Photochemical post-column derivation device

Abstract

The utility model provides a photochemical post-column derivation device which comprises a base and an upper cover installed on the top of the base, a middle base is arranged between the base and the upper cover, a lamp source channel is formed between the upper cover and the middle base, a derivation pipeline channel is formed between the base and the middle base, and cooling fins are installed in the middle of the middle base. A dot matrix type solid-state semiconductor electroluminescent light source is tightly attached to one surface, facing the derivative pipeline channel, of the radiating fin through a viscous material; an ultraviolet light source driver, a direct current conversion module and a switch are mounted in the lamp source channel; a coil assembly is mounted in the derivation pipeline channel; the dot-matrix solid-state semiconductor electroluminescent light source is communicated with the ultraviolet light source driver through an electric wire, the ultraviolet light source driver is communicated with the switch, the switch is communicated with the power line, and the dot-matrix solid-state semiconductor electroluminescent light source has the advantages of being simple in structure, convenient to use and stable in performance.

Description

Technical Field

[0001] The utility model relates to the technical field of biological instruments, in particular to a photochemical post-column derivatizer. Background Art

[0002] Most of the existing post-column photochemical derivatization instruments use ultraviolet fluorescent lamps as the ultraviolet light source, which requires starting components such as ballasts and starters, and has many wirings. Due to the working principles of the ballasts and starters, the failure rate of the components is high. Due to the usage characteristics of the ultraviolet fluorescent lamps, problems such as a decrease in the intensity of the ultraviolet light source will occur after 3,000 hours of use. Although selecting imported ultraviolet light sources can delay the problem of light intensity decrease to a certain extent, it still cannot be avoided.

[0003] Most of the existing post-column optical derivatization instruments adopt a design without air ducts or with a single air duct to adjust the internal temperature of the system. Since it cannot be sealed and the product is relatively long, it is impossible to ensure the same temperature at the beginning and the end of the air duct.

[0004] Most of the existing post-column optical derivatization instruments use methods such as cable ties and plexiglass to fix the three-dimensional network-woven derivatization pipelines or winding derivatization pipelines. Due to long-term exposure to ultraviolet light, materials such as cable ties and plexiglass will age, turn yellow, become brittle, etc., affecting the fixing effect and even the transmittance of ultraviolet light. Fixing the coil with cable ties and plexiglass cannot ensure the consistency of the distance between the derivatization pipeline and the light source, which is likely to cause differences in the derivatization effect, and is more likely to cause the phenomenon of the derivatization pipeline bursting due to the high temperature caused by the close distance between the derivatization pipeline and the light source. Content of the Utility Model

[0005] The technical problems to be solved by the utility model are that problems such as a decrease in the intensity of the ultraviolet light source will occur after the existing post-column photochemical derivatization instruments are used for a long time, it is impossible to ensure the same temperature at the beginning and the end of the air duct, and due to long-term exposure to ultraviolet light, materials such as cable ties and plexiglass will age, turn yellow, become brittle, etc., affecting the fixing effect and even the transmittance of ultraviolet light.

[0006] To solve the above technical problems, a photochemical post-column derivatizer provided by the utility model includes a base and an upper cover installed on the top of the base. A middle seat is provided between the base and the upper cover. A lamp source channel is formed between the upper cover and the middle seat, and a derivatization pipeline channel is formed between the base and the middle seat. Heat dissipation fins are installed in the middle of the middle seat. One side of the heat dissipation fins facing the derivatization pipeline channel is closely attached with a dot matrix solid-state semiconductor electroluminescent light source through an adhesive material; an ultraviolet light source driver, a DC conversion module, and a switch are installed in the lamp source channel; a coil assembly is installed in the derivatization pipeline channel; the dot matrix solid-state semiconductor electroluminescent light source is connected to the ultraviolet light source driver through a wire, the ultraviolet light source driver is connected to the switch, and the switch is connected to the power supply line.

[0007] Further, a first fan is provided on the bottom surface of one side of the middle seat. The first fan is connected to the lamp source channel and the derivatization pipeline channel. A second fan is provided on the side surface of the other side of the middle seat far from the first fan, and the second fan is connected to the outside. The first fan and the second fan are respectively connected to the DC conversion module through wires. The DC conversion module is connected to the switch, and the switch is connected to the power supply line.

[0008] Further, a heat dissipation window is provided on one side of the upper cover, and a plurality of first heat dissipation holes are provided on the bottom of the base.

