WO2020134175A1 - 一种电子鼻采样器 - Google Patents

一种电子鼻采样器 Download PDF

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Publication number
WO2020134175A1
WO2020134175A1 PCT/CN2019/104382 CN2019104382W WO2020134175A1 WO 2020134175 A1 WO2020134175 A1 WO 2020134175A1 CN 2019104382 W CN2019104382 W CN 2019104382W WO 2020134175 A1 WO2020134175 A1 WO 2020134175A1
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WO
WIPO (PCT)
Prior art keywords
hole
sheath
threaded section
electronic nose
sampling head
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PCT/CN2019/104382
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English (en)
French (fr)
Inventor
苗齐田
黄铭
张清军
巩春生
马秋峰
李鸽
曹彪
陈萌
刘桂新
Original Assignee
同方威视技术股份有限公司
中检科威（北京）科技有限公司
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Application filed by 同方威视技术股份有限公司, 中检科威（北京）科技有限公司 filed Critical 同方威视技术股份有限公司
Publication of WO2020134175A1 publication Critical patent/WO2020134175A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2226—Sampling from a closed space, e.g. food package, head space

Definitions

  • the present disclosure relates to an electronic nose sampler.
  • the electronic nose system can be used to check the luggage carried by inbound and outbound passengers to determine whether the luggage contains contraband. If you want to accurately determine whether there are items of interest in the suitcase without opening the suitcase, you need to collect as much gas as possible.
  • the electronic nose system usually directly adopts an electronic nose sampler with an open air inlet for sampling. Since the luggage of passengers entering and leaving the country is usually sealed, if a conventional electronic nose sampler with an open air inlet is used for sampling, even if the air inlet is as close as possible to the gap of the luggage, the sampled gas The vast majority are also outside the box, and the inspection error rate is very large.
  • the purpose of the present disclosure is to solve at least one aspect of the above-mentioned problems and defects existing in the prior art.
  • the present disclosure provides an electronic nose sampler, which can use a sampling head probe to check whether there is a suspected contraband in the luggage case without opening the box, so as to achieve the effect of improving the inspection speed, efficiency and accuracy.
  • an electronic nose sampler including: a handle; and a sampling head probe extending from the handle, having an elongated structure and having a hollow pipe; wherein, A sampling tube is provided in the handle, a proximal end of the sampling head probe communicates with the sampling tube, and a distal end is away from the handle.
  • the electronic nose sampler further includes: a first sheath and a second sheath sleeved on the sampling head probe, both the first sheath and the second sheath Coaxial with the sampling head probe, the inner diameter of the first sheath is larger than the inner diameter of the second sheath, and the first sheath is connected to the handle.
  • the handle has a wall provided with a first through hole, and the first sheath is connected to the wall so that the proximal end of the sampling head probe is The sampling tube communicates through the first through hole.
  • the wall of the handle defines a cavity
  • the electronic nose sampler further includes a mounting plate provided in the cavity, the mounting plate is provided with a second through hole, the sampling A tube is inserted into the second through hole, and the proximal end of the first sheath is connected to the mounting plate through the first through hole so that the hollow pipe of the sampling head probe and the sampling tube Connected.
  • the electronic nose sampler further includes a mounting plate provided outside the wall of the handle, the mounting plate is provided with a second through hole, and the sampling tube passes through the first A through hole is inserted into the second through hole through the wall, and the first sheath is connected to the mounting plate so that the hollow pipe of the sampling head probe communicates with the sampling tube.
  • the first sheath includes a first guard plate, a guard post, and a second guard plate connected in sequence, the first guard plate is provided with a third through hole, and the first A fourth through hole is provided on the second guard plate, an accommodating space is formed in the guard post, the first guard plate is connected to the mounting plate, and the second guard plate is connected to the second sheath.
  • the fourth through hole communicates the protection column and the second sheath.
  • the second sheath has a tapered outer wall surface and a cylindrical inner wall surface, and the diameter of the cross-section of the second sheath is from close to the first sheath to far from the first One sheath gradually gets smaller.
  • the electronic nose sampler further includes a positioning assembly, the positioning assembly is sleeved on the proximal end of the sampling head probe, and the positioning assembly is accommodated in the first sheath One end of the positioning assembly is in contact with the mounting plate, and the other end is in contact with the second shield.
  • a liner is provided in the space enclosed by the end of the protection column and the second guard plate, and a fifth line communicating with the fourth through hole is provided on the liner A through hole, the sampling head probe passes through the gasket through the fifth through hole, and an end surface of the gasket near the mounting plate is provided with a groove adapted to the end of the positioning assembly , The end of the positioning component is received in the groove.
  • a cone-shaped transition portion is provided between the protection column and the second shield, and the diameter of the transition portion gradually decreases from the protection column to the second shield ,
  • the gasket is tapered and the height of the gasket is equal to the height of the transition portion.
  • the positioning assembly includes a support member provided between the mounting plate and the second shield plate in the axial direction, and a support suitable for the sampling head probe is provided in the support member A sixth through hole, the sixth through hole communicates with the second through hole and the fourth through hole, and the sampling head probe extends through the fourth through hole to the sixth through hole In the hole.
  • the positioning assembly further includes a ferrule sleeved on the outside of the support member, the support member includes an externally threaded section and a first non-threaded section, the ferrule includes an internally threaded section And a second non-threaded section, the first non-threaded section cooperates with the second non-threaded section and one end of the first non-threaded section abuts the second guard plate and the other end extends to the internal thread
  • the external thread segment is thread-fitted with the internal thread segment and one end of the external thread segment abuts the end surface of the first non-thread segment extending into the internal thread segment, and the other end extends beyond The internal thread segment is in contact with the mounting plate.
