CN112858598B

CN112858598B - Pesticide residue detector

Info

Publication number: CN112858598B
Application number: CN202110009893.6A
Authority: CN
Inventors: 段云威
Original assignee: Beijing Youxing Keyi Technology Development Co ltd
Current assignee: Beijing Youxing Keyi Technology Development Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2022-10-18
Anticipated expiration: 2041-01-05
Also published as: CN112858598A

Abstract

The invention provides a pesticide residue detector, which comprises: a frame; the flow path structure is arranged on the rack and comprises a pump and a first branch structure communicated with the pump; the first branch structure comprises a first branch, the first branch comprises a first branch section, a first sealing plug, a second sealing plug and a second branch section, the first sealing plug is arranged on the first branch section, the second sealing plug is arranged on the second branch section, the first sealing plug and the second sealing plug have working states in sealing fit with the pressure container, and the first sealing plug and the second sealing plug have taking-out states separated from the pressure container. The technical scheme of the invention effectively solves the problem of low detection efficiency of the pesticide residue detector in the prior art.

Description

Pesticide residue detector

Technical Field

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

Background

With the increasing strength of the country on food safety and environmental protection, a large number of samples of food and environment need to be accurately detected for various toxic and harmful substances, but some toxic and harmful substances cannot be detected under conventional conditions, and specific concentrations of some toxic and harmful substances can be detected only after high-temperature and high-pressure extraction. The existing detector needs to seal the pressure container during detection, and liquid medicine of the pressure container is poured out after reaction is completed, so that time and labor are wasted, and the efficiency is low.

Disclosure of Invention

The invention mainly aims to provide a pesticide residue detector to solve the problem that the pesticide residue detector in the prior art is low in detection efficiency.

In order to achieve the above object, according to the present invention, there is provided an agricultural residue detector, comprising: a frame; the flow path structure is arranged on the rack and comprises a pump and a first branch structure communicated with the pump; the first branch structure comprises a first branch, the first branch comprises a first branch section, a first sealing plug, a second sealing plug and a second branch section, the first sealing plug is arranged on the first branch section, the second sealing plug is arranged on the second branch section, the first sealing plug and the second sealing plug have working states in sealing fit with the pressure container, and the first sealing plug and the second sealing plug have taking-out states separated from the pressure container.

Further, first branch road still includes a plurality of sealing washers, the sealing washer includes the bottom ring seat, first seal lip, second seal lip and ring spring, the first side of first seal lip links to each other with the bottom ring seat, the first side of second seal lip links to each other with the bottom ring seat, the second side of first seal lip and the second side of second seal lip set up relatively and have the opening, form accommodation space between first seal lip and the second seal lip, ring spring is located accommodation space, the outer wall of first seal lip and the outer wall of second seal lip are the arc structure, a plurality of sealing washers set up respectively on first sealing plug and second sealing plug, and the opening is towards pressure vessel.

Furthermore, the flow path structure also comprises a main pipeline, a first one-way electromagnetic valve and a flow path distributor, wherein two ends of the main pipeline are respectively communicated with the outlet of the pump and the main pipe of the flow path distributor, and the first one-way electromagnetic valve is arranged on the main pipeline; the first end of the first branch is connected with the branch of the flow path distributor, the first branch structure further comprises a second one-way electromagnetic valve and an electromagnetic valve, the second one-way electromagnetic valve and the electromagnetic valve are both arranged on the first branch, the second one-way electromagnetic valve is close to the first end of the first branch, the electromagnetic valve is close to the second end of the first branch, and the pressure container is arranged between the first one-way electromagnetic valve and the electromagnetic valve; and the control structure is arranged on the rack and is electrically connected with the first one-way electromagnetic valve, the second one-way electromagnetic valve and the electromagnetic valve so as to control the opening and closing of the first one-way electromagnetic valve, the second one-way electromagnetic valve and the electromagnetic valve.

Furthermore, the first branch structure also comprises a first filter, and the first filter is arranged on the first branch and is positioned between the pressure container and the second one-way electromagnetic valve.

