Rotary table piston sealing structure for preventing oil leakage

Abstract

The utility model discloses a rotary table piston sealing structure for preventing oil leakage, which comprises a piston and a cylinder body, the piston is arranged in the cylinder body, the rotary table piston sealing structure further comprises a sealing ring and an oil scraping blade which are arranged on the piston, and an oil groove arranged on the cylinder body, the oil scraping blade is used for scraping hydraulic oil in the cylinder body, and the oil groove is used for collecting and storing redundant hydraulic oil. An oil return hole is formed in the oil groove, an oil discharge hole is formed in one end of the cylinder body, the oil return hole is communicated with the oil discharge hole, hydraulic oil enters the oil return hole and is discharged by the oil discharge hole, and a communicating pipeline of the oil return hole and the oil discharge hole is L-shaped. According to the rotary table piston sealing structure for preventing oil leakage, when the piston moves in the cylinder body, the oil scraping blade rubs the inner wall of the cylinder body, hydraulic oil is prevented from invading the sealing ring, meanwhile, the hydraulic oil discharged by the oil scraping blade can be discharged through the oil return hole and the oil discharge hole, and after a small amount of hydraulic oil invades the sealing ring, oil leakage is prevented. And the oil can be discharged outwards under the control of the one-way oil outlet hole and the one-way door.

Description

Technical Field

[0001] The utility model relates to the technical field of turntable pistons, in particular to a turntable piston sealing structure for preventing oil leakage. Background Art

[0002] As a key component of the piston within the turntable, the performance of the sealing ring is directly related to the turntable's operating efficiency and reliability. During turntable operation, the piston must reciprocate to achieve the desired release and lock functions, a process that relies on precise control of the hydraulic system. The sealing ring's primary responsibility is to ensure that the hydraulic system reaches the desired pressure, preventing insufficient pressure from causing the turntable to malfunction, thereby impacting the continuity and efficiency of the entire workflow. Among numerous sealing technologies, O-rings are widely used for piston sealing due to their unique structure and performance. An O-ring is an annular seal with a circular cross-section, typically made of rubber or other elastic or synthetic elastic materials. In the piston groove, the O-ring forms a close contact with the piston through its inherent elasticity, using friction to prevent hydraulic oil leakage. This sealing method is not only simple in structure, but also cost-effective and easy to install and maintain, making it widely used in hydraulic and pneumatic systems.

[0003] In hydraulic systems, the quality of hydraulic oil is crucial for stable operation. However, even after filtering, tiny impurities smaller than the filter's pore size may still be present. These impurities flow into the piston cylinder along with the hydraulic oil. Due to their small size, they can be pushed along the surface of the sealing ring by the hydraulic oil's pressure. In this process, these tiny impurities act like sand particles, causing tiny scratches on the sealing ring surface.

[0004] Although these scratches are invisible to the naked eye, they can gradually weaken the sealing performance of the seal. Over time and with frequent use, these scratches increase in number and depth, reducing the seal's elasticity and sealing effectiveness. Under high pressure, hydraulic oil may leak through these scratches, reducing the reliability of the entire hydraulic system. Utility Model Content

[0005] The purpose of the present utility model is to provide a turntable piston sealing structure for preventing oil leakage, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a turntable piston sealing structure for preventing oil leakage, comprising a piston and a cylinder, wherein the piston is arranged in the cylinder, and further comprising:

[0007] a sealing ring and an oil scraping blade provided on the piston, and an oil groove provided on the cylinder body;

[0008] The oil scraping blade is used to scrape off the hydraulic oil in the cylinder body, and the oil tank is used to collect and store excess hydraulic oil.

[0009] Preferably, an oil return hole is opened in the oil tank, and an oil drain hole is opened at one end of the cylinder body. The oil return hole and the oil drain hole are connected, and the hydraulic oil enters the oil return hole and is discharged by the oil drain hole. The connecting pipe between the oil return hole and the oil drain hole is L-shaped.

[0010] Preferably, the oil scraping blades are provided at both ends of the sealing ring to prevent excessive hydraulic oil from contacting the sealing ring. The oil scraping blades cooperate with the movement of the piston to scrape the inner wall of the cylinder.

[0011] Preferably, a one-way oil outlet hole is provided on the scraping blade, and a one-way door is provided in the one-way oil outlet hole. The one-way oil outlet hole has the function of discharging the hydraulic oil in the scraping blade and the sealing ring, and the one-way door is used to discharge the hydraulic oil in the sealing ring and the scraping blade.

