Double-filtration type centrifugal oil mist filter

Abstract

The utility model discloses a double-filtration type centrifugal oil mist filter which comprises a shell, a top cover is arranged at the upper end of the shell, and an oil groove is formed in the lower end of the shell; a filter cartridge is arranged in the shell, the upper end of the filter cartridge is connected with the top cover through a fixed flange, and the lower end of the filter cartridge is sleeved with an oil collecting tray; an oil filtering frame is arranged in the shell and arranged on the outer side of the filtering cylinder in a sleeving mode, and the lower end of the oil filtering frame is arranged in the oil groove. A ventilation opening communicated with the interior of the filter cartridge is formed in the top cover; an air inlet is formed in the bottom of the shell. According to the double-filtering type centrifugal oil mist filter, when gas with oil mist enters the shell through the air inlet in the lower portion of the shell, the oil mist gas can be preliminarily filtered through the oil filtering piece of the oil filtering frame, the filtered oil mist is filtered again through the filtering cylinder, double filtering is achieved, condensation of the oil mist on the inner wall of the shell is reduced, and the oil mist filtering effect is improved. The filtering effect is ensured, and the service life of the filter is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil mist filtration, and in particular relates to a double-filtration centrifugal oil mist filter. Background Art

[0002] Oil mist filters are an industrial environmental protection device. They are installed on machining equipment such as machine tools and cleaning machines. Because machine tools and other industrial processes generate large amounts of oil mist, existing oil mist filters are ineffective. When the oil mist volume is high, the oil mist condenses on the inner wall of the housing. Over time, the oil mist accumulates at the bottom of the housing, making cleaning and disassembly inconvenient and shortening the filter's service life. Therefore, a dual-filtration centrifugal oil mist filter was designed to address this problem.

[0003] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a double-filtration centrifugal oil mist filter.

[0005] In order to achieve the above objectives and other related objectives, the technical solution provided by the present invention is as follows: a double-filtration centrifugal oil mist filter, comprising a shell, wherein the upper end of the shell is provided with a top cover, and the lower end of the shell is provided with an oil tank; a filter cartridge is provided inside the shell, the upper end of the filter cartridge is connected to the top cover via a fixed flange, and the lower end of the filter cartridge is sleeved with an oil collecting pan; an oil filter frame is provided inside the shell, the oil filter frame is sleeved on the outside of the filter cartridge, and the lower end of the oil filter frame is provided in the oil tank; the top cover is provided with a vent that communicates with the interior of the filter cartridge, and the bottom of the shell is provided with an air inlet. In this solution, gas containing oil mist enters the shell through the air inlet below the shell, the oil mist gas is filtered by the oil filter frame, the oil body can flow from the oil filter frame into the oil tank, the oil mist gas is filtered by the filter cartridge, and the oil body can flow into the oil collecting pan, thereby achieving double filtration.

[0006] Furthermore, the oil filter frame includes an upper ring body and a lower ring body, with a plurality of oil filter discs disposed between the upper and lower ring bodies. The oil filter discs are evenly distributed around the filter cartridge. In this embodiment, the oil mist gas contacts the oil filter discs and then flows into the oil tank. The oil filter discs arranged around the filter cartridge can improve the efficiency of oil flow into the oil tank.

[0007] Furthermore, the cross section of the oil filter is arc-shaped. In this solution, the oil mist gas contacts the curved oil filter and can be better collected.

[0008] Furthermore, the oil filter is tilted relative to the filter cartridge. In this solution, the tilted setting of the oil filter can guide the oil mist gas, so that the oil mist gas can flow quickly in one direction to achieve efficient filtration.

[0009] Furthermore, a notch is provided at the lower end of the oil filter. In this solution, the design of the notch at the lower end of the oil filter allows the oil to flow into the oil tank more conveniently, thereby improving collection efficiency.

[0010] Furthermore, an oil pipe is connected to the bottom of the oil collecting pan, and one end of the oil pipe, which is away from the oil collecting pan, extends to the outside of the housing. The oil pipe is provided with a branch pipe that communicates with the oil tank. In this solution, the oil in the oil collecting pan and the oil tank is collected by the oil pipe and the branch pipe for easy recycling.

[0011] Furthermore, the bottom of the housing is fixedly connected to a plurality of damping feet arranged in an array. In this embodiment, the damping feet are rubber shock absorbers. When the entire oil mist filter is installed on the top of the equipment, the damping feet 3 contact the top of the equipment and are fixed in place, ensuring the stability of the oil mist filter and facilitating installation.

[0012] Furthermore, the oil collecting pan is fixed to the bottom of the housing by a plurality of brackets, and the brackets are arranged corresponding to the positions of the shock absorbing feet. In this solution, the oil collecting pan is fixed to the position of the housing corresponding to the shock absorbing feet by the brackets, thereby ensuring the stability of the structure.

