Centralized liquid supplying, filtering and purifying combined all-in-one machine for water-soluble metal working liquid

Abstract

The utility model discloses a water-soluble metal working fluid concentrated liquid supply, filtration and purification combined all-in-one machine which comprises a new liquid tank and a liquid return tank, an electric control box is fixed at the front end of the new liquid tank, a main control system, an automatic proportioning module and an automatic constant-pressure liquid supply device are installed in the electric control box, and a water outlet of the automatic proportioning module is communicated with a water inlet of the new liquid tank. A water outlet of the new liquid tank is communicated with a water inlet of an automatic constant-pressure liquid supply device, a water outlet of the automatic constant-pressure liquid supply device is communicated with a water inlet of the liquid return tank, the main control system comprises an ozone generator, the ozone generator is connected with a ceramic aeration generation device through an air pipe, and the ceramic aeration generation device is installed in the liquid return tank. A stirrer extending into the new liquid tank is mounted on the new liquid tank, a drum type paper tape filter and a steel belt type oil-water separator are mounted on the liquid return tank, and a precision filter device is mounted on the outer side of the liquid return tank and communicated with the drum type paper tape filter and the liquid return tank through pipes. The automatic proportioning machine can solve the problems of an automatic proportioning machine in the prior art.

Description

Technical Field

[0001] The utility model relates to a water-soluble metalworking fluid centralized liquid supply, filtration and purification combined all-in-one machine. Background Art

[0002] The existing technology mainly relies on single ratio dilution, which usually has the following problems:

[0003] The automatic proportioning machine only has a single proportion of dilution, which fails to achieve uniform dispersion of the chemical molecules in the diluted liquid, resulting in some effective substances being in a free state and gradually floating to the liquid surface, which is the soap precipitation phenomenon;

[0004] During the use of metalworking fluids, due to working conditions, a large amount of waste, oil and various dust particles are mixed in, resulting in a shortened service life of the metalworking fluids, thereby generating a large amount of industrial wastewater. Previous equipment only provided single filtration or oil removal, and failed to provide multi-effect combined filtration and purification.

[0005] There is no special equipment to automatically proportion metalworking fluids for sufficient uniform use, nor is there any centralized collection of contaminated fluids for multi-stage filtration, purification, sterilization and deodorization before reuse. Utility Model Content

[0006] In view of the above-mentioned defects of the prior art, the purpose of the present utility model is to provide a water-soluble metalworking fluid centralized liquid supply, filtration and purification combined all-in-one machine.

[0007] The technical solution of the utility model is: a water-soluble metalworking fluid centralized liquid supply, filtration and purification combined all-in-one machine, including a new liquid tank and a return liquid tank, an electric control box is fixed at the front end of the new liquid tank, a main control system, an automatic proportioning module and an automatic constant pressure liquid supply device are installed in the electric control box, a water outlet of the automatic proportioning module is connected to a water inlet of the new liquid tank, the water outlet of the new liquid tank is connected to a water inlet of the automatic constant pressure liquid supply device, the water outlet of the automatic constant pressure liquid supply device is connected to the water inlet of the return liquid tank, the main control system includes an ozone generator, the ozone generator is connected to a ceramic aeration generating device through an air pipe, the ceramic aeration generating device is installed in the return liquid tank, a stirrer extending into the new liquid tank is installed on the new liquid tank, a drum-type paper belt filter and a steel belt oil-water separator are installed on the return liquid tank, a precision filtering device is installed on the outer side of the return liquid tank, and the precision filtering device is connected to the drum-type paper belt filter and the return liquid tank through a pipe.

[0008] Furthermore, the automatic proportioning module includes a water inlet pipe and a raw liquid input pipeline, the water outlet of the water inlet pipe is connected to a raw water filter through a pipe, the water outlet of the raw water filter is connected to a solenoid valve through a pipe, the water outlet of the solenoid valve is connected to a proportional proportioner through a pipe, the water inlet of the proportional proportioner is connected to the raw liquid input pipeline through a pipe, the water outlet of the proportional proportioner is connected to a mixed liquid output pipeline, and the water outlet of the mixed liquid output pipeline is connected to a new liquid tank.

