A centralized oil supply device for a grinding machine

Abstract

The application discloses a centralized oil supply device for a grinding machine, and belongs to the technical field of oil supply of grinding machines, which comprises a plurality of rotating rollers, the rotating rollers are arranged above a filter plate in a radial direction, the rotating rollers are distributed in a circumferential array along the center of the filter plate, the rotating rollers can rotate in a circumferential direction around the center of the filter plate, and the rotating rollers can rotate along their own axes; a plurality of cleaning soft brushes are fixedly connected to the outer surfaces of the rotating rollers, the cleaning soft brushes are arranged along the length direction of the rotating rollers and are in a spiral structure. In the application, the pushing characteristic of the cleaning soft brushes in the spiral structure can automatically push impurities dispersed at various positions of the filter plate to the outer periphery of a filter barrel and into a reflux box, directional collection of the impurities is realized, the impurities are prevented from being scattered and polluting oil again, and the filter holes can be dredged in real time and the filter plate can be prevented from being blocked.

Description

Technical Field

[0001] This invention belongs to the field of grinding machine oil supply technology, and particularly relates to a centralized oil supply device for grinding machines. Background Technology

[0002] In the field of centralized oil supply and lubrication systems for grinding machines, grinding machine lubricating oil will carry solid impurities such as metal shavings, grinding wheel dust, and abrasive fragments during the circulation process. Therefore, the oil supply equipment of the grinding machine needs to be equipped with filter plate components to intercept impurities, thereby ensuring the cleanliness of the lubricating oil and preventing hard particles from entering the guide rails and spindle assembly and causing component damage.

[0003] According to Chinese Patent Publication No. CN104454728A, a centralized oil supply hydraulic valve plate for a bearing grinding machine is disclosed, comprising a hydraulic valve plate body. The valve plate body is characterized by: a first oil inlet channel and a second oil inlet channel distributed within the hydraulic valve plate body, the first and second oil inlet channels penetrating the left and right end faces of the hydraulic valve plate body; six first oil holes, six second oil holes, six third oil holes, and six fifth oil holes drilled on the top view surface of the hydraulic valve plate body; and six fourth oil holes and six sixth oil holes drilled on the front view surface of the hydraulic valve plate body; the third and fifth oil holes are respectively connected to the fourth and sixth oil holes; the first oil inlet channel is connected to the first oil hole; and the second oil inlet channel is connected to the second oil hole.

[0004] However, in the above scheme, although the oil supply device can complete the basic filtration of lubricating oil by relying on the filter plate, it still has the following disadvantages: grinding debris and impurities continue to accumulate on the surface of the filter plate and inside the filter holes, causing the filter plate to be blocked. It is necessary to stop the machine periodically to clean the equipment, which reduces the operating efficiency of the grinding machine. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of continuous accumulation of grinding debris and impurities on the surface of the filter plate and inside the filter holes, causing filter plate blockage and requiring periodic shutdowns for cleaning, which reduces the operating efficiency of the grinding machine. Therefore, a centralized oil supply device for grinding machines is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A centralized oil supply device for a grinding machine includes multiple filter barrels and multiple filter plates, wherein the filter plates are fixedly installed inside the filter barrels, and further includes:

[0008] Multiple rotating rollers are radially arranged above the filter plate. The multiple rotating rollers are distributed in a circumferential array along the center of the filter plate. The rotating rollers can rotate circumferentially around the center of the filter plate and can rotate along their own axis.

[0009] Multiple cleaning brushes are fixedly connected to the outer surface of the rotating roller. The cleaning brushes are arranged along the length of the rotating roller and have a spiral structure.

[0010] Preferred options also include:

[0011] The protective shell is rotatably mounted on the top surface of the filter plate;

[0012] Multiple rotating shafts are rotatably connected to the outer periphery of the protective shell, and one end of each rotating shaft is fixedly connected to one end of a rotating roller.

[0013] Preferred options also include:

[0014] Multiple transmission gears are fixedly connected to the outer surface of the rotating shaft and are located inside the protective shell;

[0015] A toothed ring is fixedly connected to the top surface of the filter plate, and the toothed ring meshes with a transmission gear.

[0016] Preferred options also include:

[0017] The cover is removable and can be installed on the top of the filter canister.