Further, first branch road structure still includes four-way pipe way, pressure sensor, waste liquid discharging branch road and collects the branch road, and four-way pipe way sets up on first branch road, and four-way pipe way's one end links to each other with waste liquid discharging branch road, and the first end of collecting the branch road links to each other with four-way pipe way, and the second end of collecting the branch road is striden and is connect to the second end of first branch road.

Further, the first branch structure further comprises a second filter, and the second filter is arranged between the pressure container and the electromagnetic valve.

Further, the first branch structure further comprises a condensation pipe, and the condensation pipe is arranged on the first branch and is located between the second end of the collection branch and the second filter.

Furthermore, the flow path structure also comprises a multi-way three-way switching valve, the second end of the first branch is communicated with the multi-way three-way switching valve, and other two ways of the multi-way three-way switching valve can be respectively connected with the waste liquid collecting container and the standard collecting container.

Further, the flow path structure further includes a waste liquid flow path connected to the main line between the flow path distributor and the first one-way solenoid valve, and a nitrogen gas flow path provided on the main line between the flow path distributor and the waste liquid flow path.

Further, the first branch structure includes a plurality of first branch structures, and the plurality of first branch structures are respectively connected to the flow path distributor.

By applying the technical scheme of the invention, when extraction is needed, the pressure container is matched with the first sealing plug and the second sealing plug, liquid medicine is injected through the pump, and the liquid medicine is discharged after extraction or reaction is finished, so that the detection efficiency is greatly improved. The technical scheme of the invention effectively solves the problem of low detection efficiency of the pesticide residue detector in the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view showing an example of a flow path structure of a pesticide residue detector according to the present invention;

fig. 2 shows a schematic structural view of a seal ring of the flow path structure of fig. 1.

Wherein the figures include the following reference numerals:

10. a pump; 20. a main pipeline; 30. a first one-way solenoid valve; 40. a flow path distributor; 50. a first branch structure; 51. a first branch; 52. a second one-way solenoid valve; 53. an electromagnetic valve; 54. a pressure vessel; 55. a first filter; 56. a pressure sensor; 57. a waste liquid discharge branch; 58. collecting branches; 59. a second filter; 511. a condenser tube; 512. a first sealing plug; 513. a second sealing plug; 514. a seal ring; 60. a multi-way three-way switching valve; 70. a waste liquid flow path; 80. a nitrogen gas flow path.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

As shown in fig. 1 and fig. 2, the present embodiment provides a pesticide residue detector, which includes: the pump comprises a frame and a flow path structure, wherein the flow path structure is arranged on the frame and comprises a pump 10 and a first branch structure 50 communicated with the pump 10. The first branch structure 50 comprises a first branch 51, the first branch 51 comprises a first branch section, a first sealing plug 512, a second sealing plug 513 and a second branch section, the first branch section is provided with the first sealing plug 512, the second branch section is provided with the second sealing plug 513, the first sealing plug 512 and the second sealing plug 513 have an operating state of being in sealing fit with the pressure container 54, and the first sealing plug 512 and the second sealing plug 513 have a removal state of being separated from the pressure container 54.

By applying the technical scheme of the embodiment, when extraction is needed, the pressure container is matched with the first sealing plug and the second sealing plug, liquid medicine is injected through the pump, and the liquid medicine is discharged after extraction or reaction is finished, so that the detection efficiency is greatly improved. The technical scheme of this embodiment has solved the lower problem of detection efficiency of incomplete detector of farming among the prior art effectively.

The injector comprises: a container box assembly and a robot assembly. The container box assembly is provided with a containing space to contain a pressure-bearing tank (pressure container). The mechanical arm assembly comprises a mechanical arm and a mechanical arm, the mechanical arm is arranged on the mechanical arm, the mechanical arm can drive the mechanical arm to move in a first horizontal direction, a second horizontal direction and a vertical direction, the first horizontal direction is vertical to the second horizontal direction, the vertical direction is vertical to a horizontal plane, the mechanical arm comprises a mounting seat, a plurality of holding blocks, a driving part and a detector, the plurality of holding blocks are movably arranged on the mounting seat, the driving part is connected with the plurality of holding blocks to drive the plurality of holding blocks to have a holding state and a separation state, and the detector is arranged on the mounting seat to detect whether the mechanical arm holds a pressure-bearing tank or not.

