Filtering device and diamond wire cutting machine

Abstract

The application relates to a filtering device and a diamond wire cutting machine, the filtering device is used for being connected with an outlet end of cutting coolant of the diamond wire cutting machine, and the filtering device comprises the following: a shell is provided with a liquid channel used for receiving and guiding the cutting coolant; the liquid channel comprises a first filtering channel and a second filtering channel arranged in sequence along a first direction, the first direction intersects with a height direction of the cutting machine, and the second filtering channel is located downstream of the first filtering channel along a flowing direction of the cutting coolant; a first filter screen is arranged in the first filtering channel and connected with the shell; a magnetic filtering element is arranged in the second filtering channel and located downstream of the first filter screen, and the magnetic filtering element is used for magnetically adsorbing metal impurities in the cutting coolant after the cutting coolant passes through the first filter screen. According to the application, the first filter screen is used for filtering impurities such as broken silicon wafers and resin adhesive strips, the magnetic filtering element is used for magnetically adsorbing and filtering metal impurities, and thus small diamond wire metal impurities can be effectively filtered.

Description

Technical Field

[0001] This application relates to the field of filtration, and in particular to a filtration device and a diamond wire cutting machine. Background Technology

[0002] Currently, diamond wire cutting machines are commonly used to cut silicon wafers. During the cutting process, impurities such as broken silicon wafers, strips of resin glue, broken diamond wire, and silicon powder agglomerates are mainly generated. Therefore, existing diamond wire cutting machines are equipped with a filter device at the outlet of the cutting coolant. Typically, the filter device is a 100-200 mesh metal filter.

[0003] However, as the precision of photovoltaic diamond wire cutting increases, the diameter of the diamond wire gradually decreases. Consequently, smaller metal impurities are generated in the diamond wire cutting machine, rendering the original filter screen filtration method ineffective. If these metal impurities are not effectively filtered, they will enter the internal cooling circulation system under the influence of the cutting coolant. When these impurities reach the cutting edge through the guide plate, the diamond wire cutting machine is prone to abnormalities such as wire skipping and breakage, resulting in the loss of silicon material and diamond wire. Utility Model Content

[0004] Based on this, a filtration device and a diamond wire cutting machine are provided. The filtration device can filter out metal impurities, reducing the number of metal impurities entering the internal cooling circulation system under the action of the cutting coolant, reducing abnormal situations such as wire skipping and wire breakage in the diamond wire cutting machine, and reducing the loss of silicon material and diamond wire.

[0005] Therefore, in a first aspect, embodiments of this application provide a filtration device for connection to the outlet end of the cutting coolant of a diamond wire cutting machine, the filtration device comprising:

[0006] The housing is provided with a liquid channel for receiving and guiding the cutting coolant; the liquid channel includes a first filter channel and a second filter channel arranged sequentially along a first direction, the first direction intersecting the height direction of the diamond wire cutting machine, and the second filter channel is located downstream of the first filter channel along the flow direction of the cutting coolant;

[0007] A first filter screen is disposed in the first filter channel and connected to the housing;

[0008] A magnetic filter element is disposed in the second filter channel for magnetically adsorbing metallic impurities in the cutting coolant after passing through the first filter screen.

[0009] In one embodiment, the bottom wall of the second filter channel forms a step with the bottom wall of the first filter channel, and the height of the bottom wall of the second filter channel is higher than the height of the bottom wall of the first filter channel.

[0010] In one embodiment, the liquid channel further includes a liquid inlet channel disposed along a second direction, the inlet end of the liquid inlet channel being higher than the outlet end of the liquid inlet channel, the second direction being intersected with the first direction, and the outlet end of the liquid inlet channel being connected to the inlet end of the first filter channel.

[0011] In one embodiment, a buffer plate is provided at the inlet end of the liquid inlet channel, and the buffer plate is horizontally positioned.

[0012] In one embodiment, the liquid inlet channel is arranged in a ring shape, the first filter channel is arranged in a ring shape and located in the inner ring of the liquid inlet channel, and the second filter channel is arranged in a ring shape and located in the inner ring of the first filter channel.

