Rotary sealing device

Abstract

The utility model discloses a rotary sealing device, and belongs to the technical field of pyrolyzers. The reaction kettle sealing device mainly comprises a sealing shell which is arranged on a reaction kettle; the shaft sleeve is rotationally connected to the center of the sealing shell; and the double-end-face sealing mechanism is arranged on the outer side of the shaft sleeve in a sleeving mode and is provided with a sliding ring, the sliding ring is arranged on the outer side of the shaft sleeve in a sleeving mode, a circular sliding groove is formed in the shaft sleeve, a positioning pin is fixedly installed on the sliding ring, the positioning pin protrudes out of the sliding groove, and the positioning pin is located in the center of the sliding groove. According to the rotary sealing device, when the rotating shaft is affected by high temperature, matching of the rotating shaft and the sealing device cannot be affected, water cooling is conducted through the cooling water cavity, and therefore the service life of the sealing device is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of pyrolyzers, and specifically to a rotary sealing device. Background Art

[0002] A vertical stirring vacuum pyrolyzer is a device used for pyrolyzing materials, and is usually applied in industries such as chemical engineering, energy, and material recycling. Its main function is to pyrolyze materials through heating and stirring in a vacuum environment to decompose organic substances and convert them into products such as gas, oil, and solid residues.

[0003] In order to prevent gas leakage in the vacuum pyrolyzer during operation, a rotary sealing device is usually installed at the connection end of the pyrolyzer and the rotating shaft to ensure the maintenance of the vacuum environment of the vacuum pyrolyzer through the rotary sealing device.

[0004] However, the internal temperature of the vacuum pyrolyzer is relatively high during use. Therefore, when the rotating shaft is affected by high temperature, the rotating shaft will expand and extend axially. This extension will change the length of the shaft and affect the cooperation between the rotating shaft and the sealing device. Over time, it will reduce the service life of the sealing device. Therefore, it is necessary to provide a rotary sealing device to solve the above problems.

[0005] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application, and therefore, it may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by this application is: to provide a rotary sealing device that can achieve that when the rotating shaft is affected by high temperature, it will not affect the cooperation between the rotating shaft and the sealing device, and is cooled by water through a cooling water chamber, thereby extending the service life of the sealing device.

[0007] The technical solution adopted by this application to solve its technical problems is: a rotary sealing device, which is used to connect the reaction kettle of the pyrolyzer and the rotating shaft, and includes:

[0008] A sealing shell, which is installed on the reaction kettle;

[0009] A shaft sleeve, which is rotatably connected to the center of the sealing shell;

[0010] A double-end face sealing mechanism, which is sleeved on the outside of the shaft sleeve, and the double-end face sealing mechanism has:

[0011] A sliding ring, which is sleeved on the outside of the shaft sleeve. A circular chute is provided on the shaft sleeve. A positioning pin is fixedly installed on the sliding ring, and the positioning pin protrudes into the chute, and the positioning pin is located at the center of the chute.

[0012] Further, the height of the bushing is higher than that of the sealing housing, and a clamping bolt is fixedly installed at the upper end of the bushing.

[0013] Further, a cooling water chamber is arranged inside the sealing housing, and the cooling water chamber is located outside the double-end face sealing mechanism.

[0014] Further, a flange base is fixedly installed at the lower end of the sealing housing, a mating groove is formed at the upper end of the reactor, and a fixing bolt is threadedly connected inside the flange base and the mating groove.

[0015] Further, three groups of sealing rings are fixedly installed between the bushing and the rotating shaft from top to bottom. The three groups of sealing rings are set as O-shaped and are made of high-temperature-resistant perfluoroether material.

[0016] Further, a bearing is arranged inside the sealing housing, and a packing sealing section is added between the bearing and the double-end face sealing mechanism.

[0017] The beneficial effect of the present application is that: a rotating sealing device provided by the present application, by arranging a double-end face sealing mechanism, when the rotating shaft is affected by high temperature, a certain sliding space between the rotating shaft and the bushing is ensured through the sliding groove, which will not affect the cooperation between the rotating shaft and the sealing device, and water cooling is carried out through the cooling water chamber, thereby prolonging the service life of the sealing device.

[0018] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the present application in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of this application are used to provide a further understanding of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application.

[0020] In the drawings:

[0021] Figure 1 is an overall schematic diagram of a rotating sealing device in the present application;

[0022] Figure 2 is Figure 1 an enlarged schematic diagram of area A in

[0023] Among them, each reference numeral in the drawings:

[0024] 1. Sealing housing; 11. Flange base; 12. Fixing bolt; 13. Bushing; 14. Clamping bolt; 15. Sealing ring;

[0025] 2. Double-end face sealing mechanism; 21. Sliding ring; 22. Positioning pin; 23. Chute;

[0026] 3. Bearing; 4. Reactor; 5. Rotating shaft; 6. Cooling water chamber. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present application in detail with reference to the drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] As Figure 1 shown, the present application provides a rotary sealing device, which includes a reactor 4 for pyrolyzer and a rotating shaft 5 rotatably connected to the upper end of the reactor 4, and the rotary sealing device is installed at the connection end of the reactor 4 and the rotating shaft 5. The rotary sealing device includes a sealing shell 1, and a bushing 13 is rotatably connected at the center of the sealing shell 1. The sealing shell 1 is sleeved outside the rotating shaft 5 through the bushing 13 conveniently;

[0030] Meanwhile, a flange base 11 is fixedly installed at the lower end of the sealing shell 1, and a mating groove (not marked in the figure) is opened at the upper end of the reactor 4. The flange base 11 and the mating groove are internally threaded with fixing bolts 12. During installation, first, the sealing shell 1 is sleeved on the rotating shaft 5 through the bushing 13, and then the flange base 11 is fixed to the mating groove, and the fixing bolts 12 are screwed in and fixed, so as to fix the sealing shell 1 to the upper end of the reactor 4.

