CN211122711U

CN211122711U - Flow cell

Info

Publication number: CN211122711U
Application number: CN201922116598.1U
Authority: CN
Inventors: 闾传明; 付正建; 付永恒
Original assignee: Wuxi Sanaer Instrument Equipment Manufacturing Co ltd
Current assignee: Wuxi Sanaer Instrument Equipment Manufacturing Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-28
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a flow-through cell relates to chemical analysis and detection technical field. Flow-through cell including the inlet, lead to light passageway, liquid outlet and casing, leads to light passageway and sets up in the casing, the inlet setting in one side of casing and with lead to light passageway's bottom and be connected, the liquid outlet corresponds the inlet setting at the opposite side of casing, the liquid outlet is connected with the top that leads to light passageway. Through the inlet with lead to the bottom of light passageway and be connected, the liquid outlet with lead to the setting that the light passageway top is connected, under the vertical condition of placing of light passageway, the flow direction is the zigzag, and sample entry and export all set up the crossing position of the sealed face that lies in lens, have avoided sample or mobile phase short time remaining phenomenon like this, have improved the precision of analysis.

Description

Flow cell

Technical Field

The utility model relates to a chemical analysis detects technical field, especially relates to the flow-through cell.

Background

Most of flow cells of liquid chromatograph detectors in the current market have high assembly requirements, most of pipeline connection methods adopt a welding mode, and the flow cells in the mode have poor maintainability; the sample inlet and the small hole of the light ray inlet are directly punched on the hole wall of the light through hole, the passing consistency of the sample is not perfect due to the design, the phenomenon that the sample or the mobile phase is temporarily remained at the position closest to the lens is easy to generate, and the bad results of baseline fluctuation and bad reproducibility are also caused seriously.

SUMMERY OF THE UTILITY MODEL

The technical scheme of the utility model provide a flow cell, can guarantee that the uniformity of sample temperature improves the analysis precision simultaneously. The specific technical scheme is as follows:

flow-through cell including the inlet, lead to light passageway, liquid outlet and casing, leads to the vertical placing of light passageway in the casing, the inlet setting is connected in one side of casing and with the bottom that leads to light passageway, and the liquid outlet corresponds the inlet setting at the opposite side of casing, and the liquid outlet is connected with the top that leads to light passageway.

Through the inlet with lead to the bottom of light passageway and be connected, the liquid outlet with lead to the setting that the light passageway top is connected, under the vertical condition of placing of light passageway, the flow direction is the zigzag, and sample entry and export all set up the crossing position of the sealed face that lies in lens, have avoided sample or mobile phase short time remaining phenomenon like this, have improved the precision of analysis.

Specifically, lead to the light passageway and be the toper and draw and establish in the casing, lead to the light passageway terminal surface and be circular, lead to the aperture of light passageway one end and be greater than the aperture of leading to the light passageway other end.

Through the setting of leading to the light passageway both ends equidimension not, avoided because reflection and the diffuse reflection phenomenon that the interior light nonparallel of leading to of logical light passageway that processing and assembly error brought to avoid the problem of the undulant grow of detection baseline, further promoted the stability and the precision of detection.

Specifically, the light-transmitting channel is provided with a first lens, a first fastening screw and a first fastening gasket at the top of the shell, and the first fastening screw and the first fastening gasket fix the first lens and the shell.

In particular, a first sealing film is provided between the first lens and the housing.

Through the setting of first seal membrane, avoided leading to the liquid in the light passageway and revealed away through the clearance between first lens and the casing, guaranteed the leakproofness of flow-through cell.

Specifically, the light passage is provided with a second lens, a second fastening screw and a second fastening gasket at the bottom of the shell, and the second fastening screw and the second fastening gasket fix the second lens and the lower part of the shell.

In particular, a second sealing film is provided between the second lens and the housing.

Through the setting of second seal membrane, avoided leading to the liquid in the light passageway and revealed away through the clearance between second lens and the casing, guaranteed the leakproofness of flow-through cell.

Specifically, the liquid inlet comprises a first mounting screw and a first sealing cone, and the pipeline is mounted on the shell through the first mounting screw and the first sealing cone in a detachable mode.

The specific liquid outlet comprises a second mounting screw and a second sealing cone, and the second mounting screw and the second sealing cone can detachably mount the pipeline on the shell.

Compared with the prior art, the utility model beneficial effect who has is: through the inlet with lead to the bottom of light passageway and be connected, the liquid outlet with lead to the setting that the light passageway top is connected, under the vertical condition of placing of light passageway, the flow direction is the zigzag, and sample entry and export all set up the crossing position of the sealed face that lies in lens, have avoided sample or mobile phase short time remaining phenomenon like this, have improved the precision of analysis.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the invention, in which:

FIG. 1 is a schematic view of a flow cell;

FIG. 2 is a partial view at A of FIG. 1;

fig. 3 is a partial view at B in fig. 1.

Reference numerals: 1 pipeline, 3 liquid inlets, 4 light passing channels, 5 liquid outlets, 6 shells, 7 first sealing films, 8 second sealing films, 13 first lenses, 14 first fastening screws, 15 first fastening gaskets, 16 second lenses, 17 second fastening screws, 18 second fastening gaskets, 19 first mounting screws, 20 first sealing cones, 21 second mounting screws and 22 second sealing cones

Detailed Description

In order to guarantee the precision and the stability of plunger pump flow, the technical scheme of the utility model provide a flow-through cell. The technical scheme is as follows:

the invention is explained in further detail below with reference to fig. 1.

