CN111220498A - Pesticide droplet retention performance detection system and detection method - Google Patents
Pesticide droplet retention performance detection system and detection method Download PDFInfo
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Abstract
本发明公开了一种农药雾滴持留性能检测系统及检测方法，属于农药性能测试技术领域；本发明的检测系统的检测单元包括检测箱体、称量器、折弯杆和雾滴持留件，称量器设置于检测箱体的底部，折弯杆的底端固定于称量器上，折弯杆的顶端向下悬挂有雾滴持留件，所述雾滴持留件设置于检测箱体内药液喷头的下方；还包括药液喷头、药液罐和空压机；本发明中空压机与药液罐可以提供稳定的药液喷雾，喷雾过程在检测箱体内进行，不会影响到称量器的称量，另外称量器上通过折弯杆在检测箱体上部对雾滴持留件进行悬挂可以消除雾滴持留件晃动的影响，使用本系统进行检测可以减少等待称量器示数稳定的时间，提高检测精度。
The invention discloses a pesticide droplet retention performance detection system and a detection method, belonging to the technical field of pesticide performance testing; the detection unit of the detection system of the invention comprises a detection box, a weighing device, a bending rod and a droplet retention member, The weighing device is arranged at the bottom of the detection box, the bottom end of the bending rod is fixed on the weighing device, and the top end of the bending rod is hung down with a droplet retaining piece, and the droplet retaining piece is arranged in the detection box. Below the liquid spray head; also includes the liquid medicine spray head, the liquid medicine tank and the air compressor; the hollow compressor and the liquid medicine tank of the present invention can provide stable spray of the liquid medicine, and the spraying process is carried out in the detection box without affecting the weighing. In addition, suspending the droplet retaining member on the upper part of the detection box through the bending rod on the weighing device can eliminate the influence of the shaking of the droplet retaining member. Using this system for detection can reduce the waiting for the weighing device to stabilize. time and improve detection accuracy.
Description
Technical Field
The invention relates to the technical field of pesticide performance testing, in particular to a pesticide droplet retention performance detection system and a detection method.
Background
The application of pesticides in modern agriculture is one of the most effective measures for preventing diseases, pests, grasses and rats, and 70 percent of the pesticides in China are used by spraying in the prevention and control of the diseases, pests, grasses and rats, and comprise ground spraying machines, manned plant protection airplanes and plant protection unmanned airplanes; the retention capacities of pesticide liquid with different physical and chemical properties on the surfaces of different plants are different; because the retention capacity of various plants to different pesticide liquid medicines is not clear, the pesticide liquid amount sprayed exceeds the maximum retention capacity of the surface of a target plant and is frequently lost, so that pesticide waste is caused on one hand, and the environment is polluted at the same time. Therefore, the detention capability of different pesticide liquid on the surface of the target plant needs to be known, so that a basis is provided for controlling the field liquid dosage or improving the detention capability of the liquid on the surface of the target plant by changing the physicochemical property of the liquid.
The conventional retention capacity detection mode is that plant leaves are directly immersed in liquid medicine, and the liquid medicine retention amount of the leaves in unit area in a static state is measured after weighing, but is different from the liquid medicine retention amount of the leaves in a dynamic state during spraying. The direct immersion of the leaves in the liquid medicine is a process of replacing the solid-liquid interface with the solid-gas interface, and the mist drops on the leaves during spraying and wets the solid-liquid interface, and the liquid-gas interface and the solid-gas interface are changed into the solid-liquid interface. Secondly, most of the chemical solutions used for spraying contain a surfactant, which has the property of adsorbing at the interface. During spraying, a large amount of fine fog drops are formed in the liquid medicine, a new liquid-air interface expands rapidly, surfactant molecules on the liquid-air interface are diluted greatly, the surface tension of the liquid medicine rises, time is needed for the surfactant molecules in the liquid medicine to transfer to the new liquid-air interface, and the fog drops fall onto the leaf surface is completed instantly, so that the retention of the liquid medicine on the leaf surface is influenced because the instantaneous surface tension of the fog drops contacting the leaf is too large to wet and spread, and the actual situation in the field can be reflected by measuring the retention of the liquid medicine on the leaf surface. If the leaves are directly immersed into the liquid medicine, the surfactant in the liquid medicine is easier to transfer to a new interface, and the leaves are easier to wet, so that the retention amount of the liquid medicine on the surfaces of the leaves is larger, and the retention capacity of the liquid medicine on the surfaces of target plants under field conditions cannot be correctly reflected. In addition, the requirement on the detection precision of the retention amount is high, the required range is usually within 0-2 g, the preferable detection interval is within 0-500 mg, the surface retention amounts of different liquid medicines at different surface free energies are greatly different, and in the fine comparison research, the surface performance of the same leaf can be damaged after the same leaf is washed and wiped due to the difference of plant leaves at different growth periods or growth positions, so that the requirement of the fine comparison research is hardly met by adopting natural plant leaves.
Through search, patent publication No. CN102116668A discloses a measuring device for measuring changes in retention of a spray chemical on the surface of plant leaves, comprising: glass cover, electronic balance, carry the leaf platform bracing piece, carry the leaf platform base, tubaeform sleeve pipe, electronic balance arranges inside the glass cover in, carry the leaf platform base and place on electronic balance, the aperture has been seted up at glass cover top, carry the leaf platform bracing piece and pass this aperture and insert and carry the leaf platform base and can support, it is fixed in the top of carrying the leaf platform bracing piece to carry the leaf platform, tubaeform pipe overlap is arranged glass cover upper surface and cover outside carrying the leaf platform bracing piece in, its inner wall and carry the loose cooperation of leaf platform bracing piece, the detection device disclosed in this patent, adopt glass cover and bracing piece loose complex mode, can't avoid the spraying liquid medicine to get into ten thousand minutes balance detection positions through loose cooperation position, lead to data error. The detection of the spray retention is carried out in an open environment, and the physical injury and instrument pollution of experimenters are inevitably caused. Although the scheme disclosed by the patent improves the accuracy of measuring the retention amount change of the spraying liquid medicine on the surface of the plant leaf to a certain extent, most of balances for detecting the retention amount of the liquid medicine on the leaf surface are ten-thousandth balances at present, the balances are high in precision and sensitive, small changes in the environment can influence monitoring data, accurate data cannot be measured by the balances, the spraying process is a very violent impact process for the ten-thousandth balances, and the plant leaf can shake violently after the spraying, so that the technical scheme disclosed by the patent is similar to that disclosed by the patent, the plant leaf and the ten-thousandth balances are directly weighed, the indication of the ten-thousandth balances can be directly influenced by the small motion of the plant leaf, a long time needs to be waited, the data can be recorded after the plant leaf is stabilized, and the test efficiency is greatly reduced, therefore, the technical problem of how to quickly obtain stable readings by a ten-thousandth balance after the plant leaves are sprayed is urgently needed to be solved. In addition, the plant leaves used in the technical scheme disclosed in the patent are not a plane, and the angle of the plant leaves is difficult to accurately control, so that the test is lack of scientificity. Therefore, a detection system capable of accurately and scientifically detecting the retention performance of pesticide droplets is needed in the prior art. Many negative phototaxis pests in crop diseases and insect pests are harmful on the back of leaves, and many bactericides are also required to be sprayed on the back of the leaves in actual production, so that the patent cannot realize the detection of the liquid medicine retention on the back of the simulated leaves.
