CN218727060U

CN218727060U - Headspace gas analyzer

Info

Publication number: CN218727060U
Application number: CN202222681950.8U
Authority: CN
Inventors: 周学成; 邓跃伟; 管东玲; 刘沛
Original assignee: GBPI PACKAGING TEST INSTRUMENTS CO Ltd
Current assignee: GBPI PACKAGING TEST INSTRUMENTS CO Ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-03-24
Anticipated expiration: 2032-10-12

Abstract

The utility model provides a headspace gas analyzer relates to the gas analysis field. The headspace gas analyzer comprises a main machine shell, a needle tube handle, a gas pipeline, a control circuit board, a micro vacuum pump, a carbon dioxide sensor and an oxygen sensor; one end of the gas pipeline is connected with the needle tube handle, the other end of the gas pipeline is connected with the micro vacuum pump, and the carbon dioxide sensor and the oxygen sensor are connected in series on the gas pipeline; a puncture needle head is arranged on the needle tube handle, a needle tube jack is arranged on the main machine shell, and the needle tube jack is in plug-in fit with the needle tube handle; the main case is also provided with a display screen and a printing assembly, and the carbon dioxide sensor, the oxygen sensor, the display screen and the printing assembly are respectively and electrically connected with the control circuit board; the display screen is used for displaying the content of carbon dioxide and the content of oxygen in the sampled gas, and the printing assembly is used for printing a gas analysis result; the main case is provided with two ventilation windows, the micro vacuum pump is positioned between the two ventilation windows, and a ventilation screen is arranged at the ventilation window.

Description

Headspace gas analyzer

Technical Field

The utility model relates to a gas analysis technical field especially relates to a headspace gas analysis appearance.

Background

At present, the food packaging usually adopts the modified atmosphere preservation technology, namely the proportion of nitrogen, oxygen, carbon dioxide and other components in the gas in the packaging bag is artificially controlled, and the long-acting preservation purpose is achieved by inhibiting the cell respiration.

For example, the Chinese utility model patent with the publication number of CN2622707Y and publication date of 2004 as 6.30 discloses a gas detection device for a controlled atmosphere storage, and specifically discloses that the gas detection device for the controlled atmosphere storage comprises a casing provided with an oxygen and carbon dioxide gas sampling display panel, and a gas sampling display part and an industrial personal computer of the controlled atmosphere storage to be detected, which are connected with the gas sampling display panel, are arranged in the casing; the single chip microcomputer of the gas sampling display part is connected to an industrial personal computer for automatic control through a lead. The gas sampling display part mainly comprises a singlechip, a sampling electromagnetic valve group connected with each controlled atmosphere storage, a carbon dioxide sensor and an oxygen sensor. And a gas production pump and a flow meter are connected in series between the input ends of the carbon dioxide sensor and the oxygen sensor and the sampling electromagnetic valve group connected with each gas-conditioned cold store.

In the prior art, a gas detection device of a gas-conditioned cold store controls an electromagnetic valve to be opened to collect gas samples, the concentration values of the collected gas are displayed through a carbon dioxide display window and an oxygen display window, and the residual gas is discharged from an exhaust port. However, because the air-conditioned packaging product has good sealing performance, once the sealing opening is opened, the gas is easy to diffuse into the surrounding environment, and the difficulty of gas intake collection is high; moreover, ambient air may also be mixed into the sampled gas, thereby affecting the accuracy of the gas analysis results.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a headspace gas analyzer, which solves the problem that once the sealing gas is opened, the gas is easy to diffuse into the surrounding environment, the difficulty of gas collection is high; in addition, the ambient air may be mixed into the sampled gas, which may affect the accuracy of the gas analysis result.

