High-temperature shunt plate structure for purification vacuum furnace

Abstract

The utility model relates to high temperature shunt plate structure technical field, concretely relates to a kind of high temperature shunt plate structure for purification vacuum furnace, including lower plate, upper plate and the connecting structure for both, lower plate includes lower frame, lower inner plate fixed in lower frame and lower butt joint groove being opened in lower inner plate top, lower butt joint groove is fixed with movable sleeve, upper plate includes upper frame, upper inner plate being set in upper frame, the inside of upper inner plate is fixed with the fixed seat in connecting structure, movable sleeve and fixed seat are fixedly connected by clamping, movable sleeve includes bottom bar, thin rod being fixed on bottom bar and movable block being sleeved on the outside of thin rod.

Description

Technical Field

[0001] This utility model relates to the technical field of high-temperature flow divider structure, specifically to a high-temperature flow divider structure for a purification vacuum furnace. Background Technology

[0002] During the operation of a purification vacuum furnace, the high-temperature flow divider, as a core functional component, plays a crucial role in optimizing the airflow distribution within the furnace, ensuring temperature uniformity, and improving impurity separation efficiency. Its structural design directly determines the overall process performance and stability of the purification vacuum furnace. As material purification technologies continuously demand higher precision, efficiency, and equipment lifespan, existing high-temperature flow dividers have gradually revealed numerous technical deficiencies, making it difficult to meet the requirements of demanding purification scenarios.

[0003] First, existing high-temperature flow dividers mostly adopt an integrated or simple splicing structure, which is significantly inconvenient during installation and disassembly. The integrated structure is not only difficult to manufacture, but also requires the entire unit to be replaced when local wear, deformation or failure occurs, which greatly increases maintenance costs and downtime; while traditional splicing structures mostly rely on bolts, welding and other fixing methods.

[0004] Secondly, existing high-temperature manifolds lack sufficient airflow guidance and distribution capabilities. Most manifolds achieve airflow transmission only through a single flow channel or a simple tank, making it difficult to accurately distribute airflow according to the process requirements of different areas within the purification vacuum furnace. This easily leads to dead air zones or uneven local airflow velocities, resulting in insufficient contact between materials and process gases, low efficiency in impurity reaction and removal, and increased purification cycles and energy consumption. Furthermore, the inner and outer layer structures of some manifolds are poorly designed, failing to create mutually cooperating airflow buffer and guiding spaces, further exacerbating airflow turbulence and affecting the stability of the temperature field within the furnace.

[0005] Furthermore, the existing connection structure of high-temperature diversion plates has poor reliability under high-temperature environments. Traditional connection components often lack elastic buffering and self-adjusting capabilities. During long-term high-temperature cycling, gaps are easily generated at the connection points due to thermal deformation. This not only damages the structural integrity of the diversion plate but may also cause high-temperature gases to directly erode other components inside the furnace, shortening the equipment's service life. Utility Model Content

[0006] Technical problems to be solved

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-temperature flow divider structure for a purification vacuum furnace, which can effectively solve the problems in the existing technology.

[0008] Technical solution

[0009] This utility model provides a high-temperature flow divider structure for a purification vacuum furnace, including a lower plate, an upper plate, and a connecting structure for the two. The lower plate includes a lower frame, a lower inner plate fixed within the lower frame, and a lower connecting groove at the top of the lower inner plate. A movable sleeve is fixed within the lower connecting groove. The upper plate includes an upper frame and an upper inner plate disposed within the upper frame. A fixed seat within the connecting structure is fixed to the inner side of the upper inner plate. The movable sleeve and the fixed seat are locked together. The movable sleeve includes a bottom rod, a thin rod fixed to the bottom rod, and a movable block sleeved on the outside of the thin rod. A round block is fixed to the top of the thin rod. The fixed seat includes a T-shaped rod, a cavity inside the T-shaped rod, and an inner cavity on the side wall of the cavity. A spring is fixed within the inner cavity. The outer side of the spring is fixedly connected to the locking block, and the outer side of the locking block contacts the bottom of the round block.

[0010] Furthermore, there is a gap between the lower inner plate and the lower frame to form a lower groove, and there is a gap between the upper frame and the upper inner plate to form an upper outer groove. The upper inner plate is a closed strip structure, and the enclosed space formed inside it forms an upper inner groove. The lower frame is opened in the upper outer groove, and the lower inner plate is opened in the upper inner groove.

