Note disassembly and re-install a small tanker pump

First, install the portable fuel transfer pump cover. Copper jacket should be coated with a little grease in order to assemble the skeleton oil seal and protection. When assembling the pump cover screws, should be strictly in accordance with the order of twice the diagonal tighten each screw tightening torque knob should be basically the same, so as not to pump cover and pump combination Mifengbuyan.
Secondly, before disassembling the pump cover, must be sanded Woodruff keyway on the shaft, so as not to dismantle the pump cover scratches on Woodruff keyway burr seal, causing leakage.
Again before the pump is attached to the splitter should carefully check the pump pad is damaged, whether upside. Pump installed, should ensure that the center plane of symmetry pump pulley and motor pulley central plane of symmetry in the same plane, pulley does not allow a clear swing and axial runout phenomenon.
At the same time the rotor assembly into thegas fuel pump chamber, the application of hand (or stuck with a stiff shaft keyway hand) rotating rotor blades closer look at whether the retractable blade slot, while up to see if the rotor blades. If the blade above the rotor blades shall be polished. So that high or slightly below the rotor and the rotor.
And before servicing must be reliably cut off the power. Remove the belt from the pulley, so as to avoid accidental injury. Ready tipping the oil container to avoid pump and oil separator inside leak spilled everywhere. Finally, before you re-install the pump, use kerosene to clean the parts, do not allow any dirt sticking to avoid scratching the pump, resulting in a new fault.

Use and maintenance of small tanker vane pump

In the process of using a smalldiesel fuel dispenser, vane pump requires frequent inspection and maintenance.
First, when the test machine and cleaning the tank, can not use water or aqueous oil tankers, in order to avoid the cracking damage diesel transfer pump and other components of internal corrosion and low temperatures.
Secondly, we should regularly clean the filter, especially the newly installed machines and pipes and even more so. With the increasing use of time, dirt tank and pipeline will reduce, filter cleaning cycle can be extended, but generally not more than a month.
Always check again vane pump operation is flexible uniform, without abnormal noise, shaft and pump cover at leaks, pulleys for excessive runout and wobble like.
At the same time the relief valve spring can not be adjusted too tight, otherwise it will make the system pressure, noise and vibration increases, and increased pump bearing wear.
Finally belt tension should be appropriate, the tension is too small, the belt slippery, causing oil shortage or not oil, but also easy to wear belt tensioning force is too large, the motor shaft and the pump shaft is exposed to additional load (axial direction of the vertical axis) increases, could easily accelerate the motor bearings, pump bearings and seal wear.

Verification of temperature on several issues tanker

1. Selection of the thermometer. JJG443-2006 auxiliary fuel dispenser suppliers requirements thermometer measurement range of -25 ℃ ~ 55 ℃, minimum scale value 0.2 ℃. But now most of the measurement technique used in the actual work organization inexpensive glass thermometer, this thermometer has the following defects: ⑴ fragile glass thermometer; ⑵ glass thermometer inside the oil temperature gauges inconvenient; ⑶ glass thermometer bulb reaction slower. Therefore, it is recommended to select digital display platinum resistance thermometer, indexing the minimum value of 0.2 ℃, the measurement range of -30 ℃ ~ 60 ℃, the use of platinum resistance temperature sensor, built-in battery power, the length (50 ~ 70) cm Stainless Steel Pipe protection, not damaged, eye-catching display, rapid, accurate and convenient.
2. Temperature measurements.
2.1 muzzle oil temperature measurements. When measuring the temperature of the oil gun, oil oiling the metal gauges should always flow from excessive temperature thermometer segment, oil temperature muzzle distance of about 1cm, when the thermometer showing the value of a steady and rapid reading (or tanker Indication measurement of 50% to 70% metal Tank capacity), the recording data.
2.2 Metal Tank oil temperature measurement. When measuring the automatic fuel dispenser temperature gauge metal, glass thermometers, oil lines in the upper rope thermometer, temperature segment can reach the central metal gauges limited (you can stick in the other end of a rope, slightly longer than the overflow cover diameter measurement gauges prevent metal thermometer fall), holding a rope into the metal thermometer gauges, temperature gauges central metal segment arrives late after (3 ~ 5) min thermometer bulb section exposed in front of the liquid quickly reading, recording data.
Another method: When the metal gauges measuring emissions of oil, when the oil into about half of the measured temperature in 盛油容 vessel; or when metal gauges discharge of oil, the thermometer temperature gauge section from row was measured at the mouth about 1cm, until the thermometer shows stable reading value, in order to replace the oil inside the metal gauges.