When the sample injector is used, the pressure-bearing tank in the box assembly is taken out by the mechanical arm assembly, the plurality of holding blocks are close to each other to realize taking the pressure-bearing tank, the holding blocks are put down the pressure-bearing tank by keeping away from each other, and the detector can detect whether the manipulator holds the pressure-bearing tank, so that the manipulator can take and place the pressure-bearing tank more accurately. The independent setting of injector has made things convenient for transport, use etc. of incomplete detector of farming.

As shown in fig. 1, the mechanical arm of this embodiment includes a fixed arm, a first horizontal moving arm, a first synchronous belt driving structure, a second horizontal moving arm, a second synchronous belt driving structure and a first screw driving structure, the fixed arm is disposed above the container box assembly, an upper surface of the fixed arm is provided with a plurality of parallel first sliding grooves, the first horizontal moving arm is at least partially disposed in the first sliding grooves, the first synchronous belt driving structure drives the first horizontal moving arm to move along the first sliding grooves, a side surface of the first horizontal moving arm is provided with a plurality of parallel second sliding grooves, the second horizontal moving arm is at least partially disposed in the second sliding grooves, the second synchronous belt driving structure drives the second horizontal moving arm to move along the second sliding grooves, and the mounting base is disposed on the first screw driving structure. The cost can be saved to the mode that first horizontal direction and second horizontal direction's removal adopted the hold-in range drive structure, and the setting up of first spout and second spout can guarantee the steady of removal. The vertical direction movement distance is shorter, and the precision can be improved by adopting a screw driving mode.

The sample injector also includes a gas concentrator assembly disposed at least partially on the cartridge assembly. The structure is compact, and a gas concentrator is not required to be arranged independently. Specifically, the gas concentrator subassembly includes trachea and test tube portion of placing, and the test tube portion of placing sets up on the container box subassembly. Above-mentioned structure processing cost is lower, and the gas concentrator subassembly of this embodiment adopts nitrogen gas. The sample injector and the solvent extraction main machine are arranged in a split mode, and the rack, the flow path structure and the control structure all belong to the solvent extraction main machine.

In the technical solution of this embodiment, the flow path structure further includes a main line 20, a first one-way solenoid valve 30 and a flow path distributor 40, two ends of the main line 20 are respectively communicated with an outlet of the pump 10 and a main line of the flow path distributor 40, and the first one-way solenoid valve 30 is disposed on the main line 20; the first end of the first branch 51 is connected to a branch of the flow path distributor 40, the first branch structure 50 further includes a second one-way solenoid valve 52 and a solenoid valve 53, the second one-way solenoid valve 52 and the solenoid valve 53 are both disposed on the first branch 51, the second one-way solenoid valve 52 is close to the first end of the first branch 51, the solenoid valve 53 is close to the second end of the first branch 51, and a pressure vessel 54 is disposed between the first one-way solenoid valve 30 and the solenoid valve 53. And the control structure is arranged on the rack and is electrically connected with the first one-way solenoid valve 30, the second one-way solenoid valve 52 and the solenoid valve 53 so as to control the opening and closing of the first one-way solenoid valve 30, the second one-way solenoid valve 52 and the solenoid valve 53.

It should be noted that, the control structure includes display screen and control unit, and the pump is the plunger pump, and the frame includes the box, and the plunger pump sets up in the bottom of box, and the display screen sets up on the front wall of box, and the display screen is touch display screen, for example adjusts and selects which branch road work, and operating pressure etc. through touch display screen. The control component is positioned in the case and positioned at the rear part of the display screen.

In the solution of this embodiment, the first branch structure further includes a first filter 55, and the first filter is disposed on the first branch and located between the pressure vessel 54 and the second one-way solenoid valve. The first filter is arranged to prevent particulate matter from entering the pressure vessel, which is a pressure-bearing tank assembly as described below.

In the technical scheme of this embodiment, first branch road structure still includes four-way pipe, pressure sensor 56, waste liquid discharging branch road 57 and collects branch road 58, and four-way pipe sets up on first branch road, and four-way pipe's one end links to each other with waste liquid discharging branch road, and the first end of collecting the branch road links to each other with four-way pipe, and the second end of collecting the branch road is striden to connect to the second end of first branch road. Above-mentioned structure has further guaranteed the safety of sending liquid, when pressure sensor detection pressure was higher, can carry out the pressure release through the waste liquid branch road, also can collect the liquid in the pipeline through collecting the branch road in order to be ready for the reuse. A pressure relief valve is arranged on the waste liquid discharge branch, and an electromagnetic valve is arranged on the collecting branch.

