A fully automatic ultraviolet oil measuring device with self-cleaning mechanism and method

Abstract

The application relates to the technical field of oil measuring devices, and particularly discloses a full-automatic ultraviolet oil measuring device with a self-cleaning mechanism and a method, which comprises a supporting plate and a multi-way valve, the multi-way valve is fixedly connected to the supporting plate, the multi-way valve comprises a valve body, a communicating device and multiple connecting ports, the communicating device is fixedly connected to the valve body, the multiple connecting ports are uniformly distributed on the communicating device, and the multiple connecting ports are respectively provided with injection assemblies, waste liquid assemblies, sample assemblies, detection assemblies, reagent bottles and extraction assemblies. The application can automatically perform early-stage treatment on water samples, can automatically clean the device, and can make sample sending more automatic and fast.

Description

Technical Field

[0001] This invention relates to the technical field of oil testing devices, and specifically to a fully automatic ultraviolet oil testing device and method with a self-cleaning mechanism. Background Technology

[0002] The ultraviolet (UV) oil content analyzer is a high-tech device based on ultraviolet spectrophotometry, used for the rapid and accurate detection of petroleum and animal / vegetable oil content in water samples. Its working principle utilizes the absorption characteristics of oil molecules under specific wavelengths of ultraviolet light. A photoelectric sensor measures changes in light intensity and converts them into an electrical signal, thereby calculating the total oil content. This device is widely used in environmental monitoring, petrochemicals, and other fields, and can detect the oil content in surface water, groundwater, and seawater.

[0003] The existing technology still has the following areas for improvement: the existing ultraviolet oil detection device requires manual pretreatment of water samples. Due to the long processing time and high repeatability, manual operation can easily lead to a decrease in accuracy, resulting in a decrease in detection efficiency and accuracy. The pretreatment uses a lot of instruments, and cleaning requires a lot of time, increasing labor costs. In addition, the long-term contact of reagents with the human body may have a negative impact on the environment and the health of operators. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a fully automatic ultraviolet oil testing device and method with a self-cleaning mechanism, which can automatically perform pretreatment of water samples, automatically clean the device, and make sample delivery more automatic and faster.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A fully automatic ultraviolet oil testing device with a self-cleaning mechanism includes a support plate and a multi-way valve. The multi-way valve is fixedly connected to the support plate. The multi-way valve includes a valve body, a communicating vessel, and multiple connection ports. The communicating vessel is fixedly connected to the valve body, and the multiple connection ports are evenly distributed on the communicating vessel.

[0007] Each of the multiple connection ports is respectively equipped with an injection component, a waste liquid component, a sample component, a detection component, a reagent bottle, and an extraction component.

[0008] Furthermore, the injection assembly includes an injection housing, a rotating shaft, a rotating screw, and a liquid-collecting housing. The injection housing is fixedly connected to the support plate, and the rotating screw is rotatably connected inside the injection housing. A driven gear is sleeved on one end of the rotating screw.

[0009] A drive gear is fitted on the rotating shaft, and the driven gear meshes with the drive gear. One end of the rotating shaft is rotatably connected to the inside of the injection housing, and a drive motor is fixedly installed at the other end of the rotating shaft.

[0010] Furthermore, the drive motor is fixedly connected inside the injection housing via a motor fixing block, and the drive motor and the rotating shaft are connected via a coupling. A sliding block is slidably arranged on the rotating lead screw.

[0011] The liquid collection housing has a sliding plate inside, and a push rod is fixedly installed at the upper end of the sliding plate. The push rod is fixedly connected to the sliding block through a connecting rod. The liquid collection housing and the rotating screw are parallel, and the lower end of the liquid collection housing is connected to the connection port.

[0012] Furthermore, the waste liquid assembly includes a waste liquid shell and a waste liquid cover. The waste liquid shell has a waste liquid tank inside, and an outlet is provided at the lower end of the waste liquid tank. The waste liquid cover is fixedly connected to the upper end of the waste liquid shell and is connected to the connection port. The outlet is connected to the waste liquid tank.

