Why doesn’t conduit pump sail upstream?

Shandong Hairui Zhonglian Pump Industry Co. , ltd. The conduit pump that is a major produces manufacturer. When type selecting of client conduit pump, manufacturer of my company water pump can provide the before-sales service such as price of pump of conduit pump model, conduit, in order to offer client reference, and manufacturer of my water pump can provide the service of product of custom-built pump industry for the client. This product information is the knowledge that why to sail upstream about conduit pump:

The reason that conduit pump does not sail upstream is many sided, bring about by single reason sometimes, cause by many sided reason sometimes. Should remove simple trouble above all, judge problem one by one next, thorough analysis, relatively eventually from go up at all remove trouble, solve a problem.
The reason that generation conduit pump does not sail upstream basically has: Pump housing and suction hose exhaust are not complete; Suction hose damaged or pump case are sealed and bad and take energy of life; Water pump rotate speed is too low; Suck Cheng Taigao; On conduit resistance is too great a powerful person that reach an end jams wait for a reason.
Reason one, the air that perhaps imports conduit without fill full water was not smoked clean; Conduit pump does not give water;
Settle way: Continue fill water or pump the air inside inlet tube path clean.
The Ying Xianguan before the reason water pump that conduit pump does not sail upstream is started is full water, remove the air in pump housing and suction hose thoroughly. The to turn on before fill water puts gas screw, add water next, until risk water outwards from air-bleed hole, turn a few times again pump shaft, if continue to risk water, make clear water already fill is full, screw next exhaust screw, prepare to start. Before the much in be being operated actually however operates personnel to be started in water pump not fill satisfies enough water, although see water,spill over from air-bleed hole sometimes, but make air complete without rotational pump shaft eduction, available gas still hides in impeller, when water pump runs, air takes amount of pump water of the influence in pump case.
Wirereinforced suction hose should level or the ground general plan that stand by water pump are expensive, must maintaining water pump water inlet is taller place, otherwise tall local air platoon does not go out also is to cause a cause that does not sail upstream.
The direction of current of horizontal Duan Ni of the suction hose that contacts with water pump has 0.5 % above drop gradient, join water pump is higher point into the one aspect of the matter of water, do not want complete standard. If up cock, the meeting inside wirereinforced suction hose puts leave a blank to enrage, the vacuum in reducing conduit and water pump is spent, the influence is bibulous, encounter this kind of circumstance to need to reinstall suction hose.
Reason 2, the lift that operating condition place needs is too tall, operating mode of low short of of conduit pump lift asks;
Settle way: Change the water pump of taller lift.
From theoretic tell, below an atmosphere, sucking Cheng should be 10.34 M. This is in tall Cheng of sea level altitude character, average user area should exceed sea level height above sea level, so absolutely suction height is less than 10.34 M certainly. On the other hand water pump forms absolutely vacuum impossibly, and vacuum spends the aerification that causes water more easily greatly more, produce cavitation erosion phenomenon, go against pump job, so the permission of water pump nameplate suction lift is between 3.50~8.20 M, this still includes the pipeline head loss of suction hose. Encounter this kind of circumstance to need recount job to suck Cheng, the job sucks Cheng to must be less than nameplate rated suck Cheng. A lot of people regard the job as to suck Cheng the tall difference of forebay surface and line of water pump center normally, but the surface of the forebay in moving actually always is float change, because this wants the rich surplus with certain obligate.
Reason 3, suction hose road or seal unit are flat and serious;
Settle way: Jam or repair flat place, impaction or change sealed.
The reason that conduit pump does not sail upstream once suction hose damaged or pump case are sealed and bad to enter pump housing with respect to can available gas, bring about therebyConduit pumpSmoke do not sail upstream. Because suction hose is long-term potential underwater, tube wall corrodes occurrence hole, the surface after water pump works drops ceaselessly, after these hole show water, air enters suction hose from hole, appear to this kind of circumstance is about to change or repair suction hose.
As a result of pump shaft roll pump case is fixed do not move, there is certain space necessarily in the osculatory place of axis and pump case, to prevent leakage of clearance of edge of liquid of the high pressure inside pump, or prevent outside air to enter pump from opposite way inside, must install an axis to enclose buy, the axis of conduit pump encloses buy common is filling case axis is sealed, load soft filling among them. The filling of water pump has worn away because of be being used for a long time or press too loosely, cause many water the clearance from filling and pump shaft axle sleeve is ejective, cause external the interior that air enters water pump from these clearance, the processing technique of this kind of circumstance is to change filling.
Reason 4, wiring of electric machinery of Nor of outfit of direction of imports and exports of pump of conduit of the conduit when field assembly is incorrect the direction of rotation of water pump is incorrect;
Settle way: Wiring of electric machinery of direction of exchange imports and exports is incorrect exchange among them two wiring change random direction of rotation.
Reason 5, water pump rotate speed is too low; Conduit pump does not give water;
Settle way: Increase water pump rotate speed.
Lift can appear to reduce when water pump rotate speed is too low, discharge decrescent. Bringing about water pump rotate speed to cross small account is many sided, basically have the reason of the following respects.
2.3.1 people have for the element comparative to because first wife electric machinery damages,operate personnel partly, match an electric machinery to drive at will, if match electric machinery rotate speed, power newly to be less than former electric machinery, can cause rotate speed to reduce, water pump is carried do not sail upstream.
Nut of close solid of the mechanical failure impeller of itself of 2.3.2 water pump and pump shaft loosens or pump shaft is out of shape bend, cause impeller to move more, chafe with pump housing directly, or bearing attaint, reduce the rotate speed of water pump likely. If appear this kind of circumstance, mix very easily when water pump moves from the sound of water pump shake on judgement.
2.3.3 voltage cross low some pumping station to do not have alone transformer, however from already power supply of some circuitry of transformer erect low pressure, low-pressure circuitry is longer, voltage drop low range is big, cause electric depress, bring about electric machinery rotate speed to drop thereby, cannot sail upstream normally.
Thank you very much to Shandong Hairui Zhonglian Pump Industry Co. , ltd. The visit of official website! Above is the introduction that why to sail upstream about conduit pump, still think to this problem like you deep one pace understanding, or the problem that has price of model of type selecting of product of other pump industry, water pump, water pump, water pump needs to solve, contact this water pump manufacturer please, my company returns production to suck pump oneself, welcome you at any time seek advice.