Rotary joint sealing device on non-transmission side of converter

Abstract

The invention discloses a sealing device for a rotating joint on a non-transmission side of a converter, which is characterized in that a shell is sleeved on a hollow shaft, a first deep groove ball bearing is fixedly arranged at the joint of one end of the shell and one end of the hollow shaft by a front gland, a plurality of second O-shaped rings are arranged at the joint of the shell and the hollow shaft, and a plurality of second O-shaped rings are arranged at the joint of the shell and the hollow shaft. A first water pipe through hole matched with a first water pipe is formed in one end of the hollow shaft, a second water pipe through hole matched with a second water pipe is formed in one end of the shell, the first water pipe is communicated with the second water pipe, and a second deep groove ball bearing groove matched with a second deep groove ball bearing is formed in the connecting position of the other end of the shell and the other end of the hollow shaft. According to the device, multiple seals are additionally arranged, and the sealing performance of the whole device is improved.

Description

Technical Field

[0001] The invention relates to a sealing device for a rotary joint at a non-driving side of a converter, belonging to the technical field of converters. Background Art

[0002] The non-drive side rotary joint of the converter is a device used to cool the converter body by uninterrupted water flow during the production process. Due to frequent rotation during production, the internal sealing ring is worn and leaks, and needs to be replaced every year during the furnace service, which increases the production cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a sealing device for the non-drive side rotary joint of a converter. By dismantling the non-drive side rotary joint of the offline device, it is found that the rotor and the shell are sealed by a sealing ring, and there is only one sealing ring. By measuring the length of the rotor, it is found that there is enough space to add multiple seals.

[0004] Preferably, the present invention provides a sealing device for a rotary joint on the non-transmission side of a converter, comprising a hollow shaft, a front pressure cover, a first deep groove ball bearing, a shell, a second deep groove ball bearing, a first water pipe and a second water pipe, the shell being sleeved on the hollow shaft, the front pressure cover fixing the first deep groove ball bearing at the connection between one end of the shell and one end of the hollow shaft, a first water pipe through hole matching the first water pipe is opened at one end of the hollow shaft, a second water pipe through hole matching the second water pipe is opened at one end of the shell, the first water pipe is connected to the second water pipe, a second deep groove ball bearing groove matching the second deep groove ball bearing is opened at the connection between the other end of the shell and the other end of the hollow shaft, and the second deep groove ball bearing is fixedly arranged at the second deep groove ball bearing groove.

[0005] Preferably, it comprises a rear pressure cover, a rear blocking plate and a stacking ring, wherein the stacking ring, the rear pressure cover and the rear blocking plate are fixedly arranged at the other end of the hollow shaft in sequence from the inside to the outside.

[0006] Preferably, an inner plug is included, and the inner plug is fixedly arranged inside the hollow shaft.

[0007] Preferably, a straight-through pressure injection oil cup is included, a straight-through pressure injection oil cup through hole matching the straight-through pressure injection oil cup is provided on the shell, and the straight-through pressure injection oil cup is connected to the second deep groove ball bearing via the straight-through pressure injection oil cup through hole.

[0008] Preferably, a fourth O-ring is included, and the inner plug and the hollow shaft are directly provided with the fourth O-ring.

[0009] Preferably, a first O-ring is included, and the first O-ring is arranged between the front gland and the hollow shaft.

[0010] Preferably, it comprises a first hexagonal bolt and a first light spring washer, and the front pressure cover fixes the first hexagonal bolt and the first light spring washer on the housing.

[0011] Preferably, a plurality of second O-rings are included, and a plurality of second O-rings are provided at the connection between the housing and the hollow shaft.

[0012] Preferably, a third O-ring is included, and the third O-ring is fixedly disposed between the rear gland and the hollow shaft.

[0013] Preferably, it comprises a second hexagonal bolt and a second light spring washer, and the rear blocking plate is fixedly arranged at the other end of the hollow shaft by means of the second hexagonal bolt and the second light spring washer.

[0014] The beneficial effects achieved by the present invention are: The present invention provides a converter non-drive side rotary joint sealing device, comprising a hollow shaft, a front pressure cover, a first deep groove ball bearing, a shell, a second deep groove ball bearing, a first water pipe and a second water pipe, wherein the shell is sleeved on the hollow shaft, the front pressure cover fixes the first deep groove ball bearing at the connection between one end of the shell and one end of the hollow shaft, a plurality of second O-rings are arranged at the connection between the shell and the hollow shaft, a first water pipe through hole matching the first water pipe is provided at one end of the hollow shaft, a second water pipe through hole matching the second water pipe is provided at one end of the shell, the first water pipe is connected to the second water pipe, a second deep groove ball bearing groove matching the second deep groove ball bearing is provided at the connection between the other end of the shell and the other end of the hollow shaft, and the second deep groove ball bearing is fixedly arranged at the second deep groove ball bearing groove. The device is found by disassembling the non-drive side rotary joint of the offline line that the rotor and the shell are sealed by a sealing ring, and there is only one sealing ring. By measuring the length of the rotor, it is found that there is enough space to add multiple seals.

