A compounding premixing apparatus with online viscosity monitoring

Abstract

The utility model discloses a kind of compound premixing equipment with online viscosity monitoring, including tank, the top of tank is provided with feeder, bottom is provided with discharge pipe, and premixing disperser is installed below the discharge channel of feeder;Stirring shaft is installed in the center of tank, and stirring screw is arranged in the middle part of stirring shaft, and flow guide sleeve is concentrically arranged around stirring screw;The bottom of tank is arc-shaped annular groove structure, and the bottom of flow guide sleeve is provided with conical outlet cover parallel to annular groove structure;Viscosity sensor is installed in the middle height position of flow guide sleeve on the peripheral wall of tank, and the viscosity sensor is connected with display host computer.

Description

Technical Field

[0001] This utility model relates to the field of mixing machinery and equipment technology, and in particular to a compound premixing device with online viscosity monitoring. Background Technology

[0002] In the production of chemicals, pharmaceuticals, or food, it is often necessary to compound and premix raw materials. However, some raw materials have high viscosity, making it difficult to mix them evenly and easily creating dead zones. At the same time, online viscometers are easily affected by the flow state. For raw materials with high viscosity accuracy requirements, dynamic viscosity monitoring is necessary, but factors such as turbulence from stirring can easily affect the accuracy of dynamic monitoring. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a compound premixing device with online viscosity monitoring, so as to solve the technical problems in the background art mentioned above.

[0004] The technical solution of this utility model is as follows:

[0005] A compound premixing device with online viscosity monitoring includes a tank. A feeder is located at the top of the tank, and a discharge pipe is located at the bottom. A premixing disperser is installed below the discharge channel of the feeder. A stirring shaft is installed at the center of the tank, with a stirring spiral in the middle of the shaft. A guide sleeve is concentrically arranged around the stirring spiral. The bottom of the tank has an arc-shaped annular groove structure, and a conical discharge mask parallel to the annular groove structure is located at the bottom of the guide sleeve. A viscosity sensor is installed on the peripheral wall of the tank at a position at the middle height of the guide sleeve, and the viscosity sensor is connected to a display host.

[0006] Furthermore, the bottom center of the tank has an arc-shaped boss, which, together with the rounded corners of the bottom of the tank's peripheral wall, forms a ring groove structure at the bottom of the tank.

[0007] Furthermore, a bushing B is provided at the top of the arc-shaped boss, a thrust bearing B is installed inside the bushing B, a thrust bearing A is installed at the center of the top of the tank, and the stirring shaft is installed in the tank through the thrust bearing A and the thrust bearing B. The top of the stirring shaft is connected to the drive motor for transmission.

[0008] Furthermore, the feeder is an annular inverted conical cavity, and both the feeder and the discharge channel are arranged around the stirring shaft. Several feed pipes are connected to the peripheral wall of the feeder. A bushing A is set at the center of the top of the feeder for installing the thrust bearing A. The premixing disperser adopts a distribution plate, which is installed on the stirring shaft and located below the discharge channel.

[0009] Furthermore, the drive motor is mounted above the feeder via a bracket connected to the top of the tank and is connected to the stirring shaft via a coupling.

[0010] Furthermore, several horizontal beams connected to the tank's perimeter wall are provided at the top and bottom of the outer wall of the guide sleeve, thereby fixing the guide sleeve inside the tank.

[0011] Furthermore, flanges are provided on the peripheral wall of the tank for the movable mounting of viscosity sensors.

[0012] The advantages of this utility model are:

[0013] This invention features a premixed disperser installed below the discharge channel, which not only reduces the difficulty of mixing high-viscosity materials but also minimizes the impact of instantaneous flow field disturbances caused by feeding or pumping on viscosity measurement, thereby improving the accuracy of viscosity monitoring. The guide sleeve can directionally guide the flow field, making this device suitable for high-viscosity mixing systems and ensuring particle suspension or rapid homogenization. Simultaneously, it isolates the turbulent zone of shear mixing, providing a stable, high-shear-rate measurement environment for the viscosity sensor area, thus improving the accuracy of real-time viscosity measurement. The bottom of the guide sleeve is equipped with a conical outlet mask parallel to the annular groove structure, which prevents dead zones during circulation for materials with high viscosity, thus avoiding interference with the mixing effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is an internal sectional view of the present invention;

[0016] Figure 3 for Figure 2 A magnified view of part A in the diagram.

[0017] In the diagram: 1-tank body, 11-arc-shaped boss, 12-discharge pipe, 2-drive motor, 21-support, 3-stirring shaft, 31-distribution plate, 32-stirring spiral, 33-thrust bearing A, 331-sleeve A, 34-thrust bearing B, 341-sleeve B, 4-feeder, 41-feed pipe, 42-discharge channel, 5-guide sleeve, 51-conical inlet mask, 52-conical outlet mask, 53-crossbeam, 6-viscosity sensor, 61-display host. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] like Figures 1-3 As shown:

[0020] A compound premixing device with online viscosity monitoring includes a tank 1. A feeder 4 is located at the top of the tank 1, and a discharge pipe 12 is located at the bottom. A premixing disperser is installed below the discharge channel 42 of the feeder 4. A stirring shaft 3 is installed at the center of the tank 1, with a stirring spiral 32 in the middle. A guide sleeve 5 is concentrically arranged around the stirring spiral 32 (several horizontal beams 53 can be installed at the top and bottom of the outer wall of the guide sleeve 5, connecting to the periphery of the tank 1, thereby fixing the guide sleeve 5 inside the tank 1). The bottom of the tank 1 has an arc-shaped annular groove structure, and a conical outlet mask 52 parallel to the annular groove structure is provided at the bottom of the guide sleeve 5 (a conical inlet mask 51 can be provided at the top as needed). A viscosity sensor 6 is installed on the periphery of the tank 1 at a height of the middle of the guide sleeve 5. The viscosity sensor 6 is connected to a display host 61 (the host can be installed on the tank 1 for on-site monitoring or installed in a monitoring center for remote monitoring).

