The processing fluid treatment system with a flow-reducing device

Abstract

A processing fluid treatment system with a flow-reducing device includes a water tank with an inlet for receiving used processing fluid. The processing fluid first enters the sewage area of the water tank, where debris and processing residues settle in the clean water area, turning the processing fluid into clean water. The clean water is then extracted and sent to a filtration device, where it is filtered and becomes purified water. This purified water is then transferred via an input mechanism to the purified water area, allowing the processing fluid, after impurity removal, to be recycled and reused. The key feature of this invention is that the sewage area and the clean water area are connected through a flow-reducing device. This allows the processing fluid in the sewage area to settle residues and debris, turning the processing fluid into clean water, which is then transported to the filtration device for impurity removal and converted into purified water. This design extends the lifespan of the filtration device, reduces the frequency of consumable replacements, and lowers the costs associated with consumables and downtime for replacements.

Description

[Technical Field]

[0001] This invention relates to a processing fluid treatment system with a slow-flow device, and more particularly to a processing fluid treatment system for a wire EDM machine, which is generally a processing system for filtering and recycling EDM fluid with water as the medium. [Previous Technology]

[0002] A known technical device is disclosed in Chinese Utility Model Patent No. CN 214602381U, published on November 5, 2021, which discloses a water storage tank with an ultra-clear water tank. The water storage tank has a three-tank structure, namely an ultra-clear water tank, a clear water tank, and a sewage tank. One-way movable partitions are provided on both sides of the clear water tank. The left partition ensures that water can only flow from the clear water tank into the ultra-clear water tank, and the right partition ensures that water can only flow from the clear water tank into the sewage tank. The liquid level of the ultra-clear water tank is in a high-level overflow state to ensure that water from the clear water tank and the sewage tank will not enter the ultra-clear water tank. The ultra-clear water tank is equipped with a jet pump. During jet processing, the water is supplied from the ultra-clear water tank through the jet pump, and then flows from the jet pump into the high and low pressure flow meters and finally into the processing water tank for jet processing. The clear water tank is equipped with a delivery pump, through which the ion exchange resin from the pure water unit is supplied to the clear water tank. The wastewater tank is equipped with a circulation pump, which, as shown in the diagram, is connected to a filter to directly filter the water in the wastewater tank. When the processing water tank is being supplied, the water is supplied from the clear water tank by the circulation pump and from the wastewater tank by the delivery pump. This ensures that water from the wastewater tank does not enter the clear water tank during the supply / processing process, maximizing the cleanliness of the water in the ultra-clear water tank and providing an ultra-clean processing environment during jet processing.

[0003] The above-mentioned prior art discloses a water storage tank with an ultra-clear water tank. Although the water storage tank is divided into three sections, it is also necessary to equip it with three pumps: a circulation pump, a liquid delivery pump, and a jet pump. This results in a complex distribution method of the processing liquid through different water paths, so that the water in the sewage tank will not enter the clear water tank, and the water in the clear water tank will not enter the ultra-clear water tank. The sewage tank is equipped with a circulation pump. Referring to the figure, the circulation pump is connected to the filter. The filter directly filters the water in the sewage tank, filtering out impurities from the most turbid sewage of the processing waste liquid. However, the replacement frequency and cost of filter consumables are not considered.

[0004] The prior art disclosed in Republic of China Invention Patent No. TW 1829849 B, published on January 21, 2024, describes a waste liquid treatment device that includes a filter composed of a plurality of inclined plates of resin or filter paper to filter the processing waste liquid. It also includes a concentrated area with an inclined surface at a specific part of the bottom of the liquid tank for concentrating processing debris, and a discharge means to discharge the processing debris settled in the concentrated area outside the liquid tank. By discharging the processing debris settled in the concentrated area using this discharge means, waste liquid treatment can be continuously performed. The disadvantage of the aforementioned prior art waste liquid treatment device is that the filter, composed of a plurality of inclined plates of resin or filter paper, filters impurities from the most turbid wastewater of the processing waste liquid, without considering the frequency and cost of filter replacement.

