A cooling liquid filtering device for a numerical control machine tool
By introducing a receiving plate and filter cloth into the coolant filtration device of CNC machine tools, combined with the filter cartridge and motor-driven rotary filtration, the problem of inconvenient cleaning inside the filter cartridge is solved, achieving efficient filtration of coolant and clean maintenance of the filter cartridge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI YIFENG TECH CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-08-04
AI Technical Summary
In existing CNC machine tool coolant filtration devices, the filter screen is installed inside the filter barrel, which makes it impossible to clean in a timely manner, affecting filtration efficiency and the cleanliness of the filter barrel.
A filtration device comprising a filter box, a receiving plate, a filter cartridge, and a filter cloth was designed. The receiving plate initially adsorbs iron filings, while the filter cartridge and filter cloth perform secondary interception. The filtration is accelerated by the rotation of a motor-driven shaft, and the receiving plate is easy to clean.
It achieves comprehensive filtration of coolant, improves filtration efficiency, and ensures the cleanliness of the filter box, making it easy for operators to clean regularly.
Smart Images

Figure CN224585491U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machine tool coolant treatment technology, and in particular to a CNC machine tool coolant filtration device. Background Technology
[0002] A CNC machine tool is an automated machine tool equipped with a program control system. CNC machine tools use coolant during operation. When machining parts using a CNC machine tool, coolant is usually sprayed in during the cutting process to absorb heat and reduce the heat of the cutting tool and the machined parts.
[0003] According to the coolant filtration device disclosed in announcement number CN206965275U, it includes a support, a filter barrel, a slag collection tank, a filter screen, and a motor. The filter barrel is equipped with a filter cover. The device filters metal shavings through the filter screen. During filtration, the coolant rotates with the filter barrel, effectively preventing the filter screen from being clogged by metal shavings. However, the aforementioned document uses the rotation of the filter barrel to filter the coolant, and the filter screen inside the barrel only performs a single filtration. This affects the filtration efficiency of the coolant. Furthermore, the filter screen is installed inside the filter barrel, making it impossible for the operator to clean it in a timely manner. This not only fails to ensure the cleanliness of the filter barrel but also affects the filtration efficiency of the coolant. Utility Model Content
[0004] The purpose of this invention is to solve the problem of incomplete coolant filtration in the prior art, and to propose a coolant filtration device for CNC machine tools.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A CNC machine tool coolant filtration device includes a filter box with an oil inlet and an oil outlet. A mounting base, a motor, and a delivery pipe are fixedly installed on the filter box. A receiving plate for receiving coolant is placed on the mounting base. The receiving plate has uniformly distributed magnetic plates that attract iron filings. The filter box has a clamping structure to hold the receiving plate in place. A rotating shaft is fixedly connected to the motor output end, and a filter cartridge for filtering coolant is fixedly installed on the rotating shaft. A second filter cartridge for filtering coolant is fixedly installed inside the first filter cartridge, and a filter cloth for filtering coolant is laid inside the second filter cartridge. Both the first and second filter cartridges have circumferentially distributed magnetic plates that attract iron filings.
[0007] Preferably, the mounting base has a concave structure, the receiving plate is horizontally positioned above the filter cartridge, and the receiving plate is provided with a handrail.
[0008] Preferably, the clamp structure includes a rotating rod rotatably mounted on the filter box, and an integrally connected support rod and sleeve are fixedly mounted on the rotating rod. A positioning rod extending into the receiving plate is slidably sleeved inside the sleeve, and a spring is welded between the positioning rod and the sleeve. A sliding rod connected to the positioning rod is slidably sleeved inside the sleeve.
[0009] Preferably, the rotating rod is vertically arranged on both sides of the filter box, the sleeve is an annular structure with an open bottom, the spring is vertically welded to the upper end of the positioning rod extending into the sleeve, the sliding rod is a T-shaped structure, and the receiving plate is provided with a positioning groove that cooperates with the positioning rod.
[0010] Preferably, the rotating shaft is vertically arranged, the first filter cylinder is a hollow ring structure with an open top, and the second filter cylinder is a hollow ring structure.
[0011] Preferably, the conveying pipe is horizontally positioned above the filter cloth, and an elastic rope extending to the filter cylinder is wound around the filter cloth.
[0012] Compared with the prior art, the present invention has the following advantages:
[0013] 1. This utility model provides a receiving plate inside the filter box. The magnetic plate on the receiving plate can initially adsorb iron filings in the coolant, and the filter cloth, filter cylinder 2, and filter cylinder 1 can further intercept the iron filings in the coolant, thereby achieving comprehensive filtration of the coolant.
