A furnace cover locking mechanism for a vacuum apparatus

Abstract

This utility model relates to a furnace cover locking mechanism for vacuum equipment, including a platform connected to the upper flange of the furnace body and a furnace cover positioned above the upper flange. The key technical features are: a lower locking ring is fixed to the upper surface of the platform around the upper flange; an upper locking ring and a concentric pressure ring pressing the edge of the upper locking ring are positioned above the lower locking ring; multiple radial grooves are evenly distributed on the upper surface of the lower locking ring; multiple oblong through holes are evenly distributed on the upper locking ring; the number of oblong through holes is equal to and corresponds one-to-one with the number of radial grooves; the radial grooves and corresponding oblong through holes are arranged at a set angle; a slider is provided in the radial groove; a sliding pin is provided on the upper surface of the slider away from the furnace cover and inserted into the oblong through hole; a hydraulic cylinder is also fixed to the upper surface of the platform; a rocker arm is hinged to the end of the extension rod of the hydraulic cylinder; the other end of the rocker arm is connected and fixed to the upper locking ring. This mechanism has high locking efficiency, greatly reducing the labor intensity of operators, while also providing good sealing and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum equipment technology, and specifically to a furnace lid locking mechanism for vacuum equipment. Background Technology

[0002] Vacuum equipment (such as vacuum sintering furnaces and vacuum heat treatment furnaces) is widely used in metallurgy, materials, electronics and other fields. Its core requirement is to maintain a high vacuum environment inside the furnace to achieve oxidation-free processing. As a key component for sealing and opening / closing the equipment, the reliability of the furnace lid's opening and closing mechanism directly determines the stability of the equipment's vacuum level, operating efficiency and safety, thus becoming one of the core components in the design of vacuum equipment.

[0003] However, manual operation remains the most common method for opening and closing the furnace lid in vacuum equipment. This method relies on bolts to tighten the lid for sealing, but it suffers from the following problems: 1. When manually tightening bolts, it's difficult to control the tightening force evenly, easily causing an imbalance in the sealing surface, leading to vacuum leakage and affecting the stability of the equipment's vacuum level; 2. Manual operation is extremely inefficient, especially in scenarios with high sealing requirements. Repeated tightening of bolts or pressing of clips is necessary to ensure a seal, with each operation taking 5-15 minutes. Furthermore, prolonged repetitive operation can lead to hand fatigue and increased labor intensity for operators. Utility Model Content

[0004] The purpose of this invention is to provide a furnace cover locking mechanism for vacuum equipment that is structurally reasonable and reliable in use, which solves the above-mentioned problems. It has high locking efficiency, greatly reduces the labor intensity of operators, and has good sealing performance and high reliability.

[0005] The technical solution of this utility model is: A furnace cover locking mechanism for a vacuum equipment includes a platform connected to an upper flange of the furnace body and a furnace cover positioned above the upper flange of the furnace body. The key technical features are: a lower locking ring is fixed to the upper surface of the platform around the position of the upper flange of the furnace body; an upper locking ring and a concentric pressure ring pressing the edge of the upper locking ring are provided above the lower locking ring; a plurality of radial through grooves are uniformly provided on the upper surface of the lower locking ring; a plurality of oblong through holes are uniformly provided on the upper locking ring; the number of oblong through holes is equal to the number of radial through grooves and corresponds one-to-one; the radial through grooves and the corresponding oblong through holes are arranged at a set angle; a slider is provided in each radial through groove; a sliding post is provided on the upper surface of the slider away from the furnace cover end and inserted into the oblong through hole; a hydraulic cylinder is also fixed to the upper surface of the platform; a rocker arm is hinged to the end of the telescopic rod of the hydraulic cylinder; and the other end of the rocker arm is connected and fixed to the upper locking ring.

[0006] The furnace cover locking mechanism for vacuum equipment described above has a lower locking ring with a corresponding lower positioning surface on the upper surface edge, a radial pressure edge on the upper end of the concentric pressure ring, and an annular lowering groove on the upper surface edge of the upper locking ring that cooperates with the radial pressure edge.

[0007] In the aforementioned furnace cover locking mechanism for vacuum equipment, the contact surface between the upper locking ring and the lower locking ring is a conical surface that is wider at the top and narrower at the bottom. The bottom surface of the radial through groove is an inclined surface, and the lower end of the inclined surface is close to the furnace cover. The upper surface edge of the furnace cover is a conical surface that is narrower at the top and wider at the bottom and is lower than the lower end of the inclined surface.

