CN213392564U

CN213392564U - Oil wiper of piston compressor

Info

Publication number: CN213392564U
Application number: CN202022429095.2U
Authority: CN
Inventors: 潘仲高; 张正勇
Original assignee: Chengdu Bolei Chemical Machinery Co ltd
Current assignee: Chengdu Bolei Chemical Machinery Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-08
Anticipated expiration: 2030-10-27

Abstract

The utility model relates to a compressor oil wiper field, aim at provides a piston compressor oil wiper with sealed effectual, difficult oil leak, advantages such as good reliability. The technical scheme is as follows: the utility model provides a piston compressor oil wiper, is including scraping oil box and setting up at the baffle of scraping oil box one end, be equipped with the mechanism of scraping oil in the oil scraping box, the mechanism of scraping oil includes oil scraping component and the seal assembly of coaxial setting, the oil scraping component is located and is close to baffle one side, the seal assembly is including wearing to establish the first space ring in the oil scraping box, be equipped with a plurality of sealing rings in the first space ring, be equipped with the arc chamfer that is used for preventing this sealing ring reverse oil scraping apart from the nearest one of them sealing ring of the oil scraping box other end border department.

Description

Oil wiper of piston compressor

Technical Field

The utility model relates to a compressor oil wiper field, concretely relates to piston compressor oil wiper.

Background

The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and is divided into various compressors such as a reciprocating compressor, a rotary compressor and the like, the reciprocating compressor mainly comprises a piston rod, a crank, a connecting rod mechanism, an air valve, an oil wiper and other accessories, the oil wiper is sleeved on the piston rod, the oil wiper can generate reverse oil wiping phenomenon due to reciprocating motion of the piston rod in the using process, lubricating oil can be accumulated on the piston rod in the long-term using process, and oil leakage phenomenon of the oil wiper can be further caused.

Disclosure of Invention

An object of the utility model is to provide a piston compressor oil wiper, oil wiper are sealed effectual, difficult oil leak, the good reliability.

In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: the utility model provides a piston compressor oil wiper, is including scraping oil box and setting up the baffle in oil scraping box one end, be equipped with the oil scraping mechanism in the oil scraping box, oil scraping mechanism includes oil scraping assembly and the seal assembly of coaxial setting, oil scraping assembly is located and is close to baffle one side, seal assembly is including wearing to establish the first space ring in the oil scraping box, be equipped with a plurality of sealing rings in the first space ring, be equipped with the arc chamfer that is used for preventing this sealing ring reverse oil scraping apart from the inner ring border department of the nearest sealing ring of oil scraping box other end terminal surface.

Preferably, the axial section of the first space ring is L-shaped, a first oil return groove is formed in the side wall of the first space ring along the circumferential direction, and a plurality of first through holes penetrating through the side wall of the first space ring are formed in the first oil return groove; and a first fastening spring is arranged on the side wall of the outer ring of the sealing ring.

Preferably, the oil scraping assembly comprises a second space ring penetrating through the oil scraping box, the axial section of the second space ring is also L-shaped, a second oil return groove is formed in the side wall of the second space ring along the circumferential direction, and a plurality of second through holes penetrating through the side wall of the second space ring are formed in the second oil return groove; and a plurality of oil scraping rings are arranged in the second space ring, and a second fastening spring is arranged on the outer ring side wall of each oil scraping ring.

Preferably, a plurality of arc-shaped bulges are arranged on two ring surfaces of the oil scraper ring, the width of each arc-shaped bulge is smaller than that of the ring surface of the oil scraper ring, the arc-shaped bulges are arranged at equal intervals along the circumferential direction of the oil scraper ring, and a gap between every two adjacent arc-shaped bulges forms a third oil return groove.

Preferably, an oil-blocking ring is arranged on the inner ring wall of one end of the second space ring close to the baffle.

Preferably, a plurality of vent holes are formed in the side wall of the oil scraping box.

Preferably, a fourth oil return groove is formed in the inner wall of the oil scraping box.

