Recently, the weather is getting colder and colder, there are car owners always respond to the phenomenon that the trailer relay valve is frozen. It is suspected that the anti blow effect of the drying pipe is not good, so the drying pipe is changed into an independent reverse blow tank dryer. However, from the fault performance and inlet temperature measurement, the fault of the cold trailer valve is not related to the form of the dryer.

The dryer inlet of the North V3 fittings is often more than 70 degrees, and the upper limit of the intake temperature of the dryer is 65 degrees. Only the intake air at this temperature can ensure the efficient work of the dryer. So it is not entirely in the form of the back blowing of the dryer, the inlet temperature is too high is the core reason for the emergence of the valve fault. Only by increasing the spiral tube to reduce the inlet temperature of the dryer to cure the valve failure.

Air dryer is a basic standard in the original air brake of the truck, his role is to make the compressed air from water, become dry air, ensure gas truck brake drying in low temperature in winter, not because of the moisture in the air condenses in the valve, causing the brake failure and braking drag fault. A desiccator is like a sponge that loses its function when it is saturated with water. So what's the way to remove the moisture from the dried particles like a sponge, and to prolong the life of the dryer?

The main ingredients in the V3 drying jar are a lot of water absorbing particles, which can be understood as a common sponge in your life. As you can imagine, when the sponge is filled with water, you have to wring it out before you can absorb it. The same is true of the particles in the drying tank. If the moisture is not removed in time, it will soon fill the water and lose its function.

How to remove moisture to? In the compressed air reaches the standard pressure, unloading valve unloading, using dried air blow drying tank in turn to remove moisture, the purpose of which is dry tank backblowing regeneration device. There are two purposes of blowback, which are life extension.

1, one is the independent gas cylinder back blowing

It is a small gas cylinder with a capacity of 5 liters, which is connected in parallel with the air outlet of the dryer. When the gas cylinder is pressurized, the small bottle is also inflated at the same time. After the air pressure is reached, the dryer releases the pressure, and the dry air in the small cylinder passes through the dryer to blow out the water. This kind of blowback is very easy to identify, and you need to follow the gas path to find the bottle.

2, the other is the use of the vehicle's own gas cylinder

In the dryer after unloading, return a portion of the dried air blowing dryer, dryer using this anti blowing form, the dryer body will have a return valve, and after unloading, can see in the barometer, which a barometer will decrease the pressure of about 50kPa, the the cylinder pressure is in the use of anti blow drying tank.

The purpose of the two anti blowing methods is the same, which can prolong the life of the dryer and make the dryer work more efficiently. But many car drivers have this device, and also regularly replace the drying tank, why is there still water in the gas path?

Winter weather North V3 fittings brake valve frozen, not without braking, brake lag is not back. These two faults are seriously affecting the safety of driving, many friends did not seriously analyze the root cause of the failure, blindly replace the dryer, resulting in economic waste of their own, the failure to eliminate is also of no avail. Here, we hope that the friends can correctly and seriously analyze the causes of the failure, do not blindly replace the modification.