[0013] Furthermore, the sample assembly includes an active pulley, a driven pulley, a movable housing, multiple test tube placement components, and multiple rotating tracks, with each test tube placement component slidably connected to the interior of the corresponding rotating track via four sliding rails;

[0014] Each of the rotating tracks has a connecting track on each side, and every two adjacent connecting tracks are connected. Multiple rotating tracks and multiple connecting tracks are sleeved on the outside of the driving pulley and the driven pulley. Each test tube placement component has a sample test tube inside.

[0015] Furthermore, the driving pulley is sleeved on the driving shaft, and a moving motor is fixedly installed at the lower end of the driving shaft. The driven pulley is sleeved on the driven shaft. The moving motor is fixedly connected to the inside of the moving housing through a motor connecting block. The driven shaft is rotatably connected to the inside of the moving housing. The moving housing is located below the plurality of rotating tracks.

[0016] A lower platform is fixedly installed at the middle position of the upper end of the movable housing. A scissor fork is slidably installed above the lower platform. An upper platform is slidably installed above the scissor fork. A telescopic cylinder is rotatably installed on the upper platform. The other end of the telescopic cylinder is rotatably installed on the scissor fork. An extraction tube is fixedly installed on the support plate. The extraction tube and the upper platform are located on the same vertical line. The extraction tube is connected to the connection port.

[0017] Furthermore, the extraction assembly includes an extraction shell, a rotating rod, an extraction cover, and a separation shell. The extraction cover is fixedly connected to the upper end of the extraction shell and communicates with the connection port. A rotating motor is fixedly installed above the extraction cover. The upper end of the rotating rod is fixedly connected to the rotating motor. Multiple stirring rods are fixedly installed at the lower end of the rotating rod. A water supply pipe is fixedly installed at the lower end of the extraction shell, and a water pump and a switch valve are fixedly installed on the water supply pipe.

[0018] Furthermore, a separation cover is fixedly provided at the upper end of the separation shell, and a suction tube is fixedly provided on the separation cover. The separation cover is connected to the bottom of the extraction shell, and the suction tube is connected to the connection port.

[0019] Furthermore, the detection component includes an ultraviolet spectrophotometer and a magnesium silicate adsorption column, the magnesium silicate adsorption column being located above the ultraviolet spectrophotometer and connected to the connection port.

[0020] A method for using a fully automatic ultraviolet oil testing device with a self-cleaning mechanism includes the following steps:

[0021] S1: Place multiple water samples into their respective sample tubes, start the moving motor, the drive shaft drives the drive pulley to rotate, the rotating track and connecting track rotate, driving the driven pulley to rotate, and the driven pulley drives the driven shaft to rotate;

[0022] When the sample tube reaches below the extraction tube, the moving motor stops, the telescopic cylinder is activated, the scissor fork extends, the upper platform moves up, and the upper platform pushes the test tube placement piece up along the sliding track, so that the extraction tube is located inside the sample tube.

[0023] S2: Start the drive motor, the rotating shaft drives the drive gear to rotate, the drive gear drives the driven gear to rotate, the rotating screw rotates, the sliding block moves upward, the connecting rod drives the push rod to move upward, the push rod drives the moving plate to move upward, and the liquid collection shell draws water sample from the sample tube through the multi-way valve and the extraction tube;

[0024] S3: Adjust the multi-way valve, start the drive motor, the rotating shaft drives the drive gear to rotate, the drive gear drives the driven gear to rotate, the rotating screw rotates, the sliding block moves downward, the connecting rod drives the push rod to move downward, the push rod drives the moving plate to move downward, and the water sample is input into the extraction shell. After completion, adjust the multi-way valve to input the extraction reagent in the reagent bottle into the extraction shell.

[0025] S4: Start the rotating motor. The rotating rod drives the stirring rod to rotate, which fully mixes the sample and the extraction reagent in the extraction shell. After standing still and separating into layers, the extraction reagent, which has a lower specific gravity, will float on the surface of the water.

[0026] S5: Open the switch valve and water pump to discharge the water that has been separated into layers at the bottom of the extraction shell, and then close the switch valve and water pump.

