An oil-in-water suspension preparation device

Abstract

The utility model provides a kind of oil-in-water suspension preparation device, it is related to oil-in-water suspension preparation field, including stirrer body and stirring motor, the upper of stirrer body is equipped with syringe pump, the output end of syringe pump is movably connected with liquid injection pipe, the output end of stirrer body is equipped with transmission pipe by transmission pump, the output end of transmission pipe is connected with homogenizer, the utility model in liquid injection process, liquid level is detected in real time by liquid level sensor on liquid injection pipe, and electric push rod can correspondingly adjust the height of liquid injection pipe, and the controllable precision injection of cooperation syringe pump and pinhole syringe, so as to control oil phase dispersion rate, avoid agglomeration, keep stirring in the process of injection, oil phase is dispersed into micron level droplet by shear force, after transmission pump starts, emulsion preliminarily dispersed in stirrer body is transferred to homogenizer by transmission pipe, cooperates the synergistic effect of high pressure homogenization of homogenizer, realizes precision control to oil drop particle size, further improves stability.

Description

Technical Field

[0001] This utility model relates to the field of oil-in-water suspension preparation, and in particular to an apparatus for preparing oil-in-water suspension. Background Technology

[0002] Oil-in-water suspensions refer to thermodynamically unstable systems in which the oil phase is uniformly dispersed in an aqueous phase at the nanoscale. They are widely used in dairy products, oral preparations, topical creams, and functional cosmetics. Traditional preparation methods (such as mechanical stirring emulsification and ultrasonic emulsification) have the following drawbacks:

[0003] 1. Uneven oil phase dispersion: Mechanical stirring can easily lead to oil phase agglomeration, forming large-sized oil droplets with insufficient stability;

[0004] 2. Difficulty in particle size control: Conventional methods are not able to accurately control the oil droplet size to the nanometer scale, which affects the rheological properties and bioavailability of the system;

[0005] To address the shortcomings of existing technologies, this invention provides a device for preparing nanoscale water-in-oil suspensions. Utility Model Content

[0006] The purpose of this invention is to solve the following problems in the existing technology: traditional preparation methods (such as mechanical stirring emulsification and ultrasonic emulsification) have problems such as uneven oil phase dispersion, mechanical stirring easily leads to oil phase agglomeration, forming large-sized oil droplets, insufficient stability, and difficulty in accurately controlling particle size.

[0007] To address the problems existing in the prior art, this utility model provides a water-in-oil suspension preparation device, including a mixer body and a stirring motor. An injection pump is provided above the mixer body, and an injection pipe is movably connected to the output end of the injection pump. A transfer pipe is provided at the output end of the mixer body through a transfer pump, and a homogenizer is connected to the output end of the transfer pipe.

[0008] Furthermore, an electric push rod is provided above the injection pump, and the telescopic end of the electric push rod is connected to the injection tube.

[0009] Furthermore, the injection tube is equipped with a telescopic liquid guide tube inside, and the output end of the injection tube is connected to a needle syringe.

[0010] Furthermore, a liquid level sensor is provided around the periphery of the injection tube rod, and the liquid level sensor is electrically connected to the control component of the electric push rod.

[0011] Furthermore, the output end of the stirring motor is connected to a stirring paddle.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, during the injection process, the liquid level is detected in real time by a liquid level sensor on the injection tube, and the height of the injection tube can be adjusted accordingly by an electric push rod. Combined with the controllable and precise injection of the injection pump and needle syringe, the oil phase dispersion rate can be controlled to avoid agglomeration. Stirring is maintained during the injection process, and the oil phase is initially dispersed into micron-sized droplets by shear force. Immediately after the transfer pump is started, the initially dispersed emulsion in the stirrer is transferred to the homogenizer through the transfer tube. With the synergistic effect of high-pressure homogenization in the homogenizer, the oil droplet size can be precisely controlled, and the stability can be further improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is the front view of the present invention;

[0016] Figure 3 This is a partial structural diagram of the injection tube of this utility model.

