Efficient oil removal filter element

Abstract

The utility model relates to an efficient oil removal filter element, relates to oil removal filter element technical field, it includes upper cover and lower cover, the upper cover is provided with the vent hole, the vent hole is communicated with the first inner cylinder, the first inner cylinder is sleeved with the first outer cylinder, the active carbon layer is arranged between the first inner cylinder and the first outer cylinder, the lower cover is provided with the lower cover. The first outer cylinder is sleeved with a second inner cylinder, the second inner cylinder is sleeved with a second outer cylinder, a glass fiber layer is arranged between the second inner cylinder and the second outer cylinder, and the side, away from the second inner cylinder, of the second outer cylinder is covered with a non-woven fabric layer. A plurality of filtering holes are formed in the side wall of the first inner cylinder, the side wall of the first outer cylinder, the side wall of the second inner cylinder and the side wall of the second outer cylinder, and one end of the first inner cylinder, one end of the first outer cylinder, one end of the second inner cylinder and one end of the second outer cylinder are all connected with the upper cover in a sealed mode; the other end of the first inner cylinder, the other end of the first outer cylinder, the other end of the second inner cylinder and the other end of the second outer cylinder are all connected with the lower cover in a sealed mode. The compressed air filtering effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil removal filter element technical field especially is related to a kind of high-efficiency oil removal filter element. BACKGROUND

[0002] At present, compressed air is filtered by filter element after being output from air compressor, so as to separate liquid water, water mist, solid impurities and the like in compressed air. The existing filter element is mainly composed of cylindrical filter element body and filter element end cover covering both ends of the filter element body, wherein the filter element body is mostly composed of single filter material.

[0003] Since lubricating oil is needed when air compressor works, oil impurities are carried in compressed air generated by air compressor. However, since the filter element body is mostly composed of single filter material, oil is still carried in compressed air filtered by filter element, which results in poor filtering effect of compressed air. SUMMARY

[0004] In order to facilitate filtering of compressed air and improve filtering effect of compressed air, the application provides a kind of high-efficiency oil removal filter element.

[0005] The high-efficiency oil removal filter element provided by the application adopts the following technical scheme:

[0006] A kind of high-efficiency oil removal filter element, including upper cover and lower cover, the upper cover is penetrated and is equipped with vent hole, the vent hole is connected and is equipped with first inner tube, the first inner tube is equipped with first outer tube, the first inner tube and first outer tube are equipped with activated carbon layer, the first outer tube is equipped with second inner tube, the second inner tube is equipped with second outer tube, the second inner tube and second outer tube are equipped with glass fiber layer, the second outer tube side away from second inner tube is covered with non-woven fabric layer, the first inner tube side wall, first outer tube side wall, second inner tube side wall and second outer tube side wall are equipped with a plurality of filter holes, the first inner tube one end, first outer tube one end, second inner tube one end and second outer tube one end are all sealed with upper cover, the first inner tube other end, first outer tube other end, second inner tube other end and second outer tube other end are all sealed with lower cover.

[0007] By adopting the technical scheme, after the compressed air enters the first inner cylinder through the air hole, the compressed air diffuses to the inside of the activated carbon layer, and then the compressed air is filtered by the activated carbon layer and then enters the glass fiber layer for filtering. After the compressed air is filtered twice by the activated carbon layer and the glass fiber layer, the moisture, oil and impurities in the compressed air are filtered out. The filtered compressed air enters the downstream pipeline through the non-woven fabric layer. The non-woven fabric layer blocks the activated carbon dust carried in the compressed air, reducing the pollution of the downstream pipeline by the activated carbon dust. The three-stage filtering of the compressed air by the activated carbon layer, the glass fiber layer and the non-woven fabric layer achieves the purpose of facilitating the filtration of the compressed air and improves the filtration effect of the compressed air.

