CN201888177U - Automatic medicine mixing device - Google Patents

Abstract

The utility model relates to an automatic drug mixing device, in particular to a novel drug mixing device which stores pesticide stock solution and water separately and mixes them quickly and automatically and uniformly, and is suitable for different drug mixing conditions. The device is mainly composed of a jet part and a spiral part. The jet part mainly includes an adjusting gasket 1, a jet nozzle 2, a suction chamber 3, a suction port joint 4, a main body of the jet mixing device 5, a mixing tube 6 and a diffusion tube 7. ; The spiral part is mainly composed of a spiral unit 8 and a spiral shell 9 . In order to adapt to different drug mixing conditions, the utility model designs the jet nozzle 2, the suction port joint 4 and the screw unit 8 into detachable and replaceable forms. The utility model realizes independent storage of pesticide stock solution and water, and fast and automatic mixing evenly, and is suitable for various mixing working conditions.

Description

An automatic drug mixing device

technical field

The utility model relates to an automatic drug mixing device, in particular to a novel drug mixing device which is stored separately from pesticide and water and mixed quickly and automatically and evenly, and is suitable for different drug mixing conditions, and belongs to the technical field of plant protection machinery.

Background technique

The performance of the mixing device of plant protection machinery is directly related to the effect of agricultural environmental protection and control, and has been paid attention by relevant researchers. At present, the domestic and foreign plant protection machinery mainly adopts the pre-mixing method, that is, the pesticide and water are mixed in the mixing tank and then sprayed. This pre-mixing method cannot realize on-demand mixing and has the disadvantages of wasting pesticides, polluting the environment and low mixing quality.

In the prior art, the applicant has not found a drug mixing device that comprehensively considers the rapid and uniform drug mixing properties and adapts to various drug mixing conditions. When searching the existing patents of similar technologies, it was found that the Chinese patent "drug mixing device" with the application date of 1994.4. Mixture of pesticides and water. The device is mainly composed of a water bottle, a drug solution bag and a drug mixer. The drug mixer is provided with a water injection hole and a liquid suction hole. The negative pressure generated and the positive pressure of the water flow in the water injection hole make the pesticide enter the mixing device from the liquid medicine bag to mix the pesticide and water; the application date is 2005.8.4 and the application number is 200510041334.4. Method for Separating Pesticides and Water" discloses a method for separating pesticides and water in a sprayer. In this method, pesticides and water are stored in containers with scales, and the main consideration is the accurate measurement of pesticides and water; the date of application is On May 6, 2008, the Chinese patent "Variable Spray Automatic Mixing Device" with the application number of 200810027898 disclosed a drug mixing device. And other issues. Considering the mixing devices in the above-mentioned existing patents, although the problem of separate storage and online mixing of pesticides and water has been considered, the rapid and uniform mixing of pesticides and water, and the adaptation to various mixing conditions have not been comprehensively considered. .

Contents of the invention

The purpose of this utility model is to design a new type of pesticide stock solution and water to be stored separately for the shortcomings of the existing technology, and to use the negative pressure and turbulent mixing principle to achieve automatic, rapid and uniform mixing of pesticides and water, and to adapt to multi-mixing conditions. Automatic mixing device. The utility model has the advantages of simple structure, convenience and practicality, and is suitable for a knapsack-type manual sprayer or a vehicle-mounted large and medium-sized boom sprayer.

In order to achieve the above object, the technical solution adopted by the utility model is: the whole automatic medicine mixing device is composed of two parts: a jet part and a spiral part. In order to facilitate disassembly, the jet part and the helical part are threaded.

The jet part is composed of a cylindrical jet mixing device main body, jet nozzle, adjusting gasket and suction port joint. One end is a high-pressure water inlet, and the end of the high-pressure water inlet is equipped with a jet nozzle. After entering the main body of the jet mixing device, the high-pressure water passes through The jet nozzle produces high-speed water flow. An adjusting gasket is provided between the jet nozzle and the main shell of the jet mixing device to adjust the distance between the jet nozzle and the mixing tube. A suction chamber is formed between the jet nozzle and the main shell of the jet mixing device. The water flow enters the suction chamber that generates vacuum from the jet nozzle, and the suction port connector is connected to the side of the suction chamber, and the suction port connector is connected to the pesticide box. After the suction chamber along the water flow direction, there are mixing tubes and diffusion tubes in sequence, and pesticides and water enter the mixing tube. Primary mixing then enters the diffuser tube to pressurize the primary mixture.