In the solution of this embodiment, the first branch structure further includes a second filter 59, and the second filter is disposed between the pressure vessel and the electromagnetic valve. The arrangement of the second filter can prevent particles from entering the pressure vessel during liquid backflow and can also prevent the particles from flowing into the standard collection vessel from the pressure vessel.

In the technical solution of this embodiment, the first branch structure further includes a condensation pipe 511, and the condensation pipe is disposed on the first branch and located between the second end of the collection branch and the second filter. The arrangement of the condensing pipe can avoid the discharge of high-temperature liquid in the pressure container, or the high-temperature liquid hurts people, damages equipment and the like.

In the technical solution of this embodiment, the flow path structure further includes a multi-way three-way switching valve 60, the second end of the first branch is communicated with the multi-way three-way switching valve, and the other two ways of the multi-way three-way switching valve can be respectively connected with the waste liquid collecting container and the standard collecting container. The multi-way three-way switching valve is six ways, each way is provided with three interfaces, one interface is connected with the second end of the first branch, and the other two branches are respectively connected with the waste liquid outlet and the standard liquid outlet, so that the three-way switching valve can be selected according to requirements and is discharged into the waste liquid outlet or the standard liquid outlet.

In the technical solution of this embodiment, the first branch includes a first branch section, a first sealing plug 512, a second sealing plug 513, and a second branch section, the first branch section is provided with the first sealing plug, the second branch section is provided with the second sealing plug, and the first sealing plug and the second sealing plug are respectively and sealably engaged with two ends of the pressure container. Specifically, incomplete detector of farming still includes the detection arm, and first sealing plug is installed on last detection arm, and the second sealing plug is installed under on the detection arm, goes up detection arm and detection arm removal in opposite directions and keeping away from down, when last detection arm and detection arm remove in opposite directions down, with first sealing plug shutoff at pressure vessel's last port, the shutoff of second sealing plug is at pressure vessel's lower port, and liquid is squeezed into pressure vessel through the pump. And after extraction or reaction is finished, discharging the product through a second sealing plug. It should be noted that the outer wall of the first sealing plug is sealed with the inner wall of the pressure container, and the middle of the first sealing plug is provided with a hole. The outer wall of the second sealing plug is sealed with the inner wall of the pressure container, and the middle of the second sealing plug is provided with a hole.

In the technical scheme of this embodiment, first branch still includes a plurality of sealing washers 514, the sealing washer includes the bottom ring seat, first seal lip, second seal lip and ring spring, the first side of first seal lip links to each other with the bottom ring seat, the first side of second seal lip links to each other with the bottom ring seat, the second side of first seal lip and the second side of second seal lip set up relatively and have the opening, form accommodation space between first seal lip and the second seal lip, ring spring is located accommodation space, the outer wall of first seal lip and the outer wall of second seal lip are the arc structure, a plurality of sealing washers set up respectively on first sealing plug and the second sealing plug, and the opening is towards pressure vessel. The sealing effect of the structure is good, and the annular spring, the first sealing lip and the second sealing lip of the sealing ring can provide elastic force. The annular ring of the sealing ring extends helically along the axis of the annulus until the sealing ring is of a closed annular shape.

In the solution of the present embodiment, the flow path structure further includes a waste liquid flow path 70 and a nitrogen gas flow path 80, the waste liquid flow path is connected to the main pipe between the flow path distributor and the first one-way solenoid valve, and the nitrogen gas flow path is provided on the main pipe between the flow path distributor and the waste liquid flow path. The waste liquid flow path can discharge waste liquid on the one hand and can exhaust gas on the other hand. The nitrogen gas flow path may purge the liquid in the line or pressure vessel.

In the technical solution of this embodiment, the first branch structure includes a plurality of first branch structures, and the plurality of first branch structures are respectively connected to the flow path distributor. The above structure improves the detection efficiency, and specifically, in the technical scheme of this embodiment, the plurality of first branch structures are six. Of course, there may also be a second bypass structure, which may be the same as the first bypass structure.

