Spiral rotor of rheometer

Abstract

The utility model discloses a spiral rotor of a rheometer, which belongs to the technical field of shield muck improvement and comprises a connector used for being connected with a rheometer machine body, the connector is detachably connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a measuring head, and a spiral blade is fixedly connected outside the measuring head. And the measuring head and the spiral blade are arranged corresponding to a sample container on the rheometer machine body. According to the utility model, the problem of soil compaction can be solved, the rheological property of the soil body in the spiral conveyor in a flowing state can be reflected more truly, and the accuracy of a measurement result is improved; the measuring head extends into the sample to be measured, the change of soil rheological properties can be more sensitively sensed, powerful support is provided for accurate measurement and evaluation of soil rheological parameters, and a more accurate measurement result can provide technical support and theoretical basis for application of muck improvement in treatment of blockage and spewing of a spiral conveyor.

Description

Technical Field

[0001] This utility model belongs to the field of shield tunneling slag improvement technology, and in particular relates to a rheometer spiral rotor. Background Technology

[0002] Mechanized tunneling (TBM) is a safe, efficient, and environmentally friendly underground construction method widely used in water conservancy, transportation, mining, and other fields. It involves rotating and advancing a cutterhead, using disc cutters to break up rock and form the entire tunnel profile in a single pass. However, during earth pressure balance (EPB) TBM tunneling, the screw conveyor is prone to blockages and blowouts, affecting project progress.

[0003] To avoid clogging and blowouts in screw conveyors during mechanized tunneling, several technologies have been applied to prevent these problems. Currently, the most effective technology for addressing screw conveyor clogging and blowouts is soil remediation technology. However, specific remediation standards are lacking.

[0004] Rheometers are commonly used instruments for measuring the rheological properties of modified slag. Common rotors used in these instruments include vane rotors and ordinary screw rotors. When measuring modified slag, the inclined propeller blades of an ordinary screw rotor tend to compact the soil beneath them during rotation, causing significant fluctuations in the torque curve. Furthermore, ordinary rotors are not very sensitive to torque, thus failing to accurately reflect the rheological properties of the soil under true flow conditions within the screw conveyor.

[0005] To address the limitations of traditional rheometer rotor measurements of modified slag, and to better simulate the soil flow environment of a screw conveyor and improve the accuracy of measurement results, a new type of screw rotor is needed to more comprehensively and deeply study the rheological properties of modified slag inside a screw conveyor.

[0006] To address this, a rheometer helical rotor is proposed. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model proposes a rheometer spiral rotor.

[0008] To achieve the above objectives, this utility model provides a rheometer helical rotor, comprising: a connector for connecting to the rheometer body, the connector being detachably connected to a rotating shaft, a probe being fixedly connected to the bottom of the rotating shaft, and helical blades being fixedly connected to the outside of the probe; the probe and the helical blades being correspondingly arranged with a sample container on the rheometer body.

[0009] According to the present invention, a rheometer spiral rotor is provided, wherein the probe is cylindrical and the outer surfaces of the probe and the rotating shaft are smooth and flat.

[0010] According to the present invention, a rheometer helical rotor is provided in which the probe, the helical blades, and the rotating shaft are coaxial.

[0011] According to the present invention, a rheometer spiral rotor is provided, wherein the probe has a cavity inside.

[0012] Compared with the prior art, the present invention has the following advantages and technical effects:

[0013] The connector is used to stably connect the spiral rotor to the test rotor of the rheometer. After the rheological test begins, the rheometer body will drive the rotor to gradually decrease in height until it reaches a suitable measurement position. The geometry of the spiral blades on the probe eliminates soil compaction problems, reduces fluctuations in the test torque curve, and allows for smoother vertical flow of materials within the test chamber. This more realistically reflects the rheological properties of the soil under flow conditions inside the screw conveyor, simulates the soil flow environment of the screw conveyor to a higher degree, and improves the accuracy of measurement results. The probe extends into the sample under test, and its sensitivity to torque response to changes in yield stress and viscosity allows for a more acute perception of changes in soil rheological properties, providing strong support for the accurate measurement and evaluation of soil rheological parameters. More accurate measurement results can provide technical support and theoretical basis for the application of slag remediation in controlling clogging and gushing in screw conveyors. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram showing the application state of the helical rotor of the rheometer of this utility model;

[0016] Figure 2 This is a schematic diagram of the spiral rotor structure of the rheometer of this utility model.

