Corrosion-resistant mechanical sealing device

Abstract

The utility model discloses a corrosion-resistant mechanical sealing device, and belongs to the field of mechanical sealing. A corrosion-resistant mechanical sealing device comprises an installation base and a transmission shaft body penetrating through the installation base, the outer side of the transmission shaft body is sleeved with a movable ring, one end of the movable ring is provided with a first pressing plate through a first spring, one end of the installation base is provided with a sleeve, a containing cavity is formed in the installation base, and a static ring sealing ring is installed in the containing cavity; a first mounting plate is arranged at the other end of the mounting base, a second mounting plate is mounted on one side of the first mounting plate and connected with the first mounting plate through bolts, and a limiting base is arranged on the side, facing the static ring sealing ring, of the second mounting plate; through the arrangement of the second mounting plate, after the second mounting plate is mounted, the outer side of the static ring sealing ring is extruded and limited through the limiting seat, stability of the static ring sealing ring during rotation is effectively kept, deformation of the static ring sealing ring is reduced, and the service life of the static ring sealing ring is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a corrosion-resistant mechanical seal device. Background Technology

[0002] The working principle of a mechanical seal is that the two end faces of the rotating ring and the stationary ring maintain close contact and slide relative to each other under the action of fluid pressure and the elastic force of the compensation mechanism, thereby preventing fluid leakage. When liquid enters the sealing cavity, it forms a thin liquid film between the rotating ring and the stationary ring. This liquid film can reduce friction and prevent leakage.

[0003] A search revealed a Chinese patent application with patent number 202420522015.3, which discloses a mechanical seal device. The device includes a stationary ring disposed within the equipment housing and through which a shaft can pass, and a rotating ring surrounding the shaft and fixedly connected to its outer wall. A gap exists between the stationary ring and the shaft. The rotating ring has a receiving groove on its end face, within which a sealing ring and multiple elastic elements are disposed to push the top of the sealing ring out of the receiving groove and maintain constant contact with the end face of the stationary ring. This invention ensures the sealing effect of the sealing device and improves its service life.

[0004] While the aforementioned patents can ensure the sealing effect of the sealing device and improve its service life, when the rotating ring and stationary ring seals rotate relative to each other during rotation, the stationary ring seals are prone to deformation under the action of friction, resulting in a decrease in their sealing effect and service life.

[0005] Therefore, corrosion-resistant mechanical seals are urgently needed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve the problem in the prior art that the stationary ring seal is easily deformed when the rotating ring and stationary ring rotate relative to each other, and to propose a corrosion-resistant mechanical seal device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A corrosion-resistant mechanical seal device includes a mounting base and a drive shaft passing through the mounting base. A rotating ring is sleeved on the outer side of the drive shaft. One end of the rotating ring is mounted with a first pressure plate via a first spring. One end of the mounting base is provided with a sleeve. The mounting base has an internal receiving cavity in which a stationary ring seal is installed. The other end of the mounting base is provided with a first mounting plate. A second mounting plate is mounted on one side of the first mounting plate. The second mounting plate is connected to the first mounting plate by bolts. A limiting seat is provided on the side of the second mounting plate facing the stationary ring seal.

[0009] As a preferred technical solution of this application, a dynamic ring sealing ring is sleeved on the outer side of the dynamic ring.

[0010] As a preferred technical solution of this application, both the first pressure plate and the first spring are sleeved on the shaft.

[0011] As a preferred technical solution of this application, the receiving cavity inside the mounting base is provided with a receiving groove, and the receiving groove is provided with a ring-shaped installation groove, and a second pressure plate is installed in the receiving groove.

[0012] As a preferred technical solution of this application, the second pressure plate is provided with a plurality of second springs arranged in a ring on the side facing the receiving groove, and the outer end of the second spring is provided with a seat plate, and the second spring and the seat plate are located in the mounting groove.

[0013] As a preferred technical solution of this application, the receiving groove is annular.

[0014] Compared with the prior art, this utility model provides a corrosion-resistant mechanical seal device, which has the following beneficial effects:

[0015] 1. This corrosion-resistant mechanical seal device, through the setting of a second mounting plate and a limiting seat located on one side of the second mounting plate, achieves compression and limiting of the outer side of the stationary ring seal by the limiting seat after the second mounting plate is installed, effectively maintaining the stability of the stationary ring seal during rotation, reducing the deformation of the stationary ring seal, improving its service life, and solving the problem in the prior art that the stationary ring seal is easily deformed when the rotating ring and the stationary ring rotate relative to each other;

[0016] 2. This corrosion-resistant mechanical seal device, through the second pressure plate connected to the second spring, achieves contact between the second pressure plate and the stationary ring seal under the action of the spring, and generates pressure on it, maintaining its stability during use, thus solving the problem of easy movement of the stationary ring seal during use in the prior art. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the dynamic ring structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the static ring sealing ring installation structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting base structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the second mounting plate structure of this utility model.

