CN219827900U

CN219827900U - Sealing ring, mechanical sealing device, actuating mechanism and mechanical equipment

Info

Publication number: CN219827900U
Application number: CN202320728902.1U
Authority: CN
Inventors: 孙娓荣
Original assignee: Hebei Wolang Dynamo Electric Equipment Co ltd
Current assignee: Hebei Wolang Dynamo Electric Equipment Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-10-13
Anticipated expiration: 2033-04-04

Abstract

The utility model provides a sealing ring, a mechanical sealing device, an actuating mechanism and mechanical equipment, wherein the sealing ring comprises a sealing ring body, the sealing ring body is an annular ring, and in a state that the sealing ring body is positioned in a gap between a first sealing piece and a second sealing piece and seals the first sealing piece and the second sealing piece, the sealing ring body is provided with a sealing groove, and the sealing groove is provided with a sealing groove: the inner peripheral surface of the sealing ring body is tightly attached to the first sealing piece; the axial section of the sealing ring body is rectangular, the outer peripheral surface of the sealing ring body is provided with a convex ring, and the convex ring is clung to the surface of the second sealing piece, which is close to one side of the first sealing piece; a sealing groove is formed between adjacent convex rings. The integrated sealing ring structure is adopted, so that the flanging deformation of the split sealing structure is avoided when the first sealing piece is frequently opened and closed relative to the second sealing piece, and the sealing effect is improved. The outer peripheral surface of the sealing ring body is provided with a convex ring, a sealing groove is formed between every two adjacent convex rings, and the convex rings are clung to the surface of the second sealing piece, which is close to one side of the first sealing piece, so that medium leakage is prevented.

Description

Sealing ring, mechanical sealing device, actuating mechanism and mechanical equipment

Technical Field

The utility model relates to the technical field of sealing rings, in particular to a sealing ring, a mechanical sealing device, an actuating mechanism and mechanical equipment.

Background

The sealing treatment is needed among many sealing elements, and the common sealing treatment mode is to seal by adopting a sealing ring. If the medium at the sealing parts is liquid, and the sealing parts in sealing connection with each other may have a condition that frequent opening and closing are needed, the sealing rings are extruded and deformed, and the like, so that the leakage of the medium from the position where the sealing rings are arranged is caused. In the related art, an outer slip ring with material hardness higher than that of the sealing ring is sleeved outside the sealing ring, but the problem of medium leakage caused by flanging deformation of the outer slip ring still exists in the split sealing structure under the condition that the sealing member is frequently opened and closed in the specific use process.

Disclosure of Invention

The embodiment of the utility model aims to provide a sealing ring, a mechanical sealing device, an actuating mechanism and mechanical equipment, which are used for solving the problem of medium leakage of a split sealing ring in the related art.

The embodiment of the utility model adopts the following technical scheme: the utility model provides a sealing washer, includes the sealing washer body, the sealing washer body is the annular ring the sealing washer body is located the gap between first sealing member and the second sealing member, under the state of sealed first sealing member and second sealing member:

the inner peripheral surface of the sealing ring body is tightly attached to the first sealing piece; the axial section of the sealing ring body is rectangular, a raised ring is arranged on the outer peripheral surface of the sealing ring body, and the raised ring is clung to the surface of the second sealing piece, which is close to one side of the first sealing piece;

a sealing groove is formed between adjacent convex rings.

In some embodiments, in the two end planes perpendicular to the axial direction of the seal ring body, at least one end plane is formed with a groove structure for maintaining the compression amount of the seal ring body.

In some embodiments, the groove structure is a point groove uniformly arranged on the end plane or an annular groove around the circumference of the sealing ring body.

In some embodiments, the channel structure is shaped into at least one of the following channels:

a semicircular arc groove is formed in the section along the axial direction of the sealing ring body;

a groove with a rectangular section along the axial direction of the sealing ring body;

the section is a special-shaped groove along the axial direction of the sealing ring body.

A mechanical sealing device comprises the sealing ring, a first sealing piece and a second sealing piece.

In some embodiments, the mechanical seal is a control valve, the first seal is a piston, the second seal is a cylinder, the piston is located in the cylinder, and the piston is configured to have a movement motion relative to the cylinder along an axial direction of the seal ring.

In some embodiments, the piston is provided with a sealing groove matched with the sealing ring, the sealing ring is installed in the sealing groove, and the bulge of the sealing ring is clung to the surface of the cylinder body, which is close to one side of the piston.