[0031] In the present application, the height of the bushing 13 is higher than that of the sealing shell 1, and a clamping bolt 14 is fixedly installed at the upper end of the bushing 13. During installation, after the bushing 13 and the clamping bolt 14 are sleeved on the rotating shaft 5, the clamping bolt 14 is tightened, so as to fix the bushing 13 on the rotating shaft 5 and make them rotate synchronously.

[0032] Moreover, three sealing rings 15 are fixedly installed between the bushing 13 and the rotating shaft 5 from top to bottom. The sealing rings 15 are set as O-shaped and are made of high-temperature-resistant perfluoroether material. The relative static sealing between the rotating shaft 5 and the bushing 13 can be realized through the three sealing rings 15.

[0033] A bearing 3 is also provided between the bushing 13 and the sealing housing 1. The outer wall of the bearing 3 is fixedly installed on the inner wall of the sealing housing 1, and the inner wall of the bearing 3 is fixedly installed on the outer wall of the bushing 13. Therefore, the rotation of the rotating shaft 5 can drive the bushing 13 to rotate through the bearing 3 without affecting the sealing housing 1.

[0034] As Figure 1 - Figure 2 shown, in order to improve the sealing performance of the rotating shaft 5 and the bushing 13, a double-end face sealing mechanism 2 is sleeved outside the bushing 13. In this application, the double-end face sealing mechanism 2 is a Chinese patent with the publication number: CN218152357U. And a packing seal section is additionally provided inside the sealing housing 1. The packing is made of temperature-resistant and wear-resistant aramid with four corners, which plays an auxiliary sealing role. The packing seal section is located between the bearing 3 and the double-end face sealing mechanism 2. Therefore, through the organic combination of the double-end face sealing mechanism 2 and the packing seal, the sealing performance of the rotating shaft 5 is further improved, ensuring the vacuum degree of the whole equipment.

[0035] At the same time, the double-end face sealing mechanism 2 has a sliding ring 21 (the moving ring assembly in the above-mentioned patent). The sliding ring 21 is sleeved outside the bushing 13. A positioning pin 22 is fixedly installed on the sliding ring 21, and a circular chute 23 is provided on the bushing 13. The positioning pin 22 protrudes into the chute 23. In the normal state, the positioning pin 22 is located at the center of the chute 23;

[0036] In order to reduce the influence of high temperature on the whole sealing device, a cooling water cavity 6 is provided inside the sealing housing 1. The cooling water cavity 6 is located outside the double-end face sealing mechanism 2. In this application, the cooling water in the cooling water cavity 6 is conducted and cooled in a way that the water enters from the lower part and exits from the upper part;

[0037] Thus, when the rotating shaft 5 expands and extends under the influence of high temperature, a certain sliding space between the rotating shaft 5 and the bushing 13 is ensured through the chute 23, which will not affect the cooperation between the rotating shaft 5 and the sealing device. And water cooling is carried out through the cooling water cavity 6, thereby prolonging the service life of the sealing device.

[0038] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A rotary sealing device, which is used to connect the reactor and the rotating shaft of a pyrolyzer, characterized in that: include: A sealing shell (1), the sealing shell (1) being installed on the reaction kettle; A shaft sleeve (13) rotatably connected to the center of the sealing shell (1); A double-end face sealing mechanism (2), the double-end face sealing mechanism (2) is sleeved on the outer side of the shaft sleeve (13), and the double-end face sealing mechanism (2) comprises: A sliding ring (21) is sleeved on the outer side of the shaft sleeve (13), a circular sliding groove (23) is provided on the shaft sleeve (13), a positioning pin (22) is fixedly installed on the sliding ring (21), the positioning pin (22) protrudes from the sliding groove (23), and the positioning pin (22) is located at the center of the sliding groove (23).

2. A rotary sealing device according to claim 1, characterized in that: The height of the shaft sleeve (13) is higher than the height of the sealing shell (1), and a clamping bolt (14) is fixedly mounted on the upper end of the shaft sleeve (13).

3. A rotary sealing device according to claim 1, characterized in that: A cooling water chamber (6) is provided in the sealing shell (1), and the cooling water chamber (6) is located outside the double-end sealing mechanism (2).

4. A rotary sealing device according to claim 1, characterized in that: A flange base (11) is fixedly mounted on the lower end of the sealing shell (1), a matching groove is provided on the upper end of the reaction kettle, and a fixing bolt (12) is connected between the flange base (11) and the inner thread of the matching groove.

5. A rotary sealing device according to claim 1, characterized in that: Three groups of sealing rings (15) are fixedly installed between the shaft sleeve (13) and the rotating shaft from top to bottom. The three groups of sealing rings (15) are arranged in O-type and are made of high-temperature resistant perfluoroether material.

6. A rotary sealing device according to claim 1, characterized in that: A bearing (3) is arranged inside the sealing shell (1), and a packing sealing section is additionally provided between the bearing (3) and the double-end sealing mechanism (2).

Images