The utility model discloses a headspace gas analyzer's technical scheme does:

the headspace gas analyzer comprises a main case, a needle tube handle, a gas pipeline, a control circuit board, a micro vacuum pump, a carbon dioxide sensor and an oxygen sensor, wherein the control circuit board, the micro vacuum pump, the carbon dioxide sensor and the oxygen sensor are arranged in the main case;

one end of the gas pipeline is connected with the needle tube handle, the other end of the gas pipeline is connected with the micro vacuum pump, and the carbon dioxide sensor and the oxygen sensor are connected in series on the gas pipeline;

the needle tube handle is provided with a puncture needle head, a sieve pore filter is arranged inside the needle tube handle, the main case is provided with a needle tube jack, and the needle tube jack is in plug-in fit with the needle tube handle so that the puncture needle head can be inserted into the main case;

the main case is also provided with a display screen and a printing assembly, and the carbon dioxide sensor, the oxygen sensor, the display screen and the printing assembly are respectively and electrically connected with the control circuit board; the display screen is used for displaying the content of carbon dioxide and the content of oxygen in the sampled gas, and the printing assembly is used for printing the result of gas analysis;

two ventilation windows have been seted up to the mainframe shell, two the ventilation window arrange in on the relative lateral wall of mainframe shell, the micro vacuum pump is located two on the heat dissipation channel between the ventilation window, ventilation screen cloth is installed to ventilation window department.

As a further preferred scheme, the profile shape of the main chassis is wedge-shaped, the main chassis comprises a bottom plate, a back plate, a first side wall, a second side wall and a front panel, the back plate is connected to the rear side edge of the bottom plate, the front panel is obliquely connected between the front edge of the bottom plate and the upper edge of the back plate, the first side wall and the second side wall are fixedly connected to two sides of the bottom plate, and the first side wall and the second side wall are both in right-angled triangle shape.

As a further preferred scheme, the display screen is arranged in the middle of the front panel, the printing assembly is located at the rear of the display screen, and the needle tube jack is arranged at the lower left corner of the front panel.

As a further preferable scheme, the control circuit board is fixedly mounted on the bottom plate of the main chassis, a plate surface of the control circuit board is arranged perpendicular to the bottom plate of the main chassis, and the carbon dioxide sensor and the oxygen sensor are respectively mounted on the control circuit board.

As a further preferable scheme, a through hole is formed in the side wall of the main case, a through joint is installed in the through hole, the gas pipeline comprises an inner pipeline and an outer pipeline, and the outer pipeline is connected between the through joint and the needle tube handle; the internal pipeline is connected between the straight joint and the micro vacuum pump, and the carbon dioxide sensor and the oxygen sensor are located on the internal pipeline.

As a further preferable scheme, a main window is arranged on the main case, and a seam beautifying decoration block is filled between the main window and the display screen.

As a further preferred scheme, the gas pipeline is a teflon capillary.

As a further preferable scheme, the outer part of the ventilation screen is also provided with a flow disturbance baffle.

Has the advantages that: this headspace gas analyzer has adopted host computer shell, needle tubing handle, gas line to and locate the inside control circuit board of host computer shell, micro vacuum pump, carbon dioxide sensor and oxygen sensor's structural style, and gas line connects between needle tubing handle and micro vacuum pump, and carbon dioxide sensor and oxygen sensor concatenate in the gas line, and install the puncture needle on the needle tubing handle.

When gaseous sampling, during staff's handheld needle tubing handle inserted the puncture syringe needle and awaited measuring the packing material, through the micro vacuum pump with the gaseous suction gas pipeline of sampling, because the puncture syringe needle can not cause big opening destruction to the packing material that awaits measuring, avoided packing gas to diffuse fast to the surrounding environment in to and ambient air sneaks into the sampling gas, the degree of difficulty of admitting air and gathering is lower, has ensured the accuracy of gas analysis result.

Wherein, be provided with the needle tubing jack on the host computer shell, after the sampling operation was accomplished, with needle tubing handle cartridge in the needle tubing jack, and the puncture needle head stretches into the inside of host computer shell, avoided sharp-pointed syringe needle to expose and cause unexpected injury, when needing gaseous sampling, directly extract the needle tubing handle from the needle tubing jack can, convenient operation and security are good.

The main case is also provided with a display screen and a printing assembly, the display screen can display the content of carbon dioxide and the content of oxygen, and the printing assembly is used for printing the result of gas analysis and can visually display the analysis result of the sampled gas. In addition, two ventilation windows are formed in the main case, the micro vacuum pump is located on the heat dissipation channel between the two ventilation windows, the heat supply can be rapidly emitted outwards when the micro vacuum pump operates, and the high-temperature condition inside the analyzer is avoided.

Drawings

Fig. 1 is a schematic perspective view of a headspace gas analyzer in an embodiment of the headspace gas analyzer of the present invention;

fig. 2 is a schematic front view of a headspace gas analyzer in an embodiment of the headspace gas analyzer of the present invention;

fig. 3 is a schematic diagram of a headspace gas analyzer according to an embodiment of the present invention.

