High -pressure well drilling pump piston
The utility model provides a metal -cored not fragile, long service life's high -pressure well drilling pump piston, include metal pressure plate, buffer board, leather cup, protect root, metal -cored and cushion collar, wherein, metal -cored for falling " T " type structure, the cent...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model provides a metal -cored not fragile, long service life's high -pressure well drilling pump piston, include metal pressure plate, buffer board, leather cup, protect root, metal -cored and cushion collar, wherein, metal -cored for falling " T " type structure, the centre is equipped with the through -hole, the leather cup cladding is in the metal -cored outside, protect between piece crossbeam and leather cup that are fixed in metal -cored " T " type, metal pressure plate and buffer board centre all are equipped with the through -hole with metal -cored the same size, and metal pressure plate compresses tightly the buffer board on the leather cup and on metal -cored, and the leather cup closely cooperates with well drilling pump cylinder sleeve inner wall, and the metal -cored outer fixed surface of " T " type crossbeam has the cushion collar. The utility model discloses the change can be dismantled to the cushion collar, has lengthened metal -cored working life greatly. The utility model discl |
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