Multi-filtering engine oil filter

Abstract

The utility model relates to the technical field of engine oil filters, in particular to a multi-filtering engine oil filter which comprises an engine oil filter body, multi-filtering mechanisms are arranged on the inner walls of a mounting solenoid and an inner cylinder body, and oil leakage prevention mechanisms are arranged on the surfaces of a connecting disc and the mounting solenoid. And an oil liquid non-return mechanism is arranged in the engine oil filter body. According to the oil filter disclosed by the utility model, the phenomenon that oil leaks between the mounting screw tube and the mounting screw hole in the using process of the oil filter is avoided, so that the oil can be subjected to multiple filtering treatment when the oil filter is used, and the filtering effect of the oil filter on the oil is better; according to the oil filter, the phenomenon that when the oil filter is used, due to the fact that the filter paper body is blocked, impurities in oil enter a motor, and the motor is damaged is avoided, unfiltered oil can be blocked and stopped when the oil filter is used, and the using effect of the oil filter is better.

Description

Technical Field

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

[0002] A filter is an accessory that filters impurities or gases through filter paper. It generally refers to an automobile filter, which is an engine accessory. It is divided into oil filters, fuel filters (gasoline filters, diesel filters, oil-water separators, hydraulic filters), air filters, air conditioning filters, etc. according to different filtering functions. Now a multi-filtration oil filter is needed.

[0003] First, if the oil filter is not installed tightly enough during use, oil leakage is likely to occur. The existing oil filter has poor anti-leakage performance during use, which makes it inconvenient to install the oil filter during use, and it is easy to cause the oil to seep out from between the mounting screw tube and the mounting screw hole during the use of the oil filter, making the oil filter inconvenient to operate; secondly, the oil filter needs to be filtered multiple times during use, and the existing oil filter usually cannot filter the oil multiple times during use, which reduces the filtering effect of the oil filter on the oil, and it is easy to cause the impurities in the oil to enter the motor due to the clogging of the filter paper body during use, causing the motor to be damaged, which greatly shortens the service life of the oil filter; thirdly, the oil is prone to reflux during use, and the existing oil filter usually does not have the function of checking the oil during use, which easily causes the unfiltered oil to enter the motor through the oil inlet during the use of the oil filter, reducing the use effect of the oil filter. Utility Model Content

[0004] The purpose of the utility model is to provide a multiple-filtration oil filter to solve the problems in the above-mentioned background technology that the oil filter has poor anti-leakage performance when used, cannot perform multiple filtration of the oil, and does not have the function of oil check.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-filter oil filter, comprising an oil filter body, a connecting plate installed on the surface of the oil filter body, an inner wall of the connecting plate installed with a mounting screw hole, one end of the mounting screw hole extending to the interior of the oil filter body, a mounting screw tube threadedly connected to the surface of the mounting screw hole, a filter paper body installed inside the oil filter body, an inner cylinder body installed inside the oil filter body, a multi-filter mechanism is arranged on the inner wall of the mounting screw tube and the inner cylinder body, the interior of the multi-filter mechanism includes a filter screen plate, a screen plate body and a multi-filter part, the surfaces of the connecting plate and the mounting screw tube are both provided with an anti-leakage mechanism, the interior of the anti-leakage mechanism includes a connecting plate, a groove body, an arc-shaped clamp, an arc-shaped clamping groove and a telescopic spring, the interior of the oil filter body is provided with an oil check mechanism, the interior of the oil check mechanism includes a check valve, a fixing part and an oil check group.

[0006] Preferably, the surfaces of the mounting screw and the mounting screw hole are rotatably matched with each other, one end of the mounting screw extends to the interior of the oil filter body, the inner walls of the oil filter body and the connecting plate are both provided with oil inlets, and the oil inlet is connected to the interior of the oil filter body, the inner cylinder body is located inside the filter paper body, the surface of the inner cylinder body is provided with through holes at equal intervals, and the through holes are connected to the interior of the filter paper body, the inner wall of the inner cylinder body is provided with oil inlet through holes at equal intervals, and the oil inlet through holes are connected to the interior of the oil filter body, the inner wall of the oil filter body is installed with an extension spring, the surface of the extension spring is installed with an overflow valve, and one end of the overflow valve extends to the interior of the inner cylinder body.

[0007] Preferably, the surface of the mounting screw is installed with a connecting plate, the inner wall of the connecting plate is provided with a groove body, the interior of the groove body is provided with an arc-shaped clamp for preventing the mounting screw from loosening, and the arc-shaped clamp and the inner wall of the groove body are slidably matched with each other.

