Cutting fluid filtering device for die steel processing

Abstract

The invention relates to a cutting fluid filtering device for die steel processing, and relates to the technical field of cutting fluid filtering for steel armours.The cutting fluid filtering device comprises a processing machine tool, a filtering box and a replaceable filter cartridge, the processing machine tool is of a cuboid structure with an opening in the upper end, a water draining opening is formed in the processing machine tool, and a recycling pipeline is connected to one side of the processing machine tool; the filter box is connected to the side, close to the water outlet, of the machine tool, and the top of the filter box is connected with a filter cartridge replacement switch. The filtering structure is simple, extra motor driving is not needed, in the cutting fluid filtering process, the flowing speed of cutting fluid cannot be affected, filtering equipment can be rapidly connected and replaced, the cloth bag is arranged between the filtering equipment and metal residues for separation, metal scraps can be rapidly collected, and meanwhile the filtering efficiency is improved. The filtering equipment does not need to be cleaned, and the filtering equipment can be prevented from being blocked.

Description

Technical Field

[0001] The present application relates to the technical field of cutting fluid filtration for steel mold processing, and in particular to a cutting fluid filtration device for mold steel processing. Background Art

[0002] In the mold steel processing industry, the use of cutting fluid is very important. During the turning, milling, drilling and other processing of mold steel, cutting fluid can cool the tool, lubricate the processing surface and flush away the chips, which helps to improve the processing accuracy and extend the tool life. Due to the high cost of tool steel processing, cutting fluids are typically recycled after cleaning to reduce production costs. However, recycling cutting fluids presents a serious problem: a large amount of impurities can be mixed into the cutting fluid. These impurities primarily originate from metal cutting chips generated during tool steel processing and debris from wear and tear of processing equipment. If these impurities are not effectively filtered, the impurities in the reused cutting fluid can exacerbate tool wear, reduce machining accuracy, and even lead to a decrease in machined surface quality, resulting in scratches, increased roughness, and other problems.

[0003] At present, most mold steel processing companies use filters to filter cutting fluids. Although this filtering method is simple and direct, it has many disadvantages. First, during the filtration process, filter residue easily accumulates on the filter screen. As processing continues, metal cutting chips continuously flow into the filter screen along with the cutting fluid, and the filter residue on the filter screen surface increases rapidly. When the filter residue accumulates to a certain extent, it will hinder the normal filtration of the cutting fluid and reduce the filtration efficiency. Secondly, some small metal cutting chips will embed into the mesh of the filter, causing the filter to become clogged. Once the filter is clogged, the flow of cutting fluid will be greatly reduced, seriously affecting the recycling effect, and may even prevent the cutting fluid from being properly supplied to the processing area, forcing the processing to be interrupted.

[0004] In order to ensure the filtering effect, the workers need to clean the filter frequently, which not only increases the labor intensity, but also affects the continuity of processing and reduces production efficiency. Moreover, frequent cleaning of the filter may also cause damage to the filter.

[0005] Therefore, in order to solve the above-mentioned related technical problems, a cutting fluid filtering device for mold steel processing is proposed, which will not be blocked, does not need to be cleaned, and can quickly replace the filter screen. Summary of the Invention

[0006] In order to improve the above problems, the present application provides a cutting fluid filtering device for mold steel processing.

[0007] This application provides a cutting fluid filtering device for die steel processing, which adopts the following technical solution: A cutting fluid filtration device for die steel processing, comprising a processing machine tool, a filter box, and a replaceable filter cartridge. The processing machine tool is a rectangular parallelepiped structure with an open top. A water outlet is provided in the processing machine tool, and a recovery pipe is connected to one side of the processing machine tool. The filter box is connected to the side of the processing machine tool near the water outlet, and a filter cartridge replacement switch is connected to the top of the filter box. Among them, a filter cartridge fixing box is provided in the filter box, and a filter cartridge connecting assembly is connected to the filter cartridge fixing box, the filter cartridge connecting assembly includes a rotating outer cylinder and a fixed inner cylinder, and the rotating outer cylinder is sleeved on the outside of the fixed inner cylinder, and the replaceable filter cartridge is inserted in the fixed inner cylinder.

