Pressure filter structure, lubricating system and fuel oil equipment

Abstract

The embodiment of the invention provides a pressure filter structure, a lubricating system and fuel oil equipment, and the pressure filter structure comprises a bypass valve which is provided with a containing cavity; and the filtering assembly comprises a filtering piece and a fixing piece, the filtering piece is arranged in an inner cavity of the fixing piece, the fixing piece is connected with the bypass valve, the oil sequentially penetrates through the fixing piece, the filtering piece and the bypass valve and then flows out of the bottom of the containing cavity, and / or the oil sequentially penetrates through the bypass valve and then flows out of the bottom of the containing cavity. The fixing piece can prevent at least part of impurities from impacting the filtering piece along with the oil liquid, so that the filtering piece is protected from being damaged by the impurities, the filtering efficiency is guaranteed, in the oil duct design and the shell design, an oil duct outlet can directly face the filtering piece, the filtering efficiency is improved, and the service life of the oil duct is prolonged. An oil baffle plate structure does not need to be designed, so that oil duct design and shell design are facilitated, the cost can be saved, the service life of a filtering piece can be prolonged, and the reliability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of filters, and in particular to a pressure filter structure, a lubrication system and a fuel equipment. Background Art

[0002] In the filtering and lubrication systems of automobile reducers and gearboxes, the hydraulic power source provides power for the oil circulation, the oil pipe provides a path for the oil circulation, and the pressure filter plays the role of filtering impurities in the oil.

[0003] Currently, oil enters the pressure filter cavity through the oil pipe or directly impacts the filter paper, which cannot meet the needs of existing equipment. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a pressure filter structure, a lubrication system and a fuel equipment that can fix the filter element and ensure the filtering accuracy and filtering efficiency.

[0005] In a first aspect, an embodiment of the present application provides a pressure filter structure, comprising: a bypass valve, which is provided with a accommodating chamber; a filter assembly, comprising a filter element and a fixing element, wherein the filter element is arranged in the inner cavity of the fixing element, and the fixing element is connected to the bypass valve, wherein the oil flows out from the bottom of the accommodating chamber after passing through the fixing element, the filter element and the bypass valve in sequence, and / or the oil flows out from the bottom of the accommodating chamber after passing through the bypass valve.

[0006] In the above-mentioned implementation process, a filter element is provided on the outside of the bypass valve, and the fixing element can be used to accommodate the filter element, so that when the pressure filter structure is working, the oil passes through the fixing element and the filter element for filtration, and then enters the accommodating chamber of the bypass valve, and / or directly passes through the bypass valve, which can be used to fix the filter element to avoid the oil from being squeezed and deformed due to excessive impact, and the fixing element can block at least part of the impurities from impacting the filter element with the oil, thereby protecting the filter element from being damaged by impurities and ensuring the filtering efficiency. In the oil channel design and the housing design, the oil channel outlet can be directly directed to the filter element to improve the filtering efficiency, and there is no need to design an oil baffle structure, which is convenient for the oil channel design and the housing design, can save costs, and can also increase the life of the filter element and improve reliability.

[0007] In some embodiments, the filter element is folded so that a side of the filter element close to the accommodating cavity forms a trough, and a side of the filter element away from the accommodating cavity forms a peak.

[0008] In the above implementation process, the filter element can increase the filtration area per unit volume, has a simple and stable structure, and the entire working process of the filter element can increase the filtration area per unit volume, has a simple structure, and ensures filtration accuracy and filtration efficiency.

[0009] In some embodiments, the filter element is folded to form a plurality of V-shaped sub-filter portions.

[0010] In the above-mentioned implementation process, the filter element can increase the filtering area per unit volume, and has a simple and stable structure. In the oil channel design and the housing design, the oil channel outlet can be directly directed to the filter element, thereby improving the filtering efficiency. There is no need to design an oil baffle plate structure, which facilitates the oil channel design and the housing design and can save costs.

[0011] In some embodiments, the bypass valve includes a valve cover and a center tube, the valve cover is connected to the center tube, the filter is sleeved on the outer edge of the center tube, and the center tube is provided with an oil inlet and an oil outlet, the oil inlet is used for the oil to flow into the accommodating cavity of the center tube, and the oil outlet is located on the side of the center tube away from the valve cover, and is used for the oil to flow out of the center tube.

[0012] In the above implementation process, the filter element is sleeved on the filter element, and the valve cover is connected to one side of the center tube, so that when the pressure filter structure is working, the valve cover can withstand the pressure from part of the oil and avoid the filter element from being squeezed and deformed, which is beneficial to the stability of the filter element and improves the filtering accuracy and filtering efficiency.