[0017] In the figure: 1. Rheometer body; 2. Connector; 3. Shaft; 4. Probe; 5. Spiral blade; 6. Sample container. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1 to 2 As shown, this embodiment provides a rheometer helical rotor, including: a connector 2 for connecting to the rheometer body 1, a rotating shaft 3 detachably connected to the connector 2, a probe 4 fixedly connected to the bottom of the rotating shaft 3, and a helical blade 5 fixedly connected to the outside of the probe 4; the probe 4 and the helical blade 5 are correspondingly arranged with the sample container 6 on the rheometer body 1.

[0021] After the rheological test begins, the rheometer body 1 drives the rotor to gradually decrease in height until it reaches a suitable measurement position. The geometry of the outer helical blades 5 of the probe 4 eliminates soil compaction problems, reduces fluctuations in the test torque curve, and allows for smoother vertical flow of materials within the test chamber. This more realistically reflects the rheological properties of the soil under flow conditions inside the screw conveyor, simulates the soil flow environment of the screw conveyor to a higher degree, and improves the accuracy of the measurement results. The probe 4 extends into the sample under test, and its sensitivity to torque response to changes in yield stress and viscosity allows for a more acute perception of changes in soil rheological properties, providing strong support for the accurate measurement and evaluation of soil rheological parameters. More accurate measurement results can provide technical support and theoretical basis for the application of slag soil remediation in controlling screw conveyor blockage and gushing.

[0022] Connector 2 is used to stably connect the spiral rotor to the test rotor of the rheometer. Common methods such as snap-fit ​​and clamp-fit ​​connection can be used. The specific connection structure is existing technology and will not be described in detail here.

[0023] This embodiment provides a rheometer spiral rotor, with the probe 4 being cylindrical and both the probe 4 and the rotating shaft 3 having smooth and flat surfaces.

[0024] This design facilitates smooth soil flow.

[0025] This embodiment provides a rheometer helical rotor, in which the probe 4, helical blades 5, and rotating shaft 3 are coaxial.

[0026] Connector 2 is used to stably connect the spiral rotor to the test rotor of the rheometer. The probe 4, spiral blade 5, and rotating shaft 3 are coaxially arranged so that no axial deflection occurs during rheological measurement. The rotor speed is the same as the speed at the connection point of the test rotor of the rheometer, and the torque during the rheological measurement process can be fed back to the rheometer.

[0027] This embodiment provides a rheometer spiral rotor, with a cavity inside the probe 4.

[0028] The probe 4 is designed with a cavity inside to reduce the mass of the rotor and make the rotor rotate smoothly during rheological measurement.

[0029] In this embodiment, the diameter of the rotating shaft 3 is 7mm and the height is 72mm; the diameter of the rotor probe 4 is 40mm and the height is 200mm; the diameter of the baseline geometry of the helical blade is 228mm, the lead is defined as the axial advance of the helix during a complete rotation or 360° rotation of 75.4mm, and the total height is 188.5mm.

[0030] Work process:

[0031] To test the rheological parameters of improved sand, firstly, the helical rotor of the rheometer in this invention is stably connected to the test rotor connection of an existing rheometer via connector 2. The pre-programmed rheological regime for testing the rheological parameters is activated, allowing the rheometer to drive the helical rotor down at an appropriate rate. When the lower end of the probe 4 is about to contact the surface of the improved sand contained in the sample container 6 on the rheometer, the helical rotor is allowed to slowly descend until it stops at the specified depth within the improved sand. It must be ensured that the upper end of the probe 4 is lower than the highest point of the improved sand being tested in the sample container 6.

[0032] This invention provides high accuracy and repeatability of measurement results. It can also effectively eliminate the influence of soil compaction at the bottom of the sample on the rheological test results during the test, and simulate the real soil flow in the soil chamber of the screw conveyor to a higher degree, making it suitable for use in measurements.

[0033] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0034] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A rheometer helical rotor, characterized in that, include: A connector (2) for connecting to the rheometer body (1) is provided. The connector (2) is detachably connected to a rotating shaft (3). A probe (4) is fixed to the bottom of the rotating shaft (3). A helical blade (5) is fixed to the outside of the probe (4). The probe (4) and the helical blade (5) are correspondingly arranged with the sample container (6) on the rheometer body (1).

2. The rheometer helical rotor according to claim 1, characterized in that: The probe (4) is cylindrical, and the probe (4) and the rotating shaft (3) have smooth and flat surfaces.

3. The rheometer helical rotor according to claim 1, characterized in that: The probe (4), the spiral blade (5), and the rotating shaft (3) are coaxial.

4. The rheometer helical rotor according to claim 1, characterized in that: The probe (4) has a cavity inside.

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