Dosing Pump UsesDosing pump is a type of pump that is used to pump the flow rate of chemicals into the water stream. Dosatron Dosing Pumps are used in a variety of applications, from agriculture, industry, manufacturing to medicine. These chemical injecta dosing pumps are generally powered by a small electric motor or air propulsion. These pumps are controlled by an external control system or more generally an internal pump controller which can change the flow rate, on/off functions and also things like alarms etc.
This method works to take a number of chemicals and then inject them into a pipe or vessel. There are several main parts to a Dosing Pump setup:
1. Chemical Tank or Container (Chemical Tank)
The tank on this dosing pump is used to put chemicals that have been dosed
2. Foot Valve
The foot valve is part of the dosing pump which is a one-way valve connected to the suction line which is placed inside so that the pump can work optimally. Foot Valves must have a load on them, to keep them at the bottom and some are equipped with an attached float switch so that the pump has an active alarm if the product runs out.
3. Liquid End
The liquid end is the part of the dosing pump that has a suction line, and the dose is listed on the suction line. This dosing line can be PVC or PE pipe or hose. Sometimes in steam, hot water or super high pressure applications, the line can be stainless steel equipped with a pressure relief or air release valve. but generally the pointer is just a line.
The injector is a one-way valve, so when the dosing pump pushes a certain amount of chemical into the line, the injector can apply pressure into the flow line. Once the chemical flow is released then the pump will stop, the valve will stop the liquid in the delivery line. After some time of use, liquids in the form of acids or chlorine or peroxide, can clog the pipe walls.
5. Control System
Usually, several types of dosing pumps are equipped with a control system such as a timer that is installed to ensure the pump has an accurate dosing and is on/off at a certain time. In addition there is also a dosing pump equipped with sensors for pH, chlorine and the like as well as a variable rate control to increase and decrease the dose level. Usually this type of pump is used in more complex operating systems.
Since the components of the dosing system are so important, how they are arranged is also important for all parts to work properly. The first thing to make sure is that all components are compatible with the product being dosed. Things like high corrosiveness, high pressure, and high temperature require special components so the pump won't break or corrode.
In addition, another thing that needs to be considered is that it must be placed so that the chemical can mix well and not affect other parts of the pipe. Ideally the dosing pump is placed next to the power or compressed air to make it work, generally next to or below the dosing point to prevent it from being sucked in and protected from water, dust, sun or heat damage.
While dosing pumps can handle highly corrosive products, these types of pumps are generally not very weather-resistant, and their casings have a fairly low IP rating. So the dosing pump needs to be protected by a protector to maximize the life of the pump.
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