottom extends into the clearance zone 1b, the center of gravity is stable and the force is evenly distributed during lifting, preventing swaying or tilting, thus ensuring the safety and efficiency of the lifting process. Overall, this device not only extends the service life of the flow guide structure 100 and reduces the risk of deformation or damage due to improper placement, but also significantly optimizes on-site operations, reduces labor costs, and improves the maintenance and assembly efficiency of key components of the single crystal furnace, demonstrating good practical value and promising prospects for widespread application.

[0045] Example 2:

[0046] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0047] The maintenance device also includes a bracket 3, with a support plate 1 fixedly connected to the bracket 3, and a clearance area 1b formed within the bracket 3. Specifically, the bracket 3 can be a cuboid frame that encloses the clearance area 1b. Casters are provided at the bottom of the bracket 3 to facilitate movement of the maintenance device.

[0048] In this embodiment, the maintenance device also includes a cuboid frame 3, which is welded or assembled from profiles. The support plate 1 is firmly fixed to the top frame of the support 3 by bolts or welding, forming a stable hierarchical structure. The overall outline of the support 3 is cuboid, and the space enclosed inside corresponds to the position of the clearance opening 1a on the support plate 1, together forming a through and well-sealed clearance area 1b. This space enclosed by the support 3 not only provides sufficient accommodation area for the lower extension of the flow guiding structure 100, but also enhances the mechanical properties of the overall structure, enabling the device to maintain sufficient rigidity and torsional resistance when bearing the heavy flow guiding structure 100, effectively preventing deformation caused by uneven local stress.

[0049] Furthermore, multiple swivel casters are installed at the bottom of the bracket 3. These casters have a locking function, which not only allows the entire maintenance device to move flexibly between workshops, repair platforms, or assembly stations, but also securely fixes the device during operation through the caster locking mechanism to prevent accidental slippage. This design significantly improves the ease of use of the device, so that the transfer of the guide structure 100 between different processes does not rely on additional handling equipment. Operators can easily push the device to the vicinity of the cleaning area, testing table, or single crystal furnace installation position, achieving an efficient operation mode of "use and go, stop when positioned". Especially in production environments with limited space or complex processes, the mobile structure with swivel casters greatly enhances the adaptability and mobility of the tooling.

[0050] When the flow guide structure 100 is placed on the support portion 2a of the rotating ring 2 and extends through the relief opening 1a into the relief area 1b enclosed by the bracket 3, its axial length is fully supported, and its center of gravity is stably located inside the device. Combined with the directional movement capability of the casters, the entire system achieves integrated functions of load bearing, rotation, positioning, and transportation. Maintenance personnel can freely approach the surface of the flow guide structure 100 from all sides and bottom of the bracket 3 while it is stationary or slowly rotating, to conduct comprehensive inspection and handling, thus improving the maintenance efficiency of the flow guide structure 100.

[0051] Example 3:

[0052] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0053] The vertical height of bracket 3 can be adjusted to a limit.

[0054] The bracket 3 includes a horizontally extending upper frame 31 and a vertically extending support rod 32. The support rod 32 is fixedly connected to the upper frame 31, and the height of the support rod 32 can be adjusted to a certain limit.

[0055] In this embodiment, the vertical height of the bracket 3 can be adjusted to a limited position, allowing the entire maintenance device to be adaptively adjusted according to the height requirements of different workstations or the operating habits of operators in actual use scenarios, thereby improving ergonomic adaptability and on-site operation convenience. Specifically, the bracket 3 includes a horizontally extending upper frame 31 and multiple vertically arranged support rods 32. The upper frame 31 serves as the mounting base for the tray 1, possessing sufficient structural rigidity to bear the weight of the guide structure 100 and maintain horizontal stability. The multiple support rods 32 are respectively fixedly connected to the lower part of the upper frame 31, arranged along its circumference or at its four corners, forming the main load-bearing support leg structure. The support rods 32 and the upper frame 31 are connected by an adjustable method, such as a threaded sleeve, a telescopic sleeve with pin hole limit, or a sliding fit structure with scale markings, to achieve segmented or continuous height adjustment.

