Pneumatic conveying device

Abstract

The invention discloses a pneumatic conveying device which solves the technical problems that in the prior art, when a rabbit device conveys a sample box, a plurality of splitters need to be controlled, and the control process is complex. Comprising an irradiation tube, a waste tank, a first circuit changer, a second circuit changer, a sample injector, a pneumatic device, a controller and a plurality of task devices, the output end of the sample injector is respectively connected with the input end of the first circuit changer and the input end of the second circuit changer, the output end of the first circuit changer is simultaneously connected with the irradiation tube and the waste tank, and the output end of the second circuit changer is respectively connected with a plurality of task devices; the output end of the pneumatic device is connected with the irradiation tube, the waste tank and the plurality of task devices; the controller is electrically connected with the first circuit changer, the second circuit changer, the sample injector and the pneumatic device respectively; the pneumatic device is controlled by the controller, so that the pneumatic device forms conveying airflow in the set conveying route, and the sample box is pushed by the conveying airflow to reach a destination along the conveying route.

Description

Technical Field

[0001] The invention relates to a pneumatic conveying device. Background Art

[0002] Irradiation technology uses ionizing radiation sources such as radioactive isotopes, electron beams, gamma rays, neutrons, etc. produced by reactors or accelerators to irradiate matter, causing ionization, excitation and other effects, thereby changing the physical, chemical or biological properties of the matter.

[0003] At present, when performing tasks such as irradiation, storage, and detection on samples, the samples are loaded into sample boxes and placed in a rabbit running device (i.e., a pneumatic conveying device), and the samples are transported by the rabbit running device. For example, a patent with application number CN201611029830.2 and name "A Neutron Activation Analysis Rabbit Running Device" discloses the transportation of sample boxes, but a large number of switchers are provided in the patent. When transporting sample boxes in the rabbit running device, multiple switchers need to be controlled, and the control process is relatively complicated. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that a plurality of splitters need to be controlled when a running rabbit device transports a sample box in the prior art, and the control process is relatively complicated, and to provide a pneumatic transport device.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A pneumatic conveying device, which is special in that it includes an irradiation tube, a waste tank, a first circuit changer, a second circuit changer, an injector, a pneumatic device, a controller and a plurality of task devices;

[0007] The output end of the sampler is connected to the input end of the first converter and the input end of the second converter respectively, the output end of the first converter is connected to the irradiation tube and the waste tank at the same time, and the output end of the second converter is connected to a plurality of task devices respectively;

[0008] The output ends of the pneumatic device are respectively connected to the irradiation tube, the waste tank and a plurality of task devices;

[0009] The controller is electrically connected to the first circuit converter, the second circuit converter, the sample injector and the pneumatic device respectively.

[0010] Further, the pneumatic device includes an air intake assembly, a vacuum assembly and an air circuit control assembly;

[0011] The air intake assembly is electrically connected to the controller, the input end of the air intake assembly is connected to the outside air, and the output end is connected to the irradiation tube, the waste tank, and multiple task devices, and is used to deliver airflow to the irradiation tube or the waste tank or one of the task devices, and input the delivery result to the controller;

[0012] The vacuum component is electrically connected to the controller, the output end of the vacuum component is connected to the outside air, and the input end is simultaneously connected to the irradiation tube, the waste tank, and multiple task devices, so as to provide negative pressure to the irradiation tube or the waste tank or one of the task devices, and input the negative pressure formation parameters into the controller;

[0013] The gas circuit control component is electrically connected to the controller, the air intake component, and the vacuum component to receive control instructions from the controller, and control the connection or disconnection of the air intake component with the irradiation tube, the waste tank, and multiple task devices, and at the same time control the connection or disconnection of the vacuum component with the irradiation tube, the waste tank, and multiple task devices.

