Samplers for trace explosives detectors

Abstract

The present invention relates to a sampler for a trace explosive detector, and belongs to the technical field of trace explosive detection. The sampler for a trace explosive detector includes a bottom shell and a top cover, an opening is provided on the upper part of the bottom shell, a top cover for sealing the opening is provided at the opening, an opening is provided on one side of the bottom shell, a connecting plate for connecting to a host is fixedly provided at the opening, a jack for inserting a sampling piece is provided on the top cover, a heating head to tube PCB is fixedly provided at the bottom of the bottom shell, a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB, connecting members for connecting to the host are provided on both sides of the bottom shell, a heating head adapter plate is provided on the open side of the bottom shell, and the heating head adapter plate is electrically connected to the heating head to tube PCB. Beneficial effects: Solve the problem that the sampling piece of the trace explosive detector needs to be heated and clamped from the back; the snap connection method is convenient for the operator to use and improves the efficiency of installation and disassembly.

Description

Technical Field

[0001] The invention belongs to the technical field of fluorescent trace explosive detection, and in particular relates to a sampler for a trace explosive detector. Background Art

[0002] The fluorescent trace explosive detector is a detection device that integrates mechanics, electronics, chemistry, and optics. Its main working principle is: after obtaining the trace explosive of the detection object through the sampling piece, it is inserted into the heating slot corresponding to the detector for heating to evaporate the trace explosive. The air pump draws the evaporated trace explosive into the sensitive device through the air inlet nozzle for quenching reaction, which is then detected by the optical sensor and the signal is transmitted to the circuit board for sound and light alarm.

[0003] When the trace explosive detector uses a sampling piece to collect the substance to be detected, not only the main engine suction position needs to be heated, but also the back of the sampling piece needs to be heated to increase the detection efficiency and sensitivity. When inserting the sampling piece, the sampling piece needs to be clamped to fix it for heating.

[0004] Therefore, a sampler for a trace explosive detector is proposed to solve the deficiencies in the prior art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a sampler for a trace explosive detector, which solves the problem that the sampling piece of the trace explosive detector needs back heating and clamping; the snap connection method is convenient for the operator to use and improves the efficiency of installation and disassembly.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: the sampler for trace explosive detectors includes a bottom shell and a top cover, the upper part of the bottom shell is provided with an opening, the opening is provided with the top cover for sealing the opening, one side of the bottom shell is provided with an opening, the opening is fixedly provided with a connecting plate for connecting to a host, the top cover is provided with a socket for inserting a sampling piece, a heating head to tube PCB is fixedly provided at the bottom of the bottom shell, a driving part for clamping and heating the sampling piece is provided above the heating head to tube PCB, connecting parts for connecting to a host are provided on both sides of the bottom shell, a heating head adapter plate is provided on the open side of the bottom shell, and the heating head adapter plate is electrically connected to the heating head to tube PCB.

[0007] Beneficial effects: The drive component solves the problem of the need for back heating and clamping of the trace explosive detector sampling piece; the snap-on connection method is easy for the operator to use and improves the efficiency of installation and disassembly.

[0008] Furthermore, the driving member includes a linear driving part, a guide plate, a heat insulation plate, a heating sheet and a heating plate. The output end of the linear driving part is transmission-connected to the guide plate. Both ends of the guide plate are respectively sleeved on a guide shaft, and the guide shaft is fixed on the bottom shell. The guide plate is fixedly arranged on one surface of the heat insulation plate on the side away from the linear driving part. The heat insulation plate is fixedly arranged on the other side relative to the heating plate. The heating sheet is embedded in the heating plate. A slot is arranged on the upper part of the heating plate, and the slot is arranged vertically below the jack. An infrared emitting tube light guide hole is arranged in the bottom shell. An infrared emitting tube and an infrared receiving tube are respectively arranged at both ends of the infrared emitting tube light guide hole. When the sampling sheet is inserted into the slot to block the infrared emitting tube light guide hole, the infrared emitting tube triggers the linear driving part to push the guide plate to move. The heating head tube PCB is electrically connected to the linear driving part.

