CN219282684U

CN219282684U - A long-life rotary joint for desulfurizing agent is carried

Info

Publication number: CN219282684U
Application number: CN202320787946.1U
Authority: CN
Inventors: 曹树森
Original assignee: Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Current assignee: Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-30
Anticipated expiration: 2033-04-11

Abstract

The utility model discloses a long-service-life rotary joint for desulfurizing agent delivery, which comprises a gas powder joint bushing, a rotary joint shell, an upper bearing, a lower bearing and a liquid storage type sealing flange plate; the rotary joint shell is sleeved outside the gas-powder joint bushing, the upper end of the rotary joint shell is rotationally connected with the gas-powder joint bushing through an upper bearing, and the lower end of the rotary joint shell is rotationally connected with the gas-powder joint bushing through a lower bearing; the liquid storage type sealing flange plate is fixedly connected with the outer wall of the rotary joint shell; the upper end face of the liquid storage type sealing flange plate is rotatably and hermetically connected with the lower end of the gas powder joint bushing through a sealing assembly; the middle part of the liquid storage type sealing flange plate is provided with an air powder outlet channel communicated with the material circulation channel. The utility model realizes the high sealing of the rotary joint by the upper bearing, the lower bearing, the liquid storage type sealing flange and the sealing assembly, is particularly suitable for conveying high-pressure air-powder mixed media, and has the advantages of convenient installation, durability and easy maintenance.

Description

A long-life rotary joint for desulfurizing agent is carried

Technical Field

The utility model relates to the technical field of desulfurization devices in the metallurgical industry, in particular to a long-service-life rotary joint for desulfurizing agent delivery.

Background

In order to improve the efficiency of molten iron desulfurization and the utilization rate of desulfurizing agents, various large steel factories are in a state of being in charge at present, a blowing method desulfurizing device is modified, and a common mode at present is to rotate a spray gun, so that on one hand, the dynamic performance of molten iron can be improved, desulfurization powder is uniformly refined, the reaction area of the desulfurizing agents and molten iron is increased, and the utilization rate of the desulfurizing agents is improved; on the other hand, by rotating the spray gun, the vertical upward floating track of the desulfurizing agent is changed into a spiral floating track, so that the reaction time of the desulfurizing agent and molten iron is prolonged, and the desulfurizing efficiency of the molten iron and the utilization rate of the desulfurizing agent are further improved. In order to rotate the spray gun and simultaneously spray the desulfurizing agent into the molten iron through the bottom of the spray gun, a rotary joint is required to be installed at the rotary device. However, due to the special property of the desulfurization powder and the poor working condition of the molten iron desulfurization site, the rotary joint on the market at present is generally realized by adopting a double-layer rotary composite cylinder, and due to poor sealing property, even the phenomenon of powder leakage and even bearing locking occurs when the newly installed rotary joint is used for less than one circle sometimes.

Based on this, the prior art still remains to be improved.

Disclosure of Invention

In order to solve the technical problems, the embodiment of the utility model provides a high-service-life rotary joint for desulfurizing agent conveying, which solves the technical problem that the service life of the conventional rotary joint is short.

In order to solve the technical problems, some embodiments of the utility model disclose a long-life rotary joint for desulfurizing agent delivery, which comprises a gas powder joint bushing, a rotary joint shell, an upper bearing, a lower bearing and a liquid storage type sealing flange,

wherein, the inside of the gas powder joint bushing is hollow to form a material circulation channel;

the rotary joint shell is sleeved outside the gas-powder joint bushing, the upper end of the rotary joint shell is in rotary connection with the gas-powder joint bushing through an upper bearing, and the lower end of the rotary joint shell is in rotary connection with the gas-powder joint bushing through a lower bearing;

the liquid storage type sealing flange plate is fixedly connected with the outer wall of the rotary joint shell; the upper end face of the liquid storage type sealing flange plate is rotatably and hermetically connected with the lower end of the gas powder joint bushing through a sealing assembly;

the middle part of the liquid storage type sealing flange plate is provided with a gas powder outlet channel communicated with the material circulation channel.

Further, the upper ends of the gas-powder connector bushings are respectively provided with internal threads for connecting with a gas-powder input hose.