[0008] Preferably, a sewage pipe inclined toward the filter box is connected below the drain outlet, one end of the sewage pipe is connected to the filter box, and the end of the sewage pipe away from the drain outlet is connected to a connecting pipe, and the end of the connecting pipe away from the sewage pipe is connected to a filter U-shaped tube.

[0009] Preferably, one end of the filter U-tube away from the connecting pipe extends into the processing machine tool, the connecting pipe and the filter U-tube are both located on a plane parallel to the top surface of the processing machine tool, and one side of the filter U-tube is connected to a plug-in tube inclined toward the filter box.

[0010] Preferably, a drainage baffle perpendicular to the plug-in tube is provided above the interface between the filter U-tube and the plug-in tube, a connecting hole is provided in the drainage baffle, the rotating outer cylinder is sleeved on one end of the plug-in tube through a bearing, and an opening and closing gear cap is fixedly sleeved on the top of the rotating outer cylinder.

[0011] By adopting the above technical solution, the cutting fluid is circulated and transported through the conveying structure of the pipeline, and the cutting fluid and the metal mixed therein enter the filter box from the drain port for filtration, and the cutting fluid and the metal mixed therein enter the sewage pipe from the drain port, and enter the filter U-shaped tube from the sewage pipe through the connecting pipe. One end of the filter U-shaped tube is connected to the filter equipment in the processing machine tool, and the cutting fluid that has been filtered out of metal and other debris impurities is sent to the filter equipment for re-filtration by the filter U-shaped tube to ensure the recycling of the cutting fluid. If there are no other impurities in the processing environment and the processing industry, one end of the filter U-shaped tube can also be connected to the recovery pipe, and the cutting fluid after filtration is sent to the cutting fluid storage device by the recovery pipe.

[0012] Preferably, a spiral lifting groove is provided on the outer side of the rotating outer cylinder, a threaded connection cylinder is provided at the bottom end of the fixed inner cylinder, and a lifting slider engaged with the spiral lifting groove is provided on the outer side of the fixed inner cylinder.

[0013] Preferably, the filter box is connected to a supplementary material box, and the supplementary material box is provided with a plurality of reserve holes engaged with replaceable filter cartridges, and the replaceable filter cartridge includes a connecting cap, a filter cartridge and a mesh bag.

[0014] Preferably, threads are provided on both the inside and outside of the connecting cap, and the filter cartridge is connected to the connecting cap via threads, and the connecting cap is connected to the threaded connecting cylinder via threads, and the mesh bag is a cylindrical mesh bag with one end open and the bottom closed, and the mesh bag is sleeved on the outside of the filter cartridge, and one end of the filter cartridge is engaged with the connecting hole.

[0015] By adopting the above technical solution, the replaceable filter cartridge can be assembled or disassembled, the mesh bag can be put on the filter cartridge, and the sealed end of the mesh bag is facing the connecting cap, and then the connecting cap is twisted and connected to the filter cartridge through the mesh bag, and the other end of the mesh bag can be glued to the other end of the filter cartridge through a small pin or glue. After the filtering work is completed, the filter cartridge can be removed from the connecting cap and the mesh bag can be removed from the filter cartridge, thereby obtaining the metal debris in the mesh bag.

[0016] Preferably, a discharge slope is provided on one side of the filter box, a discharge trough is provided in the discharge slope, one end of the rotating outer cylinder passes through the filter cartridge fixing box and is inserted into the discharge trough, and the rotating outer cylinder and the filter cartridge fixing box are slidably connected through a bearing.

[0017] Preferably, a switch slide groove is provided in the filter cartridge replacement switch, and a switch slide rod is slidably connected in the switch slide groove, one end of the switch slide rod is connected to the filter cartridge fixing box, and a limiting slide groove parallel to the tangent of the opening and closing gear cap is provided on one side of the filter cartridge fixing box.

[0018] Preferably, the bottom end of the switch slide is connected to a drive connecting block, and a limit slide engaged with a limit slide groove is provided on one side of the drive connecting block, and a drive gear plate is connected to the side of the switch slide close to the filter cartridge connecting assembly, and the drive gear plate is located on the tangent of the opening and closing gear cap, and the drive gear plate is engaged with the opening and closing gear cap.

