Automatic replacement of sensitive device modules

Abstract

The present invention relates to an automatic replacement sensitive device module, and belongs to the technical field of trace explosive detection. The automatic replacement sensitive device module includes a base plate, on which a spectrometer assembly for detecting sensitive devices is fixedly provided, one side of the spectrometer assembly is provided with a heating assembly for heating trace explosives, a first placement channel penetrating the spectrometer assembly is provided in the spectrometer assembly, and the other side of the spectrometer assembly is provided with a solenoid valve assembly for controlling the gas path, the spectrometer assembly and the solenoid valve assembly are connected by a tube changing assembly, and a plurality of sensitive devices are provided on the tube changing assembly, and the plurality of sensitive devices extend into the first placement channel, and a connecting rod assembly for rotating the solenoid valve assembly is provided between the two sides of the spectrometer assembly and the two sides corresponding to the solenoid valve assembly. Beneficial effects: convenient replacement of sensitive device modules, solving the problem of frequent replacement of consumables, compact structure, and small space occupation.

Description

Technical Field

[0001] The invention belongs to the technical field of fluorescent trace explosive detection, and in particular relates to an automatic replacement sensitive device module. 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] Because sensitive devices need to be installed in the spectrometer module and multiple groups are needed for testing, it will be inconvenient to replace them during disassembly.

[0004] Therefore, an automatic replacement sensitive device module 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 an automatic replacement sensitive device module to facilitate the replacement of the sensitive device module. Multiple solenoid valve assemblies are used to switch different air circuits, and each air circuit can be combined or used independently, solving the problem of frequent replacement of consumables. The structure is compact and takes up little space.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: the automatic replacement of sensitive device module includes a base plate, a spectrometer assembly for detecting sensitive devices is fixedly provided on the base plate, a heating assembly for heating trace explosives is provided on one side of the spectrometer assembly, a first placement channel penetrating the spectrometer assembly is provided in the spectrometer assembly, an electromagnetic valve assembly for controlling the air path is provided on the other side of the spectrometer assembly, the spectrometer assembly and the electromagnetic valve assembly are connected through a tube changing assembly, a plurality of sensitive devices are provided on the tube changing assembly, and the plurality of sensitive devices extend into the first placement channel, and a connecting rod assembly for rotating the electromagnetic valve assembly is provided between the two sides of the spectrometer assembly and the two sides corresponding to the electromagnetic valve assembly.

[0007] Beneficial effects: The heating component heats the trace explosives to vaporize them, which are then sucked into the sensitive device by the solenoid valve component and detected by the spectrometer component. The setting of the connecting rod component facilitates the replacement of the sensitive device module. Multiple solenoid valve components are used to switch different gas circuits, and each gas circuit can be combined or used independently, solving the problem of frequent replacement of consumables. The structure is compact and takes up little space.

[0008] Further, the heating assembly includes an air path diverter plate, an air inlet nozzle, a heating plate, a heat insulation plate, a first O-ring and a first spectrometer cover, one side of the air path diverter plate is fixed to the side wall of the spectrometer assembly through the heat insulation plate, the other side of the air path diverter plate is provided with the air inlet nozzle, one end of the air inlet nozzle extends into the air path diverter plate, a plurality of first air outlet channels are provided in the air path diverter plate, the air inlet nozzles are connected with the plurality of first air outlet channels, a contact surface between the air path diverter plate and the heat insulation plate is provided with a placement groove for placing the heating plate, a plurality of the sensitive devices are respectively extended into the air path diverter plate, a plurality of the sensitive devices are respectively connected with the corresponding plurality of the first air outlet channels, a plurality of the sensitive devices extend into one end of the air path diverter plate and are provided with a first spectrometer cover, a plurality of the first air outlet channels are provided with first O-rings that tightly fit with the first spectrometer cover.

[0009] The beneficial effect of adopting the above further scheme is that trace explosives are evaporated through the heating plate, and the solenoid valve assembly is used to sample steam, and the steam enters the corresponding sensitive components through the first air passage for detection.

