Device for testing corrosion resistance of water-based metal working fluid

Abstract

The utility model provides a corrosion resistance testing device for water-based metal working fluid. The working fluid detection device comprises a fluid containing box, a circulating assembly and a detection assembly, a containing cavity is formed in the fluid containing box, and a heating assembly and a sterilization assembly are arranged in the containing cavity; the circulation assembly comprises a filter and a liquid pump, the detection assembly comprises a detection element arranged in the containing cavity, and the detection element is connected into the controller and used for obtaining parameter data of liquid circulated by the liquid pump and sending the parameter data to the controller. Aiming at the problem of test result deviation caused by large deviation from actual working conditions during detection of the corrosion resistance of the metal working fluid at present, to-be-tested decayed metal working fluid or standard bacterial colonies is introduced by adopting a liquid containing box, filtered and refluxed after being pumped by a liquid pump, the actual working conditions are simulated, and various parameters of the metal working fluid are measured after a cycle is set. The consistency of the measured parameters and the actual performance is improved, and the parameters can be used for comparing the indexes of the metal working fluid to evaluate the corrosion resistance.

Description

Technical Field

[0001] The utility model relates to the field of processing fluid detection, in particular to a device for testing the anti-corruption property of a water-based metal processing fluid. Background Art

[0002] The production of mechanical parts utilizes a large number of liquid auxiliary materials, commonly known as metalworking fluids. For example, cutting fluids, which provide cooling and lubrication during turning, and cleaning agents, which provide decontamination and rust prevention during cleaning, are two of the most commonly used. With increasing environmental protection requirements and the drive for cost reduction and efficiency improvement, water-based metalworking fluids are gaining widespread adoption due to their advantages. Whether during the laboratory production phase or during engineering testing, the corrosion resistance of water-based metalworking fluids must be evaluated. Metalworking fluids with excellent corrosion resistance can effectively inhibit the growth and reproduction of microorganisms, extending their service life.

[0003] A Chinese patent (publication number CN2263653Y) discloses a microbial aeration culture device. By introducing the same microbial strain into different water-based metalworking fluids, continuously aerating them for five days and then stopping the aeration for two days, the microbial content in the metalworking fluids in different tanks can be evaluated for their anti-corruption properties. Metalworking fluids can also be tested for their corruption resistance using a static test method. A certain amount of metalworking fluid and bacterial strain is added to a conical flask, which is then sealed or unsealed and left at room temperature with daily agitation for 30 minutes. After the test begins, samples are taken daily for appearance, pH, and total bacterial count to evaluate the anti-corruption properties of the test samples. Currently, the aeration method for evaluating the corruption resistance of water-based metalworking fluids is complex and difficult to operate. Furthermore, excessive oxygenation under aeration conditions can hinder the growth of anaerobic bacteria, resulting in poor consistency with actual operating conditions and test results that fail to meet practical requirements. Furthermore, the static test method involves water concentration fluctuations, making it difficult to measure the impact of water concentration changes on microbial growth. When left stationary, floating oil accumulates in the upper layer, hindering the growth of aerobic bacteria, resulting in poor consistency between test data and actual performance. Utility Model Content

[0004] The purpose of the utility model is to provide a water-based metalworking fluid anti-corruption test device to address the defects of the existing technology. The device adopts a liquid tank to introduce the corrupt metalworking fluid to be tested or a standard bacterial colony, which is extracted by a liquid pump and then filtered and refluxed to simulate the actual working conditions. After a set cycle, various parameters of the metalworking fluid are measured to improve the consistency between the measured parameters and the actual performance, and the parameters can be used to compare the indicators of the metalworking fluid to evaluate the anti-corruption performance.

[0005] In order to achieve the above objectives, the following technical solutions are adopted:

[0006] A device for testing the corrosion resistance of a water-based metalworking fluid, comprising:

[0007] The liquid storage box has a cavity formed inside, and a heating component and a sterilizing component are arranged in the cavity;

[0008] The circulation component includes a filter and a liquid pump. A filter plate is provided inside the filter to divide the filter into two cavities. The liquid pump is installed in the liquid storage tank. One end of the water inlet pipe is connected to the liquid pump, and the other end passes through the filter wall and enters the cavity on one side of the filter plate; one end of the water outlet pipe passes through the filter wall and enters the cavity on the other side of the filter plate, and the other end is connected to the cavity to form a water outlet hole.

