CN218917305U - Head space sampler with uniform sample heating - Google Patents

Abstract

The utility model discloses a head space sample injector with a uniform sample heated, which is provided with a uniform heated head space sample injector body, wherein a heating bottom plate is supported by a rigid spring to lean against the bottom of a head space sample injection bottle, so that the bottom of the head space sample injection bottle is heated, and the head space sample injection bottle with different heights can be used; the strong magnetic block is driven by the sliding block to drive the corresponding adsorbed annular heating side plate to slide up and down in the rectangular heat insulation frame, the heating position of the annular heating side plate is convenient to adjust, the lead connected with the annular heating side plate is left with enough length and is designed into a spring shape, the telescopic adjustment is convenient, the uniform heating requirement on the headspace sample injection bottle with different heights is met, and the upper end and the lower end of the headspace sample injection bottle are heated at uniform temperature by the cooperation of the temperature control structure.

Description

Head space sampler with uniform sample heating

Technical Field

The utility model relates to the technical field of headspace injectors, in particular to a headspace injector with a uniformly heated sample.

Background

The headspace sampler is a convenient and quick sample pretreatment method in gas chromatography, and adopts a chromatographic separation analysis method with gas as a mobile phase, wherein a vaporized sample is carried into a chromatographic column by carrier gas, and the separated state is formed by different flowing-out times of the carrier gas and different acting forces of molecules of each component in the sample through a fixed phase in the column.

The temperature of the heating of both ends is inconsistent about the head space sampling bottle when current device is in use, leads to detecting the sample and easily repeatedly detects, consequently, design practicality is strong and can heat respectively the head space sampling bottle upper and lower both sides, and cyclic annular heating curb plate can adjust the heating position from top to bottom in the external control, satisfy the head space sampling bottle uniform heating demand to not co-altitude, cooperation temperature control structure is to head space sampling bottle upper and lower both ends carry out a kind of sample of the heating of unifying the temperature and be heated even head space sampling ware is very necessary.

Disclosure of Invention

The utility model aims to provide a headspace sampler with a uniform sample heating function, so as to solve the problems in the background technology.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a sample is heated even head space injector, includes the rectangle base, rectangle base upper edge four corners department all fixedly mounted has the bracing piece, four the upper end fixed mounting of bracing piece has the flat board, the position evenly is equipped with evenly receives the head space injector body between rectangle base inner chamber bottom surface and the flat board, and evenly receives the quantity of head space injector body and have four, four evenly receive head space injector body upper end fixedly connected with intake pipe structure and exhaust detection structure, evenly receive head space injector body includes the through-hole of opening in flat board upper surface, the fixed external screw thread pipe that is equipped with of through-hole upper edge, external screw thread pipe outer wall spiro union has the dome, the fixed mounting in through-hole lower limb outside has the rectangle heat insulating frame, the fixed mounting in rectangle base upper surface has the cylinder, the cylinder outer wall has cup jointed the rigid spring, and rigid spring upper end fixed mounting has the heating bottom plate, the heating bottom plate upper surface is equipped with the headspace sample bottle, intake pipe structure and exhaust detection structure lower extreme run through the circle cover upper surface, and intake pipe structure and exhaust detection structure lower extreme peg graft in the headspace sample bottle, the annular heating curb plate has all been pegged graft in both sides about the rectangle heat insulating frame inner wall, and annular heating curb plate lateral surface coating has the iron metal layer, the rectangle base outer wall corresponds evenly and receives the headspace sample ware body and be equipped with ferromagnetic slider structure, and ferromagnetic slider structure inboard end adsorbs on the iron metal layer of annular heating curb plate lateral surface, be equipped with temperature control structure on headspace sample bottle outer wall and the rectangle base outer wall, and temperature control structure is connected with annular heating curb plate and heating bottom plate electricity respectively.

According to the technical scheme, the ferromagnetic sliding block structure comprises a strip-shaped sliding groove which is longitudinally formed in the outer wall of the rectangular base and corresponds to the uniform heated headspace sampler body, the upper side and the lower side of the strip-shaped sliding groove are respectively and slidably clamped with a sliding block, the inner side end of the sliding block is fixedly provided with a ferromagnetic block, and the inner side end of the ferromagnetic block is adsorbed on an iron metal layer which corresponds to the outer side face of the annular heating side plate.

