Centrifugal pump with its simple structure, easy maintenance, high efficiency and become the most widely used in agriculture, a pump, but also because sometimes mention the water and make you feel annoyed. We will analyze the reasons for not referring to the fault of water.
Air inlet pipe and pump body
(1) Some users are not filled prior to starting the pump enough water; sometimes looks irrigation water from an overflow discharge hole, but the rotation of the pump shaft post air is completely discharged, resulting in a little air still remains in the pump body or inlet .
(2) The horizontal section of the inlet pipe in contact with the pump applies a descending gradient of 0.5% or more to the direction of the flow of water, and the one end connected to the inlet of the pump is the highest, not completely horizontal. If you tilt up, there will be trapped air inlet pipe, reducing the vacuum hose and pump, affecting water absorption.
(3) The packing of the pump is worn or the packing pressure is too loose due to the long-term use, resulting in a large amount of water being ejected from the gap between the packing and the shaft sleeve of the pump. As a result, external air flows into the pump from these gaps, Affected the mention of water.
(4) Inlet pipe Due to long-term potential underwater, pipe wall corrosion holes, water pump work continues to decline, when these holes exposed water, the air from the hole into the water pipe.
(5) cracks in the inlet pipe cracks, inlet pipe and pump connections appear tiny gaps, are likely to make the air into the inlet pipe.
Pump speed is too low
(1) human factors. A considerable part of the user due to damage to the original motor, coupled with another motor driven, resulting in less traffic, low lift or even pumping the consequences of the water.
(2) belt wear. There are many large pump away from the belt, because of long-term use, the belt wear and loose, there slippage, thereby reducing the pump speed.
(3) improper installation. Two pulley center distance is too small or two axes are not parallel, tight belt mounted to the top, resulting in the wrapping angle is too small, the two pulley diameter calculation error and coupling shaft pump two eccentric eccentricity will result in Pump speed changes.
(4) the pump itself mechanical failure. Loosening of the impeller and the shaft of the pump shaft or the deformation and bending of the shaft of the pump cause the impeller to move more, directly friction with the pump body, or bearing damage, which may reduce the speed of the pump.
(5) Power engine maintenance does not record. Motor due to the winding burned, and lost magnetism, the maintenance of the winding turns, diameter, wiring changes, or maintenance failure is not completely ruled out the factors that will change the pump speed.
Manual PU foam making machine
Main Usage:
This machine is mostly used for mixing , stirring and foaming raw material for foam
rubber.Adopting high speed and low speed segment with timing willingly controlled function ,
it also fits parking willingly electron brake device , the Operation is simpler and the foaming quality is better.
Foaming Machine is an economic type of auto batching machine that is used for making all kinds of PU foam.
1. Main machine:
* 200kgs of main mixing tank with Teflon coating
* 15kw motor (Siemens) and 15kw inverter ( Taiwanese Delta)
* 50L of transfer tank with automatic vale for TDI
* 1 set of 3 way pneumatic valve for TDI ( Taiwanese)
* 1 set of 3 way pneumatic valve for water (Taiwanese)
* 1 set of 3 way pneumatic valve for mixture (Taiwanese)
* 1 set of controlling center
* Touch screen ( TL1310/HCFA 10 inch) + PLC ( Mitsubishi) + Electrical components ( Fuji)
2. Metering pumps.
* 1 set magnetic pump DPMY-6/0.4 ( Chinese ) for TDI
* 1 set gearing pump GPY-11.5R ( Japanese) for water
* 1 set gearing pump KCB200(Chinese) for mixture ( PPG+ silicone + tin + amine + CaCO3+color +-)
* And their connecting pipes
3. Tanks.
*1 set of 100kgs tank for water.
*1 set of 1 ton mixing tank for mixture ( PPG + silicone + tin + amine + CaCO3+color +-)
Note: TDI tank just use it`s packing jug directly.
4. Moulding box. ( customized size) 1 set moulding box with carrying wheel.
5. Air compressor: 1 set
6. Electronic scale: 100kgs-1set, 5kgs-1set
Pu Foam Spray Machine,Manual Foaming Machine,Foam Production Machine,Pu Foam Injection Machine
SOFTLIFE MATTRESS MACHINERY CO.,LTD , https://www.machinesoftlifefoam.com