[0010] Furthermore, a first temperature sensor for detecting the heating temperature of the heating plate is provided on the gas path diverter plate.

[0011] The beneficial effects of adopting the above further solution are: detecting the temperature of the heating plate, ensuring that the reaction can proceed smoothly, and improving the accuracy of the detection data.

[0012] Furthermore, the spectrometer assembly includes a spectrometer cavity and a spectrometer light board, the spectrometer light board is fixedly provided on the inner top of the spectrometer cavity, and the first placement channel penetrating the spectrometer cavity is provided in the spectrometer cavity.

[0013] The beneficial effect of adopting the above further scheme is that the quenching reaction between the sensitive device and the trace explosive under the action of light is detected by the spectrometer light board to form a new substance.

[0014] Furthermore, a second temperature sensor for detecting temperature is disposed in the first placement channel.

[0015] The beneficial effect of adopting the above further solution is: real-time detection of the temperature at which the reaction occurs facilitates adjustment according to needs and improves the accuracy of the data.

[0016] Further, the connecting rod assembly includes a connecting rod, a pin, a screw, a knob, a connecting rod cover and a return spring, one end of the connecting rod is fixedly connected to the solenoid valve assembly, and the other end is rotatably connected to the side wall of the spectrometer assembly through the pin, L-shaped limit grooves are provided on opposite sides of the spectrometer assembly, the connecting rod cover is fixedly provided on the side of the connecting rod away from the spectrometer assembly, a threaded hole is provided in the connecting rod cover, a through hole is provided on the connecting rod, one end of the screw passes through the threaded hole on the connecting rod cover and the through hole of the connecting rod in sequence and then slides to connect to the limit groove, The return spring is sleeved on one end of the connecting rod extending into the limiting groove, and a limiting portion is provided on the connecting rod. The diameter of the threaded hole is smaller than the diameter of the through hole. One end of the return spring abuts against the end surface of the connecting rod cover, and the other end abuts against the limiting portion. The limiting groove includes a horizontal section and an arc section. The head end of the horizontal section is provided with a first limiting hole for cooperating with the screw to limit the position of the solenoid valve assembly, and the end of the arc section is provided with a second limiting hole for cooperating with the screw to limit the position of the solenoid valve assembly. The other end of the screw is fixedly connected to the knob.

[0017] The beneficial effect of adopting the above-mentioned further scheme is: when the screw is inserted into the first limit hole, the equipment is in use. When the sensitive device needs to be removed, the knob is pulled manually, the screw disengages from the threaded hole, and the connecting rod is pushed to slide in the limit groove, so that the solenoid valve assembly rotates, making room for the tube extraction assembly, and slides to the top of the limit groove. The restoring force of the reset spring is used to insert the screw into the second limit hole, thereby completing the fixation of the solenoid valve assembly and facilitating the replacement of the sensitive device.

[0018] Further, the tube changing assembly includes a tube changing shell, a second spectrometer cover, a glass tube limit block, a hand screw and a second O-ring, a plurality of second placement channels penetrating the tube changing shell is provided in the tube changing shell, a plurality of glass tube limit blocks are provided on the side of the tube changing shell close to the spectrometer assembly, the plurality of second placement channels are provided with the sensitive devices, the plurality of sensitive devices are arranged in a one-to-one correspondence with the plurality of glass tube limit blocks, each of the sensitive devices extends into the corresponding second placement channel and abuts against the corresponding glass tube limit block, a second O-ring is provided in the second placement channel, the second spectrometer cover tightly matched with the second O-ring is sleeved on the sensitive device, a screw column is provided in the spectrometer assembly, one end of the hand screw passes through the tube changing shell and then extends into the screw column, a plurality of air guide holes for communicating with the solenoid valve assembly is provided on the glass tube limit block, and the glass tube limit block is clamped together with the side wall of the solenoid valve assembly.