[0008] Preferably, the surface of the connecting plate is provided with an arc-shaped groove, the arc-shaped groove and the surface of the arc-shaped clamp are engaged with each other, and the inner wall of the groove body is installed with a telescopic spring, one end of the telescopic spring is fixed to the surface of the arc-shaped clamp.

[0009] Preferably, the multiple filter section is arranged inside the mounting spiral tube and the inner cylinder body, and the multiple filter section is composed of a screen body, a guide groove and a spring body. The inner wall of the mounting spiral tube is installed with a filter screen plate for oil filtering. The inner wall of the oil filter body is installed with a screen body, and one end of the screen body is fixed to the surface of the filter paper body.

[0010] Preferably, the inner wall of the inner cylinder body is provided with a screen body for multiple filtering treatments of the oil, the inner wall of the inner cylinder body is provided with a guide groove, the guide groove and the surface of the screen body are slidably matched with each other, the inner wall of the inner cylinder body is installed with a spring body, one end of the spring body is fixed to the surface at the bottom position of the screen body.

[0011] Preferably, the oil check group is arranged inside the oil filter body, the oil check group is composed of a supporting spring and a telescopic column, the inner wall of the oil filter body is installed with a fixing part, the inside of the oil filter body is provided with a check valve for checking the oil, the diameter of the check valve is larger than the diameter of the oil inlet, and the check valve and the surface of the fixing part are rotatably matched with each other.

[0012] Preferably, the inner wall of the oil filter body is installed with a support spring, one end of which is fixed to the surface of the check valve, and the inner wall of the oil filter body is installed with a telescopic column, one end of which is fixed to the surface of the check valve.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the multiple-filtering oil filter not only makes the oil filter more convenient to install when in use, but also avoids the phenomenon of oil seeping out from between the mounting screw tube and the mounting screw hole during the use of the oil filter, making the oil filter more convenient to operate, and enables the oil filter to perform multiple filtering treatments on the oil when in use, so that the oil filter has a better filtering effect on the oil, and avoids the phenomenon that impurities in the oil enter the motor due to the clogging of the filter paper body when the oil filter is in use, causing the motor to be damaged, so that the service life of the oil filter is greatly extended, and the oil filter can block and check the unfiltered oil when in use, so as to avoid the phenomenon that the unfiltered oil enters the motor through the oil inlet during the use of the oil filter, so that the use effect of the oil filter is better;

[0014] 1. An anti-oil leakage mechanism is provided, and the mounting screw tube is installed inside the mounting screw hole under the thread cooperation of the mounting screw tube and the mounting screw hole. At this time, when the mounting screw tube is installed inside the mounting screw hole, the connecting plate is driven to move under the action of the mounting screw tube. At this time, the arc-shaped clamping piece is driven to move under the elastic force of the telescopic spring inside the groove body, so that the arc-shaped clamping piece is clamped to the inside of the arc-shaped clamping groove. Under the clamping action of the arc-shaped clamping piece and the arc-shaped clamping groove, the connecting plate is installed on the surface of the connecting plate, and the mounting screw tube is prevented from loosening under the action of the arc-shaped clamping piece. Under the action of the connecting plate, oil leakage is prevented between the mounting screw hole and the mounting screw tube, so that the mounting screw tube can be stably installed inside the mounting screw hole, so that the oil filter body is installed at the specified position of the motor, and the oil filter anti-oil leakage function is realized, so that the oil filter is more convenient to install when in use, and the phenomenon of oil seeping from the mounting screw tube and the mounting screw hole during the use of the oil filter is avoided, so that the oil filter is more convenient to operate;

[0015] 2. By setting up multiple filtering mechanisms, the oil is filtered twice under the action of the screen body, and then the oil enters the inside of the mounting screw tube and is filtered again under the action of the filter screen plate. Then, when the surface of the filter paper body is blocked after long-term use of the oil filter body, it is squeezed into the inside of the oil filter body, and the blocked oil is filtered under the action of the screen plate body, so that the oil before entering the motor can be filtered multiple times, realizing the multiple filtering function of the oil filter, so that the oil filter can perform multiple filtering treatments on the oil when it is used, so that the oil filter has a better filtering effect on the oil, avoiding the phenomenon that the impurities in the oil enter the motor due to the blocking of the filter paper body when the oil filter is used, causing the motor to be damaged, and greatly extending the service life of the oil filter;

