CN212275379U - Agricultural product pesticide residue detection sample preparation facilities - Google Patents

Abstract

A preparation device for agricultural product pesticide residue detection samples relates to the technical field of agricultural product detection. The utility model discloses a preparation that only can carry out an agricultural product sample at every turn when solving current sample preparation leads to the detection cycle length, problem that detection efficiency is low. The utility model discloses a preparation groove, ultrasonic transducer, a plurality of net cages, a plurality of box with a net back shaft and transducer moving mechanism, the preparation inslot is equipped with a plurality of baffles along the length direction equipartition, every baffle sets up along the width direction in preparation groove respectively, middle part between every two adjacent baffles all is equipped with a box with a net, every box with a net sets up the middle part at a box with a net back shaft respectively, every box with a net back shaft is connected with the inside wall in preparation groove through a box with a net elevating system respectively, ultrasonic transducer passes through the upper end of transducer support suspension in the notch in preparation groove, transducer horizontal migration mechanism is passed through to the one end of transducer support and is connected with the upper end in preparation groove. The utility model is used for pesticide residue detects sample preparation.

Description

Agricultural product pesticide residue detection sample preparation facilities

Technical Field

The utility model relates to an agricultural product detects technical field, concretely relates to agricultural product pesticide residue detects sample preparation facilities.

Background

The development of agricultural industrialization makes the production of agricultural products depend on exogenous substances such as pesticides, antibiotics and hormones. The amount of agricultural chemicals in agricultural products in China is high, and the unreasonable use of the substances can lead to the overproof pesticide residues in the agricultural products, influence the edible safety of consumers, and cause the consumers to have diseases and abnormal development in serious cases, even directly cause poisoning and death. The over-standard pesticide residue also affects the trade of agricultural products, countries in the world pay high attention to the problem of pesticide residue, and increasingly strict limit standards are stipulated for pesticide residue in various agricultural and sideline products, so that the export of agricultural products in China faces a severe challenge. The harm of pesticide residue to human body is controlled, and one of the most effective methods is to strengthen the detection strength of pesticide residue in food. The detection and analysis of the pesticide residues in the world at present develops towards multi-residue and rapid analysis, and a strict pesticide residue confirmation technology is needed to ensure the accuracy of a high-flux detection method. The existing pesticide residue rapid detection methods are various in types, and are mainly divided into two main types, namely biochemical detection methods and chromatographic detection methods. The enzyme inhibition rate method in the biochemical determination method is listed as a national recommended standard method (GB/T5009.199-2003) due to the characteristics of rapidness, sensitivity, simple and convenient operation, low cost and the like, becomes one of the mainstream technologies for rapidly and qualitatively primary screening and detecting organophosphorus and carbamate pesticide residues in fruits and vegetables, and is increasingly widely applied.

The current pesticide residue detection procedure comprises the following steps: collecting samples: sampling, transporting and storing samples; sample pretreatment: dividing, removing or crushing the sample to form a detection sample; sample preparation: extraction: procedure for separating residual pesticide from sample: purifying: the separation process of the pesticide and the interfering substance in the extract comprises the following steps: and (4) analyzing and measuring.

The existing sample preparation device can only carry out ultrasonic treatment on one agricultural product sample at a time, however, when a detection mechanism is used for detection, large-scale pesticide residue sample collection is often carried out, detection is carried out in batches, and only one agricultural product sample can be prepared at a time, so that the detection period is long, and the detection efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a preparation that only can carry out an agricultural product sample at every turn when solving current sample preparation leads to the detection cycle length, problem that detection efficiency is low, and then provides an agricultural product pesticide residue and detects sample preparation facilities.

The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:

the utility model provides an agricultural product pesticide residue detects sample preparation facilities is including preparing the groove, ultrasonic transducer, a plurality of box with a net back shaft and transducer moving mechanism, it is equipped with a plurality of baffles to follow the length direction equipartition in the preparation groove, every baffle sets up along the width direction in preparation groove respectively, middle part between per two adjacent baffles all is equipped with a box with a net, every box with a net sets up the middle part at a box with a net back shaft respectively, every box with a net back shaft is connected with the inside wall in preparation groove through a box with a net elevating system respectively, ultrasonic transducer passes through the upper end of transducer support suspension in the notch in preparation groove, the one end of transducer support is passed through transducer horizontal migration mechanism and is connected with the upper end in preparation groove.

