Cutting fluid residue filtering tank

Abstract

The utility model discloses a cutting fluid residue filtering tank which aims to overcome the defect that an existing cutting fluid treatment device cannot solve the contradiction between defoaming and precipitation. The filter residue tank comprises a filter residue tank body, a fine filtration module and a defoaming module, the fine filtration module comprises a water collecting pipe arranged at the top of the filter residue tank body and a plurality of filter membrane wires communicated with the water collecting pipe, the filter residue tank body is a closed tank body, and the defoaming module comprises a negative pressure device, a negative pressure pipe and a bubble breaking net. The negative pressure pipe is communicated with the negative pressure device and the top of the residue filtering tank body, the foam breaking net is arranged at the set height position of the preset liquid level of the residue filtering tank body, and the negative pressure device enables foam in the residue filtering tank body to expand and break automatically or break when meeting the foam breaking net by generating negative pressure. A negative pressure defoaming mode is matched with a filter membrane structure, so that two filtering modes of natural gravity precipitation and filter membrane filtration are realized, and defoaming and precipitation are solved through negative pressure defoaming.

Description

Technical Field

[0001] This utility model relates to a cutting fluid treatment device, and more specifically, to a cutting fluid filter tank. Background Technology

[0002] Cutting fluid is used to reduce the temperature of the cutting tool and workpiece during machining, and to maintain the hardness of the tool and hardware. The cutting fluid is collected in a dedicated channel on the lathe and treated by a specialized cutting fluid treatment system. Solid particles are filtered out, and organic matter is treated through biochemical or chemical processes for reuse or detoxification.

[0003] Organic matter in cutting fluid can produce foam, and some metal debris can adhere to this foam, affecting the separation of metal debris from the cutting fluid. When microbial treatment is used, the foam produced by the microorganisms can sometimes overflow the treatment equipment and flow back into the machine tool through the pipeline, causing contamination inside the machine tool.

[0004] Foam treatment methods include using defoamers and physical stirring, but all of these methods have certain shortcomings. Adding defoamers affects the composition of the cutting fluid, physical stirring affects natural sedimentation, and most other defoaming methods cause water disturbance, affecting sedimentation.

[0005] This application aims to provide a cutting fluid filter tank to solve the above-mentioned problems and overcome the aforementioned deficiencies. Utility Model Content

[0006] This invention overcomes the shortcomings of existing cutting fluid treatment devices that cannot resolve the contradiction between defoaming and sedimentation, and provides a cutting fluid filter tank that uses a combination of negative pressure defoaming and filter membrane structure to achieve both natural gravity sedimentation and filter membrane filtration. The negative pressure defoaming method solves the problems of defoaming and sedimentation.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A cutting fluid filter tank includes a filter tank body, a fine filtration module, and a defoaming module. The fine filtration module includes a water collection pipe disposed at the top of the filter tank body and a plurality of filter membrane fibers connected to the water collection pipe. The filter tank body is a closed tank. The defoaming module includes a negative pressure device, a negative pressure pipe, and a defoaming net. The negative pressure pipe connects the negative pressure device and the top of the filter tank body. The defoaming net is disposed at a predetermined height position of the preset liquid level in the filter tank body. The negative pressure device generates negative pressure to cause the foam in the filter tank body to expand and rupture on its own or to rupture upon contact with the defoaming net.

[0009] This application employs gravity sedimentation combined with membrane filtration to filter cutting fluid. It also utilizes an defoaming module to eliminate foam on the cutting fluid surface, preventing microscopic metal debris from adhering to the foam and affecting the sedimentation effect. The membrane uses filter fibers, and a negative pressure is created through a water collection pipe connected to the filter fibers. This draws the cutting fluid from the filter tank into the inner side of the filter fibers, where it is collected and discharged outwards. The use of filter fibers effectively prevents microscopic metal debris from entering the water collection pipe along with the cutting fluid.

[0010] This application can also introduce corresponding bacterial strains based on the specific composition of the organic matter in the cutting fluid, and treat the organic matter through biochemical reactions of the bacterial strains during the natural sedimentation period. Foam will also be generated during the biochemical reaction, and the overflow of this foam can contaminate the bacterial strains, affecting the settling of micro-metal debris.

[0011] In summary, in addition to the foam generated by the cutting fluid due to mechanical movement, foam is also generated due to biochemical reactions. The foam affects the sedimentation of micro debris. Therefore, this application provides a defoaming module for defoaming.

[0012] The defoaming module uses negative pressure to increase the foam. When the foam reaches its maximum size, it will burst. It also uses a defoaming net to break up the foam that has reached the height of the defoaming net, so that the micro metal fragments attached to the foam fall to the liquid surface and settle.