[0011] Furthermore, the cross-sections of both the lower plate and the upper plate are cross-shaped structures with a circle in the middle, and each cross-shaped structure is provided with a set of connecting structures.

[0012] Furthermore, the locking block protrudes from the inner cavity, the inner diameter of the cavity is the same as the outer diameter of the base rod, and the outer diameters of the round block and the movable block are the same as the inner diameter of the cavity.

[0013] Furthermore, the circular block is a hemisphere with an upward arc, and the upper and lower outer surfaces of the movable block have a sloping structure.

[0014] Furthermore, the middle part of the lower plate remains connected to the two sets of ports.

[0015] Beneficial effects

[0016] This invention employs a split design for the lower and upper plates, and achieves rapid assembly and disassembly through a locking connection structure composed of a movable sleeve and a fixed base. The bottom rod, thin rod, and movable block in the movable sleeve cooperate with the T-shaped rod, spring, and locking block in the fixed base, allowing for connection and fixation through a simple insertion and removal action. The circular block (a hemisphere, arc-shaped upwards) and the movable block (with beveled upper and lower outer surfaces) compress the locking block during insertion, causing the spring to contract. After installation, the spring returns to its original position, pushing the locking block to lock in place, achieving rapid positioning. This design eliminates the need for complex fixing methods such as bolts and welding, simplifying the installation process and facilitating later partial maintenance (such as replacing the lower or upper inner plate separately). It avoids the problem of requiring complete replacement of an integrated structure, significantly reducing maintenance costs and downtime.

[0017] In this device, the spring and locking block design in the connecting structure provides elastic buffering for the connection points under high-temperature conditions, offsetting structural deformation caused by thermal expansion and contraction, preventing the formation of connection gaps, ensuring the overall sealing of the diverter plate, and preventing damage to the vacuum level or gas leakage inside the furnace. Furthermore, the lower and upper plates are fixed together by a movable sleeve and a fixed seat, resulting in high connection strength. The precise dimensional matching at the joints of the split structure (such as the consistency of the cavity with the bottom rod and the circular block dimensions) further enhances the structural tightness, effectively preventing high-temperature gases from directly impacting other components inside the furnace and extending the equipment's service life. Simultaneously, the multiple connecting structures on the cross structure ensure more even stress distribution on the lower and upper plates, avoiding structural damage caused by localized stress concentration and improving the durability of the diverter plate during long-term high-temperature cycling. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the structure in this utility model;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at point A;

[0023] Figure 5This is a structural exploded view of the connecting structure in this utility model.

[0024] The labels in the diagram represent: 1. Lower plate; 11. Lower frame; 12. Lower inner plate; 121. Lower connecting groove; 13. Lower groove body; 2. Upper plate; 21. Upper frame; 22. Upper inner plate; 23. Upper outer groove body; 24. Upper inner groove body; 3. Connecting structure; 31. Movable sleeve; 311. Bottom rod; 312. Thin rod; 313. Movable block; 314. Round block; 32. Fixed seat; 321. T-shaped rod; 322. Cavity; 323. Inner cavity; 324. Spring; 325. Locking block; 4. Port. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example: A high-temperature flow divider structure for a purification vacuum furnace, see attached diagram. Figure 1 - Appendix Figure 5 The system includes a lower plate 1, an upper plate 2, and a connecting structure 3 for the two. The lower plate 1 includes a lower frame 11, a lower inner plate 12 fixed within the lower frame 11, and a lower connecting groove 121 formed at the top of the lower inner plate 12. A movable sleeve 31 is fixed within the lower connecting groove 121. The upper plate 2 includes an upper frame 21 and an upper inner plate 22 disposed within the upper frame 21. A fixing seat 32 within the connecting structure 3 is fixed to the inner side of the upper inner plate 22. The movable sleeve 31 and the fixing seat 32 are locked together and fixedly connected. The movable sleeve 31 contains... The base includes a base rod 311, a thin rod 312 fixed on the base rod 311, and a movable block 313 sleeved on the outside of the thin rod 312. A round block 314 is fixed at the top of the thin rod 312. The fixed base 32 includes a T-shaped rod 321, a cavity 322 opened on the inside of the T-shaped rod 321, and an inner cavity 323 opened on the side wall of the cavity 322. A spring 324 is fixed in the inner cavity 323. The outer side of the spring 324 is fixedly connected to the locking block 325. The outer side of the locking block 325 contacts the bottom of the round block 314.