Tanker reasonable error and anti-cheat features

In accordance with the relevant provisions of the fuel dispenser nozzle maximum permissible error ± 0.30%, each tanker is equipped with a tamper-resistant feature, as long as five times more than this range, it will automatically lock. Traffic center will regularly tanker filling stations for technical examination.
A former tanker inspection pass rate of about 70 percent fuel "second look"
There is a reasonable measurement error fuel dispenser pumps have all anti-cheat system
It is reported that the tanker is to rely on internal metering metering chamber means to complete, however, due to the usual wear and tear frequent use, it may cause some errors.

How do small tanker maintenance measures

A combination fuel hand pump dispenser is only suitable for small underground tanks, such as the use of high tank, exhaust pipe Maoyou phenomenon occurs, then make sure the exhaust pipe blocked.
2. Maintenance of electrical parts must be cut off the power, should not live overhaul. Do not damage the surface when you open the explosion-proof box. Intraluminal foreign body should clean dust explosion at a clean re-install the cable should be well sealed, metal pads, gaskets can not be lost, not the number of missing screws, tighten and reliable performance to ensure proof electrical components.
3. To avoid the use of oil gun oil filler pipe percussion gun is not normal operating oil container, such as by pressing the switch, to avoid damage to the oil gun, causing oil spills. Regularly check and tighten the stop screws on the injection tubing, injection tubing to prevent the roots loose, damaged.
4, the relief valve on the machine pumps and manual gas pump combination on the adjustment screw for adjusting the pressure of the pump, thereby regulating the discharge of small oil tanker. Has been adjusted at the factory. After long-term use, such as the discharge of oil dropped, the adjustment screw can tighten inward to increase the pump pressure, but not more than 0.3MPa, the exhaust oil to meet the requirements.
5, underground storage tanks be cleaned regularly to keep the oil clean.

HTF large pump noise Cause Analysis

Conducting oil mechanical pump, heat pump noisy mainly due to bearing damage or thermal oil circulation pump cavitation phenomena due to high temperatures and thermal oil pump vibration generated support causes of instability caused due to long-term contact HTF pump operation, users use during the course of the oil bearing chamber is not changed frequently, resulting in long-term high-speed bearing long-term operation in the case of poor lubrication conditions caused by thermal oil pump bearing failure, which is conducting oil pump noise. HTF pump should be maintained on a regular basis in daily production, cleaning, the timely replacement of the bearing housing to the bearing lubrication oil. Once the bearing is damaged bearings should be replaced to avoid damage to the pump to produce other components. in addition, the newly installed clients in the use of thermal oil pumps are often used for the first temperature rise too fast or oil rise too high. This will cause HTF produce gas in the pipeline, will instantly explode when these gases in the process of conducting oil pump delivery cycle by conducting oil pump, so when conducting oil pump noise. HTF pump should be used for the first time, the oil should rise slowly and start conducting oil pump, gradually open the inner pipe vent pipe cleaner exhaust gas after the official use thermal diesel hand pump. Yet another is conducting oil pump is installed and export pipeline is not marked anchor or anchor cause instability when using thermal oil pump generates a huge pipe resonance, it will generate noise. it should be a solid pipeline of timely support. I have many years of conducting oil pump production history, production specifications, product safety, long service life can be for the majority of thermal oil pumps provide customers with strong technical guidance free of charge. welcome customers to buy our products conducting oil pump.

Small tanker measurement accuracy analysis

Small fuel dispensing pump metering accuracy analysis: Small tanker flowmeter is generally performed using a standard amount Jane metrology, the oil volume measured value indication is shown on the counter volume, standard volume of fluid injected into the vessel is another indication of the volume occurs, the difference between the two values is called meter absolute error of the measured volume, the relative error E for its measurement accuracy: E = (VJ-Vs) / Vs x100% of which: VJ- metered the oil indicated value on the display panel. The actual volume measured in standard containers Vs- indication. Visible small tanker still has his error exists.
From the above equation, E> 0, it means more than VJ Vs, measurement meter display that shows the value of the container is greater than the standard, less hair oil tanker to the user. E <0, ie, the oil tanker multiple users, for two reasons showing error generated more complex, including the systematic errors and random errors. Systematic errors may be suitably compensated by adjustments. We use the adjustment mechanism to adjust the actual displacement flow meter, flow meter is to compensate or correct systematic errors, in order to improve the accuracy of the meter. Factors affecting measurement error problem of small tankers also have a lot of. So sometimes can not blindly suspect misconduct fuel dispensing equipment