Vacuum packaging equipment of vacuum electronic tube

Abstract

The utility model relates to the technical field of vacuum electronic tubes, in particular to a vacuum packaging device of a vacuum electronic tube, which comprises a working table, a vacuumizing tube arranged at the top of the working table, a plurality of first L-shaped gas-guide tubes arranged on the outer wall of the vacuumizing tube, a vacuum butt-joint tube arranged at the top ends of the first L-shaped gas-guide tubes, and a plurality of quick cooling pieces arranged at the top of the working table. The rapid cooling part comprises a circular base, two supporting rods are arranged at the top of the circular base, the top ends of the two supporting rods are jointly connected with an annular gas guide pipe, the top end of the first L-shaped gas guide pipe penetrates through the annular gas guide pipe, and a plurality of gas outlet inclined pipes are arranged at the top of the annular gas guide pipe. According to the vacuum packaging equipment of the vacuum electronic tube, long-time waiting needed by a traditional natural cooling mode is avoided by introducing the rapid cooling piece, the rapid cooling piece can rapidly cool a fusion welding part immediately after fusion welding is completed, the waiting time in the production process is greatly shortened, and the efficiency of a production line and the overall output are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum electron tube technical field, concretely is vacuum electron tube's vacuum packaging equipment. BACKGROUND

[0002] Vacuum electron tube is a kind of key electronic assembly to realize signal amplification, rectification and switching function by the characteristics of electron free movement in vacuum.Although many application fields have been occupied by solid-state devices such as transistor, but in some high-frequency, high-power professional fields, vacuum electron tube is still irreplaceable, such as in microwave communication, radar and some professional broadcast equipment.It can handle higher power, and has excellent high-temperature resistance and wide frequency band response.

[0003] In the manufacturing process of vacuum electron tube, vacuum packaging is the core step to ensure its performance.During the packaging process, the pressure in the tube needs to be reduced to a very low level, so that electrons can move in an environment without gas molecule interference, thereby ensuring the service life and performance stability of the equipment.The traditional vacuum packaging equipment usually involves complex and delicate operations in this process.

[0004] In the vacuum packaging process, a key link is to connect the vacuum glass tube's evacuation tube to the evacuation interface of the vacuum equipment through fusion operation.The operation steps include:

[0005] 1.Positioning and alignment: accurately align the evacuation tube and the evacuation nozzle to create conditions for fusion.

[0006] 2.Fusion operation: use heating device to heat the contact point to a molten state to achieve high-strength sealing.

[0007] 3.Cooling stage: after fusion, the fusion part must be cooled to make the connection reach the necessary physical strength.This cooling usually depends on natural conditions, and takes several minutes to tens of minutes.

[0008] This natural cooling time directly affects the efficiency of the production line.For example, assuming that each cooling takes an average of 10 minutes, in mass production, this significantly slows down the overall pace.

[0009] Therefore, improving the efficiency and reliability of the vacuum packaging process, especially in the cooling link, is a key problem to be solved in the manufacturing industry, and in view of this, we propose a vacuum electron tube vacuum packaging equipment. UTILITY MODEL CONTENT

[0010] The utility model aims at providing vacuum electron tube's vacuum packaging equipment to solve the problems raised in the above background technology.

[0011] To achieve the above purpose, the utility model provides the following technical scheme:

[0012] A vacuum packaging device for a vacuum electron tube includes a workbench, brackets provided on both left and right sides of the bottom of the workbench, a vacuum tube provided on the top of the workbench, a plurality of first L-shaped air guide tubes equidistantly arranged on both the front and rear sides of the outer wall of the vacuum tube, a detachable vacuum docking tube provided at the top end of the first L-shaped air guide tube, the vacuum tube and the vacuum docking tube being welded and cooled, the vacuum tube being vacuumed, and the first L-shaped air guide tubes cooperating with the vacuum docking tube to connect the vacuum tube and the vacuum tube, thereby extracting air from the vacuum tube;

[0013] The top of the workbench is also provided with a plurality of rapid cooling parts, each of which includes a circular base, and two support rods arranged symmetrically on the top of the circular base, the top ends of the two support rods are commonly connected to an annular air duct, the top end of the first L-shaped air duct passes through the annular air duct, and the annular air duct is close to the bottom of the vacuum butt joint. The top of the annular air duct is provided with a plurality of air outlet oblique pipes arranged in a circular array, and the output end of the air outlet oblique pipe is directed toward the weld of the vacuum electron tube and the vacuum butt joint, so that a cold air flow can be blown toward the weld, thereby quickly cooling the weld, thereby improving the efficiency of the vacuum operation;

[0014] An air intake riser is provided at the bottom of the annular air duct, and the bottom end of the air intake riser passes through the circular base and the top of the workbench in sequence. A control valve is provided on the air intake riser, and an air supply pipe is provided at the bottom of the workbench. A plurality of second L-shaped air ducts equidistantly arranged on the left and right sides are provided on the front and rear sides of the outer wall of the air supply pipe. The plurality of air intake risers are respectively connected to the plurality of second L-shaped air ducts, and the air supply pipes introduce the cold air flow into the plurality of second L-shaped air ducts respectively, and then enter the air intake riser from the second L-shaped air ducts. The closing of the air intake riser is controlled as needed, and the air intake riser of the rapid cooling component corresponding to the unused vacuum docking tube needs to be closed. The air intake riser introduces the cold air flow into the annular air duct, and finally outputs it from the plurality of oblique air outlet pipes.

