Circulating oiling device for gear machining

Abstract

The utility model discloses a circulating oiling device for gear processing, which comprises an oil pan, a lift pump set, a lift pipe set and a spray pipe head, the lift pump set is fixedly arranged at the bottom end of the oil pan, the output end of the lift pump set is connected with a dust collection box, and the dust collection box is arranged at the bottom of the lift pipe set. The lifting pump set comprises a fixed disc box, a driving motor, a rotary disc and a plurality of pistons, the pistons are slidably arranged in piston cylinders in the rotary disc, one ends of the pistons are connected with sliding pins, and the sliding pins are slidably matched in eccentric fixed ring seats, so that the rotary disc rotates to drive the pistons to reciprocate in the piston cylinders, and the oil suction and discharge process is completed. A metal filter screen and a permanent magnet block are arranged in the oil pan and the dust collection box and are used for adsorbing and filtering metal waste residues in the oil liquid; settling baffles which are obliquely arranged and arranged in a staggered mode are arranged in the lifting pipe set and used for enhancing the impurity settling effect. The device is reasonable in structure, stable and reliable in pumping process and high in impurity resistance, the service life of a circulating lubrication system is remarkably prolonged, and the operation efficiency of the circulating lubrication system is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of gear processing equipment technology, specifically to a circulating oiling device for gear processing. Background Technology

[0002] During gear machining, to ensure machining accuracy and extend tool life, lubricating oil needs to be continuously sprayed onto the cutting area of ​​the gear teeth for lubrication and cooling. To achieve the recycling of lubricating oil, a circulating oil supply device is often used to pump the recovered oil back to the spraying area. This type of device typically includes an oil reservoir, a booster pump, oil delivery pipes, and spray heads.

[0003] In existing circulating oil supply systems, after oil recovery, it needs to pass through a filtration device to remove impurities and metal shavings before being pumped to the nozzle. However, these filtration devices generally use a screen-type structure, which is prone to clogging due to the accumulation of waste during continuous use. This leads to a decrease in filtration capacity, a reduction in oil flow rate, or even an interruption in flow, requiring frequent manual cleaning of the filter element. This not only increases maintenance costs but also affects the continuity of the processing and the stability of the system.

[0004] Furthermore, most existing oil booster pumps employ gear pumps or vane pump structures, which require a high degree of cleanliness in the oil entering the pump chamber. If the oil contains large particles or metallic impurities, it can easily cause pump jamming, seal failure, or wear of the pump chamber, thus affecting pumping efficiency and service life. To prevent pump damage, a multi-stage filtration system is often added before the pump, further increasing the system load and maintenance workload.

[0005] In view of this, this paper studies and improves the existing problems, and provides a circulating oiling device for gear processing to solve the current problems. The aim of this technology is to solve the problems and improve the practical value. Utility Model Content

[0006] This invention provides a circulating oiling device for gear processing, aiming to solve the technical problems in the prior art, such as unstable operation and frequent maintenance of the lubrication system caused by easy clogging of the filter structure and the inability of the pumping mechanism to tolerate impurities. The device has the advantages of reasonable structure, stable pumping, strong resistance to impurities, and high purification efficiency, and is suitable for circulating lubricating oil containing waste residue and impurities in gear processing scenarios.

[0007] Therefore, the technical solution adopted by this utility model is as follows: a circulating oiling device for gear processing, comprising: an oil pan, a lifting pump group, a lifting pipe group, and a spray nozzle. The lifting pump group is fixedly installed at the bottom end of the oil pan, and its output end is connected to a dust collection box located at the bottom end of the lifting pipe group. Several settling baffles are provided on the inner side of the lifting pipe group. The lifting pump group includes a fixed plate box, a drive motor, a turntable, and several pistons. An eccentrically arranged fixed ring seat is fixed to the inner side of the fixed plate box. The turntable is rotatably installed inside the fixed plate box, and multiple piston cylinders are provided on the turntable. The pistons are slidably sleeved within the piston cylinders, and one end of each piston is connected to a sliding pin, which is slidably sleeved within the annular groove of the fixed ring seat. The upper and lower surfaces of the fixed plate box are respectively provided with an oil inlet and an oil outlet communicating with the oil pan and the dust collection box. The drive motor is fixed to the side of the fixed plate box and is used to drive the turntable to rotate, thereby realizing the pumping function. This technical solution achieves volume change of the piston within the cylinder through linkage between the eccentric ring and the rotary table, completing the oil suction and discharge actions, and possesses good pumping stability and adaptability to impurities in the oil.