In the figure: 1. a main chassis; 10. a needle tube jack; 11. a base plate; 12. a front panel; 13. a first side wall; 14. a second side wall; 15. a ventilation screen; 16. a turbulence blocking piece; 2. a needle tube handle; 20. a puncture needle head; 21. a mesh filter;

3. a gas line; 4. a control circuit board; 40. a micro vacuum pump; 41. a carbon dioxide sensor; 42. an oxygen sensor; 5. a display screen; 50. a beautiful seam decoration block; 6. a printing assembly.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In embodiment 1 of the headspace gas analyzer of the present invention, as shown in fig. 1 to 3, the headspace gas analyzer includes a main housing 1, a needle tube handle 2, a gas pipeline 3, and a control circuit board 4, a micro vacuum pump 40, a carbon dioxide sensor 41, and an oxygen sensor 42, which are disposed inside the main housing 1; one end of the gas pipeline 3 is connected with the needle tube handle 2, the other end of the gas pipeline 3 is connected with the micro vacuum pump 40, and the carbon dioxide sensor 41 and the oxygen sensor 42 are connected in series on the gas pipeline 3; the needle tube handle 2 is provided with a puncture needle head 20, the inside of the needle tube handle 2 is provided with a sieve pore filter 21, the main case 1 is provided with a needle tube jack 10, and the needle tube jack 10 is matched with the needle tube handle 2 in a plug-in manner so that the puncture needle head 20 can be inserted into the main case 1.

The main case 1 is also provided with a display screen 5 and a printing component 6, and the carbon dioxide sensor 41, the oxygen sensor 42, the display screen 5 and the printing component 6 are respectively electrically connected with the control circuit board 4; the display screen 5 is used for displaying the content of carbon dioxide and the content of oxygen in the sampled gas, and the printing assembly 6 is used for printing the result of gas analysis; two ventilation windows are formed in the main case 1, the two ventilation windows are arranged on opposite side walls of the main case 1, the micro vacuum pump 40 is located on a heat dissipation channel between the two ventilation windows, and the ventilation screen 15 is installed at the ventilation windows.

This headspace gas analyzer has adopted main casing 1, needle tube handle 2, gas pipeline 3 to and locate the inside control circuit board 4 of main casing 1, micro vacuum pump 40, carbon dioxide sensor 41 and oxygen sensor 42's structural style, and gas pipeline 3 is connected between needle tube handle 2 and micro vacuum pump 40, and carbon dioxide sensor 41 and oxygen sensor 42 concatenate in the gas pipeline, and install puncture needle 20 on the needle tube handle 2. When gaseous sampling, on the staff handheld needle tubing handle 2 inserted the packing material that awaits measuring with puncture syringe needle 20, through micro vacuum pump 40 with the gaseous suction gas of sampling in gas piping 3, because puncture syringe needle 20 can not cause big open-ended destruction to the packing material that awaits measuring, avoided packing gas to diffuse fast to the surrounding environment in to and ambient air sneaks into the sampling gas, the degree of difficulty of admitting air and gathering is lower, has ensured the accuracy of gas analysis result.

Wherein, be provided with needle tubing jack 10 on the host computer shell 1, after the sampling operation is accomplished, with needle tubing handle 2 cartridge in needle tubing jack 10, and puncture syringe needle 20 stretches into the inside of host computer shell 1, avoided sharp-pointed syringe needle to expose and cause unexpected injury, when needing gaseous sampling, directly extract needle tubing handle 2 from needle tubing jack 10 can, convenient operation and security are good. The main chassis 1 is also provided with a display screen 5 and a printing assembly 6, the display screen 5 can display the content of carbon dioxide and the content of oxygen, the printing assembly 6 is used for printing the result of gas analysis, and the analysis result of the sampled gas can be visually displayed. In addition, two ventilation windows are arranged on the main case 1, and the micro vacuum pump 40 is positioned on a heat dissipation channel between the two ventilation windows, so that the heat supply can be quickly dissipated outwards when the micro vacuum pump 40 operates, and the high-temperature condition inside the analyzer is avoided.