[0014] Further, the air intake assembly includes m air intake manifolds, wherein m ≥ 1, the m air intake manifolds are all connected to the air intake pipeline, each of the air intake manifolds is respectively connected to a plurality of air distribution pipes a, each air distribution pipe a is provided with a first vacuum baffle valve, both ends of the irradiation tube, one end of the waste tank close to the first circuit changer, and both ends of the plurality of task devices or one end close to the second circuit circulator are respectively connected to the air distribution pipe a or the vacuum assembly; each of the first vacuum baffle valves is connected to the air circuit control assembly;

[0015] The air intake pipeline is also connected with a proportional regulating valve and a first flow meter, and the proportional regulating valve and the first flow meter are electrically connected with a controller.

[0016] Furthermore, the vacuum assembly includes n vacuum gas collecting pipes, wherein n≥1, the n vacuum gas collecting pipes are all connected to one end of the negative pressure pipeline, and each of the vacuum gas collecting pipes is respectively connected to a plurality of gas distribution pipes b.

[0017] Each gas distribution pipe b is provided with a second vacuum baffle valve; each of the second vacuum baffle valves is connected to the gas circuit control component;

[0018] Both ends of the irradiation tube, one end of the waste tank close to the first circuit converter, and both ends of the plurality of task devices or one end close to the second circuit converter are connected to the gas distribution pipe a or the gas distribution pipe b respectively;

[0019] The other end of the negative pressure pipeline is connected to a vacuum tank and a vacuum pump in sequence. The negative pressure pipeline is also connected to a second flow meter, and the second flow meter is electrically connected to a controller.

[0020] Further, the plurality of task devices include a measuring tube, a receiver, and a multi-sample storage device respectively connected to the output end of the second converter;

[0021] The two ends of the measuring tube are respectively connected to the gas distribution pipe a or the gas distribution pipe b;

[0022] One end of the receiver close to the second converter is connected to the gas distribution pipe a or the gas distribution pipe b;

[0023] The two ends of the multi-sample storage are respectively connected to the gas distribution pipe a or the gas distribution pipe b.

[0024] Furthermore, the first vacuum baffle valve and the second vacuum baffle valve are both three-position five-way solenoid valves.

[0025] Further, the gas circuit control assembly includes an air compressor, the air compressor is connected to a gas storage tank via a gas pipeline, and the gas storage tank is connected to two gas circuit distributors via a gas pipeline;

[0026] A plurality of first solenoid valves are connected to one of the gas path distributors, and each of the first solenoid valves is correspondingly connected to a first vacuum baffle valve;

[0027] Another gas path distributor is connected to a plurality of second solenoid valves, and each of the second solenoid valves is correspondingly connected to a second vacuum baffle valve;

[0028] The plurality of first solenoid valves and the plurality of second solenoid valves are all electrically connected to the controller.

[0029] Furthermore, a pneumatic two-way fitting is connected to the gas pipeline between the gas storage tank and the two gas distributors.

[0030] Furthermore, the sample injector, the input and output ends of the first converter, the input and output ends of the second converter, one end of the output end of the multiple task devices close to the second converter, the input end of the irradiation tube, and the input end of the waste tank are all connected to detection sensors for sample box detection, and each of the detection sensors is electrically connected to the controller.

[0031] Further, the controller includes a local control terminal, a remote control terminal and a programmable logic controller;

[0032] The local control terminal and the remote control terminal are both electrically connected to the programmable logic controller, and the local control terminal and the remote control terminal are both used to send control signals to the programmable logic controller;

[0033] The programmable logic controller is electrically connected to the first circuit converter, the second circuit converter, the sample injector and the pneumatic device respectively.

[0034] Beneficial effects of the present invention:

[0035] The invention discloses a pneumatic conveying device. The pneumatic device is controlled by a controller so that the pneumatic device forms a conveying airflow in a set conveying route. The sample box reaches a destination along the conveying route under the push of the conveying airflow.

[0036] The present invention provides a pneumatic conveying device. A controller in the pneumatic device can change the conveying route by controlling a first converter and a second converter. A conveying airflow is formed in the conveying route by controlling the pneumatic device. A small number of converters are required, and the control process is simple.