[0012] Preferably, the one-way door is open outwards and opens and closes in coordination with the movement of the piston, thereby discharging the hydraulic oil.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the turntable piston sealing structure for preventing oil leakage, when the piston moves in the cylinder, the scraping blade will rub against the inner wall of the cylinder to prevent the hydraulic oil from invading the sealing ring. At the same time, the hydraulic oil discharged by the scraping blade can be discharged through the oil return hole and the oil discharge hole. After a small amount of hydraulic oil intrudes into the sealing ring, it can also be discharged outward through the one-way oil outlet hole and the one-way door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional appearance schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the interior of the piston of the utility model structure;

[0017] Figure 3 This is a schematic diagram of the inner wall of the cylinder of the utility model structure;

[0018] Figure 4 This is a partial schematic diagram of the oil scraping blade of the utility model structure.

[0019] In the figure: 1. Piston; 2. Cylinder body; 3. Sealing ring; 4. Oil scraper; 21. Oil groove; 22. Oil return hole; 23. Oil drain hole; 41. One-way oil outlet hole; 42. One-way door. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figure 1-3 The utility model provides a technical solution: a turntable piston sealing structure for preventing oil leakage, comprising a piston 1 and a cylinder body 2, wherein the piston 1 is arranged in the cylinder body 2, and the piston 1 performs repeated movements in the cylinder body 2, and further comprising: a sealing ring 3 and an oil scraping blade 4 arranged on the piston 1, the sealing ring 3 is used to strengthen the sealing performance of the piston 1, prevent leakage of hydraulic oil, and ensure the reliability and efficient operation of the system, the oil scraping blade 4 is used to scrape off excess hydraulic oil on the inner surface of the cylinder body 2, when the piston 1 descends, the oil scraping blade 4 is close to the inner wall of the cylinder body 2, scrapes off excess hydraulic oil, and prevents the hydraulic oil from invading the sealing ring 3, and an oil groove 21 is opened on the cylinder body 2, the oil groove 21 is used to collect and store the hydraulic oil scraped off by the oil scraping blade 4, the oil scraping blade 4 is used to scrape the hydraulic oil in the cylinder body 2, and the oil groove 21 is used to collect and store To store excess hydraulic oil, the oil tank 21 can further enhance the oil scraping ability of the sealing ring 3, reduce the damage of the hydraulic oil to the sealing ring 3, and extend the service life of the sealing ring 3. An oil return hole 22 is provided in the oil tank 21. The oil return hole 22 is used to accommodate the hydraulic oil collected in the oil tank 21 and discharge it outward through a pipe connected to the oil drain hole 23. An oil drain hole 23 is provided at one end of the cylinder body 2. The oil return hole 22 and the oil drain hole 23 are connected. The hydraulic oil enters the oil return hole 22 and is discharged by the oil drain hole 23. The discharged hydraulic oil returns to the cylinder body 2 to prevent waste. The pipeline connecting the oil return hole 22 and the oil drain hole 23 is L-shaped. The L-shape can ensure that the hydraulic oil can be discharged into the cylinder body 2. At the same time, this design also helps to reduce the risk of excessive hydraulic oil entering the working area, reduce maintenance costs, and improve the performance and reliability of the turntable.

[0023] When the turntable piston sealing structure for preventing oil leakage is used, when the piston 1 moves repeatedly in the cylinder body 2, the scraping blade 4 is close to the inner wall of the cylinder body 2, scraping off the excess hydraulic oil on the inner surface of the cylinder body 2. When the piston 1 moves downward, the scraping blade 4 is close to the inner wall of the cylinder body 2, scraping off the excess hydraulic oil, and preventing the hydraulic oil from invading the sealing ring 3. The oil groove 21 can further enhance the oil scraping ability of the sealing ring 3, reduce the damage of the hydraulic oil to the sealing ring 3, and extend the service life of the sealing ring 3. The hydraulic oil stored in the oil groove 21 is discharged back to the cylinder body 2 through a pipeline connected by the oil return hole 22 and the oil drain hole 23 to prevent waste.