In this embodiment, the main chassis 1 has a wedge-shaped outline, the main chassis 1 includes a bottom plate 11, a back plate connected to a rear side edge of the bottom plate 11, a front plate 12, a first side wall 13 and a second side wall 14, the front plate 12 is obliquely connected between a front edge of the bottom plate 11 and an upper edge of the back plate, the first side wall 13 and the second side wall 14 are fixedly connected to two sides of the bottom plate 11, and the first side wall 13 and the second side wall 14 are both in a right triangle shape. The display screen 5 is arranged in the middle of the front panel 12, the printing component 6 is arranged at the rear part of the display screen 5, and the needle tube jack 10 is arranged at the lower left corner of the front panel 12. The display screen 5 and the printing component 6 are arranged on the front panel 12 of the main case 1, so that the staff can directly check and obtain the detection result, and the requirements of humanized design are met.

As a further preferable scheme, the control circuit board 4 is fixedly installed on the bottom plate 11 of the main chassis 1, and the plate surface of the control circuit board 4 is arranged perpendicular to the bottom plate 11 of the main chassis, and the carbon dioxide sensor 41 and the oxygen sensor 42 are respectively installed on the control circuit board 4. In addition, a through hole is formed in the side wall of the main case 1, a through joint 30 is installed in the through hole, the gas pipeline 3 comprises an internal pipeline and an external pipeline, and the external pipeline is connected between the through joint 30 and the needle tube handle 2; an internal pipe is connected between the through-joint 30 and the micro vacuum pump 40, and a carbon dioxide sensor 41 and an oxygen sensor 42 are located on the internal pipe.

Specifically, a main window is arranged on the main case 1, and a seam beautifying decoration block 50 is filled between the main window and the display screen 5, so that the appearance regularity of the front panel 12 is improved. Moreover, the gas pipeline 3 is a Teflon capillary tube, and the turbulence blocking piece 16 is further installed outside the ventilation screen 15, so that a good dustproof effect can be achieved on the premise of ensuring smooth ventilation and heat dissipation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A headspace gas analyzer is characterized by comprising a main machine shell, a needle tube handle, a gas pipeline, a control circuit board, a micro vacuum pump, a carbon dioxide sensor and an oxygen sensor, wherein the control circuit board, the micro vacuum pump, the carbon dioxide sensor and the oxygen sensor are arranged in the main machine shell;

the needle tube handle is provided with a puncture needle head, a sieve mesh filter is arranged inside the needle tube handle, the main case is provided with a needle tube jack, and the needle tube jack is in plug-in fit with the needle tube handle so that the puncture needle head can be inserted into the main case;

2. The headspace gas analyzer of claim 1, wherein the mainframe housing has a wedge-shaped profile, the mainframe housing includes a bottom plate, a back plate, a first sidewall, a second sidewall, and a front panel, the back plate is connected to a rear side edge of the bottom plate, the front panel is connected between a front edge of the bottom plate and an upper edge of the back plate in an inclined manner, the first sidewall and the second sidewall are fixedly connected to both sides of the bottom plate, and the first sidewall and the second sidewall are each in a right triangle shape.

3. The headspace gas analyzer of claim 2, wherein the display screen is disposed at a middle portion of the front panel, the print assembly is disposed at a rear portion of the display screen, and the needle cannula receptacle is disposed at a lower left corner of the front panel.

4. The headspace gas analyzer according to claim 2, wherein the control circuit board is fixedly mounted on the bottom plate of the main housing, a plate surface of the control circuit board is arranged perpendicular to the bottom plate of the main housing, and the carbon dioxide sensor and the oxygen sensor are respectively mounted on the control circuit board.

5. The headspace gas analyzer according to claim 2, wherein a through hole is formed in a sidewall of the main housing, a through joint is installed in the through hole, the gas line comprises an inner line and an outer line, and the outer line is connected between the through joint and the needle tube handle; the internal pipeline is connected between the straight joint and the micro vacuum pump, and the carbon dioxide sensor and the oxygen sensor are located on the internal pipeline.

6. The headspace gas analyzer according to claim 1, wherein a main window is formed in the main housing, and a seam beautifying decoration block is filled between the main window and the display screen.

7. The headspace gas analyzer of claim 1, wherein the gas line is a teflon capillary.

8. The headspace gas analyzer of claim 1, wherein a flow perturbation baffle is further mounted to an exterior of the vent screen.