CN110877936A - Cutting fluid purifying and filtering device - Google Patents

Abstract

The invention provides a cutting fluid purifying and filtering device, which comprises an adsorption device; a pre-filter device; an oil-water separation device; the three-stage filtering device is connected with the oil-water separation device; the adsorption device includes: one end of the water pumping pipe is closed, and a water pumping hole is formed in the water pumping pipe; the movable component can be sleeved on the water pumping pipe in a sliding mode along the water pumping pipe, a gap is formed between the movable component and the water pumping pipe in the radial direction, and a suction inlet is formed at the lower portion of the gap; and the telescopic sleeve is provided with a bottom surface fixed by one end of the water pumping pipe, a side surface capable of axially stretching and retracting along the water pumping pipe and a top surface connected with the moving component, at least the side surface of the telescopic sleeve is configured to be capable of allowing liquid to pass through, and when the side surface is stretched and retracted along the axial direction of the water pumping pipe, the top surface drives the moving component to move along the axial direction of the water pumping pipe.

Description

A cutting fluid purification and filtering device

technical field

The invention relates to a cutting fluid purification and filtering device, which is used for recovering floating oil and purifying and recycling the cutting fluid.

Background technique

Modern metal processing is inseparable from the cooling and lubrication of the cutting fluid, but the cutting fluid is easily polluted by the guide oil and particles, which will destroy the machining accuracy of the workpiece to a certain extent, reduce the yield, and cause serious tool loss. Deterioration can even lead to expensive pollution abatement costs. During the use of the cutting fluid, a thick oil slick is formed due to the infiltration of rail oil and grease, etc., and a large amount of powder and particulate impurities are generated during the cutting process, which may breed a large number of anaerobic bacteria and other harmful bacteria, making the cutting fluid Odor, deterioration, replacement and disposal of waste cutting fluid bring a lot of inconvenience to production, endanger the health of workers, increase production costs of enterprises and so on.

The cutting fluid filtration equipment in the prior art has the following disadvantages: the cutting fluid filtration equipment in the prior art has the shortcomings of large-scale, incomplete filtration, and low oil-water separation degree; the cutting fluid filtration equipment in the prior art is pumping water. When the suction pipe extends to the bottom of the container to draw liquid, a large amount of iron chips may be sucked in, which is not conducive to subsequent separation, and even damages the filter device; The filtration efficiency of the filtration device is reduced.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and to provide a cutting fluid purification and filtering device with a reasonable structure design.

The technical solution adopted by the embodiments of the present invention to solve the above problems is: a cutting fluid purification and filtering device, characterized in that it includes:

adsorption device;

a pre-filtering device, the pre-filtering device is connected with the adsorption device;

an oil-water separation device, the oil-water separation device is connected to the pre-filtering device; and

Three-stage filtering device, the three-stage filtering device is connected with the oil-water separation device;

The adsorption device includes:

a water pumping pipe, one end of the water pumping pipe is closed, and a water pumping hole is arranged on the water pumping pipe;

a moving member, which can be slidably sleeved on the suction pipe along the suction pipe, the moving member and the suction pipe have a gap in the radial direction, and the lower part of the gap forms a suction port; and

A telescopic sleeve, which has a bottom surface fixed with the closed end of the suction pipe, a side surface that can be extended and retracted along the axial direction of the suction pipe, and a top surface connected with the moving member, at least the side surface of the telescopic sleeve It is configured to allow liquid to pass through, and when the side surface expands and contracts along the axial direction of the water suction pipe, the top surface drives the moving member to move along the axial direction of the water suction pipe.

In the embodiment of the present invention, the side surface is configured to expand after absorbing liquid, so that the side surface expands and contracts along the water pipe.

The cross-sectional shape of the side surface in the embodiment of the present invention is configured as a wave shape or a broken line shape.

The moving member according to the embodiment of the present invention has a buoyancy structure to increase the buoyancy of the moving member.

The buoyancy structure according to the embodiment of the present invention is a groove provided on the upper surface of the moving member.

