Sample cell constant temperature preheating spectrum acquisition system

Abstract

The constant-temperature preheating spectrum acquisition system comprises a bottom plate, and a collimator moving assembly, a sample cell assembly, a light source, a spectrograph, a temperature control meter and a relay are mounted on the bottom plate; the collimator moving assembly comprises a linear sliding rail, a horizontal connecting plate and a U-shaped supporting plate are fixed to a sliding block of the linear sliding rail, a first vertical plate is fixedly arranged on one side plate of the U-shaped supporting plate, a second vertical plate is fixedly arranged on the other side plate of the U-shaped supporting plate, a first collimator is installed on the first vertical plate, a second collimator is installed on the second vertical plate, and the horizontal connecting plate and the U-shaped supporting plate are fixed to the linear sliding rail. An optocoupler is mounted on a middle plate of the U-shaped supporting plate; the sample pool assembly comprises a heat insulation cushion block and a liquid sample pool, the liquid sample pool is provided with a reference light hole and a plurality of sample detection light holes, each sample detection light hole is provided with an optical path adjusting sheet and a sample dish, and the liquid sample pool is provided with an optocoupler slice, a temperature sensor and a heating resistor. The utilization rate of the spectrograph and the light source is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical detection, in particular to a sample pool constant temperature preheating spectrum acquisition system. Background Art

[0002] Spectral analysis technology has the technical advantages of being non-destructive, rapid, capable of detecting multiple indicators simultaneously, and being green and environmentally friendly. It is very suitable for the component analysis of industrial products and for the detection of various sample states such as solids, liquids, gases, suspensions, pastes, etc.

[0003] In industrial production, the control of product temperature directly affects the quality of the product, especially liquid, suspended, and paste samples, which present different sample morphologies and physicochemical properties at different temperatures, and their spectral absorption characteristics will also change accordingly. Therefore, in order to obtain stable and high-quality sample spectra, it is necessary to provide precise temperature control measures for certain samples.

[0004] In industrial process analysis, it is often necessary to quickly measure multiple samples from multiple product lines at the same time. One location corresponds to a spectrometer and light source detection solution, and the instrument use and maintenance costs are high. Utility Model Content

[0005] The utility model aims to solve the deficiencies of the prior art and provides a sample pool constant temperature preheating spectrum acquisition system.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A sample pool constant temperature preheating spectrum acquisition system comprises a base plate, on which a collimator moving assembly, a sample pool assembly, a light source, a spectrometer, a temperature control meter and a relay are mounted;

[0008] The collimator moving assembly includes a linear slide fixed on the upper surface of the bottom plate, the linear slide is connected to a driving motor, a horizontal connecting plate is fixedly installed on the slider of the linear slide, a horizontally arranged U-shaped support plate is arranged on one side of the horizontal connecting plate, a first vertical plate is fixedly arranged on one side plate of the U-shaped support plate, and a second vertical plate is fixedly arranged on the other side plate, a first collimator is installed on the first vertical plate, a second collimator is installed on the second vertical plate, the first collimator and the second collimator are arranged correspondingly, and an optical coupler is installed on the middle plate of the U-shaped support plate;

[0009] The sample pool assembly includes a heat-insulating pad fixed on the upper surface of the bottom plate, a liquid sample pool is installed on the heat-insulating pad, the liquid sample pool is located between the first upright plate and the second upright plate, a reference light hole and a plurality of sample detection light holes are opened on the liquid sample pool, the central axes of the reference light hole and the sample detection light hole are arranged at the same height as the central axes of the first collimator and the second collimator, an optical path adjustment sheet and a sample dish are installed in the liquid sample pool corresponding to each sample detection light hole, an optical coupler slice and a temperature sensor are installed on the side of the liquid sample pool facing the optical coupler, and a plurality of heating resistors are installed on the side of the liquid sample pool;

[0010] The first collimator is connected to the light source through the input optical fiber, the second collimator is connected to the spectrometer through the output optical fiber, the temperature sensor is connected to the temperature control meter through the wire, the temperature control meter is connected to the relay through the wire, and the relay is connected to the heating resistor through the wire.

[0011] The utility model also comprises a driver fixed on the upper surface of the bottom plate, and the driver is connected with the driving motor through a wire.

[0012] The optical coupler is a side-mounted U-shaped structure, and both side walls of the optical coupler are provided with fixed ear plates, which are fixed to the U-shaped support plate by bolts.

[0013] The optical coupling slice is a T-shaped structure. The bottom plate of the optical coupling slice is fixed to the side wall of the second module by bolts. The height of the side plate of the optical coupling slice corresponds to the inside of the U-shaped groove of the optical coupling.