[0019] By adopting the above technical solution, the filtering equipment can be quickly connected and replaced, and the switch slide bar is pushed to slide in the switch slide slot, and the switch slide slot drives the driving connecting block and the driving gear plate connected thereto to slide in the filter cartridge fixing box during the movement, and the driving connecting block slides along the direction of the limiting slide slot through the limit slide bar connected thereto during the movement, so that the driving gear plate can drive the opening and closing gear cap and the rotating outer cylinder connected thereto to rotate during the movement, and the rotating outer cylinder drives the spiral lifting slot on its outer side to rotate during the rotation, and the lifting slider in the spiral lifting slot will move along the direction of the spiral lifting slot, and drive the fixed inner cylinder to lift and rotate along the thread direction of the spiral lifting slot during the movement. At this time, since one end of the filter cartridge is fixed in the connecting hole, the fixed inner cylinder disconnects the connection between the connecting cap and the threaded connecting cylinder during the rising rotation.

[0020] 1. Compared with the prior art, the cutting fluid filtering device for mold steel processing has a simple filtering structure, does not require an additional motor drive, and does not affect the flow rate of the cutting fluid during the filtering process. The cutting fluid and the metal mixed therein enter the filter box from the drain port for filtration, and the cutting fluid and the metal mixed therein enter the sewage pipe from the drain port, and then enter the filtering U-shaped pipe from the sewage pipe through the connecting pipe. When the cutting fluid and the metal mixed therein enter the filtering U-shaped pipe, they first pass through the drainage baffle. The connecting hole of the plate is opened, and at this time the metal debris impurities are intercepted in the filter cartridge by the filter cartridge and the mesh bag inside it, and fall to the bottom of the mesh bag for storage, and the cutting fluid that has filtered out the metal and other debris impurities is sent to the filter equipment for re-filtration by the filter U-tube, and then the cutting fluid after filtration is sent to the cutting fluid storage device by the recovery pipe, thereby completing the recycling of the cutting fluid, and due to the structure that the oblique drainage baffle is perpendicular to the plug-in tube, the replaceable filter cartridge will not affect the flow of the cutting fluid before it is full.

[0021] 2. Compared with the prior art, this cutting fluid filter device for mold steel processing can quickly connect and replace the filtering equipment, and a cloth bag separation is provided between the filtering equipment and the metal residue, which can quickly collect metal debris without the need to clean the filtering equipment and can prevent the filtering equipment from being blocked. Since one end of the filter cartridge is fixed in the connecting hole, and the fixed inner cylinder disconnects the connection between the connecting cap and the threaded connecting cylinder during the upward rotation, if a large amount of metal is stored in the mesh bag inside it, it will slide out along the direction of the discharge chute due to gravity or can be manually pulled out, and the filter cartridge is removed from the connecting cap, and the mesh bag is removed from the filter cartridge, thereby obtaining the metal debris in the mesh bag. When the replaceable filter cartridge is inserted into the filter box, the switch slide bar can be reset to reverse the rotating outer cylinder, thereby driving the fixed inner cylinder to fix the replaceable filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the main body of this application; Figure 2 This is a structural diagram of the filter box of this application; Figure 3 This is a structural diagram of the filter cartridge fixing box of this application; Figure 4 This is a schematic structural diagram of the side section of the plug-in pipe of this application; Figure 5 This is a schematic structural diagram of the rotating outer cylinder of this application; Figure 6 This is a schematic diagram of the inverted structure of the fixed inner cylinder of the present application; Figure 7 This is a schematic structural diagram of the side section of the replaceable filter cartridge of this application; Figure 8 This is a structural diagram of the switch slide bar of this application.

[0023] The accompanying drawings are marked as follows: 1. processing machine tool; 11. drain outlet; 111. sewage pipe; 112. connecting pipe; 113. filter U-shaped pipe; 114. plug-in pipe; 115. drainage baffle; 116. connecting hole; 12. recovery pipe; 2. filter box; 21. discharge slope; 211. discharge trough; 22. replenishment box; 221. reserve hole; 3. filter cartridge replacement switch; 31. switch slide; 32. switch slide; 33. drive connecting block; 34. limit slide; 35. drive gear plate; 4. replaceable filter cartridge; 41. connecting cap; 42. filter cartridge; 43. mesh bag; 5. filter cartridge connecting assembly; 51. rotating outer cylinder; 511. opening and closing gear cap; 512. spiral lifting groove; 52. fixed inner cylinder; 521. threaded connection cylinder; 522. lifting slider; 6. filter cartridge fixing box; 61. limit slide. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] The following is combined with Figures 1-8 , further details of this application are given.

