Filter element and filter

Abstract

The filter element comprises an annular filter medium, a first end cover, a second end cover, an annular filter wall, a bypass valve and a drainage pipe, the first end cover and the second end cover are connected to the two ends of the annular filter medium, and the annular filter medium is provided with a central cavity arranged around the central axis of the annular filter medium; the annular filter wall is arranged on the periphery of the annular filter medium, the annular filter wall comprises an annular support and a water blocking medium arranged on the support, and the support is provided with an annular sealing part used for being connected with the inner wall of the filter shell; the bypass valve is arranged on the first end cover and is used for communicating or locking a channel between the central cavity and the outside; the drainage pipe is arranged on the annular filter wall, one end of the drainage pipe is communicated with a drainage opening in the filter shell, and the other end of the drainage pipe extends to the bottom of the filter shell. According to the technical scheme, through the annular filter wall surrounding the periphery of the filter medium, the contact area of fuel oil and the water blocking medium is increased, separated water can be rapidly accumulated at the lower end of the filter wall and is closer to the bottom of the filter shell, and the deposition speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter technical field, especially relate to a filter element and filter. BACKGROUND

[0002] Water blocking medium is an important component in filter, which prevents water from entering fuel system and protects engine from water damage. Water blocking medium effectively prevents water from entering fuel system by its special hydrophobic material and structural design, ensures the purity of fuel, and thus protects the normal operation of engine and prolongs its service life.

[0003] Patent application No. 201280005535.7 discloses a filter cartridge, wherein the through hole 54 in the main body of the plate 50 and leading to the upper covered chamber 52 is provided with a flat filter wall 55, diesel flows from the second chamber 65 through the flat filter wall 55, separates water contained in diesel by polymerization, and the separated water is collected at the bottom of the beaker-shaped main body 21. The above technology can separate water in diesel, but the separation efficiency is low and the deposition speed of water is slow. UTILITARY MODEL

[0004] The main purpose of the utility model is to provide a filter element and filter, which aims to solve the technical problems of the current plate-shaped water filtering structure, low water separation efficiency and slow deposition speed.

[0005] To achieve the above purpose, the filter element provided by the utility model comprises:

[0006] A ring-shaped filter medium, which has a central cavity arranged around a central axis thereof;

[0007] A first end cover and a second end cover connected to two ends of the ring-shaped filter medium;

[0008] A ring-shaped filter wall arranged at the outer periphery of the ring-shaped filter medium, wherein the ring-shaped filter wall comprises a ring-shaped support and a water blocking medium arranged on the support, and the support is provided with a ring-shaped sealing portion for abutting against the inner wall of a filter housing;

[0009] A bypass valve arranged on the first end cover and used for connecting or locking the passage between the central cavity and the outside; and

[0010] A drain pipe arranged on the ring-shaped filter wall, one end of the drain pipe being connected to a drain port on the filter housing, and the other end of the drain pipe extending to the bottom of the filter housing.

[0011] Optionally, the upper end of the ring-shaped support is closed by a plate.

[0012] Optionally, the plate is connected to the first end cover.

[0013] Optionally, the first end cover is provided with a first opening communicating with the central cavity, and an annular protrusion is formed along the first opening, and the plate is connected to the annular protrusion.

[0014] Optionally, the plate is provided with a mounting hole and is connected to the annular protrusion.

[0015] Optionally, the annular sealing part is arranged at the lower end of the bracket.

[0016] Optionally, the annular sealing part is an O-shaped ring.

[0017] Optionally, the upper end and the lower end of the bracket are both formed with a through hole for the drain pipe to pass through.

[0018] Optionally, the upper end of the bracket is provided with a pipe column, the pipe column is connected to the drain port, and is connected to the drain pipe.

[0019] The application further provides a filter, which comprises a shell and the filter element described above, the filter element is arranged in the interior of the shell, and the shell is provided with an oil inlet communicating with the central cavity and an oil outlet communicating with the clean side of the filter element.

[0020] In the technical scheme, the flat filter wall in the plate structure is changed into the annular filter wall surrounding the outer periphery of the filter medium, the contact area of the fuel and the water-blocking medium is increased, and the separated water can be quickly accumulated at the lower end of the filter wall, which is closer to the bottom of the filter shell, so that the deposition speed is increased. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0022] Figure 1 is a structure schematic view of one embodiment of the filter element provided by the present application;

[0023] Figure 2 is Figure 1 a top view;

[0024] Figure 3 is Figure 2 a sectional view of A-A section in

[0025] Figure 4 is a top view of one embodiment of the filter provided by the present application;

[0026] Figure 5 is Figure 4 is a sectional view of the B-B section in figure 1.

[0027] Explanation of symbols: filter element - 100, annular filter medium - 1, central cavity - 1a, first end cover - 2, first opening - 2a, second opening - 2b, annular protrusion - 21, second end cover - 3, annular filter wall - 4, support - 41, through hole - 41a, pipe column - 411, water blocking medium - 42, annular sealing portion - 43, plate - 44, mounting hole - 44a, bypass valve - 5, valve body - 51, hole - 51a, valve core - 52, elastic member - 53, drain pipe - 6, filter - 1000, filter housing - 200, central stand - 201, water level sensor - 202, oil inlet - 200a, oil outlet - 200b, drain port - 200c.

