Efficient adjustable cooling liquid circulation centerless grinding machine

Abstract

The application discloses a high-efficiency adjustable cooling liquid circulating centerless grinding machine and relates to the technical field of centerless grinding machines. The centerless grinding machine comprises a machine body, a polishing assembly is arranged in the machine body, the polishing assembly comprises a liquid storage tank, the liquid storage tank is fixed in the machine body, a mounting plate is arranged on the liquid storage tank, two lead screws are rotatably arranged above the mounting plate, two moving motors are fixed to the two ends of the mounting plate, output shafts of the moving motors are fixedly connected with the lead screws, two moving seats are slidably arranged above the mounting plate, a mounting box one and a mounting box two are respectively fixed to the two moving seats, a driven wheel is rotatably arranged in the mounting box one, a driving wheel is rotatably arranged in the mounting box two, a separation assembly and a collection assembly are arranged in the liquid storage tank, and a conveying assembly is arranged on the mounting plate. The centerless grinding machine can isolate solid particles from cooling liquid, collect floating oil on the surface of the cooling liquid by using surface tension, continuously discharge liquid containing the floating oil, and ensure long-term cleanliness of the cooling liquid in the liquid storage tank.

Description

Technical Field

[0001] This invention relates to the field of centerless grinding technology, specifically to a high-efficiency adjustable coolant circulating centerless grinding machine. Background Technology

[0002] A centerless grinder is a machine tool that can perform external cylindrical grinding without axial positioning of the workpiece. It relies on the workpiece's own positioning between the guide wheel and the grinding wheel to achieve grinding, and is widely used in the precision machining of cylindrical workpieces such as bearings, pins, and piston rods. During centerless grinding, a large amount of heat is generated in the grinding area between the grinding wheel and the workpiece, requiring cooling and lubrication by a coolant to prevent workpiece surface burning and excessive wear of the grinding wheel. The coolant also serves to flush away metal shavings and particles detached from the grinding area.

[0003] Traditional coolant circulation systems for centerless grinders typically employ a single-stage filter combined with a settling tank to purify the used coolant. The coolant flowing back from the grinding area first passes through a coarse filter to intercept large particles before entering the settling tank. Solid particles settle naturally at the bottom of the tank due to gravity, and the coolant in the upper part of the tank is then pumped back to the grinding area. This method suffers from insufficient filtration precision. The single-stage filter can only intercept larger particles and cannot effectively catch fine iron filings and detached grinding wheel grains generated during grinding. Furthermore, the settling efficiency of the settling tank is constrained by particle size, settling time, and coolant flow rate. For smaller particles, the settling speed is slow and the settling effect is limited, resulting in a large number of tiny solid particles remaining in the coolant. These residual solid particles, once re-entering the grinding zone with the circulating coolant, can easily scratch the workpiece surface, causing the surface roughness to fail to meet process requirements, resulting in scratches and roughening. They also accelerate the wear of the grinding wheel's working surface, shorten the grinding wheel's service life, and increase processing costs.

[0004] Furthermore, the loading and unloading operations of existing centerless grinders are mostly done manually. Operators need to manually place the workpieces to be processed in the grinding station and manually remove them after grinding. This is not only labor-intensive and inefficient, but also prone to workpiece misplacement due to operator fatigue during continuous mass production, affecting processing quality. Simultaneously, the coolant circulation system in centerless grinders usually has only one chamber in its reservoir. Dirty coolant recovered from the grinding area is mixed with clean coolant after sedimentation and purification in the same chamber. This causes the purified coolant to be recontaminated by the returned dirty coolant in the reservoir, resulting in the actual cleanliness of the coolant being lower than the nominal sedimentation and separation capacity. This leads to the need for frequent replacement of all coolant, increasing production costs and the burden of waste liquid disposal. Additionally, during long-term use, lubricating oil and hydraulic oil from the grinding area can leak or splash into the coolant, forming a layer of floating oil on the coolant surface. This floating oil not only reduces the cooling and lubrication performance of the coolant but also breeds bacteria, causing the coolant to deteriorate and smell, worsening the workshop working environment. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency adjustable coolant circulation centerless grinding machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency adjustable coolant circulating centerless grinder, comprising a machine body, a grinding assembly inside the machine body, the grinding assembly including a coolant reservoir fixed inside the machine body, a mounting plate above the coolant reservoir, two lead screws rotatably mounted above the mounting plate, a moving motor fixed at both ends of the mounting plate, the output shafts of the two moving motors being fixedly connected to the lead screws at corresponding positions, and two movable seats slidably mounted above the mounting plate, both movable seats being threadedly connected to the lead screws at corresponding positions. On the rod, above the two movable seats, mounting box one and mounting box two are fixed respectively. The interior of mounting box one is equipped with a driven wheel that rotates, and the interior of mounting box two is equipped with a driving wheel that rotates. A grinding motor is installed on the side of mounting box two, and the output shaft of the grinding motor is fixedly connected to the driving wheel. A secondary cutting tool feed device is installed above mounting box one. A liquid guide groove and a liquid outlet are opened on the top of the mounting plate. The liquid outlet is connected to the liquid guide groove. A baffle is fixed on the side of the mounting plate. The interior of the liquid storage tank is equipped with a separation component and a collection component. A conveying component is installed above the mounting plate.

[0007] With the above structure, the moving motor drives the lead screw to rotate, the lead screw drives the moving seat to slide along the mounting plate, and the moving seat drives mounting box one and mounting box two to move towards each other or away from each other. The distance between the driving wheel and the driven wheel is adjusted to meet the grinding requirements of workpieces with different diameters. The grinding motor drives the driving wheel to rotate, the driving wheel drives the workpiece to rotate, and the driven wheel provides support for the workpiece and rotates passively with the workpiece. The workpiece completes the grinding process between the driving wheel and the driven wheel. The auxiliary dressing feed device provides feed motion during the grinding wheel dressing process, dresses the working surface of the grinding wheel, and restores the cutting ability and geometric accuracy of the grinding wheel. The coolant generated during the grinding process carries the grinding chips and metal powder to the liquid guide groove above the mounting plate. After being collected in the liquid guide groove, it flows into the liquid collection chamber inside the liquid storage tank through the liquid drop outlet for purification. The baffle restricts the flow direction of the coolant and grinding chips, prevents the coolant from overflowing from the edge of the mounting plate, and guides all the coolant into the liquid guide groove and the liquid drop outlet. The moving motor, in conjunction with the lead screw and moving seat, enables precise adjustment of the distance between the driving and driven wheels, allowing the grinding machine to quickly adapt to the processing needs of workpieces with different diameters. This improves the equipment's versatility and ease of adjustment. The cooperative structure of the driving and driven wheels provides stable support and drive for the workpiece, ensuring the workpiece's rotational stability and processing accuracy during grinding. The coolant guide groove and drop outlet on the mounting plate form a coolant recovery channel, enabling immediate collection and guided delivery of coolant in the grinding area. This shortens the coolant return path and improves circulation efficiency. The baffle prevents coolant from overflowing from the edge of the mounting plate, ensuring that all coolant enters the guide groove, avoiding coolant waste and workshop environmental pollution.

