CN211318329U

CN211318329U - Headspace sample injector for halohydrocarbon in detection environment

Info

Publication number: CN211318329U
Application number: CN202020044720.9U
Authority: CN
Inventors: 魏亚洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-08-21
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses a halohydrocarbon is with headspace sample injector in detection environment relates to check out test set technical field. This halohydrocarbon is with headspace sample injector in detection ring border, which comprises a bod, the top fixed mounting of organism has the detector, and the sense terminal of detector runs through the interior top of organism, and fixed mounting has waterproof electric heater on the interior back wall of organism, and the left side fixed mounting of organism has first air pump, and the gas outlet of first air pump is connected and feeds through with the left end of first air duct, and first air duct runs through the interior left wall of organism. This halohydrocarbon is with headspace sample injector in detecting environment, through the operation of clean mechanism, can effectively wash the organism inside behind the detection sample, ensure that no gas molecule or liquid molecule remain, simultaneously based on its mode of operation, can realize the effective clean effect to the organism internal top, and then avoided sample gas to rise in the heating process and the organism internal top contact condensation form the remaining condition of water droplet and appear.

Description

Headspace sample injector for halohydrocarbon in detection environment

Technical Field

The utility model relates to a check out test set technical field specifically is a headspace sample injector for halohydrocarbon among the detection ring border.

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 a gas-liquid (or gas-solid) phase, 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 headspace sampling technology can avoid a tedious and tedious sample pretreatment process, avoid interference of an organic solvent on analysis, and reduce pollution to a chromatographic column and a sampling port. The instrument can be connected with gas chromatographs of various models at home and abroad. The headspace sampler eliminates the complicated error-prone steps and allows for a large amount of useful information to be obtained in a relatively short period of time for other gas chromatography sample processing techniques. At present, the headspace analysis method comprises five sample introduction modes, namely a manual mode, an airtight needle sample introduction mode, a balanced type pressurization system, a quantitative ring pressurization system and a static-dynamic compensation type.

Wherein the operation steps of the balanced pressurization system include: the sample reaches a thermal equilibrium state after being heated; introducing carrier gas through a conduit for pressurization; the sample is injected with carrier gas. When the sample gas contacts with the lower equipment inner wall of temperature in the heating process, condensation and liquefaction form water drops and attach to the equipment inner wall, if can not get effectual clearance, then can cause the influence to the detection of follow-up other samples.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a halohydrocarbon is with headspace sample injector in the detection ring border can effectively clear up the sample of liquefaction in the equipment after the use to the guarantee is to the detection effect of all the other samples.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a headspace sampler for detecting halogenated hydrocarbon in environment comprises a machine body, a detector is fixedly arranged on the top of the machine body, the detection end of the detector penetrates through the inner top of the machine body, a waterproof electric heater is fixedly arranged on the inner rear wall of the machine body, and the left side of the machine body is fixedly provided with a first air pump, the air outlet of the first air pump is connected and communicated with the left end of the first air duct, the first air duct penetrates through the inner left wall of the machine body and extends to the middle part of the inner cavity of the machine body, a second air pump is arranged below the first air pump, and the second air pump is fixedly arranged at the left side of the machine body, the air outlet of the second air pump is connected and communicated with the left end of the second air duct, the second air duct penetrates through the inner left wall of the machine body and extends to the middle part of the inner cavity of the machine body, a vacuum pump is fixedly arranged at the top part of the right side of the machine body, and the air inlet of the vacuum pump is communicated with the inner cavity of the machine body, and a cleaning mechanism is fixedly arranged on the inner bottom of the machine body.

Preferably, the cleaning mechanism comprises a cover plate, a water pump, a water guide pipe, transverse pipes, connecting hoses, spray heads, spray holes, connecting rods and a cylinder, the cover plate is fixedly connected to the inner bottom of the machine body, the water pump is fixedly installed in the middle of the inner bottom of the machine body, a water inlet of the water pump penetrates through the back of the machine body and is communicated with the outside of the machine body, a water outlet of the water pump is connected and communicated with the bottom end of the water guide pipe, the top end of the water guide pipe extends upwards in a sealing manner, the two transverse pipes are embedded in the top of the cover plate, the upper side and the lower side of each transverse pipe penetrate through the upper side and the lower side of the cover plate respectively, the upper end and the lower end of each connecting hose are connected and communicated with the bottom of each transverse pipe and the water guide pipe respectively, the spray heads are fixedly connected to the top, and the top ends of the two connecting rods are respectively hinged to the bottoms of the two transverse pipes, and one end, far away from the transverse pipes, of each connecting rod is fixedly connected with an output shaft of the corresponding air cylinder.

Preferably, the central axis of the transverse pipe is parallel to the top of the cover plate, and the central axis of the transverse pipe equally divides the perpendicular line between the top and the bottom of the cover plate.

Preferably, the nozzles are inclined towards one side close to the inner side wall of the machine body, and the two rows of nozzles are symmetrically arranged.