[0014] 2. This utility model can dynamically filter coolant by rotating the shaft, which can accelerate the filtration efficiency of coolant. By removing the receiving plate and filter cloth from the filter box, the residual coolant in the filter box can be cleaned, thereby ensuring the cleanliness of the filter box. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a CNC machine tool coolant filtration device proposed in this utility model;
[0016] Figure 2 This is a cross-sectional view of a CNC machine tool coolant filtration device proposed in this utility model;
[0017] Figure 3 This is a side sectional view of a CNC machine tool coolant filtration device proposed in this utility model;
[0018] Figure 4 This is a cross-sectional view of the sleeve of a CNC machine tool coolant filtration device proposed in this utility model.
[0019] In the diagram: 1. Filter box; 2. Mounting base; 3. Motor; 4. Support plate; 5. Magnetic plate one; 6. Rotating shaft; 7. Filter cartridge one; 8. Filter cartridge two; 9. Filter cloth; 10. Magnetic plate two; 11. Conveying pipe; 12. Rotating rod; 13. Support rod; 14. Sleeve; 15. Positioning rod; 16. Spring; 17. Slide rod. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Reference Figures 1-4 A CNC machine tool coolant filtration device includes a filter box 1 with an oil inlet and an oil outlet. A mounting base 2, a motor 3, and a delivery pipe 11 are fixedly installed on the filter box 1. A receiving plate 4 for receiving coolant is placed on the mounting base 2. The receiving plate 4 is provided with evenly distributed magnetic plates 5 for adsorbing iron filings. The receiving plate 4 can initially intercept the falling coolant and buffer the flow rate of the coolant. The magnetic plates 5 can adsorb iron filings in the coolant.
[0022] The filter box 1 is equipped with a clamping structure to clamp the receiving plate 4.
[0023] The clamp structure includes a rotating rod 12 rotatably mounted on the filter box 1, and an integrally connected support rod 13 and sleeve 14 are fixedly mounted on the rotating rod 12. A positioning rod 15 extending into the receiving plate 4 is slidably sleeved inside the sleeve 14, and a spring 16 is welded between the positioning rod 15 and the sleeve 14. A sliding rod 17 connected to the positioning rod 15 is slidably sleeved inside the sleeve 14. To further explain, when it is necessary to clean the receiving plate 4, the rotating rod 12 is pulled to rotate, so that when the rotating rod 12 rotates, it drives the support rod 13 and sleeve 14 away from the receiving plate 4, so that the sleeve 14 can extend into the side wall of the filter box 1, ensuring the disassembly of the receiving plate 4.
[0024] The rotating rod 12 is vertically positioned on both sides of the filter box 1. The sleeve 14 is an annular structure with an open bottom. The spring 16 is vertically welded to the upper end of the positioning rod 15 extending into the sleeve 14. The sliding rod 17 is a T-shaped structure. The receiving plate 4 has a positioning groove that cooperates with the positioning rod 15. The sleeve 14 guides the positioning rod 15, and the spring 16 resets the positioning rod 15. When the sliding rod 17 is unloaded, the spring 16 can drive the positioning rod 15 back to its initial position.
[0025] The mounting base 2 supports the receiving plate 4 from the bottom position, and the positioning rod 15 can extend into the positioning groove inside the receiving plate 4 by moving down, thereby positioning the receiving plate 4, making the receiving plate 4 more convenient to install or disassemble later.
[0026] The output end of motor 3 is fixedly connected to a rotating shaft 6, and a filter cartridge 7 for filtering coolant is fixedly installed on the rotating shaft 6. The mounting base 2 has a concave structure, and the receiving plate 4 is horizontally set above the filter cartridge 7. The receiving plate 4 is equipped with a handrail. After motor 3 is powered on, it drives the rotating shaft 6 to rotate. When the rotating shaft 6 rotates, it drives the filter cartridge 7, the filter cartridge 8, and the filter cloth 9 to rotate. The centrifugal force generated by the rotation of the filter cartridge 7 and the filter cartridge 8 can filter the coolant and accelerate the filtration speed of the coolant.
[0027] A second filter cartridge 8 for filtering coolant is fixedly installed inside filter cartridge 7, and filter cloth 9 for filtering coolant is laid inside filter cartridge 8. The rotating shaft 6 is vertically set. Filter cartridge 7 is a hollow ring structure with an open top, and filter cartridge 8 is a hollow ring structure. According to the instruction manual... Figure 2 As shown, the two ends of the conveying pipe 11 correspond to the receiving plate 4 and the filter cloth 9 respectively. The conveying pipe 11 can collect the falling coolant and deliver the coolant to the filter cloth 9 through the conveying pipe 11, thereby ensuring the flow of coolant.
