High-efficiency photocatalytic gas chromatograph

Abstract

The utility model discloses a high-efficiency photocatalytic gas chromatograph, which belongs to the technical field of gas chromatographs and comprises a dynamic circulating mechanism, a feeding mechanism is arranged at one end of the dynamic circulating mechanism, and an ultraviolet lamp is arranged above the dynamic circulating mechanism; the mounting assembly is arranged, the two ends of the ultraviolet illumination lamp are inserted into the two mounting frames respectively, the ultraviolet illumination lamp can be supported through a first straight rod, a second straight rod and the mounting frames, then a pressing screw rod is rotated to rotate and move along the mounting frames, the pressing screw rod rotates and moves to drive a pressing disc to rotate and move, and the ultraviolet illumination lamp is fixed through the pressing disc. And a pressing disc rotates and moves to push a moving plate to move along a guide column, the moving plate moves to extrude a connecting spring, and after the moving plate moves to be attached to the top wall of the ultraviolet illumination lamp, rotation of a pressing screw rod is stopped, installation operation of the ultraviolet illumination lamp can be conveniently achieved, and the installation stability of the ultraviolet illumination lamp can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of gas chromatography technology, specifically relating to a high-efficiency photocatalytic gas chromatograph. Background Technology

[0002] A gas chromatograph is an instrument that uses chromatographic separation and detection techniques to perform qualitative and quantitative analysis on complex mixtures of multiple components.

[0003] Chinese Patent Application No. 202323352894.4 discloses a high-efficiency photocatalytic gas chromatograph, comprising a photocatalytic device and a gas chromatograph. The photocatalytic device includes a dynamic circulation device and an ultraviolet irradiation system. The gas chromatograph is connected to the dynamic circulation device. The dynamic circulation device is equipped with solenoid valve inlet and outlet, and a flow control system is provided on the side of the solenoid valve inlet and outlet away from the dynamic circulation device. This invention achieves 24-hour automatic sampling and analysis function by connecting the photocatalytic reaction device and the gas chromatograph, which greatly improves the efficiency of photocatalytic evaluation, reduces workload, saves costs, and reduces human operation error.

[0004] The aforementioned patent describes a UV lamp positioned above the dynamic circulation device. The UV lamp is used to perform photocatalytic operation on the materials in the dynamic circulation device. However, the UV lamp is not placed in a fixed position, which can easily affect the installation stability of the UV lamp and thus its performance. In addition, when dust or other impurities adhere to the plexiglass tube in the dynamic circulation device, these impurities can easily affect the photocatalytic effect of the UV lamp on the materials in the dynamic circulation device. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a high-efficiency photocatalytic gas chromatograph, which is easy to install and clean.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency photocatalytic gas chromatograph, comprising a dynamic circulation mechanism, a feeding mechanism at one end of the dynamic circulation mechanism, an ultraviolet light lamp above the dynamic circulation mechanism, a gas chromatograph at the other end of the dynamic circulation mechanism, a cleaning component on the outer wall of the dynamic circulation mechanism, and an installation component between the ultraviolet light lamp and the dynamic circulation mechanism.

[0007] Preferably, the mounting assembly includes a mounting bracket, a clamping element, a first straight rod, and a second straight rod. The second straight rod is fixedly connected to one upper end of the dynamic circulation mechanism, and the first straight rod is fixedly connected to the other upper end of the dynamic circulation mechanism. The mounting bracket is fixedly connected to one end of the first straight rod and the second straight rod, and to both ends of the ultraviolet lamp. A clamping element is provided between the mounting bracket and the ultraviolet lamp.

[0008] Preferably, the clamping component includes a clamping screw, a clamping disc, a guide post, a connecting spring, and a movable plate. The movable plate is slidably connected inside the mounting frame and above the ultraviolet lamp. Guide posts are fixedly connected inside the mounting frame and on both sides of the ultraviolet lamp. Guide holes are provided on the movable plate at positions corresponding to the guide posts. A connecting spring is fixedly connected between the mounting frame and the movable plate and around the guide posts. A threaded hole is provided above the mounting frame. A clamping screw is threadedly connected inside the threaded hole. A clamping disc is fixedly connected to one end of the clamping screw near the movable plate.