[0056] During adjustment, the height variation range of the support rods 32 is equipped with clearly defined upper and lower limit structures, such as limit nuts, stop pins, and mechanical blocks, to prevent structural instability or connection failure due to excessive adjustment, ensuring sufficient safety margin under load. By adjusting the height of each support rod 32, the guide structure 100 can be adjusted to an installation height that matches the docking equipment, reducing vertical displacement distance and angular deviation during hoisting, and improving assembly efficiency and docking accuracy.

[0057] In summary, by setting up a support rod 32 structure with adjustable height and limit protection, this maintenance device not only enhances its adaptability to complex working conditions, but also further optimizes the transfer and docking process of the flow guiding structure 100 between different height positions, achieving an organic unity of mobility, stability and human-machine coordination, and providing safer, more flexible and reliable technical support for the efficient maintenance and precise installation of key components of the single crystal furnace.

[0058] Example 4:

[0059] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0060] The maintenance device also includes a rotating assembly 4, through which the rotating ring 2 is rotatably connected to the pallet 1. The rotating assembly 4 includes a fixed ring 41, a wheel frame 42, and rollers 43. The fixed ring 41 is fixedly connected to the pallet 1, and a first annular groove 41a is formed on its upper surface. The rollers 43 are rotatably connected to the wheel frame 42 along the radial direction, and multiple rollers 43 are distributed circumferentially on the wheel frame 42. A second annular groove 2b is formed on the lower surface of the rotating ring 2. The radius of the wheel frame 42 matches that of the first annular groove 41a and the second annular groove 2b. When the rotating ring 2 is rotatably connected to the pallet 1, the wheel frame 42 remains detached from the rotating ring 2 and the fixed ring 41. The upper tangent surface of all rollers 43 coincides with the top surface of the second annular groove 2b, and the lower tangent surface of all rollers 43 coincides with the bottom surface of the first annular groove 41a.

[0061] In this embodiment, the maintenance device is further equipped with a specially designed rotating assembly 4 to achieve a stable, low-friction, and high-load-bearing rotating connection between the rotating ring 2 and the support plate 1. The rotating assembly 4 includes a fixed ring 41, a wheel frame 42, and multiple rollers 43, forming a ring-shaped guide rail rotating structure based on the rolling support principle.

[0062] The fixing ring 41 is firmly connected to the lower part of the support plate 1 or around the relief opening 1a by bolts or welding. The upper surface of the ring 41 is machined with a first ring groove 41a, which has a certain width and depth to accommodate and guide the running trajectory of the roller 43, while providing radial and axial limiting support for the entire rotating system.

[0063] The wheel frame 42, serving as the mounting carrier for the rollers 43, has a ring-shaped structure. Its geometric radius matches the first annular groove 41a on the fixed ring 41 and the second annular groove 2b on the lower surface of the rotating ring 2, ensuring that all components remain concentrically aligned after assembly. Multiple rollers 43 are evenly distributed circumferentially along the wheel frame 42 and are rotatably connected to the wheel frame 42 in the radial direction via pins or bearings, allowing each roller 43 to rotate independently and freely.

[0064] When the rotating ring 2 is installed on the support plate 1 and forms a complete rotating connection, the wheel frame 42 is placed between the fixed ring 41 and the rotating ring 2. At this time, the upper and lower positions of the rollers 43 are precisely designed: the upper tangent of all rollers 43 is in contact with and coincides with the top surface of the second ring groove 2b on the lower surface of the rotating ring 2, while the lower tangent of all rollers 43 is in contact with and coincides with the bottom surface of the first ring groove 41a on the fixed ring 41, thereby forming a clamping rolling structure with upper and lower double-layer support surfaces.

