CN209762247U

CN209762247U - Novel metal bellows mechanical seal device

Info

Publication number: CN209762247U
Application number: CN201920669158.6U
Authority: CN
Inventors: 王俊杰; 周永平; 刘柱
Original assignee: Xinjiang Jun New Chemical Ltd By Share Ltd
Current assignee: Xinjiang Jun New Chemical Ltd By Share Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2019-12-10
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses a novel metal corrugated pipe mechanical sealing device, which comprises a gland, a static ring, a movable ring component and a gland nut, wherein the gland, the static ring, the movable ring component and the gland nut are sleeved on a rotating shaft; the quiet ring sets up in the gland recess and with be equipped with the rotational lock between the gland, the rotating ring closely laminates the quiet ring sets up, gland nut is equipped with the screwed with the surface the joint spare cooperatees and sets up, the joint spare with be equipped with the cutting ferrule between the gland nut. Utility model's advantage lies in: by adopting the metal bellows mechanical seal, the coal tar is only arranged outside the bellows mechanical seal, the mechanical seal failure caused by insufficient pretightening pressure of the movable ring due to the coal tar viscosity can be avoided, the coal tar leakage pollution to the environment is reduced, the service life of equipment is prolonged, and the labor intensity of workers is reduced.

Description

Novel metal bellows mechanical seal device

Technical Field

The utility model belongs to the technical field of mechanical seal and specifically relates to a novel metal bellows mechanical seal device.

Background

Raw material oil adopted in the production process of carbon black is coal tar, the characteristics of the raw material oil are high viscosity and low temperature solid state, a mechanical sealing structure matched with a raw material oil pump manufacturer is an open structure and consists of a single static ring, a single moving ring, a thrust spring, a sealing element and a fixed sleeve, when equipment runs, the coal tar enters the mechanical seal, the oil temperature of the coal tar fluctuates, the viscosity is increased, the coal tar is stuck on the spring and the sliding sleeve, the pretightening pressure of the moving ring is lost, a gap is formed between the static ring and the moving ring to cause coal tar leakage accidents, the mechanical seal belongs to a precise part, the price is high, the mechanical seal is frequently replaced, and the maintenance cost of.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses a novel corrugated metal pipe mechanical seal device adopts corrugated metal pipe mechanical seal, and the coal tar only can not cause because the coal tar glues thickly to make the power ring pretension pressure not enough and mechanical seal inefficacy in the outside of corrugated pipe mechanical seal, reduces the coal tar and leaks polluted environment, extension equipment life and reduction staff intensity of labour.

The technical scheme of the utility model is that:

A novel metal corrugated pipe mechanical sealing device comprises a gland, a static ring, a moving ring assembly and a gland nut, wherein the gland, the static ring, the moving ring assembly and the gland nut are sleeved on a rotating shaft; the quiet ring sets up in the gland recess and with be equipped with the rotational lock between the gland, the rotating ring closely laminates the quiet ring sets up, gland nut is equipped with the screwed with the surface the joint spare cooperatees and sets up, the joint spare with be equipped with the cutting ferrule between the gland nut.

Furthermore, the gland with the seal groove has been seted up to one side of quiet ring surface connection, the seal groove bottom is equipped with the one end of spring part, the other end of spring part is equipped with the sealing washer.

Furthermore, the sealing ring is an O-shaped nitrile rubber sealing ring.

Furthermore, the movable ring, the first connecting end, the metal corrugated pipe, the second connecting end and the joint piece are sequentially connected in a welding manner.

Furthermore, a flat key is arranged at the joint of the first connecting end and the rotating shaft.

Furthermore, a threaded hole is formed in the joint piece, and a fastening screw used for enabling the joint piece to be fastened on the rotating shaft is arranged in the threaded hole.

The utility model has the advantages that: by adopting the metal bellows mechanical seal, the coal tar is only arranged outside the bellows mechanical seal, the mechanical seal failure caused by insufficient pretightening pressure of the movable ring due to the coal tar viscosity can be avoided, the coal tar leakage pollution to the environment is reduced, the service life of equipment is prolonged, and the labor intensity of workers is reduced.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a rotating ring assembly according to an embodiment.