[0027] S6: Transfer all the liquid in the extraction shell to the separation shell for separation, start the injection assembly, and draw the upper extract in the extraction shell into the liquid collection shell through the suction tube;

[0028] S7: The extract is fed into the magnesium silicate adsorption column through the multi-port valve, and then into the ultraviolet spectrophotometer through the magnesium silicate adsorption column to detect the absorbance of the water sample.

[0029] S8: After completing one test, start the moving motor. The drive shaft drives the drive pulley to rotate, which in turn rotates the track and connecting track, driving the driven pulley to rotate. The driven pulley drives the driven shaft to rotate, moving the next water sample to be tested to the bottom of the extraction tube. After the injection assembly absorbs part of the water sample, it outputs it to the waste liquid tank. The waste liquid is removed through the output port to rinse the injection assembly.

[0030] The beneficial effects of this invention are as follows:

[0031] (1) By setting up the injection assembly, the technical effect that can be achieved is that the injection shell is fixedly connected to the support plate, the rotating screw is rotatably connected to the inside of the injection shell, a driven gear is sleeved on one end of the rotating screw, a driving gear is sleeved on the rotating shaft, the driven gear and the driving gear mesh with each other, one end of the rotating shaft is rotatably connected to the inside of the injection shell, and a drive motor is fixedly installed on the other end of the rotating shaft.

[0032] The drive motor is started, the rotating shaft drives the drive gear to rotate, the drive gear drives the driven gear to rotate, the rotating screw rotates, the sliding block moves upward, the connecting rod drives the push rod to move upward, the push rod drives the moving plate to move upward, the liquid collection shell draws water sample from the sample tube through the multi-way valve and the extraction tube. The injection assembly can automatically perform pretreatment of the water sample and automatically transport the water sample to each stage without manual operation, reducing harm to the human body, reducing labor costs, and making the accuracy of water sample extraction higher.

[0033] (2) By setting up waste liquid components and multi-way valves, the technical effect that can be achieved is that the inside of the waste liquid shell is provided with a waste liquid tank, the lower end of the waste liquid tank is provided with an outlet, the waste liquid cover is fixedly connected to the upper end of the waste liquid shell, the waste liquid cover is connected to the connection port, the outlet is connected to the waste liquid tank, the communicating vessel is fixedly connected to the valve body, and multiple connection ports are evenly distributed on the communicating vessel.

[0034] After the injection unit draws in a portion of the water sample, it outputs it into the waste liquid tank. The waste liquid is removed through the outlet to rinse the injection unit. The waste liquid unit and the multi-way valve can automatically clean the device, preventing contamination between water samples, ensuring efficient overall operation, and extending the service life of the device.

[0035] (3) By setting up the sample assembly, the technical effect that can be achieved is that each test tube placement piece is slidably connected to the inside of the corresponding rotating track through four sliding rails. Each rotating track has a connecting track on both sides, and every two adjacent connecting tracks are connected. Multiple rotating tracks and multiple connecting tracks are connected to form a ring structure. Multiple rotating tracks and multiple connecting tracks are sleeved on the outside of the driving pulley and the driven pulley. Each test tube placement piece has a sample test tube inside.

[0036] Multiple water samples are placed in individual sample tubes. The moving motor is started, and the drive shaft drives the drive pulley to rotate. The rotating track and connecting track rotate, driving the driven pulley to rotate. The driven pulley drives the driven shaft to rotate. When the sample tube reaches below the extraction tube, the moving motor stops, and the telescopic cylinder is activated, causing the scissor fork to extend and the upper platform to move upward. The upper platform pushes the test tube placement component upward along the sliding track, so that the extraction tube is located inside the sample tube. The sample assembly enables more automatic and faster sample delivery, eliminating the need for manual sample delivery, improving experimental efficiency, and meeting the diverse sample transfer needs of large laboratories. Attached Figure Description

[0037] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0038] Figure 1 This is a front view of the present invention;

[0039] Figure 2 This is a front sectional view of the present invention;

[0040] Figure 3 This is a front sectional view of the injection component in this invention;

