Flanging type floating movable ring device

Abstract

The utility model relates to the field of mechanical sealing, in particular to a flanging type floating mounting moving ring device which comprises a moving ring seat and a moving ring piece, a moving ring mounting groove is formed in the moving ring seat, the moving ring piece is arranged in the moving ring mounting groove, an annular sealing piece is arranged in the moving ring mounting groove, and an inner ring of the annular sealing piece is arranged on the moving ring piece in a sleeving mode. The outer ring of the annular sealing piece abuts against the inner wall of the movable ring installation groove. And a limiting piece for limiting the axial movement of the brake ring sheet is arranged at the outer end of the movable ring mounting groove. Sealing between the moving ring seat and the moving ring piece is achieved through deformation compression of the annular sealing piece, transmission between the moving ring seat and the annular sealing piece and transmission between the moving ring seat and the moving ring piece are achieved through friction force, and therefore clearance fit between the moving ring seat and the moving ring piece is achieved. The problems that the friction surface is deformed and the flatness of the friction surface cannot meet the use requirement due to the interference stress of the movable ring seat on the movable ring sheet in an old structure are solved; the sealing performance of the moving ring can be well met.

Description

Technical Field

[0001] The utility model relates to the field of mechanical seals, in particular to a flanged floating dynamic ring device. Background Art

[0002] In the process of using the conventional dynamic ring device, the sealing and anti-rotation between the dynamic ring seat and the dynamic ring piece are generally achieved through the interference fit of hot inlay of the mating dimensions between the dynamic ring seat and the dynamic ring piece (as shown at A in Figure 1 ). Because there is interference stress between the two components, the dynamic ring piece will be deformed, and then the flatness of the sealing surface will be deformed during the release of the interference stress, which often affects the use of the dynamic ring device and the sealing performance of the dynamic ring device. Summary of the Utility Model

[0003] Based on the above problems, the purpose of the utility model is to provide a flanged floating dynamic ring device. The utility model adopts the following technical solutions:

[0004] The utility model provides a flanged floating dynamic ring device, which includes a dynamic ring seat and a dynamic ring piece. A dynamic ring installation groove is arranged on the dynamic ring seat. The dynamic ring piece is arranged in the dynamic ring installation groove. An annular seal is arranged in the dynamic ring installation groove. The inner ring of the annular seal is sleeved on the dynamic ring piece, and the outer ring of the annular seal abuts against the inner wall of the dynamic ring installation groove. A limiting member for restricting the axial movement of the dynamic ring piece is arranged at the outer end of the dynamic ring installation groove, and the limiting member abuts against the dynamic ring piece.

[0005] Preferably, the annular seal is an O-ring.

[0006] Preferably, the limiting member is an annular baffle, and the outer ring of the annular baffle is integrally formed on the dynamic ring seat.

[0007] Preferably, a limiting step for pressing and cooperating with the limiting member is arranged on the outer wall of the dynamic ring piece.

[0008] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0009] In the utility model, the seal between the dynamic ring seat and the dynamic ring piece is realized through the deformation and compression of the annular seal, and the transmission between the dynamic ring seat, the annular seal and the dynamic ring piece is realized through friction force, so that a clearance fit is achieved between the dynamic ring seat and the dynamic ring piece, avoiding the problem that the friction surface of the dynamic ring piece is deformed due to the interference stress of the dynamic ring seat in the old structure, and the flatness of the friction surface does not meet the use requirements. The utility model can well meet the dynamic ring sealing performance. Brief Description of the Drawings

[0010] The following is a further description of the utility model with reference to the drawings.

[0011] Figure 1 is a structural schematic diagram of an existing moving ring device;

[0012] Figure 2 is a structural schematic diagram of the flanging type floating moving ring device of the present utility model;

[0013] Figure 3 is a structural schematic diagram of the moving ring piece of the present utility model;

[0014] Figure 4 is a structural schematic diagram of the moving ring seat of the present utility model;

[0015] Figure 5 is an installation and use schematic diagram of the flanging type floating moving ring device of the present utility model.

[0016] Explanation of reference numerals: 1. Moving ring seat; 2. Moving ring piece; 3. Moving ring installation groove; 4. Annular seal; 5. Limiting member; 6. Limiting step. Detailed implementation manners

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] As Figures 2 to 5 shown, in this embodiment, a flanging type floating moving ring device is disclosed, which includes a moving ring seat 1 and a moving ring piece 2. A moving ring installation groove 3 is provided on the moving ring seat 1, and the moving ring piece 2 is arranged in the moving ring installation groove 3.

