Piston type compressor with crosshead provided with oil stopping structure

Abstract

The utility model discloses a piston type compressor with an oil stopping structure on a crosshead, which comprises the crosshead arranged at the right end of a piston rod, the surface of the piston rod is connected with oil wiper filler in a sliding manner, the surface of the piston rod is connected with a telescopic rubber cover in a sliding manner, and the front side and the rear side of the telescopic rubber cover are fixedly connected with perforated plates. The side, opposite to the oil wiper filler, of the cross head is fixedly connected with a fixing disc through a bolt, the side, opposite to the fixing disc, of the perforated disc is provided with a concave disc in a welded mode, and the side, opposite to the perforated disc, of the fixing disc is provided with a convex disc in a welded mode. The telescopic rubber cover is fixedly connected with the cross head and the oil wiper filler, so that the cover rings on the surfaces of the concave-surface disc and the convex-surface disc are fixed, the concave-surface disc and the convex-surface disc are fixed, the telescopic rubber cover is fixedly connected with the cross head and the oil wiper filler, and the purpose of improving the oil blocking effect between the cross head and the oil wiper filler under partial conditions can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of piston compressor technology, and in particular relates to a piston compressor with an oil-blocking structure on the crosshead. Background Technology

[0002] During compressor operation, it is necessary to prevent oil from entering the piston crosshead. This is directly related to whether the compressor can operate safely, stably, and efficiently. The compressor cylinder usually requires pure process gas. If lubricating oil enters the cylinder along the piston rod, it will contaminate the process gas and affect product quality.

[0003] To improve the oil-blocking effect between the crosshead and the scraper packing under certain conditions, a piston compressor with an oil-blocking structure on the crosshead was designed. This device, by adding a telescopic rubber cover between the crosshead and the scraper packing, can ensure a sealing effect between the crosshead and the scraper packing during normal operation. At the same time, the multiple cooperation of the perforated plate, fixed plate, concave plate and convex plate can prevent the telescopic rubber cover from detaching, thus improving the oil-blocking effect between the crosshead and the scraper packing under certain conditions. Utility Model Content

[0004] The purpose of this invention is to provide a piston compressor with an oil-blocking structure on the crosshead, which improves the oil-blocking effect between the crosshead and the scraper packing under certain conditions, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A piston compressor with an oil-blocking structure on the crosshead, comprising a crosshead installed at the right end of the piston rod; an oil scraper packing is slidably connected to the surface of the piston rod, and a telescopic rubber cover is slidably connected to the surface of the piston rod; perforated discs are fixedly connected to both the front and rear sides of the telescopic rubber cover; a fixed disc is bolted to the side of the crosshead and the oil scraper packing opposite to each other; a concave disc is welded to the side of the perforated disc opposite to the fixed disc; and a concave disc is welded to the side of the fixed disc opposite to the perforated disc. A convex disc is welded to the surface of a concave disc, the surface of which is slidably connected to the inner cavity of a concave disc. A convex rubber sleeve is slidably connected to the surface of the piston rod. A Z-shaped tube is welded to the inner cavity of the concave disc, and a thickened tube is welded to the inner cavity of the convex disc. The convex rubber sleeve is located between the Z-shaped tube and the thickened tube. An opening ring is welded to the surface of both the concave and convex discs. A cover ring is slidably connected to the surface of both the concave and convex discs. A threaded hole is provided between the two cover rings. A bolt is threaded into the inner cavity of the threaded hole, and a nut is threaded into the surface of the bolt.

[0006] Preferably, both the concave and convex disks are slidably connected to a rubber pad, which is located between the opening ring and the cover ring.

[0007] Preferably, a deepening groove is provided at one end of the concave disk opposite to the convex disk, and a rubber ring is fitted inside the cavity of the deepening groove.

[0008] Preferably, a groove is formed at one end of the convex disk opposite to the concave disk, and a rubber ring is fitted inside the groove.

[0009] Preferably, the piston rod is slidably connected to an intermediate packing, which is located to the left of the oil scraper packing.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model fixes the cover rings on the concave and convex surfaces of the disc by tightening the bolts and nuts, and fixes the concave and convex discs, thereby fixing the telescopic rubber cover to the crosshead and the scraper packing. Under certain conditions, this can improve the oil blocking effect between the crosshead and the scraper packing.

[0012] 2. By setting a rubber pad, this utility model can achieve a sealing effect between the cover ring and the opening ring. At the same time, due to the material of the rubber pad itself, the cover ring and the opening ring can obtain a supporting force opposite to the bolt tightening direction, which can make the connection between the concave plate and the convex plate more stable.