[0015] Preferably, a plurality of first connecting frames are provided on the outer wall of the vacuum tube, and the bottom ends of the first connecting frames are fixedly connected to the top of the workbench to fix the position of the vacuum tube.

[0016] Preferably, a vacuum external tube is provided at the right end of the vacuum tube, which is connected to an external vacuum equipment, such as a vacuum pump. A first solenoid valve is provided on the vacuum external tube. After the vacuum is completed, the vacuum external tube is closed, effectively preventing air from entering when the staff fuses the vacuum tube of the vacuum electron tube.

[0017] Preferably, a sealing sleeve is provided on the outer wall of the vacuum docking tube, and the sealing sleeve is arranged on the top end of the first L-shaped air duct. The outer wall of the first L-shaped air duct fits with the inner wall of the sealing sleeve, and the bottom end of the vacuum docking tube is inserted into the first L-shaped air duct to ensure the sealing of the connection between the vacuum docking tube and the first L-shaped air duct.

[0018] Preferably, a rubber ring is embedded in the bottom of the inner wall of the sealing sleeve, and the inner wall of the rubber ring is tightly fitted with the outer wall of the first L-shaped air duct, thereby further improving the sealing effect.

[0019] Preferably, a plurality of mounting holes are provided on the top of the circular base and near the outer edge, and bolts are connected in the mounting holes. The bolts are threadedly connected to the top of the workbench to facilitate the disassembly and assembly of the rapid cooling parts.

[0020] Preferably, a plurality of second connecting frames are provided on the outer wall of the gas pipe, and the top ends of the second connecting frames are fixedly connected to the bottom of the workbench to fix the position of the gas pipe.

[0021] Preferably, an external air intake pipe is provided at the right end of the air supply pipe, which is externally connected to a cold air flow generating device to input cold air flow into the air supply pipe. A second solenoid valve is provided on the external air intake pipe to facilitate staff to control the switch of the external air intake pipe.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The vacuum packaging equipment for vacuum electron tubes avoids the long waiting time required by traditional natural cooling methods by introducing rapid cooling components. The rapid cooling components can quickly cool the welded parts immediately after welding is completed, greatly shortening the waiting time in the production process and significantly improving the efficiency and overall output of the production line.

[0024] 2. The vacuum packaging equipment for the vacuum electron tube has a sealing sleeve on the outer wall of the vacuum butt joint tube and a rubber ring embedded in the bottom. This design ensures good sealing between the first L-shaped air guide tube and the vacuum butt joint tube, greatly reducing the possibility of air leakage, and can provide a more stable vacuum environment for the vacuum electron tube, thereby improving product performance and extending service life.

[0025] 3. The vacuum packaging equipment of the vacuum electron tube is designed with mounting holes and bolt connections to facilitate the removal and installation of rapid cooling parts, making the maintenance of the equipment simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first perspective;

[0027] Figure 2This is a schematic diagram of the overall structure of the utility model from a second perspective;

[0028] Figure 3 This is one of the partial structural diagrams of the utility model;

[0029] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the assembly structure of the first L-shaped air guide tube and the vacuum docking tube in the present invention;

[0031] Figure 6 This is a schematic diagram of the assembly structure of the gas delivery pipe and the second L-shaped gas guide pipe in the present invention;

[0032] In the figure: 1. Workbench; 10. Bracket; 2. Vacuum tube; 20. Vacuum external tube; 21. First solenoid valve; 22. First connecting frame; 3. First L-shaped air duct; 4. Vacuum docking tube; 40. Sealing sleeve; 41. Rubber ring; 5. Rapid cooling part; 50. Round base; 500. Mounting hole; 51. Support rod; 52. Annular air duct; 53. Air inlet vertical pipe; 54. Control valve; 55. Air outlet inclined pipe; 56. Bolt; 6. Air supply pipe; 60. Air inlet external tube; 61. Second solenoid valve; 62. Second connecting frame; 7. Second L-shaped air duct. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] See also Figures 1-6 , the utility model provides a technical solution:

