Capillary tube detection groove

Abstract

The utility model discloses a capillary tube detection groove which comprises a flow cell assembly, the flow cell assembly comprises a flow cell frame, a pressing head and a capillary tube, an observation window piece with an observation window, a light inlet hole and a light outlet hole are arranged in the flow cell frame, and the light inlet hole and the light outlet hole are respectively arranged on the side portion of the observation window piece and communicated with the observation window piece. The pressing heads are fixedly arranged at the upper end and the lower end of the flow cell frame respectively and vertically penetrate through the observation window piece, pipe joints are arranged on the two pressing heads, the capillary tube penetrates through the two pressing heads and the observation window piece through the two pipe joints, and the capillary tube is provided with a transparent irradiated section and is located in the observation window piece. Fluorescent light irradiates the transparent irradiated section of the capillary tube arranged in the flow cell frame, so that the capillary tube detection groove can be used for detecting nanoliter (nl) micro-samples.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fluorescent detector, concretely relates to a capillary detection groove. BACKGROUND

[0002] The fluorescent detector mainly is through light source (such as xenon lamp) and emits excitation light, and after irradiating fluorescent substance, the fluorescence of fluorescent substance is changed into monochromatic fluorescence through monochromator, then is irradiated to sample.Photomultiplier tube will amplify and transmit received photoelectric current to recording instrument, to complete detection.

[0003] The existing fluorescent detector is generally configured as liquid phase column detection groove, and the sample quantity used is microliter (ul), and the micro sample of nanoliter (nl) cannot be applied. UTILITY MODEL CONTENT

[0004] The utility model provides a capillary detection groove, adopts capillary detection pool, and can satisfy the detection of nanoliter micro sample.

[0005] In order to solve the above technical problem, the utility model adopts the following technical scheme:

[0006] A capillary detection groove, including flow cell assembly, the flow cell assembly includes flow cell frame, compression head and capillary, the flow cell frame is equipped with observation window piece with observation window, and the inlet and outlet light holes are arranged on the side of observation window piece and communicated with observation window piece, the compression head is fixed on the upper and lower ends of flow cell frame respectively and is communicated with observation window piece, the pipe joint is arranged on the two compression heads, the capillary passes through the two compression heads and observation window piece through the two pipe joints, and the capillary has transparent irradiated section and is located in observation window piece.

[0007] The flow cell assembly still includes flow cell inlet baffle and flow cell pressing plate arranged on the two sides of flow cell frame.

[0008] One side end of the flow cell frame is also provided with a connecting partition block, and the connecting partition block is also connected with a fixing plate on one side end.

[0009] The side end of the flow cell frame with the outlet light hole is also connected with an outlet baffle.

[0010] The inlet light hole and the outlet light hole are arranged at 90 degrees.

[0011] The compression head and the pipe joint are also provided with a protective sleeve, and the capillary passes in and out through the protective sleeve.

[0012] The connecting partition block has a screw hole connected with the fixing plate, and the side surface has a weight-reducing through hole.

[0013] This invention discloses a capillary detection cell, whose flow cell assembly comprises a capillary tube and components such as a flow cell frame, clamping head, and pipe connector for fixing the capillary tube. Fluorescent illumination is applied to the transparent irradiated section of the capillary tube within the flow cell frame, enabling the capillary detection cell to detect trace samples as small as nanoliters (nL). A protective sleeve facilitates the fixing of the capillary tube by the pipe connector. Furthermore, the entire detection cell is designed as a single unit, facilitating installation and replacement. Attached Figure Description

[0014] The utility model will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0015] Figure 1 This is a three-dimensional schematic diagram of the capillary detection groove of this utility model;

[0016] Figure 2 for Figure 1 Rear view diagram;

[0017] Figure 3 This is a three-dimensional schematic diagram of the flow tank frame of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the clamping head and observation window of this utility model;

[0019] Figure 5 This is a schematic diagram of the capillary tube installation structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the installation of the capillary detection groove of this utility model. Detailed Implementation