[0013] Preferably, the filter tank body is also equipped with a defoaming electrode, which is electrically connected to a negative pressure device via a controller. The defoaming electrode is a common electrochemical sensor technology used to detect the presence of bubbles in chemical processes containing a large amount of foam. Its working principle is based on the Faraday electrolysis principle, utilizing electrolysis principles to detect the presence of bubbles. When the defoaming electrode senses the presence of foam, the controller controls the negative pressure device to generate negative pressure for defoaming.

[0014] Preferably, the negative pressure device is a vacuum pump, and the top of the filter tank is also equipped with a vent valve to control the air inlet and outlet. This vent valve is connected to the vacuum pump via a controller. While filtering and defoaming, the filter tank also utilizes its natural settling time to allow microorganisms to treat organic matter in the cutting fluid. If the microorganisms are aerobic, defoaming can be achieved through the negative pressure device in conjunction with the vent valve. During defoaming, the vent valve is closed, and the filter tank is in a sealed state. After defoaming by the vacuum pump, the vent valve opens, restoring the air pressure inside the filter tank to normal. This not only helps the vacuum pump return to normal operation but also supplies the filter tank with the necessary air, maintaining the oxygen content inside the filter tank.

[0015] Preferably, the negative pressure device includes a linear motor and a piston. The piston is connected to a negative pressure pipe, and the linear motor generates negative pressure by pushing and pulling the piston. When the piston retracts, the space between the negative pressure pipe and the upper part of the liquid surface in the filter cake tank increases, the air pressure decreases, and the air pressure inside the foam is greater than that outside, causing the foam to expand. When the bacteria inside the filter cake tank are anaerobic bacteria, the biochemical reaction is carried out using these bacteria. Through the linear motor and piston, the low oxygen content of the filter cake tank can be maintained without introducing external gas.

[0016] Preferably, a water storage pipe is also provided between the piston and the negative pressure pipe. The water storage pipe is U-shaped and contains liquid, which separates the piston from the filter tank body. The water storage pipe isolates foam, preventing foam from being sucked into the piston and causing contamination due to the negative pressure.

[0017] Preferably, one end of the filter membrane filament is connected to the water collection pipe, while the other end is closed. The filter membrane filament is suspended on the water collection pipe and immersed in the liquid surface. The filter membrane filament is flexible and can swing freely during operation, which can avoid the adsorption of metal debris and reduce damage to the filter membrane filament caused by the relative movement between the metal and the filter membrane filament.

[0018] Preferably, a discharge port is provided at or near the bottom of the filter tank body. The discharge port is connected to a solenoid valve, which can adjust the opening and closing of the discharge port. The discharge port is configured to discharge sediment. By discharging the sediment accumulated at the bottom through the discharge port, excessive accumulation of sediment is reduced.

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

[0020] (1) The separation of filter residue and liquid in cutting fluid is achieved by using a combination of gravity sedimentation and filter membrane filtration in a filter residue tank;

[0021] (2) Utilize the sedimentation time to simultaneously perform biochemical treatment with microbial strains, thereby reducing the treatment residence time;

[0022] (3) Defoaming is achieved by generating negative pressure through a negative pressure device. It has the advantages of simple structure and good defoaming effect. Compared with mechanical treatment, it will not affect the normal gravity sedimentation process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the filter cake tank body according to one embodiment;

[0024] Figure 2 This is a schematic diagram of the filter cake tank body according to another embodiment;

[0025] Figure 3 This is a schematic diagram of the fine filtration module;

[0026] Figure 4 It is an internal schematic diagram of the filter residue tank;

[0027] In the figure:

[0028] Filter residue tank body 1, water collecting pipe 2, main pipe 3, branch pipe 4, filter membrane filaments 5, negative pressure pipe 6, bubble-breaking net 7, defoaming electrode 8, grounding post 9, mounting bracket 10, liquid level sensor 11, vacuum pump 12, linear motor 13, piston 14, water storage pipe 15, slag discharge port 16, external water pipe 17, ventilation valve 18. Specific embodiments

[0029] The present disclosure will be further described below in conjunction with the drawings and embodiments.

[0030] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present disclosure and do not specifically refer to any component or element of the present disclosure. It should not be construed as a limitation to the present disclosure.

[0033] In the present disclosure, terms such as "fixed connection", "connected", "joined" should be understood in a broad sense, indicating that it can be a fixed connection, an integral connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the relevant scientific research or technology in this field, the specific meaning of the above terms in the present disclosure can be determined according to the specific situation and should not be construed as a limitation to the present disclosure.

[0034] Embodiment:

[0035] Refer Figure 1 and Figure 2As shown in the figure, a cutting fluid filter residue tank includes a filter residue tank body 1, a fine filtration module and an anti-foaming module. The filter residue tank body 1 is a tank that can be opened. Here, "can be opened" means that the top cover and the cylinder body with an open top and a closed bottom are connected in a detachable manner, and the closure of the tank body is achieved by means such as hinged connection and threaded connection. The filter residue tank body 1 is connected to the cutting fluid to be treated through an external water pipe 17. Among them, the external water pipe 17 is connected to a preset liquid level near the filter residue tank body 1 to reduce the disturbance to the filter residue.