Compared with the prior art, the utility model the beneficial effect who contains is:

the utility model discloses separate into a plurality of solitary small-size preparation grooves with whole preparation groove through the baffle, every small-size preparation inslot all has a box with a net, can place an agricultural product sample in every box with a net, carry out the independent processing to a plurality of samples through mobilizable ultrasonic transducer, once can accomplish the preparation process of a plurality of samples, be fit for extensive pesticide residue sample collection, shortened pesticide residue detection cycle, high inspection efficiency, the sample preparation process has been accelerated, and the on-the-spot real-time collection marshalling has been realized, prevent to wait to examine the problem that the sample obscures, the field of quarantine has extensive suitability.

Drawings

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

fig. 2 is a schematic structural diagram of the ultrasonic transducer 2 and the transducer moving mechanism according to the present invention;

fig. 3 is a top view of the net cage 3, the net cage support shaft 4, the net cage lifting mechanism and the net cage revolving mechanism according to the present invention;

fig. 4 is a schematic structural diagram of the middle net cage 3 of the present invention.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and the agricultural product pesticide residue detection sample preparation device of the present embodiment includes a preparation tank 1 and an ultrasonic transducer 2, the device comprises a plurality of net cages 3, a plurality of net cage supporting shafts 4 and an energy converter moving mechanism, wherein a plurality of partition plates 1-1 are uniformly distributed in a preparation groove 1 along the length direction, each partition plate 1-1 is arranged along the width direction of the preparation groove 1, a net cage 3 is arranged in the middle between every two adjacent partition plates 1-1, each net cage 3 is arranged in the middle of one net cage supporting shaft 4, each net cage supporting shaft 4 is connected with the inner side wall of the preparation groove 1 through a net cage lifting mechanism, an ultrasonic energy converter 2 is suspended at the upper end of the notch of the preparation groove 1 through an energy converter support 5, and one end of the energy converter support 5 is connected with the upper end of the preparation groove 1 through an energy converter horizontal moving mechanism.

In the embodiment, when the device is used, the plurality of net cages 3 can be firstly lifted to the notch positions through the net cage lifting mechanisms respectively, then specified amounts of buffer solutions are respectively injected between the partition plates 1-1 in the preparation tank 1, then the extracted samples are placed in the net cages 3, the net cages 3 are closed, the net cages 3 are lowered and placed in the buffer solutions through the net cage lifting mechanisms, then the ultrasonic transducers 2 are started, the ultrasonic transducers 2 are sequentially horizontally moved to positions right above the plurality of net cages 3 through the transducer moving mechanisms, the samples in the net cages 3 are sequentially subjected to ultrasonic treatment one by one, after the treatment is finished, the plurality of net cages 3 are lifted to the notch positions through the net cage lifting mechanisms respectively, and sample residues are taken out. The design can save the time of getting of sample, place the sample simultaneously with in the net cage 3, prevent among the ultrasonic treatment process sample piece from entering into buffer solution, buffer solution after the preparation can need not to filter direct detection, reduces the filtering process of buffer solution. Thereby shortening the detection period.

Two ends of the partition board 1-1 are respectively and vertically fixedly connected with the inner side wall of the preparation groove 1, and the lower end of the partition board 1-1 is vertically and fixedly connected with the bottom of the preparation groove 1.

The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 2, the transducer horizontal movement mechanism of the embodiment includes a lead screw 6, a nut 7 and a stepping motor 8, the lead screw 6 is fixedly connected to one side of the upper end of the notch of the preparation tank 1 along the length direction, the front end of the lead screw 6 is connected to a motor shaft of the stepping motor 8, the nut 7 is rotatably mounted on the lead screw 6, the outer side of the nut 7 is fixedly connected to a transducer support 5, an ultrasonic transducer 2 is arranged at the upper end of the transducer support 5, and the position of the ultrasonic transducer 2 corresponds to the net cage 3. Other components and connection modes are the same as those of the first embodiment.

So design starts step motor 8 and drives lead screw 6 and rotate, drives transducer support 5 through nut 7 and moves along the horizontal direction to with ultrasonic transducer 2 horizontal migration to needs ultrasonic treatment's box with a net 3 directly over. The stepping motor 8 controls the forward and reverse rotation of the lead screw 6 through forward rotation and reverse rotation to drive the nut 7 to move forward and backward.

