CN216811989U

CN216811989U - Fuel filter

Info

Publication number: CN216811989U
Application number: CN202123377428.2U
Authority: CN
Inventors: 李文涛; 李志勇; 李凯; 戴雨华; 王春英
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-24
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a fuel filter, wherein an oil inlet pipe is provided with a first oil inlet, an oil outlet pipe is provided with a first oil outlet, a filter tank is provided with a second oil inlet and a second oil outlet, a rotating shaft is provided with a first connecting hole and a second connecting hole, the rotating shaft can rotate relative to the filter base and has a first position and a second position, when the rotating shaft is positioned at the first position, one end of the first connecting hole is communicated with the first oil inlet, the other end of the first connecting hole is communicated with the second oil inlet, one end of the second connecting hole is communicated with the first oil outlet, and the other end of the second connecting hole is communicated with the second oil outlet; when the rotating shaft is located at the second position, the first oil inlet is not communicated with the second oil inlet, and the first oil outlet is not communicated with the second oil outlet; the rotating shaft is conical. The rotating shaft in the fuel filter is conical, the conical surface of the rotating shaft is matched with the filter base, the sealing degree can be adjusted through the assembly of the rotating shaft and the filter base, sealing is effectively guaranteed, sealing is not guaranteed through size matching, and the processing cost is reduced.

Description

Fuel filter

Technical Field

The utility model relates to the technical field of engines, in particular to a fuel filter.

Background

The fuel filter is used for filtering harmful particles and moisture in an engine fuel system so as to protect an oil pump nozzle, a cylinder sleeve, a piston ring and the like, reduce abrasion and avoid blockage. Under many special conditions, such as maintenance or emergency rescue power generation, etc. during ocean navigation, a fuel filter needs to be replaced without stopping the engine to maintain normal operation of the engine, the existing fuel filter generally comprises a plurality of filter units connected in parallel, each filter unit comprises a filter base, a filter element, an oil inlet pipe, an oil outlet pipe, a rotating shaft and a filter tank, the filter base is detachably connected with the filter tank, the filter element is positioned in the filter tank, the rotating shaft is inserted in the filter base and can control whether the oil inlet pipe is communicated with the filter tank or not and whether the oil outlet pipe is communicated with the filter tank or not, however, the rotating shaft in the existing fuel filter is cylindrical and is in clearance fit with the filter base, if the rotating shaft is in tight fit with the shaft hole of the filter base, the rotating shaft is blocked and cannot rotate, if the rotating shaft is in too large fit with the shaft hole, fuel oil leakage can be caused, the rotating shaft and the shaft hole of the filter base need strict size matching, the filter element can be smoothly replaced, and the fuel oil is not leaked, so that the processing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fuel filter, which aims to solve the problems that a rotating shaft in the conventional fuel filter is cylindrical, and the rotating shaft is in clearance fit with a filter base, so that the filter element can be smoothly replaced without fuel leakage due to strict size fit, and the processing cost is high.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a fuel filter comprising:

the filter unit comprises a filter base, a filter tank, an oil inlet pipe, an oil outlet pipe and a rotating shaft, the filter base is detachably connected with the filter tank, the oil inlet pipe and the oil outlet pipe are both fixedly connected with the filter base, the oil inlet pipe is provided with a first oil inlet, the oil outlet pipe is provided with a first oil outlet, the filter tank is provided with a second oil inlet and a second oil outlet, the rotating shaft is inserted in the filter base and is provided with a first connecting hole and a second connecting hole, the rotating shaft can rotate relative to the filter base to form a first position and a second position, when the rotating shaft is located at the first position, one end of the first connecting hole is communicated with the first oil inlet, the other end of the first connecting hole is communicated with the second oil inlet, one end of the second connecting hole is communicated with the first oil outlet, the other end of the oil inlet is communicated with the second oil outlet; when the rotating shaft is located at the second position, the first oil inlet is not communicated with the second oil inlet, and the first oil outlet is not communicated with the second oil outlet;

the rotating shaft is conical.

