CN111060656A - Detection apparatus for screening toxic harmful pesticide residue - Google Patents
Detection apparatus for screening toxic harmful pesticide residue Download PDFInfo
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- CN111060656A CN111060656A CN201911388408.XA CN201911388408A CN111060656A CN 111060656 A CN111060656 A CN 111060656A CN 201911388408 A CN201911388408 A CN 201911388408A CN 111060656 A CN111060656 A CN 111060656A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a detection device for screening toxic and harmful pesticide residues, which comprises a workbench, a sampling box and an analysis device, wherein the sampling box is internally provided with a plurality of weighing cylinders, a weighing device for weighing the weight of an agricultural product sample put into a sample bottle, a clamping main body and an oscillating assembly; a plurality of groups of clamping assemblies for clamping the weighing cylinder are symmetrically arranged on the clamping main body, and each clamping assembly comprises a clamping rod capable of clamping the weighing cylinder and a lifting mechanism for driving the weighing cylinder to lift; the invention is provided with the weighing device, the oscillating mechanism and the analysis device, meets the requirement of detecting general pesticide residues, and is more convenient to use; under the cooperation of oscillating mechanism and elevating system, can rise and weigh the sample bottle after accomplishing to the automatic oscillation work that accomplishes subtracts this operation on the manual removal sample bottle of testing personnel to the oscillator, alleviates testing personnel's the amount of labour, has also improved work efficiency.
Description
Technical Field
The invention relates to the field of pesticide residue detection equipment, in particular to a detection device for screening toxic and harmful pesticide residues.
Background
At present, in order to improve the yield of agricultural products and fruits, people use pesticides during planting, in the process of monitoring the quality of the agricultural products, the residual quantity of the pesticides in the agricultural products is taken as an important index and closely related to the quality of the agricultural products, when the agricultural products detect the pesticide residues, vegetables and fruits to be detected are firstly cut into 10mm square, a sample with a certain weight is put into a sample bottle, a certain amount of buffer is added into the sample bottle, a certain amount of supernatant is taken after oscillation and standing for a period of time, then a medicament is further added, and finally the sample is put into a pesticide detector for detection, an electronic balance oscillator is needed in the sampling process, a detection person needs to manually put the sample bottle into the oscillator for oscillation after weighing, the step from the electronic balance to the oscillator cannot be automatically realized, the labor amount of the detection person can be effectively reduced after the electronic balance of the sample bottle is automatically put into the oscillator, especially when detecting multiple samples, the invention designs an integrated detection device which can realize the step from an electronic balance to an oscillator automatically.
Disclosure of Invention
The invention provides a detection device for screening toxic and harmful pesticide residues, which can solve the problem that a pesticide residue detection device in the prior art cannot automatically oscillate a weighed sample bottle.
A detection device for screening toxic and harmful pesticide residues comprises a workbench, a sampling box arranged on the workbench and an analysis device arranged on the workbench and used for detecting pesticide residues, wherein the top of the sampling box is provided with an opening, a plurality of weighing cylinders used for placing sample bottles, a weighing device used for weighing the weight of agricultural product samples placed in the sample bottles, a clamping main body and an oscillating assembly;
a plurality of groups of clamping assemblies for clamping the weighing cylinder are symmetrically arranged on the clamping main body, and each clamping assembly comprises a clamping rod capable of clamping the weighing cylinder and a lifting mechanism for driving the weighing cylinder to lift;
when the lifting mechanism drives the weighing cylinder to move to the highest position, the oscillating assembly can drive the clamping main body to move in the length direction of the workbench;
when the lifting mechanism drives the weighing cylinder to move to the lowest position, the weighing cylinder is positioned on the weighing device and separated from the clamping rod.
Preferably, the sampling box is concave, the side walls of the two sides of the concave part of the sampling box are provided with grooves, the two ends of the clamping main body are respectively positioned in the two grooves, the bottom of the clamping main body is fixedly connected with a sliding block, the groove wall of each groove is provided with a sliding groove matched with the corresponding sliding block, and the oscillating assembly is positioned in one of the grooves;
the oscillating assembly comprises an oscillating motor and a crank connecting rod mechanism which are fixedly arranged in the groove, and the oscillating motor drives the clamping main body to reciprocate through the crank connecting rod mechanism.
