CN114923761A

CN114923761A - Pesticide residue detector

Info

Publication number: CN114923761A
Application number: CN202210178410.XA
Authority: CN
Inventors: 王伟一; 张明阳; 刘洋洋
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-19

Abstract

The invention discloses a pesticide residue detector which comprises a fixed plate, wherein one side of the outer wall of the fixed plate is fixedly connected with a box body, two limiting rods are fixedly connected to two sides of the inner wall of the box body, limiting columns are connected between the two limiting rods in a sliding mode, a floating block of a plastic component is fixedly connected between the two limiting columns, a baffle is arranged at the top of the floating block, and the baffle is connected with the limiting rods in a sliding mode. According to the invention, the position of the baffle plate in the box body is controlled by rotating the knob, so that a user can control the volume of the buffer solution entering the box body according to the requirement, so as to ensure the content of the buffer solution in the sample cup in the control group to be consistent for several times, improve the detection precision and accelerate the detection efficiency.

Description

Pesticide residue detector

Technical Field

The invention relates to the technical field of pesticide detection, in particular to a pesticide residue detector.

Background

The pesticide residue detector is a machine for detecting the pesticide residue on plants, and the current pesticide residue detection method comprises the following steps: 1. weighing a sample, putting the sample into a sample cup (the whole plant of the sample with pungent odor, pigment and the like is leached), then adding a buffer solution, shaking for one minute, standing to obtain a sample solution to be detected, and then adding the sample solution to be detected into a sample tube; 2. sucking the buffer solution by a large-size liquid moving machine and adding the buffer solution into the control tube, and sucking the buffer solution by the large-size liquid moving machine and adding the buffer solution into the sample tube; 3. adding cholinesterase into a control tube and a sample tube in sequence by using a small-size pipettor, replacing a gun head, adding a color-developing agent, shaking uniformly and standing for 10 minutes; 3. and replacing the gun head, sequentially adding substrate reagents into the control group and the sample tube, then immediately pouring the mixture into the cuvette, and detecting the mixture on the machine, namely judging the content of the pesticide residue by using the detector.

At present, when examining pesticide residue, can do several groups more usually and do the contrast group, prevent that the pesticide residue on the sample of taking from distributing unevenly, the inspector is difficult to all accurately put into the sample cup with quantitative buffer solution at every turn, cause artificial error easily, the inspector needs the sample cup that rocks of a large amount of repeatability simultaneously, it is comparatively tired, and pesticide and buffer solution mixing speed is slow and inhomogeneous, need urgently one kind can be according to needs, every quantitative interpolation buffer solution, and can make the device of pesticide residue flash mixed on buffer solution and the sample fast.

Therefore, it is necessary to invent a pesticide residue detector to solve the above problems.

The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The invention aims to provide a pesticide residue detector, which designs a device capable of quantitatively adding a buffer solution according to the requirement and is matched with a vibration cleaning structure so as to solve the defects in the technology.

In order to achieve the above purpose, the invention provides the following technical scheme: a pesticide residue detector comprises a fixed plate, wherein a box body is fixedly connected to one side of the outer wall of the fixed plate, two limiting rods are fixedly connected to two sides of the inner wall of the box body, a limiting post is slidably connected between the two limiting rods, a floating block of a plastic component is fixedly connected between the two limiting posts, a baffle is arranged at the top of the floating block and is slidably connected with the limiting rods, a transmission post is rotatably connected inside the baffle and penetrates through the top of the box body and is rotatably connected with the box body, a knob is fixedly connected to the top end of the transmission post, two limiting pieces are fixedly connected to the outer peripheral surface of the transmission post, the baffle is positioned between the two limiting pieces, a first press switch is fixedly connected to the bottom of the limiting pieces, a second press switch is fixedly connected to the bottom of an inner cavity of the box body, a glass plate is fixedly connected to one side of the outer wall of the box body, the bottom of the floating block is provided with a vibration cleaning structure;

vibrate clean structure include with showy piece bottom fixed connection's hollow post, open at hollow post outer peripheral face top has the inlet opening, open hollow post outer peripheral face bottom has the apopore, the first solenoid valve of hollow post middle part fixedly connected with, hollow post bottom fixedly connected with casing, shells inner wall is four springs of annular array fixedly connected with, the waterproof post of casing one end fixedly connected with is kept away from to the spring, the inside fixedly connected with motor of waterproof post, motor output shaft top fixedly connected with dysmorphism piece.

Preferably, the top of the fixing plate is fixedly connected with a water pump, the top end of an output shaft of the water pump is fixedly connected with a three-way pipe, one end of the three-way pipe is fixedly connected with the bottom of the box body, the other end of the three-way pipe is fixedly connected with a second electromagnetic valve, and the middle part of one end of the three-way pipe, which is fixedly connected with the box body, is fixedly connected with a third electromagnetic valve.