According to the technical scheme, the temperature control structure comprises a first temperature sensor embedded and assembled at the upper end of the outer wall of the headspace sample injection bottle, a second temperature sensor is embedded and assembled at the bottom surface of the headspace sample injection bottle, a controller is fixedly assembled on the outer wall of the rectangular base, and the controller is respectively electrically connected with the first temperature sensor, the second temperature sensor, the annular heating side plate and the heating bottom plate.

According to the technical scheme, the air inlet pipe structure comprises air inlet branch pipes inserted into the upper ends of the headspace sampling bottles, the four air inlet branch pipes are fixedly communicated with X-shaped connecting pipes, an air inlet main pipe is fixedly communicated with the middle part of the upper surface of each X-shaped connecting pipe, the upper ends of the air inlet main pipes are in threaded connection with cover plates, and the air inlet branch pipes are located inside the lower ends of the exhaust detection structures.

According to the technical scheme, exhaust detection structure is including pegging graft in the blast pipe of headspace sampling bottle upper end, the blast pipe cup joints in the intake pipe outside, and both ends seal the parcel in the intake pipe outside about the blast pipe, blast pipe medial surface upper end fixedly connected with output tube, four the fixed intercommunication of output tube medial surface has the detection collecting pipe.

According to the technical scheme, the detection collecting pipe is including fixed intercommunication in four the gas collecting tube of output tube inboard end, gas collecting tube upper end fixed intercommunication has the detection box, detection box upper end opening part spiro union has the shutoff apron, gas collecting tube outer wall lower extreme fixed intercommunication has the discharge pipe, and the discharge pipe outside end extends to the outside, gas collecting tube inner wall upper end fixed mounting has the fan, and fan wind-force orientation top.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the uniform heated headspace sample injector body is arranged, the heating bottom plate is supported by the rigid spring to lean against the bottom of the headspace sample injector bottle, so that the bottom of the headspace sample injector bottle is heated, and the headspace sample injector body can be used for headspace sample injector bottles with different heights; the strong magnetic block is driven by the sliding block to drive the corresponding adsorbed annular heating side plate to slide up and down in the rectangular heat insulation frame, the heating position of the annular heating side plate is convenient to adjust, the lead connected with the annular heating side plate is left with enough length and is designed into a spring shape, the telescopic adjustment is convenient, the uniform heating requirement on the headspace sample injection bottle with different heights is met, and the upper end and the lower end of the headspace sample injection bottle are heated at uniform temperature by the cooperation of the temperature control structure.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a schematic diagram of the structure of the homogeneous heated headspace injector body and temperature control structure of the present utility model;

FIG. 3 is a schematic view of the structure of the test collection tube of the present utility model.