[0016] 3. An oil check mechanism is provided to check the oil under the action of the check valve. When the oil enters the interior of the oil filter body through the oil inlet, the check valve is driven to rotate on the surface of the fixed part under the action of the weight of the oil. At this time, the check valve is supported by the support spring and the telescopic column, so that the amplitude of the check valve during rotation will not be too large, so that the oil enters the interior of the oil filter body through the gap between the oil inlet and the check valve. At the same time, due to the blocking effect of the check valve, the oil inside the oil filter body will not enter the interior of the motor through the oil inlet, thereby realizing the oil filter's oil check function. Therefore, the oil filter can block and check the unfiltered oil when in use, thereby avoiding the phenomenon that the unfiltered oil enters the interior of the motor through the oil inlet during the use of the oil filter, thereby making the use effect of the oil filter better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of an enlarged top view of the cross section of the utility model;

[0020] Figure 4 For the utility model Figure 2 An enlarged structural diagram of the oil leakage prevention mechanism;

[0021] Figure 5 For the utility model Figure 2 An enlarged structural diagram of the oil check mechanism;

[0022] Figure 6 It is an enlarged structural schematic diagram of the multiple filtering mechanism of the utility model.

[0023] In the figure: 1. Oil filter body; 101. Connecting plate; 102. Mounting screw hole; 103. Mounting screw tube; 104. Filter paper body; 105. Inner tube body; 106. Oil inlet; 107. Oil inlet through hole; 108. Overflow valve; 109. Extension spring; 2. Oil leakage prevention mechanism; 201. Connecting plate; 202. Groove body; 203. Arc-shaped clamp; 204. Arc-shaped clamping groove; 205. Telescopic spring; 3. Multiple filtering mechanism; 301. Filter screen; 302. Screen body; 303. Multiple filtering part; 3031. Screen body; 3032. Guide groove; 3033. Spring body; 4. Oil check mechanism; 401. Check valve; 402. Fixing piece; 403. Oil check group; 4031. Support spring; 4032. Telescopic column. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] The utility model provides a multi-filtration oil filter structure as follows Figure 1 and Figure 2 As shown, it includes an oil filter body 1, a connecting plate 101 is installed on the surface of the oil filter body 1, a mounting screw hole 102 is installed on the inner wall of the connecting plate 101, one end of the mounting screw hole 102 extends to the inside of the oil filter body 1, a mounting screw tube 103 is threadedly connected to the surface of the mounting screw hole 102, the mounting screw tube 103 and the surface of the mounting screw hole 102 are rotatably matched with each other, one end of the mounting screw tube 103 extends to the inside of the oil filter body 1, the oil filter body 1 and the inner wall of the connecting plate 101 are both provided with an oil inlet 106, the oil inlet 106 is connected to the inside of the oil filter body 1, and the oil filter body 1 is provided with a connecting plate 101. A filter paper body 104 is installed inside the body 1, and an inner cylinder body 105 is installed inside the oil filter body 1. The inner cylinder body 105 is located inside the filter paper body 104. The surface of the inner cylinder body 105 is provided with through holes at equal intervals, and the through holes are connected to the inside of the filter paper body 104. The inner wall of the inner cylinder body 105 is provided with oil inlet through holes 107 at equal intervals, and the oil inlet through holes 107 are connected to the inside of the oil filter body 1. An extension spring 109 is installed on the inner wall of the oil filter body 1, and an overflow valve 108 is installed on the surface of the extension spring 109. One end of the overflow valve 108 extends to the inside of the inner cylinder body 105.

[0026] Furthermore, if Figure 2 and Figure 5 As shown, the inner wall of the mounting screw 103 and the inner cylinder body 105 are both provided with a multiple filtering mechanism 3, the interior of the multiple filtering mechanism 3 includes a filter screen 301, a screen body 302 and a multiple filtering part 303, the multiple filtering part 303 is arranged inside the mounting screw 103 and the inner cylinder body 105, the multiple filtering part 303 is composed of a screen body 3031, a guide groove 3032 and a spring body 3033, the inner wall of the mounting screw 103 is provided with a filter screen 301 for filtering the oil, the oil filter body 1 The inner wall of the inner cylinder body 105 is installed with a mesh body 302, one end of the mesh body 302 is fixed to the surface of the filter paper body 104, the inner wall of the inner cylinder body 105 is provided with a screen body 3031 for multiple filtering of the oil, the inner wall of the inner cylinder body 105 is provided with a guide groove 3032, the guide groove 3032 and the surface of the screen body 3031 slide with each other, the inner wall of the inner cylinder body 105 is installed with a spring body 3033, one end of the spring body 3033 is fixed to the surface at the bottom position of the screen body 3031.