[0019] The beneficial effect of adopting the above further scheme is: the gas path is fixed and connected by using the tube replacement assembly. The operation only needs to tighten the hand screw to fix the tube replacement assembly, and loosen the hand screw in the opposite direction to complete the removal of the sensitive device, which is easy to operate.

[0020] Further, the solenoid valve assembly includes a solenoid valve housing, an air circuit cover, a solenoid valve, a solenoid valve air nozzle, a solenoid valve cover, a pneumatic joint and an air pump. One end of the solenoid valve housing is provided with a plurality of snap-in holes that cooperate with the sealing ring on the glass tube limit block. A plurality of solenoid valves are provided in the solenoid valve housing. The top and bottom of each solenoid valve are provided with a solenoid valve air nozzle. The solenoid valve air nozzle at the bottom of each solenoid valve is connected to the corresponding air guide hole. The air circuit cover is provided above the solenoid valve. A plurality of second air passages are provided in the air circuit cover. The solenoid valve air nozzle at the top of each solenoid valve is connected to the inlet of the corresponding second air passage. After the outlets of the plurality of second air passages are connected, they are connected to one end of the air pipe through the pneumatic joint. The other end of the air pipe is connected to the output end of the air pump. A pressure sensor is installed on the air pipe.

[0021] The beneficial effect of adopting the above further scheme is: using the air pump to provide power to complete the sampling work, the solenoid valve receives the solenoid valve signal to make it move and open the corresponding air path, and the heating component provides heating for the inhaled trace explosives to vaporize them, and then pass through the spectrometer component for detection.

[0022] Furthermore, a connector interface is provided on the side wall of the spectrometer component, and the connector interface is electrically connected to the heating component, the spectrometer component and the solenoid valve component respectively.

[0023] The beneficial effects of adopting the above further solution are: it is convenient to supply power to the required electrical components, it is easy to use and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 for Figure 1 A front view of

[0026] Figure 3 for Figure 2 AA section view;

[0027] Figure 4 for Figure 1 A top view of

[0028] Figure 5 for Figure 1 Side view of

[0029] Figure 6It is a schematic diagram of the structure of the heating component;

[0030] Figure 7 for Figure 6 A top view of

[0031] Figure 8 for Figure 7 BB cross-sectional view;

[0032] Fig. 9 2 is a cross-sectional view of a gas path manifold;

[0033] Fig.10 is a schematic diagram of the structure of the spectrometer components;

[0034] Fig.11 for Fig.10 A front view of

[0035] Fig.12 for Fig.11 CC section view;

[0036] Fig.13 for Fig.11 DD cross-sectional view;

[0037] Fig.14 for Fig.10 Side view of

[0038] Fig.15 It is a structural schematic diagram of the tube replacement assembly;

[0039] Fig.16 for Fig.15 A cross-sectional view of

[0040] Fig.17 is a structural schematic diagram of a connecting rod assembly;

[0041] Fig.18 for Fig.17 A front view of

[0042] Fig.19 for Fig.18 A cross-sectional view of

[0043] Fig. 20 It is the left side view of the solenoid valve assembly;

[0044] Fig.21 for Fig. 20 EE cross-sectional view;

[0045] Fig. 22 for Fig. 20 FF cross-sectional view;

[0046] Fig.23 for Fig. 20 GG cross-sectional view;

[0047] Fig.24 is a top view of the solenoid valve assembly;

[0048] Fig.25 for Fig.24 HH cross-sectional view;

