Generally speaking, the flood control and drainage pump is mainly composed of pipes of different diameters, which are divided into trunk pipes, branch pipes, capillary pipes, etc., and the pipes of various stages are connected into a complete pipe network system through various corresponding pipe fittings and valves, and their functional characteristics are compared. Obviously, the effect of the characteristic curve of the water pump is quite obvious. When the flow rate is relatively small, the whole head is relatively high. When the flow rate is gradually increased, the head is gradually reduced. Therefore, special attention must be paid.
In the process of using the flood control drainage pump, it is necessary to do regular maintenance and maintenance work. There may be a situation where the power supply voltage is too low, the power supply cable is too long, the core wire cross section is too small, and the transformer capacity is insufficient, which may cause a mobile pump to work improperly.
The method for adjusting the flow control of the drainage mobile pump has three types: adjust the plunger or piston stroke, adjust the stroke and the pump speed. Adjusting the stroke is the most widely used. There are three ways to adjust the stroke:
1. Manual adjustment when parking: manually adjust the stroke of the drainage mobile pump when parking.
2. Manual adjustment during operation: change the axial displacement during pump operation to change the radius of the crank to achieve the purpose of adjusting the stroke length. Usual methods include N-shaped crankshaft adjustment, L-shaped crankshaft adjustment, and eccentric cam adjustment.
3. Automatic adjustment during operation: there are two kinds of pneumatic control and electric control. Pneumatic control achieves the purpose of automatically adjusting the stroke by changing the pressure signal of the air source; the electric control achieves the purpose of automatically adjusting the stroke by changing the electrical signal.
The drainage mobile pump can realize the two-dimensional adjustment of the output flow of the metering pump by adjusting the stroke length and the reciprocating frequency under the condition of the metering medium and the working pressure. Both the inlet stroke length and the reciprocating frequency can be used as the adjustment variables, but in engineering applications, the stroke length is generally regarded as a coarse adjustment variable, and the reciprocating frequency is a fine adjustment variable: the adjustment stroke length reaches a certain value, and then fine adjustment is achieved by changing the frequency. Increase the flexibility of metering pump adjustment. In relatively simple applications, the stroke length can also be set manually, using only the stroke frequency as a manipulated variable, simplifying system configuration.
In the process of using the flood control drainage pump, it is necessary to do regular maintenance and maintenance work. There may be a situation where the power supply voltage is too low, the power supply cable is too long, the core wire cross section is too small, and the transformer capacity is insufficient, which may cause a mobile pump to work improperly.
The method for adjusting the flow control of the drainage mobile pump has three types: adjust the plunger or piston stroke, adjust the stroke and the pump speed. Adjusting the stroke is the most widely used. There are three ways to adjust the stroke:
1. Manual adjustment when parking: manually adjust the stroke of the drainage mobile pump when parking.
2. Manual adjustment during operation: change the axial displacement during pump operation to change the radius of the crank to achieve the purpose of adjusting the stroke length. Usual methods include N-shaped crankshaft adjustment, L-shaped crankshaft adjustment, and eccentric cam adjustment.
3. Automatic adjustment during operation: there are two kinds of pneumatic control and electric control. Pneumatic control achieves the purpose of automatically adjusting the stroke by changing the pressure signal of the air source; the electric control achieves the purpose of automatically adjusting the stroke by changing the electrical signal.
The drainage mobile pump can realize the two-dimensional adjustment of the output flow of the metering pump by adjusting the stroke length and the reciprocating frequency under the condition of the metering medium and the working pressure. Both the inlet stroke length and the reciprocating frequency can be used as the adjustment variables, but in engineering applications, the stroke length is generally regarded as a coarse adjustment variable, and the reciprocating frequency is a fine adjustment variable: the adjustment stroke length reaches a certain value, and then fine adjustment is achieved by changing the frequency. Increase the flexibility of metering pump adjustment. In relatively simple applications, the stroke length can also be set manually, using only the stroke frequency as a manipulated variable, simplifying system configuration.
