Water-based semi-synthetic cutting fluid filtering equipment

Abstract

The utility model belongs to the technical field of filtering equipment, and particularly relates to water-based semi-synthetic cutting fluid filtering equipment. Comprising a box body internally provided with a storage cavity for containing to-be-filtered cutting fluid, a filtering assembly installed in the box body, conveying equipment used for conveying the cutting fluid in the storage cavity to the filtering assembly for filtering treatment, and a recycling box used for collecting the filtered cutting fluid. The cutting fluid recycling device further comprises a controller, a power assembly installed in the box body and a first liquid level sensor installed on the recycling box, the power assembly is used for driving the filtering assembly to move, the first liquid level sensor is used for monitoring the liquid level of the cutting fluid in the recycling box, and the liquid level sensor provides a liquid level signal of the cutting fluid in the recycling box for the controller. The controller controls operation of the power assembly according to the liquid level signal so as to switch the filtering area of the filtering assembly, so that long-time work of a single area of the filtering assembly is avoided, the risks of abrasion and blockage are reduced, and the filtering area of the filtering plate can be fully utilized.

Description

Technical Field

[0001] This utility model belongs to the field of filtration equipment technology, specifically relating to a water-based semi-synthetic cutting fluid filtration device. Background Technology

[0002] In modern machining, cutting fluid, as an indispensable auxiliary material, plays a crucial role in cooling, lubrication, cleaning, and rust prevention, directly affecting machining quality, tool life, and production efficiency. With the continuous advancement of machining technology and increasingly demanding machining requirements, the consumption of cutting fluid is also steadily increasing. However, during use, cutting fluid inevitably mixes with impurities such as metal shavings, abrasive particles, and oil. These impurities not only reduce the performance of the cutting fluid and shorten its service life but may also damage machining equipment and workpieces, affecting machining accuracy and surface quality. Therefore, filtration of the cutting fluid is particularly important to ensure its performance and the smooth operation of the machining process.

[0003] Traditional cutting fluid filtration equipment typically uses a filter screen as the filtration medium. A pump delivers the cutting fluid to the screen for filtration, and impurities larger than the filter pore size are blocked. However, traditional filter design has some significant shortcomings. Specifically, the position of the filter screen and the piping supplying the cutting fluid are usually fixed. The cutting fluid is generally delivered to the center of the filter screen for filtration. This method leads to impurities accumulating on the filter screen surface until a certain thickness is reached, at which point it is necessary to switch to another filter screen for further filtration. During this process, other areas of the filter screen outside the center may remain unused for extended periods, resulting in wasted filtration resources.

[0004] Meanwhile, due to uneven use of the filter screen, some areas may wear out or become clogged prematurely, leading to a decrease in filtration efficiency and even affecting the normal operation of the entire filtration equipment. Utility Model Content

[0005] To address the above problems, the purpose of this utility model is to provide a water-based semi-synthetic cutting fluid filtration device to solve the problems mentioned in the background art.

[0006] This utility model provides an aqueous semi-synthetic cutting fluid filtration device, including a housing with an internal storage chamber for containing the cutting fluid to be filtered, a filter assembly installed inside the housing, a conveying device for transporting the cutting fluid in the storage chamber to the filter assembly for filtration, and a recovery tank for collecting the filtered cutting fluid. It also includes a controller, a power assembly installed inside the housing, and a level sensor installed on the recovery tank. The power assembly drives the filter assembly to move, and the level sensor monitors the level of the cutting fluid in the recovery tank. The output of the level sensor is connected to the signal input of the controller to provide the controller with a level signal of the cutting fluid in the recovery tank. The controller controls the operation of the power assembly based on the level signal to switch the filtration zone of the filter assembly.

[0007] Preferably, the filter assembly includes a first filter plate and a second filter plate; the first filter plate has a coarse pore size for preliminary filtration of large particulate impurities in the cutting fluid; the second filter plate is located below the first filter plate and has a fine pore size for further filtration of fine particles in the cutting fluid; the ends of the first and second filter plates away from the power assembly extend to the outside of the housing and are slidably connected to the housing so as to move under the drive of the power assembly.

[0008] Preferably, the power component and the filter component are detachably connected, and the power component is any one of a hydraulic cylinder, an electric push rod, or a motor drive screw.

[0009] Preferably, the delivery device includes an infusion tube connected to the storage chamber and extending to the top of the filter assembly at one end away from the storage chamber, a valve installed on the side of the infusion tube away from the storage chamber, and an infusion pump installed on the infusion tube.