[0018] The motor is fixedly installed on the top surface of the cover;

[0019] The main shaft is rotatably connected to the top of the filter plate. The main shaft is fixedly connected to the protective shell. The end of the main shaft away from the filter plate is fixedly connected to the output end of the processing motor.

[0020] Preferred options also include:

[0021] Multiple return boxes are installed on the outer periphery of the filter barrel, and the inner bottom surface of the return box is lower than the top surface of the filter plate;

[0022] Multiple filter baskets, which are detachably inserted into the return box, are used to collect impurities in the grinding oil;

[0023] Multiple return pipes are provided, which connect the return box and the filter barrel. The end of the return pipe away from the return box is located below the filter plate.

[0024] Preferred options also include:

[0025] Multiple counterweights are provided, and the rotating roller has a cavity inside which the counterweights are axially slidably disposed;

[0026] Multiple movable rods are provided, with a counterweight fixedly connected to the outer surface of the movable rods, and the movable rods slidingly engaged with the rotating shaft axially.

[0027] Preferred options also include:

[0028] A fixing ring is fixedly connected to the top surface of the filter plate, and the fixing ring is coaxially sleeved on the outer periphery of the main shaft.

[0029] Multiple trigger blocks are fixedly connected to the outer periphery of the fixed ring, and the multiple trigger blocks are distributed in a circular array.

[0030] Multiple sliders are connected to one end of a movable rod and are located inside a protective shell;

[0031] Multiple trigger wheels are fixedly connected to the side of the slider away from the moving rod, and the trigger wheels can periodically contact the trigger block and the fixed ring;

[0032] Multiple return springs are provided, each spring being sleeved on the outer surface of the moving rod, with its two ends connected to one side of the slider and the other side of the rotating shaft, respectively.

[0033] Preferred options also include:

[0034] Multiple sliding sleeves are fixedly connected inside the protective shell, and the slider is slidably connected to the sliding sleeves.

[0035] Preferred options also include:

[0036] Multiple limiting sleeves are axially connected to the cavity, and the limiting sleeves are slidably connected to the moving rod.

[0037] Preferred options also include:

[0038] The treatment tank has multiple filter barrels connected and installed at the top. The treatment tank has a reflux zone inside, and an interceptor plate is installed in the reflux zone.

[0039] A self-priming pump is fixedly installed on the top of the treatment tank, and the self-priming pump is located above the treatment tank.

[0040] The delivery pipeline is installed between the self-priming pump and multiple filter tanks;

[0041] A cooling device is installed on one side of the treatment tank, and a circulation pipe is connected to one side of the cooling device, which extends into the treatment tank.

[0042] The power distribution cabinet is installed on one side of the treatment pool.

[0043] Compared with existing technologies, a centralized oil supply device for grinding machines that adopts the above technical solution has the following beneficial effects:

[0044] 1. In this invention, the cleaning soft brush forms a composite cleaning trajectory of revolution and rotation, which can clean the top surface of the filter plate in all directions without dead angles, thus improving the cleaning effect of impurities. In addition, the pushing characteristics of the spiral structure of the cleaning soft brush can automatically concentrate and push the impurities scattered in various parts of the filter plate to the outer periphery of the filter barrel and guide them into the return box, realizing the directional collection of impurities, avoiding secondary scattering of impurities and contamination of oil, and can unclog the filter holes in real time and prevent the filter plate from clogging. It eliminates the need for frequent downtime maintenance, reducing the probability of equipment blockage and the frequency of manual operation and maintenance.

[0045] 2. In this invention, the moving rod drives the counterweight to reciprocate synchronously within the cavity, generating continuous and controllable mechanical vibration. This vibration is directly transmitted to the rotating roller and the surface of the cleaning brush, which can shake off and remove residual impurities adhering to the cleaning brush and the rotating roller, preventing secondary accumulation or blockage of impurities. At the same time, it can avoid frequent shutdowns to clean impurities, which is conducive to continuous operation of the equipment and improves work efficiency. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0047] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0048] Figure 3 This is a three-dimensional cross-sectional view of the present invention;

[0049] Figure 4 This is a three-dimensional structural diagram of the filter barrel in this invention;

[0050] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the filter barrel in this invention;

[0051] Figure 6 This is a three-dimensional disassembled structural diagram of the filter basket and reflux box in this invention;

[0052] Figure 7 This is a schematic diagram of the internal three-dimensional disassembled structure of the filter barrel in this invention;

[0053] Figure 8 For the present invention Figure 7 Enlarged structural diagram of section A;

[0054] Figure 9 This is a schematic diagram of the internal cross-sectional structure of the rotating roller in this invention.