[0009] Further, the outside air sequentially passes through the first heat dissipation holes, the derivatization pipeline channel, the first fan and is discharged through the heat dissipation window to form a first heat dissipation air duct; the outside air sequentially passes through the second fan, the lamp source channel and is discharged through the heat dissipation window to form a second heat dissipation air duct.

[0010] Further, the coil assembly includes a three-dimensional network braided coil. One side of the three-dimensional network braided coil is in contact with the specular reflection side of the reflective metal plate, and the other side is in contact with the light-transmitting cover plate. It is fixed by elastic fixing wires. Fixed silica gels are provided on both sides of the reflective metal plate. The reflective metal plate is connected to the base through screws. The screws pass through the fixed silica gels and are fixed on the non-specular reflection side of the reflective metal plate. A limit silica gel is sleeved on the exposed screw.

[0011] Further, the length of the reflective metal plate is greater than that of the light-transmitting cover plate.

[0012] Further, the bottom surface of the base is provided with bottom corners.

[0013] Further, the power supply line is connected to the side surface of the middle seat through a waterproof power supply fixing head.

[0014] Further, the light-transmitting cover plate is made of a quartz glass plate or an alumina sapphire plate with high ultraviolet light transmittance.

[0015] Advantages of the utility model:

[0016] 1. This utility model adopts a dot matrix solid-state semiconductor electroluminescent light source and an ultraviolet light source driver, reducing wiring. The ultraviolet light source driver stabilizes voltage and current in real time, reducing the failure rate. The dot matrix solid-state semiconductor electroluminescent light source has a service life of up to tens of thousands of hours, reducing the operating cost and maintenance cost of users. Because the light source life is extended, the light intensity attenuation between different batches is small, and there is stronger comparability between tests.

[0017] 2. This utility model designs a double air duct, separating the derivative pipeline and the light source into two channels, and simultaneously performing ventilation and heat dissipation treatment, avoiding problems such as poor heat dissipation caused by insufficient power of heat dissipation components due to the heat concentration of the two channels in one place.

[0018] 3. This utility model uses a quartz glass plate or an alumina sapphire plate with high ultraviolet light transmittance. Due to the characteristics of the material, it will not age, turn yellow, become brittle, etc. due to long-term irradiation. Through the quartz glass plate or alumina sapphire plate with high ultraviolet light transmittance, the consistency of the distance between the derivative pipeline and the light source is ensured, the transmittance of the ultraviolet light source is enhanced, the same derivative effect is ensured, and the occurrence of derivative pipeline rupture is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional view of a photochemical post-column derivatizer.

[0020] Figure 2 is a schematic structural diagram of a photochemical post-column derivatizer.

[0021] Figure 3 is a schematic internal structure diagram of a photochemical post-column derivatizer.

[0022] Figure 4 is a three-dimensional view of the coil assembly in a photochemical post-column derivatizer.

[0023] As shown in the figure:

[0024] 1. Base; 2. Upper cover; 3. Middle seat; 4. Switch; 5. Waterproof power supply fixing head; 6. Foot; 7. Ultraviolet light source driver; 8. DC conversion module; 9. Coil assembly; 901. Reflective metal plate; 902. Three-dimensional network braided coil; 903. Elastic fixing wire; 904. Fixing silicone; 905. Transparent cover plate; 906. Limiting silicone; 10. First fan; 11. Second fan; 12. Heat dissipation fins; 13. Dot matrix solid-state semiconductor electroluminescent light source; 14. Heat dissipation window; 15. Power supply wire; 16. Second heat dissipation hole; 17. Third heat dissipation hole; 18. Light source channel; 19. Derivative pipeline channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will further illustrate the specific implementation manners of the present utility model in conjunction with the accompanying drawings. Among them, the same components are denoted by the same reference numerals.

[0026] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0027] In order to make the content of the present utility model more clearly understood, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] Combined with the attached Figures 1-4 As shown, a photochemical post-column derivatizer includes a base 1 and an upper cover 2 installed on the top of the base 1. A middle seat 3 is provided between the base 1 and the upper cover 2. A light source channel 18 is formed between the upper cover 2 and the middle seat 3, and a derivatization pipeline channel 19 is formed between the base 1 and the middle seat 3.

[0029] The present utility model designs a double air duct, divides the derivatization pipeline and the light source into two channels, and conducts ventilation and heat dissipation treatment simultaneously, avoiding problems such as poor heat dissipation caused by insufficient power of heat dissipation components due to the concentration of heat in one place in the two channels.

