Mixing device for improving uniformity of carbendazim suspension concentrate

Abstract

The present application relates to the technical fields of preparation of carbendazim suspension agent, and discloses a mixing device for improving uniformity of carbendazim suspension agent, wherein the ultrasonic generator, the vibrating mixer and the stirrer are arranged, the ultrasonic generator generates high-frequency sound waves to drive the mixer to vibrate at high frequency for dispersion mixing, meanwhile, the vibrating mixer can also resonate with the rotating stirrer to further improve the mixing efficiency, compared with the traditional stirring mixing mode, the ultrasonic mixer can more effectively disperse the particles into the liquid and produce uniform mixing effect, the high-power mechanical vibration can promote the mixing effect, meanwhile, the powerful mechanical vibration can more quickly and completely disperse the particles and realize uniform mixing, so that the production efficiency can be improved and the time can be saved.

Description

Technical Field

[0001] This invention relates to the technical field of carbendazim suspension preparation, specifically a mixing device for improving the uniformity of carbendazim suspension. Background Technology

[0002] Carbendazim suspension concentrate is a commonly used pesticide formulation in which carbendazim is dispersed in a liquid medium in a suspension form. When preparing carbendazim suspension concentrate, it is very important to ensure the uniform distribution of carbendazim in the suspension to ensure uniformity and effectiveness during application.

[0003] Currently, there are some mixing devices for improving the uniformity of carbendazim suspension, such as Chinese Patent 202211085062.8, a reaction vessel for processing carbendazim suspension and its processing method. The powdered carbendazim is mixed with water and other raw materials to prepare a suspension. However, the traditional stirring blade has low stirring efficiency, and because carbendazim is in powder form, it tends to float on the water surface when mixing raw materials, making it difficult to mix fully with water. During stirring, the carbendazim powder tends to scatter everywhere, affecting the mixing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a mixing device that improves the uniformity of carbendazim suspension, thereby solving the problem of low mixing efficiency of conventional mixing devices mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mixing device for improving the uniformity of carbendazim suspension, comprising a mixing and dispersing tank, the mixing and dispersing tank having two layers, namely a mixing inner tank and a water storage and temperature control tank, a water inlet being provided above the mixing inner tank, a suspension outlet being provided on one side of the bottom of the mixing inner tank, a folding lid being provided above the heat-insulating outer shell, a hopper being provided on one side of the mixing and dispersing tank, an air-blowing feeding mechanism being provided below the hopper, an ultrasonic generator being fixedly installed above the mixing and dispersing tank by a support frame, the support frame being connected to the mixing and dispersing tank by an elastic support block, a vibrating mixer being installed below the ultrasonic generator, an annular track being provided at the upper edge of the mixing inner tank, and a magnetic levitation stirring mechanism being provided above the annular track.

[0006] Furthermore, the mixing inner tank is used for storing and preparing carbendazim suspension, the water storage temperature control tank is filled with water, a heating rod is provided at the bottom of the water storage temperature control tank, and an insulation outer shell is provided on the outside of the water storage temperature control tank.

[0007] Furthermore, the inner wall of the mixing tank is coated with an organic polymer coating, such as a polytetrafluoroethylene coating, to isolate carbendazim from contact with the metal.

[0008] Furthermore, the air-blowing feeding mechanism includes a blowing pipe, which is connected to the bottom of the hopper. One end of the blowing pipe is connected to an air compressor via an air valve. An inclined baffle is provided inside the blowing pipe at the bottom of the hopper. The blowing pipe passes through the mixing and dispersing tank and is connected to the arc-shaped mixing tank inside the mixing inner tank.

[0009] Furthermore, the blowing pipe is horizontally arranged, the inclined baffle divides the blowing pipe into upper and lower halves, and the upper right end of the inclined baffle is closed, so that the carbendazim powder in the hopper can only enter the blowing pipe from the left side of the inclined baffle, and the compressed air in the air compressor is introduced from the right end of the blowing pipe.

[0010] Furthermore, the blowing pipe is connected to the arc-shaped mixing barrel from the top, the bottom of the arc-shaped mixing barrel is open, and the outer side of the bottom of the arc-shaped mixing barrel is machined with arc-shaped toothed grooves.

