Consider the example of the Aquarius pump. This is a practical, simply arranged and most appropriate in the category "price-quality" borehole pump device. It consists of two parts: a pump and an electric motor. The pump works by centrifugal force.
To calculate the power of a pump for water wells, you can use the calculator for calculating the power of a pump for water wells.
The pump consists of a shaft on which blades, impellers and drive rings are put on, passing through the shell. Parts of the product are held in place by a cap with an internal thread. When the device is turned on, the wheels spin, creating a centrifugal force that pumps the liquid that fills the inside of the shell.
The engine consists of a stator, a rotor, two ball bearings that spin in oil. Automation is produced by the German manufacturer "Thermik". It is trouble-free, independently controls the operation of the engine and will protect it if you have to work at the limit. In order to control the operation of the pump, there is a remote control device attached to the power supply cable. This pump is designed to supply water from a depth of 1 to 20 m, with the smallest allowable well diameter from 120 mm. It is possible to adjust the water pressure, which is supplied by the pump using a special valve located at the end of the outlet hose. The device is suitable for lifting water in quantities from 360 liters to 12 cubic meters per hour, the diameter of the hose must be greater than ¾ inch. Considering working qualities downhole pump devices, it is possible to use it for pumping water from wells, natural reservoirs, other reservoirs, wells.
Connection and service of the borehole pump.
Before lowering it into the well, the Aquarius pump must be prepared:
The pressure pipe must be connected. The type of pipe to be connected depends on the needs for which the Aquarius pump is planned to be used. You can use a hose for irrigation if it will be used for irrigation or water intake, or if you plan to use it for work in tandem with a hydraulic accumulator in a stationary installation - a metal or plastic pipe.
Check valve installation. When connecting a pump that operates in a closed pressure water supply system, it is imperative to connect a check valve. A non-return valve is not installed during production. There are two ways to connect: by tapping into the pipe at a distance of less than 1 m from the outlet or by installing the valve directly into the outlet. According to experts, a valve with a brass seat is the best choice.
Rope connection. The cable is passed into special slots on the body and securely fastened. The cable can be used from both nylon and steel. It is strictly forbidden to lift or lower the pump by the wire. From practical experience it follows that it is best to fix the wire in the pressure pipe using the brackets intended for this - this will facilitate the lowering and raising of the device and practically eliminate the possibility of mechanical damage. After that, the downhole pump device is connected to the outlet.
The device is carefully lowered into the well under strict control over the degree of tension of the pressure hose and electric cord. The device is attached at the desired depth with a cable. The pump can be used.
Even taking into account the high reliability of the Aquarius pump and the fact that it can operate uninterruptedly for many years, it is recommended to take it out of the well twice a year to inspect it for breakdowns. Check it out. It is unacceptable to seize the axis of the engine during rotation, which should be light and soft. In the event that no jamming of the axis is detected and the device pumps water smoothly under the required pressure, it should be installed in its place.
If there are any concerns about the correct operation of the device, it is necessary to continue the examination. provides for the possibility of systematic inspection, and if necessary, replacement of rotation bearings. It is recommended to inspect the condition of these parts, the oil seal and check the oil level. If this is necessary, it is worth changing the seals and bearings, adding oil to the desired level. It is worth looking at the motor winding and determining if there is any damage or signs of overheating. Dismantling the engine is a delicate matter: after all, the insulation of the wire becomes brittle and easily damaged after some time. The pump part does not need special maintenance, but, with a strong decrease in the pressure of the device, it would not hurt to change the impellers - perhaps the reason is their wear.
Cleaning and minor repairs of the borehole pump.
There are times when borehole pump device does not rotate and its owner needs to disassemble the pump. Please note: the device does not have an internal filter, and a mesh that traps stones and coarse sand is attached outside between the engine and the pump part. For this reason, the cessation of rotation, as a rule, is caused by breakage or clogging of the impellers. Not a large blockage, it is possible to try to eliminate it yourself.
You need to clean in several stages:
Remove the protective grid. In new models, it is fixed with a special clip that opens by prying with a screwdriver or by lightly pressing in the middle. On the old ones - there are two ordinary bolts that are easily unscrewed
On wide models of pumps, it is also possible to remove the cable channel - a small metal groove that protects the cord from defects.
The engine can be dismantled and disconnected from the pump part by unscrewing the four bolts with a 10 wrench. After that, the couplings that direct the engine power to the pump must be removed.
The disassembled apparatus is carefully placed on a horizontal surface. It is very important not to damage the cord.
Next, you need to scroll the shaft with a 12 head or a socket wrench, be sure to support the upper part of the apparatus. When the shaft moves, it is necessary to apply a jet of water to the pump part in order to remove parts from there due to which the device is stuck. After making sure that the shaft can rotate, we carefully wash the pump, and assemble it in the reverse order.
If it turns out that the impellers are broken, disassembly of the pump part is necessary. Entrust these works to service employees, since in this case it is necessary to replace broken parts.
Not infrequently, there are cases when the owner of the pump, noticing that the axis in the pump part does not rotate, decides that the bearing is jammed. But in the pump part there is one plain bearing and, accordingly, cannot jam. Here there was a problem with the impellers and it is best to replace them. If you have spare parts, you can try to fix the pump yourself. For this you need:
- Rest against the brass part of the bottom of the apparatus and with force squeeze the shell from below and from above.
- Using narrow teeth, remove the retaining ring. The ring is in a special groove and will loosen if the shell is squeezed hard.
- Remove all impellers one by one, then remove the thrust cover with bearing.
- Eliminate the cause of jamming and fold the parts in reverse order.
It should be borne in mind that service centers have a special press with which they disassemble and assemble the pump. Without such a press, at home, it is difficult to do this, and maybe impossible.
