Filtering device for grinding machine cooling system

Abstract

The utility model relates to the technical field of workpiece machining equipment, in particular to a filtering device for a grinding machine cooling system, which comprises a water inlet pipe, a water outlet pipe, a first pipeline and a second pipeline, two ends of the first pipeline are respectively communicated with the water inlet pipe and the water outlet pipe, and a first ball valve is detachably arranged on the first pipeline; the two ends of the second pipeline are communicated with the water inlet pipe and the water outlet pipe respectively, and a second ball valve and a first impurity filter used for filtering impurities are detachably arranged on the second pipeline. According to the filtering device for the grinding machine cooling system, non-filtered grinding fluid or filtered grinding fluid is selectively used, and the product quality requirements of different products are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to workpiece processing equipment technical field, concretely relates to a filter device for grinding machine cooling system. BACKGROUND

[0002] Grinding machine is the machine equipment that utilizes grinding tool (for example, grinding wheel) to carry out grinding processing to workpiece surface. The grinding wheel will drop off abrasive grains in the process that grinding machine grinds workpiece, and abrasive grains will mix in grinding fluid.

[0003] Because the cooling spraying device on the existing grinding machine recycles and cyclically utilizes grinding fluid, and the filtering method (filter screen filtration) that the cooling spraying device of existing grinding machine generally adopts is poor in abrasive grain filtering effect, this leads to that abrasive grains in grinding fluid can cause tiny scratch to workpiece surface when grinding fluid sprays and cools the contact position of grinding wheel and workpiece. Because workpiece is strict to its surface, this leads to that workpiece product is unqualified. If the precision filtration system is installed on the existing grinding machine to filter abrasive grains, the investment of installing precision filtration system is big, and there is also requirement to site size. Therefore, a filter device for grinding machine cooling system is urgently needed to solve the above problems. SUMMARY

[0004] In order to solve the problem that the filtering method that the cooling spraying device of existing grinding machine generally adopts is poor in abrasive grain filtering effect, and the investment of installing precision filtration system is big, and there is also requirement to site size, the utility model provides a filter device for grinding machine cooling system, abrasive grains carried in grinding fluid are well filtered, unfiltered grinding fluid or filtered grinding fluid can be selectively used according to different processing requirements of different workpieces, and the product quality requirement of different products is met.

[0005] The utility model provides a filter device for grinding machine cooling system, including inlet pipe, outlet pipe, first pipeline and second pipeline, the both ends of first pipeline are linked with inlet pipe and outlet pipe respectively, first pipeline is detachably provided with first ball valve on, the both ends of second pipeline are linked with inlet pipe and outlet pipe respectively, second pipeline is detachably provided with second ball valve and first impurity filter for filtering impurity on. When carrying out rough processing to workpiece, open first ball valve, close second ball valve, grinding fluid in liquid tank passes through inlet pipe, first pipeline and outlet pipe, and then directly returns to cooling spraying device, and waits for next spraying. When carrying out finish processing to workpiece, close first ball valve, open second ball valve, and grinding fluid can remove impurity after passing through first impurity filter on second pipeline.

[0006] Further, the impurity filter comprises a dustproof outer shell, a transparent inner shell and a filter core, the dustproof outer shell comprises a lower shell and an upper cover, one end of the lower shell and the upper cover is rotatably connected through a hinge, the other end of the lower shell and the upper cover is fixedly connected through a plug-in lock assembly, a fixed channel is formed between the lower shell and the upper cover, a U-shaped frame is arranged on the lower shell and located in the fixed channel, the transparent inner shell is detachably arranged on the U-shaped frame, both ends of the transparent inner shell pass out of the fixed channel and are fixedly connected with the second pipeline, and the filter core is detachably arranged inside the transparent inner shell. When the upper cover is rotated relative to the lower shell, the upper cover is in an open rotation state, the state of the filter core inside the transparent inner shell can be seen, and the filter core can be cleaned or replaced in time.