  • the internally threaded section is detachably connected to the second non-threaded section, and an end of the internally threaded section near the second sheath is provided with A first cover plate, a seventh through hole is opened in the first cover plate, an inner diameter of the seventh through hole is not less than an outer diameter of the second non-threaded section, and the second non-threaded section is close to the A second cover plate is provided at the end of the mounting plate, the outer diameter of the second cover plate is greater than the inner diameter of the seventh through hole, and one end of the second non-threaded section extends through the seventh through hole to Outside the inner thread section, the second cover plate at the other end is accommodated in the inner thread section and abuts the first cover plate.
  • an end surface of the ferrule near the second sheath is provided with a third cover plate that seals the ferrule, and the third cover plate is provided with a third cover An eighth through hole coaxial with the hole, the sampling head probe passes through the third cover plate through the eighth through hole, one end of the third cover plate is in contact with the second shield plate, and the other end Abut with the first non-threaded section.
  • a sealing ring is provided between the third cover plate and the end surface of the first non-threaded section.
  • the sampling head probe includes a boss, a body, and a tapered head, and the hollow pipe penetrates the boss, the body, and the tapered head, and the The outer diameter is smaller than the outer diameter of the body, the boss is provided at the proximal end of the sampling head probe near the sampling tube, and the tapered head is provided at the distal end of the sampling head probe.
  • the length of the sampling head probe ranges from 30 mm to 60 mm.
  • the inner diameter of the sampling head probe ranges from 1 mm to 3 mm, and the outer diameter ranges from 5 mm to 8 mm.
  • the inner diameter of the sampling head probe is 2 mm
  • the outer diameter is 6 mm
  • the length is 40 mm.
  • the sampling head probe is made of stainless steel, and polytetrafluoroethylene is provided on the outer wall surface of the sampling head probe.
  • a trigger portion is provided on the handle.
  • the sampling head probe of the electronic nose sampler communicates with the sampling tube.
  • the sampling head probe is passed through the luggage compartment gap (such as a zipper) The joint) extends into the luggage compartment. Without opening the case, the probability of collecting air mixed with the air outside the luggage compartment can be reduced, so that the luggage compartment can be quickly, efficiently and accurately inspected.
  • FIG. 1 shows a schematic structural diagram of an electronic nose sampler according to an embodiment of the present disclosure
  • FIG. 2 shows an enlarged partial sectional view of the electronic nose sampler shown in FIG. 1.
  • 18-positioning assembly 181-support, 1811-outer threaded section, 1812-first non-threaded section, 182-ferrule, 1821-internally threaded section, 1822-second non-threaded section, 183-third cover plate,
  • an electronic nose sampler includes: a handle; a sampling head probe that extends from the handle, has an elongated structure, and has a hollow pipe; wherein, the A sampling tube is provided in the handle, the proximal end of the sampling head probe is in communication with the sampling tube, and the distal end is away from the handle.
  • FIG. 1 shows a schematic structural diagram of an electronic nose sampler according to an embodiment of the present disclosure
  • FIG. 2 shows an enlarged partial cross-sectional view of the electronic nose sampler shown in FIG. 1.
  • an electronic nose sampler which includes: a handle 11; a sampling head probe 12, the sampling head probe 12 extends from the handle 11 and has a thin It has a long structure and has a hollow pipe 121; wherein, a sampling tube 13 is provided in the handle 11, a proximal end of the sampling head probe 12 communicates with the sampling tube 13, and a distal end is away from the handle 11.
  • the sampling head probe 12 has an inner diameter ranging from 1 mm to 3 mm, an outer diameter ranging from 5 mm to 8 mm, and a length ranging from 30 mm to 60 mm. In one embodiment, the sampling head probe 12 has an inner diameter of 2 mm, an outer diameter of 6 mm, and a length of 40 mm. In addition, in order to ensure that the sampling head probe 12 has sufficient structural strength to facilitate insertion into the luggage case, and at the same time, the material of the sampling head probe 12 does not produce volatile substances that affect the odor analysis of the electronic nose sampler, the sampling head probe The material of the needle 12 is made of a pure material such as stainless steel. The outer wall of the sampling head probe 12 is provided with polytetrafluoroethylene for heat insulation.
  • the electronic nose sampler further includes: a first sheath 14 and a second sheath 15 sleeved on the sampling head probe 12, the first sheath 14 and the second sheath 15 are coaxial with the sampling head probe 12, the inner diameter of the first sheath 14 is greater than the inner diameter of the second sheath 15, the first sheath 14 and all The handle 11 is connected.
  • the first sheath 14 and the second sheath 15 are an integrally formed structure. Since the sampling head probe 12 is relatively slim, the first sheath 14 and the second sheath 15 both protect the sampling head probe 12.
  • the handle 11 has a wall 111 provided with a first through hole, and the first sheath 14 is connected to the wall 111 so that the sampling The proximal end of the head probe 12 communicates with the sampling tube 13 in the first through hole.
  • the proximal end of the sampling head probe 12 is in direct contact with the sampling tube 13.
  • the proximal end of the sampling head probe 12 is connected to the sampling tube through a filter cotton or other filtering devices 13 Abut.
  • the wall 111 of the handle 11 defines a cavity 16, and the electronic nose sampler further includes an installation disposed in the cavity 16 Plate 17, the mounting plate 17 is provided with a second through hole, the sampling tube 13 is inserted into the second through hole, the proximal end of the first sheath 14 passes through the first through hole Connecting to the mounting plate 17 makes the hollow pipe 121 of the sampling head probe 12 communicate with the sampling tube 13.
  • the mounting plate 17 is provided in the cavity 16 of the handle 11 and extends the proximal end of the first sheath 14 into the cavity 16 of the handle 11 to communicate the hollow tube 121 and the sampling tube 13, so that the handle 11 can be more fully utilized
  • the internal space makes the structure of the electronic nose sampler more compact.
  • the mounting plate 17 may also be disposed outside the handle 11.