[0008] The conveying assembly includes a conveying trough plate, which is fixed above the mounting plate. A conveyor belt is installed at one end of the conveying trough plate via two conveying rollers. A conveying motor is fixed to the side of the conveying trough plate, and the output shaft of the conveying motor is connected to one of the conveying rollers via a commutator. The conveying trough plate has a grinding port and a discharge port. The grinding port is located between the driving wheel and the driven wheel. A triangular block is fixed inside the conveying trough plate and is located at the discharge port. Several conveying rollers are rotatably installed inside the other end of the conveying trough plate. The several conveying rollers and the conveyor belt are at the same horizontal height. A feeding motor is fixed below the other end of the conveying trough plate and is connected to one of the conveying rollers via a commutator.

[0009] With the above structure, the conveyor motor drives the first conveyor roller to rotate through the commutator. The first conveyor roller drives the conveyor belt to rotate. The conveyor belt transports the workpiece to be ground from the feed end of the conveyor trough to the grinding port. When the workpiece is transported to the grinding port position by the conveyor belt, the driving wheel and the driven wheel clamp and drive the workpiece. The grinding process is completed at the grinding port. The feeding motor drives the second conveyor roller to rotate through the commutator. The second conveyor roller drives the workpiece that has been ground to continue to move along the conveyor trough towards the discharge port. When the workpiece moves to the triangular block position at the discharge port, the inclined surface of the triangular block pushes the workpiece upward from the conveyor trough, so that the workpiece leaves the conveyor trough through the discharge port and completes the automatic unloading. The conveyor belt and several second conveyor rollers are at the same horizontal height to ensure that the workpiece maintains a horizontal movement trajectory during the conveying process and avoids the workpiece from deviating or tilting during the conveying process. The conveyor belt, in conjunction with the conveyor motor, enables automatic feeding of workpieces, replacing manual feeding operations, reducing the labor intensity of operators, and improving the continuity and production efficiency of grinding. Triangular blocks at the discharge port push the workpiece out of the conveyor trough, realizing automatic unloading of the workpiece after grinding, avoiding the manual material handling process, and shortening the processing auxiliary time. The conveyor belt and conveyor rollers are set at the same horizontal height, ensuring the horizontal posture of the workpiece throughout the entire conveying path, preventing jamming or displacement failures caused by changes in workpiece posture. The conveyor motor and the feeding motor drive the conveyor belt and conveyor rollers independently, allowing the feeding speed and discharge speed to be adjusted separately according to the processing rhythm, improving the equipment's adaptability to different processing technologies.

[0010] The liquid storage tank has a fixed partition inside, which divides the inside of the liquid storage tank into a liquid storage chamber and a liquid collection chamber. The liquid outlet is connected to the liquid collection chamber. Both the liquid storage chamber and the liquid collection chamber are filled with coolant. The liquid storage chamber is equipped with a cooling component. The outlet of the cooling component is located above the driving wheel and the driven wheel.

[0011] With the above structure, the partition divides the liquid storage tank into two independent chambers: a liquid storage chamber and a liquid collection chamber. The liquid collection chamber is used to collect dirty coolant carrying impurities that flows in from the liquid outlet, while the liquid storage chamber is used to store clean coolant after purification treatment. After the dirty coolant enters the liquid collection chamber through the liquid outlet, it undergoes preliminary sedimentation and separation. Heavier solid particles settle at the bottom of the liquid collection chamber. The coolant that has undergone preliminary sedimentation in the liquid collection chamber is transported to the separation component for further purification treatment. The purified clean coolant flows into the liquid storage chamber through the outlet pipe. The cooling component inside the liquid storage chamber draws the clean coolant from the liquid storage chamber and transports it to the top of the driving wheel and driven wheel through the outlet of the cooling component. After the coolant flows out from the outlet, it is directly poured into the grinding area to cool and lubricate the grinding wheel and the workpiece. The partition divides the coolant tank into a storage compartment and a collection compartment, achieving physical isolation between dirty and clean coolant. This prevents the clean coolant from mixing with the untreated dirty coolant, ensuring the cleanliness of the coolant in the storage compartment. The collection compartment serves as a collection and initial sedimentation site for dirty coolant, allowing large grinding particles to settle before entering the separation component, reducing the processing load on the separation component and extending its maintenance cycle. The coolant outlet of the cooling component is located above the drive and driven wheels, allowing the coolant to be directly poured onto the grinding area, achieving precise cooling and lubrication of the grinding area and ensuring the efficiency of coolant use. The clean coolant stored in the storage compartment provides a continuous and stable coolant supply for grinding, ensuring uninterrupted coolant supply during continuous operation of the grinding machine.

[0012] The separation assembly includes a support frame fixed inside the collection chamber. A fixing plate is fixed above the support frame, a guide hopper is fixed below the fixing plate, a separation cylinder is fixed above the fixing plate, a cover plate is fixed above the separation cylinder, a rotary motor is fixed above the cover plate, a connecting column is fixedly connected to the output shaft of the rotary motor, the connecting column is rotatably positioned above the cover plate, a circular plate is fixed below the connecting column, several connecting rods are fixed below the circular plate, a circular plate is fixed below the connecting rods, a filter bucket is fixed between two circular plates, and an outlet pipe is rotatably connected to the bottom of the circular plate. The end of the outlet pipe passes through a partition and is connected to the storage chamber.

[0013] With the above structure, the output shaft of the rotary motor is fixedly connected to the connecting column. The rotary motor drives the connecting column to rotate around its own axis, and the connecting column drives the upper circular plate to rotate synchronously. The upper circular plate transmits the rotational power to the lower circular plate through several connecting rods. The two circular plates rotate synchronously under the drive of the rotary motor. The filter barrel fixed between the two circular plates rotates synchronously with the circular plates. During the rotation of the filter barrel, centrifugal force is generated. Under the action of centrifugal force, the coolant inside the filter barrel is thrown towards the filter holes of the filter barrel. When the coolant containing solid particles rotates inside the filter barrel, the coolant passes through the filter holes of the filter barrel and is thrown out to the space between the separation cylinder and the filter barrel. Within the annular space, solid particles in the coolant are intercepted by the filter holes of the filter barrel on the inner wall surface of the filter barrel. The clean coolant passing through the filter holes of the filter barrel flows into the outlet pipe through the circular plate below. The end of the outlet pipe passes through a partition, and the clean coolant flows into the storage tank through the partition. The outlet pipe and the circular plate below are rotatably connected. The outlet pipe remains stationary, while the circular plate rotates around the axis of the outlet pipe. The opening of the outlet pipe is connected to the outlet channel below the circular plate. The solid particles intercepted on the inner wall surface of the filter barrel slide down the inner wall of the filter barrel under the action of gravity. After the solid particles are deposited at the bottom of the filter barrel, they are collected and discharged through the guide bucket. The bracket and fixing plate secure the separator cylinder inside the collection tank, ensuring it is submerged below the coolant level. This shortens the delivery distance of the submersible pump pipe and reduces pressure loss during coolant transport. A cover plate seals the upper opening of the separator cylinder, preventing coolant from splashing out when the rotary motor drives the filter barrel at high speed, thus avoiding coolant waste and contamination of external components. The rotary motor drives two circular plates to rotate synchronously via connecting columns. These plates simultaneously provide rotational driving force and radial constraint to the upper and lower ends of the filter barrel, maintaining its cylindrical geometry even at high speeds and preventing radial deformation under centrifugal force. The centrifugal force generated by the filter barrel's rotation with the circular plates causes solid particles in the coolant to be dispersed within the centrifugal force field. The solid particles accelerate towards the inner wall of the filter barrel, where they are intercepted, achieving efficient solid-liquid separation of the coolant and solid particles. The outlet pipe is connected to the circular plate by a rotating method, keeping the outlet pipe stationary. This avoids torsional loads on the baffle plate when the outlet pipe rotates with the circular plate, ensuring the sealing reliability and long-term stability of the outlet pipe at the baffle plate. The solid particles intercepted on the inner wall of the filter barrel slide downwards and collect under gravity, automatically discharging without additional power, reducing the energy consumption of the separation component. The guide bucket collects and guides the solid particles discharged from the bottom of the separation barrel, concentrating the dispersed solid particles to the inlet end of the conveying pipe, preventing the solid particles from accumulating and spreading on the surface of the fixed plate, and ensuring smooth solid particle conveying.