The first one-way solenoid valve is the same as the second one-way solenoid valve in structure, and the first one-way solenoid valve includes: a solenoid coil assembly and a valve body assembly. The electromagnetic coil assembly comprises a shell, a coil and a movable iron core, wherein the coil is arranged in the shell, and the movable iron core is movably arranged in the coil. The valve body assembly comprises a valve body, a one-way valve core and a stop valve core, one side of the valve body is connected with the shell, the valve body comprises a valve body and a valve cover, one side of the valve body, far away from the shell, is provided with an installation groove, the valve cover is installed at the installation groove, a fluid channel is formed in the valve body and flows through the installation groove, the fluid channel comprises an inlet and an outlet, the one-way valve core is installed in the installation groove, the stop valve core is located on the fluid channel between the installation groove and the inlet, and the stop valve core is connected with the movable iron core so as to enable the movable iron core to drive the stop valve core to be located at a stop position and an open position.

By applying the technical scheme of the embodiment, the solenoid coil assembly controls the cut-off valve core to be in the cut-off position and the open position, so that the one-way solenoid valve can be opened and closed, for example: when the cut-off valve core is in the open position, the inlet pressure is high, the one-way electromagnetic valve can be pushed open, one-way circulation of the one-way electromagnetic valve is further realized, and when the cut-off valve core is in the cut-off position, the inlet pressure is high, and the opening of the one-way electromagnetic valve cannot be realized. When the outlet pressure is large, the one-way solenoid valve cannot be opened according to the characteristics of the one-way valve element. Therefore, the one-way electromagnetic valve not only can realize the automatic control of the valve, but also can play a role in one-way circulation. The technical scheme of this embodiment has solved the problem that the check valve among the prior art can not realize automatic control effectively.

In the technical scheme of this embodiment, the valve body subassembly still includes the spring, and the spring is supported and is propped up between one-way valve core and valve gap, and one side that one-way valve core is kept away from the valve gap is linked together with fluid passage's import. The structure is compact, and the processing cost is low.

In the technical scheme of this embodiment, the mounting groove includes valve gap groove section and check valve groove section in proper order to the one side of being close to the casing by keeping away from one side of casing, the check valve groove section includes the first check valve groove section of being close to valve gap groove section and the second check valve groove section of keeping away from valve gap groove section, the step has between first check valve groove section and the second check valve groove section, the diameter of first check valve groove section is greater than the diameter of second check valve groove section, have the opening that is linked together with the import in the second check valve groove section, have the opening that is linked together with the export on the step face of step. The structure is compact, and the backflow of the medium in the one-way valve is avoided.

In the technical scheme of this embodiment, the internal wall face of second check valve recess section and the outer wall face of check valve core can seal the cooperation, and the opening of second check valve recess section is located the one side that keeps away from the valve gap of sealed cooperation internal wall face. The structure is compact, and it should be noted that the inner wall surface of the second check valve groove section is matched with the outer wall surface of the check valve core in a conical surface manner, so that the service cycle of the check electromagnetic valve is longer.

In the technical scheme of this embodiment, the diameter of valve gap groove section is greater than the diameter of check valve groove section, and the bottom surface of valve gap groove section has the screw hole, and the valve gap passes through the screw and links to each other with the valve body. The structure is convenient to inspect and maintain, and parts and the like are replaced.

In the technical scheme of this embodiment, the valve gap is provided with the spacing collar towards one side of casing, and the one end of spring sets up at least partially in the spacing collar. Therefore, the problems that the spring is not installed in place or the spring is pulled out can be prevented. The spacing ring is a convex ring protruding out of the plane of the valve cover.

In the technical scheme of this embodiment, import and export are set up respectively on the side between the casing of valve body and valve gap. The structure is convenient to set and low in processing cost.

In the technical solution of this embodiment, the inlet and the outlet are respectively disposed on two opposite side surfaces. The processing cost is low, the mounting groove is circular, and the circle center of the circular shape is concentric with the valve body.