[0028] A gap exists between the lower inner plate 12 and the lower frame 11, forming a lower groove 13. A gap exists between the upper frame 21 and the upper inner plate 22, forming an upper outer groove 23. The upper inner plate 22 is a closed strip structure, and the enclosed space formed inside it forms an upper inner groove 24. The lower frame 11 is located within the upper outer groove 23, and the lower inner plate 12 is located within the upper inner groove 24. Furthermore, the cross-sections of both the lower plate 1 and the upper plate 2 are designed as a "cross structure with a circle in the middle," and a set of connecting structures 3 are respectively provided on the cross structure. This shape can be highly adapted to the airflow path within the purification vacuum furnace, reducing airflow at the inlet and outlet ends of the flow divider. Turbulence guides the uniform diffusion of airflow. On the other hand, a lower groove 13 is formed between the lower inner plate 12 and the lower frame 11, and an upper outer groove 23 is formed between the upper frame 21 and the upper inner plate 22. A closed upper inner groove 24 is formed inside the upper inner plate 22. The lower frame 11 is located within the upper outer groove 23, and the lower inner plate 12 is located within the upper inner groove 24. This multi-layered groove nesting structure creates multi-level airflow buffer and guiding spaces, effectively avoiding dead zones in the airflow and ensuring that the process gas can uniformly cover all areas within the furnace. This increases the contact area and contact time between the material and the gas, thereby improving the efficiency of impurity reaction and removal, and shortening the purification cycle. Simultaneously, the middle of the lower plate 1 remains connected to the two sets of ports 4, further ensuring smooth airflow transmission and preventing localized airflow congestion.

[0029] Both the lower plate 1 and the upper plate 2 have a cross-shaped cross structure with a circle in the middle, and each cross structure is provided with a set of connecting structures 3; the middle part of the lower plate 1 is connected to the two sets of ports 4.

[0030] The locking block 325 protrudes from the inner cavity 323. The inner diameter of the cavity 322 is the same as the outer diameter of the bottom rod 311. The outer diameters of the round block 314 and the movable block 313 are the same as the inner diameter of the cavity 322.

[0031] The circular block 314 is a hemispherical shape with an upward arc, and the upper and lower outer surfaces of the movable block 313 are sloped. The spring 324 and the locking block 325 in the connecting structure 3 provide elastic buffering for the connection parts under high-temperature conditions, offsetting structural deformation caused by thermal expansion and contraction, avoiding the generation of connection gaps, ensuring the overall sealing of the diverter plate, and preventing damage to the vacuum or gas leakage in the furnace. In addition, the lower plate 1 and the upper plate 2 are fixed by the locking of the movable sleeve 31 and the fixed seat 32, resulting in high connection strength. The splicing of the split structure is further improved by precise dimensional matching (such as the consistency of the dimensions of the cavity 322 with the bottom rod 311 and the circular block 314), which can effectively prevent high-temperature gas from directly impacting other components in the furnace and extend the service life of the equipment. At the same time, the multiple sets of connecting structures 3 on the cross structure can make the lower plate 1 and the upper plate 2 more evenly stressed, avoiding structural damage caused by local stress concentration and improving the durability of the diverter plate in long-term high-temperature cycling.

[0032] In use: The nested structure of the multi-layer tank (lower tank 13, upper outer tank 23, upper inner tank 24) not only optimizes the airflow distribution, but also plays a role in heat buffering and conduction to a certain extent. The tank can reduce local heat loss. Combined with the overall structural design of the flow divider, the heat in the furnace can be evenly transferred with the airflow, avoiding local temperature too high or too low. At the same time, the layout of the cross-shaped cross section and multiple sets of connection structures 3 can ensure the stability of the overall temperature field of the flow divider, providing a precise and stable temperature environment for material purification, reducing the purification quality difference caused by temperature fluctuations, and improving the purity and consistency of the final product.