[0026] A cutting fluid filtering device for die steel processing, comprising a processing machine tool 1, a filter box 2 and a replaceable filter cartridge 4, Figure 1 and Figure 4 The processing machine tool 1 is a rectangular parallelepiped structure with an open top. A water outlet 11 is provided in the processing machine tool 1, and a recovery pipe 12 is connected to one side of the processing machine tool 1. The filter box 2 is connected to the side of the processing machine tool 1 near the water outlet 11, and a filter cartridge replacement switch 3 is connected to the top of the filter box 2; Among them, a filter cartridge fixing box 6 is provided in the filter box 2, and a filter cartridge connecting assembly 5 is connected to the filter cartridge fixing box 6, the filter cartridge connecting assembly 5 includes a rotating outer cylinder 51 and a fixed inner cylinder 52, and the rotating outer cylinder 51 is sleeved on the outside of the fixed inner cylinder 52, and the replaceable filter cartridge 4 is inserted into the fixed inner cylinder 52; the processing machine tool 1 is a workbench for mold steel processing, and a groove for collecting falling cutting fluid and metal debris is provided on the top thereof, and the water outlet 11 is located at the lowest point of the groove. The cutting fluid and the metal mixed therein enter the filter box 2 through the water outlet 11 for filtration, and the filtered metal debris is stored in the replaceable filter cartridge 4, and the replaceable filter cartridge 4 can be locked and released by the filter cartridge replacement switch 3 for subsequent replacement.

[0027] Reference Figure 3 A sewage pipe 111 is connected to the bottom of the drain port 11 and is inclined toward the filter box 2. One end of the sewage pipe 111 is connected to the filter box 2, and the end of the sewage pipe 111 away from the drain port 11 is connected to a connecting pipe 112. The end of the connecting pipe 112 away from the sewage pipe 111 is connected to a filter U-shaped tube 113; the cutting fluid and the metal mixed therein enter the sewage pipe 111 from the drain port 11, and enter the filter U-shaped tube 113 from the sewage pipe 111 via the connecting pipe 112.

[0028] Reference Figure 3, the filter U-shaped tube 113 extends into the processing machine tool 1 at one end away from the connecting pipe 112, and the connecting pipe 112 and the filter U-shaped tube 113 are both located on a plane parallel to the top surface of the processing machine tool 1. One side of the filter U-shaped tube 113 is connected to a plug-in tube 114 inclined toward the filter box 2; other equipment for filtering impurities in the cutting fluid is provided in the processing machine tool 1, such as a centrifuge for oil-water separation or a solid-liquid separation device for filtering dust and mud, and these are all conventional equipment for liquid filtration and purification, which will not be described in detail here. One end of the filter U-shaped tube 113 is connected to the filtering device in the processing machine tool 1, and the cutting fluid that has been filtered out of metal and other debris impurities is sent to the filtering device by the filter U-shaped tube 113 for re-filtration to ensure the recycling of the cutting fluid. If there are no other impurities in the processing environment and the processing industry, one end of the filter U-shaped tube 113 can also be connected to the recovery pipe 12, and the cutting fluid after filtration is sent to the cutting fluid storage device by the recovery pipe 12.

[0029] Reference Figure 3 、 Figure 4 and Figure 5 A drainage baffle 115 perpendicular to the plug-in tube 114 is provided above the interface between the filtering U-tube 113 and the plug-in tube 114, and a connecting hole 116 is provided in the drainage baffle 115. The rotating outer cylinder 51 is sleeved on one end of the plug-in tube 114 through a bearing, and an opening and closing gear cap 511 is fixedly sleeved on the top of the rotating outer cylinder 51; when the cutting fluid and the metal mixed therein enter the filtering U-tube 113, they first pass through the connecting hole 116 of the drainage baffle 115, and the rotating outer cylinder 51 can rotate freely on the outside of the plug-in tube 114, and due to the structure that the oblique drainage baffle 115 is perpendicular to the plug-in tube 114, the replaceable filter cartridge 4 will not affect the flow of the cutting fluid until it is full.