[0041] Figure 4 This is a front sectional view of the waste liquid assembly in this invention;

[0042] Figure 5 This is a frontal sectional view of the extraction shell in this invention;

[0043] Figure 6 This is a front sectional view of the separated shell in this invention;

[0044] Figure 7 This is a right view of the multi-way valve in this invention;

[0045] Figure 8This is a frontal sectional view of the sample component in this invention;

[0046] Figure 9 for Figure 8 A magnified view of part A in the image;

[0047] Figure 10 for Figure 8 A magnified view of part B in the image;

[0048] Figure 11 This is a top view of the rotating track, the test tube placement component, and the connecting track in this invention;

[0049] Explanation of key component symbols:

[0050] In the diagram: 1. Injection assembly; 11. Drive motor; 12. Injection housing; 13. Coupling; 14. Rotating shaft; 15. Drive gear; 16. Driven gear; 17. Sliding block; 18. Moving plate; 19. Liquid collection housing; 110. Push rod; 111. Connecting rod; 112. Rotating lead screw; 113. Motor fixing block;

[0051] 2. Waste liquid assembly; 21. Waste liquid housing; 22. Outlet; 23. Waste liquid tank; 24. Waste liquid cover;

[0052] 3. Sample assembly; 31. Moving housing; 32. Motor connecting block; 33. Moving motor; 34. Drive shaft; 35. Drive pulley; 36. Driven pulley; 37. Driven shaft; 38. Extraction tube; 39. Test tube placement component; 310. Upper platform; 311. Telescopic cylinder; 312. Lower platform; 313. Rotating track; 314. Scissor fork; 315. Connecting track; 316. Sample test tube; 317. Sliding track;

[0053] 4. Extraction assembly; 41. Extraction shell; 42. Switch valve; 43. Water supply pipe; 44. Water pump; 45. Stirring rod; 46. Rotating rod; 47. Extraction cover; 48. Rotating motor; 49. Separation cover; 410. Suction tube; 411. Separation shell;

[0054] 5. Detection components; 51. Ultraviolet spectrophotometer; 52. Magnesium silicate adsorption column;

[0055] 6. Multi-way valve; 61. Valve body; 62. Communicating device; 63. Connection port;

[0056] 7. Support plate;

[0057] 8. Reagent bottles. Detailed Implementation

[0058] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0059] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] Reference Figures 1 to 11 The present invention discloses a fully automatic ultraviolet oil testing device with a self-cleaning mechanism, which includes a support plate 7 and a multi-way valve 6. The multi-way valve 6 is fixedly connected to the support plate 7. The multi-way valve 6 includes a valve body 61, a communicating vessel 62 and seven connection ports 63. The communicating vessel 62 is fixedly connected to the valve body 61, and the seven connection ports 63 are evenly distributed on the communicating vessel 62.

[0062] Multiple connection ports 63 are respectively equipped with injection assembly 1, waste liquid assembly 2, sample assembly 3, detection assembly 5, reagent bottle 8 and extraction assembly 4.

[0063] The injection assembly 1 includes an injection housing 12, a rotating shaft 14, a rotating lead screw 112, and a liquid collection housing 19. The injection housing 12 is fixedly connected to the support plate 7, and the rotating lead screw 112 is rotatably connected inside the injection housing 12. A driven gear 16 is sleeved on one end of the rotating lead screw 112.

[0064] A drive gear 15 is fitted on the rotating shaft 14, and the driven gear 16 meshes with the drive gear 15. One end of the rotating shaft 14 is rotatably connected to the inside of the injection housing 12, and the other end of the rotating shaft 14 is fixedly equipped with a drive motor 11.

[0065] The drive motor 11 is fixedly connected to the inside of the injection housing 12 via the motor fixing block 113. The drive motor 11 and the rotating shaft 14 are connected via the coupling 13. A sliding block 17 is slidably arranged on the rotating lead screw 112.

