Filtering device and lubricating system

Abstract

The utility model relates to a filtering device and a lubricating system. The filtering device comprises a shell, a supporting barrel, a filtering material and a monitoring assembly. The shell is provided with a liquid inlet and a liquid outlet. The supporting cylinder and the filter material are arranged in the shell and divide the space in the shell into a first cavity and a second cavity which can be communicated with each other, the liquid inlet is communicated with the first cavity, the liquid outlet is communicated with the second cavity, the filter material is contained in the first cavity and connected with the supporting cylinder, and the supporting cylinder is used for bearing the filter material to prevent the filter material from deforming. The monitoring assembly is used for sending out a signal when the filter material is blocked. According to the technical scheme, when the filter material is subjected to impact force, the filter material arranged in the first cavity can approach to the second cavity to be attached to the supporting barrel, and at the moment, the part, making contact with the filter material, of the supporting barrel can generate supporting force opposite to the impact force to bear the filter material, so that the filter material is prevented from deforming, and the service life of the filter material is prolonged. The problem that the effective utilization of the filtering area is influenced due to the deformation of the filtering material is avoided, and the problem that the service life is shortened due to the deformation of the filtering material is also avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of lubrication systems, and in particular, to a filtering device and a lubrication system. Background Art

[0002] The lubrication system is a closed-loop circulation system. When in use, the lubricating oil will flow from the lubricating oil tank through the oil supply pipeline to the corresponding lubrication position. However, impurities are inevitable in the lubricating oil, so it is necessary to set a filtering device on the oil supply pipeline to ensure the cleanliness of the lubricating oil. In the related art, the filter material structure strength in the filtering device is poor, and the filter material is easy to deform. The deformation of the filter material affects the effective utilization of the filter area and also reduces the service life of the filter material. When the deformation is serious, the filter material may also detach from the filtering device, causing the filtering device to lose its filtering function. Utility Model Content

[0003] The purpose of the present disclosure is to provide a filtering device and a lubrication system to solve the problem of easy deformation of filter materials in the related art.

[0004] The first object of the present disclosure is to provide a filtering device, comprising:

[0005] The shell is provided with a liquid inlet and a liquid outlet;

[0006] A support tube and a filter material are arranged in the shell and divide the space in the shell into a first cavity and a second cavity that can communicate with each other, the liquid inlet is communicated with the first cavity, the liquid outlet is communicated with the second cavity, the filter material is accommodated in the first cavity and connected to the support tube, and the support tube is used to support the filter material to prevent the filter material from deforming;

[0007] A monitoring component is used to send a signal when the filter material is blocked.

[0008] Optionally, the first cavity is formed between the inner wall surface of the support tube and the shell, the inner wall surface of the support tube encloses the second cavity, the filter material is arranged on the outer wall surface of the support tube, and a plurality of through holes for connecting the first cavity and the second cavity are opened on the wall of the support tube.

[0009] Optionally, the monitoring component includes a signal generating device, a first pressure detection sensor arranged in the first cavity, and a second pressure detection sensor arranged in the second cavity, and the signal generating device is configured to send a signal when the pressure difference between the pressure in the first cavity and the pressure in the second cavity exceeds a preset value.

[0010] Optionally, the filtering device further comprises a mounting assembly, wherein the mounting assembly is used to fix the supporting cylinder and the filter material, wherein:

[0011] The installation assembly includes fixing members respectively arranged at both ends of the support tube, and a plug-in groove is provided on the surface of the fixing member facing the support tube, and the support tube and the filter material are respectively plugged into the plug-in groove.

[0012] Optionally, the mounting assembly further includes a push piece and a mounting rod connected to the shell, the push piece pushes against the fixing piece on one end of the support tube so that the fixing piece on the other end of the support tube pushes against the shell, the mounting rod extends in the same direction as the support tube, and the push piece is adjustably mounted on the mounting rod.

[0013] Optionally, the mounting rod is a threaded rod, the abutting member is provided with a mounting hole for the mounting rod to pass through, and the mounting assembly further comprises a threaded fastener capable of being sleeved on the mounting rod and a sealing member capable of being sleeved on the mounting rod;

[0014] Wherein, the sealing member comprises a first part and a second part, the first part is arranged between the threaded fastener and the abutting member, and the second part is inserted into the mounting hole.