Disclosure of Invention
1. Technical problem to be solved by the invention
Aiming at the technical problem that the pesticide droplet retention performance is difficult to accurately detect in the prior art, the pesticide droplet retention performance detection system and the pesticide droplet retention performance detection method are provided, the defects that pesticide liquid spray poisons experimenters and pollutes and corrodes instruments and equipment are effectively overcome, vibration can be effectively reduced by the detection unit, and the time for waiting for the scale to be stable is shortened.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the pesticide droplet retention performance detection system comprises a detection unit, wherein the detection unit comprises a detection box body, a weighing device, a bending rod and a droplet retention piece, the weighing device is arranged at the bottom of the detection box body, the weighing device is not in contact with the detection box body, the bottom end of the bending rod is fixed on the weighing device, the droplet retention piece is arranged at the top of the bending rod in a hanging manner, and the droplet retention piece is arranged in the detection box body; the device also comprises a liquid medicine spray head, a liquid medicine tank and an air compressor, wherein the liquid medicine spray head is arranged in the detection box body and is correspondingly arranged above the fog droplet retaining piece; the liquid medicine spray head is connected with a liquid outlet of the liquid medicine tank through a pipeline; an air compressor is arranged on the liquid medicine tank.
The detection unit can directly display and output the liquid medicine remaining quantity of the liquid medicine on the free energy test base materials with different surfaces through the signal obtained by the weighing device and the calculation according to a specific formula by a built-in electronic device. The formula is as follows: liquid medicine spray retention (mu L/cm)2) Liquid density/test substrate area (post-spray-pre-spray).
Preferably, the bottom end of the bending rod is fixed on the weighing device, the bottom end of the bending rod extends upwards to the upper part of the detection box body along the side edge of the detection box body, and the top end of the bending rod is correspondingly arranged above the detection box body; the bending rod comprises a fixing part, a bending side part and a top end hanging part, the fixing part is fixedly arranged on the weighing device, the top end hanging part is correspondingly arranged above the detection box body and used for hanging the fog drop holding piece, and the side part fixing part and the top end hanging part of the detection box body are connected through the bending side part.
Preferably, the top end of the bending rod can be further provided with a shock absorption mechanism, the shock absorption mechanism comprises a central ball, a shell and an elastic piece, the shell is fixed at the top end of the bending rod, the central ball is arranged inside the shell, and the central ball is connected to the center of the shell through the elastic piece; so as to better eliminate the vibration of the spray impact and reduce the time for waiting for the scale to be stable.
Preferably, a through hole is formed in a top plate of the detection box body, a hanging piece penetrating through the through hole is downwardly arranged at the top end of the bending rod, and a fog drop holding piece is hung at one end, far away from the bending rod, of the hanging piece.
Preferably, an outer box body is arranged outside the detection box body, a bottom cavity is formed between an outer box bottom plate of the outer box body and a detection box bottom plate of the detection box body, and the weighing device is arranged in the bottom cavity; a side cavity is formed between the outer box side plate of the outer box body and the detection box side plate of the detection box body, and the bending rod extends from bottom to top along the side edge of the detection box body in the side cavity; a top cavity is formed between the outer box top plate of the outer box body and the detection box top plate of the detection box body, and the top end of the bending rod is arranged in the top cavity.
Preferably, the bottom of the detection box body is fixed on the outer box body through an electric auxiliary heating device, and a semiconductor refrigerating sheet is arranged on a top hole cover.
Preferably, the detection box body can be very convenient take out and put into from outer box body, and the detection box body adopts integrative design, the preparation of preferred corrosion-resistant easy abluent glass material except that the top utensil handhole door.
Preferably, the detection unit can directly display and output the signals acquired by the weighing device as the liquid medicine retention amount of the liquid medicine on different surface free energy test substrates by a built-in electronic device and according to a specific formula.
Preferably, the nozzle is arranged 30-50 cm above the retaining piece, the height is adjustable, the spraying atomization is not good when the nozzle is lower than 30cm, and the fog drop deposition is not sufficient when the nozzle is higher than 50 cm. In addition, the height interval is also the spray height commonly used in real spray scenes. (the ground spraying nozzle is generally 50-75 cm away from the top of the crop, while the spraying nozzle of the plant protection unmanned aerial vehicle is generally 150-200 cm away from the top of the crop, and can be controlled to be about 75cm under special conditions).
Preferably, the nozzle is mounted in a replaceable manner, and conforms to the GB-T18676-2002 standard nozzle model.
Preferably, the air compressor is connected with the liquid medicine tank through a pressure reducing valve. The pressure reducing valve can accurately set a fixed liquid spraying pressure value, and the constant spraying pressure is ensured.
Preferably, a pressure gauge is arranged on the liquid medicine tank. The pressure values can be read visually and synchronously recorded to the corresponding database position in the detection record.
Preferably, a top plate of the detection box body is provided with a cooling plate, and a bottom plate of the detection box body is provided with a heating plate.
The fog drop retention piece used by the pesticide fog drop retention performance detection system comprises 2 suspension rods, support plates, retention pieces and rotating shafts, wherein the 2 support plates are arranged on two sides of the rotating shafts in a relatively rotatable manner, so that the test area is increased, the inclination angles of blades of various plant-type crops are simulated more reasonably, and the rotating shafts are used for measuring the angles between the support plates and the vertical surfaces; the horizontal position is 0 degree, and the angle adjusting range is-90 to 90 degrees. The retention sheet is arranged on the upper surface of the support plate.