[0027] During implementation, the engine oil enters the interior of the inner cylinder body 105 through the oil inlet hole 107, and the screen body 3031 is driven to move under the elastic force of the spring body 3033, so that the screen body 3031 moves slightly inside the guide groove 3032, and will not block the amount of engine oil entering. At this time, the engine oil is subjected to secondary filtering treatment under the action of the screen body 3031, and then the engine oil enters the interior of the mounting screw tube 103, and is filtered again under the action of the filter screen plate 301. Subsequently, when the surface of the filter paper body 104 is blocked due to long-term use of the oil filter body 1, it is squeezed into the interior of the oil filter body 1, and the blocked engine oil is filtered under the action of the screen plate body 302, so that the engine oil before entering the motor can undergo multiple filtering treatments to realize the multiple filtering function of the oil filter.

[0028] Furthermore, if Figure 2 and Figure 4 As shown, the surfaces of the connecting disk 101 and the mounting screw 103 are both provided with an anti-leakage mechanism 2, and the interior of the anti-leakage mechanism 2 includes a connecting plate 201, a groove body 202, an arc-shaped clamp 203, an arc-shaped clamping groove 204 and a telescopic spring 205. The surface of the mounting screw 103 is installed with a connecting plate 201, and the inner wall of the connecting plate 201 is provided with a groove body 202. The interior of the groove body 202 is provided with an arc-shaped clamp 203 for preventing the mounting screw 103 from loosening. The arc-shaped clamp 203 and the inner wall of the groove body 202 slide with each other. The surface of the connecting disk 101 is provided with an arc-shaped clamping groove 204, and the arc-shaped clamping groove 204 and the surface of the arc-shaped clamp 203 are mutually engaged. The inner wall of the groove body 202 is installed with a telescopic spring 205, and one end of the telescopic spring 205 is fixed to the surface of the arc-shaped clamp 203.

[0029] During implementation, the connecting plate 201 is driven to move under the action of the installing screw 103. At this time, the arc-shaped clamp 203 is driven to move under the elastic force of the telescopic spring 205 inside the groove body 202, so that the arc-shaped clamp 203 is clamped to the inside of the arc-shaped clamping groove 204. Under the clamping action of the arc-shaped clamp 203 and the arc-shaped clamping groove 204, the connecting plate 201 is installed on the surface of the connecting disk 101, and the installing screw 103 is prevented from loosening under the action of the arc-shaped clamp 203. Under the action of the connecting plate 201, oil leakage is prevented between the installing screw hole 102 and the installing screw 103, so that the installing screw 103 can be stably installed in the inside of the installing screw hole 102, so that the oil filter body 1 is installed at the specified position of the motor to realize the function of preventing oil leakage of the oil filter.

[0030] Furthermore, if Figure 2 and Figure 6As shown, the interior of the oil filter body 1 is provided with an oil check mechanism 4, the interior of the oil check mechanism 4 includes a check valve 401, a fixing member 402 and an oil check group 403, the oil check group 403 is arranged inside the oil filter body 1, and the oil check group 403 is composed of a support spring 4031 and a telescopic column 4032. The inner wall of the oil filter body 1 is installed with a fixing member 402, and the interior of the oil filter body 1 is provided with a The check valve 401 for oil check has a diameter larger than the diameter of the oil inlet 106, the check valve 401 and the surface of the fixing part 402 are rotatably matched with each other, the inner wall of the oil filter body 1 is installed with a support spring 4031, one end of the support spring 4031 is fixed to the surface of the check valve 401, and the inner wall of the oil filter body 1 is installed with a telescopic column 4032, one end of the telescopic column 4032 is fixed to the surface of the check valve 401.

[0031] During implementation, the weight of the engine oil drives the check valve 401 to rotate on the surface of the fixing member 402. At this time, the check valve 401 is supported by the joint action of the support spring 4031 and the telescopic column 4032, so that the amplitude of the check valve 401 during the rotation will not be too large, so that the engine oil enters the interior of the oil filter body 1 through the gap between the oil inlet 106 and the check valve 401. At the same time, due to the blocking effect of the check valve 401, the engine oil inside the oil filter body 1 will not enter the interior of the motor through the oil inlet 106, so as to realize the oil filter's function of checking the oil.