[0014] The beneficial effects of the utility model are as follows: the utility model is designed with a constant temperature preheating function, which can effectively solve the precise temperature control of samples that are sensitive to temperature changes. At the same time, multiple sample pools can be preheated at the same time, effectively reducing the time spent on temperature control of sample detection; by sharing a set of spectrometers and light sources, the need for automatic detection of multiple liquid samples in sequence can be quickly realized, and the reference spectrum can be calibrated in real time. While ensuring the measurement needs, the utilization rate of the spectrometer and the light source is effectively improved, the production and use costs are greatly reduced, and the utility model has a wide range of promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 is a schematic diagram of the structure of the collimator moving assembly;

[0017] Figure 3 It is a structural schematic diagram of the sample pool assembly;

[0018] Figure 4 It is a structural schematic diagram of a liquid sample pool;

[0019] Figure 5 is a structural schematic diagram of the first module;

[0020] Figure 6 is a structural schematic diagram of the second module;

[0021] In the figure: 1-base plate; 2-collimator moving assembly; 3-sample pool assembly; 4-light source; 5-spectrometer; 6-temperature control meter; 7-relay; 8-input optical fiber; 9-output optical fiber; 10-driver;

[0022] 21-linear slide rail; 22-driving motor; 23-sliding block; 24-horizontal connecting plate; 25-U-shaped supporting plate; 26-first vertical plate; 27-second vertical plate; 28-first collimator; 29-second collimator; 210-optical coupler; 211-fixed ear plate;

[0023] 31-insulation pad; 32-liquid sample pool; 33-reference light hole; 34-sample detection light hole; 35-optical path adjustment plate; 36-sample dish; 37-optical coupling slice; 38-temperature sensor; 39-heating resistor;

[0024] 321-first module; 322-second module;

[0025] 3211-sample dish mounting slot;

[0026] 3221-optical path adjustment piece installation slot;

[0027] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0029] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0032] A sample pool constant temperature preheating spectrum acquisition system, such as Figure 1 As shown, it includes a base plate 1, on which a collimator moving component 2, a sample pool component 3, a light source 4, a spectrometer 5, a temperature control meter 6 and a relay 7, an input optical fiber 8, an output optical fiber 9 and a driver 10 are installed.

[0033] Collimator moving assembly 2 Figure 2 As shown, it includes a linear slide 21 fixed on the upper surface of the base plate 1, the linear slide 21 is connected to a driving motor 22, a horizontal connecting plate 24 is fixedly installed on the slider 23 of the linear slide 21, a horizontally arranged U-shaped support plate 25 is provided on one side of the horizontal connecting plate 24, a first vertical plate 26 is fixedly provided on one side plate of the U-shaped support plate 25 and a second vertical plate 27 is fixedly provided on the other side plate, a first collimator 28 is installed on the first vertical plate 26, a second collimator 29 is installed on the second vertical plate 27, the first collimator 28 and the second collimator 29 are correspondingly arranged, and an optical coupler 210 is installed on the middle plate of the U-shaped support plate 25; the optical coupler 210 is a side-mounted U-shaped structure, and the two side walls of the optical coupler 210 are provided with fixed ear plates 211, and the fixed ear plates 211 are fixed to the U-shaped support plate 25 by bolts.

[0034] The linear guide rail 21 includes a U-shaped seat, a lead screw is installed between two side plates of the U-shaped seat, the lead screw is connected to the drive motor 22, and the slider 23 is screwed onto the lead screw through threads.

[0035] The horizontal connecting plate 24 is mounted on the upper surface of the slider 23 by means of bolts.

[0036] Sample pool component 3 Figure 3As shown, it includes a heat-insulating pad 31 fixed on the upper surface of the base plate 1, and a liquid sample pool 32 is installed on the heat-insulating pad 31. The liquid sample pool 32 is located between the first vertical plate 26 and the second vertical plate 27. A reference light hole 33 and a plurality of sample detection light holes 34 are opened on the liquid sample pool 32. The central axes of the reference light hole 33 and the sample detection light hole 34 are arranged at the same height as the central axes of the first collimator 28 and the second collimator 29. An optical path adjustment plate 35 and a sample dish 36 are installed in the liquid sample pool 32 corresponding to each sample detection light hole 34. An optical coupler slice 37 and a temperature sensor 38 are installed on the side of the liquid sample pool 32 facing the optical coupler 210, and a plurality of heating resistors 39 are installed on the side of the liquid sample pool 32.

[0037] The optical coupling slice 37 is a T-shaped structure. The bottom plate of the optical coupling slice 37 is fixed to the side wall of the second module 322 by bolts. The height of the side plate of the optical coupling slice 37 corresponds to the inside of the U-shaped groove of the optical coupler 210 .

