Machine tool cutting fluid self-cleaning circulating filtration system

Abstract

The utility model provides a machine tool cutting fluid self-cleaning circulating filtration system which comprises a fine filtration water tank, a lifting pump, a large-flow vortex separator, a small-flow vortex separator, a bag type filter, a liquid level meter, a single-filter-element backwashing filter, an oil-water separator, an anti-deposition nozzle, a leakage basket, a control box and a coarse filtration water tank, the coarse filtering water tank is connected with the lifting pump, the lifting pump is respectively connected with the large-flow vortex separator and the small-flow vortex separator, the large-flow vortex separator is respectively connected with the single-filter-element backwashing filter and the anti-deposition nozzle, the large-flow vortex separator is connected with the anti-deposition nozzle through a pipeline, and the small-flow vortex separator is connected with the anti-deposition nozzle through a pipeline. Drain outlets of the large-flow vortex separator and the small-flow vortex separator are connected with a bag type filter, and a control box is arranged at one end of the fine filtering water tank. According to the system, the machining quality of the workpiece is improved, and the machining precision and the performance of the cutting fluid are improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a machine tool cutting fluid self-cleaning circulation filtration system for collecting cutting fluid impurities and finely filtering the cutting fluid in a CNC machine tool cooling circulation filtration system. Background Technology

[0002] With the rapid development of China's manufacturing industry, CNC machine tools in China have shown a trend of rapid development. To compete with the world's leading machine tool manufacturers in the future, Chinese machine tool companies are focusing on improving the performance of key machine tool components. At the same time, high-quality, efficient, low-consumption, and pollution-free green advanced manufacturing technologies are receiving increasing attention. This places higher demands on the collection of chips and the rational use and subsequent treatment and reuse of cutting fluids in CNC machining. To reduce the impact of waste chips and waste fluids on the ecological environment, it is essential to improve the green level of CNC machine tool waste chip and waste fluid treatment. During machine tool processing, large chips are discharged through the chip conveyor, while small chips and sludge enter the coarse filter tank. Over time, sediment and impurities accumulate in the coarse filter tank. If not cleaned in time, this will affect the machining accuracy of the workpiece and the performance of the cutting fluid. Currently, the tank is usually cleaned manually, increasing labor costs and time, thus affecting processing efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a self-cleaning circulating filtration system for machine tool cutting fluid, which eliminates the need for manual cleaning, ensures low impurity content at the bottom of the water tank, reduces labor and material costs, and improves workpiece processing quality and efficiency.

[0004] This utility model provides a technical solution for a self-cleaning circulating filtration system for machine tool cutting fluid. The main technical content is as follows: A self-cleaning circulating filtration system for machine tool cutting fluid includes a fine filtration tank, a booster pump, a high-flow vortex separator, a low-flow vortex separator, a bag filter, a level gauge, a single-element backwash filter, an oil-water separator, an anti-deposition nozzle, a strainer, and a control box. The coarse filtration tank is connected to the booster pump, which is connected to both the high-flow and low-flow vortex separators. The high-flow vortex separator is connected to both the single-element backwash filter and the anti-deposition nozzle. The high-flow vortex separator and the anti-deposition nozzle are connected by pipelines. The drain ports of both the high-flow and low-flow vortex separators are connected to the bag filter. A control box is located at one end of the fine filtration tank.

[0005] The anti-deposition nozzle is located at the end of the coarse filtration tank, near the bottom of the tank.

[0006] The lower part of the single-element backwash filter is equipped with a strainer and a sedimentation tank.

[0007] Both the fine filtration tank and the coarse filtration tank are equipped with level gauges. An oil-water separator is also installed on the right side of the coarse filtration tank. The power supplies for the booster pump, bag filter, high-flow vortex separator, low-flow vortex separator, level gauge, single-element backwash filter, and oil-water separator are all connected to the control box.

[0008] The number of anti-deposition nozzles is 5-7.

[0009] The filter element of the single-element backwash filter is made of stainless steel wedge-shaped wire wound together.

[0010] The fine filtration water tank is also equipped with a high-pressure pump and a limit valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. No manual cleaning of the water tank is required; filter cleaning is quick and labor and consumable costs are low.

