An in-line high shear two-phase mixing device

Abstract

The application belongs to the field of mixing device manufacturing, and particularly relates to an online high-shear two-phase mixing device, which comprises a premixer, a feeding end of the premixer is communicated with a feeding end of a high-shear mixer, a discharging port of the high-shear mixer is communicated with a feeding end of a lifting pump, the high-shear mixer is provided with a two-phase material inlet, a two-phase material outlet and a supplementary liquid flow inlet, the supplementary liquid flow inlet and the discharging port of the high-shear mixer are located at the same axial position of the high-shear mixer, when a rotor of the mixer rotates, blades first pass through the supplementary liquid flow inlet and then turn to the discharging port; the application can provide a certain liquid flow for the high-shear mixer during a starting process and a closing process of the high-shear mixer, so that the high-shear mixer and the lifting pump cannot be idled, and the suction force (suction vacuum degree) of the lifting pump can compensate for the problem of insufficient delivery pressure of the high-shear mixer and the problem of energy waste in the prior art that discharged liquid is transferred in a container and then delivered.

Description

Technical Field

[0001] This application belongs to the field of mixing device manufacturing, specifically an online high-shear two-phase mixing device. Background Technology

[0002] Currently, a buffer tank is usually installed between the outlet of the high-shear mixer and the inlet of the booster pump. However, after the physicochemical properties of the miscible flow change in the buffer tank (such as a rapid increase in viscosity), the required conveying power increases. At the same time, due to the insufficient external output pressure of the high-shear mixer in the existing technology, the kinetic energy of the fluid is also lost when passing through the buffer tank, resulting in the entire device being energy-inefficient. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of existing technologies by designing an online high-shear two-phase mixing device that combines a booster pump and a supplementary liquid phase inlet with a high-shear mixer. This design ensures that a certain flow rate is provided to the high-shear mixer during startup and shutdown, preventing both the high-shear mixer and the booster pump from running dry. Furthermore, the suction force (vacuum) of the booster pump can compensate for the insufficient external pressure of the high-shear mixer, thereby enhancing its performance and solving the energy-inefficient problem of the existing technology where the effluent is transferred through a buffer container before being discharged.

[0004] To achieve the above objectives, the technical solution adopted in this application is:

[0005] An online high-shear two-phase mixing device includes a premixer, a high-shear mixer, and a lift pump. The discharge end of the premixer is connected to the feed end of the high-shear mixer, and the discharge end of the high-shear mixer is connected to the feed end of the lift pump. The high-shear mixer is connected to the outlet of the premixer and the replenishing liquid inlet. The replenishing liquid inlet and the discharge port of the high-shear mixer are located at the same axial position of the high-shear mixer.

[0006] Preferably, the high-shear mixer includes a motor, a housing, a rotor, and a stator. The stator is fixedly disposed inside the housing, and the rotor is rotatably disposed inside the housing. The motor is located outside the housing, and the output shaft of the motor passes through the housing and drives the rotor. The feed end of the booster pump is connected to the interior of the housing through the discharge port. The discharge end of the high-shear mixer is located on the housing, and the supplementary liquid inlet and the discharge port are located at the same axial position of the high-shear mixer. The discharge port of the premixer is connected to the housing. The feed of the mixer first passes through the stator, and then undergoes intense mixing in the rotating area of ​​the stator and rotor meshing before entering the output of the booster pump through the discharge port at one end of the rotor.

[0007] Preferably, the replenishing liquid inlet is located on the housing, and the radial angle between the replenishing liquid inlet and the discharge port is in the range of 90° to 270°.

[0008] Preferably, the radial angle between the supplementary liquid inlet and the discharge port is within the range of 180° to 270°.

[0009] Preferably, the stator is provided with a housing that cooperates with the rotor, and the rotor is coaxially rotatable inside the housing. The housing has a slit-shaped rotating area where the stator and rotor mesh. When the liquid and the dispersed phase pass through the slits with relative shearing motion, the two phases are mixed uniformly by shearing force.

[0010] Preferably, the inlet of the booster pump is directly connected to the discharge port of the high-shear mixer, and forms a flow shortcut with the supplementary liquid inlet at the rotor end inside the high-shear mixer.

[0011] Compared with the prior art, this application has the following beneficial effects:

[0012] This allows for a certain liquid flow rate to be provided to the high-shear mixer during startup and shutdown, ensuring that neither the high-shear mixer nor the booster pump runs dry. Furthermore, the suction force (vacuum) of the booster pump can compensate for the insufficient external output pressure of the high-shear mixer, thereby enhancing the performance of the high-shear mixer and solving the energy-inefficient problem of the existing technology where the liquid is transferred through a container before being exported. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this application;

[0014] Figure 2 for Figure 1 A schematic diagram of section AA in the diagram.

[0015] Among them, 1. Premixer; 2. Booster pump; E4. Supplementary liquid inlet; E5. Discharge port; 6. Motor; 7. Housing; 8. Rotor; 9. Stator; 10. Machine casing. Detailed Implementation

[0016] like Figure 1-2 As shown, an online high-shear two-phase mixing device includes a premixer 1, a high-shear mixer, and a booster pump 2. The discharge end of the premixer 1 is connected to the feed end of the high-shear mixer, and the discharge port of the high-shear mixer is connected to the feed port of the booster pump 2. The high-shear mixer is also provided with an inlet of the premixer 1 and a supplementary liquid inlet E4. The supplementary liquid inlet E4 and the discharge port E5 of the high-shear mixer are located at the same axial position of the high-shear mixer, and the radial angle between the supplementary liquid inlet E4 and the discharge port E5 of the high-shear mixer is 270°.