As shown in fig. 1, the utility model provides a flow-through cell, including inlet 3, logical light passageway 4, liquid outlet 5 and casing 6, logical light passageway 4 is seted up in casing 6, and inlet 3 sets up in one side of casing 6 and is connected with the bottom that leads to light passageway 4, and liquid outlet 5 corresponds inlet 3 and sets up the opposite side at casing 6, and liquid outlet 5 is connected with the top that leads to light passageway 4.

Through inlet 3 with lead to the bottom of light passageway 4 and be connected, liquid outlet 5 with lead to the setting that light passageway 4 top is connected, under the vertical condition of placing of logical light passageway 4, the direction of flow is the zigzag, and sample entry and export all set up the crossing position of the sealed face that lies in lens, have avoided sample or mobile phase short-term remaining phenomenon like this, have improved the precision of analysis.

Specifically, lead to light passageway 4 and be the toper and set up in casing 6, lead to light passageway 4 terminal surface and be circular, lead to the area of light passageway 4 one end and be greater than the area of leading to the light passageway 4 other end.

Through leading to the setting of 4 both ends of light channel different sizes, avoided because processing and assembly error bring lead to in 4 reflection and the diffuse reflection phenomenon that light nonparallel leads to of light channel to make the problem of the undulant grow of detection baseline, further promoted the precision of detection.

Specifically, the light transmission channel 4 is provided with a first lens 13, a first fastening screw 14 and a first fastening gasket 15 on the top of the housing 6, and the first fastening screw 14 and the first fastening gasket 15 fix the first lens 13 and the housing 6 above each other.

In particular, a first sealing film 7 is provided between the first lens 13 and the housing 6.

Through the setting of first seal membrane 7, avoided leading to the liquid in the light passageway 4 and revealed away through the clearance between first lens 13 and the casing 6, guaranteed the leakproofness of flow-through cell.

Specifically, the light transmission channel 4 is provided with a second lens 16, a second fastening screw 17 and a second fastening gasket 18 at the bottom of the housing, and the second fastening screw 17 and the second fastening gasket 18 fix the second lens 16 and the lower part of the housing 6.

In particular, a second sealing film 8 is provided between the second lens 16 and the housing 6.

Through the setting of second seal membrane 8, avoided leading to the liquid in the light passageway 4 and revealed away through the clearance between second lens 16 and the casing 6, guaranteed the leakproofness of flow-through cell.

In actual production, the first sealing film 7 and the second sealing film 8 are made of PTFE materials, so that the corrosion resistance of the first sealing film 7 and the second sealing film 8 is improved.

Specifically, the liquid inlet 3 comprises a first mounting screw 19 and a first sealing cone 20, and the first mounting screw 19 and the first sealing cone 20 can detachably mount the pipeline 1 on the shell 6.

The specific liquid outlet comprises a second mounting screw 21 and a second sealing cone 22, and the pipeline 1 is detachably mounted on the shell 6 by the second mounting screw 21 and the second sealing cone 22.

In actual operation, the flow-through cell can adopt special black zirconia to carry out precision finishing, cooperates the PEEK pipeline to assemble, and such advantage lies in that the inertia is fabulous, has better performance and high stability to the application scene with strong corruption.

Of course, the flow cell can be precisely machined by 316 or 316L stainless steel, and the material can meet the use scene of a common liquid chromatograph, has the advantages of structural design and low cost.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. Flow-through cell, its characterized in that, including inlet (3), logical light passageway (4), liquid outlet (5) and casing (6), logical light passageway (4) is seted up in casing (6), inlet (3) set up one side of casing (6) and with the bottom of leading to light passageway (4) is connected, liquid outlet (5) correspond inlet (3) set up the opposite side of casing (6), liquid outlet (5) with the top of leading to light passageway (4) is connected.

2. A flow-through cell according to claim 1, wherein the light-passing channel (4) is arranged in the housing (6) in a conical shape, the end faces of the light-passing channel (4) are all circular, and the aperture of one end of the light-passing channel (4) is larger than that of the other end of the light-passing channel (4).

3. A flow cell according to claim 1, characterised in that the light through channel (4) is provided with a first lens (13), a first fastening screw (14) and a first fastening gasket (15) on top of the housing (6), the first fastening screw (14) and the first fastening gasket (15) fixing the first lens (13) and the housing (6) above.

4. A flow-through cell according to claim 3, characterised in that a first sealing membrane (7) is provided between the first lens (13) and the housing (6).

5. A flow cell according to claim 1, characterised in that the light through channel (4) is provided with a second lens (16), a second fastening screw (17) and a second fastening gasket (18) at the bottom of the housing (6), the second fastening screw (17) and the second fastening gasket (18) fixing the second lens (16) and the housing (6) below.

6. A flow-through cell according to claim 5, wherein a second sealing membrane (8) is provided between the second lens (16) and the housing (6).

7. A flow-through cell according to claim 1, characterised in that the liquid inlet (3) comprises a first mounting screw (19) and a first sealing cone (20), the first mounting screw (19) and the first sealing cone (20) detachably mounting the line (1) on the housing (6).

8. Flow cell according to claim 1, wherein the liquid outlet (5) comprises a second mounting screw (21) and a second sealing cone (22), the second mounting screw (21) and the second sealing cone (22) being detachable for mounting the line (1) on the housing (6).