Preferably, the lifting mechanism comprises a screw rod, a connecting block rotatably connected to the screw rod and a lifting motor fixedly installed in the sampling box, a lifting groove matched with the connecting block is formed in the clamping main body, an internal thread hole matched with the screw rod is formed in the top of the lifting groove, a transmission block is fixedly connected to the end portion of an output shaft of the lifting motor, a clamping groove matched with the transmission block is formed in the bottom end of the screw rod, a part of the transmission block is located in the clamping groove, and a abdicating groove used for abdicating the transmission block is formed in the clamping groove;
when the screw rod is in a rotating state, the connecting block can move upwards or downwards in the lifting groove, and when the connecting block moves to the top of the lifting groove, the screw rod is separated from an output shaft of the lifting motor.
The preferred, the tip of supporting rod articulates there are two splint, be provided with on the supporting rod and be used for promoting splint are contradicted spring on the weighing cylinder, the both sides of supporting rod still are provided with the push pedal respectively, push pedal slidable ground sets up on the supporting rod, fixedly connected with in the centre gripping main part with push pedal complex arc is protruding the in-process that the supporting rod descends, the push pedal is in conflict under the effect of arc protruding department the one end department of splint can make splint with the separation of weighing cylinder.
Preferably, the oscillating motor is electrically connected with a power supply through a motor switch and a self-resetting button switch; the motor switch controls the starting and stopping of the oscillating motor, the self-resetting button switch controls the power on and off of a loop of the oscillating motor, a push rod and a spring used for pushing the push rod to abut against the self-resetting button switch are arranged in the clamping main body, the push rod is connected with a connecting plate, one end of the connecting plate is located in the lifting groove, when the lifting mechanism drives the connecting block to ascend, the connecting block abuts against the lower side of the connecting plate and drives the push rod to ascend, and therefore the push rod is separated from the self-resetting button switch;
when the ejector rod abuts against the self-reset button switch, the oscillating motor loop is powered off, the motor switch cannot start the oscillating motor, and when the ejector rod is separated from the self-reset button switch, the oscillating motor loop is powered on, and the motor switch can control the starting and stopping of the oscillating motor.
Preferably, six weighing cylinders and three groups of six clamping assemblies which are symmetrically arranged are arranged in the sampling box.
Preferably, the analysis device is a pesticide residue detector with the model of HM-NC 10.
Preferably, the weighing device is a high-precision electronic balance.
Compared with the prior art, the invention has the beneficial effects that: the invention is provided with the weighing device, the oscillating mechanism and the analysis device, meets the requirement of detecting general pesticide residues, and is more convenient to use;
under the coordination of the oscillating mechanism and the lifting mechanism, the sample bottle after weighing can be lifted, the oscillating work is automatically completed, the operation that a detector manually moves the sample bottle to the oscillator is subtracted, the labor amount of the detector is reduced, and the working efficiency is also improved;
the symmetry sets up and multiunit centre gripping subassembly, can oscillate in batches, can satisfy the demand that detects the multiple sample while.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the sampling box of the present invention;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 3 in accordance with the present invention;
FIG. 5 is a partial cross-sectional view at C of FIG. 3 of the present invention;
FIG. 6 is a partial cross-sectional view taken at D of FIG. 3 of the present invention;
FIG. 7 is a cross-sectional view of the sampling chamber of the present invention in an operative condition;
FIG. 8 is a partial cross-sectional view at E of FIG. 7 of the present invention;
fig. 9 is a sectional view at the clamping bar of the present invention.
