Mixing metering pump convenient to overhaul

The mixing metering pump convenient to overhaul comprises a main body pump and a bolt, the upper side of the main body pump is connected with a motor, the lower side of the main body pump is provided with a placement seat, a sliding groove is formed in the placement seat, the inner side of the sliding groove is connected with a bearing, a sliding block is arranged in the sliding groove, and the bearing is connected with the sliding block. And the bolts penetrate through the interiors of the sliding blocks and are connected with the inner sides of the bearings. According to the mixing metering pump convenient to overhaul, a bolt is rotated, a sliding block is driven to telescopically move when the bolt rotates, a movable plate is extruded inwards through inward movement of the sliding block, then a limiting pad is made of a rubber material, the metering pump is conveniently clamped and stabilized, a butt joint block is pressed, a suction cup is limited to the lower side of a placement base, and then through th