[0014] The separation assembly also includes a conveying pipe and a submersible pump. The conveying pipe is connected to the guide bucket and extends through the liquid storage tank. An auger is installed inside the conveying pipe for rotation. A lifting motor is fixed to the end of the conveying pipe, and the output shaft of the lifting motor is fixedly connected to the auger. A discharge pipe is fixed to the end of the conveying pipe and is connected to the conveying pipe. The submersible pump is fixed inside the liquid collection chamber. The water outlet of the submersible pump is connected to a liquid delivery pipe, and the end of the liquid delivery pipe is fixedly connected to the separation cylinder.

[0015] With the above structure, the submersible pump is fixed below the coolant level inside the collection tank. The submersible pump draws out the dirty coolant, which has undergone preliminary sedimentation, from the collection tank. The dirty coolant enters the delivery pipe through the outlet of the submersible pump. The end of the delivery pipe is fixedly connected to the separation cylinder. The dirty coolant delivered by the submersible pump enters the separation cylinder through the delivery pipe, where it undergoes centrifugal solid-liquid separation. The conveying pipe is connected to the guide hopper. The solid particles collected in the guide hopper enter the lower inlet of the conveying pipe. An auger rotating inside the conveying pipe receives the solid particles entering the conveying pipe. The lifting motor is fixed to the end of the conveying pipe, and the output shaft of the lifting motor is fixedly connected to the auger. The motor drives the auger to rotate around its own axis inside the conveying pipe. During the rotation, the auger's spiral blades apply an upward thrust to the solid particles entering the conveying pipe. The solid particles are pushed and lifted upward along the inner wall of the conveying pipe by the spiral blades. The conveying pipe extends through and out of the storage tank. The solid particles lifted by the auger to the end of the conveying pipe are discharged to the outside of the storage tank through the discharge pipe. The discharge pipe is connected to the conveying pipe, and the solid particles flow out through the outlet of the discharge pipe. The submersible pump runs continuously, and the dirty coolant collected in the collection tank is continuously sent to the separation cylinder for centrifugal separation. The solid particles discharged from the bottom of the separation cylinder are continuously discharged from the storage tank through the conveying pipe and the discharge pipe, realizing the continuous operation of coolant purification treatment. A submersible pump is fixed inside the collection tank. The pump actively extracts the dirty coolant from the collection tank and transports it to the separation cylinder, achieving forced flow of the dirty coolant from the collection tank to the separation cylinder. This ensures sufficient centrifugal separation pressure for the coolant within the separation cylinder, improving the processing efficiency of the separation components. The conveying pipe is connected to the guide hopper, allowing solid particles collected in the guide hopper to directly enter the conveying pipe. This shortens the conveying path of solid particles from the outlet of the separation cylinder to the inlet of the conveying pipe, preventing residual accumulation of solid particles along the conveying path. An auger, in conjunction with a lifting motor, spirally lifts and conveys the solid particles entering the conveying pipe. The auger's conveying process is continuous and uninterrupted, achieving continuous automatic discharge of solid particles from the bottom of the separation cylinder to the outside of the storage tank. This prevents blockage and deposition of solid particles inside the conveying pipe. The discharge pipe is connected to the end of the conveying pipe, allowing solid particles discharged from the discharge pipe to be directly discharged to the outside of the storage tank, achieving seamless integration between the solid particles and the inside of the storage tank. Coolant isolation prevents discharged solid particles from falling back into the collection tank and causing secondary pollution. The submersible pump and auger are driven independently, with the pump's flow rate and the auger's discharge speed adjustable independently. This allows the liquid-solid processing capacity of the separation assembly to be adjusted according to different processing conditions, improving its adaptability to various working conditions. The end of the delivery pipe is fixedly connected to the separation cylinder, directly guiding the dirty coolant delivered by the submersible pump into the separation cylinder. Upon entering the separation cylinder, the dirty coolant is immediately subjected to centrifugal separation by the filter, shortening the residence time from entry to completion and increasing the coolant throughput per unit time. The delivery pipe extends through the storage tank, extending the auger's discharge path from inside to outside the tank. The discharge pipe is located outside the storage tank, allowing operators to collect discharged solid particles directly from outside without opening the tank for cleaning, reducing the daily maintenance difficulty of the separation assembly.

[0016] The collection assembly includes a second connecting pipe, with oil removal water inlet buckets fixed at both ends of the second connecting pipe. A first connecting pipe is connected to the second connecting pipe, and a water pump is connected to the end of the first connecting pipe. The water pump is fixed on the float, and a drain pipe is connected to the outlet of the water pump. The drain pipe extends through and out of the storage tank.

[0017] With the above structure, the float floats on the surface of the coolant in the collection tank. The float drives the water pump to rise and fall synchronously with the rise and fall of the coolant level, so that the water pump inlet is always kept below the coolant level. The oil removal water inlet floats above the coolant level in the collection tank. The opening of the oil removal water inlet is in contact with the coolant level. The floating oil on the coolant surface flows into the oil removal water inlet under the action of surface tension. The floating oil and part of the coolant in the oil removal water inlet are collected through the second connecting pipe and flow into the first connecting pipe. The water pump draws out the liquid containing floating oil through the first connecting pipe and discharges the liquid containing floating oil to the outside of the storage tank through the drain pipe, realizing the online removal of floating oil on the surface of the coolant. Both ends of the second connecting pipe are equipped with oil removal water inlets. The two oil removal water inlets are located in different positions inside the collection tank, and the floating oil on the surface of the liquid in different areas of the collection tank is collected simultaneously. The float-driven water pump rises and falls with the liquid level, ensuring the pump remains at a suitable depth below the liquid surface. This guarantees normal operation of the pump at different liquid levels within the collection tank, preventing pump malfunctions such as dry suction or the suction inlet detaching from the liquid surface due to level changes. The oil removal inlet uses surface tension to collect floating oil from the coolant surface, achieving non-contact separation and avoiding excessive coolant extraction as with traditional oil suction methods, thus reducing coolant waste. The water pump, in conjunction with the drain pipe, continuously discharges the oil-containing liquid from the storage tank. This system enables continuous online removal of surface oil from the coolant, preventing coolant deterioration and reduced cooling performance caused by oil accumulation. Two oil removal inlets are located at both ends of the connecting pipe, simultaneously collecting surface oil from different areas within the collection tank. This expands the coverage of oil collection and improves the efficiency of oil removal. The drain pipe extends through the storage tank to directly discharge the oily liquid to the outside, preventing secondary diffusion of the oily liquid inside the storage tank and ensuring the long-term cleanliness of the coolant inside the storage tank.