[0066] The liquid collection housing 19 has a sliding plate 18 inside, and a push rod 110 is fixedly installed at the upper end of the sliding plate 18. The push rod 110 is fixedly connected to the sliding block 17 through the connecting rod 111. The liquid collection housing 19 and the rotating screw 112 are parallel, and the lower end of the liquid collection housing 19 is connected to the connection port 63.

[0067] The injection component 1 can automatically pre-treat water samples and automatically transport them to each stage without manual operation, reducing harm to the human body, reducing labor costs, and making the extraction of water samples more accurate.

[0068] The waste liquid assembly 2 includes a waste liquid housing 21 and a waste liquid cover 24. The waste liquid housing 21 has a waste liquid tank 23 inside, and an outlet 22 is provided at the lower end of the waste liquid tank 23. The waste liquid cover 24 is fixedly connected to the upper end of the waste liquid housing 21. The waste liquid cover 24 is connected to the connection port 63, and the outlet 22 is connected to the waste liquid tank.

[0069] Waste liquid assembly 2 and multi-way valve 6 can automatically clean the device, preventing contamination between water samples, ensuring efficient overall operation, and extending the service life of the device.

[0070] The sample assembly 3 includes an active pulley 35, a driven pulley 36, a movable housing 31, multiple test tube placement components 39, and multiple rotating tracks 313. Each test tube placement component 39 is slidably connected to the interior of the corresponding rotating track 313 via four sliding rails 317.

[0071] Each rotating track 313 has a connecting track 315 rotatably mounted on both sides. Every two adjacent connecting tracks 315 are connected to each other. Multiple rotating tracks 313 and multiple connecting tracks 315 are connected to form a ring structure. Multiple rotating tracks 313 and multiple connecting tracks 315 are sleeved on the outside of the driving pulley 35 and the driven pulley 36. Each test tube placement piece 39 has a sample test tube 316 inside.

[0072] The drive pulley 35 is mounted on the drive shaft 34, and a moving motor 33 is fixedly mounted on the lower end of the drive shaft 34. The driven pulley 36 is mounted on the driven shaft 37. The moving motor 33 is fixedly connected to the inside of the moving housing 31 through the motor connecting block 32. The driven shaft 37 is rotatably connected to the inside of the moving housing 31. The moving housing 31 is located below multiple rotating tracks 313.

[0073] A lower platform 312 is fixedly installed at the middle position of the upper end of the movable housing 31. A scissor fork 314 is slidably installed above the lower platform 312. An upper platform 310 is slidably installed above the scissor fork 314. A telescopic cylinder 311 is rotatably installed on the upper platform 310. The other end of the telescopic cylinder 311 is rotatably installed on the scissor fork 314. An extraction tube 38 is fixedly installed on the support plate 7. The extraction tube 38 and the upper platform 310 are located on the same vertical line. The extraction tube 38 is connected to the connection port 63.

[0074] Sample assembly 3 enables more automated and faster sample delivery, eliminating the need for manual sample delivery, thus improving experimental efficiency and meeting the diverse sample transfer needs of large laboratories.

[0075] The extraction assembly 4 includes an extraction shell 41, a rotating rod 46, an extraction cover 47, and a separation shell 411. The extraction cover 47 is fixedly connected to the upper end of the extraction shell 41 and is connected to the connection port 63. A rotating motor 48 is fixedly installed above the extraction cover 47. The upper end of the rotating rod 46 is fixedly connected to the rotating motor 48. Four stirring rods 45 are fixedly installed at the lower end of the rotating rod 46. A water supply pipe 43 is fixedly installed at the lower end of the extraction shell 41. A water pump 44 and a switch valve 42 are fixedly installed on the water supply pipe 43.

[0076] A separation cover 49 is fixedly installed on the upper end of the separation housing 411. A suction tube 410 is fixedly installed on the separation cover 49. The separation cover 49 is connected to the bottom of the extraction housing 41 through a separation pipe. A control valve and a control pump are installed on the separation pipe. The suction tube 410 is connected to the connection port 63.

[0077] The detection component 5 includes an ultraviolet spectrophotometer 51 and a magnesium silicate adsorption column 52. The magnesium silicate adsorption column 52 is located above the ultraviolet spectrophotometer 51 and is connected to the connection port 63.

