One-way charging valve
The utility model relates to a one-way charging valve. One end of a three-way type valve body is connected with a liquid nitrogen tank, a choke plug is arranged at a corresponding tail end, the choke plug is fixed on the three-way type valve body, the other through hole is connected with an inner li...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to a one-way charging valve. One end of a three-way type valve body is connected with a liquid nitrogen tank, a choke plug is arranged at a corresponding tail end, the choke plug is fixed on the three-way type valve body, the other through hole is connected with an inner liquid storage tank, a thimble type valve core is arranged in the inner through hole which is connected with the liquid nitrogen tank, the front end of the thimble type valve core is a counter bored hole, the tail end of the thimble type valve core is a sealing head, a lateral through hole is formed in front of the sealing head and communicated with the counter bored hole, a matched conical surface or a first spherical surface is arranged on the contact portion of the sealing head and the inner through hole of the valve body, the back portion of the sealing head corresponds to the choke plug through a spring of a hole at the tail end, and a sealing pad is arranged between the choke plug and the valve body. The thimbl |
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