Centralized processing system for cutting fluid

Abstract

A centralized processing system for cutting fluid comprises a machine tool application end, a single-machine fluid tank, a fluid return pipeline, a fluid supply pipeline, a master station fluid tank, a master station electric cabinet, a sub-electric cabinet and a communication line. Cutting fluid of multiple machine tools in a workshop can be concentrated together for diversified and deep treatment, the cutting fluid treatment quality is greatly improved, and the machining quality of the machine tools is guaranteed; the system can automatically carry out liquid supplementing and liquid changing, the maintenance frequency of workers is reduced, and the downtime is shortened; the cutting fluid can be kept flowing in holidays, the cutting fluid is prevented from going bad due to long-term standing, the service life of the cutting fluid is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting fluid purification, and in particular relates to a centralized processing system for cutting fluid. Background Art

[0002] During the machining process, as the cutting fluid is circulated, the temperature, concentration, cleanliness, acidity and alkalinity of the cutting fluid will change, affecting the machining accuracy of the machine tool. Therefore, maintaining the quality of the cutting fluid is crucial to machine tool machining. In order to control the quality of the cutting fluid and improve the recycling rate of the cutting fluid, each machine tool is usually equipped with a chip removal and filtration device (one machine, one pump and one fluid tank) to treat the cutting fluid. However, this model is suitable for occasions with a small number of machine tools and a slow production cycle. It has many limitations to the current high-speed development of the machining industry, mainly: The cutting fluid needs to be added or replaced frequently, which results in heavy workload for maintenance personnel and high maintenance costs; When there are many machine tools, it is easy for untimely maintenance to affect the normal processing of the machine tools and even affect the processing quality. If the circulation, filtration and purification of cutting fluid are not sufficient, the cutting fluid will easily deteriorate, resulting in high processing costs. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a centralized cutting fluid processing system, which can concentrate the cutting fluid of multiple machine tools in a workshop for diversified and in-depth processing, greatly improving the quality of the cutting fluid and reducing labor maintenance costs. It can also maintain the flow of the cutting fluid during holidays and prevent the cutting fluid from deteriorating due to long-term stagnation, thereby extending the life of the cutting fluid.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A centralized processing system for cutting fluid comprises a machine tool application end, a single machine fluid tank, a return fluid pipeline, a fluid supply pipeline, a main station fluid tank, a main station electric cabinet, a sub-electric cabinet and a communication line; the main station fluid tank can automatically transport clean cutting fluid to the single machine fluid tank through the fluid supply pipeline; the single machine fluid tank is placed together with the machine tool application end; the single machine fluid tank can automatically supply fluid to the machine tool application end; and dirty fluid used by the machine tool application end will flow to the single machine fluid tank; the single machine fluid tank can automatically transport the dirty fluid back to the main station fluid tank through the return fluid pipeline; each machine tool is equipped with a sub-electric cabinet; the sub-electric cabinet integrates the electrical components of the machine tool application end and the single machine fluid tank; the main station fluid tank is placed together with the main station electric cabinet; network communication is carried out between the sub-electric cabinets and between the sub-electric cabinets and the main station electric cabinet through communication lines.

[0005] The main station liquid tank includes the main station clean liquid tank, the main station dirty liquid tank, the liquid supply pump, the self-circulation valve, the liquid supply valve, the self-circulation pipeline, the circulation pump, the filtering equipment, the ozone generator, and the liquid level sensor. The liquid supply pump is placed on the main station clean liquid tank. The outlet of the liquid supply pump is divided into two paths, one connected to the liquid supply valve and the other connected to the self-circulation valve. The liquid supply valve is connected to the liquid supply pipeline, and the self-circulation valve is connected to the self-circulation pipeline. The circulation pump is placed on the main station dirty liquid tank, and the outlet of the circulation pump is connected to the filtering equipment to transport the dirty liquid to the filtering equipment. The outlet of the filtering equipment is connected to the clean liquid tank. The ozone generator is placed on the clean liquid tank. There is a liquid level sensor on the main station clean liquid tank and the main station dirty liquid tank respectively. The single-machine liquid tank includes a single-machine liquid tank clean liquid area, a single-machine liquid tank dirty liquid area, a filter, a return liquid pump, a machine tool liquid supply pump, a liquid replenishing valve, and a liquid level sensor. The dirty liquid used by the machine tool application end flows to the single-machine liquid tank dirty liquid area. The single-machine liquid tank dirty liquid area and the single-machine liquid tank clean liquid area are separated by a filter. The return liquid pump is connected to the return liquid pipeline and is responsible for pumping the cutting fluid back to the main station dirty liquid tank. The machine tool liquid supply pump is responsible for supplying liquid to the machine tool application end, and the liquid replenishing valve is placed in the clean liquid area. The main station liquid tank and the single machine liquid tank are connected by a pipeline, and the pipeline is composed of a return liquid pipeline, a liquid supply pipeline, a safety valve (25), a pipeline filter, etc.

