Double Suction Centrifugal Pump

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FAQ

How high can the pneumatic diaphragm pump be?

Pump made of polyvinylidene fluoride (PVDF) material two, the series of pneumatic diaphragm pump belongs to the fluorine plastic pneumatic diaphragm pump is also known as the corrosion products of pneumatic diaphragm pump, diaphragm liquid contact using PTFE material, using PVDF material produced by pneumatic diaphragm pump is mainly used in corrosive the pH, mainly used for chemical liquid conveying multiple solvent, corrosion resistance effect is very good. The series of fluorine plastic pneumatic diaphragm pump in high temperature less than 93.3 degrees.POM pump material also has good resistance to solvent and abrasion resistance, low friction resistance, moisture absorption is also low, the highest temperature of such pumps within 65.5 degreesPolytetrafluoroethylene (PTFE) membrane corrosion resistance is very good, in addition to liquid metal lithium, potassium fluoride, sodium fluoride, three chlorine, three fluoride high temperature oxygen, high flow rate, almost all of the chemical liquid transport (including concentrated nitric acid and aqua regia), PTFE material the maximum temperature to 176.6 degrees. However, for the diaphragm pump product as the diaphragm moves back and forth in work, we suggest that at a temperature of 120 degrees, the prerequisite is the pump body pump must be made of metal material and plastic material. The pump is the pump of PVDF material temperature is highest in less than 93.3 degrees.

Common failure treatment of piston pump

1) overflow valve regulation is too high, overload after the pump2) the overflow valve spool is blocked, the central hole of the valve core is blocked or the overflow valve is blocked by a damping hole, and the overflow is not overflow3) pump outlet one-way valve installed or spool blocked and stuffy pump4) motor fault x091) adjust the relief valve pressure value2) repair valve boring3) overhaul check valve4) overhaul or replace the motor

The difference between submersible pumps and centrifugal pumpsWhat's the difference between the two? What is applicable and what?

Difference：The installation position is different: one can discharge water, one is on the ground.The work principle is different: the principle of submersible pump is similar to the electric fan, centrifugal pump through centrifugal force to make the water throw out. According to the principle of centrifugal force design,

Why is the flow of the pump too small will occur cavitation phenomenon?

This is because the impeller of the centrifugal pump rotating speed under the drive of the prime mover, when the valve opening decreases, flow rate is too low, can not be taken away by the friction heat generated by the impeller and the liquid completely, make the temperature of the liquid inside the pump. Thus causing liquid vaporization, forming cavitation. Especially in the power plant, the boiler feed pump is more remarkable. Therefore, when throttling regulation, we should set up recirculation system, increase the output flow of the pump to prevent cavitation. When the feed water rate is reduced to 1/3 of the maximum flow rate, the recirculating gate shall be opened so that the flow of the feed pump will be increased properly to ensure that the liquid temperature in the feed pump does not rise.

The difference between diaphragm pumps, vacuum pumps and centrifugal pumps

The diaphragm pump and centrifugal pump refer to the structure of the pump, and the vacuum pump means the use of the pump. There is no comparability between them.Centrifugal is the sign of inertia of an object. As the umbrella turns, water droplets move out of the outer edge of the umbrella and are thrown out. This is what is called centrifugal. Centrifugal pump is designed according to this principle. The high speed rotating impeller blade drives the medium to rotate and is thrown out so as to achieve the purpose of conveying.

Shielding pump is the main drawback of electricity? How much does it cost more than an ordinary centrifugal pump? Is there any noise in the running of the canned pump? How much is it lower than the noise of the common centrifugal pump?

Product featuresThe integrated structure of motor and pump adopts static seal, so that the pump is completely free of leakage;Full closed and no leakage structure, can transport toxic and harmful liquid substances;The shielded water-cooled motor and the cooling fan are removed to make the pump operate in a low noise and quiet condition. The utility model is suitable for occasions with high environmental noise requirements;

What is a feed pump?

Because under normal circumstances, the water pump suction port flow rate is low, can not meet the requirements of high pressure water injection pump. Therefore, the purpose of adding a feeding pump at the front of the water injection pump is to increase the flow rate of the inlet of the high-pressure water injection pump so as to meet its water supply requirements!

Working principle and diagram of axial piston pump with pressure compensation variable

Working principleThe main part (see section structure) the transmission shaft drives the rotating cylinder, the plunger seven uniform distribution on the cylinder to rotate around the shaft center line through the center of the spring will be slippery boots column components in the variable pressure in the head (or swash plate). In this way, with the rotation of the plunger cylinder for reciprocating motion complete, oil absorption and oil pressure action.