CN211474876U

CN211474876U - Special mechanical seal structure of labyrinth type bottom-mounted stirring reaction kettle

Info

Publication number: CN211474876U
Application number: CN201921982775.8U
Authority: CN
Inventors: 徐卫忠; 徐飞
Original assignee: Zhangjiagang Xingyu Petrochemical Machinery Co ltd
Current assignee: Zhangjiagang Xingyu Petrochemical Machinery Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-09-11
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to a special mechanical sealing structure for a labyrinth bottom-mounted stirring reaction kettle, which comprises a main shaft, the bearing is sleeved outside the main shaft, the sealing sleeve is sleeved outside the bearing, the labyrinth seal is fixedly connected at the left end of the sealing sleeve, a main seal is arranged between the labyrinth seal and the main shaft and between the labyrinth seal and the seal sleeve, a cooling water tank is arranged in the seal sleeve, the upper end and the lower end of the cooling liquid tank are respectively and fixedly connected with a cooling water inlet and a cooling water outlet, one side of the cooling liquid tank is provided with the cooling liquid tank, the bearing is connected with the main shaft in a rolling mode through the bearing sleeve, the auxiliary seal is arranged among the main shaft, the bearing sleeve and the seal sleeve, the auxiliary seal comprises three seals of cooling and lubricating, the performance of the mechanical seal is guaranteed and enhanced, the service life of the mechanical seal is prolonged, the mechanical seal is integrally assembled and disassembled, the installation is very convenient, the labor intensity of maintenance personnel is reduced, and the productivity of enterprises is greatly improved.

Description

Special mechanical seal structure of labyrinth type bottom-mounted stirring reaction kettle

Technical Field

The utility model relates to a special mechanical seal structure of labyrinth end dress formula stirring reation kettle belongs to reation kettle mechanical seal spare field.

Background

In the fields of petrochemical industry, fluorine chemical industry, pharmacy, food and biology, required specific high-viscosity materials are pressurized and heated by a stirrer for stirring, and then the uniformly stirred materials are conveyed to production equipment of a specified procedure, in order to prevent the high-viscosity materials from leaking under the action of pressure, a mechanical sealing element is required to be arranged between an equipment body and a rotating shaft, in order to reduce the equipment manufacturing cost and the process requirements, top stirring is changed into bottom stirring, the existing mechanical sealing for the bottom stirrer cannot meet the requirements of high viscosity and no leakage, particularly the design defect in the aspect of spring protection sealing installation is overcome, the mechanical sealing is often failed and has to be stopped for maintenance, the product yield is not increased, and the development of enterprises is restricted, as shown in figure 2, the existing bottom-mounted stirring mechanical sealing is filled mechanical sealing, and a pressure ring 11 fixedly connected to the right end of a kettle opening 12 is adopted, The packing 13 filled among the main shaft 1, the kettle mouth 12 and the compression ring 11 is formed by filling graphite strips into a sealing cavity, tightly pressing the graphite strips through a pressing plate screw, fixing the graphite strips in the inner cavities of the shaft and the reaction kettle, lubricating the graphite strips through high-temperature lubricating oil, and oiling the graphite strips every day to debug the pressing plate screw on time, so that the defects of large workload and large debugging difficulty exist.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model overcomes current defect, provides a special mechanical seal structure of labyrinth end dress formula stirring reation kettle contains cooling, lubricated three sealss, and the performance of guarantee and reinforcing machine seal has increased mechanical seal's life, and integral dismouting, the installation is very convenient, has alleviateed maintenance personal's intensity of labour, has promoted the productivity of enterprise greatly, can effectively solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a special mechanical seal structure of labyrinth end dress formula stirring reation kettle, includes the main shaft, main shaft outside cover is equipped with the bearing, bearing outside cover is equipped with the seal cover, seal cover left end fixedly connected with labyrinth seals, be equipped with main seal between labyrinth seals and main shaft, the seal cover, the inside cooling trough that is equipped with of seal cover, both ends difference fixedly connected with cooling water inlet, cooling water outlet about the cooling trough, cooling trough one side is equipped with the cooling cistern, the bearing passes through bearing housing roll connection main shaft, the bearing right side is provided with the oil tank, be equipped with supplementary vice sealed between main shaft, bearing housing, the seal cover.

Further, the labyrinth seal is fixedly connected with the main seal by bolts.

Further, a shaft sleeve is further arranged at the right end of the bearing, and the sealing sleeve is fixedly connected with the shaft sleeve through a bolt.

Further, a cooling liquid is arranged in the cooling liquid groove.

Further, the upper end and the lower end of the cooling liquid tank are fixedly sealed through bolts.

Further, the main seal is composed of a sealing medium and a spring, and the sealing medium is fixedly connected with the sealing sleeve through the spring.

The utility model discloses beneficial effect: the utility model provides a special mechanical seal structure of labyrinth end dress formula stirring reation kettle, three sealings have been adopted, first labyrinth seals, mainly prevent that the material from tying to die on sealed mill face, second main seal, keep apart spring and medium, prevent that the spring from tying to die, sealed face leans on lubricating oil to cool off lubrication, the oil tank must be installed outside machine seal top 50mm, utilize the dead weight pressure of oil and festival to imitate the ring and come the lubrication, third secondary seal, mainly prevent lubricated external leakage, if the main seal damages the back, it dies to block up lubricating-oil tank's oil inlet, the effect of main seal has also been played, in order to reduce high temperature, mechanical seal is with water proof cover by way, the cooling water is advanced one by one and is come out to cool off mechanical seal, increase of service life.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a structural diagram of a mechanical sealing structure specially used for a labyrinth bottom-mounted stirring reaction kettle.

