High-pressure combined sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and discloses a high-pressure combined sealing ring which comprises a combined sealing ring body used for sealing a rotating shaft and a shaft sleeve. The combined sealing ring body comprises a first sealing outer ring, a second sealing outer ring, a first sealing inner ring and a second sealing inner ring which are located between the rotating shaft and the shaft sleeve, and a connecting unit capable of being sealed is arranged between the first pressing ring and the second pressing ring. The connecting unit is used for connecting the first pressing ring and the second pressing ring and can adjust the distance between the first pressing ring and the second pressing ring. According to the combined sealing ring, the service life of the combined sealing ring body is prolonged, the replacement frequency of the combined sealing ring body is reduced, the first pressing ring and the second pressing ring can be recycled, and the replacement cost of the combined sealing ring body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a high-pressure combined sealing ring. Background Art

[0002] The sealing ring, also known as the O-ring, is an accessory used for sealing. It mainly includes V-ring, U-ring, O-ring, rectangular ring, Y-ring, YX-ring for hole, YX-ring for hole, YX-ring for shaft, YX-ring for shaft, etc.

[0003] In order to improve the sealing performance of the sealing ring, the prior art has made many improvements to the sealing ring, such as the patent with the patent publication number CN219673272U, which discloses a high-pressure combined sealing ring, including a first combined structure and a second combined structure, the first combined structure and the second combined structure are symmetrically arranged, and the center of the first combined structure and the second combined structure is connected with a mounting support structure, the first combined structure and the second combined structure are sealed and clamped with the mounting support structure, the first combined structure and the second combined structure can perform sealing treatment at the side position to form a barrier function, the mounting support structure performs a combined connection of the first combined structure and the second combined structure, and the mounting support structure can cooperate with the first combined structure and the second combined structure to perform multi-stage sealing treatment. This utility model is a high-pressure combined sealing ring, which achieves the purpose of combined sealing through the arrangement of the first combined structure and the second combined structure.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] The above-mentioned comparative document improves the sealing effect of the sealing ring by combining the upper and lower parts, but in actual operation, the sealing ring is also used between the rotating shaft and the sleeve. Due to the long-term rotation of the rotating shaft, the sealing ring will be worn. When the sealing of the sealing ring is worn below the sealing threshold, the sealing effect will deteriorate and the sealing ring needs to be replaced. In fact, the sealing ring is still intact, but the worn sealing ring is not suitable for the size of the rotating shaft and the sleeve, so the sealing ring needs to be replaced frequently. Therefore, this field urgently needs to improve the high-pressure combination sealing ring to solve the defects of the prior art. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a high-pressure combined sealing ring, which reduces the number of times the combined sealing ring body is replaced, and the first clamping ring and the second clamping ring can be repeatedly recycled, reducing the cost of replacing the combined sealing ring body.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure combined sealing ring, comprising a combined sealing ring body, the combined sealing ring body is used to seal between a rotating shaft and a sleeve, the combined sealing ring body comprises a first sealing outer ring, a second sealing outer ring, a first sealing inner ring and a second sealing inner ring located between the rotating shaft and the sleeve, one side of the first sealing outer ring and the second sealing outer ring are both against the inner side wall of the sleeve, one side of the first sealing inner ring and the second sealing inner ring are both against the side of the rotating shaft, the first sealing inner ring and the first sealing outer ring facing side surfaces, the second sealing outer ring and the second sealing inner ring facing side surfaces are both provided with symmetrical extrusion bevels, a first clamping ring is provided between the first sealing outer ring and the first sealing inner ring, a second clamping ring is provided between the second sealing outer ring and the second sealing inner ring, a sealing connection unit is provided between the first clamping ring and the second clamping ring, the connection unit is used to connect the first clamping ring and the second clamping ring and can adjust the distance between the first clamping ring and the second clamping ring.

[0008] Preferably, the connection unit comprises a plurality of clamping bolts with one end passing through the first clamping ring, and the second clamping ring is provided with threaded holes adapted to the clamping bolts.

[0009] Preferably, a side of the second clamping ring close to the first clamping ring is fixedly connected to a limiting ring, and a side of the first clamping ring close to the second clamping ring is provided with a limiting groove adapted to the limiting ring.

[0010] Preferably, the first clamping ring and the second clamping ring are both provided with open grooves on their opposite sides, and the connecting unit is located in the open grooves.

