Sealing ring for hydraulic system

Abstract

The utility model discloses a sealing ring for a hydraulic system, which comprises a U-shaped sealing ring, the bent end of the U-shaped sealing ring is semicircular, a support spring is mounted on the inner side of the semicircular end of the U-shaped sealing ring, the support spring is circular, sealing ring pieces are fixedly connected to two sides of the support spring, deformation notches are formed in the sealing ring pieces along gaps of the support spring, and the deformation notches are fixedly connected with the U-shaped sealing ring. The sealing ring pieces are attached to the inner sides of the opening ends of the U-shaped sealing rings respectively. The sealing ring pieces are installed on the two sides of the supporting spring, and the two sides of the opening end of the U-shaped sealing ring are supported through the sealing ring pieces, so that the sealing ring pieces are attached to the sealing position more tightly.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing rings and relates to a sealing ring for a hydraulic system. Background Art

[0002] The hydraulic system is a mechanical system that uses liquid to transmit power and control. The seal ring is one of the sealing components in the hydraulic system. Since the hydraulic system needs to withstand high liquid pressure, the requirements for the seal ring are relatively high. During installation, the seal ring may not be able to seal well or its service life may be reduced due to twisting or loose fit with the seal. Utility Model Content

[0003] In view of the above problems, the utility model proposes a sealing ring for a hydraulic system, which well solves the problems in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A sealing ring for a hydraulic system, comprising:

[0006] A U-shaped sealing ring, wherein one end of the U-shaped sealing ring is bent into a semicircular arc shape;

[0007] A support spring, the support spring is in a circular ring shape and is installed at the semicircular arc end of the U-shaped sealing ring;

[0008] Sealing ring pieces are fixedly connected to both sides of the support spring, and the sealing ring pieces are provided with deformation notches along the gap of the support spring, and the sealing ring pieces are respectively attached to the inner sides of the opening ends of the U-shaped sealing ring.

[0009] Optionally, the opening end of the U-shaped sealing ring is expanded outward, and the U-shaped sealing ring is V-shaped.

[0010] Optionally, a skirt is provided on the outer side of the opening end of the U-shaped sealing ring, and the skirt is provided with a plurality of strips.

[0011] Optionally, a limiting ring is movably disposed in the support spring, the cross-sectional diameter of the limiting ring is smaller than the inner diameter of the support spring, and the limiting ring is provided with at least one opening.

[0012] Optionally, the deformation notch is V-shaped.

[0013] Optionally, the sealing ring sheet is installed along the tangential direction of the support spring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] A support spring is installed on the inner side of the U-shaped sealing ring to provide support for the U-shaped sealing ring, thereby reducing the possibility of torsional deformation during installation. At the same time, the support spring allows the U-shaped sealing ring to maintain a greater extrusion force on both sides of the sealing position to form a better seal. Sealing ring sheets are installed on both sides of the support spring to support both sides of the opening end of the U-shaped sealing ring, so that the sealing ring sheets can fit the sealing position more closely. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model.

[0018] Figure numerals: 1, U-shaped sealing ring; 11, skirt; 2, support spring; 21, limit ring; 3, sealing ring piece; 31, deformation notch. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 and Figure 2 , which is a sealing ring for a hydraulic system disclosed in an embodiment of the utility model, includes a U-shaped sealing ring 1, one end of the U-shaped sealing ring 1 is bent in a semicircular arc shape, a support spring 2 is installed on the inner side of the semicircular arc end of the U-shaped sealing ring 1, the support spring 2 is annular, and sealing ring pieces 3 are fixedly connected on both sides of the support spring 2. The sealing ring pieces 3 are provided with deformation notches 31 along the gap of the support spring 2, and the sealing ring pieces 3 are respectively attached to the inner sides of the open ends of the U-shaped sealing ring 1.

[0021] Specifically, a support spring 2 is installed inside the U-shaped sealing ring 1, and the support spring 2 provides support for the U-shaped sealing ring 1, thereby reducing the possibility of torsional deformation during installation. At the same time, the support spring 2 enables the U-shaped sealing ring 1 to maintain a greater extrusion force on both sides of the sealing position, thereby forming a better seal. Sealing ring pieces 3 are installed on both sides of the support spring 2, and the sealing ring pieces 3 support both sides of the opening end of the U-shaped sealing ring 1, so that the sealing ring pieces 3 are more closely fitted to the sealing position.