The spiral part is used to evenly mix the preliminary mixed liquid, including the spiral shell and the spiral unit. The spiral unit is composed of 3 to 5 helical blades. The helical blade is twisted by a rectangular plate with an aspect ratio of 1 or 1.25 and a thickness of 1 to 3 mm. Formed at 180°, the connection relationship between one end of the helical blade and one end of the other helical blade is 90° cross welding.

The jet nozzle is made of brass or ordinary carbon steel, and its convergence angle α is 14°-16°. In order to adapt to different drug mixing conditions, the diameter of the jet nozzle is designed in a variety of ways, but the convergence angle remains the same.

The above-mentioned adjusting gasket is composed of 1 to 3 annular gaskets, and each annular gasket is made of ordinary carbon steel with a thickness of 0.8 to 1.2 mm.

The length of the mixing tube is 4 to 6 times its inner diameter.

When the jet nozzle is installed, its axis coincides with the axis of the main body of the cylindrical jet mixing device.

The suction port connector includes a suction pipe, and the suction port connector is threadedly connected to the main casing of the jet mixing device. In order to adapt to different drug mixing conditions, suction port connectors with different inner diameters can be replaced.

The diffusion angle of the above-mentioned diffusion tube is 8°-10°, and its length is consistent with that of the mixing tube.

At the high-pressure water inlet, a section of internal thread connected with the pipeline of the sprayer is designed.

Compared with the prior art, the utility model has the following advantages: (1) the pesticide is sucked into the suction chamber due to the effect of vacuum, and does not need the medicine box to provide power, thereby saving the power source; (2) for different mixing Pharmaceutical working conditions (mainly referring to the amount of spraying, the different physical properties of pesticides, etc.) can change the jet nozzle, suction port joint and spiral blade and adjust the adjusting gasket to change the jet flow without changing the shell of the automatic mixing device. The distance between the nozzle and the mixing tube can meet the needs of different mixing conditions; (3) The structure of the mixing device is small, and the pesticide and water are turbulently mixed in the device, which saves mixing time; (4) ) Pesticides and water are initially mixed in the mixing tube, and will be more uniform after entering the spiral part to continue mixing.

The utility model solves the problem of reducing the mixing time while achieving the uniform mixing of pesticides and water, further solves the problem of variable spray delay, and also meets the needs of different mixing conditions. It is suitable for backpack type manual Sprayer or vehicle-mounted large and medium-sized boom sprayer.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the whole system implementing the utility model.

Fig. 3 is a partial schematic diagram of the helical unit.

In the figure, 1-regulating gasket, 2-jet nozzle, 3-suction chamber, 4-suction inlet joint, 5-jet mixing device main body, 6-mixing tube, 7-diffusion tube, 8-spiral unit, 9- Spiral casing, 10-water tank, 11-valve, 12-pressure gauge, 13-flow meter, 14-jet mixing device, 15-spray head, 16-medicine box, 17-centrifugal pump.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

The structure schematic diagram of the utility model is shown in Fig. 1, mainly consists of jet and spiral two parts. The jet part includes an adjusting gasket 1, a jet nozzle 2, a suction chamber 3, a suction port joint 4, a main body of the jet mixing device 5, a mixing tube 6, a diffuser tube 7, a spiral unit 8 and a spiral shell 9.

In conjunction with Fig. 2, when the utility model is actually implemented, the sprayer pipeline is provided with a valve 11, a pressure gauge 12 and a flow meter 13 which are convenient for adjusting and detecting the flow. The high-pressure water inlet a of the mixing device is connected with the spray pipeline of the sprayer through a threaded connection, and is sealed by a gasket. During operation, when the high-pressure water flow from the centrifugal pump encounters the suddenly reduced part of the jet nozzle 2, a vacuum is formed in the suction chamber 3, and the vacuum drives the pesticide to enter the mixing tube 6 from the medicine box 16 through the suction port b, and the pesticide and water are in the mixing tube 6. Preliminary mixing is carried out in the mixing tube 6, and the mixed solution after the preliminary mixing is pressurized by the diffusion tube 7 and enters the spiral unit 8 to continue mixing, and the uniform mixed solution after mixing is sprayed on the crops through the nozzle 15. Numerical simulation experiments have found that the fluid velocity in the device reaches 20-30m/s, so the mixing speed is fast, which reduces the mixing time, thereby reducing the spray delay time; and the mixture at the outlet c of the drug mixing device is also quite uniform.