[0005] For example, as disclosed in the Republic of China Utility Model Patent No. M489717 published on November 11, 2014, a wire EDM machine processing fluid filtration system replacement device includes: a wire EDM machine, a working water tank, a water tank, and a filtration device in the water tank. Wastewater is filtered by the filtration device and then sent back to the clean water area of ​​the water tank. The water in the clean water area of ​​the water tank then supplies water to the working water tank. The main feature is that the filtration device has two or more filtration systems, each filtration system including one or more filter cartridges, one or more water supply pipes, and... One or more on / off switches are installed on the aforementioned water supply pipe. Accordingly, when the filter cartridge needs to be replaced, the machine does not need to be stopped. Simply close the on / off switch of one set of filter systems to replace the filter cartridge corresponding to that set of on / off switches. The filter cartridge corresponding to the other on / off switch continues to filter and supply water. After replacement, one on / off switch is turned on and the other on / off switch is turned off to replace the filter cartridge of another set of filter systems. This wire EDM processing fluid filtration system replacement device uses two or more sets of filter systems to achieve the effect of replacing without stopping the machine by turning them off and on at different times.

[0006] The disadvantage of the wire EDM machining fluid filtration system replacement device disclosed in the prior art is that it uses two or more filtration systems, each of which includes one or more filter cartridges, to increase the complexity of the filtration system so that the machine does not need to be stopped when replacing the filter cartridges. The sewage in the wastewater area of ​​the water tank is pumped to the aforementioned filtration equipment via a pump, which also filters the most turbid sewage of the processing wastewater to remove impurities, without considering the replacement frequency and cost of the filter (cartridge) consumables.

[0007] Conventional water storage tanks with ultra-clear water tanks, waste liquid treatment devices, and wire cutting machine processing fluid filtration system replacement devices all directly filter impurities from the most turbid wastewater of the processing waste liquid. For example, a water storage tank with an ultra-clear water tank, although divided into three sections, requires three pumps: a circulation pump, a delivery pump, and a jet pump. This complex distribution method of the processing fluid through different water paths ensures that the wastewater tank does not enter the clear water tank, and the clear water tank does not enter the ultra-clear water tank. The wastewater tank is equipped with a circulation pump connected to a filter, directly filtering the wastewater tank water and removing impurities from the most turbid wastewater of the processing waste liquid. Similarly, waste liquid treatment devices with filters, consisting of multiple inclined plates of resin or filter paper, inevitably require frequent replacement of filter consumables. Another device is a replacement device for the filtration system of a wire EDM machine. In order to achieve the effect of replacing the filtration equipment when the machine needs to be stopped, it has two or more filtration systems. Each filtration system includes one or more filter cartridges. The increased complexity of the filtration system allows the machine to be replaced without stopping the machine. The sewage in the water tank is pumped to the aforementioned filtration equipment by a pump. It also filters the most turbid sewage from the processing waste liquid to remove impurities. However, it does not take into account the replacement frequency and cost of the filter (cartridge) consumables.

[0008] This invention proposes a processing fluid treatment system with a slow-flow device, different from conventional technology. The system comprises a wastewater zone, a clear water zone, and a clean water zone within a water tank. A slow-flow device with stratified holes of different sizes separates the wastewater zone from the clear water zone. Based on the principle that smaller holes result in smaller flow rates and lower kinetic energy, smaller holes can be arranged closer to the bottom layer to prevent processing chips and debris from being stirred up. When the processing fluid falls from the top of the water tank into the wastewater zone, it is in a state of maximum kinetic energy and greatest disturbance. After passing through the slow-flow device and entering the clear water zone, the flow rate and disturbance of the processing fluid decrease, allowing the most turbid wastewater to undergo stratified sedimentation of processing chips and impurities, transforming it into clear water. The clear water from the clear water zone is then transported to a filtration device by an extraction device. Water treated by the filtration device becomes purified water, which can then be used as processing fluid for the processing machine. For example, the filtration device in a wire EDM machine uses a high-cost consumable material with a 10μm internal and external pressure filter screen. This invention proposes a processing fluid treatment system with a slow-flow device. The purified water treated by this slow-flow device is then filtered. The water tank can be simply divided into three zones: a wastewater zone, a clean water zone, and a purified water zone, eliminating the need for additional pumps for separate water delivery. The wastewater zone within the water tank does not require an additional filter. The purified water treated by the slow-flow device is pumped to the filtration device, extending the lifespan of the filter screen and reducing the replacement frequency and consumable costs of the internal and external pressure filter screen. [Summary of the Invention]