In the figure: the device comprises a 1-rectangular base, a 2-supporting rod, a 3-flat plate, a 4-uniform heated headspace sampler body, a 41-through hole, a 42-external threaded pipe, a 43-round cover, a 44-rectangular heat insulation frame, a 45-annular heating side plate, a 46-cylinder, a 47-rigid spring, a 48-heating bottom plate, a 5-ferromagnetic sliding block structure, a 51-strip sliding groove, a 52-sliding block, a 53-ferromagnetic block, a 6-air inlet pipe structure, a 61-X-shaped connecting pipe, a 62-air inlet main pipe, a 63-air inlet branch pipe, a 7-air exhaust detection structure, a 71-air exhaust pipe, a 72-output pipe, a 73-detection collecting pipe, 731-air collecting pipe, 732-detection box, 733-blocking cover plate, 734-fan, 735-exhaust pipe, an 8-temperature control structure, an 81-first temperature sensor, an 82-second temperature sensor, an 83-controller and a 9-headspace sampler.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides the following technical solutions: the head space sampler with uniform sample heating comprises a rectangular base 1, support rods 2 are fixedly assembled at four corners of the upper edge of the rectangular base 1, a flat plate 3 is fixedly assembled at the upper ends of the four support rods 2, uniform heat-receiving head space sampler bodies 4 are uniformly assembled between the bottom surface of an inner cavity of the rectangular base 1 and the flat plate 3, the number of the uniform heat-receiving head space sampler bodies 4 is four, the upper ends of the four uniform heat-receiving head space sampler bodies 4 are fixedly connected with an air inlet pipe structure 6 and an exhaust detection structure 7, the uniform heat-receiving head space sampler bodies 4 comprise through holes 41 which are formed on the upper surface of the flat plate 3, external thread pipes 42 are fixedly assembled at the upper edges of the through holes 41, round covers 43 are fixedly assembled at the outer walls of the external thread pipes 42, rectangular heat-insulating frames 44 are fixedly assembled at the outer sides of the lower edges of the through holes 41, cylinders 46 are fixedly assembled at the upper surface of the rectangular base 1, the outer wall of the cylinder 46 is sleeved with a rigid spring 47, the upper end of the rigid spring 47 is fixedly provided with a heating bottom plate 48, the upper surface of the heating bottom plate 48 is provided with a headspace sampling bottle 9, the lower ends of an air inlet pipe structure 6 and an exhaust detection structure 7 penetrate through the upper surface of a round cover 43, the lower ends of the air inlet pipe structure 6 and the exhaust detection structure 7 are inserted into the headspace sampling bottle 9, the upper side and the lower side of the inner wall of a rectangular heat insulation frame 44 are respectively and slidably inserted with an annular heating side plate 45, the outer side surface of the annular heating side plate 45 is coated with an iron metal layer, the outer wall of the rectangular base 1 is correspondingly and uniformly provided with a ferromagnetic sliding block structure 5, the inner side end of the ferromagnetic sliding block structure 5 is adsorbed on the iron metal layer on the outer side surface of the annular heating side plate 45, the outer wall of the headspace sampling bottle 9 and the outer wall of the rectangular base 1 are provided with a temperature control structure 8, and the temperature control structure 8 is electrically connected to the annular heating side plate 45 and the heating bottom plate 48, respectively.

The even heated headspace sample injector body 4 is arranged, the heating bottom plate 48 is supported by the rigid spring 47 to lean against the bottom of the headspace sample injection bottle 9, and the bottom of the headspace sample injection bottle 9 is heated, so that the headspace sample injection bottle 9 with different heights can be used; the strong magnetic block 53 is driven by the sliding block 52 to drive the corresponding adsorbed annular heating side plate 45 to slide up and down in the rectangular heat insulation frame 44, so that the heating position of the annular heating side plate 45 is convenient to adjust, the lead wire connected with the annular heating side plate 45 is left with enough length and is designed to be spring-shaped, the telescopic adjustment is convenient, the uniform heating requirements of the headspace sample injection bottles 9 with different heights are met, and the upper end and the lower end of the headspace sample injection bottle 9 are heated at uniform temperature by the cooperation of the temperature control structure 8.

Specifically, the ferromagnetic sliding block structure 5 comprises a strip-shaped sliding groove 51 longitudinally arranged on the outer wall of the rectangular base 1 corresponding to the uniform heated headspace sampler body 4, sliding blocks 52 are clamped on the upper side and the lower side of the strip-shaped sliding groove 51, a ferromagnetic block 53 is fixedly assembled at the inner side end of the sliding block 52, and the inner side end of the ferromagnetic block 53 is adsorbed on an iron metal layer corresponding to the outer side surface of the annular heating side plate 45; the strong magnetic block 53 can drive the annular heating side plate 45 with the iron metal layer on the outer side surface to move up and down.

Specifically, the temperature control structure 8 comprises a first temperature sensor 81 embedded and assembled at the upper end of the outer wall of the headspace sample bottle 9, a second temperature sensor 82 embedded and assembled at the bottom surface of the headspace sample bottle 9, a controller 83 fixedly assembled at the outer wall of the rectangular base 1, and the controller 83 is electrically connected with the first temperature sensor 81, the second temperature sensor 82, the annular heating side plate 45 and the heating bottom plate 48 respectively; the first temperature sensor 81 and the second temperature sensor 82 are respectively used for detecting the temperature of the side wall of the headspace sample bottle 9 and the bottom surface of the headspace sample bottle 9, the temperature detected by the first temperature sensor 81 and the temperature detected by the second temperature sensor 82 are received by the controller 83, and when the temperature changes, the controller 83 controls the annular heating side plate 45 and the heating bottom plate 48 to raise or lower the temperature, so that the temperature is kept within a set range.