[0011] Furthermore, the magnetic levitation stirring mechanism includes a magnetic levitation ring, with a protruding annular guide strip machined below the magnetic levitation ring, and a recessed annular guide groove machined above the annular track. A first magnet is densely embedded in the annular guide groove, and a second magnet is densely embedded on both the inner and outer sides of the annular guide groove. A third magnet is densely embedded in the annular guide strip, and a fourth magnet is densely embedded on both the inner and outer sides of the annular guide strip. Three sets of support rods are fixedly connected to the inner side of the magnetic levitation ring, and a stirrer is fixedly connected to the end of each support rod.

[0012] Furthermore, the first magnet and the third magnet have the same poles facing each other, while the second magnet and the fourth magnet have different poles facing each other.

[0013] Furthermore, the magnetic levitation ring is machined with dense spiral fan blades above it, and the air compressor in the air blowing feeding mechanism is connected to one side of the magnetic levitation ring through an air blowing pipe. A high-pressure jet nozzle is provided at the end of the air blowing pipe, and the high-pressure jet nozzle is directly facing the spiral fan blades.

[0014] Furthermore, both the vibrating mixer and the agitator are fork-shaped, and the vibration frequencies of the vibrating mixer and the agitator are the same.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention, through the arrangement of an ultrasonic generator, a vibrating mixer, and a stirrer, generates high-frequency sound waves during mixing, which are converted into mechanical vibrations and transmitted to the mixer. Through the high-frequency vibration of the mixer, tiny bubbles or cavitation zones are formed in the liquid. These bubbles rapidly collapse during vibration, generating a strong impact force. This impact force causes the liquid particles to disperse and collide, promoting the mixing process. Simultaneously, the vibrating mixer can resonate with the rotating stirrer, further enhancing mixing efficiency. Compared to traditional stirring methods, the ultrasonic mixer can more effectively disperse particles into the liquid and produce a uniform mixing effect. The high-power mechanical vibration causes the small bubbles and cavitation zones to collapse rapidly, generating microscopic turbulence and eddies, promoting the mixing effect. Furthermore, its powerful mechanical vibration can disperse particles more quickly and thoroughly, achieving uniform mixing, which can improve production efficiency and save time. In addition, because ultrasonic mixing time is short and does not require high temperature or high shear force, it can reduce the thermal degradation or loss of active ingredients such as carbendazim, thus better preserving their activity.

[0017] 2. This invention, through the air-blowing feeding mechanism, can fully disperse the carbendazim powder in the hopper using compressed air and directly introduce it into the water, allowing it to mix thoroughly with the water. Compared with traditional feeding methods, this has many advantages:

[0018] Uniform mixing: By using compressed gas to blow carbendazim powder into the water, a more uniform mixing effect can be achieved. Due to the small bubbles and suspension shearing effect generated by the gas jet, the carbendazim powder will be better dispersed in the water and will come into more full contact with and mix with the molecules in the water.

[0019] Rapid dissolution: When carbendazim powder is sprayed underwater, the particles dissolve and diffuse more quickly. Compared to pouring it directly onto the water surface, gas spraying increases the contact area between the carbendazim powder and the water, thereby accelerating its dissolution rate.

[0020] Reduce waste and loss: Blowing carbendazim powder underwater minimizes powder waste and loss. The use of gas jets allows for precise control of the powder input and direct delivery into the target liquid, reducing the likelihood of powder being airborne and lost.

[0021] To avoid particle aggregation: Pouring carbendazim powder directly onto the water surface may cause the powder to clump or pile up, making it difficult to mix evenly. However, by spraying it underwater, particle aggregation can be avoided, ensuring uniform dispersion of the carbendazim.

[0022] Safety considerations: Blowing carbendazim powder underwater reduces dust generation, thereby minimizing potential hazards to humans and the environment. Furthermore, using compressed gas for spraying effectively avoids the potential risks associated with direct contact with the carbendazim powder. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the appearance and structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the appearance and structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic cross-sectional view of the present invention;

[0026] Figure 4 This is a schematic diagram of the magnetic levitation stirring mechanism of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the circular track and magnetic levitation ring structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the magnetic levitation ring drive structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the air-blowing feeding mechanism of the present invention;

