CN112304666A

CN112304666A - Trace explosive detector

Info

Publication number: CN112304666A
Application number: CN202011366967.3A
Authority: CN
Inventors: 丁志强; 袁丁; 吴红彦; 夏征
Original assignee: Beijing Htnova Detection Technology Co ltd
Current assignee: Beijing Htnova Detection Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-02-02
Anticipated expiration: 2040-11-27
Also published as: CN112304666B

Abstract

The invention relates to a trace explosive detector, and belongs to the technical field of trace explosive detection. This trace explosive detector, including the main casing body, the inside of main casing body is equipped with sensitive device, the entry end of sensitive device passes the top of main casing body is connected with the sample thief, and with heating head intercommunication on the main casing body, the main casing body with the connection can be dismantled to the sample thief. Has the advantages that: merge the sample thief on the main casing body, the cooperation is main the heating head on the casing body and is breathed in the sample steam, can dismantle the connected mode and be convenient for the operator to use, improves the installation and dismantles efficiency.

Description

Trace explosive detector

Technical Field

The invention belongs to the technical field of fluorescent trace explosive detection, and particularly relates to a trace explosive detector.

Background

The detector for the fluorescent trace explosives is detection equipment integrating machinery, electronics, chemistry and optics, and has the main working principle that: after trace explosives of a detection object are obtained through the sampling sheet, the sampling sheet is inserted into a heating groove corresponding to the detector to be heated, the trace explosives are evaporated, the evaporated trace explosives are sucked into the sensitive device through the air inlet nozzle to be subjected to quenching reaction, so that the trace explosives are detected by the optical sensor, and signals are transmitted to the circuit board to be subjected to acousto-optic alarm.

Due to the fact that the use environment of the trace explosive detector is not limited to handheld detection and desktop detection, various use requirement environments exist in the market, and sometimes the trace explosive detector is only a part of some system integration equipment, the trace explosive detector is required to be universal and convenient to install.

Therefore, a trace explosive detector is proposed to solve the disadvantages of the prior art.

Disclosure of Invention

The invention provides a trace explosive detector for solving the technical problems, a sampler is combined on a main shell, air suction and steam sampling are carried out by matching with a heating head on the main shell, the detachable connection mode is convenient for an operator to use, and the installation and detachment efficiency is improved.

The technical scheme for solving the technical problems is as follows: this trace explosive detector includes the main casing body, the inside of main casing body is equipped with sensitive device, the entry end of sensitive device passes the top of main casing body is connected with the sample thief, and with heating head intercommunication on the main casing body, the main casing body with the connection can be dismantled to the sample thief.

Has the advantages that: merge the sample thief on the main casing body, the cooperation is main the heating head on the casing body and is breathed in the sample steam, can dismantle the connected mode and be convenient for the operator to use, improves the installation and dismantles efficiency.

Further, the sample thief includes drain pan and top cap, the upper portion of drain pan is equipped with the opening, the opening part is equipped with and is used for the closing cap the open-ended top cap, one side of drain pan is equipped with uncovered, uncovered department is fixed to be equipped with the connecting plate that is used for connecting the host computer, be equipped with on the top cap and be used for inserting the jack of establishing the sample piece, the fixed heating head geminate transistors PCB that is equipped with in bottom in the drain pan, the top of heating head geminate transistors PCB is equipped with the driving piece that is used for pressing from both sides tight and heat the sample piece, the both sides of drain pan are equipped with the connecting piece that is used for connecting the host computer, uncovered one side of drain pan is equipped with the heating.

The beneficial effect of adopting the further scheme is that: the driving piece solves the problems that a trace explosive detector sampling sheet needs back heating and clamping and the like; the buckle connection mode is convenient for operators to use, and the installation and disassembly efficiency is improved.