[0008] Preferably, the opposite faces of the first inner cylinder and the first outer cylinder are both attached to the activated carbon layer, the opposite faces of the second inner cylinder and the second outer cylinder are both attached to the glass fiber layer, and the side of the second outer cylinder away from the second inner cylinder is attached to the non-woven fabric layer. The activated carbon layer, the glass fiber layer and the non-woven fabric layer all cover the filter holes.

[0009] By adopting the technical scheme, the activated carbon layer covers the filter holes on the first inner cylinder and the filter holes on the first outer cylinder, so that the compressed air passes through the activated carbon layer and then flows to the glass fiber layer, reducing the situation that the compressed air does not flow through the activated carbon layer. The glass fiber layer covers the filter holes on the second inner cylinder and the filter holes on the second outer cylinder, so that the compressed air passes through the glass fiber layer and then flows to the non-woven fabric layer, reducing the situation that the compressed air does not flow through the glass fiber layer. The non-woven fabric layer covers the filter holes on the second outer cylinder, reducing the situation that the compressed air does not flow through the non-woven fabric layer.

[0010] Preferably, the upper cover comprises an upper pressing cover and an upper blocking cover. The upper pressing cover is detachably arranged on the top of the upper blocking cover. An upper air hole is formed through the upper pressing cover. A lower air hole is formed through the upper blocking cover. The upper air hole and the lower air hole are in communication with each other. The upper air hole and the lower air hole together form the air hole. The first outer cylinder and the first inner cylinder are inserted into the lower air hole. The first inner cylinder is in communication with the upper air hole. The top end of the first inner cylinder and the top end of the first outer cylinder are both attached to the bottom wall of the upper pressing cover. An upper ring groove is formed in the bottom wall of the upper blocking cover. The top end of the non-woven fabric layer, the top end of the glass fiber layer, the top end of the second outer cylinder and the top end of the second inner cylinder are all inserted into the upper ring groove. The top wall of the second outer cylinder and the top wall of the second inner cylinder are both fixedly connected to the inner wall of the upper ring groove.

[0011] By adopting the technical scheme, the upper pressing cover and the upper blocking cover together form the upper cover. When the upper pressing cover is detached from the upper blocking cover, the activated carbon layer between the first inner cylinder and the first outer cylinder is exposed, facilitating the replacement of the activated carbon layer by the staff.

[0012] As preferred, a plurality of upper through holes are formed through the upper cover, and a plurality of upper through grooves are formed in the top of the upper cover, and upper bolts are arranged in the upper through holes and the upper through grooves, and the upper bolts pass through the upper through holes and are screwed with the upper through grooves.

[0013] By using the above technical scheme, the upper cover and the upper cover are detachably connected through the upper bolts.

[0014] As preferred, the first outer cylinder is sleeved with an upper rubber ring, the top wall of the upper rubber ring is attached to the bottom wall of the upper cover, the inner ring wall of the upper rubber ring is attached to the outer ring wall of the first outer cylinder, and the outer ring wall of the upper rubber ring is attached to the inner wall of the lower air hole.

[0015] By using the above technical scheme, the upper rubber ring seals the gap between the first outer cylinder, the upper cover and the upper cover, reducing the situation that compressed air does not flow through the activated carbon layer.

[0016] As preferred, the inner wall of the upper ring groove is provided with an upper rubber layer, and the inner ring wall of the second inner cylinder and the outer ring wall of the non-woven fabric layer are attached to the upper rubber layer.

[0017] By using the above technical scheme, the upper rubber layer presses the non-woven fabric layer against the second outer cylinder, and the upper rubber layer seals the gap between the second inner cylinder, the non-woven fabric layer and the upper cover, reducing the situation that the compressed air not fully filtered overflows the filter core.