[0006] Furthermore, the liquid supply pipeline connects the main station clean liquid tank and the single-machine liquid tank clean liquid area together, and automatic liquid replenishment can be achieved by controlling the liquid supply pump and the liquid replenishment valve.

[0007] Furthermore, the liquid return pipeline connects the main station dirty liquid tank and the single machine liquid tank dirty liquid area together, and automatic liquid replacement can be achieved by controlling the liquid return pump and the liquid replenishment valve.

[0008] Furthermore, the dirty liquid tank of the main station can supply liquid through a circulating pump, and pass through a filtering device to achieve automatic circulation and filtration of the cutting fluid with the clean liquid tank of the main station.

[0009] Furthermore, there are two liquid supply pumps, which operate intermittently and serve as backup for each other.

[0010] Furthermore, the end of the liquid supply pipeline is connected to the end of the liquid return pipeline through a safety valve.

[0011] Furthermore, the liquid supply pipeline has a slope of 0.2%-0.5%, and the liquid return pipeline has a slope of 0.5%-0.8%, so as to fully utilize gravity, and a pipeline filter (26) is installed between the liquid return pipeline (3) and the liquid return pump (22) to further prevent pipeline blockage.

[0012] A filtering method for a centralized cutting fluid treatment system comprises the following steps: a liquid supply pump of the system delivers clean cutting fluid from a main station liquid tank to a clean liquid area of ​​a single machine liquid tank through a liquid supply pipeline, and a machine tool liquid supply pump delivers the clean cutting fluid to a machine tool application end for use; The used dirty liquid flows to the dirty liquid area of ​​the single machine liquid tank, and after primary filtration such as the filter screen, it is transported back to the dirty liquid area of ​​the single machine liquid tank through the return liquid pipeline by the return liquid pump; The dirty liquid in the dirty liquid area of ​​the single-machine liquid tank is transported by a circulation pump, and after further filtration through the filtering equipment, it is transported to the clean liquid area of ​​the single-machine liquid tank. After being sterilized by the ozone generator, it is transported to the clean liquid area of ​​the single-machine liquid tank again by the liquid supply pump for use at the machine tool application end.

[0013] Compared with the prior art, the present invention has the following technical effects: The present invention realizes the centralized and automatic management of cutting fluids of multiple machine tools, improves the automation level of the workshop, and reduces maintenance costs; The present invention can purify cutting fluid repeatedly and deeply, has various purification methods, and has good expandability, which can greatly improve the quality of cutting fluid and extend the service life of cutting fluid; The present invention has two liquid supply pumps, and the two pumps operate alternately and intermittently, which can prevent the system from operating normally after one pump is damaged, and can also prevent the pumps from being damaged due to long-term static operation. The system of the present invention includes many safety and foolproof measures to ensure the reliable and stable operation of the system; The present invention has three solutions for liquid supply and liquid return: one is upper supply and upper discharge; the second is upper supply and lower discharge; the third is lower supply and lower discharge. The pipeline is designed according to the factory conditions and the nature of the chips to enhance the risk resistance of the entire system; The sub-electrical cabinet in the system of the present invention integrates the components on the machine tool application end and the single-machine liquid tank together, and then interconnects with the main station, which simplifies the circuit and improves the expansion performance of the main station electric cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the layout of the centralized cutting fluid treatment system.

[0015] In the attached figure: 1-machine tool application end; 2-single machine liquid tank; 3-return liquid pipeline; 4-liquid supply pipeline; 5-main station liquid tank; 6-main station electric cabinet; 7-sub-electrical cabinet; 8-communication line; 9-main station clean liquid tank; 10-main station dirty liquid tank; 11-liquid supply pump; 12-self-circulation valve; 13-liquid supply valve; 14-self-circulation pipeline; 15-circulation pump; 16-filtration equipment; 17-ozone generator; 18-liquid level sensor; 19-single machine liquid tank clean liquid area; 20-single machine liquid tank dirty liquid area; 21-filter; 22-return liquid pump; 23-machine tool liquid supply pump; 24-liquid replenishment valve; 25-safety valve; 26-pipeline filter. Implementation

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or an integral connection, it can also be a mechanical connection or a detachable connection, and it can also be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Installation layout method, taking actual application cases as an example: The system pipeline is divided into main pipeline and branch pipeline, and the main pipeline and branch pipeline respectively include liquid supply pipeline 4 and liquid return pipeline 3. The main pipeline adopts plastic-lined steel pipe, and the branch pipeline adopts plastic-lined steel pipe and rubber pipe to connect. The overall design of the main pipeline is "upper supply and upper discharge".