[0028] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In order to better describe and illustrate the embodiments of the present application, one or more drawings can be referred to, but additional details or examples used to describe the drawings should not be considered as limiting the scope of any one of the utility model creation, the presently described embodiments or the preferred mode of the present application.

[0031] In the description of the utility model, it should be pointed out that the directions or position relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like are based on the position relationship shown in the drawings, and are only for the convenience of describing the utility model, and therefore cannot be understood as limiting the utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0033] In view of this, the utility model provides a kind of filter element and filter, Figures 1-3The structure diagram of the filter element of the utility model provides, please refer to Figures 1-3 , the filter element 100 includes annular filter medium 1, first end cover 2 and second end cover 3 connected to the both ends of annular filter medium 1, annular filter wall 4 arranged on the outer periphery of annular filter medium 1, bypass valve 5 arranged on first end cover 2 and drain pipe 6 arranged on annular filter wall 4.

[0034] Specifically, annular filter medium 1 is straight cylindrical, and has a central cavity 1a arranged around a central axis thereof; bypass valve 5 is eccentrically mounted on first end cover 2, and is used to connect or lock a passage between central cavity 1a and the outside (i.e. the clean side of filter element 100). Annular filter wall 4 is connected to first end cover 2 and is sleeved on the outer periphery of annular filter medium 1, and includes an annular support 41, the support 41 is a hollow structure, and a water-blocking medium 42 is embedded in the hollow part of support 41; the water-blocking medium 42 is an oil-water separation film, and when oil passes through annular filter medium 1 and then passes through the water-blocking net, the water-blocking medium 42 can block the water in the oil from passing through. In order to enable all oil to pass through the water-blocking medium 42, the support 41 is provided with an annular sealing portion 43, which is used to abut against the inner wall of the filter housing 200 to separate the water-containing oil and the clean oil. One end of drain pipe 6 is connected to the drain port 200c of the filter housing 200, and the other end extends to the bottom of the filter housing 200, so that water at the bottom of the housing can be pumped out.

[0035] Please refer to Figure 3 It should be noted that a second opening 2b is eccentrically arranged on first end cover 2, and bypass valve 5 is fixedly arranged at the second opening 2b. Bypass valve 5 includes a valve body 51 having a hole 51a, a valve core 52 and an elastic member 53, the valve body 51 is columnar, the hole 51a is located at the central position, the elastic member 53 has elastic potential energy, and can press the valve core 52 to approach the hole 51a, so that the hole 51a can be temporarily closed; the hole 51a is connected to central cavity 1a and the outside of the filter element, and the passage thereof is controlled by the valve core 52. When negative pressure is generated in the filter element due to pumping, and the pressure of air acting on the valve core 52 is greater than the elastic force of the elastic member 53 acting on the valve core 52, the closure of the hole 51a is released.

[0036] In the technical scheme of the utility model, the flat filter wall in the form of plate 44 structure is changed into annular filter wall 4 surrounding the outer periphery of filter medium 1, the direct contact area of fuel oil and water-blocking medium 42 is increased, and the separated water can be quickly accumulated at the lower end of the filter wall, which is closer to the bottom of filter housing 200, so that the deposition speed is increased.

[0037] In order to avoid the oil flowing out from the upper end of support 41 when passing through water-blocking medium 42, please refer to Figures 1-3In an embodiment of the present application, the upper end of the annular bracket 41 is closed by the plate 44, so that the water-containing oil liquid can only pass through the water-blocking medium 42 and then reach the oil liquid outlet 200b. It should be noted that in this embodiment, the outer edge of the plate 44 further extends outward, so that it can be connected to the shell of the filter 1000 to fix the annular filter wall 4; and the extension is also provided with a through hole for the oil liquid to pass through, so as to facilitate the filtered oil liquid to enter the oil liquid outlet.

[0038] To further fix the annular filter wall 4, please refer to Figures 1-3 In an embodiment of the present application, the plate 44 is connected to the first end cover 2. Specifically, in this embodiment, the first end cover 2 is provided with a first opening 2a communicating with the central cavity 1a, and an annular protrusion 21 is formed along the first opening 2a, and the plate 44 is connected to the annular protrusion 21.

[0039] Further, please refer to Figures 1-3 In an embodiment of the present application, a mounting hole 44a is formed in the center of the plate 44, and the mounting hole 44a is connected to the outer edge of the annular protrusion 21, so as to fix the annular filter wall 4.

[0040] To make full use of the water-blocking medium 42, please refer to Figures 1-3 In an embodiment of the present application, the annular sealing portion 43 is arranged at the lower end of the bracket 41 and located at the outer edge thereof, so that after separating the water-containing oil liquid and the clean oil liquid, the area through which the oil liquid passes the water-blocking medium 42 is larger, and more water accumulates under its own gravity and settles at the bottom of the filter shell 200, so that the water separation efficiency is higher.