[0030] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0031] Labels in the diagram: 1. Mixing and dispersing tank; 2. Inner mixing tank; 3. Water storage and temperature control tank; 4. Heating rod; 5. Insulation shell; 6. Water inlet; 7. Suspension agent outlet; 8. Folding lid; 9. Hopper; 10. Air-blowing feeding mechanism; 1001. Blowing pipe; 1002. Air valve; 1003. Air compressor; 1004. Inclined baffle; 1005. Arc-shaped mixing tank; 1006. Arc-shaped toothed groove; 11. Support frame ; 1101, Elastic support block; 12, Ultrasonic generator; 13, Vibrating mixer; 14, Circular track; 1401, First magnet; 1402, Second magnet; 15, Magnetic levitation stirring mechanism; 1501, Magnetic levitation ring; 1502, Third magnet; 1503, Fourth magnet; 1504, Support rod; 1505, Stirrer; 1506, Spiral fan blade; 16, Air blowing pipe; 17, High-pressure jet nozzle. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0034] Please see Figure 1 - Figure 3 A mixing device for improving the uniformity of carbendazim suspension includes a mixing and dispersion tank 1 with two layers: an inner mixing tank 2 and a water storage and temperature control tank 3. The inner mixing tank 2 is used to store and prepare the carbendazim suspension. Since carbendazim is an organophosphorus fungicide, it may react chemically with certain metals, leading to degradation, deterioration, or the production of toxic substances. Therefore, the inner wall of the inner mixing tank 2 is coated with an organic polymer coating, such as a polytetrafluoroethylene (PTFE) coating, which effectively isolates carbendazim from contact with metals, thereby preventing degradation and deterioration. Furthermore, the PTFE coating has excellent non-stick and surface lubrication properties, resulting in low adhesion of carbendazim to the PTFE-coated container surface, thus reducing... The mixing inner tank 2 is easy to clean. Water is filled into the water storage and temperature control tank 3. A heating rod 4 is installed at the bottom of the water storage and temperature control tank 3 to heat the water. The temperature is then controlled by the feedback of the sensor to keep the water temperature within a suitable range, thereby promoting the dispersion of carbendazim powder in the water. At the same time, reasonable temperature control can avoid excessive temperature, which would have an adverse effect on the chemical properties and agricultural applications of carbendazim. The water storage and temperature control tank 3 is equipped with an insulation shell 5 to prevent excessive heat loss. A water inlet 6 is set at the top of the mixing inner tank 2 for injecting solvent water. A suspension outlet 7 is set on one side of the bottom of the mixing inner tank 2 for discharging the prepared carbendazim suspension. A folding lid 8 is set on the top of the insulation shell 5, which can be opened to maintain the equipment.

[0035] Please see Figure 1 , Figure 2 , Figure 7 and Figure 8A hopper 9 is provided on one side of the mixing and dispersing tank 1. An air-blowing feeding mechanism 10 is provided below the hopper 9. The air-blowing feeding mechanism 10 includes a blowing pipe 1001. The blowing pipe 1001 is connected to the bottom of the hopper 9. One end of the blowing pipe 1001 is connected to an air compressor 1003 through an air valve 1002. An inclined baffle 1004 is provided inside the blowing pipe 1001 at the bottom of the hopper 9. The blowing pipe 1001 passes through the mixing and dispersing tank 1 and is connected to the arc-shaped mixing tank 1005 inside the inner mixing tank 2. The blowing pipe 1001 is horizontally positioned, and an inclined baffle 1004 divides it into upper and lower halves. The upper right end of the inclined baffle 1004 is closed, so the carbendazim powder in the hopper 9 can only enter the blowing pipe 1001 from the left side of the inclined baffle 1004. Compressed air from the air compressor 1003 enters from the right end of the blowing pipe 1001. This compressed air, entering from the right end of the blowing pipe 1001, creates a negative pressure area above the inclined baffle 1004 as it flows past it, thus blowing the carbendazim powder from the hopper 9 into the blowing pipe 1001. The material enters the arc-shaped mixing tank 1005 through the blowing pipe 1001, and then the water in the arc-shaped mixing tank 1005 is squeezed out. Due to the sudden increase in the space inside the arc-shaped mixing tank 1005, the carbendazim powder can be fully mixed with the air. Then, the air mixed with carbendazim powder overflows into the water from the arc-shaped toothed groove 1006 at the bottom of the arc-shaped mixing tank 1005. Due to the separation of the arc-shaped toothed groove 1006, the air bubbles are smaller and more uniform in size, which increases the contact area between the carbendazim powder and the water, thereby accelerating its dispersion speed and avoiding the accumulation of particles on the water surface and waste and loss.