[0009] The detection component includes a detection element arranged in the cavity, the detection element is connected to the controller, and the detection element is used to obtain parameter data of the liquid circulated by the liquid pump and send it to the controller.

[0010] Furthermore, the liquid storage box includes a component box and an observation box separated by a partition. The observation box is a transparent structure. A component cavity is formed inside the component box, and an observation cavity is formed inside the observation box. The liquid pump is arranged in the component cavity. The component cavity and the observation cavity are connected through the water inlet hole at the bottom of the partition, and the water outlet hole is connected to the observation cavity.

[0011] Furthermore, an opening is provided on the top of the observation box, the opening is equipped with a sealing cover for sealing, and the sealing cover is provided with a handle.

[0012] Furthermore, the heating component and the sterilization component are respectively installed in the element cavity, and at least one of the detection elements included in the detection component is a pH meter, which is installed in the element cavity.

[0013] Furthermore, at least one of the detection elements included in the detection assembly is a concentration meter, and the concentration meter is installed in the water outlet pipe.

[0014] Furthermore, a support plate is installed in the cavity, the support plate is a orifice plate, the liquid pump is installed on the orifice plate, and the inlet end of the liquid pump is located below the liquid level of the liquid stored in the cavity.

[0015] Furthermore, the liquid storage box is provided with a drain port communicating with the cavity, and the drain port is equipped with a valve.

[0016] Furthermore, the controller includes a processor, a switch, a display screen and a control panel. The display screen, the control panel and the switch are respectively mounted on the side wall of the liquid storage box and isolated from the cavity. The display screen, the control panel and the switch are respectively connected to the processor.

[0017] Furthermore, the filter is a filter box, and the filter plate is installed in the filter box to separate the cavities distributed up and down.

[0018] Furthermore, the water inlet pipe forms a curved pipe section in the cavity, and a drip hole is opened on the curved pipe section.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are:

[0020] (1) In order to solve the problem that the test results of the current anti-corruption performance of metalworking fluids deviate greatly from the actual working conditions, a liquid tank is used to introduce the corrosive metalworking fluids or standard bacteria to be tested. The fluids are extracted by a liquid pump, filtered and refluxed to simulate the actual working conditions. After the cycle is set, various parameters of the metalworking fluids are measured to improve the consistency between the measured parameters and the actual performance. The parameters can also be used to compare the indicators of the metalworking fluids to evaluate the anti-corruption performance.

[0021] (2) The pH value and concentration parameters of the test liquid in the liquid tank are measured and recorded in real time, and sent to the display through the controller for display, so that the changes of indicators can be monitored in real time.

[0022] (3) Based on the circulating filtration method, the field conditions are simulated. The test samples, inoculum and additional nutrients are under continuous or intermittent mechanical mixing conditions, with good uniformity, high consistency with the actual field conditions, and high accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 This is a schematic diagram of a device for testing the corrosion resistance of a water-based metalworking fluid in an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the liquid pump, water inlet pipe and water outlet pipe in an embodiment of the present utility model.

[0026] Figure 3 Schematic diagram of the water outlet and water inlet in an embodiment of the present utility model.

[0027] Figure 4 Schematic diagram of the support plate and liquid pump in an embodiment of the present utility model.

[0028] Figure 5 This is a schematic diagram of the internal structure of the filter in an embodiment of the present utility model.

[0029] Figure 6 This is a test flow chart of the water-based metalworking fluid anti-corrosion testing device in an embodiment of the present utility model.

[0030] In the figure, 1. liquid tank, 2. switch, 3. control panel, 4. display screen, 5. filter, 6. handle, 7. sealing cover, 8. drain outlet, 9. valve, 10. controller, 11. pH meter, 12. liquid pump, 13. heating component, 14. concentration meter, 15. sterilization component, 16. switching power supply, 17. water inlet, 18. water inlet pipe, 19. water outlet pipe, 20. water outlet, 21. support plate, 22. filter plate, 23. drip hole. DETAILED DESCRIPTION

[0031] In a typical embodiment of the present invention, Figures 1-6 As shown in the figure, a test device for the anti-corrosion property of water-based metalworking fluid is proposed.

[0032] Traditional testing methods cannot fully simulate the actual operating environment of cutting fluids, such as changes in parameters like temperature, flow rate, and pressure, resulting in deviations between test results and actual performance. Based on this, this embodiment provides a water-based metalworking fluid anti-corruption test device. The device uses a liquid reservoir 1 to introduce the corrupted metalworking fluid or a standard bacterial colony to be tested. This fluid is then pumped through a liquid pump 12, filtered, and recirculated. This simulates the cutting fluid under high temperature and dynamic circulation conditions, measures various parameters of the metalworking fluid, and improves test accuracy.

