High-sealing-performance vacuumizing device

Abstract

The invention discloses a high-sealing-performance vacuumizing device. The vacuumizing device comprises a main vacuum pipeline, one end of the main vacuum pipeline is concentrically provided with a cone-shaped body used for communicating with an end to be vacuumized, and the end, provided with the cone-shaped body, of the main vacuum pipeline is concentrically sleeved with a nut. A sliding guide mechanism used for enabling the cone-shaped body to move in the axis direction of the main vacuum pipeline in a vacuum environment and a driving mechanism used for driving a movable part of the sliding guide mechanism to move back and forth are arranged in the main vacuum pipeline. A partition plate used for blocking the main vacuum pipeline so as to form a vacuum cavity during vacuumizing is arranged between the sliding guide mechanism and the driving mechanism. The driving mechanism drives the sliding guide mechanism to move in the vacuum cavity through repulsion and attraction between magnets, and a communicating pipeline communicating with an external vacuum pump is arranged on the vacuum cavity. According to the high-sealing-performance vacuumizing device, the principle of attraction and repulsion of magnetic poles is utilized, operation and control of the cone-shaped body in a closed space are achieved, air leakage is avoided during disassembly after vacuumizing is completed, the sealing performance is good, and the vacuumizing quality is improved.

Description

technical field [0001] The invention relates to the technical field of vacuuming equipment, in particular to a high-tightness vacuuming device. Background technique [0002] The air conditioner needs to be vacuumed before injecting refrigerant. The existing vacuum device relies on turning the nut to connect the device with the connection port of the external unit of the air conditioner. The thimble of the air conditioner is jacked up inward, and the external unit of the air conditioner is connected with the vacuuming device for vacuuming operation; after the vacuuming is completed, the nut is loosened and disassembled; however, during the disassembly process, the disassembly is performed continuously due to the rotation of the nut Yes, during the disassembly process, the cone gradually withdraws from the interface of the air conditioner external unit. Before it completely exits, the external air will enter the air conditioner external unit through the loosened nut, so the mo...

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Problems solved by technology

[0002]The air conditioner needs to be vacuumed before the refrigerant is injected. The existing vacuum device relies on turning the nut to connect the device with the connection port of the air conditioner external unit. During the process, the conical body fixed at the end of the device pushes the thimble at the air conditioner interface inward, connects the air conditioner external unit with the vacuuming device, and performs vacuuming operation; after the vacuuming is completed, loosen the nut to disassemble; However, during the disassembly process, since the disassembly of the screw nut is continuous, during the disassembly process, the cone gradually withdraws from the interface of the external unit of the air conditioner. Before it completely exits, the external air will enter the air conditioner through the loosened nut. In the external machine, air leakage will occur when the nut is loosened after vacuuming, and the absolute vacuuming task cannot be completed, which will affect the quality of work

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