CN220125778U - Oil mist separation filter element - Google Patents

Abstract

The utility model discloses an oil mist separation filter element, which includes a lower end cover, an upper end cover and an inner layer filter assembly. The inner layer filter assembly is between the lower end cover and the upper end cover, and a reinforcement puller is provided between the lower end cover and the upper end cover. strip, the inner filter component includes a porous inner frame, an inner filter layer and a porous middle frame. The inner filter layer is filled between the porous inner frame and the porous middle frame. The inner filter layer is composed of fiber filaments, with a packing density of 110kg/m³. An outer filter layer assembly is provided on the outside of the porous middle frame. The outer filter layer assembly includes an outer filter layer and a protective layer. A porous outer frame is provided on the outside of the protective layer. The overall structure has high strength and is easy to disassemble and install. The filter element oil mist It has high purification efficiency, can withstand high oil mist content, and has a long service life, preventing the oil mist particles accumulated on the outer surface of the outer filter layer from being entrained with the air flow when the gas flows out of the filter element body.

Description

An oil mist separation filter element

Technical field

The utility model relates to the technical field of oil mist purification for exhaust from lubricating oil tanks, and is specifically an oil mist separation filter element.

Background technique

Lubricating oil tanks are usually equipped with exhaust ports to ensure constant pressure in the oil tank. The temperature of the lubricating oil in the tank is usually relatively high, and the oil mist will evaporate and be discharged through the exhaust port. The discharge of oil mist will have an impact on the surrounding environment. In order to reduce environmental pollution, oil mist will be installed at the exhaust port. Separator, removes oil mist in exhaust gas and purifies exhaust gas.

Currently, there are three types of oil mist separators: centrifugal type, electrostatic dust collection type and filter type; the oil mist separation filter element installed inside the filter type oil mist separator is currently divided into two structural forms: the first one is as follows As shown in Figure 3, a stainless steel wire gas-liquid separation mesh is filled inside the main body of the filter element, and the coalescence principle is used to remove the oil mist in the exhaust. The disadvantage is that the defects of the gas-liquid mesh itself cause low separation accuracy, and the oil mist content in the exhaust cannot be determined. Meet the environmental requirements of all locations.

The second type is as shown in Figure 4. The internal material of the filter element is made of a variety of glass fiber filter materials, winding or folding. The disadvantage is that the flow resistance is large. When the oil mist in the exhaust is high, it is easy to cause the filter material to The immersed oil mist is saturated, causing failure and short service life.

Chinese patent application number 200420011361.8 discloses an oil and gas separation filter element; this patent is the first patent of this application. This filter element can separate oil and gas, and has efficient water separation, oil removal and dust filtering functions. It can only handle oil and gas with low oil content, but cannot withstand Due to the shortcomings of high oil mist content and short life, and the oil mist particles will be entrained with the air flow, there are defects in structural strength. With the development of technology, the applicant's previous filter element structure cannot meet the actual use needs. This paper proposes an oil mist separation filter element.

Utility model content

The technical problem to be solved by this utility model is to overcome the existing defects and provide an oil mist separation filter element with high structural strength and easy disassembly and installation. The filter element has high oil mist purification efficiency and can withstand high oil mist content and use It has a long service life and prevents the oil mist particles accumulated on the outer surface of the outer filter layer from being entrained out with the air flow when the gas flows out of the filter element body, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solution: an oil mist separation filter element, including a lower end cover, an upper end cover and an inner filter assembly. The inner filter assembly is between the lower end cover and the upper end cover, and the lower end cover and Reinforcement braces are provided between the upper end caps. The inner filter component includes a porous inner frame, an inner filter layer and a porous middle frame. The inner filter layer is filled between the porous inner frame and the porous middle frame. The inner filter layer is composed of fiber filaments. , the packing density is 110kg/m³. An outer filter layer assembly is provided on the outside of the porous middle skeleton. The outer filter layer assembly includes an outer filter layer and a protective layer. A porous outer skeleton is provided on the outer side of the protective layer.

Further, the reinforcing braces are arranged along the circumferential direction of the filter element, and both ends of the reinforcing braces are fixed to the lower end cover and the upper end cover respectively, and the fixing method uses rivets or screws.

Further, the protective layer is made of medium-efficiency filter felt or foam sponge.

Furthermore, the outer filter layer is composed of ultra-fine glass fiber filter materials of different precisions that are wound or folded together.

Further, a handle is provided on the outer side of the upper end cover, and sealant is provided on the corresponding surfaces of the lower end cover and the upper end cover respectively.

Further, a threaded joint or flange is provided on the outside of the lower end cover.

Compared with the existing technology, the beneficial effects of this utility model are:

The overall structure has high strength and is easy to disassemble and install. The filter element has high oil mist purification efficiency, can withstand high oil mist content, and has a long service life, preventing the oil mist particles accumulated on the outer surface of the outer filter layer from flowing out of the filter element when the gas flows out of the filter element body. The air flow is entrained out.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is a schematic structural diagram of the utility model with flanges and reinforced braces;

Figure 3 is a schematic structural diagram of the first existing filter element;

Figure 4 is a schematic structural diagram of the second existing filter element.

In the picture: 1 threaded joint, 2 sealant, 3 lower end cap, 4 protective layer, 5 outer filter layer, 6 porous middle frame, 7 inner filter layer, 8 upper end cap, 9 handle, 10 porous inner frame, 11 porous outer frame Frame, 12 reinforced braces, 13 flanges.

