CN214621919U - Portable headspace sampling device, system and equipment - Google Patents
Portable headspace sampling device, system and equipment Download PDFInfo
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- CN214621919U CN214621919U CN202023342730.XU CN202023342730U CN214621919U CN 214621919 U CN214621919 U CN 214621919U CN 202023342730 U CN202023342730 U CN 202023342730U CN 214621919 U CN214621919 U CN 214621919U
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Abstract
The utility model provides a portable headspace sampling device, system and equipment, sampling device includes: the device comprises an air inlet joint, a filter, a sampling needle and a protective sleeve; the first port of the air inlet joint is communicated with the first port of the filter in a sealing way, the second port of the filter is communicated with the first port of the sampling needle in a sealing way, the protecting sleeve is provided with a first through hole for the sampling needle to pass through, and the protecting sleeve is in threaded connection with the air inlet joint; the sampling device of the utility model is provided with a thread protecting sleeve which can move along the thread in a telescopic way, and when the sampling device works, the protecting sleeve retracts to expose a sampling needle for sampling; during non-working time, the protective sleeve extends out to be sleeved with the sampling needle, so that the sampling needle is prevented from pricking contact personnel, meanwhile, due to the design of the thread structure, the protective sleeve can be prevented from being pushed by mistake, and the sampling needle is prevented from being exposed and pricked.
Description
Technical Field
The utility model relates to a headspace test technical field, in particular to portable headspace sampling device, system and equipment.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Analysis of headspace gas composition in food packaging is an important means for verifying the quality of packaging designs and is also one of the important methods for verifying the shelf life of products. At present, most of headspace analyzers in the market are desktop devices with large volumes, and portable headspace testers begin to come out in the market in order to meet the requirements of portable application analysis.
However, the inventors have found that during use, the following problems often occur: (1) the air suction pipeline sucks packing materials to cause pipeline blockage or sensing damage; (2) the sampling needle is exposed and easily stabs operators; (3) the test data was not stable.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a portable headspace sampling device, a system and a device, wherein the sampling device is provided with a thread protecting sleeve, the protecting sleeve can move along the thread in a telescopic way, and when the portable headspace sampling device works, the protecting sleeve retracts to expose a sampling needle for sampling; during non-working time, the protective sleeve extends out to be sleeved with the sampling needle, so that the sampling needle is prevented from pricking contact personnel, meanwhile, due to the design of the thread structure, the protective sleeve can be prevented from being pushed by mistake, and the sampling needle is prevented from being exposed and pricked.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses the first aspect provides a portable headspace sampling device.
A portable headspace sampling device, comprising: the device comprises an air inlet joint, a filter, a sampling needle and a protective sleeve;
the first port of air inlet joint and the first port of filter are sealed and communicated, the second port of filter and the first port of sampling needle are sealed and communicated, the protective sleeve is provided with a first through hole for the sampling needle to pass through, and the protective sleeve is in threaded connection with the air inlet joint.
As some possible implementations, the filter is located in the hollow space of the protective sleeve.
As some possible implementations, the first port of the sampling needle is sleeved over the second port of the filter.
As some possible implementations, the second port of the filter is sleeved over the first port of the sampling needle.
As a further limitation, a first seal is disposed between the first port of the sampling needle and the second port of the filter.
As a further limitation, the first port of the sampling needle is sealed from the second port of the filter by contact.
As some possible implementations, the first port of the filter is sleeved over the first port of the intake adapter.
As some possible implementations, the first port of the air inlet fitting is sleeved over the first port of the filter.
By way of further limitation, a second seal is disposed between the first port of the filter and the first port of the intake adapter.
As a further limitation, the first port of the filter is sealed from the first port of the inlet fitting by contact.
As some possible realization modes, the air inlet joint further comprises a plate, and the air inlet joint is fixed on the plate.
As some possible implementations, the sampling needle passes through the first through-hole when the protective sheath is retracted a predetermined amount along the thread, and the sampling needle is located within the protective sheath when the protective sheath is extended a predetermined amount along the thread.