Description of reference numerals:
1-workbench, 2-sampling box, 3-analysis device, 4-sample bottle, 5-weighing cylinder, 6-weighing device, 7-clamping body, 8-clamping rod, 9-connecting block, 10-lifting groove, 11-screw rod, 13-lifting motor, 14-internal threaded hole, 15-transmission block, 16-clamping groove, 17-abdicating groove, 21-clamping plate, 22-push plate, 23-arc bulge, 31-groove, 32-slide block, 33-slide groove, 34-oscillating motor, 35-crank link mechanism, 36-self-resetting button switch and 37-ejector rod.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
As shown in fig. 1 to 9, a detection device for screening toxic and harmful pesticide residues provided by an embodiment of the present invention includes a workbench 1, a sampling box 2 mounted on the workbench 1, and an analysis device 3 mounted on the workbench 1 for detecting pesticide residues, wherein an opening is formed at the top of the sampling box 2, and a plurality of weighing cylinders 5 for placing sample bottles 4, a weighing device 6 for weighing agricultural product samples placed in the sample bottles 4, a clamping body 7, and an oscillating assembly are arranged in the sampling box 2;
the bottom of the weighing cylinder 5 is sealed, the top of the weighing cylinder is opened, the sample bottle 4 is placed in the weighing cylinder, and the sample bottle is reset and then weighed when being weighed;
a plurality of groups of clamping assemblies for clamping the weighing cylinder 5 are symmetrically arranged on the clamping main body 7, and each clamping assembly comprises a clamping rod 8 capable of clamping the weighing cylinder 5 and a lifting mechanism for driving the weighing cylinder 5 to lift;
when the lifting mechanism drives the weighing cylinder 5 to move to the highest position, the oscillating assembly can drive the clamping main body 7 to move in the length direction of the workbench 1;
when the lifting mechanism drives the weighing cylinder 5 to move to the lowest position, the weighing cylinder 5 is positioned on the weighing device 6 and separated from the clamping rod 8;
the sampling box 2 is concave in outline, grooves 31 are formed in the side walls of two sides of a concave portion (namely, two sides along the length direction of the workbench 1), two ends of the clamping main body 7 are respectively located in the two grooves 31, a sliding block 32 is fixedly connected to the bottom of the clamping main body 7, a sliding groove 33 matched with the sliding block 32 is formed in the groove wall of each groove 31, and the oscillating assembly is located in one of the grooves 31;
the oscillating assembly comprises an oscillating motor 34 and a crank connecting rod mechanism 35 which are fixedly arranged in the groove 31, and the oscillating motor 34 drives the clamping main body 7 to reciprocate along the length direction of the workbench 1 through the crank connecting rod mechanism 35;
the lifting mechanism comprises a screw rod 11, a connecting block 9 which is rotatably connected to the screw rod 11 and a lifting motor 13 which is fixedly installed in the sampling box 2, a lifting groove 10 which is matched with the connecting block 9 is formed in the clamping main body 7, an internal thread hole 14 which is matched with the screw rod 11 is formed in the top of the lifting groove 10, a transmission block 15 is fixedly connected to the end part of an output shaft of the lifting motor 13, a clamping groove 16 which is matched with the transmission block 15 is formed in the bottom end of the screw rod 11, one part of the transmission block 15 is located in the clamping groove 16, and a abdicating groove 17 which is used for abdicating the transmission block 15 is formed in the clamping groove 16;
the screw rod 11 is provided with an annular groove, the connecting block 9 is arranged at the annular groove, the connecting block 9 can rotate by taking a point on the axial lead of the screw rod 11 as a center, and when the screw rod 11 rotates, the connecting block 9 only can move up and down under the limitation of the lifting groove 10 and rotates relative to the screw rod 11;
when the screw rod 11 is in a rotating state, the connecting block 9 can move upwards or downwards in the lifting groove 10, and when the connecting block 9 moves to the top of the lifting groove 10, the screw rod 11 is separated from an output shaft of the lifting motor 13;
as shown in fig. 8, after the lifting mechanism drives the screw rod 11 to rise, the screw rod 11 is separated from the output shaft of the lifting motor 13, but is not separated from the transmission block 15, the transmission block 15 can still drive the screw rod 11 to rotate, and the monofilament rod 11 can also move in the length direction of the workbench 1;
the transmission block 15 is plate-shaped;