[0011] Preferably, rubber pads are provided in the two opening grooves, and the side surface of the rubber pad in the opening groove on the first clamping ring abuts against one end of the clamping bolt.

[0012] Preferably, a plurality of limiting columns are provided on one side of the first sealing outer ring and the first sealing inner ring, and a plurality of limiting holes adapted to the limiting columns are opened on one side of the second sealing outer ring and the second sealing inner ring.

[0013] Preferably, a detachable limiting rod is passed through one end of several of the clamping bolts, and a through hole adapted to the limiting rod is passed through the side surfaces of one end of several of the clamping bolts.

[0014] In view of the deficiencies of the prior art, the utility model provides a high-pressure combined sealing ring, which overcomes the deficiencies of the prior art. The beneficial effects of the utility model are:

[0015] 1. In the utility model, a first sealing outer ring, a second sealing outer ring, a first sealing inner ring and a second sealing inner ring are provided, and symmetrical extrusion bevels are provided on the opposite sides of the first sealing inner ring and the first sealing outer ring, and on the opposite sides of the second sealing outer ring and the second sealing inner ring, respectively. The first clamping ring and the second clamping ring connected by a connecting unit are matched. When the sealing performance of the first sealing outer ring, the second sealing outer ring, the first sealing inner ring and the second sealing inner ring is reduced, the first clamping ring and the second clamping ring are adjusted by the connecting unit. When the first clamping ring and the second clamping ring are close to each other, the extrusion bevels will squeeze the first sealing outer ring and the second sealing outer ring to cling to the inner wall of the shaft sleeve again, and the first sealing inner ring and the second sealing inner ring will cling to the side of the rotating shaft again, thereby improving the service life of the combined sealing ring body, reducing the number of times the combined sealing ring body is replaced, and the first clamping ring and the second clamping ring can be repeatedly recycled, thereby reducing the cost of replacing the combined sealing ring body.

[0016] 2. In the utility model, a limiting rod is provided. After the first clamping ring and the second clamping ring are connected by a clamping bolt, the limiting rod is passed through the through hole provided on the clamping bolt, and the two ends of the limiting rod are connected to prevent the clamping bolt from loosening.

[0017] 3. In the utility model, a limiting ring and a limiting groove are provided. After the first clamping ring and the second clamping ring are installed, the limiting ring is inserted into the limiting groove to prevent the positions of the first clamping ring and the second clamping ring from being offset, which would cause the clamping bolt to break under stress, thereby improving the strength of the overall combined sealing ring after installation.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a schematic structural diagram of the utility model after overall installation, viewed along the symmetry axis;

[0021] Figure 2 It is a structural schematic diagram of the first clamping ring and the second clamping ring in the utility model in section along the symmetry axis;

[0022] Figure 3 It is a schematic diagram of the structure of the limiting column and the limiting hole in the utility model;

[0023] Figure 4 for Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 5 for Figure 3 Enlarged structural diagram at B in the middle.

[0025] In the figure: 1. combined sealing ring body; 2. rotating shaft; 3. sleeve; 4. first sealing outer ring; 5. second sealing outer ring; 6. first sealing inner ring; 7. second sealing inner ring; 8. extrusion bevel; 9. first clamping ring; 10. second clamping ring; 11. clamping bolt; 12. threaded hole; 13. limiting ring; 14. limiting groove; 15. open groove; 16. rubber pad; 17. limiting column; 18. limiting hole; 19. limiting rod; 20. through hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 5 A high-pressure combined sealing ring comprises a combined sealing ring body 1, which is used to seal between a rotating shaft 2 and a sleeve 3. The combined sealing ring body 1 comprises a first sealing outer ring 4, a second sealing outer ring 5, a first sealing inner ring 6 and a second sealing inner ring 7 located between the rotating shaft 2 and the sleeve 3. One side of the first sealing outer ring 4 and the second sealing outer ring 5 abuts against the inner side wall of the sleeve 3, one side of the first sealing inner ring 6 and the second sealing inner ring 7 abuts against the side of the rotating shaft 2, and the first sealing inner ring 6 and the first sealing outer ring 4 face each other, and the second sealing inner ring 7 abuts against the side of the rotating shaft 2. Symmetrical extrusion bevels 8 are provided on the facing sides of the sealing outer ring 5 and the second sealing inner ring 7, a first clamping ring 9 whose side is adapted to the extrusion bevel 8 is provided between the first sealing outer ring 4 and the first sealing inner ring 6, a second clamping ring 10 whose side is adapted to the extrusion bevel 8 is provided between the second sealing outer ring 5 and the second sealing inner ring 7, a sealing connecting unit is provided between the first clamping ring 9 and the second clamping ring 10, and the connecting unit is used to connect the first clamping ring 9 and the second clamping ring 10 and can adjust the distance between the first clamping ring 9 and the second clamping ring 10.

