Semi-Automatic Mild Steel Industrial Chemical Dosing Pump
- Fire Safety System
- Load Cell
- Pumping Machines
- Automation Grade Semi-Automatic
- Flow Rate 400 Liters/hours at 20 kg/cm2
- Frequency 50-60 Hz
- Material Mild Steel
- Maximum Discharge Flow 0-4 Liters/hours at 3.5 Kg/cm2
- Power Source Electric
- Pump Type Electronic Metering, Motorised and Plunger
- Surface Color Coated
- Usage/Application Chemical Dosing
- Voltage 220 to 240 V
Types of Chemical dosing pumps:
There four main types of chemical injection pumps, and they vary
concerning their pumping mechanisms, their field of application, types
of chemicals pumped as well as pumping pressure.
A) Constant Injection Diaphragm:
In this kind of chemical metering pump, the pump chamber gets filled
and emptied via a piston, diaphragm, and valves placed on the inlet and
outlet of the chamber. When the piston gets pulled, the chamber draws in
the chemical to a pre-calibrated amount while the outlet valve gets
When the required volume gets achieved, the piston gets pushed inwards to inject the chemical at a specified rate of flow.
These types of pumps provide a near-accurate rate of flow, and with
proper adjustments, it can pump chemical at variable rates of flow.
B) Pulse Injection Diaphragm:
In this type of chemical dosing pump, the diaphragm effect works in a
similar manner to that of the Constant Injection Diaphragm pump.
However, in this pump, the rate of flow gets controlled by a solenoid
Instead of a slow and constant pumping, the solenoid draws chemical
into the chamber and pumps it out in pulses. The rate of flow here gets
controlled by producing the pulses at timed intervals.
The mechanical and electrical components are quite simple, and hence
the pump is less accurate regarding chemical dosage volumes due to the
timed pulse injections. If the chemical supply pressure fluctuates, the
dosage will also vary as a result of the timed pulses.
As a consequence of the low accuracy, these pumps are quite cheap.
C) Lobe chemical injection pumps
These types of pumps utilize an impeller set of gears to allow fixed volume of chemical to enter the diaphragm. Though the volume measurement is not as accurate as in diaphragm pumps, these types of pumps mostly get used in the dosing chemicals with high viscosity.
Additionally, it is intricate to adjust the pump accurately for low
rates of flow. However, one advantage of the pump is that it
self-lubricates its gears via the viscous chemicals and hence it has a
reduced wear rate.
D) Peristaltic Chemical metering pumps
Peristaltic pumps are quite accurate because they include a semi-circularly bent flexible tube through which the chemical passes flows. A mechanical arm moves along the curved tube, and its purpose is to capture the required volume of a chemical by squeezing the tube and pushing the chemical along the tube into the dosing pipe.
The main disadvantages of these pumps are that they wear quickly, and due to the use of an expandable rubber tube, they are not applicable to high rates of flow.