Vacuum compression bag gas nozzle with improved structure

Abstract

The invention discloses an improved structure of vacuum compressive bag air valve which comprises a valve seat, a sealing ring and an end cover. The valve seat comprises an inlet port and an outlet port and the sealing ring and the end cover are screwed at the outlet port respectively. The air valve is characterized in that the valve seat is constituted by an inner casing and an outer casing. The inner casing has an exhaust passage, the inlet end of the exhaust passage extends out of the outer casing bottom and forms the inlet port of the seat. The outlet port is arranged at the top opening of the outer casing. The inner wall of the exhaust passage is provided with a flow deflector which extends out of the inlet end of the exhaust passage which is also fixed with a ring. A piston packing is arranged at the outlet end of the exhaust passage of the inner casing and the piston packing is equipped with an inserted pivot with a drawing gear. The drawing gear of the inserted pivot passes through the ring and is blocked at the outside of the ring. The piston packing is arranged in the top part of the inner casing and seals the outlet end of the exhaust passage. The invention has the positive effects that such structure has good tightness, when air is exhausted, sufficient space is provided for air flow, thus bringing about satisfactory exhaust result.

Description

technical field [0001] The invention relates to an air nozzle for a vacuum compression bag, in particular to an air nozzle for a vacuum compression bag with an improved structure to improve the suction effect and sealing performance of the bag body. Background technique [0002] For areas with rainy seasons, the problem of storing heavy clothes and quilts has always troubled people. Vacuum compression bags are widely used because of their protective functions such as waterproof, mildew-proof, and moisture-proof; their structure is as follows: 200520005269.5; the name is "Vacuum Compression Bag Air Nozzle", the date of authorization announcement: April 5, 2006; the vacuum compression bag air nozzle includes a valve body and a soft plug, and the middle of the valve body has a suction hole. There are raised columns on the body, and the columns are distributed around the air extraction holes. There is also a movable film on the outside of the valve body. The collar on one side ...

AI Technical Summary

Problems solved by technology

But the vacuum compression bag gas mouth of this structure still has the following deficiencies: 1), the air extraction hole on the air nozzle body is mainly sealed by a movable film, and the movable film is to utilize the pressure difference between the inside and outside of the bag to be arranged on the air extraction hole On the other hand, if the bag after vacuuming encounters a large vibration external force, there will be a gap between the movable film and the air hole, which will cause the bag to leak air. Therefore, its sealing performance is poor, resulting in waterproof, mildew-proof and moisture-proof effects. Poor; 2) When pumping air, the gas in the bag is mainly drawn out through the suction hole by the force of the suction pump. The force of the gas on the side of the gas nozzle body suction hole is small; that is, when the gas nozzle body of this structure pumps air to the bag body, the gas pumping is uneven and the gas fluidity is poor, resulting in unsatisfactory pumping effect and affecting the preservation of clothes ; 3), the soft plug setting on the valve body, except that the sealing performance is relatively low, its operation is also inconvenient; moreover, the soft plug is used for a long time, and there is easy to exist between the soft plug mouth of the valve body and the soft plug. gap

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