[0013] 2. Backwash filtration, no consumables, maintenance-free, filtration accuracy of 30 microns;

[0014] 3. Reduce processing energy consumption and extend service life;

[0015] 4. Lower requirements for pre-filtration and suitable for processing a variety of materials;

[0016] 5. Standardized and modular design, with the technical advantages of compact structure and small size;

[0017] 6. Built-in wastewater recovery device for more thorough filtration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a machine tool cutting fluid self-cleaning circulation filtration system according to the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Fine filtration tank; 2. Booster pump; 3. High-flow vortex separator; 4. Low-flow vortex separator; 5. Bag filter; 6. Level gauge; 7. Single-cartridge backwash filter; 8. Oil-water separator; 9. Anti-deposition nozzle; 10. Leakage basket; 11. Control box; 12. Coarse filtration tank; 13. High-pressure pump; 14. Limit valve. Detailed Implementation

[0021] The technical content of this machine tool cutting fluid self-cleaning circulation filtration system will be described in detail below with reference to an embodiment shown in the accompanying drawings, and its application effects will be explained.

[0022] This is a self-cleaning circulating filtration system for machine tool cutting fluid, such as Figure 1 As shown, its components include a fine filtration tank 1, a booster pump 2, a high-flow vortex separator 3, a low-flow vortex separator 4, a bag filter 5, a level gauge 6, a single-element backwash filter 7, an oil-water separator 8, an anti-deposition nozzle 9, a strainer basket 10, a control box 11, a coarse filtration tank 12, a high-pressure pump 13, and a limit valve 14. The coarse filtration tank 12 is connected to the booster pump 2, which is connected to both the high-flow vortex separator 3 and the low-flow vortex separator 4. The high-flow vortex separator 3 is connected to both the single-element backwash filter 7 and the anti-deposition nozzle 9. The high-flow vortex separator 3 and the anti-deposition nozzle 9 are connected by pipelines. The drain ports of both the high-flow vortex separator 3 and the low-flow vortex separator 4 are connected to the bag filter 5. Impurities from the drain ports of both the high-flow vortex separator 3 and the low-flow vortex separator 4 are recovered through the bag filter 5. The example uses a bag filter, which is easy to replace, saves labor time, and has lower bag procurement costs, thus saving production costs. The filtered cutting fluid returns to the coarse filtration tank 12 to prevent impurities from returning to the coarse filtration tank 12 and causing a vicious cycle. A control box 11 is set at one end of the fine filtration tank 1. The power supply of the lift pump 2, bag filter 5, high-flow vortex separator 3, low-flow vortex separator 4, level gauge 6, single-element backwash filter 7, and oil-water separator 8 are all connected to the control box 11. The control box 11 achieves fully automatic control, eliminating the need for personnel maintenance, reducing maintenance costs, and at the same time, the control logic is simpler and the probability of misoperation is low.

[0023] The anti-deposition nozzle 9 is located at the end of the coarse filter water tank 12, near the bottom of the coarse filter water tank. The number of anti-deposition nozzles 9 is 5-7. In this embodiment, the number of anti-deposition nozzles is 5. The appropriate number of nozzles can be determined according to the size of the water tank. The nozzles 9 are used to blow the bottom surface of the water tank, eliminating the need for manual cleaning, shortening the working time, and improving the processing efficiency. By setting the nozzles 9 to blow impurities to the suction port of the booster pump 2, the impurity concentration in the coarse filter water tank is reduced while processing is being carried out, ensuring the internal blowing and recycling of the coarse filter water tank, reducing the impurity content at the bottom of the coarse filter water tank, and reducing labor and consumable costs.

[0024] The single-element backwash filter 7 utilizes compressed air for backwash regeneration, achieving a better backwashing effect. During backwashing, the system's water supply is closed, and compressed air drives the cutting fluid for self-regeneration, reducing energy consumption. Since compressed air is only consumed during backwashing, air consumption is low, resulting in fewer moving parts and consequently fewer vulnerable components. Filter element regeneration does not require coolant pressure, further reducing pump power consumption and extending the lifespan of the high-pressure pump. The system is compatible with high-pressure pump installation dimensions, allowing selection of the most suitable pump type, including plunger pumps, diaphragm pumps, centrifugal pumps, gear pumps, and screw pumps. Different types of wastewater recovery devices have identical installation dimensions, and the housing size is standardized. Furthermore, standardized mechanical and electrical interfaces facilitate easier installation and disassembly. The built-in single-element backwash filter 7 backwash regeneration control program reduces... Electrical interaction with machine tools reduces communication costs; when selecting this system, a space can be reserved for the installation of a chiller, which can be added at any time according to changes in the processing technology, reducing the impact of cutting fluid temperature changes on processing accuracy, and has strong compatibility; the single-element backwash filter 7 is equipped with a sieve basket 10 and a sedimentation tank below the sieve basket 10. Through such a built-in sludge recovery device, when the backwash filter 7 is backwashed and regenerated, the sludge enters the built-in sludge collection device, is filtered, enters the sedimentation tank, and then flows back to the coarse filtration tank 12. Slightly larger impurities are collected in the collection sieve basket 10; smaller impurities enter the sedimentation tank and settle at the bottom of the sedimentation tank, which can be collected and cleaned in a timely manner; different types of collection devices can be selected according to the processing materials, such as: metal mesh sieve basket, magnetic separator or micro paper tape machine, etc.