[0018] Compared with the prior art, the beneficial effects of the present invention are: The precise adjustment of the distance between the driving and driven wheels is achieved by a moving motor in conjunction with a lead screw and a moving seat, ensuring the rotational stability and machining accuracy of the workpiece during grinding. A conveyor belt enables automatic workpiece feeding, and a triangular block at the discharge port pushes the workpiece upwards for automatic unloading, improving the continuity and production efficiency of the grinding process. A partition divides the storage tank into a storage compartment and a collection compartment, achieving physical isolation between dirty and clean coolant. The centrifugal force generated by the rotating motor in the filter barrel intercepts solid particles in the coolant on the inner wall surface. An auger, in conjunction with a lifting motor, continuously transports these solid particles to the outside of the storage tank, achieving isolation between the solid particles and the coolant. An oil removal water inlet uses surface tension to collect floating oil on the coolant surface, and a water pump, in conjunction with a drain pipe, continuously discharges the liquid containing floating oil, achieving online removal of floating oil from the coolant surface. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the front three-dimensional structure inside the present invention; Figure 3 This is a schematic diagram of the rear three-dimensional structure inside the present invention; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the collection component structure in this invention; Figure 6 This is a schematic diagram of the front three-dimensional structure of the separation component in this invention; Figure 7 This is a schematic diagram of the rear three-dimensional structure of the separation component in this invention; Figure 8 This is a cross-sectional structural diagram of the separation component in this invention.

[0020] In the diagram: 1. Machine body; 2. Liquid storage tank; 3. Secondary cutting tool feed device; 4. Mounting box one; 5. Moving base; 6. Moving motor; 7. Mounting plate; 8. Conveyor belt; 9. Conveyor motor; 10. Conveyor trough; 11. Mounting box two; 12. Drive wheel; 13. Baffle; 14. Feeding motor; 15. Lead screw; 16. Driven wheel; 17. Drain pipe; 18. Liquid storage tank; 19. Partition plate; 20. Liquid collection tank; 21. Conveying pipe; 2. Liquid inlet; 23. Water pump; 24. Connecting pipe one; 25. Connecting pipe two; 26. Oil removal water inlet hopper; 27. Float; 28. Lifting motor; 29. ​​Discharge pipe; 30. Liquid outlet pipe; 31. Guide hopper; 32. Fixing plate; 33. Support; 34. Submersible pump; 35. Liquid delivery pipe; 36. Rotary motor; 37. Cover plate; 38. Separation cylinder; 39. Connecting column; 40. Circular plate; 41. Filter barrel; 42. Connecting rod. Detailed Implementation

[0021] 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.

[0022] like Figures 1-8As shown, the present invention provides a technical solution: a high-efficiency adjustable coolant circulating centerless grinder, comprising a machine body 1, a grinding assembly inside the machine body 1, the grinding assembly including a coolant tank 2, the coolant tank 2 being fixed inside the machine body 1, a mounting plate 7 being disposed above the coolant tank 2, two lead screws 15 being rotatably disposed above the mounting plate 7, and a moving motor 6 being fixed at both ends of the mounting plate 7, the output shafts of the two moving motors 6 being fixedly connected to the lead screws 15 at corresponding positions, and two moving seats 5 being slidably disposed above the mounting plate 7, the two moving seats 5 being threadedly connected to the lead screws 15 at corresponding positions. Mounting box 1 4 and mounting box 2 11 are fixed on the top of the base 5. The driven wheel 16 is rotatably installed inside the mounting box 1 4, and the driving wheel 12 is rotatably installed inside the mounting box 2 11. A grinding motor is installed on the side of the mounting box 2 11, and the output shaft of the grinding motor is fixedly connected to the driving wheel 12. A secondary cutting tool feed device 3 is installed above the mounting box 1 4. A liquid guide groove and a liquid outlet 22 are opened on the top of the mounting plate 7. The liquid outlet 22 is connected to the liquid guide groove. A baffle 13 is fixed on the side of the mounting plate 7. A separation component and a collection component are installed inside the liquid storage tank 2. A conveying component is installed on the top of the mounting plate 7.

[0023] The moving motor 6 drives the lead screw 15 to rotate, and the lead screw 15 drives the moving seat 5 to slide along the mounting plate 7. The moving seat 5 drives the mounting box 1 4 and the mounting box 2 11 to move towards each other or away from each other, adjusting the distance between the driving wheel 12 and the driven wheel 16 to meet the grinding requirements of workpieces with different diameters. The grinding motor drives the driving wheel 12 to rotate, and the driving wheel 12 drives the workpiece to rotate. The driven wheel 16 provides support for the workpiece and rotates passively with the workpiece. The workpiece completes the grinding process between the driving wheel 12 and the driven wheel 16. The auxiliary tool feeds... The device 3 provides feed motion during the grinding wheel dressing process to dress the working surface of the grinding wheel, restore the cutting ability and geometric accuracy of the grinding wheel. The coolant generated during the grinding process carries the grinding debris and metal powder to the liquid guide groove above the mounting plate 7. After being collected in the liquid guide groove, it flows into the liquid collection chamber 20 inside the liquid storage tank 2 through the liquid drop port 22 for purification. The baffle 13 restricts the flow direction of the coolant and grinding debris to prevent the coolant from overflowing from the edge of the mounting plate 7 and guides all the coolant into the liquid guide groove and the liquid drop port 22. The moving motor 6, together with the lead screw 15 and the moving seat 5, enables precise adjustment of the distance between the driving wheel 12 and the driven wheel 16, allowing the grinding machine to quickly adapt to the processing requirements of workpieces with different diameters, improving the versatility and ease of adjustment of the equipment. The cooperative structure of the driving wheel 12 and the driven wheel 16 provides stable support and drive for the workpiece, ensuring the rotational stability and processing accuracy of the workpiece during grinding. The coolant guide groove and the coolant drop outlet 22 form a coolant recovery channel on the mounting plate 7, realizing the immediate collection and guiding of coolant in the grinding area, shortening the coolant return path, and improving circulation efficiency. The baffle 13 prevents coolant from overflowing from the edge of the mounting plate 7, ensuring that all coolant enters the coolant guide groove, avoiding coolant waste and workshop environmental pollution.

