Vacuum furnace

Abstract

The utility model discloses a vacuum furnace, which relates to the technical field of vacuum furnaces and comprises a vacuum furnace main body, a preheating bin and a vacuum heating bin are arranged in the vacuum furnace main body, and a support mounting frame is fixed on the outer side of the vacuum furnace main body; according to the device, the limiting mechanism is arranged, the limiting position of the movable plate can be adjusted, materials conveyed on the conveying belt body are limited through the movable plate, the conditions of material deviation and falling are avoided, and machining of the vacuum furnace body is facilitated; the device is provided with a stabilizing mechanism, after the mounting plate is fixed to the outer side of the vacuum furnace body, the corresponding face of the fixed mounting block on the outer side of the mounting plate is attached to the outer side of the vacuum furnace body, then the guide mounting block is pushed in the vertical direction, and the corresponding face of the positioning metal nut is attached to the movable connecting sleeve; fixing between the movable connecting sleeve and the fixed mounting block is conveniently completed, and the stability of fixed connection between the mounting plate and the vacuum furnace main body is improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum furnace technology, specifically a vacuum furnace. Background Technology

[0002] A vacuum furnace is a device for heating in a vacuum environment. It is connected to a high-vacuum pump system via pipes within a furnace chamber sealed by a metal casing or quartz glass cover. The furnace vacuum level can reach 133 × (10⁻² to 10⁻⁴) Pa. The furnace heating system can use direct electric resistance wire (such as tungsten wire) or high-frequency induction heating. The maximum temperature can reach approximately 3000℃. It is mainly used for ceramic firing, vacuum smelting, degassing and annealing of electro-vacuum parts, brazing of metal parts, and ceramic-metal sealing.

[0003] Chinese patent discloses a vertical vacuum furnace (authorization announcement number CN 218455362 U). This patented technology includes a support assembly, a vacuum furnace, a vacuum furnace cover, a control box, a spray tower, a water ring vacuum pump, an internal support, a furnace cover opening and closing mechanism, a furnace cover lifting and rotating mechanism, and a waste collection mechanism. The vertical vacuum furnace utilizes a furnace cover opening and closing mechanism to facilitate the opening and closing of the vacuum furnace cover under the control of a controller, and can tightly press the vacuum furnace cover against the furnace opening to ensure the airtightness of the vacuum furnace. The furnace cover lifting and rotating mechanism facilitates the lifting or rotating of the vacuum furnace cover under the control of a controller, moving the internal support in and out of the vacuum furnace, thereby facilitating loading and unloading by operators. The waste collection mechanism collects waste generated during the heating process, preventing waste accumulation at the bottom of the vacuum furnace.

[0004] However, during the operation of the aforementioned vacuum furnace, the lack of corresponding limiting devices during material conveying can lead to material skewing and affect normal processing. Therefore, those skilled in the art have provided a vacuum furnace to solve the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum furnace to solve the problems raised in the prior art.

[0006] A vacuum furnace includes a vacuum furnace body, a preheating chamber and a vacuum heating chamber are arranged inside the vacuum furnace body, a support mounting frame is fixed on the outside of the vacuum furnace body, a conveyor belt body is installed on the outside of the support mounting frame, a limit mechanism is fixed on the outside of the support mounting frame, an mounting plate is arranged on the outside of the vacuum furnace body, and a stabilizing mechanism is arranged on the outside of the vacuum furnace body.

[0007] The preheating chamber is equipped with a vacuum pump and an exhaust fan. The vacuum furnace body is equipped with a hot air fan located below the preheating chamber. The vacuum heating chamber is fixedly installed with a lifting cylinder. The telescopic end of the lifting cylinder is connected to the upper vacuum furnace assembly through a floating joint. The upper end of the upper vacuum furnace assembly is equipped with a vacuum pump joint. The vacuum pump joint is connected to the vacuum pump. The lower vacuum furnace assembly is located below the upper vacuum furnace assembly and matches the upper vacuum furnace assembly.

[0008] The limiting mechanism includes an L-shaped bracket, a support spring connected to one side of the L-shaped bracket, a movable plate connected to one end of the support spring, a guide threaded rod fixed to the outside of the movable plate, a mounting handle fixed to one end of the guide threaded rod, a limiting threaded sleeve threadedly connected to the outside of the guide threaded rod, and a limiting frame fixed to the outside of the movable plate.

[0009] As a further improvement of this utility model: the L-shaped bracket and the support mounting bracket are fixedly connected, and the L-shaped bracket has a connecting hole inside to accommodate the movement of the guide threaded rod.

[0010] As a further improvement of this utility model: the L-shaped bracket has a through hole inside, and the size of the through hole is adapted to the size of the limiting frame.

