Diesel oil filter

Abstract

The utility model provides a diesel oil filter which comprises an upper cover body, a shell and a lower cover body which are connected in sequence, an oil inlet pipe and an oil outlet pipe are installed on the upper cover body, an oil return inlet pipe and an oil return outlet pipe are installed on the shell, a filter body is arranged in the shell, and the filter body comprises an upper partition plate, a lower partition plate and a lower partition plate, an oil inlet and an oil outlet are formed in the upper partition plate, the oil inlet is communicated with the oil inlet pipe, and the oil outlet is communicated with the oil outlet pipe; the inner filter cylinder is mounted on the bottom side of the upper partition plate and is communicated with the oil inlet, and a first filter paper part is mounted on the peripheral side of the inner filter cylinder; the outer partition plate is of a cylindrical structure, integrally fixed to the bottom side of the upper partition plate and located on the outer side of the oil outlet, and an oil return cavity is formed by the outer partition plate and the shell. According to the device, an oil outlet part filtering structure and an oil return part filtering structure are unified in one structural unit, the overall use space of the diesel engine box is optimized, meanwhile, the oil outlet part filtering structure and the oil return part filtering structure can be replaced at the same time, and the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a diesel filter. Background Art

[0002] A filter is an accessory that filters impurities or gases through filter paper. It is mainly responsible for filtering the medium in the combustion system. When the fuel filter operates in a low-temperature working environment, the diesel will precipitate wax and become viscous, causing the diesel engine to fail to start or be difficult to start. If the diesel temperature inside the filter cannot be adjusted and the viscosity of the diesel cannot be reduced, the normal starting of the engine will be affected.

[0003] Patent No. 202010159692.X discloses a diesel filter with return oil heating, including a filter canister, an upper cover body is provided on the top of the filter canister, a lower shell body is provided on the bottom of the filter canister, an inner cavity and an outer cavity are provided inside the filter canister, the inner cavity is a diesel cavity, the outer cavity is an engine return oil cavity, a filter element is provided inside the diesel cavity, an oil inlet and an oil outlet connected to the diesel cavity are provided on the upper cover body, a return oil inlet is provided on one side of the outer wall of the filter canister, and a return oil outlet is provided on the other side of the outer wall of the filter canister, and the return oil inlet and the return oil outlet are both connected to the engine return oil cavity. This patent uses the high-temperature return oil of the engine to heat the low-temperature diesel inside the filter, thereby ensuring that the filter works normally in a low-temperature environment.

[0004] In the above technology, only the inlet and outlet oil parts are filtered, and no filtering structure is set in the return oil part. Since the return oil contains impurities such as metal chips and dust, the subsequent use of the return oil will directly affect the engine combustion efficiency. If a return oil filter is set separately, it will occupy the overall use space of the diesel engine chassis. Utility Model Content

[0005] In view of the above problems, the utility model provides a diesel filter.

[0006] A diesel filter comprises an upper cover body, a shell body and a lower cover body which are connected in sequence, and an oil inlet pipe and an oil outlet pipe are installed on the upper cover body, an oil return inlet pipe and an oil return outlet pipe are installed on the shell body, and a filter body is arranged inside the shell, and the filter body comprises: an upper baffle plate which is sealed and connected to the top side of the shell body, and an oil inlet and an oil outlet are opened on the upper baffle plate, the oil inlet is communicated with the oil inlet pipe, and the oil outlet is communicated with the oil outlet pipe; an inner filter cartridge which is installed on the bottom side of the upper baffle plate and is communicated with the oil inlet, and a first filter paper portion is installed on the circumferential side of the inner filter cartridge; an outer baffle plate which is in a cylindrical structure, integrally fixed to the bottom side of the upper baffle plate, and is located on the outside of the oil outlet, forming an oil return chamber with the shell body, and the oil return chamber is respectively communicated with the oil return inlet pipe and the oil return outlet pipe, an annular horizontal filter plate is connected to the outside of the outer baffle plate, and second filter paper portions are connected on both sides of the horizontal filter plate; a lower baffle plate which is installed on the bottom side of the inner filter cartridge.

[0007] In a preferred embodiment, the shell includes: a horizontal partition, on the inner side of which a first annular inner plate and a first annular outer plate are arranged; the filter body also includes: a second annular inner plate and a second annular outer plate; the second annular inner plate and the second annular outer plate are fixed on the top side of the upper partition, and are sealed and connected to the upper partition and the first annular outer plate respectively.