The buoyancy structure according to the embodiment of the present invention is a closed inner cavity disposed on the upper part of the moving member.

In the embodiment of the present invention, the moving member has an annular installation groove, and the inner edge of the top surface of the telescopic sleeve is clamped into the installation groove to be fixed.

The position of the suction port in the embodiment of the present invention is lower than the position of the water suction hole.

The telescopic sleeve in the embodiment of the present invention is made of rubber.

The embodiment of the present invention further includes an installation plate, the installation plate is fixed on the end of the water suction pipe, so as to close one end of the water suction pipe, and the bottom surface of the telescopic sleeve is fixed on the installation plate.

The oil-water separation device according to the embodiment of the present invention includes:

a separation cartridge having a accommodating cavity; and

a liquid inlet pipe, which is communicated with the separation cylinder and is configured to feed liquid into the separation cylinder;

The upper part of the separation cylinder is provided with a first bin and a second bin, the first bin is communicated with the accommodating cavity through an oil overflow port, an oil collecting port is set on the first bin, and the accommodating chamber is The liquid in the cavity flows into the first bin through the oil spill port, and the inflowing liquid is recovered from the oil collecting port;

A pipe part is set in the second bin, the lower end of the tube part extends into the separation cylinder, and the upper end of the tube part is communicated with the second bin; The upper end of the outlet part has a water outlet, and the height of the water outlet is lower than the oil overflow outlet.

In the embodiment of the present invention, the outlet portion includes a connecting portion and an adjusting unit, and the adjusting unit is disposed on the connecting portion to be adjustable up and down along the axial direction of the pipe portion to adjust the height of the water outlet.

In the embodiment of the present invention, the adjusting unit is screwed with the connecting portion, and the connecting portion is fixed on the upper end of the pipe portion.

The adjusting unit according to the embodiment of the present invention is provided with a holding portion.

In the embodiment of the present invention, the upper part of the accommodating cavity has an opening part, the position of the opening part matches the height position of the first compartment and the second compartment, and a first cover plate is arranged at the opening part, The first cover plate has a buffer plate, the buffer plate is inclined in a direction away from the liquid inlet pipe during the downward process, and the buffer plate divides the opening into a first part and a second part, The liquid inlet pipe corresponds to the first portion, and the second portion corresponds to the oil spill port.

An emptying pipe is arranged at the bottom of the separation cylinder according to the embodiment of the present invention.

In the embodiment of the present invention, the lower end of the pipe portion extends at least to the middle position in the height direction of the separation cylinder.

The bottom of the oil spill port in the embodiment of the present invention is straight, and the width of the oil spill port is at least one third of the diameter of the separation cylinder.

In the embodiment of the present invention, the second bin has a return port, and the position of the return port is lower than the water outlet.

Compared with the prior art, the invention has the following advantages and effects: the structure is simple and the design is reasonable; the cutting fluid is transported through the adsorption device, and transported in the most direct, simple and scientific way, so as to separate the floating oil and impurities more efficiently ; A pre-filtering device is installed before the liquid feeding, and the primary impurities are filtered before the liquid feeding system, and the pre-filtering device can be disassembled and cleaned, and it does not need to be replaced after repeated use; After the cutting fluid enters the separation cylinder, the oil layer floats up due to the action of gravity , After the oil-water separation device completes the oil-water separation, the floating oil is discharged from the oil spill port, and the cutting fluid after the oil-water separation enters the three-stage filtration device. After being filtered layer by layer, the reuse is cleaner and the filtration efficiency is high.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram 1 of a three-dimensional structure of a cutting fluid purification and filtering device in an embodiment of the present invention.

FIG. 2 is a schematic diagram 2 of the three-dimensional structure of the cutting fluid purification and filtering device in the embodiment of the present invention with the cover removed.

FIG. 3 is a three-dimensional structural schematic diagram of the cutting fluid purification and filtering device in the embodiment of the present invention.

FIG. 4 is a schematic diagram 1 of the three-dimensional structure of the cutting fluid purification and filtering device in the embodiment of the present invention with the casing removed.

