Industrial Filtration Equipment: Operation and Design
1. Plate and Frame Filter Press
The plate and frame filter press is one of the most common batch filtration devices used in chemical and pharmaceutical processing.
Principle
It works on the principle of surface filtration under pressure.
Construction
- It consists of a series of alternating plates (with grooved surfaces for drainage) and frames (hollow chambers where the cake accumulates).
- These components are supported on rails and squeezed together by a hydraulic or manual screw mechanism.
Working Process
- Slurry
Engineering Materials: Properties and Heat Treatment
Ferrous and Non-Ferrous Materials Comparison
| No. | Ferrous Materials | Non-Ferrous Materials |
|---|---|---|
| 1. | Contain iron as the main constituent | Do not contain iron |
| 2. | Magnetic in nature (most ferrous metals) | Non-magnetic |
| 3. | High tensile strength | Generally lower tensile strength (except some alloys) |
| 4. | More prone to rust and corrosion | High resistance to corrosion |
| 5. | Usually heavier | Usually lighter in weight |
| 6. | Less expensive | More expensive |
| 7. | High melting point | Lower melting point |
| 8. | Good for structural applications | Good for electrical and |
Essential CNC Machine Concepts and Technical Specifications
CNC Machine Specifications and Capacity
The specification of a CNC machine gives detailed information about the capacity, size, accuracy, and performance of the machine.
Important CNC Machine Specifications
- Machine Type – CNC lathe, CNC milling machine, CNC machining center
- Table Size – Length × width of worktable
- Maximum Workpiece Size
- Spindle Speed Range – Minimum and maximum RPM
- Feed Rate – Rapid and cutting feed
- Number of Axes – 2-axis, 3-axis, 4-axis, 5-axis
- Tool Capacity – Number of tools
Heat Transfer Modes: Radiation, Planck’s Law, and Convection Analysis
Radiation Heat Transfer Fundamentals
Radiation heat transfer is the transfer of thermal energy from a body in the form of electromagnetic waves (mainly infrared radiation).
It does not require any medium, so it can occur even in a vacuum. A common example is the heat reaching Earth from the Sun.
Radiation vs. Conduction and Convection
| Mode | Medium Required? | How Heat Transfers |
|---|---|---|
| Conduction | Yes (solid) | By direct molecular contact |
| Convection | Yes (fluid – liquid/gas) | By actual movement of fluid particles |
| Radiation | No |
·A “Bourdon Tube” is used in: PRESSURE SENSORS
1)CCD Camera?
A CCD (Charge Coupled Device) is an electronic sensor used in cameras to capture digital images
It converts light → electrical charge → digital data
Each pixel stores charge proportional to the light intensity, forming the image
Construction
CCD is based on a MOS (Metal–Oxide–Semiconductor) structure, not a simple pn junction
Main parts:
P-type semiconductor body
Thin silicon dioxide insulating layer
Array of gate electrodes
When a positive voltage is applied to the gate:
Holes are repelled
Read MoreUnderstanding Adaptive Passive Vibration Absorbers and AVC Systems
Adaptive Passive Vibration Absorber (APVA) & Methods: An Adaptive Passive Vibration Absorber is a device that reduces unwanted vibrations in machines or structures. Unlike normal (fixed) passive absorbers, an APVA can adjust its own properties — such as mass, stiffness, or damping — to work effectively even when the vibration frequency changes. It does not require active control or high power, so it is still considered passive, but it can adapt automatically or semi-automatically to new
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