A precision mixing device for food grade adhesive production

Abstract

The utility model discloses a kind of accurate mixing devices for food-grade adhesive production, including control unit and the premixing cylinder, main mixing cylinder and fine mixing cylinder connected in turn, premixing cylinder, main mixing cylinder, fine mixing cylinder are respectively equipped with stirring device;The top of premixing cylinder is equipped with the feed pipe for input raw material;The bottom of premixing cylinder is equipped with first discharge valve, the bottom of main mixing cylinder is equipped with second discharge valve, the bottom of fine mixing cylinder is equipped with third discharge valve, first discharge valve and the top of main mixing cylinder are connected with the first feed pipe of installing first feed pump, second discharge valve and the top of fine mixing cylinder are connected with the second feed pipe of installing second feed pump, third discharge valve is connected with discharge pipe.The utility model realizes efficient, accurate mixing process by multistage mixing control, to solve the problem of inaccuracy, inflexible control and poor uniformity in prior art.

Description

Technical Field

[0001] This utility model relates to the field of adhesive production equipment technology, and in particular to a precision mixing device for the production of food-grade adhesives. Background Technology

[0002] Food-grade adhesives require strict control of mixing parameters during production to ensure they are non-toxic, stable, and meet food safety standards. Existing mixing devices often employ a single mixing tank structure, resulting in poor mixing uniformity and low control precision, which can easily lead to unstable adhesive performance, excessive air bubbles, or component separation. Furthermore, existing devices lack real-time monitoring and adaptive adjustment capabilities, making it difficult to adapt to different formulations and process requirements.

[0003] Therefore, there is an urgent need for a novel and precise mixing device to improve the production quality and efficiency of food-grade adhesives. Utility Model Content

[0004] The purpose of this invention is to provide a precision mixing device for the production of food-grade adhesives, which achieves a high-efficiency and precise mixing process through multi-stage mixing control, thereby solving the problems of inaccurate mixing, inflexible control, and poor uniformity in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precision mixing device for the production of food-grade adhesives includes a control unit and a premixing cylinder, a main mixing cylinder, and a fine mixing cylinder connected in series. Each of the premixing cylinder, main mixing cylinder, and fine mixing cylinder is equipped with a stirring device. The top of the premixing cylinder has a feed pipe for inputting raw materials. The bottom of the premixing cylinder has a first discharge valve, the bottom of the main mixing cylinder has a second discharge valve, and the bottom of the fine mixing cylinder has a third discharge valve. A first feed pipe with a first feed pump is connected between the first discharge valve and the top of the main mixing cylinder. A second feed pipe with a second feed pump is connected between the second discharge valve and the top of the fine mixing cylinder. The third discharge valve is connected to a discharge pipe. The stirring device, the first discharge valve, the second discharge valve, the third discharge valve, the first feed pump, and the second feed pump are all connected to the control unit.

[0007] Furthermore, the premixing cylinder, the main mixing cylinder, and the fine mixing cylinder are all made of food-grade stainless steel, and the first conveying pipe, the second conveying pipe, and the feed pipe are all made of food-grade stainless steel.

[0008] Furthermore, there are several feed pipes, each used to input different raw materials, and each feed pipe is equipped with a feed valve and a metering pump, which are electrically connected to the control unit.

[0009] Furthermore, the stirring device located on the premixing tank includes a paddle stirrer and a first stirring motor for driving the paddle stirrer to rotate; the stirring device located on the main mixing tank includes a spiral stirrer and a second stirring motor for driving the spiral stirrer to rotate; and the stirring device located on the fine mixing tank includes a disc stirrer and a third stirring motor for driving the disc stirrer to rotate. The first stirring motor, the second stirring motor, and the third stirring motor are electrically connected to the control unit.

[0010] Furthermore, the bottom of the fine mixing cylinder is provided with a filter screen distributed near the inlet of the third discharge valve.

[0011] Furthermore, the premixing cylinder, the main mixing cylinder, and the fine mixing cylinder are each equipped with an air exchange valve, and the air exchange valve is electrically connected to the control unit.

[0012] Furthermore, the main mixing cylinder is equipped with an electric heating jacket and a temperature sensor, and the electric heating jacket and the temperature sensor are electrically connected to the control unit respectively.

[0013] Furthermore, the fine mixing cylinder is equipped with a suction device, which includes a suction pipe, a suction valve, a vacuum pump, and a pressure sensor. The pressure sensor and the suction valve are installed on the top of the fine mixing cylinder. The two ends of the suction pipe are respectively connected to the suction valve and the vacuum pump. The suction valve, the vacuum pump, and the pressure sensor are electrically connected to the control unit.