[0013] In one embodiment, the housing is provided with two mounting rings in the first filter channel. The two mounting rings are spaced apart to form a locking groove for mounting the first filter screen. Each of the two mounting rings is provided with a flow hole for the flow of cutting coolant.

[0014] In one embodiment, a plurality of magnetic filter elements are disposed in the second filter channel. Each magnetic filter element is elongated and extends in the second filter channel to form the same shape as the second filter channel. The extension direction of the magnetic filter element intersects with the flow direction of the cutting coolant.

[0015] In one embodiment, the magnetic filter element is elongated, and the housing has a plurality of spaced-apart fixing posts in the second filter channel, the plurality of fixing posts being used to clamp the magnetic filter element.

[0016] In one embodiment, the housing includes an upper shell and a lower shell, which are vertically spaced to form the liquid channel. A liquid outlet is provided in the middle of the lower shell located downstream of the liquid channel. A second filter screen is provided at the liquid outlet, and the pore size of the second filter screen is smaller than that of the first filter screen.

[0017] Secondly, embodiments of this application provide a diamond wire cutting machine, including a filtering device as described in any of the above claims.

[0018] The diamond wire cutting machine is also equipped with a guide pipe, one end of which is connected to the liquid collection box, and the other end of which faces the filter device, so as to facilitate the introduction of cutting coolant from the liquid collection box into the filter device.

[0019] According to the embodiments of this application, a filtration device and a diamond wire cutting machine are provided. The filtration device is used to connect to the outlet end of the cutting coolant of the diamond wire cutting machine. The filtration device includes a housing, a first filter screen, and a magnetic filter element. The housing is provided with a liquid channel for receiving and guiding the cutting coolant. The liquid channel includes a first filter channel and a second filter channel arranged sequentially along a first direction, which intersects with the height direction of the cutting machine. The first filter screen is disposed in the first filter channel and connected to the housing. The magnetic filter element is disposed in the second filter channel and located downstream of the first filter screen. The magnetic filter element is used to magnetically adsorb metal impurities in the cutting coolant after passing through the first filter screen. This application includes a first filter screen and a magnetic filter element. For impurities generated during diamond wire cutting and grinding, the first filter screen filters out fragments of silicon wafers, resin strips, and other impurities. The magnetic filter element magnetically adsorbs and filters metal impurities generated by diamond wire wear, achieving secondary filtration. This effectively filters out small diamond wire metal impurities, reducing the amount of metal impurities entering the internal cooling circulation system under the influence of the cutting coolant. This reduces abnormalities such as wire skipping and breakage in the diamond wire cutter, minimizing silicon and diamond wire losses. Furthermore, the first and second filter channels are intersected with the height of the diamond wire cutter, slowing down the speed of the cutting coolant in both channels and further improving the filtration effect. Attached Figure Description

[0020] Figure 1 This illustration shows a structural schematic diagram of a diamond wire cutting machine provided in an embodiment of this application;

[0021] Figure 2 This diagram illustrates the structure of a filtration device according to an embodiment of this application.

[0022] Figure 3 This illustration shows a cross-sectional view of a filtering device provided in an embodiment of this application;

[0023] Figure 4 An exploded view of a filtration device provided in an embodiment of this application is shown;

[0024] Figure 5 This diagram shows a partial structural schematic of a diamond wire cutting machine provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Housing; 11. Liquid channel; 111. Liquid inlet channel; 112. First filter channel; 113. Second filter channel; 114. Buffer plate; 12. Upper shell; 13. Lower shell; 2. First filter screen; 21. Mounting ring; 211. Engaging groove; 212. Flow hole; 3. Magnetic filter element; 31. Fixing column; 4. Second filter screen; 5. Guide tube; 6. Liquid collection box. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0030] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] As the precision of photovoltaic diamond wire cutting increases, the diameter of the diamond wire gradually decreases. Consequently, smaller metal impurities are generated in the diamond wire cutting machine, rendering existing filter methods ineffective in filtering them. If these impurities are not effectively filtered, they will enter the internal cooling circulation system under the influence of the cutting coolant. When these impurities reach the cutting edge through the guide plate, the diamond wire cutting machine is prone to abnormalities such as wire skipping and breakage, resulting in the loss of silicon material and diamond wire.