[0013] In some embodiments, the bypass valve further includes a bypass assembly, at least a portion of the bypass assembly is disposed in the accommodating cavity of the central tube, and is used to connect or close the valve cover and the central tube.

[0014] In the above implementation process, the center tube can be used to accommodate the bypass component, so that when the cavity pressure in the oil equipment is high, the bypass component can connect the valve cover and the center tube, and the oil enters the center tube from the valve cover to ensure oil circulation and avoid blockage.

[0015] In some embodiments, the bypass assembly includes an elastic member and a piston, one end of the elastic member abuts against the central tube, and the other end of the elastic member abuts against the piston, and a side of the piston facing away from the elastic member abuts against the valve cover.

[0016] In the above-mentioned implementation process, the piston abuts against the elastic part and the valve cover respectively. Under normal working conditions, the piston is in a closed state, and the oil can only enter the containing chamber of the center tube after being filtered by the filter element. When the pressure is too high, the piston will gradually open, and part of the oil will enter the interior of the center tube after passing through the piston, thereby ensuring the circulation of the oil and avoiding blockage.

[0017] In some embodiments, the fixing member is arranged on a side of the filter member facing away from the central tube, one end of the fixing member is connected to the valve cover, and the fixing member is provided with a filter hole, and the filter hole is configured to allow the oil to be filtered by the filter member after passing through the fixing member.

[0018] In the above-mentioned implementation process, the fixing part is located on the outside of the filter element, which can be used to fix the filter element to prevent the filter element from being squeezed and deformed due to excessive impact of the oil, and the filter holes on the fixing part can block impurities from impacting the filter element with the oil, thereby protecting the filter element from being damaged by impurities and ensuring the filtering efficiency. In the oil channel design and the shell design, the oil channel outlet can be directly directed to the filter element to improve the filtering efficiency, and there is no need to design an oil baffle plate structure, which is convenient for the oil channel design and the shell design, can save costs, and can also increase the life of the filter element and improve reliability.

[0019] In some embodiments, the pressure filter structure further includes a cover body, wherein the cover body is located on a side of the fixing member facing away from the valve cover.

[0020] In the above-mentioned implementation process, the fixing parts are respectively fixed by the valve cover and the cover body, so as to fix the filter element, thereby preventing the filter element from being squeezed and deformed due to excessive impact of the oil. In the oil channel design and the housing design, the oil channel outlet can be directly directed to the filter element to improve the filtering efficiency, and there is no need to design an oil baffle plate structure, which is convenient for the oil channel design and the housing design, can save costs, and can also increase the life of the filter element and improve reliability.

[0021] In some embodiments, the pressure filter structure further includes a sealing ring, which is sleeved on the cover body. By providing the sealing ring on the cover body, it is beneficial to the sealing between the pressure filter structure and the cavity of the oil device, thereby ensuring that the oil can only pass through the pressure filter structure.

[0022] In a second aspect, the present application further provides a lubrication system, comprising: an oil device; and a pressure filter structure as described in any one of the above items, wherein the pressure filter structure is connected to the oil device.

[0023] Since the lubrication system provided in the second aspect includes a pressure filter structure, the lubrication system has all the technical effects of the pressure filter structure, which will not be elaborated here.

[0024] In a third aspect, the present application also provides a fuel equipment, comprising the lubrication system as described above.

[0025] Since the fuel equipment provided in the third aspect includes a lubrication system, the fuel equipment has all the technical effects of the lubrication system and will not be elaborated here.

[0026] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of the pressure filter provided in the embodiment of the present application;

[0030] Figure 2 A bottom view of the pressure filter structure provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the oil inlet principle of the pressure filter structure provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the internal structure of the pressure filter structure provided in an embodiment of the present application.

[0033] Reference numerals

[0034] 100, bypass valve; 101, valve cover; 102, center tube; 103, elastic member; 104, piston; 105, oil outlet; 200, filter assembly; 201, filter element; 202, fixing member; 300, cover body; 400, sealing ring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0036] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0037] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0038] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0040] Example