Preferably, the retaining member is mounted on the upper portion of the bent rod in a spiral fastening or inserting manner, and can be detached and then rotated 180 degrees to fix the rotating shaft and the bent rod. The fixing mode of the rotating shaft and the bent rod is a screwing mode or an inserting mode, and the fixing mode is a hard connection mode.
Preferably, the retaining piece is detachably provided to the upper surface of the support plate.
Preferably, the length of the edge of the single sheet of the retention sheet is 5 x 10cm, and the area of the retention sheet is selected to be 50cm2。
Preferably, the materials selected by the retention sheet are divided into three categories, namely hydrophobic base materials with surface free energy of 20-25 mN/m, and the hydrophobic base materials are used for simulating and researching the retention performance of the liquid medicine related to the hydrophobic target crops such as cabbage, orange and the like. And secondly, an intermediate performance substrate with the surface free energy of 30-40 mN/m is used for simulating the retention performance of liquid medicine related to semi-hydrophobic target crops such as rice, wheat and the like. And finally, the hydrophilic base material with the surface free energy of 50-70 mN/m is used for simulating the retention performance of liquid medicine related to hydrophilic target crops such as cotton, cucumber and the like.
Preferably, a lifting piece is arranged below the rotating shaft, the lifting piece is connected with the lower surface of the supporting plate through an adjusting rod, the bottom end of the adjusting rod is hinged with the lifting piece, and the top end of the adjusting rod is hinged with the lower surface of the supporting plate.
The detection method of the pesticide droplet retention performance detection system comprises the steps of storing a liquid to be detected into a liquid medicine tank, spraying the liquid to be detected onto a suspended droplet retention member from a liquid medicine spray head by using an air compressor, waiting until the reading of a weighing device is stable after the liquid spraying is finished, and recording the retention amount of the liquid to be detected.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the pesticide droplet retention performance detection system comprises a detection unit, wherein the detection unit comprises a detection box body, a weighing device, a bending rod and a droplet retention piece, the weighing device is arranged at the bottom of the detection box body, the weighing device is not in contact with the detection box body, the bottom end of the bending rod is fixed on the weighing device, the droplet retention piece is arranged at the top of the bending rod in a hanging manner, and the droplet retention piece is arranged in the detection box body; the device also comprises a liquid medicine spray head, a liquid medicine tank and an air compressor, wherein the liquid medicine spray head is arranged in the detection box body and is correspondingly arranged above the fog droplet retaining piece; the liquid medicine spray head is connected with a liquid outlet of the liquid medicine tank through a pipeline; an air compressor is arranged on the liquid medicine tank; air compressor machine and liquid medicine jar can provide stable liquid medicine spraying, the spraying process is gone on in the detection box, can not influence weighing of weigher, in addition hang fog drop retention spare on the detection box upper portion through the pole of bending on the weigher, the heavy object of the elasticity flexible coupling at the pole top of bending can play the shock-absorbing effect, can slightly rock the influence elimination of weigher weighing process with fog drop retention spare, the time that the registration of the awaiting weighing ware that significantly reduces is stable, improve and detect the precision.
The pesticide fog droplet retention performance detection system is used for detecting the retention amount, so that the time for waiting for the scale to stably indicate is shortened, and the detection precision is improved.
(2) The fog droplet retention piece used by the pesticide fog droplet retention performance detection system comprises a retention piece, a support plate and a rotating shaft, angle scales are etched on the longitudinal section of the rotating shaft, and the angle of the support plate can be read out through the position of a lifting knob. The number of the supporting plates is 2, the 2 supporting plates can be arranged on two sides of the rotating shaft in a relatively rotating mode, the large testable area can effectively guarantee that the degree detection interval of the instrument is large enough, and the detection precision can be improved;
the retention sheet adopts industrial base materials, target blades with different surface free energies can be simulated according to different types, the surface free energies of the blades are different due to different growth periods or different growing positions of crops, or the structural form of the surface of the same blade to be tested can be damaged by repeatedly washing and wiping the same blade to be tested, so that the surface free energy of the blade to be tested is changed, and detection data errors caused by inconsistency of the blades to be tested can be avoided by adopting the industrial base materials. Can meet the detection requirement of refining comparison on the difference of the retention performance of the liquid medicine.
In order to realize the detection of the spray retention amount of the leaf back, the supporting plate of the retention piece can rotate 180 degrees and is suspended at the top of the bending rod, and under the condition, the corresponding liquid medicine spray head can be adjusted and is arranged in the detection box body and correspondingly arranged below the fog droplet retention piece; the spraying retention on the back of the blade can be detected by simulation, and the simulation test requirement of an application scene aiming at negative phototaxis pest damage or disease control is made up.
(3) The liquid spraying amount and the liquid spraying angle of the detection system are ensured to be consistent through reasonable arrangement of the liquid medicine tank and the air compressor in the system, and the detection accuracy is ensured; furthermore, the use of the fog drop holding piece improves the accuracy and the adjusting range of angle adjustment, and can truly simulate the inclination angles of blades of various plant types. Through the reverse installation of the retention piece, the cooperation shower nozzle is from bottom to top spraying, can simulate the liquid medicine retention of survey blade back. Different surface tension base materials which can be conveniently replaced are used as test pieces, targets with different surface free energy can be simulated, the measurement precision and the test efficiency of the instrument are improved, and the test scientificity is further ensured.
(4) The design of the detection box body and the outer box body can effectively avoid the toxicity damage of pesticide spray test experiments to test personnel and the pollution to the environment, and avoid the pollution and corrosion of instruments.
Drawings
FIG. 1 is a schematic structural diagram of a pesticide droplet retention performance detection system according to the present invention;
FIG. 2 is a perspective view of a detection unit in the pesticide droplet retention performance detection system of the present invention;
FIG. 3 is a side sectional view of a detection unit in the pesticide droplet retention performance detection system of the present invention;
FIG. 4 is a perspective view of a droplet retention member for use in a pesticide droplet retention performance detection system of the present invention;
FIG. 5 is a schematic structural diagram of an inclined state of a retention plate of a droplet retention member used in the pesticide droplet retention performance detection system according to the present invention;
FIG. 6 is a schematic structural view of a horizontal state of a retention plate of a droplet retention member used in the pesticide droplet retention performance detection system of the present invention;
FIG. 7 is a partial enlarged view of an angle adjustment unit of a droplet retention member used in the pesticide droplet retention performance detection system of the present invention;
fig. 8 is a schematic view of a retention plate of a droplet retention member used in a pesticide droplet retention performance detection system according to the present invention, the retention plate being mounted on a support plate by a hook and loop fastener;
FIG. 9 is a schematic view of a mist retaining member with a retaining plate mounted on a support plate by snap fasteners, the mist retaining member being used in a pesticide mist retention performance testing system according to the present invention;
FIG. 10 is a schematic view of the installation of a shock-absorbing mechanism structure used in the pesticide droplet retention performance detection system of the present invention
Fig. 11 is a schematic structural view of an inclined state of a holding plate of a droplet holding member used in the pesticide droplet holding performance detection system according to the present invention;
FIG. 12 is a schematic diagram showing the scale distribution of a droplet retention member used in a pesticide droplet retention performance detection system according to the present invention;
FIG. 13 is a statistical chart of the data reproducibility of liquid holdup of different test substrates;
FIG. 14 is a statistical chart of the effect of different structural aids on the retention of drug solutions;
FIG. 15 is a statistical chart of the effect of different concentration gradient additives E on the retention amount of a liquid medicine (top-spraying mode);
FIG. 16 is a statistical chart showing the effect of different concentration gradient adjuvants E on the retention amount of a drug solution (bottom-spray method).