Preferably, the third solenoid valve, the water pump and the first solenoid valve are electrically connected with a first push switch, and the first solenoid valve and the motor are electrically connected with a second push switch.

Preferably, the bottom of the fixing plate is fixedly connected with a water receiving frame, and the top of the water receiving frame is fixedly connected with a sewage treatment device.

Preferably, the surface of the glass plate is marked with scale marks for indicating the content of the buffer solution in the box body.

In the technical scheme, the invention has the following technical effects and advantages:

1. the position of the baffle in the box body is controlled by rotating the knob, so that a user can control the volume of the buffer solution entering the box body according to the requirement, the content of the buffer solution in the sample cup in the control group is consistent for several times, the detection precision is improved, the detection efficiency is accelerated, the first press switch, the second press switch and the floating block in the box body are matched, the water pump and the third electromagnetic valve are only needed to be started during working, the next step is automatically carried out, the operation is simple, the use is convenient, and a large amount of repetitive labor of an experimenter is not needed;

2. after driving second press switch through the piece that floats, can start to vibrate clean structure, vibrate the quick vibrations of waterproof post in the clean structure to drive pesticide residue flash mixed uniformity on buffer solution and the sample, reduce the time of mixing, the degree of consistency of mixing simultaneously, and when constantly pouring the pure water and wasing the sample cup, can be with sample cup sanitization, prevent to detect next time and cause the error.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection between the tank and the vibration cleaning structure according to the present invention;

FIG. 3 is a schematic diagram of the inner structure of the box body of the present invention;

FIG. 4 is a sectional plan view of the case of the present invention;

FIG. 5 is a partial cross-sectional view of an oscillating cleaning structure according to the present invention;

fig. 6 is a partial cross-sectional view of a water column of the present invention.

Description of reference numerals:

1 fixed plate, 2 boxes, 3 gag lever posts, 4 spacing posts, 5 floating blocks, 6 baffles, 7 transmission posts, 8 knobs, 9 spacing pieces, 10 first press switches, 11 second press switches, 12 glass plates, 13 vibrate clean structures, 14 hollow posts, 15 inlet openings, 16 apopores, 17 first solenoid valves, 18 casings, 19 springs, 20 waterproof columns, 21 motors, 22 special-shaped blocks, 23 water pumps, 24 three-way pipes, 25 second solenoid valves, 26 third solenoid valves, 27 water receiving frames, 28 sewage treatment devices.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, steps, and so forth. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

The invention provides a pesticide residue detector as shown in figures 1-6, which comprises a fixed plate 1, wherein one side of the outer wall of the fixed plate 1 is fixedly connected with a box body 2, two limiting rods 3 are fixedly connected with two sides of the inner wall of the box body 2, a limiting post 4 is slidably connected between the two limiting rods 3, a floating block 5 of a plastic component is fixedly connected between the two limiting posts 4, the top of the floating block 5 is provided with a baffle 6, the baffle 6 is slidably connected with the limiting rods 3, the inner part of the baffle 6 is rotatably connected with a transmission post 7, the transmission post 7 penetrates through the top of the box body 2 and is rotatably connected with the box body 2, the top end of the transmission post 7 is fixedly connected with a knob 8, the outer peripheral surface of the transmission post 7 is fixedly connected with two limiting pieces 9, the baffle 6 is positioned between the two limiting pieces 9, the bottom of the limiting piece 9 is fixedly connected with a first press switch 10, the bottom of the inner cavity of the box body 2 is fixedly connected with a second press switch 11, one side of the outer wall of the box body 2 is fixedly connected with a glass plate 12, the bottom of the floating block 5 is provided with a vibration cleaning structure 13, the knob 8 is rotated to drive the transmission column 7 to rotate, the transmission column 7 is connected with the box body 2 through threads to ascend or descend, the transmission column 7 drives the baffle 6 to ascend or descend through the limiting sheet 9, and the position relation between the baffle 6 and the scale marks on the glass plate 12 is observed, so that the volume of the buffer solution in the box body 2 is controlled, when a comparison group is made next, a proper amount of buffer solution can be poured into the sample cup quickly, the working efficiency is improved, the precision is high, and different requirements can be met;

