CN108940145B - Mixed pesticide microcapsule mixes preparation facilities - Google Patents

Abstract

The invention discloses a mixed pesticide microcapsule mixing preparation device which comprises a single-shaft needle, a coaxial needle, a shell material liquid supply device and a pesticide liquid supply device, wherein the coaxial needle comprises an inner needle and an outer needle sleeved on the outer side of the inner needle, the pesticide liquid supply device is used for conveying liquid medicine to the single-shaft needle and the inner needle, and the shell material liquid supply device is used for conveying a capsule material to the outer needle. In the mixed pesticide microcapsule mixing preparation device that this application provided, through setting up the pesticide that unipolar syringe needle processing did not contain the shell cyst wall material, the pesticide that contains the cyst wall material through coaxial syringe needle processing for in the pesticide use, the pesticide that does not contain the cyst wall material releases the use preferentially, and the pesticide that contains the cyst wall material is slowly released along with the after-decomposition of cyst wall material and pesticide diffusion pesticide, makes the pesticide can be used fully, and the rate of utilization of pesticide improves.

Description

Mixed pesticide microcapsule mixing and preparation device

Technical field

The invention relates to the technical field of pesticide preparation, and in particular to a device for mixing and preparing mixed pesticide microcapsules.

Background technique

In agricultural production, in order to increase yields, pesticides are usually used to control crop diseases and insect pests, and pesticides are sprayed for weeding at the same time, so that crops have a greater survival advantage and reduce labor workload.

When pesticides are applied, pesticides directly form a solution or suspension with water and are sprayed directly into the field. Although it will be more immediate, it will cause a large amount of pesticide waste and cause a considerable degree of environmental pollution. Strong dependence, the rainy season can easily lead to ineffective application of pesticides, and the use rate of pesticides is low.

Therefore, how to improve the utilization rate of pesticides is an urgent technical problem that needs to be solved by those skilled in the art.

Contents of the invention

The object of the present invention is to provide a device for mixing and preparing mixed pesticide microcapsules to improve the utilization rate of pesticides.

In order to achieve the above object, the present invention provides a mixed pesticide microcapsule mixing and preparation device, which includes a uniaxial needle, a coaxial needle, a shell liquid supply device and a pesticide liquid supply device. The coaxial needle includes an inner needle and a sheath mounted on There is an outer needle outside the inner needle, the pesticide liquid supply device is used to transport medicinal liquid to the single-axis needle and the inner needle, and the shell material liquid supply device is used to transport capsule material to the outer needle.

Preferably, it also includes a high-voltage power supply, a conductive plate connected to the positive end of the high-voltage power supply, and an electrode plate connected to the negative pole of the high-voltage power supply. Both the uniaxial needle and the coaxial needle are installed on the conductive plate. The conductive plate and the electrode plate are arranged facing each other, and the output ends of the uniaxial needle and the coaxial needle are located between the conductive plate and the electrode plate.

Preferably, the conductive plate is composed of a plurality of detachably connected array modules, and at least one of the uniaxial needles and at least one of the coaxial needles are installed on the array modules.

Preferably, the number ratio of the single-axis needles and the coaxial needles on at least one of the array modules is 1:2.

Preferably, the number ratio of the single-axis needles and the coaxial needles on at least one of the array modules is 2:1.

Preferably, it also includes a gas storage tank and a shell gas pressure reducing valve. The gas storage tank is connected to the shell liquid supply device through a shell air inlet pipe. The internal cavity of the shell liquid supply device is closed. In the cavity, the shell gas pressure reducing valve is located on the shell air inlet pipe.

Preferably, the shell material liquid supply device is provided with a first air pressure gauge and a first pressure reducing valve, and the shell material liquid supply device transports shell material to the outer needle through a shell material delivery pipe, and the shell material delivery device The pipe is provided with a first flow control valve.

Preferably, it also includes a pesticide liquid gas pressure reducing valve, the gas storage tank is connected to the pesticide liquid supply device through a pesticide air inlet pipe, the internal cavity of the pesticide liquid supply device is a closed cavity, and the pesticide liquid The gas pressure reducing valve is located on the pesticide air inlet pipe.

Preferably, the pesticide liquid supply device is provided with a second air pressure gauge and a second pressure reducing valve, and the pesticide liquid supply device transports pesticide liquid to the inner needle and the single-axis needle through a pesticide delivery pipe. The pesticide delivery pipe is provided with a second flow control valve.