[0009] The beneficial effect of adopting the above further scheme is: when the sampling piece is inserted into the heating plate slot, the sampling piece blocks the light guide hole of the infrared emitting tube, the infrared emitting tube triggers the linear drive unit, drives the guide plate to move, pushes the guide plate, and the heating plate on the guide plate will cooperate with the heating head on the main unit to press the sampling piece and heat it at the same time, thereby increasing detection efficiency and sensitivity.

[0010] Furthermore, a temperature sensor is fixedly provided on the heat insulation board.

[0011] The beneficial effects of adopting the above further solution are: being used to detect the heating temperature, improving the accuracy of the detection data, and improving work efficiency.

[0012] Furthermore, the linear drive unit is an electromagnet with an iron core shaft, and the guide plate is sleeved on the iron core shaft.

[0013] The beneficial effects of adopting the above further solution are: simple structure, the electromagnet drives the guide plate to move, the process is stable, and the operation is convenient.

[0014] Furthermore, a heat sink pressing plate is provided on the electromagnet, and a plurality of heat sinks are fixedly provided on the heat sink pressing plate.

[0015] The beneficial effect of adopting the above further solution is: timely heat dissipation to avoid burning of the equipment.

[0016] Furthermore, a PCB cover is provided on the heating head tube PCB.

[0017] The beneficial effect of adopting the above further solution is: protecting the heating head tube PCB and improving the service life.

[0018] Furthermore, the connecting member includes a first snap cover and a second snap cover, the first snap cover and the second snap cover are respectively arranged on two opposite outer sides of the bottom shell, one end of the first snap cover and the second snap cover are respectively connected to the bottom shell through a spring, the two opposite outer sides of the bottom shell are arranged to form inclined surfaces, the other ends of the first snap cover and the second snap cover are both provided with connecting buckles, and waterproof strips are provided between the bottom shell and the top cover and at the open end of the bottom shell.

[0019] The beneficial effects of adopting the above further solution are: convenient assembly and disassembly, and good fixing effect.

[0020] Furthermore, a permanent magnet is provided at the opening of the bottom shell for easy alignment with the iron bar on the host.

[0021] The beneficial effects of adopting the above further solution are: easy alignment with the host, convenient installation, and time saving.

[0022] Furthermore, a limiting portion for limiting the position of the sampling piece is arranged in the bottom shell, and the limiting portion is arranged vertically below the heating plate.

[0023] The beneficial effect of adopting the above further solution is to solve the problems of inaccurate test position caused by bending and deformation of the sampling piece and failure to trigger the infrared tube sensor.

[0024] Furthermore, the limiting portion is a plurality of limiting ribs arranged at intervals.

[0025] The beneficial effect of adopting the above further solution is that the sampling piece will become soft when heated, causing the sampling piece to bend, and the sampling piece is restricted from further moving downward by the limiting ribs, resulting in inaccurate detection position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of the present invention;

[0027] Figure 2 for Figure 1 AA section view;

[0028] Figure 3 for Figure 1 BB cross-sectional view;

[0029] Figure 4 for Figure 1 CC section view;

[0030] Figure 5 is a side view of the present invention;

[0031] Figure 6 for Figure 5 DD cross-sectional view;

[0032] Figure 7 A top view of the present invention;

[0033] Figure 8 A bottom view of the present invention;

[0034] Fig. 9 Provide a connection diagram for sampler and host installation;

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Connecting buckle; 2. Spring; 3. First buckle cover; 4. Second buckle cover; 5. Bottom shell; 6. Guide shaft; 7. Heating head to tube PCB; 8. Permanent magnet; 9. PCB cover; 10. Electromagnet; 11. Guide plate; 12. Heat insulation board; 13. Heating plate; 14. Temperature sensor; 15. Heating plate; 16. Heating head adapter plate; 17. Connecting plate; 18. Top cover; 19. Waterproof rubber strip; 20. Heat sink; 21. Host; 22. Heat sink pressure plate. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0038] Since both the spectrometer module and sensitive devices of the trace explosive detector need to be tested, and because the sensitive devices need to be installed in the spectrometer module, if the detection tooling is made separately, there are many types of tooling, high costs, and low detection efficiency. Some automated structural detection is needed to improve detection accuracy and work efficiency.

