Emulsifying and homogenizing unit for nano preparation

Abstract

The utility model relates to the technical field of emulsifying preparation manufacturing equipment, and mainly discloses an emulsifying and homogenizing unit for nano preparations, which comprises an emulsifying tank and a homogenizer, a conveying pump conveys materials in the emulsifying tank into the homogenizer through a pipeline, the emulsifying tank comprises a tank body, a slow shaft and a fast shaft, and the slow shaft and the fast shaft are mounted in the tank body. The low-speed shaft and the high-speed shaft meet the rotating speed of high-speed shearing, the rotating speed of the low-speed shaft is smaller than that of the high-speed shaft, an upper shearing head and a lower shearing head are installed on the low-speed shaft and the high-speed shaft respectively, and the rotating directions of vortexes generated by the upper shearing head and the lower shearing head are the same or opposite. The circulating pipe penetrating through the two vortexes is arranged at the vortexes generated by the upper shearing head and the lower shearing head, rapid and strong material circulation can be formed in the tank, materials are directly pumped into a homogenizer after passing through the emulsifying tank, and the materials are more uniformly mixed, so that the whole product system is more uniform and stable.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsifying preparation manufacturing equipment, in particular to an emulsifying and homogenizing unit for nano preparations. Background Art

[0002] Nano-emulsification technology is a rapidly developing technology with broad application prospects. It can improve the stability and bioavailability of the prepared substances and reduce the production cost. With the continuous development of technology, nano-emulsification technology will be more applied in the fields of food, medicine and industry, bringing more convenience and benefits to people's lives.

[0003] In the food industry, nano-emulsification technology can be used to prepare food additives such as emulsifiers and stabilizers. Nano-emulsification can improve the stability and taste of food preparation and increase the nutritional value and bioavailability of food.

[0004] The working principle of the emulsifying tank is to form a strong vortex by the cutting and shearing action of high-speed rotation, disperse the material evenly on a layer, and then pressurize it to pass through the delicate pores of ultra-high-speed flow, forcing it to undergo multiple actions such as shearing, splitting, collision, and friction, so that the material reaches a very delicate emulsification effect. The emulsifying machine can make the material as fine as possible, making the dispersion more uniform and delicate. The emulsifying tank is generally only applicable to conventional emulsions and is not applicable to nano-emulsifying preparations. Most of the emulsifying equipment on the market only has a single shearing head (upper shearing or lower shearing), with low emulsifying efficiency and poor uniformity. To obtain a more stable and uniform nano-emulsifying preparation requires a longer emulsifying time, and the energy consumption generated during this period is also large. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problems existing in the prior art, and provides an emulsifying and homogenizing unit for nano preparations, which improves the existing emulsifying tank equipment. A rapid and strong material circulation can be formed in the tank, and then the emulsifying tank is connected in series with the homogenizer. The material is directly pumped into the homogenizer after passing through the emulsifying tank. The material liquid is further refined under the triple actions of extrusion, strong impact and pressure loss expansion, and the materials are mixed more evenly with each other, so that the whole product system is more uniform and stable.

[0006] To achieve the above object, the utility model adopts the following technical solutions: An emulsifying and homogenizing unit for nano preparations, comprising an emulsifying tank and a homogenizer. The emulsifying liquid outlet at the lower end of the emulsifying tank is connected to the homogenizer feed pipe at the upper end of the homogenizer through a pipeline. A delivery pump is arranged on the pipeline, and the delivery pump transports the materials in the emulsifying tank to the homogenizer through the pipeline. The homogenizer further refines the materials and discharges the finished products through the homogenizer discharge pipe. The emulsifying tank includes a tank body, a slow shaft and a fast shaft installed in the tank body. Both the slow shaft and the fast shaft are connected to a power motor, and both the slow shaft and the fast shaft meet the rotational speed of high-speed shearing. The slow shaft and the fast shaft are located on the same axis and the rotational speed of the slow shaft is less than that of the fast shaft. An upper shearing head is installed on the slow shaft, and a lower shearing head is installed on the fast shaft. The upper shearing head is placed above the lower shearing head and the rotational directions of the eddies generated by the upper shearing head and the lower shearing head are the same or opposite. A circulation pipe penetrating the two eddies is arranged at the eddies generated by the upper shearing head and the lower shearing head, and the flow direction of the circulation pipe is from the eddy generated by the lower shearing head to the eddy generated by the upper shearing head. A cooling jacket is further arranged outside the tank body, and a cooling coil is arranged in the cooling jacket.

