Water quality detection and analysis instrument and use method

Abstract

The application belongs to the technical field of water quality detection equipment, and particularly relates to a water quality detection and analysis instrument and a use method. The instrument aims at the problems of low efficiency and easy pollution of a probe to affect precision in traditional manual water quality filtration and water quality detection. The instrument comprises a shell, a cover plate and a partition plate. The partition plate is provided with a liquid storage tank, a filter cartridge and a multi-parameter water quality detector. The cover plate is closed to drive a lifting plate. A cable drives a ring-shaped disc. Magnetic attraction is used to stir the sample and flocculating agent to accelerate mixing. A separation structure uses buoyancy and magnetic repulsion to guide supernatant into the filter cartridge for filtration. A detection structure is matched with a push plate through an arc-shaped plate. A rack and a spur gear are used to rotate an electric push rod to realize alternate detection and cleaning of two probes. The instrument improves water quality detection efficiency and precision and is more convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of water quality testing equipment technology, and in particular to a water quality testing and analysis instrument and its usage method. Background Technology

[0002] Water quality testing is a crucial step in ensuring water resource security, rationally utilizing water resources, and maintaining ecological stability. With rapid industrial development and accelerated urbanization, water pollution has become increasingly serious, making accurate and efficient water quality testing particularly critical.

[0003] In existing technologies, water quality testing requires staff to collect water samples and then manually filter the water before testing can be conducted. This process affects the efficiency of water quality testing. Furthermore, testing is often performed using a single probe, and the water sample adhering to the probe's outer wall cannot be removed in time after the probe finishes testing, which affects the accuracy of subsequent tests.

[0004] Therefore, developing a water quality testing and analysis instrument that can efficiently, accurately, and comprehensively detect water quality, and has good sample processing and probe cleaning functions, is of great practical significance. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing water quality testing methods, such as the need for manual water filtration, low efficiency, and easy contamination of probes affecting accuracy. This invention proposes a water quality testing and analysis instrument and its usage method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A water quality testing and analysis instrument, comprising:

[0008] The housing has a cover plate rotatably connected to one side.

[0009] A partition is fixed inside the housing, and a multi-parameter water quality analyzer is fixed to its top;

[0010] A liquid storage tank, fixedly penetrating the partition, is used to hold water samples;

[0011] A filter cartridge is fixed to the bottom of the partition plate, and a filter membrane is fixed inside it;

[0012] Connect the hose to the bottom of the liquid storage tank and the filter cartridge;

[0013] The drive structure, located within the partition and the storage tank, includes a rotating disk, stirring blades, magnet I, an annular disk, magnet II, a cable, a guide wheel, and a lifting plate;

[0014] The separation structure, located inside the liquid storage tank and filter cartridge, includes a fixed cylinder, a sliding cylinder, a float plate, a liquid inlet, a connecting plate, a baffle plate, a horizontal plate, and a magnet III;

[0015] A vacuum pump is fixed to the bottom of the partition plate and connected to the bottom of the filter cartridge via a pipe.

[0016] Two probes are located below the partition and are electrically connected to the multi-parameter water quality analyzer.

[0017] The detection structure includes a conveyor belt, alternating placement cylinders I and II, reagent bottles, cleaning cylinders, electric push rods, rotating plates, spur gears, racks, L-shaped brackets, push plates, bases, guide rods, and springs.

[0018] In one possible design, in the drive structure, the rotating disk is rotatably connected to the inner wall of the bottom of the storage tank, the stirring blade is fixed at its top, and the magnet I is embedded at its bottom;

[0019] The annular disk is rotatably connected to the bottom of the liquid storage tank, and the magnet II is embedded in its top, with the magnet II magnetically attracted to the magnet I.

[0020] The cable is wound around the outer wall of the annular disc, and one end of it is fixed to the lifting plate via the guide wheel;

[0021] The lifting plate slides through the partition and cooperates with the cover plate;

[0022] When the cover plate is closed, it pushes the lifting plate to move downward, the cable drives the annular disk to rotate, and the magnet II drives the rotating disk to rotate through magnetic attraction.

[0023] In one possible design, in the separation structure, the fixed cylinder is fixed to the inner wall of the bottom of the liquid storage tank and communicates with the connecting hose, and its bottom end rotates through the rotating disk;

[0024] The sliding cylinder is slidably and sealed inside the fixed cylinder, and the float plate is fixedly sleeved on its outer wall.

[0025] The liquid inlet is located inside the sliding cylinder and below the float plate;

[0026] The horizontal plate is fixed inside the sliding cylinder, the connecting plate is slidably connected above the horizontal plate, and the baffles are fixed on both sides of its bottom.

[0027] The magnet III is respectively embedded in the bottom of the connecting plate and the top of the horizontal plate;

[0028] Wherein, the buoyancy force on the float plate is greater than the total weight of the sliding cylinder, and the magnet III generates a repulsive force when energized, pushing the baffle to release the blockage of the liquid inlet.

[0029] In one possible design, in the detection structure, an arc-shaped plate is fixed on one side of the placement cylinder II;

[0030] The electric push rod is rotatably connected to the bottom of the partition, its output shaft is fixed to the rotating plate, and the two probes pass through both ends of the rotating plate;

[0031] The spur gear is fixed to the outer wall of the electric push rod, and the rack is slidably connected to the bottom of the partition and meshes with the spur gear;

[0032] The L-shaped bracket is fixed to one side of the rack, and the push plate is fixed to its bottom end. The push plate cooperates with the arc-shaped plate.