The reference numerals in the schematic drawings illustrate:
100. a detection unit; 101. a bottom chamber; 102. a side chamber; 103. a top chamber;
110. detecting the box body; 111. detecting a box top plate; 112. detecting a box side plate; 113. a bottom plate of the detection box; 114. a through hole; 115. a liquid discharge tank; 116. a cooling plate; 117. heating plates;
120. an outer case; 121. an outer box top plate; 122. an outer case side plate; 123. an outer box bottom plate;
210. a scale; 211. a barrier; 220. bending the rod; 221. a fixed part; 2221. a first bending portion; 2222. a second bending portion; 223. a weight; 224. bending the side part; 225. a top end suspension portion; 226. a shock absorbing mechanism; 227. a center ball; 228. a housing; 229. an elastic member;
300. a droplet retainer; 301. a suspension member; 302. a rotating shaft; 303. calibration; 311. a retention sheet; 312. a support plate; 313. a first mounting member; 314. a second mount; 321. a guide bar; 322. a lifting knob; 323. a lifting member; 324. a first hinge member; 325. adjusting a rod; 326. a second hinge member;
400. a liquid medicine spray head; 500. a liquid medicine tank; 510. a pressure gauge; 600. a pressure reducing valve; 700. an air compressor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; moreover, the embodiments are not relatively independent, and can be combined with each other according to needs, so that a better effect is achieved. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The detailed description and exemplary embodiments of the invention will be better understood when read in conjunction with the appended drawings, where the elements and features of the invention are identified by reference numerals.
Example 1
The utility model provides a pesticide droplet retention performance detecting system, as shown in fig. 1, detecting element 100 includes detection box 110, weighing apparatus 210, bending rod 220 and droplet retention piece 300, weighing apparatus 210 is the ten-thousandth scale, weighing apparatus 210 sets up in the bottom of detecting box 110 and weighing apparatus 210 and detection box 110 contactless, the bottom mounting of bending rod 220 is on weighing apparatus 210, the top of bending rod 220 hangs and sets up droplet retention piece 300, droplet retention piece 300 sets up in detecting box 110.
The device also comprises a liquid medicine spray head 400, a liquid medicine tank 500 and an air compressor 700, wherein the liquid medicine spray head 400 is arranged in the detection box body 110 and is correspondingly arranged above the fog droplet retaining piece 300, and the liquid medicine spray head 400 is a universal spray head and can correspondingly adjust the spraying direction; the liquid medicine nozzle 400 is connected with the liquid outlet of the liquid medicine tank 500 through a pipeline; an air compressor 700 is arranged on the liquid medicine tank 500. The air compressor 700 is connected with the liquid medicine tank 500 through the pressure reducing valve 600, and the pressure reducing valve 600 enables the liquid medicine tank 500 to keep stable pressure, so that subsequent spraying is facilitated. The liquid medicine tank 500 is provided with a pressure gauge 510, so that an operator can conveniently know the pressure in the liquid medicine tank and control the pressure through the pressure reducing valve 600.
As shown in fig. 2 to 3, specifically, the detection unit 100 includes a detection box 110, a scale 210 and a bending rod 220, the scale 210 is disposed at the bottom of the detection box 110, the scale 210 is not in contact with the detection box 110, the bottom end of the bending rod 220 is fixed on the scale 210, the bottom end of the bending rod 220 extends upward to the upper side of the detection box 110 along the side edge of the detection box 110, and the top end of the bending rod 220 is correspondingly disposed above the detection box 110; a through hole 114 is formed in the top plate 111 of the detection box 110, a hanging member 301 passing through the through hole 114 is downwardly disposed at the top end of the bending rod 220, a mist retaining member 300 is hung at one end of the hanging member 301 away from the bending rod 220, and the mist retaining member 300 is disposed below the chemical solution spray head 400 in the detection box 110. The hanging member 301 is linear or rod-shaped, and the mist retaining member 300 is hung.
In the process of detecting the pesticide liquid droplet retention amount, the liquid medicine nozzle 400 is needed to be used for detecting the liquid medicine to be detectedSpraying the fog drops on the fog drop retention piece 300 in a state of fog drops, stopping spraying after spraying for a preset time, weighing the fog drop retention piece 300 with the medicine liquid fog drops distributed on the surface by using a weighing device 210, wherein the mass increased by the fog drop retention piece 300 at the weighing position is the medicine liquid amount retained on the surface of the fog drop retention piece 300, and the area of the retention detection piece 300 is determined, so that the liquid retention amount of the medicine can be directly output through a built-in electronic device, and the unit of the medicine liquid retention amount is mu L/cm for recording and retaining effective figures conveniently2Before detection, the surface free energy of the used base material, the density of the liquid medicine to be detected and the like are required to be input according to system prompt, and the system automatically reads in data such as temperature and humidity, spraying pressure, liquid spraying amount and the like of the test bin. During the spraying detection process, the reading of the instrument is continuously increased along with the spraying, and after the maximum value of the instrument appears, the reading is reduced and tends to be stable along with the excessive accumulation and the low drop of the liquid medicine. The maximum value of the instrument is the retention of the liquid medicine at the loss point, and the stabilized value is the stable retention of the liquid medicine. As is well known, scale 210 is highly accurate on one hand and sensitive on the other hand, if the object on scale 210 moves slightly, the acceleration of the object itself will affect the scale 210.