In the technical scheme of this embodiment, still be provided with flow direction indicator on the valve body. This can effectively avoid installation errors or the inability to know the media flow direction during use. It should be noted that the indication mark may be an arrow.

The pressure-bearing tank assembly includes: jar body main part, first filter house, first fixed part, second filter house and second fixed part. The tank body main body is of a cylindrical structure, a first opening is formed in the first end of the tank body main body, a second opening is formed in the second end of the tank body main body, a first step is formed in the inner wall of the first opening, and a second step is formed in the second opening. The first filtering part is arranged at the first end of the tank body main body. First fixed part sets up the first end at jar body main part, and first filter part presss from both sides and establishes between first step and the first fixed part. The second filter part is arranged at the second end of the tank body. The second fixed part is arranged at the second end of the tank body, and the second filtering part is clamped between the second step and the second fixed part. When the plunger pump injects liquid into the tank body main body, the liquid path is provided with one-way solenoid valves (a first one-way solenoid valve and a second one-way solenoid valve), and when the tank body main body discharges the liquid, the liquid path is also provided with the one-way solenoid valve. The plunger pump is connected with the main pipeline, the main pipeline is connected with six branch pipelines, the six branch pipelines are respectively provided with one-way electromagnetic valves, and each one-way electromagnetic valve is independently controlled.

The incomplete detector of farming of this embodiment still includes pressure container frame, pressure container frame has six accommodation space, therefore, six pressure containers can be placed to pressure container frame at most, be provided with walking motor and threaded rod in the frame, the threaded rod links to each other with the walking motor, be provided with the nut on the pressure container frame, threaded rod and nut cooperation, the removal that pressure container frame was held is realized in the rotation of threaded rod, it is required to explain that, pressure container frame and frame are provided with the guide rail groove and the guide rail of mutually supporting, the guide rail sets up the both sides at pressure container frame, make the removal of pressure container frame more steady like this. The walking motor can convey the pressure container frame to the outside of the rack, and the pressure container can be taken out or put in by manpower or a mechanical arm. When the walking motor can move the pressure container frame into the frame, the first sealing plug moves downwards, and the second sealing plug moves upwards, so that the first sealing plug, the pressure container and the second sealing plug are mutually matched into a sealed passage.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that, for example, embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pesticide residue detector is characterized by comprising:

a frame;

a flow path structure provided on the frame, the flow path structure including a pump (10) and a first branch structure (50) communicating with the pump (10);

the first branch structure (50) comprises a first branch (51), the first branch (51) comprises a first branch part, a first sealing plug (512), a second sealing plug (513) and a second branch part, the first branch part is provided with the first sealing plug (512), the second branch part is provided with the second sealing plug (513), the first sealing plug (512) and the second sealing plug (513) have working states in sealing fit with the pressure container (54), and the first sealing plug (512) and the second sealing plug (513) have taking-out states separated from the pressure container (54);

the flow path structure further comprises a main pipeline (20), a first one-way electromagnetic valve (30) and a flow path distributor (40), two ends of the main pipeline (20) are respectively communicated with an outlet of the pump (10) and a main pipe of the flow path distributor (40), and the first one-way electromagnetic valve (30) is arranged on the main pipeline (20); the first end of the first branch (51) is connected with a branch of the flow path distributor (40), the first branch structure (50) further comprises a second one-way solenoid valve (52) and a solenoid valve (53), the second one-way solenoid valve (52) and the solenoid valve (53) are both arranged on the first branch (51), the second one-way solenoid valve (52) is close to the first end of the first branch (51), the solenoid valve (53) is close to the second end of the first branch (51), and the pressure container (54) is arranged between the first one-way solenoid valve (30) and the solenoid valve (53);

the control structure is arranged on the rack and is electrically connected with the first one-way solenoid valve (30), the second one-way solenoid valve (52) and the solenoid valve (53) so as to control the opening and closing of the first one-way solenoid valve (30), the second one-way solenoid valve (52) and the solenoid valve (53);

the first branch structure (50) further comprises a four-way pipeline, a pressure sensor (56), a waste liquid discharge branch (57) and a collection branch (58), the four-way pipeline is arranged on the first branch (51), one end of the four-way pipeline is connected with the waste liquid discharge branch (57), the first end of the collection branch (58) is connected with the four-way pipeline, and the second end of the collection branch (58) is connected to the second end of the first branch (51) in a cross-connection mode;

