CN202789256U

CN202789256U - Fuel filter

Info

Publication number: CN202789256U
Application number: CN201220439798.6U
Authority: CN
Inventors: 何顺东; 孙桂芝
Original assignee: WAL FUEL SYETEMS (HEFEI) Ltd
Current assignee: Anhui Weil Low Carbon Technology Co ltd
Priority date: 2012-08-31
Filing date: 2012-08-31
Publication date: 2013-03-13
Anticipated expiration: 2022-08-31

Abstract

The utility model relates to a fuel filter. The fuel filter comprises a manual fuel feed pump and a filter element component connected with the lower end of the manual fuel feed pump; wherein the filter element component comprises a filter tank and a filter element; the filter element comprises an upper end cover, a lower end cover and a piece of filter paper that is arranged between the upper end cover and the lower end cover; a filter element cavity is formed among the filter paper and the upper end cover and the lower end cover; and the manual fuel feed pump is a plunger type manual fuel feed pump. In the technical scheme provided by the utility model, the plunger type manual fuel feed pump is used to replace the original diaphragm fuel feed pump, the size is smaller, the output volume is larger, the fuel pumping time for filling up the cavities of the fuel filter with the fuel and finishing the air exhausting in the process of assembling the fuel filter or replacing a component of the fuel filter is largely shortened, the labor intensity of a worker is reduced, and the fuel pumping efficiency is improved.

Description

Fuel filter

Technical field

The utility model relates to a kind of fuel filter, relates to specifically a kind of fuel filter plunger hand oil feed pump.

Background technique

Fuel filter is that the elements such as the fuel pump for engine fuel oil system, oily rail, oil nozzle provide clean fuel oil, fuel filter with oil feed pump be with the Bas Discharged in the new filter cleaner of oil-fired system and the pipeline, and the fuel oil in the fuel tank filled with filter cleaner or fuel pipe by low pressure oil way, exist without air in the oil circuit of oil-fired system when making engine operation, guarantee to start the normal startup of function and work.At present, the filter cleaner on the market with manual oil feed pump be generally diaphragm type, namely when the hand pump gland lifted by Compress Spring, oil outlet one-way valve was closed, in line check valve is opened, the fuel oil in the fuel tank enters manual pump chamber by oil input channel, in line check valve; When the hand pump gland is depressed by external force, in line check valve is closed, oil outlet one-way valve is opened, manually the fuel oil in the pump chamber is discharged pump chamber by oil outlet one-way valve, such repeated presses hand pump gland, 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, so again and again realizes exhaust and oil transportation.But the manual oil feed pump of diaphragm type is because pump displacement is little, the oil transportation amount of namely at every turn pressing is little, need to press for a long time and could fill with fuel oil the filter cleaner chamber and finish exhaust when installation or replacing parts, greatly increase workman's labor intensity, and inefficiency.

The model utility content

The purpose of this utility model is to provide a kind of fuel filter plunger hand oil feed pump, and this oil feed pump volume is little, and discharge capacity is large, and the compressing time when greatly having shortened installation or having changed parts has alleviated workman's labor intensity, has improved working efficiency.

For achieving the above object, the utility model has adopted following technological scheme: comprise manual oil feed pump and the element kit that links to each other with manual oil feed pump lower end, described element kit comprises filter tank and filter core, filter core comprises the filter paper between upper and lower end cap and the upper and lower end cap, form the filter core inner chamber between upper and lower end cap and the filter paper, described manual oil feed pump is the plunger hand oil feed pump.

Described plunger hand oil feed pump comprises the pump housing, pump housing top is provided with piston assembly, described piston assembly is compressed and is fixed by screws on the pump housing by friction top, the outer cover of piston assembly is provided with gland, described gland moves up and down along the centerline direction of the pump housing, and the maximum of gland, minimum stroke are controlled by friction top.

Described piston assembly comprises piston and the Y type oil sealing that matches with piston, is provided with spring in the described piston cavity, and an end and the pump housing of spring lean, and the other end and the gland of spring lean.

The lower end of the pump housing is provided with coupling shaft, the upper end of coupling shaft is threaded with the pump housing, the lower end of coupling shaft is fixed with centration axis, the lower end of centration axis places filter core inner chamber middle part, and the lower end of centration axis is provided with inlet port, is arranged with Compress Spring and oil seal ring on the centration axis, and oil seal ring is controlled by Compress Spring that it is up and down on centration axis, be provided with the hollow oil duct in the coupling shaft, oil seal ring makes the inlet port of the pump housing be in folding and closed condition under the effect of Compress Spring.

Also be provided with oil-feed, oil outlet one-way valve hole in the inner chamber of the pump housing, be respectively equipped with in line check valve, oil outlet one-way valve in oil-feed, the oil outlet one-way valve hole.

Be threaded connection between described filter tank and the pump housing, filter core is fixed in the airtight oil pocket between the pump housing and the filter tank, and described filter core and filter tank are Split type structure.

As shown from the above technical solution, the utility model adopts the plunger hand oil feed pump to replace original diaphragm fuel supply pump, its volume is less, discharge capacity is larger, the pump oil time of when greatly having shortened installation or having changed parts fuel oil having been filled with the filter cleaner chamber and having been finished exhaust, alleviate workman's labor intensity, improved pump oil efficient.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

A kind of fuel filter as shown in Figure 1, comprise manual oil feed pump 1 and the element kit 2 that links to each other with manual oil feed pump 1 lower end, element kit 2 comprises filter tank 3 and filter core 4, filter core 4 comprise upper and

lower end cap

41,42 and upper and

lower end cap

41,42 between filter paper 43, upper and

lower end cap

41,42 and filter paper 43 between form filter core inner chamber 44, manually oil feed pump 1 is the plunger hand oil feed pump.