[0008] The furnace cover locking mechanism for vacuum equipment described above has multiple rectangular grooves evenly distributed on the bottom surface of the lower locking ring, which not only reduces structural weight but also serves as a channel for the furnace cover to lead out wires, thus balancing functionality and lightweight design.

[0009] The furnace cover locking mechanism for the aforementioned vacuum equipment has an annular sealing groove on the upper surface of the upper flange of the furnace body, and an O-ring seal that is tightly connected to the furnace cover is provided in the annular sealing groove.

[0010] In the aforementioned furnace lid locking mechanism for vacuum equipment, the slider and the slide column are respectively a brass slider and a brass slide column.

[0011] The beneficial effects of this utility model are: 1. Significantly improved efficiency in opening and locking the furnace lid, reducing labor costs: Compared to traditional manual operation (5-15 minutes per operation) and simple semi-automatic mechanisms (requiring secondary inspection), this utility model achieves automated linkage of "hydraulic cylinder-rocker arm-upper locking ring-sliding column-slider", reducing the time for opening and closing to within 1 minute per operation, increasing efficiency by 5-15 times; no need for manual bolt tightening or inspection, reducing hand fatigue, and saving 1-2 hours of labor time per day for 3-5 operation scenarios per day.

[0012] 2. Reliable sealing and reduced vacuum leakage: The "sloping surface adaptive clamping" design allows each slider to move down synchronously along the sloping surface of the radial through groove, applying uniform pressure to the circumference of the furnace cover. This ensures that the furnace cover and the O-ring seal below it are subjected to consistent force throughout the circumference, avoiding leakage caused by uneven manual force or insufficient driving force of simple mechanisms. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the structure of this utility model; Figure 2 yes Figure 1 Top view (locked state); Figure 3 This is a schematic diagram of the non-locking state of this utility model; Figure 4 yes Figure 1Schematic diagram of the upper and middle locking ring; Figure 5 yes Figure 1 A schematic diagram of the lower locking ring.

[0014] In the diagram: 1. Hydraulic cylinder, 2. Rocker arm, 3. Concentric pressure ring, 4. O-ring seal, 5. Upper locking ring, 6. Lower locking ring, 7. Slider, 8. Sliding column, 9. Furnace cover, 10. Furnace body, 11. Platform, 12. Waist-shaped through hole, 13. Annular reduction groove, 14. Radial through groove, 15. Reduction positioning surface, 16. Rectangular groove. Detailed Implementation

[0015] The present invention will be described in detail with reference to the accompanying drawings.

[0016] like Figures 1-5 As shown, the furnace cover locking mechanism for vacuum equipment includes a platform 11 connected to the upper flange of the furnace body 10 and a furnace cover 9 located above the upper flange of the furnace body 10. The furnace cover 9 and the upper flange of the furnace body 10 are assembled in an centered manner. The upper surface of the upper flange of the furnace body 10 is provided with an annular sealing groove, and an O-ring seal 4 that is tightly connected to the furnace cover 9 is provided in the annular sealing groove.

[0017] The lower locking ring 6 is fixed to the upper surface of the platform 11 around the position of the upper flange of the furnace body. Above the lower locking ring 6 is an upper locking ring 5 and a concentric pressure ring 3 that presses against the edge of the upper locking ring 5. The upper surface of the lower locking ring 6 has three evenly distributed radial through grooves 14, and the upper locking ring 5 has three evenly distributed oblong through holes 12. Each oblong through hole 12 corresponds to one of the radial through grooves 14, and the radial through grooves 14 and their corresponding oblong through holes 12 are arranged at a set angle. A slider 7 is provided in each radial through groove 14, and a sliding post 8, inserted into the oblong through hole 12, is located on the upper surface of the slider 7 away from the furnace cover. The slider 7 and sliding post 8 are brass slider and brass sliding post, respectively, utilizing self-lubricating properties to reduce the coefficient of friction on the contact surface and ensure smooth operation of the mechanism.

[0018] A hydraulic cylinder 1 is fixed on the upper surface of the platform 11. A rocker arm 2 is hinged to the end of the telescopic rod of the hydraulic cylinder 1. The other end of the rocker arm 2 is connected and fixed to the upper locking ring 5.

[0019] In this embodiment, the upper surface edge of the lower locking ring 6 is provided with a lowering positioning surface 15 corresponding to the lower end of the concentric pressure ring 3. The upper end of the concentric pressure ring 3 is provided with a radial pressure edge. The upper surface edge of the upper locking ring 5 is provided with an annular lowering groove 13 that cooperates with the radial pressure edge. The contact surface between the upper locking ring 5 and the lower locking ring 6 is a conical surface that is wider at the top and narrower at the bottom. The bottom surface of the radial through groove 14 is an inclined surface, and the lower end of the inclined surface is close to the furnace cover 9. The upper surface edge of the furnace cover 9 is a conical surface that is narrower at the top and wider at the bottom and is lower than the lower end of the inclined surface. The bottom surface of the lower locking ring 6 is uniformly provided with multiple rectangular grooves 16, which not only achieves structural weight reduction but also serves as a channel for the furnace cover to lead out wires, thus balancing functionality and lightweight design.