[0078] A method for using a fully automatic ultraviolet oil testing device with a self-cleaning mechanism includes the following steps:

[0079] S1: Place multiple water samples into each sample tube 316, start the moving motor 33, drive the drive shaft 34 to drive the drive pulley 35 to rotate, rotate the track 313 and connecting track 315 to rotate, drive the driven pulley 36 to rotate, and drive the driven pulley 36 to drive the driven shaft 37 to rotate.

[0080] When the sample tube 316 reaches below the extraction tube 38, the moving motor 33 is stopped, the telescopic cylinder 311 is started, the scissor fork 314 is extended, the upper platform 310 is moved upward, and the upper platform 310 pushes the test tube placement piece 39 to move upward along the sliding track 317, so that the extraction tube 38 is located inside the sample tube 316.

[0081] S2: Start the drive motor 11, the rotating shaft 14 drives the drive gear 15 to rotate, the drive gear 15 drives the driven gear 16 to rotate, drives the rotating screw 112 to rotate, drives the sliding block 17 to move upward, the connecting rod 111 drives the push rod 110 to move upward, the push rod 110 drives the moving plate 18 to move upward, and the liquid collection shell 19 draws water sample from the sample tube 316 through the multi-way valve 6 and the extraction tube 38;

[0082] S3: Adjust the multi-way valve 6, start the drive motor 11, the rotating shaft 14 drives the drive gear 15 to rotate, the drive gear 15 drives the driven gear 16 to rotate, drives the rotating screw 112 to rotate, drives the sliding block 17 to move downward, the connecting rod 111 drives the push rod 110 to move downward, the push rod 110 drives the moving plate 18 to move downward, and inputs the water sample into the extraction shell 41. After completion, adjust the multi-way valve 6 to input the extraction reagent in the reagent bottle 8 into the extraction shell 41.

[0083] S4: Start the rotating motor 48, the rotating rod 46 drives the stirring rod 45 to rotate, and after the sample in the extraction shell 41 is fully mixed with the extraction reagent, it will stand still and separate into layers. The extraction reagent has a smaller specific gravity and will float on the upper layer of water.

[0084] S5: Open the switch valve 42 and water pump 44 to discharge the water that has been separated into layers at the bottom of the extraction shell 41, and then close the switch valve 42 and water pump 44.

[0085] S6: Transfer all the liquid in the extraction shell 41 into the separation shell 411 for separation, start the injection assembly 1, and draw the upper layer of extract liquid in the extraction shell 41 into the liquid collection shell 19 through the suction tube 410.

[0086] S7: The extract is fed into the magnesium silicate adsorption column 52 through the multi-port valve 6, and then into the ultraviolet spectrophotometer 51 through the magnesium silicate adsorption column 52 to detect the absorbance of the water sample.