[0018] As preferred, the lower cover includes a lower cover and a lower cover, the lower cover is provided with a receiving groove, the lower cover is inserted into the receiving groove, the lower cover and the lower cover are detachably connected, the bottom end of the first outer cylinder and the bottom end of the first inner cylinder are fixedly connected with the top wall of the lower cover, the top wall of the lower cover is provided with a lower ring groove, the bottom end of the non-woven fabric layer, the bottom end of the glass fiber layer, the bottom end of the second outer cylinder and the bottom end of the second inner cylinder are inserted into the lower ring groove, and the bottom wall of the second outer cylinder and the bottom wall of the second inner cylinder are attached to the inner wall of the lower ring groove.

[0019] By using the above technical scheme, the lower cover and the lower cover form the lower cover together, and when the lower cover is detached from the lower cover, the glass fiber layer between the second inner cylinder and the second outer cylinder is exposed, facilitating the replacement of the glass fiber layer by the staff.

[0020] As preferred, a plurality of lower through holes are formed through the lower cover, and a plurality of lower through grooves are formed in the bottom of the lower cover, and lower bolts are arranged in the lower through holes and the lower through grooves, and the lower bolts pass through the lower through holes and are screwed with the lower through grooves.

[0021] By using the above technical scheme, the lower cover and the lower cover are detachably connected through the lower bolts.

[0022] As preferred, the first outer cylinder is sleeved with a lower rubber ring, a bottom wall of the lower rubber ring is attached to a top wall of the lower cover, an inner ring wall of the lower rubber ring is attached to an outer ring wall of the first outer cylinder, and an outer ring wall of the lower rubber ring is attached to an inner wall of the accommodating groove.

[0023] By adopting the above technical scheme, the lower rubber ring seals the gap between the first outer cylinder, the lower pressing cover and the lower cover, thereby reducing the case that compressed air does not flow through the activated carbon layer.

[0024] As preferred, the lower ring groove inner wall is provided with a lower rubber layer, and the inner ring wall of the second inner cylinder and the outer ring wall of the non-woven fabric layer are attached to the lower rubber layer.

[0025] By adopting the above technical scheme, the lower rubber layer abuts and compresses the non-woven fabric layer against the second outer cylinder on one hand, and seals the gap between the second inner cylinder, the non-woven fabric layer and the lower pressing cover on the other hand, thereby reducing the case that the compressed air that is not fully filtered overflows the filter element.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. By setting the upper cover, the lower cover, the air hole, the first inner cylinder, the first outer cylinder, the activated carbon layer, the second inner cylinder, the second outer cylinder, the glass fiber layer, the non-woven fabric layer and the filter hole, the compressed air is filtered by the activated carbon layer, the glass fiber layer and the non-woven fabric layer in a three-stage filtering manner, so as to facilitate the filtration of compressed air and improve the filtration effect of compressed air.

[0028] 2. By setting the upper pressing cover, the upper cover, the upper air hole, the lower air hole and the upper ring groove, the activated carbon layer is convenient for workers to replace.

[0029] 3. By setting the lower pressing cover, the lower cover, the accommodating groove and the lower ring groove, the glass fiber layer is convenient for workers to replace. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a sectional view of a high-efficiency oil removal filter element in the embodiment of the present application.

[0031] Figure 2 is Figure 1 is an enlarged view of part A in FIG. 1.

[0032] Figure 3 is Figure 1 is an enlarged view of part B in FIG. 1.

[0033] Figure 4 is a sectional view showing the connection relationship between the upper pressing cover and the upper cover in the embodiment of the present application.

[0034] Figure 5 is a sectional view showing the connection relationship between the lower pressing cover and the lower cover in the embodiment of the present application.

[0035] Explanation of reference signs: 1, upper cover; 11, upper pressing cover; 12, upper blocking cover; 121, upper ring groove; 122, upper adhesive layer; 2, lower cover; 21, lower pressing cover; 211, lower ring groove; 212, lower adhesive layer; 22, lower blocking cover; 221, accommodating groove; 3, air hole; 31, upper air hole; 32, lower air hole; 4, activated carbon layer; 41, first inner cylinder; 42, first outer cylinder; 421, upper adhesive ring; 422, lower adhesive ring; 5, glass fiber layer; 51, second inner cylinder; 52, second outer cylinder; 6, non-woven fabric layer; 7, filter hole; 8, upper bolt; 81, upper through hole; 82, upper through groove; 9, lower bolt; 91, lower through hole; 92, lower through groove. DETAILED DESCRIPTION

[0036] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The application is further described in detail.