[0020] Working principle: 1. When the furnace cover 9 needs to be closed and sealed, the telescopic rod of the hydraulic cylinder 1 retracts and pulls the rocker arm 2, causing the upper locking ring 5 to rotate counterclockwise around the center line of the furnace cover 9, forcing the three sliding pillars 8 to slide in the waist-shaped through hole 12 and driving the slider 7 to move downward along the bottom slope of the radial through groove 14 of the lower locking ring 6, and finally pressing evenly on the edge of the upper surface of the furnace cover 9.

[0021] 2. When opening, the extension rod of the hydraulic cylinder 1 extends outward to push the rocker arm 2, and the upper locking ring 5 rotates clockwise around the center line of the furnace cover, forcing the three sliding pins 8 to slide in opposite directions in the waist-shaped through hole 12, and causing the slider 7 to retract along the bottom slope of the radial through groove 14 to release the furnace cover 9, which can then be easily opened.

[0022] 3. This utility model operates smoothly and reduces maintenance frequency. The brass sliding column 8 and slider 7 are self-lubricating, reducing friction and jamming; the concentric pressure ring 3 and the upper locking ring 5 have a pre-reserved gap to avoid motion interference. The mechanism can be opened and closed thousands of times without failure, and the wear of core components is reduced by more than 60%, reducing maintenance frequency and costs.

[0023] 4. This utility model is lightweight and multifunctional, suitable for small equipment. The rectangular groove 16 at the bottom of the lower locking ring 6 reduces weight by 20%-30% and can also be used to pass wires without additional holes, improving the integration of the equipment and meeting the needs of small equipment that are space-constrained and have diverse functions.

[0024] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A furnace cover locking mechanism for a vacuum equipment, comprising a platform connected to an upper flange of the furnace body and a furnace cover disposed above the upper flange of the furnace body, characterized in that: The upper surface of the platform is fixed with a lower locking ring around the position of the upper flange of the furnace body. Above the lower locking ring is an upper locking ring and a concentric pressure ring that presses the edge of the upper locking ring. The upper surface of the lower locking ring is evenly provided with multiple radial through grooves. The upper locking ring is evenly provided with multiple waist-shaped through holes. The number of waist-shaped through holes is equal to the number of radial through grooves and corresponds one-to-one. The radial through grooves and the corresponding waist-shaped through holes are arranged at a set angle. A slider is provided in the radial through groove. The upper surface of the slider is provided with a sliding column that is inserted into the waist-shaped through hole at the end away from the furnace cover. A hydraulic cylinder is also fixed on the upper surface of the platform. The telescopic rod end of the hydraulic cylinder is hinged to a rocker arm. The other end of the rocker arm is connected and fixed to the upper locking ring.

2. The furnace lid locking mechanism for vacuum equipment according to claim 1, characterized in that: The upper surface edge of the lower locking ring is provided with a lowering positioning surface corresponding to the lower end of the concentric pressure ring, the upper end of the concentric pressure ring is provided with a radial pressure edge, and the upper surface edge of the upper locking ring is provided with an annular lowering groove that cooperates with the radial pressure edge.

3. The furnace lid locking mechanism for vacuum equipment according to claim 1, characterized in that: The contact surface between the upper locking ring and the lower locking ring is a conical surface that is wider at the top and narrower at the bottom. The bottom surface of the radial through groove is an inclined surface, and the lower end of the inclined surface is close to the furnace cover. The upper surface edge of the furnace cover is a conical surface that is narrower at the top and wider at the bottom and is lower than the lower end of the inclined surface.

4. The furnace lid locking mechanism for vacuum equipment according to claim 1, characterized in that: The bottom surface of the lower locking ring is uniformly provided with multiple rectangular grooves.

5. The furnace lid locking mechanism for vacuum equipment according to claim 1, characterized in that: The upper surface of the flange of the furnace body is provided with an annular sealing groove, and an O-ring seal that is tightly connected to the furnace cover is provided in the annular sealing groove.

6. The furnace lid locking mechanism for vacuum equipment according to claim 1, characterized in that: The slider and the slide bar are respectively a brass slider and a brass slide bar.

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