In the figure: the sealing device comprises a gland 1, a static ring 2, a rotating shaft 3, a moving ring component 4, a moving ring 401, a first connecting end 402, a metal corrugated pipe 403, a second connecting end 404, a connector 405, a flat key 406, a fastening screw 407, a compression nut 5, an anti-rotation pin 6, a sealing ring 7, a spring element 8 and a clamping sleeve 9.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.

Example 1

As shown in fig. 1-2, a novel mechanical seal device for metal bellows comprises a gland 1, a stationary ring 2, a movable ring assembly 4 and a gland nut 5, which are sleeved on a rotating shaft 3, wherein the stationary ring 2 is arranged at a groove in the gland 1 in a matching manner, a side end face of the stationary ring 2 and a groove face of the gland are both provided with a hole groove, which are in contact with each other, an anti-rotation pin 6 is arranged in the hole groove, a sealing groove is arranged on the groove face of the gland, which is in contact with the outer surface of the stationary ring 2, the bottom of the sealing groove is provided with one end of a spring element 8; set up between quiet ring 2 and the gland 1 and prevent that the relative rotation takes place between quiet ring 2 and the gland 1 for the stop pin 6, spring part 8 in the seal groove tightly supports sealing washer 7 in quiet ring 2 department and forms sealed face in order to prevent that the during operation medium from getting into the emergence leakage, and the sealing washer adopts O type nitrile rubber sealing washer.

The movable ring component 4 comprises a movable ring 401, a first connecting end 402, a metal corrugated pipe 403, a second connecting end 404 and a joint piece 405 which are sequentially connected, and the movable ring 401, the first connecting end 402, the metal corrugated pipe 403, the second connecting end 404 and the joint piece 405 are connected in a sealing welding manner; the rotating ring 401 is closely attached to the end face of the stationary ring 8 on the side not contacting the gland and can be arranged in a relatively rotating manner, a flat key 406 is arranged between the first connecting end 402 and the rotating shaft 3, and the flat key 406 is used for preventing the rotating ring assembly 4 and the rotating shaft 3 from rotating relatively.

Set up the screw hole on the connector 405, threaded hole is equipped with and is used for making connector 405 fasten the fastening screw 407 on rotation axis 3, and carry out the transmission, the surface of connector 405 is equipped with the external screw thread, the external screw thread on the connector 405 cooperatees with gland nut 5's internal thread, it is the conical surface to connect body 405 inboard, and form the big wedge clearance in port side between conical surface and the rotation axis, still be equipped with the cover and establish the cutting ferrule 9 of taking sharp-pointed inner blade on rotation axis 3 between connector 405 and the gland nut 5, gland nut 5 screws, cutting ferrule 9 is impeld in the wedge clearance and is out of shape along with it, make cutting ferrule and connector inner conical surface form the sphere contact seal, simultaneously, the inner blade embedding of cutting ferrule 9 is the outer wall of rotation axis 3, extrude a circular recess on the outer wall, thereby.

Claims

1. The utility model provides a novel metal bellows mechanical seal device which characterized in that: the device comprises a gland, a static ring, a moving ring assembly and a gland nut, wherein the gland, the static ring, the moving ring assembly and the gland nut are sleeved on a rotating shaft; the quiet ring sets up in the gland recess and with be equipped with the rotational lock between the gland, the rotating ring closely laminates the quiet ring sets up, gland nut is equipped with the screwed with the surface the joint spare cooperatees and sets up, the joint spare with be equipped with the cutting ferrule between the gland nut.

2. the novel metal bellows mechanical seal device of claim 1, wherein: the gland with the seal groove has been seted up to one side that quiet ring surface is connected, the seal groove bottom is equipped with the one end of spring part, the other end of spring part is equipped with the sealing washer.

3. The novel metal bellows mechanical seal device of claim 2, wherein: the sealing ring is an O-shaped nitrile rubber sealing ring.

4. The novel metal bellows mechanical seal device of claim 1, wherein: the movable ring, the first connecting end, the metal corrugated pipe, the second connecting end and the joint piece are sequentially connected in a welding mode.

5. The novel metal bellows mechanical seal device of claim 4, wherein: and a flat key is arranged at the joint of the first connecting end and the rotating shaft.

6. The novel metal bellows mechanical seal device of claim 4, wherein: the joint piece is provided with a threaded hole, and a fastening screw used for fastening the joint piece on the rotating shaft is arranged in the threaded hole.