[0015] The device modifies the non-drive side rotary joint by changing the original one sealing ring between the water inlet and return pipes and the shell to the current three sealing rings, which is used to prevent water leakage, and changing the seal between the water inlet pipe and the water return pipe to two seals instead of one, which is used to prevent water cross-talk. The improvement of the device greatly increases the service life of the non-drive side rotary joint, from the original annual replacement of the non-drive side rotary joint to the current replacement of the non-drive side rotary joint every 2-3 years, reducing the cost of spare parts and replacement labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 are cross-sectional views of some embodiments of the present application; Figure 2 It is a right view in some embodiments of the present application; Meaning of the reference numerals: 1-hollow shaft; 2-first O-ring; 3-first hexagonal bolt; 4-first light spring washer; 5-front pressure cover; 6-first deep groove ball bearing; 7-housing; 8-second O-ring; 9-second deep groove ball bearing; 10-rear pressure cover; 11-third O-ring; 12-rear plug; 13-second hexagonal bolt; 14-second light spring washer; 15-inner plug; 16-fourth O-ring; 17-stack ring; 18-straight-through pressure injection oil cup; 19-first water pipe; 20-second water pipe. DETAILED DESCRIPTION

[0018] If the descriptions of "first" and "second" etc. are involved in the present invention, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0019] See also Figure 1 The present application provides a sealing device for a rotary joint on the non-drive side of a converter, comprising a hollow shaft 1, a front pressure cover 5, a first deep groove ball bearing 6, a shell 7, a second deep groove ball bearing 9, a first water pipe 19 and a second water pipe 20, wherein the shell 7 is sleeved on the hollow shaft 1, and the front pressure cover 5 fixes the first deep groove ball bearing 6 at the connection between one end of the shell 7 and one end of the hollow shaft 1, a first water pipe through hole matching the first water pipe 19 is opened at one end of the hollow shaft 1, a second water pipe through hole matching the second water pipe 20 is opened at one end of the shell 7, the first water pipe 19 is connected to the second water pipe 20, a second deep groove ball bearing groove matching the second deep groove ball bearing 9 is opened at the connection between the other end of the shell 7 and the other end of the hollow shaft 1, and the second deep groove ball bearing 9 is fixedly set at the second deep groove ball bearing groove.

[0020] In the embodiment of the present application, a rear pressure cover 10, a rear blocking plate 12, and a stacking ring 17 are included. The stacking ring 17, the rear pressure cover 10, and the rear blocking plate 12 are fixedly arranged at the other end of the hollow shaft 1 in sequence from the inside to the outside.

[0021] In the embodiment of the present application, an inner plug 15 is included, and the inner plug 15 is fixedly disposed inside the hollow shaft 1 .

[0022] In the embodiment of the present application, a straight-through pressure injection oil cup 18 is included, and a straight-through pressure injection oil cup through hole matching the straight-through pressure injection oil cup 18 is provided on the shell 7, and the straight-through pressure injection oil cup 18 is connected to the second deep groove ball bearing 9 through the straight-through pressure injection oil cup through hole.

[0023] In the embodiment of the present application, a fourth O-ring 16 is included, and the inner plug 15 and the hollow shaft 1 are directly provided with the fourth O-ring 16 .

[0024] In the embodiment of the present application, a first O-ring 2 is included, and the first O-ring 2 is arranged between the front gland 5 and the hollow shaft 1 .

[0025] In the embodiment of the present application, a first hexagonal head bolt 3 and a first light spring washer 4 are included, and the front pressure cover 5 fixes the first hexagonal head bolt 3 and the first light spring washer 4 on the housing 7.

[0026] In the embodiment of the present application, a plurality of second O-rings 8 are included, and a plurality of second O-rings 8 are provided at the connection between the housing 7 and the hollow shaft 1 .

[0027] In the embodiment of the present application, a third O-ring 11 is included, and the third O-ring 11 is fixedly disposed between the rear gland 10 and the hollow shaft 1 .

[0028] In the embodiment of the present application, a second hexagonal bolt 13 and a second light spring washer 14 are included, and the rear blocking plate 12 is fixedly arranged at the other end of the hollow shaft 1 by the second hexagonal bolt 13 and the second light spring washer 14 .

[0029] By disassembling the non-drive side rotary joint of the downline, the device found that the rotor and the housing were sealed by a sealing ring, and there was only one sealing ring. By measuring the length of the rotor, it was found that there was enough space to add multiple seals.

[0030] By modifying the non-drive side rotary joint, the original 1 sealing ring is changed to the current 3 sealing rings between the water inlet and return pipes and the shell to achieve the function of preventing water leakage, and the 1 seal between the water inlet pipe and the water return pipe is changed to 2 seals to achieve the function of preventing water cross-talk. The improvement of this device greatly increases the service life of the non-drive side rotary joint, from the original annual replacement of the non-drive side rotary joint to the current replacement of the non-drive side rotary joint every 2-3 years, reducing the cost of spare parts and replacement labor costs.

[0031] By disassembling the non-drive side rotary joint of the downline, the device found that the rotor and the housing were sealed by a sealing ring, and there was only one sealing ring. By measuring the length of the rotor, it was found that there was enough space to add multiple seals.

