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Questions tagged [pneumatic]

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5
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0answers
75 views

I want to understand this pneumatic circuit

I have trouble understanding the following pneumatic circuit diagram: I am new to reading circuit diagrams and i am unfamiliar with some of the symbols. I would appreciate if somebody could explain ...
0
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0answers
35 views

How to size the required Pneumatic cylinder

I am trying to calculate the required size of pneumatic cylinder required to perform a simple compressing motion. I wish to reduce the volume of the material by half, so have the volume dimensions ...
1
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0answers
10 views

Choosing a blower for a Pneumatic Conveyor

Basically we are designing a pneumatic conveyor system for transferring 11 tons of beans per hour. We need to decide on the specifications of the blower. What are the calculations necessary to decide ...
1
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1answer
22 views

Pneumatic cylinder: Pressure rating

I want to create a Pneumatic cylinder, The purpose is, Inside it will will contain a Nylon piston, and one end will be filled with clay. Cylinder will be closed from either side using end caps, which ...
0
votes
1answer
28 views

How do I connect pneumatic components with metal tubing?

I'm building a small pneumatic control cabinet with a couple filters, regulators, valves, and flow restrictors. I had started by using 8 mm push-to-connect fittings and nylon tube, but it seems I can ...
1
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1answer
23 views

What is the “quick bleeder valve” in this tool changer pneumatic schematic (and other questions)?

I'm building a CNC router around a HSD ES330 spindle motor that has pneumatic tool-changing ability. The manual recommends the following pneumatic circuit: I'm not sure I understand the purpose of ...
1
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1answer
35 views

Why were pneumatic thermostats commonly installed in buildings?

According to Wikipedia, pneumatic thermostats were invented after electric thermostats. Yet this article claims that "at least 25 percent of U.S. commercial buildings are served by pneumatic controls,...
1
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1answer
17 views

Best balance of electrical and pneumatic control lines in CNC router table?

I'm building a 4' x 8' gantry-style CNC router table. The spindle motor uses pneumatics to power its draw bar (for automatic tool changes). There are three separate pneumatic supply lines that go to ...
1
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2answers
92 views

What's the difference between a vacuum regulator and pressure regulator?

When browsing through pneumatic parts, I notice that some vendors specify different components for pressure regulator and vacuum regulators. SMC for example does this. I'm curious why vendors would ...
0
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2answers
45 views

Is it standard practice to use a pressure relief valve as a pressure regulator?

I'm attempting to understand the difference between a pressure relief valve and a pressure regulating valve. From my research far, I've come to the following conclusion: Pressure relief valves are ...
1
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1answer
105 views

How do you interpret a pneumatic regulator symbol?

I'm an EE trying to interpret a pneumatic schematic and have a few questions regarding the symbols being used. I've come across two different regulator symbols (or so I believe them to be regulator ...
0
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0answers
12 views

What are typical efficiencies of thermocompressors acting on air?

Thermocompressors use a high pressure gas to draw in low pressure gas, resulting in a larger volume of medium pressure gas. Some googling showed mainly thermocompressors using steam, but I suppose it ...
0
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1answer
34 views

How to maintain a static negative pressure in a valve?

My target is to create a valve with multiple inlet capillaries. And my output is a pipe of a larger diameter. I do not want to use any electrical systems, and at the same time, I want to maintain ...
0
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0answers
20 views

Chemical or corrosion related concerns safety concerns with mating brass threaded & quick disconnect couplings to aluminum/stainless steel fittings

A part from the mechanical mating concerns - I need to know if there are any chemical or corrosion related concerns with connecting threaded & quick disconnect brass fittings with stainless steel ...
0
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1answer
35 views

What type of pneumatic valves would represent the valves in the schematic?

What type of pneumatic solenoid valves would represent the valves in the schematic? Specifically, the lower valves could be represented by a 5 port 4 way 2 position valve. This is because there is ...
2
votes
1answer
37 views

Pneumatic actuator capable to achieve 5m/s?

Is there a pneumatic actuator capable to achieve 5m/s and will be good idea for constant work? I know SMC have up to 3m/s, but I can't find faster.
3
votes
1answer
46 views

How to connect a pneumatic cylinder to a door?