[0009] Furthermore, the automatic constant pressure liquid supply device includes an electromagnetic reversing valve, a multi-stage centrifugal pump connected to the electromagnetic reversing valve through a pipe, and a constant pressure tank connected to the upper end of the multi-stage centrifugal pump. The multi-stage centrifugal pump is connected to a new liquid tank input pipe and a return liquid tank output pipe. The water outlet of the new liquid tank is connected to the water inlet of the new liquid tank input pipe through a pipe, and the water outlet of the return liquid tank output pipe is connected to the water inlet of the return liquid tank through a pipe.

[0010] Furthermore, the multi-stage centrifugal pump is connected to a liquid supply output pipeline through a pipe.

[0011] Furthermore, a normally closed and normally open double-circuit signal electrostatic pipe card type liquid level sensor is installed on the raw liquid input pipeline.

[0012] Furthermore, the precision filtration device includes a two-stage bag filter and a gear pump. The water inlet of the two-stage bag filter is connected to the water outlet of the gear pump through a pipe, the water inlet of the gear pump is connected to the water outlet of the return liquid tank through a pipe, and the water outlet of the two-stage bag filter is connected to the return liquid tank through a pipe.

[0013] Furthermore, the precision filtration device includes a pre-filter and a diaphragm pump, the water outlet of the diaphragm pump is connected to the water inlet of the drum paper belt filter through a pipe, the water outlet of the pre-filter is connected to the water inlet of the diaphragm pump through a pipe, and the water inlet of the pre-filter is connected to a suction pipe.

[0014] Furthermore, the drum-type paper belt filter is located on the top of the liquid return tank, the steel belt-type oil-water separator extends into the liquid return tank, and the steel belt-type oil-water separator is connected to the guide tank.

[0015] Furthermore, the workflow of the all-in-one machine includes the following steps:

[0016] (1) Connect the tap water to the water inlet pipe, connect the stock solution input pipe to the stock solution barrel that needs to be diluted, connect the air pipe, and connect the power supply;

[0017] (2) Turn on the power button of the electric control box and set the corresponding technical parameters through the electric control box according to the actual on-site use requirements;

[0018] (3) adjusting the proportioning device, according to the corresponding required proportioning ratio, the metalworking fluid stock solution and tap water flow into the proportioning device through the stock solution input pipe and the water inlet pipe respectively for proportioning, and then flow into the new liquid tank through the mixed liquid output pipe after mixing. After the new liquid enters the new liquid tank, according to the real-time immersion depth of the liquid level, the liquid level sensor in the new liquid tank inputs the real-time data into the PLC for program control, and controls the opening or closing of the solenoid valve according to the requirements, controls the amount of liquid to be distributed in the new liquid tank, and according to the setting, the agitator is started synchronously to fully stir the new liquid;

[0019] (4) Start the multi-stage centrifugal pump, and the liquid in the new liquid tank is sucked into the multi-stage centrifugal pump through the pipe, and the pipe outputs constant pressure. The pressure value in the pipeline is monitored in real time by the pressure sensor, and the pressure value is input into the PLC for processing and control. The multi-stage centrifugal pump is started or stopped according to the setting of the pressure parameter value, and the autonomous and automatic liquid supply is completed;

[0020] (5) The output pipeline of the return tank transports the dirty processing fluid to the return tank. When the dirty return fluid in the return tank reaches a certain liquid level, the new liquid mixing value is input. The gear pump starts according to the PLC instruction and starts to operate regularly to suck the metalworking fluid in the return tank. The gear pump runs and the two-stage bag filter performs precision filtration to remove particulate matter. The metalworking fluid after precision filtration flows into the return tank again through the pipe for circulation. This cycle of precision filtration is repeated to meet the use requirements. At the same time, the PLC issues a command to power on the ozone generator. Air is input into the ozone generator through the air pipe. The ozone generated by the ozone generator is input into the ceramic aeration generating device at the bottom of the return tank through the air pipe. The gas is subdivided into tiny gas droplets and enriched in the metalworking fluid to kill the anaerobic bacteria in the metalworking fluid. According to the parameter setting, After a certain period of time of circulating filtration and synchronous sterilization and deodorization, the gear pump and ozone generator stop and wait for the next cycle to start. Then, according to the actual content of oil in the metalworking fluid, the PLC automatically starts the steel belt oil-water separator according to the set parameter instructions to perform timed oil removal. The steel belt immersed in the steel belt oil-water separator starts to rotate, adsorbing the surface floating oil of the metalworking fluid on the surface of the steel belt, and lifting it up to the upper end of the steel belt oil-water separator. The adsorbed oil is scraped off by the scraper and flows into the diversion groove, and then settles again through the secondary separation box, and the oil with higher oil purity is separated and flows out to the diversion groove for removal. At the same time, according to the PLC program parameter instructions, the program automatically opens the solenoid valve, and the proportional liquid distributor starts to mix the new liquid, which flows into the return liquid tank through the pipe, and the filtration and purification are repeated in this cycle;