The utility model discloses the second aspect provides a portable headspace test system.
A portable headspace testing system comprises a switching valve, a pressure detection element, an oxygen detection element, a carbon dioxide detection element, a vacuum pump, a controller and the portable headspace sampling device of the first aspect of the invention;
the second port of the air inlet joint, the carbon dioxide detection element and the oxygen detection element are sequentially communicated, the air outlet port of the oxygen detection element is communicated with the first port of the switching valve, the second port of the switching valve is communicated with the vacuum pump, the third port of the switching valve is communicated with the pressure detection element, and the pressure detection element, the oxygen detection element, the carbon dioxide detection element and the vacuum pump are respectively connected with the controller.
As some possible realization modes, a first air resistance is arranged on a pipeline between the second port of the air inlet joint and the air inlet port of the carbon dioxide detection element.
As possible realization modes, the air inlet connector is fixed on the plate, the plate is fixed in the shell, a second through hole is formed in the bottom of the shell, and a second air resistor is arranged in the second through hole.
As some possible realization modes, the air inlet joint further comprises a shell, the air inlet joint is fixed on the plate, the plate is fixed in the shell, and the shell is provided with a display screen which is in communication connection with the controller.
As some possible realization modes, a third air resistance is arranged on an air outlet pipeline of the vacuum pump.
The utility model discloses the third aspect provides a portable headspace test equipment, include the utility model discloses the first aspect portable headspace sampling device.
The utility model discloses the fourth aspect provides a portable headspace test equipment, include the utility model discloses the second aspect portable headspace test system.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the portable headspace sampling device, system and equipment of the utility model have the advantages that the sampling device is provided with a thread protecting sleeve, the thread is rotated, the protecting sleeve stretches and retracts, and the sampling needle is exposed for sampling when the portable headspace sampling device, system and equipment work; and in non-working time, the protective sleeve extends out and is sleeved with the sampling needle, so that the sampling needle is prevented from pricking contact personnel. Due to the design of the thread structure, the sampling needle can be prevented from being exposed and punctured due to the fact that the protective sleeve is pushed by mistake.
2. Portable headspace sampling device, system and equipment, sampling device is equipped with the filter, can filter a small amount of air intake impurity, guarantees the stability and the accuracy that detect, it is more when air intake impurity, will directly form the jam, prevent that debris from getting into the sensor, cause the sensor to damage.
3. Portable headspace sampling device, system and equipment, be equipped with a plurality of air-resistor, can guarantee that sampling speed is stable, test data is stable and accurate.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural diagram of a portable headspace sampling device provided in embodiment 1 of the present invention.
Fig. 2 is a schematic view of a pipeline connection of the portable headspace testing system provided in embodiment 2 of the present invention.
Fig. 3 is a schematic view of a pipeline connection of the portable headspace testing system provided in embodiment 3 of the present invention.
101. A sampling device; 102. a carbon dioxide infrared sensor; 103. an oxygen sensor; 104. a pressure sensor; 105. a vacuum pump; 106. a first air lock; 107. a controller; 108. a touch display screen; 109. a battery; 110. a third air resistance;
201. a fixing plate; 202. an air inlet joint; 203. a filter; 204. a sampling needle; 205. a protective sleeve; 206. a second air resistance;
301. a housing; 302. and (5) protecting the film.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and may be fixedly connected, or may be integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.
Example 1:
as shown in fig. 1, embodiment 1 of the present invention provides a portable headspace sampling device, including: an air inlet joint 202, a filter 203, a sampling needle 204 and a protective sleeve 205;
the first port of the air inlet joint 202 is in sealed communication with the first port of the filter 203, the second port of the filter 203 is in sealed communication with the first port of the sampling needle 204, the protective sleeve 205 is provided with a first through hole for the sampling needle to pass through, and the protective sleeve 205 is in threaded connection with the air inlet joint 202, namely, the internal thread of the protective sleeve is in matched connection with the external thread of the air inlet joint.