[0024] The conveying assembly includes a conveying trough plate 10, which is fixed above the mounting plate 7. One end of the conveying trough plate 10 is equipped with a conveyor belt 8 via two conveying rollers. A conveying motor 9 is fixed to the side of the conveying trough plate 10. The output shaft of the conveying motor 9 is connected to one of the conveying rollers via a commutator. The conveying trough plate 10 has a grinding port and a discharge port. The grinding port is located between the driving wheel 12 and the driven wheel 16. A triangular block is fixed inside the conveying trough plate 10 and is located at the discharge port. Several conveying rollers are rotatably arranged inside the other end of the conveying trough plate 10. The several conveying rollers and the conveyor belt 8 are at the same horizontal height. A feeding motor 14 is fixed below the other end of the conveying trough plate 10 and is connected to one of the conveying rollers via a commutator. The conveyor motor 9 drives the first conveyor roller to rotate via a commutator. The first conveyor roller drives the conveyor belt 8 to rotate. The conveyor belt 8 conveys the workpiece to be ground from the feed end of the conveyor trough plate 10 to the grinding port. When the workpiece is conveyed to the grinding port position by the conveyor belt 8, the drive wheel 12 and the driven wheel 16 clamp and drive the workpiece. The grinding process is completed at the grinding port. The feeding motor 14 drives the second conveyor roller to rotate via a commutator. The second conveyor roller drives the workpiece that has been ground to continue moving along the conveyor trough plate 10 towards the discharge port. When the workpiece moves to the position of the triangular block at the discharge port, the inclined surface of the triangular block pushes the workpiece upward from inside the conveyor trough plate 10, so that the workpiece leaves the conveyor trough plate 10 through the discharge port, completing the automatic unloading. The conveyor belt 8 and several second conveyor rollers are at the same horizontal height to ensure that the workpiece maintains a horizontal movement trajectory during the conveying process and avoids the workpiece from shifting or tilting during the conveying process. The conveyor belt 8, in conjunction with the conveyor motor 9, enables automatic feeding of workpieces, replacing manual feeding operations, reducing the labor intensity of operators, and improving the continuity and production efficiency of grinding. The triangular block at the discharge port pushes the workpiece out from the conveyor trough 10, realizing automatic unloading of the workpiece after grinding, avoiding the manual material handling process, and shortening the processing auxiliary time. The conveyor belt 8 and the conveyor roller 2 are set at the same horizontal height, ensuring the horizontal posture of the workpiece throughout the entire conveying path, preventing workpiece jamming or offset failures caused by changes in posture. The conveyor motor 9 and the feeding motor 14 independently drive the conveyor belt 8 and the conveyor roller 2, respectively, so that the feeding speed and the discharge speed can be adjusted according to the processing rhythm, improving the equipment's adaptability to different processing technologies.

[0025] The liquid storage tank 2 is internally divided into a storage chamber 18 and a collection chamber 20 by a partition 19. A drain outlet 22 is connected to the collection chamber 20. Both the storage chamber 18 and the collection chamber 20 are filled with coolant. A cooling assembly is installed inside the storage chamber 18, with its outlet located above the drive wheel 12 and the driven wheel 16. The partition 19 divides the liquid storage tank 2 into two independent chambers: the storage chamber 18 and the collection chamber 20. The collection chamber 20 collects dirty coolant carrying impurities that flows in from the drain outlet 22, while the storage chamber 18 stores clean coolant that has undergone purification treatment. After the coolant enters the collection tank 20 through the drop outlet 22, it undergoes preliminary sedimentation and separation in the collection tank 20. Heavier solid particles settle at the bottom of the collection tank 20. The coolant that has undergone preliminary sedimentation in the collection tank 20 is transported to the separation component for further purification. The purified clean coolant flows into the storage tank 18 through the outlet pipe 30 for storage. The cooling component inside the storage tank 18 draws the clean coolant out of the storage tank 18 and transports it to the top of the driving wheel 12 and the driven wheel 16 through the outlet of the cooling component. After the coolant flows out from the outlet, it is directly poured into the grinding area to cool and lubricate the grinding wheel and the workpiece. The partition 19 divides the liquid storage tank 2 into a liquid storage chamber 18 and a liquid collection chamber 20, achieving physical isolation of dirty coolant and clean coolant storage. This avoids the mixing of purified clean coolant with untreated dirty coolant, ensuring the cleanliness of the coolant in the liquid storage chamber 18. The liquid collection chamber 20 serves as a collection and initial sedimentation site for dirty coolant, allowing large grinding particles to settle before entering the separation component, reducing the processing load on the separation component and extending its maintenance cycle. The coolant outlet of the cooling component is located above the drive wheel 12 and the driven wheel 16, allowing the coolant to be directly poured into the grinding area, achieving precise cooling and lubrication of the grinding area and ensuring the efficiency of coolant use. The clean coolant stored in the liquid storage chamber 18 provides a continuous and stable coolant supply for grinding, ensuring uninterrupted coolant supply during continuous operation of the grinding machine.

