CN212228857U - Headspace sample injector capable of effectively ensuring uniform heating of sample - Google Patents

Abstract

The utility model provides a can effectively guarantee sample even headspace sample injector of being heated. Can effectively guarantee that sample is heated even headspace sample injector includes the base, heating mechanism and circulation mechanism, the pedestal mounting is in the heating chamber in headspace sample injector body, fixed mounting has many the same sample bottles of specification to place the pipe on the base, and set up a plurality of evenly distributed's through-hole on the pipe wall of sample bottle placement pipe, the outside that pipe was placed to each sample bottle all installs heating mechanism, and heating mechanism is including the installation pipe support, alloy zone of heating and insulating heater strip, installation pipe support fixed mounting is at the base and places the pipe parcel with the sample bottle, and be equipped with the alloy zone of heating in the installation pipe support, there is insulating heater strip in the alloy zone of heating, circulation mechanism for improving heating mechanism heat degree of consistency installs on the base. The utility model provides a can effectively guarantee that sample is heated even headspace sample injector has the advantage of avoiding the sample cell local overheat problem to appear.

Description

Headspace sample injector capable of effectively ensuring uniform heating of sample

Technical Field

The utility model relates to a check out test set technical field especially relates to a can effectively guarantee sample even headspace injector of being heated.

Background

A headspace sample injector is a convenient and fast sample pretreatment method in gas chromatography, and is characterized in that a sample to be detected is placed in a closed container, volatile components are volatilized from a sample matrix through heating, balance is achieved in gas and liquid, and top gas is directly extracted for chromatographic analysis, so that the components and the content of the volatile components in the sample are detected.

The existing headspace sample injector has the problem that the heating is uneven at different bottle positions or at different upper and lower parts of the same bottle position, so that the sample repeatability is poor and the analysis and detection errors are large.

Therefore, there is a need to provide a headspace sampler capable of effectively ensuring that the sample is uniformly heated to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an avoid the local overheated problem's of appearance of sample cell ability effectively to guarantee that the sample is heated even headspace sample injector.

The utility model provides a can effectively guarantee sample even headspace sample injector of being heated includes: base, heating mechanism and circulation mechanism, the pedestal mounting is in the heating chamber in headspace injector body, fixed mounting has many the same sample bottles of specification to place the pipe on the base, and the sample bottle places the through-hole of seting up a plurality of evenly distributed on the pipe wall of pipe, and the outside that the pipe was placed to each sample bottle is all installed heating mechanism, and heating mechanism are including installation pipe support, alloy zone of heating and insulating heater strip, installation pipe support fixed mounting is at the base and places the pipe parcel with the sample bottle, and is equipped with the alloy zone of heating in the installation pipe support, be equipped with the recess in the alloy zone of heating, and inlay in the recess and have insulating heater strip for improve the heating mechanism heat degree of consistency circulation mechanism installs on the base.

Preferably, circulation mechanism is including installation pipe, exhaust fan and shunt tubes, installation pipe fixed mounting is in the center department of base, and the intraductal fixed mounting of installation has the exhaust fan, the air outlet of installation pipe is respectively through the air intake fixed connection of installation pipe support in pipe and each heating mechanism, and a plurality of specifications are the same the shunt tubes passes through the fixed cup joint of support and places the pipe on the sample bottle, and the shunt tubes passes through the air intake fixed connection of pipe and installation pipe support, each set up the air outlet that a plurality of annular distributes on the inner tube wall of shunt tubes.

Preferably, the groove arranged in the alloy heating layer is a thread groove, the insulating heating wire is embedded in the thread groove in a threaded mode, and the insulating heating wire is electrically connected with an external electrifying wire.

Preferably, a protective casing for protecting the heating mechanism and the circulating mechanism is mounted on the base.

Preferably, the height difference of the top of the sample bottle placing tube extending out of the heating mechanism and provided with the tube frame is 2-3.5 cm.

Compared with the prior art, the utility model provides a can effectively guarantee sample even headspace injector of being heated has following beneficial effect:

1. the utility model discloses open insulating heater strip, because insulating heater strip evenly distributed is in whole heating space to make the heating more even, because it is the inner wall that insulating heater strip directly inlays, and the interval between the sample bottle is less, consequently more quick heating intensifies, improves heating rate and saves heat time, effectual reduction energy resource consumption.

