Detection groove installation structure

Abstract

The utility model discloses a detection groove installation structure which comprises a detection chamber and a detection groove body, an installation window is arranged on a light shielding plate of the detection chamber, the detection groove body comprises a fixing plate, a connecting spacer block and a flow cell assembly which are connected in sequence, and the fixing plate is installed on the outer wall of the light shielding plate at the installation window. The flow cell assembly extends into the detection chamber from the mounting window, the flow cell assembly comprises a flow cell frame, a flow cell arranged in the flow cell frame and flow cell pressing heads fixedly arranged at the two ends of the flow cell and used for fixing the flow cell, and the flow cell frame is provided with a light inlet hole and a light outlet hole which are communicated with the light inlet window and the light outlet window respectively. An integrated window plug-in type installation structure is adopted, disassembly is not needed, and installation and replacement are convenient. By adopting the flow cell structure with the same size and structure, the replacement and use of the liquid phase column and the capillary flow cell can be met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the detection tank of fluorescent detection, specifically relates to a detection tank mounting structure. BACKGROUND

[0002] The fluorescence detector mainly is through light source (such as xenon lamp) and emits excitation light, and after the fluorescence of fluorescent substance is emitted after irradiating fluorescent substance, the fluorescence is changed into monochromatic fluorescence by monochromator, then is irradiated to sample. Photomultiplier tube amplifies and transmits the received photocurrent to recorder, to complete detection.

[0003] The existing fluorescence detector is universally configured liquid phase column detection tank, and is installed on the bottom plate in the body of fluorescence detector, and once needs to overhaul and replace, must open the body, and it is very inconvenient. In addition, the single liquid phase column detection tank can detect less kinds of substances, and if the capillary detection tank is used, the problems of inconvenient replacement and possibly different sizes and unable to install also exist. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to provide a detection tank mounting structure, and corresponding detection tank can be replaced conveniently and quickly to satisfy more kinds of substance detection.

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

[0006] A detection tank mounting structure, including detection chamber and detection tank body, the detection chamber is a light shielding chamber formed by several light shielding plates, the detection chamber has the light inlet window and light outlet window set on different light shielding plates, the detection chamber also has the installation window set on another light shielding plate, the detection tank body includes the fixed plate, the connecting partition block and the flow cell assembly connected in sequence, the fixed plate is installed on the outer wall of the light shielding plate at the installation window, the connecting partition block and the flow cell assembly are stretched into the detection chamber from the installation window, the flow cell assembly includes the flow cell frame, the flow cell arranged in the flow cell frame, the flow cell compression head fixedly arranged at both ends of the flow cell for fixing the flow cell, the flow cell frame has the light inlet hole and the light outlet hole communicated with the light inlet window and the light outlet window respectively.

[0007] The flow cell assembly also includes the flow cell inlet baffle and the flow cell pressing plate separately arranged on both sides of the flow cell frame, the flow cell inlet baffle is provided with the light transmission window communicated with the light inlet window and the light inlet hole, and the flow cell pressing plate is provided with the flow cell observation hole.

[0008] The flow cell is a liquid phase column flow cell, which comprises a square quartz glass tube arranged between two flow cell pressing heads, a flow cell inlet pipe arranged into the flow cell pressing head from the lower part to the lower end, and a flow cell outlet pipe arranged into the flow cell pressing head from the upper part to the upper end.

[0009] The flow cell is a capillary tube, and the upper and lower flow cell pressing heads are respectively provided with pipe joints, and a viewing window piece with a viewing window and communicating with the light inlet hole and the light outlet hole is arranged between the two flow cell pressing heads, the capillary tube passes through the two pressing heads and the viewing window piece through the two pipe joints, and the capillary tube has a transparent irradiated section and is located in the viewing window piece.

[0010] The light inlet hole and the light outlet hole are arranged at 90° with each other.

[0011] The flow cell frame is further connected with an outlet baffle on one side surface with the light outlet hole.