  • the electronic nose sampler further includes a mounting plate 17 disposed outside the wall 111 of the handle 11, and the mounting plate 17 A second through hole is provided, the sampling tube 13 is inserted into the second through hole through the wall 111 through the first through hole, and the first sheath 14 is connected to the mounting plate 17 such that The hollow pipe 121 of the sampling head probe 12 communicates with the sampling tube 13.
  • the mounting plate 17 is provided outside the wall 111 of the handle 11 and leads the sampling tube 13 out of the wall 111 to communicate with the hollow pipe 121 of the sampling head probe 12. This structure does not require the sampling head probe 12 inside the handle 11 The assembly can reduce the difficulty of assembling the electronic nose sampler.
  • the first sheath 14 includes a first guard plate 141, a guard post 142, and a second guard plate 143 connected in sequence, so
  • the first shield plate 141 is provided with a third through hole
  • the second shield plate 143 is provided with a fourth through hole
  • the protection column 142 forms an accommodating space
  • the first shield plate 141 and the The mounting plate 17 is connected
  • the second shield plate 143 is connected to the second sheath 15, and the fourth through hole communicates the protection post 142 and the second sheath 15.
  • the first shield 141 and the second shield 143 are parallel to each other and are both perpendicular to the center line of the protection pillar 142.
  • the first shield 141 is attached to the mounting plate 17 in a snug manner.
  • the second sheath 15 has a tapered outer wall surface and a cylindrical inner wall surface, and the diameter of the cross-section of the second sheath 15 is close to the first A sheath 14 gradually becomes smaller away from the first sheath 14.
  • the tapered outer wall surface of the second sheath 15 of this structure enables the sampling head probe 12 to be easily inserted into the luggage case for inspection.
  • the electronic nose sampler further includes a positioning assembly 18 that is sleeved on the proximal end of the sampling head probe 12, and the positioning assembly 18 is housed in the first guard In the sleeve 14, one end of the positioning assembly 18 is in contact with the mounting plate 17 and the other end is in contact with the second shield plate 143, thereby improving the positioning accuracy of the sampling head probe 12 and preventing the sampling head probe 12 An offset occurred during use.
  • a gasket 144 is provided in a space surrounded by the end of the protection column 142 and the second shield 143, and the gasket 144 is provided with a communication with the fourth through hole
  • the fifth through hole, the sampling head probe 12 passes through the gasket 144 through the fifth through hole, and the end surface of the gasket 144 near the mounting plate 17 is provided with the positioning assembly 18
  • the end of the fitting is a groove 1441, and the end of the positioning assembly 18 is accommodated in the groove 1441.
  • the pad 144 is made of elastic material.
  • the cushion 144 made of elastic material can buffer and absorb vibration.
  • a cone-shaped transition portion 145 may be provided between the protection column 142 and the second shield plate 143, and the diameter of the transition portion 145 is from the protection column 142 to the second shield
  • the plate 143 gradually becomes smaller, the gasket 144 is tapered, and the height of the gasket 144 is equal to the height of the transition portion 145.
  • the pad 144 is filled in the transition portion 145, which can ensure the positioning reliability of the pad 144, and further ensure the circumferential positioning accuracy of the sampling head probe 12.
  • the positioning assembly 18 includes a support member 181 provided between the mounting plate 17 and the second shield plate 143 along the axial direction.
  • a sixth through hole accommodated in the sampling head probe 12 the sixth through hole communicates with the second through hole and the fourth through hole, and the sampling head probe 12 passes through the fourth through hole It extends into the sixth through hole.
  • the support 181 is fixedly connected to the sampling head probe 12. This embodiment can increase the contact area of the sampling head probe 12 with the mounting plate 17 and the second shield plate 143 and the degree of its own stability.
  • the positioning assembly 18 further includes a ferrule 182 sleeved on the outer side of the support 181, the support 181 includes an externally threaded section 1811 and a first non-threaded section 1812, the ferrule 182 Including an internally threaded section 1821 and a second non-threaded section 1822, the first non-threaded section 1812 cooperates with the second non-threaded section 1822 and one end of the first non-threaded section 1812 abuts the second guard plate 143
  • the other end extends into the internally threaded section 1821, the externally threaded section 1811 is threadedly engaged with the internally threaded section 1821 and one end of the externally threaded section 1811 is connected to the internally extending section of the internally threaded section 1821
  • the end surface of the first non-threaded section 1812 abuts, and the other end protrudes from the internally threaded section 1821 to abut the mounting plate 17.
  • the internally threaded section 1821 and the second non-threaded section 1822 are detachably connected.
  • a first cover plate 146 closing the internal threaded section 1821 is provided, and a seventh through hole is formed in the first cover plate 146, the seventh through The inner diameter of the hole is not less than the outer diameter of the second non-threaded section 1822, and the end of the second non-threaded section 1822 near the mounting plate 17 is provided with a second cover plate 147.
  • the outer diameter is greater than the inner diameter of the seventh through hole, one end of the second non-threaded section 1822 extends through the seventh through hole to the outside of the inner threaded section 1821, and the second cover plate at the other end 147 is accommodated in the internally threaded section 1821 and abuts the first cover plate 146.
  • an end surface of the ferrule 182 near the second sheath 15 is provided with a third cover plate 183 that seals the ferrule 182, and the third cover plate 183 is provided with the sixth cover plate 183.
  • the third cover plate 183 serves to protect the first non-threaded section 1812 of the support member 181 and prevent the first non-threaded section 1812 and the second guard plate 143 from functioning.
  • the third cover 183 may directly contact the second shield 143, or may indirectly contact the second shield 143 through the aforementioned gasket 144.
  • a sealing ring 19 is provided between the third cover plate 183 and the end surface of the first non-threaded section 1812.
  • the sealing ring 19 may be an O-shaped sealing ring, which is made of an elastic material.