[0021] (6) The metalworking fluid that has been filtered and purified to meet the use requirements is transported back to the multi-stage centrifugal pump and output to the use equipment through the liquid supply output pipeline;

[0022] (7) Suction equipment for scattered dirty return liquid of metalworking fluid, start the diaphragm pump, connect the suction pipe to the hose, insert the hose into the collected scattered dirty return liquid bucket, and directly suction. The dirty return liquid is sucked into the diaphragm pump through the pipe, and then output to the drum paper belt filter for particle filtration, and then flows into the return liquid tank. After the scattered return liquid is sucked out, turn off the diaphragm pump.

[0023] The utility model has the following beneficial effects:

[0024] 1: The new liquid tank simply adds an agitator to stir the newly formulated metalworking fluid, improve fluidity, solve the problem of soap precipitation during the mixing process of the metalworking fluid, and ensure the uniform functional properties of the metalworking fluid after proportioning;

[0025] 2: By adopting the normally closed and normally open double-circuit signal electrostatic tube card type liquid level sensor 12, the stability of the raw liquid input during the proportioning is monitored to avoid the problem of unstable proportion concentration caused by the lack of raw liquid, and solve the trouble of manual supervision during the liquid mixing process and the need to check the consumption status of the raw liquid barrel in real time;

[0026] 3: It uses a normally closed and normally open dual-circuit signal electrostatic tube card type liquid level sensor, and there is no need to fix the sensor in the original liquid barrel;

[0027] 4: The combination design of drum paper filter and precision filtration device is adopted to achieve graded filtration, improve filtration efficiency and reduce excessive use of filtration consumables;

[0028] 5: Through integrated design, the automatic liquid preparation, centralized filtration and sterilization and deodorization purification of metalworking fluids are modularly designed. Combined with the usage characteristics of metalworking fluids, filtration and purification treatment are performed in steps to improve work efficiency, improve the application conditions of the application factory, and save land costs;

[0029] 6: The dual-component design of automatic proportioning and automatic liquid supply can not only improve efficiency, but also play the role of "one backup and one use", ensuring the risk of downtime caused by equipment maintenance or anchoring at the application site. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0031] As shown in the figure: 1-new liquid tank, 2-return liquid tank, 3-electric control box, 4-main control system, 41-ozone generator, 5-automatic proportioning module, 51-water inlet pipe, 52-raw liquid input pipeline, 53-raw water filter, 54-solenoid valve, 55-proportional proportioner, 56-mixed liquid output pipeline, 6-automatic constant pressure liquid supply device, 61-solenoid reversing valve, 62-multistage centrifugal pump, 63-constant pressure tank, 64-new liquid tank input pipeline , 65—return liquid tank output pipeline, 66—liquid supply output pipeline, 7—ceramic aeration generating device, 8—agitator, 9—drum paper belt filter, 10—steel belt oil-water separator, 11—precision filtering device, 111—two-stage bag filter, 112—gear pump, 113—pre-filter, 114—diaphragm pump, 115—suction pipe, 12—normally closed and normally open dual-circuit signal electrostatic tube card type liquid level sensor, 13—guide trough. DETAILED DESCRIPTION

[0032] In order to more intuitively and completely understand the technical solution of the utility model, the following non-limiting feature description is now provided in conjunction with the accompanying drawings of the utility model:

[0033] like Figure 1 As shown, a water-soluble metalworking fluid centralized liquid supply, filtration and purification combined integrated machine includes a new liquid tank 1 and a return liquid tank 2. An electric control box 3 is fixed at the front end of the new liquid tank 1. A main control system 4, an automatic proportioning module 5 and an automatic constant pressure liquid supply device 6 are installed in the electric control box 3. The water outlet of the automatic proportioning module 5 is connected to the water inlet of the new liquid tank 1, the water outlet of the new liquid tank 1 is connected to the water inlet of the automatic constant pressure liquid supply device 6, and the water outlet of the automatic constant pressure liquid supply device 6 is connected to the water inlet of the return liquid tank 2. The main control system 4 includes an ozone generator 41, which is connected to a ceramic aeration generator 7 through an air pipe. The ceramic aeration generator 7 is installed in the return liquid tank 2. The new liquid tank 1 is provided with an agitator 8 extending into the new liquid tank 1. The return liquid tank 2 is provided with a drum-type paper belt filter 9 and a steel belt-type oil-water separator 10. A precision filtering device 11 is installed outside the return liquid tank 2. The precision filtering device 11 is connected to the drum-type paper belt filter 9 and the return liquid tank 2 through a pipe.