[0030] Reference Figure 5 and Figure 6 A spiral lifting groove 512 is provided on the outer side of the rotating outer cylinder 51, a threaded connection cylinder 521 is provided at the bottom end of the fixed inner cylinder 52, and a lifting slider 522 is provided on the outer side of the fixed inner cylinder 52 to be engaged with the spiral lifting groove 512; when the rotating outer cylinder 51 rotates, it drives the spiral lifting groove 512 on its outer side to rotate, and the lifting slider 522 in the spiral lifting groove 512 will move along the direction of the spiral lifting groove 512, and in the process of movement, it drives the fixed inner cylinder 52 to be lifted and rotated along the thread direction of the spiral lifting groove 512.

[0031] Reference Figure 2 and Figure 7The filter box 2 is connected to a supplementary material box 22, and the supplementary material box 22 is provided with multiple groups of reserve holes 221 that are engaged with the replaceable filter cartridge 4. The replaceable filter cartridge 4 includes a connecting cap 41, a filter cartridge 42 and a mesh bag 43. The replaceable filter cartridge 4 prepared in advance can be placed on the supplementary material box 22, so that when the replaceable filter cartridge 4 needs to be replaced, it can be quickly taken out and replaced, and the replaceable filter cartridges 4 in the multiple groups of reserve holes 221 can be filter cartridges with different filter hole sizes, so as to be suitable for various collection needs, and the filtered metal residues are all stored in the mesh bag 43.

[0032] Reference Figure 1 and Figure 8 The filter cartridge 42 is then screwed onto the filter housing 42 so that the filter housing 42 can be easily removed.

[0033] Reference Figure 2 、 Figure 3 and Figure 7 The filter box 2 is provided with a discharge slope 21 on one side, and a discharge trough 211 is provided in the discharge slope 21. One end of the rotating outer cylinder 51 passes through the filter cartridge fixing box 6 and is inserted into the discharge trough 211, and the rotating outer cylinder 51 is slidably connected to the filter cartridge fixing box 6 through a bearing; when replacing the replaceable filter cartridge 4, the spliced ​​replaceable filter cartridge 4 can be inserted into the discharge trough 211 of the discharge slope 21, and the replaceable filter cartridge 4 is pushed into the fixed inner cylinder 52 of the filter cartridge connecting assembly 5 along the direction of the discharge trough 211, and one end of the filter cartridge 42 is inserted into and embedded in the connecting hole 116 of the drainage baffle 115. When the cutting fluid passes through the drainage baffle 115, the metal debris and impurities are intercepted in the filter cartridge 42 by the filter cartridge 42 and the mesh bag 43 inside it, and fall to the bottom of the mesh bag 43 for storage, and the rotating outer cylinder 51 can rotate freely in the filter cartridge fixing box 6.

[0034] Reference Figure 3 and Figure 8, a switch slide 31 is provided in the filter cartridge replacement switch 3, and a switch slide rod 32 is slidably connected in the switch slide 31, one end of the switch slide rod 32 is connected to the filter cartridge fixing box 6, and a side of the filter cartridge fixing box 6 is provided with a limiting slide 61 parallel to the tangent of the opening and closing gear cap 511; the bottom end of the switch slide rod 32 is connected to a driving connection block 33, and a side of the driving connection block 33 is provided with a limiting slide rod 34 engaged with the limiting slide groove 61, and the side of the switch slide rod 32 close to the filter cartridge connecting assembly 5 is connected to a driving gear plate 35, and the driving gear plate 35 is located at the opening On the tangent of the closing gear cap 511, the driving gear plate 35 is engaged with the opening and closing gear cap 511; the switch slide rod 32 can be pushed to slide in the switch slide groove 31, and the switch slide groove 31 drives the driving connection block 33 and the driving gear plate 35 connected thereto to slide in the filter cartridge fixing box 6 during the movement, and the driving connection block 33 slides along the direction of the limiting slide groove 61 through the limiting slide rod 34 connected thereto during the movement, so that the driving gear plate 35 can drive the opening and closing gear cap 511 to rotate during the movement.