[0055] Legend: 1. Filter barrel; 2. Cover; 301. Processing motor; 302. Filter basket; 303. Return box; 304. Return pipe; 305. Filter plate; 306. Rotating roller; 307. Cleaning brush; 308. Protective shell; 309. Main shaft; 310. Gear ring; 311. Rotating shaft; 312. Transmission gear; 401. Fixed ring; 402. Trigger block; 403. Return spring; 404. Sliding sleeve; 405. Sliding block; 406. Trigger wheel; 407. Moving rod; 408. Counterweight; 409. Limit sleeve; 5. Processing tank; 6. Power distribution cabinet; 7. Cooling device; 8. Conveying pipe; 9. Self-priming pump; 10. Return zone; 11. Interception plate. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Please see Figures 1-3 , Figure 5 The present invention provides a technical solution:

[0058] A centralized oil supply device for a grinding machine includes multiple filter barrels 1 and multiple filter plates 305. The filter plates 305 are fixedly installed inside the filter barrels 1. The filter barrels 1 and the filter plates 305 have circular cross-sectional shapes and are concentrically arranged.

[0059] Also includes:

[0060] Treatment tank 5, multiple filter barrels 1 are connected and arranged on the top of treatment tank 5, and a reflux zone 10 is provided inside the treatment tank 5. An interception plate 11 is installed in the reflux zone 10, wherein, for example... Figure 2 As shown, multiple filter barrels 1 are installed in three rows on the top of the treatment tank 5. The two rows closest to the cooling device 7 are all linear arrays of 6 filter barrels 1, and the remaining row has 4 filter barrels 1. An inlet pipe is provided on one side of the treatment tank 5, which is connected to the return zone 10. An interceptor plate 11 is set between the self-priming pump 9 and the inlet pipe to initially intercept large particulate impurities in the grinding oil.

[0061] A self-priming pump 9 is fixedly installed on the top of the treatment tank 5, and the self-priming pump 9 is located above the treatment tank 5.

[0062] The conveying pipe 8 is installed between the self-priming pump 9 and multiple filter tanks 1;

[0063] Cooling device 7 is installed on one side of treatment tank 5. A circulation pipe is connected to one side of cooling device 7 and extends into treatment tank 5. Cooling device 7 is model WD-20A.

[0064] Distribution cabinet 6 is installed on one side of treatment pool 5;

[0065] In this embodiment, the grinding oil temperature is controlled in real time to maintain a constant temperature by exchanging heat between the circulating pipe and the oil in the treatment tank 5, thus avoiding oil deterioration and decreased machining accuracy due to excessively high oil temperature; the entire set of equipment is powered by the power distribution cabinet 6 to achieve automated centralized control.

[0066] See Figures 5-8 Multiple rotating rollers 306 are radially arranged above the filter plate 305. The multiple rotating rollers 306 are arranged in a circumferential array along the center of the filter plate 305. The rotating rollers 306 can rotate circumferentially around the center of the filter plate 305. The rotating rollers 306 can rotate along their own axis. In this case, all of the multiple rotating rollers 306 can rotate circumferentially around the center of the filter plate 305.

[0067] Multiple cleaning soft brushes 307 are fixedly connected to the outer surface of the rotating roller 306. The cleaning soft brushes 307 are arranged along the length direction of the rotating roller 306 and have a spiral structure. The cleaning soft brushes 307 can fit against the top surface of the filter plate 305 and can clean the filter plate 305 and transport impurities.

[0068] Multiple return boxes 303 are installed on the outer periphery of the filter barrel 1. The inner bottom surface of the return box 303 is lower than the top surface of the filter plate 305. A through groove is provided on the outer periphery of the filter barrel 1, and the return box 303 is connected to the inside of the filter barrel 1 through the through groove.

[0069] Multiple filter baskets 302 are detachably inserted into a return box 303 to collect impurities in the grinding oil. The bottom surface of the return box 303 is provided with a rectangular groove to accommodate the thickness of the bottom surface of the filter baskets 302, so that the bottom surface of the filter baskets 302 can be flush with the bottom surface of the groove. The bottom surface of the filter baskets 302 has a multi-pore structure.