2. The utility model discloses open the exhaust fan and make the air current that runs off out enter into the shunt tubes through the exhaust fan, because the shunt tubes sets up the multiunit and set up the air outlet that the annular distributes, therefore the hot gas flow can flow back to the installation pipe support, makes the more even of the inside gas flow of installation pipe support under the drive of hot gas flow simultaneously, avoids the local overheated problem of appearance of sample cell.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of a headspace sampler that can effectively ensure uniform heating of a sample according to the present invention;

FIG. 2 is a schematic view of the interior of FIG. 1;

fig. 3 is a schematic structural view of the heating mechanism shown in fig. 1.

Reference numbers in the figures: 1. the device comprises a base 2, a sample bottle placing pipe 3, a through hole 4, a heating mechanism 41, a mounting pipe frame 42, an alloy heating layer 43, an insulating heating wire 5, a circulating mechanism 51, a mounting pipe 52, an exhaust fan 53, a shunt pipe 6 and a protective shell.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a headspace sampler capable of effectively ensuring uniform heating of a sample according to the present invention; FIG. 2 is a schematic view of the interior of FIG. 1; fig. 3 is a schematic structural view of the heating mechanism shown in fig. 1. Can effectively guarantee that sample is heated even headspace sample injector includes: a susceptor 1, a heating means 4 and a circulation means 5.

In the specific implementation process, as shown in fig. 1 and fig. 2, the base 1 is installed in a heating chamber in the headspace sample injector body, the base 1 is fixedly provided with a plurality of sample bottle placing pipes 2 with the same specification, a plurality of through holes 3 are formed in the pipe walls of the sample bottle placing pipes 2, a heating mechanism 4 is installed outside each sample bottle placing pipe 2, each heating mechanism 4 comprises an installation pipe frame 41, an alloy heating layer 42 and an insulating heating wire 43, the installation pipe frame 41 is fixedly installed on the base 1 and wraps the sample bottle placing pipes 2, the alloy heating layer 42 is arranged in the installation pipe frame 41, a groove is formed in the alloy heating layer 42, the insulating heating wires 43 are embedded in the groove, and the height difference of the installation pipe frame 41 extending out of the top of the sample bottle placing pipe 2 in the heating mechanism 4 is 2-3.5 cm.

It should be noted that: during the use, lay the sample bottle place the sample bottle in pipe 2, open insulating heater strip 43, because insulating heater strip 43 evenly distributed is in whole heating space to make the heating more even, because it is the inner wall that directly inlays of insulating heater strip 43, and the sample bottle between the interval less, consequently more quick heating intensifies, improves heating rate save heating time, effectual reduction energy consumption.

The groove arranged in the alloy heating layer 42 is a thread groove, the insulating heating wire 43 is embedded in the thread groove in a threaded manner, the insulating heating wire 43 is electrically connected with an external electrifying lead, and the length of the insulating heating wire 43 is increased by the thread groove, so that the heating efficiency of the insulating heating wire 43 is better.

Referring to fig. 1, a circulating mechanism 5 for improving the heat uniformity of the heating mechanisms 4 is installed on the base 1, and the circulating mechanism 5 includes an installation pipe 51, an exhaust fan 52 and a shunt pipe 53, the installation pipe 51 is fixedly installed at the center of the base 1, the exhaust fan 52 is fixedly installed in the installation pipe 51, the air outlet of the installation pipe 51 is fixedly connected with the air inlet of the installation pipe frame 41 in each heating mechanism 4 through a guide pipe, a plurality of shunt pipes 53 with the same specification are fixedly sleeved on the sample bottle placing pipe 2 through a bracket, the shunt pipe 53 is fixedly connected with the air inlet of the installation pipe frame 41 through a guide pipe, and a plurality of air outlets distributed in a ring shape are opened on the inner pipe wall of each shunt pipe 53.