[0039] Example 1

[0040] like Figure 1-9 As shown, this embodiment provides a sampler for a trace explosive detector, including: a bottom shell 5 and a top cover 18, the top of the bottom shell 5 is provided with an opening, the opening is provided with the top cover 18 for sealing the opening, one side of the bottom shell 5 is provided with an opening, a connecting plate 17 for connecting to a host is fixedly provided at the opening, the connecting plate 17 is provided with a notch for a heating head on the host to pass through, the top cover 18 is provided with a socket for inserting a sampling piece, a heating head to tube PCB7 is fixedly provided at the bottom of the bottom shell 5, a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB7, connectors for connecting to the host are provided on both sides of the bottom shell 5, a heating head adapter plate 16 is provided on the open side of the bottom shell 5 for interface connection with a host 21, and the heating head adapter plate 16 is electrically connected to the heating head to tube PCB7.

[0041] A notch is provided on the connecting plate 17 for the heating head on the main unit 21 to pass through, and the driving member cooperates with the heating head to clamp the sampling piece. The sampling piece is heated not only by the heating head, but also by the back of the driving member with heating function. The fixing effect is good and the detection data is accurate. The sampler is connected to the main unit 21 by a connecting member, which is convenient for the operator to use and improves the efficiency of installation and disassembly.

[0042] Example 2

[0043] like Figure 1-9 As shown, this embodiment provides a sampler for a trace explosive detector, including: a bottom shell 5 and a top cover 18, the top of the bottom shell 5 is provided with an opening, the opening is provided with the top cover 18 for sealing the opening, one side of the bottom shell 5 is provided with an opening, a connecting plate 17 for connecting to a host is fixedly provided at the opening, the connecting plate 17 is provided with a notch for a heating head on the host to pass through, the top cover 18 is provided with a socket for inserting a sampling piece, a heating head to tube PCB7 is fixedly provided at the bottom of the bottom shell 5, a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB7, connectors for connecting to the host are provided on both sides of the bottom shell 5, a heating head adapter plate 16 is provided on the open side of the bottom shell 5 for interface connection with a host 21, and the heating head adapter plate 16 is electrically connected to the heating head to tube PCB7.

[0044] A notch is provided on the connecting plate 17 for the heating head on the main unit 21 to pass through, and the driving member cooperates with the heating head to clamp the sampling piece. The sampling piece is heated not only by the heating head, but also by the back of the driving member with heating function. The fixing effect is good and the detection data is accurate. The sampler is connected to the main unit 21 by a connecting member, which is convenient for the operator to use and improves the efficiency of installation and disassembly.

[0045] Preferably, in this embodiment, the driving member includes a linear driving part, a guide plate 11, a heat insulating plate 12, a heating plate 13 and a heating plate 15, the linear driving part is an electromagnet 10 with an iron core shaft, the guide plate 11 is sleeved on the iron core shaft, the two ends of the guide plate 11 are respectively sleeved on a guide shaft 6, the guide shaft 6 is fixed to the bottom shell 5 by screws, the guide plate 11 is fixed on one side of the heat insulating plate 12 away from the linear driving part by screws, the heat insulating plate 12 is fixed with the heating plate 15 on the other side thereof by screws, the heating plate 15 is embedded with the heating plate 13, the heating plate A slot is provided on the upper part of 15, and the slot is provided vertically below the jack. An infrared emitting tube light guide hole is provided in the bottom shell 5, and an infrared emitting tube and an infrared receiving tube are provided at both ends of the infrared emitting tube light guide hole. When the sampling piece is inserted into the slot to block the infrared emitting tube light guide hole, the infrared emitting tube triggers the linear drive unit to push the guide plate 11 to move, and the heating head to tube PCB7 is electrically connected to the linear drive unit. The heating head to tube PCB7 receives the electrical signal received by the infrared emitting tube, and then controls the operation of the electromagnet. The iron core shaft pushes the guide plate 11 to clamp the sampling piece, and the heating piece 13 is electrically connected to the heating head to tube PCB7.

