Persistence depends on a large tanker used daily maintenance

Safeguard gas transfer pump, help enhance the life of a small tanker. To know nothing mechanical can permanently using it. Persistent machine using a large part depends on the process used for its maintenance is good or bad. So for those familiar with the use and maintenance of small tankers users, use and maintenance vane pump is generally no big problem. However, issues related to the use of those new users do not know where it is necessary to properly learn about.
A relief valve spring can not be adjusted too tight, or make the system pressure, noise and vibration increases, and increased pump bearing wear.
2, V-belt tension should be appropriate, the tension is too small, the belt slippery, causing oil or no oil shortage, but also easy to wear belt tensioning force is too large, the motor shaft and the cng pump shaft to bear additional load (axial direction of the vertical axis) increases, could easily accelerate the motor bearings, pump bearings and seal wear.

Some features onboard refueling equipment introduced

To be driven by the engine gearbox mounted PTO gearbox external gear pump, pump to generate power, the liquid inside the tank through a pipe into a pump or pump out.
Usually two fuel trucks onboard sodium bicarbonate powder fire extinguishers, sodium bicarbonate powder fire extinguisher suitable for the beginning of flammable and combustible liquids, gases and charged equipment.
Respiratory ventilation valve is fixed at the top of the hydraulic piston pump, the tank pressure to ensure the normal state, to prevent over-pressure or vacuum tank so that the tank sustained damage, but also can reduce the tank liquid evaporation losses.
Car fire dome is usually vortex valve structure, without the aid of any tools, with a four-bar linkage with the vehicle tailpipe exhaust pipe connected directly, without the need to connect a switch or fixing screws, simple and quick to complete the installation and removal of a few seconds. Ignition of flammable materials in a lower concentration of larger establishments, to fully extinguish car exhaust pipe exhaust spark entrained

When refueling operation, the noise and vibration is relatively large.

1, nozzle pump separator filter clogged pipeline is too long, too small and cause vane pump load increase, noise; 2, vane pump relief valve stuck open or adjustment screw up too tight cause; 3, vane pump vanes stuck, leading to increased oil output ripple extent, so that the machine-generated noise and vibration; 4 blades or spring (film) is damaged, causing the tanker noise increases; 5, Zhang belt too tight, sliding vane pump bearing wear, resulting in increased noise tanker; 6, the machine pipe vibration, the solution is to replace the shock hose; 7, when the natural frequency of the output pulse frequency and the oil tanker similar, will lead to the fuel dispensing pump, noise and vibration increases. The workaround is to adjust the vane pump relief valve or replace the oil and gas division, with the racks from vibration pad; 8, motor noise increases. Replace the explosion-proof motor; 9, to the corner of loose bolts or other fasteners tanker loose. Re-tighten the bolts to the corner with the other loose fasteners.

When you start refueling tanker, the flow rate is slow

A mechanical pump filter clogging (including cone filter and oil filter gun); 2, tanker or pipeline leak components lead to a lot of air into the gas into the vane pump Separator greater than the maximum amount of gas. Boot test, oil separator exhaust pipe will exhaust blows, and depending on the oil at a large number of bubbles. Maintenance should first check whether the parts tanker leak exists, then check the oil line and bottom valve Mifengbuyan problem; 3, vane pump failure; ① vane pump or pump relief valve closed lax anti-pad wear, damage is also one of the reasons for the slow drain vane pump; ② badly worn blade or vane pump with debris stuck to the blade, resulting in the individual blades can not pop, but also make the inner vane pump discharge increases, the oil tanker discharge rate change slow. 4, oil separator fault ① oil separator or small float off into the oil, a normally open valve leading to insufficient pressure hyperbaric chamber; ② oil separator too much debris in the lower part of the oil valve resorted to the oil valve can not be effectively open; ③ manual gas pump separator pressure pad superstructure damage, resulting in insufficient pressure hyperbaric chamber Mifengbuyan, drain slower.

Vane pump failure

① gas fuel pump relief valve is not closed. Due to a foreign body (broken shrapnel, etc.) between the relief valve stuck in the valve and valve seat, causing the fluid inside the loop always do and can not flow in the pump, repairs should remove the spool, remove foreign bodies seat; ② Because the pump with the rotor blades and the shrapnel long do high-speed operation, due to fatigue and wear, fracture, resulting in vane pump discharge increases, even when serious loss of pumping action, the pump should be cleared of debris and repair damaged leaves, shrapnel, re-installed after replacing new; ③ vane pump and gas separator combined with the surface of the pump pad breakdown or anti-loaded, can also cause vane pump high-pressure chamber communicates with the low pressure chamber, resulting in the loss of the oil discharge vane pump function; ④ nozzle pump loose rotor and the rotor shaft, causing the shaft idle, then repair or replace the rotor blades need to pump.

Oil separator failure

① fuel hand pump filters (including conical strainer) congested. Filters should be cleaned to remove debris; ② oil separator valve stuck untapped oil tanker caused no diesel hand pump. Maintenance should remove the oil valve, re-installed after clearing the debris, so that it can move up and down freely; ③ small oil separator float into the oil or fall off, resulting in a high-pressure hyperbaric chamber can also cause tanker ④ oil separator pressure pad superstructure damage caused by high-pressure chamber communicating with the pressure chamber, resulting in high-pressure hyperbaric chamber not form leaving no oil tanker; no oil. ⑤ hydrocarbon human separator filter pads or spring seat damage. Replace damaged gaskets; ⑥ oil separator cone valve is not shutting.