[0007] Through the above technical solutions, the upper shearing head and the lower shearing head act together, greatly improving the shearing efficiency and making the particle size distribution of the liquid materials more uniform and delicate under the same shearing time. The slow shaft and the fast shaft drive the upper shearing head and the lower shearing head to rotate respectively, generating two eddies in opposite directions. The upper shearing head pumps downward, driving the liquid materials with smaller density to flow downward, and the lower shearing head pumps upward, driving the liquid materials with larger density to flow upward, enabling the materials with larger density differences to move relatively under the action of opposite forces, promoting the mixing and emulsification between the materials with larger density differences, and improving the homogeneity and stability of the dispersion system. A reflux is generated through the circulation pipe at the two eddies, and the liquid materials in the eddy generated by the lower shearing head flow to the eddy generated by the upper shearing head, further enhancing the mixing effect between the upper and lower liquid materials. The cooling coil arranged outside the tank body is connected to the cooling system, and the cooling water circulates in the cooling coil to prevent excessive temperature rise caused by high shearing, resulting in oil oxidation and material denaturation, etc. The liquid materials generated by the above emulsifying tank are transported to the homogenizer through the delivery pump for further production of stable and uniform nano-emulsifying preparations.

[0008] A further solution of the present utility model is that the upper shearing head includes an upper stirring blade installed on the slow shaft and an upper fixing ring covering the outside of the upper stirring blade. A plurality of inclined blades are evenly distributed on the circumference of the upper stirring blade, and a plurality of through holes are evenly distributed on the side wall of the upper fixing ring in the circumferential direction; the lower shearing head includes a lower stirring blade installed on the fast shaft and a lower fixing ring covering the outside of the lower stirring blade. A plurality of inclined blades are evenly distributed on the circumference of the lower stirring blade, and a plurality of through holes are evenly distributed on the side wall of the lower fixing ring in the circumferential direction. The liquid material is sheared at a high speed in the annular gap between the upper stirring blade and the upper fixing ring or the lower stirring blade and the lower fixing ring to form an emulsion.

[0009] A further solution of the present utility model is that the upper shearing head and the lower shearing head are installed on a bracket arranged inside the tank body. The bracket includes an upper bracket, a lower bracket and a connecting rod connecting the upper bracket and the lower bracket. The upper fixing ring and the lower fixing ring are fixedly arranged on the connecting rod.

[0010] A further solution of the present utility model is that the slow shaft is connected to the upper fixing ring through a bearing, and the fast shaft is connected to the lower fixing ring through a bearing.

[0011] A further solution of the present utility model is that the slow shaft and the fast shaft are respectively driven to rotate by a power motor and a planetary gear assembly. The planetary gear assembly includes a planetary gear housing, an annular gear ring, a sun gear, planetary gears and a planetary carrier. The upper end of the fast shaft is connected to the shaft of the power motor through a coupling. The sun gear is arranged at the upper end of the fast shaft and is fixedly connected to the fast shaft. The annular gear ring is fixed on the outside of the two planetary gear housings. A plurality of planetary gears are evenly arranged between the sun gear and the annular gear ring and are meshed with both the sun gear and the annular gear ring. The plurality of planetary gears are connected to the planetary carrier, and the upper end of the slow shaft is fixedly connected to the planetary carrier. Through the above technical solution, the slow shaft and the fast shaft can rotate coaxially and in the same direction but at different speeds by one power motor. The rotation directions of the slow shaft and the fast shaft are the same, and the inclination directions of the blades of the upper stirring blade on the slow shaft and the lower stirring blade on the fast shaft are symmetric along the midline between the upper stirring blade and the lower stirring blade.

[0012] A further solution of the present utility model is that the slow shaft is arranged above the inside of the tank body, and the lower end of the fast shaft penetrates through the slow shaft and extends to the lower part inside the tank body.

[0013] A further solution of the present utility model is that the planetary gear housing of the planetary gear assembly is installed on the outside of the top of the tank body through a bracket.

[0014] A further solution of the present utility model is that both ends of the circulation pipe are funnel-shaped, and the funnel-shaped water inlet and outlet facilitate the entry and discharge of the liquid material.