[0011] As a further embodiment of this utility model: the stabilizing mechanism includes a guide sleeve, the guide sleeve having a guide connecting groove inside, the guide sleeve being slidably connected to a guide mounting block through the guide connecting groove, a movable connecting sleeve being fixed to the outside of the guide mounting block, a fixed mounting block being fixed to the top of the mounting plate, a positioning threaded rod being fixed to the outside of the fixed mounting block, and a positioning metal nut being threadedly connected to the outside of the positioning threaded rod.

[0012] As a further improvement of this utility model: the guide sleeve and the vacuum furnace body are fixedly connected, and the outer side of the positioning metal nut is provided with anti-slip texture.

[0013] As a further improvement of this utility model: the interior of the movable connecting sleeve is provided with a groove, and the size of the groove is adapted to the size of the positioning threaded rod.

[0014] As a further embodiment of this utility model: a guide rod is fixedly provided at the upper end of the upper vacuum furnace assembly, the guide rod is slidably provided on the guide seat, and a pressure relief assembly is provided at the lower end of the lower vacuum furnace assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This device is equipped with a limiting mechanism. When materials are conveyed through the conveyor belt, the support spring on one side of the L-shaped bracket provides elastic force to push the movable plate, which in turn drives the limiting frame to move and plays a guiding role. At the same time, the guide threaded rod on the outside of the movable plate can move, and the limiting threaded sleeve on the outside of the guide threaded rod plays a limiting role in the guide threaded rod, thereby adjusting the limiting position of the movable plate. The movable plate limits the material conveyed on the conveyor belt, preventing material deviation and falling, which is beneficial for the processing of the vacuum furnace body.

[0017] 2. This device is equipped with a stabilizing mechanism. After the mounting plate is fixed to the outside of the vacuum furnace body, the corresponding surface of the fixed mounting block on the outside of the mounting plate fits against the outside of the vacuum furnace body. Then, the guide mounting block is pushed vertically, allowing it to slide in the guide connecting groove. The movable connecting sleeve at the bottom of the guide mounting block can be movably sleeved on the outside of the positioning threaded rod, and a positioning metal nut is threadedly connected to the positioning threaded rod, so that the corresponding surface of the positioning metal nut is tightly against the movable connecting sleeve. This facilitates the fixing between the movable connecting sleeve and the fixed mounting block, improving the stability of the fixed connection between the mounting plate and the vacuum furnace body. Attached Figure Description

[0018] Figure 1 This is a perspective view of a vacuum furnace according to the present invention;

[0019] Figure 2 This is a schematic diagram of the limiting mechanism structure of a vacuum furnace according to the present invention;

[0020] Figure 3 This is a schematic diagram of the stabilizing mechanism of a vacuum furnace according to the present invention;

[0021] Figure 4 This utility model relates to a vacuum furnace. Figure 3 A magnified structural diagram of region A;

[0022] Figure 5 This is a schematic diagram of the internal structure of a vacuum furnace according to the present invention;

[0023] Figure 6 This is a schematic diagram of the internal structure of a vacuum heating chamber in a vacuum furnace according to this utility model.

[0024] The diagram shows the following components: 1. Vacuum furnace body; 2. Preheating chamber; 21. Vacuum pump; 22. Exhaust fan; 23. Hot air blower; 3. Support mounting frame; 4. Conveyor belt body; 5. Limiting mechanism; 51. L-shaped bracket; 52. Support spring; 53. Movable plate; 54. Limiting frame; 55. Guide threaded rod; 56. Mounting handle; 57. Limiting threaded sleeve; 6. Mounting plate; 7. Stabilizing mechanism; 71. Guide sleeve; 72. Guide connecting groove; 73. Guide mounting block; 74. Moving connecting sleeve; 75. Fixed mounting block; 76. Positioning threaded rod; 77. Positioning metal nut; 8. Vacuum heating chamber; 81. Lifting cylinder; 82. Floating joint; 83. Upper vacuum furnace assembly; 84. Vacuum extraction joint; 85. Lower vacuum furnace assembly; 86. Guide rod; 87. Guide seat; 88. Pressure relief assembly. Detailed Implementation

[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Please see Figures 1-6 This utility model provides a vacuum furnace, including a vacuum furnace body 1. The vacuum furnace body 1 is provided with a preheating chamber 2 and a vacuum heating chamber 8 inside. A support mounting frame 3 is fixed on the outside of the vacuum furnace body 1. A conveyor belt body 4 is installed on the outside of the support mounting frame 3. A limit mechanism 5 is fixed on the outside of the support mounting frame 3. An installation plate 6 is provided on the outside of the vacuum furnace body 1. A stabilizing mechanism 7 is provided on the outside of the vacuum furnace body 1.