[0032] To solve the above problems, refer to Figures 1-4 , Figure 1 This illustration shows a structural schematic diagram of a diamond wire cutting machine according to an embodiment of this application. Figure 2 This diagram illustrates the structure of a filtering device according to an embodiment of this application. Figure 3 This image shows a cross-sectional view of a filtration device provided in an embodiment of this application (the arrows point in the direction of the coolant flow). Figure 4 An exploded view of a filtering device provided in an embodiment of this application is shown.

[0033] This application provides a filtration device disposed at the outlet end of the cutting coolant of a diamond wire cutting machine. The filtration device includes a housing 1, a first filter screen 2, and a magnetic filter element 3. The housing 1 is provided with a liquid channel 11 for receiving and guiding the cutting coolant. The liquid channel includes a first filter channel 112 and a second filter channel 113 arranged sequentially along a first direction, which intersects with the height direction of the diamond wire cutting machine. The first filter screen 2 is disposed in the first filter channel 112 and connected to the housing 1. The magnetic filter element 3 is disposed in the second filter channel 113 and located downstream of the first filter screen 2. The magnetic filter element 3 is used to magnetically adsorb metal impurities in the cutting coolant after passing through the first filter screen 2.

[0034] It is important to understand that the filtration device is connected to the outlet of the cutting coolant in the diamond wire cutting machine. This means the filtration device filters the cutting coolant passing through the diamond wire cutting machine, allowing the filtered coolant to re-enter the internal cooling circulation system for reuse. The filtration device includes a housing 1 with a liquid channel 11 through which the cutting coolant flows out of the diamond wire cutting machine. The liquid channel 11 includes a first filtration channel 112 and a second filtration channel 113 arranged sequentially along a first direction. This first direction intersects the height direction of the diamond wire cutting machine; it can be inclined or horizontal. The arrangement of the first filtration channel 112 and the second filtration channel 113 along the first direction slows down the flow rate of the cutting coolant within them, thereby improving the filtration effect. Optionally, the cutting coolant flow rate and filtration effect are optimal when the first filtration channel 112 and the second filtration channel 113 are horizontally arranged. Along the flow direction of the cutting coolant, the second filter channel 113 is located downstream of the first filter channel 112. That is, the cutting coolant first passes through the first filter channel 112 and then through the second filter channel 113.

[0035] The filtration device also includes a first filter screen 2, which is located in the first filtration channel 112 and connected to the housing 1. This application does not limit the mesh shape of the first filter screen 2; the mesh can be round, square, or diamond-shaped, etc. The mesh size of the first filter screen 2 is between 80 and 100 mesh, and further, it is 90 mesh. The first filter screen 2 can coarsely screen impurities such as metal fragments, silicon wafer fragments, strip-shaped resin adhesive, broken diamond wire, and silicon powder agglomerates in the cutting coolant within the first filtration channel 112, thus performing preliminary filtration of the cutting coolant.

[0036] The filtration device also includes a magnetic filter element 3, which is located in the second filtration channel 113 and connected to the housing 1. The magnetic filter element 3 can be located downstream of the first filter screen 2, or it can be installed to the side of the first filter screen 2 during installation. When the cutting coolant, after being filtered by the first filter screen 2 through the first filtration channel 112, passes through the second filtration channel 113, the magnetic filter element 3 in the second filtration channel 113 can further adsorb metal impurities in the cutting coolant, thereby further removing metal impurities from the cutting coolant and achieving secondary filtration.

[0037] This application includes a first filter screen 2 and a magnetic filter element 3. For impurities generated during the diamond wire cutting and grinding process, the first filter screen 2 filters out impurities such as broken silicon wafers and resin strips, while the magnetic filter element 3 magnetically adsorbs and filters out metal impurities generated by diamond wire wear, achieving secondary filtration. This effectively filters out small diamond wire metal impurities, reducing the amount of metal impurities entering the internal cooling circulation system under the influence of the cutting coolant. This reduces abnormalities such as wire skipping and wire breakage in the diamond wire cutting machine, and minimizes the loss of silicon material and diamond wire. Furthermore, the first filter channel 112 and the second filter channel 113 are intersected with the height direction of the diamond wire cutting machine, which slows down the speed of the cutting coolant in the first filter channel 112 and the second filter channel 113, further improving the filtration effect.

