Oil filter

Abstract

The present invention provides a petroleum filter device including a shell, the shell including a shell body and an upper end cover, the upper end cover is detachably connected to the shell body; a first baffle and a second baffle are arranged opposite to each other in the shell body, the first baffle, the second baffle and the shell body together form a petroleum filter chamber, and the oil inlet pipe is connected to the petroleum filter chamber; a plurality of filter cartridges are arranged in the petroleum filter chamber, a plurality of through holes corresponding to the plurality of filter cartridges are arranged on the first baffle, the filter cartridges are detachably arranged in the petroleum filter chamber through the through holes, and after being installed and fixed, the upper end of the filter cartridges is located between the first baffle and the upper end cover. The petroleum filter device provided by the present invention is convenient for cleaning and replacing the filter screen, and the petroleum filter device can have a better filtering effect for a long time.

Description

Technical Field

[0001] The invention relates to oil production and processing technology, in particular to an oil filtering device. Background Art

[0002] Petroleum is one of the main objects of geological exploration. It is a viscous dark brown liquid and is called the "blood of industry". Unprocessed petroleum extracted from oil wells is generally called crude oil. Crude oil is a mixture of various alkanes, cycloalkanes, aromatic hydrocarbons, etc. It generally needs to be purified before use to remove volatile and highly dangerous components in crude oil to ensure the safety of subsequent transportation and use.

[0003] In the prior art, before oil is purified, it is generally necessary to filter it through an oil filter device, which can remove impurities in the oil to prevent it from affecting the subsequent purification equipment. The oil filter device in the prior art generally includes a shell, a filter screen for filtering oil is provided inside the shell, and an oil inlet pipe and an oil outlet pipe connected to the inside of the shell are provided on the surface of the shell. When filtering, oil is injected into the shell from the oil inlet pipe, the oil passes through the filter screen, and then the filtered oil is obtained in the oil outlet pipe.

[0004] However, the filter screen of the petroleum filter device in the prior art is not easy to remove, and the filter screen is difficult to clean and replace, and the filtering effect is poor after long-term use. Summary of the invention

[0005] In order to overcome the above-mentioned defects in the prior art, an embodiment of the present invention provides a petroleum filter device, which can conveniently remove the filter screen, thereby facilitating the cleaning and replacement of the filter screen, thereby ensuring that the petroleum filter device can have a better filtering effect for a long time.

[0006] An embodiment of the present invention provides a petroleum filtering device, comprising a housing, wherein the housing comprises a housing body and an upper end cover, wherein the upper end cover is detachably connected to the housing body;

[0007] The housing body is formed with a receiving cavity, and a first baffle and a second baffle are arranged opposite to each other in the receiving cavity, the first baffle and the second baffle are parallel to the upper end cover, the first baffle and the second baffle are connected to the inner wall of the housing body, the first baffle, the second baffle and the housing body together form an oil filter cavity, the housing body is provided with an oil inlet pipe and an oil outlet pipe, and the oil inlet pipe is connected to the oil filter cavity;

[0008] A plurality of filter cartridges are arranged in the petroleum filter chamber, and a plurality of through holes corresponding to the plurality of filter cartridges are arranged on the first baffle plate. The filter cartridges are detachably arranged in the petroleum filter chamber through the through holes, and after being installed and fixed, the upper end of the filter cartridges is located between the first baffle plate and the upper end cover.

[0009] As described above, the petroleum filtering device, optionally, the filter cartridge includes a filter cartridge body and a filter cartridge cover, the filter cartridge body and the filter cartridge cover are detachably connected, a plurality of filter holes are evenly distributed on the filter cartridge body, and after installation and fixing, at least a portion of the filter cartridge cover is located between the first baffle and the upper end cover.

[0010] As described above, the petroleum filtering device, optionally, the filter cartridge cover includes a filter cartridge cover body and a horizontal flange arranged on the outer peripheral side of the filter cartridge cover body, the flange is provided with an annular protrusion parallel to the axial direction of the filter cartridge cover; the first baffle is provided with an annular groove, the annular groove is located on the outside of the through hole; the filter cartridge is fixed by the cooperation of the annular protrusion and the annular groove.