[0012] The light shielding plate with the mounting window is provided with a screw hole for connecting with the fixed plate and a positioning column matched with the positioning hole on the fixed plate.

[0013] The connecting partition block is provided with a screw hole connected with the fixed plate, and a weight-reducing through hole on the side surface.

[0014] The detection groove installation structure of the utility model adopts an integrated window insertion type installation structure, does not need to be disassembled, and is convenient to install and replace. Moreover, whether it is a liquid phase column or a capillary tube, the same size and structure of the flow cell structure are adopted, if it is needed to switch and replace the two, direct installation can ensure the position matching between the light inlet window, the flow cell and the light outlet window, and debugging is not needed. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be explained in detail in combination with the drawings and specific embodiments:

[0016] Figure 1 It is a schematic view of the detection groove installation structure of the utility model applied to a fluorescence detector;

[0017] Figure 2 It is a structural schematic view of the detection groove installation structure of the utility model;

[0018] Figure 3 It is a structural schematic view of the fixed plate of the utility model;

[0019] Figure 4 It is a structural schematic view of the installation window of the utility model;

[0020] Figure 5 This is a schematic diagram of the connecting partition and flow pool assembly of this utility model;

[0021] Figure 6 This is a schematic diagram of the flow cell assembly of this utility model;

[0022] Figure 7 This is a schematic diagram of the inlet and outlet light holes of the flow tank frame of this utility model;

[0023] Figure 8 This is a schematic diagram of the liquid phase column flow cell of this utility model;

[0024] Figure 9 This is a schematic diagram showing the connection between the flow tank clamping head and the inlet and outlet pipes of this utility model.

[0025] Figure 10 This is a schematic diagram of the capillary detection groove installation structure of this utility model;

[0026] Figure 11 This is a schematic diagram of the flow cell structure of the capillary tube of this utility model;

[0027] Figure 12 This is a schematic diagram of the structure of the outlet baffle of this utility model;

[0028] Figure 13 This is a schematic diagram of the connecting spacer of this utility model. Detailed Implementation

[0029] The present invention provides a detection slot installation structure as follows: Figure 1 As shown, it can be installed in a fluorescence detector. Fluorescence is emitted through the light source 1, reflected by the grating 2a and enters the detection cell 3. The fluorescence after irradiating the substance being tested is then reflected by the grating 2b to the photomultiplier tube 4.

[0030] Please combine Figures 2-9 As shown, the installation structure of the detection tank 3 specifically includes a detection chamber and a detection tank body. The detection chamber is a light-shielding chamber (including the sides and top) composed of several light-shielding plates 5. The detection chamber has light-entry windows 6, light-exit windows 7, and installation windows 8 opened on different light-shielding plates 5. The light-entry windows 6 and light-exit windows 7 are set at 90° to each other, and the installation window 8 is located in the opposite position to the light-exit windows 7.

[0031] The detection tank body includes a fixed plate 9, a connecting partition 10, and a flow cell assembly connected in sequence. The fixed plate 9 is larger than the mounting window 8 and is located on the outer wall of the light-shielding plate 5 at the mounting window 8. The connecting partition 10 and the flow cell assembly have a smaller cross-section than the mounting window 8 and can extend into the detection chamber through the mounting window 8. Figures 3-4As shown, the specific mounting mode of the fixing plate 9 can adopt setting screw holes 11 for connecting with the fixing plate 9 on the light shield plate 5 with the mounting window 8, and positioning columns 13 matched with the positioning holes 12 on the fixing plate 9, the screw holes 11 are respectively arranged on the upper and lower sides of the mounting window 8, the positioning columns 13 are respectively arranged on the left and right sides of the mounting window 8, the fixing plate 9 is firstly positioned through the positioning columns 13, and then fixed with the light shield plate 5 through the bolts penetrating into the screw holes 11.

