A kind of fuel filter
Technical field
The utility model relates to a kind of fuel filter.
Background technique
General rotary-load-type fuel filter filter core and housing integrate, and need more renew cartridge and housing assembly when maintaining, waste of material, and environmental pollution is serious; Rotary filter core embedding is ensconced in filter tank, when operator changes, cannot see filter core, causes in market counterfeit and shoddy goods very many, and quality of product is very poor, cannot guarantee user ' s right.
The patent No. is that 201120201564.3 utility model patent discloses a kind of coarse filter element and smart filter core is integrated in a fuel filter in housing, in filter case, be provided with dividing plate, dividing plate is divided into the inner chamber of filter case coarse filtration chamber and the smart filter chamber being communicated with by the through hole on described dividing plate, in coarse filtration chamber, be provided with the first filter core, in essence filter chamber, be provided with the second filter core, in filter case, be sealed and installed with honeycomb duct, honeycomb duct runs through coarse filtration chamber, honeycomb duct is communicated with oil outlet and smart filter chamber, fuel oil can filter once respectively in coarse filtration chamber and smart filter chamber, realized double-stage filtering.Above-mentioned filter cleaner, compact overall structure, is adapted to mini engine.For heavy-duty engine, it is large that filter cleaner working flow is wanted, and filter precision and resistance require all stricter, filter cleaner volume is larger, above-mentioned filter cleaner cannot meet usage requirement, and part oil pump requires before strainer is arranged on oil transfer pump as Bosch CPN2 Electrocontrolled high-pressure oil pump, and after secondary filter is arranged on oil transfer pump, above-mentioned filter cleaner internal run-through cannot meet system requirements.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of fuel filter.
For solving the problems of the technologies described above, the utility model comprises filter seat, in filter seat, be provided with coarse filtration oil inlet passage, coarse filtration oil discharge passage, essence filter oil inlet passage and essence filter oil discharge passage, detachable strainer cover and the strainer housing of being provided with on described filter seat, described strainer cover and filter seat form smart filter chamber, in essence filter chamber, be provided with smart filter chamber is divided into essence filter oil suction chamber and the smart smart filter core that leaches oil pocket, the outside of described smart filter core is essence filter oil suction chamber, inner leach oil pocket for essence, strainer housing and filter seat form coarse filtration chamber, in coarse filtration chamber, be provided with coarse filtration chamber is divided into the coarse filter element that coarse filtration oil suction chamber and coarse filtration go out oil pocket, the outside of described coarse filter element is coarse filtration oil suction chamber, inner go out oil pocket for coarse filtration, described essence filter oil inlet passage is communicated with essence filter oil suction chamber, the oil outlet of described smart filter core and essence leach oily channel connection, the oil outlet of described coarse filter element is communicated with coarse filtration oil discharge passage, described coarse filtration oil inlet passage is communicated with coarse filtration oil suction chamber.
Described coarse filtration oil inlet passage is symmetrical arranged on filter seat with essence filter oil inlet passage, coarse filtration oil discharge passage is symmetrical arranged on filter seat with essence filter oil discharge passage, described coarse filtration oil inlet passage, coarse filtration oil discharge passage are arranged on the same side, and essence filter oil inlet passage and essence leach oily channel setting at opposite side.
Described filter seat is threaded with strainer cover, and both are provided with O-ring seal by junction plane, and strainer cover is pressed on smart filter core on filter seat.
Described filter seat is threaded with strainer housing, and both are provided with O-ring seal by junction plane, and strainer housing is pressed on coarse filter element on filter seat.
On described filter seat, hand fuel pump is installed, described hand fuel pump is communicated with coarse filtration oil suction chamber.
On described filter seat, be arranged with a plurality of fixed bolt holes.
Described smart filter core oil outlet and filter seat joint are provided with rubber seal.
Described coarse filter element oil outlet and filter seat joint are provided with rubber seal.