I have this pneumatic cylinder that I wish to connect to a wooden door in order to make it kinda like a Star wars door. I'm wondering what the best way to connect the cylinder to the door would be. ...
1
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2answers
33 views

Cylinder Reconditioning [closed]

When reconditioning of a pneumatic cylinder, which fit between piston and cylinder is required? and how much tolerance between mating parts is required?. Will surface finish inside of cylinder play a ...
2
votes
2answers
208 views

Lpg cylinder to compressed air tank

I am building a small robot having pneumatic system. I am using 12v car tyre inflator as my compressor.But i didn't find any 3ltr to 6ltr standardrd air tank. Can i convert my old 3ltr lpg tank into ...
1
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0answers
21 views

Air demand for powder fluidization system

I need a good estimate of the air demand for a system to fluidizde a powder. We a have silo with a 60° cone and a rotary cell feeder attached to the opening in the cone. The powder (fine powdered ...
0
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0answers
21 views

Compressors - Pneumatic machines

I'm struggling to check if an air compressor is appropriate to provide air to a group of pneumatic machines. The compressor gives an air flow at a given pressure, so what I did was to use catalogues ...
1
vote
1answer
88 views

How can I connect a silicon hose with 2mm inner diameter to a smaller 1,9mm port

The biggest diameter of my pressure sensor input port has a size of 1.93 mm. The silicon hose which I want to connect with the sensor's port has an inner diameter size of 2.0 mm. My honeywell ...
0
votes
1answer
885 views

How to uninstall SIMATIC STEP 7-Micro/WIN V4.0.8.06?

I recently installed SIMATIC STEP 7-Micro/WIN V4.0.8.06 but cancelled the installation after some steps. But the program appears in the control panel and when I try to uninstall it, the error:- "Did ...
1
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1answer
187 views

Calculating piston force for pneumatic vs hydraulic

I'm trying to calculate piston force pressures for double acting pistons for pneumatic and hydraulic pressures. I found the following formula for calculating both $$\text{Force} = \frac{\text{...
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0answers
27 views

Proper way to power/use a vacuum cylinder?

I'm considering using a vacuum cylinder in my project (like these ones) to lift sheets of cardboard, but being new to mechanical engineering I'm not at all sure what I need to attach to operate one, ...
1
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1answer
48 views

Hydraulic Arm - Handbrake

I am researching a system that appears to have a hydraulic arm with some kind of "handbrake" as pictured below: System Description: Table that can raise and lock into place Locking mechanism ...
0
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1answer
52 views

Rotary Screw Air Compressor

I have a 50 HP screw compressor that has just began to load and unload within 10 seconds when previously would take between 40 and 60 seconds. Nothing has been added or removed from the system. Any ...
2
votes
1answer
60 views

What material properties matter when selecting a material to withstand a specific pressure (as a sealed tank)?

I want to design a tank to hold liquid propane. The proposed tank would have one inlet valve, one output valve, and no sharp edges. I've read that the pressure required to maintain propane in a liquid ...
1
vote
2answers
61 views

Air flowrate required for testing a pneumatic cylinder?

First time designing with pneumatics here. I want to build a continuous use device (with ~30 back and forth actuation per minute) but do not currently have access to a large compressor. Is there a ...
2
votes
2answers
124 views

Rules of thumb for sizing an air pump piston?

I am working on a design for a small air pump that uses a single piston. When choosing a piston I have two parameters diameter and stroke. So, I can make it fatter and shorter, or skinnier and longer,...
0
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0answers
24 views

Is it practical to move mechanisms from equipment roof to its side?

I purchased a batch oven and had to remove all the systems before transport. The manufacturer mounted many mechanisms on the roof and only the operator panel is on the side. I would like to also have ...
1
vote
1answer
54 views

pneumatic solenoid operation?

Any idea on how this type of pneumatic solenoid works? I know that NC is normally closed, NO normally open, but not sure how air flows? Thanks!
2
votes
1answer
787 views

How strict is the direction of air flow in a single direction pneumatic solenoid valve?

I am currently designing a small pneumatic system that pumps air into an airbag, holds the air in, then releases it to the atmosphere. Each pump in the system actually feeds two sets of airbags and ...
3
votes
2answers
134 views

Are precision pneumatics possible?

I've seen some of the robotics competitions use pneumatic actuators for brute force actions ( like a hammer or lift ), but nothing precise. Is it possible to use pneumatics in a more precise scenario?,...
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2answers
118 views

Axial damper type?

I am trying to find again a small plastic damper that I was looking at last year, but forgot the exact name for that type and now I am unable to find it again. Quite frustrating. It is pretty much a ...
4
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0answers
362 views

Estimating Maximum Speed for a Pneumatic Cylinder

I am designing an machine that is going to use a pneumatic cylinder to accelerate a projectile. I have a tentative cylinder specified, and am working on the control and supply side. I have verified ...
3
votes
2answers
135 views

Do non-linear passive pneumatic throttles exist?

On of the more simple throttles is a channel, which is described by the Hagen-Poiseuille equation: $$\Delta P = \frac{8\mu L Q}{\pi r^4}$$ This equation, when rearranged, tells us that the Flowrate $Q$...