[0065] It is worth noting that, under normal operating conditions, the wheel frame 42 does not directly and rigidly contact the fixed ring 41 or the rotating ring 2. Instead, the weight of the flow guiding structure 100 carried by the rotating ring 2 is evenly transferred to the fixed ring 41, and then to the support plate 1 and the bracket 3, through the roller 43 as an intermediate force transmission element. This design allows the rotating ring 2 to rotate smoothly around the central axis when driven by external forces such as manual pushing or auxiliary motor driving, while the roller 43 rolls synchronously between the first ring groove 41a and the second ring groove 2b, effectively reducing rotational resistance and avoiding problems such as jamming, wear, or difficult operation caused by traditional sliding friction.

[0066] The structural layout of the rotating component 4 also features excellent self-centering and load distribution capabilities. Due to the circumferentially distributed multiple rollers 43, the weight of the guide structure 100 is dispersed across multiple contact points, significantly improving the system's load-bearing capacity and operational stability, making it particularly suitable for heavy and long conical guide structures 100. Simultaneously, the design of the upper and lower double-groove clamping rollers 43 restricts the axial and radial movement of the rotating ring 2, preventing it from swaying or sinking during rotation, thus ensuring safety and accuracy during operation.

[0067] Furthermore, the rotating assembly 4 requires no complex bearings or lubrication systems, featuring a simple structure and convenient maintenance. The rollers 43 can be made of wear-resistant materials such as nylon, polyurethane, or hardened steel, providing sufficient strength and wear resistance while reducing the risk of scratching metal surfaces. This makes it particularly suitable for use in cleanrooms or environments with high surface protection requirements. When cleaning the inner wall of the guide structure 100 or performing assembly operations, operators can easily push the rotating ring 2 to rotate it at a uniform speed, achieving 360-degree operation without blind spots. Before hoisting, it can also be rotated to the optimal lifting position for easy docking with the single crystal furnace.

[0068] In summary, by setting up the rotating assembly 4, which consists of a fixed ring 41, a wheel frame 42, and a roller 43, not only is a smooth, low-resistance, and high-load-bearing rotational connection of the rotating ring 2 relative to the support plate 1 achieved, but the wear and inconvenience caused by direct friction are also avoided, thus improving the overall durability and user experience of the device.

[0069] Example 5:

[0070] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0071] The rotating assembly 4 also includes an inner retaining ring 44 and an outer retaining ring 45 fixedly connected to the fixed ring 41. An installation ring groove is formed between the inner retaining ring 44 and the outer retaining ring 45. The wheel frame 42 is disposed in the installation ring groove, and the radial side walls of the wheel frame 42 are clearance-fitted with the opposite side walls of the inner retaining ring 44 and the outer retaining ring 45.

[0072] In this embodiment, based on the aforementioned rotating assembly 4, an inner retaining ring 44 and an outer retaining ring 45 are further added. Both are fixedly connected to the top of the fixed ring 41 by welding or screws, and together form an annular mounting groove along the circumference. This mounting groove is located above the fixed ring 41, and its axial position is connected to the first annular groove 41a, providing a precise mounting and positioning space for the wheel frame 42. The wheel frame 42 is entirely embedded in the mounting groove, and its radial inner and outer side walls maintain a clearance fit with the side walls of the inner retaining ring 44 and the outer retaining ring 45 respectively, leaving a small and uniform gap. This allows the wheel frame 42 the operating space required for free rotation in the circumferential direction, while effectively limiting its offset or sway in the radial direction, thereby significantly improving the overall guiding accuracy and operational stability of the rotating assembly 4. The inner retaining ring 44 and the outer retaining ring 45, as limiting and guiding structures, jointly constrain the lateral displacement of the wheel frame 42, preventing it from becoming eccentric, tilted, or stuck due to uneven force or external disturbances during load-bearing. Especially when the guide structure 100 is heavy or there is a slight impact during rotation, the clearance fit sidewall can absorb some of the radial stress, avoid excessive local contact pressure between the roller 43 and the annular groove, and thus extend the service life of each component.