When detecting the amount of the pesticide mist, the hanging member 301 for hanging the mist holder 300 is rod-shaped or wire-shaped, and is hard-connected to the top of the bent rod, and preferably, a highly hydrophobic polytetrafluoroethylene material is surface-treated. On the one hand, the inaccuracy of final retention data caused by the attachment of fog drops on the hanging piece 301 can be avoided, and on the other hand, the fog drop retaining piece 300 is fixed at the top of the bending rod, so that the non-uniformity of the movement track of the retaining piece 300 in the spraying process at every time is avoided, but the spraying liquid flow has dynamic potential energy, the shaking of the retaining piece 300 is inevitably caused, and the time required for the reading to reach stability is prolonged. And this process is artificially difficult to suppress. If the droplet holder 300 is directly connected with the ten-thousandth scale 210, the acceleration generated by the movement of the droplet holder 300 can cause the fluctuation of the scale of the ten-thousandth scale 210, and if the problem is not solved, the experimental data detection efficiency and accuracy can be greatly influenced; and it is artificially difficult to restrain the movement of the mist retaining member 300.
In order to solve the above technical problem, the applicant adopts the technical solution of the present embodiment, wherein the weighing device 210 is disposed at the bottom of the detection box 110, and is connected to the upper suspension mist-retaining member 300 of the detection box 110 through the bending rod 220 for measurement. When examining pesticide liquid medicine fog drop holding capacity, hang through bending pole 220 to fog drop holding 300 on the one hand and weigh, fog drop holding 300 that on the other hand hung takes place to rock, but because the setting of bending pole 220, fog drop holding 300 rocks and subducts gradually at the in-process by the transmission of bending pole 220, make this rock the weighing result that can not direct influence weighing apparatus 210, thereby reduce the time of waiting for weighing apparatus 210 registration stability greatly, improve and detect the precision.
More specifically, bending rod 220 includes a fixing portion 221, a bending side portion 224 and a top end hanging portion 225, wherein fixing portion 221 is fixedly arranged on scale 210, and fixing portion 221 can be fixed on scale 210 by glue and/or screws; the top end hanging portion 225 is provided above the detection chamber 110 to hang the mist retaining member 300, and is connected to the side fixing portion 221 of the detection chamber 110 and the top end hanging portion 225 by a bent side portion 224.
Wherein the bent side portion 224 is parallel to the vertical direction, and the fixing portion 221 and the top end hanging portion 225 are both parallel to the horizontal direction; the fixed portion 221 is connected to the bent side portion 224 through a first bent portion 2221, and the top end hanging portion 225 is connected to the bent side portion 224 through a second bent portion 2222; the first bending portion 2221 and the second bending portion 2222 are both arc-shaped, the radius of the circle where the first bending portion 2221 is located is R1, and the radius of the circle where the second bending portion 2222 is located is R2, wherein R1 is less than R2; the bending bar 220 can enhance the damping effect of the vibration caused by the shaking of the mist retaining member 300 by controlling the shape.
It should be noted that the top end of the bending rod 220 is provided with a weight 223, the density of the weight 223 is greater than that of the other parts of the bending rod 220, and the bottom surface of the weight 223 is provided with a hanging piece 301; the weight 223 may be disposed on the top end suspension portion 225, or may be considered as a part of the top end suspension portion 225; through the arrangement of the weight 223, when the fog drop holding piece 300 hung on the hanging piece 301 shakes, the weight 223 has larger inertia and tends to be in a static state, so that the hanging fog drop holding piece 300 is difficult to shake the weight 223, and the weighing stability of the weighing device 210 is further effectively ensured. And the length of the weight 223 is L, the distance from the connection part between the hanger 301 and the weight 223 to the side of the weight 223 close to the bending rod 220 is L, wherein k is more than or equal to 0.20 and less than or equal to 0.45, and k can be 0.20, 0.25, 0.30, 0.40 or 0.45, and the stability of the weight 223 can be further improved by arranging the connection part on the weight 223 close to the bending rod 220, so that the suspended mist drip holding member 300 is more difficult to shake the weight 223. The distance from the gravity center of the weight 223 to the bending rod 220 can be larger than the distance from the weighing device 210 to the bending rod 220, so that the overall stability of the bending rod 220 is facilitated, and the bending rod 220 is further prevented from shaking.
In addition, as shown in fig. 10, a shock absorbing mechanism 226 may be further disposed at the top end of the bending rod 220 in this embodiment, the shock absorbing mechanism 226 includes a plurality of central balls 227, a housing 228 and elastic members 229, the housing 228 is fixed at the top end of the bending rod 220, the central balls 227 are disposed inside the housing 228, the central balls 227 are connected to the center of the housing 228 through the elastic members 229, the elastic members 229 are a plurality of springs in this embodiment, the number of the springs is 6, the number of the springs is uniformly distributed on the surface of the central balls 227, and 6 of the springs face the central balls 227 or 8 springs are fixed at 8 vertices of the housing 228; the data fluctuation effect caused by the spray impact is further eliminated through the arrangement of the shock absorption mechanism 226.
In addition, in order to further avoid the influence of the external environment on the weighing process of the weighing device 210, the outer part of the detection box body 110 is provided with the outer box body 120, the front surface of the outer box body 120 is open, the integrally designed detection box body 110 is arranged in the detection box body 110, a bottom cavity 101 is formed between the outer box bottom plate 123 of the outer box body 120 and the detection box bottom plate 113 of the detection box body 110, the detection box body 110 can be fixedly arranged in the middle of the outer box body 120, so that the bottom cavity 101 is formed between the outer box bottom plate 123 of the outer box body 120 and the detection box bottom plate 113 of the detection box body 110, and the weighing device 210 is arranged; a side cavity 102 is formed between the outer box side plate 122 of the outer box body 120 and the detection box side plate 112 of the detection box body 110, and the bending rod 220 extends from bottom to top along the side edge of the detection box body 110 in the side cavity 102; a top chamber 103 is formed between the outer box top plate 121 of the outer box 120 and the detection box top plate 111 of the detection box 110, and the top end of the bending rod 220 is disposed in the top chamber 103.
A barrier 211 is arranged between the weighing device 210 and the outer box bottom plate 123 of the outer box body 120; the blocking member 211 is an object capable of blocking vibration, such as foam or hard sponge, and the blocking member 211 can effectively avoid the influence caused by the weighing indication of the vibration symmetry gauge 210 of the outer box 120 and/or the detection box 110.
The bottom of the detection box side plate 112 on the side of the detection box body 110 far away from the bending rod 220 is provided with a liquid discharge groove 115 for discharging the liquid at the bottom of the detection box body 110 to the outside of the detection box body 110.