[0029] Specific implementation method in this embodiment: when installing the combined sealing ring body 1, the first sealing outer ring 4 and the second sealing outer ring 5 are installed against the inner wall of the sleeve 3, the first sealing inner ring 6 and the second sealing inner ring 7 are sleeved on the side of the rotating shaft 2 for installation, the first sealing outer ring 4 and the first sealing inner ring 6 are aligned, the second sealing outer ring 5 and the second sealing inner ring 7 are aligned, the first clamping ring 9 is clamped between the first sealing outer ring 4 and the first sealing inner ring 6, the second clamping ring 10 is clamped between the second sealing outer ring 5 and the second sealing inner ring 7, and the first clamping ring 9 and the second clamping ring 10 are connected by a connecting unit. After being used for a period of time, the first sealing outer ring 4 When the sealing performance of the second sealing outer ring 5, the first sealing inner ring 6 and the second sealing inner ring 7 deteriorates, the first clamping ring 9 and the second clamping ring 10 are made close to each other by adjusting the connecting unit. When the first clamping ring 9 and the second clamping ring 10 are close to each other, the first sealing outer ring 4 and the second sealing outer ring 5 are squeezed to be close to the inner wall of the sleeve 3 again through the extrusion angle 8, and the first sealing inner ring 6 and the second sealing inner ring 7 are close to the side of the rotating shaft 2 again, thereby improving the service life of the combined sealing ring body 1 and reducing the number of replacement times of the combined sealing ring body 1. The first clamping ring 9 and the second clamping ring 10 can be repeatedly recycled, reducing the cost of replacing the combined sealing ring body 1.

[0030] Embodiment 2

[0031] See also Figure 1-Figure 5 , this embodiment includes the above-mentioned embodiment, wherein the connecting unit includes a plurality of clamping bolts 11 with one end passing through the first clamping ring 9, a threaded hole 12 adapted to the clamping bolt 11 is opened on the second clamping ring 10, and an opening groove 15 is opened on the opposite sides of the first clamping ring 9 and the second clamping ring 10, and the connecting unit is located in the opening groove 15, and a rubber pad 16 is provided in the two opening grooves 15, and the side of the rubber pad 16 in the opening groove 15 on the first clamping ring 9 is against one end of the clamping bolt 11, a detachable limit rod 19 is passed through one end of the plurality of clamping bolts 11, and a through hole 20 adapted to the limit rod 19 is passed through the side of one end of the plurality of clamping bolts 11.

[0032] Specific implementation method in this embodiment: a through hole adapted to one end of a clamping bolt 11 is opened at the bottom of the open groove 15 on the first clamping ring 9. When the first clamping ring 9 and the second clamping ring 10 need to be connected and installed, one end of the clamping bolt 11 passes through the through hole in the open groove 15 and one end is threadedly connected with the threaded hole 12 on the second clamping ring 10. The clamping bolt 11 is tightened to connect the first clamping ring 9 and the second clamping ring 10. After several clamping bolts 11 are tightened, they are penetrated through the limiting rod 19. Through holes 20 are formed on the clamping bolts 11, and the two ends of the limiting rod 19 are connected. The limiting rod 19 is used to limit the clamping bolts 11 to prevent the clamping bolts 11 from loosening. The limiting rod 19 can be an iron wire or a steel wire, etc. It has deformability and the two ends can be connected and separated. After the limiting rod 19 is installed, the rubber pad 16 is installed in the open groove 15 by threaded connection. One side of the rubber pad 16 is tightly against one end of the clamping bolt 11 to prevent the clamping bolt 11 from loosening.