[0037] The application discloses a high-efficiency oil-removing filter element. Figure 1, including the upper cover 1 and the lower cover 2, the upper cover 1 is located directly above the lower cover 2. The upper cover 1 is provided with a vent hole 3, and the vent hole 3 is provided with a first inner cylinder 41. The first inner cylinder 41 is coaxially sleeved with a first outer cylinder 42, the first outer cylinder 42 is coaxially sleeved with a second inner cylinder 51, and the second inner cylinder 51 is coaxially sleeved with a second outer cylinder 52. The first inner cylinder 41, the first outer cylinder 42, the second inner cylinder 51 and the second outer cylinder 52 are all cylindrical structures, one end of the first inner cylinder 41, one end of the first outer cylinder 42, one end of the second inner cylinder 51 and one end of the second outer cylinder 52 are all sealingly connected with the upper cover 1, and the other end of the first inner cylinder 41, the other end of the first outer cylinder 42, the other end of the second inner cylinder 51 and the other end of the second outer cylinder 52 are all sealingly connected with the lower cover 2. The first inner cylinder 41, the first outer cylinder 42, the second inner cylinder 51 and the second outer cylinder 52 are stainless steel perforated plates, and a plurality of filter holes 7 are arranged on the side walls of the first inner cylinder 41, the first outer cylinder 42, the second inner cylinder 51 and the second outer cylinder 52. The first inner cylinder 41 and the first outer cylinder 42 are filled with activated carbon to form an activated carbon layer 4, and the opposite surfaces of the first inner cylinder 41 and the first outer cylinder 42 are in close contact with the activated carbon layer 4, and the activated carbon layer 4 covers the filter holes 7 on the first inner cylinder 41 and the filter holes 7 on the first outer cylinder 42. The second inner cylinder 51 and the second outer cylinder 52 are filled with glass fiber to form a glass fiber layer 5, and the opposite surfaces of the second inner cylinder 51 and the second outer cylinder 52 are in close contact with the glass fiber layer 5, and the glass fiber layer 5 covers the filter holes 7 on the second inner cylinder 51 and the filter holes 7 on the second outer cylinder 52. The second outer cylinder 52 away from the second inner cylinder 51 side covers the non-woven fabric to form the non-woven fabric layer 6, and the second outer cylinder 52 away from the second inner cylinder 51 side is in close contact with the non-woven fabric layer 6, and the non-woven fabric layer 6 covers the filter holes 7 on the second outer cylinder 52. After the compressed air enters the first inner cylinder 41 through the vent hole 3, the compressed air diffuses into the activated carbon layer 4, and then the compressed air is filtered through the activated carbon layer 4 and then enters the glass fiber layer 5 for filtering. After the compressed air is filtered twice through the activated carbon layer 4 and the glass fiber layer 5, the moisture, oil, impurities and the like in the compressed air are filtered out. The compressed air filtered twice passes through the non-woven fabric layer 6 and enters the downstream pipeline, and the non-woven fabric layer 6 blocks the activated carbon dust carried in the compressed air, reducing the pollution of the downstream pipeline by the activated carbon dust. Through the three-stage filtering of the compressed air by the activated carbon layer 4, the glass fiber layer 5 and the non-woven fabric layer 6, the purpose of facilitating the filtration of the compressed air is achieved, and the filtration effect of the compressed air is improved.