FIG. 5 is a schematic diagram 2 of the three-dimensional structure of the cutting fluid purification and filtering device in the embodiment of the present invention with the casing removed.

FIG. 6 is a schematic three-dimensional structure diagram of an adsorption device in an embodiment of the present invention.

FIG. 7 is a schematic three-dimensional structural diagram of the adsorption device in the embodiment of the present invention with the telescopic sleeve and the moving member removed.

FIG. 8 is a partial cross-sectional structural schematic diagram of an adsorption device in an embodiment of the present invention.

FIG. 9 is a partial cross-sectional structural schematic diagram of an adsorption device in some embodiments.

FIG. 10 is a partial cross-sectional structural schematic diagram of an adsorption device in some embodiments.

FIG. 11 is a schematic diagram 1 of the three-dimensional structure of the oil-water separation device in the embodiment of the present invention.

FIG. 12 is a second schematic diagram of the three-dimensional structure of the oil-water separation device in the embodiment of the present invention.

13 is a schematic cross-sectional structural diagram of an oil-water separation device in an embodiment of the present invention.

FIG. 14 is a schematic diagram 1 of the three-dimensional structure of the first cover plate.

FIG. 15 is a second schematic diagram of the three-dimensional structure of the first cover plate.

FIG. 16 is a structural block diagram of the cutting fluid purification and filtering device in the embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and through the examples. The following examples are to explain the present invention and the present invention is not limited to the following examples.

Example 1.

1 to 16 , the cutting fluid purification and filtering device in this embodiment includes an adsorption device 1 , a pre-filtering device 3 , an oil-water separation device 2 , a tertiary filtering device 4 and a housing 5 .

In this embodiment, the pre-filter device 3 is connected to the adsorption device 1; the oil-water separation device 2 is connected to the pre-filter device 3; the tertiary filter device 4 is connected to the The oil-water separation device 2 is connected. The above-mentioned connection is specifically connected by a pipeline, which will not be repeated here.

In this embodiment, a vacuum pump 6 is provided, and the vacuum pump 6 is provided on the pipeline between the adsorption device 1 and the pre-filter device 3. The vacuum pump 6 provides power to the adsorption device 1, so that the adsorption device 1 can perform suction. liquid, and transport the liquid to the next channel (such as pre-filter device 3).

In this embodiment, a booster pump 7 is provided, and the booster pump 7 is arranged on the pipeline between the oil-water separation device 2 and the tertiary filter device 4 . The booster pump 7 can deliver the liquid to the tertiary filter device 4 .

The above-mentioned vacuum pump 6 and booster pump 7 are in the prior art, and will not be repeated here.

In this embodiment, the pre-filter device 3 , the oil-water separation device 2 and the tertiary filter device 4 can all be arranged in the casing.

The pre-filtering device 3 in this embodiment can use a filter screen or filter paper for filtering, and details are not repeated here. The pre-filter device 3 can filter primary impurities, and the filter screen or filter paper can be dismantled and cleaned, and it does not need to be replaced after repeated use.

The three-stage filtering device 4 in this embodiment has a triple filtering function. After the cutting fluid is separated from oil and water and sterilized, it enters the three-stage filtration device for filtration. The filtration precision is 5-10 microns, which can directly meet the requirements of use. The reuse is cleaner, and the cleanliness and effect are higher than similar products. The three-stage filtering device 4 itself is in the prior art, and it may have triple filtering, for example, three groups of filtering units with different filtering precisions are provided. The filtering precision of the three groups of filtering units increases sequentially. Specifically, the three-stage filtration device 4 is composed of three-stage filter elements with different specifications. The filter elements in the three-stage filtration are different in mesh number, namely stainless steel filter element 50 microns, wire filter element 1600 mesh, and pp cotton filter element 2000-3000 mesh. Fine, layer-by-layer filtration, small filtration resistance, large filtration flow, large dirt holding capacity, and long service life, the fiber diameter and gap of this product can be adjusted during the production process, the inner layer of the filter element is small and the outer layer is large. The dirt holding capacity, the filter element is not easy to be blocked, and the service life is prolonged.

