CN2096659U - Acid-base without splash liquid pump - Google Patents

Abstract

The utility model relates to an acid-base immersible pump without splash, particularly a single-stage single-suction cantilever immersible centrifugal pump. The utility model which has the delivery head of from 5 to 50 m and the flow quantity of from 12.5 to 200m<3>/h is especially used for delivering acid base suspending liquid with the solid coarseness of <=1 mm, the density of <=1800/m<3> and the liquid level of from 0.8 to 15m<3> deep higher than the pump body. The utility model has the advantages of novel and simple structure without a shaft sleeve, practicability and convenient maintenance. The utility model can suck medium from top to bottom above the pump body, and the medium can not splash upward along a shaft to eject, and therefore, a bearing can not be eroded by corrosive medium, so that the damaged parts and the maintenance can be reduced, and the service life of a machine can be effectively extended. The flow passing components are made of the highest deep-etching resistant material, such as titanium alloy, or high-silicon cast iron, or polyfluortetraethylene which is a king in plastics, so the utility model is adapted to deliver noble acid base deep-etching liquid with granules in hostile environment.

Description

Acid-base without splash liquid pump

The utility model is exclusively used in conveying impurity content 〉=20%, solid granularity≤1mm, density≤1800kg/m ³, the liquid level degree of depth does not have the one step single sucking cantilever soda acid submerged centrifugal pump that splashes at the dark corrosivity soda acid suspension of 0.8～1.5m.

Under Water Pumps is that a kind of mechanical energy with drive unit becomes the liquid stream energy that is transferred medium, makes the machine of media flow.Usually Under Water Pumps all is to be sucked by pump housing lower end, the centrifugal force that rotation produces by impeller extrudes medium, be sent to pipeline, there is sub-fraction to fail to be sent to the liquid of pipeline, then can reflux along the gap between impeller two side cover plates and the delivery chamber, if axle is with the gap of axle sleeve during greater than 1.5mm, the liquid that the refluxes ejection of upwards to splash from this gap, service time is long more, extent of corrosion is heavy more, and axle will become column upwards to spray with liquid between the axle sleeve gap, and it is far away generally to reach 2-4 rice, one is that burn into damages bearing as a result, promptly will upgrade in general about one month; The 2nd, the liquid operator that usually can burn of ejection from bottom to top in overflow hole, people often are considered as the danger-restricted area to the Under Water Pumps workshop, and the common way of user is bound a umbrella film or the protection of other material shield above overflow hole; The 3rd, the flat key material can't solve, and high strength corrosion-resistant again, thus because flat key corrosion, fixing impeller, whole pump can not be worked; Often changed impeller, flat key, axle, bearing etc. by forced-stopping machine, the life-span is very short, waste is very big; This is that the user very looks forward to the Three Difficult Issues that solve.

The purpose of this utility model is that medium does not splash from bottom to top, spray from the overflow hole of pump line when solving Under Water Pumps work, thereby reduces the damage of part, reduces maintenance, improves machine working life, the raising operation rate, goes out power rate.

The utility model is achieved in that the design impeller is sucked by the top.General Under Water Pumps is changed into the upper end from the suction of pump housing lower end suck, not perforate of pump cover sucks, and changes airtight blind plate into.Originally to dwindle the axle and the gap of axle sleeve, the control ejection of splashing, the utility model is to remove axle sleeve, to guarantee to have enough suction areas, the conveying material thereby the realization nothing is splashed.

The concrete structure of model utility is provided by following embodiment and accompanying drawing thereof, and accompanying drawing is the part sectioned view that the utility model does not have the soda acid Under Water Pumps that splashes.

Describe details of the present utility model and working condition in detail below in conjunction with accompanying drawing.

This machine comprises: the fundamental parts of Under Water Pumps is a bearing support, above by the motor cabinet supporting motor, motor drives the axle ［ 5 ］ that is fixed on the bearing support with two cover rolling bearings by the three-jaw coupling and rotates, the bearing support lower end is a plinth, be used for pump is fixed on the liquid pool, below the base neutral position, suspend fixedly pump line ［ 6 ］ in midair with bolt, bolt ［ 8 ］ nut ［ 9 ］ links pump line ［ 6 ］ and the pump housing ［ 10 ］ location, pump cover ［ 16 ］ effect is convenient mounting or dismounting impeller ［ 11 ］, guarantee the gap and pad ［ 14 ］ the sealing pump housing ［ 10 ］ of delivery chamber ［ 3 ］, axle ［ 5 ］ and impeller ［ 11 ］ screw thread ［ 1 ］ transmission, the replacement conventional pump adopts flat key but flat key can't solve material high strength again, corrosion-resistant problem, bolt ［ 13 ］ nut ［ 12 ］ links pump cover ［ 16 ］ in order to the pump housing ［ 10 ］, and axle ［ 5 ］ adopts 45 ^#Steel is compound=the 2mm titanium alloy; in order to protect screw thread ［ 1 ］; seal with teflon gasket ［ 15 ］; turn to by motor terminal and be seen as clockwise running; behind the motor operation; liquid is sucked by the inlet hole ［ 4 ］ on the pump housing ［ 10 ］ top; inlet hole ［ 4 ］ is the axial long hole that a row is uniformly distributed along the circumference; double filter screen function; lead to suction chamber ［ 7 ］; after impeller ［ 11 ］ obtains the liquid stream energy, be sent to the discharge pipe ［ 2 ］ that is oriented in a tangential direction with the pump housing ［ 10 ］ in delivery chamber ［ 3 ］ collection and transport to pipeline, realize that Under Water Pumps does not have the conveying of splashing acid-alkali medium.

Fastener bolt ［ 8 ］, ［ 13 ］ nut ［ 9 ］, ［ 12 ］ use titanium alloy material, and overcurrent part pump line ［ 6 ］, the pump housing ［ 10 ］, impeller ［ 11 ］, pump cover ［ 16 ］ are with titanium alloy or high silicon cast iron material, casting.

The utility model performance range: 1450 rev/mins of rotating speeds

Lift 5-50m

Flow 12.5-200m ³/ h

Claims (1)

1, a kind of nothing soda acid Under Water Pumps that splashes, impeller [11] from top to bottom sucks medium through inlet hole [4], suction chamber [7], collects at delivery chamber [3], by discharge pipe [2] output, it is characterized in that:

A, suction chamber [7] are in impeller [11] top;

B, the pump housing [10] lower end are by pad [14], pump cover [16] sealing.