[0038] The first collimator 28 is connected to the light source 4 through the input optical fiber 8, the second collimator 29 is connected to the spectrometer 5 through the output optical fiber 9, the temperature sensor 38 is connected to the temperature control meter 6 through a wire, the temperature control meter 6 is connected to the relay 7 through a wire, and the relay 7 is connected to the heating resistor 39 through a wire.

[0039] The driver 10 is fixed on the upper surface of the base plate 1 , and the driver 10 is connected to the driving motor 22 via a wire.

[0040] The light source 4 is an independently packaged collimated light source. A standard optical fiber connector is provided at the output end of the light source 4, which is connected to the input optical fiber 8 through the optical fiber connector to transmit the light emitted by the light source 4 to the liquid sample pool 32 to irradiate the sample.

[0041] The collimator moving assembly 2 is controlled by a precisely controlled drive motor 22 to control the linear slide 21. The driver 10 sends a drive signal to the drive motor 22 to control the slider 23 on the linear slide 21 to move to the corresponding working position, and then the first vertical plate 26 and the second vertical plate 27 on the U-shaped support plate 25 can be controlled to move into place. The first vertical plate 26 is equipped with a first collimator 28, and the second vertical plate 27 is equipped with a second collimator 29. The first collimator 28 is connected to the light source 4, and the second collimator 29 is connected to the spectrometer 5, which is used to realize optical path coupling with different sample pool channels for signal transmission.

[0042] The driving motor 22 controls the movement of the slider 23 on the linear guide rail 21 by a screw drive.

[0043] An optical coupler slice 37 is provided on the sample cell assembly 3 and cooperates with the optical coupler 210 fixed on the U-shaped support plate 25 to determine the zero position.

[0044] The sample pool assembly 3 is provided with a reference light hole 33 and a plurality of sample detection light holes 34, wherein the number of the sample detection light holes 34 can be selected as required. Figure 3 As shown, there are six sample detection light holes 34, which can realize simultaneous detection of six samples at most. The reference light hole 33 is used for timed calibration of the reference spectrum, with air as the reference.

[0045] A heating resistor 39 and a temperature sensor 38 are provided on the liquid sample pool 32 for heating the liquid sample pool 32 and feeding back the real-time temperature signal of the liquid sample pool 32 to the temperature control meter 6. The temperature control meter 6 then controls the operation of the heating resistor 39 through the relay 7 to maintain constant temperature control of the sample in the liquid sample pool 32.

[0046] Sample dishes 36 and optical path adjustment plates 35 with different optical paths can be placed in the cavity of the liquid sample pool 32, and the appropriate sample dishes 36 and optical path adjustment plates 35 are selected according to the actual sample characteristics.

[0047] Liquid sample pool 32 such as Figure 4 As shown, it includes a first module 321 and a second module 322 which are installed in combination.

[0048] The first module 321 is as follows Figure 5 As shown, a plurality of sample dish installation slots 3211 are provided on the side facing the second module 322, the top of the sample dish installation slot 3211 is connected with the top of the first module 321, the sample dish 36 is inserted into the sample dish installation slot 3211, and the sample detection light hole 34 is provided corresponding to each sample dish installation slot 3211;

[0049] The second module 322 is as follows Figure 6 As shown, a plurality of optical path adjustment sheet mounting grooves 3221 are provided on the side facing the first module 321 , the top of the optical path adjustment sheet mounting groove 3221 is connected with the top of the second module 322 , the optical path adjustment sheet 35 is inserted into the optical path adjustment sheet mounting groove 3221 , and the sample detection light hole 34 is arranged corresponding to each optical path adjustment sheet mounting groove 3221 .

[0050] The heating resistor 39 is fixed on the outer wall of the first module 321 .

[0051] The temperature sensor 38 is fixed on the side wall of the first module.

[0052] The utility model is designed with a constant temperature preheating function, which can effectively solve the precise temperature control of samples that are sensitive to temperature changes. At the same time, multiple sample pools can be preheated at the same time, effectively reducing the time spent on temperature control of sample detection; by sharing a set of spectrometers 5 and light sources 4, the need for automatic detection of multiple liquid samples in sequence can be quickly realized, and the reference spectrum can be calibrated in real time. While ensuring the measurement needs, the utilization rate of the spectrometer 5 and the light source 4 is effectively improved, the production and use costs are greatly reduced, and the utility model has a wide range of promotion and application value.