[0038] In some optional embodiments, the bottom wall of the second filter channel 113 forms a stepped shape with the bottom wall of the first filter channel 112, and the height of the bottom wall of the second filter channel 113 is higher than that of the bottom wall of the first filter channel 112. That is, the cutting coolant flowing in the first filter channel 112 needs to accumulate to a certain position in the first filter channel 112 before overflowing into the second filter channel 113, thereby further reducing the speed of the cutting coolant, thereby improving the adsorption effect of the magnetic filter element 3 located in the second filter channel 113, further improving the filtration effect of the cutting coolant, further reducing the entry of metal impurities into the internal cooling circulation system under the driving action of the cutting coolant, reducing abnormal situations such as wire skipping and wire breakage in the diamond wire cutting machine, and reducing the loss of silicon material and diamond wire.

[0039] Reference Figure 3 In some optional embodiments, the liquid channel includes an inlet channel 111 disposed along a second direction, the inlet end of the inlet channel 111 being higher than the outlet end of the inlet channel 111, the second direction being disposed intersecting the first direction, and the outlet end of the inlet channel 111 being connected to the inlet end of the first filter channel 112.

[0040] The second direction intersects with the first direction. The inlet channel 111 can be inclined or vertical. The inlet end of the inlet channel 111 is higher than the outlet end, meaning the cutting coolant can move from top to bottom in the inlet channel 111, which increases the flow velocity of the cutting coolant in the inlet channel 111. When the inlet channel 111 is vertical, the flow velocity of the coolant in the inlet channel 111 can be maximized.

[0041] In some optional embodiments, a buffer plate 114 is provided at the inlet end of the liquid inlet channel 111, and the buffer plate 114 is horizontally arranged. The buffer plate 114 is integrally formed with the upper end of the liquid inlet channel 111. The buffer plate 114 can buffer the flow of cutting coolant, reduce the speed of cutting coolant, and improve the subsequent filtration effect of cutting coolant.

[0042] In some optional embodiments, the inlet channel 111 is arranged in a ring shape, the first filter channel 112 is arranged in a ring shape and located in the inner ring of the inlet channel 111, and the second filter channel 113 is arranged in a ring shape and located in the inner ring of the first filter channel 112. The inlet channel 111, the first filter channel 112, and the second filter channel 113 are all arranged in a ring shape, which can be a square ring or a circular ring, etc., and this application is not limited to this. The ring shape allows the cutting coolant to enter from the periphery of the filter device and be filtered, thereby improving the filtration speed. Since the first filter channel 112 is located in the inner ring of the inlet channel 111, and the second filter channel 113 is located in the inner ring of the first filter channel 112, the flow direction of the cutting coolant is from the outer periphery of the housing 1 to the center of the housing 1.

[0043] Reference Figure 3 and Figure 4 In some optional embodiments, the housing 1 is provided with two mounting rings 21 in the first filter channel 112. The two mounting rings 21 are spaced apart to form a locking groove 211 for mounting the first filter screen 2. Each of the two mounting rings 21 has a flow hole 212 for the flow of cutting coolant. When the first filter channel 112 is annular, the first filter screen 2 is also annular. The mounting rings 21 are conformally fitted to the first filter channel 112, that is, when the first filter channel 112 is a square ring, the mounting rings 21 are also square rings. The upper and lower ends of the mounting rings 21 are connected to the housing 1. There are two mounting rings 21, one of which is larger than the other. The larger mounting ring 21 fits the smaller mounting ring 21, and the two mounting rings 21 are spaced apart to form a locking groove 211, which is adapted to the first filter screen 2. Multiple flow holes 212 are provided at intervals on the periphery of the mounting ring 21. The flow holes 212 are elongated holes, and the flow holes 212 of the two mounting rings 21 correspond to each other to facilitate the flow of cutting coolant.