[0009] In summary, none of the inventions or creations in the prior art have considered how to extend the service life of the filtration device and reduce the replacement frequency and cost of filter consumables. Therefore, there is a need to develop a processing fluid treatment system with a simple and low-cost water tank structure that can extend the service life of the filtration device and improve the efficiency of recycling the processing fluid after removing impurities.

[0010] The processing fluid treatment system with a slow-flow device of the present invention includes a water tank with an inlet for inputting used processing fluid. The used processing fluid first goes to the wastewater zone of the water tank, and after passing through the clear water zone to settle processing debris and impurities, the processing fluid becomes clear water. The clear water is output to a filtration device through an extraction means. After filtration, the clear water becomes clean water and is then sent to the clean water zone through an input means, so that the processing fluid becomes clean water after removing impurities and can be recycled. The feature is that the wastewater zone and the clear water zone are connected by a slow-flow device, so that the processing fluid in the wastewater zone passes through the slow-flow device and enters the clear water zone to settle processing debris and impurities. The processing fluid becomes clear water and is then sent to the filtration device to filter impurities and become clean water.

[0011] The effect of the present invention is to provide a cost-reducing processing fluid treatment system with a slow-flow device. The clean water treated by the slow-flow device is then filtered, which can extend the service life of the filter screen of the filter device, reduce the replacement frequency of the filter screen and the cost of consumables. In particular, there is no need to add a filter in the sewage area of ​​the water tank, and there is no need to replace consumables such as filter resin or filter paper. The slow-flow device can improve the removal of impurities from the processing fluid of the processing fluid treatment system, thereby extending the service life of the filter device, reducing the replacement frequency of consumables in the filter device, reducing the cost of consumables, and reducing the time wasted on downtime to replace the filter device. [Simplified Explanation of the Diagram]

[0020] [Figure 1] is a schematic diagram of the processing fluid treatment system according to the present invention.

[0021] [Figure 2] is a front view of the water tank structure according to the present invention.

[0022] [Figure 3] is a partial perspective sectional view of the processing fluid treatment system of the present invention.

[0023] [Figure 4] is a perspective view of the flow slowing device according to the present invention.

[0024] [Figure 5] is a perspective view of another embodiment of the flow slowing device according to the present invention.

Implementation Method

[0012] Please refer to Figure 1, which is a schematic diagram of the processing fluid treatment system according to the present invention. A water tank 10 can be divided into different spaces: a wastewater zone 1, a clean water zone 2, and a clean water zone 3. The used processing fluid can first enter the wastewater zone 1 through the inlet 5. At this time, the processing fluid is rich in processing debris and impurities, and the disturbance is large and the turbidity is the highest. It is necessary to use a flow slowing device 6 to make the processing fluid enter the clean water zone 2. As the processing fluid passes through the flow slowing device 6, the disturbance from the wastewater zone 1 to the clean water zone 2 is reduced. According to the smaller the orifice, the smaller the flow rate. The smaller the kinetic energy, the smaller the holes arranged at the bottom of the slow-flow device 6, so that the processing chips and debris are not easily stirred up. The processing chips and debris can settle in the clear water zone 2. The clear water in the clear water zone 2 can be drawn by the extraction means 7 through the motor water pipe and other devices (not shown in the figure) to the filter device 4. After filtration or ion exchange, clean water can be produced. The clean water is input into the clean water zone 3 through the input means 8 through the motor water pipe and other devices (not shown in the figure), so that the clean processing fluid can be recycled for the processing machine.