[0049] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0050] 1. Bottom plate; 2. Heating assembly; 21. Gas flow divider; 22. Inlet nozzle; 23. Heating plate; Support plate; 24. First temperature sensor; 25. Heat insulation board; 26. First O-ring; 27. First spectrometer cover; 3. Spectrometer assembly; 31. Spectrometer cavity; 32. Limiting groove; 33. Spectrometer lamp board; 34. Second temperature sensor; 35. Second limiting hole; 36. First limiting hole; 37. Screw column; 4. Tube replacement assembly; 41. Tube replacement shell; 42. Second spectrometer cover ; 43. Glass tube limit block 43; 44. Thumb screw; 45. Second O-ring; 5. Solenoid valve assembly; 51. Solenoid valve housing; 52. Air circuit cover; 53. Solenoid valve; 54. Solenoid valve nozzle; 55. Solenoid valve cover; 56. Pneumatic connector; 57. Air pump; 58. Pressure sensor; 59. Snap-in hole; 6. Connecting rod assembly; 61. Connecting rod; 62. Pin; 63. Return spring; 64. Screw; 65. Knob; 66. Connecting rod cover; 7. Connector interface; 8. Sensitive device. DETAILED DESCRIPTION

[0051] 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.

[0052] Because the sensitive device needs to be installed in the spectrometer module, and a single sensitive device 8 has a life cycle, in order to increase the replacement cycle, the purpose of extending the maintenance cycle has been achieved. The sensitive device 8 needs to be replaced every time, so multiple channels of sensitive devices 8 are set up, which can be used individually or in combination to improve detection accuracy and work efficiency.

[0053] Example 1

[0054] like Figure 1-6As shown, this embodiment provides an automatic replacement sensitive device module, including: a base plate 1, a spectrometer assembly 3 for detecting sensitive devices is fixedly provided on the base plate 1 by screws, a heating assembly 2 for heating trace explosives is provided on one side of the spectrometer assembly 3, a first placement channel penetrating the spectrometer assembly 3 is provided in the spectrometer assembly 3, a solenoid valve assembly 5 for controlling the gas path is provided on the other side of the spectrometer assembly 3, the spectrometer assembly 3 and the solenoid valve assembly 5 are connected by a tube changing assembly 4, a plurality of sensitive devices 8 are provided on the tube changing assembly 4, and the plurality of sensitive devices 8 extend into the first placement channel, and a connecting rod assembly 6 for rotating the solenoid valve assembly 5 is provided between the two sides of the spectrometer assembly 3 and the two sides corresponding to the solenoid valve assembly 5.

[0055] The heating component 2 heats the trace explosive to vaporize it, and then uses the solenoid valve component 5 to suck it into the sensitive device 8, and detects it through the spectrometer component 3. The setting of the connecting rod component 6 is convenient for replacing the sensitive device module. This module is used in different fields such as gates, vehicles, and boxes. Multiple solenoid valve components 5 are used to switch different air circuits, and each air circuit can be combined or used independently to solve the problem of frequent replacement of consumables. It is equivalent to transmission replacement of sensitive devices, which is more reliable and stable, convenient for wire arrangement, and reduces the damage to the wires caused by moving parts. It has a compact structure and occupies less space.

[0056] Preferably, in this embodiment, the heating assembly 2 includes an air path diverter plate 21, an air inlet nozzle 22, a heating plate 23, a heat insulation plate 25, a first O-ring 26 and a first spectrometer cover 27. One side of the air path diverter plate 21 is fixedly arranged on the side wall of the spectrometer assembly 3 through the heat insulation plate 25. The other side of the air path diverter plate 21 is provided with an air inlet nozzle 22. One end of the air inlet nozzle 22 extends into the air path diverter plate 21. The air path diverter plate 21 is provided with a plurality of first air passages. The air inlet nozzles 22 are all The gas path splitter plate 21 is connected to the plurality of first gas passages, and the contact surface between the gas path splitter plate 21 and the heat insulation plate 25 is provided with a placement groove for placing the heating plate 23. The plurality of sensitive devices 8 are respectively extended into the gas path splitter plate 21, and the plurality of sensitive devices 8 are respectively connected to the corresponding plurality of first gas passages. One end of the plurality of sensitive devices 8 extending into the gas path splitter plate 21 is sleeved with a first spectrometer sleeve 27, and the plurality of first gas passages are provided with a first O-ring 26 that is tightly matched with the first spectrometer sleeve 27. Figure 7-14 As shown, trace explosives are evaporated by the heating plate 23, and the solenoid valve assembly 5 is used to sample the steam, and the steam enters the corresponding sensitive components 8 through the first air passage for detection.