  • the sampling head probe 12 includes a boss 122, a body 123 and a tapered head 124, and the hollow pipe 121 penetrates the boss 122 and the body 123 and the tapered head 124, the outer diameter of the boss 122 is smaller than the outer diameter of the body 123, the boss 122 is provided at the proximal end of the sampling head probe 12 near the sampling tube 13, The cone-shaped head 124 is disposed at the distal end of the sampling head probe 12.
  • the tapered head 124 facilitates the cooperation of the sampling head probe 12 and the second sheath 15. In the embodiment shown in FIG.
  • the body 123 and the boss 122 of the sampling head probe 12 extend into the externally threaded section 1811 to cooperate with it, then the sixth through hole of the support 181 is a variable cross section in the externally threaded section 1811
  • the hole (the cross section changes along the axis direction) to be suitable for matching with the body 123 and the boss 122 of the sampling head probe 12.
  • a trigger portion 20 is provided on the handle as a sampling switch. By replacing the sampling switch on the traditional host or the sampling button on the software interface with the trigger part 20, it is more convenient for the operator to use.
  • the sampling head probe of the electronic nose sampler communicates with the sampling tube, and when the luggage is inspected, the sampling head probe is passed through the luggage compartment gap (such as a zipper joint ) Reaching into the luggage case, without opening the case, can reduce the probability of collecting air mixed with the air outside the luggage case, so that the luggage case can be quickly and efficiently and more accurate inspection.
  • the luggage compartment gap such as a zipper joint

Abstract

一种电子鼻采样器，包括：手柄(11)和采样头探针(12)，采样头探针(12)延伸自手柄(11)，具有细长的结构且具有中空管道(121)；其中，手柄(11)内设有采样管(13)，采样头探针(12)的近端与采样管(13)连通，远端远离手柄(11)；将电子鼻采样器的采样头探针(12)与采样管(13)连通，在对行李箱进行查验时，通过将采样头探针(12)伸入到行李箱内，可以降低采集到气体中混有行李箱外的空气的几率，从而可以实现对行李箱进行快速高效并且较为准确的查验。

Description

一种电子鼻采样器 技术领域
本公开涉及一种电子鼻采样器。
背景技术
在海关进行检验检疫查验时，可以采用电子鼻系统对进出境旅客携带的行李箱进行查验，以判断行李箱内是否含有违禁品。如果想在不打开行李箱的情况下，准确判断行李箱内是否存在关注物品，则需要尽可能多的采集箱内的气体。
在现有技术中，电子鼻系统通常直接采用具有敞口式进气口的电子鼻采样器进行采样。而由于进出境旅客的行李箱通常都是密封的，如果采用常规的具有敞口式进气口的电子鼻采样器进行采样，即使将进气口尽可能地贴近行李箱的缝隙，采样的气体也绝大多数都是箱外空气，查验错误率很大。
发明内容
本公开的目的旨在解决现有技术中存在的上述问题和缺陷的至少一个方面。
本公开提供一种电子鼻采样器，该电子鼻采样器可以在不开箱情况下，利用采样头探针查验行李箱内是否有嫌疑违禁品，达到提高查验速度、效率和准确率的效果。
根据本公开的一个方面，提供一种电子鼻采样器，包括：手柄；和采样头探针，所述采样头探针延伸自所述手柄，具有细长的结构且具有中空管道；其中，所述手柄内设有采样管，所述采样头探针的近端与所述采样管连通，远端远离所述手柄。
根据本公开的一个实施例，电子鼻采样器还包括：套设在所述采样头探针上的第一护套和第二护套，所述第一护套和所述第二护套均与所述采样头探针共轴线，所述第一护套的内径大于所述第二护套的内径，所述第一护套与所述手柄连接。