[0034] The main control system 4 also includes a touch screen, a power air switch, a transformer, a PLC, a relay module, a contactor module, etc.

[0035] The automatic proportioning module 5 includes a water inlet pipe 51 and a raw liquid input pipeline 52, the water outlet of the water inlet pipe 51 is connected to a raw water filter 53 through a pipe, the water outlet of the raw water filter 53 is connected to a solenoid valve 54 through a pipe, the water outlet of the solenoid valve 54 is connected to a proportional proportioner 55 through a pipe, the water inlet of the proportional proportioner 55 is connected to the raw liquid input pipeline 52 through a pipe, the water outlet of the proportional proportioner 55 is connected to a mixed liquid output pipeline 56, and the water outlet of the mixed liquid output pipeline 56 is connected to the new liquid tank 1.

[0036] The automatic constant pressure liquid supply device 6 includes an electromagnetic reversing valve 61, a multistage centrifugal pump 62 connected to the electromagnetic reversing valve 61 through a pipe, and a constant pressure tank 63 connected to the upper end of the multistage centrifugal pump 62. The multistage centrifugal pump 62 is connected to a new liquid tank input pipe 64 and a return liquid tank output pipe 65. The water outlet of the new liquid tank 1 is connected to the water inlet of the new liquid tank input pipe 64 through a pipe, and the water outlet of the return liquid tank output pipe 65 is connected to the water inlet of the return liquid tank 2 through a pipe.

[0037] The multi-stage centrifugal pump 62 is connected to a liquid supply output pipeline 66 via a pipe.

[0038] A normally closed normally open double-circuit signal electrostatic tube card type liquid level sensor 12 is installed on the raw liquid input pipeline 52 .

[0039] The precision filtering device 11 includes a two-stage bag filter 111 and a gear pump 112. The water inlet of the two-stage bag filter 111 is connected to the water outlet of the gear pump 112 through a pipe, the water inlet of the gear pump 112 is connected to the water outlet of the return liquid tank 2 through a pipe, and the water outlet of the two-stage bag filter 111 is connected to the water inlet of the return liquid tank 2 through a pipe.

[0040] The precision filtering device 11 includes a pre-filter 113 and a diaphragm pump 114. The water outlet of the diaphragm pump 114 is connected to the water inlet of the drum paper belt filter 9 through a pipe. The water outlet of the pre-filter 113 is connected to the water inlet of the diaphragm pump 114 through a pipe. The water inlet of the pre-filter 113 is connected to a suction pipe 115.

[0041] The drum-type paper belt filter 9 is located at the top of the liquid return tank 2 , and its water outlet is connected to the liquid return tank 2 . The steel belt-type oil-water separator 10 extends into the liquid return tank 2 , and the steel belt-type oil-water separator 10 is connected to the guide tank 13 .

[0042] The workflow of the all-in-one machine includes the following steps:

[0043] (1) Connect the tap water to the water inlet pipe 51, connect the stock solution input pipe 52 to the stock solution barrel (not shown) that needs to be diluted, connect the air pipe, and connect the power supply;

[0044] (2) Turn on the power button of the electric control box and set the corresponding technical parameters through the electric control box according to the actual on-site use requirements;

[0045] (3) Adjusting the proportioning device 55. According to the corresponding required proportioning ratio, the metalworking liquid and tap water flow into the proportioning device 55 through the liquid input pipe 52 and the water inlet pipe 51 respectively for proportioning. After mixing, they flow into the new liquid tank 1 through the mixed liquid output pipe 56. After the new liquid enters the new liquid tank 1, according to the real-time immersion depth of the liquid level, the liquid level sensor (not shown in the figure) in the new liquid tank 1 inputs the real-time data into the PLC for program control. According to the requirements, the electromagnetic valve 54 is controlled to be opened or closed to control the amount of liquid to be distributed in the new liquid tank 1. According to the setting, the agitator 8 is started synchronously to fully stir the new liquid;