Preferably, the longitudinal section of the cover plate is isosceles trapezoid, and the cover plate is frustum-shaped.

Preferably, the outer department of following of bottom has seted up the drainage canal in the organism, and the right side of drainage canal is pegged graft and is had the left end of drain pipe, and the right-hand member of drain pipe runs through the bottom on organism right side, and the drain pipe lies in one of organism outside and serves fixed mounting to have the drain valve.

The utility model provides a headspace sample injector for halohydrocarbon in detection environment. The method has the following beneficial effects:

(1) this halohydrocarbon is with headspace sample injector in detecting environment, through the operation of clean mechanism, can effectively wash the organism inside behind the detection sample, ensure that no gas molecule or liquid molecule remain, simultaneously based on its mode of operation, can realize the effective clean effect to the organism internal top, and then avoided sample gas to rise in the heating process and the organism internal top contact condensation forms the remaining condition of water droplet and appears.

(2) The headspace sample injector for halohydrocarbon in the detection environment can obtain the stoving effect based on waterproof electric heater work in the organism after accomplishing the washing, and then fully ensures that no moisture remains in the organism, carries out abluent in-process to the organism in clean mechanism's operation simultaneously, and waste water can follow apron surface inflow in the drainage canal to finally pass through the drain pipe discharge organism with waste water through the mode of opening the drain valve, and then effectively ensured the inside clean degree of organism, improvement sample detection quality.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of a structure in fig. 1 according to the present invention.

In the figure: 1 organism, 2 detectors, 3 waterproof electric heaters, 4 first air pumps, 5 first air ducts, 6 second air pumps, 7 second air ducts, 8 vacuum pumps, 9 cleaning mechanisms, 91 cover plates, 92 water pumps, 93 aqueducts, 94 horizontal pipes, 95 connecting hoses, 96 spray heads, 97 spray holes, 98 connecting rods, 99 cylinders, 10 drainage channels, 11 drainage pipes and 12 drainage valves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a headspace sample injector for detecting halohydrocarbon in environment comprises a machine body 1, a detector 2 is fixedly arranged at the top of the machine body 1, a detection end of the detector 2 penetrates through the inner top of the machine body 1, a waterproof electric heater 3 is fixedly arranged on the inner rear wall of the machine body 1, a first air pump 4 is fixedly arranged at the left side of the machine body 1, an air outlet of the first air pump 4 is connected and communicated with the left end of a first air guide pipe 5, the first air guide pipe 5 penetrates through the inner left wall of the machine body 1 and extends to the middle of an inner cavity of the machine body 1, a second air pump 6 is arranged below the first air pump 4, the second air pump 6 is fixedly arranged at the left side of the machine body 1, an air outlet of the second air pump 6 is connected and communicated with the left end of a second air guide pipe 7, the second air guide pipe 7 penetrates through the inner left wall of the machine body 1 and extends to the middle of the inner cavity of, and the air inlet of the vacuum pump 8 is communicated with the inner cavity of the machine body 1, and the cleaning mechanism 9 is fixedly arranged on the inner bottom of the machine body 1.

The cleaning mechanism 9 comprises a cover plate 91, a water pump 92, a water guide pipe 93, a transverse pipe 94, a connecting hose 95, spray heads 96, spray holes 97, a connecting rod 98 and a cylinder 99, the cover plate 91 is fixedly connected to the inner bottom of the machine body 1, the water pump 92 is fixedly installed in the middle of the inner bottom of the machine body 1, a water inlet of the water pump 92 penetrates through the back of the machine body 1 and is communicated with the outside of the machine body, a water outlet of the water pump 92 is connected and communicated with the bottom end of the water guide pipe 93, the top end of the water guide pipe 93 extends upwards in a sealing manner, the number of the transverse pipes 94 is two, the two transverse pipes 94 are embedded in the top of the cover plate 91, the upper side and the lower side of the transverse pipe 94 respectively penetrate through the upper side and the lower side of the cover plate 91, the upper side and the lower side of the connecting hose 95 are respectively connected and communicated with the bottom of the transverse pipe 94, the quantity of connecting rod 98 is two, and the top of two connecting rod 98 articulates respectively in the bottom of two violently pipes 94, connecting rod 98 is kept away from the one end of violently pipe 94 and the output shaft fixed connection of cylinder 99, the axis of violently pipe 94 is parallel with the top of apron 91, and the axis of violently pipe 94 bisects the perpendicular line between apron 91 top and the bottom, shower nozzle 96 is the one side slope that the orientation closes on organism 1 inside wall, and two rows of shower nozzles 96 are the symmetry form setting, the longitudinal section of apron 91 is isosceles trapezoid, and the shape of apron 91 is the frustum form, the outer border department of bottom has seted up drain canal 10 in organism 1, and the right side of drain canal 10 is pegged graft there is the left end of drain pipe 11, the right-hand member of drain pipe 11 runs through the bottom on organism 1 right side, drain pipe 11 is.

