Graded filtering device for grinding cooling liquid

By using a multi-stage filtration method combining a primary separator and a secondary separator, and utilizing filter screens and magnetic adsorption cylinders, the coolant is filtered in multiple stages, solving the problem of impurity accumulation in the coolant and improving the cleanliness and processing quality of the coolant.

CN224237085UActive Publication Date: 2026-05-15LUOYANG FANGLONG MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUOYANG FANGLONG MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD
Filing Date
2025-02-20
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Metal particles in existing grinding coolants cause impurities to accumulate, affecting the service life of the coolant and the processing quality.

Method used

The system combines a primary separator and a secondary separator, using a filter screen and a magnetic adsorption cylinder for graded filtration. After initially filtering out large impurities, it utilizes centrifugal force and magnets to adsorb fine impurities, thus achieving multi-stage filtration.

Benefits of technology

It significantly improves coolant cleanliness to meet the requirements of high-precision grinding processes. The device has a compact structure that is easy to install and maintain, and the filter components are easy to clean and replace, ensuring continuous and efficient operation.

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Abstract

The utility model relates to the technical field of grinding cooling liquid, in particular to a grinding cooling liquid graded filtering device which comprises a first-stage separator and a second-stage separator, the first-stage separator is communicated with an inlet pipeline and comprises a first-stage separation cylinder and a filter screen in the first-stage separation cylinder, and the second-stage separator comprises a second-stage separation cylinder; the second-stage separation barrel is communicated with the first-stage separation barrel, a magnet adsorption barrel is mounted on the inner wall of the second-stage separation barrel, and the bottom of the second-stage separation barrel is communicated with a discharge pipeline. According to the cooling liquid filtering device, after cooling liquid containing impurities is input into the inlet pipeline, the cooling liquid is primarily filtered through the filter screen in the first-stage separation barrel and then flows into the second-stage separation barrel to be secondarily filtered, and fine impurities in the cooling liquid are adsorbed through the magnet adsorption barrel, so that filtering of the cooling liquid is achieved.
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Description

Technical Field

[0001] This application relates to the field of grinding coolant technology, and in particular to a grinding coolant grading filtration device. Background Technology

[0002] Grinding coolant is a special liquid or semi-solid material used in metal grinding, milling, or other related metal processing. It possesses multiple functions to meet various needs during the processing. Its main functions include: cooling, effectively reducing the high temperatures generated by friction between the workpiece and grinding wheel during processing, preventing deformation or damage due to overheating; lubrication, reducing friction and wear, improving processing efficiency and accuracy, while protecting tools and workpieces from damage; cleaning, promptly removing chips and dust generated during processing, keeping the work area clean, and ensuring smooth processing; and rust prevention, preventing metal parts from rusting during processing and storage, extending their service life.

[0003] In the prior art, metal particles are carried into the coolant during grinding, resulting in impurities in the coolant and a shorter service life. Therefore, this application proposes a grinding coolant grading and filtration device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide a grinding coolant grading and filtration device to solve the technical problems in the background art.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: a grinding coolant grading filtration device, comprising a primary separator and a secondary separator, wherein the primary separator is connected to an inlet pipe, the primary separator includes a primary separation cylinder and a filter screen inside the primary separation cylinder, the secondary separator includes a secondary separation cylinder, the secondary separation cylinder is connected to the primary separation cylinder, a magnetic adsorption cylinder is installed on the inner wall of the secondary separation cylinder, and a discharge pipe is connected to the bottom of the secondary separation cylinder.

[0006] By adopting the above technical solution, in this application, after the coolant containing impurities is introduced into the inlet pipe, it is initially filtered by the filter screen in the primary separation cylinder, and then flows into the secondary separation cylinder for secondary filtration. Fine impurities in the coolant are adsorbed by the magnetic adsorption cylinder, thereby achieving the filtration of the coolant.

[0007] Furthermore, the primary separation cylinder has multiple sets of filter screens, and the pore size of each set of filter screens is different.

[0008] By adopting the above technical solution, the filter screen aperture in the separation cylinder of this application decreases from top to bottom, thereby ensuring the filtration effect.

[0009] Furthermore, the filter screen and the primary separation cylinder are inserted together, and a sealing gasket is fixedly provided around the filter screen.

[0010] By adopting the above technical solution, in order to facilitate the replacement and cleaning of the filter screen, this application inserts the filter screen and the first-stage separator into one end, and at the same time sets the sealing gasket to prevent coolant from flowing out from the insertion point.

[0011] Furthermore, the sealing gasket is made of flexible rubber.

[0012] Furthermore, a power-assisted handle is fixedly installed on one side of the filter screen.