[0007] Further, both ends of the transparent inner shell are provided with first openings, both ends of the transparent inner shell pass out of the fixed channel and the two first openings thereon are fixedly connected with the second pipeline; a plurality of support columns are annularly arranged in the transparent inner shell, a filter channel is formed between the plurality of support columns, the filter core is clamped into the filter channel, a sealing ring plate and a water outlet plate are respectively arranged in the two first openings of the transparent inner shell, a plurality of water outlets are annularly arranged on the water outlet plate and located outside the center of the water outlet plate, the plurality of water outlets are communicated with the filter channel, one end of the filter core is located at the center of the sealing ring plate and the other end abuts against the center of the water outlet plate, and the filter core adopts an annular sheet filter core. The grinding fluid enters the filter core through the second pipeline, after being filtered by the filter core, the filtered grinding fluid flows out of the second pipeline again through the filter channel and the plurality of water outlets.

[0008] Further, the plug-in lock assembly comprises a plug-in handle and two plug-in lock pieces, the two plug-in lock pieces are respectively arranged at the ends of the lower shell and the upper cover away from the hinge, plug-in holes are arranged on the two plug-in lock pieces, and the end of the plug-in handle passes through the two plug-in holes. When the end of the plug-in handle passes through the two plug-in holes, the lower shell and the upper cover are fixedly connected. Conversely, when the upper cover is opened, the plug-in handle is taken out of the two plug-in holes.

[0009] Further, semicircular notches are arranged on the corresponding end faces of the lower shell and the upper cover, and both ends of the transparent inner shell pass out of the fixed channel from the semicircular notches on the lower shell and the upper cover. When the lower shell and the upper cover are fixedly connected, both ends of the transparent inner shell pass out of the fixed channel from the semicircular notches on the lower shell and the upper cover. Conversely, when the upper cover is opened, both ends of the transparent inner shell are located in the semicircular notches of the lower shell.

[0010] Further, the connection point of the first pipe and the water inlet pipe and the connection point of the second pipe and the water inlet pipe are communicated, the connection point of the first pipe and the water outlet pipe and the connection point of the second pipe and the water outlet pipe are communicated, and the first pipe, the second pipe, the connection of the first pipe and the water inlet pipe and the connection of the first pipe and the water outlet pipe are all provided with three-way ball valves. When the workpiece is roughed or finished, the two three-way ball valves are opened.

[0011] Further, the second pipe is further provided with a fifth ball valve, the first impurity filter is located between the second ball valve and the fifth ball valve, the second ball valve is located at the water inlet side of the first impurity filter, the fifth ball valve is located at the water outlet side of the first impurity filter, the second pipe is provided with a third pipe in parallel, the third pipe is provided with a third ball valve and a second impurity filter, the third ball valve is located at the water inlet side of the second impurity filter, a fourth pipe is arranged between the second pipe and the third pipe, one end of the fourth pipe is located between the third ball valve and the second impurity filter, the other end of the fourth pipe is located between the first impurity filter and the fifth ball valve, and the fourth pipe is provided with a fourth ball valve; the second impurity filter and the first impurity filter are the same or different in structure.

[0012] Further, when the second impurity filter and the first impurity filter are different in structure, the second impurity filter comprises a barrel type filter screen, a first shell and a second shell which are detachably connected, the barrel type filter screen is arranged between the first shell and the second shell and located in a cavity formed between the first shell and the second shell, and the first shell and the second shell are both connected with the third pipe and the third pipe is communicated with the inside of the barrel type filter screen and the cavity. The filtered grinding fluid enters the second impurity filter through the third pipe, and after the barrel type filter screen filters the grinding fluid, the grinding fluid is discharged into the third pipe through the cavity.

[0013] Further, the first shell is provided with a first joint communicated with the inside of the barrel type filter screen, the water outlet pipe is provided with a second joint matched with the first joint, and the first joint and the second joint are threadedly connected; the second shell is provided with a third joint communicated with the cavity, the third pipe is provided with a fourth joint matched with the third joint, and the third joint and the fourth joint are threadedly connected. After the first joint and the second joint and the third joint and the fourth joint are screwed, the second impurity filter is fixed to the third pipe.

