CN219221259U

CN219221259U - Radial double-end-face mechanical sealing device

Info

Publication number: CN219221259U
Application number: CN202320742415.0U
Authority: CN
Inventors: 姜永胜
Original assignee: Dandong Chenghai Machinery Manufacturing Co ltd
Current assignee: Dandong Chenghai Machinery Manufacturing Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-06-20
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a radial double-end-face mechanical sealing device, which relates to the technical field of mechanical foundation pieces and comprises a movable ring, an outer stationary ring and an inner stationary ring, wherein the movable ring is in circumferential clamping fit with a shaft sleeve, the outer stationary ring and the inner stationary ring are in circumferential clamping fit with an end cover, the outer stationary ring is arranged outside the inner stationary ring to form radial double-end-face mechanical sealing, wear-resistant rings are respectively arranged between the end faces of the outer stationary ring and the inner stationary ring and the end face of the movable ring, the wear-resistant rings are attached to the end face of the movable ring, and the other ends of the outer stationary ring and the inner stationary ring are connected with the end cover through a plurality of uniform and separate compression springs; according to the utility model, the oil absorption sponge is arranged at the inner end of the oil hole of the end cover, more lubricating oil is adsorbed when the end cover does not work, the condition that the lubricating oil is exposed is reduced, and the wear-resisting ring is arranged between the outer static ring and the inner static ring and between the outer static ring and the moving ring, so that the wear of the outer static ring, the inner static ring and the moving ring is reduced, and the service life is prolonged.

Description

Radial double-end-face mechanical sealing device

Technical Field

The utility model relates to the technical field of mechanical base parts, in particular to a radial double-end-face mechanical sealing device.

Background

Mechanical seals are a critical component in power and fluid machine applications. The device can directly influence the normal and stable operation of equipment, can also generate direct key influence on the safe production of factories and the operation of the whole set of devices, and plays an important role in ensuring the continuity of the devices and the safe and stable operation of the equipment especially for petrochemical enterprises in China. Thus, fluid machines are currently in wide use and in various forms in modern industrial plant systems. With the continuous development of science and technology and the gradual improvement of production level, the current application parameters of the fluid machinery are continuously improved, and the skill and environmental protection characteristics of the fluid machinery are also gradually highlighted.

The mechanical seal is an axial end face sealing device which achieves sealing by means of the pretension of elastic elements to static and dynamic ring end face sealing pairs and the compression of medium pressure and elastic element pressure, so the mechanical seal is also called end face seal.

Some rotating equipment typically uses single-ended mechanical seals that are extremely prone to "run, cap, drip, and leak" phenomena during production operations. With the improvement of the industrial level, a radial double-end-face mechanical sealing device is generated, and the problems are solved to a great extent.

However, the oil hole of the existing radial double-end-face mechanical sealing device is generally arranged at a position between the outer static ring and the inner static ring, so that the oil leakage problem of the outer static ring still needs to be solved, and the problems that the static ring and the movable ring are worn greatly and the service life is influenced still exist.

Disclosure of Invention

According to the radial double-end-face mechanical sealing device, the oil suction sponge is arranged at the inner end of the oil hole of the end cover, so that more lubricating oil is adsorbed when the device does not work, the condition that the lubricating oil is exposed is reduced, the wear-resisting rings are arranged between the outer static ring and the inner static ring and between the outer static ring and the moving ring, the abrasion of the outer static ring, the inner static ring and the moving ring is reduced, and the service life is prolonged.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a radial bi-polar face mechanical seal device, includes with axle sleeve circumference joint complex rotating ring and with end cover circumference joint complex outer quiet ring and interior quiet ring, the outside of quiet ring in outer quiet ring setting forms radial bi-polar face mechanical seal, be provided with the wear-resisting ring between the terminal surface of quiet ring in outer quiet ring and the terminal surface of interior and the rotating ring terminal surface respectively, the wear-resisting ring is laminated with the terminal surface of rotating ring, the other end of quiet ring in outer quiet ring and the interior is connected with the end cover through a plurality of even respectively compression spring, compression spring is in compression state, the end cover is equipped with the oilhole, the oilhole link up to the region between quiet ring in outer quiet ring, and the rotating ring, the inner of oilhole is provided with the oil absorption sponge.

Preferably, a first sealing ring is arranged between the movable ring and the side surface of the shaft sleeve.

Preferably, a second sealing ring is arranged between the outer stationary ring and the side surface of the end face.

Preferably, a sealing gasket is arranged on the end face of the movable ring and corresponds to the position of the wear-resistant ring.

Preferably, the wear-resistant ring is made of titanium alloy materials.

The utility model provides a radial double-end-face mechanical sealing device, which has the following beneficial effects:

1. according to the utility model, the oil absorption sponge is arranged at the inner end of the oil hole of the end cover, more lubricating oil is adsorbed when the end cover does not work, the condition that the lubricating oil is exposed is reduced, and the wear-resisting rings are arranged between the outer static ring and the inner static ring and between the outer static ring and the moving ring, so that the wear of the outer static ring, the inner static ring and the moving ring is reduced, and the service life is prolonged;

2. the sealing gasket is arranged at the contact position between the movable ring and the wear-resistant ring, the tightness between the wear-resistant ring and the movable ring is improved, and the first sealing ring and the second sealing ring are respectively arranged between the movable ring and the shaft sleeve and between the outer stationary ring and the end cover, so that the tightness of the device is improved.

Drawings

Fig. 1 is a front cross-sectional view of a radial double-ended mechanical seal of the present utility model.

FIG. 2 is a schematic view of the wear level of the present utility model.