[0038] In order to facilitate the staff to replace the activated carbon layer 4, with reference to Figures 1 to 4The upper cover 1 comprises an upper pressing cover 11 and an upper blocking cover 12, and the upper pressing cover 11 is installed on the top of the upper blocking cover 12. A plurality of upper through holes 81 are formed through the upper pressing cover 11, and a plurality of upper through grooves 82 are formed on the top of the upper blocking cover 12. Upper bolts 8 are arranged between the upper through holes 81 and the upper through grooves 82 in opposite positions. The upper bolts 8 are screwed with the upper through grooves 82 after penetrating the upper through holes 81, so that the upper pressing cover 11 can be detachably installed on the top of the upper blocking cover 12. An upper air hole 31 is formed through the upper pressing cover 11, and a lower air hole 32 is formed through the upper blocking cover 12. The upper air hole 31 is located above the lower air hole 32. The upper air hole 31 and the lower air hole 32 are in communication with each other, and together constitute an air hole 3. The first outer cylinder 42 and the first inner cylinder 41 are inserted into the lower air hole 32. The first inner cylinder 41 is in communication with the upper air hole 31, and the top end of the first inner cylinder 41 and the top end of the first outer cylinder 42 are in close contact with the bottom wall of the upper pressing cover 11. An upper ring groove 121 is formed on the bottom wall of the upper blocking cover 12. The top end of the non-woven fabric layer 6, the top end of the glass fiber layer 5, the top end of the second outer cylinder 52 and the top end of the second inner cylinder 51 are inserted into the upper ring groove 121. The top wall of the second outer cylinder 52 and the top wall of the second inner cylinder 51 are fixedly connected with the inner wall of the upper ring groove 121. When the upper pressing cover 11 is detached from the upper blocking cover 12, the activated carbon layer 4 between the first inner cylinder 41 and the first outer cylinder 42 is exposed, which facilitates the replacement of the activated carbon layer 4 by the staff.

[0039] With reference to Figures 1 to 4 An upper rubber ring 421 made of rubber is sleeved on the first outer cylinder 42. The top wall of the upper rubber ring 421 is in close contact with the bottom wall of the upper pressing cover 11. The inner ring wall of the upper rubber ring 421 is in close contact with the outer ring wall of the first outer cylinder 42. The outer ring wall of the upper rubber ring 421 is in close contact with the inner wall of the lower air hole 32. The rubber ring seals the gap between the first outer cylinder 42, the upper pressing cover 11 and the upper blocking cover 12, thereby reducing the situation that compressed air does not flow through the activated carbon layer 4.

[0040] With reference to Figures 1 to 4 The inner wall of the upper ring groove 121 is covered with an upper rubber layer 122 made of rubber. The inner ring wall of the second inner cylinder 51 and the outer ring wall of the non-woven fabric layer 6 are in close contact with the upper rubber layer 122. On the one hand, the upper rubber layer 122 abuts and presses the non-woven fabric layer 6 against the second outer cylinder 52. On the other hand, the upper rubber layer 122 seals the gap between the second inner cylinder 51, the non-woven fabric layer 6 and the upper blocking cover 12, thereby reducing the situation that the compressed air not fully filtered overflows the filter element.

[0041] In order to facilitate the replacement of the glass fiber layer 5 by the staff, with reference to Figures 1 to 5The lower cover 2 comprises a lower pressing cover 21 and a lower blocking cover 22. The lower pressing cover 21 is provided with a containing groove 221 at the top end. The lower blocking cover 22 is inserted into the containing groove 221. A plurality of lower through holes 91 are formed through the lower pressing cover 21. A plurality of lower through grooves 92 are formed at the bottom of the lower blocking cover 22. The oppositely arranged lower through holes 91 and the lower through grooves 92 are jointly provided with lower bolts 9. The lower bolts 9 are screwed with the lower through grooves 92 after penetrating through the lower through holes 91, so that the lower blocking cover 22 can be detachably installed in the lower pressing cover 21. The bottom end of the activated carbon layer 4, the bottom end of the first outer cylinder 42 and the bottom end of the first inner cylinder 41 are inserted into the containing groove 221. The bottom end of the first outer cylinder 42 and the bottom end of the first inner cylinder 41 are fixedly connected with the top wall of the lower blocking cover 22. The top wall of the lower pressing cover 21 is provided with a lower ring groove 211. The bottom end of the glass fiber layer 5, the bottom end of the second outer cylinder 52 and the bottom end of the second inner cylinder 51 are inserted into the lower ring groove 211. The bottom wall of the second outer cylinder 52 and the bottom wall of the second inner cylinder 51 are mutually attached to the inner wall of the lower ring groove 211. The lower pressing cover 21 and the lower blocking cover 22 jointly form the lower cover 2. When the lower pressing cover 21 is detached from the lower blocking cover 22, the glass fiber layer 5 between the second inner cylinder 51 and the second outer cylinder 52 is exposed, which facilitates the replacement of the glass fiber layer 5 by the staff.

