NOVELTY - Pneumatic diaphragm pump slurry extraction comprises feeding the feedstock fermentation material into fermentation pool where the fermentation pool includes a sub fermentation pool and a number of e specification of same size fermenting to produce bio gas such that it is accumulated in storage plate of fermentation chamber in inner upper part of fermentation chamber in the sub ferment pool, the biogas and biogas slurry in the extrusion board accumulates out and the biogas liquid inside rises in the ferment pool.    USE - Used as pneumatic diaphragm pump slurry extraction method (claimed).    DETAILED DESCRIPTION - Pneumatic diaphragm pump slurry extraction comprises feeding the feedstock fermentation material into fermentation pool where the fermentation pool includes a sub fermentation pool and a number of e specification of same size, the fermentation raw material after fermentation producing bio gas is accumulated in storage plate of fermentation chamber in inner upper part of fermentation chamber in the sub ferment pool, the biogas and biogas slurry in the extrusion board accumulates out and the biogas liquid inside rises in the ferment pool, the fermentation pool sub aqueduct fermentation efficiency is high and the first sub ferment pool is connected to the discharge port and a multiple sub ferment pool and drain pipe for discharging fermentation efficiency of biogas slurry and in the subtask of biogas liquid in fermentation pool is connected to the first guide water pipe and the second water guide pipe is at the lowest point, the biogas slurry in fermentation pool inlet flows into water in pressure via the second one-way guide pipe, the biogas storage capacity is increased, regulator and control valve is fixed in the initial state for the center valve core fixing sleeve lower end is in the center position, regulator and control valve is fixedly set at end of center position, the left axis part of the regulator and the control valve blocks the third heave, the right heave part of the regulator and control shaft are blocked and the fourth air hole opens, the biogas passes through gas channel, enter into center groove and passes into multiple air inlet through the hole at center set at the groove bottom and enters into the air inlet chamber, the air inlet chamber of the annular groove and fixing sleeve inner cavity is provided with an upper end of regulator and control shaft and one end of the double end heave. The regulator and control shaft donot completely force balance in the state, the discharge passage in the discharge groove and left pump body are connected, the regulator and control shaft left end inner cavity open up in to the atmosphere, the regulator and the control axial moves left to the discharging regulator and control shaft left end is opened to the air and the regulator and the control axial left end moves, the air inlet chamber is set between fixing sleeve upper end and fixing sleeve lower end of the third air hole,the regulator and control shaft right end in the air increases, the regulator and the control shaft right end inner cavity is set between fixing sleeve and fixing sleeve upper end lower end of the fourth air hole. At the same time, the air inlet chamber through the third air hole and lower end fixedly sleeved in slide annular left air in the center valve core left end outer side wall of sleeve joint, the biogas entering into left air cavity and left air cavity and center valve core via fifth holes, the center valve core left end of the second left end valve core inner core left end step in center inside and form left chamber, biogas enters into left cavity, the center to right moving process of the valve core and driving connected to the left shaft and moving the right connection shaft, connected with left right moving process in axial direction, driving the left piston to the right. The left piston and the sealing chamber is separated by a left diaphragm piece to decrease pressure, the left diaphragm chip shrink deformation, and left air cavity volume between center body left liquid in volume between the left diaphragm piece and the pump body increases, the left inner side wall is set with piston in pump body in the lower end, the left air cavity, discharge channel phase and the left air cavity in the air volume decrease is same discharge passage discharging, and reaching to the pump body left side to absorb liquid and reach the target, the right shift and right piston and right diaphragm piece stretching deformation, the membrane piece and right pump body between right liquid decrease in volume, the right inner side wall is set with piston in pump body in the center body between the right air cavity volume increases. The left piston drive regulator and control axial right move to the fourth air hole position regulate and control shaft left end heave blocking the third air hole and regulate and control shaft right end heave block position, the third air hole and the fourth air hole are blocked, the regulator and control shaft left end and left piston are stopped, and the air pressure in air inlet chamber is larger than regulator and control shaft right end pressure, the regulator and control shaft at low gas pressure action moves to the right, the regulator and control of axial right moves, the pump body right side reach to absorb target liquid, the right to left moving process of piston, regulator and control shaft right end meets the drive and regulator and control axial left moves, the left gas chamber completely discharges, the regulate and control left end heave and shaft seal the third air vent, regulator and control shaft right end sealing the fourth air hole, a similar way, the third air hole and blocking of the fourth air hole, regulator and control shaft right end and right piston seat, the air pressure in air inlet chamber larger than regulator and control shaft left end pressure, the regulate and control shaft make at low gas pressure action to move left.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of pneumatic diaphragm pump.