CN212904055U - A sample sampling mechanism for pesticide residue detects - Google Patents
A sample sampling mechanism for pesticide residue detects Download PDFInfo
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- CN212904055U CN212904055U CN202021950992.1U CN202021950992U CN212904055U CN 212904055 U CN212904055 U CN 212904055U CN 202021950992 U CN202021950992 U CN 202021950992U CN 212904055 U CN212904055 U CN 212904055U
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Abstract
The utility model discloses a sample sampling mechanism for pesticide residue detects, which comprises a worktable, a mounting bracket, sampling tube and controller, the movably setting of mounting bracket is on the board, be provided with the sample cylinder on the mounting bracket, the sample cylinder is connected with the sampling tube, be provided with sample channel in the sampling tube, the sampling tube lower extreme is provided with the sample connection with sample channel intercommunication, sampling tube upper portion is connected with negative pressure pipeline respectively, malleation pipeline and washing pipeline, negative pressure pipeline is provided with the negative pressure solenoid valve, the malleation pipeline is provided with the malleation solenoid valve, the washing pipeline is provided with the washing solenoid valve, the negative pressure solenoid valve, malleation solenoid valve and washing solenoid valve are connected with the controller respectively, the washing district is provided with the washing shower nozzle that is used for. This a sample sampling mechanism for pesticide residue detects can carry out automatic sampling, automatic laying-out and the self-cleaning of sample liquid, and the sampling efficiency is high, detection efficiency is high and detect the precision height.
Description
Technical Field
The utility model relates to a pesticide detects technical field, concretely relates to sample sampling mechanism for pesticide residue detects.
Background
Pesticide residue refers to the phenomenon that a part of pesticide directly or indirectly remains in grains, vegetables, fruits, livestock products, aquatic products, soil and water after the pesticide is applied in agricultural production. The invention and the use of the pesticide greatly improve the grain yield and promote the agricultural development, however, because of excessive and improper use, the agricultural environment and food safety problems caused by pesticide residues and pollutants thereof are more and more emphasized by people, and the organophosphorus pesticide and the carbamate pesticide are the pesticides with the largest use amount in the present stage in China, so the detection of the organophosphorus pesticide residues becomes very important work.
In the detection process, a proper amount of deionized water is added into a sample and crushed to obtain a sample solution, and then a sample sampling tube is adopted to take out the proper sample solution to enter a detection mechanism for pesticide residue detection. However, the existing sampling method, which usually uses test tubes for sampling, has at least the following disadvantages: 1. the sampling is carried out manually, the volume of the sample solution obtained by each sampling is difficult to unify, the detection precision is influenced, and the workload of operators is increased; 2. need the manual work to wash after the test tube finishes using, get rid of remaining sample solution, still need clear away remaining moisture on the test tube after finishing washing, avoid influencing sample solution when taking a sample next time and lead to the detected data inaccurate, increase operating personnel work burden, and restricted the improvement of sampling efficiency to detection efficiency's improvement has been restricted.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of this application is to provide a sample sampling mechanism for pesticide residue detects, can automatic sampling, self-cleaning, improves sampling efficiency and detection efficiency.
A sample sampling mechanism for pesticide residue detection comprises a machine table, a mounting frame, a sampling tube and a controller, wherein the mounting frame is movably arranged on the machine table, and the machine table is respectively provided with a sampling area, a lofting area and a cleaning area along the moving direction of the mounting rack, the mounting rack is provided with a sampling cylinder, the sampling cylinder is connected with the sampling tube, a sampling channel is arranged in the sampling tube, the lower end of the sampling tube is provided with a sampling port communicated with the sampling channel, the upper part of the sampling tube is respectively connected with a negative pressure pipeline, a positive pressure pipeline and a cleaning pipeline, the negative pressure pipeline is provided with a negative pressure electromagnetic valve, the positive pressure pipeline is provided with a positive pressure electromagnetic valve, the cleaning pipeline is provided with a cleaning electromagnetic valve, the negative pressure electromagnetic valve, the positive pressure electromagnetic valve and the cleaning electromagnetic valve are respectively connected with the controller, and the cleaning area is provided with a cleaning sprayer for cleaning the sampling tube.
