Novel manual oil delivery pump for compact-type fuel oil filter

Abstract

The invention relates to the field of mechanical manufacturing and discloses a novel manual oil delivery pump for a compact-type fuel oil filter. The novel manual oil delivery pump comprises a manual pump body, a filter, a manual pump pullback spring, a manual pump shell, a manual pump diaphragm, an oil incoming one-way valve, an oil inlet, an oil outgoing one-way valve I, an oil outlet, an oil outgoing one-way valve II and a manual pump seat. When an engine normally works and an oilway is in a short cut, oil only needs to pass through the oil outgoing one-way valve II; the size of a manual pump diesel filter is one third of that of an existing manual pump filter; the novel manual oil delivery pump has the advantages of completeness in oil absorbing and small flowing resistance; the pump body is positioned on a clean side of the filter, so that the novel manual oil delivery pump is small in size and low in working pressure difference, service life of the filter is prolonged, and service life and replacement cycle of the manual pump are prolonged.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a novel compact manual fuel delivery pump for fuel filters. Background technique [0002] Manual fuel pump for fuel filter, the main function is to discharge the air in the fuel system of the car engine, so that the fuel system is filled with fuel; when the filter is replaced and maintained, the filter and pipeline in the fuel system will If a large amount of air is not discharged, it will affect the normal ignition and work of the engine. [0003] 1. At present, the manual oil transfer pumps used in the market are all located at the oil inlet of the filter assembly, that is, the advanced manual oil transfer pump of diesel oil enters the filter. The quality of unfiltered diesel oil is relatively dirty, and the impurity particles in the diesel oil It will be stuck on the one-way valve of the manual oil pump, because the one-way valve cannot be closed, the vacuum degree can...

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Problems solved by technology

[0002] Manual fuel pump for fuel filter, the main function is to discharge the air in the fuel system of the car engine, so that the fuel system is filled with fuel; when the filter is replaced and maintained, the filter and pipeline in the fuel system will have If a large amount of air is not discharged, it will affect the normal ignition and operation of the engine

[0003] 1. At present, the manual oil transfer pumps used in the market are all located at the oil inlet of the filter assembly, that is, the advanced manual oil transfer pump of diesel oil enters the filter. The quality of unfiltered diesel oil is relatively dirty, and the impurity particles in the diesel oil It will be stuck on the one-way valve of the manual oil pump, because the one-way valve cannot be closed, the vacuum degree cannot be formed in the pump cavity, and the exhaust and oil suction cannot be completed.

Make the manual oil transfer pump not work properly

[0004] 2. Due to the change of the oil inlet direction and the increase in the number of check valves, the manual oil pumps for filters on the market are large in size and difficult to arrange in OEMs, especially in commercial vehicles, pickups and other models.

[0005] 3. There is a two-valve manual oil pump for oil-absorbing filters on the market, but when the car engine is working normally, the oil always passes through the oil inlet check valve and the oil outlet check valve of the manual oil transfer pump, and it needs to pass through The narrow and long oil passage in the manual oil transfer pump, so the flow resistance of the manual oil transfer pump is relatively large, which will reduce the service life of the filter and increase the normal maintenance and maintenance costs of the vehicle

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