[0041] In the filtering and lubrication system of automobile reducers and gearboxes, the hydraulic power source provides power for the oil circulation, the oil pipe provides a path for the oil circulation, and the pressure filter plays the role of filtering impurities in the oil. At present, most of the pressure filters filter impurities in the oil through filter paper. The oil enters the pressure filter cavity through the oil pipe or directly impacts the filter paper. When the system has a low flow demand, the pressure in the oil circuit is small, and the impact force on the filter paper is small. When the system has a high flow demand, the pressure in the oil circuit is large, and the impact force on the filter paper is large. Under long-term oil impact, the filter paper will be squeezed, deformed, and damaged, affecting the filtration efficiency and filtration accuracy; after the filter paper is squeezed and deformed, the filtration area is reduced and the filtration efficiency is reduced; after the filter paper is damaged, the filtration accuracy is reduced, and the size of impurities in the oil becomes larger, which will cause the hydraulic power source to stagnate and affect the cooling and lubrication of the gearbox; deformation and damage of the filter paper may affect the life of the gearbox at the least, and may cause the gearbox to burn out in severe cases, posing a major safety hazard. Therefore, in order to prevent the filter paper from being subjected to a large impact force, the position of the oil inlet in the pressure filter cavity will be restricted in the oil channel design, which brings inconvenience to the housing and oil channel design, or an oil baffle plate will be added to allow the oil to impact the oil baffle plate. This design will make the housing processing more complicated and will not be convenient for housing design.

[0042] In view of this, if Figure 1-Figure 4 As shown, in the first aspect, an embodiment of the present application provides a pressure filter structure, including: a bypass valve 100, which is equipped with a accommodating chamber; a filter assembly 200, including a filter element 201 and a fixing element 202, wherein the filter element 201 is arranged in the inner cavity of the fixing element 202, and the fixing element 202 is connected to the bypass valve 100, wherein the oil passes through the fixing element 202, the filter element 201 and the bypass valve 100 in sequence and then flows out from the bottom of the accommodating chamber, and / or the oil passes through the bypass valve 100 and then flows out from the bottom of the accommodating chamber.

[0043] Exemplarily, the fixing member 202 is fixedly connected to the bypass valve 100, and the filter element 201 is located between the fixing member 202 and the bypass valve 100, wherein when the pressure filter structure is under normal pressure working state, the oil passes through the outside of the fixing member 202, and is filtered by the fixing member 202 and the filter element 201, and then flows into the accommodating chamber.

[0044] It is understandable that the filter element 201 includes but is not limited to filter paper. The filter element 201 can be arranged in a ring shape, or the filter element 201 can be folded to form a preset shape and then placed between the fixing element 202 and the bypass valve 100.

[0045] It should be noted that the fixing member 202 can be a filter housing (for example, an aluminum sheet with circular holes, the diameter of the holes including but not limited to 2-3 mm), or a similar structure that can surround the filter element 201, such as a mesh structure or filter screen made of different materials, etc., and the fixing member 202 can adopt a double-layer filtering structure, so that the outer layer of filtering can also protect the internal filter element 201.

[0046] In the above implementation process, a filter element 201 is provided on the outside of the bypass valve 100, and the fixing element 202 can be used to accommodate the filter element 201, so that when the pressure filter structure is working, the oil passes through the fixing element 202 and the filter element 201 for filtration, and then enters the accommodating chamber of the bypass valve 100, and / or directly passes through the bypass valve 100, which can be used to fix the filter element 201 to avoid the filter element 201 being squeezed and deformed due to excessive impact of the oil, and the fixing element 202 can block at least part of the impurities from impacting the filter element 201 with the oil, thereby protecting the filter element 201 from being damaged by the impurities and ensuring the filtering efficiency. In the oil channel design and the housing design, the oil channel outlet can be directly directed to the filter element 201 to improve the filtering efficiency, and there is no need to design an oil baffle structure, which is convenient for the oil channel design and the housing design, can save costs, and can also increase the life of the filter element 201 and improve reliability.

[0047] like Figure 1 As shown, the filter element 201 is folded, and the ends of the filter element 201 are in contact to form a gear-like structure, so that the filter element 201 forms a trough on the side close to the accommodating cavity and forms a peak on the side away from the accommodating cavity, wherein the filter element 201 can be completely surrounded by the fixing element 202, which is beneficial to protecting the filter element 201.

[0048] In the above implementation process, the filter element 201 can increase the filtering area per unit volume, has a simple and stable structure, and the entire working process of the filter element 201 can increase the filtering area per unit volume, has a simple structure, and ensures filtering accuracy and filtering efficiency.

[0049] In some embodiments, the filter element 201 is folded to form a plurality of V-shaped sub-filter portions, wherein the spacing between two adjacent V-shaped sub-filter portions can be set according to the actual application scenario of the pressure filter structure, which will not be described in detail here.

[0050] In the above-mentioned implementation process, the filter element 201 can increase the filtering area per unit volume, and has a simple and stable structure. In the oil channel design and the shell design, the oil channel outlet can be directly directed to the filter element 201, thereby improving the filtering efficiency. There is no need to design an oil baffle plate structure, which facilitates the oil channel design and the shell design and can save costs.