[0030] A heat dissipation fin 12 is installed in the middle of the middle seat 3. One side of the heat dissipation fin 12 facing the derivatization pipeline channel 19 is closely attached with a dot matrix solid-state semiconductor electroluminescent light source 13 through an adhesive material; an ultraviolet light source driver 7, a DC conversion module 8, and a switch 4 are installed in the light source channel 18.

[0031] The heat dissipation fin 12 improves the heat dissipation efficiency of the dot matrix solid-state semiconductor electroluminescent light source 13.

[0032] The ultraviolet light source driver 7 is an integrated driver, reducing wiring. The integrated driver stabilizes voltage and current in real time, reducing the failure rate.

[0033] The dot matrix solid-state semiconductor electroluminescent light source 13 has a service life of up to tens of thousands of hours, reducing the operation cost and maintenance cost of users. Because the service life of the light source is increased, the light intensity attenuation between different batches is relatively small, and there is stronger comparability between tests.

[0034] A coil assembly 9 is installed in the derivatization pipeline channel 19.

[0035] The coil assembly 9 includes a three-dimensional network woven coil 902. One side of the three-dimensional network woven coil 902 is in contact with the specular reflection side of the reflective metal plate 901, and the other side is in contact with the light-transmitting cover plate 905 and is fixed by elastic fixing wires 903. Fixed silica gels 904 are provided on both sides of the reflective metal plate 901. The reflective metal plate 901 is connected to the base 1 by screws. The screws pass through the fixed silica gels 904 and are fixed on the non-specular reflection side of the reflective metal plate 901, and a limit silica gel 906 is sleeved on the exposed screw. The length of the reflective metal plate 901 is greater than that of the light-transmitting cover plate 905. The light-transmitting cover plate is made of a quartz glass plate or an alumina sapphire plate with high ultraviolet light transmittance.

[0036] The light-transmitting cover plate 905 of the present utility model is a quartz glass plate or an alumina sapphire plate with high ultraviolet light transmittance. Due to the characteristics of the material, it will not age, turn yellow, become brittle, etc. due to long-term irradiation. By using a quartz glass plate or an alumina sapphire plate with high ultraviolet light transmittance, the consistency of the distance between the derivative pipeline and the light source is ensured, the transmittance of the ultraviolet light source is enhanced, the same derivative effect is ensured, and the occurrence of the rupture of the derivative pipeline is also reduced.

[0037] The dot matrix solid-state semiconductor electroluminescent light source 13 is connected to the ultraviolet light source driver 7 through an electric wire. The ultraviolet light source driver 7 is connected to the switch 4, and the switch 4 is connected to the power supply line 15.

[0038] The switch button of the switch 4 is installed on the outer surface of the upper cover 2, and the power supply can be controlled.

[0039] The ultraviolet light source driver 7 drives the dot matrix solid-state semiconductor electroluminescent light source 13 to emit light.

[0040] A first fan 10 is provided on the bottom surface of one side of the middle seat 3. The first fan 10 is communicated with the light source channel 18 and the derivative pipeline channel 19. A second fan 11 is provided on the side surface of the other side of the middle seat 3 far away from the first fan 10. The second fan 11 is communicated with the outside. The first fan 10 and the second fan 11 are respectively connected to the DC conversion module 8 through electric wires. The DC conversion module 8 is connected to the switch 4, and the switch 4 is connected to the power supply line 15.

[0041] A heat dissipation window 14 is provided on one side of the upper cover 2, and a plurality of first heat dissipation holes 17 are provided at the bottom of the base 1.

[0042] Furthermore, the outside air sequentially passes through the first heat dissipation holes 17, the derivative pipeline channel 19, and the first fan 10 and is discharged through the heat dissipation window 14 to form a first heat dissipation air duct; the outside air sequentially passes through the second fan 11, the light source channel 18 and is discharged through the heat dissipation window 14 to form a second heat dissipation air duct.

[0043] The first fan 10 is connected to the light source channel 18 and the derivative pipeline channel 19 for heat dissipation. The second fan 11 is located on the other side of the middle seat 3 and is connected to the outside for heat dissipation. The DC conversion module 8 is connected to the first fan 10 and the second fan 11 to provide power. The switch 4 controls the DC conversion module 8 and thus controls the on / off of the fans. The power cord 15 provides power and is connected to the switch 4. The upper cover 2 is provided with a heat dissipation window 14 for heat dissipation. The bottom of the base 1 is provided with a plurality of first heat dissipation holes 17 for heat dissipation.