The beneficial effects of the utility model are concentrated and are embodied in: the utility model discloses an oil wiper has sealed effectual, difficult oil leak, advantages such as good reliability. Particularly, the oil scraping assembly is arranged in the oil scraping box, the oil scraping efficiency of the oil scraping assembly is high, the oil return speed is high, the sealing assembly arranged in the oil scraping box plays a role in sealing the oil scraping box, and the sealing effect is good; meanwhile, the arc-shaped chamfer arranged on the sealing ring can effectively prevent the sealing ring from generating reverse oil scraping phenomenon in the oil scraping process, and the oil leakage phenomenon is not easy to occur.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the oil scraper of the present invention;

FIG. 2 is an enlarged view of portion A of the structure shown in FIG. 1;

FIG. 3 is an enlarged view of portion B of the structure shown in FIG. 1;

FIG. 4 is a schematic view of the structure of the oil scraping ring of the present invention;

reference numerals: 1. an oil scraping box; 2. a baffle plate; 3. a first space ring; 4. a seal ring; 5. arc chamfering; 6. a first oil return groove; 7. a first through hole; 8. a first fastening spring; 9. a second space ring; 10. a second oil return groove; 11. a second through hole; 12. an oil scraper ring; 13. a second fastening spring; 14. an arc-shaped bulge; 15. a third oil return groove; 16. an oil control ring; 17. a vent hole; 18. a fourth oil return groove; 19. a casing.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, a piston compressor oil wiper comprises an oil wiper box 1 and a baffle 2 arranged at one end of the oil wiper box 1, in this embodiment, the oil wiper is transversely arranged, a piston rod in a compressor is also transversely arranged, the piston rod is arranged in the oil wiper box 1 in a penetrating manner, in fig. 1, the oil wiper further comprises a casing 19 of an oil tank, the oil tank is positioned at the left side (not shown), the section of the casing 19 is zigzag, the axial sections of the oil wiper box 1 and the baffle 2 are both L-shaped, the oil wiper box 1 is arranged on the casing 19 in a penetrating manner, the oil wiper box and the casing 19 are fixedly connected through bolts, and the baffle 2 is also fixedly connected with the end face of the oil wiper box 1 through bolts; an oil scraping mechanism is arranged in the oil scraping box 1, and needs to be explained, when oil is scraped on the piston rod, a thin oil film is usually formed on the piston rod, and the oil film is not completely scraped; the oil scraping mechanism comprises an oil scraping component and a sealing component which are coaxially arranged, the oil scraping component is positioned on one side close to the baffle 2, the oil scraping component mainly plays an oil scraping role in the embodiment, and the sealing component can play a certain auxiliary oil scraping role and also plays a sealing role; the sealing assembly comprises a first space ring 3 which penetrates through the oil scraping box 1 and has an L-shaped axial section, a plurality of sealing rings 4 are arranged in the first space ring 3, in the embodiment, three sealing rings 4 are preferably adopted, an arc chamfer 5 for preventing the sealing ring 4 from reversely scraping oil is arranged at the inner ring edge of one sealing ring 4 closest to the end surface of the other end of the oil scraping box 1, namely the sealing ring 4 close to the outer part of the oil scraper is provided with the arc chamfer 5, and in the process that the piston rod moves rightwards, a thin oil film can exist on the piston rod after passing through the oil scraping assembly; and when the piston rod reset to the left and move, because the arc chamfer 5 that is located on the sealing ring 4 of outside sets up, consequently this sealing ring 4 can not carry out the oil scraping operation on the piston rod in this direction, and the edges and corners department of sealing ring 4 can only carry out the oil scraping operation usually, can prevent the reverse oil scraping of oil wiper, has promoted the reliability of oil wiper, can not appear long-pending oil on the piston rod, can not take place the oil leak phenomenon.

Further, a first oil return groove 6 is formed in the side wall of the first space ring 3 along the circumferential direction, and a plurality of first through holes 7 penetrating through the side wall of the first space ring 3 are formed in the first oil return groove 6; the oil scraper is characterized in that a first fastening spring 8 is arranged on the side wall of an outer ring of the sealing ring 4, the sealing ring 4 is tightly pressed by the first fastening spring 8, a fourth oil return groove 18 is formed in the inner wall of the oil scraping box 1, and oil hung at corners of the three sealing rings 4 enters the fourth oil return groove 18 through the first oil return groove 6 and finally flows back to an oil tank.