[0015] Optionally, a first limiting step is provided on the end surface of the abutment member facing the support tube, and a second limiting step is provided on the inner wall surface of the shell and is arranged opposite to the first limiting step, wherein the fixing member on one end of the support tube is sleeved on the first limiting step, and the fixing member on the other end of the support tube is sleeved on the second limiting step, and the first limiting step and the second limiting step are used to prevent the fixing member from shifting in the radial direction of the support tube.

[0016] Optionally, a first sealing gasket is provided between the abutting member and the fixing member, and a second sealing gasket is provided between the fixing member and the housing.

[0017] Optionally, the shell is provided with an exhaust valve connected to the first cavity and a liquid discharge valve connected to the second cavity.

[0018] A second object of the present disclosure is to provide a lubrication system comprising the filtering device described in any one of the above.

[0019] Through the above technical solution, the liquid to be filtered will continuously impact the filter material while moving from the first cavity to the second cavity for filtering. Since the filter material is connected to the support tube, when the filter material is subjected to impact force, the filter material arranged in the first cavity will move closer to the second cavity to fit the support tube. At this time, the part of the support tube in contact with the filter material can generate a support force opposite to the impact force to support the filter material and prevent the filter material from deforming. This is conducive to avoiding the problem of affecting the effective utilization of the filter area due to the deformation of the filter material, and is also conducive to avoiding the problem of reduced service life due to the deformation of the filter material. When the filter material is blocked, the filter system of the filter device will fail, and the pressure in the first cavity will be too large to cause damage to the filter device, further damaging the filter material. At this time, the monitoring component can send a signal when the filter material is blocked, reminding the operator to clean and repair the filter material in time to avoid failure of the filter device due to damage to the filter material.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic structural diagram of a filtering device provided in an exemplary embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A magnified view of part A;

[0024] Figure 3 yes Figure 1 A magnified view of part B;

[0025] Figure 4 is a schematic structural diagram of a support cylinder provided in an exemplary embodiment of the present disclosure;

[0026] Figure 5 yes Figure 1 Magnified view of part C.

[0027] Description of Reference Numerals

[0028] 1-shell, 11-first cavity, 12-second cavity, 13-liquid inlet, 14-liquid outlet, 15-cylinder, 16-cover, 17-third cavity, 2-support cylinder, 21-through hole, 3-filter material, 4-monitoring component, 41-first pressure detection sensor, 42-second pressure detection sensor, 5-installation component, 51-fixing part, 511-plug-in slot, 52-winding belt, 53-top part, 54-installation rod, 55-threaded fastener, 56-sealing part, 61-first limiting step, 62-second limiting step, 7-exhaust valve, 8-drain valve, 91-first sealing gasket, 92-second sealing gasket. DETAILED DESCRIPTION

[0029] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0030] In the present disclosure, unless otherwise stated, directional words such as "upper, lower, left, right" generally refer to the position of the relevant components in actual use, and "inside and outside" refer to the inside and outside of the corresponding component outline. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and do not have order or importance.

[0031] like Figures 1 to 5 As shown, the present disclosure provides a filtering device, including a shell 1, a support tube 2, a filter material 3 and a monitoring component 4. The shell 1 is provided with a liquid inlet 13 and a liquid outlet 14. The support tube 2 and the filter material 3 are arranged in the shell 1 and divide the space in the shell 1 into a first cavity 11 and a second cavity 12 that can be connected to each other, the liquid inlet 13 is connected to the first cavity 11, the liquid outlet 14 is connected to the second cavity 12, the filter material 3 is accommodated in the first cavity 11 and connected to the support tube 2, and the support tube 2 is used to support the filter material 3 to prevent the filter material 3 from being deformed. The monitoring component 4 is used to send a signal when the filter material 3 is blocked.