[0033] The guide rod slides through the base and is fixedly connected to the L-shaped bracket; the spring is sleeved on the outer wall of the guide rod and connects the base and the L-shaped bracket.

[0034] The arc-shaped plate pushes the push plate to drive the rack to move, and the spur gear drives the electric push rod to rotate to switch the positions of the two probes.

[0035] In one possible design, a retaining ring is also included, which is fixed to the bottom of the storage tank and located within the annular disk;

[0036] A disc spring is sleeved between the fixed ring and the annular disk, with one end fixedly connected to the outer wall of the fixed ring and the other end fixedly connected to the inner wall of the annular disk;

[0037] The disc spring drives the annular disk to reset after it rotates.

[0038] In one possible design, a drain pipe II is also included, which is fixed to the side of the storage tank away from the filter cartridge and extends to the outside of the housing;

[0039] Solenoid valves are provided on the outer walls of the drain pipe II, the connecting hose, and the drain pipe I.

[0040] In one possible design, a collection box is also included, which slides through the housing on the side near the electric push rod;

[0041] The cleaning cylinder is located above the collection box.

[0042] In one possible design, rubber rings are fixed to the inner walls of both placement cylinder I and placement cylinder II.

[0043] In one possible design, a liquid storage ring is fixed to the inner wall of the cleaning cylinder, and the liquid storage ring is provided with multiple liquid outlets and connected to a liquid injection pipe;

[0044] Pure water is sprayed from the outlet onto the probe located inside the cleaning cylinder.

[0045] This application discloses a water quality testing and analysis instrument and its usage method, comprising the following steps:

[0046] S1. Flocculation and stirring: The water sample to be tested is injected into the storage tank, flocculant is added and the cover is closed; when the cover is closed, the lifting plate is pushed down, the ring disk is rotated by the cable, and the magnetic attraction between the first magnet and the second magnet drives the rotating disk to drive the stirring blades to stir the sample.

[0047] S2. Extraction and filtration: After the sample settles, energize the two third magnets to generate a repulsive force that pushes the baffle upward to open the inlet; use the buoyancy of the float plate to suspend the sliding cylinder and position the inlet in the supernatant layer; start the vacuum pump to create negative pressure inside the filter cartridge, and draw the supernatant into the filter cartridge through the sliding cylinder, fixed cylinder and connecting hose and position it above the filter membrane. Under the action of negative pressure, the supernatant quickly passes through the filter membrane to complete the filtration.

[0048] S3. Sample dispensing: The reagent bottle is conveyed by the conveyor belt and the first and second placement cylinders; when the reagent bottle moves to the bottom of the drain pipe of the filter cartridge, the solenoid valve on the drain pipe is opened to discharge the filtered sample into the reagent bottle.

[0049] S4. Detection and Cleaning: When the reagent bottle in the first placement tube is moved to the bottom of the probe, the electric push rod is controlled to push the probe down into the reagent bottle for detection. After the detection is completed, the probe moves up to reset.

[0050] When the reagent bottle in the second placement cylinder is moved to the bottom of the probe, the arc plate on the conveyor belt pushes the push plate, which drives the electric push rod and rotating plate to rotate 180 degrees through the rack and spur gear, switching the position of the two probes;

[0051] The electric push rod is controlled to move the probe downwards, so that one probe enters the reagent bottle to detect the sample, while the other probe enters the cleaning cylinder; pure water is introduced into the liquid storage ring above the cleaning cylinder, and the pure water flows out through the outlet to clean the probe located in the cleaning cylinder;

[0052] S5. Reset and Sample Discharge: The conveyor belt continues to run, causing the arc plate to disengage from the push plate. The push plate is reset under the action of the spring and drives the probe to rotate 180 degrees in the opposite direction to reset. After the test is completed, the reagent bottle pours the sample inside into the collection box at the end of the conveyor belt.

[0053] Beneficial effects: In this invention, a rotating disk is mounted on the inner wall of the bottom of the storage tank. Multiple magnets I are fixedly embedded in the bottom of the rotating disk. An annular disk is rotatably connected to the bottom of the storage tank. A magnet II is fixedly embedded in the top of the annular disk. A cable is wound around the outer wall of the annular disk. One end of the cable is fixedly connected to a lifting plate. When the cover plate closes with the shell, it pushes the lifting plate down. The lifting plate pulls the cable, which drives the annular disk to rotate. The disc spring starts to be in a charged state. The annular disk drives the rotating disk to rotate through the magnetic attraction between magnets I and II. The rotating disk stirs the sample in the storage tank through the stirring blades, so that the flocculant dissolves quickly in the sample.

[0054] In this invention, a fixed cylinder is fixed to the inner wall of the bottom of the storage tank, and a sliding cylinder is slidably connected inside the fixed cylinder. A float plate is fixedly sleeved on the outer wall of the sliding cylinder. Two liquid inlets are provided inside the sliding cylinder, and a connecting plate located above a horizontal plate is slidably connected inside the sliding cylinder. Baffles for blocking the liquid inlets are fixed on both sides of the bottom of the connecting plate. Magnets III are fixedly embedded at the bottom of the connecting plate and the top of the horizontal plate. The repulsive force between the two magnets III pushes the connecting plate and the baffles to move upward, releasing the blockage of the liquid inlets. The supernatant in the storage tank enters the filter cartridge through the sliding cylinder, the fixed cylinder, and the connecting hose, and filters the sample under the action of the filter membrane, avoiding impurities in the sample from affecting the accuracy of subsequent probe detection.