[0057] Preferably, in this embodiment, a first temperature sensor 24 for detecting the heating temperature of the heating plate 23 is provided on the gas path diverter plate 21 to detect the temperature of the heating plate 23 to ensure that the reaction can proceed smoothly and improve the accuracy of the detection data.

[0058] Preferably, in this embodiment, the spectrometer assembly 3 includes a spectrometer cavity 31 and a spectrometer lamp board 33. The spectrometer lamp board 33 is fixedly provided on the inner top of the spectrometer cavity 31. A first placement channel penetrating the spectrometer cavity 31 is provided in the spectrometer cavity 31. Trace explosives are sucked into the sensitive device for quenching reaction. The sensor circuit board on the spectrometer lamp board 33 detects and transmits signals to the circuit board for sound and light alarm.

[0059] Preferably, in this embodiment, a second temperature sensor 34 for detecting temperature is provided in the first placement channel to detect the temperature at which the reaction occurs in real time, so as to facilitate adjustment as needed and improve the accuracy of the data.

[0060] Preferably, in this embodiment, the connecting rod assembly 6 includes a connecting rod 61, a pin 62, a screw rod 64, a knob 65, a connecting rod cover 66 and a reset spring 63. One end of the connecting rod 61 is fixedly connected to the electromagnetic valve assembly 5, and the other end is rotatably connected to the side wall of the spectrometer assembly 3 through the pin 62. L-shaped limit grooves 32 are provided on opposite sides of the spectrometer assembly 3. A connecting rod cover 66 is fixedly provided on the side of the connecting rod 61 away from the spectrometer assembly 3. A threaded hole is provided in the connecting rod cover 66. A through hole is provided on the connecting rod 61. One end of the screw 64 passes through the threaded hole on the connecting rod cover 66 and the through hole of the connecting rod 61 in sequence and then slides The limiting groove 32 is dynamically connected, and one end of the connecting rod 61 extending into the limiting groove 32 is sleeved with a return spring 63. A limiting portion is provided on the connecting rod 61. The diameter of the threaded hole is smaller than the diameter of the through hole. One end of the return spring 63 abuts against the end surface of the connecting rod cover 66, and the other end abuts against the limiting portion. The limiting groove 32 includes a horizontal section and an arc section. The head end of the horizontal section is provided with a first limiting hole 36 for cooperating with the screw 64 to limit the position of the solenoid valve assembly 5. The end of the arc section is provided with a second limiting hole 35 for cooperating with the screw 64 to limit the position of the solenoid valve assembly 5. The other end of the screw 64 is fixedly connected to the knob 65, as shown in FIG. Figure 20-25 As shown, when the screw 64 is inserted into the first limiting hole 35, the device is in use. When the sensitive device 8 needs to be removed, the knob 65 is pulled manually, the screw 64 is disengaged from the threaded hole, and the connecting rod 61 is pushed to slide in the limiting groove 32, so that the solenoid valve assembly 5 rotates, making room for the tube extraction assembly 6, and slides to the top of the limiting groove 32. The restoring force of the reset spring 63 is used to insert the screw 64 into the second limiting hole 35, thereby completing the fixation of the solenoid valve assembly 5 and facilitating the replacement of the sensitive device 8.

