CN115228317A - A kind of fertilizer preparation device and method for flue-cured tobacco planting - Google Patents

Abstract

The invention discloses a fertilizer preparation device and method for flue-cured tobacco planting. The preparation device includes a preparation box, a first material storage tank and a second material storage tank. A first material storage tank is fixedly installed on the left side wall of the preparation box. A sprinkler head, a second sprinkler head is fixedly installed on the right side wall of the preparation box, and the first sprinkler head and the second sprinkler head are coaxially arranged, the first storage tank is used for storing liquid fertilizer, the second sprinkler head is The storage tank is used to store the emulsifiable concentrate pesticide, the bottom of the first storage tank is matched with one end of the first feeding pipe, and the other end of the first feeding pipe is matched with the first spray head, so the The bottom of the second storage tank is matched with one end of the second feeding pipe, and the spraying amount of the first nozzle and the second nozzle can be adjusted through the control mechanism, and the overall structure of the control mechanism is simple, easy to control, and cost. low and wider range of use.

Description

Device and method for preparing fertilizer for planting flue-cured tobacco

technical field

The invention relates to the technical field of agricultural equipment, in particular to a fertilizer preparation device and method for flue-cured tobacco planting.

Background technique

In the process of growing flue-cured tobacco, it is often necessary to spray pesticides and apply chemical fertilizers, which can ensure the increase of flue-cured tobacco production and income. There are many types of pesticides in my country, and there are many dosage forms. EC pesticides account for a large proportion of pesticide dosage forms in China and have a wide range of applications. In the adjustment of fertilizer structure, liquid fertilizer is regarded as the key element of "three-dimensional fertilization", which is one of the development trends of the world's chemical fertilizer industry. With the development of agricultural production and the continuous advancement of science and technology, the creation of a product that combines medicine and fertilizer has become a research hotspot for agricultural technicians. Mixing the same type of emulsifiable oil pesticide and liquid fertilizer for spraying can not only reduce the labor intensity of farmers , save labor and cost, and expand the use function of the original product, which has important practical significance. The liquid medicinal fertilizer prepared by mixing liquid fertilizer and pesticide is convenient to apply. While killing crop pests, it can timely carry out nutritional conditioning on flue-cured tobacco to make flue-cured tobacco grow robustly. However, in the process of mixing liquid fertilizers and emulsifiable concentrate pesticides, liquid fertilizers are aqueous solutions, and pesticides in the form of emulsifiable concentrates are oil solutions. The two are not easy to mix, and the mixing effect is relatively poor.

Contents of the invention

The invention overcomes the deficiencies of the prior art and provides a fertilizer preparation device and method for planting flue-cured tobacco.

The technical scheme that the present invention adopts for achieving the above object is:

The first aspect of the present invention discloses a fertilizer preparation device for planting flue-cured tobacco. The preparation device includes a preparation box, a first storage tank and a second storage tank. The left side wall of the preparation box is fixedly installed with The first spray head, the second spray head is fixedly installed on the right side wall of the preparation box, and the first spray head and the second spray head are arranged coaxially;

The first storage tank is used to store liquid fertilizers, the second storage tank is used to store emulsifiable concentrate pesticides, the bottom of the first storage tank is matched with one end of the first feeding pipe, and the second storage tank The other end of a feed pipe is connected with the first nozzle, the bottom of the second storage tank is connected with one end of the second feed pipe, and the other end of the second feed pipe is connected with the second feed pipe. The second nozzle is mated and connected;

The first feed pipe is provided with a first pump, the second feed pipe is provided with a second pump, and both the first feed pipe and the second feed pipe are provided with control mechanism.

Further, in a preferred embodiment of the present invention, at least one set of monitoring mechanisms are provided on the left and right side walls of the preparation box, and the monitoring mechanisms include a mounting frame, and a rotating frame is fixedly installed on the mounting frame. motor, the output end of the rotating motor is connected with a coupling, the coupling is connected with a threaded screw, the threaded screw is slidably connected with a sliding block, and the sliding block is fixedly connected with a fixed An optical camera is fixedly installed on the fixed plate, and an infrared sensor is arranged on the sliding block.

