CN215861753U

CN215861753U - Anti-twist corrugated pipe mechanical sealing device

Info

Publication number: CN215861753U
Application number: CN202122173228.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Liaoning Haoyu Machinery Manufacturing Co ltd
Current assignee: Liaoning Haoyu Machinery Manufacturing Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-18
Anticipated expiration: 2031-09-08

Abstract

The utility model discloses an anti-twist corrugated pipe mechanical sealing device, which relates to the technical field of mechanical sealing and aims to solve the problem that a corrugated pipe is easy to twist off due to torque transmission.

Description

Anti-twist corrugated pipe mechanical sealing device

Technical Field

The utility model relates to the technical field of mechanical shaft sealing, in particular to an anti-twist corrugated pipe mechanical sealing device.

Background

The mechanical sealing device of the corrugated pipe is widely applied to sealing devices which are easy to polymerize, viscous and the like in petroleum, chemical engineering, papermaking, food and the like.

The present bellows seal is in polymerization, crystallization, ropy etc. operating mode, and the moment of torsion of sealed friction transmission under such operating mode just needs the moment of torsion of bellows transmission also to increase, often can lead to sealing failure because the moment of torsion is too big to cause the bellows to twist off.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, namely the problem that the corrugated pipe is easy to twist off due to the fact that the corrugated pipe transmits torque, the utility model provides a twist-off prevention corrugated pipe mechanical sealing device which comprises a moving ring assembly and a static ring assembly, wherein the static ring assembly comprises a static ring cover, the static ring cover is connected to a pump shell, a static ring is installed on the static ring cover, the moving ring assembly comprises a tailstock and a moving ring seat, the corrugated pipe is arranged between the tailstock and the moving ring seat, a transmission sleeve is arranged on the outer surface of the tailstock, the tailstock and the transmission sleeve are fixedly connected with a shaft through a jackscrew, a shifting fork is integrally arranged on the side surface of the transmission sleeve, and the transmission sleeve is fixedly connected with the moving ring seat through the shifting fork.

Through adopting above-mentioned technical scheme, the driving sleeve drives the shift fork and rotates, and then the shift fork drives the rotating ring and rotates. In the transmission process, the shifting fork bears the transmission torque, the corrugated pipe only plays the roles of elastic compensation and sealing, the torque generated in the transmission process is not borne, and the corrugated pipe is prevented from being broken due to the bearing of the transmission torque.

The utility model is further provided with: the quiet ring is the notch cuttype along axial cross section, quiet ring lid is for falling the notch cuttype along axial cross section, the notch cuttype of quiet ring with be provided with first auxiliary seal circle between the notch cuttype of quiet ring lid.

Through adopting above-mentioned technical scheme, first sealing washer can seal quiet ring sum quiet ring cover to guarantee that sealed effect between the two is good.

The utility model is further provided with: and a gap is formed on the surface of the tailstock, which is in contact with the shaft, and a second auxiliary sealing ring is arranged in the gap and used for sealing the tailstock and the shaft.

Through adopting above-mentioned technical scheme, set up the second sealing washer and can seal tailstock and axle to guarantee that sealing effect between the two is good.

The beneficial technical effects of the utility model are as follows:

1. the utility model drives the movable ring of the corrugated pipe to rotate through the shifting fork of the transmission sleeve, so that the corrugated pipe only plays a role of elastic compensation assistance, and the phenomenon that the corrugated pipe is twisted off due to the bearing of torque is avoided.

Drawings

Fig. 1 shows a schematic structural diagram of the present invention.

Reference numerals: 1. a shaft; 2. a stationary ring assembly; 21. a stationary ring cover; 22. a stationary ring; 23. a first auxiliary seal ring; 3. a rotating ring assembly; 31. a tailstock; 32. a transmission sleeve; 321. a shifting fork; 33. a movable ring seat; 34. a second auxiliary seal ring; 35. carrying out top thread; 4. a bellows.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Referring to fig. 1, the utility model provides a twist-off prevention corrugated pipe 4 mechanical sealing device, which comprises a moving ring component 3 and a static ring component 2, wherein the static ring component 2 comprises a static ring cover 21, the static ring cover 21 is fixedly connected to a pump shell, a static ring 22 is installed on the static ring cover 21, and the static ring 22 is in clearance connection with a shaft 1. Quiet ring lid 21 is for falling the notch cuttype along the cross section of axle 1 to, and quiet ring 22 is the notch cuttype along the cross section of axle 1 to, and the notch cuttype of quiet ring lid 21 and the notch cuttype parallel arrangement of quiet ring 22 to be provided with first auxiliary seal ring 23 between two notch cuttages, first sealing washer can seal quiet ring 22 and quiet ring lid 21, guarantees that the sealed effect between quiet ring 22 and the quiet ring lid 21 is good.