[0042] Referring to Figures 1 to 5 The lower rubber ring 422 of rubber material is sleeved on the first outer cylinder 42. The bottom wall of the lower rubber ring 422 is mutually attached to the top wall of the lower blocking cover 22. The inner ring wall of the lower rubber ring 422 is mutually attached to the outer ring wall of the first outer cylinder 42. The outer ring wall of the lower rubber ring 422 is mutually attached to the inner wall of the containing groove 221. The lower rubber ring 422 seals the gap between the first outer cylinder 42, the lower pressing cover 21 and the lower blocking cover 22, thereby reducing the situation that the compressed air does not flow through the activated carbon layer 4.

[0043] Referring to Figures 1 to 5 The lower rubber layer 212 of rubber material covers the inner wall of the lower ring groove 211. The inner ring wall of the second inner cylinder 51 and the outer ring wall of the non-woven fabric layer 6 are mutually attached to the lower rubber layer 212. On the one hand, the lower rubber layer 212 abuts and compresses the non-woven fabric layer 6 against the second outer cylinder 52. On the other hand, the lower rubber layer 212 seals the gap between the second inner cylinder 51, the non-woven fabric layer 6 and the lower pressing cover 21, thereby reducing the situation that the compressed air which is not fully filtered overflows the filter element.

[0044] The implementation principle of the high-efficiency oil removal filter element is as follows: compressed air enters the first inner cylinder 41 through the air hole 3, diffuses to the inside of the activated carbon layer 4, and then enters the glass fiber layer 5 for filtration after being filtered by the activated carbon layer 4. After being filtered twice by the activated carbon layer 4 and the glass fiber layer 5, the compressed air is filtered of water, oil, impurities and the like. The compressed air that has been filtered twice is transmitted to the downstream pipeline through the non-woven fabric layer 6. The non-woven fabric layer 6 blocks the activated carbon dust carried in the compressed air, reducing the pollution of the downstream pipeline by the activated carbon dust. The three-stage filtration of the compressed air by the activated carbon layer 4, the glass fiber layer 5 and the non-woven fabric layer 6 achieves the purpose of facilitating the filtration of the compressed air and improves the filtration effect of the compressed air.

[0045] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high efficiency oil removal filter cartridge comprising an upper cover and a lower cover, characterized in that: The upper cover is provided with a ventilation hole, a first inner cylinder is arranged in the ventilation hole, a first outer cylinder is arranged on the first inner cylinder, an activated carbon layer is arranged between the first inner cylinder and the first outer cylinder, a second inner cylinder is arranged on the first outer cylinder, a second outer cylinder is arranged on the second inner cylinder, a glass fiber layer is arranged between the second inner cylinder and the second outer cylinder, a non-woven fabric layer is arranged on the side, away from the second inner cylinder, of the second outer cylinder, a plurality of filter holes are arranged on the side walls of the first inner cylinder, the first outer cylinder, the second inner cylinder and the second outer cylinder, and the first inner cylinder, the first outer cylinder, the second inner cylinder and the second inner cylinder are all sealingly connected with the upper cover.