Specifically, plunger hand oil feed pump 1 comprises the pump housing 11, the pump housing 11 tops are provided with piston assembly 12, piston assembly 12 is compressed and is fixed by screws on the pump housing 11 by friction top 13, the outer cover of piston assembly 12 is provided with gland 14, gland 14 moves up and down along the centerline direction of the pump housing 11, and the maximum of gland 14, minimum stroke are by friction top 13 controls.

Piston assembly 12 comprises piston 121 and the Y type oil sealing 122 that matches with piston 121, is provided with spring 18 in the inner chamber of piston, and an end and the pump housing 11 of spring 18 lean, and the other end of spring 18 and gland 14 lean.

The lower end of the pump housing 11 is provided with coupling shaft 15, the upper end of coupling shaft 15 is threaded with the pump housing 11, the lower end of coupling shaft 15 is fixed with centration axis 16, the lower end of centration axis 16 places filter core inner chamber 44 middle parts, and the lower end of centration axis 16 is provided with inlet port 5, be arranged with Compress Spring 161 and oil seal ring 162 on the centration axis 16, it is up and down on centration axis 16 by Compress Spring 161 control for oil seal ring 162, be provided with hollow oil duct 151 in the coupling shaft 15, oil seal ring 162 makes the inlet port 5 of the pump housing 11 be in folding and closed condition under the effect of Compress Spring 161.

Also be provided with oil-feed, oil outlet one-way valve hole in the inner chamber 17 of the pump housing 11, be respectively equipped with in line check valve 61, oil outlet one-way valve 171 in oil-feed, the oil outlet one-way valve hole.

Be threaded connection between filter tank 3 and the pump housing 11, filter core 4 is fixed in the airtight oil pocket between the pump housing 11 and the filter tank 3, and as preferred version, filter core 4 and filter tank 3 are Split type structure, like this when changing filter element part, only needs more that renew cartridge gets final product, and has saved cost.

The specific works process is as follows:

When pressing manual oil feed pump, gland 14 moves downward, and volume reduces in the pump housing inner chamber 17, and pump housing inner chamber 17 oil pressure rise, and manually the in line check valve 61 at oil feed pump filler opening 6 places is closed, and oil outlet one-way valve 171 is opened, and fuel oil is discharged through filter cleaner oil road 7; When stopping to press gland 14, gland 14 moves upward under the effect of spring 18, this moment, pump housing inner chamber 17 inside formed vacuum, so oil outlet one-way valve is closed, under the atmospheric pressure effect, in line check valve 61 is opened, fuel from fuel tank is sucked into filter cleaner oil input channel 8, advance again and filter cleaner oil pocket 81, the clean fuel oil that filters through filter core 4 enters filter core inner chamber 44, inlet port 5 through centration axis 16 lower ends, centration axis internal oil channel 163, hollow oil duct 151 in the coupling shaft 15, four shunting oil duct junctions 152 of coupling shaft 15, in line check valve 6 and manual oil feed pump filler opening 6 enter in the pump housing inner chamber 17, and section does not form the continuous oil transportation of manual oil feed pump repeatedly like this.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. fuel filter, comprise manual oil feed pump (1) and the element kit (2) that links to each other with manual oil feed pump (1) lower end, described element kit (2) comprises filter tank (3) and filter core (4), filter core (4) comprises the filter paper (43) between upper and lower end cap (41,42) and the upper and lower end cap (41,42), form filter core inner chamber (44) between upper and lower end cap (41,42) and the filter paper (43), it is characterized in that: described manual oil feed pump (1) is the plunger hand oil feed pump.

2. fuel filter according to claim 1, it is characterized in that: described plunger hand oil feed pump (1) comprises the pump housing (11), the pump housing (11) top is provided with piston assembly (12), described piston assembly (12) compresses and is fixed by screws on the pump housing (11) by friction top (13), the outer cover of piston assembly (12) is provided with gland (14), described gland (14) moves up and down along the centerline direction of the pump housing (11), and the maximum of gland (14), minimum stroke are controlled by friction top (13).

3. fuel filter according to claim 2, it is characterized in that: described piston assembly (12) comprises piston (121) and the Y type oil sealing (122) that matches with piston (121), be provided with spring (18) in the inner chamber of described piston, one end of spring (18) and the pump housing (11) lean, and the other end of spring (18) and gland (14) lean.

4. fuel filter according to claim 2, it is characterized in that: the lower end of the pump housing (11) is provided with coupling shaft (15), the upper end of coupling shaft (15) is threaded with the pump housing (11), the lower end of coupling shaft (15) is fixed with centration axis (16), the lower end of centration axis (16) places filter core inner chamber (44) middle part, and the lower end of centration axis (16) is provided with inlet port (5), be arranged with Compress Spring (161) and oil seal ring (162) on the centration axis (16), oil seal ring (162) is controlled it by Compress Spring (161) and is gone up up and down in centration axis (16), be provided with hollow oil duct (151) in the coupling shaft (15), oil seal ring (162) makes the inlet port (5) of the pump housing (11) be in folding and closed condition under the effect of Compress Spring (161).

5. fuel filter according to claim 2, it is characterized in that: also be provided with in line check valve hole and oil outlet one-way valve hole in the inner chamber (17) of the described pump housing (11), be respectively equipped with in line check valve (61) and oil outlet one-way valve (171) in described in line check valve hole and the oil outlet one-way valve hole.

6. fuel filter according to claim 2, it is characterized in that: be threaded connection between described filter tank (3) and the pump housing (11), filter core (4) is fixed in the airtight oil pocket between the pump housing (11) and the filter tank (3), and described filter core (4) and filter tank (3) are Split type structure.