[0032] Through the above technical solution, the liquid to be filtered will continuously impact the filter material 3 while moving from the first cavity 11 to the second cavity 12 for filtering. Since the filter material 3 is connected to the support tube 2, when the filter material 3 is subjected to impact force, the filter material 3 arranged in the first cavity 11 will approach the second cavity 12 to fit the support tube 2. At this time, the part of the support tube 2 in contact with the filter material 3 can generate a supporting force opposite to the impact force to support the filter material 3 and prevent the filter material 3 from deforming, which is conducive to avoiding the problem of affecting the effective utilization of the filter area due to the deformation of the filter material 3, and is also conducive to avoiding the problem of reduced service life due to the deformation of the filter material 3. When the filter material 3 is blocked, the filter system of the filter device will fail, and the pressure in the first cavity 11 will be too large to cause damage to the filter device, further damaging the filter material 3. At this time, the monitoring component can send a signal when the filter material 3 is blocked, reminding the operator to clean and repair the filter material 3 in time to avoid the failure of the filter device due to damage to the filter material 3.

[0033] In some embodiments, a first cavity 11 can be formed between the inner wall surfaces of the support tube 2 and the shell 1, the inner wall surface of the support tube 2 can enclose a second cavity 12, the filter material 3 can be arranged on the outer wall surface of the support tube 2, and a plurality of through holes 21 for connecting the first cavity 11 and the second cavity 12 can be opened on the wall of the support tube 2. The area of ​​the outer wall surface of the bracket should be larger than the area of ​​the inner wall surface of the support tube 2. When the first cavity 11 is formed between the inner wall surfaces of the support tube 2 and the shell 1 and the filter material 3 is arranged on the outer wall surface of the support tube 2, more filter materials 3 can be arranged in the filter device to ensure the filtering effect of the filter device. At the same time, the filter material 3 can be enclosed on the outer wall surface of the entire support tube 2, thereby ensuring the contact area between the filter material 3 and the support tube 2, and further ensuring the effect of the support tube 2 supporting the filter material 3. Reference Figure 1 , and the through hole 21 on the support tube 2 also enables the second cavity 12 and the first cavity 11 to be connected. At the same time, the through hole 21 on the support tube 2 can be punched by laser, so that the through hole 21 is not easy to generate burrs after punching, so as to avoid the generated burrs entering the second cavity under the impact of the liquid and affecting the filtering effect of the filter device. At the same time, taking the application of the filter device to the lubrication system as an example, the liquid to be filtered is lubricating oil, and the support tube 2 can be made of carbon fiber composite material, which has good use strength and good oil resistance.

[0034] In the present application, there is no specific limitation on the manufacturing process of the support tube 2, and any process that can meet the strength requirements of the support tube 2 can be used. For example, when the required size of the support tube 2 is small, the support tube 2 can be made by one-piece molding processes such as die casting, stamping or forging. The integrated design makes the support tube 2 have no seams or welding points, and the support tube 2 has better strength in use. When the required size of the support tube 2 is large, the one-piece molding process may face the problem of a large mold. In this case, a welding splicing process can be selected. For example, a strip-shaped plate can be used. After the plate is spirally bent, the edges are welded, and then the protruding parts at both ends after bending are straightened to obtain the support tube 2. For details, please refer to Figure 4 ,exist Figure 4 In the embodiment, a spiral weld is formed on the support tube 2 formed by the welding splicing process, and the weld can form an effect similar to a reinforcing rib, further ensuring the use strength of the support tube 2.

[0035] Reference Figure 1 ,exist Figure 1 In the figure, the support tube 2 is divided into a left part and a right part, wherein the left part is a cross-sectional view of the support tube 2, and the right part is a structural schematic diagram of the support tube 2. Figure 1 The support tube 2 in the left part is taken as an example and Figure 1 Taking the direction of the drawing as an example, at this time, the filter material 3 is arranged on the outer wall of the support tube 2. When the liquid passes through the filter material 3, the filter material 3 will be subjected to an impact force from left to right. At this time, the support tube 2 can generate a supporting force from right to left to support the filter material 3.

[0036] In some embodiments, the monitoring component 4 may include a signal generating device, a first pressure detection sensor 41 disposed in the first cavity 11, and a second pressure detection sensor 42 disposed in the second cavity 12. The signal generating device is configured as follows: when the pressure difference between the pressure in the first cavity 11 and the pressure in the second cavity 12 exceeds a preset value, the signal generating device sends a signal. When the filter material 3 is clogged, the liquid will be difficult to circulate, so that the liquid in the first cavity 11 will not be able to flow into the second cavity 12, and the pressure in the first cavity 11 will increase. When the pressure difference between the pressure in the first cavity 11 and the pressure in the second cavity 12 exceeds a preset value, it means that the filter element has been clogged and it is difficult to further filter impurities. At this time, the operator can shut down the filter device and replace the filter material 3.