根据本公开的另一个实施例，所述手柄具有壁，所述壁上设有第一通孔，所述第一护套连接至所述壁，使得所述采样头探针的近端与所述采样管通过所述第一通孔连通。
根据本公开的另一个实施例，所述手柄的壁限定腔，所述电子鼻采样器还包括设于所述腔内的安装板，所述安装板上设有第二通孔，所述采样管插接在所述第二通孔内，所述第一护套的近端穿过所述第一通孔连接至所述安装板使得所述采样头探针的中空管道与所述采样管连通。
根据本公开的另一个实施例，所述电子鼻采样器还包括设于所述手柄的壁外部的安装板，所述安装板上设有第二通孔，所述采样管通过所述第一通孔穿过所述壁与所述第二通孔插接，所述第一护套连接至所述安装板使得所述采样头探针的中空管道与所述采样管连通。
根据本公开的另一个实施例，所述第一护套包括顺次连接的第一护板、保护柱和第二护板，所述第一护板上设有第三通孔，所述第二护板上设有第四通孔，所述保护柱内形成容置空间，所述第一护板与所述安装板连接，所述第二护板与所述第二护套连接，所述第四通孔连通所述保护柱与所述第二护套。
根据本公开的另一个实施例，所述第二护套具有锥状外壁面和圆柱状内壁面，所述第二护套的横截面的直径从靠近所述第一护套至远离所述第一护套逐渐变小。
根据本公开的另一个方面，所述电子鼻采样器还包括定位组件，所述定位组件套设在所述采样头探针的近端，所述定位组件容置于所述第一护套内使得所述定位组件一端与所述安装板抵接，另一端与所述第二护板抵接。
根据本公开的一个实施例，所述保护柱的端部与所述第二护板围成的空间内设有衬垫，所述衬垫上设有与所述第四通孔连通的第五通孔，所述采样头探针通过所述第五通孔穿过所述衬垫，所述衬垫靠近所述安装板的端面设有与所述定位组件的端部相适配的凹槽，所述定位组件的端部容置在所述凹槽内。
根据本公开的另一个方面，所述保护柱与所述第二护板之间设有锥状的过渡部，所述过渡部的直径由所述保护柱至所述第二护板逐渐变小，所 述衬垫呈锥状且所述衬垫高度与所述过渡部的高度相等。
根据本公开的另一个实施例，所述定位组件包括沿轴向设于所述安装板和第二护板之间的支撑件，所述支撑件内设有适于所述采样头探针容置的第六通孔，所述第六通孔与所述第二通孔和所述第四通孔连通，所述采样头探针穿过所述第四通孔延伸至所述第六通孔中。
根据本公开的另一个实施例，所述定位组件还包括套设在所述支撑件外侧的卡套，所述支撑件包括外螺纹段和第一非螺纹段，所述卡套包括内螺纹段和第二非螺纹段，所述第一非螺纹段与所述第二非螺纹段配合且所述第一非螺纹段一端与所述第二护板抵接，另一端伸至所述内螺纹段内，所述外螺纹段与所述内螺纹段螺纹配合且所述外螺纹段一端与伸至所述内螺纹段内的所述第一非螺纹段的端面抵接，另一端伸出所述内螺纹段与所述安装板抵接。
根据本公开的另一个实施例，所述内螺纹段与所述第二非螺纹段可拆卸连接，所述内螺纹段靠近所述第二护套的端部设有封闭所述内螺纹段的第一盖板，所述第一盖板上开设有第七通孔，所述第七通孔的内径不小于所述第二非螺纹段的外径，所述第二非螺纹段靠近所述安装板的端部设有第二盖板，所述第二盖板的外径大于所述第七通孔的内径，所述第二非螺纹段一端穿过所述第七通孔伸出至所述内螺纹段的外侧，另一端的所述第二盖板容置在所述内螺纹段中且与所述第一盖板抵接。
根据本公开的另一个实施例，所述卡套靠近所述第二护套的端面设有密封所述卡套的第三盖板，所述第三盖板上开设有与所述第六通孔共轴线的第八通孔，所述采样头探针通过所述第八通孔穿过所述第三盖板，所述第三盖板一端与所述第二护板抵接，另一端与所述第一非螺纹段抵接。
根据本公开的另一个实施例，所述第三盖板与所述第一非螺纹段的端面之间设有密封圈。
根据本公开的另一个实施例，所述采样头探针包括凸台、本体和锥状头，所述中空管道贯穿所述凸台、所述本体和所述锥状头，所述凸台的外径小于所述本体的外径，所述凸台设于所述采样头探针靠近所述采样管的近端，所述锥状头设于所述采样头探针的远端。
根据本公开的另一个实施例，所述采样头探针的长度范围为 30mm～60mm。
根据本公开的又一个实施例，所述采样头探针的内径范围为1mm～3mm，外径范围为5mm～8mm。
根据本公开的另一个实施例，所述采样头探针的内径为2mm，外径为6mm，长度为40mm。
根据本公开的又一个实施例，所述采样头探针由不锈钢制成，所述采样头探针的外壁面上设有聚四氟乙烯。
根据本公开的又一个实施例，所述手柄上设有扳机部。
在根据本公开的前述各个实例性的实施例中，电子鼻采样器的采样头探针与采样管连通，在对行李箱进行查验时，通过将采样头探针经行李箱缝隙处(如拉链接头)伸入到行李箱内，在不开箱的情况下，可以降低采集到气体中混有行李箱外的空气的几率，从而可以实现对行李箱进行快速高效并且较为准确的查验。
通过下文中参照附图对本公开所作的描述，本公开的其它目的和优点将显而易见，并可帮助对本公开有全面的理解。
附图说明
图1显示根据本公开的一个实施例的电子鼻采样器的结构示意图；
图2显示图1所示的电子鼻采样器的局部剖视放大图。
附图标记：
11-手柄，111-壁，
12-采样头探针，121-中空管道，122-凸台，123-本体，124-锥状头，
13-采样管，
14-第一护套，141-第一护板，142-保护柱，143-第二护板，144-衬垫，1441-凹槽，145-过渡部，146-第一盖板，147-第二盖板，
15-第二护套，
16-腔，
17-安装板，
18-定位组件，181-支撑件，1811-外螺纹段，1812-第一非螺纹段，182-卡套，1821-内螺纹段，1822-第二非螺纹段，183-第三盖板，
19-密封圈，
20-扳机部。
具体实施方式
下面通过实施例，并结合附图，对本公开的技术方案作进一步具体的说明。在说明书中，相同或相似的附图标号指示相同或相似的部件。下述参照附图对本公开实施方式的说明旨在对本公开的总体公开构思进行解释，而不应当理解为对本公开的一种限制。
另外，在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本披露实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其他情况下，公知的结构和装置以图示的方式体现以简化附图。
