Rubber sealing plug for airtight test

Abstract

The invention discloses a rubber sealing plug for airtight test. The rubber sealing plug comprises a vertical outer sleeve pipe, conical tensioning sleeves are arranged at the upper end and the lowerend of the outer sleeve pipe, a plurality of cut grooves are arranged on each tensioning sleeve, the outer sleeve pipe is provided with an outer rubber sleeve in an inserted and sleeved manner, the upper inner wall and the lower inner wall of the outer rubber sleeve are pasted and fixed to the outer walls of the tensioning sleeves, the tensioning sleeve at the lower end of the outer sleeve pipe isinternally connected with a circular-truncated-cone-shaped downward pressing plate in an inserted manner, a vertical inner insert pipe is arranged at the middle of the downward pressing plate, the upper end of the inner insert pipe penetrates through a circular-truncated-cone-shaped upward pressing plate to be provided with a ring-shaped blocking ring, a threaded connection seat is arranged on the upper end surface of the blocking ring, the threaded connection seat is connected with an air pipe rapid connector in a screwed manner, the upward pressing plate presses against the inner wall of the tensioning sleeve at the upper end of the outer sleeve pipe, the part, on the upper side of the upward pressing plate, of the inner insert pipe is connected with a pressure spring in an inserted manner, two ends of the pressure spring press against the upward pressing plate and the blocking ring correspondingly, the inner insert pipe is fixedly provided with an inner rubber sleeve in an insertedand sleeved manner, and the outer wall of the inner rubber sleeve presses against the inner wall of the outer sleeve pipe. The rubber sealing plug for the airtight test can meet the airtight test ofa radiator under larger air pressure.

Description

Technical field: [0001] The invention relates to the technical field of rubber products, in particular to a rubber sealing plug for airtight testing. Background technique: [0002] At present, the radiators of general automobiles need to be tested for airtightness, that is, to inflate the inside of the radiator, keep the pressure for a period of time, and check whether the radiator is leaking; , it is necessary to block the nozzle of the water inlet pipe on the radiator and realize the ability to inflate. However, the existing sealing method uses a rubber plug to plug the water inlet pipe, and inserts an air inlet on the rubber plug. The trachea is sealed and can be used for air intake test; and the sealing structure of this structure can be used for testing with low air pressure. When the air pressure is high, the air pressure inside the radiator will easily push out the rubber plug, resulting in test failure. . Invention content: [0003] The purpose of the present inv...

AI Technical Summary

Problems solved by technology

[0002] At present, the radiators of general automobiles need to be tested for airtightness, that is, to inflate the inside of the radiator, keep the pressure for a period of time, and check whether the radiator is leaking; , it is necessary to block the nozzle of the water inlet pipe on the radiator and realize the ability to inflate. However, the existing sealing method u

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