In the figure: 1. a moving ring; 2. a wear ring; 3. an inner stationary ring; 4. a shaft sleeve; 5. a first seal ring; 6. an end cap; 7. an outer stationary ring; 8. a second seal ring; 9. a compression spring; 10. an oil hole; 11. an oil absorbing sponge; 12. and a spring case.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, the radial double-end-face mechanical sealing device comprises a movable ring 1, an outer stationary ring 7 and an inner stationary ring 3, wherein the movable ring 1 is in circumferential clamping fit with a shaft sleeve 4, the outer stationary ring 7 and the inner stationary ring 3 are in circumferential clamping fit with an end cover 6, the outer stationary ring 7 is arranged outside the inner stationary ring 3 to form radial double-end-face mechanical sealing, a wear-resistant ring 2 is respectively arranged between the end faces of the outer stationary ring 7 and the inner stationary ring 3 and the end face of the movable ring 1, the wear-resistant ring 2 is attached to the end face of the movable ring 1, the other ends of the outer stationary ring 7 and the inner stationary ring 3 are connected with the end cover 6 through a plurality of uniformly and respectively compressed springs 9, the compressed springs 9 are in a compressed state, the end cover 6 is provided with oil holes 10, the oil holes 10 penetrate to the areas among the outer stationary ring 7, the inner stationary ring 3 and the movable ring 1, and the inner ends of the oil holes 10 are provided with oil absorption sponges 11; a first sealing ring 5 is arranged between the movable ring 1 and the side surface of the shaft sleeve 4; a second sealing ring 8 is arranged between the outer stationary ring 7 and the side surface of the end surface; the end face of the movable ring 1 is provided with a sealing gasket at a position corresponding to the wear-resistant ring 2; the wear-resistant ring 2 is made of titanium alloy material.

The detailed connection means are known in the art, and the following mainly introduces the working principle and process, specifically as follows:

according to the utility model, the shaft sleeve 4 is connected with the movable ring 1, and the outer stationary ring 7 and the inner stationary ring 3 are connected with the end cover 6 by adopting the prior art, so long as the shaft sleeve 4 and the movable ring 1 are in circumferential clamping fit, the outer stationary ring 7 and the inner stationary ring 3 are in circumferential clamping fit with the end cover 6, and the moving tightness is ensured.

As can be seen from fig. 1 of the drawings of the specification, the reaction force of the compression spring 9 in the utility model pushes the outer stationary ring 7 and the inner stationary ring 3 to apply force to one side of the moving ring 1 along the axial direction, so that the outer stationary ring 7 and the inner stationary ring 3 push the wear-resistant ring 2 to be closely attached to the end surface of the moving ring 1; during operation, the shaft sleeve 4 drives the movable ring 1 to rotate, friction and abrasion are generated between the movable ring 1 and the wear-resistant ring 2, and friction and abrasion are generated between the outer static ring 7, the inner static ring 3 and the wear-resistant ring 2, so that abrasion of the outer static ring 7, the inner static ring 3 and the movable ring 1 is greatly reduced, and the service life is prolonged. The end face light ring of the wear-resistant ring 2 is made of wear-resistant materials. For example, as shown in fig. 2, assuming that the abrasion generated by the two objects a and B is 2 under a certain condition, a C object is added between the two objects a and B, and under the same condition (including the same energy) as before, the abrasion of the two objects a and B is reduced by half, so that the service life is prolonged. In addition, set up oil absorption sponge 11 in the inside of end cover 6 oilhole 10, during operation, moving ring 1 rotates, makes its kinetic energy that produces to the friction to take lubricating oil to flow thereupon, and then make the moist oil change in the oil absorption sponge 11 throw away, exert lubricated effect, and adsorb more lubricating oil when not working, reduce the condition that lubricating oil exposes.

The sealing device comprises a movable ring 1, a shaft sleeve 4, a first sealing ring 5, an outer static ring 7, a second sealing ring 8, a sealing ring and a sealing ring, wherein the first sealing ring 5 is arranged between the movable ring 1 and the side surface of the shaft sleeve 4, and the second sealing ring 8 is arranged between the outer static ring 7 and the side surface of the end surface; the end face of the movable ring 1 is provided with a sealing gasket at a position corresponding to the wear-resistant ring 2, so as to increase the tightness of the device; the wear-resistant ring 2 can be made of titanium alloy material, and the titanium alloy is wear-resistant and has enough hardness.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Radial bi-polar face mechanical seal device, its characterized in that includes with axle sleeve (4) circumference joint complex moving ring (1) and with end cover (6) circumference joint complex outer quiet ring (7) and interior quiet ring (3), outer quiet ring (7) set up the outside of quiet ring (3) in, form radial bi-polar face mechanical seal, be provided with wear-resisting ring (2) between the terminal surface of quiet ring (7) and interior quiet ring (3) and moving ring (1) terminal surface respectively, wear-resisting ring (2) laminating with the terminal surface of moving ring (1), the other end of quiet ring (7) and interior quiet ring (3) is connected with end cover (6) through a plurality of even respectively compression spring (9), compression spring (9) are in compressed state, end cover (6) are equipped with oilhole (10), oilhole (10) link up to the region between outer quiet ring (7), interior quiet ring (3) and moving ring (1), the inner of oilhole (10) is provided with oil absorption sponge (11).

2. A radial double mechanical seal according to claim 1, characterized in that a first sealing ring (5) is arranged between the side surfaces of the moving ring (1) and the bushing (4).

3. A radial double mechanical seal according to claim 1, characterized in that a second sealing ring (8) is arranged between the outer stationary ring (7) and the side surface of the end face.

4. A radial double mechanical seal according to claim 1, characterized in that the end face of the moving ring (1) is provided with a gasket in a position corresponding to the wear ring (2).

5. A radial double mechanical seal according to claim 1, wherein the wear ring (2) is of titanium alloy material.