The third concrete implementation mode: referring to fig. 1 to 2, the embodiment is described, in which one travel switch 17 is respectively disposed at each of the front and rear sides of the transducer support 5, and stoppers 18 are disposed at each of the front and rear ends of the notch of the preparation tank 1, and the positions of the stoppers 18 correspond to the travel switches 17. Other components and connection modes are the same as those of the second embodiment.

The travel switches 17 are arranged at the front end and the rear end of the transducer support 5, and when the transducer support 5 moves to the front end and the rear end of the preparation groove 1, the corresponding stop blocks 18 are touched, so that the transducer support 5 automatically turns around to make reciprocating motion, and the situation that the transducer support 5 exceeds the travel of the lead screw 6 due to the control fault of the stepping motor 8 is avoided.

The fourth concrete implementation mode: referring to fig. 1 and 3, the cage lifting mechanism of the present embodiment includes a lifting motor 9, a lifting driving wheel 10, and a lifting driven wheel 11, the net cage support shaft device comprises a rack 12, two sliding blocks 23 and two sliding grooves 1-2, wherein two ends of a net cage support shaft 4 are respectively and vertically fixedly connected with one sliding block 23, the inner side walls of two sides of a preparation groove 1 are respectively and respectively provided with one sliding groove 1-2 along the height direction, each sliding block 23 is respectively inserted into the sliding groove 1-2 and is in sliding connection with the sliding groove 1-2, one side of the net cage support shaft 4 is fixedly connected with a lifting motor 9, a motor shaft of the lifting motor 9 is fixedly connected with a lifting driving wheel 10, the end part of one side of the net cage support shaft 4 is rotatably connected with a lifting driven wheel 11, the lifting driving wheel 10 is meshed with the lifting driven wheel 11, the inner side wall of one side of the preparation groove 1 is fixedly connected with the rack 12 along the height direction. The other components and the connection mode are the same as those of the first embodiment, the second embodiment or the third embodiment.

The lifting motor 9 drives the lifting driving wheel 10 to rotate, the lifting driving wheel 10 drives the lifting driven wheel 11 to rotate, the lifting driven wheel 11 is meshed with the rack 12, and the lifting driven wheel 11 drives the net cage supporting shaft 4 and the net cage 3 to ascend or descend in the vertical direction under the guiding action of the sliding block 23 and the sliding grooves 1-2.

The fifth concrete implementation mode: in the present embodiment, a bearing 21 is provided between the end portion of the cage support shaft 4 side and the driven elevating wheel 11, as described with reference to fig. 1 and 3. The other components and the connection mode are the same as those of the fourth embodiment.

The sixth specific implementation mode: referring to fig. 1 and 3, the embodiment is described, in which a plurality of rollers 16 are uniformly disposed between the side wall of the slider 23 and the wall of the chute 1-2. The other components and the connection mode are the same as those of the fourth embodiment.

So designed as to reduce the friction between the slider 23 and the runner 1-2.

The seventh embodiment: the embodiment is described with reference to fig. 1, fig. 3 and fig. 4, the net cage 3 of the embodiment includes an upper cover 3-1 and a rectangular box 3-2, an upper end surface of the rectangular box 3-2 is open, the upper cover 3-1 covers an upper end surface of the rectangular box 3-2, the upper cover 3-1 is connected with the rectangular box 3-2 through a plurality of pin shafts, a filter screen is fixedly connected to a lower end surface and four side end surfaces of the rectangular box 3-2 and the upper cover 3-1, a feeding port 3-3 is arranged in the middle of the upper cover 3-1, and an outer cover 3-4 is arranged outside the feeding port 3-3. Other compositions and connection modes are the same as those of the first, second, third, fifth or sixth embodiment modes.

In this embodiment, the net cage support shaft 4 and the net cage 3 may be connected by a shaft sleeve 22, the shaft sleeve 22 is fixedly inserted into the side wall of the net cage 3, the net cage support shaft 4 is inserted into the shaft sleeve 22, and simultaneously, reinforcing ribs may be disposed on each end surface of the net cage 3, the reinforcing ribs being disposed on the inner side of the filter screen to enhance the stability of the net cage 3 and prevent the net cage 3 from deforming. A sealing ring is arranged between the net cage supporting shaft 4 and the shaft sleeve 22.

The filter screen setting both can stop the sample and flow out the outside of box with a net 3, can make the buffer solution fully enter into box with a net 3 again.

