CN207315559U

CN207315559U - A kind of filter filter tank assembly

Info

Publication number: CN207315559U
Application number: CN201721087230.1U
Authority: CN
Inventors: 吴昌庆; 刘聪聪; 马骁宇; 胡杰; 张伟; 李盈盈
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2018-05-04
Anticipated expiration: 2027-08-28

Abstract

The utility model discloses a kind of filter filter tank assembly, filter core assembly including filter tank and in filter tank, the filter core assembly includes upper end cover, bottom end cover and the filter core between upper end cover bottom end cover, there is drainback passage in the middle part of the filter core, it is characterized in that, it is recessed to form a U-lag to drainback passage direction at drainback passage described in the middle part face of the bottom end cover；The side wall of the U-lag is equipped with the oil return hole that multigroup height differs；Spring is installed, the bottom of the spring is connected with a valve deck, and the valve deck is moved along the U-lag in the U-lag.When the present apparatus can be excessive in filter core resistance or be blocked, part fuel oil is imported into engine by the oil return hole on bottom end cover, ensures that the normal fuel injection of engine uses.

Description

A kind of filter filter tank assembly

Technical field

It the utility model is related to vehicle filter field, more particularly to a kind of filter filter tank assembly.

Background technology

Diesel fuel filter is as engine filtering device for diesel, mainly for separating of the impurity in diesel oil and filtering moisture, Ensure the spatter property into the fuel oil of engine.Filter core is as most critical structure in filter, its filtering accuracy is to systematic influence It is huge.At present, it is recommendation that market upper filter, which usually replaces mileage,：Such as 10000 kilometers of replacements.It is simply normal that this replaces mileage The recommendation of oil product, it is uneven due in the market diesel fuel oil, in oil product situations such as impurity content exceeding index, therefore, very much Filter core, which does not arrive replacement mileage, may have occurred and that the situation that filter core blocks.Filter core, which blocks, will cause engine oil not smooth, Power can not play, high-pressure oil pump load increase, can not be to the timely fuel feeding of engine.

Utility model content

The utility model is existing when filter core blocks in order to solve, and causes high-voltage oil liquid to be accumulated in filter tank, nothing The problem of method carries out fuel feeding to engine.

The utility model provides a kind of filter filter tank assembly to achieve these goals, including filter tank and installed in filter tank Interior filter core assembly, the filter core assembly includes upper end cover, bottom end cover and the filter core between upper end cover and bottom end cover, described There is drainback passage in the middle part of filter core, wherein, it is recessed to drainback passage direction at drainback passage described in the middle part face of the bottom end cover Fall into and form a U-lag；The side wall of the U-lag is equipped with the oil return hole that multigroup height differs；Spring is installed in the U-lag, The bottom of the spring is connected with a valve deck, and the valve deck is moved along the U-lag.

Preferably, the U-lag opening be inwardly convexly equipped with for limiting valve cap movement catch.

Preferably, the catch is annular baffle.

Preferably, oil return hole described in every group is circumferentially spaced is opened on the side wall of the U-lag.

Preferably, the oil return hole is gradually reduced along the opening direction diameter of axle of U-lag.

Preferably, holddown spring is also equipped with the filter tank, the holddown spring is located at the bottom of the filter tank, it is pushed up End is pressed into contact with the bottom end cover.

Preferably, the bottom of the filter tank is additionally provided with dewatering outlet, and the inner wall of the dewatering outlet is equipped with screw thread；Further include and discharge water Plug screw, the drain screw are threadedly coupled with the dewatering outlet.

The effect of the utility model is：When the present apparatus can be excessive in filter core resistance or be blocked, part fuel oil is passed through Oil return hole on bottom end cover imports engine, ensures that the normal fuel injection of engine uses.

Brief description of the drawings

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, drawings in the following description are only described in the utility model Some embodiments, for those of ordinary skill in the art, other attached drawings can also be obtained according to these attached drawings.

Fig. 1 is the sectional view of filter filter tank assembly in the utility model embodiment.

Fig. 2 is the structure chart of filter core assembly.

Fig. 3 is the partial enlarged view at U-lag in Fig. 2.

In the present embodiment figure：1- filter tank 2- upper end cover 3- bottom end cover 4- filter core 5- drainback passage 6-U shape grooves 7- oil return hole 8- spring 9- valve deck 10- catch 11- holddown spring 12- drain screws

Embodiment

In order to make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with attached drawing pair The utility model is further detailed.

Referring to a kind of filter filter tank assembly shown in Fig. 1 to Fig. 3, provided for the utility model embodiment, including filter tank 1 With the filter core assembly in filter tank 1, the top of filter tank 1 is equipped with oil inlet and oil outlet, filter core assembly include upper end cover 2, Bottom end cover 3 and the filter core 4 between upper end cover 2 and bottom end cover 3, the middle part of filter core 4 have a drainback passage, fuel oil through oil inlet into Enter in filter tank 1, flow into drainback passage through filter core 4, most flow out filter tank 1 through oil outlet afterwards.