In some embodiments, one end plane of the sealing ring body is clung to one side groove wall of the sealing groove, a sealing ring retainer ring is further installed in the sealing groove, one end of the sealing ring retainer ring is clung to the other end plane of the sealing ring body, and the other end of the sealing ring retainer ring is clung to the other side groove wall of the sealing groove.

An actuator comprises at least the mechanical sealing device.

A mechanical device at least comprises the actuating mechanism, wherein the actuating mechanism is a driving head.

The embodiment of the utility model has the beneficial effects that:

the integrated sealing ring structure is adopted to seal the first sealing piece and the second sealing piece, so that the flanging deformation of the split sealing structure when the first sealing piece is frequently opened and closed relative to the second sealing piece is avoided, and the sealing effect is improved. In addition, the sealing ring body with the rectangular axial section is adopted, so that the sealing area of the outer peripheral surface of the sealing ring body between the first sealing piece and the second sealing piece is increased, and the sealing effect is improved. Moreover, set up protruding ring at the outer peripheral face of sealing washer body, be formed with the seal groove between the adjacent protruding ring, hug closely in the surface of second sealing member near first sealing member one side through protruding ring, cooperate seal groove structure, prevent that the medium from leaking between first sealing member and the second sealing member.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings can be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of the connection relationship among a seal ring, a first seal member and a second seal member according to the present utility model;

FIG. 2 is a schematic axial cross-sectional view of a seal ring according to the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2A in accordance with the present utility model;

FIG. 4 is a schematic view of an O-ring and an outer slip ring in the related art;

FIG. 5 is a schematic diagram of a related art piston and cylinder employing O-ring seal and outer slip ring seal (piston outside cylinder);

FIG. 6 is a schematic diagram of a related art piston and cylinder employing O-ring seal and outer slip ring seal (when the piston is installed in the cylinder);

FIG. 7 is an enlarged view of a portion of B in FIG. 6;

FIG. 8 is a schematic diagram of a piston and cylinder of the present utility model sealed with a seal ring (the piston is located in the cylinder);

FIG. 9 is a schematic diagram of a piston and cylinder of the present utility model sealed by a seal ring (the piston is located outside the cylinder);

fig. 10 is a schematic view of the piston of the present utility model (with parts of the seal ring and the seal ring retainer omitted).

Reference numerals: the sealing ring comprises a sealing ring 1, a first sealing piece 2, a second sealing piece 3, a protruding ring 4, a sealing groove 5, a medium 6, a 7-end plane, an 8-groove structure, a sealing ring 9O-shaped, an external slip ring 10, a piston 11, a cylinder body 12, an end face opening 121, a sealing groove 13 and a sealing ring retainer ring 14.

Detailed Description

Various aspects and features of the present utility model are described herein with reference to the accompanying drawings.

It should be understood that various modifications may be made to the embodiments of the application herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of the utility model will occur to persons of ordinary skill in the art.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and, together with a general description of the utility model given above, and the detailed description of the embodiments given below, serve to explain the principles of the utility model.

These and other characteristics of the utility model will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.

It is also to be understood that, although the utility model has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the utility model, having the characteristics as set forth in the foregoing summary of the utility model and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present utility model will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the utility model, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the utility model in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely as a basis for the "summary of the utility model" and as a representative basis for teaching one skilled in the art to variously employ the present utility model in virtually any appropriately detailed structure.

The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the utility model.

In order to solve the problems in the background art, the utility model discloses a sealing ring 1.

The sealing ring 1 is integrated with figures 1, 2 and 3, and comprises a sealing ring body, the first sealing member 2 and the second sealing member 3 are sealed by adopting an integrated sealing ring 1 structure, so that the flanging deformation of the split type sealing structure when the first sealing member 2 is frequently opened and closed relative to the second sealing member 3 is avoided, and the sealing effect is improved. The sealing ring body is an annular ring, and can be designed into structural forms such as an O-shaped ring, a rectangular ring and the like according to specific use occasions.