[0008] In a preferred embodiment, the diesel filter comprises a plurality of oil outlets, and the plurality of oil outlets are evenly arranged between the outer partition plate and the first filter paper portion.

[0009] In a preferred embodiment, two horizontal filter plates are fixed on the outside of the outer partition plate, the two horizontal filter plates are arranged in parallel, and the return oil inlet pipe and the return oil outlet pipe are respectively arranged on the top and bottom sides of the two horizontal filter plates.

[0010] In a preferred embodiment, an annular sealing plate is integrally fixed to the top side of the lower cover body, and the annular sealing plate is sealed to the lower partition plate via a sealing ring.

[0011] In a preferred embodiment, the filter body further comprises a plurality of heat conducting plates uniformly and perpendicularly to the inner side of the outer partition, and both the outer partition and the heat conducting plates are made of heat conducting materials.

[0012] In a preferred embodiment, the oil return outlet pipe is communicated with the oil inlet pipe.

[0013] 1. The diesel filter of the present application takes in oil through the oil inlet pipe, then enters the inner filter cartridge through the oil inlet port 411, and after being filtered by the first filter paper portion, flows to the oil outlet, and then flows out from the oil outlet pipe; at the same time, in the return oil portion, the return oil flows into the housing from the return oil inlet pipe, enters the return oil chamber, passes through the second filter paper portion and the horizontal filter plate in turn, and filters metal chips, dust and other impurities in the return oil. The device unifies the filter structure of the oil outlet portion and the filter structure of the oil return portion in one structural unit, thereby optimizing the overall use space of the diesel engine case. At the same time, the filter structure of the oil outlet portion and the filter structure of the oil return portion can be replaced at the same time, thereby improving the efficiency of replacing the filter structure.

[0014] 2. The diesel filter of the present application can better absorb the heat in the return oil chamber by setting a heat conducting plate, so that the heat in the return oil chamber is transferred to the oil outlet part through the return oil chamber, the outer partition and the heat conducting plate, thereby increasing the thermal contact area of ​​the diesel in the oil outlet part, further avoiding the diesel filter from precipitating wax in a low-temperature working environment and causing the diesel to become viscous, so that the engine can start normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other characteristics, features and advantages of the present invention will become clear by reading the following description of the exemplary embodiments with reference to the accompanying drawings. The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 Appearance diagram of the diesel filter of the utility model;

[0017] Figure 2 Exploded view of the diesel filter of the utility model;

[0018] Figure 3 A cross-sectional view of a diesel filter of the utility model;

[0019] Figure 4 A cross-sectional view of the filter body of the utility model;

[0020] Figure 5 The AA position cross-sectional view of the diesel filter of the utility model;

[0021] Figure 6 Appearance diagram of the filter body of the utility model.

[0022] In the figure: 10, upper cover; 20, shell; 30, lower cover; 11, oil inlet pipe; 12, oil outlet pipe; 21, return oil inlet pipe; 22, return oil outlet pipe; 40, filter body; 41, upper partition; 411, oil inlet; 412, oil outlet; 42, inner filter cartridge; 421, first filter paper portion; 43, outer partition; 431, return oil chamber; 432, horizontal filter plate; 433, second filter paper portion; 44, lower partition; 201, horizontal partition; 202, first annular inner plate; 203, first annular outer plate; 45, second annular inner plate; 46, second annular outer plate; 31, annular sealing plate; 32, sealing ring; 47, heat conductive sheet. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0024] The diesel filter is described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] A diesel filter comprises an upper cover body 10, a shell body 20, and a lower cover body 30 which are connected in sequence, and an oil inlet pipe 11 and an oil outlet pipe 12 are installed on the upper cover body 10, and a return oil inlet pipe 21 and a return oil outlet pipe 22 are installed on the shell body 20, and a filter body 40 is arranged inside the shell body 20, and the filter body 40 comprises: an upper partition plate 41, which is sealed and connected to the top side of the shell body 20, and an oil inlet port 411 and an oil outlet port 412 are opened on the upper partition plate 41, and the oil inlet port 411 is connected to the oil inlet pipe 11, and the oil outlet port 412 is connected to the oil outlet pipe 12; an inner filter cartridge 42 , installed on the bottom side of the upper partition 41, and connected to the oil inlet 411, and a first filter paper portion 421 is installed on the circumferential side of the inner filter cartridge 42; the outer partition 43, which is a cylindrical structure, is integrally fixed to the bottom side of the upper partition 41, and is located outside the oil outlet 412, forming an oil return chamber 431 with the shell 20, and the oil return chamber 431 is respectively connected to the return oil inlet pipe 21 and the return oil outlet pipe 22, and an annular horizontal filter plate 432 is connected to the outside of the outer partition 43, and the second filter paper portions 433 are connected on both sides of the horizontal filter plate 432; the lower partition 44, installed on the bottom side of the inner filter cartridge 42.