[0046] Preferably, in this embodiment, a heat sink pressing plate 22 is provided on the electromagnet, and a plurality of heat sinks 20 are fixedly provided on the heat sink pressing plate 22 , which is in contact with the electromagnet 10 , so as to achieve the function of rapid heat dissipation and improve the service life of the electromagnet 10 .

[0047] Preferably, in this embodiment, a PCB cover 9 is provided on the heating head pair tube PCB7 to protect the heating head pair tube PCB7 and increase the service life.

[0048] Example 3

[0049] like Figure 1-9 As shown, this embodiment provides a sampler for a trace explosive detector, including: a bottom shell 5 and a top cover 18, the top of the bottom shell 5 is provided with an opening, the opening is provided with the top cover 18 for sealing the opening, one side of the bottom shell 5 is provided with an opening, a connecting plate 17 for connecting to a host is fixedly provided at the opening, the connecting plate 17 is provided with a notch for a heating head on the host to pass through, the top cover 18 is provided with a socket for inserting a sampling piece, a heating head to tube PCB7 is fixedly provided at the bottom of the bottom shell 5, a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB7, connectors for connecting to the host are provided on both sides of the bottom shell 5, a heating head adapter plate 16 is provided on the open side of the bottom shell 5 for interface connection with a host 21, and the heating head adapter plate 16 is electrically connected to the heating head to tube PCB7.

[0050] A notch is provided on the connecting plate 17 for the heating head on the main unit 21 to pass through, and the driving member cooperates with the heating head to clamp the sampling piece. The sampling piece is heated not only by the heating head, but also by the back of the driving member with heating function. The fixing effect is good and the detection data is accurate. The sampler is connected to the main unit 21 by a connecting member, which is convenient for the operator to use and improves the efficiency of installation and disassembly.

[0051] Preferably, in this embodiment, the driving member includes a linear driving part, a guide plate 11, a heat insulating plate 12, a heating plate 13 and a heating plate 15, the linear driving part is an electromagnet 10 with an iron core shaft, the guide plate 11 is sleeved on the iron core shaft, the two ends of the guide plate 11 are respectively sleeved on a guide shaft 6, the guide shaft 6 is fixed to the bottom shell 5 by screws, the guide plate 11 is fixed on one side of the heat insulating plate 12 away from the linear driving part by screws, the heat insulating plate 12 is fixed with the heating plate 15 on the other side thereof by screws, the heating plate 15 is embedded with the heating plate 13, the heating plate A slot is provided on the upper part of 15, and the slot is provided vertically below the jack. An infrared emitting tube light guide hole is provided in the bottom shell 5, and an infrared emitting tube and an infrared receiving tube are provided at both ends of the infrared emitting tube light guide hole. When the sampling piece is inserted into the slot to block the infrared emitting tube light guide hole, the infrared emitting tube triggers the linear drive unit to push the guide plate 11 to move, and the heating head to tube PCB7 is electrically connected to the linear drive unit. The heating head to tube PCB7 receives the electrical signal received by the infrared emitting tube, and then controls the operation of the electromagnet. The iron core shaft pushes the guide plate 11 to clamp the sampling piece, and the heating piece 13 is electrically connected to the heating head to tube PCB7.

[0052] Preferably, in this embodiment, a heat sink pressing plate 22 is provided on the electromagnet, and a plurality of heat sinks 20 are fixedly provided on the heat sink pressing plate 22 , which is in contact with the electromagnet 10 , so as to achieve the function of rapid heat dissipation and improve the service life of the electromagnet 10 .