[0014] Furthermore, the fine mixing cylinder is equipped with an ultrasonic vibration device, which includes an ultrasonic generator and an ultrasonic transducer. The ultrasonic transducer is arranged on the side wall of the fine mixing cylinder, and the ultrasonic generator is connected to the control unit and the ultrasonic transducer respectively.

[0015] Furthermore, the control unit is a PLC controller.

[0016] Compared with the prior art, this utility model provides a precision mixing device for the production of food-grade adhesives, which has the following advantages:

[0017] This invention refines the mixing process through multi-stage mixing, improving the uniformity and stability of the adhesive; the control unit adjusts parameters based on real-time data, enhancing adaptability and accuracy; and by incorporating a vacuum pump and an ultrasonic vibration device, a vacuum negative pressure environment and ultrasonic function are provided, reducing bubble generation and promoting homogeneous mixing, thus improving product quality.

[0018] This utility model has a compact overall structure and is easy to operate, making it suitable for small-batch or continuous production. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a block diagram illustrating the control principle of this utility model.

[0022] Reference numerals: 1. Control unit; 2. Premixing cylinder; 21. Feed pipe; 22. First discharge valve; 23. Paddle agitator; 24. First stirring motor; 25. Feed valve; 26. Metering pump; 3. Main mixing cylinder; 31. Second discharge valve; 32. Spiral agitator; 33. Second stirring motor; 34. Electric heating jacket; 35. Temperature sensor; 4. Fine mixing cylinder; 41. Third discharge valve; 42. Discharge pipe; 43. Disc agitator; 44. Third stirring motor; 45. Filter screen; 5. First conveying pipe; 51. First conveying pump; 6. Second conveying pipe; 61. Second conveying pump; 7. Ventilation valve; 81. Suction pipe; 82. Suction valve; 83. Vacuum pump; 84. Pressure sensor; 9. Ultrasonic generator; 10. Ultrasonic transducer. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0024] Please refer to Figure 1 and Figure 2 This embodiment provides a precision mixing device for the production of food-grade adhesives, including a control unit 1 and a premixing cylinder 2, a main mixing cylinder 3 and a fine mixing cylinder 4 connected in series.

[0025] The top of the premixing cylinder 2 is provided with three feed pipes 21 for inputting different raw materials (such as base material, additives and solvents). Each feed pipe 21 is equipped with a feed valve 25 and a metering pump 26. The feed valve 25 and the metering pump 26 are electrically connected to the control unit 1, which can accurately control the input amount of raw materials, ensure the accuracy of raw material ratio, and reduce the mixing error.

[0026] The bottom of the premixing cylinder 2 is provided with a first discharge valve 22, the bottom of the main mixing cylinder 3 is provided with a second discharge valve 31, and the bottom of the fine mixing cylinder 4 is provided with a third discharge valve 41. The first discharge valve 22 is connected to the top of the main mixing cylinder 3 by a first feed pipe 5 on which a first feed pump 51 is installed. The second discharge valve 31 is connected to the top of the fine mixing cylinder 4 by a second feed pipe 6 on which a second feed pump 61 is installed. The third discharge valve 41 is connected to a discharge pipe 42. The first discharge valve 22, the second discharge valve 31, the third discharge valve 41, the first feed pump 51, and the second feed pump 61 are respectively connected to the control unit 1.

[0027] The premixing tank 2, main mixing tank 3, and fine mixing tank 4 are each equipped with a stirring device. Specifically, the stirring device on the premixing tank 2 includes a paddle stirrer 23 and a first stirring motor 24 for driving the paddle stirrer 23 to rotate; the stirring device on the main mixing tank 3 includes a spiral stirrer 32 and a second stirring motor 33 for driving the spiral stirrer 32 to rotate; the stirring device on the fine mixing tank 4 includes a disc stirrer 43 and a third stirring motor 44 for driving the disc stirrer 43 to rotate at high speed. The first stirring motor 24, the second stirring motor 33, and the third stirring motor 44 are electrically connected to the control unit 1.

[0028] During preparation, raw materials are fed into the premixing cylinder 2 via the corresponding feed pipe 21 according to the specified proportions. A paddle mixer 23 performs initial mixing (e.g., running at a low speed of 150 rpm for 5 minutes). The mixed material flows into the main mixing cylinder 3 via the first feed pipe 5 under the control of the first discharge valve 22 and the first feed pump 51. A spiral mixer 32 performs deep mixing and reaction (e.g., running at a speed of 250 rpm for 15 minutes). The deeply mixed material then enters the fine mixing cylinder 4 via the second feed pipe 6 under the control of the second discharge valve 31 and the second feed pump 61. A disc mixer 43 performs high-speed shearing and mixing to achieve fine homogenization (e.g., running at a high speed of 5000 rpm for 10 minutes), ensuring that the produced adhesive has a uniform particle size distribution (e.g., D90 < 50 μm). Finally, the third discharge valve 41 is opened to output the prepared food-grade adhesive. The control system monitors the entire process and adjusts the mixing speed and valve opening according to the preset program to ensure accurate mixing parameters.

