Mechanical Design and Engineering

I was having a conversation with my friend JohnW, a Mechanical Engineer by education and trade, about his latest "small" project. I suggested he should publish and document aspects of his interesting work. But he mentioned he does not have a blog just yet, so I "volunteered" to do it for him right here, as a quick (and hopefully useful) example.

John designed a portable agitator, a device used for mixing low-viscosity liquids or liquids with small-size solids.
Mixing is performed by a propeller driven by an internal pneumatic system, and not using an electrical motor, as shown in the diagram below.


The whole contraption is made of plastic, calculated for a maximum internal pressure of 80 psi.
The liquids are poured in manually, through PRV-07 (features a screw-in lid). The mixed liquid is released through the pinch-valve PRV-06. The lid PRV-01 can be removed (8 screws) for inside cleaning.

The mixing capacity is 1 gallon, but it can be easily scaled, in both dimensions and power.

This agitator was designed to be safely used in the food, pharmaceutical, chemical industries.

Here is a photo of the agitator built to specs.


If anyone is interested in this kind of engineering work, I will be glad to re-direct them to him. John is versatile, works on tight budgets and schedules, and very proficient in Autocad, Inventor etc.

Comments

Post a Comment

Popular posts from this blog

Read analog input of Arduino Due board

Image
The Arduino Due Board has 12 analog inputs (pins from A0 to A11), each of which can provide 12 bits of resolution (i.e. 4096 different values). By default, the resolution of the readings is set at 10 bits, for compatibility with other Arduino boards. It is possible to change the resolution of the ADC with analogReadResolution(). The Due’s analog inputs pins measure from ground to a maximum value of 3.3V. Applying more then 3.3V on the Due’s pins will damage the SAM3X chip. The analogReference() function is ignored on the Due. Analog input pins on Arduino Due Board Example to read from Analog Input: int analogInputA0 = A0; int varA0; void setup() { Serial.begin(9600); analogReadResolution(12); //set ADC resolution to 12 bits } void loop() { varA0 = analogRead(analogInputA0); //read ADC input Serial.println(varA0, HEX); //print as HEX delay(1000); } Read Analog Input on Arduino Due If the code compiled with error: 'analogReadResolution' was not declared in t
Read more

Application Note of Cortex-M3 Embedded Software Development

Image
The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU (datasheet). It is the first Arduino board based on a 32-bit ARM core microcontroller. The Application Note 179 Cortex™-M3 Embedded Software Development , from ARM Information Center, introduces the main features of the ARM Cortex™-M3 processor and describes different aspects of developing software for it. It also covers the migration of existing ARM projects to the Cortex-M3 platform. PDF version available at the bottom of the page. Application Note of Cortex-M3 Embedded Software Development Table of Contents 1. The Cortex™-M3 1.1. Nested Vectored Interrupt Controller (NVIC) 1.2. Memory Protection Unit (MPU) 1.3. Debug Access Port (DAP) 1.4. Memory map 2. Developing software for Cortex-M3 2.1. Exception handling 2.2. Memory Protection Unit (MPU) 2.3. Stack and heap configuration 2.4. Instruction set support 2.5. Bit-banding 2.6. Execution Modes 2.7. Supervisor Calls (SVC) 2.8. System Timer (SysTick
Read more