Further, in a preferred embodiment of the present invention, a guide rail is fixedly installed on the installation frame, a guide block is fixedly connected to the sliding block, the guide block is embedded in the guide rail, and the guide block can move along the slide on the guide rail.

Further, in a preferred embodiment of the present invention, the control mechanism includes a casing, a partition plate is arranged inside the casing, a first housing seat is provided on one side of the partition plate, and the other side of the partition plate One side is provided with a second shell seat, and the bottom of the first shell seat is provided with several sliding grooves along the circumferential direction, and a plug is slidably connected in the sliding grooves.

Furthermore, in a preferred embodiment of the present invention, several electromagnetic blocks are arranged on the inner wall of the housing along the circumferential direction.

Further, in a preferred embodiment of the present invention, the plug is fixedly connected to one end of the connecting rod, and the other end of the connecting rod penetrates the side wall of the first shell seat and extends into the housing, And the other end of the connecting rod is fixedly connected to the iron block, the outer wall of the first housing base is fixedly connected to one end of the elastic spring, the other end of the elastic spring is fixedly connected to the iron block, and the connection The rod is sleeved in the elastic spring.

Further, in a preferred embodiment of the present invention, a flow hole is opened at the bottom of the sliding groove, and the flow hole runs through the bottom of the second housing seat.

Further, in a preferred embodiment of the present invention, a first connection block is fitly connected in the first housing seat, and a first threaded hole is opened on the first connection block, and the second housing seat A second connection block is connected to the inner fit, and a second threaded connection hole is opened on the second connection block.

Another aspect of the present invention discloses a control method for a fertilizer preparation device for planting flue-cured tobacco, which is applied to any one of the fertilizer preparation devices for planting flue-cured tobacco, including the following steps:

Obtain the image information of the jet area through the optical camera;

extracting parameter information of the jet region based on the image information, wherein the parameter information includes contour information of the jet region;

Extracting the first coordinate value of the nearest node from the lateral jet area and the radial jet area to the jet stagnation point based on the parameter information;

extracting the second coordinate values of the nodes farthest from the jet stagnation point in the lateral jet region and the radial jet region based on the parameter information;

calculating a jet circulation coefficient based on the first coordinate value and the second coordinate value;

The spray volumes of the first spray head and the second spray head are adjusted in real time based on the jet circulation coefficient.

Further, in a preferred embodiment of the present invention, adjusting the spray volumes of the first nozzle and the second nozzle in real time based on the jet circulation coefficient, specifically includes the following steps:

If the jet circulation coefficient is greater than or equal to 1, then reduce the spray volume of the first nozzle and the second nozzle;

If the jet circulation coefficient is greater than 0 and less than 1, the spraying amount of the first nozzle and the second nozzle is not adjusted;

If the jet circulation coefficient is less than or equal to 0, the spraying volume of the first spray head and the second spray head will be increased.

The present invention solves the technical defects existing in the background technology, and the present invention has the following beneficial effects: the symmetrical arrangement of the first nozzle and the second nozzle will greatly promote the process of transferring momentum, heat and mass between the emulsifiable pesticide and the liquid fertilizer , and then greatly improve the interphase transfer coefficient of the two, so as to realize the rapid and efficient mixing process of emulsifiable pesticides and liquid fertilizers, so as to obtain liquid fertilizers. Compared with traditional stirring and mixing devices, the mixing efficiency is higher and the mixing effect is better. it is good. The spraying volume of the first spray head and the second spray head can be adjusted through the control mechanism, and the overall structure of the control mechanism is simple, easy to control, low in cost, and wider in use. The monitoring mechanism can obtain images of the jet flow area in all directions, and then preprocess and integrate these images, so as to obtain the contour shape information of the jet flow area.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain the drawings of other embodiments according to these drawings without creative work.