Preferably, a pesticide receiving device for receiving pesticides is also included.

In the above technical solution, the mixed pesticide microcapsule mixing and preparation device provided by the present invention includes a uniaxial needle, a coaxial needle, a shell liquid supply device and a pesticide liquid supply device. The coaxial needle includes an inner needle and a sheath set outside the inner needle. The outer needle, the pesticide liquid supply device is used to transport chemical liquid to the single-axis needle and the inner needle, and the shell material liquid supply device is used to transport capsule material to the outer needle.

It can be seen from the above description that in the mixed pesticide microcapsule mixing and preparation device provided by the present application, a single-axis needle is provided to process pesticides that do not contain shell capsule materials, and a coaxial needle is used to process pesticides that contain capsule materials, so that during the use of pesticides, , pesticides that do not contain capsule materials are released and used first. The pesticides containing the capsule material are slowly released as the capsule material decomposes and the pesticide diffuses, so that the pesticide can be fully used and the usage rate of the pesticide is increased.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a mixed pesticide microcapsule mixing and preparation device provided by an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a pesticide microcapsule provided by an embodiment of the present invention;

Figure 3 is a schematic structural diagram of the pesticide polymer microspheres provided by the embodiment of the present invention;

Figure 4 is a schematic structural diagram of the first array module, coaxial needle and single-axis needle provided by the embodiment of the present invention;

Figure 5 is a top view of Figure 4;

Figure 6 is a schematic structural diagram of the second array module, coaxial needle and single-axis needle provided by the embodiment of the present invention;

Figure 7 is a top view of Figure 6;

Figure 8 is a schematic structural diagram of a third array module, a coaxial needle and a single-axis needle provided by an embodiment of the present invention;

FIG. 9 is a top view of FIG. 8 .

Among them, in Figure 1-9: 1. Conductive plate; 2. Electrode plate; 3. High-voltage power supply; 4. Gas storage tank; 5. Shell gas pressure reducing valve; 6. Shell liquid reservoir; 7. Pump;

8. Shell liquid supply device; 8-1. First pressure reducing valve; 8-2. First pressure gauge;

9. First flow control valve; 10. Shell material delivery pipe; 11. Pesticide delivery pipe; 12. Inner needle raw solution inlet; 13. Outer needle raw solution inlet; 14. Single-axis needle raw solution inlet; 15. Outer needle; 16. Inner needle; 17. Pesticide microcapsule; 18. Uniaxial needle; 19. Pesticide polymer microspheres; 20. Array module; 21. Pesticide liquid gas pressure reducing valve; 22. Pesticide liquid reservoir;

23. Pesticide liquid supply device; 23-1. Second pressure reducing valve; 23-2. Second air pressure gauge;

24. Second flow control valve.

Detailed ways

The core of the present invention is to provide a mixing and preparation device for mixed pesticide microcapsules to improve the utilization rate of pesticides.

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the drawings and embodiments.

Please refer to Figures 1 to 9. In a specific implementation, the mixed pesticide microcapsule mixing and preparation device provided by specific embodiments of the present invention includes a single-axis needle 18, a coaxial needle, a shell material liquid supply device 8 and a pesticide liquid supply device. Device 23, in which the uniaxial needles 18 and coaxial needles can be arranged in an array on a two-dimensional plane. The coaxial needle includes an inner needle 16 and an outer needle 15 that is sleeved outside the inner needle 16. The inner needle 16 and the outer needle 15 are coaxially arranged. The pesticide liquid supply device 23 is used to transport the pesticide liquid to the single-axis needle 18 and the inner needle 16 , and the shell material liquid supply device 8 is used to transport the capsule material to the outer needle 15 . Preferably, there are multiple uniaxial needles 18 and coaxial needles, and the whole is arranged in an array. In order to facilitate the collection of pesticides, preferably, the mixed pesticide microcapsule mixing and preparation device also includes a pesticide receiving device for receiving pesticides. Specifically, the pesticide receiving device can be a metal plate, a roller, a conveyor belt, a liquid receiving pool, etc. according to actual needs, so that The prepared pesticide microcapsules 17 and pesticide polymer microspheres 19 are collected.