[0037] The invention discloses a pneumatic conveying device, which can provide negative pressure for an irradiation tube, a waste tank and a plurality of task devices through the pneumatic device, so as to promote the movement of sample boxes in the irradiation tube, the waste tank and the plurality of task devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of an embodiment of a pneumatic conveying device of the present invention (the pneumatic device part is omitted);

[0039] Figure 2 It is a structural schematic diagram of an embodiment of a pneumatic conveying device of the present invention;

[0040] Figure 3 is a structural schematic diagram of a pneumatic device in an embodiment of a pneumatic conveying device of the present invention;

[0041] Figure 4 It is a structural schematic diagram of an air path control component in an embodiment of a pneumatic conveying device of the present invention;

[0042] Figure 5 It is a schematic diagram of the connection relationship of the controller in an embodiment of a pneumatic conveying device of the present invention.

[0043] In the figure, 1-irradiation tube; 2-waste tank; 3-first circuit changer; 4-second circuit changer; 5-injector; 6-pneumatic device, 61-air intake assembly, 611-air intake manifold, 612-air intake pipeline, 613-first vacuum baffle valve, 614-proportional regulating valve, 615-first flow meter, 62-vacuum assembly, 621-vacuum manifold, 622-vacuum pump, 623-vacuum tank, 624-second vacuum baffle valve, 625-second flow meter , 63-air circuit control assembly, 631-air compressor, 632-air storage tank, 633-first solenoid valve, 634-second solenoid valve, 635-air circuit distributor, 636-pneumatic two-piece; 7-controller, 701-local control terminal, 702-remote control terminal, 703-programmable logic controller; 8-task device, 801-measuring tube, 802-receiver, 803-multi-sample storage; 9-detection sensor, 10-irradiation pit. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] This embodiment provides a pneumatic conveying device, such as Figure 1 and Figure 2 As shown, it includes an irradiation tube 1, a waste tank 2, a first switch 3, a second switch 4, an injector 5, a pneumatic device 6, a controller 7 and a plurality of task devices 8.

[0046] The irradiation tube 1 is arranged in the irradiation pit 10 of the reactor. Figure 2 When it is necessary to perform irradiation on the sample, the sample box loaded with the sample is transported into the irradiation tube 1 .

[0047] Waste tank 2 is used to place sample boxes that have completed tasks such as irradiation and testing.

[0048] The first circuit converter 3 has an input end and multiple output ends. The input end of the first circuit converter 3 is connected to one of the output ends; the multiple output ends are respectively connected to the irradiation tube 1 and the waste tank 2. The first circuit converter 3 is electrically connected to the controller 7, and can control one of the output ends to be connected to the input end under the control of the controller 7, so that the irradiation tube 1 or the waste tank 2 is connected to the conveying pipeline.

[0049] The second switch 4 has an input end and multiple output ends, the input end of the second switch 4 is connected to one of the output ends; the multiple output ends are connected to multiple task devices 8 one by one; the second switch 4 is electrically connected to the controller 7, and can control one of the output ends to be connected to the input end under the control of the controller 7, so that one of the task devices 8 is connected to the transmission pipeline.

[0050] The two ends of the sample injector 5 are connected to the input end and the input end respectively. The sample injector 5 is electrically connected to the controller 7, and can place the sample box in the delivery pipeline under the control of the controller 7. In addition, the sample box delivered from the input end can reach the input end through the sample injector 5, and similarly, the sample box delivered from the input end can reach the input end through the sample injector 5.

[0051] The pneumatic device 6 is connected to the irradiation tube 1, the waste tank 2 and the plurality of task devices 8, and is arranged between the irradiation tube 1 and the task device 8, or between the waste tank 2 and the task device 8 to form a conveying airflow. The pneumatic device 6 is electrically connected to the controller 7, and can form a conveying airflow in the arranged conveying pipeline under the control of the controller 7, so that the sample box moves in the arranged conveying pipeline.

[0052] The controller 7 is electrically connected to the sample injector 5 , the pneumatic device 6 , the first circuit changer 3 and the second circuit changer 4 , and is used to control the sample injector 5 , the pneumatic device 6 , the first circuit changer 3 and the second circuit changer 4 .

[0053] The plurality of task devices 8 include a measuring tube 801 , a receiver 802 and a plurality of sample storages 803 .