[0035] The working process of the present application is as follows: first, the cutting fluid and the metal mixed therein enter the filter box 2 from the drain port 11 for filtration, and then the cutting fluid and the metal mixed therein enter the sewage pipe 111 from the drain port 11, and then enter the filtering U-shaped tube 113 via the connecting tube 112 from the sewage pipe 111. When the cutting fluid and the metal mixed therein enter the filtering U-shaped tube 113, they first pass through the connecting hole 116 of the drainage baffle 115, and at this time, the metal debris impurities are intercepted in the filtering cartridge 42 by the filter cartridge 42 and the mesh bag 43 therein, and fall to the bottom of the mesh bag 43 for storage, and the cutting fluid that has been filtered out of the metal and other debris impurities is sent to the filtering equipment by the filtering U-shaped tube 113 for re-filtration, and then the cutting fluid after filtration is sent to the cutting fluid storage equipment by the recovery pipe 12, thereby completing the recycling of the cutting fluid; The replaceable filter cartridge 4 can be replaced regularly by pushing the switch slide bar 32 to slide in the switch slide groove 31. The switch slide groove 31 drives the driving connection block 33 and the driving gear plate 35 connected thereto to slide in the filter cartridge fixing box 6 during the movement. The driving connection block 33 slides along the direction of the limiting slide groove 61 through the limiting slide bar 34 connected thereto during the movement, so that the driving gear plate 35 can drive the opening and closing gear cap 511 and the rotating outer cylinder 51 connected thereto to rotate during the movement, and the rotating outer cylinder 51 drives the outer gear cap 511 and the rotating outer cylinder 51 to rotate during the rotation. As the spiral lifting groove 512 rotates, the lifting slider 522 in the spiral lifting groove 512 moves along the direction of the spiral lifting groove 512, and during the movement, the fixed inner cylinder 52 is driven to lift and rotate along the thread direction of the spiral lifting groove 512. At this time, since one end of the filter cartridge 42 is fixed in the communicating hole 116, the fixed inner cylinder 52 is disconnected from the connection cap 41 and the threaded connection cylinder 521 during the upward rotation process. At this time, if a large amount of metal is stored in the mesh bag 43 therein, it will slide out along the direction of the discharge chute 211 due to gravity or can be manually pulled out. At this time, the filter cartridge 42 can be removed from the connecting cap 41, and the mesh bag 43 can be removed from the filter cartridge 42, so as to obtain the metal debris in the mesh bag 43, and the replaceable filter cartridge 4 on the replenishing material box 22 can be installed in the filter box 2. When the replaceable filter cartridge 4 is inserted into the filter box 2, the switch slide bar 32 can be reset to reverse the rotating outer cylinder 51, thereby driving the fixed inner cylinder 52 to fix the replaceable filter cartridge 4. The replaceable filter cartridge 4 can be assembled or disassembled, and the mesh bag 43 can be put on the filter cartridge 42, with the sealed end of the mesh bag 43 facing the connecting cap 41. Then, the connecting cap 41 is twisted and connected to the filter cartridge 42 through the mesh bag 43, and the other end of the mesh bag 43 can be glued to the other end of the filter cartridge 42 through a small pin or glue.

[0036] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A cutting fluid filtering device for die steel processing, comprising a processing machine tool (1), a filter box (2) and a replaceable filter cartridge (4), characterized in that: The processing machine tool (1) is a rectangular parallelepiped structure with an open top. A water outlet (11) is provided in the processing machine tool (1), and a recovery pipe (12) is connected to one side of the processing machine tool (1). The filter box (2) is connected to a side of the processing machine tool (1) close to the water outlet (11), and a filter cartridge replacement switch (3) is connected to the top of the filter box (2). The filter box (2) is provided with a filter cartridge fixing box (6), and the filter cartridge fixing box (6) is connected to a filter cartridge connecting assembly (5), the filter cartridge connecting assembly (5) comprising a rotating outer cylinder (51) and a fixed inner cylinder (52), the rotating outer cylinder (51) being sleeved on the outside of the fixed inner cylinder (52), and the replaceable filter cartridge (4) being inserted into the fixed inner cylinder (52).