[0032] The device modifies the non-drive side rotary joint by changing the original one sealing ring between the water inlet and return pipes and the shell to the current three sealing rings, which is used to prevent water leakage, and changing the seal between the water inlet pipe and the water return pipe to two seals instead of one, which is used to prevent water cross-talk. The improvement of the device greatly increases the service life of the non-drive side rotary joint, from the original annual replacement of the non-drive side rotary joint to the current replacement of the non-drive side rotary joint every 2-3 years, reducing the cost of spare parts and replacement labor costs.

[0033] There are many types of hollow shaft 1, first O-ring 2, first hexagonal bolt 3, second O-ring 8, third O-ring 11, first hexagonal bolt 3, second hexagonal bolt 13, first deep groove ball bearing 6, and second deep groove ball bearing 9 that can be used in the prior art. Those skilled in the art can select them according to actual needs, and no examples are given in this embodiment.

[0034] The dimensions of the first O-ring 2, the second O-ring 8 and the third O-ring 11 are 291.69×3.53, and the materials of the first O-ring 2, the second O-ring 8 and the third O-ring 11 are nitrile rubber; the model of the first deep groove ball bearing 6 and the second deep groove ball bearing 9 is 60000 type 280, and the material of the stack ring 17 is 1Cr18Ni9Ti.

[0035] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0036] Those skilled in the art will readily appreciate other embodiments of the invention after considering the specification and practicing the invention invented herein. This application is intended to cover any variations, uses or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0037] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", "connected", and "matched" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two elements, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments of the present invention, only the structures involved in the embodiments of the present invention are involved, and other structures can refer to the general design; the above specific implementation methods further explain the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A rotary joint sealing device for a converter non-driving side, characterized in that: The hollow shaft (1) comprises a hollow shaft (1), a front pressure cover (5), a first deep groove ball bearing (6), a housing (7), a plurality of second O-rings (8), a second deep groove ball bearing (9), a first water pipe (19) and a second water pipe (20), wherein the housing (7) is sleeved on the hollow shaft (1), the front pressure cover (5) fixes the first deep groove ball bearing (6) at the connection between one end of the housing (7) and one end of the hollow shaft (1), and one end of the hollow shaft (1) is provided with a second water pipe (19) for matching with the first water pipe (19). A water pipe through hole, a second water pipe through hole matching the second water pipe (20) is formed at one end of the shell (7), the first water pipe (19) is connected to the second water pipe (20), a second deep groove ball bearing groove matching the second deep groove ball bearing (9) is formed at the connection between the other end of the shell (7) and the other end of the hollow shaft (1), the second deep groove ball bearing (9) is fixedly arranged at the second deep groove ball bearing groove, and a plurality of second O-rings (8) are arranged at the connection between the shell (7) and the hollow shaft (1).

2. A rotary joint sealing device for a converter non-driving side according to claim 1, characterized in that: It comprises a rear pressure cover (10), a rear blocking plate (12), and a stacking ring (17), wherein the stacking ring (17), the rear pressure cover (10), and the rear blocking plate (12) are fixedly arranged on the other end of the hollow shaft (1) in sequence from the inside to the outside.

3. The sealing device of the rotary joint on the non-driving side of a converter according to claim 1, characterized in that: It comprises an inner plug (15), wherein the inner plug (15) is fixedly arranged inside the hollow shaft (1).

4. The sealing device for the non-driving side rotary joint of a converter according to claim 1, characterized in that: It comprises a straight-through pressure injection oil cup (18), the housing (7) is provided with a straight-through pressure injection oil cup through hole matching the straight-through pressure injection oil cup (18), and the straight-through pressure injection oil cup (18) is connected to the second deep groove ball bearing (9) via the straight-through pressure injection oil cup through hole.

5. The sealing device of the non-driving side rotary joint of a converter according to claim 2, characterized in that: It comprises a fourth O-ring (16), and the inner plug (15) and the hollow shaft (1) are directly provided with the fourth O-ring (16).

6. The sealing device for the non-driving side rotary joint of a converter according to claim 1, characterized in that: It comprises a first O-ring (2), wherein the first O-ring (2) is arranged between the front gland (5) and the hollow shaft (1).

7. The sealing device for the non-driving side rotary joint of a converter according to claim 1, characterized in that: It comprises a first hexagonal head bolt (3) and a first light spring washer (4); the front gland (5) fixes the first hexagonal head bolt (3) and the first light spring washer (4) on the housing (7).

8. The sealing device for the rotary joint on the non-driving side of a converter according to claim 2, characterized in that: It comprises a third O-ring (11), wherein the third O-ring (11) is fixedly arranged between the rear gland (10) and the hollow shaft (1).

9. The sealing device for the non-driving side rotary joint of a converter according to claim 1, characterized in that: It comprises a second hexagonal head bolt (13) and a second light spring washer (14); the rear blocking plate (12) is fixedly arranged on the other end of the hollow shaft (1) via the second hexagonal head bolt (13) and the second light spring washer (14).

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