In addition, a top plate of the detection box body 110 is provided with a cooling plate 116, and the cooling plate 116 may be a semiconductor refrigeration plate; a heating plate 117 is arranged on the bottom plate of the detection box body 110, and the heating plate 117 can be an electric auxiliary heating plate. This set up the hot plate and make bottom air temperature higher, the cooling plate makes top air temperature lower, and the higher air of temperature has the trend of upward movement, and the lower air of temperature has the trend of downward movement to it is even to be favorable to realizing the air circulation of flowing automatically, makes wholly similar to actual air cycle state, improves the simulation effect to real environment.
According to the detection method of the pesticide droplet retention performance detection system, the liquid to be detected is stored in the liquid medicine tank 500, the liquid to be detected is sprayed onto the suspended pesticide droplet retention piece 300 from the liquid medicine spray head 400 through the air compressor 700, after the liquid spraying is finished, the reading of the weighing device 210 is stable, and the retention amount of the liquid to be detected is recorded.
Another pesticide liquid retention piece for detecting the droplet retention amount, as shown in fig. 4, includes retention sheet 311, support plate 312 and pivot 302, support plate 312 is 2, and 2 support plates 312 can set up in pivot 302 both sides relatively rotatoryly, and 2 support plates 312 can rotate along pivot 302 promptly, pivot 302 can be fixed motionless, and one side of support plate 312 near pivot 302 is provided with the axle sleeve cover and establishes on pivot 302, and then realizes that support plate 312 rotates around pivot 302.
In addition, a lifting member 323 is arranged below the rotating shaft 302, the lifting member 323 is connected with the lower surface of the supporting plate 312 through an adjusting rod 325, the bottom end of the adjusting rod 325 is hinged with the lifting member 323 through a first hinge 324, and the top end of the adjusting rod 325 is hinged with the lower surface of the supporting plate 312 through a second hinge 326; the change of the opening and closing angle of the retaining sheet 311 can be realized by the lifting of the lifting piece 323, so that the adjusting process is more convenient and easier to control.
As shown in fig. 5 to 7 and fig. 11, it should be noted that in the present embodiment, a guide rod 321 is disposed to extend downward from the rotating shaft 302, an axial direction of the guide rod 321 is parallel to a vertical direction, and the lifting element 323 is sleeved on the guide rod 321; because of the arrangement of the guide rod 321, the lifting member 323 can be used as a lifting path along the axial direction of the guide rod 321, on one hand, the stability of the support plate 312 in the rotating process is improved, on the other hand, the adjustment of the rotating angle of the support plate 312 is more convenient, and the rotating angle of the support plate is adjusted within the range of-90 degrees to 90 degrees.
In addition, the guide rod 321 may be a screw, a lifting knob 322 is disposed below the lifting member 323, the lifting member 323 is sleeved on the screw in a manner of not contacting with the guide rod 321, and an upper end surface of the lifting knob 322 is in contact with a lower end surface of the lifting member 323; a screw hole matched with the screw rod is formed in the lifting knob 322, and the lifting knob 322 rotates to move axially along the guide rod 321.
The lifting knob 322 can move upwards under the drive of the screw thread by rotating the lifting knob 322, and the lifting knob 322 pushes the lifting piece 323 to move upwards due to the interference of the upper end surface of the lifting knob 322 and the lower end surface of the lifting piece 323, and then the lifting piece 323 pushes the support plate 312 to rotate upwards under the action of the adjusting rod 325; if the lifting knob 322 is rotated in the opposite direction, the lifting knob 322 moves downward, and the lifting member 323 is moved downward, and the lifting member 323 pulls the support plate 312 to rotate downward through the adjustment rod 325, thereby adjusting the angle of the support plate 312. This kind of regulative mode further improves the convenience of backup pad 312 angle modulation, in addition, owing to be rotation regulation, has also improved the regulation precision in addition, can effectively avoid backup pad 312 oneself to rotate downwards because of gravity or other drive power simultaneously.
In addition, as shown in fig. 12, the guide rod 321 is provided with a scale 303, the guide rod 321 is in a screw shape and is provided with a longitudinal cutting plane, an angle value is etched on the longitudinal cutting plane, the rotation degree can be directly known from the screw scale through the support plate angle adjusted by the rotation of the lifting member, the angle change between the support plate 312 and the vertical surface can be seen in the rotation process of the support plate 312, and the accurate control of the angle of the support plate 312 can be realized.
The retaining sheet 311 is used to retain the sprayed pesticide mist droplets, and the retaining sheet 311 may be a sheet or a flexible cloth. The retaining piece 311 is arranged on the upper surface of the supporting plate 312, the supporting plate 312 supports the retaining piece 311, the angle of the supporting plate 312 is adjusted in the above manner, and accurate control of the angle between the retaining piece 311 and the vertical surface is also achieved. It should be noted that, the distance from one side of the retention sheet far away from the rotating shaft to the rotating shaft is greater than the distance from one side of the support plate far away from the rotating shaft to the rotating shaft, so that the fog drops can be ensured to be retained on the retention sheet as much as possible, and errors caused by the fact that the fog drops fall on the support plate are avoided.
As shown in fig. 8 to 9, the retaining sheet 311 is detachably disposed on the upper surface of the supporting plate 312, and the lower bottom surface of the retaining sheet 311 may be detachably mounted on the upper surface of the supporting plate 312 through a snap fastener and/or a hook and loop fastener; the upper surface of the supporting plate 312 is provided with a first mounting part 313, the lower bottom surface of the retention sheet 311 is provided with a second mounting part 314, and the first mounting part 313 and the second mounting part 314 can be correspondingly arranged in a matching manner, in this embodiment, the first mounting part 313 is a hair surface of a magic tape, and the second mounting part 314 is a hook surface of the magic tape, but the positions of the hair surface and the hook surface can be exchanged, as long as the separable matching between the retention sheet 311 and the supporting plate 312 is realized through the matching of the hair surface and the hook surface; or the first mounting member 313 is a female snap of a snap fastener and the second mounting member 314 is a male snap of a snap fastener, and the separable engagement between the retaining piece 311 and the support plate 312 is realized by the engagement of the snap fasteners. The holding piece 311 and the supporting plate 312 are convenient to detach and mount in the above mode.
After one group of tests are finished, the new retention sheet 311 can be directly replaced to carry out the next group of tests, so that the replacement of the retention sheet 311 in the test process is facilitated, and the test efficiency is greatly improved. In addition, the upper surface of the retaining sheet 311 is provided with a hydrophilic layer and/or a hydrophobic layer which can be replaced in different test sets so as to meet the simulation of different blades.