[0011] As for the petroleum filtering device as described above, optionally, the outer side of the annular protrusion is provided with an external thread, the inner wall of the annular groove is provided with an internal thread, and the annular protrusion is threadedly connected to the annular groove.

[0012] As described above, the petroleum filtering device may optionally have a plurality of fixing holes on the upper end of the filter cartridge body, and a plurality of fixing protrusions facing the axial direction of the filter cartridge cover are provided on the inner wall of the lower end of the filter cartridge cover, and the fixing protrusions are arranged in the fixing holes to enable the filter cartridge cover to be clamped and fixed to the filter cartridge body.

[0013] As described above, the petroleum filtering device may optionally have a plurality of fixed tubes disposed on the side of the second baffle plate facing the filter cartridge, the lower end of the filter cartridge being sleeved on the outside of the fixed tubes, the fixed tubes being connected to the inner cavity of the filter cartridge, the second baffle plate and the shell body together forming an oil outlet cavity, and the oil outlet tubes being connected to the oil outlet cavity.

[0014] As described above, in the petroleum filtering device, optionally, the second baffle is detachably connected to the shell body, and a handle is provided on a side of the second baffle away from the filter cartridge.

[0015] As described above, the oil filtering device can optionally include a filter screen in the oil outlet cavity, and the filter screen is disposed close to the oil outlet pipe.

[0016] The petroleum filtering device as described above, optionally, a first inspection port is provided on the upper end cover, the diameter of the first inspection port is larger than the diameter of the annular structure formed by the outer side walls of the plurality of filter cartridges, a first inspection cover is provided in the first inspection port, and the first inspection cover is detachably connected to the upper end cover.

[0017] As described above, the petroleum filtering device may, optionally, have a second inspection port on the bottom wall of the shell body, a second inspection cover is provided in the second inspection port, and the second inspection cover is detachably connected to the bottom wall of the shell body.

[0018] The petroleum filtering device provided by the embodiment of the present invention includes a shell, the shell includes a shell body and an upper end cover, and the upper end cover is detachably connected to the shell body; an accommodating chamber is formed in the shell body, and a first baffle and a second baffle are arranged opposite to each other in the accommodating chamber, the first baffle and the second baffle are parallel to the upper end cover, the first baffle and the second baffle are connected to the inner wall of the shell body, the first baffle, the second baffle and the shell body together form an oil filter chamber, an oil inlet pipe and an oil outlet pipe are arranged on the shell body, and the oil inlet pipe is connected to the oil filter chamber; a plurality of filter cartridges are arranged in the oil filter chamber, a plurality of through holes corresponding to the plurality of filter cartridges are arranged on the first baffle, the filter cartridges are detachably arranged in the oil filter chamber through the through holes, and after being installed and fixed, the upper end of the filter cartridge is located between the first baffle and the upper end cover. The present invention achieves oil filtration by installing multiple filter cartridges in multiple through holes on the first baffle plate in a one-to-one correspondence, so that the filter cartridges are located in the oil filter chamber; at the same time, after installation, the upper end of the filter cartridge is located between the first baffle plate and the upper end cover, that is, the upper end of the filter cartridge is located above the first baffle plate, and by setting the upper end cover and the shell body to be detachably connected, when the filter cartridge needs to be cleaned or replaced, the upper end cover can be removed, and the upper end of the filter cartridge can be grasped to take the filter cartridge out of the oil filter chamber; during installation, the filter cartridge can be installed in the oil filter chamber using the same method. It can be seen from the above description that the oil filter device provided by the embodiment of the present invention is convenient for cleaning and replacement of the filter screen, and the oil filter device can have a better filtering effect for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A simplified structural diagram of a petroleum filtering device provided in one embodiment of the present invention;

[0021] Figure 2 A schematic top view of the structure of a first baffle provided in one embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the front structure of a filter cartridge cover provided in one embodiment of the present invention;

[0023] Figure 4 A schematic top view of the filter cartridge cover provided in one embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a second baffle provided in one embodiment of the present invention;

[0025] Figure 6 A simplified structural diagram of a filter cartridge provided in one embodiment of the present invention.