The rotating ring component 3 comprises a tailstock 31 and a rotating ring seat 33, the rotating ring seat 33 is arranged on the surface of the static ring 22 deviated from the step surface, the tailstock 31 is arranged on one side of the rotating ring seat 33 deviated from the static ring 22, a corrugated pipe 4 is arranged between the tailstock 31 and the rotating ring seat 33, and two ends of the corrugated pipe 4 are fixedly connected to the tailstock 31 and the rotating ring seat 33 respectively. The outer surface of the tailstock 31 is provided with a transmission sleeve 32, the transmission sleeve 32 is provided with a threaded hole, the tailstock 31 is provided with a through hole, the threaded hole in the transmission sleeve 32 and the through hole in the tailstock 31 are coaxially arranged by 1, the jackscrew 35 is in threaded connection with the threaded hole in the transmission sleeve 32, one end of the jackscrew 35 is screwed out of the threaded hole and penetrates through the through hole in the tailstock 31 to jack the shaft 1, and the tailstock 31 and the transmission sleeve 32 are fixedly connected onto the shaft 1 through the jackscrew 35.

A shifting fork 321 is integrally arranged on the surface of one side of the transmission sleeve 32 close to the movable ring seat 33, the shifting fork 321 is positioned on the upper side of the corrugated pipe 4, and the transmission sleeve 32 is fixedly connected with the movable ring seat 33 through the shifting fork 321. The driving sleeve 32 can drive the movable ring seat 33 to move along with the shifting fork 321.

The surface of the tailstock 31 contacting with the shaft 1 is provided with a gap, a second auxiliary sealing ring 34 is arranged in the gap, and the second auxiliary sealing ring 34 is used for sealing the tailstock 31 and the shaft 1 to prevent leakage.

During operation, the tailstock 31 and the transmission sleeve 32 can be driven to rotate along with the rotation of the shaft 1, the transmission sleeve 32 drives the movable ring seat 33 to rotate through the shifting fork 321, the shifting fork 321 and the tailstock 31 are integrally arranged, and the shifting fork 321 is fixedly connected with the movable ring seat 33, so that the movable ring seat 33 and the shifting fork 321 can synchronously rotate, the corrugated pipe 4 can rotate along with the movable ring component 3, the shifting fork 321 is used for transmission, and the phenomenon that the corrugated pipe 4 is twisted off due to the fact that the corrugated pipe 4 bears transmission torque is avoided.

In summary, the present invention can avoid the twist-off phenomenon caused by the torque applied to the bellows 4 by the shift fork 321 disposed between the tail seat 31 and the movable ring seat 33. The tailstock 31 and the transmission sleeve 32 are fixed on the shaft 1 through the jackscrew 35, so that the connection between the tailstock 31 and the transmission sleeve 32 is more stable and reliable. The first auxiliary sealing ring 23 is arranged, so that the sealing effect between the tailstock 31 and the shaft 1 is better, and the second auxiliary sealing ring 34 is arranged, so that the sealing effect between the static ring 22 and the static ring cover 21 is better.

While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims

1. The utility model provides an anti-twist corrugated pipe mechanical seal device, includes rotating ring subassembly (3) and quiet ring subassembly (2), quiet ring subassembly (2) are including quiet ring lid (21), quiet ring lid (21) are connected on the pump case, install quiet ring (22), its characterized in that on quiet ring lid (21): the rotating ring assembly (3) comprises a tailstock (31) and a rotating ring seat (33), the tailstock (31) and the rotating ring seat (33) are provided with corrugated pipes (4) therebetween, a transmission sleeve (32) is arranged on the outer surface of the tailstock (31), the tailstock (31) and the transmission sleeve (32) are fixedly connected with a shaft (1) through a jack screw (35), a shifting fork (321) is integrally arranged on the side surface of the transmission sleeve (32), and the transmission sleeve (32) passes through the shifting fork and the rotating ring seat (33) is fixedly connected.

2. The anti-twist bellows mechanical seal of claim 1, wherein: quiet ring (22) are the notch cuttype along axle (1) to the cross section, quiet ring lid (21) are for falling the notch cuttype along axle (1) to the cross section, the ladder face of quiet ring (22) with be provided with first auxiliary seal circle (23) between the ladder face of quiet ring lid (21).

3. The anti-twist bellows mechanical seal of claim 1, wherein: the surface of the tailstock (31) in contact with the shaft (1) is provided with a notch, and a second auxiliary sealing ring (34) is arranged in the notch and used for sealing the tailstock (31) and the shaft (1).