[0033] The design employs a split structure of lower plate 1 and upper plate 2, and achieves rapid assembly and disassembly through a locking connection structure 3 consisting of movable sleeve 31 and fixed base 32. The bottom rod 311, thin rod 312, and movable block 313 in movable sleeve 31 cooperate with the T-shaped rod, spring 324, and locking block 325 in fixed base 32, allowing for connection and fixation through simple insertion and removal. The circular block 314 (a hemisphere, arc-shaped upward) and the movable block 313 (with beveled upper and lower outer surfaces) can compress the locking block 325 during insertion, causing the spring 324 to retract. After installation, the spring 324 returns to its original position, pushing the locking block 325 to lock in place, achieving rapid positioning. Simultaneously, the cavity 322... The inner diameter of the T-shaped rod 321 is the same as the outer diameter of the bottom rod 311. The outer diameters of the round block 314 and the movable block 313 are consistent with the inner diameter of the cavity 322, ensuring a tight structure after connection. When the fixing is removed, the T-shaped rod 321 moves towards the lower plate 1, and the locking block 325 contacts the movable block 313 and moves to the bottom of the movable block 313. Since the bottom of the movable block 313 is a sloping structure, the locking block 325 pops out from the outside of the movable block 313, canceling the fixing effect with the bottom rod 311. Therefore, the upper plate 2 and the lower plate 1 can be separated at this time. This design does not rely on complex fixing methods such as bolts and welding, which not only simplifies the installation process, but also facilitates later local maintenance (such as replacing the lower inner plate 12 or the upper inner plate 22 separately), avoiding the problem of replacing the whole integrated structure, and significantly reducing maintenance costs and downtime.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-temperature flow divider structure for a purification vacuum furnace, characterized in that, The system includes a lower plate (1), an upper plate (2), and a connecting structure (3) for the two. The lower plate (1) includes a lower frame (11), a lower inner plate (12) fixed inside the lower frame (11), and a lower connecting groove (121) opened at the top of the lower inner plate (12). A movable sleeve (31) is fixed inside the lower connecting groove (121). The upper plate (2) includes an upper frame (21) and an upper inner plate (22) disposed inside the upper frame (21). A fixing seat (32) in the connecting structure (3) is fixed to the inner side of the upper inner plate (22). The movable sleeve (31) and the fixing seat (32) are locked together. The fixture includes a base rod (311), a thin rod (312) fixed on the base rod (311), and a movable block (313) sleeved on the outside of the thin rod (312). A round block (314) is fixed to the top of the thin rod (312). The fixture (32) includes a T-shaped rod (321), a cavity (322) opened inside the T-shaped rod (321), and an inner cavity (323) opened on the side wall of the cavity (322). A spring (324) is fixed inside the inner cavity (323). The outer side of the spring (324) is fixedly connected to the locking block (325). The outer side of the locking block (325) is in contact with the bottom of the round block (314).

2. The high-temperature flow divider plate structure for a purification vacuum furnace according to claim 1, characterized in that, There is a gap between the lower inner plate (12) and the lower frame (11) to form a lower groove (13). There is a gap between the upper frame (21) and the upper inner plate (22) to form an upper outer groove (23). The upper inner plate (22) is a closed strip structure, and the enclosed space formed inside it forms an upper inner groove (24). The lower frame (11) is opened in the upper outer groove (23), and the lower inner plate (12) is opened in the upper inner groove (24).

3. The high-temperature flow divider plate structure for a purification vacuum furnace according to claim 1, characterized in that, The cross-sections of the lower plate (1) and the upper plate (2) are both cross structures with a circle in the middle, and each cross structure is provided with a set of connecting structures (3).

4. The high-temperature flow divider plate structure for a purification vacuum furnace according to claim 1, characterized in that, The locking block (325) protrudes from the inner cavity (323), the inner diameter of the cavity (322) is the same as the outer diameter of the bottom rod (311), and the outer diameters of the round block (314) and the movable block (313) are the same as the inner diameter of the cavity (322).

5. The high-temperature flow divider plate structure for a purification vacuum furnace according to claim 4, characterized in that, The circular block (314) is a hemisphere with an arc shape pointing upwards, and the upper and lower outer surfaces of the movable block (313) are inclined structures.

6. The high-temperature flow divider plate structure for a purification vacuum furnace according to claim 1, characterized in that, The middle part of the lower plate (1) is connected to the two sets of ports (4).

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