Fig. 1 is the first three-dimensional structure schematic diagram of fertilizer preparation device;

Fig. 2 is the second three-dimensional structure schematic diagram of fertilizer preparation device;

Fig. 3 is a schematic diagram of the structure of the monitoring mechanism;

Fig. 4 is a schematic diagram of the first three-dimensional structure of the control mechanism;

Fig. 5 is a schematic diagram of the second three-dimensional structure of the control mechanism;

Fig. 6 is a schematic diagram of the internal structure of the control mechanism when the electromagnetic block is powered off;

Fig. 7 is a schematic diagram of the internal structure of the control mechanism when the electromagnetic block is energized;

Reference signs are explained as follows: 101, preparation box; 102, first storage tank; 103, second storage tank; 104, first nozzle; 105, second nozzle; 106, first feeding pipe; 107, second Two feeding pipes; 108, the first pumping pump; 109, the second pumping pump; 201, the control mechanism; 202, the mounting frame; 203, the rotating motor; 204, the shaft coupling; 205, the threaded screw rod; 206, Sliding block; 207, fixed plate; 208, optical camera; 209, guide rail; 301, guide block; 302, housing; 303, spacer plate; 304, first shell seat; 305, second shell seat; ; 307, plug; 308, electromagnetic block; 309, connecting rod; 401, iron block; 402, elastic spring; 403, flow hole; 404, the first connecting block; 405, the first threaded screw hole; 406, The second connection block; 407, the second threaded hole; 408, the monitoring mechanism.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. structure, so it only shows the configuration related to the present invention, and it should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

In the description of this application, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientations or positional relationships indicated by vertical, horizontal, top, bottom, inner, and outer are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and The description is simplified rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific situations.

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

As shown in Figures 1 and 2, the first aspect of the present invention discloses a fertilizer preparation device for planting flue-cured tobacco. The preparation device includes a preparation box 101, a first storage tank 102 and a second storage tank 103. The first shower head 104 is fixedly installed on the left side wall of the preparation box 101, the second shower head 105 is fixedly installed on the right side wall of the preparation box 101, and the first shower head 104 and the second shower head 105 are coaxially arranged .

The first storage tank 102 is used to store liquid fertilizers, and the second storage tank 103 is used to store emulsifiable concentrate pesticides. The bottom of the first storage tank 102 is matched with one end of the first feeding pipe 106 and connected , the other end of the first feed pipe 106 is connected with the first nozzle 104, the bottom of the second storage tank 103 is connected with one end of the second feed pipe 107, and the second supply The other end of the material pipe 107 is matedly connected with the second spray head 105 .

The first feed pipe 106 is provided with a first feed pump 108, the second feed pipe 107 is provided with a second feed pump 109, and the first feed pipe 106 and the second feed The tubes 107 are provided with a control mechanism 201 .

It should be noted that, when it is necessary to prepare liquid fertilizer, the first material pump 108 and the second material pump 109 are controlled to be turned on at the same time, so that the first material pump 108 will store the liquid in the first storage tank 102 The fertilizer is drawn out along the first feeding pipe 106, and then the liquid fertilizer will form a high-speed fluid sprayed into the preparation tank 101 after being accelerated and pressurized at the first nozzle 104; meanwhile, the second pumping pump 109 will store the The emulsifiable pesticide in the second storage tank 103 is drawn out along the second feed pipe 107, and then the emulsifiable pesticide will form another high-speed fluid after being accelerated and pressurized at the second nozzle 105 and sprayed into the preparation box 101; The two streams of high-speed fluids will collide against each other in the preparation box 101, and the two streams of high-speed fluids will form a jet stagnation point after the first collision on the horizontal centerline, and then the radial jets produced by the stagnation point will be larger than the average of the two streams of high-speed fluids. The jet that swings left and right at the velocity of the flow velocity forms a radial jet area, and when the horizontal jet develops horizontally from side to side, due to the instability of the stagnation point, four vortices with opposite rotations will be formed up and down, thus forming a transverse jet area. Due to the non-periodic oscillating motion of radial jets and transverse jets produced by horizontally opposed impacts, it will greatly promote the process of transferring momentum, heat and mass between emulsifiable pesticides and liquid fertilizers, thereby greatly improving both. The phase-to-phase transfer coefficient, so as to realize the rapid and efficient mixing process of emulsifiable pesticides and liquid fertilizers, so as to obtain liquid fertilizers. Compared with traditional stirring and mixing devices, the mixing efficiency is higher and the mixing effect is better.