In the using process, the sampling cylinder drives the sampling tube to move downwards to extend into a sample box which is positioned in the sampling area and is filled with sample liquid, the controller controls the negative pressure electromagnetic valve to be opened so that the sampling channel is communicated with the negative pressure pipeline, the sample liquid is sucked into the sampling channel, then the negative pressure electromagnetic valve is closed, the sucked sample liquid stays in the sampling channel, the sampling cylinder drives the sampling tube to reset upwards so that the sampling tube leaves the sample box, the mounting frame moves to the sample placing area, the sampling cylinder drives the sampling tube to move downwards to extend into a detection box which is positioned in the sample placing area, the controller controls the positive pressure electromagnetic valve so that the sampling channel is communicated with the positive pressure pipeline, the sucked sample liquid is blown into the detection box, and the positive pressure electromagnetic valve is closed, the sampling cylinder drives the sampling tube to reset upwards, the mounting frame moves to the cleaning area, the controller controls the cleaning electromagnetic valve to be opened, the sampling channel is connected with the cleaning pipeline, the cleaning pipeline inputs cleaning water to the sampling channel for cleaning the sampling channel, meanwhile, the cleaning nozzle sprays water to the outside of the sampling tube for cleaning the outside of the sampling tube, after cleaning is finished, the cleaning electromagnetic valve is closed, the positive pressure electromagnetic valve is opened, the positive pressure pipeline introduces air flow to the sampling channel to remove residual water in the sampling channel, after cleaning is finished, the positive pressure electromagnetic valve is closed, and the mounting frame moves to the sampling area to prepare for next sampling.
This a sample sampling mechanism for pesticide residue detects through mounting bracket, malleation pipeline, negative pressure pipeline and the controller that removes, realizes the automatic sampling and the automatic laying-out of sample liquid to the cooperation is washd the pipeline and is washd the self-cleaning that the shower nozzle realized the sampling tube, and sampling efficiency is high, detection efficiency is high and detect the precision height.
The technical scheme can also be that a slide rail is arranged on the machine table, a slide block matched with the slide rail is arranged on the mounting frame, a moving assembly is further arranged on the machine table, and the moving assembly is connected with the mounting frame and used for driving the mounting frame to move along the slide rail. Wherein, the moving assembly is a moving cylinder.
Another technical scheme can also be, it includes lead screw, screw and moving motor to move the subassembly, wherein the lead screw setting is in on the board, the screw setting is in on the mounting bracket and with the lead screw is mutually supported, moving motor with it rotates is connected and drive to the lead screw.
The technical scheme can also be that the sampling tube is provided with a liquid level sensor for detecting the height of the liquid level in the sampling channel, and the liquid level sensor is connected with the controller. Like this, detect through level sensor the height of sample liquid in the sampling passage combines sampling passage's pipe diameter, can obtain the volume of the sample liquid that is drawn, can accurate control the volume of the sample liquid that is drawn through control positive pressure solenoid valve and negative pressure solenoid valve, is favorable to detecting the improvement of precision.
Further technical scheme can also be, sampling channel includes anterior segment and back end that from bottom to top sets gradually, wherein the pipe diameter of anterior segment is less than the pipe diameter of back end. Like this, because the pipe diameter of anterior segment is less than the pipe diameter of back end is favorable to controlling the absorption speed of sample liquid and the volume of the sample liquid that accurate control was absorbed, is favorable to detecting the improvement of precision.
The further technical scheme can also be that a water tank is arranged below the cleaning area, a recycling pipe is arranged at the bottom of the water tank, and a water pump is arranged on the recycling pipe. Like this, utilize the water tank to retrieve the washing water to realize the reuse of washing water through retrieval and utilization pipe and water pump, be favorable to saving the water resource and save the detection cost.
Drawings
Fig. 1 is a schematic structural diagram of a sample sampling mechanism for pesticide residue detection in an embodiment of the present invention.
FIG. 2 is a schematic view of the structure of the sampling tube.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea claimed in the present invention.
