A high pressure resistant sealing filler

Abstract

The utility model relates to the technical field of sealing packings, and discloses a high-pressure resistant sealing packing, which solves the problem that the existing sealing packings have poor use effects, and comprises a sealing packing body, which is sleeved on a rotating shaft, and the sealing packing body is composed of a packing shell, a bottom bushing, a plurality of bottom packing rings, a plurality of top packing rings, a plurality of pressure-resistant oil storage components and a pressure cover, the bottom bushing is clamped at the bottom end inside the packing shell, the pressure cover is connected to the top end of the packing shell and inserted into the packing shell, the bottom packing ring, the top packing ring and the pressure-resistant oil storage component are all connected to the inside of the packing shell and are located between the bottom bushing and the pressure cover, and the pressure-resistant oil storage component is located on the side between the bottom packing ring and the top packing ring; the sealing packing can be pre-tightened according to the use state during use, thereby improving the sealing effect, and can increase the lubrication performance during the pre-tightening process, reduce the friction with the rotating shaft, and can be suitable for high-pressure environments.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing fillers, in particular to a high-pressure resistant sealing filler. Background Art

[0002] Packing seal refers to a dynamic sealing device that generates compression force between the packing and the rotating parts and fixed parts through pre-tightening or self-tightening of the medium pressure.

[0003] The sealing packings currently used generally have lubricating oil filled inside the packing medium. Since the lubricating oil in the sealing packing will be lost as the use time increases, the lubrication effect will be affected. In addition, the existing sealing packings generally do not have an adjustment function. When the packing medium becomes loose during later use, it cannot be pre-tightened, which affects the sealing effect. It is easy to cause liquid or gas leakage during normal use or in a high-pressure environment, and the use effect is poor. Therefore, the present application proposes a high-pressure resistant sealing packing. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-pressure resistant sealing filler, which effectively solves the problem that the existing sealing filler has a poor use effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure resistant sealing packing, including a sealing packing body, which is sleeved on a rotating shaft. The sealing packing body is composed of a packing shell, a bottom bushing, a plurality of bottom packing rings, a plurality of top packing rings, a plurality of pressure-resistant oil storage assemblies and a pressure cover. The bottom bushing is clamped at the bottom end of the inside of the packing shell and sleeved on the rotating shaft. The pressure cover is connected to the top end of the packing shell and inserted into the packing shell. The bottom packing ring, the top packing ring and the pressure-resistant oil storage assembly are all connected to the inside of the packing shell and are located between the bottom bushing and the pressure cover. The pressure-resistant oil storage assembly is located on the side between the bottom packing ring and the top packing ring.

[0006] Preferably, an installation groove matching the bottom bushing is opened at the bottom end of the packing shell, a placement groove matching the bottom packing ring, the top packing ring and the pressure-resistant oil storage assembly is opened at the middle position of the packing shell, and an internal thread groove matching the pressure cover is opened at the top end of the packing shell.

[0007] Preferably, a through slot one matching the rotating shaft is provided inside the bottom bushing, the inner diameter of the through slot one is larger than the outer diameter of the rotating shaft, and a limiting ring matching the placement groove is fixedly provided at the top end of the arc-shaped outer edge of the bottom bushing.

[0008] Preferably, a through slot 2 matching the shaft is provided inside the gland, the inner diameter of the through slot 2 is larger than the outer diameter of the shaft, and an external thread matching the internal thread groove is provided at the bottom end of the arc-shaped outer surface of the gland.

[0009] Preferably, the pressure-resistant oil storage assembly consists of an oil storage casing, a top piston, a bottom piston, a plurality of pressure-resistant springs and an oil suction core. The top piston and the bottom piston slide and penetrate the top and bottom ends of the oil storage casing respectively. The pressure-resistant springs and the oil suction core are both connected to the interior of the oil storage casing and are located between the top piston and the bottom piston. The interior of the oil storage casing is filled with lubricating oil.

[0010] Preferably, a plurality of oil guide channels are provided on the top piston and the bottom piston, annular limiting grooves are provided on the arcuate outer sides of the top piston and the bottom piston, and limiting connecting rings matching the annular limiting grooves are fixedly provided at both ends of the oil storage casing.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) During operation, by providing the gland, the internal thread groove and the external thread, when the connection between the bottom packing ring and the top packing ring and the rotating shaft becomes loose, the bottom packing ring and the top packing ring can be pre-tightened to improve the fit between the bottom packing ring and the top packing ring and the rotating shaft, thereby avoiding leakage of liquid or gas and improving the sealing effect;

[0013] (2) By providing a pressure-resistant oil storage assembly consisting of an oil storage housing, a top piston, a bottom piston, a plurality of pressure-resistant springs and an oil suction core, when the bottom packing ring and the top packing ring become loose or the lubricating oil in the bottom packing ring and the top packing ring is lost, the lubricating oil can be replenished to the bottom packing ring and the top packing ring, thereby improving the lubrication effect. The pressure-resistant spring can achieve a compensation effect, thereby avoiding excessive deformation of the bottom packing ring and the top packing ring during the process of replenishing the lubricating oil, thereby increasing the friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] In the attached picture:

[0016] Figure 1 This is a schematic diagram of the structure of the high pressure resistant sealing packing of the utility model;

[0017] Figure 2 This is a cross-sectional view of the high-pressure resistant sealing packing of the utility model;

[0018] Figure 3 This is an exploded diagram of the high pressure resistant sealing packing of the utility model;

[0019] Figure 4 This is one of the schematic diagrams of the structure of the pressure-resistant oil storage assembly of the utility model;

[0020] Figure 5 This is the second schematic diagram of the structure of the pressure-resistant oil storage assembly of the utility model;

[0021] In the figure: 1. Sealing packing body; 2. Rotating shaft; 3. Packing shell; 4. Bottom bushing; 5. Bottom packing ring; 6. Top packing ring; 7. Pressure-resistant oil storage assembly; 8. Pressure cover; 9. Mounting groove; 10. Placement groove; 11. Internal thread groove; 12. Through groove one; 13. Limiting ring; 14. Through groove two; 15. External thread; 16. Oil storage sleeve; 17. Top piston; 18. Bottom piston; 19. Pressure-resistant spring; 20. Oil suction core; 21. Oil guide channel; 22. Annular limiting groove; 23. Limit connecting ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Depend on Figures 1 to 3 The utility model provides a high-pressure resistant sealing packing, comprising a sealing packing body 1, which is sleeved on a rotating shaft 2. The sealing packing body 1 is composed of a packing shell 3, a bottom bushing 4, a plurality of bottom packing rings 5, a plurality of top packing rings 6, a plurality of pressure-resistant oil storage components 7 and a gland 8. The bottom bushing 4 is clamped at the bottom end of the packing shell 3 and sleeved on the rotating shaft 2. The gland 8 is connected to the top of the packing shell 3 and inserted into the packing shell 3. The bottom packing ring 5, the top packing ring 6 and the pressure-resistant oil storage component 7 are all connected to the inside of the packing shell 3 and are located between the bottom bushing 4 and the gland 8. The pressure-resistant oil storage component 7 is located on the side between the bottom packing ring 5 and the top packing ring 6.

[0024] When in use, the bottom bushing 4 is installed inside the packing housing 3, and then the bottom packing ring 5, the top packing ring 6 and the pressure-resistant oil storage assembly 7 are installed, so that the pressure-resistant oil storage assembly 7 is located between the bottom packing ring 5 and the top packing ring 6, and finally the gland 8 is installed, and a gap is reserved between the gland 8 and the packing housing 3;

[0025] Depend on Figures 1 to 3It is given that a mounting groove 9 matching the bottom bushing 4 is provided at the bottom end of the packing shell 3, a placement groove 10 matching the bottom packing ring 5, the top packing ring 6 and the pressure-resistant oil storage assembly 7 is provided at the middle position of the packing shell 3, an internal thread groove 11 matching the pressure cover 8 is provided at the top end of the packing shell 3, a through groove 12 matching the rotating shaft 2 is provided inside the bottom bushing 4, the inner diameter of the through groove 12 is larger than the outer diameter of the rotating shaft 2, a limiting ring 13 matching the placement groove 10 is fixedly provided at the top end of the arc-shaped outer edge of the bottom bushing 4, a through groove 2 14 matching the rotating shaft 2 is provided inside the pressure cover 8, the inner diameter of the through groove 2 14 is larger than the outer diameter of the rotating shaft 2, and an external thread 15 matching the internal thread groove 11 is provided at the bottom end of the arc-shaped outer surface of the pressure cover 8;

[0026] During later use, if the connection between the bottom packing ring 5 and the top packing ring 6 and the rotating shaft 2 is loosened, the pressure cover 8 is rotated by a wrench to feed the pressure cover 8 into the packing shell 3, thereby pre-tightening the bottom packing ring 5 and the top packing ring 6, improving the fit between the bottom packing ring 5 and the top packing ring 6 and the rotating shaft 2, and thus improving the sealing effect. By setting the inner diameter of the through groove 1 12 to be larger than the outer diameter of the rotating shaft 2 and the inner diameter of the through groove 2 14 to be larger than the outer diameter of the rotating shaft 2, the bottom bushing 4 and the pressure cover 8 can be prevented from contacting the rotating shaft 2;

[0027] Depend on Figures 2 to 5 It is given that the pressure-resistant oil storage assembly 7 is composed of an oil storage casing 16, a top piston 17, a bottom piston 18, a plurality of pressure-resistant springs 19 and an oil suction core 20. The top piston 17 and the bottom piston 18 are respectively slidably inserted into the top and bottom ends of the oil storage casing 16. The pressure-resistant spring 19 and the oil suction core 20 are both connected to the inside of the oil storage casing 16 and are located between the top piston 17 and the bottom piston 18. The inside of the oil storage casing 16 is filled with lubricating oil. The top piston 17 and the bottom piston 18 are both provided with a plurality of oil guide channels 21. The arc-shaped outer sides of the top piston 17 and the bottom piston 18 are both provided with an annular limiting groove 22. Both ends of the oil storage casing 16 are fixedly provided with a limiting connecting ring 23 matching the annular limiting groove 22.