[0008] In one possible implementation, a metal filter screen is embedded inside the oil pan, and a permanent magnet block is fixedly installed at the bottom of the metal filter screen. The permanent magnet block is used to magnetically separate ferromagnetic waste residue. This structural design allows the oil entering the oil outlet to undergo preliminary purification treatment before entering the pump body, reducing the risk of large particulate impurities entering the pump chamber and improving the reliability of the device operation. The metal filter screen embedded inside the oil pan, with a permanent magnet block fixedly attached to the bottom surface of the metal filter screen, is used for filtering the oil entering the oil outlet.

[0009] In one possible implementation, the fixed ring seat is an annular structure with an annular groove on its inner side to guide the sliding pin. The center of the fixed ring seat is offset from the central axis of the fixed disc box and is located near the oil outlet end. This structural design allows the piston to reciprocate within the piston cylinder while rotating with the disc. A negative pressure is created near the oil inlet to draw in oil, and the oil is expelled when rotating to the oil outlet, thus completing the oil suction and discharge process during rotation. This technical solution effectively avoids the high cleanliness requirements of traditional vane pumps and gear pumps, improving the pumping system's resistance to impurities. The fixed ring seat is annular, with an annular groove on its inner side to guide the sliding pin. The center of the fixed ring seat is offset from the axis of the fixed disc box and is located near the oil outlet end.

[0010] In one possible implementation, a piston ring is provided on the outer periphery of the piston, and a sliding seal structure is formed between the piston ring and the inner wall of the piston cylinder, thereby ensuring pressure stability and volumetric efficiency during the pumping process, which helps to improve pumping power and system efficiency.

[0011] In one possible implementation, the riser assembly is arranged vertically, and the internal settling baffle is a filter screen structure installed at an angle. This structure can guide residual impurities to settle with gravity as the oil rises, further purifying the oil and extending the service life of the spray device.

[0012] In one possible implementation, several settling baffles are arranged in an alternating pattern on both sides of the inner wall of the riser assembly. This arrangement enhances the disturbance effect of the oil during the rising process, improves the settling efficiency, and allows more impurities to be intercepted in the riser assembly.

[0013] In one possible implementation, the dust collection box is equipped with a permanent magnet block to adsorb and recover metal slag that has not been completely settled in the oil, thereby further purifying the oil, ensuring that the oil output from the spray nozzle is clean, and reducing nozzle clogging.

[0014] In summary, this utility model achieves multi-stage waste removal by integrating a metal filter screen and a magnetic suction structure, and adopts a novel pumping mechanism to achieve a volumetric pumping process with strong impurity adaptability. It can effectively improve the continuous operation capability and stability of the lubrication system, and is particularly suitable for gear processing applications with heavy load and high efficiency requirements.

[0015] The beneficial effects achieved by this utility model are as follows:

[0016] 1. In this utility model, by setting up a vertically arranged lifting pipe assembly and the permanent magnet block structure in the dust collection box and oil pan inside it, the gravity sedimentation and magnetic separation and collection of waste residue can be effectively realized during the oil circulation process, replacing the traditional method of relying on filter screen filtration, significantly reducing the risk of filter screen clogging, and improving the continuous and stable operation capability and maintenance convenience of the system.

[0017] 2. The unique design of the booster pump unit in this utility model utilizes the periodic change of the internal volume of the turntable and piston cylinder to achieve the intake and discharge of oil, thereby completing the pumping function. This avoids the failure problems caused by impurities or wear in traditional gear pumps or vane pumps, thus improving the reliability and service life of the booster system when handling oil containing waste residue. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of the booster pump unit according to one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a turntable according to an embodiment of the present invention;

[0021] Figure 4This is a schematic diagram of the internal structure of the riser assembly according to an embodiment of the present invention.

[0022] Figure label:

[0023] 100. Oil pan;

[0024] 200. Booster pump unit; 210. Fixed plate box; 220. Drive motor; 230. Turntable; 240. Fixed ring seat; 250. Piston; 211. Oil inlet; 212. Oil outlet; 231. Piston cylinder; 251. Sliding pin;

[0025] 300. Lifting pipe assembly; 310. Dust collection box; 320. Settling baffle;

[0026] 400. Spray pipe head. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a circulating oiling device for gear processing.