[0027] The preheating chamber 2 is equipped with a vacuum pump 21 and an exhaust fan 22. A hot air blower 23 is located below the preheating chamber 2 inside the vacuum furnace body 1. A lifting cylinder 81 is fixedly installed inside the vacuum heating chamber 8. The telescopic end of the lifting cylinder 81 is connected to an upper vacuum furnace assembly 83 via a floating joint 82. A vacuum extraction joint 84 is located at the upper end of the upper vacuum furnace assembly 83 and is connected to the vacuum pump 21. A lower vacuum furnace assembly 85, matching the upper vacuum furnace assembly 83, is located below it. A guide rod 86 is fixedly installed at the upper end of the upper vacuum furnace assembly 83 and slidably mounted on a guide seat 87. A pressure relief assembly 88 is located at the lower end of the lower vacuum furnace assembly 85.

[0028] The limiting mechanism 5 includes an L-shaped bracket 51. A support spring 52 is connected to one side of the L-shaped bracket 51, and a movable plate 53 is connected to one end of the support spring 52. A guide threaded rod 55 is fixed to the outside of the movable plate 53. The L-shaped bracket 51 and the support mounting bracket 3 are fixedly connected. The L-shaped bracket 51 has a connecting hole inside to accommodate the movement of the guide threaded rod 55. A mounting handle 56 is fixed to one end of the guide threaded rod 55. A limiting threaded sleeve 57 is threadedly connected to the outside of the guide threaded rod 55. A limiting bracket 54 is fixed to the outside of the movable plate 53. The L-shaped bracket 51 has a... The through hole, whose size is adapted to the size of the limiting frame 54, allows the support spring 52 on one side of the L-shaped bracket 51 to provide elastic force to push the movable plate 53, which in turn drives the limiting frame 54 to move, thus playing a guiding role. At the same time, the guide threaded rod 55 on the outside of the movable plate 53 can move, and the limiting threaded sleeve 57 on the outside of the guide threaded rod 55 plays a limiting role in the guide threaded rod 55, thereby adjusting the limiting position of the movable plate 53. The movable plate 53 limits the material conveyed on the conveyor belt body 4, preventing the material from deviating or falling.

[0029] As a further improvement of this utility model:

[0030] During operation, the product exits the cleaning line and enters the vacuum furnace body 1. It first enters the preheating chamber 2, where the hot air blower 23 preheats the product. After preheating, the product is conveyed to the vacuum heating chamber 8. A lifting cylinder 81 lowers the upper vacuum furnace assembly 83, creating a sealed structure between the upper and lower vacuum furnace assemblies 85. A vacuum pump 21 evacuates the space between the upper and lower vacuum furnace assemblies 83 and 85, and then the vacuum is broken by a pressure relief assembly 88. After three consecutive processes, residual moisture is removed from the product. Finally, the product is guided by the conveyor belt body 4. When materials are conveyed through the conveyor belt body 4, the support spring 52 on one side of the L-shaped bracket 51 provides elastic force to push the movable plate 53, which in turn drives the limit frame 54 to move and plays a guiding role. At the same time, the guide threaded rod 55 on the outside of the movable plate 53 can move, and the limit threaded sleeve 57 on the outside of the guide threaded rod 55 plays a limiting role for the guide threaded rod 55, thereby adjusting the limiting position of the movable plate 53. The movable plate 53 limits the material conveyed on the conveyor belt body 4, avoiding material deviation and falling, which is conducive to the processing of the vacuum furnace body 1.

[0031] Please see Figure 1 and Figure 4This utility model provides a vacuum furnace. The stabilizing mechanism 7 includes a guide sleeve 71, with a guide connecting groove 72 inside the guide sleeve 71. A guide mounting block 73 is slidably connected to the guide sleeve 71 through the guide connecting groove 72. A movable connecting sleeve 74 is fixed to the outside of the guide mounting block 73. A fixed mounting block 75 is fixed to the top of the mounting plate 6. A positioning threaded rod 76 is fixed to the outside of the fixed mounting block 75. A positioning metal nut 77 is threaded to the outside of the positioning threaded rod 76. The guide sleeve 71 and the vacuum furnace body 1 are fixedly connected. The outside of the positioning metal nut 77 is provided with anti-slip texture. The movable connecting sleeve 74... The inner part has a groove, and the size of the groove is adapted to the size of the positioning threaded rod 76. The corresponding surface of the fixed mounting block 75 on the outer side of the mounting plate 6 is attached to the outer side of the vacuum furnace body 1. Then, the guide mounting block 73 is pushed vertically, which allows the guide mounting block 73 to slide in the guide connecting groove 72. The movable connecting sleeve 74 at the bottom of the guide mounting block 73 can be movably sleeved on the outer side of the positioning threaded rod 76, and is threadedly connected to the positioning threaded rod 76 using a positioning metal nut 77, so that the corresponding surface of the positioning metal nut 77 is tightly attached to the movable connecting sleeve 74, which facilitates the fixing between the movable connecting sleeve 74 and the fixed mounting block 75.