根据本公开的总体技术构思，一种电子鼻采样器，包括：手柄；采样头探针，所述采样头探针延伸自所述手柄，具有细长的结构且具有中空管道；其中，所述手柄内设有采样管，所述采样头探针的近端与所述采样管连通，远端远离所述手柄。
图1显示根据本公开的一个实施例的电子鼻采样器的结构示意图；图2显示图1所示的电子鼻采样器的局部剖视放大图。
如图1和图2所示，在一个实施例中，提供一种电子鼻采样器，包括：手柄11；采样头探针12，所述采样头探针12延伸自所述手柄11，具有细长的结构且具有中空管道121；其中，所述手柄11内设有采样管13，所述采样头探针12的近端与所述采样管13连通，远端远离所述手柄11。
在本公开的一个实施例中，所述采样头探针12的内径范围为1mm～3mm，外径范围为5mm～8mm，长度范围为30mm～60mm。在一个实施例中，所述采样头探针12的内径为2mm，外径为6mm，长度为40mm。此外，为了保证采样头探针12具有足够的结构强度以便于插入行李箱中，同时采样头探针12的自身材料不会产生影响电子鼻采样器气味分析的挥发性物质，所述采样头探针12的材料由例如不锈钢等的纯净材料制成，所述采样头探针12的外壁面上设有聚四氟乙烯，以起到隔热的作用。
请参见图1，在图示的实施例中，电子鼻采样器还包括：套设在所述采样头探针12上的第一护套14和第二护套15，所述第一护套14和所述第二 护套15均与所述采样头探针12共轴线，所述第一护套14的内径大于所述第二护套15的内径，所述第一护套14与所述手柄11连接。第一护套14和第二护套15为一体成型结构。由于采样头探针12较为纤细，第一护套14和第二护套15均起到保护采样头探针12的作用。
如图1所示，在一个实施例中，所述手柄11具有壁111，所述壁111上设有第一通孔，所述第一护套14连接至所述壁111，使得所述采样头探针12的近端与所述采样管13在所述第一通孔内连通。在一个实施例中，采样头探针12的近端与所述采样管13直接接触抵接，在另一个实施例中，采样头探针12的近端通过过滤棉或其他过滤器件与采样管13抵接。
在一个实施例中，在上述结构的基础上，如图1和图2所示，所述手柄11的壁111限定腔16，所述电子鼻采样器还包括设于所述腔16内的安装板17，所述安装板17上设有第二通孔，所述采样管13插接在所述第二通孔内，所述第一护套14的近端穿过所述第一通孔连接至所述安装板17使得所述采样头探针12的中空管道121与所述采样管13连通。安装板17设于手柄11的腔16内且使第一护套14的近端伸至手柄11的腔16内以连通所述中空管道121和所述采样管13，可以更充分地利用手柄11内的空间，使电子鼻采样器的结构更为紧凑。
在一个实施例中，安装板17也可以设于手柄11外侧，具体结构为：所述电子鼻采样器还包括设于所述手柄11的壁111外部的安装板17，所述安装板17上设有第二通孔，所述采样管13通过所述第一通孔穿过所述壁111与所述第二通孔插接，所述第一护套14连接至所述安装板17使得所述采样头探针12的中空管道121与所述采样管13连通。将安装板17设于手柄11的壁111外部且将采样管13引出壁111外部以与所述采样头探针12的中空管道121连通，该结构不需要在手柄11内部进行采样头探针12的组装，能够降低电子鼻采样器的装配难度。
更为具体地，如图1和图2所示，在另一个实施例中，所述第一护套14包括顺次连接的第一护板141、保护柱142和第二护板143，所述第一护板141上设有第三通孔，所述第二护板143上设有第四通孔，所述保护柱142内形成容置空间，所述第一护板141与所述安装板17连接，所述第二护板143与所述第二护套15连接，所述第四通孔连通所述保护柱142与所 述第二护套15。第一护板141和第二护板143为相互平行且均与保护柱142的中心线垂直。在图示的实施例中，第一护板141与述安装板17贴合连接。
在一个实施例中，如图1和图2所示，所述第二护套15具有锥状外壁面和圆柱状内壁面，所述第二护套15的横截面的直径从靠近所述第一护套14至远离所述第一护套14逐渐变小。该结构的第二护套15的锥状外壁面可以使采样头探针12较为容易地插入到行李箱内进行查验。
在一个实施例中，所述电子鼻采样器还包括定位组件18，所述定位组件18套设在所述采样头探针12的近端，所述定位组件18容置于所述第一护套14内使得所述定位组件18一端与所述安装板17抵接，另一端与所述第二护板143抵接，从而可以提高采样头探针12的定位精度，防止采样头探针12在使用过程中发生偏移。
参见图1和图2，所述保护柱142的端部与所述第二护板143围成的空间内设有衬垫144，所述衬垫144上设有与所述第四通孔连通的所述第五通孔所述采样头探针12通过所述第五通孔穿过所述衬垫144，所述衬垫144靠近所述安装板17的端面设有与所述定位组件18的端部相适配的凹槽1441，所述定位组件18的端部容置在所述凹槽1441内。所述衬垫144采用弹性材料制成。弹性材料制成的衬垫144可以起到缓冲和吸收振动的作用。通过设置衬垫144，还可以起到调节定位组件18的长度的作用。
在一个实施例中，所述保护柱142与所述第二护板143之间可以设有锥状的过渡部145，所述过渡部145的直径由所述保护柱142至所述第二护板143逐渐变小，所述衬垫144呈锥状且所述衬垫144高度与所述过渡部145的高度相等。衬垫144填充在过渡部145中，可以保证衬垫144的定位可靠性，进而保证采样头探针12周向定位精度。
如图1和图2所示，所述定位组件18包括沿轴向设于所述安装板17和第二护板143之间的支撑件181，所述支撑件181内设有适于所述采样头探针12容置的第六通孔，所述第六通孔与所述第二通孔和所述第四通孔连通，所述采样头探针12穿过所述第四通孔延伸至所述第六通孔中。支撑件181与采样头探针12固定连接。本实施例可以增大采样头探针12与所述安装板17和第二护板143的接触面积以及自身的稳固程度。
