CN103485857A

CN103485857A - Return oil filter of oil tank

Info

Publication number: CN103485857A
Application number: CN201310380996.9A
Authority: CN
Inventors: 陈迁; 戴小远
Original assignee: Wenzhou Nova Filter Cleaner Co Ltd
Current assignee: Wenzhou Nova Filter Cleaner Co Ltd
Priority date: 2013-08-28
Filing date: 2013-08-28
Publication date: 2014-01-01

Abstract

The invention discloses a return oil filter of an oil tank, which comprises a shell, a connecting cover, a sealing ring and a filter element assembly, and is characterized in that a one-way valve assembly is arranged between a paper element upper cover and the connecting cover and comprises a valve seat, a valve element and a compression spring; the valve seat is formed by punching a steel sheet; a counter bore cavity with an oil discharge hole in the bottom is formed in the middle of the valve seat; a leaf spring outwards obliquely extending is formed at the edge of the valve seat; the counter bore cavity is loaded in from an inner hole of the paper element upper cover and is aligned with a central oil port of the connecting cover; the valve element and the compression spring are arranged in the counter bore cavity; under the effect of the compression spring, the valve element is used for sealing the oil discharge hole from the bottom of the counter bore cavity; the sealing ring is arranged between a paper element lower cover and the bottom of the shell; an oil outlet is formed in the bottom of the shell. The oil filter is arranged in the oil tank, filtering is carried out on return oil of a return oil pipeline of the oil tank, engine oil in the oil tank is kept clean, the service life of an oil outlet filter net of the oil tank is prolonged, and the cleaning work load is alleviated.

Description

The tank drainback filter

Technical field

The present invention relates to a kind of tank drainback filter filtered for tank drainback.

Background technique

At present, in the oil lubricating piping of automobile, only have the fuel-displaced filter that is provided with of fuel tank, filter is not established in the oil return of fuel tank, in the motor car engine working procedure, carbon distribution and gelatinous precipitate, water etc. oxidized under metal filings, dust, high temperature are constantly sneaked into lubricant oil, so the machine oil in fuel tank can be messy, also causes out oil strainer easily to stop up, the working life that goes out oil strainer is short, go out oil strainer and fuel tank needs periodic cleaning, the cleaning amount is large.

Summary of the invention

Deficiency in view of background technique exists, the invention provides a kind of filtration for tank drainback, and the machine oil in fuel tank is kept clean, and improves the working life that fuel tank goes out oil screen, alleviates the tank drainback filter of cleaning amount.

The present invention takes following technological scheme to complete:

The tank drainback filter, comprise shell, connecting cover, seal ring and element kit, connecting cover is contained in the open top of shell, connecting cover is provided with the center hydraulic fluid port and hydraulic fluid port is put on side, seal ring be buckled in shell open top and with the open top riveting of shell, element kit is located at shell inner cavity, element kit comprises the refill upper cover, refill lower cover and refill, it is characterized in that: between refill upper cover and connecting cover, be provided with check valve assembly, check valve assembly comprises valve seat, spool and Compress Spring, valve seat is made by the steel disc punching press, form bottom in the middle of valve seat and establish the counterbore chamber of unloading oilhole, the valve seat edge forms the spring sheet of outward-dipping extension, pack into from the endoporus of refill upper cover in the counterbore chamber, the center hydraulic fluid port of counterbore chamber and connecting cover over against, described spool, Compress Spring is located in the counterbore chamber, under the Compress Spring effect, spool will unload oilhole from bottom, counterbore chamber and carry out shutoff, be provided with seal ring between refill lower cover and outer casing bottom, outer casing bottom is provided with oil outlet.

Above-mentioned tank drainback filter, be located in fuel tank the oil return of tank drainback pipeline is filtered, its center hydraulic fluid port is put hydraulic fluid port with side and is connected with return tube respectively, working principle is: during filter work, tank drainback is put hydraulic fluid port from side and is entered shell inner cavity, enter element kit inside after element kit filters, then from the endoporus of refill lower cover, out enter fuel tank through oil outlet again; If there is element kit, stop up, tank drainback enters counterbore chamber promotion spool from the center hydraulic fluid port unloading port is opened, oil return directly enters element kit inside, then from the endoporus of refill lower cover, out enters fuel tank through oil outlet again, now needs return filter is cleaned.The invention has the beneficial effects as follows: 1. can effectively guarantee cleaning in fuel tank, also use the long-term maintenance of oil strainer totally, improve the working life that oil strainer; 2. fuel tank can not need to clean for a long time, although return filter needs periodic cleaning, the cleaning amount is significantly less than out the cleaning of oil strainer, so can greatly alleviate the cleaning amount; 3. return filter and the existence that goes out oil strainer, play dual protective action to the oil lubrication system of automobile.

