Internal mixer rotor

Abstract

The utility model relates to the technical field of rotors of internal mixers, in particular to a rotor of an internal mixer, which can effectively avoid the axial movement of the rotor and improve the running stability of the rotor. Comprising a rotor main shaft, an extrusion section is fixedly arranged in the middle of the rotor main shaft in an integrally formed mode, two mixing sections and two shearing sections are symmetrically arranged on the rotor main shaft in an integrally formed mode, the two mixing sections are located on the two sides of the extrusion section, and the two shearing sections are located on the two sides of the two mixing sections correspondingly; the left end and the right end of the rotor main shaft are fixedly connected with two sets of connecting shafts in an integrally-formed mode, the two sets of positioning sleeves are arranged on the two sets of connecting shafts in a sleeving mode through cooperation with positioning keys, the inner sides of the two sets of positioning sleeves make contact with the outer sides of the two sets of positioning bearings, the two sets of connecting shafts are sleeved with fixing sleeves, and the two sets of fixing sleeves are provided with fixing screw pins in a screwed mode. The two sets of fixing screw pins are screwed in the two sets of threaded holes respectively, and the inner sides of the two sets of fixing sleeves make contact with the outer sides of the two sets of positioning sleeves respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers' rotors, in particular to a mixer rotor. Background Art

[0002] The enclosed rubber mixer is simply called a mixer, which is mainly used for rubber plasticizing and mixing. Among them, the mixer rotor is the most important working part. When the mixer works, two or four rotors rotate relatively, clamping the materials from the feeding port and bringing them into the roll gap, where they are squeezed and sheared by the rotors.

[0003] If the mixer rotor is made of high wear-resistant and high corrosion-resistant materials as a whole, it will undoubtedly increase the cost, and when the hardness of the used materials is relatively high, the brittleness will also increase accordingly.

[0004] During long-term operation, the existing mixer rotors are prone to axial displacement, which will affect the smooth operation of the rotors. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a mixer rotor that can effectively avoid axial displacement of the rotor and improve the smooth operation of the rotor.

[0006] Technical Solution

[0007] To achieve the above object, the utility model provides the following technical solution: A mixer rotor includes a rotor main shaft. An extrusion section is integrally formed and fixed in the middle of the rotor main shaft. Two groups of mixing sections and two groups of shearing sections are integrally formed and symmetrically arranged on the rotor main shaft. The two groups of mixing sections are located on both sides of the extrusion section, and the two groups of shearing sections are respectively located on both sides of the two groups of mixing sections. The positioning mechanism includes two groups of positioning bearings and two groups of positioning sleeves. Two groups of connecting shafts are integrally formed and fixed at the left and right ends of the rotor main shaft. The two groups of positioning bearings are respectively sleeved on the two groups of connecting shafts, and the inner sides of the two groups of positioning bearings respectively abut against the left and right ends of the rotor main shaft. Key grooves are provided on the outer walls of the two groups of connecting shafts and the inner walls of the two groups of positioning sleeves. Positioning keys are arranged in the key grooves. The two groups of positioning sleeves are respectively sleeved on the two groups of connecting shafts through the cooperation with the positioning keys, and the inner sides of the two groups of positioning sleeves respectively contact the outer sides of the two groups of positioning bearings. Fixed sleeves are sleeved on the two groups of connecting shafts, and fixing bolts are screwed on the two groups of fixed sleeves. Threaded holes are provided on the two groups of connecting shafts, and the two groups of fixing bolts are respectively screwed into the two groups of threaded holes. The inner sides of the two groups of fixed sleeves respectively contact the outer sides of the two groups of positioning sleeves.

[0008] Preferably, the two groups of positioning bearings both adopt tapered roller bearings.

[0009] Preferably, disassembly holes are provided through the two groups of fixing bolts.

[0010] Preferably, there are three key grooves on the outer walls of the two groups of connecting shafts and the inner walls of the two groups of positioning sleeves, and they are all annularly and equally spaced.

