CN214092105U

CN214092105U - Fuel filter assembly

Info

Publication number: CN214092105U
Application number: CN202023348669.XU
Authority: CN
Inventors: 张伟; 高阳
Original assignee: BENGBU JINWEI FILTERS CO LTD
Current assignee: BENGBU JINWEI FILTERS CO LTD
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-31
Anticipated expiration: 2030-12-31

Abstract

A fuel filter assembly comprises an oil pipe sub-assembly, a filter base sub-assembly and a fuel fine filter, wherein the oil pipe sub-assembly comprises an oil inlet pipe and an oil outlet pipe, a vertically arranged oil inlet channel and an oil outlet channel are arranged in the filter base sub-assembly, the oil inlet pipe and the oil outlet pipe are correspondingly connected to the upper end of the oil inlet channel and the upper end of the oil outlet channel of the filter base sub-assembly, the fuel fine filter is screwed on the lower side of the filter base sub-assembly, an oil inlet of the fuel fine filter is opposite to the lower end of the oil inlet channel of the filter base sub-assembly, an oil outlet of the fuel fine filter is opposite to the lower end of the oil outlet channel of the filter base sub-assembly, an oil outlet one-way valve is arranged in the oil outlet channel of the filter base sub-assembly, and the one-way conduction direction of the oil outlet one-way valve is consistent with the oil outlet direction of the oil outlet channel. The oil outlet one-way valve is arranged in the oil outlet channel of the filter base sub-assembly, so that the fuel oil backflow caused by the stop of the engine is prevented.

Description

Fuel filter assembly

Technical Field

The utility model relates to a fire oil cleaner assembly.

Background

The existing fuel filter is generally installed on a fuel pipeline, because the position of a common fuel tank is lower than that of an engine, most of the fuel pipelines are obliquely arranged, when the engine works, fuel is pumped out of the fuel tank under the pressure of a fuel pump and enters the engine to be combusted through the fuel filter, after the engine is stopped, the fuel pump does not provide pressure any more, the fuel positioned in the fuel pipe can flow back to the fuel tank at the moment, when the engine is restarted, because no fuel in the fuel pipe needs to be pumped out of the fuel tank, and because the problem of insufficient or discontinuous fuel supply can also occur in the starting stage of an empty fuel state in the fuel pipe, the starting difficulty is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a fuel filter assembly is provided, it is through setting up the check valve that produces oil in the passageway that produces oil of straining a sub-assembly, prevents that the engine from shutting down is the fuel backward flow.

For solving the technical problem the utility model provides a fuel filter assembly, divide the assembly including oil pipe, filter seat subassembly and fuel fine filter, oil pipe subassembly is including advancing oil pipe, go out oil pipe, filter seat subassembly is equipped with vertical layout's oil feed passageway, the passageway of producing oil, advance oil pipe, it connects the oil feed passageway of filter seat subassembly, the upper end of passageway of producing oil to go out oil pipe correspondence, the fuel fine filter connects the downside at filter seat subassembly soon, the oil inlet of fuel fine filter is just right with the oil feed passageway lower extreme of filter seat subassembly, the oil-out of fuel fine filter is just right with the lower extreme of the passageway of producing oil of filter seat subassembly, the passageway of producing oil of filter seat subassembly in be equipped with the check valve that produces oil, the one-way conduction direction of the check valve that produces oil is unanimous with the direction of producing oil of passageway.

The utility model has the advantages that: the oil outlet one-way valve is arranged in the oil outlet channel of the filter base sub-assembly, when the engine works, fuel oil filtered by the fuel oil fine filter passes through the oil outlet channel in the filter base sub-assembly and flows into the engine through the oil outlet pipe, the oil outlet one-way valve in the oil outlet channel is in a conduction state at the moment, when the engine stops, the fuel oil in a pipeline between the engine and the fuel oil filter tends to flow back, the fuel oil in the oil outlet one-way valve in the oil outlet channel is in a closed state at the moment, the phenomenon of insufficient oil supply or interrupted oil supply cannot occur during next starting, and the engine is easy to start.