[0014] Further, the inner wall of the first shell is provided with an annular clamping groove, the top of the barrel type filter screen is provided with an annular protrusion which is upwardly extended and clamped in the annular clamping groove. The barrel type filter screen is clamped in the first shell through the annular protrusion and the annular clamping groove, and when the first shell and the second shell are screwed, the barrel type filter screen is located in the cavity.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] When rough machining is carried out to the workpiece, the first ball valve is opened, and the second ball valve, the third ball valve and the fourth ball valve are closed, at this time, the grinding fluid in the liquid tank passes through the water inlet pipe, the first pipeline and the water outlet pipe, and then returns to the cooling spraying device directly, waiting for the next spraying.

[0017] When finish machining is carried out to the workpiece, the first ball valve is always closed, the second ball valve and the fifth ball valve are opened, and the third ball valve and the fourth ball valve are closed, at this time, the grinding fluid in the liquid tank passes through the water inlet pipe, the second pipeline and the water outlet pipe, and then returns to the cooling spraying device, the grinding fluid is filtered through the first impurity filter on the second pipeline, and the impurities in the grinding fluid can be removed. When the first impurity filter is damaged or needs to be replaced, the second ball valve, the fifth ball valve and the fourth ball valve are closed, and the third ball valve is opened, at this time, the grinding fluid in the liquid tank passes through the water inlet pipe, the third pipeline and the water outlet pipe, and then returns to the cooling spraying device, the grinding fluid is filtered through the second impurity filter on the third pipeline, and the impurities in the grinding fluid can be removed, avoiding that the first impurity filter is damaged and affecting normal work. When the requirement for the grinding fluid is higher, the fifth ball valve and the third ball valve can be closed, and the second ball valve and the fourth ball valve are opened, at this time, the first impurity filter and the second impurity filter become series connection, and the filter pore diameter of the second impurity filter is smaller than that of the first impurity filter, the grinding fluid is firstly filtered through the first impurity filter, and then further filtered through the second impurity filter, the first impurity filter and the second impurity filter can also work simultaneously, realizing secondary filtration of the grinding fluid. The filtering device can filter the abrasive grains carried in the grinding fluid, the unfiltered grinding fluid or the filtered grinding fluid can be selectively used according to different machining requirements of different workpieces, the yield quality requirements of different products can be met, the use rate of the first impurity filter and the second impurity filter is reduced, the cleaning or replacement frequency of the first impurity filter and the second impurity filter is reduced, and therefore the work load and use cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of a filtering device for a grinding machine cooling system of the utility model;

[0019] Figure 2 is a sectional view structural schematic view of the first impurity filter of the utility model;

[0020] Figure 3 is a side view structural schematic view of the dustproof shell of the utility model;

[0021] Figure 4 is a structural enlarged view of A of the utility model Figure 1

[0022] Figure 5 ​is the second impurity filter's sectional view structure schematic diagram of the utility model;

[0023] The reference signs in the drawings are:

[0024] 1, inlet pipe; 2, outlet pipe; 3, first pipeline; 31, first ball valve; 4, second pipeline; 41, second ball valve; 5, three-way ball valve; 6, plug-in lock assembly; 61, plug-in handle; 62, plug-in lock piece; 7, first impurity filter; 71, filter core; 72, transparent inner shell; 721, support column; 722, sealing ring plate; 723, water outlet plate; 73, lower shell; 731, U-shaped frame; 74, upper cover body; 8, third pipeline; 81, third ball valve; 82, second impurity filter; 821, barrel type filter screen; 8211, annular protrusion; 822, first shell; 8221, first joint; 8222, annular clamping groove; 823, second shell; 8231, third joint; 9, fourth pipeline; 91, fourth ball valve. DETAILED DESCRIPTION

[0025] The utility model is further explained below in combination with the drawings and specific embodiment.

