Surface microstructure rotary viscometer rotor for testing modifier

Abstract

The utility model discloses a surface microstructure rotary viscometer rotor for testing a modifier. The surface microstructure rotary viscometer rotor comprises a connecting rod, a rotor body, a surface microstructure layer and an auxiliary stabilizing ring, the connecting rod is used for being connected with a viscometer host, the rotor body is of a cylindrical or conical structure, and a surface microstructure layer is arranged on the outer surface of the rotor body and used for enhancing shear interface coupling with a modifier; the auxiliary stabilizing ring is arranged at the middle part or the lower part of the rotor body and is used for improving the attitude stability in the test process. The structure is helpful for improving the accuracy and repeatability of the rheological test of the modifier, and is suitable for testing a material system with a complex shearing behavior.

Description

Technical Field

[0001] This utility model relates to the technical field of stirring devices, and in particular to a surface microstructure rotary viscometer rotor for testing modifiers. Background Technology

[0002] In the field of materials performance testing, viscosity is one of the important parameters for measuring the flow characteristics of fluids. Rotary viscometers, as commonly used measuring devices, use a rotor—the core component—that comes into direct contact with the fluid being measured. The rotor generates shear force through rotation, thereby determining the viscosity value. However, traditional rotary viscometers typically employ a smooth-surface rotor design, making them only suitable for viscosity testing of conventional liquids. For fluids containing modifiers such as particles, fillers, or structurally modified components, their accuracy and representativeness are significantly insufficient.

[0003] Especially in the testing scenarios of modifiers, since modifiers often possess certain structural viscoelasticity or shear sensitivity, their flow behavior during actual use is quite complex. If the rotor surface is too smooth, slippage can easily occur between the fluid and the rotor, resulting in spurious shear boundary conditions and preventing the formation of a truly effective velocity gradient. This unrealistic shear state causes the viscosity reading to deviate from the rheological properties under actual operating conditions, affecting the accurate evaluation of the modifier's performance.

[0004] In view of this, the inventors specifically designed a surface microstructure rotating viscometer rotor for testing modifiers, which led to this invention. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this application is to provide a surface microstructure rotary viscometer rotor for testing modifiers, which at least solves the problem of inaccurate measurement caused by the overly smooth surface of traditional rotary viscometer rotors when testing modifiers, especially the inability to truly reflect the flow state of the modifier during use, thus affecting the reliability of the test results.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] This application provides a surface microstructure rotary viscometer rotor for testing modifiers, comprising:

[0010] The connecting rod has a connector at its upper end for connecting to the output shaft of the viscometer main unit;

[0011] The rotor body, connected to the lower end of the connecting rod, is generally cylindrical or conical in shape.

[0012] A surface microstructure layer is disposed on the outer surface of the rotor body to enhance the shear interface coupling between the rotor body and the modifier;

[0013] An auxiliary stabilizing ring is located in the middle or lower part of the rotor body to maintain the stability of the rotor body's attitude during testing.

[0014] In a further embodiment, the surface microstructure layer includes a plurality of annular grooves arranged at uniform intervals along the axial direction.

[0015] In a further embodiment, the distance between any two adjacent grooves is 1 mm to 3 mm.

[0016] In a further embodiment, the surface microstructure layer includes a plurality of hemispherical protrusions distributed along the circumferential direction.

[0017] In a further embodiment, the rotor body is a hollow structure, and its inner cavity is provided with multiple guide holes for fluid disturbance.

[0018] In a further embodiment, the outer surface of the rotor body is configured as a stepped conical structure that gradually increases in size from top to bottom to enhance the stability of the shear flow field.

[0019] In a further embodiment, the outer surface of the rotor body is tapered, with a taper of 5° to 15°.

[0020] In a further embodiment, the connector is a plug-in structure with hexagonal grooves for quick installation and disassembly.

[0021] In a further embodiment, the auxiliary stabilizing ring is a detachable structure, connected to the rotor body via a snap-fit ​​or threaded connection.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] By setting regularly arranged microstructure layers on the outer surface of the rotary viscometer rotor, and combining them with a hollow flow guide structure and a detachable stabilizing ring design, the coupling of the shear interface between the rotor and the modifier is effectively enhanced, improving the ability to realistically simulate the shear field and the test sensitivity. Furthermore, the adjustable conical structure and standardized installation interface further improve the ease of assembly and test stability, thereby achieving more accurate and repeatable rheological performance testing of the modifier.

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0026] In the attached diagram:

[0027] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0029] Figure 3 This utility model Figure 1 A magnified view of a portion of the image.

[0030] Explanation of the labels in the diagram:

[0031] 1. Connecting rod; 2. Connecting head; 3. Surface microstructure layer; 4. Auxiliary stabilizing ring; 5. Guide hole; 6. Rotor body. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0033] like Figures 1 to 3 As shown, this utility model provides a surface microstructure rotary viscometer rotor for testing modifiers, aiming to solve the problems of existing rotary viscometer rotors having a single surface structure, unrealistic shear boundary conditions, and low test sensitivity. In particular, it is not suitable for accurate viscosity testing of modifier fluids containing particles, fillers, or with structural viscoelastic properties.