[0028] Filter cartridge 7 and filter cartridge 8 are equipped with circumferentially distributed magnetic plates 10 that adsorb iron filings. The conveying pipe 11 is horizontally positioned above the filter cloth 9. An elastic rope extending to filter cartridge 8 is wound around the filter cloth 9. The magnetic plate 5 on the receiving plate 4 can initially adsorb the coolant. Filter cartridge 7, filter cartridge 8, and filter cloth 9 can further intercept the iron filings in the coolant. The magnetic plate 10 can adsorb the iron filings in the coolant, thereby ensuring the filtration degree of the coolant. When the receiving plate 4 is removed from the filter box 1, the filter cloth 9 is removed by the elastic rope, allowing the operator to clean filter cartridge 7 and filter cartridge 8, thereby ensuring the cleanliness of the filter box 1.
[0029] The functional principle of this utility model can be explained through the following operation methods:
[0030] Coolant enters filter box 1 through the oil inlet;
[0031] The coolant first falls onto the receiving plate 4. The magnetic plate 5 on the receiving plate 4 can adsorb the iron filings in the coolant. Under the action of gravity, the coolant falls into the conveying pipe 11 and is then conveyed to the filter cloth 9 through the conveying pipe 11.
[0032] Filter cloth 9, filter cartridge 2 8, and filter cartridge 1 7 can intercept iron filings in the coolant, and magnetic plate 2 10 can adsorb the intercepted iron filings.
[0033] The output of motor 3 drives shaft 6 to rotate, and shaft 6 drives filter cartridge 1 7, filter cartridge 2 8, and filter cloth 9 to rotate, so that the coolant can be discharged quickly under the action of centrifugal force.
[0034] When it is necessary to clean the receiving plate 4;
[0035] Pulling out the slide rod 17 causes it to move the positioning rod 15 upward and disconnect it from the positioning groove. The spring 16 is then stressed, causing the rotating rod 12 to rotate. The rotating rod 12 moves the support rod 13 and the sleeve 14 away from the receiving plate 4. The receiving plate 4 is then lifted by the handrail, and the elastic rope is removed. This allows the filter cloth 9 to be removed from the second filter cartridge 8, enabling the operator to clean the receiving plate 4, the filter cloth 9, the first filter cartridge 7, and the second filter cartridge 8.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A cooling liquid filtering device for a numerical control machine tool, comprising a filtering box (1) provided with an oil inlet and an oil outlet, characterized in that, The filter box (1) is fixedly installed with a mounting base (2), a motor (3), and a conveying pipe (11). A receiving plate (4) for receiving coolant is placed on the mounting base (2). A magnetic plate (5) for adsorbing iron filings is evenly distributed on the receiving plate (4). A clamping structure for clamping the receiving plate (4) is provided on the filter box (1). A rotating shaft (6) is fixedly connected to the output end of the motor (3). A filter cylinder (7) for filtering coolant is fixedly installed on the rotating shaft (6). A filter cylinder (8) for filtering coolant is fixedly installed inside the filter cylinder (7). A filter cloth (9) for filtering coolant is laid inside the filter cylinder (8). A magnetic plate (10) for adsorbing iron filings is circumferentially distributed on the filter cylinder (7) and the filter cylinder (8).
2. A cooling liquid filtering device for a numerically controlled machine tool according to claim 1, characterized in that, The mounting base (2) has a concave structure, and the receiving plate (4) is horizontally positioned above the filter cartridge (7), with a handrail on the receiving plate (4).
3. The cooling liquid filtering device for CNC machine tools according to claim 1, characterized in that, The clamp structure includes a rotating rod (12) rotatably mounted on the filter box (1), and a support rod (13) and a sleeve (14) integrally connected are fixedly mounted on the rotating rod (12). A positioning rod (15) extending into the receiving plate (4) is slidably sleeved inside the sleeve (14), and a spring (16) is welded between the positioning rod (15) and the sleeve (14). A sliding rod (17) connected to the positioning rod (15) is slidably sleeved inside the sleeve (14).
4. A cooling liquid filtering device for a numerically controlled machine tool according to claim 3, characterized in that, The rotating rod (12) is vertically arranged on both sides of the filter box (1). The sleeve (14) is an annular structure with an open bottom. The spring (16) is vertically welded to the upper end of the positioning rod (15) extending into the sleeve (14). The sliding rod (17) is a T-shaped structure. The receiving plate (4) has a positioning groove that cooperates with the positioning rod (15).
5. The cooling liquid filtering device for CNC machine tools according to claim 1, characterized in that, The rotating shaft (6) is vertically arranged, the first filter cylinder (7) is a hollow ring structure with an open top, and the second filter cylinder (8) is a hollow ring structure.
6. The cooling liquid filtering device for CNC machine tools according to claim 1, characterized in that, The conveying pipe (11) is horizontally positioned above the filter cloth (9), and an elastic rope extending to the filter cylinder (8) is wound around the filter cloth (9).