Further, the outer wall of the gas-powder joint bushing is sequentially provided with an upper bearing lock nut and a first spacer sleeve from top to bottom, wherein the first spacer sleeve is positioned between the upper bearing lock nut and the upper bearing, a bearing mounting flange is further arranged on the outer side of the first spacer sleeve, and the lower end face of the bearing mounting flange is in sealing connection with the upper end face of the rotary joint shell.

Further, an external thread used for being connected with the upper bearing lock nut is arranged on the outer wall of the upper end of the gas-powder joint bushing.

Further, a first sealing groove which is circumferentially arranged is formed in the bearing mounting flange, and a dustproof sealing ring which abuts against the outer wall of the first spacer sleeve is arranged in the first sealing groove.

Further, the inner wall of the upper portion of the rotary joint housing has a first step, and the lower end surface of the upper bearing is partially located on the first step.

Further, a second spacer sleeve is sleeved on the outer wall of the gas-powder joint bushing, the second spacer sleeve is positioned between the upper bearing and the lower bearing, and a gap between the inner wall of the rotary joint shell and the outer wall of the second spacer sleeve forms a sealed oil cavity which is communicated with the upper bearing and the lower bearing.

Further, the rotary joint shell is provided with an oil injection nozzle communicated with the sealed oil cavity.

Further, the seal assembly includes:

the second sealing groove is arranged on the lower end surface of the gas-powder joint bushing;

a horizontal extension portion extending outwardly from a lower end of the gas-powder adaptor sleeve;

an annular sealing partition extending downward from the end of the horizontal extension;

the annular liquid storage groove is arranged on the upper end face of the liquid storage type sealing flange plate;

and a third seal groove arranged on the groove wall of one side of the annular liquid storage groove far away from the gas-powder joint bushing;

the annular sealing partition plate is positioned in the annular liquid storage tank, and a third sealing ring tightly propping against the annular sealing partition plate is arranged in the third sealing groove;

the second sealing groove is internally provided with a second sealing ring, and the lower end of the second sealing ring is tightly abutted against the upper surface of the liquid storage type sealing flange plate and positioned at the inner side of the annular liquid storage groove.

Further, the lower end of the rotary joint shell is provided with a bolt hole for connecting with the liquid storage type sealing flange plate.

By adopting the technical scheme, the utility model has at least the following beneficial effects:

the high-service-life rotary joint for desulfurizing agent conveying provided by the utility model realizes high sealing of the rotary joint by matching the upper bearing, the lower bearing, the liquid storage type sealing flange and the sealing assembly, is particularly suitable for conveying high-pressure air-powder mixed media, and is convenient to install, durable and easy to maintain.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a high life rotary joint for desulfurizing agent delivery according to some embodiments of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic diagram of a high life rotary joint for desulfurizing agent delivery according to some embodiments of the present utility model.

Reference numerals illustrate:

1. a gas-powder joint bushing; 2. a rotary joint housing; 3. an upper bearing; 4. a lower bearing; 5. liquid storage type sealing flange plate; 6. an upper bearing lock nut; 7. a first spacer sleeve; 8. a bearing mounting flange; 9. a dust-proof sealing ring; 10. a first step; 11. a second spacer sleeve; 12. sealing the oil cavity; 13. an oil filling nozzle; 14. a second seal ring; 15. an annular sealing partition; 16. an annular liquid storage tank; 17. a third seal ring; 18. a gas powder inlet; 19. a gas powder outlet; 20. sealing the sealing groove on the bottom surface of the flange; 21. a material flow channel.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

