NOVELTY - A dry pig manure acidizing apparatus comprises a hydrolysis and acidification reactor, a stirring and acid extruding mechanism, a hot water circular heat transfer system, an acid liquid collecting and allocating system and an acidizing tank angle adjusting mechanism. The stirring and acid extruding mechanism comprises a cylindrical acidizing tank that has a heat preservation layer, and both ends of the acidizing tank are provided with flange disks. The top of one end of the acidizing tank is formed with a feeding bucket with a sealing cover.    USE - Apparatus for acidizing dry pig manure with high solid content (claimed).    DETAILED DESCRIPTION - A dry pig manure acidizing apparatus comprises a hydrolysis and acidification reactor, a stirring and acid extruding mechanism, a hot water circular heat transfer system, an acid liquid collecting and allocating system and an acidizing tank angle adjusting mechanism. The stirring and acid extruding mechanism comprises a cylindrical acidizing tank that has a heat preservation layer, and both ends of the acidizing tank are provided with flange disks. The top of one end of the acidizing tank is formed with a feeding bucket with a sealing cover, and the bottom is formed with a residual discharge pipe with a switch valve. The straight cylindrical pipe of the feeding bucket is provided with a biogas backflow pipe. The top of the other end of the acidizing tank is provided with a gas discharge pipe, and the flange disks at the ends are respectively provided with an acid discharge opening. The stirring and acid extruding mechanism comprises a hollow rotation shaft that passes through the acidizing tank and is supported on the flange disks at both ends of the acidizing tank by bearings. Both ends of the hollow rotation shaft are sealed. The hollow rotation shaft close to one end of the feeding bucket is connected with a moving joint, and the other end of the hollow rotation shaft is connected with a decelerating motor with a timing controller. Multiple connection pipes with the other end of each to be sealed are arranged on the hollow rotation shaft at intervals, and the connection pipes are staggered in vertical direction. A band-shaped stirring piece is arranged between each two the adjacent connection pipes. The hot water circular heat transfer system comprises a water through pipe supported in the hollow rotation shaft via multiple fixing rods. The water inlet end of the water through pipe is arranged in the hollow rotation shaft, and the water outlet end passes out of the hollow rotation shaft to be arranged in the moving joint. The moving joint is sleeved in a fixed joint via a bearing, and two circles of annular water ways are arranged in the fixed joint at intervals. The fixed joint and the moving joint are respectively provided with a water inlet pipe that communicates with one of the annular water ways and a water outlet pipe that communicates with the other one of the annular water ways. The water inlet pipe of the moving joint communicates with the hollow rotation shaft, and the water outlet pipe communicates with the water through pipe. The acid liquid collecting and allocating system comprises an acid discharge pipe that is arranged on the acid discharge opening and has a switch valve, and the other end of the acid discharge pipe passes into an acid liquid collecting tank. A motor is arranged at the top of the acid liquid collecting tank. The output end of the motor is connected with a stirring shaft in the acid liquid collecting tank, and multiple stirring vanes are arranged at the lower part of the stirring shaft. A biogas backflow pipe is arranged at the top of the acid liquid collecting tank, a pH electrode is also arranged on the tank body of the acid liquid collecting tank, and a liquid outlet pipe with a switch valve is arranged at the lower part of the acid liquid collecting tank. The acidizing tank angle adjusting mechanism comprises an engine frame, and two screw nuts are arranged on the engine frame at intervals. Each of the screw nuts is connected with a screw rod. One end of each of the two screw rods is connected with an adjusting hand wheel, and the other end of each is contacted with a support block. Two of the support blocks are fixed at the bottoms of both ends of the acidizing tank, and both sides of the acidizing tank are respectively supported on the engine frame via a spindle nose. An INDEPENDENT CLAIM is included for acidizing method.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic perspective view of the acidizing apparatus.