[0030] Combination Figures 1-4 As shown, the present invention provides a circulating oiling device for gear processing, comprising: an oil pan 100, a lift pump assembly 200, a lift pipe assembly 300, and a spray nozzle 400. The lift pump assembly 200 is fixedly installed at the bottom end of the oil pan 100, and the output end of the lift pump assembly 200 is connected to a dust collection box 310 located at the bottom end of the lift pipe assembly 300.

[0031] The riser assembly 300 is arranged vertically and contains multiple settling baffles 320. The settling baffles 320 are installed at an angle on the inner wall of the riser assembly 300 and are arranged in a staggered manner on the left and right sides to guide impurities in the oil to settle into the dust collection box 310 below. The settling baffles 320 have a filter plate structure, which facilitates the passage of oil while blocking solid waste.

[0032] The spray nozzle 400 is installed at the top of the riser assembly 300 to spray the upward-flowing lubricating oil back onto the gear machining area, thereby achieving the lubrication and cooling function.

[0033] The booster pump assembly 200 includes a fixed plate box 210, a drive motor 220, a rotary table 230, and multiple pistons 250. A fixed ring seat 240 is fixedly installed inside the fixed plate box 210. The fixed ring seat 240 has a circular ring structure, with its center offset from the central axis of the fixed plate box 210 and located near the oil outlet 212. An annular groove is formed on the inner side of the fixed ring seat 240 to guide the sliding pin 251 along its path. The fixed ring seat 240 is circular, and its inner side has an annular groove for guiding the sliding pin 251. The center of the fixed ring seat 240 is offset from the axis of the fixed plate box 210 and located near the oil outlet 212.

[0034] The turntable 230 is rotatably mounted inside the fixed plate box 210, and multiple piston cylinders 231 are arranged around the circumference of the turntable 230. A piston 250 is slidably mounted inside each piston cylinder 231, and a piston ring is fitted around the outer circumference of the piston 250, which slides and seals against the inner wall of the piston cylinder 231. One end of each piston 250 is connected to a sliding pin 251, which is slidably embedded in the annular groove of the fixed ring seat 240.

[0035] Driven by the drive motor 220, the turntable 230 rotates around the central axis of the fixed plate box 210, while the sliding pin 251 slides in the eccentric annular groove of the fixed ring seat 240, guiding the piston 250 to reciprocate within the piston cylinder 231. This structure allows the piston cylinder 231 to increase its internal volume and create negative pressure to draw in oil when it approaches the oil inlet 211 during rotation, and to decrease its volume and force the oil out when it reaches the oil outlet 212, thus realizing the oil pumping process.

[0036] The upper surface of the fixed plate box 210 is provided with an oil inlet 211, which is connected to the oil pan 100; the lower surface is provided with an oil outlet 212, which is connected to the dust collection box 310.

[0037] During operation, the oil first flows into the oil pan 100. A metal filter screen is embedded inside the oil pan 100 for primary filtration of larger particles in the returning oil. A permanent magnet is fixedly mounted on the bottom surface of the metal filter screen to adsorb ferromagnetic waste residue in the oil, improving filtration efficiency and reducing impurities entering the pump unit. The metal filter screen, with a permanent magnet fixedly attached to its bottom surface, is used for filtration of the oil entering the oil outlet 212.

[0038] After entering the fixed plate box 210 through the oil inlet 211, the oil is pumped by the volume change of the piston 250 in the rotary plate 230 and piston cylinder 231, and output from the oil outlet 212 to the dust collection box 310. In the dust collection box 310, heavier particles in the oil settle naturally and are attracted and collected by the permanent magnet at the bottom, preventing them from entering the upper system.

[0039] Subsequently, the oil is lifted into the vertically arranged riser assembly 300, where it undergoes further solid-liquid separation under the action of multiple sets of staggered settling baffles 320. After multi-stage purification, the oil is sprayed out from the spray nozzle 400 at the top of the riser assembly 300, achieving re-lubrication of the gear machining area and forming a complete oil circulation system.

[0040] In summary, the structure and working principle of this utility model ensure the efficient and stable circulation of lubricating oil during processing, reducing the risk of downtime caused by filter blockage or pump failure, and is particularly suitable for oil circulation systems containing metal waste.

[0041] Working principle and usage process of this utility model:

[0042] This invention collects lubricating oil flowing down during gear machining via an oil pan 100. This oil typically contains metal slag and impurities. Before entering the booster pump unit 200, the oil undergoes preliminary filtration through a metal filter screen located at the bottom of the oil pan 100. Furthermore, a permanent magnet block positioned below the metal filter screen adsorbs ferromagnetic particles, thereby reducing the risk of blockage in subsequent structures.