[0032] During use, after the mounting plate 6 is fixed to the outside of the vacuum furnace body 1, the corresponding surface of the fixed mounting block 75 on the outside of the mounting plate 6 is in contact with the outside of the vacuum furnace body 1. Then, the guide mounting block 73 is pushed vertically, allowing the guide mounting block 73 to slide in the guide connecting groove 72. The movable connecting sleeve 74 at the bottom of the guide mounting block 73 can be movably sleeved on the outside of the positioning threaded rod 76, and the positioning metal nut 77 is threadedly connected to the positioning threaded rod 76, so that the corresponding surface of the positioning metal nut 77 is in close contact with the movable connecting sleeve 74, which facilitates the fixing between the movable connecting sleeve 74 and the fixed mounting block 75, and improves the stability of the fixed connection between the mounting plate 6 and the vacuum furnace body 1.

[0033] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum furnace, comprising a vacuum furnace body (1), characterized in that, The vacuum furnace body (1) is provided with a preheating chamber (2) and a vacuum heating chamber (8) inside. A support mounting frame (3) is fixed on the outside of the vacuum furnace body (1). A conveyor belt body (4) is installed on the outside of the support mounting frame (3). A limit mechanism (5) is fixed on the outside of the support mounting frame (3). An installation plate (6) is provided on the outside of the vacuum furnace body (1). A stabilizing mechanism (7) is provided on the outside of the vacuum furnace body (1). The preheating chamber (2) is equipped with a vacuum pump (21) and an exhaust fan (22). The vacuum furnace body (1) is equipped with a hot air blower (23) located below the preheating chamber (2). The vacuum heating chamber (8) is fixedly installed with a lifting cylinder (81). The telescopic end of the lifting cylinder (81) is connected to the upper vacuum furnace assembly (83) through a floating joint (82). The upper end of the upper vacuum furnace assembly (83) is equipped with a vacuum joint (84). The vacuum joint (84) is connected to the vacuum pump (21). The lower vacuum furnace assembly (85) is matched with the upper vacuum furnace assembly (83) below the upper vacuum furnace assembly (83).

2. A vacuum furnace according to claim 1, characterized in that, The limiting mechanism (5) includes an L-shaped bracket (51), a support spring (52) is connected to one side of the L-shaped bracket (51), a movable plate (53) is connected to one end of the support spring (52), a guide thread rod (55) is fixed to the outside of the movable plate (53), a mounting handle rod (56) is fixed to one end of the guide thread rod (55), a limiting thread sleeve (57) is threaded to the outside of the guide thread rod (55), a limiting bracket (54) is fixed to the outside of the movable plate (53), the L-shaped bracket (51) and the support mounting bracket (3) are fixedly connected, and a connecting hole for accommodating the movement of the guide thread rod (55) is opened inside the L-shaped bracket (51).

3. A vacuum furnace according to claim 2, characterized in that, The L-shaped bracket (51) has a through hole inside, and the size of the through hole is adapted to the size of the limiting bracket (54).

4. A vacuum furnace according to claim 1, characterized in that, The stabilizing mechanism (7) includes a guide sleeve (71), the inside of which is provided with a guide connecting groove (72). The guide sleeve (71) is slidably connected to a guide mounting block (73) through the guide connecting groove (72). A movable connecting sleeve (74) is fixed to the outside of the guide mounting block (73). A fixed mounting block (75) is fixed to the top of the mounting plate (6). A positioning threaded rod (76) is fixed to the outside of the fixed mounting block (75). A positioning metal nut (77) is threaded to the outside of the positioning threaded rod (76).

5. A vacuum furnace according to claim 4, characterized in that, The guide sleeve (71) and the vacuum furnace body (1) are fixedly connected, and the outer side of the positioning metal nut (77) is provided with anti-slip texture.

6. A vacuum furnace according to claim 4, characterized in that, The movable connecting sleeve (74) has a groove inside, and the size of the groove is adapted to the size of the positioning threaded rod (76).

7. A vacuum furnace according to claim 1, characterized in that, The upper vacuum furnace assembly (83) is fixedly provided with a guide rod (86), which is slidably provided on the guide seat (87). The lower vacuum furnace assembly (85) is provided with a pressure relief assembly (88).

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