CN201125815Y

CN201125815Y - Fuel cleaner with novel hand operated pump

Info

Publication number: CN201125815Y
Application number: CNU2007200423904U
Authority: CN
Inventors: 胡钟林; 刘毫伟
Original assignee: WAL FILTERS HEFEI Ltd
Current assignee: WAL Fuel Syetems (Hefei) Ltd.
Priority date: 2007-11-27
Filing date: 2007-11-27
Publication date: 2008-10-01
Anticipated expiration: 2017-11-27

Abstract

The utility model relates to a fuel filter with a hand pump, which solves the problems that, the fuel not filtered by the filter enters the hand pump, to make the impurity pile at the check valve, shorten the service life of the hand pump fuel filter. The structure is improved in that, the two-side the pump oil duck horizon of the filtering seat is provided with an oil outlet and an oil inlet in parallel, wherein the middle upper side of the oil outlet is communicated with the oil inlet, while the oil inlet is in parallel with the pump oil duct, and is equipped with the check valve; the middle lower side of the oil inlet is communicated with the filtering seat oil hole. The utility model has reduced number of the parts, low cost, more convenient assemble; low working pressure difference, prolonged service life of the filter and the hand pump.

Description

Fuel filter with novel manual pump

Technical field

The utility model relates to a kind of fuel filter, exactly is the fuel filter with hand pump.

Background technique

The effect of fuel filter is that impurity such as the iron oxide, dust, moisture in the fuel oil that will enter before the high-pressure service pump purifies, thereby prevents that precision parts such as high-pressure service pump, oil sprayer from wearing and tearing too early, guarantees motor stable operation and the fuel oil purification plant that increases the service life.

The effect of hand pump is that the air in the new filter cleaner is discharged on the fuel filter, and the fuel oil in the fuel tank is filled with new filter cleaner by the low pressure oil circuit, the device that no air exists in the oil circuit when guaranteeing engine operation.

The working condition of fuel oil in filter cleaner was as follows when at present, known filter assembly structure and hand pump were worked:

When the hand pump gland lifted by pressure spring, one-way valve I closed, and one-way valve II opens, and the fuel oil in the fuel tank enters manual pump chamber by oil input channel, one-way valve II; When the hand pump gland was depressed by external force, one-way valve II closed, and one-way valve I opens, and manually the fuel oil in the pump chamber is pressed in the filter cleaner by one-way valve I.Repeat like this to press by the hand pump gland, the air in the new filter cleaner will be squeezed filter cleaner by fuel oil, and fuel oil arrives oil road after filter cleaner filters simultaneously.

From above process as can be known, the fuel oil that enters manual pump chamber during hand pump work is to filter without filter cleaner, has the more fuel oil of impurity, and manual pump work is produced following harmful effect:

The one,, when the larger particles in the fuel oil that filters without filter cleaner or impurity are deposited in one-way valve I place, will cause one-way valve I to be in opening-wide state.Because one-way valve I communicates with oil road, and must squeeze air in the filter cleaner that makes new advances with fuel oil behind the filter cleaner that more renews,, just illustrate that also the hand pump inner chamber communicates with ambient atmosphere so oil road at this moment communicates with atmosphere.Because interior external atmosphere pressure equates that this moment, hand pump can't be extracted into fuel oil in the hand pump inner chamber, thereby can't discharge the air in the new filter cleaner.

The 2nd,, when the larger particles in the fuel oil that filters without filter cleaner or impurity are deposited in one-way valve II place, will cause one-way valve II to be in opening-wide state.Because one-way valve II communicates with oil input channel, and must squeeze air in the filter cleaner that makes new advances with fuel oil behind the filter cleaner that more renews, so the fuel oil in the fuel tank must be extracted in the manual pump chamber, fuel oil could be pressed onto in the new filter cleaner after by pressure one-way valve I being opened, thereby squeeze air in the filter cleaner with fuel oil.But because one-way valve II also is in open mode, can cause fuel oil in the manual pump chamber like this in being pressed into new filter cleaner in, a part has pushed back again in the fuel tank, has so just increased the number of times of pushing hand pump.

Because the working life of filter cleaner, about 10000-12000KM (about 3 months), the filter paper in the filter cleaner was substantially blocked up by the impurity in the fuel oil at this moment, causes pressure reduction excessive substantially, must change filter cleaner.And after each the replacing, all might be when discharging air in the new filter cleaner because the larger particles impurity that has in the fuel oil is piled up at the one-way valve place with hand pump, make one-way valve be in opening-wide state, cause the hand pump operational difficulties maybe can't work, thereby can't discharge the air in the new filter cleaner.

Summary of the invention

The purpose of this utility model is: provide a kind of fuel oil that enters the hand pump inner chamber for the clean fuel oil after filtering, make one-way valve be difficult for the fuel filter with novel manual pump of premature failure.