[0029] By adopting the above-mentioned technical solution, multi-stage mixing is used to achieve gradual optimization from initial mixing to fine homogenization, thereby improving the uniformity and stability of the adhesive. Different types of agitators (paddle, spiral, and disc high-speed shear) are adapted to the mixing requirements of each stage, avoiding component separation. Control unit 1 adjusts parameters based on real-time data to realize automated operation of the control system, reducing human error, enhancing adaptability, and improving production efficiency and accuracy.

[0030] In this embodiment, as Figure 1 and Figure 2 As shown, the premixing cylinder 2, the main mixing cylinder 3, and the fine mixing cylinder 4 are each equipped with an air exchange valve 7, which is electrically connected to the control unit 1. By setting the air exchange valve 7, the corresponding air exchange valve 7 is opened during the material conveying process. By balancing the air pressure inside and outside the cylinder, the material can be conveyed quickly and smoothly.

[0031] In this embodiment, as Figure 1 and Figure 2 As shown, the main mixing cylinder 3 is equipped with an electric heating jacket 34 and a temperature sensor 35, which are electrically connected to the control unit 1. The electric heating jacket 34 is activated to provide a suitable temperature environment, and the operation of the electric heating jacket 34 is controlled by the feedback from the temperature sensor 35 to maintain a constant temperature range (e.g., 40℃±2℃).

[0032] To improve the quality of finished adhesive products, such as Figure 1 As shown, the bottom of the fine mixing cylinder 4 is equipped with a filter screen 45 distributed near the inlet of the third discharge valve 41, which can filter out any possible minute impurities and improve the purity of the product. For example, the mesh size of the filter screen 45 is 200 mesh.

[0033] In this embodiment, as an example, the premixing cylinder 2, main mixing cylinder 3, and fine mixing cylinder 4 are all made of food-grade stainless steel, and the first conveying pipe 5, second conveying pipe 6, and feed pipe 21 are all made of food-grade stainless steel. The first stirring motor 24, second stirring motor 33, and third stirring motor 44 are all variable frequency motors. The feed valve 25, first discharge valve 22, second discharge valve 31, third discharge valve 41, and air exchange valve 7 are electrically controlled valves. The control unit 1 can be a PLC controller, which is connected to the power supply. The PLC controller is equipped with a control operation panel and a display screen for setting operating parameters.

[0034] As an improved implementation method, such as Figure 1 and Figure 2As shown, the fine mixing cylinder 4 is equipped with a vacuum device, suitable for the production of food-grade adhesives sensitive to air bubbles. Specifically, the vacuum device includes a vacuum pipe 81, a vacuum valve 82, a vacuum pump 83, and a pressure sensor 84. The pressure sensor 84 and the vacuum valve 82 are installed at the top of the fine mixing cylinder 4. The two ends of the vacuum pipe 81 are connected to the vacuum valve 82 and the vacuum pump 83, respectively. The vacuum valve 82, the vacuum pump 83, and the pressure sensor 84 are electrically connected to the control unit 1. After the deeply mixed material enters the fine mixing cylinder 4 through the second feed pipe 6, the vacuum valve 82 is opened and the vacuum pump 83 is started to create a vacuum negative pressure environment. Then, the disc stirrer 43 is used for high-speed shearing and stirring to achieve fine homogenization, further optimizing the mixing accuracy, thereby preparing a high-performance adhesive with an air bubble content (volume ratio) that can be reduced to <0.5%. After mixing is completed, the vacuum pump 83 is turned off and the ventilation valve 7 is opened to restore normal pressure, facilitating the discharge of the material through the discharge pipe 42. By setting up an air extraction device to provide a vacuum negative pressure environment, the generation of air bubbles during the mixing process is reduced, which improves the density and appearance quality of the adhesive and enhances the overall product quality.

[0035] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the fine mixing tank 4 is further equipped with an ultrasonic vibration device, which enhances the mixing effect by generating high-frequency vibrations, suitable for food-grade adhesives requiring ultra-fine mixing. Specifically, the ultrasonic vibration device includes an ultrasonic generator 9 and an ultrasonic transducer 10. The ultrasonic transducer 10 is arranged on the side wall of the fine mixing tank 4, and the ultrasonic generator 9 is connected to the control unit 1 and the ultrasonic transducer 10 respectively. By setting up the ultrasonic vibration device, ultrasonic function is provided during the process of achieving fine homogenization through high-speed shear stirring. The ultrasonic-assisted mixing further refines the particles through the cavitation effect, promotes the degree of homogeneous mixing, improves the uniformity and bonding strength of the adhesive, and enhances product quality. As an example, the ultrasonic vibration device operates in pulse mode (working for 2 seconds, with a 1-second interval), with an ultrasonic power of 800W, a frequency of 25kHz, and a processing time of 5 minutes. In this way, while maintaining efficient mixing, the overall device can reduce the particle size of key components to below the micrometer level (D50 < 1μm) by utilizing the ultrasonic cavitation effect, significantly improving product transparency and bonding strength, and is suitable for high-end food packaging adhesives.