[0044] In some optional embodiments, a plurality of magnetic filter elements 3 are disposed within the second filter channel 113. Each magnetic filter element 3 is elongated, and its extending direction intersects the flow direction of the cutting coolant. The plurality of magnetic filter elements 3 are arranged to enclose each other to form the same shape as the second filter channel 113. The magnetic filter elements 3 are cylindrical. When the second filter channel 113 is arranged in a square ring, four magnetic filter elements 3 are disposed, located in the four sides of the second filter channel 113, enclosing each other to form a square frame. The intersecting direction of the extending direction of the magnetic filter elements 3 with the flow direction of the cutting coolant increases the contact area between the cutting coolant and the magnetic filter elements 3, thereby improving the adsorption of impurities by the magnetic filter elements 3. In one example, the extending direction of the magnetic filter elements 3 is perpendicular to the flow direction of the cutting coolant, further increasing the contact area between the cutting coolant and the magnetic filter elements 3 and improving the adsorption of impurities by the magnetic filter elements 3.

[0045] In some optional embodiments, the housing 1 is provided with a plurality of spaced-apart fixing posts 31 in the second filter channel 113. The plurality of fixing posts 31 are used to clamp the magnetic filter element 3. The fixing posts 31 are cylindrical, and there are a plurality of fixing posts 31 arranged in two groups. Each group of fixing posts 31 is arranged in a ring shape with a gap between them. The two groups are spaced apart to clamp the magnetic filter element 3, thereby fixing the magnetic filter element 3 in the second filter channel 113. The plurality of fixing posts 31 are spaced apart to form gaps, which does not affect the flow of the cutting coolant.

[0046] In some optional embodiments, the housing 1 includes an upper housing 12 and a lower housing 13, which are spaced apart to form a liquid channel 11. A liquid outlet is provided in the middle of the lower housing 13, and a second filter screen 4 is provided at the liquid outlet. The pore size of the second filter screen 4 is smaller than that of the first filter screen 2. The liquid outlet is located in the middle of the second filtration channel 113 so that the cutting coolant passing through the second filtration channel 113 enters the liquid outlet. The liquid outlet is provided with the second filter screen 4. This application does not limit the shape of the second filter screen 4; the mesh size of the second filter screen 4 can be round, square, or diamond-shaped. The mesh size of the second filter screen 4 is between 180 and 250 mesh. In one example, the mesh size of the second filter screen 4 is 200 mesh. The pore size of the second filter screen 4 is smaller than that of the first filter screen 2, which can further filter impurities.

[0047] Reference Figures 1-5 , Figure 5This illustration shows a partial structural diagram of a diamond wire cutting machine according to an embodiment of this application (the arrows indicate the flow direction of the cutting coolant). This application also includes a diamond wire cutting machine comprising the filtration device described in any of the above claims. The filtration device is disposed at the outlet end of the cutting coolant of the diamond wire cutting machine. The filtration device includes a housing 1, a first filter screen 2, and a magnetic filter element 3. The housing 1 has a liquid channel 11 for receiving and guiding the cutting coolant. The liquid channel includes a first filter channel 112 and a second filter channel 113 arranged sequentially along a first direction, which intersects the height direction of the diamond wire cutting machine. Along the flow direction of the cutting coolant, the second filter channel 113 is located downstream of the first filter channel 112. The first filter screen 2 is disposed in the first filter channel 112 and connected to the housing 1. The magnetic filter element 3 is disposed in the second filter channel 113 and located downstream of the first filter screen 2. The magnetic filter element 3 is used to magnetically adsorb metal impurities in the cutting coolant after passing through the first filter screen 2.

[0048] This application includes a first filter screen 2 and a magnetic filter element 3. For impurities generated during the diamond wire cutting and grinding process, the first filter screen 2 filters out impurities such as broken silicon wafers and resin strips, while the magnetic filter element 3 magnetically adsorbs and filters out metal impurities generated by diamond wire wear, achieving secondary filtration. This effectively filters out small diamond wire metal impurities, reducing the amount of metal impurities entering the internal cooling circulation system under the influence of the cutting coolant. This reduces abnormalities such as wire skipping and wire breakage in the diamond wire cutting machine, and minimizes the loss of silicon material and diamond wire. Furthermore, the first filter channel 112 and the second filter channel 113 are intersected with the height direction of the diamond wire cutting machine, which slows down the speed of the cutting coolant in the first filter channel 112 and the second filter channel 113, further improving the filtration effect.