2. The high efficiency oil removal filter element of claim 1, wherein: The opposite surfaces of the first inner cylinder and the first outer cylinder are both attached to the activated carbon layer, the opposite surfaces of the second inner cylinder and the second outer cylinder are both attached to the glass fiber layer, and the side, away from the second inner cylinder, of the second outer cylinder is attached to the non-woven fabric layer.

3. The high efficiency oil removal filter element of claim 2, wherein: The upper cover comprises an upper pressing cover and an upper blocking cover, the upper pressing cover is detachably arranged on the top of the upper blocking cover, the upper pressing cover is provided with an upper air hole, the upper blocking cover is provided with a lower air hole, the upper air hole and the lower air hole are in communication with each other, the upper air hole and the lower air hole jointly form the ventilation hole, the first outer cylinder and the first inner cylinder are inserted into the lower air hole, the first inner cylinder is in communication with the upper air hole, the top end of the first inner cylinder and the top end of the first outer cylinder are both attached to the bottom wall of the upper pressing cover, the bottom wall of the upper blocking cover is provided with an upper ring groove, the top end of the non-woven fabric layer, the top end of the glass fiber layer, the top end of the second outer cylinder and the top end of the second inner cylinder are all inserted into the upper ring groove, and the top wall of the second outer cylinder and the top wall of the second inner cylinder are both fixedly connected with the inner wall of the upper ring groove.

4. The high efficiency oil removal filter element of claim 3, wherein: A plurality of upper through holes are arranged on the upper pressing cover, a plurality of upper through grooves are arranged on the top of the upper blocking cover, upper bolts are arranged in the upper through holes and the upper through grooves, the upper bolts pass through the upper through holes, and the upper bolts are in threaded connection with the upper through grooves.

5. The high efficiency oil removal filter element of claim 3, wherein: An upper rubber ring is arranged on the first outer cylinder, the top wall of the upper rubber ring is attached to the bottom wall of the upper pressing cover, the inner ring wall of the upper rubber ring is attached to the outer ring wall of the first outer cylinder, and the outer ring wall of the upper rubber ring is attached to the inner wall of the lower air hole.

6. The high efficiency oil removal filter element of claim 3, wherein: An upper rubber layer is arranged on the inner wall of the upper ring groove, and the inner ring wall of the second inner cylinder and the outer ring wall of the non-woven fabric layer are both attached to the upper rubber layer.

7. The high efficiency oil removal filter element of claim 2, wherein: The lower cover comprises a lower pressing cover and a lower blocking cover, the lower pressing cover is provided with a containing groove, the lower blocking cover is inserted into the containing groove, the lower pressing cover and the lower blocking cover are detachably connected, the bottom end of the first outer cylinder and the bottom end of the first inner cylinder are both fixedly connected with the top wall of the lower blocking cover, the top wall of the lower pressing cover is provided with a lower ring groove, the bottom end of the non-woven fabric layer, the bottom end of the glass fiber layer, the bottom end of the second outer cylinder and the bottom end of the second inner cylinder are all inserted into the lower ring groove, and the bottom wall of the second outer cylinder and the bottom wall of the second inner cylinder are both attached to the inner wall of the lower ring groove.

8. The high efficiency oil removal filter element of claim 7, wherein: The lower cover is provided with a plurality of lower through holes, the bottom of the lower cover is provided with a plurality of lower through grooves, and a lower bolt is arranged in the lower through hole and the lower through groove.

9. The high efficiency oil removal filter element of claim 7, wherein: The first outer cylinder is sleeved with a lower rubber ring, the bottom wall of the lower rubber ring is attached to the top wall of the lower cover, the inner ring wall of the lower rubber ring is attached to the outer ring wall of the first outer cylinder, and the outer ring wall of the lower rubber ring is attached to the inner wall of the accommodating groove.

10. The high efficiency oil removal filter element of claim 7, wherein: The inner ring wall of the second inner cylinder and the outer ring wall of the non-woven fabric layer are attached to the lower rubber layer.

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