[0061] Preferably, in this embodiment, the tube-changing assembly 4 comprises a tube-changing housing 41, a second spectrometer cover 42, a glass tube stopper 43, a hand screw 44 and a second O-ring 45. A plurality of second placement channels penetrating the tube-changing housing 41 are arranged in the tube-changing housing 41. A plurality of glass tube stoppers 43 are arranged on one side of the tube-changing housing 41 close to the spectrometer assembly 3. Sensitive devices 8 are arranged in the plurality of second placement channels. The plurality of sensitive devices 8 correspond to the plurality of glass tube stoppers 43 in a one-to-one manner. Each sensitive device 8 extends into the corresponding The corresponding second placement channel abuts against the corresponding glass tube limit block 43, a second O-ring 45 is provided in the second placement channel, a second spectrometer sleeve 42 tightly matched with the second O-ring 45 is sleeved on the sensitive device 8, a screw column 37 is provided in the spectrometer assembly 3, one end of the hand screw 44 passes through the tube replacement housing 41 and then extends into the screw column 37, a plurality of air guide holes for communicating with the electromagnetic valve assembly 5 are provided on the glass tube limit block 43, and the glass tube limit block 43 is clamped together with the side wall of the electromagnetic valve assembly 5, such as Figure 15-19 As shown, the tube-changing assembly 4 is used to fix and connect the gas path. The operation only requires hand-tightening the hand screw 44 to fix the tube-changing assembly 4, and loosening the hand screw 44 in the opposite direction to complete the disassembly of the sensitive device 8, which is easy to operate.

[0062] Preferably, in this embodiment, the solenoid valve assembly 5 includes a solenoid valve housing 51, an air circuit cover 52, a solenoid valve 53, a solenoid valve air nozzle 54, a solenoid valve cover 55, a pneumatic joint 56 and an air pump 57. One end of the solenoid valve housing 51 is provided with a plurality of snap-in holes 59 that cooperate with the sealing ring on the glass tube limit block 43. A plurality of solenoid valves 53 are arranged in the solenoid valve housing 51. The top and bottom of each solenoid valve 53 are provided with a solenoid valve air nozzle 54. The solenoid valve air nozzle 54 at the bottom of each solenoid valve 53 is connected to the corresponding air guide hole. An air circuit cover 52 is provided above the solenoid valve 53. The air circuit cover 52 is provided with a plurality of second air passages. The solenoid valve air nozzle 54 at the top of each solenoid valve 53 is connected to the inlet of the corresponding second air passage. After the outlets of the plurality of second air passages are connected, they are connected to one end of the air pipe through the pneumatic joint 56. The other end of the air pipe is connected to the output end of the air pump 57. A pressure sensor 58 is installed on the air pipe. Figure 20-25 As shown, the air pump 57 is used to provide power to complete the sampling work, the solenoid valve 53 receives the solenoid valve signal, makes it operate, opens the corresponding air path, and the heating component 2 provides heating for the inhaled trace explosives to vaporize them, and then passes through the spectrometer component 3 for detection.

[0063] Preferably, in this embodiment, a connector interface 7 is provided on the side wall of the spectrometer component 3, and the connector interface 7 is electrically connected to the heating component 2, the spectrometer component 3 and the solenoid valve component 5 respectively, to supply power to the lamp of the specific spectrometer lamp board 33, various sensor connections, the heating plate 23 and the air pump 57.

[0064] The present invention can realize communication control, power supply and other functions with the outside world through the connector interface 7; the air pump 57 provides negative pressure to suck the trace explosive into the air path, the air path mainly includes the air inlet nozzle 22-air path diverter plate 21-sensitive device 8-solenoid valve 53-air pump 57, the air path is divided into four from the air inlet nozzle 22, corresponding to 4 sensitive devices 8, each sensitive device 8 corresponds to a solenoid valve 53, the solenoid valve 53 is in a closed state before action, and if one of the paths needs to be opened, a signal is given to the corresponding solenoid valve 53 to make it act and open the corresponding air path, wherein a pressure sensor 58 is also connected in parallel between the solenoid valve 53 and the air pump 57, and the spectrometer component 3 detects the wavelength information of the light generated by the reaction of the trace explosive in the sensitive device 8, specifically, the spectrometer light board 24 hits the sensitive device, and the inner wall of the trace explosive adsorbed in the sensitive device 8 undergoes a quenching reaction, and the wavelength information after the reaction is transmitted to the host through the sensor, thereby improving the detection accuracy and work efficiency.