[0009] Preferably, both the mounting bracket and the movable plate are fixedly connected to a base pad on the side closest to the ultraviolet light lamp.

[0010] Preferably, the cleaning component includes a wiping cotton ring and an outer ring. The outer ring is sleeved around the periphery of the dynamic circulation mechanism, and the wiping cotton ring is fixedly connected to the inner side wall of the outer ring.

[0011] Preferably, the cleaning assembly further includes a perforation, a fixing screw, and a fixing nut. The fixing screw is fixedly connected to the side of the outer ring near the second straight rod. A perforation is provided on the second straight rod at the position corresponding to the fixing screw. A fixing nut is threadedly connected to the outer wall of the fixing screw on the side of the second straight rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model includes an installation assembly. The two ends of the ultraviolet lamp are inserted into two mounting brackets. The ultraviolet lamp is supported by a first straight rod, a second straight rod, and the mounting brackets. Rotating the clamping screw causes it to rotate along the mounting brackets. This rotation of the clamping screw drives the clamping plate to rotate, which in turn pushes a moving plate along a guide post. The moving plate then presses against a connecting spring. Once the moving plate is in contact with the top wall of the ultraviolet lamp, the clamping screw is stopped. This facilitates the installation of the ultraviolet lamp and ensures its stability.

[0014] 2. This utility model is equipped with a cleaning component. The fixing nut is removed by rotating it off the fixing screw. The external force between the second straight rod and the outer ring is removed. Then, the outer ring is moved by hand. The movement of the outer ring causes the fixing screw to move away from the second straight rod through the through hole. Then, the fixing screw is moved by hand to move the outer ring along the outer wall of the dynamic circulation mechanism. The movement of the outer ring causes the wiping cotton ring to move. During the movement of the wiping cotton ring, the outer wall of the dynamic circulation mechanism can be wiped and cleaned to ensure the cleanliness of the outer surface of the dynamic circulation mechanism. This, in turn, can ensure the photocatalytic effect of the ultraviolet light lamp on the materials inside the dynamic circulation mechanism. Attached Figure Description

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

[0016] Figure 2 This is a cross-sectional view of the mounting bracket of this utility model connected to an ultraviolet light lamp;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Feeding mechanism; 2. Mounting assembly; 21. Mounting bracket; 22. Clamping component; 221. Clamping screw; 222. Clamping plate; 223. Guide column; 224. Connecting spring; 225. Moving plate; 23. First straight rod; 24. Second straight rod; 25. Base pad; 3. Ultraviolet light lamp; 4. Gas chromatograph; 5. Dynamic circulation mechanism; 6. Cleaning assembly; 61. Wiping cotton ring; 62. Perforation; 63. Fixing screw; 64. Fixing nut; 65. External connecting ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Please see Figure 1-4 The present invention provides the following technical solution: a high-efficiency photocatalytic gas chromatograph, comprising a dynamic circulation mechanism 5, a feeding mechanism 1 at one end of the dynamic circulation mechanism 5, an ultraviolet light lamp 3 above the dynamic circulation mechanism 5, a gas chromatograph 4 at the other end of the dynamic circulation mechanism 5, a cleaning component 6 on the outer wall of the dynamic circulation mechanism 5, and an installation component 2 between the ultraviolet light lamp 3 and the dynamic circulation mechanism 5.

[0023] Specifically, the mounting assembly 2 includes a mounting bracket 21, a clamping element 22, a first straight rod 23, and a second straight rod 24. The second straight rod 24 is fixedly connected to one upper end of the dynamic circulation mechanism 5, and the first straight rod 23 is fixedly connected to the other upper end of the dynamic circulation mechanism 5. The mounting bracket 21 is fixedly connected to one end of the first straight rod 23 and the outer periphery of both ends of the ultraviolet lamp 3. A clamping element 22 is provided between the mounting bracket 21 and the ultraviolet lamp 3.

[0024] By adopting the above technical solution, the two ends of the ultraviolet lamp 3 are respectively inserted into the two mounting brackets 21. The ultraviolet lamp 3 can be supported by the first straight rod 23, the second straight rod 24 and the mounting brackets 21. Then, the ultraviolet lamp 3 is pressed by the clamping member 22, which facilitates the installation of the ultraviolet lamp 3 and ensures the stability of the installation.