The adsorption device 1 of this embodiment includes a water suction pipe 11 , a moving member 12 , a telescopic sleeve 13 and a mounting plate 14 .

In this embodiment, one end of the water pumping pipe 11 is closed, and the water pumping pipe 11 is provided with a water pumping hole 111 . In this embodiment, the vacuum pump 6 can be used to realize the negative pressure in the water suction pipe 11 .

In this embodiment, the moving member 12 can be slidably sleeved on the suction pipe 11 along the suction pipe 11 . The moving member 12 and the suction pipe 11 have a gap in the radial direction. The lower part forms the suction port 121 . In this embodiment, the liquid is sucked into the gap through the suction port 121 and enters the water suction hole 111 .

The telescopic sleeve 13 in this embodiment has a bottom surface 131 fixed to the closed end of the suction pipe 11 , a side surface 132 that can expand and contract along the axial direction of the suction pipe 11 , and a connection with the moving member 12 The top surface 133, at least the side surface 132 of the telescopic sleeve 13 is configured to allow liquid to pass through. When the side surface 132 expands and contracts along the axial direction of the suction pipe 11, the top surface 133 drives the moving member 12 along the The axial movement of the suction pipe 11, therefore, the position of the suction port 121 can be adjusted to suit the actual liquid level.

The adsorption device 1 in this embodiment is simple in structure and reasonable in design; through the setting of the telescopic sleeve 13, the position of the moving member 12 can be adjusted, so that the suction port 121 can be adapted to the specific liquid level; when the adsorption device needs to recover cutting fluid , a part of the telescopic sleeve 13 is immersed in the liquid surface, after the liquid enters the telescopic sleeve 13, the position of the moving member 12 is adjusted by the telescopic sleeve 13, so that the suction port corresponds to the upper layer of the liquid surface, so as to extract the oil on the upper layer of the liquid surface ( The density of the oil is lower than that of water, so the oil will be located in the upper layer). During the extraction process, the liquid in the upper layer will continue to enter the interior of the telescopic sleeve 13 .

In this embodiment, the side surface 132 is configured to expand after absorbing liquid, so that the side surface 132 can expand and contract along the water suction pipe 11 . Specifically, the side surface 132 absorbs liquid (water or oil), which expands due to its own material relationship, so that the overall height of the side surface 132 increases, and drives the top surface 133 to rise. When the top surface 133 rises, it drives the moving member 12 to rise, thereby The position adjustment of the suction port 121 is completed. That is to say, when the telescopic sleeve 13 is immersed in the liquid too much, the position of the suction port 121 will become higher, so as to prevent the suction of too much water located in the relatively lower layer.

The cross-sectional shape of the side surface 132 in this embodiment is configured as a wave shape or a broken line shape, so that the side surface 132 has a sufficient expansion and contraction range in the axial direction of the suction pipe 11 , thereby increasing the adjustment range of the position of the suction port 121 .

The telescopic sleeve 13 in this embodiment is made of rubber material in the prior art. The rubber material can expand after absorbing water, so that the telescopic sleeve 13 can expand and contract. In addition, when the telescopic sleeve 13 is made of this material, it also acts as a filter. Specifically, the telescopic sleeve 13 can absorb a part of the water, preventing too much water from entering the interior and being extracted, and the telescopic sleeve 13 itself can also prevent iron chipping, etc. Impurities enter its interior. In some embodiments, the telescopic sleeve 13 can also be made of water-absorbent resin or other materials in the prior art, which can achieve the functions of water-absorbing expansion and liquid permeation.

The moving member 12 in this embodiment has a buoyancy structure to increase the buoyancy of the moving member 12 . If the buoyancy on the moving member 12 is not enough, the upper part of the gap between the moving member 12 and the water suction pipe 11 may enter a large amount of water because the moving member 12 is completely submerged. The buoyancy structure is provided to increase the buoyancy of the moving member 12 and prevent it from being completely submerged.

As shown in FIG. 5 , in some embodiments, the buoyancy structure is a groove 122 disposed on the upper surface of the moving member 12 .

