Rapid detection device for polycyclic aromatic hydrocarbon

Abstract

The rapid detection device comprises a main box body and a detection box, the detection box made of toughened glass is fixed in the main box body, the upper end face of the main box body is provided with a liquid inlet pipe communicated with the detection box, the left end face of the main box body is further provided with a feed port communicated with the detection box, and the feed port is communicated with the detection box. A fixed plate is fixed to the right side in the main box body, an ultraviolet lamp and a fluorescence detector are fixed to the left end face of the fixed plate, an electric telescopic rod is further fixed to the upper end face of the main box body, and the output end of the electric telescopic rod penetrates through the main box body to be connected with the movable plate. According to the rapid detection device for the polycyclic aromatic hydrocarbon, a lifting type stirring mechanism is adopted, rapid and uniform mixing of a to-be-detected object and an extraction solution can be achieved, a heating effect can be achieved in cooperation with a temperature control heating mechanism, so that the extraction efficiency is effectively improved, the detection aging is accelerated, and solid-liquid isolation can be achieved in the detection process in cooperation with the effect of a movable plate; therefore, the accuracy of detection data is prevented from being influenced by blocking of the to-be-detected object.

Description

Technical Field

[0001] The utility model relates to the technical field of polycyclic aromatic hydrocarbon detection, in particular to a rapid detection device for polycyclic aromatic hydrocarbons. Background Art

[0002] Polycyclic aromatic hydrocarbons refer to compounds with two or more benzene rings connected in the form of fused rings. They are a type of carcinogen produced by incomplete combustion of organic compounds and geochemical processes. They may exist in some textiles or leather products. In order to ensure the safety of the products, it is necessary to detect the content of polycyclic aromatic hydrocarbons in the products through a detection device. Existing detection devices, such as a textile polycyclic aromatic hydrocarbon detector with publication number CN218823938U, only need to add textile fragments to the device when detecting the content of polycyclic aromatic hydrocarbons in textiles by designing the coordination of liquid storage mechanism, reaction shell and detection mechanism. Subsequent reaction detection can be completed quickly, thereby improving the detection efficiency of the overall device. However, the above existing detection devices still have some shortcomings in actual use:

[0003] 1. When extracting PAHs from articles, the extraction is mainly carried out by directly mixing the test object with the extraction liquid, which has problems such as poor extraction effect and slow extraction efficiency;

[0004] 2. When testing after extraction, the test object is mixed in the liquid and cannot be isolated, resulting in the test object blocking the light and affecting the accuracy of the test data;

[0005] Therefore, in view of the above problems, a rapid detection device for polycyclic aromatic hydrocarbons is designed to better meet the actual use needs. Utility Model Content

[0006] The purpose of the utility model is to provide a rapid detection device for polycyclic aromatic hydrocarbons to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rapid detection device for polycyclic aromatic hydrocarbons, comprising a main box body and a detection box, a detection box made of tempered glass is fixed in the main box body, a liquid inlet pipe communicating with the detection box is arranged on the upper end face of the main box body, a material feed port communicating with the detection box is also arranged on the left end face of the main box body, a fixing plate is fixed on the right side of the main box body, a purple light and a fluorescence detector are fixed on the left end face of the fixing plate, an electric telescopic rod is also fixed on the upper end face of the main box body, an output end of the electric telescopic rod passes through the main box body and is connected with a movable plate, the movable plate is arranged in the detection box, a heating tube is fixed on the lower end face of the movable plate, and the detection box is connected to a separation box fixed in the main box body through a conduit.

[0008] Preferably, one end of a shading plate is fixed on the fixing plate symmetrically and tilted up and down, and the other end of the shading plate is connected and fixed to the detection box. The shading plate can achieve shading effect to ensure that the light of the ultraviolet lamp directly irradiates the detection liquid.

[0009] Preferably, the ultraviolet lamp is symmetrically distributed about the center line of the fluorescence detector, and the fluorescence detector is electrically connected to the display through a wire, and the display is fixed on the front end surface of the main box. After the detection is completed, the detection data is transmitted to the display through the fluorescence detector for display so that the staff can view it.

[0010] Preferably, the movable plate is slidably connected to the detection box, and a through hole is provided on the movable plate. The movable plate can achieve stirring effect to ensure extraction effect, and can isolate the detection object from the liquid during detection to ensure the accuracy of the detection data.

[0011] Preferably, buffer blocks are fixed symmetrically on the lower end surface of the movable plate, and the buffer blocks can achieve a buffering effect when in contact with the detection box. When the movable plate moves down to the extreme position, the buffering protection effect of the buffer blocks can prevent the movable plate from contacting and colliding with the detection box and causing damage to the device.

