Novel lifting check valve

The utility model relates to the technical field of lifting check valves, in particular to a novel lifting check valve which comprises a valve body, a valve cover, a valve rod and a valve clack, the valve clack is arranged below the valve rod, the valve rod and the valve clack are arranged in the valve body, the valve cover is arranged above the valve body for sealing, and trapezoidal grooves are symmetrically formed in the valve rod. And a trapezoidal block and a compression spring are arranged in the valve cover. When fluid pushes the valve clack upwards, the trapezoidal grooves push the trapezoidal blocks on the two sides to sink into the spring grooves, and when the fluid is reduced, the compression springs on the two sides push the trapezoidal blocks to drive the valve rod to move downwards, so that the valve clack and the valve body are sealed. The utility model has the advantages that firstly, the trapezoidal guide groove is arranged, so that the valve rod and the valve clack are prevented from rotatin