Diesel filter with a one-piece hydrophobic filter screen cover

Abstract

A diesel filter with a one-piece hydrophobic filter screen lower cover, comprising a housing and a sealing plate, characterized in that a one-piece hydrophobic filter screen lower cover is arranged in the housing, wherein the one-piece hydrophobic filter screen lower cover comprises a lower cover, an inner filter screen holder, and an inner filter screen, wherein the lower cover is formed integrally with the inner filter screen holder and the inner filter screen, wherein the inner filter screen holder is arranged coaxially on the upper side of the lower cover, wherein the inner filter screens are distributed in the side walls of the inner filter screen holder at intervals in the circumferential direction and axial direction, wherein an upper cover is arranged in the housing above the lower cover, wherein a mounting frame for the outer filter element is arranged coaxially on the underside of the upper cover,wherein the fixing frame for the outer filter element is formed integrally with the upper cover, wherein a lower installation groove for the outer filter element is arranged in the lower cover on the outer circumference of the inner filter screen holder, wherein the lower end of the fixing frame for the outer filter element extends into the lower installation groove for the outer filter element, wherein an outer filter element is arranged on the outer circumference of the fixing frame for the outer filter element, wherein an upper installation groove for the outer filter element is arranged in the upper cover on the outer circumference of the fixing frame for the outer filter element, wherein the lower end and the upper end of the outer filter element extend into the lower installation groove for the outer filter element and the upper installation groove for the outer filter element, respectively, wherein an oil inlet is arranged on the sealing plate,wherein an oil outlet pipe is arranged in the inner filter screen holder, wherein a through-hole is arranged in the lower cover between the mounting frame for the outer filter element and the inner filter screen holder, wherein a water storage chamber is arranged on the underside of the housing, wherein the water storage chamber is connected to the through-hole, wherein a water level indicator and a drain pipe are arranged in the water storage chamber.

Description

TECHNICAL FIELD

[0001] The present utility model relates to the physical field of filter devices, in particular to a diesel filter with a one-piece hydrophobic filter screen base cover. STATE OF THE ART

[0002] The diesel filter separates harmful impurities and moisture from the diesel fuel, thereby protecting normal engine operation and reducing wear. A prior art diesel filter includes a housing, a lower cover and an upper cover arranged in the housing, and an outer filter element, a fixing frame for the outer filter element, and an inner filter element are arranged between the lower cover and the upper cover. During installation, the lower cover, upper cover, outer filter element, fixing frame for the outer filter element, and inner filter element must be installed separately. There are many installation steps, resulting in low installation efficiency. CONTENT OF THE PRESENT UTILITY MODEL

[0003] The purpose of the present utility model is to provide a diesel filter with a one-piece hydrophobic filter screen bottom cover, so that the diesel filter with a one-piece hydrophobic filter screen bottom cover is intended to solve the technical problem of low installation efficiency in the prior art.

[0004] A diesel filter with a one-piece hydrophobic filter screen lower cover according to the present utility model, comprising a housing and a sealing plate, wherein a one-piece hydrophobic filter screen lower cover is arranged in the housing, wherein the one-piece hydrophobic filter screen lower cover comprises a lower cover, an inner filter screen holder, and an inner filter screen, wherein the lower cover is formed integrally with the inner filter screen holder and the inner filter screen, wherein the inner filter screen holder is arranged coaxially on the upper side of the lower cover, wherein the inner filter screens are distributed in the side walls of the inner filter screen holder at intervals in the circumferential and axial directions, wherein an upper cover is arranged in the housing above the lower cover, wherein a mounting frame for the outer filter element is arranged coaxially on the underside of the upper cover,wherein the fixing frame for the outer filter element is formed integrally with the upper cover, wherein a lower installation groove for the outer filter element is arranged in the lower cover on the outer circumference of the inner filter screen holder, wherein the lower end of the fixing frame for the outer filter element extends into the lower installation groove for the outer filter element, wherein an outer filter element is arranged on the outer circumference of the fixing frame for the outer filter element, wherein an upper installation groove for the outer filter element is arranged in the upper cover on the outer circumference of the fixing frame for the outer filter element, wherein the lower end and the upper end of the outer filter element extend into the lower installation groove for the outer filter element and the upper installation groove for the outer filter element, respectively, wherein an oil inlet is arranged on the sealing plate, wherein an oil outlet pipe is arranged in the inner filter screen holder, wherein a through hole is arranged in the lower cover between the fastening frame for the outer filter element and the inner filter screen holder, wherein a water storage space is arranged on the underside of the housing, wherein the water storage space is connected to the through hole, wherein a water level detector and a drain pipe are arranged in the water storage space.