[0010] Preferably, a straight nozzle is installed at the free end of the infusion tube, the length of the water flow sprayed by the straight nozzle is adapted to the width of the first filter plate and the second filter plate, and the width of the water flow sprayed by the straight nozzle is 20% of the length of the first filter plate and the second filter plate.

[0011] Preferably, it also includes an alarm and a second liquid level sensor installed on the top of the housing for monitoring the cutting fluid to be filtered in the storage chamber. The controller controls the operation of the alarm and the infusion pump based on the liquid level signal of the cutting fluid in the storage chamber monitored by the second liquid level sensor.

[0012] The beneficial effects of this utility model are: by monitoring the liquid level of the cutting fluid in the recovery tank through a liquid level sensor, and controlling the operation of the power component according to the liquid level signal by the controller, the automatic switching of the filtration area of ​​the filter component is realized, which improves the automation level and filtration efficiency of the equipment. The automatic switching of the filtration area not only avoids the filter component from working in a single area for a long time, reducing the risk of wear and blockage and extending the service life of the equipment, but also makes full use of the filtration area of ​​the filter plate, avoiding premature wear or blockage in some areas of the filter screen. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a top view of the structure of this utility model;

[0015] Figure 3 This is a side sectional view of the present invention.

[0016] Figure 4 This is an enlarged structural diagram of point A in this utility model;

[0017] Figure 5 This is a top view cross-sectional structural diagram of the present invention.

[0018] In the diagram: 1. Storage chamber; 2. Box body; 3. Filter assembly; 4. Conveying equipment; 5. Recycling box; 6. Controller; 7. Power assembly; 8. Level sensor one; 9. First filter plate; 10. Second filter plate; 11. Infusion pipe; 12. Valve; 13. Infusion pump; 14. Straight nozzle; 15. Level sensor two; 16. Slide groove; 17. Compression fitting; 18. Bolt. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0020] Existing cutting fluid filtration equipment mainly includes a housing 2 with an internal storage chamber 1 for holding the cutting fluid to be filtered, a filter assembly 3 installed inside the housing 2, a conveying device 4 for transporting the cutting fluid from the storage chamber 1 to the filter assembly 3 for filtration, and a recovery tank 5 for collecting the filtered cutting fluid. The filter assembly 3 is usually a filter screen. During use, the cutting fluid is transported to the filter screen for filtration through the conveying device 4 (such as a pump 13 and pipelines). Impurities larger than the filter pore size are blocked outside the filter screen and remain on its surface. When the impurities on the filter screen surface accumulate to a certain thickness, the filtration efficiency of the cutting fluid is poor, so a new filter screen needs to be replaced. However, the traditional design of the filter assembly 3 has some obvious shortcomings. Specifically, the position of the filter screen and the pipeline for transporting the cutting fluid are usually fixed. The cutting fluid is generally transported to the central part of the filter screen for filtration. This filtration method results in the need to switch to another filter screen only when the impurities on the filter screen surface accumulate to a certain thickness. During this process, other areas of the filter screen outside the center may not be used for a long time, resulting in a waste of filtration resources. Since the filtration zones of filter component 3 cannot switch automatically, manual inspection and replacement of the filter screen are required regularly. This not only increases the labor intensity of operators, but also makes it difficult to guarantee the timeliness and accuracy of filtration. At the same time, due to uneven use of the filter screen, some areas may wear out or become clogged prematurely, resulting in a decrease in filtration effect and even affecting the normal operation of the entire filtration equipment.

[0021] Based on the above problems, the present invention adopts the following improvement method to solve them.