[0044] The working process of the heat dissipation air duct is as follows:

[0045] For the first heat dissipation air duct: External air enters through the first heat dissipation holes 17, passes through the derivative pipeline channel 19, then passes through the first fan 10, and finally is discharged through the heat dissipation window 14.

[0046] For the second heat dissipation air duct: External air enters through the second fan 11, passes through the light source channel 18, and then is discharged through the heat dissipation window 14.

[0047] The bottom surface of the base 1 is provided with base corners 6. The base corners 6 are used to increase the contact area at the bottom of the device and reduce sliding. The power cord 15 is connected to the side of the middle seat 3 through a waterproof power supply fixing head 5. The power cord 15 is connected to the power supply of the device to provide electricity. The waterproof power supply fixing head 5: A fixing device for protecting the power cord 15 from moisture and ensuring the safety and reliability of the power connection. The power cord 15 is connected to the side of the middle seat 3 through the waterproof power supply fixing head 5 to ensure the safety and reliability of the power connection.

[0048] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0049] The above has described the present utility model and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those skilled in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative concept of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A photochemical post-column derivatizer, comprising a base (1) and an upper cover (2) mounted on the top of the base (1), characterized in that: A middle seat (3) is provided between the base (1) and the upper cover (2); a light source channel (18) is formed between the upper cover (2) and the middle seat (3); a derivative pipeline channel (19) is formed between the base (1) and the middle seat (3); a heat dissipation fin (12) is installed in the middle of the middle seat (3); and a dot matrix solid-state semiconductor electroluminescent light source (13) is tightly attached to the heat dissipation fin (12) on one side facing the derivative pipeline channel (19) through an adhesive material; An ultraviolet light source driver (7), a DC conversion module (8), and a switch (4) are installed in the light source channel (18); A coil assembly (9) is installed in the derivative pipeline channel (19); The dot matrix solid-state semiconductor electroluminescent light source (13) is connected to the ultraviolet light source driver (7) via an electric wire, the ultraviolet light source driver (7) is connected to the switch (4), and the switch (4) is connected to the power line (15).

2. A photochemical post-column derivatizer according to claim 1, characterized in that: A first fan (10) is provided on the bottom surface of one side of the middle seat (3), and the first fan (10) is connected to a light source channel (18) and a derivative pipeline channel (19). A second fan (11) is provided on the side surface of the other side of the middle seat (3) away from the first fan (10). The second fan (11) is connected to the outside. The first fan (10) and the second fan (11) are respectively connected to a DC conversion module (8) through electric wires. The DC conversion module (8) is connected to a switch (4), and the switch (4) is connected to a power line (15).

3. A photochemical post-column derivatizer according to claim 2, characterized in that: A heat dissipation window (14) is provided on one side of the upper cover (2), and a plurality of first heat dissipation holes (17) are provided on the bottom of the base (1).

4. A photochemical post-column derivatizer according to claim 3, characterized in that: The outside air is discharged through the first heat dissipation hole (17), the derived pipeline channel (19), and the first fan (10) in sequence through the heat dissipation window (14) to form a first heat dissipation air duct; and the outside air is discharged through the second fan (11), the light source channel (18), and the heat dissipation window (14) in sequence to form a second heat dissipation air duct.

5. A photochemical post-column derivatizer according to claim 1, characterized in that: The coil assembly (9) comprises a three-dimensional network braided coil (902), one side of the three-dimensional network braided coil (902) is located in contact with the mirror-reflective side of the reflective metal plate (901), and the other side is in contact with the light-transmitting cover plate (905), and is fixed by an elastic fixing wire (903). Both sides of the reflective metal plate (901) are provided with fixing silicone rubber (904). The reflective metal plate (901) is connected to the base (1) by screws. The screws pass through the fixing silicone rubber (904) and are fixed to the non-mirror-reflective side of the reflective metal plate (901). A limiting silicone rubber (906) is sleeved on the exposed screws.

6. A photochemical post-column derivatizer according to claim 5, characterized in that: The reflective metal plate (901) is longer than the light-transmitting cover plate (905).

7. A photochemical post-column derivatizer according to claim 1, characterized in that: The bottom surface of the base (1) is provided with a bottom corner (6).

8. A photochemical post-column derivatizer according to claim 1, characterized in that: The power line (15) is connected to the side of the middle seat (3) through a waterproof power fixing head (5).

9. A photochemical post-column derivatizer according to claim 1, characterized in that: The light-transmitting cover plate (905) is made of a quartz glass plate or an alumina sapphire plate with high ultraviolet light transmittance.

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