2. A cutting fluid filtering device for die steel processing according to claim 1, characterized in that: A sewage pipe (111) is connected below the drain port (11) and is inclined toward the filter box (2). One end of the sewage pipe (111) is connected to the filter box (2), and the end of the sewage pipe (111) away from the drain port (11) is connected to a connecting pipe (112). The end of the connecting pipe (112) away from the sewage pipe (111) is connected to a filtering U-shaped pipe (113).

3. A cutting fluid filtering device for die steel processing according to claim 2, characterized in that: One end of the filtering U-shaped tube (113) away from the connecting tube (112) extends into the processing machine tool (1); the connecting tube (112) and the filtering U-shaped tube (113) are both located on a plane parallel to the top surface of the processing machine tool (1); one side of the filtering U-shaped tube (113) is connected to a plug-in tube (114) inclined toward the filter box (2).

4. A cutting fluid filtering device for die steel processing according to claim 3, characterized in that: A drainage baffle (115) perpendicular to the plug-in tube (114) is provided above the interface between the filtering U-tube (113) and the plug-in tube (114), and a communication hole (116) is provided in the drainage baffle (115). The rotating outer cylinder (51) is sleeved on one end of the plug-in tube (114) via a bearing, and an opening and closing gear cap (511) is fixedly sleeved on the top end of the rotating outer cylinder (51).

5. The cutting fluid filtering device for mold steel processing according to claim 4, characterized in that: A spiral lifting groove (512) is provided on the outer side of the rotating outer cylinder (51), a threaded connection cylinder (521) is provided at the bottom end of the fixed inner cylinder (52), and a lifting slider (522) engaged with the spiral lifting groove (512) is provided on the outer side of the fixed inner cylinder (52).

6. The cutting fluid filtering device for die steel processing according to claim 5, characterized in that: The filter box (2) is connected to a supplementary material box (22), and the supplementary material box (22) is provided with a plurality of reserve holes (221) that engage with replaceable filter cartridges (4). The replaceable filter cartridges (4) include a connecting cap (41), a filter cartridge (42), and a mesh bag (43).

7. A cutting fluid filtering device for die steel processing according to claim 6, characterized in that: The connecting cap (41) is provided with threads on both the inside and outside, and the filter cartridge (42) is connected to the connecting cap (41) through threads, and the connecting cap (41) is connected to the threaded connecting cylinder (521) through threads, and the mesh bag (43) is a cylindrical mesh bag with one end open and a bottom closed, and the mesh bag (43) is sleeved on the outside of the filter cartridge (42), and one end of the filter cartridge (42) is engaged with the connecting hole (116).

8. The cutting fluid filtering device for mold steel processing according to claim 1, characterized in that: A material discharge slope (21) is provided on one side of the filter box (2), a material discharge trough (211) is provided in the material discharge slope (21), one end of the rotating outer cylinder (51) passes through the filter cartridge fixing box (6) and is inserted into the material discharge trough (211), and the rotating outer cylinder (51) and the filter cartridge fixing box (6) are slidably connected via a bearing.

9. The cutting fluid filtering device for die steel processing according to claim 4, characterized in that: A switch slide (31) is provided in the filter cartridge replacement switch (3), and a switch slide rod (32) is slidably connected in the switch slide rod (31), one end of the switch slide rod (32) is connected to the filter cartridge fixing box (6), and a limiting slide groove (61) parallel to the tangent of the opening and closing gear cap (511) is provided on one side of the filter cartridge fixing box (6).

10. The cutting fluid filtering device for mold steel processing according to claim 9, characterized in that: The bottom end of the switch slide bar (32) is connected to a driving connection block (33), and a limiting slide bar (34) engaged with a limiting slide groove (61) is provided on one side of the drive connection block (33). The side of the switch slide bar (32) close to the filter cartridge connection assembly (5) is connected to a driving gear plate (35), and the driving gear plate (35) is located on a tangent line of the opening and closing gear cap (511), and the driving gear plate (35) is engaged with the opening and closing gear cap (511).

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