[0053] Preferably, in this embodiment, a PCB cover 9 is provided on the heating head pair tube PCB7 to protect the heating head pair tube PCB7 and increase the service life.

[0054] Preferably, in this embodiment, the connecting member includes a first snap cover 3 and a second snap cover 4, the first snap cover 3 and the second snap cover 4 are respectively arranged on two opposite outer sides of the bottom shell 5, one end of the first snap cover 3 and the second snap cover 4 are respectively connected to the bottom shell 5 through a spring 2, the two opposite outer sides of the bottom shell 5 are arranged as inclined surfaces, the other ends of the first snap cover 3 and the second snap cover 4 are each provided with a connecting buckle 1, and a waterproof rubber strip 19 is provided between the bottom shell 5 and the top cover 18 and at the open part of the bottom shell 5. When in use, it is only necessary to press the first snap cover 3 and the second snap cover 4 close to one end of the spring 2 by hand, and the connecting buckle 1 is clamped in the groove corresponding to the position of the host 21, which is convenient for assembly and disassembly and has a good fixing effect.

[0055] Preferably, in this embodiment, a permanent magnet 8 is provided at the open portion of the bottom shell 5 for easy alignment with the iron bar on the main unit, and an iron bar is provided at a corresponding position on the main unit 21, which is convenient for installation, alignment, and time saving.

[0056] Example 4

[0057] like Figure 1-9 As shown, this embodiment provides a sampler for a trace explosive detector, including: a bottom shell 5 and a top cover 18, the top of the bottom shell 5 is provided with an opening, the opening is provided with the top cover 18 for sealing the opening, one side of the bottom shell 5 is provided with an opening, a connecting plate 17 for connecting to a host is fixedly provided at the opening, the connecting plate 17 is provided with a notch for a heating head on the host to pass through, the top cover 18 is provided with a socket for inserting a sampling piece, a heating head to tube PCB7 is fixedly provided at the bottom of the bottom shell 5, a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB7, connectors for connecting to the host are provided on both sides of the bottom shell 5, a heating head adapter plate 16 is provided on the open side of the bottom shell 5 for interface connection with a host 21, and the heating head adapter plate 16 is electrically connected to the heating head to tube PCB7.

[0058] A notch is provided on the connecting plate 17 for the heating head on the main unit 21 to pass through, and the driving member cooperates with the heating head to clamp the sampling piece. The sampling piece is heated not only by the heating head, but also by the back of the driving member with heating function. The fixing effect is good and the detection data is accurate. The sampler is connected to the main unit 21 by a connecting member, which is convenient for the operator to use and improves the efficiency of installation and disassembly.

[0059] Preferably, in this embodiment, the driving member includes a linear driving part, a guide plate 11, a heat insulating plate 12, a heating plate 13 and a heating plate 15, the linear driving part is an electromagnet 10 with an iron core shaft, the guide plate 11 is sleeved on the iron core shaft, the two ends of the guide plate 11 are respectively sleeved on a guide shaft 6, the guide shaft 6 is fixed to the bottom shell 5 by screws, the guide plate 11 is fixed on one side of the heat insulating plate 12 away from the linear driving part by screws, the heat insulating plate 12 is fixed with the heating plate 15 on the other side thereof by screws, the heating plate 15 is embedded with the heating plate 13, the heating plate A slot is provided on the upper part of 15, and the slot is provided vertically below the jack. An infrared emitting tube light guide hole is provided in the bottom shell 5, and an infrared emitting tube and an infrared receiving tube are provided at both ends of the infrared emitting tube light guide hole. When the sampling piece is inserted into the slot to block the infrared emitting tube light guide hole, the infrared emitting tube triggers the linear drive unit to push the guide plate 11 to move, and the heating head to tube PCB7 is electrically connected to the linear drive unit. The heating head to tube PCB7 receives the electrical signal received by the infrared emitting tube, and then controls the operation of the electromagnet. The iron core shaft pushes the guide plate 11 to clamp the sampling piece, and the heating piece 13 is electrically connected to the heating head to tube PCB7.