As shown in Figures 1 and 3, at least one set of monitoring mechanism 408 is provided on the left and right side walls of the preparation box 101, and the monitoring mechanism 408 includes a mounting frame 202, on which a rotating Motor 203, the output end of the rotating motor 203 is connected with a coupling 204, the coupling 204 is connected with a threaded screw 205, and the threaded screw 205 is slidably connected with a sliding block 206, the A fixed plate 207 is fixedly connected to the sliding block 206 , an optical camera 208 is fixedly installed on the fixed plate 207 , and an infrared sensor is arranged on the sliding block 206 .

A guide rail 209 is also fixedly installed on the mounting frame 202, a guide block 301 is fixedly connected to the sliding block 206, the guide block 301 is embedded in the guide rail 209, and the guide block 301 can be moved along the guide rail 209. slide.

It should be noted that in the jet area formed by two high-speed fluids, the emulsifiable pesticide and the liquid fertilizer, the emulsifiable pesticide and the liquid fertilizer will have intense collision and friction, so that they have the characteristics of mass transfer. During this process, the stabilized jet area A stable contour shape will be formed, and the distribution of the contour shape can reflect the mixing effect of the EC pesticide and the liquid fertilizer. Therefore, in the present invention, the image information of the jet area is captured in real time by the optical camera 208, and then the contour of the jet area is recognized according to the image information, thereby adjusting the spraying amounts of the first nozzle 104 and the second nozzle 105 according to the contour. , so as to improve the mixing effect and efficiency of EC pesticide and liquid fertilizer.

It should be noted that, by driving the rotary motor 203, the rotary motor 203 drives the coupling 204 to rotate, thereby driving the threaded screw 205 to rotate, so that the sliding block 206 can slide up and down along the threaded screw 205, thereby driving the optical camera 208 to Slide up and down along the preparation box 101, so that the optical camera can obtain image information of the jet area at different heights, and monitoring mechanisms 408 are provided on the left and right side walls of the preparation box 101, so that the optical camera 208 can be The image information of the jet area is obtained in different directions, so that the images of the jet area can be obtained in all directions, and then these images are preprocessed and integrated to obtain the contour shape information of the jet area.

As shown in Figures 6 and 7, the control mechanism 201 includes a casing 302, a partition plate 303 is arranged inside the casing 302, and a first shell seat 304 is provided on one side of the partition plate 303, and the partition plate The other side of 303 is provided with a second housing base 305 , and the bottom of the first housing base 304 is provided with several sliding grooves 306 along the circumferential direction, and a plug 307 is slidably connected in the sliding grooves 306 .

Several electromagnetic blocks 308 are arranged on the inner wall of the housing 302 along the circumferential direction.

The plug 307 is fixedly connected to one end of the connecting rod 309, and the other end of the connecting rod 309 extends into the housing 302 through the side wall of the first shell seat 304, and the connecting rod 309 The other end is fixedly connected to the iron block 401, the outer wall of the first shell seat 304 is fixedly connected to one end of the elastic spring 402, the other end of the elastic spring 402 is fixedly connected to the iron block 401, and the connecting rod 309 is sleeved in the elastic spring 402 .

A through hole 403 is defined at the bottom of the sliding groove 306 , and the through hole 403 penetrates through the bottom of the second housing base 305 .