[0012] Preferably, the heating tube is symmetrically distributed about the center line of the movable plate, and the height of the heating tube is less than the height of the buffer block, and the heating tube is electrically connected to the temperature controller through a wire, and the temperature controller is fixed on the upper end surface of the main box body. Through the action of the heating tube, heating can be achieved, thereby further improving the extraction efficiency, and by limiting the height of the heating tube, damage caused by contact and collision between the heating tube and the detection box can be avoided.

[0013] Preferably, a filter plate is obliquely fixed in the separation box, and a solenoid valve is installed on the conduit between the separation box and the detection box. Through the above structure, solid-liquid separation can be achieved, which is convenient for subsequent processing.

[0014] Preferably, the opening on the left side of the separation box corresponds to the discharge port on the left side of the main box body, and the front end of the separation box is connected to the liquid outlet pipe, and the liquid outlet pipe runs through the front end surface of the main box body. The discharge port can facilitate the discharge and collection of the detected objects, and the liquid outlet pipe can facilitate the discharge and collection of the liquid.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the rapid detection device for polycyclic aromatic hydrocarbons adopts a lifting stirring mechanism, which can achieve rapid and uniform mixing of the object to be tested and the extraction liquid, and cooperates with the temperature control and heating mechanism to achieve a heating effect, thereby effectively improving the extraction efficiency and thus accelerating the detection timeliness, and cooperates with the function of the movable plate to achieve solid-liquid isolation during detection, thereby avoiding obstruction by the object to be tested and affecting the accuracy of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the main box of the utility model from the front;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the main box of the utility model in front view;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the separation box of the utility model.

[0020] In the figure: 1. main box body; 2. detection box; 3. liquid inlet pipe; 4. feed port; 5. display; 6. fixed plate; 601. shading plate; 7. ultraviolet light; 8. fluorescence detector; 9. electric telescopic rod; 10. movable plate; 1001. buffer block; 11. heating tube; 12. separation box; 1201. filter plate; 1202. solenoid valve; 13. discharge port; 14. liquid outlet pipe; 15. temperature controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution: a rapid detection device for polycyclic aromatic hydrocarbons, including a main box body 1 and a detection box 2, a detection box 2 made of tempered glass is fixed in the main box body 1, a liquid inlet pipe 3 communicating with the detection box 2 is arranged on the upper end face of the main box body 1, a feed port 4 communicating with the detection box 2 is also arranged on the left end face of the main box body 1, a fixing plate 6 is fixed on the right side of the main box body 1, a purple light lamp 7 and a fluorescence detector 8 are fixed on the left end face of the fixing plate 6, an electric telescopic rod 9 is also fixed on the upper end face of the main box body 1, an output end of the electric telescopic rod 9 passes through the main box body 1 and is connected with a movable plate 10, the movable plate 10 is arranged in the detection box 2, a heating tube 11 is fixed on the lower end face of the movable plate 10, and the detection box 2 is connected with a separation box 12 fixed in the main box body 1 through a conduit.

[0023] The movable plate 10 is slidably connected to the detection box 2, and a through hole is provided on the movable plate 10; a buffer block 1001 is fixed symmetrically to the lower end surface of the movable plate 10, and the buffer block 1001 contacts the detection box 2 to achieve a buffering effect; the heating tube 11 is symmetrically distributed about the center line of the movable plate 10, and the height of the heating tube 11 is less than the height of the buffer block 1001, and the heating tube 11 is electrically connected to the temperature controller 15 through a wire, and the temperature controller 15 is fixed to the upper end surface of the main box 1;

[0024] When using the rapid detection device for polycyclic aromatic hydrocarbons, if Figure 1-Figure 4 As shown, by putting the shredded material (cloth or leather material) into the detection box 2 through the feed port 4, and the size of the material (cloth or leather material) is larger than the size of the mesh hole on the movable plate 10, and then putting the extraction liquid into the detection box 2 through the liquid inlet pipe 3, when extracting polycyclic aromatic hydrocarbons, the temperature controller 15 can control the heating tube 11 to start, and then start the electric telescopic rod 9, and the movable plate 10 and the heating tube 11 are driven by the electric telescopic rod 9 to move up and down in an orderly manner. Through the action of the movable plate 10, the material and the extraction liquid can be mixed, and with the heating effect of the heating tube 11, the extraction efficiency of polycyclic aromatic hydrocarbons in the material can be effectively improved, and the detection is convenient. When the movable plate 10 moves down to the extreme position, the buffering protection effect of the buffer block 1001 can prevent the movable plate 10 and the heating tube 11 from contacting and colliding with the detection box 2 to cause damage to the device;