[0011] Preferably, the surfaces of the rotor main shaft, the extrusion section, the mixing section and the shearing section are all coated with a composite alloy layer.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: when in use, first put the positioning bearing on the two groups of connecting shafts, then put the positioning sleeve on the connecting shafts through the cooperation of the positioning key, then put the fixing sleeve on the connecting shafts, and screw the fixing pin into the threaded hole, and then install it into the internal mixer through the positioning bearing, and then connect it with the driving structure outside the internal mixer through the connecting shaft. During the driving process, the internal mixer rotor rotates. Through the restriction of the positioning sleeve on the positioning bearing, the restriction of the fixing sleeve on the positioning sleeve, and the boss at the connection of the connecting shaft and the rotor main shaft, the axial movement of the rotor main shaft can be prevented. During assembly, the fit between the positioning sleeve and the connecting shaft and the fit between the fixing sleeve and the connecting shaft both adopt interference fit, which can further prevent the positioning sleeve and the fixing sleeve from loosening axially, so as to effectively avoid the situation of the rotor generating axial movement and improve the running stability of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the axonometric structure schematic diagram of the present utility model;

[0014] Figure 2 is the front view structure schematic diagram of the present utility model during installation;

[0015] Figure 3 is the axonometric partial structure schematic diagram of the present utility model;

[0016] Figure 4 is the axonometric partial structure schematic diagram of the cooperation and installation of the positioning sleeve and the positioning key in the present utility model;

[0017] Figure 5 is the sectional structure schematic diagram of the installation of the positioning sleeve and the connecting shaft of the present utility model;

[0018] Reference numerals in the drawings: 1, rotor main shaft; 2, extrusion section; 3, mixing section; 4, shearing section; 5, connecting shaft; 6, positioning bearing; 7, key groove; 8, positioning key; 9, positioning sleeve; 10, fixing sleeve; 11, fixing pin; 12, disassembly and assembly hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model. Embodiment

[0020] Please refer to Figures 1 - 5, A rotor of a mixer of the present utility model includes a rotor main shaft 1. A pressing section 2 is integrally formed and fixedly arranged in the middle of the rotor main shaft 1. Two sets of mixing sections 3 and two sets of shearing sections 4 are integrally formed and symmetrically arranged on the rotor main shaft 1. The two sets of mixing sections 3 are located on both sides of the pressing section 2, and the two sets of shearing sections 4 are respectively located on both sides of the two sets of mixing sections 3. Two sets of connecting shafts 5 are integrally formed and fixedly connected to the left and right ends of the rotor main shaft 1. Two sets of positioning bearings 6 are respectively sleeved on the two sets of connecting shafts 5, and the inner sides of the two sets of positioning bearings 6 respectively abut against the left and right ends of the rotor main shaft 1. Key grooves 7 are provided on the outer walls of the two sets of connecting shafts 5 and the inner walls of the two sets of positioning sleeves 9. Positioning keys 8 are arranged in the key grooves 7. The two sets of positioning sleeves 9 are respectively sleeved on the two sets of connecting shafts 5 through the cooperation with the positioning keys 8, and the inner sides of the two sets of positioning sleeves 9 respectively contact the outer sides of the two sets of positioning bearings 6. Fixed sleeves 10 are sleeved on the two sets of connecting shafts 5. Fixed bolts 11 are screwed on the two sets of fixed sleeves 10. Threaded holes are provided on the two sets of connecting shafts 5. The two sets of fixed bolts 11 are respectively screwed into the two sets of threaded holes. The inner sides of the two sets of fixed sleeves 10 respectively contact the outer sides of the two sets of positioning sleeves 9. When in use, first sleeve the positioning bearings 6 on the two sets of connecting shafts 5, then sleeve the positioning sleeves 9 on the connecting shafts 5 through the cooperation of the positioning keys 8, then sleeve the fixed sleeves 10 on the connecting shafts 5, and screw the fixed bolts 11 into the threaded holes. Then install them into the mixer through the positioning bearings 6, and then connect them to the driving structure outside the mixer through the connecting shafts 5. During the driving process, the mixer rotor rotates. Through the restriction of the positioning sleeve 9 on the positioning bearing 6, the restriction of the fixed sleeve 10 on the positioning sleeve 9, and the boss at the connection between the connecting shaft 5 and the rotor main shaft 1, axial movement of the rotor main shaft 1 can be prevented. During assembly, the fit between the positioning sleeve 9 and the connecting shaft 5 and the fit between the fixed sleeve 10 and the connecting shaft 5 both adopt interference fits, which can further prevent axial loosening of the positioning sleeve 9 and the fixed sleeve 10, thereby effectively avoiding the situation of axial movement of the rotor and improving the running stability of the rotor.

[0021] Both of the two sets of positioning bearings 6 adopt tapered roller bearings. By adopting tapered roller bearings, during operation, an axial component force pointing to the pressing section 2 can be provided, and the two sets of bearings are symmetric, so that the forces are balanced with each other, further preventing axial movement.

[0022] Disassembly holes 12 are provided through the two sets of fixed bolts 11. By providing the disassembly holes 12, it can be more convenient to screw the fixed bolts 11.

