Cylinder type three-dimensional filter material oil mist filtering device

Abstract

The utility model discloses a cylinder type three-dimensional filter material oil mist filtering device which comprises a cylinder type shell, a supporting structure is installed in the shell and is a hollow cylinder, a sealing cover is fixed on the end face of the supporting structure close to one side of an air outlet, the supporting structure is rotatably connected with the inner wall of the shell through a connecting structure, and the sealing cover is fixed on the inner wall of the shell. The supporting structure is connected with the rotation driving device, and the supporting structure can rotate around the central axis of the shell under the driving of the rotation driving device; a three-dimensional filter material layer is coated and fixed on the outer wall of the supporting structure, and the three-dimensional filter material layer and the inner wall of the shell are arranged at an interval. The device has the characteristics of high efficiency and low resistance to oil mist particles; and the three-dimensional filter material can effectively reduce the blockage of oil mist particles and prolong the cleaning period.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to an oil mist filtering device. Background Art

[0002] Oil mist particles (PM2.5) are a new type of pollutant in advanced manufacturing plant environments. Industrial ventilation systems are a traditional technology for controlling pollutant concentrations in these plants. Pollutants are coarsely filtered through the ventilation system before being released into the atmosphere. The high adhesion of oil mist particles makes them prone to clogging ventilation system filters, dramatically increasing filter resistance and driving up ventilation system energy consumption throughout the year.

[0003] The Chinese patent, publication number CN205084539U, is titled "An Oil Mist Filter Device." The device comprises a metal filter and a plug-in filter pad. The plug-in filter pad is inserted into a slot in the metal filter. Oil mist first flows through the metal filter for primary filtration, then enters the plug-in filter pad for high-efficiency filtration. However, this utility model suffers from low oil mist filtration efficiency, high air resistance, and a short service life.

[0004] Publication number CN202803033U, invention title: Industrial Electrostatic Oil Mist Purifier, Chinese patent. This device is suitable for use in any environment where oil mist is generated and requires purification, such as machining operations. Under the influence of wind pressure from the ventilation system, oil mist of varying concentrations sequentially enters a multi-stage purification unit, including an oil mist separator, pre-filter, electrostatic filter, and post-filter. This unit is then fully purified and returned to the ventilation system. However, electrostatic purifiers have drawbacks such as high initial investment costs, strong dependence on power supplies, and extensive maintenance requirements. Summary of the Invention

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a cylindrical three-dimensional filter material oil mist filtering device which improves the purification and capture efficiency of oil mist particles.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] The utility model discloses a cylindrical three-dimensional filter material oil mist filtering device, comprising a cylindrical shell, with an air inlet flange and an air outlet flange connected to the front and rear ends of the shell respectively, one side of the air inlet flange is the air inlet, and the other side of the air outlet flange is the air outlet; a supporting structure is installed in the shell, the supporting structure is a hollow cylinder, a sealing cover is fixed to the end face of the supporting structure close to the air outlet, the supporting structure is rotatably connected to the inner wall of the shell by a connecting structure, the connecting structure is composed of a plurality of rollers, the plurality of rollers are connected to the supporting structure and supported on the inner wall of the shell, the supporting structure is connected to a rotation drive device, and the supporting structure can rotate around the central axis of the shell under the drive of the rotation drive device;

[0008] A three-dimensional filter material layer is coated and fixed on the outer wall of the support structure. The three-dimensional filter material layer includes a sparse porous filter support layer, an orderly arranged fiber layer and a dense porous filter support layer in sequence from the inner side in contact with the support structure to the outer side. The sparse porous filter support layer and the dense porous filter support layer are yarn woven layers. The three-dimensional filter material layer is spaced apart from the inner wall of the outer shell, and the pore diameter of the sparse porous filter support layer is larger than the pore diameter of the dense porous filter support layer.

[0009] The advantages of the utility model are:

[0010] The main body of the device consists of a cylindrical outer shell and a circular cylindrical filter media, with an air inlet and an air outlet. Dirty air containing oil mist particles enters the three-dimensional filter media through the air inlet. Under the influence of wind pressure, the air passes through the porous filter support layer, the vertical fiber layer, and the dense filter support layer. The support layer filters coarse impurities, while the vertical fiber layer filters small particles. The single three-dimensional filter media achieves a fine particle filtration efficiency of over 70%. Simultaneously, the device rotates at high speed, driven by a rotor, improving efficiency while promoting particle aggregation and discharge, reducing fiber clogging, lowering resistance, and extending service life and cleaning cycles. After passing through the three-dimensional filter media, the air is restrained by the outer shell and flows out through the air outlet, completing the purification process.