As shown in FIG. 4 , in some embodiments, the buoyancy structure is a closed inner cavity 123 disposed on the upper part of the moving member 12 .

In this embodiment, the moving member 12 has an annular installation groove 124 , and the inner edge of the top surface 133 of the telescopic sleeve 13 is clamped into the installation groove 124 to be fixed. If the telescopic sleeve 13 is made of a soft material such as rubber, the detachable connection can be achieved through the above structure.

The position of the suction port 121 in this embodiment is lower than the position of the water suction hole 111 . In order to use the adjustable position of the suction port 121, it can dynamically adjust and absorb the oil in the upper layer.

In this embodiment, the mounting plate 14 is fixed to the end of the suction pipe 11 , so as to close one end of the suction pipe 11 , and the bottom surface 131 of the telescopic sleeve 13 is fixed on the mounting plate 14 . Specifically, the bottom surface 131 can be fixed to the mounting plate 14 by bolts.

In this embodiment, a fixing unit 15 may also be provided for fixing the water suction pipe 11 . Specifically, one end of the fixing unit 15 is fixed on the water suction pipe 11, and the other end of the fixing unit 15 can be fixed to various countertops, container surfaces, etc., so that the adsorption device is in a proper position.

The oil-water separation device 2 in this embodiment includes a separation cylinder 21 and a liquid inlet pipe 22 .

The separation cylinder 21 in this embodiment has an accommodating cavity 211 for storing or feeding liquid, the bottom of the accommodating cavity 211 is closed, and the upper part is at least partially open.

The liquid inlet pipe 22 in this embodiment communicates with the separation cylinder 21 and is configured to feed liquid into the separation cylinder 21 . When in use, the waste liquid is transported from the liquid inlet pipe 22 to the accommodating cavity 211 .

In this embodiment, a first chamber 211 and a second chamber 212 are arranged on the upper part of the separation cylinder 21 , the first chamber 211 communicates with the accommodating cavity 211 through an oil overflow port 213 , and the first chamber 211 An oil collecting port 2111 is provided, the liquid in the accommodating cavity 211 flows into the first bin 211 through the oil overflow port 213 , and the inflowing liquid is recovered from the oil collecting port 2111 .

In this embodiment, a pipe portion 2121 is arranged in the second chamber 212 . The lower end of the pipe portion 2121 extends into the separation cylinder 21 , and the upper end of the pipe portion 2121 is communicated with the second chamber 212 . The pipe portion 2121 An outlet portion 2122 is provided at the upper end of the outlet portion 2122 , and the upper end of the outlet portion 2122 has a water outlet 2123 , and the height of the water outlet 2123 is lower than that of the oil spill port 213 . In one embodiment, the height of the water outlet 2123 is slightly lower than the height of the oil spill port 213 , for example, the height of the water outlet 2123 is 3˜8 mm lower than the height of the oil spill port 213 . In one embodiment, the height of the water outlet 2123 is equal to or slightly higher than the height of the oil spill port 213 , for example, the height of the water outlet 2123 is 0˜5 mm higher than the height of the oil spill port 213 . After the liquid inlet pipe 22 enters the liquid, the liquid level in the accommodating cavity 211 rises, so that the oil floating on the water surface enters the first tank 211 through the oil spill port 213 . The height relationship between the water outlet 2123 and the oil spill port 213 can control the height of the liquid level, thereby controlling the thickness of the oil layer. If the liquid level in the accommodating cavity 211 is too high, the oil layer will be too thin, and water will flow out of the oil spill port 213 to the first tank 211, and if the liquid level in the accommodating cavity 211 is too low, the oil layer will be too thick , the oil spill port 213 needs to accumulate oil for a long time or no oil.

This embodiment is simple in structure and reasonable in design; when in use, clean water is injected into the accommodating cavity 211, whose liquid level is slightly lower than the oil spill port 213, and then the waste liquid is injected into the accommodating cavity 211 through the liquid inlet pipe 22, and the waste liquid is injected into the accommodating cavity 211. The oil in the liquid floats on the water surface due to its lower density than water, and flows into the first tank 211 through the oil overflow port 213, and is recovered or collected from the oil collection port 2111 of the first tank 211; The device has the advantages of high separation efficiency, low cost, small volume and simple operation.