Further, the driving member comprises a linear driving part, a guide plate, a heat insulation plate, a heating plate and a heating plate, wherein the output end of the linear driving part is in transmission connection with the guide plate, two ends of the guide plate are respectively sleeved on a guide shaft which is fixed on the bottom shell, one side of the guide plate far away from the linear driving part is fixedly arranged on one surface of the heat insulation plate, a temperature sensor is fixedly arranged on the heat insulation plate, the heating plate is fixedly arranged on the other surface of the heat insulation plate opposite to the heat insulation plate, the heating plate is embedded with the heating plate, the upper part of the heating plate is provided with an insertion groove which is arranged vertically below the insertion hole, an infrared emission tube light guide hole is arranged in the bottom shell, two ends of the infrared emission tube light guide hole are respectively provided with an infrared emission tube and an infrared receiving tube, when a sampling sheet is inserted into the insertion groove to block the, the infrared transmitting tube triggers the linear driving part to push the guide plate to move, and the heating head pair tube PCB is electrically connected with the linear driving part.

The beneficial effect of adopting the further scheme is that: when the sampling piece is inserted into the slot of the heating plate, the sampling piece blocks the light guide hole of the infrared emission tube, the infrared emission tube triggers the linear driving part to drive the guide plate to move, the guide plate is pushed, the heating plate on the guide plate can be matched with the heating head on the host machine to compress the sampling piece, and meanwhile, the sampling piece is heated, so that the detection efficiency and the sensitivity are increased.

Further, the linear driving part is an electromagnet with an iron core shaft, and the guide plate is sleeved on the iron core shaft.

The beneficial effect of adopting the further scheme is that: simple structure, the electro-magnet promotes the deflector motion, and the process is stable, convenient operation.

Furthermore, a radiating fin pressing plate is arranged on the electromagnet, and a plurality of radiating fins are fixedly arranged on the radiating fin pressing plate.

The beneficial effect of adopting the further scheme is that: and heat dissipation is carried out in time, so that equipment is prevented from being burnt out.

Further, a PCB cover is arranged on the heating head pair tube PCB.

The beneficial effect of adopting the further scheme is that: the heating head is used for protecting the tube PCB, and the service life is prolonged.

Further, the connecting piece includes first buckle lid and second buckle lid, first buckle lid with second buckle lid sets up respectively the two relative outsides of drain pan, first buckle lid with the one end of second buckle lid is connected through a spring coupling respectively on the drain pan, the inclined plane is set to the two relative outsides of drain pan, first buckle lid with the other end of second buckle lid all is equipped with connect buckle, the drain pan with between the top cap and the opening department of drain pan all is equipped with waterproof rubber strip.

The beneficial effect of adopting the further scheme is that: the assembly and disassembly are convenient, and the fixing effect is good.

Furthermore, the uncovered department of drain pan is equipped with the permanent magnet that is convenient for counterpoint with the ironbar on the host computer.

The beneficial effect of adopting the further scheme is that: the alignment with the host computer is convenient, the installation is convenient, and the time is saved.

Furthermore, a limiting part for limiting the position of the sampling sheet is arranged in the bottom shell, and the limiting part is arranged below the heating plate vertically.

The beneficial effect of adopting the further scheme is that: the problems that the testing position is inaccurate, the infrared geminate transistor sensor cannot be triggered and the like caused by the bending deformation of the sampling sheet are solved.

Further, the limiting part is a plurality of limiting ribs arranged at intervals.

The beneficial effect of adopting the further scheme is that: the sampling piece can become soft when heating, leads to the sampling piece crooked, and the restriction sampling piece through spacing muscle continues to move down, and leads to the measuring position inaccurate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the detector;

FIG. 3 is a front view of the sampler

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

FIG. 6 is a cross-sectional view C-C of FIG. 3;

FIG. 7 is a side view of the sampler;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7;

FIG. 9 is a top view of a sampler illustration;

FIG. 10 is a bottom view of the sampler;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a main housing; 2. a sensitive device; 3. a heating head; 4. a sampler; 41. connecting a buckle; 42. a spring; 43. a first snap cover; 44. a second snap cover; 45. a bottom case; 46. a guide shaft; 47. heating head to tube PCB; 48. a permanent magnet; 49. a PCB cover; 410. an electromagnet; 411. a guide plate; 412. a heat insulation plate; 413. a heating plate; 414. a temperature sensor; 415. heating plates; 416. a heating head adapter plate; 417. a connecting plate; 418. a top cover; 419. a waterproof adhesive tape; 420. a heat sink; 421. the heat sink pressure plate.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Because the spectrometer module and the sensitive device of the trace explosive detector both need to detect, because the sensitive device needs to be packed into the spectrometer module, if do respectively and detect the frock, the frock is many, and is with high costs, and detection efficiency is low, needs some automated structure to detect, improves and detects precision and work efficiency.

