Suction pumps are devices that remove air from an enclosed space. Suction pump is divided into electric suction pump, manual suction pump, foot pump and so on. Electric suction pump Electric-powered suction pump, constantly compressed air through the electricity, resulting in pressure. Electric industrial vortex pump (Figure 1) Electric household suction pump (Figure 2) Manual suction pump Hand-powered suction pump, by hand constantly compressed air, resulting in pressure. Manual suction pump (Figure 3) Foot suction pump Foot-powered suction pump, through the foot pressure non-stop compressed air, resulting in pressure to work. Foot pump (Figure 4) Pump principle: the use of motor circular motion or reciprocation of human (hands and feet), driven machinery to reciprocate the diaphragm within the pump to move the fixed volume of the pump chamber air Compression, stretching to form a vacuum (negative pressure), the pressure difference between the pump suction port and the outside atmospheric pressure, under the pressure difference, the gas pressure (suction) into the pump chamber, and then discharged from the exhaust port. Vacuum compression bag suction pump use vacuum compression bag suction pump operation Figure 1 (Figure) Vacuum compression bag suction pump operation Figure 2 (Figure)