[0022] In some feasible ways, the support spring 2 is formed into a spring shape by spiraling a rectangular sheet, and the ends are connected. The sealing ring 3 is in the shape of a circular ring. It should be understood that the sealing ring needs to have a certain deformation during installation. By setting the deformation notch 31, the sealing ring 3 is separated into several sections following the gap of the support spring 2. During installation, the sealing ring 3 is deformed following the support spring 2. The sealing ring 3 is installed on the outside of the support spring 2. After the sealing ring 3 segment is deformed under pressure, the torsion of the support spring 2 provides elastic force to increase the integrity of the sealing ring 3 part. In order to increase the fit between the sealing ring 3 and the support spring 2 and the U-shaped sealing ring 1, the sealing ring 3 is installed along the tangent direction of the support spring 2.

[0023] As a specific implementation of a sealing ring for a hydraulic system provided by the utility model, the opening end of the U-shaped sealing ring 1 is expanded outward, and the U-shaped sealing ring 1 is V-shaped.

[0024] In general, by expanding the open end of the U-shaped sealing ring 1 outward, the two sides of the U-shaped sealing ring 1 can fit more easily with the sealing surface, thereby forming a better seal.

[0025] As another specific implementation of a sealing ring for a hydraulic system provided by the utility model, a skirt 11 is arranged on the outer side of the opening end of the U-shaped sealing ring 1, and a plurality of skirts 11 are arranged.

[0026] In combination with specific usage scenarios, the failure of the sealing ring is affected by many factors, including the outflow of liquid through the gap under high pressure and the wear and damage caused by impurities in the oil eroding the sealing ring. By setting a multi-layer skirt 11, the U-shaped sealing ring 1 forms a multi-layer seal at the open end, which is convenient for better interception of the liquid and at the same time increases the service life of the U-shaped sealing ring 1.

[0027] In some feasible embodiments, the skirt 11 is in the shape of a circular ring with a rectangular cross-section, a certain angle is formed between the skirt 11 and the side of the U-shaped sealing ring 1 , and the opening is in the same direction as the opening of the U-shaped sealing ring 1 .

[0028] As a specific implementation of a sealing ring for a hydraulic system provided by the utility model, a limit ring 21 is movably arranged in the support spring 2, the cross-sectional diameter of the limit ring 21 is smaller than the inner diameter of the support spring 2, and the limit ring 21 is provided with at least one opening.

[0029] It should be understood that the limit ring 21 is provided to limit the minimum compression amount of the support spring 2 in the box, thereby reducing the situation where the limit ring 21 is deformed too much and cannot be restored when the pressure is too high.

[0030] In some feasible embodiments, the cross-sectional diameter of the limiting ring 21 is smaller than the inner diameter of the supporting spring 2, so that the supporting spring 2 has a suitable deformation space, and by providing at least one opening in the limiting ring 21, the limiting ring 21 has a certain deformation ability, which is convenient for the installation of the sealing ring and enables the sealing ring to be wrapped outside when being installed.

[0031] As a specific implementation of a sealing ring for a hydraulic system provided by the utility model, the deformation notch 31 is V-shaped.

[0032] It should be understood that the U-shaped sealing ring 1 is annular, and the deformation of the inner and outer sides is different when expanding or contracting. By providing a V-shaped opening, the contraction space inside the sealing ring piece 3 is increased.

[0033] In some feasible embodiments, the V-shaped opening is directed toward the inner side of the sealing ring 3 .

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing ring for a hydraulic system, characterized in that: include: A U-shaped sealing ring, wherein one end of the U-shaped sealing ring is bent into a semicircular arc shape; A support spring, the support spring is in a circular ring shape and is installed at the semicircular arc end of the U-shaped sealing ring; Sealing ring pieces are fixedly connected to both sides of the support spring, and the sealing ring pieces are provided with deformation notches along the gap of the support spring, and the sealing ring pieces are respectively attached to the inner sides of the opening ends of the U-shaped sealing ring.

2. A sealing ring for a hydraulic system according to claim 1, characterized in that: The open end of the U-shaped sealing ring is expanded outward, and the U-shaped sealing ring is V-shaped.

3. A sealing ring for a hydraulic system according to claim 1, characterized in that: A skirt is arranged on the outer side of the opening end of the U-shaped sealing ring, and a plurality of skirts are arranged on the outer side.

4. A sealing ring for a hydraulic system according to claim 1, characterized in that: A limiting ring is movably arranged inside the support spring, the cross-sectional diameter of the limiting ring is smaller than the inner diameter of the support spring, and the limiting ring is provided with at least one opening.

5. A sealing ring for a hydraulic system according to claim 1, characterized in that: The deformation notch is V-shaped.

6. A sealing ring for a hydraulic system according to claim 1, characterized in that: The sealing ring sheet is installed along the tangential direction of the support spring.

Images