In this embodiment, the outlet portion 2122 includes a connecting portion 2124 and an adjusting unit 2125. The adjusting unit 2125 is disposed on the connecting portion 2124 and can be adjusted up and down along the axial direction of the pipe portion 2121 to adjust the The height of the water outlet 2123. By adjusting the height of the water outlet 2123 by the adjusting unit 2125, the liquid level in the accommodating cavity 211 can be controlled, so that the oil layer flows into the first tank 211 from the oil spill port 213 more reasonably.

In this embodiment, the adjusting unit 2125 is threadedly connected with the connecting portion 2124 , and the connecting portion 2124 is fixed on the upper end of the pipe portion 2121 . When the adjusting unit 2125 rotates relative to the connecting portion 2124, the position of the adjusting unit 2125 changes, so that the height of the water outlet 2123 can be adjusted, and the operation is very convenient. In other embodiments, the adjusting unit 2125 may also adopt other structures in the prior art to realize the height-adjustable connection between the adjusting unit 2125 and the connecting portion 2124, such as a socket connection.

A holding portion 2126 is disposed on the adjusting unit 2125 in this embodiment. Thus, it is convenient to rotate the adjusting unit 2125 .

The upper portion of the accommodating cavity 211 in this embodiment has an opening, the position of the opening matches the height of the first compartment 211 and the second compartment 212 , and a first compartment is disposed at the opening. A cover plate 2128, the first cover plate 2128 has a buffer plate 2129, the buffer plate 2129 is inclined in a direction away from the liquid inlet pipe 22 during the downward process, and the buffer plate 2129 closes the opening. Divided into a first part and a second part, the liquid inlet pipe 22 corresponds to the first part, and the second part corresponds to the oil overflow port 213 . The setting of the buffer plate 2129 has a certain buffering function for the cutting fluid entering the accommodating cavity 211 from the liquid inlet pipe 22, forming a small cavity, which is conducive to the concentration of floating oil. The setting of the cover plate 2128 can prevent splashing.

An emptying pipe 214 is provided at the bottom of the separation cylinder 21 in this embodiment. So that the cutting fluid in the accommodating cavity 211 can be emptied in time after the equipment stops running.

The lower end of the pipe portion 2121 in this embodiment extends at least to the middle position in the height direction of the separation cylinder 21 . In order to prevent the oil in the upper layer from entering the pipe part 2121 and being discharged from the second tank 212 .

The bottom of the oil spill port 213 in this embodiment is straight, and the width of the oil spill port 213 is at least one third of the diameter of the separation cylinder 21 . Therefore, the oil layer can quickly pass through the oil spill port 213 .

The second chamber 212 in this embodiment has a return port 2120 , and the position of the return port 2120 is lower than the water outlet 2123 . After the water flows into the second tank 212 , it is discharged from the return port 2120 .

The casing 5 in this embodiment has a cover 51 , and the cover 51 is openably mounted on the casing 5 . For example, the cover body 51 can be fixed on the casing 5 by hinged type, or can be directly fixed on the casing 5 in a detachable type. The positions of the cover body 51 correspond to the first compartment 211 and a second compartment 212 respectively. When the cover body 51 is opened, the first compartment 211 and a second compartment 212 can be exposed, thereby facilitating inspection and maintenance. When there are many impurities, it can be cleaned in time.

16, the working principle of this embodiment: a liquid storage tank 8 is provided for storing cutting fluid; the adsorption device 1 extracts the liquid from the liquid storage tank 8 and transports it to the pre-filtering device 3, and the pre-filtering device 3 pairs After the liquid is preliminarily filtered (to filter out impurities), the liquid enters the oil-water separation device 2; an oil storage tank 9 is provided, and the oil-water separation device 2 separates the liquid from oil and water, and the oil is discharged into the oil storage tank 9, and the oil after the oil is filtered out. On the one hand, the liquid can directly enter the liquid storage tank 8 through the emptying pipe 214, and on the other hand, the liquid can enter the tertiary filtering device 4 through the pipeline for filtration, and the filtered liquid directly enters the liquid storage tank 8 for utilization.