[0036] Please see Figure 3 - Figure 6An ultrasonic generator 12 is fixedly mounted on top of the mixing and dispersing tank 1 via a support frame 11. The support frame 11 is connected to the mixing and dispersing tank 1 via an elastic support block 1101. A vibrating mixer 13 is installed below the ultrasonic generator 12. An annular track 14 is provided at the upper edge of the inner mixing tank 2. A magnetic levitation stirring mechanism 15 is provided above the annular track 14. The magnetic levitation stirring mechanism 15 includes a magnetic levitation ring 1501. A protruding annular guide strip is machined below the magnetic levitation ring 1501. A recessed annular guide groove is machined above the annular track 14. A first magnet 1401 is densely embedded in the annular guide groove. A second magnet 1402 is densely embedded on both the inner and outer sides of the annular guide groove. A third magnet 1502 is densely embedded in the annular guide strip. A fourth magnet 1503 is densely embedded on both the inner and outer sides of the annular guide strip. The first magnet 1401 and the third magnet 1502 are opposite each other with the same pole. The magnetic repulsion between the magnetic fields lifts the magnetic levitation ring 1501, making the magnetic levitation ring 1501... 01 has no direct contact with the annular track 14, thus greatly reducing the friction of the rotation of the magnetic levitation ring 1501. The second magnet 1402 and the fourth magnet 1503 have opposite magnetic poles and attract each other to limit the magnetic levitation ring 1501 and prevent it from deviating. Three sets of support rods 1504 are fixedly connected to the inner side of the magnetic levitation ring 1501. A stirrer 1505 is fixedly connected to the end of the support rods 1504. Dense spiral fan blades 1506 are machined on the top of the magnetic levitation ring 1501. The air compressor 1003 in the air blowing feeding mechanism 10 is connected to one side of the magnetic levitation ring 1501 through the air blowing pipe 16. A high-pressure jet nozzle 17 is provided at the end of the air blowing pipe 16. The high-pressure jet nozzle 17 is directly facing the spiral fan blades 1506. In this way, the compressed gas sprayed by the air compressor 1003 through the high-pressure jet nozzle 17 will push the spiral fan blades 1506, causing the magnetic levitation ring 1501 to rotate, thereby driving the stirrer 1505 to rotate and stir.

[0037] Please see Figure 3 and Figure 4 Both the vibrating mixer 13 and the agitator 1505 are forked, and their vibration frequencies are the same. Therefore, while the agitator 1505 is rotating, the ultrasonically driven vibrating mixer 13 can also resonate with the agitator 1505. This allows the vibrating mixer and the agitator to vibrate and stir at the same frequency, which greatly improves the mixing efficiency. The vibration under the combined effect of resonance can generate stronger shear force and turbulence, promoting the rapid mixing and diffusion of carbendazim powder and water, and accelerating the reaction speed. Compared with the traditional single stirring method, the efficient resonance mixing method can promote the mixing and reaction of reactants more quickly, thereby reducing the time of the entire reaction process.