It can be understood that, in some other embodiments, the external thread of the protective sleeve may be connected with the internal thread of the air inlet joint, as long as the protective sleeve can be screwed in and out along the thread, and those skilled in the art may select the connection according to specific working conditions, and details are not described here.
In this embodiment, the filter is located in the hollow space of the protective sleeve, that is, the protective sleeve has only two openings, one opening is used for the sampling needle to pass through, the other opening is in threaded connection with the air inlet joint, and the filter is arranged in the hollow space between the two openings of the protective sleeve; it can be understood that, in some other embodiments, the protective sleeve may also include not only the two openings, but also be configured to be a hollow structure, and those skilled in the art may select the openings according to specific working conditions, which is not described herein again.
In this embodiment, the first port of the sampling needle is sleeved on the second port of the filter, and it can be understood that in some other embodiments, the second port of the filter may also be sleeved on the first port of the sampling needle;
a first sealing element is arranged between the first port of the sampling needle and the second port of the filter, and the interfaces are sealed through the first sealing element.
It will be appreciated that in other embodiments, the first seal may not be used, and a contact cone seal may be used (since the filter is a non-metallic member and the sampling needle is not limited by material, the seal may be well achieved).
In this embodiment, the first port of the filter is sleeved on the first port of the air inlet joint, and it can be understood that in some other embodiments, the first port of the air inlet joint may also be sleeved on the first port of the filter;
and a second sealing element is arranged between the first port of the filter and the first port of the air inlet joint, and the interfaces are sealed through the second sealing element.
It will be appreciated that the second seal may be omitted and the cone of contact type may be used directly (since the filter is a non-metallic element and the sampling needle is not limited by material, sealing is achieved well)
In this embodiment, a fixing plate 201 (i.e., a plate member) is further included, and the air inlet connector is fixed to the fixing plate 201.
In this embodiment, the lag can rotate relative the interface that admits air, forms the flexible removal of lag, and the lag withdrawal can expose the sampling needle sample, and the lag stretches out, can wrap the sampling needle inside the lag, prevents that the sampling needle from exposing, avoids stabbing contact personnel.
The rigid connection air inlet joint of the fixing plate 201 can be welded, or connected through threads, or riveted, or integrally processed, the preferred welding mode adopted by the embodiment can be selected by a person skilled in the art according to specific working conditions, and the rigid connection air inlet joint is not described herein again.
Example 2:
as shown in fig. 1 and 2, embodiment 2 of the present invention provides a portable headspace testing system, which includes a housing 301, a touch display screen 108 installed on the housing 301, a controller 107, a battery 109, the sampling device 101 described in embodiment 1, a carbon dioxide infrared sensor 102, an oxygen sensor 103, a pressure sensor 104, a vacuum pump 105, and a first air resistance 106.
The second port of the air inlet joint 202, the carbon dioxide infrared sensor 102 and the oxygen sensor 103 are sequentially communicated, the air outlet port of the oxygen sensor 103 is communicated with the first port of the three-way valve, the second port of the three-way valve is communicated with the vacuum pump 105, the third port of the three-way valve is communicated with the pressure sensor 104, the carbon dioxide infrared sensor 102, the oxygen sensor 103, the pressure sensor 104 and the vacuum pump 105 are respectively connected with the controller 107, and gas component analysis is performed according to sensor data and pressure data.
In this embodiment, a first air resistor 106 is disposed on a pipeline between the second port of the air inlet joint and the air inlet port of the carbon dioxide infrared sensor 102.
The air inlet connector is fixed on the fixing plate 201, the fixing plate 201 is fixed in the shell 301, the bottom of the shell 301 is provided with a second through hole, and a second air resistor 206 is arranged in the second through hole.
The touch display screen 108 connected to the controller is disposed outside the housing 301, and may be fixed to the outside of the housing 301 by bonding or embedded into an opening on the outside of the housing 301.
