CN223387972U - A sealing ring for a cylinder - Google Patents

Abstract

The utility model provides a sealing ring for a cylinder, which comprises a ring body, wherein the longitudinal section of the ring body is rectangular, the top surface of the ring body is provided with a ring groove, an elastic metal ring is arranged in the ring groove, the elastic metal ring comprises an inner ring and an outer ring, the lower edges of the inner ring and the outer ring are connected to form an annular space with an upward opening, the inner ring of the elastic metal ring is abutted against the inner side wall of the ring groove, and the outer ring of the elastic metal ring is abutted against the outer side wall of the ring groove. According to the utility model, the elastic metal ring in the ring body is arranged to support the ring body, so that the sealing effect of the outer ring of the ring body on the cylinder body is improved.

Description

Sealing ring for air cylinder

Technical Field

The utility model belongs to the field of cylinder sealing, and particularly relates to a sealing ring for a cylinder.

Background

At present, a sealing ring is often used in a cylinder structure to realize the tightness of the cylinder, prevent the high-pressure gas from being scattered outwards and prevent oil or sundries from entering the cylinder. Because the sealing ring is frequently subjected to the action of friction force, the sealing ring is worn and heavy after long-time use, once the sealing ring is not replaced in time, the tightness of the cylinder is reduced, the leakage of high-pressure gas in the cylinder is easily caused, and meanwhile, oil and other impurities easily invade the cylinder to influence the normal operation of the cylinder.

Disclosure of utility model

In view of the above, the present utility model aims to provide a seal ring for a cylinder to achieve stable and good sealing of the cylinder.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

The utility model provides a sealing washer for cylinder, includes the circle body, the circle body longitudinal section is rectangle, and the annular is seted up to the top surface of the circle body, be equipped with the elastic metal circle in the annular, the elastic metal circle includes inner circle and outer lane, the inner circle is connected with the outer lane lower border, forms the annular space that the opening up, the inside wall of elastic metal circle's inner circle butt annular, the lateral wall of its outer circle butt annular.

Further, a plurality of grooves are uniformly formed in the circumferential direction of the outer ring of the elastic metal ring, the upper ends of the grooves are open ends and extend out of the edge of the outer ring, and the lower ends of the grooves are closed ends and are positioned at the connecting positions of the inner ring and the outer ring of the elastic metal ring.

Further, a plurality of positioning protrusions are arranged outwards in the circumferential direction of the upper portion of the inner ring of the elastic metal ring, positioning grooves are formed in the inner side wall of the annular groove corresponding to the positioning protrusions, and the positioning protrusions are clamped in the corresponding positioning grooves.

Further, a convex ring is integrally formed at the top of the outer side wall of the ring groove, a slot corresponding to the outer ring of the elastic metal ring is formed at the joint of the convex ring and the outer side wall, and the top of the outer ring is inserted into the slot.

Further, the annular groove is a conical annular groove with an upward opening, wherein the inner side wall of the annular groove is vertically arranged, and the outer side wall of the annular groove is obliquely arranged.

Further, the ring body comprises a lower ring body part and an upper ring body part, the outer diameter of the upper ring body part is larger than that of the lower ring body part, and the annular groove is formed in the upper ring body part.

Further, an anti-drop ring groove is formed in the center of the inner ring of the ring body.

Compared with the prior art, the sealing ring for the air cylinder has the following advantages:

(1) According to the utility model, the elastic metal ring in the ring body is arranged to support the ring body, so that the sealing effect of the outer ring of the ring body on the cylinder body is improved.

(2) In the utility model, the outer ring of the elastic metal ring is uniformly provided with a plurality of grooves, so that the elastic metal ring is convenient to install, and the supporting performance of the elastic metal ring on the ring body is improved.

(3) In the utility model, the annular cavity of the ring body is provided with the slot and the positioning groove, the elastic metal ring is provided with the positioning bulge corresponding to the positioning groove, the positioning bulge and the positioning groove are matched and installed, the outer ring of the elastic metal ring is inserted into the slot, and the installation stability of the elastic metal ring is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 is a schematic structural view of a seal ring for a cylinder according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the ring in the present embodiment;

FIG. 3 is an enlarged view of B of FIG. 2;

FIG. 4 is a top view of the elastic metal ring in the present embodiment;

Fig. 5 is A-A view of fig. 4.

Reference numerals illustrate:

1-ring body, 11-lower ring body part, 12-upper ring body part, 13-sealing lug part, 15-anti-drop ring groove, 16-ring groove, 161-inner side wall, 162-outer side wall, 163-positioning groove, 164-slot, 165-convex ring, 2-elastic metal ring, 21-inner ring, 22-outer ring, 23-groove and 24-positioning bulge.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1, a sealing ring for a cylinder comprises a ring body 1, wherein the ring body 1 is made of rubber, and the longitudinal section of the ring body is rectangular. For convenience of description, the center line of the ring body 1 is in a vertical arrangement state, the top surface of the ring body 1 is provided with a ring groove 16, an elastic metal ring 2 is arranged in the ring groove 16, the elastic metal ring 2 supports the ring body 1, and the sealing stability of the outer ring of the ring body 1 to the cylinder is improved.

The structure of the ring body 1 is shown in fig. 2, and comprises a lower ring body 11 and an upper ring body 12 which are arranged in close proximity, wherein the outer diameter of the upper ring body 12 is larger than that of the lower ring body 11, a ring groove 16 is arranged on the upper ring body 12, a sealing lug part 13 is formed at the part, outside the ring groove 16, of the upper ring body 12, and the cylinder is sealed through the sealing lug part 13. The ring groove 16 is structured such that, as shown in fig. 3, the inner side wall 161 (side wall near the center of the ring body 1) thereof is vertically disposed, and the outer side wall 162 (side wall far from the center of the ring body) thereof is inclined such that the ring groove 16 is a tapered ring groove opening upward.