In order to facilitate the disassembly and assembly of the mixed pesticide microcapsule preparation device, preferably, the conductive plate 1 is composed of a plurality of detachably connected array modules 20. At least one uniaxial needle 18 and at least one coaxial needle are installed on the array module 20, as shown in Figure 4 shown. The number of uniaxial needles 18 and coaxial needles on the needle module can be adjusted to achieve precise control of the burst and sustained release properties of the pesticide microcapsules 17 and pesticide polymer microspheres 19. Specifically, as shown in Figure 8, The number ratio of the uniaxial needles 18 and the coaxial needles on the array module 20 is 1:2. Specifically, the number ratio of the uniaxial needles 18 and the coaxial needles on at least one array module 20 on the conductive plate is 1:2. The number of single-axis needles 18 and coaxial needles on the array module 20 can be set freely. Of course, as shown in FIG. 6 , at least the number ratio of the uniaxial needles 18 and the coaxial needles on the array module 20 can be 2:1. Specifically, the ratio of the uniaxial needles 18 and the coaxial needles on at least one array module 20 on the conductive board can be 2:1. The ratio of the number of needles is 2:1, and the number of single-axis needles 18 and coaxial needles on other array modules 20 can be freely set. Of course, needle modules composed of other numbers of coaxial and uniaxial needles 18 can also be selected according to different requirements for the burst release and sustained release properties of the pesticide microcapsules 17 and the pesticide polymer microspheres 19 . Specifically, a stable cone-jet structure is formed on the top of the needle of the needle module, and is broken down to form pesticide microcapsules 17 and pesticide polymer microspheres 19 respectively. The outer shell of the pesticide microcapsule 17 is a polymer material, and the inner core is made of a mixture of polymer and pesticide. Among them, the pesticide polymer microsphere 19 is made of a mixture of polymer and pesticide.

When preparing mixed pesticide microcapsules, the original solution in the pesticide reservoir 22 can be a mixed solution of polymers and pesticides, and the original solution in the shell material reservoir 6 can be a polymer solution. Pump into the sealed pesticide liquid supply device 23 and shell material liquid supply device 8. The raw liquid in the pesticide liquid supply device 23 enters the inner needle 16 and the single-axis needle 18, and the raw liquid in the shell material liquid supply device 8 enters the outer needle 15. , specifically, the single-axis needle 18 and the coaxial needle output end are discharged under the action of a high-voltage power supply. Specifically, by setting a high voltage between the conductive plate 1 and the electrode plate 2, the shear formed by the electric field force Under the action of force, individual pesticide particles are formed.

It can be seen from the above description that in the mixed pesticide microcapsule mixing and preparation device provided by the specific embodiment of the present application, the pesticides that do not contain the shell capsule material are processed by setting the single-axis needle 18, and the pesticides that contain the capsule material are processed by the coaxial needle, so that During the use of pesticides, pesticides that do not contain capsule materials are released and used first. Pesticides containing capsule materials are slowly released as the capsule materials decompose and the pesticides diffuse, so that the pesticides can be fully used and the pesticide usage rate is increased.

The mixed pesticide microcapsule mixing and preparation device can control the burst release and sustained release properties of the prepared mixed pesticide microcapsules by controlling the number of uniaxial needles 18 and coaxial needles on the module, thereby improving the use efficiency of pesticides and reducing the consumption of pesticides. The cost of use reduces the harm to the environment and people, and it has broad application prospects and high potential application value.

Using a clustered needle array to prepare pesticide microcapsules 17 and pesticide polymer microspheres 19 improves the production efficiency of pesticide microcapsules 17 and pesticide polymer microspheres 19, and can control the needle composition and shell material on the array. The pesticide release performance of the prepared mixed pesticide microcapsules can be controlled by controlling the flow rate of the original solution and pesticide original solution, the inner shell material original solution, and the composition of the pesticide original solution, thereby achieving one-step preparation of mixed pesticide microcapsules.

Preferably, the mixed pesticide microcapsule mixing and preparation device also includes a high-voltage power supply 3, a conductive plate 1 connected to the positive end of the high-voltage power supply 3, and an electrode plate 2 connected to the negative pole of the high-voltage power supply 3. The uniaxial needle 18 and the coaxial needle are both It is installed on the conductive plate 1, the conductive plate 1 and the electrode plate 2 are arranged facing each other, and the output end of the uniaxial needle 18 and the coaxial needle is located between the conductive plate 1 and the electrode plate 2. Mixed pesticide microcapsules are prepared using electroatomization technology. The microcapsules prepared have the advantages of uniform size, complete structure, high pesticide encapsulation rate, and easy reception.