The battery 109 is connected to the controller 107, and the battery is disposed inside the housing 301, and a protective film or an identification film 302 is attached to an outer surface of the housing.
In the embodiment, the air resistor is a screw with an orifice; it is understood that in other embodiments, the air lock may also be a needle valve, or a throttle valve, or a flow regulating valve, or a flow controller, which may be selected by a person skilled in the art according to specific conditions and will not be described herein.
The specific working principle is as follows:
during testing, the protective sleeve 205 is retracted by rotating to expose the sampling needle 204, the sampling needle is operated to pierce into the test gas in the headspace of the sample, a test key of the controller 107 or a test key of the touch display screen 108 is pressed, the vacuum pump 105 works to begin to suck gas, and the test gas in the headspace of the sample enters the three-way valve through the sampling needle 204, the filter 203, the air inlet connector 202, the first air resistor 106, the carbon dioxide infrared sensor 102 and the oxygen sensor 103;
the test gas is respectively connected with the pressure sensor 104 through the tee joint to measure the pressure value, is connected with the vacuum port of the vacuum pump 105, enters the vacuum pump, is exhausted through the exhaust port, and the processor 107 carries out gas component analysis on the sensor data and the pressure data and displays the gas component analysis on the touch display screen 108.
Example 3:
as shown in fig. 1 and fig. 3, embodiment 3 of the present invention provides a portable headspace testing system, which includes a housing 301, a touch display screen 108 installed on the housing 301, a controller 107, a battery 109, the sampling device 101 described in embodiment 1, a carbon dioxide infrared sensor 102, an oxygen sensor 103, a pressure sensor 104, a vacuum pump 105, and a third air resistor 110.
The second port of the air inlet joint 202, the carbon dioxide infrared sensor 102 and the oxygen sensor 103 are sequentially communicated, the air outlet port of the oxygen sensor 103 is communicated with the first port of the three-way valve, the second port of the three-way valve is communicated with the vacuum pump 105, the third port of the three-way valve is communicated with the pressure sensor 104, and the carbon dioxide infrared sensor 102, the oxygen sensor 103, the pressure sensor 104 and the vacuum pump 105 are respectively connected with the controller 107.
In this embodiment, a third air lock 110 is disposed on the air outlet pipeline of the vacuum pump.
The air inlet connector is fixed on the fixing plate 201, the fixing plate 201 is fixed in the shell 301, the bottom of the shell 301 is provided with a second through hole, and a second air resistor 206 is arranged in the second through hole.
The touch display screen 108 connected to the controller is disposed outside the housing 301, and may be fixed to the outside of the housing 301 by bonding or embedded into an opening on the outside of the housing 301.
The battery 109 is connected to the controller 107, and the battery is disposed inside the housing 301, and a protective film or an identification film 302 is attached to an outer surface of the housing.
In the embodiment, the air resistor is a screw with an orifice; it is understood that in other embodiments, the air lock may also be a needle valve, or a throttle valve, or a flow regulating valve, or a flow controller, which may be selected by a person skilled in the art according to specific conditions and will not be described herein.
The specific working principle is as follows:
during testing, the protective sleeve 205 is retracted by rotating to expose the sampling needle 204, the sampling needle is operated to pierce into the test gas in the headspace of the sample, a test key of the controller 107 or a test key of the touch display screen 108 is pressed, the vacuum pump 105 works to begin to suck gas, and the test gas in the headspace of the sample enters the three-way valve through the sampling needle 204, the filter 203, the air inlet connector 202, the carbon dioxide infrared sensor 102 and the oxygen sensor 103;
the test gas is respectively connected with the pressure sensor 104 through the tee joint to measure the pressure value, is connected with the vacuum port of the vacuum pump 105, enters the vacuum pump, is exhausted through the air resistor 110 of the exhaust port, and the processor 107 carries out gas component analysis on the sensor data and the pressure data and displays the data on the touch display screen 108.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A portable headspace sampling device, characterized in that:
the method comprises the following steps: the device comprises an air inlet joint, a filter, a sampling needle and a protective sleeve;
the first port of air inlet joint and the first port of filter are sealed and communicated, the second port of filter and the first port of sampling needle are sealed and communicated, the protective sleeve is provided with a first through hole for the sampling needle to pass through, and the protective sleeve is in threaded connection with the air inlet joint.
