NOVELTY - Series of automatic extraction device comprises e.g. a pneumatic pump connected with a marsh gas pool gas board and a gas pipe. A water inlet end of the pneumatic pump and the marsh gas pool are connected mutually. The pneumatic pump comprises a pump body. The pump body is set with a mounting hole. The mounting hole is connected with a regulate and a control valve. The left portion and the right portion of the regulate and control valve are respectively connected with a baffle. The pump body is set between the side wall and outside wall of baffle.    USE - Used as automatic extraction device.    ADVANTAGE - The device producing the product is environmental friendly.    DETAILED DESCRIPTION - Series of automatic extraction device comprises a pneumatic pump connected with a marsh gas pool gas board and a gas pipe. A water inlet end of the pneumatic pump and the marsh gas pool are connected mutually. The pneumatic pump comprises a pump body. The pump body is set with a mounting hole. The mounting hole is connected with a regulate and a control valve. The left portion and the right portion of the regulate and control valve are respectively connected with a baffle. The pump body is set between the side wall and outside wall of baffle. An air cavity is set between the inner wall and side wall of the baffle. The air cavity and the discharge phase of the pump body are connected. The bottom portion of the pump body is connected with a liquid cavity through a three-way water inlet pipe. The upper portion of the pump body is connected with a liquid cavity through a three-way water outlet pipe. The pump body set with a water baffle ball. The baffle ball is set with a three-way water inlet pipe and three-way water outlet pipe that is connected to the liquid cavity, regulate valve and control valve. The regulate valve and control valve is set with a valve core and a sleeve. The sleeve is sleeved on the center of valve core. The upper end of the sleeve connected with a regulate and control shaft. The sleeve and a fixing sleeve are connected to the central portion of the valve core. The fixing sleeve is set with regulate and control shaft, central valve core and a vent. The two ends of regulate and control valve are respectively connected with a second valve core set. The regulate and control valve has a heave part. The heave part is located between the annular groove and inner side wall of sleeve forming an annular air inlet chamber. The left and right ends of the second valve core set is respectively connected with first valve core set. The first valve core set is connected with regulate and control shaft in the sliding position. The outer side wall of first valve core set and inner side wall of second valve core set are connected forming central discharge cavity. The first valve core set comprises a first-stage air hole. The first-stage air hole is connected with the discharge cavity. The sleeve, upper end internal of central core valve and left and right side of the wall are respectively set with a gas cavity. The central portion and the right end portion of the left valve core is set with a step cavity. The air passes through the in the left and right ends. The annular step of the second valve core, left chamber, right chamber, center valve core side, lower end of the second valve core and discharge cavity are mutually. The bottom of each gas chamber is set with three holes in the stepped cavity. The center core end of stepped cavity is connected to the drive end of the connecting shaft. The outer end is connected with a shaft. The shaft sleeve is connected inside the second sliding valve core. The number of second level air ports are connected to the air cavity. The distance between the regulate and control valve, central portion of second level shaft and two ends of heave part is equal. The outer wall of upper annular valve core is set with three annular grooves which is a bottom groove, a center groove and a discharge groove. The bottom and center groove is provided with multiple annular fixing sleeves. The air inlet hole of the upper end inner cavity and the discharge groove are mutually connected with the bottom groove. The bottom groove is provided with a discharge cavity. The discharge cavity is mutually connected with the discharge hole. The pump body is set with a air passage leading to the center groove. The pump body is set with a discharge passage leading outside. The terminal and the discharge passage leads to the discharge slot, where the discharge passage taken in the air and marsh gas pool and the water pressure is maintained by hydraulic connection of the pump periphery with the same specification of fermentation pool. The fermentation pool is located between water pressure regulator and the inlet pipe. A drain pipe is set with a feedstock inlet pipe and a discharge pipe. The left and right portion of the fermentation pool is set with a feeding port and a discharging port. The middle portion of the fermentation pool is set with a fermentation chamber. The fermentation chamber is respectively connected to a feeding port and discharging port. The fermentation pool is set with a air plate. A support device fixed inside the ferment pool. The top end, lower end and the periphery sealing comprises a gas feedstock port. The gas feedstock port is set on the side wall of the feedstock gas baffle plate. The gas discharge port is is set on the side wall of discharging plate. The upper surface and lower surface fermentation pool is set with air gap. A pull rod, a cross rod, a transverse rod and a vertical rod is located between the fermentation pool. The one end of the transverse rod is connected with the vertical rod. The vertical rod passes across the fermentation chamber forming gas storage. The upper side of fermentation pool is set with a feedstock with a drain pipe connected to the side portion of the first fermentation pool. The first fermentation pool is set in a discharging position. The first fermentation pool is set with a feedstock with a drain and the top part of first fermentation pool is set with an air plate. The air plate is set with a gas-guide tube.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of automatic extraction device.