They are especially suitable for the addition and dosing of chemicals to a water network

The use of hydraulic proportional dosing pumps in the industry allows to avoid the use of flow-meters and control equipment and electric, its mechanism of operation making to always work on a proportional basis. In addition, it's bombs that do not use electricity, the energy needed to work her directly obtained from own flow of water that is being treated.

The dosing of chemicals to a network of water is a common situation in many fields: treatment of waters, potabilizaciones, industrial processes,... The addition of the product can be done in many ways, but one of the most common is the proportional dosing to the flow of water that is being treated.

An approach common to carry out this dosage is the use of a flow meter, or an issuer of pulses, which is able to determine the amount of water that has to deal with and at the same time sends a signal to the dosing equipment to maintain constant the ratio between the volume of dosed chemical and circulating water. This system has the disadvantage that the equipment is not economic, put that in addition to the dosing pump we need to install a team of control flow and an electronics capable of transforming the readings of this in a signal that the pump is able to interpret for dosing on a proportional basis.

The use of proportional dosing pumps avoids the use of both, given that its mechanism of operation is to always work on a proportional basis. In addition, it's bombs that do not use electricity, the energy needed to work her directly obtained from own flow of water that is being treated. But, how do they work these bombs?

The chemical is injected directly into the water at the exit of the hydraulic motor, in a way that never comes into contact with the engine

The proportional hydraulic Proportioning consist of two distinct parts: the hydraulic motor and piston of dosage. The hydraulic motor consists of two chambers separated by a piston of alternative movement that moves by action of the water that enters into the body of the pump. This piston is solidarity with the piston of dosage, in such a way that for each cycle complete the piston of the engine, there is a complete cycle of the piston of dosage. Thus, if the flow of water to be treated is larger, higher the number of cycles and therefore the amount of dosed chemical, is always keeping constant the flow ratio of water/flow of chemical. Through regulation of the size of the Chamber of the piston of dosage you can modify the relationship of flow rates.

As discussed previously, the pump obtained energy directly from the flow of water to be treated. For this reason, the placement of the bomb in the main pipe causes a decrease in the pressure of the water which passes through the interior of the pump. This depends on the flow of water that we try and to a lesser extent, the pressure at the entrance of the dispenser. In any case, it is necessary to have a flow of water without solids in suspension since they could sealing mechanism of the engine and cause the pump does not work correctly.

Pump obtains energy directly from the flow of water to be treated

The ITC FP10 bomb has been developed according to the principles set out above. The capacity of the hydraulic motor is 2 litre per cycle and allows a dosage of up to 2.4 per cent. The chemical is injected directly into the water at the exit of the hydraulic motor, in a way that never comes into contact with the engine. This prevents the internal components of the bomb will be affected by the fluid aspirated and eliminates the possibility of deterioration of the same by chemical attack. For a correct operation of the pump, it is necessary that the flow of water to be found between 0.5 and 10 m³h. The maximum operating pressure is 10 bar, being independent of this parameter obtained dosage.

There is a variant of this pump, model FP10X2, which has two cylinders of aspiration, so two products can be dosed separately, with independent control of up 1 percent for each of the products.

With these two products, which have recently been modified to improve its performance, ITC completed its range of proportional hydraulic Proportioning covering the 0.025 to 10 per cent for flows of water between 6 and 10 000 l.

Proportional hydraulic Proportioning are formed by the hydraulic motor and piston dosing

There are many applications of this family of products in various sectors:

• Papermaking enterprises: preparation of solutions of acid for cleaning of the showers and elimination of deposits of carbonates in them.
• Drinkable water: application of disinfectant on a proportional basis at sites where there is no electricity available, as can be in springs in remote locations.
• Lubrication: online preparation of emulsions of taladrina to lubricate metal machining processes.
• Farms: providing veterinary drugs for animals in drinking water treatment.
• Tunnels of cleaning: dosing of cleaning products (detergents, waxes,...) in washing tunnels.