[0046] (4) Start the multi-stage centrifugal pump 62. The liquid in the new liquid tank 1 is sucked into the multi-stage centrifugal pump 62 through the pipe and outputted at a constant pressure through the pipe. The pressure value in the pipeline is monitored in real time by a pressure sensor (not shown in the figure). The pressure value is input into the PLC for processing and control. The multi-stage centrifugal pump 62 is started or stopped according to the setting of the pressure parameter value, thereby completing the autonomous and automatic liquid supply.

[0047] (5) The return tank output pipe 65 transports the used dirty processing fluid to the return tank 2. When the dirty return fluid in the return tank 2 reaches a certain liquid level, the new liquid mixing value is input, and the gear pump 112 is started according to the PLC instruction and starts to operate regularly to suck the metal processing fluid in the return tank 2. The gear pump 112 is running, and the two-stage bag filter 111 performs precision filtration to remove particulate matter. The metal processing fluid after precision filtration flows into the return tank 2 again through the pipe for circulation. The precise filtration is repeated in this way to meet the use requirements. At the same time, the PLC issues an instruction to power on the ozone generator 41, and air is input into the ozone generator 41 through the air pipe. The ozone generated by the ozone generator 41 is input into the ceramic aeration generating device 7 at the bottom of the return tank 2 through the air pipe. The gas is subdivided into tiny gas droplets and enriched in the metal processing fluid to kill the anaerobic bacteria in the metal processing fluid and play a role in sterilization and deodorization. According to the parameter setting program, after the circulation filtration and synchronous sterilization and deodorization work for a certain period of time, the gear pump 112 and the ozone generator The device 41 stops, and waits for the next cycle to start. Then, according to the actual content of oil in the metalworking fluid, the PLC automatically starts the steel belt oil-water separator 10 according to the set parameter instructions, performs the timed oil removal action, and the steel belt immersed in the steel belt oil-water separator 10 starts to rotate, adsorbs the surface floating oil of the metalworking fluid on the surface of the steel belt, and lifts it upward to the upper end of the steel belt oil-water separator 10. The adsorbed oil is scraped off by the scraper and flows into the guide groove 13, and then settles again through the secondary separation box, and the oil with higher oil purity is separated and flows out to the guide groove 13 for removal. At the same time, the PLC program parameter instructions, the program automatically opens the solenoid valve 54, and the proportional liquid distributor starts to mix the new liquid, which flows into the return liquid tank 2 through the pipe. Since the dirty metalworking fluid in the return liquid tank 2 will consume its material components during use, resulting in a decrease in performance and stability, it can be quickly replenished and mixed by adding new liquid. In this way, the filtering and purification are repeated in a cycle, thereby stabilizing the performance of the metalworking fluid until it meets the normal use requirements;

[0048] (6) According to the technical requirements on site, the tank switching button (not shown in the figure) is turned. At this time, the reversing valve (not shown in the figure) on the output pipe connecting the new tank 1 and the return tank 2 at the bottom will automatically connect according to the needs, and the new tank 1 will be switched to the return tank 2, and the metalworking fluid that has been filtered and purified to meet the use requirements will be reversely transported back to the multi-stage centrifugal pump 62 and output to the use equipment through the liquid supply output pipe 66;

[0049] (7) The scattered dirty return liquid of the metalworking fluid is sucked out by the suction equipment. The diaphragm pump 114 is started. The suction pipe 115 is connected to the hose. The hose is inserted into the collected scattered dirty return liquid bucket. The dirty return liquid is sucked into the diaphragm pump 114 through the pipe, and then output to the drum paper belt filter 9 for particle filtration, and then flows into the return liquid tank 2. After the scattered return liquid is sucked out, the diaphragm pump 114 is turned off.