[0026] Reference numerals:

[0027] 100-housing; 110-housing body;

[0028] 111- oil inlet pipe; 112- oil outlet pipe;

[0029] 120-upper end cover; 200-first baffle;

[0030] 210-through hole; 220-annular groove;

[0031] 300-second baffle; 310-fixed pipe;

[0032] 320-handle; 400-filter cartridge;

[0033] 410-filter cartridge body; 411-filter hole;

[0034] 412-fixing hole; 413-through slot;

[0035] 420-filter cartridge cover; 421-filter cartridge cover body;

[0036] 422- flange; 423- annular protrusion;

[0037] 424-fixing protrusion; 500-filter. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] It should be noted that in the description of the present invention, the terms "first" and "second" are only used to facilitate the description of different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0043] Petroleum is one of the main objects of geological exploration. It is a viscous dark brown liquid and is called the "blood of industry". Unprocessed petroleum extracted from oil wells is generally called crude oil. Crude oil is a mixture of various alkanes, cycloalkanes, aromatic hydrocarbons, etc. It generally needs to be purified before use to remove volatile and highly dangerous components in crude oil to ensure the safety of subsequent transportation and use.

[0044] In the prior art, before oil is purified, it is generally necessary to filter it through an oil filter device, which can remove impurities in the oil to prevent it from affecting the subsequent purification equipment. The oil filter device in the prior art generally includes a shell, a filter screen for filtering oil is provided inside the shell, and an oil inlet pipe and an oil outlet pipe connected to the inside of the shell are provided on the surface of the shell. When filtering, oil is injected into the shell from the oil inlet pipe, the oil passes through the filter screen, and then the filtered oil is obtained in the oil outlet pipe.

[0045] However, the filter screen of the petroleum filter device in the prior art is not easy to remove, and the filter screen is difficult to clean and replace, and the filtering effect is poor after long-term use.

[0046] In order to overcome the above-mentioned defects in the prior art, an embodiment of the present invention provides a petroleum filter device, which can conveniently remove the filter screen, thereby facilitating the cleaning and replacement of the filter screen, thereby ensuring that the petroleum filter device can have a better filtering effect for a long time.

[0047] The content of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the content of the present invention in more detail.

[0048] Figure 1 A simplified structural diagram of a petroleum filtering device provided in one embodiment of the present invention; Figure 2 A schematic top view of the structure of a first baffle provided in one embodiment of the present invention; Figure 3 A schematic diagram of the front structure of a filter cartridge cover provided in one embodiment of the present invention; Figure 4 A schematic top view of the filter cartridge cover provided in one embodiment of the present invention; Figure 5 A schematic structural diagram of a second baffle provided in one embodiment of the present invention; Figure 6 This is a simplified structural diagram of a filter cartridge provided in one embodiment of the present invention; please refer to Figure 1-Figure 6 The present embodiment provides a petroleum filtering device, including a housing 100 , wherein the housing 100 includes a housing body 110 and an upper end cover 120 , and the upper end cover 120 is detachably connected to the housing body 110 .

[0049] An accommodating cavity is formed in the shell body 110, in which a first baffle 200 and a second baffle 300 are arranged opposite to each other. The first baffle 200 and the second baffle 300 are parallel to the upper end cover 120, and the first baffle 200 and the second baffle 300 are connected to the inner wall of the shell body 110. The first baffle 200, the second baffle 300 and the shell body 110 together form an oil filter cavity. An oil inlet pipe 111 and an oil outlet pipe 112 are provided on the shell body 110, and the oil inlet pipe 111 is connected to the oil filter cavity.