[0027] When working, the oil outlet part: the oil enters the oil inlet pipe 11, then enters the inner filter cartridge 42 through the oil inlet port 411, and after being filtered by the first filter paper portion 421, flows to the oil outlet port 412, and then flows out from the oil outlet pipe 12. At the same time, the return oil part: the return oil flows into the shell 20 from the return oil inlet pipe 21, enters the return oil chamber 431, passes through the second filter paper portion 433 and the horizontal filter plate 432 in turn, and filters the metal chips, dust and other impurities in the return oil. The device integrates the filter structure of the oil outlet part and the filter structure of the oil return part in one structural unit, optimizes the overall use space of the diesel engine case, and at the same time, the filter structure of the oil outlet part and the filter structure of the oil return part can be replaced at the same time, thereby improving the efficiency of replacing the filter structure.

[0028] The diesel filter includes a plurality of oil outlets 412, and the plurality of oil outlets 412 are evenly arranged between the outer partition plate 43 and the first filter paper portion 421. For example, 6 or 8 oil outlets 412 may be arranged.

[0029] Among them, two horizontal filter plates 432 are fixed on the outside of the outer partition plate 43, the two horizontal filter plates 432 are arranged in parallel, and the return oil inlet pipe 21 and the return oil outlet pipe 22 are arranged on the top side and the bottom side of the two horizontal filter plates 432 respectively.

[0030] The first filter paper portion 421 and the second filter paper portion 433 are the same as existing filter papers.

[0031] The oil outlet part refers to: oil enters the oil inlet pipe 11 , then enters the inner filter cartridge 42 through the oil inlet port 411 , and after being filtered by the first filter paper portion 421 , flows to the oil outlet port 412 , and then flows out from the oil outlet pipe 12 .

[0032] The return oil portion refers to: the return oil flows from the return oil inlet pipe 21 into the housing 20 , enters the return oil chamber 431 , passes through the second filter paper portion 433 and the horizontal filter plate 432 , and finally flows out from the return oil outlet pipe 22 .

[0033] A close-fitting gasket is disposed between the upper cover 10 and the shell 20 to ensure the sealing between the upper cover 10 and the shell 20 .

[0034] Example 2

[0035] Embodiment 2 is a specific implementation of Embodiment 1, and specifically includes: the shell 20 includes: a horizontal partition 201, on the inner side of which a first annular inner plate 202 and a first annular outer plate 203 are arranged; the filter body 40 also includes: a second annular inner plate 45 and a second annular outer plate 46; the second annular inner plate 45 and the second annular outer plate 46 are fixed on the top side of the upper partition 41, and are sealed and connected to the upper partition 41 and the first annular outer plate 203 respectively.

[0036] The second annular inner plate 45 and the second annular outer plate 46 are sealed and connected to the upper partition plate 41 and the first annular outer plate 203 respectively, which can ensure that the oil outlet part and the oil return part do not interfere with each other and prevent impurities in the oil return part from entering the main oil part.

[0037] Example 3

[0038] Embodiment 3 is a specific implementation of Embodiment 1, and specifically includes: an annular sealing plate 31 is integrally fixed to the top side of the lower cover body 30 , and the annular sealing plate 31 is sealedly connected to the lower partition plate 44 via a sealing ring 32 .

[0039] The annular sealing plate 31 and the sealing ring 32 are provided to prevent the oil outlet and the oil return from interfering with each other, thereby preventing impurities in the oil return from entering the oil outlet.