the oscillating cleaning structure 13 comprises a hollow column 14 fixedly connected with the bottom of the floating block 5, the top of the peripheral surface of the hollow column 14 is provided with a water inlet 15, the bottom of the peripheral surface of the hollow column 14 is provided with a water outlet 16, the middle of the hollow column 14 is fixedly connected with a first electromagnetic valve 17, the bottom of the hollow column 14 is fixedly connected with a shell 18, the inner wall of the shell 18 is fixedly connected with four springs 19 in an annular array manner, one end, far away from the shell 18, of each spring 19 is fixedly connected with a waterproof column 20, a motor 21 is fixedly connected inside the waterproof column 20, and the top of an output shaft of the motor 21 is fixedly connected with a special-shaped block 22; get into in the hollow tube from inlet opening 15 through the buffer solution, then discharge in 16 from the apopore, the buffer solution falls to in the sample cup, this time, float piece 5 descends along with the reduction of buffer solution, when 5 touching second press switch 11 of float piece, motor 21 starts, motor 21 output shaft drives dysmorphism piece 22 fast turn, because dysmorphism piece 22 is not whole disc, so can drive motor 21 and produce vibrations, the waterproof post 20 of vibrations can drive the buffer solution and mix fast with the pesticide residue on the sample, the speed of mixing has been accelerated, latency has been reduced, simultaneously when clean to sample cup with the pure water, utilize vibrations to make clear cleaner.

Further, in the above technical solution, the top of the fixed plate 1 is fixedly connected with a water pump 23, the top end of an output shaft of the water pump 23 is fixedly connected with a three-way pipe 24, one end of the three-way pipe 24 is fixedly connected with the bottom of the tank 2, the other end of the three-way pipe 24 is fixedly connected with a second electromagnetic valve 25, the middle part of one end of the three-way pipe 24, which is fixedly connected with the tank 2, is fixedly connected with a third electromagnetic valve 26, by starting the water pump 23 and the third electromagnetic valve 26, the water pump 23 pumps the buffer solution into the three-way pipe 24, the buffer solution enters the tank 2 and drives the floating block 5 to ascend, the floating block 5 ascends and then touches the first press switch 10, the first press switch 10 closes the water pump 23 and the third electromagnetic valve 26 through electrical connection, the first electromagnetic valve 17 is opened, and when the floating block 5 touches the second press switch 11, the first electromagnetic valve 17 is closed, and the motor 21 is started.

Further, in the above technical solution, the third electromagnetic valve 26, the water pump 23 and the first electromagnetic valve 17 are all electrically connected to the first push switch 10, the first electromagnetic valve 17 and the motor 21 are all electrically connected to the second push switch 11, and the vibration mixing step after the buffer solution enters the sample cup can be automatically completed by starting the water pump 23 and the third electromagnetic valve 26, so that the operation is simple and the use is convenient.

Further, in the above technical solution, the bottom of the fixing plate 1 is fixedly connected with a water receiving frame 27, the top of the water receiving frame 27 is fixedly connected with a sewage treatment device 28, and sewage generated when the sample cup is cleaned is collected through the water receiving frame 27.

Furthermore, in the above technical solution, the surface of the glass plate 12 is marked with scale marks indicating the content of the buffer solution in the box body 2, and the position of the baffle 6 in the box body 2 can be observed through the scale marks, so as to control the volume of the buffer solution in the box body 2.

The implementation mode is specifically as follows: preparing work: firstly, rotating a knob 8, driving a transmission column 7 to rotate by the knob 8, enabling the transmission column 7 to ascend or descend through threaded connection with a box body 2, driving a baffle 6 to ascend or descend by the transmission column 7 through a limiting sheet 9, observing the position relation between the baffle 6 and a scale mark on a glass plate 12, and accordingly controlling the volume of a buffer solution in the box body 2, and then placing a sample cup with a sample below a hollow column 14;

the working stage is as follows: starting a water pump 23 and a third electromagnetic valve 26, pumping a buffer solution into a three-way pipe 24 by the water pump 23, driving a floating block 5 to ascend after the buffer solution enters a box body 2, touching a first press switch 10 after the floating block 5 ascends, closing the water pump 23 and the third electromagnetic valve 26 by the first press switch 10 through electric connection, opening a first electromagnetic valve 17, enabling the buffer solution to enter a hollow pipe from a water inlet 15 and then be discharged from a water outlet 16, enabling the buffer solution to fall into a sample cup, descending the floating block 5 along with the descending of the buffer solution, closing the first electromagnetic valve 17 when the floating block 5 touches a second press switch 11, starting a motor 21, driving a special-shaped block 22 to rotate rapidly by an output shaft of the motor 21, driving the motor 21 to vibrate because the special-shaped block 22 is not a whole disc, driving the vibrating waterproof column 20 to drive the buffer solution to be mixed with pesticide residues on the sample rapidly, and then closing the motor 21, then repeating the steps and making a plurality of groups of control groups;

a cleaning stage: starting a motor 21, continuously adding purified water into the sample cup, and driving the purified water to vibrate along with the waterproof column 20 so as to clean the inner wall of the sample cup;