[0060] Preferably, in this embodiment, a heat sink pressing plate 22 is provided on the electromagnet, and a plurality of heat sinks 20 are fixedly provided on the heat sink pressing plate 22 , which is in contact with the electromagnet 10 , so as to achieve the function of rapid heat dissipation and improve the service life of the electromagnet 10 .

[0061] Preferably, in this embodiment, a PCB cover 9 is provided on the heating head pair tube PCB7 to protect the heating head pair tube PCB7 and increase the service life.

[0062] Preferably, in this embodiment, the connecting member includes a first snap cover 3 and a second snap cover 4, the first snap cover 3 and the second snap cover 4 are respectively arranged on two opposite outer sides of the bottom shell 5, one end of the first snap cover 3 and the second snap cover 4 are respectively connected to the bottom shell 5 through a spring 2, the two opposite outer sides of the bottom shell 5 are arranged as inclined surfaces, the other ends of the first snap cover 3 and the second snap cover 4 are each provided with a connecting buckle 1, and a waterproof rubber strip 19 is provided between the bottom shell 5 and the top cover 18 and at the open part of the bottom shell 5. When in use, it is only necessary to press the first snap cover 3 and the second snap cover 4 close to one end of the spring 2 by hand, and the connecting buckle 1 is clamped in the groove corresponding to the position of the host 21, which is convenient for assembly and disassembly and has a good fixing effect.

[0063] Preferably, in this embodiment, a permanent magnet 8 is provided at the open portion of the bottom shell 5 for easy alignment with the iron bar on the main unit, and an iron bar is provided at a corresponding position on the main unit 21, which is convenient for installation, alignment, and time saving.

[0064] Preferably, in this embodiment, a limiting portion for limiting the position of the sampling piece is disposed in the bottom shell 5 , and the limiting portion is disposed vertically below the heating plate 15 .

[0065] Example 5

[0066] like Figure 1-9 As shown, this embodiment provides a sampler for a trace explosive detector, including: a bottom shell 5 and a top cover 18, the top of the bottom shell 5 is provided with an opening, the opening is provided with the top cover 18 for sealing the opening, one side of the bottom shell 5 is provided with an opening, a connecting plate 17 for connecting to a host is fixedly provided at the opening, the connecting plate 17 is provided with a notch for a heating head on the host to pass through, the top cover 18 is provided with a socket for inserting a sampling piece, a heating head to tube PCB7 is fixedly provided at the bottom of the bottom shell 5, a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB7, connectors for connecting to the host are provided on both sides of the bottom shell 5, a heating head adapter plate 16 is provided on the open side of the bottom shell 5 for interface connection with a host 21, and the heating head adapter plate 16 is electrically connected to the heating head to tube PCB7.

[0067] A notch is provided on the connecting plate 17 for the heating head on the main unit 21 to pass through, and the driving member cooperates with the heating head to clamp the sampling piece. The sampling piece is heated not only by the heating head, but also by the back of the driving member with heating function. The fixing effect is good and the detection data is accurate. The sampler is connected to the main unit 21 by a connecting member, which is convenient for the operator to use and improves the efficiency of installation and disassembly.