It should be noted that the on-off and spraying volume of the first spray head 104 and the second spray head 105 can be controlled by the control mechanism 201 . Specifically, when it is necessary to enable liquid fertilizer to be sprayed by the first spray nozzle 104 or emulsifiable pesticides to be sprayed by the second spray nozzle 105, all electromagnetic blocks 308 on the control mechanism 201 are energized, and the electromagnetic blocks 308 after energization will generate Magnetic force, under the attraction of the magnetic force, the iron block 401 will be attracted to the electromagnetic block 308 (at this time, the elastic spring 402 is in a stretched state), and in the process of moving the iron block 401, the iron block 401 will pull the connecting rod 309 move, thereby pulling the plug 307 to slide along the outer side of the sliding groove 306, so that the plug 307 no longer blocks the flow hole 403, and the liquid fertilizer can flow into the first nozzle 104 from the first feed pipe 106, and the emulsifiable pesticide can be Can be flowed in the second spray nozzle 105 by the second feeding pipe 107; On the contrary, when need not make liquid fertilizer can be sprayed by the first spray nozzle 104 or emulsifiable pesticide can be sprayed by the second spray nozzle 105, make control on all The electromagnetic block 308 is powered off, and the electromagnetic block 308 after the power failure will lose its magnetic force. At this time, the elastic spring 402 in the stretched state will reset under the action of the rebound force, thereby pulling the iron block 401 to reset, thereby driving the plug 307 is reset, so that the plug 307 blocks the flow hole 403 again, so that the liquid fertilizer cannot pass through the first feed, and the emulsifiable pesticide cannot pass through the second feed pipe 107. In addition, when it is necessary to control the spraying amount of the first spray head 104 or the second spray head 105, it is only necessary to control the number of power on and off of the electromagnetic block 308. Specifically, preferably, the sliding groove 306 in the control mechanism 201 is set as Four groups, when only 1/2 of the spraying amount is needed, two of the magnetic blocks in the control mechanism 201 are energized and the other two magnetic blocks are de-energized, and the liquid fertilizer or emulsifiable pesticide can only be sprayed in the control mechanism 201. Wherein two flow holes 403 flow out, but cannot flow out by other two flow holes 403, like this, the first shower head 104 or the second shower head 105 just only have 1/2 spray amount. Similarly, when only a quarter of the spraying amount is required, one of the electromagnetic blocks 308 in the control mechanism 201 is powered on and the other three electromagnetic blocks 308 are powered off. In this way, the spraying volume of the first spray head 104 and the second spray head 105 can be adjusted through the control mechanism 201, and the overall structure of the control mechanism 201 is simple, easy to control, low in cost, and wider in use.

As shown in Figures 4 and 5, a first connecting block 404 is fitted in the first housing seat 304, and a first threaded hole 405 is opened on the first connecting block 404, and the second housing seat 305 A second connection block 406 is connected to the inner fit, and a second threaded hole 407 is opened on the second connection block 406 .

It should be noted that the control mechanism 201 can be connected to the first feed pipe and the second feed pipe through the first threaded connection hole 405 and the second threaded connection hole 407 , and the installation process is simple and easy to disassemble.

Another aspect of the present invention discloses a control method for a fertilizer preparation device for planting flue-cured tobacco, which is applied to any one of the fertilizer preparation devices for planting flue-cured tobacco, including the following steps:

Obtain the image information of the jet area through the optical camera;

extracting parameter information of the jet region based on the image information, wherein the parameter information includes contour information of the jet region;

Extracting the first coordinate value of the nearest node from the lateral jet area and the radial jet area to the jet stagnation point based on the parameter information;

extracting the second coordinate values of the nodes farthest from the jet stagnation point in the lateral jet region and the radial jet region based on the parameter information;

calculating a jet circulation coefficient based on the first coordinate value and the second coordinate value;

The spray volumes of the first spray head and the second spray head are adjusted in real time based on the jet circulation coefficient.

