High-shear dispersing and emulsifying device

Abstract

The utility model discloses a high-shear dispersing and emulsifying device. The high-shear dispersing and emulsifying device comprises a shell, a stirring mechanism, a dispersing mechanism and a shearing and emulsifying mechanism, the stirring mechanism comprises a first driving device, a stirring shaft positioned in the shell and a stirring paddle positioned on the stirring shaft; the dispersing mechanism comprises a second driving device, a dispersing shaft positioned in the shell and a dispersing disc positioned on the dispersing shaft; the shearing and emulsifying mechanism comprises a third driving device, an emulsifying shaft positioned in the shell and an emulsifying head positioned on the emulsifying shaft. The high-speed shearing and emulsifying mechanism, the stirring mechanism and the dispersing mechanism are arranged and are used in a linkage manner, so that the dispersing uniformity and stability of the water-soluble fertilizer can be effectively improved, the layering and precipitation phenomena are reduced, and the nutrient utilization rate and the use effect of the water-soluble fertilizer are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid fertilizer production, and particularly relates to a high-shear dispersing and emulsifying device. Background Art

[0002] The main structure of the current high shear dispersing emulsifier is the stator and rotor system, and its structural form has also undergone updates, from blade structure to the current claw structure, from single-piece shearing to multi-layer dual bite shearing, from single-piece suction to bidirectional suction, to distribute one phase or multiple phases efficiently, quickly and evenly to another continuous phase; while under normal circumstances, the phases are immiscible with each other. Due to the high tangential speed generated by the high-speed rotation of the rotor and the strong kinetic energy brought by the high-frequency mechanical effect, the material is subjected to strong mechanical and hydraulic shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulence in the narrow gap between the stator and rotor. As a result, the immiscible solid phase, liquid phase and gas phase are instantly and finely dispersed and emulsified under the joint action of corresponding mature processes and appropriate additives. After high-frequency circulation, a relatively stable and high-quality product is finally obtained.

[0003] Almost all process flows (including food, dairy, chemical, petroleum, asphalt and other industries) are inseparable from the mixing, emulsification, crushing, dispersion and dissolution of multiphase raw materials. Liquid fertilizer contains a lot of nutrients and has a complex composition. In order to make it have good water solubility and uniformity, its production raw materials need to be fully dispersed and emulsified. Traditional stirring mixing or shear emulsification technology has the following obvious shortcomings when applied to liquid fertilizer production:

[0004] 1. Due to the limitations of domestic processing technology, the concentricity or coaxiality of high-speed shearing machines is difficult to ensure, and the rotor and stator are prone to jamming and cannot operate normally.

[0005] 2. The viscosity of liquid and liquid, or liquid and solid phases mixed together is usually high. To ensure the normal operation of the rotor and stator, the relative gap cannot be less than 50um, so the fineness of the material after shear emulsification cannot be guaranteed.

[0006] 3. Due to the limitations of the above two reasons, the relative rotation speed of the stator of the high shear emulsifier is slow, and its shear linear speed is relatively low, which will inevitably seriously affect the effects of shearing, crushing and emulsification.

[0007] 4. Due to the limitations of the rotor and stator structure of ordinary high shear emulsifiers, not only the fineness of the emulsion cannot be guaranteed, but the emulsion formed after shearing is easy to break, and a relatively stable emulsion molecular structure cannot be formed. The liquid fertilizer is easy to precipitate and segregate.

[0008] 5. Since the stratification and crystallization of liquid fertilizer are different at different shear speeds, too high or too low a speed will cause stratification and crystallization of liquid fertilizer. Utility Model Content

[0009] The purpose of the utility model is to provide a high shear dispersing emulsifying device to solve the deficiencies of the prior art.