Detailed ways

In the description of the present invention, it should be understood that the terms "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical" The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model, rather than Indicating or implying that the device or component must have a specific orientation, be constructed and operate in a specific orientation, it cannot be construed as a limitation on the present invention.

Please refer to Figures 1-4. The present utility model provides a technical solution: an oil mist separation filter element, including a lower end cover 3, an upper end cover 8 and an inner filter assembly. The inner filter assembly is between the lower end cover 3 and the upper end cover 8. Between the lower end cover 3 and the upper end cover 8, a reinforcing brace 12 is provided. The inner filter assembly includes a porous inner frame 10, an inner filter layer 7 and a porous middle frame 6. The inner filter layer 7 is filled between the porous inner frame 10 and the porous inner frame 6. Between the porous mesoframe 6, the inner filter layer 7 is composed of fiber filaments with a packing density of 110kg/m³. The fiber filaments are a special synthetic fiber filament. Its advantage is that it is lipophilic and hydrophobic. When the gas flows through the synthetic fiber filaments, The oil mist particles will quickly spread, condense, and settle on the outer surface of the fiber, and finally achieve the purpose of separation from the gas. An outer filter layer assembly is provided on the outside of the porous middle skeleton 6. The outer filter layer assembly includes an outer filter layer 5 and Protective layer 4, the outer side of the protective layer 4 is provided with porous outer frame 11, lower end cover 3, upper end cover 8 and inner filter layer 7, outer filter layer 5, protective layer 4, porous inner frame 10 and porous outer frame 11 and other filter layers The main body is bonded with adhesive to form a complete oil mist purification filter element.

Reinforcement braces 12 are arranged along the circumferential direction of the filter element. Both ends of the reinforcement braces 12 are respectively fixed to the lower end cover 3 and the upper end cover 8. The fixation method uses rivets or screws to prevent the lower end cover 3, the upper end cover 8 from falling off and separating from the filter element main body. .

The protective layer 4 is made of medium-efficiency filter felt or foam sponge. The protective layer 4 prevents the oil mist particles accumulated on the outer surface of the outer filter layer 5 from being entrained out with the air flow when the gas flows out of the filter element body.

The outer filter layer 5 is composed of ultra-fine glass fiber filter materials of different precisions that are combined, wound or folded. The outer filter layer 5 can further filter and separate the gas treated by the inner filter layer 7, and remove residual fine oil mist particles and Solid particles, improve the oil mist purification efficiency and particle filtration efficiency of gas.

The outer side of the upper end cover 8 is provided with a handle 9 to facilitate the removal and installation of the filter element. The corresponding surfaces of the lower end cover 3 and the upper end cover 8 are respectively provided with sealants 2 .

A threaded joint 1 or a flange 13 is provided on the outside of the lower end cover 3, and other connection forms can also be used.

The inner filter layer 7 of the filter element of this technical solution innovatively uses fiber filaments to replace the traditional stainless steel gas-liquid separation mesh, and its surface characteristics are more suitable for the coalescence and removal of oil mist in the gas.

Combining the filter layer composed of the packed inner filter layer 7 and the outer filter layer 5 can remove a large amount of oil mist while ensuring the oil mist purification efficiency of the gas.

The above shows and describes the basic principles, main features and advantages of the present utility model. Without departing from the spirit and scope of the present utility model, there are various changes and improvements in the present utility model. These changes and improvements all fall within the scope of the claimed protection. the scope of this utility model.

Claims (6)

1. An oil mist separation filter element, including a lower end cover (3), an upper end cover (8) and an inner filter component, characterized in that: the inner filter component is between the lower end cover (3) and the upper end cover (8) There is a reinforcement tie bar (12) between the lower end cover (3) and the upper end cover (8). The inner filter assembly includes a porous inner frame (10), an inner filter layer (7) and a porous middle frame (6). The inner filter layer (7) is filled between the porous inner skeleton (10) and the porous middle skeleton (6). The inner filter layer (7) is composed of fiber filaments and has a packing density of 110kg/m³. The porous middle skeleton (6) ) is provided with an outer filter layer assembly on the outside. The outer filter layer assembly includes an outer filter layer (5) and a protective layer (4). A porous outer frame (11) is provided on the outside of the protective layer (4). 2. An oil mist separation filter element according to claim 1, characterized in that: the reinforcement brace (12) is arranged along the circumferential direction of the filter element, and both ends of the reinforcement brace (12) are respectively connected with the lower end cover (3) It is fixed with the upper end cover (8) using rivets or screws. 3. An oil mist separation filter element according to claim 1, characterized in that the protective layer (4) is made of medium-efficiency filter felt or foam sponge. 4. An oil mist separation filter element according to claim 1, characterized in that the outer filter layer (5) is composed of ultra-fine glass fiber filter materials of different precisions that are combined, wound or folded. 5. An oil mist separation filter element according to claim 1, characterized in that: the outer side of the upper end cover (8) is provided with a handle (9), and the lower end cover (3) and the upper end cover (8) are provided with a handle (9). Sealants (2) are respectively provided on the corresponding surfaces. 6. An oil mist separation filter element according to claim 5, characterized in that: a threaded joint (1) or a flange (13) is provided on the outside of the lower end cover (3).