[0055] In this invention, the output shaft of the electric push rod is fixed with a rotating plate, and both probes are fixedly inserted through the rotating plate. A spur gear is fixed to the outer wall of the electric push rod, and a rack is slidably connected to the bottom of the partition. A push plate is fixed to one side of the rack via an L-shaped bracket. The arc-shaped plate and the push plate cooperate to drive the rack to move, thereby swapping the positions of the two probes. One clean probe is then used for testing, while the other probe with the sample attached is placed in a cleaning cylinder for cleaning. When the arc-shaped plate disengages from the push plate, the L-shaped bracket and the rack reset under the action of a spring, swapping the positions of the two probes again. The two probes are used alternately to ensure that both probes are clean for testing, thus ensuring the accuracy of the test.

[0056] In this invention, the closing of the cover plate drives the stirring structure, allowing the flocculant to dissolve quickly in the sample and shortening the sedimentation time. The separation structure utilizes buoyancy and magnetic repulsion to quickly inject the supernatant into the filter cartridge for filtration, avoiding interference from impurities. The detection structure allows two probes to be used alternately, with one probe being used for detection while the other is being cleaned in the cleaning cartridge, ensuring the probe is clean and improving detection accuracy. All structures work together to optimize the sample processing and detection process, improve overall detection efficiency, and provide a more efficient and accurate solution for water quality testing. Attached Figure Description

[0057] Figure 1 A three-dimensional structural schematic diagram of a water quality testing and analysis instrument provided by the present invention;

[0058] Figure 2 This is a three-dimensional cross-sectional structural diagram of a water quality testing and analysis instrument provided by the present invention;

[0059] Figure 3 This is a three-dimensional cross-sectional structural diagram of the filter cartridge and storage tank of a water quality testing and analysis instrument provided by the present invention.

[0060] Figure 4 A three-dimensional exploded view of the rotating disk, fixed ring, and annular disk of a water quality testing and analysis instrument provided by the present invention;

[0061] Figure 5 This is a three-dimensional cross-sectional structural diagram of the sliding cylinder and the fixed cylinder of a water quality testing and analysis instrument provided by the present invention;

[0062] Figure 6 A three-dimensional exploded structural diagram of the connecting plate and the horizontal plate of a water quality testing and analysis instrument provided by the present invention;

[0063] Figure 7 A three-dimensional structural diagram of the conveyor belt, placement cylinder I, and placement cylinder II of a water quality testing and analysis instrument provided by the present invention;

[0064] Figure 8 A three-dimensional structural diagram of the arc plate, rack and spur gear of a water quality testing and analysis instrument provided by the present invention;

[0065] Figure 9 This is a three-dimensional cross-sectional structural diagram of the cleaning cylinder of a water quality testing and analysis instrument provided by the present invention.

[0066] In the diagram: 1. Shell; 2. Cover plate; 3. Rotating door; 4. Partition; 5. Liquid storage tank; 6. Connecting hose; 7. Filter cartridge; 8. Filter membrane; 9. Vacuum pump; 10. Drain pipe I; 11. Rotary disc; 12. Stirring blade; 13. Magnet I; 14. Annular disc; 15. Magnet II; 16. Fixing ring; 17. Disc spring; 18. Cable; 19. Guide wheel; 20. Lifting plate; 21. Fixed cylinder; 22. Sliding cylinder; 23. Float; 24. Liquid inlet; 25. Connecting plate; 26. Baffle. 27. Horizontal plate; 28. Magnet III; 29. ​​Conveyor belt; 30. Placement cylinder I; 31. Placement cylinder II; 32. Reagent bottle; 33. Arc plate; 34. Drain pipe II; 35. Electric push rod; 36. Rotating plate; 37. Probe; 38. Spur gear; 39. Rack; 40. L-shaped bracket; 41. Push plate; 42. Base; 43. Guide rod; 44. Spring; 45. Cleaning cylinder; 46. Liquid storage ring; 47. Liquid outlet; 48. Discharge pipe; 49. Collection box; 50. Multi-parameter water quality analyzer. Detailed Implementation

[0067] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0068] In one embodiment: Refer to Figures 1-8 The detection and analysis instrument relates to the field of water quality testing equipment technology. The device is mainly composed of a shell 1, a cover plate 2, a partition plate 4, a multi-parameter water quality analyzer 50, a storage tank 5, a filter cartridge 7, a connecting hose 6, a drive structure, a separation structure, a probe 37, and a detection structure.

[0069] Reference Figure 1 and Figure 2 The housing 1 forms the main frame of the entire instrument, supporting and protecting the internal components. Housing 1 is made of high-strength plastic, possessing excellent corrosion resistance and mechanical strength, effectively protecting the internal precision components from external environmental influences. The cover 2 is hinged to one side of housing 1, used to seal housing 1 and prevent dust, impurities, etc., from entering the instrument. The edge of cover 2 is equipped with a sealing strip; when cover 2 is closed, the sealing strip fits tightly against housing 1, ensuring the airtightness of housing 1. Opening and closing cover 2 is convenient and can be done manually or electrically.

[0070] Reference Figure 1 and Figure 2 A partition 4 is fixedly installed inside the housing 1, dividing the internal space of the housing 1 into upper and lower parts. The partition 4 is made of stainless steel with a thickness of 5-10 mm, providing sufficient strength and stability. The partition 4 has multiple mounting holes and channels for installing a multi-parameter water quality analyzer 50 and fixing the storage tank 5. The multi-parameter water quality analyzer 50 is fixedly installed on top of the partition 4 for processing and analyzing the tested water quality data. The multi-parameter water quality analyzer 50 has multiple detection functions, capable of simultaneously detecting multiple parameters of water quality such as pH, dissolved oxygen, conductivity, and turbidity. This analyzer adopts advanced sensor technology and data processing algorithms, offering advantages such as high detection accuracy, fast response speed, and good stability.