[0033] like Figure 1 As shown, the water-based metalworking fluid anti-corruption test device primarily comprises a liquid tank 1, a circulation assembly, and a detection assembly. Liquid tank 1 forms a chamber for holding the metalworking fluid or standard bacterial solution to be tested. The chamber houses a heating assembly 13 and a sterilization assembly 15. Heating assembly 13 heats the tested liquid within tank 1, while sterilization assembly 15 sterilizes the tested liquid.

[0034] The heating assembly 13 simulates the temperature rise of the cutting fluid caused by friction and machine operation during metalworking, thereby more realistically reflecting the anti-corrosion performance of the metalworking fluid in high-temperature environments. Sterilizing the chamber and the liquid within it before testing ensures consistent initial test conditions, avoids interference from the initial bacterial flora, and improves test accuracy.

[0035] like Figure 2 and Figure 3As shown, the circulation assembly includes a filter 5 and a liquid pump 12. A filter plate 22 is installed within the filter 5, dividing the filter 5 into two chambers. The liquid pump 12 is mounted within the liquid storage tank 1. An inlet pipe 18 connects the liquid pump 12 to the chamber on one side of the filter 5. An outlet pipe 19 extends from the filter 5 wall to the chamber on the other side of the filter plate 22, and from the other end to the chamber, forming a water outlet 20. The liquid pump 12 draws the liquid from the chamber into the filter 5. After being filtered by the filter plate 22, the liquid is returned to the chamber through the outlet pipe 19.

[0036] The filter plate 22 inside the filter 5 effectively removes impurities and microorganisms generated during the circulation process, maintaining the cleanliness of the test liquid and preventing the accumulation of impurities from affecting the test results. At the same time, the filter plate 22 can also filter out large particles of cutting residues, making the circulation smoother and reducing circulation problems caused by blockage.

[0037] The liquid pump 12 can realize the forced circulation of the liquid, simulate the flow state of the cutting fluid in the machine tool under actual working conditions, ensure that the liquid is always in a dynamic state during the test, and improve the simulation authenticity of the test.

[0038] The detection assembly includes detection elements arranged in the cavity, such as a temperature sensor, a pH meter 11, a conductivity sensor, a concentration meter, etc. These detection elements can be connected to the controller 10 separately. The concentration meter 14 is installed in the outlet pipe 19 to measure the concentration of the solution and record it in real time. By integrating multiple sensors, key parameters such as the temperature, pH, and conductivity of the circulating liquid can be comprehensively monitored. Changes in these parameters directly reflect the anti-corruption performance and stability of the metalworking fluid. Different detection elements can reflect changes in the performance of the cutting fluid in different aspects, which helps to accurately evaluate its anti-corruption performance.

[0039] The controller 10 receives and processes sensor data, displays and records test results in real time for subsequent analysis and comparison. It can also set parameters such as cycle times and alarm thresholds to increase the automation and flexibility of the test.

[0040] The water-based metalworking fluid anti-corruption test device, through the collaborative operation of a fluid reservoir (1), a circulation component, and a detection component, effectively simulates the flow and temperature fluctuations of cutting fluid under actual working conditions. Multiple sensors monitor key parameters of the circulating fluid in real time. This not only improves test accuracy and reliability but also comprehensively assesses the anti-corruption performance of metalworking fluids, providing strong support for product development and improvement. Furthermore, the introduction of a filter (5) eliminates the impact of impurities and microorganisms on test results, ensuring test purity and consistency.

[0041] like Figure 1 and Figure 4As shown, the liquid storage box 1 is divided into a component box and an observation box by a partition to achieve zoning management. A component cavity is formed inside the component box, and an observation cavity is formed inside the observation box. The liquid pump is arranged in the component cavity. The component cavity and the observation cavity are connected through the water inlet hole 17 at the bottom of the partition, which enables the liquid in the observation cavity to flow into the component cavity. The liquid supply pump 12 extracts and circulates, and the water outlet hole 20 is connected to the observation cavity to output the filtered liquid to the observation box for observation. The component box is used to install the liquid pump 12, heating component 13, sterilization component 15 and detection components, etc., to ensure the compactness of the equipment and the convenience of maintenance. The observation box is a transparent structure, which is convenient for observing the state changes of the test liquid, such as color, turbidity, etc., and improves the intuitiveness of the test.