[0017] In this embodiment, the premixer 1 first performs a preliminary mixing of the solid and liquid. The pre-mixed solid-liquid mixture then flows into the high-shear mixer, where it completely and uniformly disperses the solid and liquid. Finally, the lift pump 2 extracts the thoroughly stirred, homogeneous solid-liquid mixture from the high-shear mixer. The suction force (vacuum) of the lift pump 2 in this embodiment compensates for insufficient external pressure and inlet suction force of the high-shear mixer, enhancing its performance. Meanwhile, the supplementary liquid inlet E4 enters the high-shear mixer without obstruction. During the start-up and shutdown of the high-shear mixer, the lift pump 2 provides a certain flow rate of liquid phase into the mixer, preventing abnormal operation. When the flow rate and pressure of the homogeneous two-phase flow after mixing in the high-shear mixer cannot match the subsequent lifting requirements, the lift pump 2 can supplement this lifting capacity, maintaining the entire device under rated operating conditions.

[0018] In a preferred embodiment, the high-shear mixer includes a housing 7, a motor 6, a rotor 8, and a stator 9. The stator 9 is fixedly disposed inside the housing 7, and the rotor 8 is rotatably disposed inside the housing 7. The motor 6 is located outside the housing 7, and the output shaft of the motor 6 passes through the housing 7 and is connected to the rotor 8 for transmission. The housing 7 has a slit-shaped rotating area where the stator 9 (all stators 9 have slits, which is in the prior art) and the rotor 8 mesh. When the liquid and the dispersed phase pass through the slits with relative shear motion, the two phases are mixed uniformly by shear force.

[0019] With this setup, the solution after being mixed in the premixer 1 enters the housing 7 of the high-shear mixer through the inlet of the premixer 1. The rotor 8 driven by the motor 6 rotates to achieve high-shear mixing, while the fixed stator 9 ensures that the solution being stirred is sheared and mixed by the relative movement of the stator 9 and the rotor 8.

[0020] The discharge end of the high shear mixer is located on the housing 7 and at one end of the integral formed by the rotor 8 and the stator 9. The feed end of the high shear mixer is located on the housing 7 and at the other end of the integral formed by the rotor 8 and the stator 9. This arrangement ensures that after the two-phase materials enter the housing 7, they must pass through the area where the rotor 8 and the stator 9 rotate relative to each other (i.e., be sheared and mixed) before flowing out of the housing 7 from the discharge end of the high shear mixer.

[0021] As a preferred embodiment, the inlet of the booster pump 2 is directly connected to the discharge port E5 of the high-shear mixer, forming a flow shortcut with the supplementary liquid inlet E4 at the rotor 8 end within the high-shear mixer. This arrangement allows the supplementary liquid inlet E4 to directly deliver liquid to the end of the rotor 5 of the high-shear mixer facing away from the stator 3, without passing through the mixing zone of the rotor 5 and stator 3.

Claims

1. An online high-shear two-phase mixing device, characterized in that, The equipment includes a premixer (1), a high-shear mixer, and a booster pump (2). The discharge end of the premixer (1) is connected to the feed end of the high-shear mixer, and the discharge end of the high-shear mixer is connected to the feed end of the booster pump (2). The high-shear mixer is connected to the outlet of the premixer (1) and the supplementary liquid inlet (E4). The supplementary liquid inlet (E4) and the discharge port (E5) of the high-shear mixer are located at the same axial position of the high-shear mixer.

2. The online high-shear two-phase mixing device according to claim 1, characterized in that, The high-shear mixer includes a motor (6), a housing (7), a rotor (8), and a stator (9). The stator (9) is fixedly installed inside the housing (7), and the rotor (8) is rotatably installed inside the housing (7). The motor (6) is outside the housing (7), and the output shaft of the motor (6) passes through the housing (7) and drives the rotor (8). The feed end of the lift pump (2) is connected to the interior of the housing (7) through the discharge port (E5). The discharge end of the high-shear mixer is located on the housing (7), and the supplementary liquid inlet (E4) and the discharge port (E5) are located at the same axial position of the high-shear mixer. The discharge port (E3) of the premixer is connected to the housing (7). The feed of the mixer first passes through the stator (9), and then is strongly mixed in the rotating area where the stator (9) and the rotor (8) mesh, and then enters the output of the lift pump (2) through the discharge port at one end of the rotor (8).

3. The online high-shear two-phase mixing device according to claim 2, characterized in that, The replenishment inlet (E4) is located on the housing (7), and the radial angle (A) between the replenishment inlet (E4) and the discharge port (E5) is in the range of 90° to 270°.

4. The online high-shear two-phase mixing device according to claim 3, characterized in that, The radial angle (A) between the supplementary liquid inlet (E4) and the discharge port (E5) is in the range of 180° to 270°.

5. The online high-shear two-phase mixing device according to claim 2, characterized in that, The stator (9) is provided with a housing (10) that cooperates with the rotor (8). The rotor (8) is coaxially rotatable inside the housing (10). The housing (10) has a slit-shaped rotating area where the stator (9) and rotor (8) mesh. When the liquid and the dispersed phase pass through the slits of the relative shearing motion, the two phases are mixed evenly by the shearing force.

6. The apparatus for online high-shear two-phase mixing according to claim 2, characterized in that, The inlet of the booster pump (2) is directly connected to the discharge port (E5) of the high shear mixer, and forms a flow shortcut with the supplementary liquid inlet (E4) at the rotor end inside the high shear mixer.

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