The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 and 3, and a net cage rotating mechanism is further disposed between the net cage 3 and the net cage supporting shaft 4 in the present embodiment. The other components and the connection mode are the same as those of the seventh embodiment.

The design can make the net cage 3 rotate, so that the sample can fully react during ultrasonic treatment.

The specific implementation method nine: the embodiment is described with reference to fig. 1 and 3, the net cage rotating mechanism in the embodiment includes a rotating motor 13, a rotating driving wheel 14 and a rotating gear ring 15, the rotating motor 13 is fixedly connected to the net cage supporting shaft 4 after a motor shaft of the rotating motor 13 is fixedly connected to the rotating driving wheel 14, the rotating gear ring 15 is fixedly connected to one side end face of the net cage 3, the rotating gear ring 15 is arranged outside the net cage supporting shaft 4, a center line of the rotating gear ring 15 is arranged in a collinear manner with an axis of the net cage supporting shaft 4, and the rotating gear ring 15 is engaged with the rotating driving wheel 14. The other components and connection modes are the same as those of the eighth embodiment.

In this embodiment, the turning motor 13 is turned on to drive the turning driving wheel 14 to rotate, and the turning gear ring 15 drives the net cage 3 to rotate around the net cage supporting shaft 4 as a rotation center.

The detailed implementation mode is ten: referring to FIG. 1, the present embodiment is described, wherein a liquid injection port 19 and a liquid discharge port 20 are respectively provided between two adjacent partition boards 1-1, the liquid injection port 19 is provided at the upper part of the side wall of the preparation tank 1, the liquid discharge port 20 is provided at the lower part of the side wall of the preparation tank 1, and valves are provided at both the liquid injection port 19 and the liquid discharge port 20. Other components and connection modes are the same as those of the first embodiment, the second embodiment, the third embodiment, the fifth embodiment, the sixth embodiment, the eighth embodiment or the ninth embodiment.

During ultrasonic treatment, a certain amount of buffer solution can be injected into the preparation tank 1 through the injection port 19, the outer cover 3-4 outside the feeding port 3-3 is opened when a sample is loaded, the sample is placed, then the outer cover 3-4 is tightly covered, the outer cover 3-4 can be connected with the feeding port 3-3 through threads, then ultrasonic treatment is carried out, the sample and the buffer solution are fully mixed to obtain sample liquid, the required amount is extracted from the preparation tank 1, after the treatment is finished, the pin shaft can be opened, the upper cover 3-1 is taken down, residues are taken out, then the upper cover 3-1 and the rectangular box body 3-2 are cleaned, when the rectangular box body 3-2 is cleaned, the residual liquid can be discharged from the liquid discharge port 20 firstly, then cleaning liquid is injected through the injection port 19, the rectangular box body 3-2 is lowered to be below the liquid level through the net cage lifting mechanism, then, the rectangular box body 3-2 is inverted, the opening of the box body faces downwards, then the ultrasonic transducer 2 is started, ultrasonic cleaning is carried out, and after cleaning is finished, cleaning liquid is discharged from the liquid discharge port 20.

The device also comprises a controller, the ultrasonic transducer 2, the rotary motor 13, the lifting motor 9 and the stepping motor 8 are respectively connected with the controller, the travel switch 17 is connected with the controller, and the travel switch 17 transmits a control signal to the controller to control the stepping motor 8 to rotate reversely.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (10)

1. A sample preparation facilities is detected to agricultural product pesticide residue which characterized in that: the preparation device for agricultural product pesticide residue detection samples comprises a preparation groove (1), an ultrasonic transducer (2), a plurality of net cages (3), a plurality of net cage support shafts (4) and a transducer moving mechanism, a plurality of partition plates (1-1) are uniformly distributed in the preparation groove (1) along the length direction, each partition plate (1-1) is arranged along the width direction of the preparation groove (1), a net cage (3) is arranged in the middle between every two adjacent partition plates (1-1), each net cage (3) is arranged in the middle of a net cage supporting shaft (4), each net cage supporting shaft (4) is connected with the inner side wall of the preparation groove (1) through a net cage lifting mechanism, an ultrasonic transducer (2) is suspended at the upper end of a notch of the preparation groove (1) through a transducer support (5), and one end of the transducer support (5) is connected with the upper end of the preparation groove (1) through a transducer horizontal moving mechanism.