[0025] The coarse filter water tank 12 is equipped with an oil-water separator 8 on the right side of its inlet. This separator is used to treat the sludge on the surface of the water tank and the oil in the cutting fluid. After separating the oil, the cutting fluid is filtered to ensure its cleanliness.

[0026] During operation, the booster pump 2 connected to the machine tool coarse filter water tank 12 supplies cutting fluid to the high-flow-rate vortex separator 3 and the low-flow-rate vortex separator 4. The outlet of the low-flow-rate vortex separator 4 is directly connected to the tool flushing pipeline interface, improving the accuracy of pre-filtration before tool flushing and reducing the clogging and replacement frequency of the tool flushing filter element on the machine tool side. The outlet of the high-flow-rate vortex separator 3 splits into two paths: one to the inlet of the single-element backwash filter 7, and the other to the inlet of the anti-deposition nozzle 9 pipeline in the water tank. The single-element backwash filter 7 connected to the high-flow-rate vortex separator 3 then backwashes... During operation, the wastewater enters the built-in wastewater collection device frame 10, is filtered, and then flows into the sedimentation tank before returning to the coarse filtration tank. The single-element backwash filter 7 uses a filter element made of stainless steel wedge-shaped wire, which is high-strength and wear-resistant. This two-way backwashing process serves as both circulating and secondary filtration, providing clean cutting fluid to the machine tool. The clean cutting fluid, after filtration, is pumped by a high-pressure pump 13 located on the fine filtration tank to the tool internal cooling device, improving the workpiece's machining quality and precision. The fine filtration tank 1 is also equipped with a pressure limiting valve 14. Figure 1 The left side section is used to open the pressure relief valve to its maximum before the high-pressure pump 13 is started. After the high-pressure pump 13 is started, the pressure relief valve 14 knob is adjusted. After observing the pipeline pressure gauge to the set pressure value, the pressure relief valve knob is locked. The anti-deposition nozzle 9 purges and filters simultaneously, which improves the performance of the cutting fluid, thereby improving the workpiece processing quality and increasing the processing accuracy.

Claims

1. A self-cleaning circulating filtration system for machine tool cutting fluid, characterized in that, The system includes a fine filtration tank (1), a booster pump (2), a high-flow vortex separator (3), a low-flow vortex separator (4), a bag filter (5), a level gauge (6), a single-element backwash filter (7), an oil-water separator (8), an anti-deposition nozzle (9), a strainer basket (10), a control box (11), and a coarse filtration tank (12). The coarse filtration tank (12) is connected to the booster pump (2). The booster pump (2) is connected to the high-flow vortex separator (3) and the low-flow vortex separator (4). The high-flow vortex separator (3) is connected to the single-element backwash filter (7) and the anti-deposition nozzle (9). The high-flow vortex separator (3) and the anti-deposition nozzle (9) are connected by pipelines. The drain outlet of the low-flow vortex separator (4) is connected to the bag filter (5). The fine filtration tank (1) is equipped with a control box (11) at one end.

2. The machine tool cutting fluid self-cleaning circulating filtration system according to claim 1, characterized in that, The anti-deposition nozzle (9) is located at the end of the coarse filter tank (12), near the bottom of the tank.

3. A machine tool cutting fluid self-cleaning circulating filtration system according to claim 1 or 2, characterized in that, A sieve (10) is provided at the bottom of the single-cartridge backwash filter (7).

4. The machine tool cutting fluid self-cleaning circulating filtration system according to claim 3, characterized in that, Both the fine filtration tank (1) and the coarse filtration tank (12) are equipped with level gauges (6), and an oil-water separator (8) is installed on the right side of the coarse filtration tank (12).

5. The machine tool cutting fluid self-cleaning circulating filtration system according to claim 1, characterized in that, The power supplies for the booster pump (2), bag filter (5), high-flow vortex separator (3), low-flow vortex separator (4), level gauge (6), single-element backwash filter (7), and oil-water separator (8) are all connected to the control box (11).

6. The machine tool cutting fluid self-cleaning circulating filtration system according to claim 1, characterized in that, The number of anti-deposition nozzles is 5-7.

7. The machine tool cutting fluid self-cleaning circulating filtration system according to claim 1, characterized in that, The filter element of the single-element backwash filter (7) is made of stainless steel metal wedge wire wound together.

8. A machine tool cutting fluid self-cleaning circulating filtration system according to claim 1, characterized in that, The fine filtration water tank (1) is also equipped with a high-pressure pump (13) and a limit valve (14).

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