Adopt after said structure, the utility model integrates strainer and secondary filter, utilizes bolt that filter seat is fixed, easy for installation.Coarse filtration chamber and smart filter chamber interior separations, outside connection, realize double-stage filtering, meet the requirement of common rail system, so diesel engine do not need to use two independent filter cleaners, thereby make filter cleaner compacter, saved the installing space of internal-combustion engine.The utility model adopts dismountable Placement simultaneously, only needs more renew cartridge during maintenance, and user can observe the quality of filter paper, is conducive to stop to use counterfeit and shoddy goods, guarantees user's rights and interests.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
The structural representation of Fig. 2 for analysing and observe along A-A line.
Embodiment
As depicted in figs. 1 and 2, fuel filter comprises filter seat 1, and filter seat 1 middle and lower part is cast with coarse filtration oil inlet passage 11, coarse filtration oil discharge passage 12, essence filter oil inlet passage 13 and essence filter oil discharge passage 14.Coarse filtration oil inlet passage 11 is symmetrical arranged on filter seat 1 with essence filter oil inlet passage 13, coarse filtration oil discharge passage 12 is symmetrical arranged on filter seat 1 with essence filter oil discharge passage 14, coarse filtration oil inlet passage 11, coarse filtration oil discharge passage 12 are arranged on the same side, and essence filter oil inlet passage 13 and essence filter oil discharge passage 14 are arranged on opposite side.The filler opening of coarse filtration oil discharge passage 12 is positioned at the middle part of filter seat 1, and it is opening down.The filler opening of essence filter oil discharge passage 14 is also positioned at the middle part of filter seat 1, and it is opening up.
Filter seat 1 upper and lower is respectively equipped with columnar connection housing, strainer cover 2 has been threaded on the connection housing on top, both junction planes are provided with O-ring seal 6, for preventing O-ring seal 6 dislocation, are provided for placing the annular groove of O-ring seal 6 on the end face that connects housing.Strainer cover 2 forms smart filter chamber with filter seat 1, in essence filter chamber, be provided with smart filter chamber is divided into essence filter oil suction chamber 21 and the smart smart filter core 4 that leaches oil pocket 22, the outside of essence filter core 4 for essence filter oil suction chamber 21, innerly leach oil pocket 22 for essence, essence filter oil inlet passage 13 is communicated with essence filter oil suction chamber 21, thereby the end cap 41 that when strainer cover 2 is tightened, its underpart compresses smart filter core 4 upper end portions is pressed on smart filter core 4 on filter seat 1, the oil outlet of essence filter core 4 bottoms is sleeved on the filler opening place of essence filter oil discharge passage 14, and both joints are provided with rubber seal 7.The connection housing of the bottom strainer housing 3 that has been threaded, both junction planes are provided with O-ring seal 6, for preventing O-ring seal 6 dislocation, are provided for placing the annular groove of O-ring seal 6 on the end face that connects housing.Strainer housing 3 is made by casting aluminium material, and its underpart is provided with dewatering outlet and water level alarm.Strainer housing 3 forms coarse filtration chamber with filter seat 1, in coarse filtration chamber, be provided with coarse filtration chamber is divided into the coarse filter element 5 that coarse filtration oil suction chamber 31 and coarse filtration go out oil pocket 32, the outside of coarse filter element 5 is coarse filtration oil suction chamber 31, inner goes out oil pocket 32 for coarse filtration, thereby the end cap 51 that when strainer housing 3 is tightened, its lower end internal surface compresses smart filter core 4 underparts just coarse filter element 5 is pressed on filter seat 1, the oil outlet on coarse filter element 5 tops is sleeved on the filler opening place of coarse filtration oil discharge passage 12, and both joints are provided with rubber seal 7.On filter seat 1, be arranged with four fixed bolt holes 8, the installation of being convenient to filter cleaner is fixed.
Hand fuel pump 9 is installed on filter seat 1, and hand fuel pump 9 is communicated with coarse filtration oil suction chamber 31, when diesel engine does not turn round, and can be by hand fuel pump 9 by the Bas Discharged in oil duct.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.Previous embodiment has been described in detail the utility model, and for a person skilled in the art, its technological scheme that still can record aforementioned each embodiment is modified, or part technical characteristics is wherein equal to replacement.In every case within inventive concept scope of the present utility model, any modification of making, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model.