[0013] Furthermore, the cross-sectional diameter of the oil collecting pan is larger than the cross-sectional diameter of the lower filter cartridge. In this solution, the bottom of the entire filter cartridge is ensured to be inside the oil collecting pan, so that the oil on the filter cartridge will flow into the oil collecting pan.

[0014] Furthermore, the bottom of the inner wall of the oil collecting pan is a slope with high sides and low middle. In this solution, this structure is adopted to ensure that the oil inside the oil collecting pan can be gathered in the middle of the oil collecting pan, which is convenient for flowing out through the oil pipe.

[0015] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0016] The double-filtration centrifugal oil mist filter designed by the utility model realizes double filtration when the gas with oil mist enters the shell through the air inlet below the shell, the oil mist gas can be preliminarily filtered by the oil filter sheet of the oil filter frame, and the filtered oil mist is further filtered by the filter cartridge, thereby reducing the condensation of oil mist on the inner wall of the shell, ensuring the filtering effect and extending the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the filter of the utility model Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the internal structure of the filter of the present invention;

[0020] Figure 4 This is a schematic cross-sectional view of the filter of the present utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the oil filter frame of the utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the oil filter frame of the present utility model;

[0023] Figure 7 It is a side view and partial enlarged schematic diagram of the oil filter frame of the utility model;

[0024] In the above drawings, 1. Shell; 2. Top cover; 3. Oil tank; 4. Filter cartridge; 5. Oil collecting tray; 6. Oil filter rack; 601. Upper ring body; 602. Lower ring body; 603. Oil filter disc; 7. Ventilation port; 8. Air inlet; 9. Notch; 10. Oil pipe; 11. Branch pipe; 12. Shock-absorbing foot; 13. Bracket; 14. Fixing flange. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0030] Example 1:

[0031] See attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4As shown, this embodiment provides a dual-filtration centrifugal oil mist filter, comprising a housing 1, with a top cover 2 disposed at the upper end of the housing 1 and an oil trough 3 disposed at the lower end of the housing 1; a filter cartridge 4 disposed within the housing 1, the upper end of the filter cartridge 4 being connected to the top cover 2 via a fixing flange 14, and an oil collecting pan 5 being sleeved at the lower end of the filter cartridge 4; an oil filter frame 6 disposed within the housing 1, sleeved on the outer side of the filter cartridge 4, with the lower end of the oil filter frame 6 disposed within the oil trough 3; a vent 7 communicating with the interior of the filter cartridge 4 is defined in the top cover 2, and an air inlet 8 is defined at the bottom of the housing 1. In this embodiment, gas containing oil mist enters the housing 1 through the air inlet 8 below the housing 1, the oil mist gas is filtered by the oil filter frame 6, and the oil can flow from the oil filter frame 6 into the oil trough 3, and the oil mist gas is filtered by the filter cartridge 4, and the oil can flow into the oil collecting pan 5, thus achieving dual filtration. The oil filter frame 6 includes an upper ring body 601 and a lower ring body 602. A plurality of oil filter discs 603 are arranged between the upper ring body 601 and the lower ring body 602, and the oil filter discs 603 are evenly distributed around the filter cartridge 4. In this embodiment, the oil mist gas contacts the oil filter discs 603 and then flows into the oil tank 3. The oil filter discs 603 are arranged around the filter cartridge 4, which can improve the efficiency of the oil flowing into the oil tank 3. The cross section of the oil filter disc 603 is arc-shaped. In this embodiment, the oil mist gas contacts the curved oil filter disc 603, which can better achieve collection. See the attached Figure 5 and attached Figure 6 As shown, the oil filter 603 is tilted relative to the filter cartridge 4. In this embodiment, the tilted setting of the oil filter 603 can guide the oil mist gas, so that the oil mist gas can flow quickly in one direction to achieve efficient filtration. Figure 7 As shown, a slot 9 is provided at the lower end of the oil filter 603. In this embodiment, the design of the slot 9 at the lower end of the oil filter 603 allows the oil to flow into the oil tank 3 more conveniently, thereby improving the collection efficiency.

[0032] Example 2:

[0033] See attached Figure 2 and attached Figure 3 As shown, this embodiment is a further improvement on the first embodiment. Specifically, an oil pipe 10 is connected to the bottom of the oil collecting pan 5. The end of the oil pipe 10, away from the oil collecting pan 5, extends to the exterior of the housing 1. A branch pipe 11 is provided on the oil pipe 10, which communicates with the oil tank 3. In this embodiment, the oil in the oil collecting pan 5 and the oil tank 3 is collected by the oil pipe 10 and the branch pipe 11, facilitating recycling.