[0071] Reference Figure 2 and Figure 3A storage tank 5 is fixedly connected to a partition 4 and is used to hold the water sample to be tested. The volume of the storage tank 5 is designed according to actual testing needs. The top of the storage tank 5 has an opening for adding samples and flocculants; a connecting hose 6 is fixedly connected to the bottom. A filter cartridge 7 is fixedly installed at the bottom of the partition 4 and is used to filter the supernatant discharged from the storage tank 5. The filter cartridge 7 has a cylindrical structure. A filter membrane 8 is fixed inside the filter cartridge 7. The filter membrane 8 is a polypropylene filter membrane, which can effectively filter out small impurities and particles in the supernatant. One end of the connecting hose 6 is fixedly connected to the bottom of the storage tank 5, and the other end is fixedly extended into the filter cartridge 7, used to discharge the supernatant after sample sedimentation in the storage tank 5 into the filter cartridge 7. The connecting hose 6 is made of rubber, has good flexibility and corrosion resistance, and can adapt to connection requirements in different positions. The connection point between the connecting hose 6 and the filter cartridge 7 is located above the filter membrane 8.

[0072] Reference Figure 3 and Figure 4 The drive structure is located within the partition 4 and the storage tank 5, and is used to rapidly mix the sample and flocculant in the storage tank 5 for precipitation. The drive structure mainly includes a rotating disk 11, stirring blades 12, magnet I 13, an annular disk 14, magnet II 15, a cable 18, guide wheels 19, a lifting plate 20, and a disc spring 17. The rotating disk 11 is rotatably connected to the bottom inner wall of the storage tank 5, and multiple stirring blades 12 are fixed to the top of the rotating disk 11. The stirring blades 12 are made of stainless steel, and there are 4-8 of them. When the rotating disk 11 rotates, the stirring blades 12 rotate accordingly, stirring the sample and flocculant in the storage tank 5, accelerating their mixing, allowing the flocculant to dissolve quickly in the sample, and promoting the precipitation of impurities in the sample.

[0073] Reference Figure 3 and Figure 4 Multiple magnets I13 are fixedly embedded in the bottom of the rotating disk 11. Magnets I13 are made of neodymium iron boron strong magnetic material and have high magnetism. An annular disk 14 is rotatably connected to the bottom of the liquid storage tank 5. A magnet II15 is fixedly embedded in the top of the annular disk 14. The material and performance of magnet II15 are the same as those of magnet I13. Magnet II15 and magnet I13 cooperate to generate magnetic attraction. Through this magnetic attraction, the annular disk 14 can drive the rotating disk 11 to rotate. A cable 18 is wound around the outer wall of the annular disk 14. The cable 18 is made of steel wire rope and has high strength and wear resistance. A guide wheel 19 is rotatably connected to the bottom of the partition 4 through a bracket. The guide wheel 19 is used to change the direction of force on the cable 18. A lifting plate 20 slides through the partition 4. The lifting plate 20 cooperates with the cover plate 2. When the cover plate 2 closes the shell 1, it pushes the lifting plate 20 to move downward. One end of the cable 18 rests on the guide wheel 19 and is fixedly connected to the lifting plate 20. When the lifting plate 20 moves down, it pulls the cable 18, causing the annular disc 14 to rotate.

[0074] Reference Figure 3 and Figure 4 A retaining ring 16 is fixed to the bottom of the storage tank 5, and the top end of the hose passes through the retaining ring 16, which is located inside the annular disk 14. A disc spring 17 is sleeved between the retaining ring 16 and the annular disk 14. One end of the disc spring 17 is fixedly connected to the outer wall of the retaining ring 16, and the other end is fixedly connected to the inner wall of the annular disk 14. The disc spring 17 is made of stainless steel, with the following parameters: outer diameter 30-50 mm, inner diameter 15-30 mm, thickness 3-8 mm, free height 10-20 mm, working stroke 2-6 mm, and preload 10-50 N. The function of the disc spring 17 is to reset the annular disk 14 after it rotates, preparing it for the next stirring.

[0075] In actual operation, when the cover plate 2 closes with the shell 1, it pushes the lifting plate 20 downward, pulling the cable 18. The cable 18 drives the annular disk 14 to rotate, at which point the disc spring 17 begins to store energy. The annular disk 14 drives the rotating disk 11 to rotate through the magnetic attraction between magnet I 13 and magnet II 15. The rotating disk 11 stirs the sample in the storage tank 5 through the stirring blades 12, causing the flocculant to dissolve quickly in the sample, accelerating the mixing of the sample and flocculant, and promoting the formation of precipitate.