[0042] The transparent design of the observation box allows testers to observe the test process without opening the box, reducing the risk of contamination and improving test safety.

[0043] like Figure 1 As shown, the top of the observation box has an opening, which is sealed with a sealing cover 7. Sealing cover 7 is equipped with a handle 6. Sealing cover 7 ensures the box's tightness during testing, reduces moisture evaporation, prevents the ingress of external contaminants, and ensures test accuracy. Handle 6 facilitates the operator's opening and closing of sealing cover 7, improving test efficiency.

[0044] like Figure 2 As shown, the heating assembly 13 and sterilization assembly 15 are separately installed within the component cavity. This arrangement facilitates centralized control and management, improving the integrity of the device and ease of operation. The heating assembly 13 can utilize heating wires, steam heating tubes, or other similar devices, while the sterilization assembly 15 can utilize an ultraviolet lamp or other similar devices. While the heating assembly 13 and sterilization assembly 15 can each act on the test liquid, their location within the component cavity isolates them from the operator, enhancing safety during the test process.

[0045] like Figure 4 As shown, a support plate 21 is installed within the chamber, and a liquid pump 12 is mounted on the orifice plate. The inlet of the liquid pump 12 is located below the liquid level in the chamber. The support plate 21 provides stable support for the liquid pump 12, preventing it from shaking and vibrating during operation and ensuring test stability. The inlet of the liquid pump 12 is located below the liquid level, ensuring that the liquid is effectively drawn in and circulated, improving test efficiency and accuracy.

[0046] like Figure 1As shown, the liquid storage tank 1 has a drain port 8 connected to the chamber, which is equipped with a valve 9. This port and valve 9 facilitate the convenient drainage of the test liquid after testing, facilitating cleaning and replacement of the test liquid. Valve 9 remains closed when drainage is not required, preventing leakage and waste of the test liquid. Valve 9 also controls the flow rate of the drained liquid.

[0047] like Figure 1 and Figure 4 As shown, controller 10 includes a processor, switch 2, display 4, and control panel 3. It is mounted on the side wall of liquid tank 1, isolated from the chamber. Controller 10 integrates multiple control and display components, with the display utilizing a touch panel. This enables centralized control and management of the testing process, improving the automation and convenience of testing. Mounting controller 10 on the side wall of liquid tank 1, isolated from the chamber, prevents electrical failures and safety hazards caused by liquid leakage or splashing.

[0048] Controller 10 is also connected to a switching power supply 16, which supplies power to controller 10 and other electrical components. Multiple switches 2 are located on the side wall of liquid tank 1, including a power switch, a heating switch, a power switch, and a switch for sterilization component 15. Switching power supply 16 connects to an external 220V power source and converts it to a voltage suitable for the entire device. The processor controls the system and processes data. Display screen 4 displays and selects data. Control panel 3 is used to enter and modify data. The power switch, heating switch, power switch, and sterilization component 15 switches control the opening and closing of various components.

[0049] The filter 5 is a box-like filter housing. A filter plate 22 is installed within the housing to separate the upper and lower cavities. The filter housing and filter plate 22 cooperate to allow liquid flowing into the filter 5 through the water inlet pipe 18 to flow toward the filter plate 22. As the liquid passes through the filter plate 22, it is able to fully contact the filter plate 22 and the filter medium disposed thereon, thereby improving filtration efficiency and effectiveness. In this embodiment, the filter medium can be filter cloth, filter cotton, or the like, and the filter plate 22 supports the filter medium.

[0050] The water inlet pipe 18 forms a curved pipe section in the cavity and is provided with drip holes 23, so that the liquid can be evenly distributed and drip slowly, maintaining the stability of the water channel and avoiding the problem of insufficient filtration caused by excessive flow rate.

