CN205714515U - A kind of fuel filter assembly of oil-water separation - Google Patents

Abstract

A fuel filter assembly for oil-water separation, including a filter element and a filter seat. The middle and upper part of the filter element is provided with a filter channel, and the middle and lower part of the filter element is provided with a water discharge channel. It is characterized in that a double-headed hollow bolt is arranged in the filter seat. The double-headed hollow bolts are threaded, and the middle part of the double-headed hollow bolts is provided with an oil hole. There is also an oil outlet valve on the channel between the oil inlet valve and the oil outlet hole, and a manual pump is set on one side of the filter seat for positioning and controlling the work of the oil inlet valve and the oil outlet valve. In abnormal working conditions where the engine cannot be supplied with oil, a manual pump is used to supply oil, and the fuel is filtered through a filter element to prevent moisture and particulate impurities from directly entering the engine, which will seriously affect the engine operation, and increase the high-pressure common rail fuel injection quantity and Precise control of injection increases the service life of fuel injectors, facilitates maintenance and improves the flexibility of use.

Description

An oil-water separation fuel filter assembly

technical field

The utility model relates to a filter device, in particular to a fuel filter assembly for oil-water separation.

Background technique

In today's world, automobile exhaust emission has become one of the sources of air pollution, and has attracted more and more attention from consumers all over the world. In order to reduce the pollution caused by automobile exhaust emissions to the environment, all countries have carried out necessary guidance and restrictions on policies. Among them, strict regulations have been set on the nitrogen oxides emitted by exhaust emissions. In order to meet the qualified emission standards, engine manufacturers in Various improvements have been made in technology, and high-pressure common rail technology is the most important technical means. High-pressure common rail requires precise control of fuel injection volume and injection time. Under normal engine operating conditions, fuel is reused after oil-water separation and impurity-removing filtration. However, when the engine fails to supply oil, the current In the existing technology, the fuel is directly supplied to the engine through another oil circuit, that is, the supplied fuel is not filtered and separated from oil and water, and the particulate impurities contained in the fuel will enter the engine, which will accelerate the wear of the nozzle hole; The large amount of water molecule particles contained in the fuel injection nozzle will cause corrosion and seriously affect the engine work, which cannot meet the requirements of high-pressure common rail for precise control of fuel injection volume and injection time, and the manual pumps of existing products are riveted in On the filter seat, it cannot be disassembled for maintenance in an emergency.

Utility model content

Aiming at the problems existing in the prior art, the purpose of the utility model is to design and provide a fuel filter assembly with oil-water separation.

A fuel filter assembly for oil-water separation, including a filter element and a filter seat. The middle and upper part of the filter element is provided with a filter channel, and the middle and lower part of the filter element is provided with a water discharge channel. The double-headed hollow bolts are threaded, and the middle part of the double-headed hollow bolts is provided with an oil hole. There is also an oil outlet valve on the channel between the oil inlet valve and the oil outlet hole, and a manual pump is set on one side of the filter seat for positioning and controlling the work of the oil inlet valve and the oil outlet valve.

The oil-water separation fuel filter assembly is characterized in that a reverse flow prevention valve is arranged below the oil outlet.

The oil-water separation fuel filter assembly is characterized in that the hand pump and the filter seat are in a detachable structure and are fixedly connected by screws.

The oil-water separation fuel filter assembly is characterized in that the filter seat is provided with steel threaded air vent holes.

The oil-water separation fuel filter assembly is characterized in that a water level sensor is set in the water discharge channel.

The oil-water separation fuel filter assembly is characterized in that the oil through hole is in the shape of a ring.

The utility model has a novel structure and a reasonable design. In the abnormal working condition where the engine cannot be supplied with oil, a manual pump is used to supply oil, and the fuel is filtered through a filter element to prevent water and particulate impurities from directly entering the engine, which seriously affects the operation of the engine. , improve high-pressure common rail fuel injection volume and precise injection control, increase the service life of fuel injectors, facilitate maintenance, and improve the flexibility of use.

Description of drawings

Fig. 1 is the sectional structural representation of the utility model;

Fig. 2 is the local structural representation of the utility model;

Fig. 3 is another partial structural representation of the utility model;

In the figure: 1-water level sensor, 2-filter element, 3-double-headed hollow bolt, 4-oil hole, 5-oil outlet hole, 6-filter seat, 7-backflow prevention valve, 8-oil outlet valve, 9- Manual pump, 10-oil inlet valve, 11-screw, 12-venting hole, 13-oil inlet.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings.