[0065] Steps to replace sensitive components:

[0066] 1. Pull open the knob 65 and tighten the screw 64 onto the connecting rod cover 66 of the connecting rod 61 to fix it;

[0067] 2. Pull the solenoid valve assembly 5 to drive the connecting rod 61 to move;

[0068] 3. Rotate the solenoid valve assembly 5 to drive the connecting rod 61 to move;

[0069] 4. Rotate the solenoid valve assembly 5 to drive the connecting rod 61 to move, and insert the screw 64 into the second limiting hole 35;

[0070] 5. Rotate the thumb screw 44 to loosen the thumb screw 44;

[0071] 6. Pull out the tube replacement assembly 4;

[0072] 7. Take out the sensitive device 8.

[0073] 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.

[0074] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0075] 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.

[0076] 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.

[0077] 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. An automatic replacement sensitive device module, characterized in that: include: A base plate (1), wherein a spectrometer assembly (3) for detecting sensitive devices is fixedly provided on the base plate (1), a heating assembly (2) for heating trace explosives is provided on one side of the spectrometer assembly (3), a first placement channel penetrating the spectrometer assembly (3) is provided in the spectrometer assembly (3), a solenoid valve assembly (5) for controlling a gas path is provided on the other side of the spectrometer assembly (3), the spectrometer assembly (3) and the solenoid valve assembly (5) are connected via a tube exchange assembly (4), a plurality of sensitive devices (8) are provided on the tube exchange assembly (4), and the plurality of sensitive devices (8) extend into the first placement channel, and a connecting rod assembly (6) for rotating the solenoid valve assembly (5) is provided between two sides of the spectrometer assembly (3) and two sides corresponding to the solenoid valve assembly (5); The spectrometer assembly (3) comprises a spectrometer cavity (31) and a spectrometer light board (33); the spectrometer light board (33) is fixedly arranged on the inner top of the spectrometer cavity (31); and the first placement channel is arranged inside the spectrometer cavity (31) and passes through the spectrometer cavity (31); The connecting rod assembly (6) comprises a connecting rod (61), a pin (62), a return spring (63), a screw (64), a knob (65) and a connecting rod cover (66); one end of the connecting rod (61) is fixedly connected to the solenoid valve assembly (5), and the other end is rotatably connected to the side wall of the spectrometer assembly (3) through the pin (62); L-shaped limit grooves (32) are provided on opposite sides of the spectrometer assembly (3); the connecting rod cover (66) is fixedly provided on the side of the connecting rod (61) away from the spectrometer assembly (3); a threaded hole is provided in the connecting rod cover (66); a through hole is provided on the connecting rod (61); one end of the screw (64) passes through the threaded hole on the connecting rod cover (66) and the through hole of the connecting rod (61) in sequence, and then is slidably connected The limiting groove (32) is connected to the connecting rod (61), one end of which is inserted into the limiting groove (32) and is sleeved with the return spring (63). A limiting portion is provided on the connecting rod (61). The diameter of the threaded hole is smaller than the diameter of the through hole. One end of the return spring (63) abuts against the end surface of the connecting rod cover (66), and the other end abuts against the limiting portion. The limiting groove (32) comprises a horizontal section and an arc section. The head end of the horizontal section is provided with a first limiting hole (36) for cooperating with the screw rod (64) to limit the position of the solenoid valve assembly (5). The end of the arc section is provided with a second limiting hole (35) for cooperating with the screw rod (64) to limit the position of the solenoid valve assembly (5). The other end of the screw rod (64) is fixedly connected to the knob (65). The tube changing assembly (4) comprises a tube changing shell (41), a second spectrometer cover (42), a glass tube stop block (43), a hand screw (44) and a second O-ring (45); a plurality of second placement channels penetrating the tube changing shell (41) are arranged in the tube changing shell (41); a plurality of the glass tube stop blocks (43) are arranged on a side of the tube changing shell (41) close to the spectrometer assembly (3); the plurality of second placement channels are each provided with the sensitive device (8); the plurality of the sensitive devices (8) are arranged in one-to-one correspondence with the plurality of the glass tube stop blocks (43); each of the sensitive devices (8) extends into the corresponding second placement channel. The second placement channel is in contact with the corresponding glass tube stop block (43), the second placement channel is provided with the second O-ring (45), the sensitive device (8) is sleeved with the second spectrometer sleeve (42) which is tightly matched with the second O-ring (45), the spectrometer assembly (3) is provided with a screw column (37), one end of the hand screw (44) passes through the tube replacement housing (41) and then extends into the screw column (37), the glass tube stop block (43) is provided with a plurality of air guide holes for communicating with the electromagnetic valve assembly (5), and the glass tube stop block (43) is clamped together with the side wall of the electromagnetic valve assembly (5).