[0036] It should be noted that the feed valve 25, metering pump 26, first discharge valve 22, second discharge valve 31, third discharge valve 41, first stirring motor 24, second stirring motor 33, third stirring motor 44, electric heating jacket 34, temperature sensor 35, first feed pump 51, second feed pump 61, air exchange valve 7, air extraction valve 82, vacuum pump 83, pressure sensor 84, ultrasonic generator 9, ultrasonic transducer 10, and PLC controller used are all conventional components in chemical preparation. Appropriate specifications and models can be selected according to actual production needs.

[0037] The above embodiments are merely illustrative of the concept and technical solution of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precision mixing device for food grade adhesive production, characterized by, The system includes a control unit and a premixing tank, a main mixing tank, and a fine mixing tank connected in series. Each of the premixing tank, the main mixing tank, and the fine mixing tank is equipped with a stirring device. The top of the premixing tank is equipped with a feed pipe for inputting raw materials. The bottom of the premixing tank is equipped with a first discharge valve, the bottom of the main mixing tank is equipped with a second discharge valve, and the bottom of the fine mixing tank is equipped with a third discharge valve. A first feed pipe with a first feed pump is connected between the first discharge valve and the top of the main mixing tank, and a second feed pipe with a second feed pump is connected between the second discharge valve and the top of the fine mixing tank. The third discharge valve is connected to a discharge pipe. The stirring device, the first discharge valve, the second discharge valve, the third discharge valve, the first feed pump, and the second feed pump are all connected to the control unit.

2. The precision mixing device for food grade adhesive production as claimed in claim 1 wherein, The premixing cylinder, the main mixing cylinder, and the fine mixing cylinder are all made of food-grade stainless steel, and the first conveying pipe, the second conveying pipe, and the feed pipe are all made of food-grade stainless steel.

3. The precision mixing device for food grade adhesive production as claimed in claim 2 wherein, The feed pipes are provided in several locations, each feed pipe is used to input different raw materials, and each feed pipe is equipped with a feed valve and a metering pump. The feed valve and the metering pump are electrically connected to the control unit.

4. The precision mixing device for food grade adhesive production as claimed in claim 1 wherein, The stirring device located on the premixing tank includes a paddle stirrer and a first stirring motor for driving the paddle stirrer to rotate. The stirring device located on the main mixing tank includes a spiral stirrer and a second stirring motor for driving the spiral stirrer to rotate. The stirring device located on the fine mixing tank includes a disc stirrer and a third stirring motor for driving the disc stirrer to rotate. The first stirring motor, the second stirring motor, and the third stirring motor are electrically connected to the control unit.

5. The precision mixing device for food grade adhesive production as claimed in claim 1 wherein, The bottom of the fine mixing cylinder is equipped with a filter screen distributed near the inlet of the third discharge valve.

6. The precision mixing apparatus for the production of food-grade adhesives according to claim 1, characterized in that, The premixing cylinder, the main mixing cylinder, and the fine mixing cylinder are each equipped with an air exchange valve, and the air exchange valve is electrically connected to the control unit.

7. The precision mixing apparatus for the production of food-grade adhesives according to any one of claims 1 to 6, characterized in that, The main mixing cylinder is equipped with an electric heating jacket and a temperature sensor, which are electrically connected to the control unit.

8. The precision mixing device for food grade adhesive production as claimed in claim 7 wherein, The fine mixing cylinder is equipped with a suction device, which includes a suction pipe, a suction valve, a vacuum pump, and a pressure sensor. The pressure sensor and the suction valve are installed on the top of the fine mixing cylinder. The two ends of the suction pipe are respectively connected to the suction valve and the vacuum pump. The suction valve, the vacuum pump, and the pressure sensor are electrically connected to the control unit.

9. The precision mixing device for food grade adhesive production as claimed in claim 7 wherein, The fine mixing cylinder is equipped with an ultrasonic vibration device, which includes an ultrasonic generator and an ultrasonic transducer. The ultrasonic transducer is arranged on the side wall of the fine mixing cylinder, and the ultrasonic generator is connected to the control unit and the ultrasonic transducer respectively.

10. The precision mixing device for food grade adhesive production as claimed in claim 7 wherein, The control unit is a PLC controller.

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