[0068] Preferably, in this embodiment, the driving member includes a linear driving part, a guide plate 11, a heat insulating plate 12, a heating plate 13 and a heating plate 15, the linear driving part is an electromagnet 10 with an iron core shaft, the guide plate 11 is sleeved on the iron core shaft, the two ends of the guide plate 11 are respectively sleeved on a guide shaft 6, the guide shaft 6 is fixed to the bottom shell 5 by screws, the guide plate 11 is fixed on one side of the heat insulating plate 12 away from the linear driving part by screws, the heat insulating plate 12 is fixed with the heating plate 15 on the other side thereof by screws, the heating plate 15 is embedded with the heating plate 13, the heating plate A slot is provided on the upper part of 15, and the slot is provided vertically below the jack. An infrared emitting tube light guide hole is provided in the bottom shell 5, and an infrared emitting tube and an infrared receiving tube are provided at both ends of the infrared emitting tube light guide hole. When the sampling piece is inserted into the slot to block the infrared emitting tube light guide hole, the infrared emitting tube triggers the linear drive unit to push the guide plate 11 to move, and the heating head to tube PCB7 is electrically connected to the linear drive unit. The heating head to tube PCB7 receives the electrical signal received by the infrared emitting tube, and then controls the operation of the electromagnet. The iron core shaft pushes the guide plate 11 to clamp the sampling piece, and the heating piece 13 is electrically connected to the heating head to tube PCB7.

[0069] Preferably, in this embodiment, a heat sink pressing plate 22 is provided on the electromagnet, and a plurality of heat sinks 20 are fixedly provided on the heat sink pressing plate 22 , which is in contact with the electromagnet 10 , so as to achieve the function of rapid heat dissipation and improve the service life of the electromagnet 10 .

[0070] Preferably, in this embodiment, a PCB cover 9 is provided on the heating head pair tube PCB7 to protect the heating head pair tube PCB7 and increase the service life.

[0071] Preferably, in this embodiment, the connecting member includes a first snap cover 3 and a second snap cover 4, the first snap cover 3 and the second snap cover 4 are respectively arranged on two opposite outer sides of the bottom shell 5, one end of the first snap cover 3 and the second snap cover 4 are respectively connected to the bottom shell 5 through a spring 2, the two opposite outer sides of the bottom shell 5 are arranged as inclined surfaces, the other ends of the first snap cover 3 and the second snap cover 4 are each provided with a connecting buckle 1, and a waterproof rubber strip 19 is provided between the bottom shell 5 and the top cover 18 and at the open part of the bottom shell 5. When in use, it is only necessary to press the first snap cover 3 and the second snap cover 4 close to one end of the spring 2 by hand, and the connecting buckle 1 is clamped in the groove corresponding to the position of the host 21, which is convenient for assembly and disassembly and has a good fixing effect.

[0072] Preferably, in this embodiment, a permanent magnet 8 is provided at the open portion of the bottom shell 5 for easy alignment with the iron bar on the main unit, and an iron bar is provided at a corresponding position on the main unit 21, which is convenient for installation, alignment, and time saving.

[0073] Preferably, in this embodiment, a limiting portion for limiting the position of the sampling piece is disposed in the bottom shell 5 , and the limiting portion is disposed vertically below the heating plate 15 .

[0074] The limiting part is a plurality of limiting ribs arranged at intervals. Since the sampling piece needs to be heated during the air sampling process, and since the sampling piece is a Teflon sheet, it will become soft after heating, and will bend after being inserted into the bottom surface of the shell, that is, the position of the real substance to be detected will move down, resulting in the inability to allow the substance to be detected to be inhaled to the maximum extent; since the sampling piece is a Teflon sheet, there is a problem of inconsistent light transmittance in the actual production process, and since the infrared tube sensor is used to sense the position of the sampling piece. Therefore, in actual use, the probability of the sampling piece being inserted into the position and triggering the infrared tube sensor is very low; since there is a high-temperature heating component inside the sampler, and since the sampler component requires the user to carefully disassemble and assemble, conventional plastics may cause softening and other problems, and commonly used metals will have excessively high temperatures outside the shell. The sampling piece is limited to continue to move down through the limiting ribs, so that the detection position is accurate and the detection data is more accurate.

[0075] When the present invention is used, the sampling piece collects the substance to be detected, and the heating head of the sampling piece with the substance to be detected facing the host 21, when the sampling piece is inserted into the bottom of the slot, blocking the light guide hole of the infrared emitting tube, the optical sensor sends a signal, which is transmitted to the heating head pair tube PCB7, and then the electromagnet 10 is driven to push the heating plate 15 to cooperate with the heating head extending into the bottom shell 5 of the sampler to clamp the sampling piece, the substance on the sample is heated and evaporated, and the sampling steam is sucked in from the air intake port on one side of the host, and the sampling process is completed. The detection accuracy and work efficiency are improved.