[0051] like Figure 6As shown, when in use, first, place filter cloth or filter cotton in the filter 5, turn on the switch power 16, open the sealing cover 7 through the handle 6, prepare 16L of dilution liquid of predetermined concentration in the liquid tank 1, and the water quality can be selected by yourself, such as pure water, tap water or artificially prepared hard water of different PPM; add 1kg of dry cast iron chips, 0.5kg of dry aluminum chips, 0.5kg of dry copper chips and 0.2L of hydraulic oil to the dilution; turn on the heating switch, and control the heating component 13 to the set temperature through the display screen 4 and the control panel 3; turn on the liquid pump 12 switch, and control the operating parameters of the liquid pump 12 through the display screen 4 and the control panel 3 to make the liquid pump 12 run at the set flow rate; take liquid to measure relevant indicators; slowly introduce 0.5L of corruption medium (total bacterial count ≥10 9 CFU / mL) or standard colonies, mark the liquid level line; thereafter, take liquid every day in the first week to measure and record relevant indicators, take liquid every two days in the second week to measure and record relevant indicators, take liquid every three days in the third week to measure and record relevant indicators, take liquid every four days in the fourth week to measure and record relevant indicators. The liquid level must be kept consistent throughout the test to avoid concentration changes caused by water evaporation that may affect the test results.

[0052] After use, clean the device. Turn off heating assembly 13 and liquid pump 12, open valve 9 to drain the liquid in liquid tank 1 through drain 8, remove the filter cloth or filter cotton from filter 5, and close valve 9. Prepare 16L of 5% detergent, turn on heating assembly 13 and liquid pump 12, and turn on sterilization assembly 15. After liquid pump 12 has been running for 1 hour, open valve 9 to drain the liquid in liquid tank 1 through drain 8, turn off heating assembly 13, liquid pump 12, and sterilization assembly 15, and turn off power switch 16.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water-based metalworking fluid anti-corrosion testing device, characterized in that: include: The liquid storage box has a cavity formed inside, and a heating component and a sterilizing component are arranged in the cavity; The circulation component includes a filter and a liquid pump. A filter plate is provided inside the filter to divide the filter into two cavities. The liquid pump is installed in the liquid storage tank. One end of the water inlet pipe is connected to the liquid pump, and the other end passes through the filter wall and enters the cavity on one side of the filter plate; one end of the water outlet pipe passes through the filter wall and enters the cavity on the other side of the filter plate, and the other end is connected to the cavity to form a water outlet hole. The detection component includes a detection element arranged in the cavity, the detection element is connected to the controller, and the detection element is used to obtain parameter data of the liquid circulated by the liquid pump and send it to the controller.

2. The water-based metalworking fluid anti-corrosion testing device according to claim 1, characterized in that: The liquid storage box includes a component box and an observation box separated by a partition. The observation box is a transparent structure. A component cavity is formed inside the component box, and an observation cavity is formed inside the observation box. The liquid pump is arranged in the component cavity. The component cavity and the observation cavity are connected through the water inlet hole at the bottom of the partition, and the water outlet hole is connected to the observation cavity.

3. The water-based metalworking fluid anti-corrosion testing device according to claim 2, characterized in that: The top of the observation box is provided with an opening, the opening is matched with a sealing cover for sealing, and the sealing cover is provided with a handle.

4. The water-based metalworking fluid anti-corrosion testing device according to claim 2 or 3, characterized in that: The heating component and the sterilization component are respectively installed in the component cavity. At least one of the detection components included in the detection component is a pH meter, and the pH meter is installed in the component cavity.

5. The water-based metalworking fluid anti-corrosion testing device according to claim 1, characterized in that: At least one of the detection elements included in the detection assembly is a concentration meter, and the concentration meter is installed in the water outlet pipe.

6. The water-based metalworking fluid anti-corrosion testing device according to claim 1 or 5, characterized in that: A support plate is installed in the cavity, the support plate is a hole plate, the liquid pump is installed on the hole plate, and the inlet end of the liquid pump is located below the liquid level of the liquid stored in the cavity.

7. The water-based metalworking fluid anti-corrosion testing device according to claim 1 or 5, characterized in that: The liquid storage box is provided with a drain port communicating with the cavity, and the drain port is matched with a valve.

8. The water-based metalworking fluid anti-corrosion testing device according to claim 1, characterized in that: The controller includes a processor, a switch, a display screen and a control panel. The display screen, the control panel and the switch are respectively mounted on the side wall of the liquid storage box and isolated from the cavity. The display screen, the control panel and the switch are respectively connected to the processor.

9. The water-based metalworking fluid anti-corrosion testing device according to claim 1, characterized in that: The filter is a filter box, and the filter plate is installed in the filter box to separate the cavities distributed up and down.

10. The water-based metalworking fluid anti-corrosion testing device according to claim 1 or 9, characterized in that: The water inlet pipe forms a curved pipe section in the cavity, and a drip hole is opened on the curved pipe section.

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