[0013] Please refer to Figure 2, which is a front view of the water tank structure according to the present invention. A water tank 10 can be divided into different spaces: a sewage zone 1, a clean water zone 2, and a purified water zone 3. According to the schematic diagram of the embodiment, the used processing fluid quickly enters the sewage zone 1, where the turbidity of the processing chips and impurities is the highest. After passing through a slow-flow device 6, it enters the clean water zone 2. The slow-flow device 6 has a plurality of holes arranged vertically on the partition surface between the sewage zone 1 and the clean water zone 2 to allow the processing fluid to pass through. The size and area of ​​the plurality of holes can be different, so that after the processing fluid passes through the slow-flow device 6, larger processing chips and impurities are blocked, and the flow rate is slowed down to allow the processing chips and impurities to settle. The turbidity of the processing fluid in the clean water zone 2 is reduced to become clean water. The clean water is extracted for filtration treatment, which can help extend the life of the filter screen. After the clean water is filtered, it becomes purified water and can be input into the purified water zone 3 in the water tank 10.

[0014] Please refer to Figure 3, which is a partial three-dimensional cross-sectional view of the processing fluid treatment system of the present invention. It is a combined embodiment of a water tank 10 and a filter device 4 of a wire EDM machine. The water tank 10 can be divided into different spaces: a wastewater zone 1, a clean water zone 2, and a clean water zone 3. A flow-slowing device 6 is a partition plate fixedly erected in the wastewater zone 1 and the clean water zone 2. It is the only channel for the processing fluid to flow from the wastewater zone 1 into the clean water zone 2. The flow-slowing device 6 is provided with circular holes of different diameters. Starting from the bottom layer, the holes are arranged in layers from small to large on the plate-shaped flow-slowing device 6. According to the principle that the smaller the hole, the smaller the flow rate and the smaller the kinetic energy, the smaller the hole can be arranged closer to the bottom layer, so that the processing chips and debris are not easily stirred up, and the processing fluid passing through the small holes closer to the bottom layer is processed more effectively. Processing debris and impurities settle to the bottom, reducing the turbidity of the processing fluid in the clean water zone 2 to become clean water. This clean water is then drawn into a filtration device 4 for filtration. Taking a wire EDM machine as an example, the filtration device 4 uses two cylindrical filter elements, an internal and external pressure filter screen 41, and an internal and external pressure filter screen 42. For example, a filter element with a specification of 10μm internal and external pressure filter screen costs more than NT$2,500. Drawing clean water with lower turbidity into the filtration device 4, compared to conventional technology that directly draws in wastewater with high turbidity for filtration, can extend the service life of the internal and external pressure filter screens 41 and 42. After being processed and filtered by the filtration device 4, the water becomes clean water and can then be input into the clean water zone 3. The clean water can be provided as the processing fluid for the wire EDM machine during EDM.

[0015] Please refer to Figure 4, which is a perspective view of the flow-slowing device according to the present invention. In this embodiment, a flow-slowing device 6 is provided with circular holes of different diameters in the Z-axis direction. Starting from the bottom Z0 position, the holes are arranged in layers from small to large in the Z+ direction. The bottom two layers of the flow-slowing device 6 are arranged with 15 small circular holes 63 of the smallest diameter in the X direction; the middle two layers of the Z-axis are arranged with 15 medium circular holes 62 of the larger diameter in the X direction; and the top three layers of the Z-axis are arranged with 15 large circular holes 61 of the largest diameter in the X direction. By arranging the holes from the bottom to the top in the Z+ direction with the area increasing from small to large, the shape, position, and number of the holes can be varied to achieve a better flow-slowing and sedimentation effect.