[0025] One end of a shading plate 601 is also fixed symmetrically and tilted on the fixing plate 6, and the other end of the shading plate 601 is connected and fixed to the detection box 2; the ultraviolet lamp 7 is symmetrically distributed about the center line of the fluorescence detector 8, and the fluorescence detector 8 is electrically connected to the display 5 through a wire, and the display 5 is fixed to the front end surface of the main box body 1; a filter plate 1201 is also fixed tilted in the separation box 12, and a solenoid valve 1202 is installed on the conduit between the separation box 12 and the detection box 2; the left opening of the separation box 12 corresponds to the left discharge port 13 of the main box body 1, and the front end of the separation box 12 is connected to the liquid outlet pipe 14, and the liquid outlet pipe 14 runs through the front end surface of the main box body 1;

[0026] After the extraction is completed, the heating tube 11 is turned off. Figure 1-Figure 4As shown, the through hole controls the electric telescopic rod 9 to extend, driving the movable plate 10 to move down to the limit position. Through the action of the movable plate 10, the solid-liquid separation in the detection box 2 can be achieved to avoid the material being mixed in the liquid and affecting the accuracy of the detection data. After the separation is completed, the ultraviolet lamp 7 and the fluorescence detector 8 are started again. With the action of the shading plate 601, the convergence of ultraviolet light can be achieved. At this time, the liquid in the detection box 2 emits fluorescence under the action of the ultraviolet lamp 7. With the action of the fluorescence detector 8, the content of polycyclic aromatic hydrocarbons can be detected. The detection data of the fluorescence detector 8 is transmitted to the display 5 for display so that the staff can view it. This is the working principle of the rapid detection device of polycyclic aromatic hydrocarbons.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection device for polycyclic aromatic hydrocarbons, comprising a main box (1) and a detection box (2), characterized in that: A detection box (2) made of tempered glass is fixed in the main box (1); a liquid inlet pipe (3) penetrating the detection box (2) is arranged on the upper end surface of the main box (1); a material feed port (4) penetrating the detection box (2) is also arranged on the left end surface of the main box (1); a fixing plate (6) is fixed on the right side of the main box (1); a purple light lamp (7) and a fluorescence detector (8) are fixed on the left end surface of the fixing plate (6); an electric telescopic rod (9) is also fixed on the upper end surface of the main box (1); an output end of the electric telescopic rod (9) penetrates the main box (1) and is connected to a movable plate (10); the movable plate (10) is arranged in the detection box (2); a heating tube (11) is fixed on the lower end surface of the movable plate (10); the detection box (2) is connected to a separation box (12) fixed in the main box (1) through a conduit.

2. The rapid detection device for polycyclic aromatic hydrocarbons according to claim 1, characterized in that: One end of a light shielding plate (601) is also fixed on the fixing plate (6) in an upward and downward symmetrical manner, and the other end of the light shielding plate (601) is connected and fixed to the detection box (2).

3. The rapid detection device for polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The ultraviolet lamps (7) are symmetrically distributed up and down about the center line of the fluorescence detector (8), and the fluorescence detector (8) is electrically connected to the display (5) through a wire, and the display (5) is fixed on the front end surface of the main box (1).

4. The rapid detection device for polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The movable plate (10) is slidably connected to the detection box (2), and a through hole is provided on the movable plate (10).

5. A rapid detection device for polycyclic aromatic hydrocarbons according to claim 4, characterized in that: The lower end surface of the movable plate (10) is also symmetrically fixed with a buffer block (1001) in the left-right and front-back directions, and the buffer block (1001) is in contact with the detection box (2) to achieve a buffering effect.

6. The rapid detection device for polycyclic aromatic hydrocarbons according to claim 1, characterized in that: The heating tube (11) is symmetrically distributed about the center line of the movable plate (10), and the height of the heating tube (11) is less than the height of the buffer block (1001), and the heating tube (11) is electrically connected to the temperature controller (15) through a wire, and the temperature controller (15) is fixed to the upper end surface of the main box (1).

7. The rapid detection device for polycyclic aromatic hydrocarbons according to claim 1, characterized in that: A filter plate (1201) is also fixed obliquely in the separation box (12), and a solenoid valve (1202) is installed on the conduit between the separation box (12) and the detection box (2).

8. A rapid detection device for polycyclic aromatic hydrocarbons according to claim 7, characterized in that: The left opening of the separation box (12) corresponds to the left discharge port (13) of the main box body (1), and the front end of the separation box (12) is connected to a liquid outlet pipe (14), and the liquid outlet pipe (14) passes through the front end surface of the main box body (1).

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