1, rotor flowmeter
Rotor flowmeter, also known as the float flowmeter, is a variable area flowmeter, in a vertical cone tube from the bottom up and expanding, circular cross-section of the buoyancy of the gravity of the float is borne by the liquid power, the floats can be free to rise and fall within the cone tube. Up and down under the action of flow velocity and buoyancy, and the weight of the float is balanced, through the magnetic coupling to the with the dial indication of the flow rate. Generally divided into glass and metal rotor flowmeter. Metal rotor flowmeter is the most commonly used in industry, for small diameter corrosive media usually made of glass, due to the fragility of the glass material itself, the key control point is also useful for all titanium and other precious metals for the material of the rotor flowmeter.
Glass rotor flowmeter is widely used in chemical industry, petroleum, light industry, medicine, environmental protection, food and measurement testing, scientific research and other departments, to measure the flow of single-phase non-pulsating fluid (liquid or gas). Glass rotor flowmeter has strong corrosion resistance, can detect acid (except hydrofluoric acid), alkali, oxidizing agent and other corrosive gases or liquids flow, suitable for chemical, pharmaceutical, papermaking, sewage treatment and other industries.
2, electromagnetic flowmeter
Electromagnetic flowmeter is a measurement of conductive liquids, according to Ferrari's principle of electromagnetic induction, the road in the magnetic field and cutting the magnetic field of movement, the conductor in the conductor generates induced potential pipeline inside the two electrodes to measure the induced voltage generated. Measuring pipeline through the non-conductive lining (rubber, Teflon, etc.) to achieve electromagnetic isolation from the fluid and measuring electrodes.
Electromagnetic flowmeter has been widely used in the world, the field involves sewage, chemical, pharmaceutical, paper, food and other industries. Electromagnetic flowmeter measurement accuracy is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity, the sensor senses a linear relationship between the voltage signal and the average flow rate, so the measurement accuracy is high. Measurement of the pipeline without flow resistance, so there is no additional pressure loss; measurement of the pipeline without moving parts, so the sensor life is very long, which are other flow meter equipment can not be compared.
3, metering pump
Metering pump is a metering equipment with the function of injection, the use of pump plunger reciprocating motion to pressurize and measure the fluid. Metering pump is used to transport liquids (especially corrosive liquids) a special volumetric pump.
The motor through the coupling drives the worm gear and through the worm gear deceleration so that the spindle and the eccentric wheel for rotary motion, driven by the eccentric wheel bow-type connecting rod sliding adjustable seat for reciprocating motion. When the plunger to the back of the dead center, the pump cavity gradually form a vacuum, the suction valve open, suction liquid; when the plunger to the front of the dead center of the move, this time the suction valve is closed, the discharge valve is open, the liquid in the further movement of the plunger discharged. The reciprocating pump also works to form a continuous pressure, quantitative discharge of liquid.
Measuring pump the pump superior performance, which diaphragm-type metering pump absolutely no leakage, high safety performance, measurement and delivery of accurate, the flow rate can be adjusted arbitrarily from zero to the maximum quota value range, the pressure can be from atmospheric pressure to the maximum permissible range of arbitrary selection. And the adjustment is intuitively clear, smooth, no noise, small size, light weight, easy maintenance, can be used in parallel.