2. The agricultural product pesticide residue detection sample preparation device according to claim 1, characterized in that: transducer horizontal migration mechanism includes lead screw (6), nut (7) and step motor (8), and lead screw (6) are along one side of length direction rigid coupling in preparation groove (1) notch upper end, and the front end of lead screw (6) is connected with the motor shaft of step motor (8), and nut (7) are adorned on lead screw (6) soon, the outside and transducer support (5) rigid coupling of nut (7), and ultrasonic transducer (2) set up the upper end in transducer support (5), and the position of ultrasonic transducer (2) is corresponding with net cage (3).

3. The agricultural product pesticide residue detection sample preparation device according to claim 2, characterized in that: the front side and the rear side of the transducer support (5) are respectively provided with a travel switch (17), the front end and the rear end of the notch of the preparation groove (1) are respectively provided with a stop block (18), and the positions of the stop blocks (18) correspond to the travel switches (17).

4. The agricultural product pesticide residue detection sample preparation device according to claim 1, 2 or 3, wherein: the net cage lifting mechanism comprises a lifting motor (9), a lifting driving wheel (10), a lifting driven wheel (11), a rack (12), two sliders (23) and two chutes (1-2), wherein two ends of a net cage supporting shaft (4) are respectively and vertically fixedly connected with one slider (23), the inner side walls of two sides of a preparation groove (1) are respectively provided with one chute (1-2) along the height direction, each slider (23) is respectively inserted in the chute (1-2) and is in sliding connection with the chute (1-2), one side of the net cage supporting shaft (4) is fixedly connected with the lifting motor (9), a motor shaft of the lifting motor (9) is fixedly connected with the lifting driving wheel (10), the end part of one side of the net cage supporting shaft (4) is rotatably connected with the lifting driven wheel (11), the lifting driving wheel (10) is meshed with the lifting driven wheel (11), the rack (12) is fixedly connected on the inner side wall of one side of the preparation groove (, the rack (12) is arranged on one side of the lifting driven wheel (11) and is meshed with the lifting driven wheel (11).

5. The agricultural product pesticide residue detection sample preparation device according to claim 4, wherein: and a bearing (21) is arranged between the end part of one side of the net cage supporting shaft (4) and the lifting driven wheel (11).

6. The agricultural product pesticide residue detection sample preparation device according to claim 4, wherein: a plurality of rollers (16) are uniformly distributed between the side wall of the sliding block (23) and the wall of the sliding groove (1-2).

7. The agricultural product pesticide residue detection sample preparation device according to claim 1, 2, 3, 5 or 6, wherein: the net cage (3) comprises an upper cover (3-1) and a rectangular box body (3-2), the upper end face of the rectangular box body (3-2) is open, the upper cover (3-1) is covered on the upper end face of the rectangular box body (3-2), the upper cover (3-1) is connected with the rectangular box body (3-2) through a plurality of pin shafts, the lower end face and four side end faces of the rectangular box body (3-2) and the upper cover (3-1) are fixedly connected with filter screens, a feeding port (3-3) is arranged in the middle of the upper cover (3-1), and an outer cover (3-4) is arranged on the outer side of the feeding port (3-3).

8. The agricultural product pesticide residue detection sample preparation device according to claim 7, wherein: a net cage rotating mechanism is arranged between the net cage (3) and the net cage supporting shaft (4).

9. The agricultural product pesticide residue detection sample preparation device according to claim 8, wherein: the net cage rotating mechanism comprises a rotating motor (13), a rotating driving wheel (14) and a rotating gear ring (15), the rotating motor (13) is fixedly connected with the rotating driving wheel (14) after being fixedly connected with a motor shaft of the rotating motor (13) on a net cage supporting shaft (4), the rotating gear ring (15) is fixedly connected with one side end face of the net cage (3), the rotating gear ring (15) is arranged on the outer side of the net cage supporting shaft (4), the central line of the rotating gear ring (15) is arranged in a collinear mode with the axis of the net cage supporting shaft (4), and the rotating gear ring (15) is meshed with the rotating driving wheel (14).

10. The agricultural product pesticide residue detection sample preparation device according to claim 1, 2, 3, 5, 6, 8 or 9, wherein: and a liquid injection port (19) and a liquid discharge port (20) are respectively arranged between every two adjacent partition plates (1-1), the liquid injection port (19) is arranged at the upper part of the side wall of the preparation tank (1), the liquid discharge port (20) is arranged at the lower part of the side wall of the preparation tank (1), and valves are respectively arranged on the liquid injection port (19) and the liquid discharge port (20).

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