Specifically, the air inlet pipe structure 6 comprises air inlet branch pipes 63 inserted into the upper ends of the headspace sample injection bottles 9, the upper ends of the four air inlet branch pipes 63 are fixedly communicated with X-shaped connecting pipes 61, the middle part of the upper surface of each X-shaped connecting pipe 61 is fixedly communicated with an air inlet main pipe 62, the upper ends of the air inlet main pipes 62 are in threaded connection with a cover plate, and the air inlet branch pipes 63 are positioned in the lower end of the exhaust detection structure 7.

Specifically, the exhaust detection structure 7 comprises an exhaust pipe 71 inserted into the upper end of the headspace sample bottle 9, the exhaust pipe 71 is sleeved outside the air inlet pipe 63, the upper end and the lower end of the exhaust pipe 71 are sealed and wrapped outside the air inlet pipe 63, the upper end of the inner side surface of the exhaust pipe 71 is fixedly communicated with an output pipe 72, and the inner ends of the four output pipes 72 are fixedly communicated with a detection collecting pipe 73.

Specifically, the detection collecting pipe 73 includes a gas collecting pipe 731 fixedly connected to the inner ends of the four output pipes 72, a detection box 732 is fixedly connected to the upper end of the gas collecting pipe 731, a plugging cover plate 733 is screwed to the opening of the upper end of the detection box 732, a discharge pipe 735 is fixedly connected to the lower end of the outer wall of the gas collecting pipe 731, the outer end of the discharge pipe 735 extends to the outside, a fan 734 is fixedly mounted on the upper end of the inner wall of the gas collecting pipe 731, and the wind force of the fan 734 is upward; when the temperature is appropriate, a fan 734 connected to an external power supply is turned on to introduce the gas upward into the detection box 732, a sealing cover 733 at the upper end of the detection box 732 is turned on, and the gas is collected from the upper end opening of the detection box 732 to be detected.

Working principle:

the utility model is provided with the uniform heated headspace sample injector body 4, the heating bottom plate 48 is supported by the rigid spring 47 to lean against the bottom of the headspace sample injection bottle 9, and the bottom of the headspace sample injection bottle 9 is heated, so that the use of headspace sample injection bottles 9 with different heights can be satisfied; the strong magnetic block 53 is driven by the sliding block 52 to drive the corresponding adsorbed annular heating side plate 45 to slide up and down in the rectangular heat insulation frame 44, so that the heating position of the annular heating side plate 45 is convenient to adjust, the lead wire connected with the annular heating side plate 45 is left with enough length and is designed to be spring-shaped, the telescopic adjustment is convenient, the uniform heating requirements of the headspace sample injection bottles 9 with different heights are met, and the upper end and the lower end of the headspace sample injection bottle 9 are heated at uniform temperature by the cooperation of the temperature control structure 8.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A head space sampler with a sample heated uniformly is characterized in that: the device comprises a rectangular base (1), support rods (2) are fixedly assembled at four corners of the upper edge of the rectangular base (1), a flat plate (3) is fixedly assembled at the upper ends of the four support rods (2), a uniform heated headspace sampling device body (4) is uniformly assembled between the bottom surface of an inner cavity of the rectangular base (1) and the flat plate (3), the number of the uniform heated headspace sampling device bodies (4) is four, an air inlet pipe structure (6) and an exhaust detection structure (7) are fixedly connected at the upper ends of the four uniform heated headspace sampling device bodies (4), the uniform heated headspace sampling device body (4) comprises a through hole (41) formed in the upper surface of the flat plate (3), an external thread pipe (42) is fixedly assembled at the upper edge of the through hole (41), a round cover (43) is fixedly assembled at the outer wall of the external thread pipe (42), a rectangular heat insulation frame (44) is fixedly assembled at the outer side of the lower edge of the through hole (41), a cylinder (46) is fixedly assembled at the upper surface of the rectangular base (1), a cylinder (47) is fixedly assembled at the outer wall of the upper surface of the rectangular base (46), a rigid spring (47) is fixedly sleeved on the upper surface of the air inlet pipe (48), a rigid air inlet pipe (48) is fixedly assembled at the upper end of the air inlet pipe (7), and the rigid air inlet pipe (48) is fixedly connected with a heating structure, and intake pipe structure (6) and exhaust detection structure (7) lower extreme are pegged graft in headspace sampling bottle (9), both sides all are slided and are pegged graft about rectangle insulating frame (44) inner wall have annular heating curb plate (45), and annular heating curb plate (45) outside face coats and have iron metal level, rectangle base (1) outer wall corresponds even heat-receiving headspace sampling body (4) and is equipped with ferromagnetic slider structure (5), and ferromagnetic slider structure (5) inboard end adsorb on the iron metal level of annular heating curb plate (45) lateral surface, be equipped with temperature control structure (8) on headspace sampling bottle (9) outer wall and rectangle base (1) outer wall, and temperature control structure (8) are connected with annular heating curb plate (45) and heating bottom plate (48) electricity respectively.