[0034] like Figure 1 As shown, the rotor includes a connecting rod 1, a rotor body 6, a surface microstructure layer 3, and an auxiliary stabilizing ring 4. The upper end of the connecting rod 1 has a connector 2 for mechanical connection to the output shaft of the viscometer main unit. Preferably, the connector 2 adopts a hexagonal groove structure, which facilitates insertion and disassembly, and has good versatility and stability. The lower end of the connecting rod 1 is fixedly connected to the rotor body 6, which can be achieved by welding, threaded connection, or integral molding.

[0035] The rotor body 6 is cylindrical or conical, preferably a stepped conical structure with a taper ranging from 5° to 15°. This structure helps to form a gradient shear field during shear testing, enhancing the ability to distinguish and identify the flow behavior of the modifier. Furthermore, the rotor body 6 is preferably a hollow structure with multiple flow guide holes 5 inside. These flow guide holes 5 can be arranged axially or radially to regulate the internal disturbance state of the fluid, effectively avoiding problems such as fluid accumulation and bubble retention during shearing, thereby improving test stability and result repeatability.

[0036] like Figure 3As shown, the key to this embodiment lies in the surface microstructure layer 3, which is disposed on the outer surface of the rotor body 6. This layer can take the form of multiple annular grooves evenly spaced axially, hemispherical protrusions arranged along the circumferential direction, or a combination of grooves and protrusions. In a specific example, the groove spacing is set to 1 mm to 3 mm, which can be finely adjusted according to the viscosity range and particle size characteristics of the modifier. The presence of this microstructure helps to break the "slip shear boundary" formed by traditional smooth surfaces, enhances the coupling between the rotor and the fluid, approximates the boundary conditions in practical applications, and improves shear response sensitivity.

[0037] In addition, to ensure the stability of the rotor during high-speed rotation or high-viscosity testing, an auxiliary stabilizing ring 4 is provided at the bottom or middle of the rotor. This stabilizing ring and the rotor body 6 can be integrally formed, or a snap-fit ​​or threaded structure can be used to achieve a detachable connection, facilitating cleaning and maintenance. The outer diameter of the stabilizing ring is slightly smaller than the inner diameter of the viscometer test container, which can play a guiding role in limiting oscillation and preventing eccentric rotation, thereby improving the consistency of test data.

[0038] In summary, this invention improves the traditional rotary viscometer from the rotor structure level by introducing surface microstructure design, hollow flow guiding structure, and auxiliary stabilizing structure, making it more suitable for testing the shear performance of complex fluids such as modifiers. This structure not only enhances the realism and sensitivity of the shear field but also improves the accuracy and repeatability of test data while ensuring equipment compatibility and ease of operation, thus possessing significant potential for widespread application.

[0039] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A rotary viscometer rotor with surface microstructure for testing modifiers, characterized in that, include: A connecting rod (1) has a connector (2) at its upper end for connecting to the output shaft of the viscometer main unit; The rotor body (6) is connected to the lower end of the connecting rod (1) and has a cylindrical or conical structure. A surface microstructure layer (3) is disposed on the outer surface of the rotor body (6) to enhance the shear interface coupling between the rotor body (6) and the modifier; An auxiliary stabilizing ring (4) is set in the middle or lower part of the rotor body (6) to maintain rotor attitude stability during the test.

2. The rotary viscometer rotor for testing surface microstructures of modifiers according to claim 1, characterized in that: The surface microstructure layer (3) includes a plurality of annular grooves arranged uniformly along the axial direction.

3. The rotary viscometer rotor for testing surface microstructures of modifiers according to claim 2, characterized in that: The distance between any two adjacent grooves is 1 mm to 3 mm.

4. The rotary viscometer rotor for testing surface microstructures of modifiers according to claim 1, characterized in that: The surface microstructure layer (3) includes multiple hemispherical protrusions distributed along the circumferential direction.

5. A rotary viscometer rotor for testing surface microstructures of modifiers according to claim 1, characterized in that: The rotor body (6) is a hollow structure, and its inner cavity is provided with multiple guide holes (5) for fluid disturbance.

6. A rotary viscometer rotor for testing surface microstructures of modifiers according to claim 5, characterized in that: The outer surface of the rotor body (6) is configured as a stepped conical structure that gradually increases from top to bottom to enhance the stability of the shear flow field.

7. A rotary viscometer rotor for testing surface microstructures of modifiers according to claim 6, characterized in that: The outer surface of the rotor body (6) is tapered, with a taper of 5° to 15°.

8. A rotary viscometer rotor for testing surface microstructures of modifiers according to claim 1, characterized in that: The connector (2) is a plug-in structure with a hexagonal groove, which is used for quick installation and disassembly.

9. A rotary viscometer rotor for testing surface microstructures of modifiers according to claim 1, characterized in that: The auxiliary stabilizing ring (4) is a detachable structure and is connected to the rotor body (6) by means of snap-fit ​​or thread.

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