[0015] A further solution of the present utility model is that a plurality of the circulation pipes are evenly distributed along the circumferential direction of the cross-section of the tank body. Preferably, four circulation pipes are provided. The plurality of circulation pipes are more conducive to the circulation of the liquid material between the upper and lower eddies.

[0016] Another alternative solution for realizing that the upper shearing head and the lower shearing head generate two eddies with opposite rotation directions is that the slow shaft and the fast shaft are respectively driven to rotate by two power motors. The power motor of the slow shaft is arranged at the top of the tank body, and the power motor of the fast shaft is arranged at the bottom of the tank body. The rotation directions of the slow shaft and the fast shaft are opposite, and the inclination directions of the blades of the upper stirring blades on the slow shaft and the lower stirring blades on the fast shaft are the same. Using two power motors to respectively control the rotation of the slow shaft and the fast shaft is beneficial to controlling the rotation speeds of the slow shaft and the fast shaft and accurately controlling the rotation speeds.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present utility model provides an emulsifying and homogenizing unit for nano preparations.

[0019] 1. The upper shearing head and the lower shearing head act together, greatly improving the shearing efficiency and making the particle size distribution of the liquid material more uniform and delicate under the same shearing time. The slow shaft and the fast shaft respectively drive the upper shearing head and the lower shearing head to rotate, generating two eddies in opposite directions. The upper shearing head pumps downward, driving the liquid material with a smaller density to flow downward, and the lower shearing head pumps upward, driving the liquid material with a larger density to flow upward, making the materials with a large density difference move relatively under the action of opposite forces, promoting the mixing and emulsification between the materials with a large density difference, and improving the homogeneity and stability of the dispersion system.

[0020] 2. By generating a reflux through the circulation pipes at the two eddies, the liquid material in the eddy generated by the lower shearing head flows to the eddy generated by the upper shearing head, further enhancing the mixing effect between the upper and lower liquid materials.

[0021] 3. The cooling coil pipes arranged outside the tank body are connected to the cooling system, and the cooling water circulates in the cooling coil pipes to prevent excessive temperature rise caused by high shear, resulting in problems such as oil oxidation and material denaturation.

[0022] 4. The liquid material generated by the above emulsifying tank is transported to the homogenizer through a transfer pump. The material liquid is further refined under the triple action of extrusion, strong impact and pressure loss expansion, and the materials are more evenly mixed with each other, further generating a stable and uniform nano-scale emulsifying preparation. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the connection relationship between the planetary gear assembly of the present invention and the upper shearing head and the lower shearing head;

[0026] Figure 3 Schematic diagram of the installation of the slow shaft and the upper stirring blade, and the fast shaft and the lower stirring blade in Embodiment 1 of the present invention;

[0027] Figure 4 Schematic diagram of the installation of the slow shaft and the upper stirring blade, and the fast shaft and the lower stirring blade in Embodiment 2 of the present invention.

[0028] In the figure: 100, emulsifying tank; 200, homogenizer; 300, pipeline; 400, transfer pump; 1, tank body; 2, slow shaft; 3, fast shaft; 4, upper shearing head; 5, lower shearing head; 6, power motor; 7, planetary gear assembly; 8, cooling coil; 9, circulation pipe; 10, emulsified liquid outlet; 11, cooling interlayer; 12, planetary gear housing; 13, annular gear ring; 14, sun gear; 15, planetary gear; 16, planetary carrier; 17, upper fixing ring; 18, upper stirring blade; 19, lower fixing ring; 20, lower stirring blade; 21, upper bracket; 22, connecting rod; 23, lower bracket; 201, homogenizer feed pipe; 202, homogenizer discharge pipe. Detailed implementation manners

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] Embodiment 1

[0031] As Figures 1-3As shown in the figure, an emulsifying and homogenizing unit for a nano - preparation includes an emulsifying tank 100 and a homogenizer 200. The emulsifying liquid outlet 10 at the lower end of the emulsifying tank 100 is connected to the homogenizer feed pipe 201 at the upper end of the homogenizer 200 through a pipeline 300. A transfer pump 400 is arranged on the pipeline 300. The transfer pump 400 transports the materials in the emulsifying tank 100 into the homogenizer 200 through the pipeline 300. The homogenizer 200 further refines the materials and discharges the finished products through the homogenizer discharge pipe 202. The liquid materials generated by the above - mentioned emulsifying tank 100 are transported to the homogenizer 200 through the transfer pump 400. The liquid materials are further refined under the triple actions of extrusion, strong impact, and pressure - loss expansion, and the materials are more evenly mixed with each other, further producing a stable and uniform nano - level emulsifying preparation.