[0011] The three-dimensional filter material used in this device features high efficiency and low resistance in filtering oil mist particles. The three-dimensional filter material effectively reduces clogging with oil mist particles, extending cleaning cycles. The fiber filter material also boasts strong structural integrity and is washable and reusable. Furthermore, the circular cylindrical structure of the three-dimensional filter material effectively increases the filtration area, increases dust holding capacity, and extends the service life. This device can be installed as a standalone purification module in an industrial plant's oil mist purification system, making it easy to replace and clean, and effectively purifying industrial plant oil mist particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the cylindrical three-dimensional filter material oil mist filtering device of the present utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the internal structure of the device shown;

[0014] Figure 3 for Figure 2 A schematic diagram of the structure of the three-dimensional composite filter material in the device shown;

[0015] Figure 4 for Figure 1 A schematic structural diagram of the support portion of the device shown;

[0016] Figure 5 for Figure 1 Schematic diagram of gas flow in the device shown. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions and advantages of the present invention clearer, a detailed description is now given in conjunction with specific embodiments and drawings. The embodiments and descriptions are only used to explain the content of the present invention and do not limit its scope.

[0018] As attached Figure 1 As shown, the present invention provides a cylindrical three-dimensional filter media oil mist filter device comprising a cylindrical housing 5. Preferably, a switch door 1 is provided on the side of the cylindrical housing 5, and the switch door 1 is connected to the cylindrical housing via a locking clip. The main function of the switch door 1 is to facilitate the installation and removal of the filter element for inspection, cleaning, or replacement.

[0019] The front and rear ends of the housing 5 are connected to an air inlet flange 2 and an air outlet flange 6, respectively. One side of the air inlet flange 2 is the air inlet 3, and the other side of the air outlet flange is the air outlet. During use of the device, the air inlet flange 2 and the air outlet flange 6 are respectively connected to the ventilation system.

[0020] A support structure 4 is installed in the shell. The support structure is a hollow cylinder. The support structure can be: multiple groups of brackets 16 are arranged at intervals on the left and right and fixedly connected to each other through a connecting structure. The connecting structure can adopt the large-pore grid structure 15 shown in the figure. A sealing cover 14 is fixed on the end face of the support structure 4 close to the air outlet to prevent gas from passing through.

[0021] The support structure is rotationally connected to the inner wall of the shell through a connecting structure. The connecting structure is composed of a plurality of rollers, and the plurality of rollers are connected to the support structure and supported on the inner wall of the shell. In order to ensure stability and uniform load, three rollers are preferably provided, and the rotation axes of the three rollers form an equilateral triangle. The support structure is connected to a rotation drive device, and the support structure can rotate around the central axis of the shell under the drive of the rotation drive device. As an embodiment of the present invention, the rotation drive device includes a driven gear 9 whose rotating shaft is fixedly connected to the support structure, a motor 7 is fixed on the inner wall of the shell, and the rotating shaft of the motor 7 arranged in a direction parallel to the axis of the shell is fixedly connected to the gear shaft of the driving gear 8, and the driven gear 9 is meshed and connected with the driving gear 8. Of course, other existing rotation transmission methods can also be adopted, such as belt transmission.

[0022] A three-dimensional filter material layer 10 is coated and fixed on the outer wall of the support structure. The three-dimensional filter material layer 10 includes a sparse porous filter support layer 11, an orderly arranged fiber layer 12 and a dense porous filter support layer 13 in sequence from the inner side in contact with the support structure to the outer side. The pore diameter of the sparse porous filter support layer 11 is larger than the pore diameter of the dense porous filter support layer; the sparse porous filter support layer 11 and the dense porous filter support layer 13 are yarn woven layers, and the fiber material used in the orderly arranged fiber layer includes polyamide, polypropylene and polyester, etc. The fibers used are arranged in an orderly manner. Compared with ordinary filter materials using materials such as glass fiber and in a disordered arrangement, it has higher mechanical properties and structural strength, making it washable and reusable. The three-dimensional structure of the three-dimensional filter material and its fiber material give it good compression elasticity, air permeability, large spatial structure, light weight and flame retardancy.

[0023] The three-dimensional filter material layer is spaced apart from the inner wall of the outer shell 5 , and the gas can reach the air outlet through the space under the action of the pressure difference.