[0032] Working principle: When in use, first place the oil filter body 1 at the designated position, the user places the mounting screw 103 on the surface of the connecting plate 101, so that the mounting screw 103 is located on one side of the mounting screw hole 102, the user rotates the mounting screw 103, and installs the mounting screw 103 inside the mounting screw hole 102 under the threaded cooperation between the mounting screw 103 and the mounting screw hole 102. At this time, when the mounting screw 103 is installed inside the mounting screw hole 102, the connecting plate 201 is driven to move under the action of the mounting screw 103. At this time, the arc-shaped clamp 203 is driven to move under the elastic force of the telescopic spring 205 inside the groove body 202, so that the arc-shaped clamp 203 is clamped to the inside of the arc-shaped clamping groove 204 Under the action of the arc-shaped clamping piece 203 and the arc-shaped clamping groove 204, the connecting plate 201 is installed on the surface of the connecting disk 101, and the mounting screw 103 is prevented from loosening under the action of the arc-shaped clamping piece 203. Under the action of the connecting plate 201, oil leakage is prevented between the mounting screw hole 102 and the mounting screw 103, so that the mounting screw 103 can be stably installed inside the mounting screw hole 102, so that the oil filter body 1 is installed at the specified position of the motor to realize the oil filter leakage prevention function, so that the oil filter is more convenient to install when in use, and the phenomenon of oil seeping out from between the mounting screw 103 and the mounting screw hole 102 during the use of the oil filter is avoided, making the oil filter more convenient to operate.

[0033] Subsequently, the engine oil enters the interior of the oil filter body 1 through the oil inlet 106, and the impurities in the engine oil are filtered under the action of the filter paper body 104. The impurities in the engine oil remain on the surface of the filter paper body 104. Subsequently, when the surface of the oil filter body 1 is blocked after long-term use, the engine oil will jump through the filter paper body 104, push open the overflow valve 108, and directly enter the interior of the motor through the mounting screw 103. The impurities in the unfiltered engine oil will damage the motor.

[0034] Subsequently, after the engine oil is filtered inside the filter paper body 104, the engine oil enters the interior of the inner cylinder body 105 through the oil inlet through hole 107, and the screen body 3031 is driven to move under the elastic force of the spring body 3033, so that the screen body 3031 moves slightly inside the guide groove 3032, and does not block the amount of engine oil entering. At this time, the engine oil is filtered for a second time under the action of the screen body 3031, and then the engine oil enters the interior of the mounting screw tube 103, and is filtered again under the action of the filter screen plate 301. Subsequently, when the oil filter body 1 uses the filter paper for a long time, the engine oil will be filtered again. After the surface of the body 104 is blocked, it is squeezed into the interior of the oil filter body 1, and the blocked oil is filtered under the action of the mesh body 302, so that the oil before entering the motor can be subjected to multiple filtering treatments to realize the multiple filtering function of the oil filter, so that the oil filter can perform multiple filtering treatments on the oil when in use, so that the oil filter has a better filtering effect on the oil, and avoids the phenomenon that impurities in the oil enter the interior of the motor due to the blocking of the filter paper body 104 when the oil filter is in use, causing the motor to be damaged, so that the service life of the oil filter is greatly extended.

[0035] Subsequently, the engine oil is prevented from returning under the action of the check valve 401. When the engine oil enters the interior of the oil filter body 1 through the oil inlet 106, the check valve 401 is driven to rotate on the surface of the fixing member 402 under the action of the weight of the engine oil. At this time, the check valve 401 is supported by the joint action of the support spring 4031 and the telescopic column 4032, so that the amplitude of the check valve 401 during the rotation process is not too large, so that the engine oil enters the oil filter through the gap between the oil inlet 106 and the check valve 401. At the same time, due to the blocking effect of the check valve 401, the oil inside the oil filter body 1 will not enter the interior of the motor through the oil inlet 106, so as to realize the oil filter's oil check function, so that the unfiltered oil can be blocked and checked when the oil filter is in use, avoiding the phenomenon that the unfiltered oil enters the interior of the motor through the oil inlet 106 during the use of the oil filter, making the use effect of the oil filter better, and finally completing the use of the oil filter.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A multi-filtration oil filter, comprising an oil filter body (1), characterized in that: The surface of the oil filter body (1) is mounted with a connection plate (101), the inner wall of the connection plate (101) is mounted with a mounting screw hole (102), one end of the mounting screw hole (102) extends into the interior of the oil filter body (1), the surface of the mounting screw hole (102) is threadedly connected with a mounting screw tube (103), the interior of the oil filter body (1) is mounted with a filter paper body (104), the interior of the oil filter body (1) is mounted with an inner cylinder body (105), the mounting screw tube (103) and the inner wall of the inner cylinder body (105) are both provided with a multiple filtering mechanism (3), the multiple filtering mechanism The interior of the oil filter body (3) includes a filter screen (301), a screen body (302) and a multiple filter part (303); the surfaces of the connecting plate (101) and the mounting screw tube (103) are both provided with an anti-leakage mechanism (2); the interior of the anti-leakage mechanism (2) includes a connecting plate (201), a groove body (202), an arc-shaped clamping piece (203), an arc-shaped clamping groove (204) and a telescopic spring (205); the interior of the oil filter body (1) is provided with an oil check mechanism (4); the interior of the oil check mechanism (4) includes a check valve (401), a fixing piece (402) and an oil check group (403).