[0073] Meanwhile, since the wheel frame 42 is stably housed within the mounting ring groove formed by the inner retaining ring 44 and the outer retaining ring 45, its position is reliably positioned axially and radially, ensuring that all rollers 43 are always in the correct working position between the first ring groove 41a and the second ring groove 2b. This positioning mechanism allows the rollers 43 to continuously and evenly bear the load from the rotating ring 2 and smoothly transmit the force to the fixed ring 41, avoiding force imbalance caused by the displacement of the wheel frame 42 or overload damage to individual rollers 43.

[0074] Example 6:

[0075] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0076] A limiting protrusion ring 2c is formed on the lower surface of the rotating ring 2. The radial side walls of the limiting protrusion ring 2c are clearance-fitted with the side walls of the inner retaining ring 44 and the outer retaining ring 45.

[0077] In this embodiment, a limiting protrusion 2c is further provided on the lower surface of the rotating ring 2. The limiting protrusion 2c extends circumferentially along the rotating ring 2, forming a protruding annular structure. Its radial position corresponds to the inner retaining ring 44 and the outer retaining ring 45 on the fixed ring 41. When the rotating ring 2 is assembled to the support plate 1 and forms a complete rotating system with other components, the radial side walls of the limiting protrusion 2c maintain a clearance fit with the opposite side walls of the inner retaining ring 44 and the outer retaining ring 45, respectively. This design, based on the original wheel frame 42 limiting, further increases the radial constraint on the rotating ring 2 itself, forming a dual guiding and limiting mechanism, further improving the operating accuracy and stability of the entire rotating system.

[0078] Specifically, roller 43 supports the rotating ring 2 between the first annular groove 41a and the second annular groove 2b, bearing its axial load and achieving low-friction rotation. The clearance fit between the limiting protrusion 2c and the inner and outer retaining rings 45 primarily serves a radial positioning function, preventing the rotating ring 2 from lateral movement or swaying during rotation due to eccentricity, vibration, or external interference. The clearance between the limiting protrusion 2c and the inner and outer retaining rings 45 is a uniformly reserved small gap, ensuring that the rotating ring 2 can rotate freely without frictional resistance or jamming due to excessive tightness, and also allowing for rapid transmission of constraint reaction force through contact when subjected to lateral force, preventing system instability. This clearance also accommodates certain manufacturing tolerances and assembly errors, improving the interchangeability of tooling and assembly efficiency.

[0079] The wheel frame 42 is located in the middle layer and is constrained by the inner and outer retaining rings 45 to ensure that the roller 43 is always in the correct position. The swivel ring 2 is located in the upper layer and is guided by the inner and outer retaining rings 45 through the limiting protrusion 2c to ensure the concentricity of its rotation trajectory. The two-level limiting works together to ensure that the entire rotating assembly 4 can maintain good dynamic stability under heavy loads, frequent starts and stops, or manual pushing conditions.

[0080] Meanwhile, the presence of the limiting protrusion 2c also enhances the structural rigidity of the rotating ring 2. Especially when supporting the large flow guiding structure 100, it can reduce the risk of deformation of the rotating ring 2 due to local stress and extend its service life. All contact surfaces can be surface hardened or polished to further reduce wear and improve durability.

[0081] Example 7:

[0082] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0083] The maintenance device also includes a rotation drive 5 fixedly connected to the bracket 3, which is adapted to drive the rotating ring 2 to rotate axially. Specifically, the rotation drive 5 includes a motor, a reducer connected to the motor, and a friction wheel disposed at the output end of the reducer. The friction wheel makes frictional contact with the outer edge of the rotating ring 2 to drive the rotating ring 2 to rotate when the motor is working.