Further, in a preferred embodiment of the present invention, adjusting the spray volumes of the first nozzle and the second nozzle in real time based on the jet circulation coefficient, specifically includes the following steps:

If the jet circulation coefficient is greater than or equal to 1, then reduce the spray volume of the first nozzle and the second nozzle;

If the jet circulation coefficient is greater than 0 and less than 1, the spraying volumes of the first nozzle and the second nozzle are not adjusted;

If the jet circulation coefficient is less than or equal to 0, the spraying volume of the first spray head and the second spray head will be increased.

It should be noted that the jet circulation coefficient is a physical quantity used to characterize the vortex structure characteristics of the jet field, which can macroscopically characterize the distribution of the jet profile after the collision of emulsifiable pesticides and liquid fertilizers. Generally speaking, the jet profile tends to In the circle, it means that the uniformity of the contour distribution of the emulsifiable pesticide and the liquid fertilizer after the collision is better, that is, the better the mixing effect of the emulsifiable pesticide and the liquid fertilizer is, and the calculation formula of the jet circulation coefficient is as follows:

Among them, R _e represents the jet circulation coefficient; n represents the number of nodes on the jet area; i represents the i-th node on the jet area; T _n represents the coordinate value of the nearest node in the lateral jet area to the jet stagnation point; T _n+1 Represents the coordinate value of the node farthest from the lateral jet area to the jet stagnation point; P _n represents the coordinate value of the node closest to the jet stagnation point in the lateral jet area; P _n+1 represents the coordinate value of the node farthest from the lateral jet area to the jet stagnation point.

It should be noted that the distribution of the jet profile in the jet area can reflect the mixing degree of the emulsifiable pesticide and the liquid fertilizer. If the jet circulation index in the jet area is greater than or equal to 1 when the emulsifiable pesticide and the liquid fertilizer collide against each other, it means that the kinetic energy carried by the emulsifiable pesticide and the liquid fertilizer is too large when they collide against each other, After point hedging changes the direction, the flow velocity remains high in the transverse jet area and radial jet area, resulting in too short a time for the impact and friction of emulsifiable pesticides and liquid fertilizers, resulting in too short a mass transfer time, which will reduce the impact of emulsifiable pesticides and liquid fertilizers. At this time, the spraying volume of the first nozzle and the second nozzle needs to be increased through the control mechanism; if the jet circulation index of the jet area is less than or equal to 0 when the emulsifiable pesticide and the liquid fertilizer collide against each other, then it means The kinetic energy carried by the EC pesticide and the liquid fertilizer is too small when they collide against each other, which leads to a low degree of dispersion after the impact of the EC pesticide and the liquid fertilizer, and the distribution range of the jet area after the impact is too small, which will affect the EC pesticide and liquid fertilizer. Mixing efficiency, at this time, it is necessary to reduce the spraying volume of the first nozzle and the second nozzle through the control mechanism; and if the jet circulation coefficient is greater than 0 and less than 1, it means that the mixing effect and efficiency of emulsifiable pesticide and liquid fertilizer are better , there is no need to adjust the spray volume of the first nozzle and the second nozzle.

