CN213236071U - High temperature resistant mechanical seal device - Google Patents

Abstract

The utility model discloses a high temperature resistant mechanical sealing device, which comprises a machine body, a static ring structure and a dynamic ring structure, wherein the dynamic ring structure is in sliding connection with the static ring structure, the dynamic ring structure comprises a spring, a transmission pin, a spring seat, a thermal sleeve dynamic ring and a shaft sleeve, the spring is connected with the spring seat and the thermal sleeve dynamic ring, the transmission pin is in mutual clamping fit with a transmission groove on a rotating shaft, the shaft sleeve is fixedly connected with the thermal sleeve dynamic ring, a plurality of circulating pipes are arranged in the thermal sleeve dynamic ring, and on the basis of the prior art, through improving the structure of the mechanical sealing device, the thermal sleeve dynamic ring, the spring seat and the spring are mutually matched, so that after the contact surface of the thermal sleeve dynamic ring and the static ring structure is worn, the thermal sleeve dynamic ring and the static ring structure can still be tightly attached under the pushing of the spring, and the circulating liquid of the circulating pipes is additionally arranged to reduce the internal temperature of the dynamic ring structure, to avoid the effect of temperature rise on the volume of the thermal sleeved ring.

Description

High temperature resistant mechanical seal device

Technical Field

The utility model relates to a mechanical seal technical field especially relates to a high temperature resistant mechanical seal device.

Background

In the prior art, traditional mechanical seal device structure is fairly simple, when using, nevertheless because its rotating ring working end face easily wears out, along with the increase of live time, the effect of obturating between rotating ring and the quiet ring is more and more poor, leaks oil more and more seriously, especially because the metal volume expansion that temperature variation caused can great influence wearing and tearing, leads to the sealed effect between rotating ring and the quiet ring to worsen, so need a new technique to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve among the prior art mechanical seal device after long-time the use, because the temperature uprises and leads to the metal volume inflation, and influence the problem of sealing performance, provide a high temperature resistance mechanical seal device.

The utility model provides a high temperature resistant mechanical seal device, includes organism, quiet ring structure and rotating ring structure, the organism cover is located quiet ring structure with the periphery side of rotating ring structure, quiet ring structure fixed connection in the inside of organism, the rotating ring structure then with quiet ring structure sliding connection, the rotating ring structure includes spring, driving pin, spring holder, hot cover rotating ring and axle sleeve, spring coupling the spring holder with hot cover rotating ring, driving pin then fixed connection in the spring holder is kept away from relatively one side of hot cover rotating ring to with the mutual joint cooperation of the epaxial drive groove of rotation, the outside of axis of rotation is located to the axle sleeve cover, and with hot cover rotating ring fixed connection, its inside still is provided with a plurality of circulating pipes.

The hot-sleeved movable ring is provided with a groove, a movable sealing ring and a movable ring body, wherein the movable sealing ring and the movable ring body are matched with the groove, the groove is located on the inner side of the movable ring body, and the movable sealing ring is located inside the groove.

The static ring structure comprises a static sealing ring, a hot sleeve static ring and a static ring seat, the hot sleeve static ring and the static ring seat are mutually matched and are located on the outer peripheral side of the rotating shaft, and the static sealing ring is located at the joint of the static ring seat and the static sealing ring.

The fixed ring structure is provided with an anti-rotation clamping groove, and the anti-rotation clamping groove is located on one side, far away from the hot sleeve moving ring, of the hot sleeve fixed ring.

The machine body is provided with an anti-rotation pin, and the anti-rotation pin is matched with the anti-rotation clamping groove in a clamped mode.

The hot jacket static ring and the hot jacket moving ring are in relative fit and rotation sealing connection, the hot jacket static ring is made of a silicon carbide material, and the hot jacket moving ring is made of a graphite material.

The machine body is further provided with a fixed sleeve, the fixed sleeve is fixedly connected to one end, close to the hot sleeve moving ring, of the hot sleeve static ring, and the fixed sleeve is sleeved on the outer peripheral side of the joint of the hot sleeve static ring and the hot sleeve moving ring.

The utility model has the advantages that: on the basis of the prior art, by improving the structure of the mechanical sealing device and utilizing the mutual matching of the hot jacket moving ring, the spring seat and the spring, even if the contact surface of the hot jacket moving ring and the static ring structure is abraded, the contact surface can still be kept to be tightly attached to the static ring structure under the pushing of the spring, so that the tightness of the mechanical sealing device is kept, and the internal temperature of the moving ring structure is reduced by circulating the circulating liquid in the circulating pipe, so that the influence of the temperature rise on the volume of the hot jacket moving ring is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic sectional view of a high temperature resistant mechanical sealing device of the present invention.

Fig. 2 is a schematic structural diagram of the shaft sleeve of the high temperature resistant mechanical sealing device of the present invention.