[0026] The separation assembly includes a support 33, which is fixed inside the collection chamber 20. A fixing plate 32 is fixed above the support 33, and a guide hopper 31 is fixed below the fixing plate 32. A separation cylinder 38 is fixed above the fixing plate 32, and a cover plate 37 is fixed above the separation cylinder 38. A rotary motor 36 is fixed above the cover plate 37, and a connecting column 39 is fixedly connected to the output shaft of the rotary motor 36. The connecting column 39 is rotatably positioned above the cover plate 37. A circular plate 40 is fixed below the connecting column 39, and several connecting rods 42 are fixed below the circular plate 40. A circular plate 40 is fixed below the upper circular plate 40, and a filter barrel 41 is fixed between the two circular plates 40. A liquid outlet pipe 30 is rotatably connected to the lower part of the circular plate 40. The end of the liquid outlet pipe 30 passes through the partition plate 19 and is connected to the liquid storage tank 18. The output shaft of the rotary motor 36 is fixedly connected to the connecting column 39. The rotary motor 36 drives the connecting column 39 to rotate around its own axis. The connecting column 39 drives the upper circular plate 40 to rotate synchronously. The upper circular plate 40 transmits the rotational power to the lower circular plate 40 through several connecting rods 42. The two circular plates 40 rotate synchronously under the drive of the rotary motor 36. The filter barrel 41, fixed between the two circular plates 40, rotates synchronously with the circular plates 40. During rotation, the filter barrel 41 generates centrifugal force. Under this centrifugal force, the coolant inside the filter barrel 41 is thrown towards the filter holes. As the coolant containing solid particles rotates inside the filter barrel 41, it passes through the filter holes and is thrown into the annular space between the separation cylinder 38 and the filter barrel 41. The solid particles in the coolant are intercepted by the filter holes on the inner wall surface of the filter barrel 41. The clean coolant that has passed through the filter holes of the filter barrel 41 flows through the lower circular plate... 40 flows into the outlet pipe 30, and the end of the outlet pipe 30 passes through the partition 19. The clean coolant flows through the outlet pipe 30 and the partition 19 into the storage tank 18 for storage. The outlet pipe 30 is rotatably connected to the circular plate 40 below. The outlet pipe 30 remains stationary, and the circular plate 40 rotates around the axis of the outlet pipe 30. The opening of the outlet pipe 30 is connected to the outlet channel below the circular plate 40. The solid particles intercepted on the inner wall surface of the filter bucket 41 slide down the inner wall of the filter bucket 41 under the action of gravity. After the solid particles are deposited at the bottom of the filter bucket 41, they are collected and discharged through the guide bucket 31. The bracket 33 and the fixing plate 32 fix the separator 38 inside the liquid collection tank 20, so that the separator 38 is submerged below the surface of the coolant in the liquid collection tank 20. This shortens the delivery distance of the submersible pump 34 and the liquid delivery pipe 35, and reduces the pressure loss of the coolant during delivery. The cover plate 37 seals the upper opening of the separator 38 to prevent coolant from splashing out from the upper end of the separator 38 when the rotary motor 36 drives the filter barrel 41 to rotate at high speed, thus avoiding waste of coolant and contamination of the external parts of the separator 38. The rotary motor 36 drives the two circular plates 40 to rotate synchronously through the connecting column 39. The two circular plates 40 simultaneously provide rotational driving force and radial constraint to the upper and lower ends of the filter barrel 41, so that the filter barrel 41 maintains its cylindrical geometry under high-speed rotation, preventing radial deformation of the filter barrel 41 under centrifugal force. The centrifugal force generated by the rotation of the filter barrel 41 with the circular plates 40 causes the solids in the coolant to be separated. The particles accelerate towards the inner wall of the filter bucket 41 in the centrifugal force field. The solid particles are intercepted on the inner wall surface of the filter bucket 41, realizing efficient solid-liquid separation of coolant and solid particles. The outlet pipe 30 and the circular plate 40 are connected by a rotating method. The outlet pipe 30 remains stationary, avoiding torsional load on the partition plate 19 when the outlet pipe 30 rotates with the circular plate 40. This ensures the sealing reliability and long-term stability of the outlet pipe 30 through the partition plate 19. The solid particles intercepted on the inner wall of the filter bucket 41 slide downwards and collect under the action of gravity. The solid particles can be automatically discharged without additional power, reducing the energy consumption of the separation component. The guide bucket 31 collects and guides the solid particles discharged from the bottom of the separation cylinder 38, and concentrates the dispersed solid particles to the inlet end of the conveying pipe 21, avoiding the accumulation and diffusion of solid particles on the upper surface of the fixed plate 32, and ensuring the smooth conveying of solid particles.

[0027] The separation assembly also includes a conveying pipe 21 and a submersible pump 34. The conveying pipe 21 is connected to the guide hopper 31 and extends through the storage tank 2. An auger is rotatably installed inside the conveying pipe 21. A lifting motor 28 is fixed to the end of the conveying pipe 21, and the output shaft of the lifting motor 28 is fixedly connected to the auger. A discharge pipe 29 is fixed to the end of the conveying pipe 21 and is connected to the conveying pipe 21. The submersible pump 34 is fixed inside the collection chamber 20. The outlet end of the submersible pump 34 is connected to a liquid delivery pipe 35, and the end of the liquid delivery pipe 35 is connected to the separation tank 20. The separator 38 is fixedly connected; the submersible pump 34 is fixed below the coolant level inside the collection tank 20. The submersible pump 34 draws out the dirty coolant after preliminary sedimentation from the collection tank 20. The dirty coolant enters the delivery pipe 35 through the outlet of the submersible pump 34. The end of the delivery pipe 35 is fixedly connected to the separator 38. The dirty coolant delivered by the submersible pump 34 enters the separation tank 38 through the delivery pipe 35. The dirty coolant undergoes centrifugal solid-liquid separation inside the separation tank 38. The delivery pipe 21 is connected to the guide hopper 31. Solid particles collected in bucket 31 enter the lower inlet of conveying pipe 21. An auger, rotating inside conveying pipe 21, receives the solid particles. A lifting motor 28 is fixed to the end of conveying pipe 21, and its output shaft is fixedly connected to the auger. The lifting motor 28 drives the auger to rotate around its own axis inside conveying pipe 21. During rotation, the auger's spiral blades apply an upward thrust to the solid particles entering conveying pipe 21, causing the solid particles to be pushed upwards along the inner wall of conveying pipe 21 by the spiral blades. The solid particles are pushed and lifted, and the conveying pipe 21 extends through the storage tank 2. The solid particles lifted to the end of the conveying pipe 21 by the auger are discharged to the outside of the storage tank 2 through the discharge pipe 29. The discharge pipe 29 is connected to the conveying pipe 21. The solid particles flow out through the opening of the discharge pipe 29. The submersible pump 34 runs continuously. The dirty coolant collected in the collection tank 20 is continuously sent to the separation cylinder 38 for centrifugal separation. The solid particles discharged from the bottom of the separation cylinder 38 are continuously discharged from the storage tank 2 through the conveying pipe 21 and the discharge pipe 29, realizing the continuous operation of coolant purification treatment. Submersible pump 34 is fixed inside the collection tank 20. Submersible pump 34 actively extracts the dirty coolant from the collection tank 20 and transports it to the separation cylinder 38, achieving forced flow of dirty coolant from the collection tank 20 to the separation cylinder 38. This ensures that the coolant receives sufficient centrifugal separation pressure within the separation cylinder 38, improving the processing efficiency of the separation component. The conveying pipe 21 is connected to the guide hopper 31, allowing solid particles collected in the guide hopper 31 to directly enter the conveying pipe 21, shortening the transport time of solid particles from the outlet of the separation cylinder 38 to the inlet of the conveying pipe 21. To prevent solid particles from accumulating on the conveying path, an auger, in conjunction with a lifting motor 28, spirally lifts and conveys the solid particles entering the conveying pipe 21. The auger continuously and automatically conveys the solid particles from the bottom of the separation cylinder 38 to the outside of the storage tank 2, preventing blockage and deposition inside the conveying pipe 21. A discharge pipe 29 is connected to the end of the conveying pipe 21, allowing solid particles discharged directly to the outside of the storage tank 2, isolating them from the coolant inside the storage tank 2 and preventing secondary contamination from the discharged solid particles falling back into the collection bin 20. The submersible pump 34 and the auger are driven independently, with the pump flow rate and auger discharge speed adjustable independently, allowing the liquid-solid processing capacity of the separation component to be adjusted according to different processing conditions, improving its adaptability to various working conditions. The end of the delivery pipe 35 is fixedly connected to the separation cylinder 38, directly introducing the dirty coolant delivered by the submersible pump 34 into the separation cylinder 38 for dirty cooling. After entering the separator 38, the liquid is immediately subjected to centrifugal separation by the filter 41, which shortens the residence time of the dirty coolant from entering the separator 38 to completing the separation, and increases the amount of coolant processed per unit time. The conveying pipe 21 extends through the storage tank 2, so that the auger slag discharge path extends from the inside of the storage tank 2 to the outside of the storage tank 2. The discharge pipe 29 is located outside the storage tank 2, and the operator can directly collect the discharged solid particles from the outside of the storage tank 2 without opening the storage tank 2 for cleaning, which reduces the difficulty of daily maintenance of the separation component.