[0018] In actual installation, the installation slope of the liquid supply pipeline is 0.3%, and the installation slope of the liquid return pipeline is 0.5%, to ensure that the cutting fluid has a certain flow rate in a natural state. Safety valves 25 are installed at the ends of the liquid supply pipeline 4 and the liquid return pipeline 3 to prevent risks caused by excessive pressure after the pipeline is blocked.

[0019] The main pipeline and the branch pipeline are connected with a three-way joint. The branch pipeline mainly adopts a plastic-lined steel pipe, and the connection between the branch pipeline and the single-machine liquid tank adopts a rubber tube. The return liquid branch pipeline needs to be installed with a pipeline filter 26, and the liquid supply branch pipeline needs to be installed with a liquid replenishment valve 24.

[0020] The operation of a centralized cutting fluid treatment system includes the following steps: (1) Single-machine liquid tank supply circulation When the machine tool is turned on, the single machine liquid tank 2 supplies liquid to the machine tool application end 1, mainly including: ① The machine tool liquid supply pump 23 supplies liquid to the machine tool application end 1: When the machine tool is turned on, the machine tool liquid supply pump 23 delivers the cutting fluid in the clean liquid area of ​​the single machine liquid tank to the machine tool application end for its use.

[0021] ② The dirty liquid flows from the machine tool application end 1 into the single machine liquid tank dirty liquid area 20: after being used by the machine tool application end 1, the dirty liquid containing impurities such as chips and floating oil automatically flows back to the single machine liquid tank dirty liquid area 20.

[0022] ③ The dirty liquid flows into the clean liquid area after being filtered: the cutting fluid in the dirty liquid area 20 of the single machine liquid tank is filtered by the filter 21 and flows into the clean liquid area 19 of the single machine liquid tank.

[0023] (2) Replacement and replenishment of liquid in a single tank The cutting fluid in the main station tank 5 automatically replaces and replenishes the single machine tank 2, mainly including: ① The liquid return pump 22 pumps the cutting fluid in the single-machine liquid tank 2 back to the main station dirty liquid tank 10: The liquid return pump 22 pumps the cutting fluid in the single-machine liquid tank 2 to the liquid return pipeline 3, and finally flows into the main station dirty liquid tank 10.

[0024] ② The dirty liquid in the main station dirty liquid tank 10 flows into the main station clean liquid tank 9 after purification: the circulating pump 15 draws the cutting fluid in the main station dirty liquid tank 10 to the filtering equipment 16, and the dirty liquid flows into the main station clean liquid tank 9 after filtering, and then is sterilized by the ozone generator 17.

[0025] ③ The liquid supply pump 11 pumps the clean liquid to the single-machine liquid tank 2: The liquid supply pump 11 delivers the clean liquid to the single-machine liquid tank 2 through the liquid supply pipeline 4.

[0026] (3) Terminal self-circulation Without replenishing or replacing the liquid in the single-machine liquid tank 2, the liquid supply pump 11 can pump the clean liquid to the main station dirty liquid tank 10 through the self-circulating pipeline. The dirty liquid in the main station dirty liquid tank 10 flows into the main station clean liquid tank 9 after being lifted and purified. The two operate alternately, thereby continuously purifying the cutting fluid in the main station liquid tank 5, forming a main station self-circulation.