[0070] Multiple return pipes 304 are connected between the return box 303 and the filter barrel 1, and one end of the return pipe 304 away from the return box 303 is located below the filter plate 305;

[0071] See Figures 7-8 The protective shell 308 is rotatably mounted on the top surface of the filter plate 305, wherein the bottom surface of the protective shell 308 is in contact with the top surface of the filter plate 305, and the protective shell 308 and the filter plate 305 rotate relative to each other.

[0072] Multiple rotating shafts 311 are rotatably connected to the outer periphery of the protective shell 308. One end of the rotating shaft 311 is fixedly connected to one end of the rotating roller 306. A circular hole is provided on the outer periphery of the protective shell 308, and a bearing is embedded in the circular hole. The rotating shaft 311 is rotatably connected to the bearing.

[0073] Multiple transmission gears 312 are fixedly connected to the outer surface of the rotating shaft 311 and are located inside the protective shell 308;

[0074] A toothed ring 310 is fixedly connected to the top surface of the filter plate 305. The toothed ring 310 is meshed with the transmission gear 312. The toothed ring 310 and the filter plate 305 are concentrically arranged.

[0075] See Figures 4-5 The cover 2 is detachably installed on the top of the filter barrel 1. The cover 2 has a circular cross-sectional shape and is installed between the cover 2 and the filter barrel 1 by bolts and nuts.

[0076] The motor 301 is fixedly installed on the top surface of the cover 2;

[0077] The main shaft 309 is rotatably connected to the top of the filter plate 305. The main shaft 309 is fixedly connected to the protective shell 308. The end of the main shaft 309 away from the filter plate 305 is fixedly connected to the output end of the processing motor 301.

[0078] The specific usage method and working principle are as follows: When in use, the waste grinding oil containing impurities generated after the grinding machine is processed is uniformly collected into the return zone 10 inside the treatment tank 5 through the liquid inlet pipe on one side of the treatment tank 5; the interception plate 11 set in the return zone 10 is located between the liquid inlet pipe and the self-priming pump 9, which can first perform primary coarse filtration on the grinding oil, intercept large-volume impurities, and prevent large particles of impurities from entering the downstream pipeline and filter structure and causing blockage. The oil that has completed the initial purification is stored in the return zone 10.

[0079] Afterwards, the self-priming pump 9 starts and continuously draws grinding oil from the return zone 10, and delivers it to the interior of multiple orderly arranged filter barrels 1 through the delivery pipe 8; when the oil flows through the filter plate 305, it completes secondary fine filtration, and fine metal dust and suspended impurities are trapped on the top surface of the filter plate 305. The filtered clean grinding oil flows out from below the filter plate 305 and is supplied to the grinding machine for circulation.

[0080] While the filtration operation continues, the processing motor 301 at the top of the cover 2 drives the protective shell 308 to rotate around the center of the filter plate 305 via the main shaft 309; the protective shell 308 drives the rotating shaft 311 to revolve around the center, and the rotating shaft 311 drives the transmission gear 312 to mesh with the toothed ring 310 on the top surface of the filter plate 305. During the revolution of the protective shell 308, the meshing action of the fixed toothed ring 310 drives the transmission gear 312 and the rotating shaft 311 to rotate around their own axis, so that the rotating roller 306 can synchronously complete the compound motion of revolution and rotation; the spiral cleaning soft brush 307 on the surface of the rotating roller 306 is always in contact with the top surface of the filter plate 305, and performs compound cleaning motion with the rotating roller 306 to clean the impurities accumulated on the surface of the filter plate 305 in all directions. In addition, the spiral cleaning soft brush 307 has a pushing and conveying effect, which can continuously push the impurities from all parts of the filter plate 305 to the outer periphery of the filter barrel 1. The impurities enter the outer return box 303 through the through groove on the side wall of the filter barrel 1.

[0081] Since the bottom surface of the filter basket 302 is flush with the bottom surface of the through groove, impurities are eliminated from entering the filter basket 302 without any residue or dead corners. The multi-pore structure at the bottom of the filter basket 302 can filter the oil carrying impurities again. The impurities are trapped in the filter basket 302 and collected, which is convenient for later disassembly and cleaning. The oil passing through the filter basket 302 flows back to the clean oil area inside the filter barrel 1 and below the filter plate 305 through the return pipe 304, and re-enters the oil supply cycle, avoiding oil waste.