[0026] As Figures 1 to 5 Indicated, a kind of filtering device for grinder cooling system, including inlet pipe 1, outlet pipe 2, first pipeline 3 and second pipeline 4, the inlet pipe 1 is communicated with the liquid tank on grinder, the outlet pipe 2 is communicated with the cooling spray device on grinder, and the cooling spray device on grinder sprays out grinding fluid, and the main function of liquid tank is to receive the grinding fluid sprayed by cooling spray device, and the grinding fluid in this embodiment is recycled and recycled. The two ends of the first pipeline 3 are communicated with inlet pipe 1 and outlet pipe 2 respectively, and the first ball valve 31 is detachably arranged on the first pipeline 3;The two ends of the second pipeline 4 are communicated with inlet pipe 1 and outlet pipe 2 respectively, and the second ball valve 41 and the first impurity filter 7 for filtering impurities are detachably arranged on the second pipeline 4;

[0027] The fifth ball valve 42 is arranged on the second pipeline 4, the first impurity filter 7 is arranged between the second ball valve 41 and the fifth ball valve 42, the second ball valve 41 is arranged on the water inlet side of the first impurity filter 7, the fifth ball valve 42 is arranged on the water outlet side of the first impurity filter 7, the third pipeline 8 is arranged in parallel with the second pipeline 4, the third ball valve 81 and the second impurity filter 82 are arranged on the third pipeline 8, the third ball valve 81 is arranged on the water inlet side of the second impurity filter 82, the fourth pipeline 9 is arranged between the second pipeline 4 and the third pipeline 8, one end of the fourth pipeline 9 is arranged between the third ball valve 81 and the second impurity filter 82, the other end of the fourth pipeline 9 is arranged between the first impurity filter 7 and the fifth ball valve 42, and the fourth ball valve 91 is arranged on the fourth pipeline 9; the second impurity filter 82 and the first impurity filter 7 are the same or different in structure.

[0028] When the workpiece is rough machined, the first ball valve 31 is opened, and the second ball valve 41, the third ball valve 81 and the fourth ball valve 91 are closed, at this time, the grinding fluid in the liquid tank passes through the water inlet pipe 1, the first pipeline 3 and the water outlet pipe 2, and then directly returns to the cooling spraying device, and waits for the next spraying.

[0029] When the workpiece is finished, the first ball valve 31 is always closed. The first impurity filter 7 and the second impurity filter 82 can work independently to avoid affecting the normal work when one is damaged; the first impurity filter 7 and the second impurity filter 82 can also work simultaneously to realize the secondary filtration of the grinding fluid.

[0030] When the first impurity filter 7 works independently, the second ball valve 41 and the fifth ball valve 42 are opened, and the third ball valve 81 and the fourth ball valve 91 are closed, at this time, the grinding fluid in the liquid tank passes through the water inlet pipe 1, the second pipeline 4, the first impurity filter 7 and the water outlet pipe 2, and then returns to the cooling spraying device after being filtered by the first impurity filter 7, the first impurity filter 7 can remove the impurities in the grinding fluid, and the grinding fluid waits for the next spraying. The first impurity filter 7 realizes the filtration of the grinding fluid.

[0031] When the first impurity filter 7 is damaged or needs to be replaced, the second impurity filter 82 works independently, the third ball valve 81 is opened, the fourth ball valve 91, the second ball valve 41 and the fifth ball valve 42 are closed, at this time, the grinding fluid in the liquid tank passes through the water inlet pipe 1, the third pipeline 8, the second impurity filter 82 and the water outlet pipe 2. The second impurity filter 82 realizes the filtration of the grinding fluid.