As shown in fig. 1 to 3, some embodiments of the present utility model disclose a long-life rotary joint for desulfurizing agent delivery, comprising a gas-powder joint bushing 1, a rotary joint housing 2, an upper bearing 3, a lower bearing 4 and a liquid-storage type sealing flange 5, wherein the gas-powder joint bushing 1 is used as a material circulation channel 21 for passing materials such as gas-powder mixture, i.e. the inside of the gas-powder joint bushing 1 is hollow to form a material circulation channel 21, the upper end of the gas-powder joint bushing is connected with an input flow channel, and the lower end of the gas-powder joint bushing outputs fluid through the liquid-storage type sealing flange 5; the rotary joint shell 2 is sleeved outside the gas-powder joint bushing 1, and generally, the upper end part of the gas-powder joint bushing 1 is exposed out of the upper end of the rotary joint shell 2, the upper end of the rotary joint shell 2 is in rotary connection with the gas-powder joint bushing 1 through an upper bearing 3, and the lower end of the rotary joint shell 2 is in rotary connection with the gas-powder joint bushing 1 through a lower bearing 4; the rotary connection between the rotary joint shell 2 and the gas-powder joint bushing 1 is realized through the upper and lower bearings 4, and the liquid storage type sealing flange plate 5 is fixedly connected with the outer wall of the rotary joint shell 2; the upper end face of the liquid storage type sealing flange plate 5 is rotatably and hermetically connected with the lower end of the gas powder joint bushing 1 through a sealing assembly; the middle part of the liquid storage type sealing flange plate 5 is provided with a gas powder outlet 19 channel communicated with the material circulation channel 21.

The rotary connection between the rotary joint housing 2 and the gas powder joint bushing 1 is realized through the upper bearing 3 and the lower bearing 4, and the liquid storage type sealing of the liquid storage type sealing flange plate 5 is adopted to realize the sealing connection between the gas powder joint bushing 1 and the liquid storage type sealing flange plate 5, so that gas powder is prevented from entering a rotary space, damage is caused to the rotary joint, the problems of sealing of a desulfurizing agent and the service life of the bearing are solved pertinently, and the rotary joint has relatively large application feasibility and market prospect. In some embodiments, in order to achieve the connection between the gas-powder connector bushing 1 and the fluid input pipe, the upper ends of the gas-powder connector bushing 1 are respectively provided with internal threads for connecting with a gas-powder input hose. The connector of the high-pressure gas-powder mixing hose can be conveniently connected through the internal thread, and when the high-pressure gas-powder mixing hose is used, the upper end of the decomposing connector bushing becomes a gas-powder inlet 18, and the lower end becomes a gas-powder outlet 19, so that the conveying and the discharging of the gas-powder are realized.

According to the long-life rotary joint disclosed by some embodiments of the utility model, on the basis of the embodiments, the outer wall of the gas-powder joint bushing 1 is sequentially provided with an upper bearing lock nut 6 and a first spacer sleeve 7 from top to bottom, wherein the first spacer sleeve 7 is positioned between the upper bearing lock nut 6 and the upper bearing 3, the outer side of the first spacer sleeve 7 is also provided with a bearing mounting flange 8, and the lower end face of the bearing mounting flange 8 is in sealing connection with the upper end face of the rotary joint housing 2. The connection between the upper ends of the swivel housing 2 is achieved by means of a first spacer sleeve 7 and a bearing lock nut, and in some embodiments the outer wall of the upper end of the gas-powder connector bushing 1 is provided with an external thread for connection with the upper bearing lock nut 6. By means of the external thread connection, the upper bearing lock nut 6 can be brought into contact with the first spacer sleeve 7 as much as possible to form an effective seal. Further, in order to further ensure tightness, a first sealing groove which is circumferentially arranged is arranged in the bearing mounting flange 8, and a dustproof sealing ring 9 which abuts against the outer wall of the first spacer sleeve 7 is arranged in the first sealing groove. Through the cooperation of first sealing washer for the gas-powder mixing is basically impossible to get into in the swivel joint casing 2 upper end from swivel joint casing, effectively avoids blocking and blocking.

The long-life rotary joint disclosed in some embodiments of the present utility model has the first step 10 on the inner wall of the upper part of the rotary joint housing 2, and the lower end surface of the upper bearing 3 is partially located on the first step 10. The first step 10 enables the upper bearing 3 to be mounted better. Meanwhile, part of the lubricating oil is suspended in the gap so as to provide lubricating oil for the bearing. Specifically, in some embodiments, a second spacer sleeve 11 is further sleeved on the outer wall of the gas-powder connector bushing 1, the second spacer sleeve 11 is located between the upper bearing 3 and the lower bearing 4, and a gap between the inner wall of the rotary connector housing 2 and the outer wall of the second spacer sleeve 11 forms a sealed oil cavity 12 communicating the upper bearing 3 and the lower bearing 4. The rotary joint housing 2 is provided with an oil filling nozzle 13 communicated with the sealed oil cavity 12. When the lubricating oil is used, the lubricating oil is injected through the oil injection nozzle 13, the upper end of the lubricating oil is the upper bearing 3, the lower end of the lubricating oil is the lower bearing 4, so that the upper bearing 3 and the lower bearing 4 can be lubricated simultaneously, the abrasion and friction in the rotation process of the upper bearing 3 and the lower bearing 4 are reduced, and the service life is further prolonged.