[0013] By adopting the above technical solution, the design of the assist handle can provide a point of leverage for pulling the filter screen.

[0014] Furthermore, a rotating centrifugal device is installed inside the secondary separation cylinder.

[0015] Furthermore, the rotating centrifuge device includes a cross-shaped support at the bottom of the magnetic adsorption cylinder, a rotating shaft extending from the bottom between the crosses, the rotating shaft being rotatably connected to the bottom of the secondary separation cylinder, a drive motor being fixedly installed at the bottom of the secondary separation cylinder, and the output end of the drive motor being fixedly connected to the rotating shaft.

[0016] By adopting the above technical solution and setting up a centrifugal device, after the coolant flows into the secondary separation cylinder, the drive motor drives the rotating shaft to rotate the cross support, thereby driving the magnetic adsorption cylinder to rotate, so that the coolant rotates together. Through centrifugal force, small impurities in the coolant move to the edge, making them easier to be adsorbed by the magnetic adsorption cylinder.

[0017] Furthermore, a lock-up valve is installed on the discharge pipe.

[0018] By adopting the above technical solution, the lock-up valve is closed during filtration, and the lock-up valve is opened after filtration is completed to allow the filtered coolant to be discharged.

[0019] In summary, this application offers the following beneficial technical effects: The device performs preliminary filtration of the coolant through a filter screen in the primary separation cylinder, effectively removing larger impurity particles. Subsequently, the coolant flows into the secondary separation cylinder, where finer impurities are further adsorbed by a magnetic adsorption cylinder, achieving a finer filtration effect. This staged filtration method can significantly improve the cleanliness of the coolant, meeting the requirements of high-precision grinding processes. The device compactly integrates the primary and secondary separators, achieving smooth coolant flow through connecting pipes. This compact structural design not only saves space but also facilitates installation and maintenance. The filter screen and magnetic adsorption cylinder, as key filtration components, are designed and installed in a way that facilitates disassembly and replacement. This allows users to easily perform regular cleaning and maintenance of the filter components, ensuring the continuous and efficient operation of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in the embodiment;

[0021] Figure 2 This is a schematic diagram of the filter structure in the embodiment;

[0022] Figure 3 This is a schematic diagram of the internal structure of the secondary separation cylinder in the embodiment.

[0023] Reference numerals: 1. Primary separator; 10. Inlet pipe; 11. Filter screen; 12. Power handle; 2. Secondary separator; 20. Discharge pipe; 21. Magnetic adsorption cylinder; 22. Cross support; 23. Drive motor; 24. Lock-up valve. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] Example, refer to Figure 1 - Figure 3 A grinding coolant grading and filtration device includes a primary separator and a secondary separator. The primary separator is connected to an inlet pipe 10 and includes a primary separation cylinder 1 and a filter screen 11 inside the primary separation cylinder 1. The secondary separator includes a secondary separation cylinder 2, which is connected to the primary separation cylinder 1. A magnetic adsorption cylinder 21 is installed on the inner wall of the secondary separation cylinder 2, and a discharge pipe 20 is connected to the bottom of the secondary separation cylinder 2. In this application, after the coolant containing impurities is input into the inlet pipe 10, it undergoes preliminary filtration through the filter screen 11 in the primary separation cylinder 1. Then, it flows into the secondary separation cylinder 2 for secondary filtration, where the magnetic adsorption cylinder 21 adsorbs fine impurities in the coolant, thereby achieving the filtration of the coolant.

[0026] In this embodiment, the primary separation cylinder 1 has multiple sets of filter screens 11, and the pore size of each set of filter screens 11 is different. In this application, the pore size of the filter screens 11 in the separation cylinder decreases from top to bottom, thereby ensuring the filtration effect.

[0027] In this embodiment, the filter screen 11 and the primary separation cylinder 1 are inserted together, and a sealing gasket is fixedly provided around the filter screen 11. In order to facilitate the replacement and cleaning of the filter screen 11, the filter screen 11 and the primary separation cylinder 1 are inserted together in this application, and the sealing gasket is provided to prevent coolant from flowing out from the insertion point.

[0028] In this embodiment, the sealing gasket is made of flexible rubber.

[0029] In this embodiment, a power handle 12 is fixedly provided on one side of the filter screen 11. The power handle 12 provides a point of leverage for pulling the filter screen 11.