In a state where the seal ring body is positioned in a gap between the first seal member 2 and the second seal member 3 and seals the first seal member 2 and the second seal member 3:

the inner peripheral surface of the sealing ring body is tightly attached to the first sealing member 2, namely, the annular ring-shaped sealing ring body is sleeved on the first sealing member 2. The axial cross section of the sealing ring body is designed into a rectangle, and the sealing area of the outer peripheral surface of the sealing ring body between the first sealing piece 2 and the second sealing piece 3 is increased, so that the sealing effect is improved. As shown in fig. 3, the outer peripheral surface of the seal ring body is provided with a protruding ring 4 protruding outwards from the surface of the outer peripheral surface, a seal groove 5 is formed between adjacent protruding rings 4, and the protruding ring 4 is tightly attached to the surface of the second seal member 3 on the side close to the first seal member 2. The outer peripheral surface of the sealing ring body is provided with the bulge loops 4, a sealing groove 5 is formed between every two adjacent bulge loops 4, the bulge loops 4 are clung to the surface of the second sealing piece 3, which is close to one side of the first sealing piece 2, and the sealing groove 5 is matched with the structure to prevent the medium 6 from leaking between the first sealing piece 2 and the second sealing piece 3.

In addition, the seal ring 1 may be made of a material corresponding to a specific use field Jing Xuanqu, for example, if the seal ring is made of a material resistant to high temperature and resistant to swelling in a high-temperature use environment.

In some embodiments, again with reference to fig. 3, of the two end planes 7 perpendicular to the axial direction of the seal ring body, at least one end plane 7 is formed with a groove-type structure 8 for maintaining the compression of the seal ring body. That is, the seal ring 1 is a columnar annular ring having a certain height, the top surface and the bottom surface of the columnar annular ring are flat surfaces, and when the relative position of the first seal member 2 and the second seal member 3 is changed in a specific use process, the seal ring body is subjected to the force in the axial direction, and the seal ring body is extruded in the axial direction, so that the seal ring body is compressed. In order to improve the sealing effect of the sealing ring 1 in the use process, a groove structure 8 for keeping the compression amount of the sealing ring body is arranged on one end plane 7 or two end planes 7 of the sealing ring body.

In some embodiments, for the specific design form of the groove-shaped structure 8, the groove-shaped structure 8 may be a point groove uniformly arranged on the end plane 7 or an annular groove around the circumference of the seal ring body. Whereas the groove-shaped structure 8 for the above-mentioned spot groove or annular groove is shaped into at least one of the following groove shapes:

first, along the axial of sealing washer body, the cross-section is half circular arc recess, and the point groove is hemisphere hole form promptly, and the annular groove is the recess of cross-section for half circular arc.

And secondly, along the axial direction of the sealing ring body, the cross section of the sealing ring body is a rectangular groove, namely, the point groove is in a rectangular blind hole shape, and the annular groove is a groove with a rectangular cross section.

Thirdly, along the axial direction of the sealing ring body, the cross section is a special-shaped groove, namely, the point groove is a special-shaped blind hole, and the annular groove is a special-shaped groove.

Of course, the specific structure of the groove structure 8 is also completely limited to the above structure, and the groove structure 8 may be designed according to various aspects such as difficulty in processing and design, cost, and the like.

In addition, in a PSA (Pressure Swing Adsorption: pressure swing adsorption) apparatus, a programmable valve is a core component for sequential control of the PSA apparatus, and is directly related to the purity and yield of a hydrogen product. The hydraulic driving head is used for providing power for the program-controlled valve of the device, and the purpose of using the hydraulic system is to further improve the running stability, reliability and service life of the program-controlled valve of the device, provide a reliable valve opening speed adjusting function, control the speed of the equalizing air flow, reduce the noise of the device and protect the adsorbent. However, in the production process, oil leakage often occurs, once the oil is not timely treated, more leakage occurs, so that the production cost is increased, the field management is troublesome, the service life of the valve is reduced, and once the oil is not timely added, the piston 11 in the hydraulic cylinder is worn out of the cylinder body 12, so that the production problem is caused. The above-mentioned problems are also present for some other valves.

In combination with fig. 4, 5, 6 and 7, the sealing used by the piston 11 of the conventional program-controlled valve is composed of an O-ring 9 and an outer slip ring 10, the assembly is easy to cause problems, the effective sealing time is short by only half a year, and oil leakage is easy to cause. The outer slip ring 10 is made of a hard material, and the outer side surface of the outer slip ring contacts with the cylinder wall of the cylinder body 12, so that the outer slip ring cannot perform a good sealing function and is easy to scratch the cylinder wall. The existing O-shaped sealing ring 9 has a plurality of times of opening and closing movements along with a program control valve, particularly when the piston 11 is installed in the cylinder body 12, the piston 11 moves into the cylinder body 12, a force is generated between the outer sliding ring 10 and the end face opening 121 of the cylinder body 12, and the outer sliding ring 10 is deformed or shifted in a flanging way, so that the O-shaped sealing ring 9 is disabled. The direction of the arrow in the figure is the direction of movement of the piston. The above is a disadvantage of the existing sealing structure, and finally, the service life of the program control valve is short and the medium 6 is easy to leak.