2. The multi-filtration oil filter according to claim 1, characterized in that: The mounting screw tube (103) and the surface of the mounting screw hole (102) are rotatably matched with each other. One end of the mounting screw tube (103) extends to the interior of the oil filter body (1). The inner wall of the oil filter body (1) and the connecting plate (101) are both provided with an oil inlet (106). The oil inlet (106) is connected to the interior of the oil filter body (1). The inner cylinder body (105) is located inside the filter paper body (104). The surface of the inner cylinder body (105) is both provided with The inner wall of the inner cylinder body (105) is provided with oil inlet through holes (107) at equal intervals, and the oil inlet through holes (107) are connected to the interior of the oil filter body (1). The inner wall of the oil filter body (1) is provided with an extension spring (109), and a relief valve (108) is installed on the surface of the extension spring (109), and one end of the relief valve (108) extends to the interior of the inner cylinder body (105).

3. The multi-filtration oil filter according to claim 1, characterized in that: The surface of the mounting screw tube (103) is installed with a connecting plate (201), the inner wall of the connecting plate (201) is provided with a groove body (202), and the interior of the groove body (202) is provided with an arc-shaped clamping piece (203) for preventing the mounting screw tube (103) from loosening, and the arc-shaped clamping piece (203) and the inner wall of the groove body (202) are slidably matched with each other.

4. The multi-filtration oil filter according to claim 1, characterized in that: The surface of the connection disk (101) is provided with an arc-shaped groove (204), and the arc-shaped groove (204) and the surface of the arc-shaped clamping piece (203) are mutually engaged and matched. The inner wall of the groove body (202) is installed with a telescopic spring (205), and one end of the telescopic spring (205) is fixed to the surface of the arc-shaped clamping piece (203).

5. The multi-filtration oil filter according to claim 1, characterized in that: The multiple filter section (303) is arranged inside the mounting spiral tube (103) and the inner cylinder body (105), and the multiple filter section (303) is composed of a screen body (3031), a guide groove (3032) and a spring body (3033). The inner wall of the mounting spiral tube (103) is installed with a filter screen plate (301) for filtering oil, and the inner wall of the oil filter body (1) is installed with a screen plate body (302), and one end of the screen plate body (302) is fixed to the surface of the filter paper body (104).

6. The multi-filtration oil filter according to claim 1, characterized in that: The inner wall of the inner cylinder body (105) is provided with a screen body (3031) for multiple filtering of oil, the inner wall of the inner cylinder body (105) is provided with a guide groove (3032), the guide groove (3032) and the surface of the screen body (3031) are slidably matched with each other, and the inner wall of the inner cylinder body (105) is installed with a spring body (3033), one end of the spring body (3033) is fixed to the surface at the bottom position of the screen body (3031).

7. The multi-filtration oil filter according to claim 1, characterized in that: The oil check group (403) is arranged inside the oil filter body (1), and the oil check group (403) is composed of a support spring (4031) and a telescopic column (4032). The inner wall of the oil filter body (1) is installed with a fixing part (402). The inside of the oil filter body (1) is provided with a check valve (401) for checking the oil. The diameter of the check valve (401) is larger than the diameter of the oil inlet (106), and the surface of the check valve (401) and the fixing part (402) are rotatably matched with each other.

8. The multi-filtration oil filter according to claim 7, characterized in that: The inner wall of the oil filter body (1) is installed with a support spring (4031), one end of which is fixed to the surface of the check valve (401); the inner wall of the oil filter body (1) is installed with a telescopic column (4032), one end of which is fixed to the surface of the check valve (401).

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