CN216200495U

CN216200495U - Reation kettle shaft seal device and reation kettle thereof

Info

Publication number: CN216200495U
Application number: CN202122638481.7U
Authority: CN
Inventors: 杜延伟
Original assignee: Ningbo Chengchuang Machinery Co ltd
Current assignee: Ningbo Chengchuang Machinery Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a reaction kettle shaft seal device and a reaction kettle thereof, relates to the technical field of reaction kettle shaft seals, and solves the technical problem that the existing reaction kettle shaft seal mechanism is poor in sealing effect. The device comprises a shaft seal chamber, wherein a rotating shaft assembly is arranged in the shaft seal chamber; the friction pair is arranged in the shaft seal chamber and is a sealing end face consisting of a movable ring and a static ring; the rotating ring is radially connected with the rotating shaft assembly and can rotate along with the rotating shaft assembly, and the top and the bottom of the rotating ring are provided with static rings; the auxiliary sealing ring comprises a movable ring sealing ring and a static sealing ring, the movable ring sealing ring is arranged between the movable ring and the rotating shaft assembly, and the static sealing ring is arranged between the static ring and the inner wall of the shaft seal chamber; buffering compensation mechanism, including elastic element, elastic element's one end is connected in the bearing seal room, and the other end and quiet ring butt have the axial displacement towards the rotating ring direction all the time so that quiet ring bottom can compress tightly in the terminal surface of rotating ring all the time under elastic element's elasticity effect.

Description

Reation kettle shaft seal device and reation kettle thereof

Technical Field

The utility model relates to the technical field of reaction kettle shaft seal, in particular to a reaction kettle shaft seal device and a reaction kettle thereof.

Background

The reaction kettle shaft sealing device is an important component of a reaction kettle and is mainly used for sealing a stirring shaft of the reaction kettle and preventing gas and reaction media in the reaction kettle from leaking from a gap between the stirring shaft and a stirring port on a kettle cover of the reaction kettle.

The currently used shaft seal device of the reaction kettle mainly adopts two seal modes of stuffing box packing seal and metal plane mechanical seal. The stuffing box stuffing sealing mainly comprises the steps that stuffing in the stuffing box is compressed through a gland, so that the stuffing is deformed and clings to the surface of a stirring shaft, and the sealing effect is achieved; the disadvantages of the stuffing box packing seal described above are: the filler is easy to wear in the process of continuously rubbing with the rotating stirring shaft, so that a gap is formed between the filler and the stirring shaft, and further gas leakage is caused, so that the filler needs to be periodically replaced in a shorter service cycle, the use cost of an enterprise is increased, time and labor are wasted in the process of disassembling and assembling the filler, and the production efficiency is greatly influenced.

The mechanical seal is reliable in sealing, the sealing state is stable in long-period operation, the leakage amount is small, according to rough statistics, the leakage amount is only 1/100 of the packing seal generally, the service life is long and can reach 1-2 years or longer in oil and water media, the mechanical seal can be reasonably used in coal dressing media and can reach more than one year generally, the friction power consumption is small, the friction power of the mechanical seal is only 10-50% of that of the packing seal, the abrasion degree of a shaft or a shaft sleeve is small, the maintenance period is long, under general conditions, frequent maintenance is not needed, the application range is wide, the mechanical seal can be used for sealing at low temperature, high temperature, vacuum, high pressure and different rotating speeds, various corrosive media and media containing abrasive particles, and the like, so the mechanical seal is used in common reaction kettles more.

At present, can't carry out good regulation compensation behind most reation kettle bearing seal mechanism rotating ring terminal surface or the quiet ring terminal surface wearing and tearing for it is poor to closely spend between quiet ring and the rotating ring, thereby has reduced the sealed effect of reation kettle bearing seal, leads to a large amount of inside medium to leak to appear in the scene easily, thereby leads to peripheral sanitary environment dirty in disorder poor, also can make inside VOC to leak polluted environment in a large number.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a reaction kettle shaft seal device and a reaction kettle thereof, and solves the technical problem that the existing reaction kettle shaft seal mechanism is poor in seal effect. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a shaft seal device of a reaction kettle, which comprises a shaft seal chamber, wherein a rotating shaft assembly is arranged in the shaft seal chamber;

the friction pair is arranged in the shaft seal chamber and is a sealing end face consisting of a movable ring and a static ring; the movable ring is radially connected with the rotating shaft assembly and can rotate along with the rotating shaft assembly, and the top and the bottom of the movable ring are provided with the static rings;

the auxiliary sealing ring comprises a movable ring sealing ring and a static sealing ring, the movable ring sealing ring is arranged between the movable ring and the rotating shaft assembly, and the static sealing ring is arranged between the static ring and the inner wall of the shaft seal chamber;

the buffer compensation mechanism comprises an elastic element, one end of the elastic element is connected to the shaft seal chamber, the other end of the elastic element is abutted to the static ring, and the static ring always has axial movement towards the direction of the moving ring under the action of the elastic force of the elastic element so that the bottom of the static ring can be always pressed on the end face of the moving ring.