[0024] Example 2

[0025] See also Figure 1 and Figure 4 The utility model provides a technical solution: a turntable piston sealing structure for preventing oil leakage, comprising a piston 1 and a cylinder body 2, wherein the piston 1 is arranged in the cylinder body 2 and repeatedly moves in the cylinder body 2, and further comprising: a sealing ring 3 and an oil scraping blade 4 arranged on the piston 1, the sealing ring 3 being used to strengthen the sealing performance of the piston 1, preventing leakage of hydraulic oil, and ensuring the reliability and efficient operation of the system, the oil scraping blade 4 being used to scrape off excess hydraulic oil on the inner surface of the cylinder body 2, and when the piston 1 moves downward, the oil scraping blade 4 is close to the inner wall of the cylinder body 2, scraping off excess hydraulic oil, and preventing hydraulic oil from invading the sealing ring 3.

[0026] The scraping blades 4 are provided at both ends of the sealing ring 3, so as to ensure that when the piston 1 moves up and down, the scraping blades 4 can scrape off the excess hydraulic oil on the inner surface of the cylinder body 2 to prevent the hydraulic oil from excessively contacting the sealing ring 3. The scraping blades 4 cooperate with the movement of the piston 1 to scrape off the inner wall of the cylinder body 2. A one-way oil outlet hole 41 is provided on the scraping blade 4. The one-way oil outlet hole 41 runs through the scraping blade 4 to ensure that the hydraulic oil in the space between the two scraping blades 4 can be discharged outward. A one-way door 42 is provided in the one-way oil outlet hole 41. All the one-way oil outlet holes 41 are equipped with a one-way door 42. The one-way door 42 can open and close automatically under the influence of inertia when the piston 1 moves upward, and the one-way door 42 below can open and close outward, so that the hydraulic oil in the scraper blade 4 can be discharged downward. When the piston 1 moves downward, the one-way door 42 above can open and close outward, so that the hydraulic oil in the scraper blade 4 can be discharged upward. The one-way oil outlet 41 has the function of discharging the hydraulic oil in the scraper blade 4 and the sealing ring 3. The one-way door 42 is used to discharge the hydraulic oil in the sealing ring 3 and the scraper blade 4. The one-way door 42 is open outward and opens and closes in conjunction with the movement of the piston 1 to discharge the hydraulic oil.

[0027] When the turntable piston sealing structure for preventing oil leakage is used, when there is hydraulic oil between the two one-way oil outlet holes 41, the one-way oil outlet hole 41 on the scraper blade 4 can be discharged outward, and a one-way door 42 is provided in the one-way oil outlet hole 41. The one-way door 42 can effectively prevent the hydraulic oil from flowing back into the sealing ring 3. The one-way door 42 can open and close automatically due to inertia when the piston 1 moves upward, and the lower one-way door 42 can open and close outward, so that the hydraulic oil in the scraper blade 4 can be discharged downward. When the piston 1 moves downward, the upper one-way door 42 can open and close outward, so that the hydraulic oil in the scraper blade 4 can be discharged upward, thereby preventing a small amount of hydraulic oil from seeping into the sealing ring 3 for a long time.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turntable piston sealing structure for preventing oil leakage, comprising a piston (1) and a cylinder (2), wherein the piston (1) is arranged in the cylinder (2), and is characterized in that: Also includes: A sealing ring (3) and an oil scraping blade (4) provided on the piston (1), and an oil groove (21) provided on the cylinder body (2); The oil scraping blade (4) is used to scrape off the hydraulic oil in the cylinder (2), and the oil tank (21) is used to collect and store excess hydraulic oil.

2. The turntable piston sealing structure for preventing oil leakage according to claim 1, characterized in that: An oil return hole (22) is provided in the oil groove (21), and an oil discharge hole (23) is provided at one end of the cylinder body (2). The oil return hole (22) and the oil discharge hole (23) are connected, and hydraulic oil enters the oil return hole (22) and is discharged by the oil discharge hole (23).

3. The turntable piston sealing structure for preventing oil leakage according to claim 1, characterized in that: The oil scraping blades (4) are provided at both ends of the sealing ring (3) to prevent excessive hydraulic oil from contacting the sealing ring (3).

4. A turntable piston sealing structure for preventing oil leakage according to claim 1 or 3, characterized in that: The oil scraping blade (4) is provided with a one-way oil outlet hole (41), a one-way door (42) is provided in the one-way oil outlet hole (41), and the one-way oil outlet hole (41) is used to discharge the hydraulic oil in the oil scraping blade (4) and the sealing ring (3).

5. The turntable piston sealing structure for preventing oil leakage according to claim 4, characterized in that: The one-way door (42) is open outwards and opens and closes in coordination with the movement of the piston (1).

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