[0034] Example 3:

[0035] See attached Figure 1 , Attachment Figure 2 and attached Figure 3As shown, this embodiment is a further improvement on the second embodiment. Specifically, the bottom of the housing 1 is fixedly connected to a plurality of arrayed damping feet 12. In this embodiment, the damping feet 12 are rubber shock absorbers. When the entire oil mist filter is installed on the top of the equipment, the damping feet 123 are in contact with the top of the equipment and fixed to the equipment, ensuring the operational stability of the oil mist filter and facilitating installation. The oil collecting pan 5 is fixed to the bottom of the housing 1 via a plurality of brackets 13. The oil collecting pan 5 is fixed by spot welding, and the brackets 13 are positioned corresponding to the position of the damping feet 12. In this embodiment, the oil collecting pan 5 is fixed to the housing 1 at a position corresponding to the damping feet 12 by the brackets 13, ensuring the stability of the structure.

[0036] Example 4:

[0037] This embodiment further improves upon the third embodiment. Specifically, the cross-sectional diameter of the oil collecting pan 5 is larger than that of the lower filter cartridge 4. In this embodiment, the entire bottom of the filter cartridge 4 is ensured to be within the oil collecting pan 5, allowing all oil on the filter cartridge 4 to flow into the pan 5. The bottom of the inner wall of the oil collecting pan 5 is a sloped surface, with higher edges and a lower center. This structure ensures that oil within the oil collecting pan 5 is concentrated in the center, facilitating its outflow through the oil pipe 10.

[0038] The double-filtration centrifugal oil mist filter designed by the utility model realizes double filtration when the gas with oil mist enters the shell through the air inlet below the shell, the oil mist gas can be preliminarily filtered by the oil filter sheet of the oil filter frame, and the filtered oil mist is further filtered by the filter cartridge, thereby reducing the condensation of oil mist on the inner wall of the shell, ensuring the filtering effect and extending the service life of the filter.

[0039] The above implementation methods are only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A double-filtration centrifugal oil mist filter, characterized by: It comprises a housing (1), wherein the upper end of the housing (1) is provided with a top cover (2), and the lower end of the housing (1) is provided with an oil tank (3); A filter cartridge (4) is provided inside the housing (1); the upper end of the filter cartridge (4) is connected to the top cover (2) via a fixed flange (14); and the lower end of the filter cartridge (4) is sleeved with an oil collecting pan (5); An oil filter frame (6) is provided inside the housing (1), the oil filter frame (6) is sleeved on the outside of the filter cartridge (4), and the lower end of the oil filter frame (6) is provided in the oil tank (3); The top cover (2) is provided with a vent (7) communicating with the interior of the filter cartridge (4), and the bottom of the housing (1) is provided with an air inlet (8).

2. The double-filtration centrifugal oil mist filter according to claim 1, characterized in that: The oil filter frame (6) comprises an upper ring body (601) and a lower ring body (602), a plurality of oil filter sheets (603) are provided between the upper ring body (601) and the lower ring body (602), and the oil filter sheets (603) are evenly distributed around the filter cartridge (4).

3. The double-filtration centrifugal oil mist filter according to claim 2, characterized in that: The cross section of the oil filter (603) is arc-shaped.

4. The double-filtration centrifugal oil mist filter according to claim 2, characterized in that: The oil filter sheet (603) is arranged tilted relative to the filter cartridge (4).

5. The double-filtration centrifugal oil mist filter according to claim 2, characterized in that: A notch (9) is provided at the lower end of the oil filter (603).

6. The double-filtration centrifugal oil mist filter according to claim 1, characterized in that: The bottom of the oil collecting pan (5) is connected to an oil pipe (10), one end of the oil pipe (10) away from the oil collecting pan (5) extends to the outside of the housing (1), and a branch pipe (11) communicating with the oil tank (3) is provided on the oil pipe (10).

7. The double-filtration centrifugal oil mist filter according to claim 1, characterized in that: A plurality of array-distributed shock-absorbing feet (12) are fixedly connected to the bottom of the housing (1).

8. The double-filtration centrifugal oil mist filter according to claim 7, characterized in that: The oil collecting pan (5) is fixed to the bottom of the housing (1) via a plurality of brackets (13), and the brackets (13) are arranged correspondingly to the positions of the shock-absorbing feet (12).

9. The double-filtration centrifugal oil mist filter according to claim 1, characterized in that: The cross-sectional diameter of the oil collecting pan (5) is larger than the cross-sectional diameter of the filter cartridge (4).

10. The double-filtration centrifugal oil mist filter according to claim 1, characterized in that: The bottom of the inner wall of the oil collecting pan (5) is a slope with high sides and low center.

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