[0076] Reference Figure 3 , Figure 5 and Figure 6The separation structure is installed inside the storage tank 5 and the filter cartridge 7, and is used to quickly inject the supernatant after sedimentation into the filter cartridge 7 for further filtration. The separation structure mainly includes components such as a fixed cylinder 21, a sliding cylinder 22, a float plate 23, a liquid inlet 24, a connecting plate 25, a baffle 26, a horizontal plate 27, a magnet III 28, and a vacuum pump 9. The fixed cylinder 21 is fixed to the bottom inner wall of the storage tank 5, and the connecting hose 6 is connected to the fixed cylinder 21 to guide the supernatant through the fixed cylinder 21 into the connecting hose 6. The bottom end of the fixed cylinder 21 rotates through the rotating disk 11 to ensure that the rotation of the rotating disk 11 does not affect the normal operation of the fixed cylinder 21. The sliding cylinder 22 is sealed and slidably connected inside the fixed cylinder 21, and the float plate 23 is fixedly sleeved on the outer wall of the sliding cylinder 22. The float plate 23 is made of lightweight plastic material and has good buoyancy, which is greater than the total weight of the sliding cylinder 22, the connecting plate 25, the horizontal plate 27, and the baffle 26. A float plate 23 floats on the surface of the supernatant and moves up and down with changes in the supernatant level. Two inlets 24 located below the float plate 23 are provided inside the sliding cylinder 22 for injecting the supernatant into the sliding cylinder 22. A horizontal plate 27 is fixed inside the sliding cylinder 22, and a connecting plate 25 located above the horizontal plate 27 is slidably connected inside the sliding cylinder 22. Baffles 26 are fixed on both sides of the bottom of the connecting plate 25 to block the inlets 24. When the baffles 26 block the inlets 24, sedimentation is prevented from entering the sliding cylinder 22. Magnets III 28 are fixedly embedded at the bottom of the connecting plate 25 and the top of the horizontal plate 27. When the two magnets III 28 are energized, they generate a repulsive force, which pushes the connecting plate 25 and the baffles 26 upwards, releasing the blockage of the inlets 24. Magnets III 28 are electromagnets, and the generation and disappearance of magnetism are controlled by controlling the on / off state of the current.

[0077] Reference Figure 3 A filter membrane 8 is fixed inside the filter cartridge 7, and the connection between the filter cartridge 7 and the connecting hose 6 is located above the filter membrane 8. This allows the supernatant to be injected onto the filter membrane 8, facilitating filtration of the supernatant by the filter membrane 8. A vacuum pump 9 is fixed to the bottom of the partition 4. The air inlet of the vacuum pump 9 is connected to the filter cartridge 7 via a pipe, and this connection is located below the filter membrane 8. This creates a negative pressure in the space below the filter membrane 8, accelerating the filtration of the supernatant by the filter membrane 8. A drain pipe I 10 is fixedly connected to the bottom of the filter cartridge 7, used to discharge the filtered sample into the corresponding reagent bottle 32.

[0078] In actual operation, when the supernatant after sedimentation needs to be filtered, the two magnets III 28 are energized, generating a repulsive force between them and pushing the connecting plate 25 and the baffle 26 upward, thus releasing the blockage of the inlet 24 by the baffle 26. Due to the buoyancy of the float plate 23, the sliding cylinder 22 is suspended in the storage tank 5, and the inlet 24 is located in the supernatant. At this time, the supernatant in the storage tank 5 enters the filter cartridge 7 through the sliding cylinder 22, the fixed cylinder 21, and the connecting hose 6. Simultaneously, the vacuum pump 9 extracts the air from the filter cartridge 7 through the pipeline, creating a negative pressure state inside the filter cartridge 7. This negative pressure can draw the supernatant in the storage tank 5 to the top of the filter membrane 8 inside the filter cartridge 7. With the operation of the vacuum pump 9, the negative pressure inside the filter cartridge 7 can quickly pass the supernatant above the filter membrane 8 through the filter membrane 8, completing the sample filtration operation.

[0079] Reference Figure 2 , Figure 7 and Figure 8 The detection structure is housed within the casing 1, enabling the two probes 37 to clean alternately and test multiple samples for accurate detection. The detection structure mainly includes a conveyor belt 29, placement cylinder I 30, placement cylinder II 31, reagent bottle 32, arc-shaped plate 33, electric push rod 35, rotating plate 36, probe 37, spur gear 38, rack 39, L-shaped bracket 40, push plate 41, base 42, guide rod 43, spring 44, and cleaning cylinder 45, among other components.

[0080] Reference Figure 2 and Figure 7 The conveyor belt 29 is mounted on the inner wall of the bottom of the housing 1 via a frame. Multiple placement cylinders I 30 and II 31 are fixed to the outer wall of the conveyor belt 29, and these cylinders are arranged alternately. Each placement cylinder I 30 and placement cylinder II 31 contains a reagent bottle 32 for holding filtered samples. Rubber rings are fixed to the inner walls of each placement cylinder I 30 and placement cylinder II 31 to increase the friction between the reagent bottle 32 and the cylinders, ensuring the reagent bottle 32 is stably placed within them and preventing it from shaking or falling during transport.

[0081] Reference Figure 2 , Figure 7 and Figure 8Multiple arc-shaped plates 33 are fixed to one side of the corresponding placement cylinder II 31. The shape of the arc-shaped plates 33 is adapted to the contour of the placement cylinder II 31 and is used to cooperate with the push plate 41. An electric push rod 35 is rotatably connected to the bottom of the partition 4. The electric push rod 35 is driven by a stepper motor and has precise position control capability. A rotating plate 36 is fixed to the output shaft of the electric push rod 35. Two probes 37 are fixed through the rotating plate 36 and are located at both ends of the rotating plate 36. A spur gear 38 is fixed to the outer wall of the electric push rod 35 by bolts. A rack 39 that meshes with the spur gear 38 is slidably connected to the bottom of the partition 4. An L-shaped bracket 40 is fixed to one side of the rack 39. A push plate 41 is fixed to the bottom of the L-shaped bracket 40 and cooperates with the arc-shaped plates 33. The push plate 41 is used to drive the electric push rod 35 to rotate through the rack 39 and the spur gear 38 to complete the position swap of the two probes 37.