[0032] When the requirement of the grinding fluid is higher, the first impurity filter 7 and the second impurity filter 82 work simultaneously, the second ball valve 41 and the fourth ball valve 91 are opened, the fifth ball valve 42 and the third ball valve 81 are closed, at this time the grinding fluid in the liquid tank passes through the water inlet pipe 1, the second pipeline 4, the first impurity filter 7, the fourth pipeline 9, the third pipeline 8, the second impurity filter 82 and the water outlet pipe 2. At this time the first impurity filter 7 and the second impurity filter 82 become series connection, and the filter aperture of the second impurity filter 82 is smaller than the filter aperture of the first impurity filter 7, the grinding fluid is filtered preliminarily by the first impurity filter 7, and then is further filtered by the second impurity filter 82, the first impurity filter 7 and the second impurity filter 82 work simultaneously to realize the secondary filtration of the grinding fluid.

[0033] The filtering device of the embodiment can filter the abrasive particles carried by the grinding fluid well, and can selectively use the unfiltered grinding fluid or the filtered grinding fluid according to different machining requirements of different workpieces, so that the quality requirements of different products can be met, the use rate of the first impurity filter 7 and the second impurity filter 82 is reduced, the cleaning or replacement frequency thereof is reduced, and thus the workload and use cost are reduced. The investment for the modification of the installation of a large filtering system is also saved.

[0034] As an implementable manner, the first impurity filter 7 comprises a dustproof shell, a transparent inner shell 72 and a filter core 71. The dustproof shell comprises a lower shell 73 and an upper cover body 74, one end of the lower shell 73 and the upper cover body 74 is rotationally connected through a hinge, the other end of the lower shell 73 and the upper cover body 74 is fixedly connected through a mortise lock assembly 6, a fixed channel is formed between the lower shell 73 and the upper cover body 74, a U-shaped bracket 731 is arranged on the lower shell 73 and located in the fixed channel, the lower shell 73 is clamped in the U-shaped bracket 731, and the lower shell 73 and the U-shaped bracket 731 are detachably connected through a third bolt and a nut, the transparent inner shell 72 is detachably arranged on the U-shaped bracket 731, both ends of the transparent inner shell 72 pass out to the outside of the fixed channel and are fixedly connected with the second pipeline 4, and the filter core 71 is detachably arranged in the transparent inner shell 72. In use, the transparent inner shell 72 is fixed on the U-shaped bracket 731, the transparent inner shell 72 is fixedly connected with the second pipeline 4, and then the first impurity filter 7 is integrally fixed on the second pipeline 4. The upper cover body 74 is rotated relative to the lower shell 73, the upper cover body 74 is in an open rotation state, the state of the filter core 71 in the transparent inner shell 72 can be seen, and the filter core 71 can be cleaned or replaced in time. When the filter core 71 needs to be replaced, the transparent inner shell 72 is first detached from the second pipeline 4, then the transparent inner shell 72 is detached from the lower shell 73, and finally the filter core 71 is conveniently detached from the transparent inner shell 72.

[0035] As an implementation, both ends of the transparent inner shell 72 are provided with first openings, both ends of the transparent inner shell 72 pass out to the outside of the fixed channel, and the two first openings on the transparent inner shell 72 are fixedly connected with the second pipeline 4; a plurality of support columns 721 are annularly arranged in the transparent inner shell 72, and a filtering channel is formed between the plurality of support columns 721, the filter core 71 is clamped into the filtering channel, a sealing ring plate 722 and a water outlet plate 723 are respectively arranged in the two first openings of the transparent inner shell 72, a plurality of water outlets are annularly arranged on the water outlet plate 723 and located outside the center of the water outlet plate 723, the plurality of water outlets are communicated with the filtering channel, one end of the filter core 71 is located at the center of the sealing ring plate 722, and the other end abuts against the center of the water outlet plate 723. The structure of the filter core 71 is a prior art, and will not be described in detail here. The filter core 71 of the embodiment adopts a ring-shaped sheet filter core. The filter core 71 of the embodiment is clamped into or taken out of the filtering channel, so that the filter core 71 is detachable inside the transparent inner shell 72. When the filter core 71 is clamped into the filtering channel, one end of the filter core 71 is located at the center of the sealing ring plate 722, and the other end abuts against the center of the water outlet plate 723. The grinding fluid enters the filter core 71 through the second pipeline 4, and after being filtered by the filter core 71, the filtered grinding fluid flows out of the second pipeline 4 again through the filtering channel and the plurality of water outlets.