[0084] In this embodiment, the maintenance device further integrates a rotation drive component 5 to achieve active rotation of the rotating ring 2, thereby improving the automation level and continuity of operation. The motor, as the power source, can be a servo motor. A reducer is connected to the motor's output shaft to reduce the speed and increase the output torque, ensuring smooth start-up and uniform operation even when bearing a heavy flow guide structure 100.

[0085] A friction wheel is installed at the output end of the reducer. This friction wheel is typically made of a material with a high coefficient of friction, wear resistance, and a certain degree of elasticity, such as polyurethane or a rubber-coated metal core structure, to enhance the friction between it and the rotating ring 2 and reduce the risk of slippage. The friction wheel is precisely positioned so that its outer edge is in stable contact with the outer circumferential surface of the rotating ring 2. The contact point is located on the side wall or lower outer edge of the rotating ring 2, ensuring a reasonable power transmission path and avoiding excessive overturning torque.

[0086] When the motor is powered on, the power is amplified by the reducer and transmitted to the friction wheel. The friction wheel rotates accordingly and transmits torque to the rotating ring 2 through frictional contact with the outer edge of the rotating ring 2, thereby driving it to rotate axially around the central axis. Since the rotating ring 2 achieves low-friction support through the aforementioned rotating component 4, the required driving torque is relatively small. The friction wheel transmission method can meet the usage requirements, and the structure is simple and easy to maintain. It does not require complex gear meshing and alignment, making installation and debugging more convenient.

[0087] This drive method is particularly suitable for work scenarios requiring continuous, uniform rotation. For example, when cleaning the inner wall of the flow guide structure 100, starting the motor causes the friction wheel to drive the rotating ring 2 to rotate slowly. The operator can fix the handheld cleaning tool or set up an automatic spraying device. As the flow guide structure 100 rotates at a uniform speed, the cleaning medium or brush head can evenly cover the entire inner surface, avoiding omissions or repeated treatments, significantly improving cleaning quality and efficiency. When performing processes such as visual inspection, weld flaw detection, or coating spraying, the controllable rotation speed can ensure that the detection probe or spray gun maintains a constant relative motion with the workpiece surface, improving process consistency and result reliability.

[0088] Furthermore, the friction wheel and the rotating ring 2 utilize a surface-contact flexible transmission system, providing a certain degree of overload slippage protection. When encountering abnormal resistance during rotation, such as obstruction by foreign objects or structural deformation, the friction wheel can slip slightly, preventing damage to the motor or transmission components due to overload and improving the system's safety and fault tolerance. Simultaneously, the elastic material of the friction wheel effectively absorbs some vibrations, making the rotation process smoother and reducing impact on the guide structure 100.

[0089] In practical use, the rotary drive unit 5 can be equipped with a control switch or speed regulation module to realize functions such as forward and reverse rotation switching, start and stop control, speed regulation, and timed operation. Operators can flexibly adjust the operating parameters according to the needs of different processes. For example, inching mode can be used for precise positioning, while continuous low-speed operation can be used for large-area processing, which greatly improves the adaptability and ease of operation of the device.

[0090] In summary, the rotation drive component 5 enables the smooth, controllable, and low-maintenance rotation of the rotating ring 2, which not only significantly reduces the intensity of manual operation, but also provides strong technical support for the efficient maintenance and precision assembly of the flow guide structure 100, further enhancing the functional integrity and engineering practicality of the entire maintenance device.

[0091] Example 8:

[0092] Reference Figures 1-6 In addition to possessing all the technical solutions of the above embodiments, the embodiments of this utility model further possess the following technical solutions:

[0093] The maintenance device also includes a cleaning device, which is fixedly connected to the bracket 3. The cleaning device includes a cleaning part. When the flow guiding structure 100 rotates with the rotating ring 2, the cleaning part contacts the side wall of the flow guiding structure 100 to achieve cleaning.