[0013] 3. By using rubber ring one and rubber ring two together, this utility model can achieve a better sealing effect between the concave and convex discs, and can prevent lubricating oil from leaking into the inner cavity of the concave or convex discs. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a left-side view of one embodiment of the present invention;

[0016] Figure 2 This is a front view schematic diagram of one embodiment of the present utility model;

[0017] Figure 3 This is a front view schematic diagram of one embodiment of the present utility model;

[0018] Figure 4 This is a cross-sectional split diagram of the concave disk and the convex disk according to an embodiment of the present invention;

[0019] Figure 5 This is one embodiment of the present utility model. Figure 2 A magnified view of point A in the middle;

[0020] Figure 6 This is one embodiment of the present utility model. Figure 3A magnified view of point B in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Piston rod, 2. Crosshead, 3. Scraper packing, 4. Telescopic rubber cover, 5. Perforated plate, 6. Fixed plate, 7. Concave plate, 8. Convex plate, 9. Convex rubber sleeve, 10. Z-shaped tube, 11. Thickened tube, 12. Perforated ring, 13. Cover ring, 14. Bolt, 15. Nut, 16. Rubber gasket, 17. Deepened groove, 18. Rubber ring one, 19. Groove, 20. Rubber ring two, 21. Intermediate packing. Detailed Implementation

[0023] In the following description, embodiments of the piston compressor with an oil-blocking structure on the crosshead of the present invention will be described with reference to the accompanying drawings. Example 1

[0024] Figure 1-6 This invention illustrates a piston compressor with an oil-blocking structure on the crosshead according to an embodiment of the present invention. The compressor includes: a crosshead 2 mounted on the right end of a piston rod 1; an oil scraper packing 3 slidably connected to the surface of the piston rod 1; a telescopic rubber cover 4 slidably connected to the surface of the piston rod 1; perforated discs 5 fixedly connected to both the front and rear sides of the telescopic rubber cover 4; fixed discs 6 bolted to the opposite sides of the crosshead 2 and the oil scraper packing 3; a concave disc 7 welded to the side of the perforated disc 5 opposite to the fixed disc 6; a convex disc 8 welded to the side of the fixed disc 6 opposite to the perforated disc 5; the surface of the convex disc 8 slidably connected to the inner cavity of the concave disc 7; a convex rubber sleeve 9 slidably connected to the surface of the piston rod 1; a Z-shaped tube 10 welded to the inner cavity of the concave disc 7; a thickened tube 11 welded to the inner cavity of the convex disc 8; and the convex rubber sleeve 9 located on the Z-shaped tube 10. Between the concave plate 7 and the thickened tube 11, the surfaces of both the concave plate 7 and the convex plate 8 are welded with perforated rings 12. The surfaces of both the concave plate 7 and the convex plate 8 are slidably connected with cover rings 13. A screw hole is opened between the two cover rings 13. A bolt 14 is threaded into the inner cavity of the screw hole. A nut 15 is threaded into the surface of the bolt 14. A rubber pad 16 is slidably connected to the surfaces of both the concave plate 7 and the convex plate 8. The rubber pad 16 can achieve a sealing effect between the cover ring 13 and the perforated ring 12. At the same time, due to the material of the rubber pad 16, the cover ring 13 and the perforated ring 12 can obtain a supporting force opposite to the turning direction of the bolt 14, which can make the connection between the concave plate 7 and the convex plate 8 more stable. The rubber pad 16 is located between the perforated ring 12 and the cover ring 13. A groove 19 is opened at the end of the convex plate 8 opposite to the concave plate 7. Example 2

[0025] Figure 1-6This invention illustrates a piston compressor with an oil-blocking structure on the crosshead according to an embodiment of the present invention. The compressor includes: a crosshead 2 mounted on the right end of a piston rod 1; an oil scraper packing 3 slidably connected to the surface of the piston rod 1; a telescopic rubber cover 4 slidably connected to the surface of the piston rod 1; perforated discs 5 fixedly connected to both the front and rear sides of the telescopic rubber cover 4; fixed discs 6 bolted to the opposite sides of the crosshead 2 and the oil scraper packing 3; a concave disc 7 welded to the side of the perforated disc 5 opposite to the fixed disc 6; a convex disc 8 welded to the side of the fixed disc 6 opposite to the perforated disc 5; the surface of the convex disc 8 slidably connected to the inner cavity of the concave disc 7; a convex rubber sleeve 9 slidably connected to the surface of the piston rod 1; a Z-shaped tube 10 welded to the inner cavity of the concave disc 7; a thickened tube 11 welded to the inner cavity of the convex disc 8; and the convex rubber sleeve 9 located on the Z-shaped tube 10. Between the concave plate 7 and the thickened tube 11, the surfaces of both the concave plate 7 and the convex plate 8 are welded with perforated rings 12. The surfaces of both the concave plate 7 and the convex plate 8 are slidably connected with cover rings 13. A screw hole is opened between the two cover rings 13. A bolt 14 is threaded into the inner cavity of the screw hole. A nut 15 is threaded into the surface of the bolt 14. A deep groove 17 is opened at the opposite end of the concave plate 7 and the convex plate 8. A rubber ring 18 is fitted inside the deep groove 17. An intermediate packing 21 is slidably connected to the surface of the piston rod 1. The intermediate packing 21 is located on the left side of the oil scraper packing 3. A rubber ring 20 is fitted inside the groove 19. Through the cooperation of the rubber ring 18 and the rubber ring 20, a better sealing effect can be achieved between the concave plate 7 and the convex plate 8, which can prevent lubricating oil from leaking into the inner cavity of the concave plate 7 or the convex plate 8.