[0041] As a preferred, in an embodiment of the present application, the annular sealing portion 43 is an O-ring.

[0042] To facilitate the installation of the drain pipe 6, please refer to Figures 1-3 In an embodiment of the present application, the upper end and the lower end of the bracket 41 are both formed with a through hole 41a for the drain pipe 6 to pass through, so as to fix the drain pipe 6 and prevent it from falling off.

[0043] To facilitate the guide of the drain pipe 6 to drain the water at the bottom of the filter shell 200, please refer to Figures 1-3 In an embodiment of the present application, the upper end of the bracket 41 is provided with a pipe column 411, the upper end of the pipe column 411 is connected to the drain port 200c on the filter shell 200, and the lower end is inserted into the drain pipe 6, so that the drain pipe 6 and the drain port 200c are connected, and the drain pipe 6 is further fixed.

[0044] The present application also provides a filter, Figures 4-5 The structure diagram of an embodiment of the filter provided by the present application is shown in Figures 4-5, the filter 1000 comprises a housing 200 and the filter element 100 described above, the filter element 100 is arranged in the interior of the housing 200, the housing 200 is provided with an oil inlet 200a and a center column 201 extending from the oil inlet 200a, which passes through the first opening 2a of the first end cover 2, so that the center cavity 1a and the oil inlet 200a are communicated to guide the oil flow; the housing 200 is also provided with an oil outlet 200b which communicates the clean side (i.e. the outer side) of the filter element 100. In this embodiment, the center column 201 also passes through the opening of the second end cover 3 and extends into the bottom of the housing 200, with the water level sensor 202 at the end thereof to monitor the water accumulated in the bottom of the housing to determine whether it needs to be discharged.

[0045] Please refer to Figure 5 , the solid arrows and the dashed arrows in the figure respectively represent the flow directions of the oil and the water, when the filter is working, under the pumping action, the oil enters from the oil inlet 200a, flows into the center cavity 1a under the guidance of the center column 201, filters the impurity particles through the annular filter medium 1, and separates the water in the oil in the inside of the water-blocking medium 42, after the water is accumulated into water droplets, it is deposited to the bottom of the housing 200 from the water-blocking medium under the action of gravity; the oil after water separation passes through the water-blocking medium 42, accumulates above the annular sealing part 43, and finally flows out through the oil outlet 200b. In addition, when the water level sensor 202 monitors that the water in the bottom of the housing 200 needs to be discharged, under the pumping action, the water is sucked into the drain outlet 200c by the drain pipe 6 and discharged to the outside.

[0046] The technical features of the above embodiments can be combined in any way, in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0047] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A filter cartridge, characterized by, The application relates to a filter element, comprising: a ring-shaped filter medium (1) having a central cavity (1a) arranged around a central axis; a first end cover (2) and a second end cover (3) connected to two ends of the ring-shaped filter medium (1); a ring-shaped filter wall (4) arranged on the outer periphery of the ring-shaped filter medium (1), the ring-shaped filter wall (4) comprising a ring-shaped support (41) and a water-blocking medium (42) arranged on the support (41), the support (41) being provided with a ring-shaped sealing part (43) for abutting an inner wall of a filter housing (200); a bypass valve (5) arranged on the first end cover (2) and used for connecting or blocking a passage between the central cavity (1a) and the outside; and a drain pipe (6) arranged on the ring-shaped filter wall (4), one end of the drain pipe (6) being connected to a drain port (200c) of the filter housing (200), and the other end of the drain pipe (6) extending to the bottom of the filter housing (200). The upper end of the ring-shaped support (41) is closed by a plate (44). The plate (44) is connected to the first end cover (2). The first end cover (2) is provided with a first opening (2a) connected to the central cavity (1a), and a ring-shaped protrusion (21) is formed along the first opening (2a), and the plate (44) is connected to the ring-shaped protrusion (21). The plate (44) is provided with a mounting hole (44a) and abuts the ring-shaped protrusion (21). The ring-shaped sealing part (43) is arranged at the lower end of the support (41).

2. The filter cartridge of claim 1 wherein, The ring-shaped sealing part (43) is an O-shaped ring.

3. The filter cartridge of claim 2 wherein, The upper end and the lower end of the support (41) are both provided with through holes for the drain pipe (6) to pass through.

4. The filter cartridge of claim 3 wherein, The upper end of the support (41) is provided with a pipe column, the pipe column is connected to the drain port (200c) and connected to the drain pipe (6).

5. The filter cartridge of claim 4 wherein, The application further relates to a filter, comprising a housing (200) and the filter element according to any one of claims 1-7, the filter element being arranged in the housing (200), and the housing (200) being provided with an oil inlet (200a) connected to the central cavity (1a) and an oil outlet (200b) connected to the clean side of the filter element.

6. The filter cartridge of claim 1 wherein, ​ 7. The filter cartridge of claim 1 wherein, ​ 8. The filter cartridge of claim 1 wherein, ​ 9. The filter cartridge of claim 8 wherein, ​ 10. A filter characterized by, ​

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