The long-life rotary joint disclosed in some embodiments of the present utility model, on the basis of the above embodiments, the seal assembly includes: the second sealing groove is arranged on the lower end face of the gas-powder joint bushing 1; a horizontal extension part extending outwards from the lower end of the gas-powder joint bushing 1; an annular sealing partition 15 extending downwardly from the end of the horizontal extension; the annular liquid storage groove 16 is arranged on the upper end surface of the liquid storage type sealing flange plate 5; and a third seal groove provided on a groove wall of the annular liquid storage groove 16 on a side away from the gas-powder joint bushing 1; wherein, the annular sealing partition plate 15 is positioned in the annular liquid storage tank 16, and a third sealing ring 17 tightly abutted against the annular sealing partition plate 15 is arranged in the third sealing groove; a second sealing ring 14 is arranged in the second sealing groove, and the lower end of the second sealing ring 14 abuts against the upper surface of the liquid storage type sealing flange plate 5 and is positioned on the inner side of the annular liquid storage groove 16. The sealing liquid in the annular liquid storage groove 16 is sealed by the second sealing ring 14 and the third sealing ring 17 respectively, namely, liquid in the liquid storage groove (the annular liquid storage groove 16) and front and back sealing can effectively prevent gas-powder mixture from entering the bearing, so that the problem that the service life of the rotary joint is low and even damaged due to powder entering the bearing is effectively solved. The lower end of the rotary joint housing 2 is provided with a bolt hole for connecting with the liquid storage type sealing flange 5, so that the liquid storage type sealing flange 5 is stably connected with the rotary joint housing 2 through bolts.