[0037] In addition to the first pressure detection sensor 41 and the second pressure detection sensor 42, the monitoring component 4 may also include a first flow velocity detection sensor arranged in the first cavity 11 and a second flow velocity detection sensor arranged in the second cavity 12. When the filter material 3 is blocked, the liquid will be difficult to flow, so that the liquid in the first cavity 11 will not be able to flow into the second cavity 12, and the flow rate of the liquid in the first cavity 11 and the second cavity 12 will be reduced at the same time. When the flow rate of the liquid detected by the first flow velocity detection sensor and the second flow velocity detection sensor are both less than the preset value, it indicates that the filter element has been blocked.

[0038] The filter device may further include an installation assembly 5, which is used to fix the support tube 2 and the filter material 3, wherein the installation assembly 5 includes fixing members 51 respectively arranged at both ends of the support tube 2, and a plug-in groove 511 is provided on the surface of the fixing member 51 facing the support tube 2, and the support tube 2 and the filter material 3 are respectively plugged into the plug-in groove 511. For details, please refer to Figure 2 and Figure 3 The fixing member 51 is used to fix the filter material 3. The wall of the plug-in groove 511 can prevent the filter material 3 from shifting in the radial direction of the support tube 2, and the bottom of the plug-in groove 511 can prevent the filter material 3 from shifting in the axial direction of the support tube 2, ensuring that the filter material 3 can always cover the support tube 2, and there will be no gap between the filter material 3 and the support tube 2. It is ensured that the liquid will not enter the second cavity 12 from the first cavity 11 without being filtered by the filter material 3, ensuring the use effect of the filtering device.

[0039] The mounting assembly 5 may further include a wrapping tape 52, which is wrapped around the filter material 3 to fix the filter material 3. The wrapping tape 52 can work together with the fixing member 51 to further fix the filter material 3, thereby preventing the filter material 3 from shifting in the axial direction of the support tube 2 and also preventing the filter material 3 from shifting in the radial direction of the support tube 2.

[0040] The mounting assembly 5 may also include a push piece 53 and a mounting rod 54 connected to the shell 1. The push piece 53 pushes against the fixing piece 51 on one end of the support tube 2 so that the fixing piece 51 on the other end of the support tube 2 pushes against the shell 1. The mounting rod 54 extends in the same direction as the support tube 2. The push piece 53 is adjustably mounted on the mounting rod 54. The push piece 53 is used to fix the support tube 2. The push piece 53 pushes against the support tube 2 to push the support tube 2 inside the shell 1 to prevent the position of the support tube 2 from changing and to prevent the liquid outlet 14 from being connected to the first cavity 11. At the same time, the position of the push piece 53 can be adjusted by the mounting rod 54, so that the push piece 53 can adjust the pushing force against the support tube 2, thereby ensuring that the support tube 2 can be fixed while preventing damage to the support tube 2. Refer to Figure 1 , when the support tube 2 is along Figure 1When placed in the up and down directions, the push piece 53 can be set at the upper end of the support tube 2 and push against the support tube 2, and the lower end of the support tube 2 will push against the shell 1. At this time, the mounting rod 54 can extend in the same direction as the support tube 2 and be set in the second cavity 12, one end of the mounting rod 54 is connected to the push piece 53, and the other end of the mounting rod 54 is connected to the shell 1 in the second cavity 12.

[0041] Reference Figure 5 The mounting rod 54 may be a threaded rod, and the push piece 53 may be provided with a mounting hole for the mounting rod 54 to pass through. The mounting assembly 5 also includes a threaded fastener 55 that can be sleeved on the mounting rod 54 and a sealing member 56 that can be sleeved on the mounting rod 54; wherein the sealing member 56 includes a first part and a second part, the first part is arranged between the threaded fastener 55 and the push piece 53, and the second part is inserted into the mounting hole. The threaded fastener 55 here may be a nut, and the threaded fastener 55 can fix the position of the push piece 53 while also pressing the first part between the threaded fastener 55 and the push piece 53, refer to Figure 5 The first part can be a ring-shaped sheet structure, which can prevent the unfiltered liquid in the first cavity 11 from entering the mounting hole along the radial direction of the mounting hole, thereby ensuring the filtering effect of the filtering device. At the same time, the second part of the sealing member 56 can be inserted into the mounting hole to further fill the gap in the mounting hole. Figure 5 The second part can be constructed as a conical cylinder structure, so as to prevent the unfiltered liquid in the first cavity 11 from entering the mounting hole along the axial direction of the mounting hole, further ensuring the filtering effect of the filtering device. The end of the second part can be provided with a conical structure similar to a chamfer, so that the second part can be easily inserted into the mounting hole.