[0082] Reference Figure 8 A base 42 is fixed to the bottom of the partition 4. A guide rod 43 slides through the base 42, and one end of the guide rod 43 is fixedly connected to the L-shaped bracket 40 to allow the L-shaped bracket 40 to slide smoothly. A spring 44 is fixed between the base 42 and the L-shaped bracket 40 via a spring seat. The spring 44 has the following parameters: wire diameter 1-3 mm, outer diameter 10-20 mm, free length 50-100 mm, initial tension 5-20 N, and maximum working tensile length 150-250 mm. The spring 44 is sleeved on the outer wall of the guide rod 43 to drive the L-shaped bracket 40 and rack 39 to reset.

[0083] In actual operation, the conveyor belt 29 sequentially transports the placement cylinders I 30 and II 31, containing reagent bottles 32, to designated positions. When the arc-shaped plate 33 on one side of placement cylinder II 31 engages with the push plate 41, it pushes the rack 39 to move. The rack 39 meshes with the spur gear 38, driving the electric push rod 35 to rotate, thereby completing the position swap of the two probes 37. At this time, one clean probe 37 is inserted into the reagent bottle 32 to test the sample, while the other probe 37 with the sample attached is placed in the cleaning cylinder 45. Pure water from outside cleans the probe 37 in the cleaning cylinder 45 through the liquid storage ring 46 and the liquid outlet 47 (the water pressure can be 0.05-0.1 MPa), preventing the water sample attached to the probe 37 from affecting subsequent tests. After the arc plate 33 disengages from the push plate 41, the L-shaped bracket 40 and the rack 39 are reset under the action of the spring 44, and the two probes 37 are swapped again. Thus, the cleaned probes 37 can detect the sample in the reagent bottle 32 placed in the placement cylinder I 30, so that the two probes 37 can be used alternately to ensure that the two probes 37 are in a clean state for detection and to ensure the accuracy of the detection.

[0084] Reference Figure 3A drain pipe II 34 is fixed on the side of the storage tank 5 away from the filter cartridge 7, and the drain pipe II 34 extends to one side of the shell 1 to discharge the sample from the storage tank 5. The outer walls of the drain pipe II 34, the connecting hose 6, and the drain pipe I 10 are all equipped with solenoid valves. The solenoid valves are controlled to open and close by the control system to control the flow of the sample.

[0085] A collection box 49 slides through the side of the housing 1 near the electric push rod 35, and is located below the conveyor belt 29. This collection box 49 collects the spilled sample from the reagent bottles 32 as they are transported downwards by the conveyor belt 29, facilitating subsequent unified disposal. A cleaning cylinder 45 is located above the collection box 49, allowing purified water to flow into it after cleaning. A rotating door 3 is rotatably connected to one side of the housing 1, allowing for easy access to the internal components for maintenance and repair.

[0086] In another embodiment: Refer to Figure 9 An improvement based on Example 1: Refer to Figure 9 A cleaning cylinder 45 is fixedly installed inside the housing 1, located on one side of the conveyor belt 29, and is used to clean the probe 37. A liquid storage ring 46 is fixedly installed on the inner wall of the cleaning cylinder 45, and the liquid storage ring 46 has multiple outlets 47 for spraying pure water onto the probe 37 located inside the cleaning cylinder 45. A liquid injection pipe is fixedly connected to one side of the liquid storage ring 46, and the liquid injection pipe extends to one side of the housing 1 and is connected to an external pure water source for injecting pure water into the liquid storage ring 46. A discharge pipe 48 is fixedly connected to the bottom of the cleaning cylinder 45, and the discharge pipe 48 cooperates with a collection box 49 for collecting pure water.

[0087] A water quality testing and analysis instrument and its usage method, comprising the following steps:

[0088] S1. The collected water sample to be tested is injected into the storage tank 5. In order to accelerate the precipitation of impurities in the sample, flocculant is added to the storage tank 5 as needed. Then, the cover plate 2 is closed. When the cover plate 2 is closed with the shell 1, it pushes the lifting plate 20 to move down. The lifting plate 20 pulls the cable 18. The cable 18 drives the annular disk 14 to rotate. The disc spring 17 starts to be in the storage state. The annular disk 14 drives the rotating disk 11 to rotate through the magnetic attraction between magnet I 13 and magnet II 15. The rotating disk 11 stirs the sample in the storage tank 5 through the stirring blade 12, so that the flocculant dissolves quickly in the sample.

[0089] S2. After the sample in the storage tank 5 precipitates, the supernatant in the storage tank 5 is pumped into the filter cartridge 7. Specifically, when the two magnets III 28 are energized, they generate a repulsive force and push the connecting plate 25 and the baffle 26 upward, releasing the blockage of the inlet 24 by the baffle 26. Due to the buoyancy of the float plate 23, the sliding cylinder 22 is suspended in the storage tank 5, and the inlet 24 is located in the supernatant. At this time, the supernatant in the storage tank 5 enters the filter cartridge 7 through the sliding cylinder 22, the fixed cylinder 21 and the connecting hose 6. The vacuum pump 9 extracts the air in the filter cartridge 7 through the pipeline, making the filter cartridge 7 negative pressure. At this time, the negative pressure can pump the supernatant in the storage tank 5 to the filter cartridge 7 above the filter membrane 8.