[0024] The working process and working principle of this device are as follows:

[0025] Housing 5 is the outer structure of the filter unit, capable of withstanding the pressure generated by the fluid flow within, ensuring safety and stability during the filtration process. Furthermore, through flanged connections to the piping system, air containing oil mist contaminants can enter the air inlet of the cartridge-type oil mist purification unit through the ventilation duct. Housing 5 provides a sealed environment for filtration, enabling the three-dimensional filter media within to perform filtering operations under stable conditions.

[0026] The internal support structure 4 is used to fix and support the three-dimensional filter material. The large-pore mesh structure 15 fixes the three-dimensional filter material into a circular cylinder. The large-pore mesh structure allows the gas to pass through fully and reach the three-dimensional filter material. The bracket 16 makes the supporting material a stable cylinder, providing the necessary mechanical support for the filter material to prevent the filter material from collapsing or being damaged. The bottom cover 14 blocks the passage of gas, so that the gas passes through the three-dimensional filter material under the action of the pressure difference, preventing the gas from flowing directly to the air outlet without being filtered.

[0027] The three-dimensional filter media layer 10 is the core component of the cartridge filter. As polluted gas flows through the filter media, it first passes through the pore filter support layer 11, the ordered fiber layer 12, and the dense filter support layer 13. The pore filter support layer 11 is used to filter coarse impurities, the ordered fiber layer 12 is used to filter oil mist particles, and the dense filter support layer 13 is used to filter small particles. Gas is filtered at different layers of the filter media, improving filtration accuracy and efficiency. The ordered fiber layer 12 maintains high permeability, ensuring sufficient airflow velocity and avoiding excessive resistance. Simultaneously, the motor 7, which is connected to the power supply, begins to operate, driving the three-dimensional filter media layer 10 to rotate synchronously via a gear transmission. This rotation ensures that polluted gas evenly contacts every part of the filter element, preventing excessive accumulation or blockage in certain areas and preventing impurities from accumulating in a fixed area on the filter element surface for a long time.

[0028] After the dirty gas passes through the filter material, impurities such as oil mist particles are separated. The gas enters the gap between the filter material and the outer shell, forming an airflow, which flows back into the ventilation duct at the air outlet to complete the purification. This device can be used in the fields of oil mist purification and energy conservation and emission reduction.

[0029] The above description is a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple structural modification, equivalent change, and simple replacement of profiles made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cylindrical three-dimensional filter media oil mist filter device, comprising a cylindrical housing, with an air inlet flange and an air outlet flange connected to the front and rear ends of the housing, respectively, wherein one side of the air inlet flange is an air inlet, and one side of the air outlet flange is an air outlet; characterized in that: A support structure is installed in the shell. The support structure is a hollow cylinder. A sealing cover is fixed to the end face of the support structure near the air outlet. The support structure is rotatably connected to the inner wall of the shell via a connecting structure. The connecting structure is composed of a plurality of rollers. The plurality of rollers are connected to the support structure and supported on the inner wall of the shell. The support structure is connected to a rotation drive device. Driven by the rotation drive device, the support structure can rotate around the central axis of the shell. A three-dimensional filter material layer is coated and fixed on the outer wall of the support structure. The three-dimensional filter material layer includes a sparse porous filter support layer, an orderly arranged fiber layer and a dense porous filter support layer in sequence from the inner side in contact with the support structure to the outer side. The sparse porous filter support layer and the dense porous filter support layer are yarn woven layers. The three-dimensional filter material layer is spaced apart from the inner wall of the outer shell, and the pore diameter of the sparse porous filter support layer is larger than the pore diameter of the dense porous filter support layer.

2. The cartridge-type three-dimensional filter material oil mist filtering device according to claim 1, characterized in that: A switch door is provided on the side of the cylindrical shell, and the switch door is connected to the cylindrical shell through a locking clip.

3. The cartridge-type three-dimensional filter material oil mist filtering device according to claim 1 or 2, characterized in that: There are three rollers, and the rotation axes of the three rollers form an equilateral triangle.

4. The cartridge-type three-dimensional filter material oil mist filtering device according to claim 1 or 2, characterized in that: The rotation drive device includes a driven gear whose rotating shaft is fixedly connected to the support structure. A motor is fixed on the inner wall of the shell. The rotating shaft of the motor arranged parallel to the axis of the shell is fixedly connected to the gear shaft of the driving gear. The driven gear is meshed with the driving gear.

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