[0050] A plurality of filter cartridges 400 are provided in the petroleum filter chamber, and a plurality of through holes 210 corresponding to the plurality of filter cartridges 400 are provided on the first baffle plate 200. The filter cartridges 400 are detachably arranged in the petroleum filter chamber through the through holes 210, and after being installed and fixed, the upper end of the filter cartridge 400 is located between the first baffle plate 200 and the upper end cover 120.

[0051] Optionally, the cross-sectional shape of the housing 100 of the present embodiment may be circular, square, triangular, etc., which is not further limited in the present embodiment. The housing 100 may be made of metal material, such as 45# steel, stainless steel, etc. The housing 100 includes a housing body 110 and an upper end cover 120 that are detachably connected. The detachable connection method between the upper end cover 120 and the housing body 110 may be selected as required. In a preferred embodiment, the upper end cover 120 and the housing body 110 may be detachably connected by threaded connection.

[0052] The interior of the housing body 110 is a receiving chamber, in which a first baffle 200 and a second baffle 300 are arranged opposite to each other. The first baffle 200 and the second baffle 300 are parallel to the upper end cover 120. Figure 1 The first baffle 200 and the second baffle 300 are arranged in the horizontal direction, and the cross-sectional shape of the first baffle 200 and the second baffle 300 is similar to that of the shell body 110, so that the side walls of the first baffle 200 and the second baffle 300 are connected to the inner wall of the shell body 110, and the connection method can be a fixed connection such as welding, or a detachable connection method such as threaded connection, which is not further limited in this embodiment. After the first baffle 200 and the second baffle 300 are installed, the accommodating cavity is separated by the first baffle 200 and the second baffle 300, wherein the cavity surrounded by the first baffle 200, the second baffle 300 and the shell body 110 is an oil filter cavity, that is, a cavity for oil filtering operation, and the oil inlet pipe 111 is connected to the oil filter cavity to inject the oil to be filtered into the oil filter cavity. The setting position of the oil outlet pipe 112 can be selected according to needs, for example, the oil outlet pipe 112 can also be connected to the oil filter cavity, and the oil inlet pipe 111 is located above the oil outlet pipe 112 in the vertical direction.

[0053] A plurality of filter cartridges 400 are provided in the petroleum filter chamber. The specific number of the filter cartridges 400 can be set according to the needs. Generally, the more the number of filter cartridges, the better the filtering effect. Figure 1 As shown, in this embodiment, two filter cartridges 400 are provided. The shape of the filter cartridge 400 can also be set as needed, and can be a cylinder, a prism, etc. In this embodiment, the filter cartridge 400 is a cylinder as an example for explanation. The cylindrical filter cartridge 400 has a large filtering area and can bring a good filtering effect.

[0054] In order to install the filter cartridge 400 into the oil filter chamber, a plurality of through holes 210 corresponding to the plurality of filter cartridges 400 are provided on the first baffle plate 200. The filter cartridges 400 correspond to the through holes 210 one by one and are detachably arranged in the oil filter chamber. The specific detachable connection method can be selected as needed, and this embodiment is not further limited here. After installation and fixing, the upper end of the filter cartridge 400 is located between the first baffle plate 200 and the upper end cover 120, that is, the upper end of the filter cartridge 400 is exposed from the first baffle plate 200, from Figure 1 From the top, the upper end of the filter cartridge 400 is located above the first baffle plate 200. In this way, when the filter cartridge 400 needs to be cleaned or replaced, the staff can first remove the upper end cover 120 from the housing 100, and then hold the portion of the filter cartridge 400 that is exposed from the first baffle plate 200 to take the filter cartridge 400 out of the oil filter chamber, and then clean or replace it; put the cleaned filter cartridge 400 or the replaced new filter cartridge 400 into the oil filter chamber through the through hole 210, and make the filter cartridge 400 and the oil filter chamber snap-fit ​​and fix, so as to complete the cleaning or replacement operation, so that the oil filter device can maintain a better filtering effect for a long time.

