Q:The main difference between hydraulic circuit and pneumatic circuit

I. pneumatic basic circuit is the basic component of pneumatic circuit, and complex pneumatic operation system is composed of one or more basic circuits. Compared with hydraulic, pneumatic circuit has its own characteristics:1, an air compressor can simultaneously supply gas to multiple circuits, while hydraulic pumps generally provide only one loop.2. The compressed air will be discharged into the atmosphere directly after the end of the cycle. No hydraulic drive will be necessary to recover the oil into the tank.3, air senior lubrication performance is poor, need additional oil supply device.Two, through the introduction of the previous articles, we generally understand the hydraulic circuit and the use of pneumatic circuit, as well as related presentations, and then we will explore how the cylinder should be chosen.Standard cylinder selection process is generally based on the needs of the job to determine the type of cylinder, installation forms, working pressure, cylinder and stroke, cylinder standard series and product samples for selection, gymnastics as;1, the cylinder output size of the load by 1.15~2 times to select, and accordingly determine the cylinder bore.2, according to the implementation of the agency's travel requirements to determine the cylinder piston stroke length, usually need to leave the margin of 5-20mm.3, according to the speed of the piston movement, select the appropriate inlet diameter, the greater the value, the faster the speed. In order to make the speed steady, a cylinder with a buffer device can be used.

Q:used as the form of a connecting rod or piston in an automobile crankshaft. What is the minimum allowable value for such a hydraulic cylinder?. This way, the supply of oil cylinder in the rear, I ask the output cylinder allowed the maximum number of transfer, such as cooling good, the highest output can be transferred. How many manufacturers are there in the market?.

Spinning speed, no speed. Why do you have to do this? Why don't you just use a hydraulic motor directly?

Q:Hydraulic oil? Refrigerant? Brake night? What are they? What's the function of it?

Cooling liquid is used for automobile engine cooling, winter antifreeze, corrosion protection, waterproof scaleLubricating fluid is oil and gear oil, such as ease the friction between the piston and the cylinder wall in the engine

Q:What can be used in hydraulic equipment factory

Hydraulic systems are widely used in today's construction machinery. Although there are electrical, pneumatic or mechanical systems to choose from, hydraulic systems have been used more and more. For example, on many excavators, the hydraulic system is used to lift and lower the boom, move the bucket, and perform the turn motion of the upper structure of the machine.Why use a hydraulic system? There are many reasons, partly because of the wide use, high efficiency and simple characteristics of the hydraulic system in power transmission. The task of a hydraulic system is to change power from one form to another.

Q:This is the model of a hydraulic buffer tank used on an oil rig. Who can explain the meaning of this model to me, especially the meaning of 550*905, and also provide the best drawings

HSG--- double acting single piston hydraulic cylinder, piston type K--- card key, 01--- for the Y type sealing ring, 160/110E--- bore diameter is 110, 160, a pressure of 16MPa, 5221---5 said the cylinder head or cylinder middle flange connection, 2 piston rod end thread, 2 (second 2) the cylinder head end buffer 1 oil port internal thread; 550 stroke, 905 for the minimum installation distance.

Q:2. To make the piston move at 5m/min, what is the flow rate of the input cylinder L/min?

What's the program for a cylinder? It won't be 5MQ=AV/SQ flow, A area, V speed, S travel timeSet the time to 1 minutesO=1962.5*10^-6 (M^2) * 5 (m/min) *I=9812.5*10^-6 (m^3/min) =9.825*L/min

Q:press the stroke 3CM, and then use the shearing machine as nitrogen cylinder return stroke, and then press down again 3CM.Consult you, 300 tons of hydraulic cylinder pressure, 28 MPa downward pressure stroke 3CM, and then use a shear plate as nitrogen cylinder return, and then press down again 3CM. 40 times per minute, OK? Is it feasible to do so?I would like to refer to the principle of shearing machine, to do a 3CM stroke 300 tons hydraulic press. Is that feasible? Since I need a very short stroke, I would like to use an ordinary larger cylinder instead of a fast cylinder. The return trip would also like to use nitrogen, which would make the hydraulic part the simplest, not knowing whether I was right or not

Both pendulum shearing machine and gate shearing machine adopt single acting hydraulic cylinder! Jianhu Huabo hydraulic guillotine shears is accumulator return

Q:Application of hydraulic and pneumatic in industry

This in the "SMC pneumatic service network" - technical article, there is an article devoted to pneumatic applications, you can look under,

Q:We have to design a manual plunger water hydraulic pump, but the wall thickness of the cylinder will not be designed and checked. I follow the sigma delta is not less than PD/2[design is out of 10mm thick, but the teacher said 5mm can withstand the pressure of 150MPa, the material with corrosion resistant stainless steel can. Some of my parameters are the maximum cylinder pressure 140MPa, cylinder size d=18mm (can also be smaller), length 60 ~ 80mm, how can I design wall thickness? thank you very much indeed

The maximum allowable internal pressure [P] formula for a thick walled tube: [P] = [sigma] (K^2-1) / (K^0.5, K^2): K=D/dAccording to the latter company, you can count it back.

Q:always have hydraulic oil leakage, please expert advice, with what seal can avoid, the best zero leakage.

High pressure and high speed will result in high temperature at the sealing place. The sealing wear and aging will be very quick, even if the trial production effect is ideal, the actual use will be a problem.Increase the surface finish and hardness of piston rodImprove the wear resistance of sealing material at high temperatureIncrease seal quantity, multi stage seal