Removable blocking means emery board

The invention discloses a detachable sand blocking plate device which comprises a sand blocking plate, a rotating device and a fixing device, wherein the rotating device is installed on a bulkhead plate, the fixing plate is installed below the sand blocking plate, the fixing plate is connected with the rotating device through a first bearing, and the sand blocking plate is installed on the bulkhead plate through the fixing device. The detachable sand blocking plate device disclosed by the invention is simple in structure and convenient to operate, and the installation height can be freely adjusted, thereby improving the economic benefit of a ship owner and ensuring the safety in sand loading and operating processes. The detachable sand blocking plate device which is mainly composed of the sand blocking plate, the rotating device and the fixing device can be operated by any sailor, and the length of a worm shaft in the rotating device can be freely adjusted so as to effectively reduce the loading and unloading speed and reduce the working period.