an injector, the injector comprising: the container box assembly is provided with a containing space for containing a pressure container (54), the mechanical arm assembly comprises a mechanical arm and a mechanical arm, the mechanical arm is arranged on the mechanical arm and can drive the mechanical arm to move in a first horizontal direction, a second horizontal direction and a vertical direction, the first horizontal direction is vertical to the second horizontal direction, the vertical direction is vertical to the horizontal plane, the mechanical arm comprises a mounting seat, a plurality of holding blocks, a driving part and a detector, the plurality of holding blocks are movably mounted on the mounting seat, the driving part is connected with the plurality of holding blocks to drive the plurality of holding blocks to have a holding state and a separation state, and the detector is mounted on the mounting seat to detect whether the mechanical arm holds the pressure container (54);

when the sample injector is used, the mechanical arm assembly takes out the pressure container (54) in the containing box assembly, the plurality of holding blocks are close to each other to take out the pressure container (54), the plurality of holding blocks are far away from each other to put down the pressure container (54), and the detector can detect whether the mechanical arm holds the pressure container (54);

the arm includes fixed arm, first horizontal migration arm, first synchronous belt drive structure, second horizontal migration arm, second synchronous belt drive structure and first screw drive structure, the fixed arm sets up the top of container box subassembly, the upper surface of fixed arm is provided with the first spout of a plurality of parallels, first horizontal migration arm sets up in first spout at least partially, first synchronous belt drive structure drive first horizontal migration arm removes along first spout, the side of first horizontal arm is provided with the second spout of a plurality of parallels, second horizontal migration arm sets up in the second spout at least partially, second synchronous belt drive structure drive second horizontal migration arm removes along the second spout, the mount pad sets up on first screw drive structure.

2. The pesticide residue detector according to claim 1, wherein the first branch (51) further comprises a plurality of sealing rings (514), the sealing rings (514) comprise a bottom ring seat, a first sealing lip, a second sealing lip and an annular spring, the first side edge of the first sealing lip is connected with the bottom ring seat, the first side edge of the second sealing lip is connected with the bottom ring seat, the second side edge of the first sealing lip and the second side edge of the second sealing lip are oppositely arranged and have an opening, an accommodating space is formed between the first sealing lip and the second sealing lip, the annular spring is located in the accommodating space, the outer wall of the first sealing lip and the outer wall of the second sealing lip are of an arc-shaped structure, and the plurality of sealing rings (514) are respectively arranged on the first sealing plug and the second sealing plug, and the opening faces the pressure container (54).

3. The pesticide residue detector according to claim 1, characterized in that the first branch structure (50) further comprises a first filter (55), the first filter (55) being arranged on the first branch (51) and between the pressure vessel (54) and the second one-way solenoid valve (52).

4. The pesticide residue detector according to claim 3, characterized in that the first branch structure (50) further comprises a second filter (59), the second filter (59) being arranged between the pressure vessel (54) and the solenoid valve (53).

5. The pesticide residue detector according to claim 4, characterized in that the first branch structure (50) further comprises a condensation duct (511), the condensation duct (511) being arranged on the first branch (51) and being located between the second end of the collecting branch (58) and the second filter (59).

6. The pesticide residue detector as claimed in claim 5, wherein the flow path structure further comprises a multi-way three-way switching valve (60), the second end of the first branch (51) is communicated with the multi-way three-way switching valve (60), and the other two ways of the multi-way three-way switching valve (60) can be respectively connected with a waste liquid collecting container and a standard collecting container.

7. The pesticide residue detector according to claim 1, wherein the flow path structure further comprises a waste liquid flow path (70) and a nitrogen gas flow path (80), the waste liquid flow path (70) is connected to the main pipeline (20) between the flow path distributor and the first one-way solenoid valve, and the nitrogen gas flow path is provided on the main pipeline (20) between the flow path distributor (40) and the waste liquid flow path (70).

8. The pesticide residue detector according to any one of claims 1 to 7, wherein the first branch structure comprises a plurality of first branch structures, and the plurality of first branch structures are respectively connected with the flow path distributor (40).