In addition, a hanging member 301 is extended upward from the rotating shaft 302 for hanging the whole retention device.
Using the above apparatus, a 3000-fold dilution was prepared from the siloxane compound A, and the maximum stable liquid holdup was measured in comparison with pure water, and an industrial substrate having a measured surface free energy of 36.5mN/m was selected as the test substrate. And (3) continuously spraying for 30s by adopting a 0.2-0.4 mPa pressure spraying piece type atomizing nozzle under the conditions of the temperature of 30 ℃ and the humidity of 50%, and recording two groups of data stabilization time and maximum stable liquid holdup, wherein the actually measured data are shown in the table 1.
Comparative example 1
This comparative example was conducted by using the apparatus disclosed in patent publication No. CN102116668A and a comparative test with the apparatus of example 1, using the same silicone compound A to prepare a 3000-fold dilution and pure water, and examining two sets of data stabilization time and maximum stable liquid holdup under the same conditions, and the measured data are shown in Table 1.
TABLE 1 Detector Stable holdup data reproducibility study
The test results show that the data stabilization time of the system is longer under different spray pressures by the device described in the patent publication, and the data stabilization time is multiplied along with the increase of the spray pressure, while the data stabilization time required by the device described in the patent under different spray pressures is shorter and the difference along with the increase of the spray pressure is not large. From the measured values, the maximum stable retention data measured by the device described in the patent publication under different spray pressures have large differences, and there is no obvious rule corresponding to the increase of the spray pressure, that is, the test result of the device on the maximum stable retention is affected by the change factor of the spray pressure, and the data fluctuation is large. The detection values of the device disclosed by the patent are small in difference under different spraying pressures, so that the device can accurately measure the maximum stable retention data of the liquid medicine under different spraying pressures.
Test 1
Using the apparatus of example 1, spray retention test was performed on each of the leaves of rice at the booting stage and the industrial substrate whose surface free energy had been measured and calibrated, and data of the maximum stable liquid holdup of the liquid chemical on the surface of each substrate was determined. And preparing 3000 times of diluent by adopting siloxane compound A for the liquid medicine to be detected, and respectively carrying out comparison detection on the stable liquid holdup with pure water. The surface free energy of the rice leaf is 36.2 to 39.0mN/m by continuously spraying for 30s by using a spraying sheet type atomizing nozzle under the conditions of the temperature of 30 ℃ and the humidity of 50 percent and the surface free energy of the base material is actually measured to be 36.5mN/m by using a holding sheet base material with a medium surface free energy interval, and the measured data are shown in Table 2 and FIG. 13.
TABLE 2 data reproducibility examination of the test drug solution retention of plant materials and Industrial substrates
From the actual detection result, the rice leaf test is adopted, the data fluctuation of a single test is large, and the test value can be reflected to a certain extent only by taking an average value after repeated times in order to obtain accurate data. And by adopting the group of industrial base materials, the data fluctuation of multiple measurements is small, and the device has the function of rapid measurement.
Using the apparatus of example 1, 250g/L azoxystrobin SC (amitraz, formerly) was diluted 1000 times, different molecular-modified siloxane compounds A to F were added in a tank mix, 3000 times of the solution was diluted, a sheet-spray type atomizing head was used to continuously spray for 30 seconds at 30 ℃ and 50% humidity under a pressure of 0.3mPa, a sheet-retaining substrate with a medium surface free energy interval was used, the measured value of the surface free energy of the substrate was 36.5mN/m, and the measured data are shown in Table 3 and FIG. 14.
TABLE 3 influence of different structural assistants on the 250g/L pyraclostrobin SC diluent retention
The device can accurately reflect the difference of retention capacity of similar compounds with different modified structures, has extremely high detection precision, and can meet the test requirement of surface active structure screening.
Test 3
Compound E, which exhibited excellent retention, was obtained by screening, and further, by tank mixing with the preparation, the difference between the maximum run-off point liquid hold-up and the stable liquid hold-up was determined in the top-spray mode and the bottom-spray mode. Selecting 5% lufenuron EC (Mianzhi, Mianda), diluting 1000 times, adding compound E with different dilution times in a tank mixing manner, adopting 0.3mPa pressure under the conditions of 30 ℃ and 50% humidity, spraying a sheet type atomizing nozzle, continuously spraying for 60s, adopting a holding sheet base material with a low surface free energy interval, wherein the actual measurement value of the surface free energy of the base material is 27.5mN/m, and the measured data table 4 is shown in figures 15 and 16.
Table 4 effect of different concentration gradients of compound E on the retention of 5% lufenuron EC dilution
The above tests show that the effects of the auxiliary agent on the liquid medicine retention can be accurately measured by adopting both the top spraying mode and the bottom spraying mode. And the data have obvious rules, and the recommended dilution concentration of the compound E for improving the maximum retention of the 5% lufenuron EC is 1500-2000 times.
The siloxane compounds a to F used in the above examples and experimental tests are quaternary ammonium salt hydroxyl modified silicone oil, polyether modified silicone oil, epoxy light modified silicone oil, methyl esterified vegetable oil complex, polyethylene polyamine alkoxy compound, and polyhydroxy polyether modified compound, respectively.
The invention has been described in detail hereinabove with reference to specific exemplary embodiments thereof. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined in the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to be illustrative of the state of the art as developed and the meaning of the present technology and is not intended to limit the scope of the invention or the application and field of application of the invention.
Claims (10)
1. A pesticide droplet retention performance detection system is characterized by comprising
The detection device comprises a detection unit (100), wherein the detection unit (100) comprises a detection box body (110), a weighing device (210), a bending rod (220) and a fog drop holding piece (300), the weighing device (210) is arranged at the bottom of the detection box body (110), the weighing device (210) is not in contact with the detection box body (110), the bottom end of the bending rod (220) is fixed on the weighing device (210), the fog drop holding piece (300) is arranged at the top of the bending rod (220) in a hanging manner, and the fog drop holding piece (300) is arranged in the detection box body (110);
the device comprises a liquid medicine spray head (400), a liquid medicine tank (500) and an air compressor (700), wherein the liquid medicine spray head (400) is arranged in a detection box body (110) and is correspondingly arranged above a fog droplet retaining piece (300); the liquid medicine spray head (400) is connected with a liquid outlet of the liquid medicine tank (500) through a pipeline; an air compressor (700) is arranged on the liquid medicine tank (500).