FIG. 2 is a structural diagram of a mechanical seal of a bottom-mounted stirring reaction kettle in the prior art.

Reference numbers in the figures: 1. a main shaft; 2. a bearing; 3. sealing sleeves; 4. a cooling water outlet; 5. a cooling water inlet; 6. a cooling water tank; 7. auxiliary sealing; 8. a cooling liquid tank; 9. primary sealing; 10. labyrinth sealing; 11. pressing a ring; 12. a kettle opening; 13. a filler; 14. oil tank

Detailed Description

The present invention will be further described with reference to the following embodiments, wherein the drawings are for illustrative purposes only and are not intended to be limiting, and in order to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced and do not represent the size of an actual product.

As shown in fig. 1, a mechanical sealing structure special for a labyrinth bottom-mounted stirring reaction kettle comprises a main shaft 1, a bearing 2 is sleeved outside the main shaft 1, a sealing sleeve 3 is sleeved outside the bearing 2, a labyrinth seal 10 is fixedly connected at the left end of the sealing sleeve 3, a main seal 9 is arranged between the labyrinth seal 10 and the main shaft 1 and the sealing sleeve 3, a cooling water tank 6 is arranged in the sealing sleeve 3, the upper end and the lower end of the cooling liquid tank 6 are respectively and fixedly connected with a cooling water inlet 5 and a cooling water outlet 4, a cooling liquid groove 8 is arranged on one side of the cooling water groove 6, the bearing 2 is connected with the main shaft 1 through a bearing sleeve in a rolling way, an oil tank 14 is arranged on the right side of the bearing 2, the oil tank 14 is installed above the mechanical seal by 50mm and is lubricated by using the dead weight pressure of oil and a joint ring, and an auxiliary seal 7 is arranged among the main shaft 1, the bearing sleeve and the seal sleeve 3.

In the present embodiment, the labyrinth seal 10 is fixedly connected to the main seal 9 by means of bolts

In this embodiment, the right end of the bearing 2 is further provided with a shaft sleeve, and the seal sleeve 3 is fixedly connected with the shaft sleeve through a bolt.

In this embodiment, the cooling liquid tank 8 is filled with cooling liquid.

In this embodiment, the upper and lower ends of the cooling liquid tank 8 are both fixed and sealed by bolts.

In the present embodiment, the main seal 9 is composed of a sealing medium and a spring, and the sealing medium is fixedly connected with the sealing sleeve 3 through the spring.

The utility model discloses improve in: the utility model provides a special mechanical seal structure of labyrinth end dress formula stirring reation kettle, adopt three point seal, two cooling, the collection dress design, whole dismouting, the installation and debugging are very convenient, first labyrinth seals 10, play the effect that blocks high viscosity material by keeping off the material ring, the sealed main seal 9 of second is mainly the pressure in the reation kettle, the material, water carries out the plane seal, prevent that the organic matter in the cauldron from leaking, the sealed auxiliary seal 7 of third is mainly prevented sealed middle lubricating liquid and is leaked, after main seal 9 became invalid, play the backup seal effect, first cooling liquid, through installing liquid tank additional, fix it outside the machine seals about 50mm, it carries out self-cooling by the throttling effect ring among the mechanical seal circulation liquid, external cooling water cools off mechanical seal.

The foregoing is an embodiment of the preferred embodiment of the present invention, showing and describing the basic principles and main features of the present invention and the advantages of the present invention, it should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and the foregoing embodiments and descriptions are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the present invention as claimed, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a special mechanical seal structure of labyrinth end dress formula stirring reation kettle, includes main shaft (1), its characterized in that: the bearing is characterized in that a bearing (2) is sleeved on the outer side of the main shaft (1), a sealing sleeve (3) is sleeved on the outer side of the bearing (2), a labyrinth seal (10) is fixedly connected to the left end of the sealing sleeve (3), a main seal (9) is arranged between the labyrinth seal (10) and the main shaft (1) and between the labyrinth seal (3) and the sealing sleeve (3), a cooling water tank (6) is arranged inside the sealing sleeve (3), a cooling water inlet (5) and a cooling water outlet (4) are fixedly connected to the upper end and the lower end of the cooling water tank (6) respectively, a cooling water tank (8) is arranged on one side of the cooling water tank (6), the bearing (2) is connected with the main shaft (1) in a rolling mode through the bearing sleeve, an oil tank (14) is.

2. The special mechanical seal structure for labyrinth bottom-mounted stirring reaction kettle according to claim 1, characterized in that: the labyrinth seal (10) is fixedly connected with the main seal (9) through bolts.

3. The special mechanical seal structure for labyrinth bottom-mounted stirring reaction kettle according to claim 1, characterized in that: the right end of the bearing (2) is further provided with a shaft sleeve, and the sealing sleeve (3) is fixedly connected with the shaft sleeve through a bolt.

4. The special mechanical seal structure for labyrinth bottom-mounted stirring reaction kettle according to claim 1, characterized in that: and cooling liquid is arranged in the cooling liquid groove (8).

5. The special mechanical seal structure for labyrinth bottom-mounted stirring reaction kettle according to claim 1, characterized in that: the upper end and the lower end of the cooling liquid tank (8) are fixedly sealed through bolts.

6. The special mechanical seal structure for labyrinth bottom-mounted stirring reaction kettle according to claim 1, characterized in that: the main seal (9) is composed of a sealing medium and a spring, and the sealing medium is fixedly connected with the sealing sleeve (3) through the spring.