A fuel filter assembly for oil-water separation, including a filter element 2 and a filter seat 6, the middle and upper part of the filter element 2 is provided with a filter channel, the middle and lower part of the filter element 2 is provided with a water discharge channel, the filter seat 6 is provided with a double-headed hollow bolt 3, and the filter element 2 and the filter seat 6 are threaded through the double-headed hollow bolt 3, and the middle part of the double-headed hollow bolt 3 is provided with an annular oil hole 4, and the oil hole 4 communicates with the oil inlet valve 7 set on the filter seat 6. The top of the hollow bolt 3 communicates with the oil outlet hole 5 provided on the filter seat 6, an oil outlet valve 8 is also provided on the channel between the oil inlet valve 10 and the oil outlet hole 5, and a manual pump 9 is arranged on one side of the filter seat 6 for Locate and control the oil inlet valve 10 and the oil outlet valve 8 to work.

When the engine is working normally, the oil inlet valve 10 and the oil outlet valve 8 are closed, the fuel enters the filter element 2 from the oil inlet 13, and is filtered by the filter element 2 and separated from oil and water to remove particles, impurities and water. The bolt 3 supplies oil directly to the engine through the oil outlet 5 . When the engine is not working normally, that is, when the fuel cannot be supplied, the manual pump 9 can only be pressed for manual oil pumping. will be opened, and the fuel will be filtered by the filter element 2, flow to the filter passage to the double-headed hollow bolt 3 and suck the oil inlet valve 10, then flow out from the oil outlet valve 8, and then supply oil to the engine through the oil outlet 5 to achieve the purpose, that is, use The above-mentioned structure ensures that the quality of the supplied oil is the same as that supplied under the normal condition under the abnormal condition. The anti-backflow valve 7 is set below the oil outlet 5, in order to prevent the filtered oil from flowing back into the double-headed hollow bolt 3 or the filter element 2 after manual pumping, and cannot be fully used. The manual pump 9 and the filter seat 6 are in a detachable structure, and are fixedly connected by screws 11. There is a sealing rubber pad inside the manual pump 9 to prevent oil leakage. When maintenance is required, the screws 11 can be unscrewed. Compared with riveting, it is reusable and very convenient. Steel threaded vent holes 12 are set on the filter seat 6. The hardness of the steel is high, because the fuel filter also needs to be vented frequently. Compared with the aluminum one, the hardness of the steel is more reliable, and it is not easy to produce aluminum chips falling into the oil passage. And destroy engine normal operation; Water level sensor 1 is set in the water discharge channel, promptly when water level accumulates too much, just automatic alarm, drains and gets final product.

Claims (6)

1. null1. the fuel filter assembly of an oil-water separation，Including filter element (2)、Filter block (6)，Filter element (2) middle and upper part is provided with filtration channel，Filter element (2) middle and lower part is provided with the passage that discharges water，Double-head hollow bolt (3) is set in it is characterized in that filter block (6)，Filter element (2) is threadeded by double-head hollow bolt (3) with filter block (6)，Double-head hollow bolt (3) middle part is provided with oil through (4)，Described oil through (4) inlet valve (10) that arrange upper with filter block (6) is connected，Double-head hollow bolt (3) the top oil outlet (5) that arrange upper with filter block (6) is connected，The inlet valve (10) passage with oil outlet (5) is additionally provided with delivery valve (8)，Filter block (6) side arranges manual pump (9) and is used for positioning and control inlet valve (10)、Delivery valve (8) works.
2. 2. the fuel filter assembly of oil-water separation as claimed in claim 1, it is characterised in that oil outlet (5) lower section arranges and prevents reverse flow valve (7).
3. 3. the fuel filter assembly of oil-water separation as claimed in claim 1, it is characterised in that manual pump (9) and filter block (6) are in dismountable structure, and connect by screw is fixing.
4. 4. the fuel filter assembly of oil-water separation as claimed in claim 1, it is characterised in that steel screw thread air vent (12) is set on filter block (6).
5. 5. the fuel filter assembly of oil-water separation as claimed in claim 1, it is characterised in that the passage that discharges water arranges level sensor (1).
6. 6. the fuel filter assembly of oil-water separation as claimed in claim 1, it is characterised in that oil through (4) is ring-shaped.