The sprayer is then sealed and an air line connected with the container being pressurized to its design pressure of anywhere between bar. A safety valve acts above the design pressure to prevent containers from being over pressurized. Units are fitted with a lance, hose and trigger and once the trigger is activated it allows the pressurized contents to evacuate via the nozzle and lance. Industrial designs are filled with compressed air via an airline where as cheaper designs consist of a manual pump which is worked several times to pressurize the air inside the chamber.
Typical applications for sprayers include spraying of: Cleaning Detergent or disinfectant Paint of low viscosity such as creosote Weed Killer Degreaser for removing grease from mechanical components Low Viscosity Lubricating liquids for lubricating mechanical parts in hard to reach places.
If you are looking for help in selecting a suitable model for your process, contact us on or email sales northridgepumps. By signing up, you agree to North Ridge Pumps using your personal data in accordance with our Privacy Policy. As soon as you release the sprayer head, the chamber fills up with liquid. This seems to defy gravity, so our friendly scientist Aristotle will clear things up. Thanks to Aristotle, we know that nature abhors a vacuum.
What this means is that, due to Earth's gravity, nature contains no completely empty spaces. These empty spaces are immediately filled with denser surrounding material. How does this apply to pumps? When you press down on the sprayer or pump head, it compacts that little space within the chamber. When you release it, something has to fill that space. In this case, the space fills with liquid drawn up through the dip tube. And that is how a pump works. If your brain is sufficiently fried, don't be alarmed.
Pumps are pretty complex little devices. Let's review the process in simple terms:. First, you press the sprayer head. This compresses the chamber. When there is liquid in it, the liquid can't go back down the dip tube because of the valve, so it comes out of the nozzle. When you release the sprayer head, the chamber needs something to fill it don't forget about Aristotle! The pressure line G connects the pump F to the regulator control unit H and then to the spraying lines L ; agitation lines: the agitator P must be positioned at the bottom of the tank D in order to keep the liquid mixed, thus avoiding the deposit of chemicals on the bottom.
The agitator is powered by an ancillary output R. By-pass lines The by-pass lines are required for returning the liquid to the tank. They consist of: main by-pass line : line I returns the overflow from the regulator control unit to the tank; safety valve by-pass M : in case of pressure peaks it returns the overflow to the tank, through the line O , avoiding breakage of the pump and environmental contamination. Pressure regulator The diaphragm pump, like any other positive displacement pump, must also include a pressure regulator equipped with by-pass on the delivery line , which has a dual function: adjust the desired pressure; do not exceed the maximum pressure allowed by the pump.
Normally, a pressure regulator or control unit is equipped with: a master valve for the main shut-off a pressure regulation valve optional in some versions a by-pass: for the return of the overflow to the tank section valves or taps to distribute the flow to the various lines a pressure gauge.
Share This Post! Related Products. Subscribe to our Blog. Find us on Facebook Comet Spa. Popular Recent. Imprese di RE n. RE - Cap.
0コメント