Example 1

As shown in fig. 1-1O, the present embodiment provides a trace explosive detector comprising: the main casing 1, the inside of main casing 1 is equipped with sensing device 2, and the entry end of sensing device 2 passes the top of main casing 1 and is connected with sample thief 4, and with the heating head 3 intercommunication on the main casing 1, main casing 1 can dismantle with sample thief 4 and be connected.

Merge sample thief 4 on main casing body 1, cooperation main casing body 1 is last to heat head 3 samples steam of breathing in, can dismantle the connected mode and be convenient for the operator to use, improves the installation and dismantles efficiency.

Example 2

Preferably, in this embodiment, the sampler 4 includes a bottom shell 45 and a top cover 418, the top of the bottom shell 45 is provided with an opening, the opening is provided with the top cover 418 for covering the opening, one side of the bottom shell 45 is provided with an opening, the opening is fixedly provided with a connecting plate 417 for connecting to a host, the connecting plate 417 is provided with a notch for passing a heating head on the host, the top cover 418 is provided with a jack for inserting a sampling sheet, the bottom of the bottom shell 45 is fixedly provided with a pair of heating head tubes PCB47, a driving member for clamping and heating the sampling sheet is arranged above the pair of heating head tubes PCB47, two sides of the bottom shell 45 are provided with connecting members for connecting to the host, one side of the opening of the bottom shell 45 is provided with a heating head adapter plate 416 for connecting to an interface of the host, the pair of heating head adapter plate 416 is electrically connected to the heating head PCB47, the connecting plate 417 is provided, the sampling sheet is heated by the heating head and the back of the driving piece with the heating function, so that the fixing effect is good, and the detection data is accurate; the sampler 4 is connected with the host through a connecting piece, so that an operator can use the sampler conveniently, and the mounting and dismounting efficiency is improved.

Preferably, in this embodiment, the driving member includes a linear driving portion, a guide plate 411, a heat insulation plate 412, a heating plate 413 and a heating plate 415, the linear driving portion is an electromagnet 410 with an iron core shaft, the guide plate 411 is sleeved on the iron core shaft, two ends of the guide plate 411 are respectively sleeved on a guide shaft 46, the guide shaft 46 is fixed on the bottom case 45 through screws, one side of the guide plate 411 away from the linear driving portion is fixedly arranged on one side of the heat insulation plate 412 through screws, the other side of the heat insulation plate 412 opposite to the linear driving portion is fixedly provided with the heating plate 415 through screws, the heating plate 415 is embedded with the heating plate 413, an insertion slot is arranged at the upper portion of the heating plate 415, the insertion slot is arranged vertically below the insertion hole, an infrared emission tube light guide hole is arranged in the bottom case 45, two ends of the infrared emission tube light guide hole are respectively provided with an infrared emission tube and, the infrared emission tube triggers the linear driving part to push the guide plate 411 to move, the heating head pair tube PCB47 is electrically connected with the linear driving part, the heating head pair tube PCB47 is the electric signal received by the infrared emission tube, so as to control the work of the electromagnet, the iron core shaft pushes the guide plate 411 to clamp the sampling sheet, and the heating sheet 413 is electrically connected with the heating head pair tube PCB 47.

Preferably, in this embodiment, the electromagnet 410 is provided with a heat sink pressing plate 421, and the heat sink pressing plate 421 is fixedly provided with a plurality of heat sinks 420, which are in contact with the electromagnet 410, so as to achieve the function of fast heat dissipation and prolong the service life of the electromagnet 410.

Preferably, in this embodiment, the PCB cover 49 is disposed on the pair of heater header PCBs 47 to protect the pair of heater header PCBs 47, thereby prolonging the service life.

