Vacuum control valve

A vacuum control valve is disclosed by the utility model, which comprises a standing valve 1 and mobile valve 2 and a shaft 3 that is through the standing valve 1 and the mobile valve 2. A chamber 11 is arranged in the standing valve 1 and another chamber 21 is provided in the mobile valve 2. Both ends of the shaft 3 are in the chamber 11 and the chamber 21 respectively. A piston 4 is provided on the shaft end 31 in the chamber 11 and divides the chamber 11 into a chamber 111 and a chamber 112. Each of the chambers 111 and 112 is provided with a venthole 1111 and 1121, respectively. An axle hole 12 is provided on the standing valve 1 and another axle hole 22 is provided on the mobile valve 2, a cylinder-shaped salient 23 is formed outwards along the axle hole 22 on the mobile valve 2. The cylinder-shaped salient 23 can be inserted in the axle hole 12 of the standing valve 1 and form a seal point in the axle hole 12. The chamber 21 is provided with an opening 211 and an opening 212. A sealplate 5 is arranged on the shaft end in the chamber 21 and can close the opening 212. The vacuum control valve is not only applicable for providing vacuum for a fixed vacuum solid, but also provides vacuum for a mobile vacuum solid.