2. The headspace sampler with uniform heating of a sample according to claim 1, wherein: the ferromagnetic sliding block structure (5) comprises a strip-shaped sliding groove (51) which is longitudinally formed in the outer wall of the rectangular base (1) and corresponds to the uniform heated headspace sampler body (4), sliding clamps are arranged on the upper side and the lower side of the strip-shaped sliding groove (51) respectively, a ferromagnetic block (53) is fixedly assembled at the inner side end of the sliding block (52), and the inner side end of the ferromagnetic block (53) is adsorbed on an iron metal layer corresponding to the outer side surface of the annular heating side plate (45).

3. The headspace sampler with uniform heating of a sample according to claim 1, wherein: the temperature control structure (8) comprises a first temperature sensor (81) embedded and assembled at the upper end of the outer wall of the headspace sample injection bottle (9), a second temperature sensor (82) is embedded and assembled at the bottom surface of the headspace sample injection bottle (9), a controller (83) is fixedly assembled on the outer wall of the rectangular base (1), and the controller (83) is respectively electrically connected with the first temperature sensor (81), the second temperature sensor (82), the annular heating side plate (45) and the heating bottom plate (48).

4. The headspace sampler with uniform heating of a sample according to claim 1, wherein: the air inlet pipe structure (6) comprises air inlet branch pipes (63) inserted into the upper ends of the headspace sample injection bottles (9), X-shaped connecting pipes (61) are fixedly communicated with the upper ends of the air inlet branch pipes (63), an air inlet main pipe (62) is fixedly communicated with the middle of the upper surface of each X-shaped connecting pipe (61), a cover plate is screwed to the upper end of each air inlet main pipe (62), and the air inlet branch pipes (63) are located inside the lower ends of the exhaust detection structures (7).

5. The headspace sampler with uniform heating of a sample according to claim 4, wherein: the exhaust detection structure (7) comprises an exhaust pipe (71) inserted into the upper end of the headspace sample injection bottle (9), the exhaust pipe (71) is sleeved outside the air inlet branch pipe (63), the upper end and the lower end of the exhaust pipe (71) are sealed and wrapped outside the air inlet branch pipe (63), the upper end of the inner side surface of the exhaust pipe (71) is fixedly communicated with an output pipe (72), and the inner ends of the four output pipes (72) are fixedly communicated with a detection collecting pipe (73).

6. The headspace sampler with uniform heating of a sample according to claim 5, wherein: the detection collecting pipe (73) comprises a gas collecting pipe (731) fixedly communicated with the inner side ends of the four output pipes (72), a detection box (732) is fixedly communicated with the upper end of the gas collecting pipe (731), a blocking cover plate (733) is screwed to the opening of the upper end of the detection box (732), a discharge pipe (735) is fixedly communicated with the lower end of the outer wall of the gas collecting pipe (731), the outer side end of the discharge pipe (735) extends to the outside, a fan (734) is fixedly arranged at the upper end of the inner wall of the gas collecting pipe (731), and the wind force of the fan (734) is upward.

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