The long-life rotary joint disclosed by some embodiments of the utility model is suitable for conveying high-pressure and high-flow gas-powder mixture, and the application proves that the rotary joint is particularly suitable for conveying high-pressure gas-powder mixture medium, and is convenient to install, durable and easy to maintain. The anti-explosion gas-powder joint mainly comprises a gas-powder joint bushing 1, a rotary joint shell 2, a liquid storage type sealing flange 5, a bearing flange end cover (bearing mounting flange 8), a first spacer sleeve (first spacer sleeve 7), a second stepped spacer sleeve (second spacer sleeve 11), a lower bearing 4, an upper bearing 3, a bearing locking nut, a nut gasket, a connecting bolt, a dustproof sealing ring 9, a second sealing ring 14, a third sealing ring 17, anti-explosion lubricating liquid and the like; the rotary bearing can be divided into a fixed end and a rotary end, and the fixed end and the rotary end realize relative rotation through an upper bearing and a lower bearing; wherein the upper end of the fixed end is a fixed end inlet (gas powder inlet 18) of the gas seal mixing agent, and the lower end of the rotating end is a rotating end outlet (gas powder outlet 19) of the gas powder mixing agent; the inlet of the fixed end is communicated with the outlet of the rotary end through a flow channel (inner hole) of the gas-powder mixture in the same diameter and straight through, namely, the gas-powder joint bushing 1 is provided with an inner wall with the same diameter, so that powder accumulation can be effectively avoided, and the gas-powder is prevented from being blocked in the rotary joint; the fixed end sequentially comprises a gas powder joint bushing 1, a bearing lock nut, a nut gasket, a first spacer sleeve, a second stepped spacer sleeve, an O-shaped ring (a third sealing ring 17) and the like from top to bottom, wherein the O-shaped ring is arranged in a sealing groove at the bottom of the joint bushing; the rotary end sequentially comprises a bearing flange end cover, a dustproof sealing ring 9 arranged in a sealing groove of the bearing flange end cover, a bearing flange connecting bolt, a rotary joint shell 2, a liquid storage type sealing flange 5, a rotary joint mounting bolt and the like from top to bottom; the gas-powder joint bushing 1 is characterized in that the whole outer wall of the gas-powder joint bushing 1 is of a stepped annular hollow structure, and an inner thread is formed on the inner side of the upper end of the bushing (the gas-powder joint bushing 1) and is used for being connected with a gas-powder hose; an external thread and a locking gasket groove are formed on the outer side of the upper end of the bushing; an O-shaped sealing ring groove (a second sealing groove) and a liquid storage sealing baffle plate (an annular sealing baffle plate 15) are formed at the lower end of the bushing; the liquid storage type sealing flange plate 5 is also of a hollow structure, wherein an inner hole is a gas powder circulation channel, a liquid storage groove (an annular liquid storage groove 16) is formed in the upper end of the liquid storage sealing flange plate and used for storing sealing oil, a sealing ring groove (a third sealing groove) is formed in the inner wall of the outer side of the liquid storage groove, and an O-shaped sealing ring (a third sealing ring 17) is arranged in the third sealing groove to prevent the sealing oil from flowing out into a bearing cavity; a sealing groove (sealing groove 20 on the bottom surface of the sealing flange) is formed in the lower end of the sealing flange, and an O-shaped sealing ring is arranged in the groove for preventing leakage of the gas-powder mixture; the outer annular surface of the flange is uniformly provided with a plurality of bolt through holes which are equal to the connecting bolts along the circumference, and the rotary joint mounting bolts sequentially pass through the threaded holes on the rotary joint shell 2 and the bolt through holes on the liquid storage type sealing flange plate 5 to mount the rotary joint on the rotary hollow shaft of the desulfurization equipment; the liquid storage groove (sealing oil cavity 12) of the rotating part is filled with lubricating liquid, and the liquid storage sealing baffle plate at the lower end of the lining of the fixed end part is inserted into the liquid storage groove and prevents the lubricating oil from leaking through the sealing rings at the two sides of the groove; the liquid in the liquid storage groove and the front and back seals effectively prevent the gas-powder mixture from entering the bearing, thereby effectively solving the problem that the service life of the rotary joint is low and even damaged due to the fact that the powder enters the bearing.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A long-life rotary joint for desulfurizing agent delivery is characterized by comprising a gas powder joint bushing, a rotary joint shell, an upper bearing, a lower bearing and a liquid storage type sealing flange,

2. The long life rotary joint according to claim 1, wherein the upper ends of the gas-powder joint bushings are respectively provided with internal threads for connecting with a gas-powder input hose.

3. The long-life rotary joint according to claim 1, wherein an upper bearing lock nut and a first spacer sleeve are sequentially arranged on the outer wall of the gas-powder joint bushing from top to bottom, wherein the first spacer sleeve is positioned between the upper bearing lock nut and the upper bearing, a bearing mounting flange is further arranged on the outer side of the first spacer sleeve, and the lower end face of the bearing mounting flange is in sealing connection with the upper end face of the rotary joint shell.

4. A long life rotary joint according to claim 3, wherein the gas-powder joint bushing is provided with external threads on the outer wall of the upper end for connection with the upper bearing lock nut.

5. A high life rotary joint according to claim 3, wherein the bearing mounting flange is internally provided with a circumferentially arranged first seal groove in which a dust seal ring is seated against the outer wall of the first spacer sleeve.

6. The high life rotary joint according to claim 1, wherein the inner wall of the upper portion of the rotary joint housing has a first step, and the upper bearing lower end surface is partially located on the first step.

7. The high life rotary joint of claim 1, wherein the outer wall of the gas-powder joint bushing is further sleeved with a second spacer sleeve, the second spacer sleeve is positioned between the upper bearing and the lower bearing, and a gap between the inner wall of the rotary joint housing and the outer wall of the second spacer sleeve forms a sealed oil cavity communicating the upper bearing and the lower bearing.

8. The long life rotary joint according to claim 7, wherein a grease nipple communicating with said seal oil chamber is provided on said rotary joint housing.

9. The high life rotary joint of claim 1, wherein the seal assembly comprises:

10. The long life rotary joint according to claim 1, wherein a lower end of said rotary joint housing is provided with a bolt hole for bolting with said liquid storage sealing flange.