Based on the above problems, in combination with the sealing ring 1 disclosed by the utility model, the utility model also discloses a mechanical sealing device, which comprises the sealing ring 1, a first sealing element 2 and a second sealing element 3.

In some embodiments, referring to fig. 8 and 9, the mechanical sealing device is a control valve, the first sealing member 2 is a piston 11, the second sealing member 3 is a cylinder 12, and the first sealing member 2 and the second sealing member 3 together with necessary structural components form the program control valve (i.e. one of the control valves). The piston 11 is located in the cylinder 12, and the piston 11 is configured to move axially relative to the cylinder 12 along the seal ring 1.

As shown in fig. 10, the piston 11 is provided with a sealing groove 13 matched with the sealing ring 1, the sealing groove 13 is an annular groove, the sealing ring 1 is installed on the sealing groove 13, and the bulge of the sealing ring 1 is tightly attached to the surface of the cylinder 12, which is close to one side of the piston 11, so as to realize the sealing of the program-controlled valve. Along the axial direction of the piston 11, two wall surfaces of the seal groove 13 perpendicular to the axial direction of the piston 11 are side groove walls thereof.

In addition, in some embodiments, one end plane 7 of the seal ring body is in close proximity to one side groove wall of the seal groove 13; an annular sealing ring retainer ring 14 is also arranged in the sealing groove 13, one end of the sealing ring retainer ring 14 is clung to the other end plane 7 of the sealing ring body, and the other end of the sealing ring retainer ring 14 is clung to the other side groove wall of the sealing groove 13. The sealing ring retainer ring 14 plays a role in guiding and occupying the piston 11, wherein the occupying position is that the sealing ring retainer ring 14 butts against the sealing ring 1 in the sealing groove 13.

The utility model also discloses an actuating mechanism which at least comprises the mechanical sealing device.

The utility model also discloses a mechanical device which at least comprises the actuating mechanism, wherein the actuating mechanism is a driving head.

While various embodiments of the present utility model have been described in detail, the present utility model is not limited to these specific embodiments, and various modifications and embodiments can be made by those skilled in the art on the basis of the inventive concept, and these modifications and modifications should be included in the scope of the claimed utility model.

Claims

1. The utility model provides a sealing washer, its characterized in that includes the sealing washer body, the sealing washer body is the annular ring the sealing washer body is located the gap between first sealing member and the second sealing member, under the state of sealing first sealing member and the second sealing member:

a sealing groove is formed between adjacent convex rings.

2. A seal ring according to claim 1, wherein in both end planes perpendicular to the axial direction of the seal ring body, at least one of the end planes is formed with a groove-type structure for retaining the compression amount of the seal ring body.

3. A sealing ring according to claim 2, wherein the groove structure is a point groove uniformly provided on the end plane or an annular groove surrounding the circumference of the sealing ring body.

4. A seal ring according to claim 3, wherein the groove-shaped structure is shaped as at least one of the following groove-shaped structures:

5. A mechanical seal comprising a seal ring according to any one of claims 1 to 4 and first and second seals.

6. The mechanical seal of claim 5, wherein the mechanical seal is a control valve, the first seal is a piston, the second seal is a cylinder, the piston is located within the cylinder, and the piston is configured to have a movement relative to the cylinder in an axial direction of the seal ring.

7. The mechanical seal according to claim 6, wherein the piston is provided with a sealing groove adapted to the sealing ring, the sealing ring is mounted in the sealing groove, and the protrusion of the sealing ring is tightly attached to the surface of the cylinder body on the side close to the piston.

8. The mechanical seal device according to claim 7, wherein one end plane of the seal ring body is tightly attached to one side groove wall of the seal groove, a seal ring retainer ring is further installed in the seal groove, one end of the seal ring retainer ring is tightly attached to the other end plane of the seal ring body, and the other end of the seal ring retainer ring is tightly attached to the other side groove wall of the seal groove.

9. An actuator comprising at least a mechanical seal according to any one of claims 5 to 8.

10. A mechanical device comprising at least the actuator of claim 9, said actuator being a drive head.