[0042] A first limiting step 61 may be provided on the end surface of the resisting member 53 facing the support tube 2, and a second limiting step 62 arranged opposite to the first limiting step 61 may be provided on the inner wall surface of the housing 1, wherein the fixing member 51 on one end of the support tube 2 is sleeved on the first limiting step 61, and the fixing member 51 on the other end of the support tube 2 is sleeved on the second limiting step 62, and the first limiting step 61 and the second limiting step 62 are used to prevent the fixing member 51 from shifting in the radial direction of the support tube 2. In this way, the two ends of the support tube 2 are respectively sleeved on the first limiting step 61 and the second limiting step 62, and the first limiting step 61 and the second limiting step 62 can limit the support tube 2 in the radial direction of the support tube 2, further preventing the support tube 2 from shifting, and at the same time, the first limiting step 61 can also play a positioning role when the support tube 2 is installed, and the second limiting step 62 can play a positioning role when the resisting member 53 is installed, ensuring that there is no misalignment between the resisting member 53 and the support tube 2.

[0043] A first sealing gasket 91 may be provided between the abutting member 53 and the fixing member 51, and a second sealing gasket 92 may be provided between the fixing member 51 and the housing 1. The first sealing gasket 91 fills the gap between the abutting member 53 and the fixing member 51, preventing the unfiltered liquid in the first cavity 11 from entering the second cavity 12 through the threaded hole. The second sealing gasket 92 fills the gap between the fixing member 51 and the housing 1, preventing the unfiltered liquid in the first cavity 11 from entering the second cavity 12 through the threaded hole. The first sealing gasket 91, the second sealing gasket 92 and the gasket mentioned above can be made of oil-resistant nitrile rubber sealing material or other oil-resistant rubber materials. Taking the application of the filtering device in a lubrication system as an example, the liquid to be filtered is lubricating oil. The use of oil-resistant rubber material can avoid aging of the first sealing gasket 91, the second sealing gasket 92 and the gasket mentioned above in the lubricating oil, and avoid gaps between the aged first sealing gasket 91, the second sealing gasket 92 and the gasket mentioned above, which may cause unfiltered lubricating oil to enter the second cavity 12.

[0044] The housing 1 may include a cylinder 15 having an opening and a cover plate 16 detachably covering the opening, and the filter material 3 is detachably connected to the support cylinder 2. In this way, when the filter material 3 is clogged and needs to be replaced, the operator can enter the housing 1 through the opening and separate the filter material 3 from the support cylinder 2, and install the new filter material 3 on the support cylinder 2 through the opening. At the same time, the operator can also install the above-mentioned abutment 53 or installation rod 54 and other structures in the housing 1 through the opening.

[0045] The housing 1 may be provided with an exhaust valve 7 connected to the first cavity 11 and a drain valve 8 connected to the second cavity 12. When the filter material 3 is clogged and needs to be replaced, the liquid inlet 13 and the liquid outlet 14 can be closed and the exhaust valve 7 and the drain valve 8 can be opened. The drain valve 8 can discharge the liquid in the housing 1. Since the filter element is clogged, the liquid discharged from the drain valve 8 may not filter impurities well at this time, so it cannot be directly discharged from the liquid outlet 14 and used. The liquid discharged from the drain valve 8 can be re-filtered after the filter material 3 is replaced. The drain valve 8 here can be arranged below the housing 1 so that the liquid is discharged from the drain valve 8 as much as possible. The exhaust valve 7 can balance the pressure in the housing 1 and the external environment when the liquid is discharged, ensuring that the liquid in the housing 1 can be continuously discharged. At the same time, after the filter element is replaced, the liquid inlet 13 and the exhaust valve 7 can be opened, and the liquid outlet 14 and the drain valve 8 can be closed, so that the liquid will gradually fill the shell 1. The exhaust valve 7 can discharge the excess gas in the shell 1 when the liquid increases, so that the liquid can enter the shell 1 as much as possible. When the shell 1 is full of liquid, the liquid outlet 14 can be opened and the exhaust valve 7 can be closed. Figure 1 At this time, the exhaust valve 7 can be arranged as far above the shell 1 as possible to exhaust the gas as much as possible.