[0090] S3. With the operation of vacuum pump 9, the negative pressure in filter cartridge 7 can quickly filter the supernatant above filter membrane 8 through filter membrane 8 to complete the sample filtration. Then, conveyor belt 29 transports reagent bottle 32 through placement cylinder I 30 and placement cylinder II 31. When reagent bottle 32 is below drain pipe I 10, opening the solenoid valve on drain pipe I 10 can discharge the filtered sample in filter cartridge 7 into reagent bottle 32. Then, through the operation of conveyor belt 29, the sample can be placed into multiple reagent bottles 32. By testing multiple samples, accurate water quality information can be obtained.

[0091] S4. The reagent bottle 32 is conveyed by the conveyor belt 29 through the placement cylinders I 30 and II 31. When the reagent bottle 32 in the placement cylinder I 30 moves to below the corresponding probe 37, the output shaft of the electric push rod 35 drives the probe 37 to move down through the rotating plate 36 until the corresponding probe 37 extends into the reagent bottle 32 to detect the sample. After the detection is completed, the electric push rod 35 drives the probe 37 to move up and reset. The conveyor belt 29 continues to convey the reagent bottle 32. When the reagent bottle 32 moves to below the conveyor belt 29, the sample inside is poured into the collection box 49 for easy discharge later. When the reagent bottle 32 in the placement cylinder II 31 is below the corresponding probe 37, the arc plate 33 on one side of the placement cylinder II 31 pushes the L-shaped bracket 40 to move outward through the push plate 41. When the spring 44 is compressed, the L-shaped bracket 40 drives the electric push rod 35 and the rotating plate 36 to rotate 180° through the cooperation of the rack 39 and the spur gear 38, completing the swapping of the two probes 37. The unused probe 37 is located above the reagent bottle 32, while the probe 37 that was previously tested is located above the cleaning cylinder 45. When the electric push rod 35 pushes the two probes 37 down, the two probes 37 perform sample testing and cleaning operations respectively, so that the probes 37 can be reused after cleaning, ensuring the accuracy of the test. When the conveyor belt 29 continues to run, the arc plate 33 on one side of the placement cylinder II 31 pushes the push plate 41. The push plate 41 and the rack 39 are reset under the action of the spring 44, and the two probes 37 are swapped again. The cleaned probes 37 can be tested again.

[0092] S5. When the rotating plate 36 drives the two probes 37 to extend into the reagent bottle 32 and the cleaning cylinder 45 respectively, the pure water from the outside cleans the probes 37 located in the cleaning cylinder 45 through the liquid storage ring 46 and the liquid outlet 47, so as to avoid the water samples attached to the probes 37 from affecting the subsequent detection.

[0093] It should be noted that the working principles, circuit connection methods, and selection criteria of components such as magnet assembly III 28, vacuum pump 9, electric actuator 35, multi-parameter water quality analyzer 50, and probe 37 are all conventional techniques in this field. Specific implementation methods of the aforementioned components (including but not limited to model selection, installation methods, and control logic) can be implemented by those skilled in the art using conventional techniques according to actual application scenarios, and will not be described in detail here.

[0094] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0095] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water quality testing and analysis instrument, characterized in that, include: The housing (1) has a cover plate (2) rotatably connected to one side of it; A partition (4) is fixed inside the housing (1), and a multi-parameter water quality analyzer (50) is fixed on its top. Storage tank (5), fixedly penetrating the partition (4), is used to hold water samples; The filter cartridge (7) is fixed to the bottom of the partition (4), and the filter membrane (8) is fixed inside it. Connect the hose (6) to connect the bottom of the liquid storage tank (5) to the filter cartridge (7); The drive structure, located in the partition (4) and the storage tank (5), includes a rotating disk (11), stirring blades (12), magnet I (13), annular disk (14), magnet II (15), cable (18), guide wheel (19) and lifting plate (20). The separation structure is located in the liquid storage tank (5) and the filter cartridge (7), including a fixed cylinder (21), a sliding cylinder (22), a float plate (23), a liquid inlet (24), a connecting plate (25), a baffle (26), a horizontal plate (27) and a magnet III (28). A vacuum pump (9) is fixed to the bottom of the partition plate (4) and connected to the bottom of the filter cartridge (7) through a pipe; Two probes (37) are located below the partition (4) and are electrically connected to the multi-parameter water quality analyzer (50); The detection structure includes a conveyor belt (29), alternating placement cylinders I (30) and II (31), reagent bottles (32), cleaning cylinders (45), electric push rods (35), rotating plates (36), spur gears (38), racks (39), L-shaped brackets (40), push plates (41), bases (42), guide rods (43), and springs (44). In the drive structure, the rotating disk (11) is rotatably connected to the bottom inner wall of the liquid storage tank (5), the stirring blade (12) is fixed at its top, and the magnet I (13) is embedded at its bottom. The annular disk (14) is rotatably connected to the bottom of the liquid storage tank (5), and the magnet II (15) is embedded in its top. The magnet II (15) and the magnet I (13) are magnetically attracted to each other. The cable (18) is wound around the outer wall of the annular disk (14), and one end of it is fixed to the lifting plate (20) via the guide wheel (19). The lifting plate (20) slides through the partition (4) and cooperates with the cover plate (2). When the cover plate (2) is closed, it pushes the lifting plate (20) to move down, the cable (18) drives the annular disk (14) to rotate, and the magnet II (15) drives the rotating disk (11) to rotate through magnetic attraction. The placement cylinder II (31) has an arc-shaped plate (33) fixed on one side; the electric push rod (35) is rotatably connected to the bottom of the partition (4), and its output shaft is fixed to the rotating plate (36); the two probes (37) pass through both ends of the rotating plate (36); the spur gear (38) is fixed to the outer wall of the electric push rod (35); the rack (39) is slidably connected to the bottom of the partition (4) and meshes with the spur gear (38); the L-shaped bracket (40) is fixed to one side of the rack (39), and its bottom end is fixed to the push plate (41); the push plate (41) cooperates with the arc-shaped plate (33); the guide rod (43) slides through the base (42) and is fixedly connected to the L-shaped bracket (40); the spring (44) is sleeved on the outer wall of the guide rod (43) and connects the base (42) and the L-shaped bracket (40). The arc plate (33) pushes the push plate (41) to drive the rack (39) to move, and the spur gear (38) drives the electric push rod (35) to rotate to change the position of the two probes (37).