In the present solution, it is recessed to form a U-lag 6 to drainback passage direction at the middle part face drainback passage of bottom end cover；U The side wall of shape groove 6 is equipped with the oil return hole 7 that multigroup height differs；Spring 8, the bottom of spring 8 and a valve deck 9 are installed in U-lag 6 It is connected, valve deck 9 is moved along the U-lag, realizes the unlatching of oil return hole 7, so as to be connected with blocked fluid so that fluid passes through Oil return hole 7 enters in drainback passage 5.When the present apparatus can be excessive in filter core resistance or be blocked, part fuel oil is passed through into bottom end cover On oil return hole import engine, ensure engine power play and protect high-pressure oil pump not frayed.In microthermal climate, filter In the case that core wax deposition blocks, there is good cold starting performance, there is very strong practice to be worth.

For example, when setting filter core resistance reaches engine boundary requirements 30kpa, spring is set to open, when resistance exceedes During 30kp, amount of spring compression increase, valve deck 9 moves upwards, causes the oil return hole 7 close to 6 opening of U-lag to be opened, fuel oil warp Cross oil return hole and enter engine；When pressure continues rise, valve deck 9 continues up, close to the oil return of 6 opening of U-lag The oil return hole at hole and top opens work at the same time, so as to ensure the vehicle work of engine and oil pump.

When not in use, it should be ensured that valve deck 9 is closed, it is extended to realize naturally by spring 8.This programme is preferred Ground, the catch 10 moved for limiting valve cap 9 is inwardly convexly equipped with the opening of U-lag 6, the use of catch 10, avoids valve deck 9 Excessive amount of motion causes the reliability of spring 8 to reduce.Wherein, in the present embodiment, catch 9 is the annular baffle of inside projection, it is ensured that Its stop limit effect to valve deck 9.

In a preferred embodiment, each group oil return hole 7 is circumferentially spaced to be opened on the side wall of U-lag, to improve Oil return effect.Wherein, in the present solution, oil return hole 7 is gradually reduced along the opening direction diameter of axle of U-lag, this design is opened with oil return hole It is corresponding to open pressure, and Kong Weiyue big, corresponding oil liquid pressure is bigger, therefore in order to ensure can still continue under higher oil pressure Fuel feeding, the design of hole position should be bigger than normal, so as to ensure the vehicle work of engine and oil pump.

In addition, being also equipped with holddown spring 11 in filter tank 1, holddown spring 11 is located at 1 bottom of filter tank, its top and lower end Lid 2 is pressed into contact with, and bottom end cover 2 is fixed and in filter tank 1.Certainly, dewatering outlet is additionally provided with the bottom of filter tank 1, wherein, The inner wall of dewatering outlet is equipped with screw thread；Drain screw 12 is further included, drain screw 12 is threadedly coupled with the dewatering outlet.

Some one exemplary embodiments of the utility model are only described by way of explanation above, undoubtedly, for Those of ordinary skill in the art, can be with a variety of in the case of the spirit and scope without departing from the utility model Mode is modified described embodiment.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as Limitation to the utility model claims protection domain.

Claims

1. a kind of filter filter tank assembly, including filter tank and the filter core assembly in filter tank, the filter core assembly includes upper End cap, bottom end cover and the filter core between upper end cover and bottom end cover, the filter core middle part have drainback passage, its feature exists In,

It is recessed to form a U-lag to drainback passage direction at drainback passage described in the middle part face of the bottom end cover；The U-lag Side wall be equipped with the oil return hole that differs of multigroup height；Spring, the bottom of the spring and a valve deck phase are installed in the U-lag Even, the valve deck is moved along the U-lag.

2. filter filter tank assembly as claimed in claim 1, it is characterised in that in the inside projection of the opening of the U-lag It is useful for the catch of limiting valve cap movement.

3. filter filter tank assembly as claimed in claim 2, it is characterised in that the catch is annular baffle.

4. such as claim 1-3 any one of them filter filter tank assemblies, it is characterised in that oil return hole described in every group is all To being opened on the side wall of the U-lag for interval.

5. filter filter tank assembly as claimed in claim 4, it is characterised in that opening direction of the oil return hole along U-lag The diameter of axle is gradually reduced.

6. filter filter tank assembly as claimed in claim 1, it is characterised in that holddown spring is also equipped with the filter tank, The holddown spring is located at the bottom of the filter tank, its top is pressed into contact with the bottom end cover.

7. filter filter tank assembly as claimed in claim 6, it is characterised in that the bottom of the filter tank is additionally provided with dewatering outlet, The inner wall of the dewatering outlet is equipped with screw thread；Drain screw is further included, the drain screw is threadedly coupled with the dewatering outlet.