2. The pesticide droplet retention performance detection system as claimed in claim 1, wherein the bottom end of the bending rod (220) is fixed on the weighing scale (210), the bottom end of the bending rod (220) extends upwards to the upper part of the detection box body (110) along the side edge of the detection box body (110), and the top end of the bending rod (220) is correspondingly arranged above the detection box body (110); the bending rod (220) comprises a fixing portion (221), a bending side portion (224) and a top end hanging portion (225), the fixing portion (221) is fixedly arranged on the weighing device (210), the top end hanging portion (225) is correspondingly arranged above the detection box body (110) and used for hanging the fog drop holding piece (300), and the side portion fixing portion (221) and the top end hanging portion (225) of the detection box body (110) are connected through the bending side portion (224).
3. The pesticide droplet retention performance detection system as claimed in claim 1, wherein a through hole (114) is formed in a top plate (111) of the detection box body (110), a hanging piece (301) penetrating through the through hole (114) is downwardly arranged at the top end of the bending rod (220), and a droplet retention member (300) is hung at one end of the hanging piece (301) far away from the bending rod (220).
4. The pesticide mist retention performance detection system as claimed in claim 1, wherein an outer box body (120) is arranged outside the detection box body (110), a bottom chamber (101) is formed between an outer box bottom plate (123) of the outer box body (120) and a detection box bottom plate (113) of the detection box body (110), and the ten-thousandth scale (210) is arranged in the bottom chamber (101); a side cavity (102) is formed between an outer box side plate (122) of the outer box body (120) and a detection box side plate (112) of the detection box body (110), and a bending rod (220) extends from bottom to top along the side edge of the detection box body (110) in the side cavity (102); a top cavity (103) is formed between an outer box top plate (121) of the outer box body (120) and a detection box top plate (111) of the detection box body (110), and the top end of the bending rod (220) is arranged in the top cavity (103).
5. The pesticide fog droplet retention performance detection system as claimed in claim 1, wherein the air compressor (700) is connected with the liquid medicine tank (500) through a pressure reducing valve (600).
6. The pesticide mist retention performance detection system according to claim 1, characterized in that a pressure gauge (510) is arranged on the pesticide liquid tank (500).
7. The pesticide mist retention performance detection system according to claim 1, wherein a cooling plate (116) is arranged on a top plate (111) of the detection box body (110), and a heating plate (117) is arranged on a bottom plate (113) of the detection box body (110).
8. A detection method of a pesticide droplet retention performance detection system, which is characterized in that the pesticide droplet retention performance detection system of any one of claims 1 to 7 is used, a liquid to be detected is stored in a liquid medicine tank (500), the liquid to be detected is sprayed onto a suspended droplet retention member (300) from a liquid medicine spray head (400) by using an air compressor (700), and after the spraying is finished, the reading of a weighing device (210) is stable, and the retention amount of the liquid to be detected is recorded.
9. A pesticide fog drip retention performance detection system uses fog drip retention pieces, which is characterized by comprising 2 retention pieces (311), support plates (312) and a rotating shaft (302), wherein the 2 support plates (312) are arranged on two sides of the rotating shaft (302) in a relatively rotatable manner; the holding piece (311) is arranged on the upper surface of the supporting plate (312).
10. The pesticide mist retention performance testing system used fog droplet retention member of claim 9, characterized in that the retention sheet (311) is detachably disposed on the upper surface of the support plate (312).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533117A (en) * | 2021-07-16 | 2021-10-22 | 深圳诺普信农化股份有限公司 | Method for measuring retention of impregnation liquid medicine on surface of plant leaf |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254448A (en) * | 2008-04-28 | 2008-10-23 | Ohbayashi Corp | Metering apparatus of aggregate and water |
| CN102116668A (en) * | 2011-01-28 | 2011-07-06 | 江苏省农业科学院 | Device for metering retention quantity change of spray medicine liquid on surface of plant leaf |
| CN102323176A (en) * | 2011-09-22 | 2012-01-18 | 农业部南京农业机械化研究所 | Determination device of crop leaf droplet retention amount |
| CN206740570U (en) * | 2016-12-26 | 2017-12-12 | 遵义医学院 | A device for conveniently weighing samples in liquid |
| CN109187292A (en) * | 2018-09-18 | 2019-01-11 | 江苏擎宇化工科技有限公司 | A kind of device of test droplet transmitting behavior |
| CN109596370A (en) * | 2018-11-23 | 2019-04-09 | 江苏大学 | A kind of spray testing system |
| CN212228641U (en) * | 2020-03-09 | 2020-12-25 | 中国农业科学院植物保护研究所 | A pesticide droplet retention performance detection system and a droplet retention member used therefor |
-
2020
- 2020-03-09 CN CN202010156547.6A patent/CN111220498B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254448A (en) * | 2008-04-28 | 2008-10-23 | Ohbayashi Corp | Metering apparatus of aggregate and water |
| CN102116668A (en) * | 2011-01-28 | 2011-07-06 | 江苏省农业科学院 | Device for metering retention quantity change of spray medicine liquid on surface of plant leaf |
| CN102323176A (en) * | 2011-09-22 | 2012-01-18 | 农业部南京农业机械化研究所 | Determination device of crop leaf droplet retention amount |
| CN206740570U (en) * | 2016-12-26 | 2017-12-12 | 遵义医学院 | A device for conveniently weighing samples in liquid |
| CN109187292A (en) * | 2018-09-18 | 2019-01-11 | 江苏擎宇化工科技有限公司 | A kind of device of test droplet transmitting behavior |
| CN109596370A (en) * | 2018-11-23 | 2019-04-09 | 江苏大学 | A kind of spray testing system |
| CN212228641U (en) * | 2020-03-09 | 2020-12-25 | 中国农业科学院植物保护研究所 | A pesticide droplet retention performance detection system and a droplet retention member used therefor |
Non-Patent Citations (1)
| Title |
|---|
| 何玲 等: "喷雾助剂及施液量对植保无人机喷雾雾滴在水稻冠层沉积分布的影响", 《植物保护学报》, vol. 44, no. 6, 31 December 2017 (2017-12-31), pages 1046 - 1052 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533117A (en) * | 2021-07-16 | 2021-10-22 | 深圳诺普信农化股份有限公司 | Method for measuring retention of impregnation liquid medicine on surface of plant leaf |
| CN113533117B (en) * | 2021-07-16 | 2024-03-19 | 深圳诺普信农化股份有限公司 | Method for measuring retention of impregnating liquid on plant leaf surface |
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