| 摘要 |
An air pressure pump with no vibration for high consistency is provided to realize continuous pumping of liquid phase materials with a high discharge pressure but not generating serious noise by supplying high pressure air to right and left pneumatic chambers in a cylinder from an air compressor alternately. An air pressure pump with no vibration for high consistency includes a valve unit for controlling introduction and discharge of liquid phase materials, and having a branch type body connected with inlet and outlet pipes and mounted with check valves to be opened in the outlet pipe direction. A pneumatic unit(3) generates driving sources for introducing or discharging the liquid phase materials with air supplied from an air compressor. In the pneumatic unit, right and left pneumatic chambers(12,11) are formed in a cylinder(10) and pistons(14,13) are inserted in the chambers to be connected to a piston rod(15). Each spring(16) is provided to the pistons for reducing pulsation and improving reciprocation speed. Disc type pushers(23,22) are slidably mounted in the pistons via springs(20,21) having different spring coefficients. The pushers selective push valve rods mounted on barrier walls(25,24), wherein the valve rods open or close valve holes of the barrier walls and the valve holes are connected to an orifice(30). A connection pipe(31) connects the pneumatic chambers to each other. The valve holes are provided with air inlet and outlet pipes, wherein the air inlet pipe(32) is mounted with a valve for pumping speed control.
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