[0054] When the pneumatic conveying device is working, the controller 7 can change the conveying route by controlling the first converter 3 and the second converter 4, and form a conveying airflow in the conveying route by controlling the pneumatic device 6. The number of converters required is small and the control process is simple.

[0055] This embodiment provides a specific structure of the pneumatic device 6. Figure 3 . The pneumatic device 6 includes an air intake component 61, a vacuum component 62 and an air circuit control component 63. The air intake component 61 is communicated with the outside, and is connected to the irradiation tube 1 and multiple task devices 8, for conveying airflow to the outside. The vacuum component 62 is connected to the irradiation tube 1, the waste tank 2 and multiple task devices 8, for forming a negative pressure. The air circuit control component 63 is electrically connected to the controller 7, and is connected to the air intake component 61 and the vacuum component 62 to control the connection and disconnection of the air intake component 61 and the irradiation tube 1, the waste tank 2, and the task device 8, and the connection and disconnection of the vacuum component 62 and the irradiation tube 1, the waste tank 2 and the task device 8.

[0056] After the controller 7 completes the setting of the delivery pipeline for conveying the sample box by controlling the first circuit changer 3 and the second circuit changer 4, the air circuit control component 63 can control the vacuum component 62 to form a negative pressure at the end point of the delivery pipeline, and the air circuit control component 63 can control the air intake component 61 to convey air into the delivery pipeline at the starting point of the delivery pipeline to push the sample box in the delivery pipeline to move to the destination.

[0057] When the sample box needs to be transported to the irradiation tube 1 for irradiation, the controller 7 controls the output end of the first circuit changer 3 connected to the irradiation tube 1 to be connected to the input end, and controls the second circuit changer 4 to be connected to any output end to the input end, so as to form a conveying pipeline for conveying the sample box to the irradiation tube 1; the controller 7 controls the vacuum component 62 to be connected to the irradiation tube 1 through the air circuit control component 63, so as to form a negative pressure at the irradiation tube 1; the controller 7 controls the air intake component 61 to be connected to the task device 8 connected to the input end through the air circuit control component 63, so that the conveying airflow of the air intake component 61 passes through the second circuit changer 4, the sample injector 5 and the first circuit changer 3 in sequence, and finally conveys the sample box to the irradiation tube 1.

[0058] Continue to refer to Figure 3The air intake assembly 61 includes at least one air intake manifold 611, an air intake pipeline 612, and a plurality of first vacuum baffle valves 613. The plurality of first vacuum baffle valves 613 are installed on the air intake manifold 611, and the plurality of first vacuum baffle valves 613 are connected to the air circuit control assembly 63, and are used to be opened and closed under the control of the air circuit control assembly 63. One end of the air intake pipeline 612 is connected to at least one air intake manifold 611, and the other end of the air intake pipeline 612 is connected to the outside air.

[0059] Figure 3 The air intake assembly 61 includes three air intake collecting pipes 611, which are connected through pipelines, and each air intake collecting pipe 611 is connected to multiple air distribution pipes a.

[0060] Multiple gas distribution pipes a connected to the first vacuum baffle valve 613 are respectively connected to the two ends of multiple task devices 8, the two ends of the irradiation tube 1 and one end of the waste tank 2 close to the first switch 3. When the first vacuum baffle valve 613 is controlled to open by the gas circuit control component 63, the gas in the intake manifold 611 enters the corresponding intake interface.

[0061] In addition, the intake assembly 61 also includes a proportional control valve 614 and a first flow meter 615 arranged in the intake pipeline 612; the proportional control valve 614 is electrically connected to the controller 7, and is used to adjust the size of the intake air volume under the control of the controller 7; the first flow meter 615 is electrically connected to the controller 7, and is used to transmit the measurement results to the controller 7; the controller 7 controls the opening of the proportional control valve 614 according to the intake air flow measured by the first flow meter 615.

