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Vocabulary

fluid impellent pump рідинний насос

impeller робоче колесо

casing картер

spin крутитися

piston pump поршневий насос

vessel ємність

suction conditions умови всотування

deliver постачати

discharge викид

check valve стопорний / контрольний клапан

inlet / outlet stroke крок впуску / випуску

close fit with тісно прилягати до

external agitator bar зовнішнiй важіль мішалки

shell кожух

blow удар

preordained preasure завданий тиск

slurry грязь

funnel воронка, раструб

diatomaceous-earth

precoat обкладка диатомовою землею

Test

  1. Match the notions to their definitions:

1. Positive-displacement pumps are

Which are used for pumping viscous fluids.

2. Reciprocating pumps are those

positive-displacement

pumps and centrifugal pumps.

3. The centrifugal pumps is

those which deliver a definite quantity of liquid for each stroke or revolution of the prime mover.

4. Two main groups of the pumps are:

one of the simplest types.

1

2

3

4



2).Match the titles to the parts of the text:

1). The centrifugal pumps.

2). Two main groups of pumps.

3). Pumps of various kinds.

4). Reciprocating pumps.

A

B

C

D

3.What statements are true or false:

1). . Pumps may be divided into three major classifications: piston pumps or reciprocating pumps. centrifugal pumps, rotary pumps, fluid-impellent pumps.

2). These pumps are driven by engines or electrical motors.

3). Positive-displacement pumps are those which deliver a definite quantity of liquid for each stroke or revolution of the prime mover.

4). The conditions that will influence the selection of the type of the pump are: the type of sand to be handled ; that is its viscosity; cleanliness, temperature and so on.

5). Reciprocating pumps are particularly badly suited for pumping viscous fluids because the high rate of shear acting on the cylinder walls serves as an

additional "packing.

6). Only pump size, design, and suction conditions will influence the quantity of liquid that can be delivered.

1

2

3

4

5

6

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