[0040] Example 4

[0041] Embodiment 4 is a specific embodiment of Embodiment 1, and specifically includes: the filter body 40 may further include a plurality of heat conducting sheets 47 uniformly perpendicular to the inner side of the outer partition 43, and the outer partition 43 and the heat conducting sheets 47 are both made of heat conducting materials.

[0042] Among them, by setting the heat conducting plate 47, the heat in the return oil chamber 431 can be better absorbed, so that the heat in the return oil chamber 431 is transferred to the oil outlet part through the return oil chamber 431 and the heat conducting plate 47 of the outer partition 43, thereby increasing the thermal contact area of ​​the diesel in the oil outlet part, further avoiding the diesel filter from precipitating wax in a low-temperature working environment and the diesel becoming viscous, so that the engine can start normally.

[0043] Example 5

[0044] Embodiment 5 is a specific implementation of Embodiment 1, and specifically includes: the oil return outlet pipe 22 is connected to the oil inlet pipe 11 .

[0045] The oil return outlet pipe 22 is connected to the oil inlet pipe 11 by using an oil pipe, so that the diesel fuel filtered in the oil return part directly enters the oil outlet part.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the article or device including the elements.

[0047] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. The utility model is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, and all should be included in the scope of the claims of the utility model.

Claims

1. A diesel filter, comprising an upper cover (10), a shell (20), and a lower cover (30) connected in sequence, wherein an oil inlet pipe (11) and an oil outlet pipe (12) are installed on the upper cover (10), and an oil return inlet pipe (21) and an oil return outlet pipe (22) are installed on the shell (20), characterized in that: A filter body (40) is disposed inside the housing (20), and the filter body (40) comprises: An upper baffle (41) is sealed and connected to the top side of the shell (20), and an oil inlet (411) and an oil outlet (412) are provided on the upper baffle (41), the oil inlet (411) is in communication with the oil inlet pipe (11), and the oil outlet (412) is in communication with the oil outlet pipe (12); An inner filter cartridge (42) is installed on the bottom side of the upper partition plate (41) and is in communication with the oil inlet (411), and a first filter paper portion (421) is installed on the circumference of the inner filter cartridge (42); The outer baffle (43) is in a cylindrical structure and is integrally fixed to the bottom side of the upper baffle (41) and is located outside the oil outlet (412). It forms an oil return chamber (431) with the housing (20). The oil return chamber (431) is connected to the oil return inlet pipe (21) and the oil return outlet pipe (22) respectively. An annular horizontal filter plate (432) is connected to the outside of the outer baffle (43). The second filter paper parts (433) are connected to both sides of the horizontal filter plate (432). A lower partition plate (44) is installed on the bottom side of the inner filter cartridge (42).

2. The diesel filter according to claim 1, characterized in that: The shell (20) comprises: a horizontal partition (201), a first annular inner plate (202) and a first annular outer plate (203) being arranged inside the horizontal partition (201); The filter body (40) further comprises: a second annular inner plate (45) and a second annular outer plate (46); the second annular inner plate (45) and the second annular outer plate (46) are fixed on the top side of the upper partition plate (41) and are sealedly connected to the upper partition plate (41) and the first annular outer plate (203) respectively.

3. The diesel filter according to claim 1, characterized in that: The diesel filter comprises a plurality of oil outlets (412), and the plurality of oil outlets (412) are evenly arranged between the outer partition plate (43) and the first filter paper portion (421).

4. The diesel filter according to claim 1, characterized in that: Two horizontal filter plates (432) are fixed on the outside of the outer partition plate (43), the two horizontal filter plates (432) are arranged in parallel, and the return oil inlet pipe (21) and the return oil outlet pipe (22) are respectively arranged on the top side and the bottom side of the two horizontal filter plates (432).

5. The diesel filter according to claim 1, characterized in that: An annular sealing plate (31) is integrally fixed to the top side of the lower cover body (30), and the annular sealing plate (31) is sealedly connected to the lower partition plate (44) via a sealing ring (32).

6. The diesel filter according to claim 1, characterized in that: The filter body (40) further comprises a plurality of heat-conducting sheets (47) uniformly arranged perpendicular to the inner side of the outer partition (43); the outer partition (43) and the heat-conducting sheets are both made of heat-conducting materials.

7. The diesel filter according to claim 1, characterized in that: The oil return outlet pipe (22) is in communication with the oil inlet pipe (11).

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