The elastic metal ring 2 is an elastic steel sheet piece or a copper sheet piece, the shape of the elastic metal ring corresponds to that of the ring groove 16, as shown in fig. 4 and 5, the elastic metal ring 2 comprises an inner ring 21 and an outer ring 22, wherein the inner ring 21 is vertically arranged, the outer ring 22 is obliquely arranged, the inner ring 21 and the outer ring 22 are connected at the lower edge, and the inner ring 21 and the outer ring 22 form an annular space with an upward opening. After installation, the inner ring 21 of the elastic metal ring 2 abuts against the inner side wall 161 of the ring groove 16, and the outer ring 22 abuts against the outer side wall 162 of the ring groove 16.

In order to facilitate the elastic metal ring 2 to be installed in the annular groove 16, a plurality of grooves 23 are uniformly formed in the circumferential direction of the outer ring 22 of the elastic metal ring 2, the upper ends of the grooves 23 are open ends and extend out of the upper edge of the outer ring 22, and the lower ends of the grooves 23 are closed ends and are positioned at the connecting positions of the inner ring 21 and the outer ring 22 of the elastic metal ring 2. The outer ring of the elastic metal ring 2 is divided into a plurality of parts by the plurality of grooves 23, the plurality of parts are connected with the inner ring 21 to form a plurality of spring plate structures, each spring plate can be deformed independently, so that the elastic metal ring 2 is conveniently arranged in the annular groove 16, the formed plurality of spring plates simultaneously support the annular groove 16, the supporting effect of the elastic metal ring 2 on the upper ring body 12 is improved, and the sealing stability and the sealing effect of the upper ring body 12 on the cylinder are further improved.

Further, in order to improve the installation stability of the elastic metal ring 2, a plurality of positioning protrusions 24 are provided on the upper portion of the inner ring 21 of the elastic metal ring 2 in the circumferential direction outwards (towards the center direction of the elastic metal ring), positioning grooves 163 are provided on the inner side wall 161 of the ring groove 16 corresponding to the positioning protrusions 24, and the positioning protrusions 24 are clamped in the corresponding positioning grooves 163. Meanwhile, a convex ring 165 is integrally formed at the top of the outer side wall 162 of the ring groove 16, a slot 164 corresponding to the outer ring 22 of the elastic metal ring 2 is formed at the bottom of the joint of the convex ring 165 and the outer side wall 162, and the top of the outer ring 22 is inserted into the slot 164. This structure improves the stability of the installation of the elastic metal ring 2, preventing it from falling off from the ring groove 16.

In the utility model, the center of the inner ring of the ring body 1 is provided with the anti-drop ring groove 15, and the clamping convex rings on the cylinder shaft are matched and assembled to prevent the ring body 1 from sliding on the cylinder shaft, so that the cylinder body is well sealed.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (7)

1. The sealing ring for the cylinder is characterized by comprising a ring body (1), wherein the longitudinal section of the ring body (1) is rectangular, a ring groove (16) is formed in the top surface of the ring body (1), an elastic metal ring (2) is arranged in the ring groove (16), the elastic metal ring (2) comprises an inner ring (21) and an outer ring (22), the lower edges of the inner ring (21) and the outer ring (22) are connected to form an annular space with an upward opening, the inner ring (21) of the elastic metal ring (2) is abutted against the inner side wall (161) of the ring groove (16), and the outer ring (22) is abutted against the outer side wall (162) of the ring groove (16).

2. The sealing ring for the cylinder according to claim 1, wherein a plurality of grooves (23) are uniformly formed in the circumferential direction of the outer ring (22) of the elastic metal ring (2), the upper ends of the grooves (23) are open ends and extend out of the upper edge of the outer ring (22), and the lower ends of the grooves (23) are closed ends and are positioned at the connecting positions of the inner ring (21) and the outer ring (22) of the elastic metal ring (2).

3. The gasket for a cylinder according to claim 1, wherein a plurality of positioning protrusions (24) are provided in the circumferential direction of the upper portion of the inner ring (21) of the elastic metal ring (2), positioning grooves (163) are provided in the inner side wall (161) of the ring groove (16) corresponding to the positioning protrusions (24), and the positioning protrusions (24) are fitted into the corresponding positioning grooves (163).

4. A sealing ring for a cylinder as set forth in claim 3, wherein a convex ring (165) is integrally formed at the top of the outer side wall (162) of the ring groove (16), a slot (164) corresponding to the outer ring (22) of the elastic metal ring (2) is formed at the joint of the convex ring (165) and the outer side wall (162), and the top of the outer ring (22) is inserted into the slot (164).

5. A seal ring for a cylinder according to claim 1, wherein the ring groove (16) is a tapered ring groove with an opening upward, wherein an inner side wall (161) of the ring groove (16) is vertically arranged, and an outer side wall (162) thereof is obliquely arranged.

6. The sealing ring for a cylinder according to claim 1, wherein the ring body (1) comprises a lower ring body (11) and an upper ring body (12), the outer diameter of the upper ring body (12) is larger than the outer diameter of the lower ring body (11), and the ring groove (16) is arranged on the upper ring body (12).

7. The sealing ring for the air cylinder according to claim 1, wherein the center of the inner ring of the ring body (1) is provided with an anti-falling ring groove (15).