[0025] Specifically, the clamping component 22 includes a clamping screw 221, a clamping plate 222, a guide post 223, a connecting spring 224, and a movable plate 225. The movable plate 225 is slidably connected inside the mounting bracket 21 and above the ultraviolet lamp 3. Guide posts 223 are fixedly connected inside the mounting bracket 21 on both sides of the ultraviolet lamp 3. Guide holes are provided on the movable plate 225 at positions corresponding to the guide posts 223. A connecting spring 224 is fixedly connected between the mounting bracket 21 and the movable plate 225, around the guide posts 223. A threaded hole is provided above the mounting bracket 21, and the clamping screw 221 is threadedly connected inside the threaded hole. The clamping plate 222 is fixedly connected to one end of the clamping screw 221 near the movable plate 225.

[0026] By adopting the above technical solution, after the ultraviolet lamp 3 is inserted into the two mounting brackets 21, the clamping screw 221 is rotated to make it rotate and move along the mounting bracket 21. The rotation and movement of the clamping screw 221 drives the clamping plate 222 to rotate and move. The rotation and movement of the clamping plate 222 pushes the moving plate 225 to move along the guide post 223. The moving plate 225 moves and squeezes the connecting spring 224. When the moving plate 225 moves and fits against the top wall of the ultraviolet lamp 3, the rotation of the clamping screw 221 is stopped. The moving plate 225 can be used to clamp the ultraviolet lamp 3 to ensure the stability of the installation of the ultraviolet lamp 3.

[0027] Specifically, both the mounting bracket 21 and the movable plate 225 are fixedly connected to a base pad 25 on the side closest to the ultraviolet light lamp 3.

[0028] By adopting the above technical solution, when the ultraviolet lamp 3 is fixed between the mounting bracket 21 and the movable plate 225, the friction between the mounting bracket 21 and the movable plate 225 and the ultraviolet lamp 3 can be avoided under the action of the bottom pad 25, thereby preventing the ultraviolet lamp 3 from being worn.

[0029] In this embodiment, the two ends of the ultraviolet lamp 3 are respectively inserted into the two mounting brackets 21. The ultraviolet lamp 3 can be supported by the first straight rod 23, the second straight rod 24, and the mounting brackets 21. Then, the clamping screw 221 is rotated, causing it to rotate and move along the mounting brackets 21. The rotation and movement of the clamping screw 221 drives the clamping plate 222 to rotate and move. The rotation and movement of the clamping plate 222 pushes the moving plate 225 to move along the guide post 223. The moving plate 225 presses against the connecting spring 224. When the moving plate 225 moves and fits against the top wall of the ultraviolet lamp 3, it stops. Rotating the clamping screw 221, under the action of the base pad 25, can prevent friction between the mounting bracket 21 and the moving plate 225 and the ultraviolet lamp 3, thereby preventing wear of the ultraviolet lamp 3, facilitating the installation of the ultraviolet lamp 3, and ensuring the stability of the installation of the ultraviolet lamp 3. Then, the material is injected into the dynamic circulation mechanism 5 through the feeding mechanism 1. The ultraviolet lamp 3 is used to perform photocatalytic operation on the material inside the dynamic circulation mechanism 5, improving the decomposition efficiency of the material. The decomposed material enters the gas chromatograph 4 for measurement.

[0030] Example 2

[0031] The difference between this embodiment and Embodiment 1 is that the cleaning component 6 includes a wiping cotton ring 61 and an outer ring 65. The outer ring 65 is sleeved around the periphery of the dynamic circulation mechanism 5, and the wiping cotton ring 61 is fixedly connected to the inner side wall of the outer ring 65.

[0032] Specifically, the cleaning component 6 also includes a through hole 62, a fixing screw 63, and a fixing nut 64. The fixing screw 63 is fixedly connected to the side of the outer ring 65 near the second straight rod 24. The through hole 62 is provided on the second straight rod 24 at the position corresponding to the fixing screw 63. The fixing nut 64 is threadedly connected to the outer wall of the fixing screw 63 on the side of the second straight rod 24.

