Turnover oil leakage preventing vent valve for fuel tank
A ventilation valve and anti-overturning technology, applied in the direction of fuel tank safety measures, lift valves, valve details, etc., can solve the problems of unsuitable small civil helicopter fuel systems, secondary fuel leakage, and failure to reset, so as to achieve good practical value and prevent Effects of fuel leakage and overall weight reduction
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[0023] The present invention will be further described in conjunction with the following examples.
[0024] See figure 1 The shown vent valve for preventing overturning and oil leakage of a fuel tank includes an intake end housing 1, an exhaust end housing 2, a guide seat 3, a cup body 4, a fork and a steel ball 5. The air end housing 1 is in communication with the atmosphere, and the exhaust end housing 2 is in communication with the fuel tank. The intake end housing 1 and the exhaust end housing 2 are screwed together by a threaded fit 6, and the cup body 4 is clamped between the intake end housing 1 and the exhaust end housing 2 through the ring plate 7. At least two first air inlet holes 8 are opened at the bottom. The guide seat 3 is fixed in the groove 10 of the intake end housing 1 through a retaining ring 9. The guide seat 3 is provided with a guide hole 11 and a second intake hole 12 located on both sides of the guide hole 11. A ring-shaped seal 13 extending into the c...
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