[0055] The petroleum filtering device provided in this embodiment includes a housing 100, and the housing 100 includes a housing body 110 and an upper end cover 120, and the upper end cover 120 is detachably connected to the housing body 110. An accommodating cavity is formed in the housing body 110, and a first baffle 200 and a second baffle 300 are arranged opposite to each other in the accommodating cavity. The first baffle 200 and the second baffle 300 are parallel to the upper end cover 120, and the first baffle 200 and the second baffle 300 are connected to the inner wall of the housing body 110. The first baffle 200, the second baffle 300 and the housing body 110 jointly form an oil filtering cavity, and an oil inlet pipe 111 and an oil outlet pipe 112 are arranged on the housing body 110, and the oil inlet pipe 111 is connected to the oil filtering cavity. A plurality of filter cartridges 400 are provided in the petroleum filter chamber, and a plurality of through holes 210 corresponding to the plurality of filter cartridges 400 are provided on the first baffle plate 200. The filter cartridges 400 are detachably arranged in the petroleum filter chamber through the through holes 210, and after being installed and fixed, the upper end of the filter cartridge 400 is located between the first baffle plate 200 and the upper end cover 120. In this embodiment, multiple filter cartridges 400 are installed one by one in multiple through holes 210 on the first baffle 200, so that the filter cartridges 400 are located in the oil filter chamber to filter the oil; at the same time, after installation, the upper end of the filter cartridge 400 is located between the first baffle 200 and the upper end cover 120, that is, the upper end of the filter cartridge 400 is located above the first baffle 200, and the upper end cover 120 and the shell body 110 are set to be detachably connected. When the filter cartridge 400 needs to be cleaned or replaced, the upper end cover 120 can be removed, and the upper end of the filter cartridge 400 can be grasped to take the filter cartridge 400 out of the oil filter chamber; during installation, the filter cartridge 400 can be installed in the oil filter chamber using the same method. It can be seen from the above description that the oil filter device provided in this embodiment is convenient for cleaning and replacing the filter screen 400, and the oil filter device can have a better filtering effect for a long time.

[0056] For further information, please refer to Figure 1 and Figure 6 The filter cartridge 400 in this embodiment includes a filter cartridge body 410 and a filter cartridge cover 420. The filter cartridge body 410 and the filter cartridge cover 420 are detachably connected. The specific detachable connection method can be threaded connection, clamping connection, etc., which is not further limited in this embodiment. The filter cartridge body 410 is evenly distributed with a plurality of filter holes 411, such as Figure 6 As shown, the surface of the filter cartridge body 410 is provided with a plurality of filter holes 411, and the filter holes 411 are arranged in a plurality of rows along the vertical direction, and the distances between adjacent rows are equal. Figure 1 As shown, after installation and fixation, at least a portion of the filter cartridge cover 420 is located between the first baffle 200 and the upper end cover 120, so as to facilitate the removal of the filter cartridge 400 from the oil filter chamber.

[0057] For further information, please refer to Figure 1 , Figure 2 and Figure 3 The filter cartridge cover 420 includes a filter cartridge cover body 421 and a horizontal flange 422 arranged on the outer peripheral side of the filter cartridge cover body 421, that is, the flange 422 is arranged perpendicular to the outer surface of the filter cartridge cover body 421. The flange 422 is provided with an annular protrusion 423 parallel to the axial direction of the filter cartridge cover 420, and the annular protrusion 423 is arranged perpendicular to the flange 422, and the axis of the annular protrusion 423 coincides with the axial direction of the filter cartridge cover body 421. Figure 3 It can be seen that the annular protrusion 423 is arranged vertically downward in the direction shown in the figure. Figure 2 As shown, the first baffle 200 is provided with an annular groove 220, which is located outside the through hole 210 and is coaxially arranged with the through hole 210. As can be seen from the above description, the filter cartridge cover 420 can be fixed by matching the annular protrusion 423 with the annular groove 220, thereby ensuring the firmness of the connection of the filter cartridge cover 420. Since the filter cartridge cover 420 is fixed to the filter cartridge body 410, the filter cartridge 400 can be fixed, thereby ensuring the firmness of the filter cartridge 400 during the filtering process and improving the reliability of use.