[0028] The collection assembly includes a second connecting pipe 25, with oil-removing water inlet hoppers 26 fixed at both ends. A first connecting pipe 24 is connected to the second connecting pipe 25, and a water pump 23 is connected to the end of the first connecting pipe 24. The water pump 23 is fixed to a float 27 and immersed in the coolant. The outlet of the water pump 23 is connected to a drain pipe 17, which extends through and out of the storage tank 2. The float 27 floats on the surface of the coolant in the collection chamber 20. The float 27 drives the water pump 23 to rise and fall synchronously with the rise and fall of the coolant level, ensuring that the inlet of the water pump 23 is always below the coolant level. The oil-removing water inlet hoppers 26 float on the surface of the coolant in the collection chamber 20. Above, the opening of the oil removal water inlet 26 contacts the surface of the coolant. Under the action of surface tension, the floating oil on the surface of the coolant flows into the oil removal water inlet 26. The floating oil and part of the coolant in the oil removal water inlet 26 are collected through the second connecting pipe 25 and flow into the first connecting pipe 24. The water pump 23 draws out the liquid containing floating oil through the first connecting pipe 24. The water pump 23 discharges the liquid containing floating oil to the outside of the storage tank 2 through the drain pipe 17, realizing the online removal of floating oil on the surface of the coolant. Both ends of the second connecting pipe 25 are equipped with oil removal water inlets 26. The two oil removal water inlets 26 are located at different positions inside the collection chamber 20, and the floating oil on the surface of the liquid in different areas of the collection chamber 20 is collected simultaneously. The float 27 drives the water pump 23 to rise and fall with the liquid level, ensuring that the water pump 23 is always at a suitable depth below the liquid surface. This guarantees the normal operation of the water pump 23 at different liquid levels in the collection tank 20 and avoids malfunctions such as the water pump 23 not drawing water or the suction inlet leaving the liquid surface due to changes in liquid level. The oil removal water inlet 26 uses the principle of surface tension to collect floating oil on the surface of the coolant, achieving non-contact separation of floating oil in the coolant. This avoids excessive extraction of coolant by traditional oil suction methods and reduces coolant waste. The water pump 23, in conjunction with the drain pipe 17, continuously discharges the liquid containing floating oil from the storage tank. 2. This system enables continuous online removal of floating oil from the coolant surface, preventing coolant deterioration and reduced cooling performance caused by the accumulation of floating oil on the coolant surface. Two oil removal water inlets 26 are respectively installed at both ends of the connecting pipe 25, simultaneously collecting floating oil from different areas inside the collection tank 20, expanding the coverage of floating oil collection and improving the efficiency of floating oil removal. The drain pipe 17 extends through the storage tank 2 to directly discharge the oily liquid to the outside of the storage tank 2, avoiding secondary diffusion of the oily liquid inside the storage tank 2 and ensuring the long-term cleanliness of the coolant inside the storage tank 2.

[0029] Working principle: The moving motor 6 drives two moving seats 5 to move towards or away from each other via the lead screw 15, thereby moving mounting boxes 1-4 and 2-11 to adjust the distance between the driving wheel 12 and the driven wheel 16 to meet the processing requirements of workpieces with different diameters. The grinding motor drives the driving wheel 12 to rotate and cooperates with the driven wheel 16 to clamp and grind the workpiece. The auxiliary dressing feed device 3 dresses the working surface of the grinding wheel. At the same time, the conveying motor 9 drives the conveyor belt 8 to transport the workpiece to be ground to the grinding port. After grinding is completed, the feeding motor 14 drives the second conveyor roller to continue transporting the workpiece to the discharge port. After the workpiece reaches the discharge port, it is then... The inclined surface of the triangular block pushes it upward to complete the automatic unloading. During the grinding process, the coolant carrying grinding chips and metal powder is collected by the guide groove on the mounting plate 7 and flows into the collection tank 20 through the drop outlet 22. In the collection tank 20, the heavier solid particles initially settle. The submersible pump 34 draws out the dirty coolant after initial settling and sends it into the separation cylinder 38 through the delivery pipe 35. The rotary motor 36 drives the connecting column 39 and the two circular plates 40 to rotate synchronously. The filter barrel 41, which is fixed between the two circular plates 40, generates centrifugal force as the circular plates 40 rotate. The solid particles in the coolant inside the filter barrel 41 are separated. The clean coolant intercepted on the inner wall surface of the filter barrel 41 and passing through the filter holes of the filter barrel 41 flows through the outlet pipe 30 and the partition 19 into the storage tank 18 for storage. The solid particles intercepted on the inner wall of the filter barrel 41 slide downward to the bottom of the filter barrel 41 under the action of gravity and are collected and discharged through the guide bucket 31. The solid particles collected in the guide bucket 31 enter the lower inlet of the conveying pipe 21. The lifting motor 28 drives the auger to rotate. The spiral blades of the auger apply an upward thrust to the solid particles, pushing them up along the conveying pipe 21. The solid particles are discharged to the outside of the storage tank 2 through the discharge pipe 29 at the end of the conveying pipe 21. The float 27 floats on the surface of the coolant in the collection tank 20 and drives the water pump 23 to rise and fall with the liquid level. The opening of the oil removal water inlet 26 contacts the surface of the coolant, and the floating oil on the surface of the coolant flows into the oil removal water inlet 26 under the action of surface tension. The water pump 23 discharges the liquid containing floating oil to the outside of the storage tank 2 through the connecting pipe 24 and the drain pipe 17. The cooling components in the storage tank 18 draw out the purified clean coolant and deliver it above the driving wheel 12 and the driven wheel 16. The coolant is poured into the grinding area to cool and lubricate the grinding wheel and the workpiece, completing the complete circulation process of the coolant. The moving motor 6, in conjunction with the lead screw 15 and the moving base 5, enables precise adjustment of the distance between the driving wheel 12 and the driven wheel 16, allowing the grinding machine to adapt to the processing requirements of workpieces with different diameters. The cooperative structure of the driving wheel 12 and the driven wheel 16 ensures the rotational stability and processing accuracy of the workpiece during grinding. The conveyor belt 8 enables automatic workpiece feeding, and the triangular block pushes the workpiece upward at the discharge port to complete automatic unloading, replacing manual loading and unloading operations and improving the continuity and production efficiency of grinding. The conveyor belt 8 and the conveyor roller 2 are at the same horizontal height, ensuring that the workpiece maintains a horizontal posture during conveying. The conveyor motor 9 and the feeding motor 14 are driven independently to adjust the feeding and discharging speeds. The coolant can be adjusted separately. The guide trough and the drop outlet 22 form a coolant recovery channel. The baffle 13 prevents coolant from overflowing from the edge of the mounting plate 7, realizing the immediate collection and guiding of coolant. The partition 19 divides the storage tank 2 into a storage chamber 18 and a collection chamber 20, realizing the physical isolation of dirty coolant and clean coolant. The collection chamber 20 allows large particles of grinding debris to settle first, reducing the processing load of the separation components. The centrifugal force generated by the rotary motor 36 drives the filter barrel 41 to accelerate the solid particles in the coolant towards the inner wall of the filter barrel 41 and intercept them on the inner wall surface of the filter barrel 41, realizing efficient solid-liquid separation of coolant and solid particles. The outlet pipe 30 The rotating connection between the outlet pipe 30 and the circular plate 40 keeps the outlet pipe 30 stationary, ensuring the sealing reliability of the outlet pipe 30 through the partition 19. Solid particles intercepted on the inner wall of the filter barrel 41 slide downwards under gravity and are then discharged through the guide bucket 31. The auger, in conjunction with the lifting motor 28, spirally lifts and conveys the solid particles entering the conveying pipe 21, realizing continuous automatic discharge of solid particles from the bottom of the separation cylinder 38 to the outside of the storage tank 2. The discharge pipe 29 directly discharges the solid particles to the outside of the storage tank 2, achieving isolation between the solid particles and the coolant. The submersible pump 34 and the auger are driven independently, allowing the liquid delivery flow rate and slag discharge speed to be adjusted according to different processing conditions. The float 27 drives the water pump 23 to rise and fall with the liquid level, avoiding the water pump 23 from malfunctioning due to changes in liquid level. The oil removal water inlet 26 uses the principle of surface tension to collect the floating oil on the surface of the coolant, realizing non-contact separation of the floating oil. The water pump 23, together with the drain pipe 17, continuously discharges the liquid containing floating oil, realizing online continuous removal of floating oil from the surface of the coolant. The two oil removal water inlets 26 are respectively set at both ends of the connecting pipe 25 to collect the floating oil on the surface of the liquid in different areas inside the liquid collection tank 20. The cooling components in the liquid storage tank 18 continuously deliver clean coolant to the grinding area, ensuring that the coolant supply is uninterrupted when the grinding machine is in continuous operation.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A high-efficiency adjustable coolant circulating centerless grinder, comprising a machine body (1), wherein a grinding assembly is disposed inside the machine body (1), characterized in that: The polishing assembly includes a liquid storage tank (2), which is fixed inside the body (1). A mounting plate (7) is provided above the liquid storage tank (2). Two lead screws (15) are rotatably mounted above the mounting plate (7). Movable motors (6) are fixed at both ends of the mounting plate (7). The output shafts of the two movable motors (6) are fixedly connected to the lead screws (15) at the corresponding positions. Two movable seats (5) are slidably mounted above the mounting plate (7). The two movable seats (5) are threadedly connected to the lead screws (15) at the corresponding positions. Mounting box one (4) and mounting box two (11) are fixed above the two movable seats (5) respectively. The first mounting box (4) has a driven wheel (16) inside, the second mounting box (11) has a driving wheel (12) inside, the second mounting box (11) has a grinding motor on its side, the output shaft of the grinding motor is fixedly connected to the driving wheel (12), the first mounting box (4) has a secondary cutting tool feeding device (3) on its top, the mounting plate (7) has a liquid guide groove and a liquid outlet (22) on its top, the liquid outlet (22) is connected to the liquid guide groove, the mounting plate (7) has a baffle (13) fixed on its side, the liquid storage tank (2) has a separation component and a collection component inside, and the mounting plate (7) has a conveying component on its top.