[0050] The utility model adopts a multifunctional integrated combination integrated design. According to the use characteristics of water-soluble metalworking fluid, the utility model starts with automatic proportioning of the metalworking fluid, fully stirs and mixes it, outputs automatic liquid supply, and then performs centralized filtration and purification treatment of dirty return liquid after use. By improving the proportioning process, the phenomenon that some additive molecules are free and precipitated due to the failure of rapid chemical molecular mixing in the dissolution and dispersion process of the metalworking fluid and tap water reduces the use efficiency of metal processing. By adding the function of timely stirring in the new liquid tank 1, the metalworking fluid can continue to flow rapidly. Due to the low density, the free molecules in the liquid are not floated on the liquid surface and have sufficient time to continue to mix with other water molecules, thereby improving and ensuring the best functional properties of the metalworking fluid. At the raw liquid input end of the proportional proportioner 55, a normally closed and normally open double-circuit signal electrostatic tube card type liquid level sensor 12 is used to improve the manual inspection of the use status of the raw liquid and solve the trouble of inserting a fixed monitoring sensor in the raw liquid barrel. The normally closed and normally open double-circuit signal electrostatic tube card type liquid level sensor 12 monitors whether the metalworking liquid raw liquid input is missing in real time. When the metalworking liquid in the raw liquid input pipeline 52 is missing, the normally closed and normally open double-circuit signal electrostatic tube card type liquid level sensor 12 display light goes out (not shown in the figure) and the raw liquid missing signal is transmitted to the PLC for processing in real time. The PLC will simultaneously issue a warning buzzer (not shown in the figure) and turn on the red warning light. The display screen will also display the alarm raw liquid missing information at the same time. The main control system 4 will also shut down the automatic liquid supply operation until the operator replenishes and replaces the new raw liquid, and then manually clicks the manual liquid preparation button on the display screen (not shown in the figure) to open the solenoid valve 54 of the proportional proportioner 55 and manually start the liquid preparation operation. This is mainly to re-absorb the newly replaced raw liquid into the raw liquid input pipeline 52 and discharge the space in the pipeline. After the air is removed, the system alarm is eliminated, and then the automatic liquid supply start button (not shown in the figure) is pressed again to start the automatic liquid supply. The application of this technology is combined with design, and only the original liquid needs to be simply replaced, which greatly saves the operation time of manual liquid preparation. During the use of metalworking fluid, a small amount of metal fine particles, oxides and oil stains will be mixed in. However, with the long-term accumulation of use time, the impurities in the metalworking fluid will slowly accumulate and breed bacteria, causing the metalworking fluid to organically decompose, rot, deteriorate and stink. In order to improve this situation, a water-soluble metalworking fluid centralized liquid supply, filtration and purification integrated machine is integrated to design, and the return liquid after use is centralized and refluxed for treatment. Through the drum paper belt filter 9, the particles above 10 microns in the metalworking fluid are filtered out and then flow into the return liquid tank 2. After pressing the start circulation purification button (not shown in the figure), the circulation filtration and purification is started. The metalworking fluid in the return liquid tank 2 is sucked and pressurized by the gear pump 112, and then enters the precision filtration device 11 through the pipe for filtration. The filtration accuracy filters out solid particles above 5 microns, and then it is pumped to the return liquid tank 2 again through the pipe.

[0051] In summary, the new liquid tank 1 of the utility model stirs the newly prepared metalworking fluid by simply adding a stirrer 8, thereby improving fluidity, solving the problem of soap precipitation of the metalworking fluid during the mixing process, and ensuring the uniform functional properties of the metalworking fluid after the proportion is proportioned;

[0052] The utility model adopts a normally closed and normally open double-circuit signal electrostatic tube card type liquid level sensor 12 to monitor the stability of the raw liquid input during the proportioning, avoid the problem of unstable proportioning concentration caused by the lack of raw liquid, and solve the trouble of manual supervision and real-time viewing of the consumption status of the raw liquid barrel during the liquid mixing process;

[0053] The utility model adopts a normally closed normally open double-circuit signal electrostatic tube card type liquid level sensor 12, and there is no need to fix the sensor in the original liquid barrel;

[0054] The utility model adopts a combined design of a drum-type paper belt filter 9 and a precision filtering device 11, performs graded filtering, improves filtering efficiency, and reduces excessive use of filtering consumables;

[0055] The utility model adopts an integrated design to modularize the automatic liquid preparation, centralized filtration and sterilization and deodorization purification of metalworking fluids. Combined with the use characteristics of metalworking fluids, the filtration and purification treatment is performed in steps, which improves the working efficiency, improves the application conditions of the application factory, and saves the land cost.

[0056] The utility model adopts a two-component design of adding automatic proportioning and automatic liquid supply, which can not only improve the efficiency, but also play the role of "one backup and one use", ensuring the risk of downtime caused by equipment maintenance or anchoring at the application site.