Example 3

As shown in fig. 1-10, the present embodiment provides a trace explosive detector comprising: the main casing 1, the inside of main casing 1 is equipped with sensing device 2, and the entry end of sensing device 2 passes the top of main casing 1 and is connected with sample thief 4, and with the heating head 3 intercommunication on the main casing 1, main casing 1 can dismantle with sample thief 4 and be connected.

Preferably, in this embodiment, the electromagnet 410 is provided with a heat sink pressing plate 421, and the heat sink pressing plate 421 is fixedly provided with a plurality of heat sinks 420, which are in contact with the electromagnet 41O, so as to achieve the function of fast heat dissipation and prolong the service life of the electromagnet 410.

Preferably, in this embodiment, the connecting member includes a first buckle cover 43 and a second buckle cover 44, the first buckle cover 43 and the second buckle cover 44 are respectively disposed on two opposite outer sides of the bottom case 45, one end of the first buckle cover 43 and one end of the second buckle cover 44 are respectively connected to the bottom case 45 through a spring 42, two opposite outer sides of the bottom case 45 are disposed as inclined surfaces, the other ends of the first buckle cover 43 and the second buckle cover 44 are both provided with a connecting buckle 41, waterproof rubber strips 419 are disposed between the bottom case 45 and the top cover 418 and at an opening of the bottom case 45, when the connecting member is used, only a hand is needed to press one end of the first buckle cover 43 and one end of the second buckle cover 44 close to the spring 42, and the connecting buckle 41 is clamped in a groove at a corresponding position of the host, so that the assembling and disassembling are convenient, and the fixing effect is good.

Preferably, in this implementation, the opening of the bottom shell 45 is provided with a permanent magnet 48 which is convenient for aligning with an iron bar on the host, and the corresponding position on the host is provided with the iron bar, so that the installation is convenient, the alignment is convenient, and the time is saved.

Example 4

1-10, the present embodiment provides a trace explosive detector comprising: the main casing 1, the inside of main casing 1 is equipped with sensing device 2, and the entry end of sensing device 2 passes the top of main casing 1 and is connected with sample thief 4, and with the heating head 3 intercommunication on the main casing 1, main casing 1 can dismantle with sample thief 4 and be connected.

Preferably, in this implementation, a limiting portion for limiting the position of the sampling sheet is arranged in the bottom shell 45, the limiting portion is arranged vertically below the heating plate, a limiting portion for limiting the position of the sampling sheet is arranged in the bottom shell 45, and the limiting portion is arranged vertically below the heating plate 415.

Example 5

The limiting part is provided with a plurality of limiting ribs which are arranged at intervals, the sampling sheet needs to be heated in the air suction sampling process, and the sampling sheet is a Teflon thin sheet, so that the sampling sheet can be softened after being heated and can be bent after being inserted into the bottom surface of the shell, namely, the position of the real detected substance can move downwards, and the detected substance cannot be sucked to the maximum extent; because the sampling piece is a Teflon sheet, the problem of inconsistent light transmittance exists in the actual production and manufacturing process, and the position of the sampling piece is sensed by the infrared geminate-transistor sensor. Therefore, when the infrared geminate transistor sensor is actually used, the probability that the sampling sheet is inserted into the position to trigger the infrared geminate transistor sensor is very low; because the inside high temperature heating element that has of sample thief, again because the careful dismouting of sample thief subassembly needs the user, conventional plastics can lead to softening scheduling problem, and casing outside high temperature can appear in the metal commonly used, continues to move down through spacing muscle restriction sampling piece, makes the detected position accurate, and the detected data is more accurate.

The heating head 3 of the present application is similar to the heating device of patent application No. CN2019221786737, and therefore, will not be further described.

When the sampling device is used, the sampling sheet collects a detected substance, the surface of the sampling sheet, which is provided with the detected substance, faces the heating head of the host, when the sampling sheet is inserted into the bottom of the slot, the light guide hole of the infrared emission tube is blocked, the optical sensor sends a signal to the heating head to tube PCB47, the electromagnet 410 is driven to push the heating plate 415 to be matched with the heating head extending into the bottom shell 45 of the sampler to clamp the sampling sheet, the substance on the sampling is heated and evaporated, and the air suction port on the heating head 3 arranged on the main shell 1 sucks in sampling steam, so that the sampling process is completed, and the detection precision and the working efficiency are improved.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A trace explosive detector, comprising:

the main casing body (1), the inside of main casing body (1) is equipped with sensitive device (2), the entry end of sensitive device (2) passes the top of main casing body (1) is connected with sample thief (4), and with heating head (3) intercommunication on the main casing body (1), main casing body (1) with sample thief (4) can be dismantled and be connected.