[0023] Three key grooves 7 are provided on the outer walls of the two sets of connecting shafts 5 and the inner walls of the two sets of positioning sleeves 9, and they are all annularly and equally spaced. By annularly and equally spacing the key grooves 7 on the connecting shafts 5 and the positioning sleeves 9, when assembling through the positioning keys 8, the positioning sleeve 9 can be more firmly and stably fitted with the connecting shaft 5.

[0024] The surfaces of the rotor main shaft 1, the extrusion section 2, the mixing section 3, and the shearing section 4 are all coated with a composite alloy layer. By coating the composite alloy layer on the surfaces of the rotor main shaft 1, the extrusion section 2, the mixing section 3, and the shearing section 4, and using nickel-based alloy powder for the composite alloy layer, the wear resistance and corrosion resistance of the rotor can be effectively enhanced, and the service life can be extended.

[0025] For a mixer rotor of the present utility model, its working principle is as follows. When in use, first, the positioning bearing 6 is sleeved on the two groups of connecting shafts 5, then the positioning sleeve 9 is sleeved on the connecting shaft 5 through the cooperation of the positioning key 8. Next, the fixing sleeve 10 is sleeved on the connecting shaft 5, and the fixing pin 11 is screwed into the threaded hole. Then, it is installed into the mixer through the positioning bearing 6, and then connected to the driving structure outside the mixer through the connecting shaft 5. During the driving process, the mixer rotor rotates. Through the restriction of the positioning sleeve 9 on the positioning bearing 6, the restriction of the fixing sleeve 10 on the positioning sleeve 9, and the boss at the connection between the connecting shaft 5 and the rotor main shaft 1, axial displacement of the rotor main shaft 1 can be prevented. During assembly, the cooperation between the positioning sleeve 9 and the connecting shaft 5 and the cooperation between the fixing sleeve 10 and the connecting shaft 5 both adopt interference fits, which can further prevent axial loosening of the positioning sleeve 9 and the fixing sleeve 10.

[0026] The installation method, connection method, or setting method of a mixer rotor of the present utility model are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented. The tapered roller bearings of a mixer rotor of the present utility model are purchased on the market, and those skilled in the art only need to install and operate according to the attached instruction manual.

[0027] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An internal mixer rotor, comprising a rotor main shaft (1), characterized in that: Also includes a positioning mechanism; A rotor main shaft (1), wherein an extrusion section (2) is integrally formed and fixedly provided in the middle of the rotor main shaft (1), and two groups of mixing sections (3) and two groups of shearing sections (4) are integrally formed and symmetrically provided on the rotor main shaft (1), wherein the two groups of mixing sections (3) are located on both sides of the extrusion section (2), and the two groups of shearing sections (4) are respectively located on both sides of the two groups of mixing sections (3); A positioning mechanism, the positioning mechanism comprising two groups of positioning bearings (6) and two groups of positioning sleeves (9), the left and right ends of the rotor main shaft (1) are integrally formed and fixedly connected with two groups of connecting shafts (5), the two groups of positioning bearings (6) are respectively sleeved on the two groups of connecting shafts (5), and the inner sides of the two groups of positioning bearings (6) are respectively against the left and right ends of the rotor main shaft (1), the outer walls of the two groups of connecting shafts (5) and the inner walls of the two groups of positioning sleeves (9) are both provided with keyways (7), and positioning keys (8) are provided in the keyways (7), and the two groups of positioning The sleeves (9) are respectively mounted on the two groups of connecting shafts (5) by cooperating with the positioning keys (8), and the inner sides of the two groups of positioning sleeves (9) are respectively in contact with the outer sides of the two groups of positioning bearings (6). The two groups of connecting shafts (5) are both mounted with fixing sleeves (10), and the two groups of fixing sleeves (10) are both screwed with fixing screw pins (11). The two groups of connecting shafts (5) are both provided with threaded holes, and the two groups of fixing screw pins (11) are respectively screwed in the two groups of threaded holes. The inner sides of the two groups of fixing sleeves (10) are respectively in contact with the outer sides of the two groups of positioning sleeves (9).

2. The internal mixer rotor according to claim 1, characterized in that: Both sets of locating bearings (6) are tapered roller bearings.

3. A rotor for an internal mixer as claimed in claim 2, characterized in that: Both groups of fixing screw pins (11) are provided with disassembly holes (12) passing through them.

4. The internal mixer rotor according to claim 3, characterized in that: The keyways (7) on the outer walls of the two groups of connecting shafts (5) and the inner walls of the two groups of positioning sleeves (9) are each provided with three groups, and are all distributed in an annular manner with equal spacing.

5. The internal mixer rotor according to claim 4, characterized in that: The surfaces of the rotor main shaft (1), the extrusion section (2), the mixing section (3) and the shearing section (4) are all coated with a composite alloy layer.

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