As an optimal scheme of the above fuel filter, the fuel filter further comprises a fixing bolt, the filter base is provided with a through hole, the rotating shaft is provided with a first threaded hole and a second threaded hole, the fixing bolt penetrates through the through hole, the fixing bolt can be in threaded connection with the first threaded hole or the second threaded hole, when the fixing bolt is in threaded connection with the first threaded hole, the rotating shaft is located at the first position, and when the fixing bolt is in threaded connection with the second threaded hole, the rotating shaft is located at the second position.

As a preferable scheme of the fuel filter, the oil inlet pipe and the oil outlet pipe are arranged in parallel.

As a preferable mode of the above fuel filter, the number of the filter unit is at least 3.

As a preferable mode of the fuel filter, the rotating shaft is provided with a control hole.

As a preferable mode of the fuel filter, the fuel filter further includes a first sealing member, and the first sealing member is disposed between the rotating shaft and the filter base.

As a preferred scheme of the fuel filter, the oil inlet pipe is provided with an oil inlet mark, and the oil outlet pipe is provided with an oil return mark.

As a preferable scheme of the above fuel filter, the single filter further includes a first flange and a second flange, one end of the oil inlet pipe and one end of the oil outlet pipe are both fixedly connected to the first flange, the other end of the oil inlet pipe and the other end of the oil outlet pipe are both fixedly connected to the second flange, and the first flange of the single filter is fixedly connected to the second flange of the adjacent single filter. In a preferable mode of the fuel filter, the first flange of the filter unit and the second flange of the adjacent filter unit are connected by bolts.

As a preferable mode of the fuel filter, the fuel filter further includes a second sealing member, and the second sealing member is located between the first flange of the filter unit and the second flange of the adjacent filter unit.

The utility model has the beneficial effects that:

the utility model provides a fuel filter.A filter element is arranged in a filter tank of the fuel filter, when the fuel filter works normally, a rotating shaft is positioned at a first position, fuel in an oil inlet pipe can enter the filter tank, and the fuel filtered by the filter element can flow back to an oil outlet pipe; when the filter element is replaced, the rotating shaft is rotated to rotate the rotating shaft from the first position to the second position, the oil inlet pipe is not communicated with the filter tank, the oil outlet pipe is not communicated with the filter tank, meanwhile, the rotating shaft seals a first oil inlet of the oil inlet pipe, a first oil outlet of the oil outlet pipe is sealed, then the filter tank is detached from the filter base, and the filter element in the filter tank is replaced. The pivot in this fuel filter is the toper, the conical surface and the filter seat cooperation of pivot, can be through the sealed degree of assembly adjustment of pivot and filter seat, the filter seat is provided with the shaft hole, the pivot inserts the shaft hole deepening more, the sealed degree of pivot and filter seat is stronger more, compress tightly the pivot in the filter seat time, the clearance between pivot and the filter seat is minimum, effectively guaranteed sealed, need not guarantee sealed through the size cooperation, the processing cost is reduced, and when rotating the pivot, can extract the part to the shaft hole outward a little with the pivot earlier, in order to conveniently rotate the pivot.

Drawings

Fig. 1 is a schematic structural diagram of a fuel filter according to an embodiment of the present invention.

In the figure:

1. a filter base; 2. a filter tank; 3. a rotating shaft; 4. fixing the bolt; 5. a second seal member; 6. a first oil inlet; 7. a first oil outlet; 31. a first connection hole; 32. a second connection hole; 33. and controlling the hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a fuel filter, wherein a rotating shaft in the fuel filter is conical, the conical surface of the rotating shaft is matched with a filter base, the sealing degree can be adjusted through the assembly of the rotating shaft and the filter base, the gap between the conical surface and the filter base can be minimized when the rotating shaft is in a compression state, the sealing is effectively ensured, the sealing is not required to be ensured through size matching, and the processing cost is reduced.