2. The automatic replacement sensitive device module according to claim 1, characterized in that: The heating assembly (2) comprises an air path diverter plate (21), an air inlet nozzle (22), a heating plate (23), a heat insulation plate (25), a first O-ring (26) and a first spectrometer cover (27); one side of the air path diverter plate (21) is fixedly mounted on a side wall of the spectrometer assembly (3) via the heat insulation plate (25); the other side of the air path diverter plate (21) is provided with the air inlet nozzle (22); one end of the air inlet nozzle (22) extends into the air path diverter plate (21); a plurality of first air passages are provided in the air path diverter plate (21); the air inlet nozzles (22) are connected to the plurality of first air passages. The gas path diverter plate (21) and the heat insulation plate (25) are connected to the first gas passages, a placement groove for placing the heating plate (23) is provided on the contact surface between the gas path diverter plate (21) and the heat insulation plate (25), a plurality of the sensitive devices (8) are respectively extended into the gas path diverter plate (21), and the plurality of the sensitive devices (8) are respectively connected to the corresponding plurality of the first gas passages, and a first spectrometer sleeve (27) is sleeved on one end of the plurality of the sensitive devices (8) extending into the gas path diverter plate (21), and a first O-ring (26) tightly matched with the first spectrometer sleeve (27) is provided in the plurality of the first gas passages.

3. The automatic replacement sensitive device module according to claim 2, characterized in that: The gas path diverter plate (21) is provided with a first temperature sensor (24) for detecting the heating temperature of the heating plate (23).

4. The automatic replacement sensitive device module according to claim 1, characterized in that: A second temperature sensor (34) for detecting temperature is provided in the first placement channel.

5. The automatic replacement sensitive device module according to claim 1, characterized in that: The solenoid valve assembly (5) comprises a solenoid valve housing (51), an air circuit cover (52), a solenoid valve (53), a solenoid valve air nozzle (54), a solenoid valve cover (55), a pneumatic joint (56) and an air pump (57); one end of the solenoid valve housing (51) is provided with a plurality of snap-in holes (59) that cooperate with the sealing ring on the glass tube limit block (43); a plurality of solenoid valves (53) are arranged in the solenoid valve housing (51); the top and bottom of each solenoid valve (53) are provided with the solenoid valve air nozzle (54); The solenoid valve air nozzle (54) at the bottom is connected to the corresponding air guide hole, the air circuit cover (52) is provided above the solenoid valve (53), and a plurality of second air passages are provided in the air circuit cover (52), the solenoid valve air nozzle (54) at the top of each solenoid valve (53) is connected to the inlet of the corresponding second air passage, and the outlets of the plurality of second air passages are connected to one end of the air pipe through the pneumatic joint (56), and the other end of the air pipe is connected to the output end of the air pump (57), and a pressure sensor (58) is installed on the air pipe.

6. The automatic replacement sensitive device module according to any one of claims 1 to 5, characterized in that: A connector interface (7) is provided on a side wall of the spectrometer component (3), and the connector interface (7) is electrically connected to the heating component (2), the spectrometer component (3) and the solenoid valve component (5) respectively.

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