2. The trace explosive detector according to claim 1, wherein the sampler (4) comprises a bottom shell (45) and a top cover (418), an opening is arranged at the upper part of the bottom shell (45), the top cover (418) for covering the opening is arranged at the opening, an opening is arranged at one side of the bottom shell (45), a connecting plate (417) for connecting the main shell (1) is fixedly arranged at the opening, a jack for inserting a sampling sheet is arranged on the top cover (418), a pair of heating head tubes PCB (47) is fixedly arranged at the bottom in the bottom shell (45), a driving member for clamping and heating the sampling sheet is arranged above the pair of heating head tubes PCB (47), connecting members for connecting the main shell (1) are arranged at two sides of the bottom shell (45), and a heating head adapter plate (416) is arranged at one side of the opening of the bottom shell (45), the heater head adapter plate (416) is electrically connected with the heater head pair tube PCB (47).

3. The trace explosive detector according to claim 2, wherein the driving member comprises a linear driving portion, a guide plate (411), a heat insulating plate (412), a heating plate (413) and a heating plate (415), an output end of the linear driving portion is in transmission connection with the guide plate (411), two ends of the guide plate (411) are respectively sleeved on a guide shaft (46), the guide shaft (46) is fixed on the bottom shell (45), one side of the guide plate (411) far away from the linear driving portion is fixedly arranged on one surface of the heat insulating plate (412), a temperature sensor (414) is fixedly arranged on the heat insulating plate (412), the heating plate (415) is fixedly arranged on the other opposite surface of the heat insulating plate (412), the heating plate (413) is embedded in the heating plate (415), and a slot is arranged at the upper part of the heating plate (415), the slot is established the vertical below of jack, be equipped with infrared emission pipe light guide hole in drain pan (45), the both ends in infrared emission pipe light guide hole are equipped with infrared emission pipe and infrared receiving tube respectively, block in the slot is inserted to the sampling piece during infrared emission pipe light guide hole, infrared emission pipe triggers linear drive portion promotes deflector (411) motion, heating head geminate transistors PCB (47) with linear drive portion electricity is connected.

4. The trace explosive detector according to claim 3, wherein said linear driving portion is an electromagnet (410) having an iron core shaft, and said guide plate (411) is fitted over the iron core shaft.

5. The trace explosive detector according to claim 4, wherein a heat sink pressure plate (421) is disposed on the electromagnet, and a plurality of heat sinks (420) are fixedly disposed on the heat sink pressure plate (421).

6. A trace explosive detector according to any of claims 3 to 5, wherein a PCB cover (49) is provided on the pair of heater head tubes PCB (47).

7. The trace explosive detector according to any one of claims 3 to 5, wherein the connecting member comprises a first snap cover (43) and a second snap cover (44), the first snap cover (43) and the second snap cover (44) are respectively arranged on two opposite outer sides of the bottom shell (45), one end of the first snap cover (43) and one end of the second snap cover (44) are respectively connected to the bottom shell (45) through a spring (42), two opposite outer sides of the bottom shell (45) are arranged to be inclined surfaces, the other ends of the first snap cover (43) and the second snap cover (44) are respectively provided with a connecting buckle (41), and waterproof rubber strips (419) are respectively arranged between the bottom shell (45) and the top cover (418) and at the opening of the bottom shell (45).

8. A trace explosive detector according to any of claims 3 to 5, wherein the bottom shell (45) is provided with permanent magnets (48) at the openings to facilitate alignment with the iron bars on the mainframe.

9. The trace explosive detector according to any one of claims 3 to 5, wherein a stopper portion for limiting the position of the sampling piece is provided in the bottom case (45), and the stopper portion is provided vertically below the heating plate (415).

10. The trace explosive detector according to claim 9, wherein the limiting portion is a plurality of spacing ribs disposed at intervals.