[0087] S8: After completing one test, start the moving motor 33. The drive shaft 34 drives the drive pulley 35 to rotate, which in turn rotates the track 313 and the connecting track 315, driving the driven pulley 36 to rotate. The driven pulley 36 drives the driven shaft 37 to rotate, moving the next water sample to be tested to below the extraction tube 38. After the injection assembly 1 absorbs part of the water sample, it outputs it to the waste liquid tank 23. The waste liquid is removed through the output port 22 to rinse the injection assembly 1.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A fully automatic ultraviolet oil measuring device with self-cleaning mechanism, characterized in that: The utility model provides a multi -way valve (6) is fixedly connected on the support plate (7), the multi -way valve (6) includes valve body (61), communicating vessel (62) and a plurality of connecting ports (63), communicating vessel (62) is fixedly connected on the valve body (61), a plurality of connecting ports (63) are evenly distributed on communicating vessel (62); A plurality of connecting ports (63) are respectively provided with injection assembly (1), waste liquid assembly (2), sample assembly (3), detection assembly (5), reagent bottle (8) and extraction assembly (4);The waste liquid assembly (2) includes waste liquid shell (21) and waste liquid cover (24), the inside of waste liquid shell (21) is provided with waste liquid groove (23), the lower end of waste liquid groove (23) is provided with output port (22), waste liquid cover (24) is fixedly connected on the upper end of waste liquid shell (21), waste liquid cover (24) is communicated with connecting port (63), output port (22) is communicated with waste liquid barrel, the sample assembly (3) includes driving pulley (35), driven pulley (36), moving shell (31), a plurality of test tube placing pieces (39) and a plurality of rotating caterpillar bands (313), each test tube placing piece (39) is slidably connected in the inside of corresponding rotating caterpillar band (313) through four sliding rails (317); Each rotating caterpillar band (313) is rotatably provided with a connecting caterpillar band (315) on both sides, each two adjacent connecting caterpillar bands (315) are connected, a plurality of rotating caterpillar bands (313) and a plurality of connecting caterpillar bands (315) are arranged on the outside of driving pulley (35) and driven pulley (36), each test tube placing piece (39) is provided with a sample test tube (316) in the inside, driving pulley (35) is arranged on driving shaft (34), driving shaft (34) is fixedly provided with moving motor (33) on the lower end, driven pulley (36) is arranged on driven shaft (37), moving motor (33) is fixedly connected in the inside of moving shell (31) through motor connecting block (32), driven shaft (37) is rotatably connected in the inside of moving shell (31), and moving shell (31) is located below a plurality of rotating caterpillar bands (313). The lower platform (312) is arranged at the middle position of the upper end of the mobile shell (31), the scissor fork (314) is arranged above the lower platform (312) in a sliding mode, the upper platform (310) is arranged above the scissor fork (314) in a sliding mode, the telescopic air cylinder (311) is arranged on the upper platform (310) in a rotating mode, the other end of the telescopic air cylinder (311) is arranged on the scissor fork (314) in a rotating mode, the extraction pipe (38) is fixedly arranged on the support plate (7), the extraction pipe (38) and the upper platform (310) are located on the same vertical line, the extraction pipe (38) is connected with the connecting port (63), the extraction assembly (4) comprises an extraction shell (41), a rotating rod (46), an extraction cover (47) and a separation shell (411), the extraction cover (47) is fixedly connected to the upper end of the extraction shell (41), the extraction cover (47) is connected with the connecting port (63), a rotating motor (48) is fixedly arranged above the extraction cover (47), the upper end of the rotating rod (46) is fixedly connected to the rotating motor (48), a plurality of stirring rods (45) are fixedly arranged at the lower end of the rotating rod (46), a water conveying pipeline (43) is fixedly arranged at the lower end of the extraction shell (41), a water pump (44) and an on-off valve (42) are fixedly arranged on the water conveying pipeline (43), the detection assembly (5) comprises an ultraviolet spectrophotometer (51) and a magnesium silicate adsorption column (52), the magnesium silicate adsorption column (52) is located above the ultraviolet spectrophotometer (51), and the magnesium silicate adsorption column (52) is connected with the connecting port (63).

2. The full-automatic ultraviolet oil measuring device with self-cleaning mechanism according to claim 1, characterized in that: The injection assembly (1) comprises an injection shell (12), a rotating shaft (14), a rotating screw rod (112) and a liquid taking shell (19), the injection shell (12) is fixedly connected to the support plate (7), the rotating screw rod (112) is rotatably connected in the injection shell (12), and a driven gear (16) is arranged on one end of the rotating screw rod (112); The rotating shaft (14) is sleeved with a driving gear (15), the driven gear (16) and the driving gear (15) are meshed, one end of the rotating shaft (14) is rotatably connected in the injection shell (12), and the other end of the rotating shaft (14) is fixedly provided with a driving motor (11).

3. The full-automatic ultraviolet oil measuring device with self-cleaning mechanism according to claim 2, characterized in that: The driving motor (11) is fixedly connected in the injection shell (12) through a motor fixing block (113), the driving motor (11) and the rotating shaft (14) are connected through a shaft coupling (13), and a sliding block (17) is arranged on the rotating screw rod (112) in a sliding mode; The inside of the liquid taking shell (19) is slidably provided with a moving plate (18), the upper end of the moving plate (18) is fixedly provided with a pushing rod (110), the pushing rod (110) is fixedly connected with the sliding block (17) through a connecting rod (111), the liquid taking shell (19) is parallel with the rotating screw rod (112), and the lower end of the liquid taking shell (19) is communicated with the connecting port (63).