[0046] Further references Figure 1 A third cavity 17 may be formed below the cylinder 15. The liquid outlet 14 is connected to the second cavity 12 and the third cavity 17 respectively. The third cavity 17 can collect the filtered liquid. A detection device may be further provided in the third cavity 17 to detect whether the liquid is filtered clean. At the same time, the drain valve 8 mentioned above may also be opened on the third cavity 17.

[0047] According to a second aspect of the present disclosure, there is also provided a lubrication system, comprising a filtering device according to any one of the above-mentioned embodiments, and having all its beneficial effects, which will not be described in detail herein.

[0048] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0050] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A filtering device, characterized in that: include: The shell is provided with a liquid inlet and a liquid outlet; A support tube and a filter material are arranged in the shell and divide the space in the shell into a first cavity and a second cavity that can communicate with each other, the liquid inlet is communicated with the first cavity, the liquid outlet is communicated with the second cavity, the filter material is accommodated in the first cavity and connected to the support tube, and the support tube is used to support the filter material to prevent the filter material from deforming; A monitoring component is used to send a signal when the filter material is blocked.

2. The filtering device according to claim 1, characterized in that: The first cavity is formed between the support tube and the inner wall surface of the shell, the inner wall surface of the support tube encloses the second cavity, the filter material is arranged on the outer wall surface of the support tube, and a plurality of through holes for connecting the first cavity and the second cavity are opened on the tube wall of the support tube.

3. The filtering device according to claim 1, characterized in that: The monitoring component includes a signal generating device, a first pressure detection sensor arranged in the first cavity, and a second pressure detection sensor arranged in the second cavity. The signal generating device is configured to send a signal when the pressure difference between the pressure in the first cavity and the pressure in the second cavity exceeds a preset value.

4. The filtering device according to claim 1, characterized in that: The filter device further comprises a mounting assembly, which is used to fix the support tube and the filter material, wherein: The installation assembly includes fixing members respectively arranged at both ends of the support tube, and a plug-in groove is provided on the surface of the fixing member facing the support tube, and the support tube and the filter material are respectively plugged into the plug-in groove.

5. The filtering device according to claim 4, characterized in that: The mounting assembly also includes a push piece and a mounting rod connected to the shell, the push piece pushes against the fixing piece on one end of the support tube so that the fixing piece on the other end of the support tube pushes against the shell, the mounting rod extends in the same direction as the support tube, and the push piece is adjustably mounted on the mounting rod.

6. The filtering device according to claim 5, characterized in that: The mounting rod is a threaded rod, the abutting member is provided with a mounting hole for the mounting rod to pass through, and the mounting assembly further comprises a threaded fastener that can be sleeved on the mounting rod and a sealing member that can be sleeved on the mounting rod; Wherein, the sealing member comprises a first part and a second part, the first part is arranged between the threaded fastener and the abutting member, and the second part is inserted into the mounting hole.

7. The filtering device according to claim 6, characterized in that: A first limiting step is arranged on the end surface of the resisting member facing the supporting tube, and a second limiting step is arranged on the inner wall surface of the shell body opposite to the first limiting step, wherein the fixing member on one end of the supporting tube is sleeved on the first limiting step, and the fixing member on the other end of the supporting tube is sleeved on the second limiting step, and the first limiting step and the second limiting step are used to prevent the fixing member from shifting in the radial direction of the supporting tube.

8. The filtering device according to claim 6, characterized in that: A first sealing gasket is arranged between the abutting member and the fixing member, and a second sealing gasket is arranged between the fixing member and the housing.

9. The filtering device according to claim 1, characterized in that: The shell is provided with an exhaust valve communicated with the first cavity and a liquid discharge valve communicated with the second cavity.

10. A lubrication system, characterized in that: A filter device comprising any one of claims 1 to 9.

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