The above ideal embodiments according to the present invention are inspirations, and the descriptions thereof are more specific and detailed, but should not be construed as limiting the scope of the patent for the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A fertilizer preparation device for planting flue-cured tobacco, characterized in that: the preparation device includes a preparation box, a first storage tank and a second storage tank, and the left side wall of the preparation box is fixedly installed with a first A spray head, a second spray head is fixedly installed on the right side wall of the preparation box, and the first spray head and the second spray head are arranged coaxially; The first storage tank is used to store liquid fertilizers, the second storage tank is used to store emulsifiable concentrate pesticides, the bottom of the first storage tank is matched with one end of the first feeding pipe, and the second storage tank The other end of a feed pipe is connected with the first nozzle, the bottom of the second storage tank is connected with one end of the second feed pipe, and the other end of the second feed pipe is connected with the second feed pipe. The second nozzle is mated and connected; The first feed pipe is provided with a first pump, the second feed pipe is provided with a second pump, and both the first feed pipe and the second feed pipe are provided with control mechanism. 2. A fertilizer preparation device for planting flue-cured tobacco according to claim 1, characterized in that: at least one group of monitoring mechanisms are provided on the left and right side walls of the preparation box, and the monitoring mechanisms include installation A rotating motor is fixedly installed on the mounting frame, and the output end of the rotating motor is connected with a coupling, and the coupling is connected with a threaded screw, and the threaded screw is slidably connected with a sliding block, a fixed plate is fixedly connected to the sliding block, an optical camera is fixedly installed on the fixed plate, and an infrared sensor is arranged on the sliding block. 3. A fertilizer preparation device for planting flue-cured tobacco according to claim 2, characterized in that: a guide rail is also fixedly installed on the mounting frame, and a guide block is fixedly connected to the sliding block, and the guide block is embedded in the In the guide rail, the guide block can slide along the guide rail. 4. A fertilizer preparation device for planting flue-cured tobacco according to claim 1, characterized in that: the control mechanism includes a housing, a partition plate is arranged inside the housing, and one side of the partition board is provided with The first shell seat, the second shell seat is provided on the other side of the partition plate, the bottom of the first shell seat is provided with several sliding grooves along the circumference, and the plugs are slidably connected in the sliding grooves. 5 . The device for preparing fertilizers for planting flue-cured tobacco according to claim 4 , characterized in that: the inner wall of the casing is provided with several electromagnetic blocks along the circumferential direction. 6 . 6. A fertilizer preparation device for planting flue-cured tobacco according to claim 4, characterized in that: the plug is fixedly connected to one end of the connecting rod, and the other end of the connecting rod passes through the first shell seat The side wall of the first shell extends into the housing, and the other end of the connecting rod is fixedly connected to the iron block, the outer wall of the first housing seat is fixedly connected to one end of the elastic spring, and the other end of the elastic spring is connected to the The iron block is fixedly connected, and the connecting rod is sleeved in the elastic spring. 7. A fertilizer preparation device for flue-cured tobacco planting according to claim 4, characterized in that: the bottom of the sliding groove is provided with a flow hole, and the flow hole runs through the second shell seat bottom. 8 . The fertilizer preparation device for flue-cured tobacco planting according to claim 4 , wherein a first connecting block is matched and connected in the first shell seat, and a first connecting block is opened on the first connecting block. 9 . a screw connection hole, a second connection block is matched and connected in the second shell seat, and a second screw connection hole is opened on the second connection block. 9. A control method of a fertilizer preparation device for flue-cured tobacco planting, applied to the fertilizer preparation device for flue-cured tobacco planting according to any one of claims 1-8, characterized in that, comprising the following steps: Obtain the image information of the jet area through the optical camera; extracting parameter information of the jet region based on the image information, wherein the parameter information includes contour information of the jet region; Extracting the first coordinate value of the nearest node from the lateral jet area and the radial jet area to the jet stagnation point based on the parameter information; Extracting the second coordinate value of the node farthest from the jet stagnation point in the lateral jet area and the radial jet area based on the parameter information; calculating a jet circulation coefficient based on the first coordinate value and the second coordinate value; The spray volumes of the first spray head and the second spray head are adjusted in real time based on the jet circulation coefficient. 10. The control method of a fertilizer preparation device for flue-cured tobacco planting according to claim 9, characterized in that, based on the jet circulation coefficient, the spraying volume of the first nozzle and the second nozzle is adjusted in real time, specifically comprising the following step: If the jet circulation coefficient is greater than or equal to 1, then reduce the spray volume of the first nozzle and the second nozzle; If the jet circulation coefficient is greater than 0 and less than 1, the spraying amount of the first nozzle and the second nozzle is not adjusted; When the jet circulation coefficient is less than or equal to 0, the spraying amount of the first nozzle and the second nozzle is increased.

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