Drawings

FIG. 1 is a top view of a fuel filter assembly.

FIG. 2 is a left side view of the fuel filter assembly.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Detailed Description

Referring to fig. 1-3, a fuel filter assembly comprises an oil pipe subassembly 1, a filter base subassembly 2 and a fuel fine filter 3, wherein the oil pipe subassembly 1 comprises an oil inlet pipe 11 and an oil outlet pipe 12, the filter base subassembly 2 is internally provided with an oil inlet channel 21 and an oil outlet channel 22 which are vertically arranged, the oil inlet pipe 11 and the oil outlet pipe 12 are correspondingly connected with the upper ends of the oil inlet channel 21 and the oil outlet channel 22 of the filter base subassembly 2, the fuel fine filter 3 is screwed on the lower side of the filter base subassembly 2, an oil inlet 31 of the fuel fine filter 3 is opposite to the lower end of the oil inlet channel 21 of the filter base subassembly 2, an oil outlet 32 of the fuel fine filter 3 is opposite to the lower end of the oil outlet channel 22 of the filter base subassembly 2, an oil outlet one-way valve 4 is arranged in the oil outlet channel 22 of the filter base subassembly 2, and the one-way conduction direction of the oil outlet one-way valve 4 is consistent with the oil outlet direction of the oil outlet channel 22.

The oil outlet one-way valve 4 in the embodiment has the following specific structure and installation mode: the oil outlet one-way valve 4 comprises a vertically arranged fixing pile 41 and a circular elastic sheet 42 arranged on the upper side of the fixing pile 41, the upper side of a fixing seat is connected with the middle of the lower side of the circular elastic sheet 42, the circular elastic sheet 42 is in a hat shape with a high middle and a low periphery, the oil outlet one-way valve 4 is installed at a step in an oil outlet channel 22 of the filter seat subassembly 2, firstly, a bearing part 5 is arranged in the middle of a cavity corresponding to the step, the fixing pile 41 is installed on the bearing part 5, the circumferential edge of the circular elastic sheet 42 is attached to the step surface to form sealing, when fuel flows upwards from the lower side, the fuel circumferentially deforms the elastic sheet under the action of pressure and upwards tilts to form a circumferential opening, the fuel flows out from the formed opening, and then flows downwards from the upper side, and stable sealing is formed because the elastic sheet cannot deform downwards.

The utility model has the advantages that: through setting up the check valve 4 that produces oil in the passageway 22 that produces oil of filter seat subassembly 2, when the engine work, the fuel that filters through fuel fine filter 3 passes through the passageway 22 that produces oil in filter seat subassembly 2, the flow goes through oil pipe 12 and gets into the engine, the check valve 4 that produces oil in the passageway 22 that produces oil is in the conducting state this moment, when the engine stops, the fuel that is located the pipeline between engine and the fuel filter has the trend of backward flow, the check valve 4 that produces oil in the passageway 22 that produces oil is in the closed condition fuel can not backward flow this moment, the phenomenon that the fuel feeding is insufficient or the fuel feeding is interrupted can not appear when starting next time, easily start.

Claims

1. The utility model provides a fuel filter assembly, includes oil pipe subassembly, filter seat subassembly and fuel fine filter, oil pipe subassembly is including advancing oil pipe, go out oil pipe, it is equipped with vertical arrangement's oil feed passageway, the passageway of producing oil to strain seat subassembly, advance oil pipe, go out oil pipe and correspond the upper end of connecting the oil feed passageway of filter seat subassembly, the passageway of producing oil, fuel fine filter connects in the downside of straining seat subassembly soon, the oil inlet of fuel fine filter is just right with the oil feed passageway lower extreme of straining seat subassembly, the oil-out of fuel fine filter is just right with the lower extreme of the passageway of producing oil of straining seat subassembly, its characterized in that: an oil outlet one-way valve is arranged in an oil outlet channel of the filter base sub-assembly, and the one-way conduction direction of the oil outlet one-way valve is consistent with the oil outlet direction of the oil outlet channel.