Further, the oil scraping assembly comprises a second space ring 9 penetrating through the oil scraping box 1, the axial cross section of the second space ring 9 is also L-shaped, a second oil return groove 10 is formed in the side wall of the second space ring 9 along the circumferential direction, and a plurality of second through holes 11 penetrating through the side wall of the second space ring 9 are formed in the second oil return groove 10; a plurality of oil scraper rings 12 are arranged in the second space ring 9, a second fastening spring 13 is arranged on the outer ring side wall of each oil scraper ring 12, the second fastening spring 13 is also used for fixedly pressing the oil scraper rings 12, in the embodiment, a plurality of arc-shaped protrusions 14 are arranged on two ring surfaces of each oil scraper ring 12, the width of each arc-shaped protrusion 14 is smaller than the ring surface width of each oil scraper ring 12, the arc-shaped protrusions 14 are arranged at equal intervals along the circumferential direction of the oil scraper rings 12, a gap between every two adjacent arc-shaped protrusions 14 forms a third oil return groove 15, and oil scraped by the oil scraper rings 12 enters a fourth oil return groove 18 from the third oil return groove 15 and finally returns to the oil tank; one of the third oil return grooves 15 on one ring surface of the oil scraper ring 12 is located between two adjacent third oil return grooves 15 on the other ring surface of the oil scraper ring 12, namely the third oil return grooves 15 on two sides of the oil scraper ring 12 are staggered, and meanwhile, a double-sided oil scraping structure is formed by adopting four oil scraper rings 12, so that the oil scraping strength can be effectively improved; and secondly, an oil control ring 16 is arranged on the inner ring wall of one end of the second space ring 9 close to the baffle 2, and most of oil on the piston rod is removed by the oil control ring 16, so that the oil scraping strength can be further improved.

Further, owing to scrape oil box 1 and for transversely placing, for the convenience oil return, because be equipped with a plurality of air vents 17 on the lateral wall of scraping oil box 1, the top that is just transversely placing back at scraping oil box 1 sets up air vent 17, guarantees the normal backward flow of oil.

It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the order of acts described, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application.

Claims

1. The utility model provides a piston compressor oil wiper, includes and scrapes oil box (1) and set up baffle (2) of scraping one end of oil box (1), be equipped with oil scraping mechanism, its characterized in that in scraping oil box (1): the oil scraping mechanism comprises an oil scraping assembly and a sealing assembly which are coaxially arranged, the oil scraping assembly is located on one side close to the baffle (2), the sealing assembly comprises a first space ring (3) which is arranged in the oil scraping box (1) in a penetrating mode, a plurality of sealing rings (4) are arranged in the first space ring (3), and an arc-shaped chamfer (5) used for preventing the sealing rings (4) from reversely scraping oil is arranged at the position of the inner ring edge of the sealing ring (4) which is closest to the end face of the other end of the oil scraping box (1).

2. A piston compressor oil wiper as defined in claim 1, wherein: the axial section of the first space ring (3) is L-shaped, a first oil return groove (6) is formed in the side wall of the first space ring (3) along the circumferential direction, and a plurality of first through holes (7) penetrating through the side wall of the first space ring (3) are formed in the first oil return groove (6); and a first fastening spring (8) is arranged on the side wall of the outer ring of the sealing ring (4).

3. A piston compressor oil wiper as defined in claim 1, wherein: the oil scraping assembly comprises a second space ring (9) penetrating through the oil scraping box (1), the axial section of the second space ring (9) is L-shaped, a second oil return groove (10) is formed in the side wall of the second space ring (9) along the circumferential direction, and a plurality of second through holes (11) penetrating through the side wall of the second space ring (9) are formed in the second oil return groove (10); a plurality of oil scraper rings (12) are arranged in the second space ring (9), and a second fastening spring (13) is arranged on the outer ring side wall of each oil scraper ring (12).

4. A piston compressor oil wiper according to claim 3, wherein: all be equipped with a plurality of arc archs (14) on the two anchor rings of scraper ring (12), the width of arc arch (14) is less than the anchor ring width of scraper ring (12), arc arch (14) are along scraper ring (12) circumference equidistant setting, and the clearance between two adjacent arc archs (14) constitutes third oil gallery (15).

5. A piston compressor oil wiper according to claim 3, wherein: an oil control ring (16) is arranged on the inner ring wall of one end of the second space ring (9) close to the baffle (2).

6. A piston compressor oil wiper as defined in claim 1, wherein: the side wall of the oil scraping box (1) is provided with a plurality of vent holes (17).

7. A piston compressor oil wiper as defined in claim 1, wherein: and a fourth oil return groove (18) is formed in the inner wall of the oil scraping box (1).