[0032] The homogenizer 200 is a high - pressure homogenizer 200 in the prior art, and its model is the SRH1000 - 40 homogenizer 200 produced by Shanghai Shenlu Homogenizer Co., Ltd.

[0033] The structure of a high - pressure homogenizer generally includes components such as a high - pressure pump and a homogenizing valve. The high - pressure pump generates high - pressure fluid through the reciprocating motion of a plunger, and transports the materials to the homogenizing chamber through the transfer pump 400 and the homogenizer feed pipe 201. The homogenizing chamber is the part where the materials are homogenized. Through the actions of high - pressure fluid on the materials such as shearing, cavitation, and impact, the materials are dispersed into a uniform state. The processed liquid materials are discharged as finished products through the homogenizer discharge pipe 202. Other components of the homogenizer 200 are known to those skilled in the art, and will not be described in this patent.

[0034] The emulsifying tank 100 includes a tank body 1, a slow - speed shaft 2 and a fast - speed shaft 3 installed in the tank body 1. Both the slow - speed shaft 2 and the fast - speed shaft 3 are connected to a power motor 6.

[0035] Specifically, as Figure 2 shown in the figure, the slow - speed shaft 2 and the fast - speed shaft 3 are respectively driven to rotate by a power motor 6 and a planetary gear assembly 7. The planetary gear assembly 7 includes a planetary gear housing 12, an annular gear ring 13, a sun gear 14, planetary gears 15 and a planetary carrier 16. The planetary gear housing 12 of the planetary gear assembly 7 is installed on the outer side of the top of the tank body 1 through a bracket.

[0036] The upper end of the fast - speed shaft 3 is connected to the shaft of the power motor 6 through a coupling. The sun gear 14 is arranged at the upper end of the fast - speed shaft 3 and is fixedly connected to the fast - speed shaft 3. The annular gear ring 13 is fixed on the outer sides of the two planetary gear housings 12.

[0037] A plurality of planetary gears 15 are circumferentially arranged between the sun gear 14 and the ring gear 13 and are engaged with both the sun gear 14 and the ring gear 13. The plurality of planetary gears 15 are connected to the planet carrier 16, and the upper end of the slow-speed shaft 2 is fixedly connected to the planet carrier 16.

[0038] Both the slow-speed shaft 2 and the fast-speed shaft 3 meet the rotational speed for high-speed shearing. The slow-speed shaft 2 and the fast-speed shaft 3 are on the same axis and the rotational speed of the slow-speed shaft 2 is less than that of the fast-speed shaft 3. An upper shearing head 4 is installed on the slow-speed shaft 2, and a lower shearing head 5 is installed on the fast-speed shaft 3. The upper shearing head 4 is placed above the lower shearing head 5, and the rotational directions of the eddies generated by the upper shearing head 4 and the lower shearing head 5 are the same or opposite. The upper shearing head 4 and the lower shearing head 5 act together, greatly improving the shearing efficiency and making the particle size distribution of the liquid material more uniform and delicate under the same shearing time. The slow-speed shaft 2 and the fast-speed shaft 3 drive the upper shearing head 4 and the lower shearing head 5 to rotate respectively, generating two eddies in opposite directions. The upper shearing head 4 pumps downward, driving the liquid material with a smaller density to flow downward, and the lower shearing head 5 pumps upward, driving the liquid material with a larger density to flow upward, making the materials with a large density difference move relatively under the action of forces in opposite directions, promoting the mixing and emulsification between the materials with a large density difference, and improving the homogeneity and stability of the dispersion system.