[0010] The purpose of this utility model is achieved by the following technical solutions:

[0011] A high shear dispersing and emulsifying device comprises a shell, a stirring mechanism, a dispersing mechanism and a shear emulsifying mechanism;

[0012] The stirring mechanism includes a first driving device, a stirring shaft located in the housing, and a stirring paddle located on the stirring shaft; the first driving device is used to drive the stirring shaft and the stirring paddle to rotate at a high speed to stir and mix the materials in the housing;

[0013] The dispersion mechanism includes a second driving device, a dispersion shaft located in the housing, and a dispersion disk located on the dispersion shaft; the second driving device is used to drive the dispersion shaft and the dispersion disk to rotate at a high speed to evenly disperse the material in the housing;

[0014] The shearing emulsification mechanism includes a third driving device, an emulsifying shaft located in the shell, and an emulsifying head located on the emulsifying shaft; the third driving device is used to drive the emulsifying shaft and the emulsifying head to rotate at high speed to shear and emulsify the material in the shell.

[0015] Preferably, the stirring mechanism is located at the center of the shell, and the dispersing mechanism and the shearing emulsifying mechanism are located on the left and right sides of the stirring mechanism respectively.

[0016] Preferably, the stirring paddle is a scraping type stirring paddle.

[0017] Preferably, the dispersion tray comprises an upper dispersion tray and a lower dispersion tray.

[0018] Preferably, the dispersing teeth of the upper dispersing disc are arranged downward, and the dispersing teeth of the lower dispersing disc are arranged upward.

[0019] Preferably, the emulsifying head includes a stator and a rotor located inside the stator; the stator and the rotor are clearance-fitted.

[0020] Preferably, the rotor comprises a forward rotor and a reverse rotor with clearance fit, and the forward rotor and the reverse rotor rotate in opposite directions.

[0021] Preferably, the first driving device includes a stirring motor, a stirring motor output box and a stirring motor connecting frame located outside the shell.

[0022] Preferably, the second driving device includes a dispersed motor, a dispersed motor output box and a dispersed motor connecting frame located outside the housing.

[0023] Preferably, the third driving device includes an emulsification motor, an emulsification motor output box and an emulsification motor connecting frame located outside the shell.

[0024] The present application sets up a high-speed shear emulsification mechanism, a stirring mechanism and a dispersing mechanism, and the three mechanisms are used in conjunction to effectively improve the dispersion uniformity and stability of water-soluble fertilizers, reduce stratification and sedimentation phenomena, and thus improve the utilization rate and use effect of its nutrients. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the high shear dispersion emulsification device provided in this application;

[0026] Description of reference numerals:

[0027] 1-housing; 2-stirring motor; 3-emulsifying motor; 4-emulsifying motor output box; 5-emulsifying motor connecting frame; 6-dispersing motor; 7-dispersing motor output box; 8-dispersing motor connecting frame; 9-upper dispersing plate; 10-lower dispersing plate; 11-stirring shaft; 12-stirring paddle; 13-support frame; 14-emulsifying head; 15-dispersing shaft; 16-emulsifying shaft. DETAILED DESCRIPTION

[0028] The high shear dispersion emulsification device provided by this application is as follows Figure 1 As shown, it comprises a housing 1, a stirring mechanism, a dispersing mechanism and a shearing emulsifying mechanism. Preferably, the stirring mechanism is located at the center of the housing, and the dispersing mechanism and the shearing emulsifying mechanism are located on the left and right sides of the stirring mechanism respectively.

[0029] As those skilled in the art will appreciate, the shell 1 is further provided with a feed port and a discharge port. Generally, the feed port is located at the top of the shell for easy feeding, and the discharge port is located at the bottom or lower portion of the shell for easy discharging.

[0030] The stirring mechanism includes a first drive device, a stirring shaft 11 located within the housing, and a stirring paddle 12 located on the stirring shaft; the first drive device is used to drive the stirring shaft and stirring paddle to rotate at high speed to stir and mix the materials within the housing. Preferably, the first drive device includes a stirring motor 2 located outside the housing 1, a stirring motor output box, and a stirring motor connecting frame, and the stirring motor connecting frame is used to fix the entire stirring mechanism to the housing 1. The stirring motor output box is provided with an output shaft, and the two ends of the output shaft are respectively connected to the stirring motor output end and the stirring shaft 11. The stirring motor 2 drives the stirring shaft to rotate at high speed via the output shaft to fully stir the materials within the housing, so that the materials are evenly mixed.

[0031] Preferably, the stirring paddle 12 is a scraping type stirring paddle, which can prevent the material from adhering to the inner wall of the shell and make the material mixing more uniform.