[0062] Continue to refer to Figure 3 The vacuum assembly 62 includes at least one vacuum gas collecting pipe 621, a vacuum pump 622, a vacuum tank 623 and a plurality of second vacuum baffle valves 624. The plurality of second vacuum baffle valves 624 are installed on at least one vacuum gas collecting pipe 621, and the plurality of second vacuum baffle valves 624 are all connected to the gas circuit control assembly 63, and are opened and closed under the control of the gas circuit control assembly 63. The vacuum pump 622 is connected to at least one vacuum gas collecting pipe 621 through the vacuum tank 623, and is electrically connected to the controller 7.

[0063] Figure 3 The vacuum assembly 62 includes three vacuum gas collecting pipes 621, which are connected through pipelines, and each vacuum gas collecting pipe 621 is connected to a gas distribution pipe b.

[0064] Multiple gas distribution pipes b connected to the second vacuum baffle valve 624 are respectively connected to the two ends of multiple task devices 8, the two ends of the irradiation tube 1 and one end of the waste tank 2 close to the first switch 3. When the second vacuum baffle valve 624 is controlled to open by the gas circuit control component 63, the gas in the conveying pipeline flows out through the gas outlet inlet and flows into the vacuum gas collecting pipe 621.

[0065] When the vacuum assembly 62 in this embodiment is working, the vacuum pump 622 evacuates the gas in the vacuum tank 623 , and the vacuum collecting pipe 621 connected to the vacuum tank 623 is evacuated of gas by the vacuum tank 623 , so that a vacuum is formed in the vacuum collecting pipe 621 .

[0066] In addition, the vacuum component 62 also includes a second flow meter 625 arranged between the vacuum tank 623 and the vacuum collecting pipe 621; the second flow meter 625 is electrically connected to the controller 7 and transmits the measurement result to the controller 7; the controller 7 controls the vacuum pump 622 according to the measurement result of the second flow meter 625.

[0067] Continue to refer to Figure 4 The air circuit control assembly 63 includes an air compressor 631, an air tank 632, a plurality of first solenoid valves 633 and a plurality of second solenoid valves 634. The air compressor 631 is connected to the air tank 632, and is used to compress the air and deliver it to the air tank 632, so that the high-pressure gas is stored in the air tank 632. The plurality of first solenoid valves 633 and the plurality of second solenoid valves 634 are both connected to the air tank 632, and the plurality of first solenoid valves 633 are connected to the plurality of first vacuum baffle valves 613 one by one, and the plurality of second solenoid valves 634 are connected to the plurality of second vacuum baffle valves 624 one by one. The controller 7 is electrically connected to the plurality of first solenoid valves 633 and the plurality of second solenoid valves 634.

[0068] The controller 7 controls the first solenoid valve 633 to change the direction in which the high-pressure gas in the gas tank 632 enters the corresponding first vacuum baffle valve 613, thereby realizing the opening and closing of the first vacuum baffle valve 613. Similarly, the controller 7 controls the second solenoid valve 634 to change the direction in which the high-pressure gas in the gas tank 632 enters the corresponding second vacuum baffle valve 624, thereby realizing the opening and closing of the second vacuum baffle valve 624. The first solenoid valve 633 and the second solenoid valve 634 are both three-position five-way solenoid valves.

[0069] In addition, the gas circuit control assembly 63 further includes two gas circuit distributors 635; both gas circuit distributors 635 are connected to the gas storage tank 632; a plurality of first solenoid valves 633 are installed on one of the gas circuit distributors 635, and a plurality of second solenoid valves 634 are installed on the other gas circuit distributor 635. The two gas circuit distributors 635 distribute the high-pressure gas in the gas storage tank 632 to the plurality of first solenoid valves 633 and the plurality of second solenoid valves 634, respectively.

[0070] The pneumatic conveying device provided in this embodiment also includes a plurality of detection sensors 9 electrically connected to the controller 7. The sample injector 5 is provided with a detection sensor 9 for detecting whether the sample box enters the conveying pipeline. The input end and multiple output ends of the first circuit changer 3, and the input end and multiple output ends of the second circuit changer 4 are provided with detection sensors 9 for detecting the passage of the sample box. The ends of the plurality of functional parts connected to the second circuit changer 4, and the ends of the irradiation tube 1 and the waste tank 2 connected to the first circuit changer 3 are provided with detection sensors 9.