[0039] Specifically, the upper shearing head 4 includes an upper stirring blade 18 installed on the slow-speed shaft 2 and an upper fixing ring 17 covering the outside of the upper stirring blade 18. A plurality of inclined blades are circumferentially and evenly arranged on the upper stirring blade 18, and a plurality of through holes are circumferentially and evenly arranged on the side wall of the upper fixing ring 17; the lower shearing head 5 includes a lower stirring blade 20 installed on the fast-speed shaft 3 and a lower fixing ring 19 covering the outside of the lower stirring blade 20. A plurality of inclined blades are circumferentially and evenly arranged on the lower stirring blade 20, and a plurality of through holes are circumferentially and evenly arranged on the side wall of the lower fixing ring 19. The liquid material is subjected to high-speed shearing in the annular gap between the upper stirring blade 18 and the upper fixing ring 17 or the lower stirring blade 20 and the lower fixing ring 19 to form an emulsion. When the emulsifying tank 100 starts to work, the high-speed rotating upper stirring blade 18 and lower stirring blade 20 generate a huge rotating suction force in the tank body 1. This suction force sucks the material directly above the upper stirring blade 18 and the lower stirring blade 20 downward in a rotating manner and throws it upward at high speed to the upper fixing ring 17 and the lower fixing ring 19. In this process, the material is preliminarily dispersed. The material thrown to the upper fixing ring 17 or the lower fixing ring 19 is broken into smaller particles after being subjected to the high-speed shearing, collision, and crushing actions of the upper stirring blade 18 and the lower stirring blade 20. These particles are gradually and evenly dispersed in water in the tank body 1 under the action of mutual collision and adsorption to form a stable emulsion.

[0040] Through the above technical solution, a single driving motor 6 can achieve the coaxial and same-direction but different-speed rotation of the slow shaft 2 and the fast shaft 3. As Figure 3 shown, the slow shaft 2 and the fast shaft 3 rotate in the same direction. The inclination directions of the blades of the upper stirring blades 18 on the slow shaft 2 and the lower stirring blades 20 on the fast shaft 3 are symmetric along the midline between the upper stirring blades 18 and the lower stirring blades 20. Specifically, the blades of the upper stirring blades 18 are inclined from top to bottom and from right to left, and the blades of the lower stirring blades 20 are inclined from top to bottom and from left to right. The rotation directions of the slow shaft 2 and the fast shaft 3 are counterclockwise. At this time, the eddy current directions generated by the upper shearing head 4 and the lower shearing head 5 are the same, but the upper eddy current tends to move obliquely downward, and the lower eddy current tends to move obliquely upward.

[0041] The upper shearing head 4 and the lower shearing head 5 are installed on a bracket arranged inside the tank body 1. The bracket includes an upper bracket 21, a lower bracket 23 and a connecting rod 22 connected between the upper bracket 21 and the lower bracket 23. Both the upper bracket 21 and the lower bracket 23 are discs, and a plurality of through holes are evenly distributed in a circumferential manner on the discs. The two ends of the plurality of connecting rods 22 are respectively connected to the through holes of the upper bracket 21 and the lower bracket 23 through bolts, and the upper fixing ring 17 and the lower fixing ring 19 are fixedly arranged on the connecting rod 22.

[0042] The slow shaft 2 is connected to the upper fixing ring 17 through a bearing, and the fast shaft 3 is connected to the lower fixing ring 19 through a bearing.

[0043] The slow shaft 2 is arranged above the inside of the tank body 1, and the lower end of the fast shaft 3 penetrates through the slow shaft 2 and extends to the lower part inside the tank body 1.

[0044] A return flow is generated through the circulation pipes 9 at the two eddy current locations. The liquid material in the eddy current generated by the lower shearing head 5 flows to the eddy current location generated by the upper shearing head 4, further improving the mixing effect between the upper and lower liquid materials. A circulation pipe 9 that penetrates the two eddy currents is arranged at the eddy current locations generated by the upper shearing head 4 and the lower shearing head 5. The flow direction of the circulation pipe 9 is from the eddy current location generated by the lower shearing head 5 to the eddy current location generated by the upper shearing head 4. Both ends of the circulation pipe 9 are funnel-shaped, and the funnel-shaped inlet and outlet are convenient for the entry and discharge of liquid materials.

[0045] A plurality of the circulation pipes 9 are evenly distributed in a circumferential manner along the cross-section of the tank body 1. Preferably, four circulation pipes 9 are provided. The plurality of circulation pipes 9 are more conducive to the circulation of liquid materials between the upper and lower eddy currents.

[0046] A cooling jacket 11 is further arranged outside the tank body 1, and a cooling coil 8 is arranged inside the cooling jacket 11. The cooling coil 8 arranged outside the tank body 1 is connected to the water inlet and the water return of the cooling system. Cooling water circulates in the cooling coil 8 to prevent excessive temperature rise caused by high shear, resulting in oil oxidation and material denaturation, etc.