[0022] like Figure 1-5 As shown, a water-based semi-synthetic cutting fluid filtration device, based on existing technology, adds a power component 7 inside the housing 2. This power component 7 can be any one of a hydraulic cylinder, an electric push rod, or a motor-driven lead screw, such as... Figure 3As shown, in this utility model, the power component 7 preferably adopts an electric push rod to drive the filter component 3 to move. The filter component 3 includes a first filter plate 9 and a second filter plate 10. The first filter plate 9 has a coarse pore size. In metal processing, cutting fluid often mixes with iron filings. The first filter plate 9 uses a stainless steel filter mesh (pore size 50-200 micrometers) to effectively intercept large iron filings and extend the service life of the cutting fluid. The second filter plate 10 is located below the first filter plate 9 and has a fine pore size (such as a metal fiber mesh or surface-modified filter mesh, which can capture tiny iron filings through electrostatic adsorption or surface tension) to further filter fine particles in the cutting fluid. However, in practical applications, the pore size needs to be selected according to the size of the iron filings; it is recommended that the pore size be 1.5-2 times the average size of the iron filings. The ends of the first filter plate 9 and the second filter plate 10 away from the power component 7 extend to the outside of the housing 2 and are slidably connected to the housing 2 so that they can move under the drive of the power component 7 to switch the filtration areas of the filter plates. Figure 4As shown, the power assembly 7 and the filter assembly 3 are detachably connected. There are two power assemblies 7, referred to here as the first power assembly 7 and the second power assembly 7. Both the first power assembly 7 and the second power assembly 7 have U-shaped retaining sleeves 17 connected to their ends, which are secured to the ends of the filter plates. The two retaining sleeves 17 are respectively connected to one end of the first filter plate 9 and the second filter plate 10 by bolts 18, facilitating the disassembly of the filter plates for replacement with new ones. To accurately determine the timing of the filter plate's filtration zone switching, a liquid level sensor 8 is installed at the recovery tank 5. This liquid level sensor 8 monitors the liquid level signal in the recovery tank 5. The output of the liquid level sensor 8 is connected to the signal input of the controller 6, providing the controller 6 with the liquid level signal of the cutting fluid in the recovery tank 5. The controller 6 controls the operation of the power assembly 7 based on this liquid level signal to switch the filtration zone of the filter assembly 3. The conveying device 4 in this invention includes a fluid conveying device connected to the storage chamber 1, with one end extending away from the storage chamber 1 to the top of the filter assembly 3. The infusion tube 11, the valve 12 installed on the side of the infusion tube 11 away from the storage chamber 1, and the infusion pump 13 installed on the infusion tube 11 are all included. At the same time, a straight nozzle 14 is installed at the free end of the infusion tube 11. (The straight nozzle 14 has three forms: slit nozzle: using a narrow slit as the outlet to directly compress the columnar water flow into a straight shape; fan nozzle: through the internal vortex cavity design, the liquid is sprayed out at a fan angle to form a thin and wide straight water flow; flat nozzle: using a flat nozzle design such as a rectangular outlet, with appropriate pressure, the water flow naturally spreads into a straight shape).The length of the water jet from the straight nozzle 14 is adapted to the width of the first filter plate 9 and the second filter plate 10, and the width of the water jet from the straight nozzle 14 is 20% of the length of the first filter plate 9 and the second filter plate 10. Specifically, for example, if the length of the first filter plate 9 and the second filter plate 10, i.e., the length of the effective filtration area, is 5 meters, the width of the water jet from the straight nozzle 14 is 0.25 meters. In the initial state, the power component 7 (hydraulic cylinder) is in the retracted state, and the straight nozzle 14 is aligned with the side of the filter plate away from the power component 7. During use, the controller 6 opens the infusion pump 13 and the valve 12, and delivers the cutting fluid in the storage chamber 1 to the straight nozzle 14 through the infusion pipe 11, and sprays it towards the first filter plate 9. The first filter plate 9 filters out large particles of impurities in the cutting fluid, and then impurities smaller than the aperture of the first filter plate 9 are removed along with the cutting fluid. After passing through the first filter plate 9, the cutting fluid continues to be filtered through the second filter plate 10 to remove small particulate impurities. The double-filtered cutting fluid then enters the recovery tank 5 for collection. When the level sensor 8 detects that the liquid level in the recovery tank 5 reaches the first preset threshold, it indicates that the impurities filtered on the filter plates have reached a certain thickness. At this time, the controller 6 controls the power unit 7 to move 0.25 meters closer to the straight nozzle 14 to switch the filtration areas of the two filter plates. When the level sensor 8 detects that the liquid level in the recovery tank 5 reaches the second preset threshold, it indicates that the impurities filtered on the filter plates have reached a certain thickness. At this time, the controller 6 controls the power unit 7 to move another 0.25 meters closer to the straight nozzle 14 to switch the two filter plates to the next filtration area. This process is repeated 20 times until all filtration areas on the filter plates are used. Figure 3 As shown, the side wall of the housing 2 is provided with a sliding groove 16 for the filter plate to slide. The upper part of the sliding groove 16 has a large gap so that the filter plate and the impurities accumulated on its surface can pass through. When the power unit 7 drives the filter plate to move through the sliding groove 16 to the outside of the housing 2, the used part can be cleaned while the filter plate is in use. When the liquid level inward reaches the twentieth preset threshold, it means that the volume of cutting fluid in the recovery tank 5 has reached the maximum capacity of the recovery tank 5. At this time, the controller 6 controls the valve 12 and the infusion pump 13 to close, stopping the filtration of cutting fluid.