[0033] By adopting the above technical solution, when the wiping cotton ring 61 is not needed, the outer ring 65 is moved to fit against the second straight rod 24, and the fixing screw 63 passes through the through hole 62. Then, the fixing nut 64 is rotated and screwed onto the fixing screw 63, so that it fits against the side wall of the second straight rod 24. The fixing screw 63 and the fixing nut 64 can be used to fix the outer ring 65, ensuring the stability of the wiping cotton ring 61.

[0034] In this embodiment, the fixing nut 64 is removed by rotating it off the fixing screw 63. The external force between the second straight rod 24 and the outer ring 65 is removed. Then, the outer ring 65 is moved by hand. The movement of the outer ring 65 causes the fixing screw 63 to move away from the second straight rod 24 through the through hole 62. Then, the fixing screw 63 is moved by hand to move the outer ring 65 along the outer side wall of the dynamic circulation mechanism 5. The movement of the outer ring 65 causes the wiping cotton ring 61 to move. During the movement of the wiping cotton ring 61, the outer side wall of the dynamic circulation mechanism 5 can be wiped and cleaned to ensure the cleanliness of the outer surface of the dynamic circulation mechanism 5. This ensures the photocatalytic effect of the ultraviolet light lamp 3 on the materials inside the dynamic circulation mechanism 5.

[0035] The structure and principle of the feeding mechanism 1, which consists of an inlet and outlet of a solenoid valve, a pressure regulating valve, a filter, and a mass flow meter, have been disclosed in a high-efficiency photocatalytic gas chromatograph disclosed in Chinese patent application number 202323352894.4. Its working principle is as follows: an inlet and outlet of a solenoid valve are fixedly connected to the side wall of the dynamic circulation mechanism 5. The end of the solenoid valve inlet and outlet away from the dynamic circulation mechanism 5 is connected in sequence to a mass flow meter, a filter, and a pressure regulating valve. In use, the flow rate and pressure of the gas source are controlled by the pressure regulating valve, the filter, the mass flow meter, and the inlet and outlet of the solenoid valve to enter the interior of the dynamic circulation mechanism 5.

[0036] The structure and principle of the dynamic circulation mechanism 5, which consists of a first glass tube, an plexiglass tube, and a circulation pump, in this invention have been disclosed in a high-efficiency photocatalytic gas chromatograph disclosed in Chinese patent application number 202323352894.4. Its working principle is as follows: a first glass tube is fixedly connected to one end of the inlet and outlet of the solenoid valve in the feeding mechanism 1. Plexiglass tubes are fixedly connected to both ends of the first glass tube. Plexiglass tubes are also fixedly connected to the side wall of the gas chromatograph 4. A circulation pump is fixedly connected between the gas chromatograph 4 and the plexiglass tube at one end of the first glass tube. During use, the feeding mechanism 1 injects the material into the first glass tube, and semiconductor oxide materials such as TiO2 and the sample are installed inside the first glass tube. The circulation pump drives the gas circulation, and the ultraviolet lamp 3 is turned on. Through photo-irradiation reaction, pollutants of a certain concentration are rapidly degraded and decomposed, directly converting harmful substances into harmless substances.