[0043] The pre-purified oil is pumped to the dust collection box 310 by a booster pump unit 200 located at the bottom of the oil pan 100. This pump unit employs a novel volumetric variable structure: a turntable 230 rotates around the inner wall of a fixed plate box 210 under the drive of a drive motor 220. During rotation, multiple pistons 250 on the turntable 230 slide reciprocally within the piston cylinder 231 under the guidance of a fixed ring seat 240, forming a dynamic cycle of oil suction and discharge. Specifically, when the piston cylinder 231 rotates to the oil inlet 211 position and its internal volume increases, oil is drawn in; as it continues to rotate to the oil outlet 212 position and its volume decreases, the oil is forced out to the dust collection box 310.

[0044] After the oil enters the riser assembly 300, it is transported from bottom to top within the vertically arranged riser pipes, while simultaneously flowing through inclined settling baffles 320 inside. Multiple settling baffles 320 are staggered on both sides of the inner wall of the riser assembly 300, which can effectively guide residual waste in the oil to settle to the bottom of the dust collection box 310, where it is further magnetically absorbed and collected by the built-in permanent magnet blocks.

[0045] Finally, the purified oil is delivered to the top spray nozzle 400 and evenly sprayed onto the gear processing area to achieve lubrication and cooling functions, completing the entire oiling cycle.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A circulating oiling device for gear machining, characterized in that, include: The system comprises an oil pan (100), a booster pump assembly (200), a booster pipe assembly (300), and a spray nozzle (400). The booster pump assembly (200) is fixed to the bottom of the oil pan (100), and the output end of the booster pump assembly (200) is connected to a dust collection box (310) located at the bottom of the booster pipe assembly (300). The inner side of the booster pipe assembly (300) is provided with several settling baffles (320). The booster pump assembly (200) includes a fixed plate box (210), a drive motor (220), a turntable (230), and several pistons (250). The inner side of the fixed plate box (210) is fixedly installed with a fixed ring seat (240) offset from the center of the fixed plate box (210). The turntable (230) is fixed to the bottom of the oil pan (100), and the output end of the booster pump assembly (200) is connected to a dust collection box (310) located at the bottom of the booster pipe assembly (300). 30) Rotatably mounted on the inner side of the fixed plate box (210), and the inner side of the turntable (230) is provided with a plurality of piston cylinders (231). The piston (250) is slidably sleeved on the inner side of the piston cylinder (231). One end of the piston (250) is connected to a sliding pin (251). The sliding pin (251) is slidably sleeved on the inner side of the fixed ring seat (240). The upper and lower surfaces of the fixed plate box (210) are respectively provided with an oil inlet (211) and an oil outlet (212) communicating with the oil pan (100) and the dust collection box (310). The drive motor (220) is fixed on one side of the fixed plate box (210) and is used to drive the turntable (230) to rotate.

2. The circulating oiling device for gear processing according to claim 1, characterized in that, A metal filter screen is embedded inside the oil pan (100), and a permanent magnet block is fixedly attached to the bottom surface of the metal filter screen. The metal filter screen is used for filtering the oil entering the oil outlet (212).

3. The circulating oiling device for gear processing according to claim 1, characterized in that, The fixed ring seat (240) is circular in shape, and an annular groove is provided on its inner side to guide the sliding pin (251) to slide. The center of the fixed ring seat (240) is offset from the axis of the fixed plate box (210) and close to one end of the oil outlet (212).

4. The circulating oiling device for gear processing according to claim 1, characterized in that, The piston (250) is provided with a piston ring on its outer periphery, and the outer periphery of the piston ring slides against the inner side of the piston cylinder (231).

5. The circulating oiling device for gear processing according to claim 1, characterized in that, The lifting pipe assembly (300) is arranged vertically, and the settling baffle (320) is arranged at an inclination on the inner side of the lifting pipe assembly (300). The settling baffle (320) is a filter screen structure.

6. The circulating oiling device for gear processing according to claim 1, characterized in that, Several of the aforementioned settling baffles (320) are arranged in an alternating manner on both sides of the inner wall of the lifting pipe assembly (300).

7. The circulating oiling device for gear machining according to claim 1, characterized in that, The dust collection box (310) is equipped with a permanent magnet block inside, which is used for magnetic absorption collection of processed waste residue.

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