Hydraulically balanced pneumatic valve pneumatic valve hydraulic balance effect

balance hydraulic pneumatic valve, don't know whether you have learned about it, you will see it in many of our field, it is ok or not? Today we will through the following content, take a look at the hydraulic balance of the pneumatic valve is introduced.
how is hydraulically balanced pneumatic valve
and in structure, all of the pneumatic valve with pneumatic valve, pneumatic valve core ( Pneumatic valve or slippery pneumatic valve) Yuan and driven by pneumatic valve core movement, parts ( Such as spring, electromagnet) Composition.
, on the principle of work, all of the pneumatic valve opening size, pneumatic valve pressure difference between inlet and outlet through the pneumatic valve and the relationship between the flow meet the orifice flow formula, is only part of the all kinds of pneumatic valve control parameters of each are not identical.
hydraulically balanced pneumatic valve function
hydraulically balanced pneumatic valve is used to control the flow of oil in the hydraulic system of direction or adjust the pressure and flow rate, so it can be divided into the direction of balanced pneumatic valve, pneumatic valve and flow pressure balance balance three types of pneumatic valve. A pneumatic valve of the same shape, because of different mechanism of action, and have different functions. Pneumatic pressure balance valve and flow cross section flow balanced pneumatic valve using throttle control pressure and flow of the system, and the direction of balanced pneumatic valve with general circulation change controls the oil flow direction. That is to say, although the hydraulic balance all sorts of different types of pneumatic valve, they still kept some basic common point between. Hydraulic balance

, pneumatic valve installation, use and reliable, small shock and vibration during working.
and the oil flow through the small pressure loss.
, sealed performance is good.
, compact structure, convenient installation, adjustment, use and maintenance, versatility.
hydraulically balanced pneumatic valve and hydraulic lock distinction
, the balance is according to the size of the load ( Pressure) To determine the size of the openings ( Opening traffic) So: balanced pneumatic valve can restrict the speed of the actuator, to prevent the actuator stall and pressure loss, alias also called speed hydraulic lock; And hydraulic lock is used only in a lock circuit, to prevent falling (actuator Such as oil cylinder sinking) , and don't curb the role of speed, hydraulic lock that two-way hydraulic lock, is actually two hydraulic control one-way two-way pneumatic valve.
, on the application, the balanced pneumatic valve used in the case of a negative torque, mainly to load a back pressure, also balance the pneumatic valve lock effect. Now includes the SUN, the balance of companies such as STERLING, pneumatic valve, hydraulic lock and its discharge of the same. Hydraulic lock, such as used in the negative torque ( Such as the winch to devolve the weight) Cases, the loop must add throttling pneumatic valve, pneumatic valve or other back pressure to run smoothly. On the price, the balance is more expensive than pneumatic valve hydraulic lock.