When implementing the utility model, if facing different drug mixing conditions, such as working conditions such as high viscosity of pesticides, it can be replaced with a jet nozzle with a small diameter, a small suction port joint of the suction pipe and an increase in the number of spiral units.

可知，此时水流的压力减小，从而在吸入室内形成真空度，该真空度抽吸农药从药箱经吸入口进入混合管，农药和水在混合管内初步湍流混合，初步混合后的混合液经扩散管增压后进入螺旋部分继续湍流混合，混合后的均匀混合液经喷头喷洒到作物上。此外，本实用新型中射流嘴，吸入口接头，螺旋叶片等在不更换混药装置壳体的情况下都是可以更换或调节的，从而能适应不同的混药工况。The working principle of the utility model is as follows: when the high-pressure water flow encounters the suddenly shrinking part of the jet nozzle, the speed increases, which is determined by the Bernoulli equation

It can be seen that the pressure of the water flow decreases at this time, thereby forming a vacuum degree in the suction chamber. The vacuum degree sucks the pesticide from the medicine box through the suction port and enters the mixing tube. The pesticide and water are initially turbulently mixed in the mixing tube. After being pressurized by the diffusion tube, it enters the spiral part to continue turbulent mixing, and the uniform mixed liquid after mixing is sprayed on the crops through the nozzle. In addition, in the utility model, the jet nozzle, the suction port joint, the helical blade, etc. can all be replaced or adjusted without changing the casing of the drug mixing device, so that it can adapt to different drug mixing conditions.

Claims (8)

1. An automatic drug mixing device, characterized in that it consists of a jet part and a helical part, and the jet part and the helical part are connected by threads; The jet part is composed of a cylindrical jet mixing device main body (5), a jet nozzle (2), an adjusting gasket (1) and a suction port joint (4). One end of the jet mixing device main body (5) is High-pressure water inlet, the end of the high-pressure water inlet is provided with a jet nozzle (2), and an adjusting gasket (1) is arranged between the jet nozzle (2) and the casing of the main body (5) of the jet mixing device. A suction chamber (3) is formed between the jet nozzle (2) and the casing of the main body (5) of the jet mixing device, and a suction port joint (4) is connected to one side of the suction chamber (3), and the suction chamber (3) is sucked along the water flow direction. ) followed by mixing tube (6) and diffuser tube (7). The helical part includes a helical unit (8) and a helical housing (9), the helical unit (8) is composed of 3 to 5 helical blades, and the helical blade is made of a material with an aspect ratio of 1 or 1.25 and a thickness of 1 to 3 mm. The rectangular plate is formed by twisting 180°, and the connection relationship between one end of the helical blade and one end of the other helical blade is 90° cross-welding. 2. The automatic medicine mixing device according to claim 1, characterized in that, at the inlet of the high-pressure water, a section of internal thread connected with the pipeline of the sprayer is designed. 3. An automatic medicine mixing device according to claim 1, characterized in that, the adjusting gasket (1) is composed of 1 to 3 annular gaskets, and each annular gasket is made of ordinary carbon steel , with a thickness of 0.8 to 1.2 mm. 4. A kind of automatic drug mixing device according to claim 1, characterized in that, the material of the jet nozzle (2) is brass or ordinary carbon steel, and the convergence angle α of the jet nozzle is 14°～ 16°. 5. The automatic medicine mixing device according to claim 1, characterized in that the axis of the jet nozzle (2) coincides with the axis of the main body of the jet mixing device. 6. An automatic drug mixing device according to claim 1, characterized in that, the suction port connector (4) is threadedly connected to the casing of the main body (5) of the jet fluid drug mixing device; the suction port connector (4) With suction pipe. 7. An automatic medicine mixing device according to claim 1, characterized in that the length of the mixing tube (6) is 4 to 6 times its inner diameter. 8. An automatic drug mixing device according to claim 1, characterized in that the diffusion angle β of the diffusion tube (7) is 8° to 10°, and the length of the diffusion tube is consistent with the length of the mixing tube .

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