[0036] The vacuum packaging equipment for a vacuum electron tube includes a workbench 1. Brackets 10 are provided on both left and right sides of the bottom of the workbench 1. A vacuum tube 2 is provided on the top of the workbench 1. A plurality of first L-shaped air guide tubes 3 are provided on both front and rear sides of the outer wall of the vacuum tube 2 and are arranged equidistantly from left to right. A detachable vacuum docking tube 4 is provided at the top of the first L-shaped air guide tube 3. After the vacuum tube's vacuum tube and the vacuum docking tube 4 are welded and cooled, the vacuum tube 2 is vacuumed. The first L-shaped air guide tubes 3 cooperate with the vacuum docking tube 4 to connect the vacuum tube and the vacuum tube 2, thereby extracting air from the vacuum tube.

[0037] The top of the workbench 1 is also provided with a plurality of rapid cooling parts 5, which include a circular base 50. The top of the circular base 50 is provided with two support rods 51 arranged symmetrically on the left and right. The top ends of the two support rods 51 are commonly connected to an annular air duct 52. The top end of the first L-shaped air duct 3 passes through the annular air duct 52, and the annular air duct 52 is close to the bottom of the vacuum butt joint 4. The top of the annular air duct 52 is provided with a plurality of air outlet inclined pipes 55 arranged in a circular array. The output end of the air outlet inclined pipe 55 is directed toward the weld joint of the vacuum electron tube and the vacuum butt joint 4, so that the cold air flow can be blown toward the weld joint, thereby quickly cooling the weld joint and improving the efficiency of the vacuum operation.

[0038] An air intake riser 53 is provided at the bottom of the annular air duct 52, and the bottom end of the air intake riser 53 passes through the circular base 50 and the top of the workbench 1 in sequence. A control valve 54 is provided on the air intake riser 53, and an air supply pipe 6 is provided at the bottom of the workbench 1. A plurality of second L-shaped air ducts 7 equidistantly arranged on the left and right sides are provided on the front and rear sides of the outer wall of the air supply pipe 6. The plurality of air intake risers 53 are respectively connected to the plurality of second L-shaped air ducts 7. The air supply pipe 6 introduces the cold air flow into the plurality of second L-shaped air ducts 7, and then enters the air intake riser 53 from the second L-shaped air ducts 7. The closing of the air intake riser 53 is controlled as needed. The air intake riser 53 of the rapid cooling component 5 corresponding to the unused vacuum docking tube 4 needs to be closed. The air intake riser 53 introduces the cold air flow into the annular air duct 52, and finally outputs it from the plurality of air outlet oblique pipes 55.

[0039] In this embodiment, a plurality of first connecting frames 22 are provided on the outer wall of the vacuum tube 2 , and the bottom ends of the first connecting frames 22 are fixedly connected to the top of the workbench 1 , so that the position of the vacuum tube 2 is fixed.

[0040] Specifically, a vacuum external tube 20 is provided at the right end of the vacuum tube 2, which is connected to an external vacuum device, such as a vacuum pump. A first solenoid valve 21 is provided on the vacuum external tube 20. After the vacuum is completed, the vacuum external tube 20 is closed to effectively prevent air from entering when the staff fuses the vacuum tube of the vacuum electron tube.

[0041] Furthermore, a sealing sleeve 40 is provided on the outer wall of the vacuum docking tube 4, which is sleeved on the top of the first L-shaped air duct 3. The outer wall of the first L-shaped air duct 3 fits with the inner wall of the sealing sleeve 40, and the bottom end of the vacuum docking tube 4 is inserted into the first L-shaped air duct 3. The vacuum docking tube 4 is a consumable part. After replacement, the sealing of the connection between the vacuum docking tube 4 and the first L-shaped air duct 3 is ensured.

[0042] Furthermore, a rubber ring 41 is embedded in the bottom of the inner wall of the sealing sleeve 40 , and the inner wall of the rubber ring 41 is tightly fitted with the outer wall of the first L-shaped air duct 3 , further improving the sealing effect.

[0043] Furthermore, a plurality of mounting holes 500 are provided on the top of the circular base 50 and near the outer edge. Bolts 56 are connected in the mounting holes 500. The bolts 56 are threadedly connected to the top of the workbench 1 to facilitate the disassembly and assembly of the rapid cooling part 5.

[0044] Furthermore, a plurality of second connecting frames 62 are provided on the outer wall of the gas pipe 6 , and the top ends of the second connecting frames 62 are fixedly connected to the bottom of the workbench 1 , so that the position of the gas pipe 6 is fixed.

[0045] Furthermore, an external air intake pipe 60 is provided at the right end of the air supply pipe 6, which is connected to an external cold air flow generating device to input cold air flow into the air supply pipe 6. A second solenoid valve 61 is provided on the external air intake pipe 60 to facilitate the staff to control the switch of the external air intake pipe 60.