[0037] The working principle and usage process of this utility model are as follows: The two ends of the ultraviolet lamp 3 are respectively inserted into two mounting brackets 21. The first straight rod 23, the second straight rod 24, and the mounting brackets 21 support the ultraviolet lamp 3. Then, the clamping screw 221 is rotated, causing it to rotate and move along the mounting brackets 21. The rotation of the clamping screw 221 drives the clamping plate 222 to rotate and move. The clamping plate 222 pushes the moving plate 225 along the guide post 223. The moving plate 225 presses against the connecting spring 224. When the moving plate 225 moves and adheres to the top wall of the ultraviolet lamp 3, the rotation of the clamping screw 221 is stopped. With the action of the bottom pad 25, friction between the mounting brackets 21 and the moving plate 225 and the ultraviolet lamp 3 is avoided, thus preventing wear on the ultraviolet lamp 3. This facilitates the installation of the ultraviolet lamp 3 and ensures the stability of the installation. Remove the fixing nut 64 from the fixing screw 63 by rotating it. The second straight rod 24 and the outer ring 65 lose their external force. Then, hold the outer ring 65 and move it. The movement of the outer ring 65 causes the fixing screw 63 to move away from the second straight rod 24 through the through hole 62. Then, hold the fixing screw 63 again and move the outer ring 65 along the outer wall of the dynamic circulation mechanism 5. The movement of the outer ring 65 causes the wiping cotton ring 61 to move. During the movement of the wiping cotton ring 61, the outer wall of the dynamic circulation mechanism 5 can be wiped and cleaned to ensure the cleanliness of the outer surface of the dynamic circulation mechanism 5. This ensures the photocatalytic effect of the ultraviolet lamp 3 on the material inside the dynamic circulation mechanism 5. Then, the material is injected into the dynamic circulation mechanism 5 through the feeding mechanism 1. The ultraviolet lamp 3 performs photocatalytic operation on the material inside the dynamic circulation mechanism 5, improving the decomposition efficiency of the material. The decomposed material enters the gas chromatograph 4 for measurement.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency photocatalytic gas chromatograph, comprising a dynamic circulation mechanism (5), wherein a feeding mechanism (1) is provided at one end of the dynamic circulation mechanism (5), an ultraviolet lamp (3) is provided above the dynamic circulation mechanism (5), and a gas chromatograph (4) is provided at the other end of the dynamic circulation mechanism (5), characterized in that: A cleaning component (6) is provided on the outer wall of the dynamic circulation mechanism (5), and an installation component (2) is provided between the ultraviolet light lamp (3) and the dynamic circulation mechanism (5).

2. The high-efficiency photocatalytic gas chromatograph according to claim 1, characterized in that: The mounting assembly (2) includes a mounting bracket (21), a clamping member (22), a first straight rod (23) and a second straight rod (24). The second straight rod (24) is fixedly connected to one end of the dynamic circulation mechanism (5), and the first straight rod (23) is fixedly connected to the other end of the dynamic circulation mechanism (5). The mounting bracket (21) is fixedly connected to one end of the first straight rod (23) and the second straight rod (24) and to both ends of the ultraviolet lamp (3). A clamping member (22) is provided between the mounting bracket (21) and the ultraviolet lamp (3).

3. The high-efficiency photocatalytic gas chromatograph according to claim 2, characterized in that: The clamping component (22) includes a clamping screw (221), a clamping plate (222), a guide post (223), a connecting spring (224), and a moving plate (225). The moving plate (225) is slidably connected inside the mounting bracket (21) and above the ultraviolet lamp (3). The guide post (223) is fixedly connected inside the mounting bracket (21) and on both sides of the ultraviolet lamp (3). A guide hole is opened on the moving plate (225) at the position corresponding to the guide post (223). A connecting spring (224) is fixedly connected between the mounting bracket (21) and the moving plate (225) and outside the guide post (223). A threaded hole is opened above the mounting bracket (21). The clamping screw (221) is threadedly connected inside the threaded hole. The clamping plate (222) is fixedly connected to one end of the clamping screw (221) near the moving plate (225).

4. The high-efficiency photocatalytic gas chromatograph according to claim 3, characterized in that: The mounting bracket (21) and the movable plate (225) are both fixedly connected to a base pad (25) on the side of the ultraviolet light lamp (3).

5. The high-efficiency photocatalytic gas chromatograph according to claim 1, characterized in that: The cleaning component (6) includes a wiping cotton ring (61) and an outer ring (65). The outer ring (65) is sleeved around the periphery of the dynamic circulation mechanism (5), and the wiping cotton ring (61) is fixedly connected to the inner side wall of the outer ring (65).

6. The high-efficiency photocatalytic gas chromatograph according to claim 5, characterized in that: The cleaning assembly (6) also includes a through hole (62), a fixing screw (63) and a fixing nut (64). The fixing screw (63) is fixedly connected to the side of the outer ring (65) near the second straight rod (24). The through hole (62) is opened on the second straight rod (24) at the position corresponding to the fixing screw (63). The fixing nut (64) is threadedly connected to the outer wall of the fixing screw (63) on the side of the second straight rod (24).

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