2. The portable headspace sampling device of claim 1, wherein:
the filter is located in the hollow space of the protective sleeve.
3. The portable headspace sampling device of claim 1, wherein:
the first port of the sampling needle is sleeved on the second port of the filter;
alternatively, the first and second electrodes may be,
the second port of the filter is sleeved on the first port of the sampling needle.
4. The portable headspace sampling device of claim 3, wherein:
a first sealing element is arranged between the first port of the sampling needle and the second port of the filter;
alternatively, the first and second electrodes may be,
the first port of the sampling needle is sealed from the second port of the filter by contact.
5. The portable headspace sampling device of claim 1, wherein:
the first port of the filter is sleeved on the first port of the air inlet joint;
alternatively, the first and second electrodes may be,
the first port of the air inlet joint is sleeved on the first port of the filter.
6. The portable headspace sampling device of claim 5, wherein:
a second sealing element is arranged between the first port of the filter and the first port of the air inlet joint;
alternatively, the first and second electrodes may be,
the first port of the filter is sealed in direct contact with the first port of the inlet fitting.
7. The portable headspace sampling device of claim 1, wherein:
the air inlet joint is fixed on the plate;
alternatively, the first and second electrodes may be,
when the lag retracts along the screw thread by a preset amount, the sampling needle passes through the first through hole, and when the lag extends out along the screw thread by a preset amount, the sampling needle is positioned in the lag.
8. A portable headspace test system, characterized in that:
comprising a switching valve, a pressure detection element, an oxygen detection element, a carbon dioxide detection element, a vacuum pump, a controller and the portable headspace sampling device of any of claims 1-7;
the second port of the air inlet joint, the carbon dioxide detection element and the oxygen detection element are sequentially communicated, the air outlet port of the oxygen detection element is communicated with the first port of the switching valve, the second port of the switching valve is communicated with the vacuum pump, the third port of the switching valve is communicated with the pressure detection element, and the pressure detection element, the oxygen detection element, the carbon dioxide detection element and the vacuum pump are respectively connected with the controller.
9. The portable headspace testing system of claim 8, wherein:
a first air resistor is arranged on a pipeline between the second port of the air inlet joint and the air inlet port of the carbon dioxide detection element;
alternatively, the first and second electrodes may be,
the air inlet connector is fixed on the plate, the plate is fixed in the shell, a second through hole is formed in the bottom of the shell, and a second air resistor is arranged in the second through hole;
alternatively, the first and second electrodes may be,
the air inlet connector is fixed on the plate, the plate is fixed in the shell, and the shell is provided with a display screen in communication connection with the controller;
alternatively, the first and second electrodes may be,
and a third air resistance is arranged on an air outlet pipeline of the vacuum pump.
10. A portable headspace testing device comprising the portable headspace sampling apparatus of any of claims 1-7;
alternatively, the first and second electrodes may be,
comprising the portable headspace testing system according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023342730.XU CN214621919U (en) | 2020-12-31 | 2020-12-31 | Portable headspace sampling device, system and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023342730.XU CN214621919U (en) | 2020-12-31 | 2020-12-31 | Portable headspace sampling device, system and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN214621919U true CN214621919U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023342730.XU Active CN214621919U (en) | 2020-12-31 | 2020-12-31 | Portable headspace sampling device, system and equipment |
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| Country | Link |
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| CN (1) | CN214621919U (en) |
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- 2020-12-31 CN CN202023342730.XU patent/CN214621919U/en active Active
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