[0071] In this embodiment, the detection sensors 9 are two opposing beam sensors.

[0072] When the sample box passes through the location of the detection sensor 9 , the detection sensor 9 can detect the sample box and send a signal of the sample box detection to the controller 7 , so that the controller 7 can obtain the location and moving direction of the sample box.

[0073] When the detection sensor 9 installed at the input end detects the sample box first, and then the detection sensor 9 installed at the output end of the connection section with the irradiation tube 1 detects the sample box, the controller 7 can determine that the sample box moves toward the irradiation tube 1 through the first converter 3.

[0074] This embodiment provides a specific structure of the controller 7, such as Figure 5 The controller 7 includes a local control terminal 701, a remote control terminal 702 and a programmable logic controller 703. The local control terminal 701 and the remote control terminal 702 are both signal-connected to the programmable logic controller 703, and are used to send control signals to the programmable logic controller 703. The programmable logic controller 703 is electrically connected to the sample injector 5, the pneumatic device 6, the first circuit converter 3 and the second circuit converter 4.

[0075] Both the local control terminal 701 and the remote control terminal 702 can send control signals to the programmable logic controller 703 through programs, and the programmable logic controller 703 can control the injector 5, the pneumatic device 6, the first converter 3 and the second converter 4 according to the control signals.

[0076] The above description is only a specific embodiment of the present invention, and a comparison of the effects of the specific embodiments and the related comparative examples, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pneumatic conveying device, characterized in that: It comprises an irradiation tube (1), a waste tank (2), a first circuit changer (3), a second circuit changer (4), a sample injector (5), a pneumatic device (6), a controller (7) and a plurality of task devices (8); The output end of the sample injector (5) is respectively connected to the input end of the first circuit converter (3) and the input end of the second circuit converter (4); the output end of the first circuit converter (3) is simultaneously connected to the irradiation tube (1) and the waste tank (2); and the output end of the second circuit converter (4) is respectively connected to a plurality of task devices (8); The output end of the pneumatic device (6) is respectively connected to the irradiation tube (1), the waste tank (2) and a plurality of task devices (8); The controller (7) is electrically connected to the first circuit converter (3), the second circuit converter (4), the sample injector (5), and the pneumatic device (6).

2. A pneumatic conveying device according to claim 1, characterized in that: The pneumatic device (6) comprises an air intake component (61), a vacuum component (62) and an air path control component (63); The air intake assembly (61) is electrically connected to the controller (7); the input end of the air intake assembly (61) is connected to the outside air, and the output end is connected to the irradiation tube (1), the waste tank (2), and a plurality of task devices (8), and is used to deliver airflow to the irradiation tube (1) or the waste tank (2) or one of the task devices (8), and input the delivery result to the controller (7); The vacuum component (62) is electrically connected to the controller (7), the output end of the vacuum component (62) is connected to the outside air, and the input end is connected to the irradiation tube (1), the waste tank (2), and a plurality of task devices (8), and is used to provide negative pressure to the irradiation tube (1) or the waste tank (2) or one of the task devices (8), and input the negative pressure formation parameters into the controller (7); The gas circuit control component (63) is electrically connected to the controller (7), the air intake component (61), and the vacuum component (62), and is used to receive control instructions issued by the controller (7), and control the connection or disconnection of the air intake component (61) and the irradiation tube (1), the waste tank (2), and the plurality of task devices (8), and at the same time control the connection or disconnection of the vacuum component (62) and the irradiation tube (1), the waste tank (2), and the plurality of task devices (8).