[0032] The flow cell assembly mainly comprises a flow cell frame 14, a flow cell arranged in the flow cell frame 14, and flow cell compression heads 15 fixedly arranged at both ends of the flow cell for fixing the flow cell, the flow cell frame 14 can be made of plastic material, and the flow cell compression heads 15 are made of metal material and are inserted from the upper and lower ends of the flow cell frame 14. The flow cell frame 14 has a light inlet hole 16 and a light outlet hole 17 which are respectively communicated with the light inlet window 6 and the light outlet window 7, that is, the light inlet hole 16 and the light outlet hole 17 are also arranged at 90° with each other. The flow cell assembly further comprises a flow cell inlet baffle 18 and a flow cell pressing plate 19 which are respectively arranged on both sides of the flow cell frame 14, the flow cell inlet baffle 18 is provided with a light transmission window 20 communicated with the light inlet window 6 and the light inlet hole 16, and the flow cell pressing plate 19 is provided with a flow cell observation hole 21.

[0033] When the liquid phase column detection groove 3 is selected, the flow cell is a liquid phase column flow cell, which comprises a square quartz glass tube 22 arranged between the two flow cell compression heads 15, a flow cell inlet pipe 23 penetrating into the lower end of the flow cell compression head 15 from the lower part, and a flow cell outlet pipe 24 penetrating into the upper end of the flow cell compression head 15 from the upper part. The flow cell compression heads 15 at the upper and lower ends are further provided with gaskets 25 between the flow cell compression heads 15 and the square quartz glass tube 22, and the flow cell compression heads 15 and the gaskets 25 are both provided with flow holes 26 communicated with the square quartz glass tube 22, and the flow cell inlet and outlet pipes 23 and 24 are metal hard pipes and are respectively fixed with the corresponding flow cell compression heads 15. The other ends of the flow cell inlet and outlet pipes 23 and 24 can pass through the groove holes 28 formed on the connecting partition 10 and penetrate out of the fixing plate 9 through the mounting window 8.

[0034] As shown in the drawings, Figures 10-11When the capillary detection groove 3 is selected, compared with the liquid phase column detection groove 3, the difference is only that the flow cell is a capillary 27, the pipe joint 29 is arranged on the upper and lower flow cell pressing heads 15 respectively, and the observation window piece 30 with the observation window and communicated with the light inlet hole 16 and the light outlet hole 17 is arranged between the two flow cell pressing heads 15, and the observation window piece 30 is penetrated from top to bottom with the upper and lower flow cell pressing heads 15 and the corresponding pipe joints 29. One capillary 27 is penetrated from the two pipe joints 29, the two flow cell pressing heads 29 and the observation window piece 30 after being sleeved with the protective sleeve 32 of PEEK material, and the irradiated section of the capillary 27 in the observation window piece 30 is transparent and not sleeved with the protective sleeve 32, and is used for fluorescent irradiation of the measured object in the pipe. The irradiated section can be made in the form of sintered capillary 27. By arranging the protective sleeve 32, the pipe joint 29 can be screwed to fix the capillary 27 sleeved with the protective sleeve 32. The observation window is communicated with the flow cell observation hole 21 on the flow cell pressing plate 19.

[0035] As shown in Figure 12 The flow cell frame 14 is further connected with the outlet baffle 31 on one side of the light outlet hole 17, the outlet baffle 31 is similar to a U-shaped structure, and is connected with the flow cell frame 14 by penetrating the screw hole 11 with a bolt, and the two sides of the fluorescent light from the light outlet hole 17 are shielded.

[0036] As shown in Figure 13 One end surface of the connecting partition block 10 is also provided with the screw hole 11 connected with the fixed plate 9, and the side surface is provided with the weight-reducing through hole 32. The slot hole 28 is arranged on one side surface of the connecting partition block 10 and is pressed by the pressing plate 33.

