Metering pumps are also known as metering pumps or proportional pumps. Metering pumps are a special capacity pump that can meet a variety of stringent process requirements and can be steplessly regulated in the range of 0-100% for the delivery of liquids (especially corrosive liquids). The metering pump measures the metering capacity of each metering pump.
Metering pump is a one-way positive displacement pump, the pump chamber pressure is greater than the external pressure when the metering pump to play the liquid. Metering Pump When the external pressure is higher than the pressure on the plate, the metering pump work in the overload state. If the electromagnetic diaphragm metering pump, the flow will drop a lot, or even no liquid; if the motor-driven metering pump, the motor may overheat damage.
FKM series of hydraulic diaphragm metering pump features: very unique hydraulic diaphragm metering pump centralized canvas bag women's shoulder shoulder diaphragm metering pump and plunger metering pump all the features, both to meet the user's export pressure requirements (maximum Up to 100 bar), but also to solve the corrosive medium metering requirements. The flow of the metering pump does not follow the pressure, Metering Pump usually speaking, the less the moving parts of the metering pump work more reliable. The metering pump is well suited for low flow, low pressure working conditions and has a good compensatory effect when the supply voltage fluctuates.
Metering pumps are divided into two major categories, one is the plunger metering pump, Metering Pump one is the diaphragm metering pump. Here we have two of the metering pump to do a brief description of the body.
Piston metering pump: motor through the direct drive drive worm gear for variable speed movement, the role of the crank link mechanism, the rotary motion into a reciprocating linear motion. Plunger in the reciprocating linear motion, directly with the delivery of the media contact, through the pump head on the one-way valve opening and closing role to complete the purpose of suction. Metering Pump To achieve the function of transporting liquid. To a plunger for the principle of introduction, a piston pump has two one-way valve, and the opposite direction, the plunger in a direction of movement when the cylinder negative pressure, then a check valve to open the liquid was sucked into the tank, When the plunger moves in the other direction, the liquid is compressed and the other check valve is opened and the liquid sucked into the cylinder is discharged. This work after the continuous movement of the formation of a continuous liquid.
Diaphragm metering pump: motor through the direct drive drive worm gear for variable speed movement, the role of the crank link mechanism, the rotary motion into a reciprocating linear motion. Slide bar and diaphragm directly connected to the work of the slider when the reciprocating movement directly push (pull) moving diaphragm back and forth, through the pump head on the one-way valve opening and closing role to complete the purpose of suction. Metering Pump To achieve the function of transporting liquid.
Instructions for use are as follows:
1 plunger metering pump: plunger in the reciprocating linear motion, directly with the delivery of the media contact, in the import and export of one-way valve to complete the role of suction liquid. Applicable to all kinds of high pressure, low pressure (use pressure 0-60Mpa), strong corrosive occasions. Measurement accuracy of less than 0.5%.
2 hydraulic diaphragm metering pump: with the plunger in the cylinder of the reciprocating movement, so that the cavity of the liquid pulsating force, to promote the diaphragm back and forth, under the action of the import and export valve to complete the purpose of pumping liquid. Metering Pump Since the diaphragm separates the plunger from the conveyed medium, it is possible to prevent the liquid from leaking outwards. Its pressure range is between 0-35Mpa. Hydraulic diaphragm metering pump Each configuration of three or two valve device: automatic charge valve, safety valve, exhaust valve. Accurate measurement, high pressure resistance, strong corrosion resistance and no leakage is its significant advantages.
3 mechanical drive diaphragm metering pump: it is the difference between the hydraulic diaphragm is the slider and diaphragm directly connected to the work of the slider when the reciprocating movement directly push (pull) moving diaphragm back and forth through the pump head on the one-way valve Opening and closing effect to complete the purpose of suction. It has a hydraulic diaphragm pump does not leak, Metering Pump strong resistance to corrosion of the outstanding advantages, and cheap. Applicable to low pressure and small flow of the occasion.
The metering pump is a pump dedicated to measuring the delivery of liquid. Most metering pumps use plunger and diaphragm pumps (see reciprocating pumps), and are also useful in gear pumps because they can maintain constant flow regardless of discharge pressure. Metering pumps have two kinds of adjustable and non-adjustable flow, the applicability of the former more widely.
The flow is mainly adjusted by changing the length of the stroke, such as changing the crank radius, the distance between the trailing point of the plunger return and the plunger rod and the crosshead, and by adjusting the number of reciprocations or by adjusting the flow rate in two ways. Although the stroke length can be adjusted from zero to the maximum, but in order to ensure the measurement accuracy, are generally limited to 30 to 100% range.