[0032] The dispersion mechanism includes a second drive device, a dispersion shaft 15 located within the housing 1, and a dispersion disc located on the dispersion shaft. The second drive device is used to drive the dispersion shaft and dispersion disc to rotate at high speed, evenly dispersing the material within the housing. Preferably, the second drive device includes a dispersion motor 6 located outside the housing 1, a dispersion motor output box 7, and a dispersion motor connecting frame 8. The dispersion motor connecting frame 8 is used to secure the entire dispersion mechanism to the housing 1. The dispersion motor output box 7 is provided with an output shaft, the ends of which are respectively connected to the output end of the dispersion motor 6 and the dispersion shaft 15. The dispersion motor drives the dispersion shaft to rotate at high speed via the output shaft, fully dispersing the material within the housing.

[0033] In order to fully disperse the material, preferably, there are multiple dispersion discs, such as Figure 1 As shown, the dispersion plate includes an upper dispersion plate 9 and a lower dispersion plate 10. Furthermore, the dispersion teeth of the upper dispersion plate 9 are arranged downward, and the dispersion teeth of the lower dispersion plate 10 are arranged upward. Such an arrangement can better act on the material and fully disperse the material.

[0034] The shearing and emulsifying mechanism includes a third drive device, an emulsifying shaft 16 located within the housing 1, and an emulsifying head 14 located on the emulsifying shaft 16. The third drive device is used to drive the emulsifying shaft 16 and emulsifying head 14 to rotate at high speed, shearing and emulsifying the material within the housing. Preferably, the third drive device includes an emulsifying motor 3, an emulsifying motor output box 4, and an emulsifying motor connecting frame 5 located outside the housing. The emulsifying motor connecting frame 5 is used to secure the entire shearing and emulsifying mechanism to the housing 1. The emulsifying motor output box 4 is provided with an output shaft, the ends of which are respectively connected to the output end of the emulsifying motor 3 and the emulsifying shaft 16. The emulsifying motor drives the emulsifying shaft to rotate at high speed via the output shaft, shearing the material within the housing at high speed.

[0035] Preferably, the emulsifying head 14 includes a stator and a rotor located within the stator, with the stator and rotor being clearance-fitted. The stator is fixed to the dispersion mechanism via a support frame, and the rotor is connected to the emulsifying shaft. Driven by the emulsifying motor, the rotor rotates at high speed, causing high-speed shearing of the material between the stator and rotor.

[0036] Further preferably, the rotor comprises a forward rotor and a reverse rotor with a clearance fit, the forward rotor and the reverse rotor rotating in opposite directions, and the two rotors rotating simultaneously to shear the material, achieving a better shearing effect. In this case, the emulsifying motor has dual output shafts, connected to the forward rotor and the reverse rotor respectively, which can simultaneously drive the forward rotor and the reverse rotor to rotate in opposite directions.

[0037] When the present application is used, the liquid fertilizer material to be processed is added into the shell through the feed port, and then the stirring mechanism is first started to stir for a certain period of time, and then the dispersion mechanism and the shear emulsification mechanism are started in sequence to disperse and high-speed shear emulsify the material respectively, and the material is discharged from the discharge port after the processing is completed.

[0038] The liquid fertilizer shear emulsification device in the prior art generally only has a shear emulsification mechanism. Due to the limitations of the rotor and stator structure, the shear linear speed is relatively low, the fineness of the liquid fertilizer emulsion cannot be guaranteed, and the emulsion formed after shearing is easy to demulsify and cannot form a relatively stable emulsion molecular structure. It is easy to precipitate, separate, and stratify.

[0039] The present application simultaneously sets a stirring mechanism, a dispersing mechanism and a shearing emulsifying mechanism in the device, which have successively enhanced effects on the materials. First, the stirring mechanism is used to mix the materials entering the shell evenly, thereby improving the subsequent treatment effect. Then, the efficient stirring and dispersing effect of the dispersing mechanism is used to fully disperse the materials entering the shell, further improving the mixing uniformity and fineness of the materials, and fully hydrolyzing the nutrients in the liquid fertilizer to achieve a saturation effect, thereby obtaining a more stable suspended material. Finally, the high shearing effect of the shearing emulsifying mechanism is used to shear the materials entering the shell into smaller particle sizes, and at the same time, hydrolysis makes the suspension effect more stable, thereby obtaining a liquid fertilizer that is still stably suspended after long-term storage without problems such as stratification and demulsification.