在一个实施例中，所述定位组件18还包括套设在所述支撑件181外侧 的卡套182，所述支撑件181包括外螺纹段1811和第一非螺纹段1812，所述卡套182包括内螺纹段1821和第二非螺纹段1822，所述第一非螺纹段1812与所述第二非螺纹段1822配合且所述第一非螺纹段1812一端与所述第二护板143抵接，另一端伸至所述内螺纹段1821内，所述外螺纹段1811与所述内螺纹段1821螺纹配合且所述外螺纹段1811一端与伸至所述内螺纹段1821内的所述第一非螺纹段1812的端面抵接，另一端伸出所述内螺纹段1821与所述安装板17抵接。卡套182在此起到保护支撑件181的作用。
为了降低卡套182的加工难度和加工成本，便于批量生产，如图2所示，在一个实施例中，所述内螺纹段1821与所述第二非螺纹段1822可拆卸连接，所述内螺纹段1821靠近所述第二护套15的端部设有封闭所述内螺纹段1821的第一盖板146，所述第一盖板146上开设有第七通孔，所述第七通孔的内径不小于所述第二非螺纹段1822的外径，所述第二非螺纹段1822靠近所述安装板17的端部设有第二盖板147，所述第二盖板147的外径大于所述第七通孔的内径，所述第二非螺纹段1822一端穿过所述第七通孔伸出至所述内螺纹段1821的外侧，另一端的所述第二盖板147容置在所述内螺纹段1821中且与所述第一盖板146抵接。
更为具体地，所述卡套182靠近所述第二护套15的端面设有密封所述卡套182的第三盖板183，所述第三盖板183上开设有与所述第六通孔共轴线的第八通孔，所述采样头探针12通过所述第八通孔穿过所述第三盖板183，所述第三盖板183一端与所述第二护板143抵接，另一端与所述第一非螺纹段1812抵接。第三盖板183起到保护支撑件181的第一非螺纹段1812，防止第一非螺纹段1812与所述第二护板143作用。第三盖板183可以与第二护板143直接抵接，也可以通过前述的衬垫144与第二护板143进行间接抵接。
此外，在本公开的一个实施例中，所述第三盖板183与所述第一非螺纹段1812的端面之间设有密封圈19。密封圈19可以为O形密封圈，采用弹性材料制成。通过设置密封圈19，可以增强采样头探针12与第二非螺纹段1822的密封效果。
在一个实施例中，如图1和图2所示，所述采样头探针12包括凸台122、 本体123和锥状头124，所述中空管道121贯穿所述凸台122、所述本体123和所述锥状头124，所述凸台122的外径小于所述本体123的外径，所述凸台122设于所述采样头探针12靠近所述采样管13的近端，所述锥状头124设于所述采样头探针12的远端。所述锥状头124便于采样头探针12与第二护套15配合。在图2所示的实施例中，采样头探针12的本体123和凸台122伸至外螺纹段1811中与其配合，则支撑件181的第六通孔在外螺纹段1811内为变截面通孔(截面沿着轴线方向变化)，以适于与采样头探针12的本体123和凸台122进行匹配。
在一个实施例中，所述手柄上设有扳机部20作为采样开关。通过扳机部20代替传统的主机上的采样开关或软件界面上的采样按钮，可以更加方便操作人员使用。
在根据本公开的前述各个实例性的实施例中，电子鼻采样器的采样头探针与采样管连通，在对行李箱进行查验时，将采样头探针经行李箱缝隙处(如拉链接头)伸入到行李箱内，在不开箱的情况下，可以降低采集到气体中混有行李箱外的空气的几率，从而可以实现对行李箱进行快速高效并且较为准确的查验。
本领域的技术人员可以理解，上面所描述的实施例都是示例性的，并且本领域的技术人员可以对其进行改进，各种实施例中所描述的结构在不发生结构或者原理方面的冲突的情况下可以进行自由组合。
在详细说明本公开的较佳实施例之后，熟悉本领域的技术人员可清楚的了解，在不脱离随附权利要求的保护范围与精神下可进行各种变化与改变，且本公开亦不受限于说明书中所举示例性实施例的实施方式。
虽然结合附图对本公开进行了说明，但是附图中公开的实施例旨在对本公开优选实施方式进行示例性说明，而不能理解为对本公开的一种限制。
虽然本公开总体构思的一些实施例已被显示和说明，本领域普通技术人员将理解，在不背离本公开总体构思的原则和精神的情况下，可对这些实施例做出改变，本公开的范围以权利要求和它们的等同物限定。
应注意，措词“包括”不排除其它元件或步骤，措词“一”或“一个”不排除多个。另外，权利要求的任何元件标号不应理解为限制本公开的范围。

Claims (21)

  1. 一种电子鼻采样器，其特征在于，包括：
    手柄(11)；和
    采样头探针(12)，所述采样头探针(12)延伸自所述手柄(11)，具有细长的结构且具有中空管道(121)；
    其中，所述手柄(11)内设有采样管(13)，所述采样头探针(12)的近端与所述采样管(13)连通，远端远离所述手柄(11)。
  2. 根据权利要求1所述的电子鼻采样器，其特征在于，还包括：套设在所述采样头探针(12)上的第一护套(14)和第二护套(15)，所述第一护套(14)和所述第二护套(15)均与所述采样头探针(12)共轴线，所述第一护套(14)的内径大于所述第二护套(15)的内径，所述第一护套(14)与所述手柄(11)连接。
  3. 根据权利要求2所述的电子鼻采样器，其特征在于，所述手柄(11)具有壁(111)，所述壁(111)上设有第一通孔，所述第一护套(14)连接至所述壁(111)，使得所述采样头探针(12)的近端与所述采样管(13)通过所述第一通孔连通。
  4. 根据权利要求3所述的电子鼻采样器，其特征在于，所述手柄(11)的壁(111)限定腔(16)，所述电子鼻采样器还包括设于所述腔(16)内的安装板(17)，所述安装板(17)上设有第二通孔，所述采样管(13)插接在所述第二通孔内，所述第一护套(14)的近端穿过所述第一通孔连接至所述安装板(17)使得所述采样头探针(12)的中空管道(121)与所述采样管(13)连通。