[0022] In the picture:

[0023] 1. Drive shaft; 2. Sleeve; 3. Mounting base; 4. First mounting plate; 5. Second mounting plate; 6. First spring; 7. First pressure plate; 8. Moving ring; 9. Moving ring seal; 10. Second pressure plate; 11. Stationary ring seal; 12. Bolt; 13. Second spring; 14. Seat plate; 15. Receiving groove; 16. Mounting groove; 17. Limiting seat. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0025] Reference Figures 1-5 A corrosion-resistant mechanical seal device includes a mounting base 3 and a drive shaft 1 passing through the mounting base 3. A rotating ring 8 is sleeved on the outer side of the drive shaft 1. The drive shaft 1 drives the rotating ring 8 to rotate relative to the mounting base 3. One end of the rotating ring 8 is mounted with a first pressure plate 7 via a first spring 6. The first spring 6 can compensate for the wear of the friction surface and reduce leakage during use. Both the first pressure plate 7 and the first spring 6 are sleeved on the shaft 1.

[0026] One end of the mounting base 3 is provided with a sleeve 2. The interior of the mounting base 3 has a receiving cavity, in which a stationary ring sealing ring 11 is installed. The stationary ring sealing ring 11 contacts the rotating ring 8 to achieve a sealing effect. The receiving cavity inside the mounting base 3 has a receiving groove 15, which is annular. The receiving groove 15 has a ring-shaped installation groove 16. A second pressure plate 10 is installed in the receiving groove 15. On the side of the second pressure plate 10 facing the receiving groove 15, there are multiple ring-shaped second springs 13. The outer end of the second spring 13 is provided with a seat plate 14. During installation, the second spring 13 and the seat plate 14 are located in the installation groove 16. During operation, the second spring 13 can exert pressure on the stationary ring sealing ring 11 under the action of the second spring 13, pressurizing the stationary ring sealing ring 11 from the side, making the contact between the stationary ring sealing ring 11 and the rotating ring 8 more stable and improving the sealing effect.

[0027] A rotating ring seal 9 is fitted on the outer side of the rotating ring 8. When the rotating ring 8 is inserted into the receiving cavity, the rotating ring seal 9 can improve the sealing performance of the connection between the rotating ring 8 and the receiving cavity. The rotating ring seal 9 is elastic and can also play a good sealing role when the rotating ring 8 rotates, further reducing leakage.

[0028] Reference Figure 3 and Figure 5 Furthermore, the other end of the mounting base 3 is provided with a first mounting plate 4, and a second mounting plate 5 is installed on one side of the first mounting plate 4. The second mounting plate 5 is connected to the first mounting plate 4 by bolts 12, which facilitates disassembly and installation. The side of the second mounting plate 5 facing the stationary ring seal 11 is provided with a limiting seat 17. After installation, the limiting seat 17 compresses the outer edge of the stationary ring seal 11 located inside the mounting base 3 to fix the stationary ring seal 11. During use, it can maintain the stability of the stationary ring seal 11 under the rotation of the rotating ring and improve the service life of the stationary ring seal 11.

[0029] Specifically, during operation / use, the rotating ring 8 rotates under the drive of the transmission shaft 1 and forms a sealing structure with the stationary ring seal 11 located in the cavity of the mounting base 3. During rotation, the first spring 6 compensates for the wear of the friction surface. At the same time, with the help of the second mounting plate 5 and the limiting seat 17 installed inside the second mounting plate 5, the stationary ring seal 11 is prevented from rotating when the rotating ring 8 rotates, thus maintaining the stability of the stationary ring seal 11 during use.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant mechanical seal device, comprising a mounting base (3) and a drive shaft (1) passing through said mounting base (3), characterized in that, A rotating ring (8) is sleeved on the outside of the transmission shaft (1). One end of the rotating ring (8) is fitted with a first pressure plate (7) via a first spring (6). One end of the mounting base (3) is provided with a sleeve (2). The mounting base (3) has an internal cavity for receiving. A stationary ring seal (11) is installed in the cavity. The other end of the mounting base (3) is provided with a first mounting plate (4). A second mounting plate (5) is installed on one side of the first mounting plate (4). The second mounting plate (5) is connected to the first mounting plate (4) by bolts (12). A limiting seat (17) is provided on the side of the second mounting plate (5) facing the stationary ring seal (11).

2. The corrosion-resistant mechanical seal device according to claim 1, characterized in that, The outer side of the moving ring (8) is fitted with a moving ring sealing ring (9).

3. The corrosion-resistant mechanical seal device according to claim 1, characterized in that, The first pressure plate (7) and the first spring (6) are both sleeved on the shaft (1).

4. The corrosion-resistant mechanical seal device according to claim 1, characterized in that, The mounting base (3) has a receiving groove (15) inside the receiving cavity, and a ring-shaped mounting groove (16) is provided on the receiving groove (15). A second pressure plate (10) is installed in the receiving groove (15).

5. The corrosion-resistant mechanical seal device according to claim 4, characterized in that, The second pressure plate (10) has a plurality of second springs (13) arranged in a ring on the side facing the receiving groove (15). The outer end of the second spring (13) is provided with a seat plate (14). The second spring (13) and the seat plate (14) are located in the mounting groove (16).

6. The corrosion-resistant mechanical seal device according to claim 4, characterized in that, The receiving groove (15) is annular.

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