As a further improvement of the present invention, the rotating shaft assembly includes a rotating shaft and a shaft sleeve, the shaft sleeve is disposed inside the shaft seal chamber, the rotating shaft is radially connected inside the shaft sleeve, the rotating ring is sleeved on the periphery of the shaft sleeve, the rotating ring seal ring is disposed between the rotating ring and the shaft sleeve, and the rotating shaft can drive the rotating ring to rotate through the shaft sleeve.

As a further improvement of the present invention, the elastic element is a spring, one end of the spring is disposed in the insertion groove of the shaft seal chamber, and the other end of the spring abuts against the stationary ring.

As a further improvement of the utility model, a first cooling water inlet hole and a first cooling water outlet hole are formed in the shaft seal chamber, and the first cooling water inlet hole is communicated with the first cooling water outlet hole through a first cooling channel.

As a further improvement of the utility model, a second cooling water inlet hole and a second cooling water outlet hole are formed in the shaft seal chamber, and the second cooling water inlet hole is communicated with the second cooling water outlet hole through a second cooling channel.

As a further improvement of the present invention, a flow control valve is disposed at each of the first cooling water inlet hole and the second cooling water inlet hole.

As a further improvement of the utility model, a shaft seal liquid inlet and a shaft seal liquid outlet are formed in the shaft seal chamber, and shaft seal liquid can enter the shaft seal chamber through the shaft seal liquid inlet to lubricate the static ring and the dynamic ring and can flow out of the reaction kettle shaft seal device through the shaft seal liquid outlet.

As a further improvement of the utility model, a leakage inspection hole is further formed in the shaft seal chamber, a plugging part is detachably arranged on the leakage inspection hole, and whether liquid flows out of the leakage inspection hole can be observed by opening the plugging part.

As a further improvement of the present invention, a bearing grease inlet hole and a bearing grease outlet hole are formed in the shaft seal chamber, and bearing grease can enter the lubricating bearing assembly inside the shaft seal chamber through the bearing grease inlet hole and can flow out through the bearing grease outlet hole.

The utility model provides a reaction kettle, include the reation kettle body with reation kettle shaft seal device, the pivot subassembly among the reation kettle shaft seal device can seal and insert in the stirring mouth of reation kettle body.

The reaction kettle shaft seal device provided by the utility model comprises a seal end face consisting of a movable ring and a static ring, wherein the movable ring is radially connected with a rotating shaft assembly and can rotate along with the rotating shaft assembly, and the static ring is arranged at the top and the bottom of the movable ring; a movable ring sealing ring is arranged between the movable ring and the rotating shaft assembly, and a static sealing ring is arranged between the static ring and the inner wall of the shaft seal chamber, so that the sealing performance of the whole device is improved; in addition, the axial distance is buffered and compensated by means of the elastic force of the elastic element, the spring only performs axial thrust motion without large vibration and motion and torque transmission, and the spring is matched with the static ring above and below the dynamic ring to compensate the end face of the dynamic ring, so that shaft seal liquid cannot leak out through the matched end face of the dynamic ring and the static ring, toxic and harmful gas in the reaction kettle is prevented from being discharged outdoors, and the sealing effect of the shaft seal of the reaction kettle is improved.

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 the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a shaft seal device of a reaction vessel provided in an embodiment of the present invention;

FIG. 2 is a sectional view of a shaft seal device of a reaction vessel according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a portion a in fig. 2 according to an embodiment of the present invention.

