Filtering device for metal processing cutting oil

Abstract

The utility model relates to the technical field of filtering devices, in particular to a filtering device for metal processing cutting oil, which comprises a shell, a first-stage filtering tank and a second-stage filtering tank are arranged in the shell, the top of the first-stage filtering tank is communicated with the top of the second-stage filtering tank, a rotating shaft is rotatably arranged in the first-stage filtering tank, and a second-stage filtering tank is arranged in the second-stage filtering tank. A magnetic roller sleeves the rotating shaft, a driving motor for driving the rotating shaft to rotate is mounted on the outer side of the shell, the magnetic roller is arranged close to the joint of the primary filter tank and the secondary filter tank, a scraping plate is obliquely and fixedly arranged on the inner side of the shell, and the top end of the scraping plate is tightly attached to the outer side of the magnetic roller. A magnetic fiber bundle filter assembly is horizontally arranged in the secondary filter tank, and an oil outlet pipe is arranged at the bottom of the secondary filter tank; according to the utility model, the filtering efficiency and precision are improved, the cleanliness of the cutting oil can be effectively improved, and the requirement of high-precision processing on the quality of the cutting oil is met.

Description

A filtration device for metalworking cutting oil Technical Field

[0001] This utility model relates to the field of filtration device technology, and more specifically to a filtration device for metalworking cutting oil. Background Technology

[0002] In metalworking, the use of cutting oil is crucial. It plays a vital role in cooling, lubrication, and chip removal, thereby improving machining quality and tool life. While cutting oil is recycled and reused during machining, as cutting progresses, a large amount of metal debris mixes into the oil. This debris not only reduces the cutting oil's lubrication and cooling performance but can also lead to wear and reduced precision of the machining equipment.

[0003] Existing cutting oil filtration technologies mainly suffer from the following problems: While cartridge-type filters can effectively intercept impurities, the cartridges are prone to clogging and require frequent replacement, leading to increased operating costs; gravity settling filters rely on natural settling, which is time-consuming and has poor separation effect on fine particles; in actual metal processing, the size of metal chips varies greatly, ranging from millimeter-sized block chips to micron-sized fine particles, making it difficult for a single filtration structure to achieve efficient filtration, resulting in the cutting oil cleanliness failing to meet the requirements of high-precision machining. Summary of the Invention

[0004] The purpose of this invention is to provide a filtration device for metalworking cutting oil, which improves filtration efficiency and accuracy.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A metalworking cutting oil filtration device includes a housing, within which a primary filtration tank and a secondary filtration tank are provided, the tops of which are connected. A rotating shaft is rotatably mounted in the primary filtration tank, and a magnetic roller is sleeved on the rotating shaft. A drive motor for driving the rotating shaft is mounted on the outside of the housing. The magnetic roller is positioned near the connection between the primary and secondary filtration tanks. A scraper is obliquely fixed inside the housing, with its top end close to the outside of the magnetic roller. A magnetic fiber bundle filter assembly is horizontally arranged in the secondary filtration tank, and an oil outlet pipe is provided at the bottom of the secondary filtration tank.

[0007] Furthermore, the magnetic roller includes an inner cylinder fixedly sleeved on the rotating shaft, an outer cylinder installed on the outside of the inner cylinder, both the inner cylinder and the outer cylinder being formed of non-magnetic material, and a plurality of magnets being arranged circumferentially between the inner cylinder and the outer cylinder.

[0008] Furthermore, each of the magnets displays magnetic poles of different polarities on its inner and outer circumferential surfaces, and the S and N poles are alternately arranged circumferentially.

[0009] Furthermore, the outer surface of the outer cylinder is provided with anti-slip texture.

[0010] Furthermore, the magnetic fiber bundle filter assembly is inserted into the housing.

[0011] Furthermore, the magnetic fiber bundle filter assembly includes a filter frame and a magnetic fiber bundle filter screen disposed inside the filter frame. The magnetic fiber bundle filter screen is made of iron-nickel alloy soft magnetic material, and an excitation coil is embedded in the filter frame.

[0012] Furthermore, the surface of the magnetic fiber bundle filter is coated with an oil-resistant and corrosion-resistant coating.