[0040] By conducting shear dispersion experiments at different rotation speeds on liquid fertilizer, it was found that when the rotation speed of the shear emulsification mechanism and the dispersion mechanism reached 1450 rpm, the particle size of the sheared material reached the most ideal state and the fineness of the material was the best. Therefore, the rotation speed of the shear emulsification mechanism and the dispersion mechanism of this application is set to 1450 rpm. At the same time, the power of the stirring mechanism is set to 22KW. The particle size fineness of the treated liquid fertilizer can reach 100 mesh to 150 mesh, and no stratification and precipitation will occur after long-term storage. After long-term storage of liquid fertilizer treated with the prior art, stratification occurs in the liquid fertilizer. After being stored for the same storage time using the device of this application and the liquid fertilizer with a set rotation speed, the liquid fertilizer is still in a stable suspended state, which fully proves the treatment effect of this application on liquid fertilizer.

[0041] Therefore, the present invention provides a high-speed shear emulsification mechanism, a stirring mechanism, and a dispersion mechanism. The three mechanisms are used in conjunction to effectively improve the dispersion uniformity and stability of water-soluble fertilizers, reduce stratification and sedimentation, and thus improve the utilization rate and use effect of its nutrients. This is of great significance for improving agricultural production efficiency and promoting sustainable agricultural development.

[0042] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Clearly, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.

Claims

1. A high shear dispersing emulsification device, comprising a housing, characterized in that: It also includes a stirring mechanism, a dispersing mechanism and a shearing emulsifying mechanism; The stirring mechanism includes a first driving device, a stirring shaft located in the housing, and a stirring paddle located on the stirring shaft; the first driving device is used to drive the stirring shaft and the stirring paddle to rotate at a high speed to stir and mix the materials in the housing; The dispersion mechanism includes a second driving device, a dispersion shaft located in the housing, and a dispersion disk located on the dispersion shaft; the second driving device is used to drive the dispersion shaft and the dispersion disk to rotate at a high speed to evenly disperse the material in the housing; The shearing emulsification mechanism includes a third driving device, an emulsifying shaft located in the shell, and an emulsifying head located on the emulsifying shaft; the third driving device is used to drive the emulsifying shaft and the emulsifying head to rotate at high speed to shear and emulsify the material in the shell.

2. The high shear dispersing and emulsifying device according to claim 1, characterized in that: The stirring mechanism is located at the center of the shell, and the dispersing mechanism and the shearing emulsifying mechanism are respectively located on the left and right sides of the stirring mechanism.

3. The high shear dispersing and emulsifying device according to claim 1, wherein: The stirring paddle is a scraping type stirring paddle.

4. The high shear dispersing and emulsifying device according to claim 1, wherein: The dispersion plate includes an upper dispersion plate and a lower dispersion plate.

5. The high shear dispersing and emulsifying device according to claim 4, characterized in that: The dispersing teeth of the upper dispersing disc are arranged downward, and the dispersing teeth of the lower dispersing disc are arranged upward.

6. The high shear dispersing and emulsifying device according to claim 1, characterized in that: The emulsifying head includes a stator and a rotor located inside the stator; the stator and the rotor are clearance-fitted.

7. The high shear dispersing and emulsifying device according to claim 6, characterized in that: The rotor includes a forward rotor and a reverse rotor with clearance fit, and the forward rotor and the reverse rotor rotate in opposite directions.

8. The high shear dispersing and emulsifying device according to claim 1, wherein: The first driving device includes a stirring motor, a stirring motor output box and a stirring motor connecting frame located outside the shell.

9. The high shear dispersing and emulsifying device according to claim 1, wherein: The second driving device includes a dispersed motor, a dispersed motor output box and a dispersed motor connecting frame located outside the shell.

10. The high shear dispersing and emulsifying device according to claim 1, wherein: The third driving device includes an emulsification motor, an emulsification motor output box and an emulsification motor connecting frame located outside the shell.

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