As preferably, the both sides breach of described oil outlet after by the inside punching of case body formed.

The accompanying drawing explanation

The present invention has following accompanying drawing:

The structural drawing that Fig. 1 is the tank drainback filter.

Embodiment

As shown in the figure, tank drainback filter of the present invention, comprise shell 1, connecting cover 4, seal ring 5 and element kit, connecting cover 4 is contained in the open top of shell 1, connecting cover 4 is provided with center hydraulic fluid port 42 and hydraulic fluid port 41 is put on side, seal ring 5 be buckled in shell 1 open top and with the open top riveting of shell 1, element kit is located at shell 1 inner chamber, element kit comprises refill upper cover 3, refill lower cover 9 and refill 2, be provided with check valve assembly between refill upper cover 3 and connecting cover 4, check valve assembly comprises valve seat 6, spool 8 and Compress Spring 7, valve seat 6 is made by the steel disc punching press, form bottom in the middle of valve seat 6 and establish the counterbore chamber 62 of unloading oilhole, valve seat 6 edges form the spring sheet 61 of outward-dipping extension, the top elastic top of spring sheet 61 leans against the outer rim bottom of connecting cover 4, pack into from the endoporus of refill upper cover 3 in counterbore chamber 62, the center hydraulic fluid port 42 of counterbore chamber 62 and connecting cover over against, described spool 8, Compress Spring 7 is located in counterbore chamber 62, under Compress Spring 7 effects, spool 8 will unload oilhole from 62 bottoms, counterbore chamber and carry out shutoff, be provided with seal ring 10 between refill lower cover 9 and shell 1 bottom, shell 1 bottom is provided with oil outlet 11, the both sides breach of oil outlet 11 after by the inside punching of case body formed.

Tank drainback filter of the present invention, be located in fuel tank the oil return of tank drainback pipeline is filtered, its center hydraulic fluid port 42 is put hydraulic fluid port 41 with side and is connected with return tube respectively, when work, tank drainback is put hydraulic fluid port 41 and is entered shell 1 inner chamber from side, enter element kit inside after element kit filters, then from the endoporus of refill lower cover 9, out enter fuel tank through oil outlet 11 again; If there is element kit, stop up, tank drainback enters counterbore chamber 62 promotion spools 8 from center hydraulic fluid port 42 unloading port is opened, oil return directly enters element kit inside, then from the endoporus of refill lower cover 9, out enters fuel tank through oil outlet 11 again, now needs return filter is cleaned.

Claims

1. tank drainback filter, comprise shell, connecting cover, seal ring and element kit, connecting cover is contained in the open top of shell, connecting cover is provided with the center hydraulic fluid port and hydraulic fluid port is put on side, seal ring be buckled in shell open top and with the open top riveting of shell, element kit is located at shell inner cavity, element kit comprises the refill upper cover, refill lower cover and refill, it is characterized in that: between refill upper cover and connecting cover, be provided with check valve assembly, check valve assembly comprises valve seat, spool and Compress Spring, valve seat is made by the steel disc punching press, form bottom in the middle of valve seat and establish the counterbore chamber of unloading oilhole, the valve seat edge forms the spring sheet of outward-dipping extension, pack into from the endoporus of refill upper cover in the counterbore chamber, the center hydraulic fluid port of counterbore chamber and connecting cover over against, described spool, Compress Spring is located in the counterbore chamber, under the Compress Spring effect, spool will unload oilhole from bottom, counterbore chamber and carry out shutoff, be provided with seal ring between refill lower cover and outer casing bottom, outer casing bottom is provided with oil outlet.

2. tank drainback filter as claimed in claim 1 is characterized in that: the both sides breach of described oil outlet after by the inside punching of case body formed.