[0013] Furthermore, an electric heating plate is embedded within the housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This application first uses a magnetic roller to adsorb and filter large metal particles in the cutting oil; then a magnetic fiber bundle filter assembly further filters the cutting oil after the magnetic roller filtration to remove fine metal particles, improving filtration efficiency and precision, effectively enhancing the cleanliness of the cutting oil and meeting the quality requirements of high-precision machining. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of this utility model.

[0017] 1. Shell; 101. Primary filter tank; 102. Secondary filter tank; 2. Rotating shaft; 3. Magnetic roller; 31. Inner cylinder; 32. Outer cylinder; 33. Magnet; 4. Scraper; 5. Magnetic fiber bundle filter assembly; 51. Filter screen frame; 52. Magnetic fiber bundle filter screen; 6. Oil outlet pipe. Detailed Implementation

[0018] As shown in Figure 1, a metalworking cutting oil filtration device includes a housing 1. The housing 1 contains a primary filtration tank 101 and a secondary filtration tank 102, with their tops connected. A rotating shaft 2 is rotatably mounted inside the primary filtration tank 101, and a magnetic roller 3 is sleeved on the rotating shaft 2. A drive motor for rotating the rotating shaft 2 is mounted on the outside of the housing 1. The magnetic roller 3 is positioned near the connection point between the primary and secondary filtration tanks 101 and 102. A scraper 4 is obliquely fixed inside the housing 1, with its top end pressed against the outside of the magnetic roller 3. A magnetic fiber bundle filter assembly 5 is horizontally arranged inside the secondary filtration tank 102, and an oil outlet pipe 6 is located at the bottom of the secondary filtration tank 102.

[0019] The magnetic roller 3 includes an inner cylinder 31 fixedly sleeved on the rotating shaft 2, and an outer cylinder 32 installed on the outside of the inner cylinder 31. Both the inner cylinder 31 and the outer cylinder 32 are made of non-magnetic material. Multiple magnets 33 are arranged circumferentially between the inner cylinder 31 and the outer cylinder 32. This structure can protect the magnets 33 from corrosion by cutting oil and damage from external impacts, extending the service life of the magnets 33, and also enable the magnetic roller 3 to form a stable magnetic field, ensuring effective adsorption of large metal debris.

[0020] Each of the magnets 33 displays magnetic poles of different polarities on its inner and outer circumferential surfaces, and the S and N poles are alternately arranged along the circumferential direction.

[0021] The outer surface of the outer cylinder 32 is provided with anti-slip texture; the anti-slip texture can increase the friction between the surface of the magnetic roller 3 and the metal chips, so that the metal chips are more firmly adsorbed on the surface of the magnetic roller 3, reducing the situation where the metal chips fall back into the cutting oil during the rotation of the magnetic roller 3.

[0022] The magnetic fiber bundle filter assembly 5 is inserted into the housing 1; this detachable connection method facilitates the replacement and cleaning of the magnetic fiber bundle filter assembly 5.

[0023] The magnetic fiber bundle filter assembly 5 includes a filter frame 51 and a magnetic fiber bundle filter 52 disposed inside the filter frame 51. The magnetic fiber bundle filter 52 is made of iron-nickel alloy soft magnetic material, and an excitation coil is embedded in the filter frame 51. By controlling the on and off of the excitation coil, the magnetism of the magnetic fiber bundle filter 52 can be controlled. When energized, the magnetic fiber bundle filter 52 generates magnetism and adsorbs fine metal debris; when de-energized, the magnetism disappears, and the adsorbed metal debris can automatically fall off for easy cleaning.

[0024] The magnetic fiber bundle filter 52 is formed by magnetic fiber bundles being arranged in an interlaced manner within the filter frame 51 to form a mesh filter structure.

[0025] The surface of the magnetic fiber bundle filter 52 is coated with an oil-resistant and corrosion-resistant coating.

[0026] An electric heating plate is embedded in the housing 1; the electric heating plate can heat the cutting oil and change its viscosity. When the cutting oil viscosity is high, heating can reduce its viscosity, making the cutting oil easier to flow, improving filtration efficiency, and enhancing the adaptability of the filtration device to cutting oils of different viscosities.