2. The water quality testing and analysis instrument according to claim 1, characterized in that, In the separation structure, the fixed cylinder (21) is fixed to the bottom inner wall of the liquid storage tank (5) and communicates with the connecting hose (6), and its bottom end rotates through the rotating disk (11); the sliding cylinder (22) is sealed and slidably connected to the fixed cylinder (21), and the float plate (23) is fixedly sleeved on its outer wall; the liquid inlet (24) is located in the sliding cylinder (22) and below the float plate (23); the horizontal plate (27) is fixed in the sliding cylinder (22), and the connecting plate (25) is slidably connected to the top of the horizontal plate (27), and the baffle (26) is fixed on both sides of its bottom; the magnet III (28) is respectively embedded in the bottom of the connecting plate (25) and the top of the horizontal plate (27); The buoyancy of the float (23) is greater than the total weight of the sliding cylinder (22), and the magnet III (28) generates a repulsive force when energized to push the baffle (26) to release the blockage of the liquid inlet (24).

3. The water quality testing and analysis instrument according to claim 2, characterized in that, It also includes a fixing ring (16), which is fixed to the bottom of the liquid storage tank (5) and located inside the annular disk (14); and a disc spring (17), which is sleeved between the fixing ring (16) and the annular disk (14), with one end fixedly connected to the outer wall of the fixing ring (16) and the other end fixedly connected to the inner wall of the annular disk (14). The disc spring (17) drives the annular disk (14) to reset after it rotates.

4. The water quality testing and analysis instrument according to claim 3, characterized in that, It also includes a drain pipe II (34), which is fixed to the side of the storage tank (5) away from the filter cartridge (7) and extends to the outside of the housing (1); Among them, the outer walls of the drain pipe II (34), the connecting hose (6) and the drain pipe I (10) are all equipped with solenoid valves.

5. A water quality testing and analysis instrument according to claim 4, characterized in that, It also includes a collection box (49) that slides through the housing (1) on the side near the electric push rod (35); The cleaning cylinder (45) is located above the collection box (49).

6. A water quality testing and analysis instrument according to claim 5, characterized in that, Both placement cylinder I (30) and placement cylinder II (31) have rubber rings fixed to their inner walls.

7. A water quality testing and analysis instrument according to claim 6, characterized in that, The cleaning cylinder (45) has a liquid storage ring (46) fixed on its inner wall. The liquid storage ring (46) is provided with multiple liquid outlets (47) and is connected to the liquid injection pipe. Pure water is sprayed through the outlet (47) onto the probe (37) located inside the cleaning cylinder (45).

8. A method of using a water quality testing and analysis instrument, applied to the water quality testing and analysis instrument as described in claim 7, characterized in that, Includes the following steps: S1, Flocculation and Stirring: After injecting the sample and flocculant into the storage tank (5), close the cover plate (2); when the cover plate (2) is closed, push the lifting plate (20) down, drive the ring disk (14) to rotate through the cable (18), and use the magnetic attraction of magnet I (13) and magnet II (15) to drive the rotating disk (11) to drive the stirring blade (12) to stir the sample; S2, Extraction and Filtration: After sedimentation, the electromagnet III (28) generates a repulsive force to push the baffle (26) upward and open the liquid inlet (24); the buoyancy of the float plate (23) is used to suspend the sliding cylinder (22) and the liquid inlet (24) is located in the supernatant; the vacuum pump (9) is started to generate negative pressure in the filter cylinder (7), and the supernatant is sucked into the filter cylinder (7) through the sliding cylinder (22), the fixed cylinder (21), and the connecting hose (6) and filtered through the filter membrane (8); S3, Sample dispensing: The reagent bottle (32) is conveyed through the conveyor belt (29) and placement tube I (30) and placement tube II (31); when the reagent bottle (32) is below the drain tube I (10), its solenoid valve is opened to discharge the filtered sample into the reagent bottle (32). S4. Detection and cleaning: When the reagent bottle (32) in the placement tube I (30) is moved below the probe (37), the electric push rod (35) is controlled to push the probe (37) down to detect the sample and then reset it; When the reagent bottle (32) in the placement cylinder II (31) is moved to the position below the probe (37), the arc plate (33) of the conveyor belt (29) pushes the push plate (41), which drives the electric push rod (35) and the rotating plate (36) to rotate 180° through the rack (39) and spur gear (38), switching the positions of the two probes (37); The electric push rod (35) is controlled to push the probe (37) down, so that one probe (37) detects the sample in the reagent bottle (32), while the other probe (37) enters the cleaning tube (45), and pure water introduced by the liquid storage ring (46) cleans it through the liquid outlet (47); S5. Reset and Sample Removal: The conveyor belt (29) moves to make the arc plate (33) disengage from the push plate (41). The push plate (41) is reset under the action of the spring (44) and drives the probe (37) to rotate 180° in the opposite direction to reset. The reagent bottle (32) after testing pours the sample into the collection box (49) at the end of the conveyor belt (29).

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