[0036] As an implementation, a first flange plate is arranged outside each of the first openings, two second flange plates are oppositely arranged on the second pipeline 4, and each of the first flange plates and the second flange plates is fixedly connected by a first bolt. The transparent inner shell 72 is fixed on the second pipeline 4 by the first flange plate, the second flange plate, the first bolt, and a nut.

[0037] As an implementation, the plug-in lock assembly 6 includes a plug-in handle 61 and two plug-in lock plates 62, the two plug-in lock plates 62 are respectively arranged at one end of the lower shell 73 and the upper cover body 74 away from the hinge, plug-in holes are arranged on the two plug-in lock plates 62, and the end of the plug-in handle 61 passes through the two plug-in holes. When the end of the plug-in handle 61 passes through the two plug-in holes, the lower shell 73 and the upper cover body 74 are fixedly connected. Conversely, to open the upper cover body 74, the plug-in handle 61 is taken out of the two plug-in holes.

[0038] As an implementation, semicircular notches are arranged on the end faces of the lower shell 73 and the upper cover body 74, and both ends of the transparent inner shell 72 pass out to the outside of the fixed channel from the semicircular notches on the lower shell 73 and the upper cover body 74. When the lower shell 73 and the upper cover body 74 are fixedly connected, both ends of the transparent inner shell 72 pass out to the outside of the fixed channel from the semicircular notches on the lower shell 73 and the upper cover body 74. Conversely, to open the upper cover body 74, both ends of the transparent inner shell 72 are located in the semicircular notches of the lower shell 73.

[0039] As an implementable mode, the connection point of the first pipeline 3 with the water inlet pipe 1 and the connection point of the second pipeline 4 with the water inlet pipe 1 are communicated, the connection point of the first pipeline 3 with the water outlet pipe 2 and the connection point of the second pipeline 4 with the water outlet pipe 2 are communicated, and the connection points of the first pipeline 3, the second pipeline 4 with the water inlet pipe 1 and the connection points of the first pipeline 3, the second pipeline 4 with the water outlet pipe 2 are all provided with three-way ball valves 5. When rough machining or fine machining is performed on the workpiece, two three-way ball valves 5 are opened.

[0040] As an implementable mode, the first pipeline 3 and the second pipeline 4 are both provided with third flanges, the two ends of the first ball valve 31, the second ball valve 41 and the fifth ball valve 42 are all provided with fourth flanges, and each of the third flange and the fourth flange is fixedly connected through a second bolt. Through the third flange, the fourth flange and the second bolt and the nut, the first ball valve 31 is fixed on the first pipeline 3, and the second ball valve 41 and the fifth ball valve 42 are fixed on the second pipeline 4. Similarly, the third ball valve 81 and the fourth ball valve 91 are also fixed on the third pipeline 8 and the fourth pipeline 9 through flanges.

[0041] As an implementable mode, when the structures of the second impurity filter 82 and the first impurity filter 7 are different, the filter pore diameter of the second impurity filter 82 is smaller than that of the first impurity filter 7, that is, the filter pore diameter of the barrel filter screen 821 is smaller than that of the filter core 71, the second impurity filter 82 comprises a barrel filter screen 821, a first shell 822 and a second shell 823 which are detachably connected, the barrel filter screen 821 is arranged between the first shell 822 and the second shell 823 and located in the cavity formed between the first shell 822 and the second shell 823, and the first shell 822 and the second shell 823 are both connected with the third pipeline 8, and the third pipeline 8 communicates with the inside of the barrel filter screen 821 and the cavity. The filtered grinding fluid enters the second impurity filter 82 through the third pipeline 8, and after the barrel filter screen 821 filters the grinding fluid, the grinding fluid is discharged into the third pipeline 8 through the cavity. After long-term use, the first shell 822 and the second shell 823 can be disassembled, and the old barrel filter screen 821 can be disassembled, so that a new barrel filter screen 821 can be replaced, so that the second impurity filter 82 can maintain good filtering effect.

