Rotor for rubber internal mixer

Abstract

The rotor for the rubber internal mixer comprises a shell, blades are integrally formed on the outer surface of the shell, a rotating shaft is fixedly connected to the right side of an inner cavity of the shell through screws, a cooling ring pipe is arranged in an inner cavity of the rotating shaft, the left side of the cooling ring pipe is communicated with a liquid inlet pipe, and the left side of the liquid inlet pipe is communicated with a liquid outlet pipe. A cooling ring pipe is arranged on the left side of the shell, a liquid inlet pipe is communicated with the right side of the cooling ring pipe, a liquid outlet pipe is communicated with the right side of the cooling ring pipe, a sealing cover is in threaded connection with the right side of the shell, and a protective layer is arranged on the outer surface of the shell. The cooling effect on the rotating shaft is improved, the rotating shaft is prevented from being damaged due to too high temperature, the outer surface of the shell can be protected through the protection layer, the protection effect on the shell is further improved, and the rotor cooling device has the advantage of being good in rotor cooling effect through the arrangement of the structure.

Description

Technical Field

[0001] The utility model relates to the technical field of rotors, in particular to a rotor used for a rubber internal mixer. Background Art

[0002] The internal mixer needs to rotate the rotor at high speed during operation. The blades on the outer wall of the rotor quickly mix and grind the product rubber material to improve the plasticity of the rubber material. Although the internal mixer rotor currently used can meet normal use requirements, it still has defects in actual use.

[0003] For example, the axial vortex flow rotor of an internal mixer provided by the authorization announcement number CN215202868U, when the mixed rubber enters the short spiral ridge interval, it will be naturally pushed by the short spiral ridge to the long spiral ridge interval of the rotor of another mixing chamber, and the long spiral ridge of the rotor in the other mixing chamber will push the mixed rubber back along the axial direction into its short spiral ridge interval, and then be pushed by the short spiral ridge to the long spiral ridge interval of the rotor of the first mixing chamber, so that the mixed rubber is in the two sealed In the closed mixing chamber, multiple rubber flows are formed by the pushing and rotating action of multiple spiral ridges of two rotors with opposite rotation directions, and each of them keeps rotating in different directions along the axial direction, so that the mixed rubber can quickly achieve the best fluidity and dispersibility plasticization effect; coupled with the gap between the ridges of the rotors and the inner wall of the mixing chamber, when the rotor rotates, the ridges drive the mixed rubber and the inner wall of the mixing chamber to naturally produce strong friction, extrusion, shearing and kneading effects, which speeds up the mixing speed of the mixed rubber, has high production efficiency, balanced dispersibility, and the Mooney viscosity can easily meet the requirements;

[0004] However, the patent has a poor cooling effect on the rotor during use. Since the rotor rotates at high speed, the mixing and grinding of the rubber by the blades generates greater friction, and the service life of the rotor is reduced under high temperature conditions. Therefore, it needs to be improved. For this purpose, we propose a rotor for a rubber internal mixer to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a rotor for a rubber internal mixer, which has the advantage of good cooling effect on the rotor and solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotor for a rubber internal mixer, comprising a shell, the outer surface of the shell is integrally formed with blades, the right side of the inner cavity of the shell is fixedly connected to a rotating shaft by screws, the inner cavity of the rotating shaft is provided with a cooling ring pipe, the left side of the cooling ring pipe is connected to a liquid inlet pipe, the right side of the cooling ring pipe is connected to a liquid outlet pipe, the right side of the shell is threadedly connected to a sealing cover, and the outer surface of the shell is provided with a protective layer.

[0007] As a preferred rotor for a rubber internal mixer of the utility model, the protective layer includes an anti-rust layer, a high-temperature resistant layer and a wear-resistant layer, the anti-rust layer is located on the outer surface of the shell, the high-temperature resistant layer is located on the outer surface of the anti-rust layer, and the wear-resistant layer is located on the outer surface of the high-temperature resistant layer.

[0008] As a preferred rotor for a rubber internal mixer of the utility model, a sealing ring is fixedly connected to the inner surface of the sealing cover, and the inner surface of the sealing ring is tightly fitted at the connection between the inner surface of the sealing ring and the outer surface of the rotating shaft.

[0009] As a preferred rotor for a rubber internal mixer of the utility model, a first through hole is opened on the left side of the sealing cover, and the outer surface of the rotating shaft is slidably connected to the inner surface of the first through hole.

[0010] As a preferred rotor for a rubber internal mixer of the utility model, a second through hole is opened on the right side of the shell, and the gap between the rotating shaft and the second through hole is 0.3 mm.

[0011] As a preferred rotor for a rubber internal mixer of the utility model, the anti-rust layer is an anti-rust paint coating, the high temperature resistant layer is a fluorocarbon resin coating, and the wear-resistant layer is a polytetrafluoroethylene coating.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model constructs a rotor by arranging a shell, blades and a rotating shaft. By arranging a cooling ring pipe, a liquid inlet pipe and a liquid outlet pipe, the rotating shaft can be cooled and the cooling effect on the rotating shaft can be improved to avoid damage to the rotating shaft due to excessive temperature. By arranging a protective layer, the outer surface of the shell can be protected to further improve the protective effect of the shell. By arranging the above structure, the advantage of good cooling effect on the rotor is possessed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0016] Figure 3 It is a cross-sectional view of the rotating shaft structure of the utility model;

[0017] Figure 4 It is a partial cross-sectional view of the protective layer structure of the utility model.