[0023] Furthermore, such as Figure 3As shown, to prevent the cutting fluid in the storage chamber 1 from overflowing, a second liquid level sensor 15 is also installed on the top of the housing 2. Both the first liquid level sensor 8 and the second liquid level sensor 15 in this invention can be non-contact sensors, namely ultrasonic sensors or photoelectric sensors. The second liquid level sensor 15 is used to monitor the liquid level of the cutting fluid in the storage chamber 1. At the same time, an alarm is installed on the controller 6. When the second liquid level sensor 15 detects that the liquid level of the cutting fluid in the storage chamber 1 reaches the first preset threshold, it indicates that the volume of the cutting fluid is about to reach the maximum capacity of the storage chamber 1. At this time, the second liquid level sensor 15 transmits the signal to the controller 6. The controller 6 drives the alarm to run, reminding the staff with sound and light alarms. At the same time, the operating power of the infusion pump 13 is increased to increase the flow rate of the cutting fluid output.

[0024] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. The above examples are merely to aid in understanding the method and core ideas of this utility model. The above descriptions are only preferred embodiments of this utility model. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of this utility model, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this utility model.

Claims

1. A water-based semi-synthetic cutting fluid filtration device, comprising a housing (2) having an internal storage chamber (1) for containing the cutting fluid to be filtered, a filter assembly (3) installed inside the housing (2), a conveying device (4) for conveying the cutting fluid in the storage chamber (1) to the filter assembly (3) for filtration, and a recovery tank (5) for collecting the filtered cutting fluid, characterized in that: It also includes a controller (6), a power unit (7) installed inside the housing (2), and a liquid level sensor (8) installed on the recycling tank (5). The power unit (7) is used to drive the filter assembly (3) to move. The liquid level sensor (8) is used to monitor the liquid level of the cutting fluid in the recycling tank (5). The output end of the liquid level sensor (8) is connected to the signal input end of the controller (6) to provide the controller (6) with the liquid level signal of the cutting fluid in the recycling tank (5). The controller (6) controls the operation of the power unit (7) according to the liquid level signal to switch the filtration area of ​​the filter assembly (3).

2. The water-based semi-synthetic cutting fluid filtration device according to claim 1, characterized in that: The filter assembly (3) includes a first filter plate (9) and a second filter plate (10); the first filter plate (9) has a coarse pore size for preliminary filtration of large particulate impurities in the cutting fluid; the second filter plate (10) is located below the first filter plate (9) and has a fine pore size for further filtration of fine particles in the cutting fluid; the ends of the first filter plate (9) and the second filter plate (10) away from the power assembly (7) extend to the outside of the housing (2) and are slidably connected to the housing (2) so as to move under the drive of the power assembly (7).

3. The water-based semi-synthetic cutting fluid filtration device according to claim 1, characterized in that: The power component (7) is detachably connected to the filter component (3), and the power component (7) is any one of a hydraulic cylinder, an electric push rod, or a motor drive screw.

4. The water-based semi-synthetic cutting fluid filtration device according to claim 1, characterized in that: The delivery device (4) includes a delivery pipe (11) connected to the storage chamber (1) and extending to the top of the filter assembly (3) at one end away from the storage chamber (1), a valve (12) installed on the side of the delivery pipe (11) away from the storage chamber (1), and a delivery pump (13) installed on the delivery pipe (11).

5. The water-based semi-synthetic cutting fluid filtration device according to claim 4, characterized in that: The free end of the infusion tube (11) is equipped with a straight nozzle (14). The length of the water flow sprayed by the straight nozzle (14) is adapted to the width of the first filter plate (9) and the second filter plate (10), and the width of the water flow sprayed by the straight nozzle (14) is 20% of the length of the first filter plate (9) and the second filter plate (10).

6. The water-based semi-synthetic cutting fluid filtration device according to claim 1, characterized in that: It also includes an alarm and a level sensor 2 (15) installed on the top of the housing (2) for monitoring the cutting fluid to be filtered in the storage chamber (1). The controller (6) controls the operation of the alarm and the infusion pump (13) based on the level signal of the cutting fluid in the storage chamber (1) monitored by the level sensor 2 (15).

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