2. The high-efficiency adjustable coolant circulating centerless grinding machine according to claim 1, characterized in that: The conveying assembly includes a conveying trough plate (10), which is fixed above the mounting plate (7). One end of the conveying trough plate (10) is provided with a conveyor belt (8) via two conveying rollers. A conveying motor (9) is fixed on the side of the conveying trough plate (10). The output shaft of the conveying motor (9) is connected to one of the conveying rollers via a commutator. A grinding port and a discharge port are provided on the conveying trough plate (10). The grinding port is located between the driving wheel (12) and the driven wheel (16). A triangular block is fixed inside the conveying trough plate (10). The triangular block is located at the discharge port. Several conveying rollers are rotatably arranged inside the other end of the conveying trough plate (10). The several conveying rollers and the conveyor belt (8) are at the same horizontal height. A feeding motor (14) is fixed below the other end of the conveying trough plate (10). The feeding motor (14) is connected to one of the conveying rollers via a commutator.

3. The high-efficiency adjustable coolant circulating centerless grinding machine according to claim 2, characterized in that: The liquid storage tank (2) is fixed with a partition (19) inside, which divides the liquid storage tank (2) into a liquid storage chamber (18) and a liquid collection chamber (20). The liquid outlet (22) is connected to the liquid collection chamber (20). Both the liquid storage chamber (18) and the liquid collection chamber (20) are filled with coolant. The liquid storage chamber (18) is equipped with a cooling component. The outlet of the cooling component is located above the driving wheel (12) and the driven wheel (16).

4. The high-efficiency adjustable coolant circulating centerless grinding machine according to claim 3, characterized in that: The separation assembly includes a support (33), which is fixed inside the collection tank (20). A fixing plate (32) is fixed above the support (33), and a guide bucket (31) is fixed below the fixing plate (32). A separation cylinder (38) is fixed above the fixing plate (32), and a cover plate (37) is fixed above the separation cylinder (38). A rotary motor (36) is fixed above the cover plate (37), and a connecting column (39) is fixedly connected to the output shaft of the rotary motor (36). (39) Rotatably mounted above the cover plate (37), a circular plate (40) is fixed below the connecting column (39), several connecting rods (42) are fixed below the circular plate (40), a circular plate (40) is fixed below the several connecting rods (42), a filter bucket (41) is fixed between the two circular plates (40), and an outlet pipe (30) is rotatably connected below the circular plate (40). The end of the outlet pipe (30) passes through the partition plate (19), and the end of the outlet pipe (30) is connected to the liquid storage tank (18).

5. The high-efficiency adjustable coolant circulating centerless grinding machine according to claim 4, characterized in that: The separation assembly also includes a conveying pipe (21) and a submersible pump (34). The conveying pipe (21) is connected to the guide bucket (31). The conveying pipe (21) extends through the storage tank (2). An auger is rotatably installed inside the conveying pipe (21). A lifting motor (28) is fixed at the end of the conveying pipe (21). The output shaft of the lifting motor (28) is fixedly connected to the auger. A discharge pipe (29) is fixed at the end of the conveying pipe (21). The discharge pipe (29) is connected to the conveying pipe (21). The submersible pump (34) is fixed inside the collection chamber (20). The outlet end of the submersible pump (34) is connected to a liquid delivery pipe (35). The end of the liquid delivery pipe (35) is fixedly connected to the separation cylinder (38).

6. The high-efficiency adjustable coolant circulating centerless grinding machine according to claim 5, characterized in that: The collection assembly includes a second connecting pipe (25), with oil removal water inlet buckets (26) fixed at both ends of the second connecting pipe (25). A first connecting pipe (24) is connected to the second connecting pipe (25), and a water pump (23) is connected to the end of the first connecting pipe (24). The water pump (23) is fixed on the float (27), and a drain pipe (17) is connected to the outlet of the water pump (23). The drain pipe (17) extends through and out of the storage tank (2).

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