The embodiment discloses a sample sampling mechanism for detecting pesticide residues, which comprises a machine table 1, an installation frame 2, a sampling tube 3 and a controller (not shown in the figure), wherein the installation frame 2 is movably arranged on the machine table 1, the machine table 1 is respectively provided with a sampling area 11, a lofting area 12 and a cleaning area 13 along the moving direction of the installation frame 2, the installation frame 2 is provided with a sampling cylinder 21, the sampling cylinder 21 is connected with the sampling tube 3, a sampling channel 31 is arranged in the sampling tube 3, the lower end of the sampling tube 3 is provided with a sampling port communicated with the sampling channel 31, the upper part of the sampling tube 3 is respectively connected with a negative pressure pipeline 32, a positive pressure pipeline 33 and a cleaning pipeline 34, the negative pressure pipeline 32 is provided with a negative pressure electromagnetic valve 321, the positive pressure pipeline 33 is provided with a positive pressure electromagnetic valve 331, the cleaning pipeline 34 is provided with a cleaning electromagnetic valve 341, the negative pressure electromagnetic valve 321, the positive pressure electromagnetic valve 331 and the cleaning electromagnetic valve 341 are respectively connected with the controller, and the cleaning area 13 is provided with a cleaning nozzle 4 for cleaning the sampling tube 3.
In the using process, the sampling cylinder 21 drives the sampling tube 3 to move downwards and extend into a sample box which is located in the sampling area 11 and is filled with sample liquid, the controller controls the negative pressure electromagnetic valve 321 to be opened so that the sampling channel 31 is communicated with the negative pressure pipeline 32, so that the sample liquid is sucked into the sampling channel 31, then the negative pressure electromagnetic valve 321 is closed, the sucked sample liquid stays in the sampling channel 31, the sampling cylinder 21 drives the sampling tube 3 to reset upwards so that the sampling tube 3 leaves the sample box, the mounting frame 2 moves to the sampling area 12, the sampling cylinder 21 drives the sampling tube 3 to move downwards and extend into a detection box which is located in the sampling area 12, and the controller controls the positive pressure electromagnetic valve 331 so that the sampling channel 31 is communicated with the positive pressure pipeline 33, so that the sucked sample liquid is blown into the detection box, the positive pressure electromagnetic valve 331 is closed, the sampling cylinder 21 drives the sampling tube 3 to reset upwards, the mounting frame 2 moves to the washing zone 13, the controller controls the washing solenoid valve 341 to open, so that the sampling passage 31 is connected with the washing pipe 34, the wash pipe 34 inputs wash water to the sampling channel 31 for washing the sampling channel 31, meanwhile, the cleaning nozzle 4 sprays water to the outside of the sampling tube 3 to clean the outside of the sampling tube 3, after the washing is completed, the washing solenoid valve 341 is closed, the positive pressure solenoid valve 331 is opened, the positive pressure pipeline 33 introduces airflow into the sampling tube 3 to remove the residual moisture in the sampling channel 31, after the removal is finished, the positive pressure solenoid valve 331 is closed and the mounting frame 2 is moved to the sampling area 11 to start the next sampling.
This a sample sampling mechanism for pesticide residue detects through mounting bracket 2, malleation pipeline 33, negative pressure pipeline 32 and the controller that removes, realizes the automatic sampling and the automatic laying-out of sample liquid to the cooperation is washd pipeline 34 and is washd shower nozzle 4 and realize the self-cleaning of sampling tube 3, and sampling efficiency is high, detection efficiency is high and detect the precision height.
Specifically, be provided with slide rail 22 on the board 1, be provided with on the mounting bracket 2 with slide rail 22 complex slider 23, still be provided with the removal subassembly on the board 1, the removal subassembly with mounting bracket 2 is connected and is used for driving mounting bracket 2 is followed slide rail 22 removes. Wherein, the removal subassembly includes lead screw 24, screw 25 and moving motor 27, wherein lead screw 24 sets up on board 1, screw 25 sets up on the mounting bracket 2 and with lead screw 24 mutually supports, moving motor 27 with lead screw 24 is connected and drives its rotation.
Specifically, the sampling tube 3 is provided with a liquid level sensor 5 for detecting the height of the liquid level in the sampling channel 31, and the liquid level sensor 5 is connected with the controller. Like this, detect through level sensor 5 the height of sample liquid in the sampling channel 31 combines the pipe diameter of sampling channel 31, can obtain the volume of the sample liquid that is absorb, can accurate control the volume of the sample liquid that is absorb through control positive pressure solenoid valve 331 and negative pressure solenoid valve 321, is favorable to detecting the improvement of precision.
