Raw material mixing device for plasticizer production

Abstract

The utility model relates to a raw material mixing equipment for plasticizer production relates to the technical field of plasticizer production, it includes the stirred tank, the inside stirring kettle is provided with stirring mechanism and defoaming mechanism, stirring mechanism is connected with the main drive mechanism transmission of setting in the intermediate position of stirring kettle top, the raw material is mixed fast by stirring vane, defoaming mechanism is connected with the sub drive mechanism transmission of setting in the stirring kettle top, the defoaming paddle disc of setting in the main stirring shaft peripheral side is opposite rotation relative to stirring vane, breaks up and removes the bubble of mixed raw material liquid level, the vacuum mechanism is connected to the stirring kettle top wall, and the vacuum mechanism is drawn to the bubble in the mixed liquid inside and is broken down because of internal and external pressure difference, and defoaming mechanism and vacuum mechanism cooperate defoaming, and the comprehensive accurate elimination of bubble is realized in coordination.

Description

Technical Field

[0001] This utility model relates to the technical field of plasticizer production, and in particular to a raw material mixing device for plasticizer production. Background Technology

[0002] Plasticizers are polymer additives widely used in industrial products such as plastics processing, rubber synthesis, and adhesives. Adding plasticizers can increase the activity of polymer molecules, thereby increasing the plasticity of the product and making it easier to process and mold.

[0003] The traditional method of producing plasticizers is very simple: add the raw materials for producing plasticizers to a reaction vessel in a suitable ratio and stir thoroughly. However, in this process, high-speed stirring causes a large amount of gas to be mixed in and form bubbles. These bubbles are mixed in the plasticizer product. Because plasticizers have a certain viscosity, these bubbles are very stable and difficult to eliminate, ultimately affecting the product quality and uniformity. Utility Model Content

[0004] In order to improve the problems that occur in the mixing process of plasticizer raw materials in the above-mentioned background art, this utility model provides a raw material mixing equipment for plasticizer production.

[0005] The present invention provides a raw material mixing device for plasticizer production, which adopts the following technical solution:

[0006] A raw material mixing device for plasticizer production includes a mixing tank. The mixing tank is equipped with a stirring mechanism and a defoaming mechanism. The stirring mechanism is connected to a main drive mechanism located at the middle of the top of the mixing tank. The defoaming mechanism is connected to a secondary drive mechanism located at the top of the mixing tank. A vacuuming mechanism is connected to the top wall of the mixing tank.

[0007] Preferably, the stirring mechanism includes a main stirring shaft vertically installed in the middle of the stirring vessel, with stirring blades arranged around the lower section of the main stirring shaft; the defoaming mechanism includes a secondary stirring shaft, which is vertically installed inside the stirring vessel and arranged around the main stirring shaft, with a defoaming paddle disk arranged at the bottom end of the secondary stirring shaft.

[0008] Preferably, there is an installation gap between the outer edge of the defoaming paddle and the main stirring shaft, and the horizontal position of the defoaming paddle is higher than the upper edge of the stirring blade.

[0009] Preferably, the blades of the defoaming paddle disc are inclined.

[0010] Preferably, the vacuuming mechanism includes an air pipe that connects a buffer tank and a vacuum pump.

[0011] Preferably, a liquid level sensor and a pressure sensor are installed on the inner wall of the stirred tank, and the liquid level sensor and the pressure sensor are respectively connected to a controller located on the outside of the stirred tank.

[0012] Preferably, the side wall of the stirring vessel is provided with an observation window.

[0013] In summary, this utility model has the following beneficial technical effects:

[0014] In this invention, by setting up a stirring mechanism and a defoaming mechanism, the stirring blades drive the raw materials to mix quickly, and the defoaming paddle disk set on the side of the main stirring shaft rotates in the opposite direction to the stirring blades, breaking and removing bubbles on the surface of the mixed raw material liquid. At the same time, a vacuuming mechanism is connected to the outside of the mixing vessel. The vacuuming mechanism draws air and reduces pressure, causing the bubbles inside the mixture to break due to the pressure difference between the inside and outside. The defoaming mechanism and the vacuuming mechanism work together to defoam, achieving comprehensive and precise elimination of bubbles, improving the quality and uniformity of the product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of a raw material mixing device for plasticizer production according to an embodiment of this utility model;

[0016] Figure 2 This is a cross-sectional view of the internal structure of a raw material mixing device for plasticizer production according to an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the vacuum mechanism according to an embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional view of the internal structure of a raw material mixing device for plasticizer production according to an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Stirring vessel; 2. Stirring mechanism; 3. Defoaming mechanism; 4. Main drive mechanism; 5. Secondary drive mechanism; 6. Vacuuming mechanism; 7. Main stirring shaft; 8. Stirring blade; 9. Secondary stirring shaft; 10. Defoaming paddle disc; 11. Gas pipe; 12. Buffer tank; 13. Vacuum pump; 14. Liquid level sensor; 15. Gas pressure sensor; 16. Controller; 17. Observation window. Detailed Implementation

[0020] The following combination Figures 1-4 The present invention will be described in further detail below.

[0021] This utility model discloses a raw material mixing device for plasticizer production.

[0022] Reference Figure 1 , Figure 2 , Figure 3A raw material mixing device for plasticizer production includes a mixing tank 1. The mixing tank 1 is equipped with a stirring mechanism 2 and a defoaming mechanism 3. The stirring mechanism 2 is connected to a main drive mechanism 4 located at the top center of the mixing tank 1. The defoaming mechanism 3 is connected to a secondary drive mechanism 5 located at the top of the mixing tank 1. Both the main drive mechanism 4 and the secondary drive mechanism 5 use servo motors. A vacuuming mechanism 6 is connected to the top wall of the mixing tank 1.

