Non-return temperature-control valve and modular environment-friendly fuel filter adopting same

Abstract

The invention discloses a non-return temperature-control valve. The non-return temperature-control valve comprises a valve seat and a bonnet; a valve plate is tightly pressed against an annular supporting seat by a spring so as to seal a lower-part round pipe when the spring is in the free relaxed state; double metal sheets are arranged inside an upper cavity; when the temperature at a bonnet oiloutlet is higher than 58 DEG C, the double metal sheets bulge upwards and seal an annular sealing bulge; and when the temperature at the bonnet oil outlet is lower than 28 DEG C, the double metal sheets bulge downwards and are separated from the annular sealing bulge. The invention further discloses a modular environment-friendly fuel filter adopting the non-return temperature-control valve. The fuel filter comprises a casing; a top cover is arranged at the top of the casing; a manual oil pumping structure is arranged inside the top cover; a straight-through type filter element is arranged atthe upper part inside the casing; and a float water-level alarm and the non-return temperature-control valve are arranged inside the casing and located below the straight-through type filter element.By the aid of the non-return temperature-control valve and the fuel filter, air is removed through manual oil pumping, fuel is filtered, the fuel inside the fuel filter is heated by the aid of returned oil of an engine, blockage of the filter element due to inside wax precipitation of the fuel is prevented, and energy is saved.

Description

Technical field [0001] The invention relates to a temperature control valve and a fuel filter. Background technique [0002] With the promulgation of new national environmental protection regulations, people's awareness of environmental protection has increased, and there are higher requirements for fuel filters for vehicles and construction machinery. At present, domestic mainstream fuel filters are mostly composed of cast aluminum mounts, canned star-shaped filter elements, and electronic heaters. This type of filter is heavier, bulky, and has a small dust holding capacity. The heater consumes energy. After maintenance The filter element cannot be sorted and recycled, and the tank is filled with oil, polluting the environment. [0003] If the excess high-temperature fuel burned in the engine cylinder is used to heat the oil temperature at the fuel filter, the energy consumed by the adder can be saved. However, if too much high-temperature fuel enters the fuel filter, the temper...

AI Technical Summary

Problems solved by technology

In addition, when passing high-temperature fuel into the fuel filter, it is also necessary to consider the problem of preventing fuel backflow. If a check valve is added, the volume of the equipment and the complexity of the connection will be increased, which cannot adapt to the actual situation of limited interior space of the car.

When the fuel passes through the fuel filter, the water in it will remain at the bottom of the fuel filter. If the water is not released in time, the filtered water will enter the engine, causing the vehicle to shut down frequently and even the engine to be damaged. In severe cases, it may cause traffic accidents. ACCIDENT

In the prior art, the driver needs to drain the fuel filter based on his experience, and he cannot give a reminder after the accumulated water in the fuel filter reaches a certain level, and the harm caused by the accumulated water in the fuel filter cannot be avoided.

Ordinary water level alarms can monitor the liquid level, but it is difficult to distinguish between fuel and water. It cannot alarm when the water level in the fuel filter is too high. At the same time, the same height of the fuel liquid level does not trigger the alarm.

Images