[0051] Please refer to Figure 1 The bypass valve 100 includes a valve cover 101 and a center tube 102. The valve cover 101 is connected to the center tube 102. The filter element 201 is sleeved on the outer edge of the center tube 102. The center tube 102 is provided with an oil inlet and an oil outlet 105. The oil inlet is used for the oil to flow into the accommodating cavity of the center tube 102. The oil outlet 105 is located on a side of the center tube 102 away from the valve cover 101, and is used for the oil to flow out of the center tube 102.

[0052] Exemplarily, the valve cover 101 and the center tube 102 may be integrally formed, and the cross-sectional dimension of the valve cover 101 is larger than the cross-sectional dimension of the center tube 102, so that the inner side (or outer side) of the valve cover 101 abuts against one end of the fixing member 202. Of course, in order to ensure the sealing between the valve cover 101 and the fixing member 202, a sealing member (such as an O-ring) may be directly provided between the two, wherein the valve cover 101 is located at the upper end of the center tube 102, and the center tube 102 is hollowly arranged to form the accommodating cavity.

[0053] like Figure 4 As shown, it can be understood that in order to meet the actual processing and production procedures and to accommodate more oil, the accommodating cavity of the center tube 102 can be arranged in a stepped shape along its length direction, for example, the size of the accommodating cavity on one side close to the valve cover 101 is larger than the size of the bottom of the accommodating cavity.

[0054] In the above-mentioned implementation process, the filter element 201 is sleeved on the filter element 201, and the valve cover 101 is connected to one side of the center tube 102, so that when the pressure filter structure is working, the valve cover 101 can withstand the pressure from part of the oil and avoid the filter element 201 from being squeezed and deformed, which is beneficial to the stability of the filter element 201 and improves the filtering accuracy and filtering efficiency.

[0055] In some embodiments, the bypass valve 100 further includes a bypass component, at least a portion of which is disposed in the accommodating cavity of the central tube 102 to connect or close the valve cover 101 and the central tube 102 .

[0056] It can be understood that the valve cover 101 is provided with a through hole, and the through hole corresponds to the accommodating cavity of the center tube 102, and the bypass component is located between the through hole and the accommodating cavity, wherein when the bypass component is in a natural state, the bypass component can block the through hole and the accommodating cavity, so that the through hole and the accommodating cavity are not connected, and when the external pressure of the pressure filter reaches a preset value, the pressure can make the bypass component move in the direction away from the valve cover 101, and finally the through hole and the accommodating cavity are connected, so that the oil flows from the through hole into the accommodating cavity.

[0057] In the above implementation process, the center tube 102 can be used to accommodate the bypass component, so that when the cavity pressure in the oil equipment is high, the bypass component can connect the valve cover 101 with the center tube 102, and the oil enters the center tube 102 from the valve cover 101 to ensure oil circulation and avoid blockage.

[0058] In some embodiments, the bypass assembly includes an elastic member 103 and a piston 104, the elastic member 103 includes but is not limited to a spring, the elasticity of the spring can be set according to actual application conditions, one end of the elastic member 103 abuts against the center tube 102, and the other end abuts against the piston 104, and the side of the piston 104 facing away from the elastic member 103 abuts against the valve cover 101.

[0059] In the above-mentioned implementation process, the piston 104 is respectively in contact with the elastic member 103 and the valve cover 101. Under normal working conditions, the piston 104 is in a closed state, and the oil can only enter the accommodating chamber of the central tube 102 after being filtered by the filter element 201. When the pressure is too high, the piston 104 will gradually open, and part of the oil will enter the interior of the central tube 102 after passing through the piston 104, thereby ensuring the circulation of the oil and avoiding blockage.

[0060] In some embodiments, the fixing member 202 is arranged on a side of the filter element 201 away from the central tube 102, one end of the fixing member 202 is connected to the valve cover 101, and the fixing member 202 is provided with a filter hole (which can be used to filter out impurities larger than the filter hole), and the filter hole is configured to allow the oil to pass through the fixing member 202 and then be filtered by the filter element 201.

[0061] In the above-mentioned implementation process, the fixing member 202 is located on the outside of the filter 201, and can be used to fix the filter 201 to prevent the filter 201 from being squeezed and deformed due to excessive impact of the oil, and the filter holes on the fixing member 202 can block impurities from impacting the filter 201 with the oil, thereby protecting the filter 201 from being damaged by impurities and ensuring the filtering efficiency. In the oil channel design and the shell design, the oil channel outlet can be directly directed to the filter 201 to improve the filtering efficiency, and there is no need to design an oil baffle structure, which is convenient for the oil channel design and the shell design, can save costs, and can also increase the life of the filter 201 and improve reliability.