[0023] Reference Figure 1 , Figure 2 The stirring mechanism 2 includes a main stirring shaft 7 vertically installed in the middle of the stirring vessel 1. The lower section of the main stirring shaft 7 is surrounded by stirring blades 8. The rotation of the stirring blades 8 causes the raw materials to flow and mix along the axial direction of the main stirring shaft 7, thereby improving the mixing effect.

[0024] Reference Figure 1 , Figure 2 , Figure 4 The defoaming mechanism 3 includes a secondary stirring shaft 9, which is vertically installed inside the mixing vessel 1 and located around the main stirring shaft 7. A defoaming paddle disk 10 is provided at the bottom of the secondary stirring shaft 9. The defoaming paddle disk 10 rotates faster and in the opposite direction to the stirring blade 8, thus exerting a shearing force on the bubbles, breaking them up and removing them.

[0025] Reference Figure 4 The defoaming impeller 10 uses a turbine-type stirring impeller structure with multiple blades. The blades of the defoaming impeller 10 are set at an angle. When the blades rotate, they form a strong radial flow. The bubbles in the mixture are carried to the high shear area near the blades and broken by the shear force and impact force of the blades.

[0026] Reference Figure 2 , Figure 4 There is an installation gap between the outer edge of the defoaming paddle 10 and the main stirring shaft 7. The horizontal position of the defoaming paddle 10 is higher than the upper edge of the stirring blade 8 to prevent the defoaming paddle 10 from colliding with the stirring blade 8.

[0027] Reference Figure 1 , Figure 2 The vacuum pumping mechanism 6 includes an air pipe 11, which connects to a buffer tank 12 and a vacuum pump 13. The vacuum pump 13 is used to extract the gas in the stirring vessel 1 to form a vacuum environment. The bubbles generated by stirring will burst due to the pressure difference between the inside and outside, thereby achieving the purpose of defoaming.

[0028] Reference Figure 1 , Figure 2A liquid level sensor 14 and a pressure sensor 15 are installed on the inner wall of the stirred tank 1. The liquid level sensor 14 and the pressure sensor 15 are respectively connected to a controller 16 located on the outside of the stirred tank 1. The receiving end of the liquid level sensor 14 receives the liquid level information and transmits it to the controller 16 in the form of an electrical signal. When the liquid level sensor 14 detects that the liquid level has reached a specified height, it starts defoaming. The controller controls the defoaming mechanism 3 to remove the foam. The pressure sensor 15 is used in conjunction with the vacuuming mechanism 6. The operation of the vacuuming mechanism 6 reduces the air pressure inside the stirred tank 1. The pressure sensor 15 detects the air pressure inside the stirred tank 1. After reaching a specified limit, it stops pumping air and maintains the pressure.

[0029] Reference Figure 1 An observation window 17 is provided on the side wall of the mixing vessel 1, through which the operator can observe the mixing and defoaming inside the mixing vessel 1.

[0030] The implementation principle of a raw material mixing device for plasticizer production according to an embodiment of the present invention is as follows: the vacuum mechanism 6 is activated to reduce the pressure of the mixing vessel 1, and the pressure sensor 15 detects the internal pressure of the mixing vessel 1; the raw material for plasticizer production is quantitatively input into the mixing vessel 1, the stirring mechanism 2 is activated to stir, and when the liquid level sensor 14 detects that the liquid level has reached the specified height, the defoaming mechanism 3 is activated to shear and break the bubbles.

[0031] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A raw material mixing device for plasticizer production, characterized in that: The vessel includes a stirring vessel (1), which is equipped with a stirring mechanism (2) and a defoaming mechanism (3). The stirring mechanism (2) is connected to a main drive mechanism (4) located at the top center of the stirring vessel (1). The defoaming mechanism (3) is connected to a secondary drive mechanism (5) located at the top of the stirring vessel (1). The top wall of the stirring vessel (1) is connected to a vacuuming mechanism (6).

2. The raw material mixing equipment for plasticizer production according to claim 1, characterized in that: The stirring mechanism (2) includes a main stirring shaft (7) vertically installed in the middle of the stirring vessel (1), and stirring blades (8) are arranged around the lower section of the main stirring shaft (7); the defoaming mechanism (3) includes a secondary stirring shaft (9), which is vertically installed inside the stirring vessel (1) and arranged around the main stirring shaft (7), and a defoaming paddle disc (10) is arranged at the bottom end of the secondary stirring shaft (9).

3. The raw material mixing equipment for plasticizer production according to claim 2, characterized in that: There is an installation gap between the outer edge of the defoaming paddle disc (10) and the main stirring shaft (7), and the horizontal position of the defoaming paddle disc (10) is higher than the upper edge of the stirring blade (8).

4. The raw material mixing equipment for plasticizer production according to claim 2, characterized in that: The blades of the defoaming paddle disc (10) are set at an angle.

5. The raw material mixing equipment for plasticizer production according to claim 1, characterized in that: The vacuum pumping mechanism (6) includes an air pipe (11) which is connected to a buffer tank (12) and a vacuum pump (13).

6. The raw material mixing equipment for plasticizer production according to claim 1, characterized in that: A liquid level sensor (14) and a pressure sensor (15) are installed on the inner wall of the stirred tank (1). The liquid level sensor (14) and the pressure sensor (15) are respectively connected to a controller (16) located on the outside of the stirred tank (1).

7. The raw material mixing equipment for plasticizer production according to claim 1, characterized in that: The side wall of the stirring vessel (1) is provided with an observation window (17).

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