[0049] In some optional embodiments, the inner cavity of the diamond wire cutting machine is also provided with a guide pipe 5. One end of the guide pipe 5 is connected to the liquid collection box 6, and the other end of the guide pipe 5 faces the filter device, so as to facilitate the flow of cutting coolant from the liquid collection box 6 into the filter device, avoid the cutting coolant flowing around and affecting the cutting of the cutting machine, and improve the effect of the cutting coolant flowing into the filter device from the liquid collection box 6.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A filtration device, characterized in that, The filter device, used for connection to the outlet of the cutting coolant of a diamond wire cutting machine, includes: The housing (1) is provided with a liquid channel (11) for receiving and guiding the cutting coolant; the liquid channel includes a first filter channel (112) and a second filter channel (113) arranged sequentially along a first direction, the first direction intersecting the height direction of the diamond wire cutter, along the flow direction of the cutting coolant, the second filter channel (113) being located downstream of the first filter channel (112); The first filter screen (2) is disposed in the first filter channel (112) and connected to the housing (1); A magnetic filter element (3) is disposed in the second filter channel (113) for magnetically adsorbing metal impurities in the cutting coolant after passing through the first filter screen (2).

2. The filtration device according to claim 1, characterized in that, The bottom wall of the second filter channel (113) forms a step with the bottom wall of the first filter channel (112), and the height of the bottom wall of the second filter channel (113) is higher than the height of the bottom wall of the first filter channel (112).

3. The filtration device according to claim 1, characterized in that, The liquid channel (11) further includes an inlet channel (111) arranged along a second direction. The inlet end of the inlet channel (111) is higher than the outlet end of the inlet channel (111). The second direction intersects with the first direction. The outlet end of the inlet channel (111) is connected to the inlet end of the first filter channel (112).

4. The filtration device according to claim 3, characterized in that, The inlet end of the liquid inlet channel (111) is provided with a buffer plate (114), which is horizontally arranged.

5. The filtration device according to claim 3, characterized in that, The liquid inlet channel (111) is arranged in a ring shape, the first filter channel (112) is arranged in a ring shape and is located in the inner ring of the liquid inlet channel (111), and the second filter channel (113) is arranged in a ring shape and is located in the inner ring of the first filter channel (112).

6. The filtration device according to claim 2, characterized in that, The housing (1) has two mounting rings (21) in the first filter channel (112). The two mounting rings (21) are spaced apart to form a locking groove (211) for mounting the first filter screen (2). Each of the two mounting rings (21) has a flow hole (212) for the flow of cutting coolant.

7. The filtration device according to claim 2, characterized in that, The second filter channel (113) is provided with a plurality of magnetic filter elements (3), each of the magnetic filter elements (3) is elongated in the second filter channel and surrounds each other to form the same shape as the second filter channel (113), and the extension direction of the magnetic filter elements (3) is intersected with the flow direction of the cutting coolant.

8. The filtration device according to claim 2, characterized in that, The housing (1) has a plurality of spaced fixing posts (31) in the second filter channel (113), and the plurality of fixing posts (31) are used to clamp the magnetic filter element (3).

9. The filtration device according to claim 5, characterized in that, The housing (1) includes an upper shell (12) and a lower shell (13). The upper shell (12) and the lower shell (13) are spaced apart in the vertical direction to form the liquid channel (11). A liquid outlet is provided in the middle of the lower shell (13) located downstream of the liquid channel (11). A second filter screen (4) is provided at the liquid outlet. The pore size of the second filter screen (4) is smaller than that of the first filter screen (2).

10. A diamond wire cutting machine, characterized in that, Including the filtration device as described in any one of claims 1-9, The diamond wire cutting machine is also equipped with a guide pipe (5), one end of which is connected to the liquid collection box (6), and the other end of which faces the filter device, so as to introduce the cutting coolant from the liquid collection box (6) into the filter device.

Images