[0058] Furthermore, an outer side of the annular protrusion 423 is provided with an external thread, and an inner wall of the annular groove 220 is provided with an internal thread, and the annular protrusion 423 is threadedly connected to the annular groove 220 .

[0059] For further information, please refer to Figure 1 , Figure 4 and Figure 6 In an optional embodiment, a plurality of fixing holes 412 are provided at the upper end of the filter cartridge body 410, and a plurality of fixing protrusions 424 facing the axial direction of the filter cartridge cover 420 are provided on the inner wall of the lower end of the filter cartridge cover 420. When installing and connecting, the fixing protrusions 424 are arranged in the fixing holes 412 to enable the filter cartridge cover 420 and the filter cartridge body 410 to be snap-fitted and fixed. To facilitate setting the fixing protrusion 424 in the fixing hole, a through groove 413 connected to the fixing hole 412 can be set on the filter cartridge body 410, and one end of the through groove 413 is connected to the upper end of the filter cartridge body 410 to form a notch for the fixing protrusion 424 to enter and install, and the other end of the through groove 413 is connected to the fixing hole 412, and its length is less than the length of the fixing hole 412, so that the two form a generally "L"-shaped structure. The fixing protrusion 424 can be installed on the horizontal edge of the "L"-shaped structure, thereby preventing the filter cartridge 400 from rotating during operation, increasing the tightness and sealing of the filter cartridge body 410 and the filter cartridge cover 420, preventing impurities from entering the filter cartridge body 410, and ensuring the filtration quality.

[0060] For further information, please refer to Figure 1 and Figure 5In this embodiment, a plurality of fixed tubes 310 are provided on the side of the second baffle 300 facing the filter cartridge 400. The lower end of the filter cartridge 400 is sleeved on the outside of the fixed tube 310. The fixed tube 310 is connected to the inner cavity of the filter cartridge 400. The second baffle 300 and the shell body 110 together form an oil outlet cavity, and the oil outlet pipe 112 is connected to the oil outlet cavity. By arranging the fixed tube 310 on the second baffle 300, the lower end of the filter cartridge 400 can be limited and fixed to ensure safe use. The fixed tube 310 can also introduce the filtered oil into the oil outlet cavity below the second baffle 300. The oil outlet pipe 112 is connected to the oil outlet cavity, thereby ensuring that the discharged oil is filtered oil, preventing unfiltered oil from being mixed in, and ensuring the filtering effect.

[0061] For further information, please refer to Figure 1 The second baffle 300 is detachably connected to the housing body 110. For example, the second baffle 300 and the housing body 110 can be threadedly connected to facilitate disassembly and cleaning when necessary. A handle 320 is provided on the side of the second baffle 300 away from the filter cartridge 400. The second baffle 300 can be disassembled by rotating the handle 320.

[0062] For further information, please refer to Figure 1 In this embodiment, a filter screen 500 is further provided in the oil outlet chamber. The filter screen 500 is arranged close to the oil outlet pipe 112. The specific mesh size and type of the filter screen 500 can be selected according to needs. This embodiment does not make further restrictions on this. The filter screen 500 can perform secondary filtration on the oil to ensure the quality of the oil.

[0063] Furthermore, a first inspection port may be provided on the upper end cover 120, and the diameter of the first inspection port may be set to be larger than the diameter of the annular structure formed by the outer side walls of the plurality of filter cartridges 400. A first inspection cover may be provided in the first inspection port, and the first inspection cover may be hinged or detachably connected to the upper end cover 120. The first inspection cover is made of a transparent material, so that the staff can observe the internal conditions of the filter device through the first inspection cover. When the filter cartridge 400 needs to be disassembled or replaced, the filter cartridge 400 may be replaced by opening the first inspection cover without disassembling the upper end cover 120, which further facilitates the work of the staff.