[0005] Furthermore, it is provided that a sealing ring is arranged between the lower cover, the upper cover and the housing.

[0006] The effect of the present utility model is positive and obvious compared to the prior art. The lower cover is integrally molded with the inner filter screen holder and the inner filter screen to form a one-piece hydrophobic filter screen lower cover, and the upper cover is also integrally molded with the fixing frame for the outer filter element. During installation, only the one-piece hydrophobic filter screen lower cover, the outer filter element, and the upper cover need to be installed, thereby reducing installation steps and improving installation efficiency. SHORT DESCRIPTION OF THE DRAWING Fig. 1 is a schematic sectional view of a diesel filter with a one-piece hydrophobic filter screen base cover according to the present utility model; Fig. 2 is a schematic representation of a one-piece hydrophobic filter screen bottom cover in a diesel filter with a one-piece hydrophobic filter screen bottom cover according to the present utility model. DETAILED DESCRIPTION

[0007] The present utility model will be further described below in conjunction with the embodiments, but the present utility model is not limited to this embodiment. Any similar modifications related to the present utility model should be included within the scope of the present utility model. The use of top, bottom, front, back, left, right, center, inside, outside, and other directions in the present utility model is for convenience and clarity of description only and does not limit the technical solutions of the present utility model.

[0008] A diesel filter with a one-piece hydrophobic filter screen lower cover according to the present utility model, comprising a housing 1 and a sealing plate 15, wherein a one-piece hydrophobic filter screen lower cover is arranged in the housing 1, wherein the one-piece hydrophobic filter screen lower cover comprises a lower cover 2, an inner filter screen holder 3, and an inner filter screen 4, wherein the lower cover 2 is formed integrally with the inner filter screen holder 3 and the inner filter screen 4, wherein the inner filter screen holder 3 is arranged coaxially on the upper side of the lower cover 2, wherein the inner filter screens 4 are distributed in the side walls of the inner filter screen holder 3 at intervals in the circumferential and axial directions, wherein an upper cover 6 is arranged in the housing 1 above the lower cover 2, wherein a mounting frame for the outer filter element 7 is arranged coaxially on the underside of the upper cover 6,wherein the outer filter element fixing frame 7 is formed integrally with the upper cover 6, wherein a lower outer filter element installation groove 5 is arranged in the lower cover 2 on the outer periphery of the inner filter screen holder 3, wherein the lower end of the outer filter element fixing frame 7 extends into the lower outer filter element installation groove 5, wherein an outer filter element 8 is arranged on the outer periphery of the outer filter element fixing frame 7, wherein an upper outer filter element installation groove 9 is arranged in the upper cover 6 on the outer periphery of the outer filter element fixing frame 7, wherein the lower end and the upper end of the outer filter element 8 extend into the lower outer filter element installation groove 5 and the upper outer filter element installation groove 9, respectively, as in , Fig. 1 to Fig. 2 shown, wherein an oil inlet (not shown in the figure) is arranged on the sealing plate 15, wherein an oil outlet pipe 10 is arranged in the inner filter screen holder 3, wherein a through hole 11 is arranged in the lower cover 2 between the fastening frame 7 for the outer filter element and the inner filter screen holder 3, wherein a water storage space 12 is arranged on the underside of the housing 1, wherein the water storage space 12 is connected to the through hole 11, wherein a water level detector 13 and a drain pipe 14 are arranged in the water storage space 12.