[0016] Please refer to Figure 5, which is a perspective view of another embodiment of the flow-slowing device according to the present invention. This embodiment combines a flow-slowing device 6 and another flow-slowing device 66. Each flow-slowing device is provided with circular holes of different diameters in the Z-axis direction, with the holes increasing in size from the bottom Z0 position towards the Z+ direction. The plate-shaped flow-slowing device 66 is arranged in layers with circular holes of different diameters. The bottom two layers in the Z-axis direction each have the smallest diameter circular holes 631 in the X direction. The middle two layers in the Z-axis each have the smallest diameter circular holes 631 in the X direction. The layer is provided with a large diameter circular central hole 621. Above the Z-axis, the three layers each have the largest diameter circular large hole 611 in the X direction. The large holes 611 are staggered with each other. For example, the large hole 61 passes through the center line of the circle but does not pass through the center of the circle. The shape, position and number of holes in each layer of the flow-slowing device 66 can be varied to make them staggered with each other, thereby increasing the damping of the liquid passing through multiple flow-slowing devices and increasing the slow flow and sedimentation effect of the processing liquid.

[0017] In summary, the processing fluid treatment system with a slow-flow device of the present invention allows used processing fluid to enter the wastewater zone and then pass through a slow-flow device into the clean water zone. Because the slow-flow device has holes of different sizes arranged in layers with smaller holes closer to the bottom, the flow rate of the turbid processing fluid from the wastewater zone slows down upon entering the clean water zone. This allows processing debris and impurities to settle, turning the processing fluid into clean water, which is then transported to a filtration device to filter out impurities and become purified water. The advantages of this invention include providing a cost-effective processing fluid treatment system with a slow-flow device, extending the service life of the filtration device, reducing the frequency of replacement of consumables in the filtration device, lowering consumable costs, and reducing downtime wasted time on filter replacements.

[0018] The specific embodiments described above are merely representative embodiments of the present invention, and the specific methods, apparatuses, conditions, materials, etc., exemplified therein are not intended to limit the present invention or the corresponding specific embodiments. Furthermore, the apparatuses in the figures are only used to express their relative positions and are not drawn to scale, as previously stated. The preferred embodiments disclosed above are not intended to limit the scope of the present invention, but should cover various modifications and equivalent arrangements within the scope of the patent claims to be made by the present invention. Therefore, the scope of the patent claims to be made by the present invention should be interpreted in the broadest possible sense, so as to cover all possible modifications and equivalent arrangements.

Claims

1. A processing fluid treatment system with a flow-slowing device, comprising: A water tank is provided with at least a wastewater zone, a clean water zone, and a purified water zone. A flow-slowing device is installed in the passage between the wastewater zone and the clean water zone. The used processing fluid enters the wastewater zone and then passes through the flow-slowing device into the clean water zone to become clean water. The flow-slowing device is provided with a plurality of through holes arranged in layers, with the through holes having an area that increases from the bottom layer to the top layer, so that the processing debris and impurities passing through the smaller through holes closer to the bottom layer can settle to the bottom layer. A filtration device is provided to filter the clean water in the clean water zone, and the filtered clean water becomes purified water, which is used during processing. The characteristic feature is that the used processing fluid enters the clean water zone through the flow-slowing device, where the processing debris and impurities settle to become clean water, and then it is transported to the filtration device to filter out impurities and become purified water.

2. The processing fluid treatment system with a flow-retarding device as described in claim 1, wherein the flow-retarding device is the only channel for the used processing fluid to flow from the wastewater zone to the clean water zone.

3. The processing fluid treatment system with a flow-retarding device as claimed in claim 2, wherein the through holes on the flow-retarding device are of three sizes, namely small through holes, medium through holes and large through holes, in order of increasing area.

4. The processing fluid treatment system with a flow-retarding device as described in claim 2, wherein the through-hole on the flow-retarding device is a circular hole.

5. The processing fluid treatment system with a flow-retarding device as described in claim 2 may combine one or more of the flow-retarding devices, and the plurality of flow-retarding devices are stacked together, with the through holes on each flow-retarding device being staggered from one another.

6. The processing fluid treatment system with a flow-retarding device as described in claim 5, wherein each of the flow-retarding devices is provided with a circular through-hole, and the center lines of each circular through-hole do not overlap.

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