As shown in figure 1, the fuel filter comprises a plurality of filter units which are fixedly connected in sequence, each filter unit comprises a filter base 1, a filter tank 2, an oil inlet pipe, an oil outlet pipe and a rotating shaft 3, the filter base 1 is detachably connected with the filter tank 2, the oil inlet pipe and the oil outlet pipe are both fixedly connected with the filter base 1, the oil inlet pipe is provided with a first oil inlet 6, the oil outlet pipe is provided with a first oil outlet 7, the filter tank 2 is provided with a second oil inlet and a second oil outlet, the rotating shaft 3 is inserted in the filter base 1, the rotating shaft 3 is provided with a first connecting hole 31 and a second connecting hole 32, the rotating shaft 3 can rotate relative to the filter base 1 and has a first position and a second position, when the rotating shaft 3 is located at the first position, one end of the first connecting hole 31 is communicated with the first oil inlet 6, the other end is communicated with the second oil inlet, one end of the second connecting hole 32 is communicated with the first oil outlet 7, the other end is communicated with the second oil outlet; when the rotating shaft 3 is located at the second position, the first oil inlet 6 is not communicated with the second oil inlet, and the first oil outlet 7 is not communicated with the second oil outlet; the rotating shaft 3 is conical. In the fuel filter, a filter element is arranged in a filter tank 2, when the fuel filter works normally, a rotating shaft 3 is positioned at a first position, and fuel in an oil inlet pipe can enter the filter tank 2 and flows back to an oil outlet pipe after being filtered by the filter element; when the filter element is replaced, the rotating shaft 3 is rotated to rotate the rotating shaft 3 from the first position to the second position, the oil inlet pipe is not communicated with the filter tank 2, the oil outlet pipe is not communicated with the filter tank 2, meanwhile, the rotating shaft 3 seals the first oil inlet 6 of the oil inlet pipe, the first oil outlet 7 of the oil outlet pipe is sealed, then the filter tank 2 is detached from the filter base 1, and the filter element in the filter tank 2 is replaced. The pivot 3 among this fuel filter is the toper, the conical surface of pivot 3 and the cooperation of filter seat 1, can be through the sealed degree of assembly adjustment of pivot 3 with filter seat 1, filter seat 1 is provided with the shaft hole, it is darker that pivot 3 inserts the shaft hole, pivot 3 is stronger with the sealed degree of filter seat 1, compress tightly pivot 3 in filter seat 1 time, the clearance between pivot 3 and the filter seat 1 is minimum, effectively guaranteed sealed, need not guarantee sealed through the size cooperation, the processing cost is reduced, and when rotating pivot 3, can extract the part outward in the shaft hole a little with pivot 3 earlier, in order to conveniently rotate pivot 3.

Optionally, the fuel filter further includes a fixing bolt 4, the filter base 1 is provided with a through hole, the rotating shaft 3 is provided with a first threaded hole and a second threaded hole, the fixing bolt 4 penetrates through the through hole, the fixing bolt 4 can be screwed with the first threaded hole or the second threaded hole, when the fixing bolt 4 is screwed with the first threaded hole, the rotating shaft 3 is located at a first position, and when the fixing bolt 4 is screwed with the second threaded hole, the rotating shaft 3 is located at a second position. The fixing bolt 4 is used for fixing the rotating shaft 3 at a first position or a second position, when the fixing bolt 4 penetrates through the through hole and is in threaded connection with the first threaded hole, the rotating shaft 3 is located at the first position and the relative position of the rotating shaft 3 and the filter base 1 is fixed, and when the fixing bolt 4 penetrates through the through hole and is in threaded connection with the second threaded hole, the rotating shaft 3 is located at the second position and the relative position of the rotating shaft 3 and the filter base 1 is fixed.

Optionally, the oil inlet pipe is arranged in parallel with the oil outlet pipe. Can be conveniently processed and assembled.

Optionally, the number of filter cells is at least 3. When the filter element of one filter unit is replaced, at least 2 filter units work, and the working efficiency is ensured.

Optionally, the spindle 3 is provided with a control aperture 33. The control hole 33 can be inserted with a control component, and the rotation of the control component can drive the rotating shaft 3 to rotate, so that the rotating shaft 3 can be conveniently rotated.

Optionally, the fuel filter further comprises a first sealing element, which is arranged between the rotating shaft 3 and the filter base 1. The first sealing element can seal between the rotating shaft 3 and the filter base 1 and prevent oil leakage.

Optionally, the oil inlet pipe is provided with an oil inlet sign, and the oil outlet pipe is provided with an oil return sign. The oil inlet mark is 'IN' and the oil outlet mark is 'OUT', so that the oil inlet pipe and the oil outlet pipe can be distinguished conveniently.