[0036] The fine filtration module includes a water collecting pipe 2 arranged at the top of the filter residue tank body 1 and a plurality of filter membrane filaments 5 communicated with the water collecting pipe 2. One end of the filter membrane filament 5 is communicated with the water collecting pipe 2, and the other end is in a closed state. The filter membrane filament 5 is suspended and connected to the water collecting pipe 2 and immersed in the liquid level. The filter membrane filament 5 is in a flexible state, and the filter membrane filament 5 swings freely in the working state, which can avoid the adsorption of metal debris and reduce the damage to the filter membrane filament 5 caused by the relative movement between the metal and the filter membrane filament 5. By generating a negative pressure inside the water collecting pipe 2, a hydraulic pressure difference is generated inside and outside the filter membrane filament 5. Through the hydraulic pressure difference, the cutting fluid is forced to pass through the filter membrane and enter the inside of the filter membrane filament 5, and the solids with a particle size greater than the passing range of the filter membrane filament 5 are isolated outside. In some embodiments, by controlling the length of the filter membrane filament 5, the filter membrane filament 5 does not touch the bottom of the filter residue tank body 1, so as to avoid disturbing the precipitated filter residue.

[0037] Refer to Figure 3 As shown in the figure, among them, the water collecting pipe 2 includes a main pipe 3 passing through the filter residue tank body 1 in the height direction and branch pipes 4 arranged in a mesh shape in the transverse or longitudinal direction. Referring to the shape of the filter residue tank body 1 in this application, each branch pipe 4 is arranged in a circular shape and communicated. The bottom of each branch pipe 4 is communicated with a filter membrane filament 5.

[0038] Refer to Figure 4As shown, the defoaming module includes a negative pressure device, a negative pressure pipe 6, and a bubble-breaking net 7. The negative pressure pipe 6 is connected to the negative pressure device and the top of the filter residue tank body 1. The bubble-breaking net 7 is arranged at the set height position of the preset liquid level in the filter residue tank body 1. The negative pressure device causes the foam in the filter residue tank body 1 to expand and burst on its own or burst when encountering the bubble-breaking net 7 by generating negative pressure. The filter residue tank body 1 is also provided with a defoaming electrode 8, and the defoaming electrode 8 is electrically connected to the negative pressure device through a controller. The defoaming electrode 8 is a common electrochemistry sensor technology used to detect the presence of bubbles in a chemical process containing a large amount of foam. Its working principle is based on the Faraday electrolysis reaction principle, using the electrolysis principle to detect the presence of bubbles. When the defoaming electrode 8 senses the presence of foam, it controls the negative pressure device to generate negative pressure for defoaming through the controller. The defoaming electrode 8 is obtained through outsourcing. The defoaming electrode 8 penetrates into the filter residue tank body 1 from the top and is arranged above the preset liquid level, and a grounding post 9 is arranged at the top of the filter residue tank body 1. The grounding post 9 and the defoaming electrode 8 are connected to the controller. A liquid level sensor 11 is arranged inside the filter residue tank body 1, and the liquid level sensor 11 is electrically connected to the controller. The controller controls the electromagnetic valves of the external water pipe 17 and the slag discharge port 16 according to the liquid level sensor 11 to control the liquid level. By strictly controlling the liquid level, sufficient space is provided for the expansion of foam.

[0039] An annular stand 10 is arranged above the liquid level in the filter residue tank body 1, and the bubble-breaking net 7 is placed on the stand 10.

[0040] See Figure 1 As shown, in some embodiments, the negative pressure device is a vacuum pump 12. A ventilation valve 18 for controlling the air inlet and outlet is also arranged at the top of the filter residue tank body 1. The ventilation valve 18 is communicatively connected to the vacuum pump 12 through a controller. While the filter residue tank body 1 is filtering residue and defoaming, it can also treat the organic matter in the cutting fluid through microorganisms. When the microorganism is an aerobic strain, defoaming can be carried out by the cooperation of the negative pressure device and the ventilation valve 18. During defoaming, the ventilation valve 18 is closed, and the filter residue tank body 1 is in a closed state. After defoaming by the vacuum pump 12, the ventilation valve 18 is opened, and the air pressure in the filter residue tank body 1 returns to normal, which not only helps the vacuum pump 12 return to the normal state but also supplies corresponding air to the filter residue tank body 1 to maintain the oxygen content inside the filter residue tank body 1.