Reference numerals: 1. a shaft seal chamber; 2. a moving ring; 3. a moving ring sealing ring; 4. a stationary ring; 5. a static seal ring; 6. a rotating shaft assembly; 61. a rotating shaft; 62. a shaft sleeve; 8. an elastic element; 9. a first cooling water inlet hole; 10. a first cooling water outlet; 11. a second cooling water inlet hole; 12. a second cooling water outlet; 13. shaft seal liquid inlet holes; 14. a shaft seal liquid outlet; 15. a first leak check hole; 16. a second leak check hole; 17. bearing lubricating grease enters the hole; 18. a bearing grease outlet hole; 19. and a limiting pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Referring to fig. 1-3, the present invention provides a shaft seal device for a reaction vessel, comprising a shaft seal chamber 1, wherein a rotating shaft assembly 6 is arranged in the shaft seal chamber; the friction pair is arranged in the shaft seal chamber 1 and is a sealing end surface consisting of a movable ring 2 and a static ring 4; the rotating ring 2 is radially connected with the rotating shaft assembly 6 and can rotate along with the rotating shaft assembly 6, the top and the bottom of the rotating ring 2 are provided with the static rings 4, and the static rings 4 are connected with the shaft seal chamber 1 through the limiting pins 19 to limit the rotation of the static rings 4; the auxiliary sealing ring comprises a movable ring sealing ring 3 and a static sealing ring 5, the movable ring sealing ring 3 is arranged between the movable ring 2 and the rotating shaft assembly 6, and the static sealing ring 5 is arranged between the static ring 4 and the inner wall of the shaft seal chamber 1; buffering compensation mechanism, including elastic element 8, elastic element 8's one end is connected in shaft seal room 1, and the other end and quiet ring 4 butt, quiet ring 4 has the axial displacement towards rotating ring 2 direction all the time under elastic element 8's elasticity effect so that 4 bottoms of quiet ring can compress tightly in the terminal surface of rotating ring 2 all the time.

Wherein, pivot subassembly 6 includes pivot 61 and axle sleeve 62, the inside axle sleeve 62 that is provided with of shaft seal room 1, the inside radial connection of axle sleeve 62 has pivot 61, the cover is established in axle sleeve 62 periphery and is provided with rotating ring sealing washer 3 between rotating ring 2 and the axle sleeve 62 to rotating ring 2, rotating ring 2 owing to and have radial connection between the axle sleeve 62, and also have radial connection between axle sleeve 62 and the pivot 61, so rotating ring 2 is clockwise synchronous pivoted with pivot 61, seal up with quiet ring 4 and other auxiliary seal spare.

The elastic element 8 in this embodiment is a spring, one end of which is disposed in the insertion groove of the shaft seal chamber 1, and the other end of which abuts against the stationary ring 4. The rotating ring 2 carries out end face friction with quiet ring 4, if the upper and lower both ends face of rotating ring 2 has wearing and tearing then the accessible spring carries out real-time axial distance compensation, and the spring is owing to do not have huge vibrations and motion, and does not transmit the moment of torsion and only do the axial thrust motion, the quiet ring 4 of the correspondence of cooperation rotating ring 2 upper and lower gives the 2 terminal surface compensations of rotating ring for the bearing seal liquid can not spill through rotating

ring

2 and 4 cooperation terminal surfaces of quiet ring, has prevented that the poisonous and harmful gas in the reation kettle can not discharge to outdoor.

As an optional implementation manner of the embodiment of the present invention, the shaft seal chamber 1 is provided with a first cooling water inlet hole 9 and a first cooling water outlet hole 10, and the first cooling water inlet hole 9 is communicated with the first cooling water outlet hole 10 through a first cooling channel. The first cooling water inlet hole 9 of cooling water gets into and carries out good cooling at the metal cavity inner wall, through the metal heat conductivity, can effectively cool down, avoids high temperature to reation kettle's influence, and the cooling water can go out the inlet hole department at first cooling and flow and carry out a circulation, just can flow the cooling always as long as equipment is opened.

In order to further improve the cooling effect of the present device, as an optional implementation manner of the embodiment of the present invention, the shaft seal chamber 1 is provided with a second cooling water inlet hole 11 and a second cooling water outlet hole 12, and the second cooling water inlet hole 11 and the second cooling water outlet hole 12 are communicated through a second cooling channel.

In addition, flow control valves can be arranged at the first cooling water inlet hole 9 and the second cooling water inlet hole 11 to control the flow and the pressure to ensure the normal operation of the equipment.

The shaft seal device of the reaction kettle is provided with a shaft seal liquid inlet hole 13 and a shaft seal liquid outlet hole 14, and shaft seal liquid can enter the lubricating static ring 4 and the dynamic ring 2 in the shaft seal chamber 1 through the shaft seal liquid inlet hole 13 and can flow out of the shaft seal device of the reaction kettle through the shaft seal liquid outlet hole 14. The second cooling water inlet hole 11 may be disposed above the shaft seal fluid inlet hole 13, the second cooling water outlet hole 12 is disposed below the shaft seal fluid outlet hole 14, and the arrangement of the second cooling water inlet hole 11 and the second cooling water outlet hole 12 may be used to cool the shaft seal fluid.