It should be noted that: after heating mechanism 4 opens a period of time, open exhaust fan 52 and make the air current that runs off enter into shunt tubes 53 through exhaust fan 52, because shunt tubes 53 set up the multiunit and set up the air outlet that the annular distributes, consequently the hot gas flow can flow back to installation pipe support 41, makes the more even that the inside gas of installation pipe support 41 flows under the drive of hot gas flow simultaneously, avoids the overheated problem of sample cell local appearance.

Wherein, the base 1 is provided with a protective shell 6 for protecting the heating mechanism 4 and the circulation mechanism 5, thereby improving the protection of the heating mechanism 4 and the circulation mechanism 5.

The utility model provides a can effectively guarantee sample even headspace sample injector that is heated's theory of operation as follows:

during the use, lay the sample bottle in the sample bottle places pipe 2, open insulating heater strip 43, because insulating heater strip 43 evenly distributed is in whole heating space, thereby make the heating more even, because it is the inner wall that insulating heater strip 43 directly inlays, and the interval between the sample bottle is less, consequently more quick heating intensifies, improve heating rate and save heating time, effectual reduction energy resource consumption, and after heating mechanism 4 opened a period, open exhaust fan 52 and make the air current that runs off enter into shunt tubes 53 through exhaust fan 52, because shunt tubes 53 set up the multiunit and set up the air outlet of annular distribution, therefore the hot gas flow can flow back to installation pipe support 41, make installation pipe support 41 inside gas flow more even under the drive of hot gas flow simultaneously, avoid the overheated problem of sample tube local appearance.

The utility model discloses circuit and control that relate to are prior art, do not carry out too much repetition here.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.

Claims (5)

1. The utility model provides a can effectively guarantee sample even headspace sample injector that is heated which characterized in that includes:

the sample bottle sampler comprises a base (1), wherein the base (1) is arranged in a heating chamber in a headspace sample injector body, a plurality of sample bottle placing pipes (2) with the same specification are fixedly arranged on the base (1), and the pipe wall of each sample bottle placing pipe (2) is provided with a plurality of through holes (3) which are uniformly distributed;

the heating mechanism (4) is installed outside each sample bottle placing pipe (2), the heating mechanism (4) comprises an installation pipe frame (41), an alloy heating layer (42) and an insulating heating wire (43), the installation pipe frame (41) is fixedly installed on the base (1) and wraps the sample bottle placing pipes (2), the alloy heating layer (42) is arranged in the installation pipe frame (41), a groove is formed in the alloy heating layer (42), and the insulating heating wire (43) is embedded in the groove;

and the circulating mechanism (5) is used for improving the heat uniformity of the heating mechanism (4), and the circulating mechanism (5) is arranged on the base (1).

2. The headspace sampler capable of effectively ensuring uniform heating of the sample according to claim 1, wherein the circulating mechanism (5) comprises a mounting tube (51), an exhaust fan (52) and a plurality of dividing tubes (53), the mounting tube (51) is fixedly mounted at the center of the base (1), the exhaust fan (52) is fixedly mounted in the mounting tube (51), the air outlets of the mounting tube (51) are respectively fixedly connected with the air inlets of the mounting tube frames (41) in the heating mechanisms (4) through a guide tube, the dividing tubes (53) with the same specification are fixedly connected to the sample bottle placing tube (2) through a bracket, the dividing tubes (53) are fixedly connected with the air inlets of the mounting tube frames (41) through a guide tube, and the inner tube wall of each dividing tube (53) is provided with a plurality of air outlets distributed in an annular shape.

3. The headspace sampler capable of effectively ensuring uniform heating of the sample according to claim 1, wherein the groove arranged in the alloy heating layer (42) is a thread groove, the insulating heating wire (43) is embedded in the thread groove in a threaded manner, and the insulating heating wire (43) is electrically connected with an external energizing wire.

4. The headspace sampler capable of effectively ensuring uniform heating of the sample according to claim 1, wherein the base (1) is provided with a protective housing (6) for protecting the heating mechanism (4) and the circulating mechanism (5).

5. The headspace sampler capable of effectively ensuring uniform heating of the sample according to claim 1, wherein the height difference of the top of the sample bottle holding tube (2) extending out of the heating mechanism (4) and the mounting tube rack (41) is 2-3.5 cm.

Images