[0021] This invention is mainly for the premixing of high-viscosity materials with high viscosity requirements. First, a premixing disperser, such as a spiral blade, cross grid, or corrugated plate assembly, is installed below the discharge channel 42. It can achieve rapid preliminary mixing of materials before they enter the main mixing zone by dividing, rotating, and shearing the flow streams. It is especially suitable for blending systems with large viscosity differences or easy stratification. Another important function is to reduce the impact of instantaneous flow field disturbances caused by feeding or pumping on viscosity measurement, thereby improving the accuracy of viscosity monitoring.

[0022] Secondly, the guide sleeve 5 can directionally guide the flow field, forcing the fluid to flow axially at high speed within the cylinder, forming a highly controllable flow channel. This is particularly suitable for high-viscosity mixing systems, ensuring particle suspension or rapid homogenization. Simultaneously, it isolates the turbulent flow zone of shear mixing and the viscosity sensor 6 area. The material in the area between the tank 1 and the guide sleeve 5 is in stable laminar flow, thus providing a stable, high-shear-rate measurement environment for the viscosity sensor 6 area, thereby improving the accuracy of real-time viscosity measurement. The bottom of the guide sleeve 5 is equipped with a conical outlet mask 52 parallel to the annular groove structure, which can prevent dead zones during circulation for materials with high viscosity, thus avoiding impact on the mixing effect.

[0023] An arc-shaped boss 11 can be machined at the center of the bottom of the tank body 1, which, together with the rounded corners of the bottom of the tank body 1, forms an annular groove structure at the bottom of the tank body 1. Considering that the stirring shaft 3 is for axial mixing and is mainly subjected to axial force, a bushing B341 can be provided at the top of the arc-shaped boss 11. A thrust bearing B34 is installed inside the bushing B341. A thrust bearing A33 is installed at the center of the top of the tank body 1. The stirring shaft 3 is installed inside the tank body 1 through the thrust bearing A33 and the thrust bearing B34. The top of the stirring shaft 3 is connected to the drive motor 2 for transmission.

[0024] As an optimized solution, the feeder 4 is an annular inverted conical cavity, and both the feeder 4 and the discharge channel 42 are arranged around the stirring shaft 3. Several feed pipes 41 are connected to the peripheral wall of the feeder 4. A bushing A331 is set at the top center of the feeder 4 for installing the thrust bearing A33. The premixing disperser adopts a distribution plate 31, which is installed on the stirring shaft 3 and located below the discharge channel 42. In this way, the stirring shaft 3 can drive the distribution plate 31 to form a premixing disperser. Moreover, it is located in the center position, and the material is evenly dispersed after centrifugation, which can further reduce the instantaneous flow field disturbance.

[0025] Based on the above scheme, the drive motor 2 is mounted above the feeder 4 via a bracket 21 connected to the top of the tank 1, and is connected to the stirring shaft 3 via a coupling.

[0026] Since the viscosity sensor 6 is an electronic component and is a consumable part, a flange can be provided on the circumferential wall of the tank to allow for the movable installation of the viscosity sensor 6, facilitating subsequent maintenance and replacement.

[0027] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A compounding premixing apparatus with online viscosity monitoring, characterized by: The device includes a tank body, with a feeder at the top and a discharge pipe at the bottom. A premixed disperser is installed below the discharge channel of the feeder. A stirring shaft is installed at the center of the tank body, with a stirring spiral in the middle of the stirring shaft and a guide sleeve concentrically arranged around the stirring spiral. The bottom of the tank body has an arc-shaped annular groove structure, and a conical discharge mask parallel to the annular groove structure is installed at the bottom of the guide sleeve. A viscosity sensor is installed on the peripheral wall of the tank body at a height of the middle of the guide sleeve, and the viscosity sensor is connected to the display host.

2. A compound premixing apparatus with online viscosity monitoring as claimed in claim 1 characterized in that: The bottom center of the tank has an arc-shaped boss, which, together with the rounded corners of the bottom of the tank's peripheral wall, forms a ring groove structure at the bottom of the tank.

3. A compound premixing apparatus with online viscosity monitoring as claimed in claim 2, wherein: The top of the arc-shaped boss is provided with a bushing B, and a thrust bearing B is installed inside the bushing B. A thrust bearing A is installed at the center of the top of the tank. The stirring shaft is installed in the tank through the thrust bearing A and the thrust bearing B. The top of the stirring shaft is connected to the drive motor for transmission.

4. A compound premixing apparatus with online viscosity monitoring as claimed in claim 3, wherein: The feeder is an annular inverted conical cavity, and both the feeder and the discharge channel are arranged around the stirring shaft. Several feed pipes are connected to the peripheral wall of the feeder. A bushing A is set at the center of the top of the feeder for installing the thrust bearing A. The premixing disperser adopts a distribution plate, which is installed on the stirring shaft and located below the discharge channel.

5. A compound premixing apparatus with online viscosity monitoring as claimed in claim 4, wherein: The drive motor is mounted above the feeder via a bracket connected to the top of the tank and is connected to the stirring shaft via a coupling.

6. The compound premixing device with online viscosity monitoring according to any one of claims 1-4, characterized in that: Several horizontal beams connected to the tank's peripheral wall are provided at the top and bottom of the outer wall of the guide sleeve, thereby fixing the guide sleeve inside the tank.

7. A compound premixing apparatus with online viscosity monitoring according to any one of claims 1 to 4, characterized in that: Flanges are provided on the periphery of the tank for the movable mounting of the viscosity sensor.

Images