Lesson - NPTEL

4. Discuss working principle and characteristics of a single-screw type compressor (Section 20.4.2) 5. Discuss working principle, characteristics and specific advantages of a scroll compressor (Section 20.5) At the end of the lecture, the student should be able to 1. Explain with schematics the working principles of rotary fixed and multiple

How a Ball Screw Works - Ball Screw & Nut Assembly

How A Ball Screw Works A. The Ball Screw Assembly. The ball screw assembly consists of a screw and a nut, each with matching helical grooves, and balls which roll between these grooves providing the only contact between the nut and the screw. As the screw or nut rotates, the balls are deflected by the deflector into the ball return system of the nut and they travel through the return system to

Screw Compressors working principle | Knowledge Hub

Working Principle of a Screw Compressor. The oil injected rotary screw compressor is a positive displacement type compressor. A given quantity of air or gas is trapped in a compression chamber and the space that it occupies is mechanically reduced, causing

Screw Threads - Theory Of Machines - Engineering

Oct 06, 2011 A screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force.A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. More screw threads are produced each year than any other machine element

Hydraulic And Mechanical Presses

The screw pushes a ram with great mechanical advantage. Screw presses are similar to hydraulic presses in that they are relatively slow and require a longer contact with the work. Screw presses are also similar to hydraulic presses in that they can produce a constant amount of force over a long stroke

Different Types of Pumps & Their Working Methodology

Jun 30, 2009 The working of all these pumps are based on the same principle, i.e pumping of the liquid with the help of rotating elements. The rotating elements can be gears, screws or vanes. We will understand the basic principle of all these pumps by taking the working system of

Compressors (Types and Principle of Working)

Jul 25, 2015 This article gives a description on compressor's working and the various types available. It also gives insight on selection of compressors and ways of capacity Variations. Compressors (Types and Principle of Working) A compressor is a device or equipment which compresses the fluid from a low pressure to a high pressure

(PDF) Principles, Classification and Selection of Solar Dryers

Visavale ‐ Principles, Classification and Selectio n of Solar Dryers. Drying of Foods, Vegetables and Fruits 23. The passive solar cabinet dryer have an advantage of being cheap and easy in

Teaching Simple Machines

These six types of machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. Principles of Simple Machines: Machines simply transmit mechanical work from one part of a device to another part. A machine produces force and controls the direction and the motion of force, but it cannot create energy

Shaper Machine: Working, Parts, Types, and Operations

The work can be held easily in the shaper machine. The set up is very quick and easy and also can be readily changed from one job to another job. Disadvantages of Shaper Machine: By nature, it is a slow machine because of its straight-line forward and returns strokes the single point cutting tool requires Several strokes to complete a work

What Is Vernier Caliper? Principle Of Working Of The

Jan 12, 2020 Principle Of Working Of Vernier Scale. The vernier scale works on the principle of using the alignment of line segments displaced by a small amount to make fine measurements. The human eye can easily detect this alignment of lines which is the main fact that drives a vernier

Micrometer Screw Gauge: Principle, construction and its use

Mar 03, 2020 A screw gauge works on the principle of a screw in a nut. i.e. in one rotation screw moves forward through a distance equal to the pitch of the screw. The distance between two successive threads of a screw is called its pitch. Or the pitch of a screw may be defined as the distance that the tip of the screw advances when its head is given one

Classification and working principle of screw conveyor | RICHI

Feb 12, 2021 3. The working principle of screw conveyor. The working principle of the screw conveyor in conveying materials is basically divided into the following three categories: (1) Pushing method. This type of method generally uses spiral blades to convey materials, which are often used for unloading and conveying at the bottom of the silo

Classification and working principle of twin screw

Feb 03, 2021 Classification and working principle of twin screw extruder - Zhoushan Tianxiang Screw Manufacturing Factory. The twin-screw extruder can be viewed from whether it is engaged or not, whether the direction of rotation is the same or different, whether the screw axis is parallel or not, whether the twin screw axis is parallel or not: (1) Intermeshing co-rotating twin screw

Screw Gauge Definition, Working Principle, And

Jul 26, 2018 Least count (LC) of the screw gauge = (pitch)/ (total no.of divisions on the circular scale) Least count of micrometer screw gauge = (1 mm)/ (100) = 0.01 mm. Micrometer screw gauge is defined as an instrument that is used for measuring the diameter of thin wires, the thickness of small sheets such as glass or plastics

Explain the working principle of screw gauge class 11

This screw principle helps to convert smaller distances into larger ones by measuring the rotation of the screw. It amplifies the smaller dimensions and this converts into larger ones. When we rotate the screw, there's a linear movement of the main scale. Then this linear movement helps to calculate diameter or thickness of components. There are two parameters used in every screw gauge

Screw (simple machine) - Wikipedia

For example, a corkscrew is a helix-shaped rod with a sharp point, and an Archimedes' screw is a water pump that uses a rotating helical chamber to move water uphill. The common principle of all screws is that a rotating helix can cause linear motion

Classification of Materials and Types of Classifiers

Oct 31, 2015 The bottom portion of the inner cone is cut away and its position relative to the outer cone is regulated by a screw adjustment. The feed to be separated is fed in the form of a suspension to the centre of the inner cone. It flows downward through the inner cone and out

Micrometer Screw gauge, Working Principle

Dec 26, 2017 The working principle of the Micrometer is based on screw and nut.(Rotational moment to linear moment) As we know as the screw rotates one revolution on the screw, then the screw moves linearly by one pitch distance. Divide the circumference of the screw into a number of fine parts. let’s say 100 parts on the circumference. and the pitch of the screw is 1mm then

How Does a Screw Compressor Work? - Air

The working principle of a screw compressor. First of all, let us take a look at the rotary screw compressor element. The element consists of two rotors that look like helixes, each with a different shape and number of 'grooves'/'teeth' (usually one with 4 and one with 6 teeth). To put it simply, atmospheric air is sucked into this screw element and as the air progresses along the rotors, it gets compressed