[0017] Reference numerals in the attached drawings: 1. Mixer body; 2. Mixing motor; 3. Injection pump; 4. Transfer pump; 5. Transfer pipe; 6. Homogenizer; 7. Electric push rod; 8. Injection pipe; 9. Liquid level sensor; 10. Needle syringe. Detailed Implementation

[0018] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation details without creative effort are all within the protection scope of this invention.

[0019] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0020] Example 1

[0021] like Figure 1-3 As shown, an oil-in-water suspension preparation device includes a mixer body 1 and a stirring motor 2. An injection pump 3 is provided above the mixer body 1. An injection pipe 8 is movably connected to the output end of the injection pump 3. A transfer pipe 5 is provided at the output end of the mixer body 1 through a transfer pump 4. A homogenizer 6 is connected to the output end of the transfer pipe 5.

[0022] In this embodiment, an electric push rod 7 is provided above the injection pump 3. The telescopic end of the electric push rod 7 is connected to the injection tube 8. The injection tube 8 is provided with a telescopic liquid guide tube inside. The output end of the injection tube 8 is connected to a needle syringe 10. A liquid level sensor 9 is also provided around the rod of the injection tube 8. The liquid level sensor 9 is electrically connected to the control component of the electric push rod 7. The output end of the stirring motor 2 is connected to a stirring paddle.

[0023] Working principle description: First, purified water is added to the stirred tank. After the stirring motor 2 is started, it drives the stirring paddle to start stirring. Immediately afterwards, the injection pump 3 is started, and the oil phase is injected into the stirring body 1 through the injection pipe 8. During the injection process, the liquid level is detected in real time by the liquid level sensor 9, and the height of the injection pipe 8 can be adjusted accordingly by the electric push rod 7. After inserting the needle syringe 10 of the injection pipe 8 into the bottom of the stirring body 1 1-5cm below the liquid surface, the flow rate is controlled by the injection pump 3, and the oil phase is slowly injected into the stirring body 1. This controls the dispersion rate of the oil phase and avoids agglomeration. Stirring is maintained during the injection process, and the oil phase is initially dispersed into micron-sized liquids by shear force. Following the start of the transfer pump 4, the initially dispersed emulsion in the mixer body 1 is transferred to the homogenizer 6 through the transfer pipe 5. During homogenization, the system temperature is controlled by a cooling system to prevent high temperatures from causing oil phase oxidation or surfactant denaturation. Finally, if further improvement in stability is required, suspending agents such as diatomaceous earth and silica can be added to the system. Compared with the prior art, this invention uses an injection pipe 8 with adjustable injection height in conjunction with slow dispersion via pinhole injection to control the oil phase dispersion rate and avoid agglomeration. Finally, with the synergistic effect of high-pressure homogenization by the homogenizer 6, precise control of oil droplet size is achieved, further improving stability.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An apparatus for preparing an oil-in-water suspension, comprising a stirrer body (1) and a stirring motor (2), characterized in that: An injection pump (3) is provided above the mixer body (1). The output end of the injection pump (3) is movably connected to an injection pipe (8). The output end of the mixer body (1) is provided with a transmission pipe (5) through a transmission pump (4). The output end of the transmission pipe (5) is connected to a homogenizer (6). An electric push rod (7) is provided above the injection pump (3), and the telescopic end of the electric push rod (7) is connected to the injection tube (8); The liquid level sensor (9) is also provided around the rod of the injection tube (8), and the liquid level sensor (9) is electrically connected to the control component of the electric push rod (7).

2. The apparatus for preparing an oil-in-water suspension according to claim 1, characterized in that: The injection tube (8) is equipped with a telescopic liquid guide tube inside, and the output end of the injection tube (8) is connected to a needle syringe (10).

3. The apparatus for preparing an oil-in-water suspension according to claim 1, characterized in that: The output end of the stirring motor (2) is connected to a stirring paddle.

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