The above content described in this specification is merely an illustration of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, as long as they do not deviate from the content of the description of the present invention or go beyond the scope defined by the claims. , should belong to the protection scope of the present invention.

Claims (10)

1. a cutting fluid purification filter device, is characterized in that, comprises: adsorption device; a pre-filtering device, the pre-filtering device is connected with the adsorption device; an oil-water separation device, the oil-water separation device is connected to the pre-filtering device; and Three-stage filtering device, the three-stage filtering device is connected with the oil-water separation device; The adsorption device includes: a water pumping pipe, one end of the water pumping pipe is closed, and a water pumping hole is arranged on the water pumping pipe; a moving member, which can be slidably sleeved on the suction pipe along the suction pipe, the moving member and the suction pipe have a gap in the radial direction, and the lower part of the gap forms a suction port; and A telescopic sleeve, which has a bottom surface fixed with the closed end of the suction pipe, a side surface that can be extended and retracted along the axial direction of the suction pipe, and a top surface connected with the moving member, at least the side surface of the telescopic sleeve It is configured to allow liquid to pass through, and when the side surface expands and contracts along the axial direction of the water suction pipe, the top surface drives the moving member to move along the axial direction of the water suction pipe. 2 . The cutting fluid purification and filtering device according to claim 1 , wherein the side surface is configured to expand after absorbing the liquid, so that the side surface expands and contracts along the water suction pipe. 3 . 3 . The cutting fluid purification and filtering device according to claim 1 , wherein the moving member has a buoyancy structure to increase the buoyancy of the moving member. 4 . 4 . The cutting fluid purification and filtering device according to claim 3 , wherein the buoyancy structure is a groove provided on the upper surface of the moving member. 5 . 5. The cutting fluid purification and filtering device according to claim 1, wherein the oil-water separation device comprises: a separation cartridge having a accommodating cavity; and a liquid inlet pipe, which is communicated with the separation cylinder and is configured to feed liquid into the separation cylinder; The upper part of the separation cylinder is provided with a first bin and a second bin, the first bin is communicated with the accommodating cavity through an oil overflow port, an oil collecting port is set on the first bin, and the accommodating chamber is The liquid in the cavity flows into the first bin through the oil spill port, and the inflowing liquid is recovered from the oil collecting port; A pipe part is set in the second bin, the lower end of the tube part extends into the separation cylinder, and the upper end of the tube part is communicated with the second bin; The upper end of the outlet part has a water outlet, and the height of the water outlet is lower than the oil overflow outlet. 6 . The cutting fluid purifying and filtering device according to claim 5 , wherein the outlet portion comprises a connecting portion and an adjusting unit, and the adjusting unit can be adjusted up and down along the axial direction of the pipe portion. 6 . on the connecting part to adjust the height of the water outlet. 7 . The cutting fluid purification and filtering device according to claim 5 , wherein the adjusting unit is threadedly connected with the connecting portion, and the connecting portion is fixed on the upper end of the pipe portion. 8 . 8 . The cutting fluid purification and filtering device according to claim 5 , wherein the upper part of the accommodating cavity has an opening, and the position of the opening is the same as the height of the first bin and the second bin. 9 . The positions are matched, a first cover plate is provided at the opening, and the first cover plate has a buffer plate. The plate divides the opening into a first part and a second part, the liquid inlet pipe corresponds to the first part, and the second part corresponds to the oil overflow port. 9 . The cutting fluid purification and filtering device according to claim 5 , wherein the lower end of the pipe portion extends at least to an intermediate position in the height direction of the separation cylinder. 10 . 10 . The cutting fluid purification and filtering device according to claim 5 , wherein the bottom of the oil spill port is straight, and the width of the oil spill port is at least one third of the diameter of the separation cylinder. 11 . one.

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