[0042] As an implementable mode, the first shell 822 is provided with a first joint 8221 communicated with the inside of the barrel-shaped filter screen 821, the third pipeline 8 is provided with a second joint matched with the first joint 8221, and the first joint 8221 and the second joint are screwed; the second shell 823 is provided with a third joint 8231 communicated with the chamber, the third pipeline 8 is provided with a fourth joint matched with the third joint 8231, and the third joint 8231 and the fourth joint are screwed. The first joint 8221, the third joint 8231 and the first shell 822 are all provided with internal threads, the second joint, the fourth joint and the second shell 823 are all provided with external threads matched with the internal threads, and after the first joint 8221 and the second joint and the third joint 8231 and the fourth joint are screwed, the second impurity filter 82 is fixed to the third pipeline 8. After the first shell 822 and the second shell 823 are screwed, they are fixed together.

[0043] As an implementable mode, the inner wall of the first shell 822 is provided with an annular clamping groove 8222, the top of the barrel-shaped filter screen 821 is provided with an annular protrusion 8211 extending upwards, and the annular protrusion 8211 is clamped in the annular clamping groove 8222. The barrel-shaped filter screen 821 is clamped on the first shell 822 through the annular protrusion 8211 and the annular clamping groove 8222, and when the first shell 822 and the second shell 823 are screwed, the barrel-shaped filter screen 821 is located in the chamber. And the flow direction of the grinding fluid is that the grinding fluid enters the inside of the barrel-shaped filter screen 821 through the water outlet pipe 2, the second joint and the first joint 8221, the grinding fluid flows into the chamber after being filtered by the barrel-shaped filter screen 821, and finally the grinding fluid is discharged through the third joint 8231 and the fourth joint.

[0044] The above-mentioned embodiments are only preferred embodiments of the present application, and are only used to explain the present application, and are not intended to limit the scope of the present application. For those skilled in the art, of course, other embodiments can be easily made by substitution or change according to the technical content disclosed in the present application, therefore, any change and improvement made on the principle and process conditions of the present application shall be included in the patent application scope of the present application.

Claims

1. A filter device for a grinding machine cooling system, characterized by, The utility model provides a water purifying device, including water inlet pipe (1), water outlet pipe (2), first pipeline (3) and second pipeline (4), both ends of first pipeline (3) are communicated with water inlet pipe (1) with water outlet pipe (2) respectively, first pipeline (3) is detachably provided with first ball valve (31) on, both ends of second pipeline (4) are communicated with water inlet pipe (1) with water outlet pipe (2) respectively, second pipeline (4) is detachably provided with second ball valve (41) and the first impurity filter (7) for filtering impurity on.

2. The filter device of claim 1, wherein, The first impurity filter (7) includes a dustproof shell, a transparent inner shell (72), and a filter core (71). The dustproof shell includes a lower shell (73) and an upper cover body (74). One end of the lower shell (73) and the upper cover body (74) is rotatably connected by a hinge. The other end of the lower shell (73) and the upper cover body (74) is fixedly connected by a plug-in lock assembly (6). A fixed channel is formed between the lower shell (73) and the upper cover body (74). A U-shaped bracket (731) is provided on the lower shell (73) and located in the fixed channel. The transparent inner shell (72) is detachably provided on the U-shaped bracket (731). Both ends of the transparent inner shell (72) protrude out of the fixed channel and are fixedly connected with the second pipeline (4). The filter core (71) is detachably provided inside the transparent inner shell (72).