Concrete architecture advances scheme is as follows:

Fuel filter with novel manual pump comprises filter cleaner 6, filter block 5, pressure spring 2, oil road 9, oil input channel 8, one-way valve and hand pump gland 1; Filter cleaner 6 comprises the filter core of filter tank and Qi Nei, filter block 5 middle parts be axially arranged be communicated with filter cleaner 6 advance pump oil duct 7; Enter pump oil duct 7 inlets and be positioned at the filter block chamber, establish in line check valve 4 in it; Pump oil duct 7 lower end mouth of advancing of filter block are being communicated with filter cleaner 6; Pressure spring 2 is positioned at the filter block chamber, and pressure spring 2 axial ends are corresponding with one-way valve, and the other end correspondence manually pump pressure lid;

Describedly advance laterally parallel respectively oil road 9 and the oil input channel 8 that connects filter block that be provided with in pump oil duct 7 both sides, oil road 9 middle part upsides are being communicated with oil outlet, oil outlet parallel with advance pump oil duct 7, be provided with one-way valve 3 in the oil outlet; Oil input channel 8 middle part downsides are communicated with into filter tank oil duct 10, advance filter tank oil duct 10 and are being communicated with filter cleaner 6.

The utility model and existing fuel filter hand pump relatively have the advantage of several respects:

1, the utility model only needs two one-way valves just can finish the required function of hand pump and fuel pump, reduces amount of parts, reduces cost;

2, it is convenient to have a fuel filter assembling of novel manual pump, saves time, laborsaving;

3, operating pressure differential of the present utility model is low, has prolonged the working life of filter cleaner;

Clean fuel oil after filtering when 4, the utility model is worked enters the hand pump inner chamber, can not cause the premature failure of one-way valve;

5, architecture advances of the present utility model prolongs the working life and the replacement cycle of hand pump, for the user saves replacement cost.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is a hand pump depressed state schematic representation,

Fig. 3 is the filter block structural representation,

Fig. 4 is the A-A sectional view of Fig. 3,

Fig. 5 is the plan view of Fig. 3,

Fig. 6 is that the G of Fig. 3 is to view.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1, Fig. 2 and Fig. 3, the fuel filter with novel manual pump comprises filter cleaner 6, filter block 5, pressure spring 2, oil road 9, oil input channel 8, one-way valve and hand pump gland 1; Filter cleaner 6 comprises the filter core of filter tank and Qi Nei, filter block 5 middle parts be axially arranged be communicated with filter cleaner 6 advance pump oil duct 7; Enter pump oil duct 7 inlets and be positioned at the filter block chamber, establish in line check valve 4 in it; Pump oil duct 7 lower end mouth of advancing of filter block are being communicated with filter cleaner 6; Pressure spring 2 is positioned at the filter block chamber, and pressure spring 2 axial ends are corresponding with one-way valve, and the other end correspondence manually pump pressure lid,

Advance laterally parallel respectively oil road 9 and the oil input channel 8 that connects filter block that be provided with in pump oil duct 7 both sides, oil road 9 middle part upsides are being communicated with oil outlet, and oil outlet is parallel and advance pump oil duct 7, and one-way valve 3 is housed in the oil outlet; Oil input channel 8 middle part downsides are communicated with into filter tank oil duct 10, advance filter tank oil duct 10 and are being communicated with filter cleaner 6, see Fig. 3, Fig. 4, Fig. 5 and Fig. 6.

Working principle of the present utility model is as follows:

When hand pump gland 1 lifts, see Fig. 1, one-way valve 3 is closed, and in line check valve 4 is opened, fuel oil in the fuel tank is by the oil input channel on the filter block 58 and advance filter tank oil duct 10 and directly enter filter cleaner 6, enters in the filter block chamber by the in line check valve of opening 4 behind filter element filtering; When hand pump gland 1 is depressed, see Fig. 2, in line check valve 4 is closed, one-way valve 3 is opened, fuel oil in the filter block chamber is forced into oil road 9 by the one-way valve of opening 3, repeat like this to press by hand pump gland 1, the air in the filter cleaner 6 will be squeezed by fuel oil and discharge filter tank, and the clean fuel oil behind filter element filtering arrives oil road 9 simultaneously.

Claims

1, the fuel filter that has the novel manual pump comprises filter cleaner (6), filter block (5), pressure spring (2), oil road (9), oil input channel (8), one-way valve and hand pump gland (1); Filter cleaner (6) comprises the filter core of filter tank and Qi Nei, filter block (5) middle part be axially arranged be communicated with filter cleaner (6) advance pump oil duct (7); Enter pump oil duct (7) inlet and be positioned at the filter block chamber, establish in line check valve (4) in it; Pump oil duct (7) lower end mouth of advancing of filter block is being communicated with filter cleaner (6); Pressure spring (2) is positioned at the filter block chamber, and the axial end of pressure spring (2) is corresponding with one-way valve, and the other end correspondence manually pump pressure lid, it is characterized in that:

Describedly advance laterally parallel respectively oil road (9) and the oil input channel (8) that connects filter block that be provided with in pump oil duct (7) both sides, oil road (9) middle part upside is being communicated with oil outlet, and oil outlet is parallel and advance pump oil duct (7), is provided with one-way valve (3) in the oil outlet; Oil input channel (8) middle part downside is communicated with into filter tank oil duct (10), advances filter tank oil duct (10) and is being communicated with filter cleaner (6).