the end part of the clamping rod 8 is hinged with two clamping plates 21, a spring used for pushing the clamping plates 21 to abut against the weighing cylinder 5 is arranged on the clamping rod 8, push plates 22 are respectively arranged on two sides of the clamping rod 8, the push plates 22 are slidably arranged on the clamping rod 8, an arc-shaped bulge 23 matched with the push plates 22 is fixedly connected to the clamping main body 7, and in the descending process of the clamping rod 8, the push plates 22 abut against one end of the clamping plates 21 under the action of the arc-shaped bulge 23, so that the clamping plates 21 can be separated from the weighing cylinder 5;
as shown in fig. 2 and fig. 3, at this time, the weighing cylinder 5 is not clamped by the clamping plate 21, after the weighing is completed, the lifting mechanism starts to drive the clamping rod 8 to move, and in the moving process, the clamping plate 21 clamps the weighing cylinder 5 and drives the weighing cylinder 5 to ascend;
the oscillating motor 34 is electrically connected with a power supply through a motor switch and a self-resetting button switch 36; the motor switch controls the starting and stopping of the oscillating motor 34, the self-reset button switch 36 controls the power on and off of a loop of the oscillating motor 34, a push rod 37 and a spring used for pushing the push rod 37 to abut against the self-reset button switch 36 are arranged in the clamping main body 1, the push rod 37 is connected with a connecting plate, one end of the connecting plate is located in the lifting groove 10, when the lifting mechanism drives the connecting block 9 to ascend, the connecting block 9 abuts against the lower side of the connecting plate and drives the push rod 37 to ascend, and therefore the push rod 9 is separated from the self-reset button switch 36;
when the push rod 37 abuts against the self-reset button switch 36, the loop of the oscillating motor 34 is powered off, the motor switch cannot start the oscillating motor 34, and when the push rod 37 is separated from the self-reset button switch 36, the loop of the oscillating motor 34 is powered on, and the motor switch can control the starting and stopping of the oscillating motor 34;
six weighing cylinders 5 and three groups of six clamping assemblies which are symmetrically arranged are arranged in the sampling box 2;
the analysis device 3 is a pesticide residue detector with the model of HM-NC 10;
the weighing device 6 is a high-precision electronic balance;
the working principle is as follows: when the device is used, a sample bottle 4 is placed into a weighing cylinder 5, a weighing device 6 is reset, a certain amount of chopped samples are placed into the sample bottle 4, then a certain amount of buffering agent is added, a lifting motor 13 is started, the lifting motor drives a screw rod 11 to rotate, the screw rod 11 is gradually screwed into an internal thread hole 14 so as to drive a connecting block 9 to ascend, in the process that the connecting block 9 ascends, a push plate 22 loses the thrust from an arc-shaped bulge 23 and does not abut against a clamping plate 21, the clamping plate 21 clamps the weighing cylinder 5 under the action of a spring, the connecting block 9 drives the weighing cylinder 5 to ascend through a clamping rod 8, when the connecting block 9 ascends to the top of a lifting groove 10, the connecting block 9 abuts against the lower side of the connecting plate so that a mandril 9 is separated from a self-resetting button switch 36, at the moment, the oscillating motor 34 starts to oscillate through a motor switch, the, and (3) lowering the weighing cylinder 5, standing for a period of time, taking out the oscillated sample bottle 4, taking the supernatant, adding other medicaments, and detecting by the analysis device 3 to obtain a result.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (8)
1. A detection device for screening toxic and harmful pesticide residues comprises a workbench, a sampling box arranged on the workbench and an analysis device arranged on the workbench and used for detecting pesticide residues, and is characterized in that the top of the sampling box is provided with an opening, a plurality of weighing cylinders for placing sample bottles, a weighing device for weighing the weight of agricultural product samples placed in the sample bottles, a clamping main body and an oscillating assembly;
a plurality of groups of clamping assemblies for clamping the weighing cylinder are symmetrically arranged on the clamping main body, and each clamping assembly comprises a clamping rod capable of clamping the weighing cylinder and a lifting mechanism for driving the weighing cylinder to lift;
when the lifting mechanism drives the weighing cylinder to move to the highest position, the oscillating assembly can drive the clamping main body to move in the length direction of the workbench;
when the lifting mechanism drives the weighing cylinder to move to the lowest position, the weighing cylinder is positioned on the weighing device and separated from the clamping rod.