10-machine body, 20-static ring structure, 30-dynamic ring structure, 40-rotating shaft, 11-anti-rotation pin, 12-fixed sleeve, 21-static sealing ring, 22-hot sleeve static ring, 23-static ring seat, 24-anti-rotation clamping groove, 31-spring, 32-transmission pin, 33-spring seat, 34-hot sleeve dynamic ring, 35-shaft sleeve, 41-transmission groove, 341-groove, 342-dynamic sealing ring, 343-dynamic ring body and 351-circulating pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution:

the utility model provides a high temperature resistant mechanical seal device, includes organism 10, quiet ring structure 20 and rotating ring structure 30, organism 10 cover is located the periphery side of quiet ring structure 20 with rotating ring structure 30, quiet ring structure 20 fixed connection in the inside of organism 10, rotating ring structure 30 then with quiet ring structure 20 sliding connection, rotating ring structure 30 includes spring 31, driving pin 32, spring holder 33, hot cover rotating ring 34 and axle sleeve 35, spring 31 connects spring holder 33 with hot cover rotating ring 34, driving pin 32 then fixed connection in spring holder 33 is kept away from one side of hot cover rotating ring 34 relatively to with the mutual joint cooperation of transmission groove 41 in the axis of rotation 40, axle sleeve 35 cover is located the outside of axis of rotation 40, and with hot cover rotating ring 34 fixed connection, its inside still is provided with a plurality of circulating pipes 351.

In the present embodiment, the machine body 10 is configured to maintain the stationary structure 20 and the rotating structure 30 stationary, the stationary structure 20 is maintained stationary on the outer peripheral side of the rotating shaft 40, the rotating structure 30 rotates with the rotation of the rotating shaft 40, the spring retainer 33 is fixedly connected to the machine body 10 and is connected to the hot-shrink movable ring 34 through the spring 31, so that when the hot-shrink movable ring 34 is worn by the rotation, the spring 31 moves and maintains the relative joint rotation with the stationary structure 20 by the spring 31, the spring 31 is compressed when the moving structure 30 and the stationary structure 20 are in contact, thereby effectively coping with the wear of the rotating structure 30, and the sleeve 35 is sleeved on the outer peripheral side of the rotating shaft 40 for the purpose of facilitating the installation of the moving structure 30, meanwhile, the circulation pipe 351 arranged inside the shaft sleeve 35 can reduce the temperature of the moving ring structure 30 by using circulation liquid in the circulation pipe 351, the circulation pipe 351 can be externally connected with a pump body, the situation that the volume changes and the abrasion is influenced due to overhigh temperature is avoided, and the transmission pin 32 arranged on the spring seat 33 can enable the moving ring structure 30 to rotate along with the rotation of the rotating shaft 40 after being in clamping fit with the transmission groove 41 on the rotating shaft 40.

Further, the thermal sleeve moving ring 34 has a groove 341, and a moving seal ring 342 and a moving ring body 343 engaged with the groove 341, the groove 341 is located inside the moving ring body 343, and the moving seal ring 342 is located inside the groove 341.

In this embodiment, the groove 341 is used for mounting the dynamic seal ring 342, the dynamic seal ring 342 is used for improving the sealing effect of the mechanical sealing device, the dynamic seal ring 342 is an O-ring having a certain compression amount when mounted, and is used for sealing the left and right ends of the groove 341, and the dynamic ring body 343 is used for rotating.

Further, the stationary ring structure 20 includes a stationary seal ring 21, a hot-set stationary ring 22 and a stationary ring seat 23, the hot-set stationary ring 22 and the stationary ring seat 23 are mutually matched and are located on the outer peripheral side of the rotating shaft 40, and the stationary seal ring 21 is located at the joint of the stationary ring seat 23 and the stationary seal ring 21.

In the present embodiment, the static seal ring 21 is used to seal the gap between the hot-set static ring 22 and the static ring seat 23, and since the hot-set static ring 22 and the static ring seat 23 are in a static state, the static seal ring 21 can generally achieve a better sealing effect, and the static seal ring 21 is also an O-ring and is selected to fit the gap between the hot-set static ring 22 and the static ring seat 23.

Further, the stationary ring structure 20 further has an anti-rotation clamping groove 24, and the anti-rotation clamping groove 24 is located on a side of the hot sleeve stationary ring 22 relatively far away from the hot sleeve moving ring 34.

In this embodiment, the anti-rotation slot 24 is used to prevent the heat-jacket stationary ring 22 from rotating, and since the machine body 10 itself is not rotating, the machine body is mainly clamped and fixed with the machine body 10 to prevent the heat-jacket stationary ring 22 from rotating.

Further, the machine body 10 is provided with an anti-rotation pin 11, and the anti-rotation pin 11 and the anti-rotation clamping groove 24 are mutually clamped and matched.

In this embodiment, the rotation-preventing pin 11 is used to be fixed to the stationary ring structure 20 in a clamping manner, so as to prevent the stationary ring structure 20 from being displaced during the rotation of the rotating shaft 40, and reduce the sealing performance.