[0009] Furthermore, it is provided that a sealing ring is arranged between the lower cover 2, the upper cover 6 and the housing 1.

[0010] In particular, the person skilled in the art will understand that for the specific structure and principle of the inner filter screen 4, the outer filter element 8, the water level detector 13, the drain pipe 14 and other parts in the present utility model, as well as other points not explained in detail, known solutions in the prior art are adopted, which are not repeated here.

[0011] How this example works: During operation, the diesel fuel flows from the oil inlet to the outer periphery of the outer filter element 8 under the pressure of the oil pump, passes through the outer filter element 8 and the inner filter screen 4, and then flows out through the oil outlet pipe 10. Impurities in the fuel are filtered out by the outer filter element 8, and water in the fuel is separated by the inner filter screen 4. According to the Fig.In the direction of the arrow shown in Figure 1, the separated water flows through the gap between the inner filter screen 4 and the outer filter element 8, downward through the through-hole 11, to the water storage chamber 12. When the water level in the water storage chamber 12 is higher than the detection end of the water level detector 13, the water level detector 13 emits an alarm signal to remind the driver to drain the water. The driver opens the water valve, so that the water in the water storage chamber 12 is drained upward by the pump through the drain pipe 14.

[0012] During processing, the lower cover 2 is injection-molded integrally with the inner filter screen holder 3 and the inner filter screen 4 to form a one-piece hydrophobic filter screen lower cover, and the upper cover 6 is also integrally molded with the outer filter element fixing frame 7. During installation, only the one-piece hydrophobic filter screen lower cover, the outer filter element 8, and the upper cover 6 need to be installed, thereby reducing installation steps and improving installation efficiency.

Claims

[1] Diesel filter with a one-piece hydrophobic filter screen cover, comprising a housing and a sealing plate, characterized bythat a one-piece hydrophobic filter screen lower cover is arranged in the housing, wherein the one-piece hydrophobic filter screen lower cover comprises a lower cover, an inner filter screen holder, and an inner filter screen, wherein the lower cover is formed integrally with the inner filter screen holder and the inner filter screen, wherein the inner filter screen holder is arranged coaxially on the upper side of the lower cover, wherein the inner filter screens are distributed in the side walls of the inner filter screen holder at intervals in the circumferential direction and axial direction, wherein an upper cover is arranged in the housing above the lower cover, wherein a fastening frame for the outer filter element is arranged coaxially on the underside of the upper cover, wherein the fastening frame for the outer filter element is formed integrally with the upper cover,wherein a lower installation groove for the outer filter element is arranged in the lower cover on the outer circumference of the inner filter screen holder, wherein the lower end of the fastening frame for the outer filter element extends into the lower installation groove for the outer filter element, wherein an outer filter element is arranged on the outer circumference of the fastening frame for the outer filter element, wherein an upper installation groove for the outer filter element is arranged in the upper cover on the outer circumference of the fastening frame for the outer filter element, wherein the lower end and the upper end of the outer filter element extend into the lower installation groove for the outer filter element and the upper installation groove for the outer filter element, respectively, wherein an oil inlet is arranged on the sealing plate, wherein an oil outlet pipe is arranged in the inner filter screen holder,wherein a through-hole is arranged in the lower cover between the fastening frame for the outer filter element and the inner filter screen holder, wherein a water storage chamber is arranged on the underside of the housing, wherein the water storage chamber is connected to the through-hole, wherein a water level detector and a drain pipe are arranged in the water storage chamber. [2] Diesel filter with a one-piece hydrophobic filter screen cover according to claim 1, characterized by that a sealing ring is arranged between the lower cover, the upper cover and the housing.

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