3. A pneumatic conveying device according to claim 2, characterized in that: The air intake assembly (61) comprises m air intake manifolds (611), wherein m≥1, the m air intake manifolds (611) are all connected to an air intake pipeline (612), each of the air intake manifolds (611) is respectively connected to a plurality of air distribution pipes a, each air distribution pipe a is provided with a first vacuum baffle valve (613), both ends of the irradiation tube (1), one end of the waste tank (2) close to the first circuit changer (3), and both ends of the plurality of task devices (8) or one end close to the second circuit circulator (4) are respectively connected to the air distribution pipe a or the vacuum assembly (62); each of the first vacuum baffle valves (613) is connected to an air circuit control assembly (63); The air intake pipeline (612) is also connected to a proportional regulating valve (614) and a first flow meter (615), and the proportional regulating valve (614) and the first flow meter (615) are electrically connected to a controller (7).

4. A pneumatic conveying device according to claim 3, characterized in that: The vacuum assembly (62) comprises n vacuum gas collecting pipes (621), wherein n≥1, the n vacuum gas collecting pipes (621) are all connected to one end of a negative pressure pipeline, each of the vacuum gas collecting pipes (621) is respectively connected to a plurality of gas distribution pipes b, and each gas distribution pipe b is provided with a second vacuum baffle valve (624); each of the second vacuum baffle valves (624) is connected to an air circuit control assembly (63); Both ends of the irradiation tube (1), one end of the waste tank (2) close to the first circuit converter (3), and both ends of the plurality of task devices (8) or one end close to the second circuit circulator (4) are respectively connected to the gas distribution pipe a or the gas distribution pipe b; The other end of the negative pressure pipeline is connected to a vacuum tank (623) and a vacuum pump (622) in sequence. The negative pressure pipeline is also connected to a second flow meter (625), and the second flow meter (625) is electrically connected to a controller (7).

5. A pneumatic conveying device according to claim 4, characterized in that: The plurality of task devices (8) include a measuring tube (801), a receiver (802), and a multi-sample storage (803) respectively connected to the output end of the second converter (4); The two ends of the measuring tube (801) are respectively connected to the gas distribution pipe a or the gas distribution pipe b; One end of the receiver (802) close to the second converter (4) is connected to the gas distribution pipe a or the gas distribution pipe b; The two ends of the multi-sample storage (803) are respectively connected to the gas distribution pipe a or the gas distribution pipe b.

6. A pneumatic conveying device according to claim 4, characterized in that: The first vacuum baffle valve (613) and the second vacuum baffle valve (624) are both three-position five-way solenoid valves.

7. A pneumatic conveying device according to claim 6, characterized in that: The gas circuit control component (63) comprises an air compressor (631), the air compressor (631) is connected to a gas storage tank (632) via a gas pipeline, and the gas storage tank (632) is connected to two gas circuit distributors (635) via a gas pipeline; A plurality of first solenoid valves (633) are connected to one of the gas path distributors (635), and each of the first solenoid valves (633) is correspondingly connected to a first vacuum baffle valve (613); A plurality of second solenoid valves (634) are connected to another gas path distributor, and each of the second solenoid valves (634) is correspondingly connected to a second vacuum baffle valve (624); The plurality of first solenoid valves (633) and the plurality of second solenoid valves (634) are all electrically connected to the controller (7).

8. A pneumatic conveying device according to claim 7, characterized in that: A pneumatic two-way connection (636) is also connected to the gas pipeline between the gas storage tank (632) and the two gas distributors (635).

9. A pneumatic conveying device according to claim 1, characterized in that: The sample injector (5), the input and output ends of the first circuit converter (3), the input and output ends of the second circuit converter (4), one end of a plurality of task devices (8) close to the output end of the second circuit converter (4), the input end of the irradiation tube (1), and the input end of the waste tank (2) are all connected to a detection sensor (9) for sample box detection, and each of the detection sensors (9) is electrically connected to a controller (7).

10. The pneumatic conveying device according to claim 1, characterized in that: The controller (7) comprises a local control terminal (701), a remote control terminal (702) and a programmable logic controller (703); The local control terminal (701) and the remote control terminal (702) are both electrically connected to a programmable logic controller (703), and the local control terminal (701) and the remote control terminal (702) are both used to send control signals to the programmable logic controller (703); The programmable logic controller (703) is electrically connected to the first circuit converter (3), the second circuit converter (4), the sample injector (5), and the pneumatic device (6).

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