Piston structure of dual-way hand-pulling inflation pump and inflation method of piston structure
A technology for air pumps and pistons, which is applied to pumps, pump components, variable capacity pump components, etc. It can solve the problems of high production cost and material cost, cumbersome production and assembly, and many accessories, and achieve stable and reliable two-way air intake, The effect of low cost and simple ventilation structure
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[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific working process, but it is not a limitation to the protection scope of the present invention.
[0036] Such as Figure 1-7 As shown, the piston of the two-way hand pump mainly includes: a piston main body 1, an upper valve cover 2, a lower valve cover 20, a sealing cover 3, and a sealing ring 4.
[0037] In the middle of the piston main body 1 in the axial direction, there is an outer hole 9 connected with the outer pipe of the air pump and an inner hole 8 mated with the inner pipe of the air pump. The upper surface of the piston main body 1 has an upper valve port 13, and the upper valve cover 2 is installed On the upper part of the upper valve port 13; the lower surface of the piston main body 1 has a lower valve port 12 in the same side direction, and the lower valve cover 20 is installed at the lower part of the lower valve port 12; the outer ci...
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