[0027] Working principle:

[0028] Cutting oil containing metal shavings enters the primary filter tank 101 of the filtration device. A drive motor rotates the shaft 2, causing the magnetic roller 3 to rotate accordingly. During rotation, the magnetic roller 3 uses the magnetic field generated by its internal magnet 33 to attract large metal shavings from the cutting oil. When the magnetic roller 3 rotates to the scraper 4, the scraper 4 scrapes off the metal shavings adsorbed on the surface of the magnetic roller 3, achieving separation of large metal shavings. The cutting oil after primary filtration flows into the secondary filter tank 102 through the connection between the primary filter tank 101 and the secondary filter tank 102. At this time, the excitation coil is energized, causing the magnetic fiber bundle filter screen 52 to become magnetic. The magnetic fiber bundle filter screen 52 attracts fine metal shavings from the cutting oil, further refining the cutting oil. The clean cutting oil after two stages of filtration flows out from the oil outlet pipe 6 at the bottom of the secondary filter tank 102. When it is necessary to clean the magnetic fiber bundle filter assembly 5, the power supply to the excitation coil is disconnected, the magnetic fiber bundle filter screen 52 loses its magnetism, and the adsorbed metal shavings automatically fall off, allowing for cleaning.

[0029] This invention achieves graded filtration of metal debris of different sizes by combining the magnetic roller 3 of the primary filtration tank 101 and the magnetic fiber bundle filtration assembly 5 of the secondary filtration tank 102. It can effectively remove large particles and fine metal debris from the cutting oil, significantly improve the cleanliness of the cutting oil, and meet the requirements of high-precision machining for the quality of cutting oil.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filtering device for metalworking cutting oil, characterized by: The device includes a housing (1), which contains a primary filter tank (101) and a secondary filter tank (102). The tops of the primary filter tank (101) and the secondary filter tank (102) are connected. A rotating shaft (2) is rotatably installed in the primary filter tank (101). A magnetic roller (3) is fitted on the rotating shaft (2). A drive motor for driving the rotating shaft (2) is installed on the outside of the housing (1). The magnetic roller (3) is located near the connection between the primary filter tank (101) and the secondary filter tank (102). A scraper (4) is fixedly and inclined inside the housing (1). The top of the scraper (4) is close to the outside of the magnetic roller (3). A magnetic fiber bundle filter assembly (5) is horizontally installed in the secondary filter tank (102). An oil outlet pipe (6) is installed at the bottom of the secondary filter tank (102).

2. The filtering device for metal working cutting oil according to claim 1, characterized by: The magnetic roller (3) includes an inner cylinder (31) fixedly sleeved on the rotating shaft (2), and an outer cylinder (32) is installed on the outside of the inner cylinder (31). Both the inner cylinder (31) and the outer cylinder (32) are made of non-magnetic material, and a plurality of magnets (33) are arranged circumferentially between the inner cylinder (31) and the outer cylinder (32).

3. The filtering device for metal working cutting oil according to claim 2, characterized in that: Each of the magnets (33) displays magnetic poles of different polarities on its inner and outer circumferential surfaces, and the S and N poles are alternately arranged along the circumferential direction.

4. The metalworking cutting oil filtration device as described in claim 2, characterized in that: The outer surface of the outer cylinder (32) is provided with anti-slip texture.

5. The filtering device for metal working cutting oil according to claim 1, wherein: The magnetic fiber bundle filter assembly (5) is inserted into the housing (1).

6. The filtering device for metal working cutting oil according to claim 1, wherein: The magnetic fiber bundle filter assembly (5) includes a filter frame (51) and a magnetic fiber bundle filter (52) disposed inside the filter frame (51). The magnetic fiber bundle filter (52) is made of iron-nickel alloy soft magnetic material, and an excitation coil is embedded in the filter frame (51).

7. The filtering device for metal working cutting oil according to claim 6, characterized in that: The surface of the magnetic fiber bundle filter (52) is coated with an oil-resistant and corrosion-resistant coating.

8. The metalworking cutting oil filtration device as described in claim 1, characterized in that: An electric heating plate is embedded in the housing (1).

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