Vacuum packaging machine the difference between different pumps
Vacuum packaging machine the difference between different pumps. The key part of vacuum packing machine is vacuum pump. Stainless steel centrifugal pump, also known as beverage pump, sanitary pump, milk pump, etc., is one of the widely used transport equipment in food factory. Like general centrifugal pump, the main working part of the pump is the wing wheel, the wing wheel has a certain number of fins above, where in contact with liquid parts, all made of stainless steel, to ensure sanitary conditions.
Vacuum packaging machine the difference between different pumps. Working principle: before starting, fill the pump shell with the liquid to be transferred. Start, rotary pump shaft to drive the impeller and blade between the liquid with the impeller rotation, in under the action of centrifugal force, the liquid along the blade between the channel from the impeller inlet is flung to the outside of the impeller, at high speed into the pump casing, liquid flow to the volute channel, due to the cross section of expanded gradually, most of the kinetic energy into static pressure can, so the liquid with high pressure, pressure from the export into the pressure tube, conveying to the desired location. Vacuum packaging machine price according to the vacuum pump configuration, price is not the same.
Vacuum packaging machine the difference between different pumps. Advantages: simple transmission structure. Generally adopt the two pole or four pole motor direct connection; Liquid output can be adjusted arbitrarily, through the valve of the discharge line for adjustment, even if the valve is closed, it will not cause the danger of rapid pressure rise like the fixed volume pump; Easy to operate, repair and clean.
Vacuum packaging machine the difference between different pumps. Defective pump installation requirements: lower than the liquid storage tank outlet or pre-filled with the material to be transported, to ensure the pump body and suction tube full of liquid to normal operation and poor design, easy to cause foam and other phenomena.
Vacuum packaging machine the difference between different pumps. Gear pump is a positive displacement rotary pump, in the food factory mainly used to transport viscous liquid, such as oil, syrup and so on. Gear pump types, according to the gear meshing mode generally can be divided into external meshing and internal meshing two; According to the shape of the gear can be divided into spur gear pump, helical gear pump and herringet gear pump and other general in the food factory is more than the external gear pump. It is mainly composed of driving gear, driven gear, pump body and pump cover. The gear is sealed by two end faces, the active and driven gear are supported by two end bearings, the pump body, pump cover and each tooth groove of the gear to form a sealed working space. Food packaging machine is also selected according to the different vacuum packaging equipment.
Vacuum packaging machine the difference between different pumps. Gear pump working principle: in a pair of gear meshing each other, driven by the motor driven gear rotation, driven gear and drive gear meshing and rotation. When the two teeth gradually separated, the volume of the working space gradually increased, forming part of the vacuum, at this time, the liquid under the atmospheric pressure through the suction pipe inhalation, inhalation of liquid along the pump body wall by the gear extrusion pushed into the discharge pipe, when the active, driven gear rotation, pump can continue to inhalation and discharge of liquid.
Vacuum packaging machine the difference between different pumps. Gear pump made of corrosion resistant materials such as nylon, stainless steel, its structure is simple, light weight, reliable work, a wide range of applications, but the transmission of liquid must have lubricity otherwise teeth easily wear, even the occurrence of occlusions next, low efficiency, vibration and noise. In order to avoid liquid flow loss, so gear and pump body and gear side and pump wall clearance is very small, usually radial clearance is 0.10~0.15mm, end clearance in 0.04~0.10mm. General gear pump performance range, flow is usually 0.75~500.00L/mi, pressure is 0.4~20.0MPa, rotation speed is 1200 4000r/min.