Further, the hot jacket static ring 22 and the hot jacket dynamic ring 34 are in relatively, fitting, rotating and sealing connection, the hot jacket static ring 22 is made of a silicon carbide material, and the hot jacket dynamic ring 34 is made of a graphite material.

In this embodiment, the joint between the stationary heat-jacket ring 22 and the moving heat-jacket ring 34 has a small friction coefficient, and the two surfaces tend to be closed under the action of the spring 31, so that the leakage at the joint is relatively small, while the silicon carbide material is used because the silicon carbide material has stable chemical properties, a high thermal conductivity, a small thermal expansion coefficient, and good wear resistance, while the graphite material is used because the graphite has high temperature resistance and self-lubricity, and when the stationary heat-jacket ring 22 and the moving heat-jacket ring 34 rotate in a manner of being attached to each other, the sealing performance at the joint between the moving heat-jacket ring 34 and the stationary heat-jacket ring 22 is still relatively good even if the temperature rises.

Further, the machine body 10 further has a fixing sleeve 12, and the fixing sleeve 12 is fixedly connected to one end of the hot sleeve static ring 22 relatively close to the hot sleeve dynamic ring 34, and is sleeved on the outer peripheral side of the joint of the hot sleeve static ring 22 and the hot sleeve dynamic ring 34.

In this embodiment, the function of the fixed sleeve 12 is to limit the movement track of the thermal sleeve moving ring 34 in the horizontal direction, so as to avoid affecting the sealing performance between the thermal sleeve moving ring 34 and the thermal sleeve stationary ring 22 due to the position offset of the thermal sleeve moving ring 34 during the rotation process, that is, not affecting the overall sealing performance of the mechanical sealing device.

The utility model discloses on prior art's basis, through improving mechanical seal device's structure, add axle sleeve 35 and circulating pipe 351 to the mode of heat exchange reduces the inside temperature of heat jacket rotating ring 34 is right again heat jacket rotating ring 34 with the quiet ring 22's of heat jacket material is selected, chooses for use appropriate material to make the quiet ring 22 of heat jacket with the leakproofness of the junction of heat jacket rotating ring 34 is still stable under the high temperature condition to mechanical seal device's sealed effect has been improved.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (7)

1. The utility model provides a high temperature resistant mechanical seal device, its characterized in that, includes organism, quiet ring structure and rotating ring structure, the organism cover is located quiet ring structure with the periphery side of rotating ring structure, quiet ring structure fixed connection in the inside of organism, the rotating ring structure then with quiet ring structure sliding connection, the rotating ring structure includes spring, driving pin, spring holder, hot cover rotating ring and axle sleeve, spring coupling the spring holder with hot cover rotating ring, driving pin then fixed connection in the spring holder is kept away from relatively one side of hot cover rotating ring to with the cooperation of the mutual joint of epaxial drive groove of rotation, the outside of axis of rotation is located to the axle sleeve cover, and with hot cover rotating ring fixed connection, its inside still is provided with a plurality of circulating pipes.

2. The high-temperature-resistant mechanical sealing device as claimed in claim 1, wherein the shrink fit rotating ring has a groove, and a moving seal ring and a rotating ring body which are matched with the groove, the groove is located on the inner side of the rotating ring body, and the moving seal ring is located inside the groove.

3. The high-temperature-resistant mechanical sealing device as claimed in claim 1, wherein the stationary ring structure comprises a stationary sealing ring, a stationary heat-jacket ring and a stationary ring seat, the stationary heat-jacket ring and the stationary ring seat are mutually matched and are positioned on the outer circumferential side of the rotating shaft, and the stationary sealing ring is positioned at the joint of the stationary ring seat and the stationary sealing ring.

4. The high-temperature-resistant mechanical sealing device as claimed in claim 3, wherein the stationary ring structure further has an anti-rotation clamping groove, and the anti-rotation clamping groove is located on a side of the hot jacket stationary ring relatively far away from the hot jacket moving ring.

5. The high-temperature-resistant mechanical sealing device as claimed in claim 4, wherein the body is provided with an anti-rotation pin, and the anti-rotation pin and the anti-rotation clamping groove are mutually clamped and matched.

6. The high-temperature-resistant mechanical sealing device as claimed in claim 5, wherein the hot jacket static ring and the hot jacket dynamic ring are in relatively close-fitting and rotating sealing connection, the hot jacket static ring is made of silicon carbide material, and the hot jacket dynamic ring is made of graphite material.

7. The high-temperature-resistant mechanical sealing device as claimed in claim 6, wherein the machine body further comprises a fixing sleeve fixedly connected to an end of the hot sleeve stationary ring relatively close to the hot sleeve moving ring and sleeved on an outer peripheral side of a junction of the hot sleeve stationary ring and the hot sleeve moving ring.

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