Search

CN-224229237-U - Four-petal oil retainer easy to attach

CN224229237UCN 224229237 UCN224229237 UCN 224229237UCN-224229237-U

Abstract

The utility model discloses an easily-attached four-flap oil retainer, which comprises oil scraping pieces and spring rings, wherein the spring rings used for fixing the oil scraping pieces are sleeved on the outer sides of the oil scraping pieces, four groups of oil scraping pieces are connected end to form an annular oil scraping ring, the oil scraping rings are provided with oil return channels distributed in a circumferential mode, the oil scraping pieces are provided with chamfer surfaces, and the chamfer surfaces of the four groups of oil scraping pieces are combined to form a virtual square.

Inventors

  • Zheng Keai
  • ZHENG YUANCAI
  • WU JIAFU
  • ZHU ENWEI
  • ZHENG KEKE

Assignees

  • 温州东一机械制造有限公司

Dates

Publication Date
20260512
Application Date
20260409

Claims (8)

  1. 1. Four lamella oil retainer of easy laminating, its characterized in that, including scraping oily spare (1) and spring ring (2), the spring ring (2) that are used for fixed scraping oily spare (1) have been cup jointed in the oil scraping oily spare (1) outside, and four groups of oil scraping oily spare (1) end to end become annular oil scraping ring (3), and oil scraping ring (3) are equipped with oil return channel (4) that are circumference and distribute, oil scraping oily spare (1) are equipped with chamfer (10), and chamfer (10) combination formation virtual square (5) of four groups of oil scraping oily spare (1).
  2. 2. The four-lobe oil retainer easy to attach according to claim 1, wherein the oil return channel (4) comprises an oil return hole (11) and an oil guide hole (12) which are arranged on the oil scraping piece (1), and the inner side of the oil scraping piece (1) is communicated with the outer side of the oil guide hole (12) through the oil return hole (11).
  3. 3. The four-lobe oil retainer easy to attach as claimed in claim 2, wherein the inner side of the oil scraping piece (1) is provided with a first oil scraping part (13) and a second oil scraping part (14), and an oil guiding groove (15) arranged between the first oil scraping part (13) and the second oil scraping part (14), and the oil return hole (11) is communicated with the oil guiding groove (15).
  4. 4. The four-lobe oil retainer easy to attach, as claimed in claim 3, is characterized in that oil return holes (11) are radially distributed in the oil retainer (3), and oil guide holes (12) are vertically distributed in the oil return holes (11).
  5. 5. The four-lobe oil retainer easy to attach according to claim 3, wherein the oil guiding groove (15) is obliquely distributed from inside to outside in a direction toward the second oil scraping part (14).
  6. 6. The four-lobe oil retainer easy to attach as claimed in claim 2, wherein the oil return hole (11) is a strip hole.
  7. 7. The four-flap oil retainer easy to attach according to claim 3, wherein a countersunk groove (16) is formed in one side of the first oil scraping part (13) of the oil scraping part (1), and an oil guiding inclined plane (17) communicated with the countersunk groove (16).
  8. 8. The four-flap oil retainer easy to attach as claimed in claim 7, wherein the oil scraping piece (1) is provided with a semicircular groove (18) for sleeving the spring ring (2), and the countersunk groove (16) is connected with the semicircular groove (18) through an oil guiding inclined plane (17).

Description

Four-petal oil retainer easy to attach Technical Field The utility model relates to the technical field of oil slingers, in particular to an easily-attached four-petal oil slinger. Background The oil scraper ring is a common oil scraper in rotating machinery such as an internal combustion engine, a compressor and the like, is usually arranged on a piston shaft, the traditional oil scraper ring adopts a three-flap structure, for example, the patent number is CN202223396902.0, and discloses a low-abrasion oil scraper ring group which is formed by connecting three oil scrapers end to end, and the outer side is sleeved with a spring ring to provide radial tightening force, so that the inner side of the oil scraper is attached to the shaft surface to realize the oil scraping function. Disclosure of utility model In order to overcome the defects of the background technology, the technical scheme is that the easily-attached four-flap oil retainer comprises an oil scraping piece and a spring ring, the spring ring for fixing the oil scraping piece is sleeved on the outer side of the oil scraping piece, four groups of oil scraping pieces are connected end to form an annular oil scraping ring, the oil scraping ring is provided with oil return channels distributed in a circumferential mode, the oil scraping pieces are provided with chamfer faces, and the chamfer faces of the four groups of oil scraping pieces are combined to form a virtual square. By adopting the technical scheme, the oil retainer adopts the four-lobe structure, compared with the traditional three-lobe structure, the quantity of the oil scraping pieces is increased, the arc length of each oil scraping piece is reduced, the adjustment is more flexible when the oil scraping pieces are installed, the inner sides of the oil scraping pieces are ensured to be more attached to the surface of the piston shaft, the chamfer combination of the oil scraping pieces forms a virtual square structure, the contact area of the adjacent oil scraping pieces is increased, the abrasion allowance is reserved for the oil scraping pieces, when the oil retainer or the piston shaft is slightly abraded, the abraded place is compensated by the mode of oblique angle internal error under the continuous tightening action of the spring ring, so that the thickness of an oil film on the surface of the piston shaft is ensured to be uniform, and the service life of the oil retainer is effectively prolonged. The oil return channel comprises an oil return hole and an oil guide hole which are arranged on the oil scraping piece, and the inner side of the oil scraping piece is communicated with the oil guide hole on the outer side through the oil return hole. Further, the inner side of the oil scraping piece is provided with a first oil scraping part, a second oil scraping part and an oil guide groove arranged between the first oil scraping part and the second oil scraping part, and the oil return hole is communicated with the oil guide groove. Further, oil return holes are radially distributed in the oil scraper ring, and the oil guide holes are vertically distributed in the oil return holes. By adopting the technical scheme, the piston shaft sequentially passes through the first oil scraping part and the second oil scraping part to scrape oil, the scraped oil of the second oil scraping part is accumulated in the oil guide groove, and the oil in the oil guide groove flows to the outer side of the oil scraping part through the oil return hole, so that the phenomenon that the accumulated engine oil in the oil guide groove overflows is avoided. The utility model further provides that the oil guide grooves are obliquely distributed from inside to outside in the direction facing the second oil scraping part. By adopting the technical scheme, the inclined oil guide grooves enable the second oil scraping part to face the direction of engine oil to form a larger attack angle, and the engine oil smoothly flows outwards along the wall surface of the oil guide grooves after being scraped, so that the oil scraping effect is uniform. The utility model further provides that the oil return hole is a strip hole. By adopting the technical scheme, the cross-sectional area of the oil return hole is increased through the strip hole, the oil return amount in unit time is improved, the scraped engine oil can flow out rapidly, and the oil is prevented from accumulating on the inner side of the oil scraper ring. The utility model is further characterized in that one side of the oil scraping piece, which is positioned on the first oil scraping part, is provided with a countersunk head groove and an oil guide inclined plane communicated with the countersunk head groove. Further, the oil scraping piece is provided with a semicircular groove for sleeving the spring ring, and the countersunk groove is connected with the semicircular groove through an oil guiding inclined plane. By adopting the technical scheme, the engin