the technical effects and advantages are as follows:

the position of the baffle 6 in the box body 2 is controlled by rotating the knob 8, so that a user can control the volume of the buffer solution entering the box body 2 according to the requirement, the content of the buffer solution in the sample cups in the control group is consistent for several times, the detection precision is improved, the detection efficiency is accelerated, and the first press switch 10, the second press switch 11 and the floating block 5 in the box body 2 are matched, so that the water pump 23 and the third electromagnetic valve 26 are only needed to be started during working, the following steps are automatically carried out, the operation is simple, the use is convenient, and a large amount of repetitive labor of an experimenter is not needed;

after the floating block 5 drives the second push switch 11, the oscillation cleaning structure 13 is started, and the waterproof column 20 in the oscillation cleaning structure 13 vibrates rapidly, so as to drive the buffer solution and the pesticide residue on the sample to be mixed rapidly and uniformly, reduce the mixing time and the mixing uniformity, and when pure water is poured continuously to clean the sample cup, the sample cup can be cleaned completely, thereby preventing errors caused by next detection, the embodiment specifically solves the problems that in the prior art, when detecting pesticide residue, a plurality of groups of control groups are usually made, the pesticide residue on the sample is not uniformly distributed, a detector is difficult to accurately place quantitative buffer solution into the sample cup every time, human errors are easily caused, meanwhile, the detector needs to shake the sample cup repeatedly in a large amount, is tired, and the mixing speed of the pesticide and the buffer solution is slow and nonuniform, there is a need for a device that can add buffer solution quantitatively at a time as needed and can rapidly mix the buffer solution with the pesticide residue on the sample.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiment of the invention, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and the same embodiment and different embodiments of the invention can be combined mutually under the condition of no conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a pesticide residue detector, includes fixed plate (1), its characterized in that: the plastic floating block is characterized in that a box body (2) is fixedly connected to one side of the outer wall of the fixing plate (1), two limiting rods (3) are fixedly connected to two sides of the inner wall of the box body (2), limiting columns (4) are slidably connected between the two limiting rods (3), a floating block (5) of a plastic component is fixedly connected between the two limiting columns (4), a baffle (6) is arranged at the top of the floating block (5), the baffle (6) is slidably connected with the limiting rods (3), a transmission column (7) is rotatably connected inside the baffle (6), the transmission column (7) penetrates through the top of the box body (2) and is rotatably connected with the box body (2), a knob (8) is fixedly connected to the top end of the transmission column (7), two limiting pieces (9) are fixedly connected to the outer peripheral face of the transmission column (7), and the baffle (6) is located between the two limiting pieces (9), the bottom of the limiting sheet (9) is fixedly connected with a first press switch (10), the bottom of the inner cavity of the box body (2) is fixedly connected with a second press switch (11), one side of the outer wall of the box body (2) is fixedly connected with a glass plate (12), and the bottom of the floating block (5) is provided with a vibration cleaning structure (13);

vibrate clean structure (13) include with floating block (5) bottom fixed connection's hollow post (14), open at hollow post (14) outer peripheral face top has inlet opening (15), open hollow post (14) outer peripheral face bottom has apopore (16), the first solenoid valve of hollow post (14) middle part fixedly connected with (17), hollow post (14) bottom fixedly connected with casing (18), casing (18) inner wall is four springs (19) of annular array fixedly connected with, casing (18) one end fixedly connected with waterproof post (20) are kept away from in spring (19), waterproof post (20) inside fixedly connected with motor (21), motor (21) output shaft top end fixedly connected with dysmorphism piece (22).

2. The pesticide residue detector according to claim 1, characterized in that: the water pump (23) is fixedly connected to the top of the fixing plate (1), the three-way pipe (24) is fixedly connected to the top of an output shaft of the water pump (23), one end of the three-way pipe (24) is fixedly connected to the bottom of the box body (2), the second electromagnetic valve (25) is fixedly connected to the other end of the three-way pipe (24), and the third electromagnetic valve (26) is fixedly connected to the middle of one end, fixedly connected to the box body (2), of the three-way pipe (24).

3. The pesticide residue detector according to claim 2, characterized in that: the third electromagnetic valve (26), the water pump (23) and the first electromagnetic valve (17) are electrically connected with the first press switch (10), and the first electromagnetic valve (17) and the motor (21) are electrically connected with the second press switch (11).

4. The pesticide residue detector according to claim 1, characterized in that: the bottom of the fixing plate (1) is fixedly connected with a water receiving frame (27), and the top of the water receiving frame (27) is fixedly connected with a sewage treatment device (28).

5. The pesticide residue detector according to claim 1, characterized in that: the surface of the glass plate (12) is marked with scale marks for indicating the content of the buffer solution in the box body (2).