[0026] Working principle: When using this utility model, the user first places the convex rubber sleeve 9 on the surface of the piston rod 1, then uses bolts to fix the concave plate 7 and the perforated plate 5 to the left and right sides of the telescopic rubber cover 4. Next, the fixing plate 6 and the convex plate 8 are fixedly connected to the crosshead 2 and the scraper filler 3 respectively. Then, the concave plate 7 is pulled to slide on the surface of the piston rod 1, causing the telescopic rubber cover 4 to extend, so that the inner cavity of the concave plate 7 fits onto the convex surface of the convex plate 8. The convex rubber sleeve 9 is positioned between the Z-shaped tube 10 and the thickened tube 11, thereby achieving an oil-blocking effect between the inner cavity and the surface of the piston rod 1. Then, the bolt 14 and nut 15 are tightened to fix the cover ring 13 on the surface of the concave plate 7 and the convex plate 8, and to fix the concave plate 7 and the convex plate 8. This allows the telescopic rubber cover 4 to be fixedly connected to the crosshead 2 and the oil scraper packing 3, thereby improving the oil-blocking effect between the crosshead 2 and the oil scraper packing 3 under certain conditions.

[0027] In summary, this piston compressor with an oil-blocking structure on the crosshead, by tightening the bolts 14 and the nuts 15, fixes the cover ring 13 on the surface of the concave disk 7 and the convex disk 8, and fixes the concave disk 7 and the convex disk 8, thereby fixing the telescopic rubber cover 4 to both the crosshead 2 and the oil scraper packing 3. This achieves the purpose of improving the oil-blocking effect between the crosshead 2 and the oil scraper packing 3 under certain conditions.

Claims

1. A piston compressor with an oil-blocking structure on a crosshead, characterized in that, Includes a crosshead (2) installed at the right end of the piston rod (1): a scraper packing (3) is slidably connected to the surface of the piston rod (1), a telescopic rubber cover (4) is slidably connected to the surface of the piston rod (1), and perforated discs (5) are fixedly connected to both the front and rear sides of the telescopic rubber cover (4). A fixed disc (6) is fixedly connected to the opposite side of the crosshead (2) and the scraper packing (3) by bolts. A concave disc (7) is welded to the side of the perforated disc (5) opposite to the fixed disc (6), and a convex disc (8) is welded to the side of the fixed disc (6) opposite to the perforated disc (5). The surface of the convex disc (8) is slidably connected to the inner surface of the concave disc (7). The piston rod (1) is slidably connected to a convex rubber sleeve (9), the concave disk (7) is welded with a Z-shaped tube (10), the convex disk (8) is welded with a thickened tube (11), the convex rubber sleeve (9) is located between the Z-shaped tube (10) and the thickened tube (11), the concave disk (7) and the convex disk (8) are both welded with perforated rings (12), the concave disk (7) and the convex disk (8) are both slidably connected with cover rings (13), and a screw hole is opened between the two cover rings (13). The screw hole is threaded with a bolt (14), and the bolt (14) is threaded with a nut (15).

2. A piston compressor with an oil-blocking structure on a crosshead according to claim 1, characterized in that, Both the concave disk (7) and the convex disk (8) are slidably connected with rubber pads (16), which are located between the perforated ring (12) and the cover ring (13).

3. A piston compressor with an oil-blocking structure on a crosshead according to claim 2, characterized in that, A deep groove (17) is provided at one end of the concave disk (7) opposite to the convex disk (8), and a rubber ring (18) is fitted inside the deep groove (17).

4. A piston compressor with an oil-blocking structure on a crosshead according to claim 3, characterized in that, A groove (19) is provided at one end of the convex disk (8) opposite to the concave disk (7), and a rubber ring (20) is fitted inside the groove (19).

5. A piston compressor with an oil-blocking structure on a crosshead according to claim 4, characterized in that, The piston rod (1) is slidably connected to an intermediate packing (21), which is located to the left of the scraper packing (3).

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