[0057] Of course, the above are only preferred embodiments of the present invention, and the patent scope of the present invention is not limited thereto. All simple modifications and equivalent structural changes made using the description and drawings of the present invention should be included in the patent protection scope of the present invention.

Claims

1. A water-soluble metalworking fluid centralized liquid supply, filtration and purification combined all-in-one machine, characterized by: It includes a new liquid tank and a return liquid tank. An electric control box is fixed at the front end of the new liquid tank. A main control system, an automatic proportioning module and an automatic constant pressure liquid supply device are installed in the electric control box. The water outlet of the automatic proportioning module is connected to the water inlet of the new liquid tank. The water outlet of the new liquid tank is connected to the water inlet of the automatic constant pressure liquid supply device. The water outlet of the automatic constant pressure liquid supply device is connected to the water inlet of the return liquid tank. The main control system includes an ozone generator. The ozone generator is connected to a ceramic aeration device through an air pipe. The ceramic aeration device is installed in the return liquid tank. An agitator extending into the new liquid tank is installed on the new liquid tank. A drum paper belt filter and a steel belt oil-water separator are installed on the return liquid tank. A precision filtering device is installed on the outer side of the return liquid tank. The precision filtering device is connected to the drum paper belt filter and the return liquid tank through a pipe.

2. The water-soluble metalworking fluid centralized supply, filtration and purification combined all-in-one machine according to claim 1, characterized in that: The automatic proportioning module includes a water inlet pipe and a raw liquid input pipeline, the water outlet of the water inlet pipe is connected to a raw water filter through a pipe, the water outlet of the raw water filter is connected to a solenoid valve through a pipe, the water outlet of the solenoid valve is connected to a proportional proportioner through a pipe, the water inlet of the proportional proportioner is connected to the raw liquid input pipeline through a pipe, the water outlet of the proportional proportioner is connected to a mixed liquid output pipeline, and the water outlet of the mixed liquid output pipeline is connected to a new liquid tank.

3. The water-soluble metalworking fluid centralized liquid supply, filtration and purification combined all-in-one machine according to claim 2, characterized in that: The automatic constant pressure liquid supply device includes an electromagnetic reversing valve, a multi-stage centrifugal pump connected to the electromagnetic reversing valve through a pipe, and a constant pressure tank connected to the upper end of the multi-stage centrifugal pump. The multi-stage centrifugal pump is connected to a new liquid tank input pipe and a return liquid tank output pipe. The water outlet of the new liquid tank is connected to the water inlet of the new liquid tank input pipe through a pipe, and the water outlet of the return liquid tank output pipe is connected to the water inlet of the return liquid tank through a pipe.

4. The water-soluble metalworking fluid centralized supply, filtration and purification combined all-in-one machine according to claim 3, characterized in that: The multistage centrifugal pump is connected to a liquid supply output pipeline through a pipe.

5. The water-soluble metalworking fluid centralized supply, filtration and purification combined all-in-one machine according to claim 4, characterized in that: A normally closed and normally open double-circuit signal electrostatic pipe card type liquid level sensor is installed on the raw liquid input pipeline.

6. The water-soluble metalworking fluid centralized supply, filtration and purification combined all-in-one machine according to claim 5, characterized in that: The precision filtration device includes a two-stage bag filter and a gear pump. The water inlet of the two-stage bag filter is connected to the water outlet of the gear pump through a pipe, the water inlet of the gear pump is connected to the water outlet of the return liquid tank through a pipe, and the water outlet of the two-stage bag filter is connected to the return liquid tank through a pipe.

7. The water-soluble metalworking fluid centralized supply, filtration and purification combined all-in-one machine according to claim 6, characterized in that: The precision filtering device includes a pre-filter and a diaphragm pump. The water outlet of the diaphragm pump is connected to the water inlet of the drum paper belt filter through a pipe. The water outlet of the pre-filter is connected to the water inlet of the diaphragm pump through a pipe. The water inlet of the pre-filter is connected to a suction pipe.

8. A water-soluble metalworking fluid centralized liquid supply, filtration and purification combined all-in-one machine according to claim 1 or 7, characterized in that: The drum-type paper belt filter is located on the top of the liquid return tank, the steel belt-type oil-water separator extends into the liquid return tank, and the steel belt-type oil-water separator is connected with a guide tank.

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