[0064] Furthermore, a second inspection port may be provided on the bottom wall of the housing body 110, and a second inspection cover may be provided in the second inspection port, and the second inspection cover may be hinged or detachably connected to the bottom wall of the housing body 110. The second inspection cover is made of a transparent material, so that the staff can observe the internal conditions of the oil outlet cavity through the second inspection cover. When the oil outlet cavity needs to be cleaned, the staff can clean the impurities in the oil outlet cavity by opening the second inspection cover, which is simple to clean and convenient to use.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A petroleum filtering device, characterized in that: The housing comprises a housing body and an upper end cover, wherein the upper end cover is detachably connected to the housing body; The housing body is formed with a receiving cavity, and a first baffle and a second baffle are arranged opposite to each other in the receiving cavity, the first baffle and the second baffle are parallel to the upper end cover, the first baffle and the second baffle are connected to the inner wall of the housing body, the first baffle, the second baffle and the housing body together form an oil filter cavity, the housing body is provided with an oil inlet pipe and an oil outlet pipe, and the oil inlet pipe is connected to the oil filter cavity; The oil filter cavity is provided with a plurality of filter cartridges, the first baffle is provided with a plurality of through holes corresponding to the plurality of filter cartridges, the filter cartridges are detachably arranged in the oil filter cavity through the through holes, and after being installed and fixed, the upper end of the filter cartridges is located between the first baffle and the upper end cover; The filter cartridge comprises a filter cartridge body and a filter cartridge cover; the filter cartridge cover comprises a filter cartridge cover body and a horizontal flange arranged on the outer peripheral side of the filter cartridge cover body, and the flange is provided with an annular protrusion parallel to the axial direction of the filter cartridge cover; an annular groove is provided on the first baffle plate, and the annular groove is located outside the through hole; the filter cartridge is fixed by the cooperation of the annular protrusion and the annular groove; The upper end of the filter cartridge body is provided with a plurality of fixing holes, and the inner wall of the lower end of the filter cartridge cover is provided with a plurality of fixing protrusions facing the axial direction of the filter cartridge cover, and the filter cartridge cover and the filter cartridge body are fixedly connected by arranging the fixing protrusions in the fixing holes; A plurality of fixed tubes are provided on one side of the second baffle plate facing the filter cartridge, the lower end of the filter cartridge is sleeved on the outside of the fixed tubes, the fixed tubes are connected to the inner cavity of the filter cartridge, the second baffle plate and the shell body together form an oil outlet cavity, and the oil outlet tubes are connected to the oil outlet cavity; The upper end cover is provided with a first inspection port, the diameter of which is larger than the diameter of the annular structure formed by the outer side walls of the plurality of filter cartridges, and a first inspection cover is provided in the first inspection port, and the first inspection cover is detachably connected to the upper end cover; A second inspection opening is provided on the bottom wall of the shell body, a second inspection cover is provided in the second inspection opening, and the second inspection cover is detachably connected to the bottom wall of the shell body.

2. The petroleum filtering device according to claim 1, characterized in that: The filter cartridge body and the filter cartridge cover are detachably connected, and a plurality of filter holes are evenly distributed on the filter cartridge body. After installation and fixation, at least a portion of the filter cartridge cover is located between the first baffle and the upper end cover.

3. The petroleum filtering device according to claim 2, characterized in that: The outer side of the annular protrusion is provided with an external thread, the inner wall of the annular groove is provided with an internal thread, and the annular protrusion is threadedly connected with the annular groove.

4. The petroleum filtering device according to claim 1, characterized in that: The second baffle is detachably connected to the shell body, and a handle is provided on a side of the second baffle away from the filter cartridge.

5. The petroleum filtering device according to claim 1, characterized in that: A filter screen is arranged in the oil outlet cavity, and the filter screen is arranged close to the oil outlet pipe.

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