[0047] Example 2

[0048] This example is based on Example 1. The difference from Example 1 is that

[0049] the slow shaft 2 and the fast shaft 3 are respectively driven to rotate by two power motors 6. The power motor 6 of the slow shaft 2 is arranged at the top of the tank body 1, and the power motor 6 of the fast shaft 3 is arranged at the bottom of the tank body 1. As Figure 4 shown, the rotation directions of the slow shaft 2 and the fast shaft 3 are opposite, and the inclination directions of the blades of the upper stirring blades 18 on the slow shaft 2 and the lower stirring blades 20 on the fast shaft 3 are the same. Using two power motors 6 to control the rotation of the slow shaft 2 and the fast shaft 3 respectively is beneficial to controlling the rotation speeds of the slow shaft 2 and the fast shaft 3 and accurately controlling the rotation speeds.

[0050] The blades of the upper stirring blades 18 are inclined from top to bottom from left to right, and the blades of the lower stirring blades 20 are inclined from top to bottom from left to right. The slow shaft 2 rotates clockwise, and the fast shaft 3 rotates counterclockwise. At this time, the eddy current directions generated by the upper shearing head 4 and the lower shearing head 5 are opposite, and at the same time, the upper eddy current tends to move obliquely downward, and the lower eddy current tends to move obliquely upward.

[0051] This example realizes that the upper shearing head 4 and the lower shearing head 5 generate two eddy currents with opposite rotation directions.

[0052] Working principle: Before using the high-speed emulsifying tank, it must be cleaned thoroughly, including the inside and outside. During use, if any sundries or foreign objects are found, they should be cleaned up in time.

[0053] Startup: Before starting, it is necessary to check whether there is enough raw material in the feed tank and ensure good air circulation in the room. First, turn on the pump and add additives as needed. Then start the high-speed emulsifying tank, and continue to add raw materials after the rotation speed of the high-speed emulsifying tank reaches the standard.

[0054] Control the temperature of the storage tank: During the emulsification process, attention should be paid to controlling the temperature of the storage tank. Generally, it is required that the temperature of the storage tank is below 60 °C. When the temperature is too high under the high-speed emulsification state, turn on the cooling system to lower the temperature in the tank body through the cooling coil.

[0055] Emulsification process: After adding the raw materials, the upper stirring blades and the lower stirring blades are immediately accelerated to the high-speed state, and the raw materials start to surge, generating mixing and strong agitation. Then, through impact emulsification, after continuous impact, friction, shearing and other effects, finally, a fine granular emulsion is formed. During the emulsification process, it is necessary to adjust the rotation speed and time of the stirring blades according to different products to achieve an excellent emulsification effect.

[0056] Homogenization process: The emulsion after stirring in the emulsifying tank is transported to the homogenizer by a transfer pump, and the finished product of the nano-level preparation is produced by the homogenizer.

[0057] End operation: After the end operation, the emulsifying tank and the homogenizer should be cleaned and equipment maintenance should be carried out. Generally, the tank body needs to be cleaned from the stirring blades, the sealing part, and the bottom.

[0058] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An emulsifying and homogenizing unit for a nano preparation, characterized in that: It includes an emulsifying tank (100) and a homogenizer (200). The emulsifying liquid outlet (10) at the lower end of the emulsifying tank (100) is connected to the feed pipe (201) of the homogenizer at the upper end of the homogenizer (200) through a pipeline (300). A delivery pump (400) is provided on the pipeline (300). The delivery pump (400) transports the material in the emulsifying tank (100) to the homogenizer (200) through the pipeline (300). The homogenizer (200) further refines the material and discharges the finished product through the discharge pipe (202) of the homogenizer. The emulsifying tank (100) includes a tank body (1), a slow shaft (2) and a fast shaft (3) installed in the tank body (1). The slow shaft (2) and the fast shaft (3) are both connected to a power motor (6). The slow shaft (2) and the fast shaft (3) both meet the rotational speed of high-speed shearing. The slow shaft (2) and the fast shaft (3) are on the same axis and the rotational speed of the slow shaft (2) is less than that of the fast shaft (3). An upper shearing head (4) is installed on the slow shaft (2), and a lower shearing head (5) is installed on the fast shaft (3). The upper shearing head (4) is placed above the lower shearing head (5), and the rotational directions of the eddies generated by the upper shearing head (4) and the lower shearing head (5) are the same or opposite. A circulation pipe (9) penetrating the two eddies is provided at the eddies generated by the upper shearing head (4) and the lower shearing head (5). The flow direction of the circulation pipe (9) is from the eddy generated by the lower shearing head (5) to the eddy generated by the upper shearing head (4). A cooling jacket (11) is further provided outside the tank body (1), and a cooling coil (8) is provided in the cooling jacket (11).