Still seted up on the bearing seal room 1 and revealed the inspection hole, the inspection hole 16 is revealed to first inspection hole 15 and the second of revealing, two reveal on the inspection hole can dismantle and be provided with the shutoff portion, open whether the shutoff portion can observe the corresponding inspection hole of revealing and have liquid to flow out. The first leakage inspection hole 15 is used for inspecting inner leakage, a plugging part on the first leakage inspection hole 15 can be opened to check whether liquid flows out, and if so, whether the end surface of the movable ring 2 or the static ring 4 or an auxiliary sealing part thereof is worn can be judged, so that the subsequent effective scheme can be conveniently implemented and processed.

The second leakage check hole 16 is used for checking leakage, when a pressure gauge of the shaft seal tank descends, whether liquid flows out can be checked, and if the liquid flows out, whether the end face of the movable ring 2 or the static ring 4 or an auxiliary sealing part of the movable ring is worn can be judged, so that the subsequent effective scheme implementation treatment can be facilitated.

As an alternative embodiment of the present invention, a bearing grease inlet hole 17 and a bearing grease outlet hole 18 are formed on the shaft seal chamber 1 of the reaction kettle shaft seal device, and bearing grease can enter the lubricating bearing assembly inside the shaft seal chamber 1 through the bearing grease inlet hole 17 and can flow out through the bearing grease outlet hole 18.

In addition, the utility model also provides a reaction kettle, which comprises a reaction kettle body and the reaction kettle shaft sealing device, wherein the rotating shaft assembly 6 in the reaction kettle shaft sealing device can be hermetically inserted into the stirring port of the reaction kettle body.

The shaft seal device can be used for sealing the working medium which is toxic, inflammable, explosive, volatile, easy to crystallize, high-temperature and low-temperature or high-vacuum; not only can prevent the internal medium from leaking, but also reduces the external discharge of VOC and prolongs the service life.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A shaft seal device of a reaction kettle, which is characterized by comprising:

a shaft seal chamber in which a rotating shaft assembly is arranged;

2. The shaft seal device for the reaction kettle according to claim 1, wherein the rotating shaft assembly comprises a rotating shaft and a shaft sleeve, the shaft sleeve is arranged in the shaft seal chamber, the rotating shaft is radially connected in the shaft sleeve, the rotating ring is sleeved on the periphery of the shaft sleeve, the rotating ring sealing ring is arranged between the rotating ring and the shaft sleeve, and the rotating shaft can drive the rotating ring to rotate through the shaft sleeve.

3. The shaft seal device of claim 1, wherein the elastic element is a spring, one end of the spring is disposed in the insertion groove of the shaft seal chamber, and the other end of the spring abuts against the stationary ring.

4. The shaft seal device of claim 1, wherein the shaft seal chamber has a first cooling water inlet hole and a first cooling water outlet hole, and the first cooling water inlet hole is communicated with the first cooling water outlet hole through a first cooling channel.

5. The shaft seal device of claim 4, wherein the shaft seal chamber has a second cooling water inlet hole and a second cooling water outlet hole, and the second cooling water inlet hole is communicated with the second cooling water outlet hole through a second cooling channel.

6. The shaft seal device of claim 5, wherein a flow control valve is arranged at each of the first cooling water inlet hole and the second cooling water inlet hole.

7. The shaft seal device of claim 1, wherein the shaft seal chamber is provided with a shaft seal liquid inlet and a shaft seal liquid outlet, and the shaft seal liquid can enter the shaft seal chamber through the shaft seal liquid inlet to lubricate the stationary ring and the moving ring, and can flow out of the shaft seal device through the shaft seal liquid outlet.

8. The shaft seal device of claim 1, wherein the shaft seal chamber further comprises a leakage inspection hole, the leakage inspection hole is detachably provided with a blocking portion, and whether liquid flows out from the leakage inspection hole can be observed by opening the blocking portion.

9. The shaft seal device of claim 1, wherein the shaft seal chamber is provided with a bearing grease inlet hole and a bearing grease outlet hole, and bearing grease can enter the bearing assembly inside the shaft seal chamber through the bearing grease inlet hole and can flow out through the bearing grease outlet hole.

10. A reaction kettle, which is characterized by comprising a reaction kettle body and the reaction kettle shaft sealing device as claimed in any one of claims 1 to 9, wherein a rotating shaft component in the reaction kettle shaft sealing device can be inserted into a stirring port of the reaction kettle body in a sealing manner.