[0019] There is a clearance fit between the moving ring seat 1 and the moving ring piece 2, without interference stress. An annular seal 4 is arranged in the moving ring installation groove 3. The inner ring of the annular seal 4 is sleeved on the moving ring piece 2, and the outer ring of the annular seal 4 abuts against the inner wall of the moving ring installation groove 3; specifically, the radial seal between the moving ring seat 1 and the moving ring piece 2 is realized through the deformation and compression of the annular seal 4, that is, the annular seal 4 is a perfect circle in its initial state. When installed in the clearance between the moving ring seat 1 and the moving ring piece 2, the radial dimension between the moving ring seat 1 and the moving ring piece 2 is smaller than the diameter dimension of the annular seal 4, causing the annular seal 4 to deform radially and achieve an interference fit with the moving ring seat 1 and the moving ring piece 2, playing a sealing role. The transmission between the moving ring seat 1 and the moving ring piece 2 is achieved through the deformation and compression of the annular seal 4, so that there is a frictional force between the moving ring seat 1 and the annular seal 4, and at the same time, there is a frictional force between the annular seal 4 and the moving ring piece 2. When the moving ring seat 1 rotates, it drives the annular seal 4 to rotate through the frictional force, and the annular seal 4 drives the moving ring piece 2 to rotate through the frictional force, thus realizing the simultaneous rotation of the moving ring seat 1, the moving ring piece 2 and the annular seal 4.

[0020] A limiting member 5 for restricting the axial movement of the moving ring piece 2 is provided at the outer end of the moving ring installation groove 3, and the limiting member 5 abuts against the moving ring piece 2. Through the limiting action of the limiting member 5, there is no axial crosstalk between the moving ring seat 1, the moving ring piece 2, and the annular seal 4, and they are used as an integral component.

[0021] In this embodiment, the annular seal 4 can specifically be an O-ring.

[0022] In this embodiment, the limiting member 5 is an annular baffle, and the outer ring of the annular baffle is integrally formed on the moving ring seat 1. As Figure 4 described, in the initial state, the annular baffle is a radially thin wall part with a V-shaped groove having an inner angle of C, an outer diameter of D, and an extended length of E. When the moving ring piece 2 and the annular seal 4 are installed in the inner diameter of the moving ring seat 1, the radially thin wall part with a length of E on the right side of the moving ring seat 1 is bent inward to make it fit with the moving ring piece 2 (as Figure 2 and 5 shown). When the radially thin wall part with a length of E is bent to the Figure 2 , 5 position shown, the moving ring seat 1, the moving ring piece 2, and the annular seal 4 form an integral body, and the axial positions of the moving ring seat 1, the moving ring piece 2, and the annular seal 4 are relatively fixed and cannot crosstalk axially.

[0023] In this embodiment, a limiting step 6 for pressing and cooperating with the limiting member 5 is provided on the outer wall of the moving ring piece 2.

[0024] Compared with the structure of the previous old moving ring device, the seal between the moving ring seat 1 and the moving ring piece 2 is achieved through the deformation and compression of the annular seal 4, and the transmission between the moving ring seat 1, the annular seal 4, and the moving ring piece 2 is achieved through friction force, so that a clearance fit is achieved between the moving ring seat 1 and the moving ring piece 2, avoiding the problem that the friction surface of the moving ring piece 2 in the old structure is deformed due to the interference stress of the moving ring seat 1 and the flatness of the friction surface does not meet the use requirements.

[0025] In addition to the embodiment, the material of the annular seal 4 can have various selections according to the application scenario, so that the present utility model can be applied to various fluid application scenarios, and has a wider application range than the old moving ring device, adding a new direction to the scenario of mechanical seal design.

[0026] The above-described embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model should fall within the protection scope determined by the claims of the present utility model.

Claims

1. A flanging type floating dynamic ring device, comprising a dynamic ring seat (1) and a dynamic ring piece (2), wherein a dynamic ring mounting groove (3) is arranged on the dynamic ring seat (1), and the dynamic ring piece (2) is arranged in the dynamic ring mounting groove (3), characterized in that: An annular seal (4) is arranged in the dynamic ring installation groove (3), the inner ring of the annular seal (4) is sleeved on the dynamic ring sheet (2), and the outer ring of the annular seal (4) abuts against the inner wall of the dynamic ring installation groove (3); The outer end of the dynamic ring installation groove (3) is provided with a limiting member (5) for limiting the axial movement of the dynamic ring piece (2), and the limiting member (5) abuts against the dynamic ring piece (2); The limiting member (5) is an annular baffle, and the outer ring of the annular baffle is integrally formed on the dynamic ring seat (1); A limiting step (6) is provided on the outer wall of the moving ring piece (2) and is pressed and matched with the limiting member (5).

2. The flanged floating dynamic ring device according to claim 1, characterized in that: The annular sealing member (4) is an O-ring.

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