[0076] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0080] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampler for a trace explosive detector, comprising: A bottom shell (5) and a top cover (18), wherein an opening is provided at the top of the bottom shell (5), and the top cover (18) for sealing the opening is provided at the opening; an opening is provided at one side of the bottom shell (5), and a connecting plate (17) for connecting to a host (21) is fixedly provided at the opening; a plug hole for inserting a sampling piece is provided on the top cover (18); a heating head to tube PCB (7) is fixedly provided at the bottom of the bottom shell (5), and a driving member for clamping and heating the sampling piece is provided above the heating head to tube PCB (7); connecting members for connecting to the host (21) are provided on both sides of the bottom shell (5); a heating head adapter plate (16) is provided on the open side of the bottom shell (5), and the heating head adapter plate (16) is electrically connected to the heating head to tube PCB (7); The driving member comprises a linear driving part, a guide plate (11), a heat insulating plate (12), a heating plate (13) and a heating plate (15); the output end of the linear driving part is drivingly connected to the guide plate (11); the two ends of the guide plate (11) are respectively sleeved on a guide shaft (6); the guide shaft (6) is fixed on the bottom shell (5); the guide plate (11) is fixed on one side of the heat insulating plate (12) away from the linear driving part; the heating plate (15) is fixedly provided on the other side of the heat insulating plate (12) The heating plate (15) is embedded with the heating sheet (13), the upper part of the heating plate (15) is provided with a slot, the slot is arranged vertically below the jack, the bottom shell (5) is provided with an infrared emitting tube light guide hole, the two ends of the infrared emitting tube light guide hole are respectively provided with an infrared emitting tube and an infrared receiving tube, when the sampling sheet is inserted into the slot to block the infrared emitting tube light guide hole, the infrared emitting tube triggers the linear drive unit to push the guide plate (11) to move, and the heating head tube PCB (7) is electrically connected to the linear drive unit; The heating head tube PCB (7) is provided with a PCB cover (9); The connecting member comprises a first snap cover (3) and a second snap cover (4), the first snap cover (3) and the second snap cover (4) being respectively arranged on two opposite outer sides of the bottom shell (5), one end of the first snap cover (3) and the second snap cover (4) being respectively connected to the bottom shell (5) via a spring (2), the two opposite outer sides of the bottom shell (5) being arranged to form inclined surfaces, the other ends of the first snap cover (3) and the second snap cover (4) being both provided with connecting buckles (1), and waterproof rubber strips (19) being both provided between the bottom shell (5) and the top cover (18) and at the open portion of the bottom shell (5).

2. The sampler for trace explosive detector according to claim 1, characterized in that: A temperature sensor (14) is fixedly provided on the heat insulation board (12).

3. The sampler for trace explosive detector according to claim 1, characterized in that: The linear drive part is an electromagnet (10) with an iron core shaft, and the guide plate (11) is sleeved on the iron core shaft.

4. The sampler for trace explosive detector according to claim 3, characterized in that: A heat sink pressing plate (22) is provided on the electromagnet, and a plurality of heat sinks (20) are fixedly provided on the heat sink pressing plate (22).

5. The sampler for trace explosive detector according to any one of claims 1 to 4, characterized in that: The open portion of the bottom shell (5) is provided with a permanent magnet (8) for easy alignment with the iron bar on the main unit.

6. The sampler for trace explosive detector according to claim 1, characterized in that: A limiting portion for limiting the position of the sampling piece is arranged in the bottom shell (5), and the limiting portion is arranged vertically below the heating plate (15).

7. The sampler for trace explosive detector according to claim 6, characterized in that: The limiting portion is a plurality of limiting ribs arranged at intervals.

Images