[0030] In this embodiment, a rotating centrifugal device is installed inside the secondary separation cylinder 2. The rotating centrifugal device includes a cross support 22 at the bottom of the magnetic adsorption cylinder 21. A rotating shaft extends from the bottom of the cross support 22 and is rotatably connected to the bottom of the secondary separation cylinder 2. A drive motor 23 is fixedly installed at the bottom of the secondary separation cylinder 2, and the output end of the drive motor 23 is fixedly connected to the rotating shaft. With the centrifugal device, after the coolant flows into the secondary separation cylinder 2, the drive motor 23 drives the rotating shaft to rotate the cross support 22, thereby causing the magnetic adsorption cylinder 21 to rotate, making the coolant rotate as well. Through centrifugal force, small impurities in the coolant move to the edge, making them easier to be adsorbed by the magnetic adsorption cylinder 21.

[0031] In this embodiment, a lock-up valve 24 is installed on the discharge pipe 20. The lock-up valve 24 is closed during filtration, and opened after filtration is complete to allow the filtered coolant to drain.

[0032] Specific usage process: The process of using this grinding coolant grading filtration device includes preparation, filtration startup, secondary filtration and centrifugal separation, monitoring and adjustment, filtration termination and discharge, and maintenance. First, ensure that the primary and secondary separators and their internal components are correctly installed and in good working order. Check that the inlet pipe 10, outlet pipe 20, and their connections are tight and leak-free, and ensure that the drive motor 23 is powered on and in standby mode. Then, open the valve of the inlet pipe 10 to allow the coolant containing impurities to enter the primary separator. After entering the primary separator 1, the coolant undergoes preliminary filtration through multiple sets of filter screens 11. The pore size of these filter screens 11 decreases progressively from top to bottom to remove larger impurity particles step by step. The pre-filtered coolant then flows into the secondary separator 2, where it comes into contact with the magnetic adsorption cylinder 21. At this time, the drive motor 23 starts, rotating the cross support 22 and the magnetic adsorption cylinder 21 via the rotating shaft. The centrifugal force generated by the rotation causes the fine impurities in the coolant to move towards the edge, making them easier to be adsorbed by the magnetic adsorption cylinder 21. During the filtration process, operators should regularly check the filter screen 11 and the magnetic adsorption cylinder 21 for blockage. If the filter screen 11 is severely blocked or the magnetic adsorption cylinder 21 has excessive impurities, the machine should be stopped immediately for cleaning or replacement. Operators should also monitor the flow and pressure changes of the coolant to ensure effective filtration. After the coolant filtration is complete, close the valve on the inlet pipe 10 and open the check valve 24 on the outlet pipe 20 to allow the filtered coolant to drain through the outlet pipe 20. After drainage, close the check valve 24 and disconnect the power to the drive motor 23. Finally, clean or replace the filter screen 11 and the magnetic adsorption cylinder 21, inspect and maintain the internal components of the primary and secondary separators, and record detailed information about this filtration process for future analysis and improvement. Through these steps, this grinding coolant staged filtration device can be effectively used to filter and purify the coolant, improving the quality and efficiency of the grinding process.

[0033] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grinding coolant grading and filtration device, characterized in that, It includes a primary separator and a secondary separator. The primary separator is connected to an inlet pipe (10). The primary separator includes a primary separation cylinder (1) and a filter screen (11) inside the primary separation cylinder (1). The secondary separator includes a secondary separation cylinder (2). The secondary separation cylinder (2) is connected to the primary separation cylinder (1). A magnetic adsorption cylinder (21) is installed on the inner wall of the secondary separation cylinder (2). The bottom of the secondary separation cylinder (2) is connected to a discharge pipe (20).

2. The grinding coolant grading and filtration device according to claim 1, characterized in that, The filter screen (11) in the primary separation cylinder (1) is provided in multiple sets, and the pore size of the filter screen (11) in each set is different.

3. The grinding coolant grading and filtration device according to claim 2, characterized in that, The filter screen (11) and the primary separation cylinder (1) are inserted together, and a sealing gasket is fixedly provided around the filter screen (11).

4. The grinding coolant grading and filtration device according to claim 3, characterized in that, The sealing gasket is made of flexible rubber.

5. The grinding coolant grading and filtration device according to claim 3, characterized in that, A power handle (12) is fixedly installed on one side of the filter screen (11).

6. The grinding coolant grading and filtration device according to claim 1, characterized in that, The secondary separation cylinder (2) is equipped with a rotating centrifugal device inside.

7. The grinding coolant grading and filtration device according to claim 6, characterized in that, The rotating centrifuge device includes a cross bracket (22) at the bottom of the magnetic adsorption cylinder (21), a rotating shaft extending from the bottom of the cross bracket (22), the rotating shaft being rotatably connected to the bottom of the secondary separation cylinder (2), a drive motor (23) being fixedly installed at the bottom of the secondary separation cylinder (2), and the output end of the drive motor (23) being fixedly connected to the rotating shaft.

8. The grinding coolant grading and filtration device according to claim 7, characterized in that, A lock-up valve (24) is installed on the discharge pipe (20).