When the device is used, sample gas is operated by the first air pump 4 and enters the machine body 1 through the first air duct 5, the waterproof electric heater 3 is operated to heat the gas to achieve a thermal balance state, carrier gas is operated by the second air pump 6 and enters the machine body 1 through the second air duct 7, the sample gas is carried to enter the detector 2 for detection, after the detection is finished, a water inlet of the water pump 92 is communicated with an external water source, water is discharged into the spray head 96 through the water guide pipe 93, the transverse pipe 94 and the connecting hose 95 by the operation of the water pump 92, the water is finally sprayed to the inner wall of the machine body 1 through the spray holes 97, the air cylinder 99 is operated and drives the connecting rod 98 to reciprocate at the same time, the transverse pipe 94 is driven to reciprocate in the cover plate 91, the spray head 96 swings to uniformly wash the top in the machine body 1, wastewater flows into the drainage channel 10 along the surface of the cover plate 91, and is discharged out of the, the interior of the machine body 1 is dried through the work of the waterproof electric heater 3, and the air in the machine body 1 is pumped completely through the operation of the vacuum pump 8 so as to be used for the next time.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A headspace sampler for detecting halogenated hydrocarbons in an environment, comprising a body (1), characterized in that: the top of the machine body (1) is fixedly provided with a detector (2), the detection end of the detector (2) penetrates through the inner top of the machine body (1), the inner rear wall of the machine body (1) is fixedly provided with a waterproof electric heater (3), the left side of the machine body (1) is fixedly provided with a first air pump (4), the air outlet of the first air pump (4) is connected and communicated with the left end of a first air duct (5), the first air duct (5) penetrates through the inner left wall of the machine body (1) and extends towards the middle part of the inner cavity of the machine body (1), a second air pump (6) is arranged below the first air pump (4), the second air pump (6) is fixedly arranged on the left side of the machine body (1), the air outlet of the second air pump (6) is connected and communicated with the left end of a second air duct (7), and the second air duct (7) penetrates through the inner left wall of the machine body (1) and extends to the middle part of the inner cavity, the top fixed mounting on organism (1) right side has vacuum pump (8), and the air inlet of vacuum pump (8) and the inner chamber intercommunication of organism (1), and fixed mounting has clean mechanism (9) on the interior bottom of organism (1).

2. The headspace sampler for detecting halogenated hydrocarbons in an environment of claim 1, wherein: the cleaning mechanism (9) comprises a cover plate (91), a water pump (92), a water guide pipe (93), a transverse pipe (94), a connecting hose (95), a spray head (96), spray holes (97), a connecting rod (98) and an air cylinder (99), wherein the cover plate (91) is fixedly connected to the inner bottom of the machine body (1), the water pump (92) is fixedly installed in the middle of the inner bottom of the machine body (1), water inlets of the water pump (92) penetrate through the back of the machine body (1) and are communicated with the outside of the machine body, a water outlet of the water pump (92) is connected and communicated with the bottom of the water guide pipe (93), the top end of the water guide pipe (93) extends upwards in a sealing manner, the number of the transverse pipes (94) is two, the two transverse pipes (94) are embedded in the top of the cover plate (91), the upper side and the lower side of each transverse pipe (94) penetrate through the upper side and the lower side of the cover plate (91), and the upper end and the lower, a plurality of shower nozzles (96) are row form equidistance fixed connection at the top of violently managing (94) and communicate rather than the inner chamber, and orifice (97) of intercommunication self inner chamber are seted up on the top of shower nozzle (96), and the quantity of connecting rod (98) is two, and the top of two connecting rod (98) articulates respectively in the bottom of two violently managing (94), and the one end of violently managing (94) is kept away from in connecting rod (98) and the output shaft fixed connection of cylinder (99).

3. The headspace sampler for detecting halogenated hydrocarbons in an environment of claim 2, wherein: the central axis of the transverse pipe (94) is parallel to the top of the cover plate (91), and the central axis of the transverse pipe (94) is equally divided into perpendicular lines between the top and the bottom of the cover plate (91).

4. The headspace sampler for detecting halogenated hydrocarbons in an environment of claim 2, wherein: the spray heads (96) are inclined towards one side close to the inner side wall of the machine body (1), and the two rows of spray heads (96) are symmetrically arranged.

5. The headspace sampler for detecting halogenated hydrocarbons in an environment of claim 2, wherein: the longitudinal section of the cover plate (91) is isosceles trapezoid, and the shape of the cover plate (91) is frustum-shaped.

6. The headspace sampler for detecting halogenated hydrocarbons in an environment of claim 1, wherein: the machine body (1) is characterized in that a drainage channel (10) is formed in the outer edge of the bottom in the machine body (1), the left end of a drainage pipe (11) is connected to the right side of the drainage channel (10) in an inserting mode, the right end of the drainage pipe (11) penetrates through the bottom of the right side of the machine body (1), and one end, located outside the machine body (1), of the drainage pipe (11) is fixedly provided with a drainage valve (12).