Further, the mixed pesticide microcapsule mixing and preparation device also includes a gas storage tank 4 and a shell material gas pressure reducing valve 5. The gas storage tank 4 is connected to the shell material liquid supply device 8 through the shell material air inlet pipe. The shell material liquid supply device 8 The internal cavity is a closed cavity, and the shell gas pressure reducing valve 5 is located on the shell air inlet pipe. Preferably, the shell material liquid supply device 8 is provided with a first air pressure gauge 8-2 and a first pressure reducing valve 8-1. The shell material liquid supply device 8 transports shell material to the outer needle 15 through the shell material delivery pipe 10. The material transport pipe 10 is provided with a first flow control valve 9 .

Furthermore, the mixed pesticide microcapsule mixing and preparation device also includes a pesticide liquid gas pressure reducing valve 21. The gas storage tank 4 is connected to the pesticide liquid supply device 23 through the pesticide air inlet pipe. The internal cavity of the pesticide liquid supply device 23 is a closed cavity. body, the pesticide liquid gas pressure reducing valve 21 is located on the pesticide air inlet pipe. Preferably, the pesticide liquid supply device 23 is provided with a second air pressure gauge 23-2 and a second pressure reducing valve 23-1. The pesticide liquid supply device 23 delivers pesticide liquid to the inner needle 16 and the single-axis needle 18 through the pesticide delivery pipe 11. , the pesticide delivery pipe 11 is provided with a second flow control valve 24.

During operation, both the shell material liquid supply device 8 and the pesticide liquid supply device 23 are closed cavities. After the shell material raw liquid and the pesticide raw liquid gradually flow into the cavity, the gas above the liquid is gradually compressed, and the air pressure gradually increases, causing the shell material raw liquid to flow into the cavity. and the outflow speed of the pesticide liquid gradually increase until the inflow amount of the original liquid in the shell material liquid supply device 8 and the pesticide liquid supply device 23 is consistent with the outflow amount.

Since when actually preparing mixed pesticide microcapsules, the volume of the shell material stock solution and the pesticide stock solution flowing into the shell material liquid supply device 8 and the pesticide liquid supply device 23 per unit time is small and can be ignored compared with the gas volume in the cavity. The gas volume in the shell material liquid supply device 8 and the pesticide liquid supply device 23 can be regarded as constant, that is, the air pressure in the shell material liquid supply device 8 and the pesticide liquid supply device 23 always remains stable and constant, so that the shell material liquid supply device 8 and the pesticide liquid supply device 23 The flow rate of the shell material raw liquid and the pesticide raw liquid output by the liquid supply device 23 remains unchanged, thereby achieving the effect of stabilizing the flow rates of the shell material raw liquid and the pesticide raw liquid.

When the flow rate of the shell material stock solution and the pesticide stock solution is very large, the volume of liquid flowing into the shell material liquid supply device 8 and the pesticide liquid supply device 23 per unit time cannot be ignored compared to the gas volume in the cavity, and the shell material liquid supply device 8 and the pesticide liquid supply device 23 cannot be ignored. The gas volume in the liquid supply device 23 will be greatly compressed to provide sufficient air pressure, so that the outflow and inflow of the raw liquid from the shell material liquid supply device 8 and the pesticide liquid supply device 23 remain consistent. At this time, the shell material liquid supply device 8 and the pesticide liquid supply device 23 cannot play a role in stabilizing the flow rate of the shell material liquid and pesticide liquid. It is necessary to open the shell gas pressure reducing valve 5 and the pesticide liquid gas pressure reducing valve 21 to allow the gas storage tank to The gas in 4 enters the shell liquid supply device 8 and the pesticide liquid supply device 23 to ensure the stability of the gas volume in the shell liquid supply device 8 and the pesticide liquid supply device 23. The pressure of the first pressure reducing valve 8-1 and the second pressure reducing valve 23-1 can be set to a critical value (generally the stable internal pressure of the shell material liquid supply device 8 and the pesticide liquid supply device 23 when working or the shell material liquid supply device 8 and the maximum internal pressure that the pesticide liquid supply device 23 can withstand), when the air pressure in the shell liquid supply device 8 and the pesticide liquid supply device 23 is greater than this critical value, the first pressure reducing valve 8-1 and the second The pressure reducing valve 23-1 is opened to reduce the air pressure in the shell material liquid supply device 8 and the pesticide liquid supply device 23 until it reaches a critical value. The first air pressure gauge 8-2 and the second air pressure gauge 23-2 display the air pressure values in the shell liquid supply device 8 and the pesticide liquid supply device 23 in real time, so as to ensure that the pressure in the shell liquid supply device 8 and the pesticide liquid supply device 23 is The air pressure is stable. The shell material liquid and pesticide liquid flowing out from the shell material liquid supply device 8 and the pesticide liquid supply device 23 reach the corresponding outlets through the first flow control valve 9 and the second flow control valve 24 respectively, and are respectively injected into the array module 20 after being diverted through the pipeline. The corresponding entrance to the corresponding location.

Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A mixed pesticide microcapsule mixing and preparation device, characterized in that it includes a uniaxial needle (18), a coaxial needle, a shell material liquid supply device (8) and a pesticide liquid supply device (23). The coaxial needle It includes an inner needle (16) and an outer needle (15) set outside the inner needle (16). The pesticide liquid supply device (23) is used to supply the single-axis needle (18) and the inner needle (16) To transport medicinal liquid, the shell material liquid supply device (8) is used to deliver capsule material to the outer needle (15); It also includes a high-voltage power supply (3), a conductive plate (1) connected to the positive end of the high-voltage power supply (3), and an electrode plate (2) connected to the negative end of the high-voltage power supply (3). The single-axis needle ( 18) and the coaxial needle are installed on the conductive plate (1), the conductive plate (1) and the electrode plate (2) are arranged facing each other, the uniaxial needle (18) and the The output end of the coaxial needle is located between the conductive plate (1) and the electrode plate (2); It also includes a gas storage tank (4) and a shell gas pressure reducing valve (5). The gas storage tank (4) is connected to the shell liquid supply device (8) through the shell air inlet pipe. The internal cavity of the liquid supply device (8) is a closed cavity, and the shell gas pressure reducing valve (5) is located on the shell air inlet pipe; It also includes a pesticide liquid gas pressure reducing valve (21). The gas storage tank (4) is connected to the pesticide liquid supply device (23) through a pesticide air inlet pipe. The internal cavity of the pesticide liquid supply device (23) In order to seal the cavity, the pesticide liquid gas pressure reducing valve (21) is located on the pesticide air inlet pipe. 2. The mixed pesticide microcapsule mixing and preparation device according to claim 1, characterized in that the conductive plate (1) is composed of a plurality of detachably connected array modules (20), and the array module (20) At least one said uniaxial needle (18) and at least one said coaxial needle are installed. 3. The mixed pesticide microcapsule mixing and preparation device according to claim 2, characterized in that the number ratio of the uniaxial needles (18) and the coaxial needles on at least one of the array modules (20) is 1:2. 4. The mixed pesticide microcapsule mixing and preparation device according to claim 2, characterized in that the number ratio of the uniaxial needles (18) and the coaxial needles on at least one of the array modules (20) is 2:1. 5. The mixed pesticide microcapsule mixing and preparation device according to claim 4, characterized in that the shell liquid supply device (8) is provided with a first air pressure gauge (8-2) and a first pressure reducing valve ( 8-1), the shell material liquid supply device (8) delivers shell material to the outer needle (15) through the shell material delivery pipe (10), and the shell material delivery pipe (10) is provided with a first flow rate Control valve (9). 6. The mixed pesticide microcapsule mixing and preparation device according to claim 1, characterized in that the pesticide liquid supply device (23) is provided with a second air pressure gauge (23-2) and a second pressure reducing valve (23). -1), the pesticide liquid supply device (23) delivers pesticide liquid to the inner needle (16) and the single-axis needle (18) through the pesticide delivery pipe (11), and the pesticide delivery pipe (11) A second flow control valve (24) is provided. 7. The device for mixing and preparing mixed pesticide microcapsules according to any one of claims 1 to 6, further comprising a pesticide receiving device for receiving pesticides.