  5. 根据权利要求3所述的电子鼻采样器，其特征在于，所述电子鼻采样器还包括设于所述手柄(11)的壁(111)外部的安装板(17)，所述安装板(17)上设有第二通孔，所述采样管(13)通过所述第一通孔穿过所述壁(111)与所述第二通孔插接，所述第一护套(14)连接至所述安装板 (17)使得所述采样头探针(12)的中空管道(121)与所述采样管(13)连通。
  6. 根据权利要求4或5所述的电子鼻采样器，其特征在于，所述第一护套(14)包括顺次连接的第一护板(141)、保护柱(142)和第二护板(143)，所述第一护板(141)上设有第三通孔，所述第二护板(143)上设有第四通孔，所述保护柱(142)内形成容置空间，所述第一护板(141)与所述安装板(17)连接，所述第二护板(143)与所述第二护套(15)连接，所述第四通孔连通所述保护柱(142)与所述第二护套(15)。
  7. 根据权利要求2所述的电子鼻采样器，其特征在于，所述第二护套(15)具有锥状外壁面和圆柱状内壁面，所述第二护套(15)的横截面的直径从靠近所述第一护套(14)至远离所述第一护套(14)逐渐变小。
  8. 根据权利要求6所述的电子鼻采样器，其特征在于，所述电子鼻采样器还包括定位组件(18)，所述定位组件(18)套设在所述采样头探针(12)的近端，所述定位组件(18)容置于所述第一护套(14)内使得所述定位组件(18)一端与所述安装板(17)抵接，另一端与所述第二护板(143)抵接。
  9. 根据权利要求8所述的电子鼻采样器，其特征在于，所述保护柱(142)的端部与所述第二护板(143)围成的空间内设有衬垫(144)，所述衬垫(144)上设有与所述第四通孔连通的第五通孔，所述采样头探针(12)通过所述第五通孔穿过所述衬垫(144)，所述衬垫(144)靠近所述安装板(17)的端面设有与所述定位组件(18)的端部相适配的凹槽(1441)，所述定位组件(18)的端部容置在所述凹槽(1441)内。
  10. 根据权利要求9所述的电子鼻采样器，其特征在于，所述保护柱(142)与所述第二护板(143)之间设有锥状的过渡部(145)，所述过渡部(145)的直径由所述保护柱(142)至所述第二护板(143)逐渐变小， 所述衬垫(144)呈锥状且所述衬垫(144)高度与所述过渡部(145)的高度相等。
  11. 根据权利要求8所述的电子鼻采样器，其特征在于，所述定位组件(18)包括沿轴向设于所述安装板(17)和第二护板(143)之间的支撑件(181)，所述支撑件(181)内设有适于所述采样头探针(12)容置的第六通孔，所述第六通孔与所述第二通孔和所述第四通孔连通，所述采样头探针(12)穿过所述第四通孔延伸至所述第六通孔中。
  12. 根据权利要求11所述的电子鼻采样器，其特征在于，所述定位组件(18)还包括套设在所述支撑件(181)外侧的卡套(182)，所述支撑件(181)包括外螺纹段(1811)和第一非螺纹段(1812)，所述卡套(182)包括内螺纹段(1821)和第二非螺纹段(1822)，所述第一非螺纹段(1812)与所述第二非螺纹段(1822)配合且所述第一非螺纹段(1812)一端与所述第二护板(143)抵接，另一端伸至所述内螺纹段(1821)内，所述外螺纹段(1811)与所述内螺纹段(1821)螺纹配合且所述外螺纹段(1811)一端与伸至所述内螺纹段(1821)内的所述第一非螺纹段(1812)的端面抵接，另一端伸出所述内螺纹段(1821)与所述安装板(17)抵接。
  13. 根据权利要求12所述的电子鼻采样器，其特征在于，所述内螺纹段(1821)与所述第二非螺纹段(1822)可拆卸连接，所述内螺纹段(1821)靠近所述第二护套(15)的端部设有封闭所述内螺纹段(1821)的第一盖板(146)，所述第一盖板(146)上开设有第七通孔，所述第七通孔的内径不小于所述第二非螺纹段(1822)的外径，所述第二非螺纹段(1822)靠近所述安装板(17)的端部设有第二盖板(147)，所述第二盖板(147)的外径大于所述第七通孔的内径，所述第二非螺纹段(1822)一端穿过所述第七通孔伸出至所述内螺纹段(1821)的外侧，另一端的所述第二盖板(147)容置在所述内螺纹段(1821)中且与所述第一盖板(146)抵接。
  14. 根据权利要求13所述的电子鼻采样器，其特征在于，所述卡套(182) 靠近所述第二护套(15)的端面设有密封所述卡套(182)的第三盖板(183)，所述第三盖板(183)上开设有与所述第六通孔共轴线的第八通孔，所述采样头探针(12)通过所述第八通孔穿过所述第三盖板(183)，所述第三盖板(183)一端与所述第二护板(143)抵接，另一端与所述第一非螺纹段(1812)抵接。
  15. 根据权利要求14所述的电子鼻采样器，其特征在于，所述第三盖板(183)与所述第一非螺纹段(1812)的端面之间设有密封圈(19)。
  16. 根据权利要求1-15中的任一项所述的电子鼻采样器，其特征在于，所述采样头探针(12)包括凸台(122)、本体(123)和锥状头(124)，所述中空管道(121)贯穿所述凸台(122)、所述本体(123)和所述锥状头(124)，所述凸台(122)的外径小于所述本体(123)的外径，所述凸台(122)设于所述采样头探针(12)靠近所述采样管(13)的近端，所述锥状头(124)设于所述采样头探针(12)的远端。
  17. 根据权利要求1所述的电子鼻采样器，其特征在于，所述采样头探针(12)的长度范围为30mm～60mm。
  18. 根据权利要求17所述的电子鼻采样器，其特征在于，所述采样头探针(12)的内径范围为1mm～3mm，外径范围为5mm～8mm。
  19. 根据权利要求17或18所述的电子鼻采样器，其特征在于，所述采样头探针(12)的内径为2mm，外径为6mm，长度为40mm。
  20. 根据权利要求1-15中的任一项所述的电子鼻采样器，其特征在于，所述采样头探针(12)由不锈钢制成，所述采样头探针(12)的外壁面上设有聚四氟乙烯。
  21. 根据权利要求1-15中的任一项所述的电子鼻采样器，其特征在于， 所述手柄上设有扳机部(20)。
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