[0018] In the figure: 1. shell; 2. blades; 3. rotating shaft; 4. cooling ring pipe; 5. liquid inlet pipe; 6. liquid outlet pipe; 7. sealing cover; 8. protective layer; 801. anti-rust layer; 802. high temperature resistant layer; 803. wear-resistant layer; 9. sealing ring; 10. first through hole; 11. second through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-4 A rotor for a rubber internal mixer comprises a shell 1, a blade 2 is integrally formed on the outer surface of the shell 1, a rotating shaft 3 is fixedly connected to the right side of the inner cavity of the shell 1 by screws, a cooling ring pipe 4 is arranged in the inner cavity of the rotating shaft 3, a liquid inlet pipe 5 is connected to the left side of the cooling ring pipe 4, a liquid outlet pipe 6 is connected to the right side of the cooling ring pipe 4, a sealing cover 7 is threadedly connected to the right side of the shell 1, a protective layer 8 is arranged on the outer surface of the shell 1, the protective layer 8 comprises an anti-rust layer 801, a high temperature resistant layer 802 and a wear-resistant layer 803, the anti-rust layer 801 is located on the outer surface of the shell 1, and the high temperature resistant layer 802 is located on the outer surface of the anti-rust layer 801 The outer surface, the wear-resistant layer 803 is located on the outer surface of the high-temperature resistant layer 802, the inner surface of the sealing cover 7 is fixedly connected with a sealing ring 9, the inner surface of the sealing ring 9 is tightly fitted with the connection between the outer surface of the rotating shaft 3, the anti-rust layer 801 is an anti-rust paint coating, and the anti-rust paint has good anti-rust performance. The high-temperature resistant layer 802 is a fluorocarbon resin coating, and the fluorocarbon resin has good heat resistance, chemical resistance, cold resistance and low-temperature flexibility. The wear-resistant layer 803 is a polytetrafluoroethylene coating, and polytetrafluoroethylene has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stickiness, electrical insulation and good wear resistance.

[0022] In this embodiment: a rotor is constructed by arranging a shell 1, blades 2 and a rotating shaft 3; a cooling ring pipe 4, a liquid inlet pipe 5 and a liquid outlet pipe 6 are arranged to cool the rotating shaft 3, thereby improving the cooling effect on the rotating shaft 3 and preventing the rotating shaft 3 from being damaged due to excessive temperature; a protective layer 8 is arranged to protect the outer surface of the shell 1 and further improve the protective effect on the shell 1; a sealing ring 9 is arranged to improve the sealing between the rotating shaft 3 and the sealing cover 7; and the above structure has the advantage of good cooling effect on the rotor.

[0023] Embodiment 2

[0024] See also Figure 1 and 2 A first through hole 10 is opened on the left side of the sealing cover 7, the outer surface of the rotating shaft 3 is slidably connected to the inner surface of the first through hole 10, and a second through hole 11 is opened on the right side of the shell 1, and the gap between the rotating shaft 3 and the second through hole 11 is 0.3mm.

[0025] In this embodiment, by providing the first through hole 10 and the second through hole 11 , the rotating shaft 3 can be easily installed and disassembled, thereby facilitating the maintenance of the rotating shaft 3 .

[0026] The principle of this embodiment is:

[0027] When in use, the rotor is installed inside the rubber internal mixer, the liquid inlet pipe 5 is connected to the coolant delivery pipe, and the liquid outlet pipe 6 is connected to the coolant discharge pipe. During the operation of the rotor, the coolant is delivered to the liquid inlet pipe 5 through the coolant delivery pipe, and then delivered to the cooling ring pipe 4 through the liquid inlet pipe 5. The cooling ring pipe 4 cools down the rotating shaft 3, thereby improving the cooling effect on the rotating shaft 3, avoiding damage to the rotating shaft 3 due to excessive temperature, and improving the service life of the rotating shaft 3.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotor for a rubber internal mixer, comprising a housing (1), characterized in that: The outer surface of the shell (1) is integrally formed with blades (2); the right side of the inner cavity of the shell (1) is fixedly connected to a rotating shaft (3) by means of screws; the inner cavity of the rotating shaft (3) is provided with a cooling ring pipe (4); the left side of the cooling ring pipe (4) is connected to a liquid inlet pipe (5); the right side of the cooling ring pipe (4) is connected to a liquid outlet pipe (6); the right side of the shell (1) is threadedly connected to a sealing cover (7); and the outer surface of the shell (1) is provided with a protective layer (8).

2. A rotor for a rubber internal mixer according to claim 1, characterized in that: The protective layer (8) comprises an anti-rust layer (801), a high temperature resistant layer (802) and a wear-resistant layer (803); the anti-rust layer (801) is located on the outer surface of the shell (1); the high temperature resistant layer (802) is located on the outer surface of the anti-rust layer (801); and the wear-resistant layer (803) is located on the outer surface of the high temperature resistant layer (802).

3. A rotor for a rubber internal mixer according to claim 1, characterized in that: A sealing ring (9) is fixedly connected to the inner surface of the sealing cover (7), and the inner surface of the sealing ring (9) is tightly fitted at the connection with the outer surface of the rotating shaft (3).

4. A rotor for a rubber internal mixer according to claim 1, characterized in that: A first through hole (10) is provided on the left side of the sealing cover (7), and the outer surface of the rotating shaft (3) is slidably connected to the inner surface of the first through hole (10).

5. A rotor for a rubber internal mixer according to claim 1, characterized in that: A second through hole (11) is provided on the right side of the housing (1), and a gap between the rotating shaft (3) and the second through hole (11) is 0.3 mm.

6. A rotor for a rubber internal mixer according to claim 2, characterized in that: The anti-rust layer (801) is an anti-rust paint coating, the high temperature resistant layer (802) is a fluorocarbon resin coating, and the wear-resistant layer (803) is a polytetrafluoroethylene coating.

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