[0041] See Figure 2As shown, in some embodiments, the negative pressure device includes a linear motor 13 and a piston 14. The piston 14 is connected to the negative pressure pipe 6, and the linear motor 13 generates negative pressure by pushing and pulling the piston 14. When the piston 14 retracts, the space between the negative pressure pipe 6 and the upper part of the liquid surface of the filter tank body 1 increases, the air pressure decreases, and the air pressure inside the foam is greater than that outside, causing the foam to expand. When the bacteria inside the filter tank body 1 are anaerobic bacteria, the biochemical reaction is carried out using the bacteria. Through the linear motor 13 and the piston 14, the low oxygen content of the filter tank body 1 can be maintained without introducing external gas.

[0042] A water storage pipe 15, U-shaped in shape, is provided between the piston 14 and the negative pressure pipe 6. The water storage pipe 15 contains liquid that separates the piston 14 from the filter tank body 1. The water storage pipe 15 isolates foam, preventing it from being drawn into the piston 14 and causing contamination due to the negative pressure. Notably, the U-shape of the water storage pipe 15 points upwards.

[0043] A discharge port 16 is provided at or near the bottom of the filter tank body 1. The discharge port 16 is connected to a solenoid valve, which can adjust the opening and closing of the discharge port 16. The discharge port 16 is configured to discharge sediment. The discharge port 16 discharges the sediment that has accumulated at the bottom, reducing excessive accumulation of sediment.

[0044] This application employs gravity sedimentation combined with membrane filtration to filter the cutting fluid. It also utilizes an defoaming module to eliminate foam on the surface of the cutting fluid, preventing microscopic metal debris from adhering to the foam and affecting the sedimentation effect. The membrane uses filter wires 5 for filtration. A negative pressure is created through a water collection pipe 2 connected to the filter wires 5, drawing the cutting fluid from the filter tank body 1 into the inner side of the filter wires 5 and collecting it in the water collection pipe 2 for discharge. The use of filter wires 5 effectively prevents microscopic metal debris from entering the water collection pipe 2 along with the cutting fluid.

[0045] This application can also introduce corresponding bacterial strains based on the specific composition of the organic matter in the cutting fluid, and treat the organic matter through biochemical reactions of the bacterial strains during the natural sedimentation period. Foam will also be generated during the biochemical reaction, and the overflow of this foam can contaminate the bacterial strains, affecting the settling of micro-metal debris.

[0046] In summary, in addition to the foam generated by the cutting fluid due to mechanical movement, foam is also generated due to biochemical reactions. The foam affects the sedimentation of micro debris. Therefore, this application provides a defoaming module for defoaming.

[0047] The defoaming module uses negative pressure to increase the foam. When the foam reaches its maximum size, it will burst. It also breaks the foam that has reached the height of the defoaming net 7, so that the micro metal fragments attached to the foam fall to the liquid surface and settle.

[0048] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A cutting fluid filter tank, characterized in that, The system includes a filter cake tank body, a fine filtration module, and a defoaming module. The fine filtration module includes a water collection pipe located at the top of the filter cake tank body and several filter membrane fibers connected to the water collection pipe. The filter cake tank body is a closed tank. The defoaming module includes a negative pressure device, a negative pressure pipe, and a defoaming net. The negative pressure pipe connects the negative pressure device to the top of the filter cake tank body. The defoaming net is located at a preset height of the preset liquid level in the filter cake tank body. The negative pressure device generates negative pressure to cause the foam in the filter cake tank body to expand and rupture on its own or to rupture upon contact with the defoaming net.

2. A cutting fluid filter tank according to claim 1, characterized in that, The filter tank body is also equipped with a defoaming electrode, which is electrically connected to a negative pressure device via a controller.

3. A cutting fluid filter tank according to claim 1, characterized in that, The negative pressure device is a vacuum pump, and the top of the filter tank body is also equipped with a vent valve to control the air in and out. The vent valve is connected to the vacuum pump through a controller.

4. A cutting fluid filter tank according to claim 1, characterized in that, The negative pressure device includes a linear motor and a piston. The piston is connected to a negative pressure pipe, and the linear motor generates negative pressure by pushing and pulling the piston.

5. A cutting fluid filter tank according to claim 4, characterized in that, A water storage pipe is also provided between the piston and the negative pressure pipe. The water storage pipe is U-shaped and contains liquid, which separates the piston from the filter tank body.

6. A cutting fluid filter tank according to claim 1, characterized in that, One end of the filter membrane filament is connected to the water collection pipe, and the other end is in a closed state. The filter membrane filament is suspended on the water collection pipe and immersed in the liquid surface.

7. A cutting fluid filter tank according to any one of claims 1 to 6, characterized in that, The filter tank body is provided with a slag discharge port at or near the bottom. The slag discharge port is connected to a solenoid valve, which can adjust the opening and closing of the slag discharge port. The slag discharge port is configured to discharge sediment.

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