[0094] In this embodiment, the maintenance device further integrates a cleaning device to achieve automated or semi-automated cleaning of the flow guide structure 100 during rotation, significantly improving maintenance efficiency and work quality. The cleaning device is fixedly connected within the clearance area 1b enclosed by the bracket 3, and its position corresponds to the lower outer wall or inner wall extension of the flow guide structure 100, ensuring that the cleaning device can accurately act on the surface to be cleaned when the flow guide structure 100 is supported by the rotating ring 2 and extends downward into the clearance area 1b. The cleaning device includes one or more cleaning parts, which can take the form of flexible bristles, sponge rollers, scrapers, absorbent materials, or cleaning heads with spraying functions, etc., specifically selected according to the type of contaminants on the surface of the flow guide structure 100, such as dust, oxides, oil stains, etc.

[0095] When the rotating ring 2 rotates axially under the drive of the rotating drive 5, the guide structure 100 supporting it rotates synchronously, extending downwards to the side wall of the clearance area 1b and continuously passing through the working area of ​​the cleaning part. At this time, the cleaning part maintains slight contact or close proximity with the outer or inner wall edge of the guide structure 100, completing the wiping, sweeping, or scraping off of contaminants in relative motion. For example, if the cleaning part is a ring brush or a radially arranged brush bundle, it can continuously clean the outer surface of the guide structure 100 in a circumferential manner during its rotation; if it is a retractable inner wall cleaning head, it can be inserted into the bottom opening of the guide structure 100 to perform targeted cleaning of the lower edge of its inner wall.

[0096] This design fully utilizes the rotation function of the rotating ring 2, transforming the cleaning operation, which originally required manual wiping or repeated angle adjustments, into a continuous, uniform, and fully covered dynamic process. Operators only need to activate the rotation drive 5 to achieve efficient cleaning of the entire circumferential surface of the guide structure 100 without frequent movement or manual intervention. It is especially suitable for large conical guide structures 100 that are tall, have rough surfaces, or are prone to dust accumulation.

[0097] Furthermore, the cleaning device can be further integrated with a liquid supply system, such as by installing micro-nozzles in the cleaning section and connecting them to external cleaning fluid pipelines. During the cleaning process, deionized water, alcohol, or other specialized cleaning agents can be sprayed simultaneously, achieving an integrated "spray-wipe" operation and enhancing the cleaning ability. After cleaning, the guide structure can be allowed to air dry naturally by idling or by using an air blowing device to accelerate drying, avoiding residual droplets that could cause corrosion or contamination.

[0098] The cleaning device itself is fixed inside the clearance area 1b, such as on the bracket 3. Its installation position is adjustable; for example, the distance between the cleaning section and the flow guiding structure 100 can be finely adjusted via a slide rail or telescopic arm to accommodate flow guiding structures 100 of different diameters, improving the device's versatility. Simultaneously, the cleaning section adopts a modular design, facilitating disassembly, replacement, cleaning, and maintenance, ensuring hygiene and effectiveness for long-term use.

[0099] In summary, by installing a cleaning device within the clearance zone 1b and ensuring that its cleaning part contacts the sidewall of the flow guide structure 100 as it rotates with the rotating ring 2, the cleaning operation is mechanized and streamlined. This not only significantly reduces the time and labor intensity of manual cleaning but also improves the uniformity, thoroughness, and repeatability of cleaning. It effectively prevents residual impurities from affecting the vacuum level or thermal stability of the single crystal furnace, thereby ensuring the purity and reliability of the crystal growth process. This demonstrates the significant progress of this maintenance device in terms of functional integration and intelligent maintenance.

[0100] It can be understood that, except for conflicting parts, the above embodiments 1-8 can be freely combined to form other embodiments of this utility model.

[0101] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0102] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0103] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0104] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0105] It will be readily understood by those skilled in the art that the scope of protection of this utility model is obviously not limited to these specific embodiments. Without departing from the principles of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this utility model.