[0028] When the lubricating oil in the bottom packing ring 5 and the top packing ring 6 is missing and the lubrication effect is poor, the pressure cap 8 is rotated by a wrench to feed the pressure cap 8 into the packing shell 3. At this time, the top piston 17 and the bottom piston 18 are subjected to pressure and move toward the inside of the oil storage sleeve 16. The top piston 17 and the bottom piston 18 squeeze the oil absorption core 20 so that the lubricating oil inside the oil absorption core 20 is discharged along the oil guide channel 21, so that the lubricating oil enters the bottom packing ring 5 and the top packing ring 6 along the oil guide channel 21, thereby improving the lubrication effect. The anti-compression spring 19 can achieve compensation and limiting effects, and can avoid excessive deformation of the bottom packing ring 5 and the top packing ring 6. The annular limiting groove 22 and the limiting connecting ring 23 can achieve a limiting effect between the oil storage sleeve 16 and the top piston 17 and the bottom piston 18, thereby improving stability.

[0029] During operation, by providing a pressure cover, an internal thread groove and an external thread, the bottom packing ring and the top packing ring can be pre-tightened when the connection between the bottom packing ring and the top packing ring and the rotating shaft becomes loose, thereby improving the fit between the bottom packing ring and the top packing ring and the rotating shaft, avoiding leakage of liquid or gas, and improving the sealing effect; by providing a pressure-resistant oil storage assembly composed of an oil storage sleeve, a top piston, a bottom piston, a plurality of pressure-resistant springs and an oil suction core, the bottom packing ring and the top packing ring can be replenished with lubricating oil when the bottom packing ring and the top packing ring become loose or the lubricating oil in the bottom packing ring and the top packing ring is missing, thereby improving the lubrication effect, and the pressure-resistant spring can achieve compensation to avoid excessive deformation of the bottom packing ring and the top packing ring during the process of replenishing the lubricating oil, thereby avoiding increased friction.

Claims

1. A high pressure resistant sealing packing, comprising a sealing packing body (1), characterized in that: The sealing packing body (1) is sleeved on the rotating shaft (2). The sealing packing body (1) is composed of a packing shell (3), a bottom bushing (4), a plurality of bottom packing rings (5), a plurality of top packing rings (6), a plurality of pressure-resistant oil storage components (7) and a pressure cover (8). The bottom bushing (4) is clamped at the bottom end of the packing shell (3) and sleeved on the rotating shaft (2). The pressure cover (8) is connected to the top end of the packing shell (3) and inserted into the packing shell (3). The bottom packing ring (5), the top packing ring (6) and the pressure-resistant oil storage component (7) are all connected to the inside of the packing shell (3) and are located between the bottom bushing (4) and the pressure cover (8). The pressure-resistant oil storage component (7) is located on the side between the bottom packing ring (5) and the top packing ring (6).

2. The high pressure resistant sealing filler according to claim 1, characterized in that: The bottom end of the packing shell (3) is provided with a mounting groove (9) matching the bottom bushing (4), the middle position of the packing shell (3) is provided with a placement groove (10) matching the bottom packing ring (5), the top packing ring (6) and the pressure-resistant oil storage assembly (7), and the top end of the packing shell (3) is provided with an internal thread groove (11) matching the gland (8).

3. A high pressure resistant sealing filler according to claim 2, characterized in that: The bottom bushing (4) is provided with a through groove (12) matching the rotating shaft (2), the inner diameter of the through groove (12) is larger than the outer diameter of the rotating shaft (2), and a limiting ring (13) matching the placement groove (10) is fixedly provided at the top end of the arc-shaped outer side edge of the bottom bushing (4).

4. The high pressure resistant sealing filler according to claim 2, characterized in that: The gland (8) is provided with a second through groove (14) matching the rotating shaft (2), the inner diameter of the second through groove (14) is larger than the outer diameter of the rotating shaft (2), and the bottom end of the arc-shaped outer surface of the gland (8) is provided with an external thread (15) matching the internal thread groove (11).

5. The high pressure resistant sealing filler according to claim 1, characterized in that: The pressure-resistant oil storage assembly (7) is composed of an oil storage casing (16), a top piston (17), a bottom piston (18), a plurality of pressure-resistant springs (19) and an oil absorption core (20); the top piston (17) and the bottom piston (18) are respectively slidably inserted into the top end and the bottom end of the oil storage casing (16); the pressure-resistant spring (19) and the oil absorption core (20) are both connected to the inside of the oil storage casing (16) and are located between the top piston (17) and the bottom piston (18); and the inside of the oil storage casing (16) is filled with lubricating oil.

6. The high pressure resistant sealing filler according to claim 5, characterized in that: The top piston (17) and the bottom piston (18) are each provided with a plurality of oil guide channels (21); the arc-shaped outer sides of the top piston (17) and the bottom piston (18) are each provided with an annular limiting groove (22); and limiting connecting rings (23) matching the annular limiting groove (22) are fixedly provided at both ends of the oil storage casing (16).

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