[0082] Please see Figure 9 It also includes:

[0083] Multiple counterweights 408 are provided. The rotating roller 306 has a cavity inside. The counterweights 408 are axially slidably disposed in the cavity. The cross-sectional shape of both the cavity and the counterweights 408 is circular.

[0084] Multiple movable rods 407 are provided, and the counterweight 408 is fixedly connected to the outer surface of the movable rod 407. The movable rod 407 is axially slidingly engaged with the rotating shaft 311. The movable rod 407 passes through the rotating shaft 311, and the movable rod 407 and the rotating shaft 311 can rotate relative to each other.

[0085] See Figures 8-9 A fixing ring 401 is fixedly connected to the top surface of the filter plate 305. The fixing ring 401 is coaxially sleeved on the outer periphery of the main shaft 309. An assembly gap is reserved between the inner wall of the fixing ring 401 and the outer wall of the main shaft 309.

[0086] Multiple trigger blocks 402 are fixedly connected to the outer periphery of the fixing ring 401. The multiple trigger blocks 402 are arranged in a circular array, wherein the outer contour of the trigger blocks 402 is an arc structure.

[0087] Multiple sliders 405 are connected to one end of a movable rod 407 and are located inside a protective shell 308. The sliders 405 are rectangular in shape.

[0088] Multiple trigger wheels 406 are fixedly connected to the side of the slider 405 away from the moving rod 407. The trigger wheels 406 can periodically contact the trigger block 402 and the fixing ring 401.

[0089] Multiple return springs 403 are sleeved on the outer surface of the moving rod 407, and the two ends of the return springs 403 are respectively connected to one side of the slider 405 and one side of the rotating shaft 311.

[0090] Multiple sliding sleeves 404 are fixedly connected inside the protective shell 308. The slider 405 is slidably connected to the sliding sleeve 404. A connecting rod is connected to the top of the sliding sleeve 404 and is fixedly connected to the inner top wall of the protective shell 308. The sliding sleeve 404 has a rectangular cross-section. The outer side of the slider 405 fits against the inner wall of the sliding sleeve 404 to ensure the stability of the slider 405's movement. In addition, the sliding sleeve 404 can limit the slider 405 to prevent the moving rod 407 from rotating with the rotating shaft 311.

[0091] Multiple limiting sleeves 409 are axially connected to the cavity. The limiting sleeves 409 are slidably connected to the moving rod 407. The inner wall of the limiting sleeve 409 has a circular cross-sectional shape. The outer periphery of the moving rod 407 is in contact with the inner wall of the limiting sleeve 409, and the moving rod 407 and the limiting sleeve 409 can rotate relative to each other.

[0092] The specific usage method and working principle are as follows: During the process of cleaning and conveying impurities on the filter plate 305 by the rotating roller 306 and the cleaning soft brush 307, the protective shell 308 drives the moving rod 407 to revolve around the main shaft 309 via the rotating shaft 311. The moving rod 407 drives the slider 405 and the trigger wheel 406 to revolve around the fixed ring 401. The trigger wheel 406 periodically contacts the trigger block 402. The trigger block 402 drives the trigger wheel 406 away from the fixed ring 401 and causes the return spring 403 to contract. When the trigger block 402... 2. When separated from the trigger wheel 406, the return spring 403 rebounds and drives the slider 405 to move towards the fixed ring 401, so that the slider 405 can move back and forth radially along the filter plate 305. The slider 405 drives the moving rod 407 to move back and forth synchronously. The moving rod 407 drives the counterweight 408 to move back and forth in the cavity, thereby generating vibration and transmitting the vibration to the rotating roller 306 and the cleaning soft brush 307, thereby preventing impurities from remaining on the cleaning soft brush 307 and the rotating roller 306, and improving the efficiency of impurity removal and collection.

[0093] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A centralized oil supply device for a grinding machine, comprising multiple filter barrels (1) and multiple filter plates (305), wherein the filter plates (305) are fixedly installed inside the filter barrels (1), characterized in that, Also includes: Multiple rotating rollers (306) are radially arranged above the filter plate (305). The multiple rotating rollers (306) are arranged in a circular array along the center of the filter plate (305). The rotating rollers (306) can rotate circumferentially around the center of the filter plate (305). The rotating rollers (306) can rotate along their own axis. Multiple cleaning brushes (307) are fixedly connected to the outer surface of the rotating roller (306). The cleaning brushes (307) are arranged along the length direction of the rotating roller (306) and have a spiral structure.