[0037] In summary, the detection groove 3 installation structure of the utility model has the advantages that since the whole detection groove 3 is an integral structure, when the detection groove 3 needs to be installed or replaced, the replacement can be completed only by disassembling and assembling the installation window 8 and the fixed plate 9, meanwhile, the liquid phase column and the capillary 27 detection groove 3 adopt the same size and structure, and no debugging is needed when the replacement is performed, the position matching between the light inlet window 6, the flow cell and the light outlet window 7 can be ensured, and the range of the detected substances is also expanded.

[0038] However, those skilled in the art should understand that the above embodiments are only used to illustrate the utility model, and are not used as the limitation of the utility model, as long as the changes and modifications of the above described embodiments are within the essential spirit of the utility model, the changes and modifications of the above described embodiments will fall within the scope of the claims of the utility model.

Claims

1. A detection slot installation structure, comprising a detection chamber and a detection slot body, the detection chamber being a light shielding chamber formed by a plurality of light shielding plates, the detection chamber having a light inlet window and a light outlet window formed on different light shielding plates, characterized in that: The detection chamber also has an installation window opened on another light shielding plate, the detection groove body comprises a fixed plate, a connecting partition block and a flow cell assembly connected in sequence, the fixed plate is installed on the outer wall of the light shielding plate at the installation window, the connecting partition block and the flow cell assembly extend into the detection chamber from the installation window, the flow cell assembly comprises a flow cell frame, a flow cell arranged in the flow cell frame and flow cell pressing heads fixed at both ends of the flow cell for fixing the flow cell, the flow cell frame has a light inlet hole and a light outlet hole which are communicated with the light inlet window and the light outlet window respectively.

2. The detection groove mounting structure according to claim 1, characterized by: The flow cell assembly further comprises a flow cell inlet baffle and a flow cell pressing plate which are arranged on both sides of the flow cell frame, the flow cell inlet baffle is provided with a light transmission window communicated with the light inlet window and the light inlet hole, and the flow cell pressing plate is provided with a flow cell observation hole.

3. The detection groove mounting structure according to claim 1 or 2, characterized by: The flow cell is a liquid phase column flow cell which comprises a square quartz glass tube arranged between the two flow cell pressing heads, a flow cell inlet pipe which extends into the flow cell pressing head at the lower end from the lower part, and a flow cell outlet pipe which extends into the flow cell pressing head at the upper end from the upper part, and a gasket is arranged between the flow cell pressing heads at the upper and lower ends and the square quartz glass tube, and flow holes communicated with the square quartz glass tube are arranged on the flow cell pressing heads and the gasket, and the flow cell inlet and outlet pipes extend out of the fixed plate from the installation window.

4. The detection groove mounting structure according to claim 1 or 2, characterized by: The flow cell is a capillary tube, and pipe joints are arranged on the flow cell pressing heads at the upper and lower ends respectively, and an observation window piece which has an observation window and is communicated with the light inlet hole and the light outlet hole is arranged between the two flow cell pressing heads, the capillary tube passes through the two pressing heads and the observation window piece through the two pipe joints, and the capillary tube has a transparent irradiated segment which is located in the observation window piece.

5. The detection groove mounting structure according to claim 1 or 2, characterized by: A protective sleeve is arranged in the pressing head and the pipe joint, and the capillary tube passes in and out through the protective sleeve.

6. The detection groove mounting structure according to claim 1, characterized by: The light inlet hole and the light outlet hole are arranged at 90° to each other.

7. The detection groove mounting structure according to claim 1, characterized by: An outlet baffle is further connected to the side surface of the flow cell frame which has the light outlet hole.

8. The detection groove mounting structure according to claim 1, characterized by: The light shielding plate with the installation window has screw holes for connecting with the fixed plate and positioning columns matched with the positioning holes on the fixed plate.

9. The detection groove mounting structure according to claim 1, characterized by: The connecting partition block has screw holes connected with the fixed plate and weight-reducing through holes on the side surface.

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