Specifically, the sampling channel 31 comprises a front section 311 and a rear section 312 which are sequentially arranged from bottom to top, wherein the pipe diameter of the front section 311 is smaller than that of the rear section 312. Thus, the pipe diameter of the front section 311 is smaller than that of the rear section 312, so that the suction speed of the sample liquid can be controlled, the volume of the sucked sample liquid can be controlled accurately, and the detection precision can be improved.
Specifically, a water tank 41 is arranged below the cleaning area 13, a recycling pipe 42 is arranged at the bottom of the water tank 41, and a water pump 43 is arranged on the recycling pipe 42. Thus, the water tank 41 is used for recycling the cleaning water, and the reuse of the cleaning water is realized through the reuse pipe 42 and the water pump 43, which is beneficial to saving water resources and detection cost.
The above is only the concrete embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the patent protection scope of the present invention.
Claims (7)
1. A sample sampling mechanism for pesticide residue detection is characterized by comprising a machine table, a mounting frame, a sampling tube and a controller, wherein the mounting frame is movably arranged on the machine table, the machine table is respectively provided with a sampling area, a lofting area and a cleaning area along the moving direction of the mounting frame, the mounting frame is provided with a sampling cylinder, the sampling cylinder is connected with the sampling tube, a sampling channel is arranged in the sampling tube, the lower end of the sampling tube is provided with a sampling port communicated with the sampling channel, the upper part of the sampling tube is respectively connected with a negative pressure pipeline, a positive pressure pipeline and a cleaning pipeline, the negative pressure pipeline is provided with a negative pressure electromagnetic valve, the positive pressure pipeline is provided with a positive pressure electromagnetic valve, the cleaning pipeline is provided with a cleaning electromagnetic valve, and the negative pressure electromagnetic valve, the positive pressure electromagnetic valve and the cleaning electromagnetic valve are respectively connected, the cleaning area is provided with a cleaning spray head for cleaning the sampling tube.
2. The sampling mechanism for pesticide residue detection as claimed in claim 1, wherein the machine platform is provided with a slide rail, the mounting rack is provided with a slide block matched with the slide rail, the machine platform is further provided with a moving assembly, and the moving assembly is connected with the mounting rack and used for driving the mounting rack to move along the slide rail.
3. The sampling mechanism for pesticide residue detection as recited in claim 2, wherein the moving component is a moving cylinder, and the moving cylinder is connected with the controller.
4. The sampling mechanism for pesticide residue detection as claimed in claim 2, wherein the moving assembly comprises a screw rod, a nut and a moving motor, wherein the screw rod is disposed on the machine platform, the nut is disposed on the mounting rack and is matched with the screw rod, the moving motor is connected with the screw rod and drives the screw rod to rotate, and the moving motor is connected with the controller.
5. The sampling mechanism for pesticide residue detection as recited in claim 1, wherein a liquid level sensor is disposed in the sampling tube for detecting the liquid level in the sampling channel, and the liquid level sensor is connected to the controller.
6. The sampling mechanism for pesticide residue detection as recited in claim 1, wherein the sampling channel comprises a front section and a rear section arranged from bottom to top in sequence, wherein the pipe diameter of the front section is smaller than that of the rear section.
7. The sampling mechanism for pesticide residue detection as recited in claim 1, wherein a water tank is disposed below the washing area, a recycling pipe is disposed at the bottom of the water tank, and a water pump is disposed in the recycling pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021950992.1U CN212904055U (en) | 2020-09-09 | 2020-09-09 | A sample sampling mechanism for pesticide residue detects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021950992.1U CN212904055U (en) | 2020-09-09 | 2020-09-09 | A sample sampling mechanism for pesticide residue detects |
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| CN212904055U true CN212904055U (en) | 2021-04-06 |
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| CN202021950992.1U Active CN212904055U (en) | 2020-09-09 | 2020-09-09 | A sample sampling mechanism for pesticide residue detects |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858198A (en) * | 2021-01-16 | 2021-05-28 | 上海源豪检测技术有限公司 | Automatic spectrophotometer |
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2020
- 2020-09-09 CN CN202021950992.1U patent/CN212904055U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858198A (en) * | 2021-01-16 | 2021-05-28 | 上海源豪检测技术有限公司 | Automatic spectrophotometer |
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