2. The emulsification and homogenization unit of a nano - preparation according to claim 1, characterized in that: The upper shearing head (4) includes an upper stirring blade (18) installed on the slow shaft (2) and an upper fixing ring (17) covering the outside of the upper stirring blade (18). A plurality of inclined blades are circumferentially and uniformly distributed on the upper stirring blade (18). A plurality of through holes are circumferentially and uniformly distributed on the side wall of the upper fixing ring (17). The lower shearing head (5) includes a lower stirring blade (20) installed on the fast shaft (3) and a lower fixing ring (19) covering the outside of the lower stirring blade (20). A plurality of inclined blades are circumferentially and uniformly distributed on the lower stirring blade (20). A plurality of through holes are circumferentially and uniformly distributed on the side wall of the lower fixing ring (19).

3. The emulsifying and homogenizing unit of a nano - preparation according to claim 2, characterized in that: The upper shearing head (4) and the lower shearing head (5) are installed on a bracket provided inside the tank body (1). The bracket includes an upper bracket (21), a lower bracket (23) and a connecting rod (22) connecting the upper bracket (21) and the lower bracket (23). The upper fixing ring (17) and the lower fixing ring (19) are fixedly arranged on the connecting rod (22).

4. An emulsifying and homogenizing unit for a nano - preparation according to claim 3, characterized in that: The slow shaft (2) is connected to the upper fixing ring (17) through a bearing, and the fast shaft (3) is connected to the lower fixing ring (19) through a bearing.

5. An emulsifying and homogenizing unit for a nano - preparation according to claim 4, characterized in that: The slow shaft (2) and the fast shaft (3) are respectively driven to rotate by a power motor (6) and a planetary gear assembly (7). The planetary gear assembly (7) includes a planetary gear housing (12), an annular gear ring (13), a sun gear (14), planetary gears (15) and a planet carrier (16). The upper end of the fast shaft (3) is connected to the shaft of the power motor (6) through a coupling. The sun gear (14) is arranged at the upper end of the fast shaft (3) and is fixedly connected to the fast shaft (3). The annular gear ring (13) is fixed to the outside of the two planetary gear housings (12). A plurality of planetary gears (15) are circumferentially arranged between the sun gear (14) and the annular gear ring (13) and are meshed with both the sun gear (14) and the annular gear ring (13). The plurality of planetary gears (15) are connected to the planet carrier (16). The upper end of the slow shaft (2) is fixedly connected to the planet carrier (16).

6. The emulsifying and homogenizing unit of a nano - preparation according to claim 5, characterized in that: The slow shaft (2) is arranged above the inside of the tank body (1). The lower end of the fast shaft (3) penetrates through the slow shaft (2) and extends to the lower part of the inside of the tank body (1).

7. An emulsifying and homogenizing unit for a nano - preparation according to claim 5, characterized in that: The planetary gear housing (12) of the planetary gear assembly (7) is installed on the outside of the top of the tank body (1) through a bracket.

8. An emulsifying and homogenizing unit for a nano preparation according to claim 1, characterized in that: Both ends of the circulation pipe (9) are funnel-shaped.

9. An emulsifying and homogenizing unit for a nano - preparation according to claim 8, characterized in that: A plurality of the circulation pipes (9) are evenly distributed along the circumferential direction of the cross-section of the tank body (1).

10. An emulsifying and homogenizing unit for a nano - preparation according to claim 2, characterized in that: The slow shaft (2) and the fast shaft (3) are respectively driven to rotate by two power motors (6). The power motor (6) of the slow shaft (2) is arranged at the top of the tank body (1), and the power motor (6) of the fast shaft (3) is arranged at the bottom of the tank body (1). The rotation directions of the slow shaft (2) and the fast shaft (3) are opposite. The inclination directions of the blades of the upper stirring blades (18) on the slow shaft (2) and the lower stirring blades (20) on the fast shaft (3) are the same.

Images