2. A centralized oil supply device for a grinding machine according to claim 1, characterized in that, Also includes: The protective shell (308) is rotatably mounted on the top surface of the filter plate (305); Multiple rotating shafts (311) are rotatably connected to the outer periphery of the protective shell (308), and one end of the rotating shaft (311) is fixedly connected to one end of the rotating roller (306).

3. A centralized oil supply device for a grinding machine according to claim 2, characterized in that, Also includes: Multiple transmission gears (312) are fixedly connected to the outer surface of the rotating shaft (311) and are located inside the protective shell (308); A toothed ring (310) is fixedly connected to the top surface of the filter plate (305), and the toothed ring (310) is meshed with the transmission gear (312).

4. A centralized oil supply device for a grinding machine according to claim 2, characterized in that, Also includes: The cover (2) is detachably installed on the top of the filter bucket (1); The processing motor (301) is fixedly installed on the top surface of the cover (2); The main shaft (309) is rotatably connected to the top of the filter plate (305). The main shaft (309) is fixedly connected to the protective shell (308). The end of the main shaft (309) away from the filter plate (305) is fixedly connected to the output end of the processing motor (301).

5. A centralized oil supply device for a grinding machine according to claim 1, characterized in that, Also includes: Multiple return boxes (303) are installed on the outer periphery of the filter barrel (1), and the inner bottom surface of the return box (303) is lower than the top surface of the filter plate (305); Multiple filter baskets (302) are detachably inserted into a return box (303) for collecting impurities in the grinding oil; Multiple return pipes (304) are connected between the return box (303) and the filter barrel (1), and one end of the return pipe (304) away from the return box (303) is located below the filter plate (305).

6. A centralized oil supply device for a grinding machine according to claim 2, characterized in that, Also includes: Multiple counterweights (408), the rotating roller (306) has a cavity inside, and the counterweights (408) are axially slidably disposed in the cavity; Multiple movable rods (407) are provided, and the counterweight (408) is fixedly connected to the outer surface of the movable rods (407). The movable rods (407) are axially slidingly engaged with the rotating shaft (311).

7. A centralized oil supply device for a grinding machine according to claim 6, characterized in that, Also includes: A fixing ring (401) is fixedly connected to the top surface of the filter plate (305), and the fixing ring (401) is coaxially sleeved on the outer periphery of the main shaft (309); Multiple trigger blocks (402) are fixedly connected to the outer periphery of the fixing ring (401), and the multiple trigger blocks (402) are arranged in a circular array; Multiple sliders (405) are connected to one end of a moving rod (407) and are located inside a protective shell (308); Multiple trigger wheels (406) are fixedly connected to the side of the slider (405) away from the moving rod (407). The trigger wheels (406) can periodically contact the trigger block (402) and the fixing ring (401). Multiple return springs (403) are sleeved on the outer surface of the moving rod (407), and the two ends of the return springs (403) are respectively connected to one side of the slider (405) and one side of the rotating shaft (311).

8. A centralized oil supply device for a grinding machine according to claim 7, characterized in that, Also includes: Multiple sliding sleeves (404) are fixedly connected inside the protective shell (308), and the slider (405) is slidably connected to the sliding sleeves (404).

9. A centralized oil supply device for a grinding machine according to claim 6, characterized in that, Also includes: Multiple limiting sleeves (409) are axially connected to the cavity, and the limiting sleeves (409) are slidably connected to the moving rod (407).

10. A centralized oil supply device for a grinding machine according to claim 1, characterized in that, Also includes: A treatment tank (5) is provided with multiple filter barrels (1) connected on the top of the treatment tank (5). A reflux zone (10) is provided inside the treatment tank (5), and an interceptor plate (11) is installed in the reflux zone (10). A self-priming pump (9) is fixedly installed on the top of the treatment tank (5), and the self-priming pump (9) is located above the treatment tank (5); A delivery pipe (8) is installed between a self-priming pump (9) and multiple filter barrels (1); A cooling device (7) is installed on one side of the treatment tank (5), and a circulation pipe is connected to one side of the cooling device (7), which extends into the treatment tank (5). The power distribution cabinet (6) is installed on one side of the treatment pool (5).

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