[0046] When the vacuum packaging equipment of the vacuum electron tube of this embodiment is used, the vacuum tube's exhaust pipe is aligned with the vacuum docking tube 4, and the heating device is activated to heat the contact portion of the exhaust pipe and the vacuum docking tube 4 to a molten state, completing high-strength welding. After ensuring welding is completed, the rapid cooling component 5 is activated, and the inflow of cold air is regulated by the control valve 54. During this process, the cold air is guided to the annular air guide pipe 52 through the air inlet vertical pipe 53. The cold air is blown toward the welding point from the air outlet inclined pipe 55 of the annular air guide pipe 52, quickly reducing the temperature of the welding area, accelerating the cooling process, and providing conditions for subsequent vacuuming operations. After cooling is completed, the vacuuming equipment is activated to evacuate the air inside the vacuum tube through the vacuum tube 2 to ensure that the required vacuum level is achieved to ensure its performance stability. The first solenoid valve 21 of the vacuum external pipe 20 is closed to prevent gas backflow during subsequent operations or packaging processes.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum packaging device for a vacuum electron tube, comprising a workbench (1), wherein brackets (10) are provided on both left and right sides of the bottom of the workbench (1), and characterized in that: The top of the workbench (1) is provided with a vacuum tube (2), and the front and rear sides of the outer wall of the vacuum tube (2) are provided with a plurality of first L-shaped air guide tubes (3) arranged at equal distances from each other. The top of the first L-shaped air guide tube (3) is provided with a detachable vacuum docking tube (4). The top of the workbench (1) is also provided with a plurality of rapid cooling parts (5), and the rapid cooling parts (5) include a circular base (50). The top of the circular base (50) is provided with two support rods (51) arranged symmetrically from left to right. The tops of the two support rods (51) are commonly connected to an annular air guide tube (52). The top of the first L-shaped air guide tube (3) passes through the annular air guide tube (52). The top of (52) is provided with a plurality of air outlet oblique pipes (55) arranged in a circular array, the output end of the air outlet oblique pipe (55) faces the fusion joint between the vacuum electron tube and the vacuum butt pipe (4), the bottom of the circular air guide pipe (52) is provided with an air intake vertical pipe (53), the bottom end of the air intake vertical pipe (53) passes through the circular base (50) and the top of the workbench (1) in sequence, the air intake vertical pipe (53) is provided with a control valve (54), the bottom of the workbench (1) is provided with an air supply pipe (6), the front and rear sides of the outer wall of the air supply pipe (6) are provided with a plurality of second L-shaped air guide pipes (7) arranged at equal distances from each other, and the plurality of air intake vertical pipes (53) are respectively connected to the plurality of second L-shaped air guide pipes (7).

2. The vacuum packaging device for a vacuum electron tube according to claim 1, characterized in that: The outer wall of the vacuum tube (2) is provided with a plurality of first connecting frames (22), and the bottom ends of the first connecting frames (22) are fixedly connected to the top of the workbench (1).

3. The vacuum packaging device for a vacuum electron tube according to claim 1, wherein: A vacuum external pipe (20) is provided at the right end of the vacuum pumping pipe (2), and a first electromagnetic valve (21) is provided on the vacuum external pipe (20).

4. The vacuum packaging device for a vacuum electron tube according to claim 1, wherein: The outer wall of the vacuum butt joint tube (4) is provided with a sealing sleeve (40), the sealing sleeve (40) is sleeved on the top end of the first L-shaped air duct (3), the outer wall of the first L-shaped air duct (3) is in contact with the inner wall of the sealing sleeve (40), and the bottom end of the vacuum butt joint tube (4) is inserted into the first L-shaped air duct (3).

5. The vacuum packaging device for a vacuum electron tube according to claim 4, characterized in that: A rubber ring (41) is embedded at the bottom of the inner wall of the sealing sleeve (40), and the inner wall of the rubber ring (41) is tightly fitted with the outer wall of the first L-shaped air guide tube (3).

6. The vacuum packaging device for a vacuum electron tube according to claim 1, wherein: A plurality of mounting holes (500) are provided at the top of the circular base (50) and near the outer edge thereof. Bolts (56) are connected in the mounting holes (500), and the bolts (56) are threadedly connected to the top of the workbench (1).

7. The vacuum packaging device for a vacuum electron tube according to claim 1, wherein: The outer wall of the gas delivery pipe (6) is provided with a plurality of second connecting frames (62), and the top ends of the second connecting frames (62) are fixedly connected to the bottom of the workbench (1).

8. The vacuum packaging device for a vacuum electron tube according to claim 1, wherein: An external air intake pipe (60) is provided at the right end of the air delivery pipe (6), and a second solenoid valve (61) is provided on the external air intake pipe (60).

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