[0038] Working principle: When preparing carbendazim suspension, firstly, an appropriate amount of water and solvent such as suspension are injected into the mixing tank 2 through the water inlet 6. Then, the water in the water storage temperature control tank 3 is heated by the heating rod 4, thereby controlling the temperature of the solvent through water bath heating. Then, carbendazim powder is added into the hopper 9 and the lid is closed. Then, the air compressor 1003 is started and the air valve 1002 is opened. The compressed air blows the carbendazim powder in the hopper 9 and then passes it into the water to mix thoroughly. At the same time, the compressed gas blows the spiral fan blade 1506 to drive the magnetic levitation ring 1501 to rotate, thereby driving the agitator 1505 to stir. While stirring, the ultrasonic generator 12 drives the vibrating mixer 13 to vibrate at high frequency through ultrasonic waves to disperse the carbendazim. At the same time, the vibrating mixer 13 will also resonate with the mechanical energy of the agitator 1505 to enhance the dispersion efficiency. After mixing is completed, the valve of the suspension discharge 7 can be opened to discharge the suspension.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for improving the uniformity of carbendazim suspension, comprising a mixing and dispersing tank (1), characterized in that: The mixing and dispersing tank (1) has two layers: a mixing inner tank (2) and a water storage and temperature control tank (3). A water inlet (6) is located above the mixing inner tank (2), and a suspending agent outlet (7) is located on one side of the bottom of the mixing inner tank (2). An insulation shell (5) is provided outside the water storage and temperature control tank (3), and a folding lid (8) is located above the insulation shell (5). A hopper (9) is located on one side of the mixing and dispersing tank (1), and an air-blowing feeding mechanism (10) is located below the hopper (9). The air-blowing feeding mechanism (10) includes a blowing pipe (1001), which penetrates the mixing and dispersing tank (1) and connects with the mixing inner tank (2). 2) The internal arc-shaped mixing tank (1005) is connected, and the blowing pipe (1001) is connected to the arc-shaped mixing tank (1005) from the top. The bottom of the arc-shaped mixing tank (1005) is open. The outer side of the bottom of the arc-shaped mixing tank (1005) is machined with an arc-shaped toothed groove (1006). An ultrasonic generator (12) is fixedly installed on the top of the mixing and dispersing tank (1) through a support frame (11). The support frame (11) is connected to the mixing and dispersing tank (1) through an elastic support block (1101). A vibrating mixer (13) is installed below the ultrasonic generator (12). A ring track (14) is set at the upper edge of the mixing inner tank (2). A magnetic levitation stirring mechanism (15) is provided above the annular track (14). The magnetic levitation stirring mechanism (15) includes a magnetic levitation ring (1501). A protruding annular guide bar is machined below the magnetic levitation ring (1501). A recessed annular guide groove is machined above the annular track (14). Three sets of support rods (1504) are fixedly connected to the inner side of the magnetic levitation ring (1501). A stirrer (1505) is fixedly connected to the end of the support rod (1504). Dense spiral fan blades (1506) are machined above the magnetic levitation ring (1501). The air compressor (1003) in the air blowing feeding mechanism (10) is connected to one side of the magnetic levitation ring (1501) through an air blowing pipe (16). A high-pressure jet nozzle (17) is provided at the end of the air blowing pipe (16). The high-pressure jet nozzle (17) is directly facing the spiral fan blades (1506). The ultrasonically driven vibrating mixer (13) can also resonate with the agitator (1505).

2. The mixing device for improving the uniformity of carbendazim suspension according to claim 1, characterized in that: The mixing inner tank (2) is used to store and prepare carbendazim suspension. Water is filled into the water storage and temperature control tank (3), and a heating rod (4) is provided at the bottom of the water storage and temperature control tank (3).

3. The mixing device for improving the uniformity of carbendazim suspension according to claim 1, characterized in that: The inner wall of the mixing tank (2) is coated with an organic polymer coating to isolate carbendazim from contact with metal.

4. The mixing device for improving the uniformity of carbendazim suspension according to claim 3, characterized in that: The organic polymer coating is made of polytetrafluoroethylene.

5. The mixing device for improving the uniformity of carbendazim suspension according to claim 1, characterized in that: The hopper (9) is connected to a blowing pipe (1001) at the bottom. One end of the blowing pipe (1001) is connected to an air compressor (1003) through an air valve (1002). An inclined baffle (1004) is provided inside the blowing pipe (1001) at the bottom of the hopper (9).

6. The mixing device for improving the uniformity of carbendazim suspension according to claim 5, characterized in that: The blowing pipe (1001) is set horizontally, and the inclined baffle (1004) divides the blowing pipe (1001) into upper and lower halves. The upper right end of the inclined baffle (1004) is closed, and the carbendazim powder in the hopper (9) can only enter the blowing pipe (1001) from the left side of the inclined baffle (1004). The compressed air in the air compressor (1003) is introduced from the right end of the blowing pipe (1001).

7. The mixing device for improving the uniformity of carbendazim suspension according to claim 1, characterized in that: The annular guide groove is densely inlaid with a first magnet (1401), the annular guide groove is densely inlaid with a second magnet (1402) on both the inner and outer sides, the annular guide bar is densely inlaid with a third magnet (1502), and the annular guide bar is densely inlaid with a fourth magnet (1503) on both the inner and outer sides.

8. The mixing device for improving the uniformity of carbendazim suspension according to claim 7, characterized in that: The first magnet (1401) and the third magnet (1502) have the same pole facing each other, while the second magnet (1402) and the fourth magnet (1503) have different magnetic poles facing each other.

9. A mixing device for improving the uniformity of carbendazim suspension according to claim 7, characterized in that: The vibrating mixer (13) and the agitator (1505) are both forked, and the vibration frequencies of the vibrating mixer (13) and the agitator (1505) are the same.

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