3. The filter device of claim 2, wherein, Both ends of the transparent inner shell (72) are provided with first openings. Both ends of the transparent inner shell (72) protrude out of the fixed channel, and the two first openings on the transparent inner shell (72) are fixedly connected with the second pipeline (4). A plurality of support columns (721) are annularly arranged in the transparent inner shell (72). A filtering channel is formed between the plurality of support columns (721). The filter core (71) is inserted into the filtering channel. A sealing ring plate (722) and a water outlet plate (723) are respectively arranged in the two first openings of the transparent inner shell (72). A plurality of water outlets are annularly arranged on the water outlet plate (723) and located outside the center of the water outlet plate (723). The plurality of water outlets are communicated with the filtering channel. One end of the filter core (71) is located at the center of the sealing ring plate (722), and the other end abuts against the center of the water outlet plate (723). The filter core (71) adopts a ring-shaped sheet filter core.

4. The filter device of claim 2, wherein, The plug-in lock assembly (6) includes a plug-in handle (61) and two plug-in lock pieces (62). The two plug-in lock pieces (62) are respectively arranged at the ends of the lower shell (73) and the upper cover body (74) away from the hinge. Plug-in holes are arranged on the two plug-in lock pieces (62). The end of the plug-in handle (61) passes through the two plug-in holes.

5. The filter device of claim 2, wherein, Half-circular notches are arranged on the corresponding end faces of the lower shell (73) and the upper cover body (74). Both ends of the transparent inner shell (72) protrude out of the fixed channel from the half-circular notches on the lower shell (73) and the upper cover body (74).

6. The filter device of claim 1, wherein, The connecting point of the first pipeline (3) with the water inlet pipe (1) and the connecting point of the second pipeline (4) with the water inlet pipe (1) are communicated, the connecting point of the first pipeline (3) with the water outlet pipe (2) and the connecting point of the second pipeline (4) with the water outlet pipe (2) are communicated, and the connecting points of the first pipeline (3), the second pipeline (4), the water inlet pipe (1) and the water outlet pipe (2) are all provided with three-way ball valves (5).

7. The filter device according to any one of claims 1-6, characterized in that The second pipeline (4) is further provided with a fifth ball valve (42), the first impurity filter (7) is located between the second ball valve (41) and the fifth ball valve (42), the second ball valve (41) is located on the water inlet side of the first impurity filter (7), the fifth ball valve (42) is located on the water outlet side of the first impurity filter (7), the second pipeline (4) is provided with a third pipeline (8) in parallel, the third pipeline (8) is provided with a third ball valve (81) and a second impurity filter (82), the third ball valve (81) is located on the water inlet side of the second impurity filter (82), a fourth pipeline (9) is arranged between the second pipeline (4) and the third pipeline (8), one end of the fourth pipeline (9) is located between the third ball valve (81) and the second impurity filter (82), the other end of the fourth pipeline (9) is located between the first impurity filter (7) and the fifth ball valve (42), and the fourth pipeline (9) is provided with a fourth ball valve (91); the second impurity filter (82) and the first impurity filter (7) are the same or different in structure.

8. The filter device of claim 7, wherein, When the second impurity filter (82) and the first impurity filter (7) are different in structure, the second impurity filter (82) comprises a barrel type filter screen (821), a first shell (822) and a second shell (823) connected in a detachable manner, the barrel type filter screen (821) is arranged between the first shell (822) and the second shell (823) and located in a cavity formed between the first shell (822) and the second shell (823), and the first shell (822) and the second shell (823) are both connected with the third pipeline (8), and the third pipeline (8) communicates with the inside of the barrel type filter screen (821) and the cavity.

9. The filter device of claim 8, wherein, A first connector (8221) that communicates with the inside of the barrel type filter screen (821) is arranged on the first shell (822), a second connector that matches the first connector (8221) is arranged on the third pipeline (8), and the first connector (8221) and the second connector are threadedly connected; a third connector (8231) that communicates with the cavity is arranged on the second shell (823), a fourth connector that matches the third connector (8231) is arranged on the third pipeline (8), and the third connector (8231) and the fourth connector are threadedly connected.

10. The filter device of claim 8, wherein, An annular clamping groove (8222) is arranged on the inner wall of the first shell (822), and an annular protrusion (8211) is arranged on the top of the barrel-shaped filter screen (821) and clamped in the annular clamping groove (8222).

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