[0062] In some embodiments, the pressure filter structure further includes a cover body 300 , and the cover body 300 is located on a side of the fixing member 202 away from the valve cover 101 .

[0063] In the above-mentioned implementation process, the fixing member 202 is respectively fixed by the valve cover 101 and the cover body 300, so as to fix the filter element 201, thereby preventing the filter element 201 from being squeezed and deformed due to excessive impact of the oil. In the oil channel design and the shell design, the oil channel outlet can be directly directed to the filter element 201 to improve the filtering efficiency, and there is no need to design an oil baffle plate structure, which is convenient for the oil channel design and the shell design, can save costs, and can also increase the life of the filter element 201 and improve reliability.

[0064] In some embodiments, the pressure filter structure further includes a sealing ring 400, which is sleeved on the cover body 300. For example, the sealing ring 400 is an O-ring. By providing the sealing ring 400 on the cover body 300, it is beneficial to the sealing between the pressure filter structure and the cavity of the oil device, thereby ensuring that the oil can only pass through the pressure filter structure.

[0065] In a second aspect, the present application also provides a lubrication system, comprising: an oil device; and a pressure filter structure as described above, wherein the pressure filter structure is connected to the oil device.

[0066] Exemplarily, the oil device may be a reducer, a gearbox, etc., and the pressure filter structure is connected to the interior of the oil device through an oil pipe.

[0067] Since the lubrication system provided in the second aspect includes a pressure filter structure, the lubrication system has all the technical effects of the pressure filter structure, which will not be elaborated here.

[0068] In a third aspect, the present application further provides a fuel equipment, including the lubrication system as described above, wherein the fuel equipment may be an internal combustion engine power equipment for vehicles, engineering machinery, ships, etc., wherein the vehicle may be a fuel vehicle, a hybrid vehicle, an excavator, or a motorcycle, etc.

[0069] Since the fuel equipment provided in the third aspect includes a lubrication system, the fuel equipment has all the technical effects of the lubrication system and will not be elaborated here.

[0070] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0071] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0072] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0073] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pressure filter structure, characterized in that: include: A bypass valve is provided with a receiving chamber; A filter assembly comprises a filter element and a fixing element, wherein the filter element is arranged in an inner cavity of the fixing element, and the fixing element is connected to the bypass valve, wherein the oil flows out from the bottom of the accommodating cavity after passing through the fixing element, the filter element and the bypass valve in sequence, and / or the oil flows out from the bottom of the accommodating cavity after passing through the bypass valve.

2. The pressure filter structure according to claim 1, characterized in that: The filter element is folded so that a side of the filter element close to the accommodating cavity forms a trough, and a side of the filter element away from the accommodating cavity forms a peak.

3. The pressure filter structure according to claim 2, characterized in that: The filter element is folded to form a plurality of V-shaped sub-filtering parts.

4. The pressure filter structure according to claim 2, characterized in that: The bypass valve includes a valve cover and a center tube, the valve cover is connected to the center tube, the filter is sleeved on the outer edge of the center tube, and the center tube is provided with an oil inlet and an oil outlet, the oil inlet is used for the oil to flow into the accommodating chamber of the center tube, and the oil outlet is located on the side of the center tube away from the valve cover, and is used for the oil to flow out of the center tube.

5. The pressure filter structure according to claim 4, characterized in that: The bypass valve further comprises a bypass assembly, at least part of which is arranged in the accommodating cavity of the central tube, so as to connect or close the valve cover and the central tube.

6. The pressure filter structure according to claim 5, characterized in that: The bypass assembly includes an elastic member and a piston. One end of the elastic member abuts against the central tube, and the other end of the elastic member abuts against the piston. The side of the piston facing away from the elastic member abuts against the valve cover.

7. The pressure filter structure according to claim 4, characterized in that: The fixing member is arranged on a side of the filter member away from the central tube, one end of the fixing member is connected to the valve cover, and the fixing member is provided with a filter hole, and the filter hole is configured to allow the oil to pass through the fixing member and then be filtered by the filter member.

8. The pressure filter structure according to claim 7, characterized in that: The pressure filter structure further comprises a cover body, and the cover body is located at a side of the fixing member away from the valve cover.

9. The pressure filter structure according to claim 8, characterized in that: The pressure filter structure further comprises a sealing ring, and the sealing ring is sleeved on the cover body.

10. A lubrication system, characterized in that: include: Oil equipment; and The pressure filter structure according to any one of claims 1 to 9, wherein the pressure filter structure is connected to the oil device.

11. A fuel oil equipment, characterized in that: Comprising the lubrication system of claim 10.

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