[0033] Implementation Three

[0034] See also Figure 3-Figure 5 This embodiment includes all the above embodiments, and further includes: a limiting ring 13 is fixedly connected to the side of the second clamping ring 10 close to the first clamping ring 9, a limiting groove 14 adapted to the limiting ring 13 is opened on the side of the first clamping ring 9 close to the second clamping ring 10, a plurality of limiting columns 17 are provided on one side of the first sealing outer ring 4 and the first sealing inner ring 6, and a plurality of limiting holes 18 adapted to the limiting columns 17 are opened on one side of the second sealing outer ring 5 and the second sealing inner ring 7.

[0035] The specific implementation method in this embodiment is as follows: the limiting ring 13 is clamped in the limiting groove 14 to limit the first clamping ring 9 and the second clamping ring 10 to prevent deviation between the first clamping ring 9 and the second clamping ring 10, which causes the clamping bolt 11 to break due to strain; the limiting column 17 is clamped in the limiting hole 18 to limit the first sealing outer ring 4 and the second sealing outer ring 5, the first sealing inner ring 6 and the second sealing inner ring 7 to prevent a single sealing ring among the first sealing outer ring 4, the second sealing outer ring 5, the first sealing inner ring 6 and the second sealing inner ring 7 from rotating, thereby improving the sealing strength of the overall combined sealing ring body 1.

[0036] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-pressure combined seal ring, comprising a combined seal ring body (1), wherein the combined seal ring body (1) is used to seal between a rotating shaft (2) and a shaft sleeve (3), and is characterized in that: The combined sealing ring body (1) comprises a first sealing outer ring (4), a second sealing outer ring (5), a first sealing inner ring (6) and a second sealing inner ring (7) located between a rotating shaft (2) and a shaft sleeve (3); one side of the first sealing outer ring (4) and the second sealing outer ring (5) are both in contact with the inner wall of the shaft sleeve (3); one side of the first sealing inner ring (6) and the second sealing inner ring (7) are both in contact with the side of the rotating shaft (2); and the facing side of the first sealing inner ring (6) and the first sealing outer ring (4) and the facing side of the second sealing outer ring (5) and the second sealing inner ring (7) are provided with a pair of A first pressing ring (9) having a side surface adapted to the extrusion angle (8) is provided between the first sealing outer ring (4) and the first sealing inner ring (6), a second pressing ring (10) having a side surface adapted to the extrusion angle (8) is provided between the second sealing outer ring (5) and the second sealing inner ring (7), a sealing connection unit is provided between the first pressing ring (9) and the second pressing ring (10), and the connection unit is used to connect the first pressing ring (9) and the second pressing ring (10) and can adjust the distance between the first pressing ring (9) and the second pressing ring (10).

2. A high pressure combined sealing ring according to claim 1, characterized in that: The connection unit comprises a plurality of clamping bolts (11) one end of which passes through the first clamping ring (9), and the second clamping ring (10) is provided with threaded holes (12) adapted to the clamping bolts (11).

3. A high pressure combined sealing ring according to claim 1, characterized in that: The second clamping ring (10) is fixedly connected to a limiting ring (13) on one side close to the first clamping ring (9), and the first clamping ring (9) is provided with a limiting groove (14) adapted to the limiting ring (13) on one side close to the second clamping ring (10).

4. A high pressure combined sealing ring according to claim 1, characterized in that: The first clamping ring (9) and the second clamping ring (10) are both provided with opening grooves (15) on the opposite sides thereof, and the connection unit is located in the opening grooves (15).

5. A high pressure combined sealing ring according to claim 4, characterized in that: Rubber pads (16) are provided in the two opening grooves (15), and the side surface of the rubber pad (16) in the opening groove (15) on the first clamping ring (9) abuts against one end of the clamping bolt (11).

6. A high pressure combined sealing ring according to claim 1, characterized in that: A plurality of limiting columns (17) are provided on one side of the first sealing outer ring (4) and the first sealing inner ring (6), and a plurality of limiting holes (18) adapted to the limiting columns (17) are provided on one side of the second sealing outer ring (5) and the second sealing inner ring (7).

7. A high pressure combined sealing ring according to claim 2, characterized in that: A detachable limiting rod (19) is passed through one end of a plurality of the clamping bolts (11), and a through hole (20) adapted to the limiting rod (19) is passed through the side surface of one end of a plurality of the clamping bolts (11).

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