4. The full-automatic ultraviolet oil measuring device with self-cleaning mechanism according to claim 1, characterized in that: The upper end of the separation shell (411) is fixedly provided with a separation cover (49), the separation cover (49) is fixedly provided with a suction pipe (410), the separation cover (49) is communicated with the bottom of the extraction shell (41), and the suction pipe (410) is communicated with the connecting port (63).

5. The use of a fully automatic ultraviolet oil detector with self-cleaning mechanism, applied to the ultraviolet oil detector according to any one of claims 1-4, characterized in that: The method comprises the steps of: S1: a plurality of water samples are respectively placed in sample test tubes (316), a moving motor (33) is started, a driving shaft (34) drives a driving pulley (35) to rotate, a crawler belt (313) and a connecting crawler belt (315) are rotated, a driven pulley (36) is driven to rotate, and a driven shaft (37) is driven to rotate; When the sample test tube (316) reaches below the extraction pipe (38), the moving motor (33) is stopped, the telescopic air cylinder (311) is started, the scissor fork (314) is elongated, the upper platform (310) is moved upwards, the test tube placing piece (39) is pushed to move upwards along the sliding rail (317), and the extraction pipe (38) is located in the sample test tube (316). S2: the driving motor (11) is started, the rotating shaft (14) drives the driving gear (15) to rotate, the driving gear (15) drives the driven gear (16) to rotate, the rotating screw rod (112) is driven to rotate, the sliding block (17) is driven to move upwards, the connecting rod (111) drives the pushing rod (110) to move upwards, the pushing rod (110) drives the moving plate (18) to move upwards, the liquid taking shell (19) sucks the water sample in the sample test tube (316) through the multi-way valve (6) and the extraction pipe (38); S3: the multi-way valve (6) is adjusted, the driving motor (11) is started, the rotating shaft (14) drives the driving gear (15) to rotate, the driving gear (15) drives the driven gear (16) to rotate, the rotating screw rod (112) is driven to rotate, the sliding block (17) is driven to move downwards, the connecting rod (111) drives the pushing rod (110) to move downwards, the pushing rod (110) drives the moving plate (18) to move downwards, the water sample is input into the extraction shell (41), after completion, the multi-way valve (6) is adjusted, and the extraction reagent in the reagent bottle (8) is input into the extraction shell (41); S4: the rotating motor (48) is started, the rotating rod (46) drives the stirring rod (45) to rotate, after the sample in the extraction shell (41) is fully mixed with the extraction reagent, the sample is statically stratified, and the specific gravity of the extraction reagent is smaller, so that the extraction reagent floats on the upper layer of water; S5: the on-off valve (42) and the water pump (44) are opened, after the water at the bottom of the extraction shell (41) is discharged after stratification, the on-off valve (42) and the water pump (44) are closed. S6: All the liquid in the extraction shell (41) is moved into the separation shell (411) for separation, the injection assembly (1) is started, and the upper layer of the extraction liquid in the extraction shell (41) is extracted into the liquid taking shell (19) through the suction pipe (410); S7: The extraction liquid is input into the magnesium silicate adsorption column (52) through the multi-way valve (6), and then into the ultraviolet spectrophotometer (51) through the magnesium silicate adsorption column (52), and the absorbance of the water sample is detected; S8: After one detection is completed, the moving motor (33) is started, the driving shaft (34) drives the driving pulley (35) to rotate, the crawler belt (313) and the connecting crawler belt (315) are rotated, the driven pulley (36) is driven to rotate, the driven shaft (37) is driven to rotate, the next water sample to be detected is moved to the lower side of the suction pipe (38), and after the injection assembly (1) sucks part of the water sample, the injection assembly (1) is output to the waste liquid tank (23), the waste liquid is removed through the output port (22), and the injection assembly (1) is rinsed.

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