[0053] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A sample pool constant temperature preheating spectrum acquisition system, characterized in that: The device comprises a base plate (1), on which a collimator moving assembly (2), a sample pool assembly (3), a light source (4), a spectrometer (5), a temperature control meter (6) and a relay (7) are mounted; The collimator moving assembly (2) comprises a linear slide rail (21) fixed on the upper surface of the base plate (1), the linear slide rail (21) being connected to a driving motor (22), a horizontal connecting plate (24) being fixedly mounted on a slider (23) of the linear slide rail (21), a horizontally arranged U-shaped support plate (25) being arranged on one side of the horizontal connecting plate (24), a first vertical plate (26) being fixedly mounted on one side plate of the U-shaped support plate (25) and a second vertical plate (27) being fixedly mounted on the other side plate, a first collimator (28) being mounted on the first vertical plate (26), a second collimator (29) being mounted on the second vertical plate (27), the first collimator (28) and the second collimator (29) being arranged correspondingly, and an optical coupler (210) being mounted on the middle plate of the U-shaped support plate (25); The sample pool assembly (3) comprises a heat-insulating pad (31) fixed on the upper surface of the bottom plate (1), a liquid sample pool (32) being installed on the heat-insulating pad (31), the liquid sample pool (32) being located between the first upright plate (26) and the second upright plate (27), a reference light hole (33) and a plurality of sample detection light holes (34) being provided on the liquid sample pool (32), the central axes of the reference light hole (33) and the sample detection light hole (34) being arranged at the same height as the central axes of the first collimator (28) and the second collimator (29), an optical path adjustment sheet (35) and a sample dish (36) being installed in the liquid sample pool (32) corresponding to each sample detection light hole (34), an optical coupler slice (37) and a temperature sensor (38) being installed on the side of the liquid sample pool (32) facing the optical coupler (210), and a plurality of heating resistors (39) being installed on the side of the liquid sample pool (32); The first collimator (28) is connected to the light source (4) via an input optical fiber (8), the second collimator (29) is connected to the spectrometer (5) via an output optical fiber (9), the temperature sensor (38) is connected to the temperature control meter (6) via a wire, the temperature control meter (6) is connected to the relay (7) via a wire, and the relay (7) is connected to the heating resistor (39) via a wire.

2. A sample pool constant temperature preheating spectrum acquisition system according to claim 1, characterized in that: It also includes a driver (10) fixed on the upper surface of the base plate (1), and the driver (10) is connected to the driving motor (22) via a wire.

3. A sample pool constant temperature preheating spectrum acquisition system according to claim 2, characterized in that: The optical coupler (210) is a side-mounted U-shaped structure. Two side walls of the optical coupler (210) are provided with fixed ear plates (211), and the fixed ear plates (211) are fixed to the U-shaped support plate (25) by means of bolts.

4. A sample pool constant temperature preheating spectrum acquisition system according to claim 3, characterized in that: The liquid sample pool (32) comprises a first module (321) and a second module (322) which are installed in combination; A plurality of sample dish installation grooves (3211) are provided on one side of the first module (321) facing the second module (322); the top of the sample dish installation groove (3211) is connected to the top of the first module (321); the sample dish (36) is inserted into the sample dish installation groove (3211); and a sample detection light hole (34) is provided corresponding to each sample dish installation groove (3211); A plurality of optical path adjustment sheet installation grooves (3221) are provided on a side of the second module (322) facing the first module (321); the top of the optical path adjustment sheet installation groove (3221) is connected to the top of the second module (322); the optical path adjustment sheet (35) is inserted into the optical path adjustment sheet installation groove (3221); and a sample detection light hole (34) is provided corresponding to each optical path adjustment sheet installation groove (3221).

5. A sample pool constant temperature preheating spectrum acquisition system according to claim 4, characterized in that: The heating resistor (39) is fixed on the outer wall of the first module (321).

6. A sample pool constant temperature preheating spectrum acquisition system according to claim 5, characterized in that: The temperature sensor (38) is fixed on the side wall of the first module.

7. A sample pool constant temperature preheating spectrum acquisition system according to claim 6, characterized in that: The optical coupling slice (37) is a T-shaped structure. The bottom plate of the optical coupling slice (37) is fixed to the side wall of the second module (322) by bolts. The height of the side plate of the optical coupling slice (37) corresponds to the inside of the U-shaped groove of the optical coupling (210).

8. A sample pool constant temperature preheating spectrum acquisition system according to claim 7, characterized in that: The linear slide rail (21) comprises a U-shaped seat, a lead screw is installed between two side plates of the U-shaped seat, the lead screw is connected to the drive motor (22), and a slider (23) is screwed onto the lead screw through a thread.

9. A sample pool constant temperature preheating spectrum acquisition system according to claim 8, characterized in that: The horizontal connecting plate (24) is mounted on the upper surface of the sliding block (23) by means of bolts.

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