[0027] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

Claims

1. A cutting fluid centralized processing system, mainly comprising a machine tool application end (1), a single machine fluid tank (2), a return fluid pipeline (3), a fluid supply pipeline (4), a main station fluid tank (5), a main station electrical cabinet (6), a sub-electrical cabinet (7), and a communication line (8), wherein the machine tool application end (1) is equipped with a sub-electrical cabinet (7), the sub-electrical cabinet (7) integrates the electrical components of the machine tool application end (1) and the single machine fluid tank (2), the main station fluid tank (5) and the main station electrical cabinet (6) are placed together, and network communication is performed between the sub-electrical cabinets (7) and between the sub-electrical cabinets (7) and the main station electrical cabinet (6) via the communication line (8); The main station liquid tank (5) comprises a main station clean liquid tank (9), a main station dirty liquid tank (10), two liquid supply pumps (11), a self-circulating valve (12), a liquid supply valve (13), a self-circulating pipeline (14), a circulating pump (15), a filtering device (16), an ozone generator (17), and a liquid level sensor (18). The liquid supply pump (11) is placed on the main station clean liquid tank (9). The outlet of the liquid supply pump (11) is divided into two paths, one of which is connected to the liquid supply valve (13) and the other is connected to the self-circulating valve (12). The liquid supply valve (13) connected to the liquid supply pipeline (4), and the self-circulation valve (12) is connected to the self-circulation pipeline (14); the circulation pump (15) is placed on the main station dirty liquid tank (10), the outlet of the circulation pump (15) is connected to the filtering device (16), and the dirty liquid can be transported to the filtering device (16), the outlet of the filtering device (16) is connected to the main station clean liquid tank (9), the ozone generator (17) is placed in the main station clean liquid tank (9), and a liquid level sensor (18) is provided on the main station clean liquid tank (9) and the main station dirty liquid tank (10); The single-machine liquid tank (2) comprises a single-machine liquid tank clean liquid area (19), a single-machine liquid tank dirty liquid area (20), a filter (21), a liquid return pump (22), a machine tool liquid supply pump (23), a liquid replenishing valve (24), and a liquid level sensor (18). The dirty liquid used by the machine tool application end (1) flows to the single-machine liquid tank dirty liquid area (20). The single-machine liquid tank clean liquid area (19) and the dirty liquid area (20) are separated by the filter (21). The liquid return pump (22) is connected to the liquid return pipeline (3) and is responsible for pumping the cutting fluid back to the main station dirty liquid tank (10). The machine tool liquid supply pump (23) is responsible for supplying liquid to the machine tool application end (1). The main station liquid tank (5) and the single machine liquid tank (2) are connected via a pipeline, and the pipeline is composed of a return liquid pipeline (3), a liquid supply pipeline (4), a safety valve (25), a pipeline filter (26), etc.

2. A cutting fluid centralized treatment system according to claim 1, characterized in that: The liquid supply pipeline (4) connects the main station liquid purification tank (9) and the single machine liquid purification tank area (19) together, and automatic liquid replenishment can be achieved by controlling the liquid supply pump (11) and the liquid replenishment valve (24).

3. A cutting fluid centralized treatment system according to claim 1, characterized in that: The liquid return pipeline (3) connects the main station dirty liquid tank (10) and the single machine liquid tank dirty liquid area (20) together, and automatic liquid replacement can be achieved by controlling the liquid return pump (22) and the liquid replenishment valve (24).

4. A cutting fluid centralized treatment system according to claim 1, characterized in that: The main station dirty liquid tank (10) can supply liquid through a circulation pump (15) and pass through a filtering device (16) to achieve automatic circulation and filtration of the cutting fluid with the main station clean liquid tank (9).

5. A cutting fluid centralized treatment system according to claim 1, characterized in that: There are two liquid supply pumps (11), which operate intermittently and serve as backup for each other to prevent pump damage from affecting the circulation of cutting fluid in the system.

6. A cutting fluid centralized treatment system according to claim 1, characterized in that: A safety valve (25) is provided between the liquid supply pipeline (4) and the liquid return pipeline (3) to prevent safety risks caused by excessive pressure in the liquid supply pipeline or the liquid return pipeline.

7. A cutting fluid centralized treatment system according to claim 1, characterized in that: The liquid supply pipeline has a slope of 0.2%-0.5%, and the liquid return pipeline (3) has a slope of 0.5%-0.8%, so as to make full use of gravity to achieve the flow of cutting fluid.

8. A cutting fluid centralized treatment system according to claim 1, characterized in that: A pipeline filter (26) is installed between the liquid return pipeline (3) and the liquid return pump (22) to prevent the pipeline from being blocked.

9. A filtering method using the cutting fluid centralized treatment system according to claim 1, characterized in that: The following steps are involved: 1) The system liquid supply pump (11) transports the clean cutting fluid from the main station liquid tank (5) to the single machine liquid tank clean liquid area (19) through the liquid supply pipeline (4), and the machine tool liquid supply pump (23) transports the clean cutting fluid to the machine tool application end (1) for use; 2) The used dirty liquid flows to the dirty liquid area (20) of the single-machine liquid tank, and after being initially filtered by the filter screen (21) and the like, is transported back to the dirty liquid area (20) of the single-machine liquid tank by the return pump (22) through the return pipeline (3); 3) The dirty liquid in the dirty liquid area (20) of the single machine liquid tank is transported by the circulation pump (15), further filtered by the filtering device (16) and then transported to the clean liquid area (19) of the single machine liquid tank. After being sterilized by the ozone generator (17), the dirty liquid is transported to the clean liquid area (19) of the single machine liquid tank again by the liquid supply pump (11) for use by the machine tool application end (1).

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