Optionally, the single filter further comprises a first flange and a second flange, one end of the oil inlet pipe and one end of the oil outlet pipe are both fixedly connected with the first flange, the other end of the oil inlet pipe and the other end of the oil outlet pipe are both fixedly connected with the second flange, and the first flange of the single filter is fixedly connected with the second flange of the adjacent single filter. It can be understood that the oil inlet pipes of the plurality of filter units are communicated, and the oil outlet pipes are also communicated. Two adjacent free oil inlet pipes of the filter and the oil return pipe are connected through the first flange and the second flange, and the assembly is convenient. Optionally, the first flange of the filter unit is connected with the second flange of the adjacent filter unit through bolts.

Optionally, the fuel filter further comprises a second sealing member 5, and the second sealing member 5 is positioned between the first flange of the filter unit and the second flange of the adjacent filter unit. The second sealing member 5 can seal between the first flange of the single filter and the second flange of the adjacent single filter, and oil leakage is prevented.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A fuel filter, comprising:

the filter comprises a plurality of filter units which are fixedly connected in sequence, each filter unit comprises a filter base (1), a filter tank (2), an oil inlet pipe, an oil outlet pipe and a rotating shaft (3), the filter base (1) is detachably connected with the filter tank (2), the oil inlet pipe and the oil outlet pipe are fixedly connected with the filter base (1), the oil inlet pipe is provided with a first oil inlet (6), the oil outlet pipe is provided with a first oil outlet (7), the filter tank (2) is provided with a second oil inlet and a second oil outlet, the rotating shaft (3) is inserted into the filter base (1), the rotating shaft (3) is provided with a first connecting hole (31) and a second connecting hole (32), the rotating shaft (3) can rotate relative to the filter base (1) and has a first position and a second position, and when the rotating shaft (3) is located at the first position, one end of the first connecting hole (31) is communicated with the first oil inlet (6), the other end of the first connecting hole is communicated with the second oil inlet, one end of the second connecting hole (32) is communicated with the first oil outlet (7), and the other end of the second connecting hole is communicated with the second oil outlet; when the rotating shaft (3) is located at the second position, the first oil inlet (6) is not communicated with the second oil inlet, and the first oil outlet (7) is not communicated with the second oil outlet;

the rotating shaft (3) is conical.

2. The fuel filter according to claim 1, characterized by further comprising a fixing bolt (4), wherein the filter base (1) is provided with a through hole, the rotating shaft (3) is provided with a first threaded hole and a second threaded hole, the fixing bolt (4) penetrates through the through hole, the fixing bolt (4) can be in threaded connection with the first threaded hole or the second threaded hole, when the fixing bolt (4) is in threaded connection with the first threaded hole, the rotating shaft (3) is located at the first position, and when the fixing bolt (4) is in threaded connection with the second threaded hole, the rotating shaft (3) is located at the second position.

3. The fuel filter of claim 1 wherein the oil inlet pipe is disposed parallel to the oil outlet pipe.

4. The fuel filter of claim 1 wherein the number of filter cells is at least 3.

5. The fuel filter according to claim 1, characterized in that the spindle (3) is provided with a control opening (33).

6. The fuel filter according to claim 1, further comprising a first seal disposed between the spindle (3) and the filter base (1).

7. The fuel filter of claim 1 wherein the inlet tube is provided with an inlet flag and the outlet tube is provided with an outlet flag.

8. The fuel filter of claim 1, wherein the single filter body further comprises a first flange and a second flange, one end of the oil inlet pipe and one end of the oil outlet pipe are both fixedly connected with the first flange, the other end of the oil inlet pipe and the other end of the oil outlet pipe are both fixedly connected with the second flange, and the first flange of the single filter body is fixedly connected with the second flange of the adjacent single filter body.

9. The fuel filter of claim 8 wherein the first flange of the filter cell is bolted to the second flange of an adjacent filter cell.

10. The fuel filter of claim 8, further comprising a second seal (5), the second seal (5) being located between the first flange of the filter cell and the second flange of the adjacent filter cell.