science

Reciprocating pump

Reciprocating pump is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Reciprocating pump rather than just read about it. In short: A reciprocating pump is a class of positive-displacement pumps that includes the piston pump, plunger pump, and diaphragm pump. Well maintained, reciprocating pumps can last for decades.

Key takeaways

Reciprocating pump belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Reciprocating pump to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Reciprocating pump from memory before moving on to harder problems.

Reference excerpt

A reciprocating pump is a class of positive-displacement pumps that includes the piston pump, plunger pump, and diaphragm pump. Well maintained, reciprocating pumps can last for decades. Unmaintained, however, they can succumb to wear and tear. It is often used where a relatively small quantity of liquid is to be handled and where delivery pressure is quite large. In reciprocating pumps, the chamber that traps the liquid is a stationary cylinder that contains a piston or plunger.

Types By source of work Simple hand-operated reciprocating pump. The simplest example is the bicycle pump, which is used ubiquitously to inflate bicycle tires and various types of sporting balls. Power-operated deep well reciprocating pump By mechanism Single-acting reciprocating pump consists of a piston of which only one side engages the fluid being displaced. The simplest example would be a syringe. Double-acting reciprocating pump engage with both sides of the piston, each stroke of the piston carries out both suction and expulsion at the same time. Thus it require two inflow pipes and two outflow pipes. Triple-acting reciprocating pump By Numbers of Cylinders Single cylinder - consists of a single cylinder connected to a shaft. Double cylinder - consists of two cylinders connected to a shaft. Triple cylinder - consists of three cylinders connected to a shaft.

Main components of reciprocating pump The basic parts of a reciprocating pump, along with their functions, are as follows;

Water reservoir - it is not a part of reciprocating pump, however, it is the main source where from the reciprocating pump takes the water. It may be a source of other fluid as well. Strainer - It removes all impurities from the liquid to avert chocking the pump. Suction Pipe - It is a pipe by which pump takes the water from the reservoir. Suction Valve - It is a non-return type valve installed on the suction pipe and helps to flow from reservoir to pump not the vice versa. Cylinder or liquid cylinder - The main component where pressure is increased. It is a hollow cylinder with coatings. It consists of a piston along with piston rings. Piston or plunger and Piston rod - Piston is directly connected to a rod that is the piston rod. This piston rod is again connected to the connecting rod. Piston makes the reciprocating motion in forward and backward motion and creates pressure inside the cylinder. Piston rings - Piston rings are small but one of the vital parts to protect the piston surface as well as cylinder inner surface from wear and tear. It helps to operate the pump smoothly. Packing - Packing is necessary for all pumps, to have a proper sealing between cylinder and piston. It helps to stop leakage. Crank and Connecting rod - Crank is connected to the power source and connecting rod makes connection between crank and piston rod. These component helps to change the circular motion into linear motion. Delivery valve (non-return valve) - Like suction valve delivery valve is also non return type and it helps to build up the pressure. It protect the pump from back flow. Delivery pipe - It helps to supply the fluid at destination. Air Vessel - Few reciprocating pumps may have an air vessel, it helps to reduce the frictional head or acceleration head.

Reciprocating Pump Application Application of Reciprocating pumps, are as follows:

Vessel, pipe, tank, tube, condensate pipe, heat exchanger etc. cleaning, Oil drilling, refineries, production, disposal, injections. Pneumatic pressure applications. Vehicle cleaning. Sewer line cleaning. Wet sandblasting Boiler feeding High-pressure pumps for the RO system (Reverse osmosis) Hydro testing of tanks, vessels, etc. Firefighting system. Wastewater treatment system.

Examples Examples of reciprocating pumps include

Wind mill water and oil pump Hand pump Axial piston pump

References Roymech.co.uk Archived 2018-02-05 at the Wayback Machine

Illustrations

Worked examples

Example 1 — a first encounter with Reciprocating pump

Start with the simplest possible case. Write down what Reciprocating pump claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Reciprocating pump before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Reciprocating pump ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Reciprocating pump

In research: Reciprocating pump appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Reciprocating pump in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Reciprocating pump is common in secondary-school and first-year university syllabi. It links to neighbouring topics Pumps, so understanding it makes those chapters shorter.
In everyday life: Look for Reciprocating pump outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Reciprocating pump in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Reciprocating pump means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Reciprocating pump out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Reciprocating pump in simple terms?

A reciprocating pump is a class of positive-displacement pumps that includes the piston pump, plunger pump, and diaphragm pump. Well maintained, reciprocating pumps can last for decades.

Why does Reciprocating pump matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Reciprocating pump?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Reciprocating pump.