[0021] This utility model provides a capillary detection groove, such as... Figures 1-5As shown, the flow cell assembly 1 mainly comprises a flow cell frame 11, pressing heads 12 and a capillary 13. The flow cell frame 11 can be made of plastic material, and is internally provided with an observation window piece 14 having an observation window, and inlet and outlet light holes 15, 16 respectively arranged on the side of the observation window piece 14 and communicating with the observation window piece 14. The inlet light hole 15 and the outlet light hole 16 are arranged at 90° with each other. The pressing heads 12 can be made of metal material, and are respectively fixed on the upper and lower ends of the flow cell frame 11, and the interiors of the pressing heads 12 are in communication with the observation window piece 14. The two pressing heads 12 are respectively provided with pipe joints 17, the capillary 13 passes through the two pressing heads 12 and the observation window piece 14 through the two pipe joints 17, and the capillary 13 has a transparent irradiated section 131 located in the observation window piece 14. Specifically, the coating of the section of the capillary 13 can be removed by sintering or the like, so that the fluorescence can effectively irradiate the measured sample in the section. The pressing heads 12 and the pipe joints 17 are further provided with protective sleeves 18 made of PEEK material (the irradiated section is not provided with the protective sleeve 18), the capillary 13 passes in and out through the protective sleeves 18, and the pipe joints 17 can be tightly fixed to the capillary 13 provided with the protective sleeves 18.

[0022] The flow cell assembly further comprises a flow cell inlet baffle 112 and a flow cell pressing plate 111 respectively arranged on the two sides of the flow cell frame 11 and fixed with the flow cell frame 11. The flow cell inlet baffle 112 is provided with a light transmission window 113 in communication with the inlet light hole 15. The flow cell pressing plate 111 has a notch exposing the observation window piece 14.

[0023] One side end of the flow cell frame 11 is further provided with a connecting partition 19, and one side end of the connecting partition 19 is further connected with a fixing plate 191. The connecting partition 19 has screw holes 192 connected with the fixing plate 191, and a weight-reducing through hole 193 on the side surface. The fixing plate 191 is provided with corresponding positioning holes 194 and fixing screw holes 195. The flow cell frame 11 is further connected with an outlet baffle 196 on the side end having the outlet light hole 16.

[0024] In combination Figure 6 As shown, when the capillary 13 flow cell is applied to a fluorescence detector, an installation window can be formed on the outer side wall of a detection cell chamber 2 of the fluorescence detector, the connecting partition 19, the flow cell assembly 1 and the outlet baffle 196 are inserted into the detection cell chamber 2 through the installation window, and the fixing plate 191 left outside the installation window is fixed on the outer side wall of the detection cell chamber 2 through the positioning column 3 and the bolt.

[0025] In use, after the fluorescence emitted by the light source is irradiated on the irradiated section of the capillary 13 through the light transmission window 113 and the inlet light hole 15, it is emitted to the subsequent photomultiplier tube through the outlet light hole 16 to obtain a detection signal.

[0026] However, those skilled in the technical field should realize that the above embodiments are only used to illustrate the utility model, and are not used as a limitation on the utility model, and as long as the changes and variations of the above described embodiments are within the scope of the utility model, they will fall within the scope of the utility model claims.

Claims

1. A capillary detection cell, comprising a flow cell assembly, characterized in that: The flow cell assembly includes a flow cell frame, clamping heads, and capillary tubes. The flow cell frame is provided with an observation window and light inlet and outlet holes located on the side of the observation window and communicating with it. The clamping heads are fixed on the upper and lower ends of the flow cell frame and communicate vertically with the observation window. Both clamping heads are provided with pipe joints. The capillary tube passes through the two clamping heads and the observation window through the two pipe joints, and the capillary tube has a transparent irradiated section located inside the observation window.

2. The capillary detection groove according to claim 1, characterized in that: The flow cell assembly also includes a flow cell inlet baffle and a flow cell pressure plate disposed on both sides of the flow cell frame.

3. The capillary detection groove according to claim 1, characterized in that: The flow pool frame is also provided with a connecting partition on one side, and a fixing plate is also connected to one side of the connecting partition.

4. The capillary detection groove according to claim 1, characterized in that: An outlet baffle is also connected to one end of the flow cell frame that has a light outlet hole.

5. The capillary detection groove according to claim 1, characterized in that: The light inlet and light outlet are set at 90° to each other.

6. The capillary detection groove according to claim 1, characterized in that: The clamping head and its pipe joint are also equipped with a protective sleeve, through which the capillary tube passes in and out.

7. The capillary detection groove according to claim 1, characterized in that: The connecting block has screw holes that connect to the fixing plate, and weight-reducing through holes on the side.

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