2. The detection device for screening toxic and harmful pesticide residues as claimed in claim 1, wherein the sampling box is concave, grooves are formed in side walls of two sides of a concave portion of the sampling box, two ends of the clamping main body are respectively located in the two grooves, a sliding block is fixedly connected to the bottom of the clamping main body, a sliding groove matched with the sliding block is formed in a groove wall of each groove, and the oscillating assembly is located in one of the grooves;
the oscillating assembly comprises an oscillating motor and a crank connecting rod mechanism which are fixedly arranged in the groove, and the oscillating motor drives the clamping main body to reciprocate through the crank connecting rod mechanism.
3. The detection device for screening toxic and harmful pesticide residues according to claim 2, wherein the lifting mechanism comprises a screw rod, a connecting block rotatably connected to the screw rod, and a lifting motor fixedly installed in the sampling box, a lifting groove matched with the connecting block is formed in the clamping body, an internal threaded hole matched with the screw rod is formed in the top of the lifting groove, a transmission block is fixedly connected to the end of an output shaft of the lifting motor, a clamping groove matched with the transmission block is formed in the bottom end of the screw rod, a part of the transmission block is located in the clamping groove, and a abdicating groove for abdicating the transmission block is formed in the clamping groove;
when the screw rod is in a rotating state, the connecting block can move upwards or downwards in the lifting groove, and when the connecting block moves to the top of the lifting groove, the screw rod is separated from an output shaft of the lifting motor.
4. The apparatus as claimed in claim 3, wherein the end of the clamping rod is hinged to two clamping plates, the clamping rod is provided with a spring for pushing the clamping plates to abut against the weighing cylinder, the two sides of the clamping rod are respectively provided with a pushing plate, the pushing plates are slidably disposed on the clamping rod, the clamping body is fixedly connected with an arc-shaped protrusion matched with the pushing plates, and the pushing plates abut against one end of the clamping plates under the action of the arc-shaped protrusion during the descending process of the clamping rod, so that the clamping plates can be separated from the weighing cylinder.
5. The detection device for screening toxic and harmful pesticide residues as claimed in claim 4, wherein the oscillating motor is electrically connected with a power supply through a motor switch and a self-resetting button switch; the motor switch controls the starting and stopping of the oscillating motor, the self-resetting button switch controls the power on and off of a loop of the oscillating motor, a push rod and a spring used for pushing the push rod to abut against the self-resetting button switch are arranged in the clamping main body, the push rod is connected with a connecting plate, one end of the connecting plate is located in the lifting groove, when the lifting mechanism drives the connecting block to ascend, the connecting block abuts against the lower side of the connecting plate and drives the push rod to ascend, and therefore the push rod is separated from the self-resetting button switch;
when the ejector rod abuts against the self-reset button switch, the oscillating motor loop is powered off, the motor switch cannot start the oscillating motor, and when the ejector rod is separated from the self-reset button switch, the oscillating motor loop is powered on, and the motor switch can control the starting and stopping of the oscillating motor.
6. The detecting device for screening toxic and harmful pesticide residues as claimed in claim 1, wherein six weighing cylinders and three groups of six clamping assemblies are symmetrically arranged in the sampling box.
7. The device as claimed in claim 1, wherein the analyzing means is a pesticide residue detector model HM-NC 10.
8. The testing device for screening toxic or harmful pesticide residues as recited in claim 1, wherein the weighing device is a high precision electronic balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388408.XA CN111060656B (en) | 2019-12-30 | 2019-12-30 | Detection apparatus for examination poisonous and harmful pesticide residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388408.XA CN111060656B (en) | 2019-12-30 | 2019-12-30 | Detection apparatus for examination poisonous and harmful pesticide residue |
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| CN111060656A true CN111060656A (en) | 2020-04-24 |
| CN111060656B CN111060656B (en) | 2022-05-20 |
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| CN201911388408.XA Active CN111060656B (en) | 2019-12-30 | 2019-12-30 | Detection apparatus for examination poisonous and harmful pesticide residue |
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| Publication number | Publication date |
|---|---|
| CN111060656B (en) | 2022-05-20 |
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