Claims

1. A maintenance device for a single crystal furnace flow guiding structure, characterized in that: Includes a tray (1) and a rotating ring (2). The tray (1) has a clearance opening (1a). The tray (1) forms a clearance area (1b) of the flow guiding structure (100) at a position below the clearance opening (1a). The rotating ring (2) is axially rotatably connected to the support plate (1), and the upper surface of the rotating ring (2) forms the support part (2a) of the flow guiding structure (100). The inner ring of the rotating ring (2) and the clearance opening (1a) are in the same position; When the supporting part (2a) supports the flow guiding structure (100), the flow guiding structure (100) can extend from the inner ring of the rotating ring (2) and the relief port (1a) to the relief area (1b).

2. The maintenance device for the single crystal furnace flow guiding structure as described in claim 1, characterized in that: It also includes a bracket (3), the tray (1) is fixedly connected to the bracket (3), and the clearance area (1b) is formed in the bracket (3).

3. The maintenance device for the single crystal furnace flow guiding structure as described in claim 2, characterized in that: The vertical height of the bracket (3) can be adjusted to a limit. The bracket (3) includes a horizontally extending upper frame (31) and a vertically extending support rod (32). The support rod (32) is fixedly connected to the upper frame (31), and the height of the support rod (32) can be adjusted to a limit.

4. The maintenance device for the flow guiding structure of the single crystal furnace as described in claim 2, characterized in that: It also includes a rotating assembly (4), the rotating ring (2) being rotatably connected to the tray (1) via the rotating assembly (4).

5. The maintenance device for the single crystal furnace flow guiding structure as described in claim 4, characterized in that: The rotating assembly (4) includes a fixed ring (41), a wheel frame (42), and rollers (43). The fixed ring (41) is fixedly connected to the support plate (1), and a first annular groove (41a) is formed on its upper surface. The rollers (43) are rotatably connected to the wheel frame (42) along the radial direction of the wheel frame (42), and multiple rollers (43) are circumferentially distributed on the wheel frame (42). A second annular groove (2b) is formed on the lower surface of the rotating ring (2); The wheel frame (42) matches the radius of the first annular groove (41a) and the second annular groove (2b); When the rotating ring (2) is rotatably connected to the pallet (1), the wheel frame (42) remains detached from the rotating ring (2) and the fixed ring (41), the upper tangent of all the rollers (43) coincides with the top surface of the second ring groove (2b), and the lower tangent of all the rollers (43) coincides with the bottom surface of the first ring groove (41a).

6. The maintenance device for the flow guiding structure of the single crystal furnace as described in claim 5, characterized in that: The rotating assembly (4) further includes an inner retaining ring (44) and an outer retaining ring (45) fixedly connected to the fixed ring (41). An mounting ring groove is formed between the inner retaining ring (44) and the outer retaining ring (45). The wheel frame (42) is disposed in the mounting ring groove, and the radial side walls of the wheel frame (42) are clearance-fitted with the side walls of the inner retaining ring (44) and the outer retaining ring (45).

7. The maintenance device for the single crystal furnace flow guiding structure as described in claim 6, characterized in that: The lower surface of the rotating ring (2) forms a limiting protrusion ring (2c), and the radial side walls of the limiting protrusion ring (2c) are in clearance fit with the side walls of the inner retaining ring (44) and the outer retaining ring (45).

8. The maintenance device for the flow guiding structure of the single crystal furnace as described in claim 2, characterized in that: It also includes a rotation drive (5) fixedly connected to the bracket (3), the rotation drive (5) being adapted to drive the rotating ring (2) to rotate axially.

9. The maintenance device for the flow guiding structure of the single crystal furnace as described in claim 2, characterized in that: It also includes a cleaning device, which is fixedly connected to the bracket (3) and includes a cleaning part; When the flow guiding structure (100) rotates with the rotating ring (2), the cleaning part contacts the side wall of the flow guiding structure (100) to achieve cleaning.

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