CN114324812A

CN114324812A - Water quality heavy metal detection device and method

Info

Publication number: CN114324812A
Application number: CN202210237211.1A
Authority: CN
Inventors: 张勇; 丁月; 孙美慧; 张磊; 戴光玉
Original assignee: Anhui Haifeng Analysis And Testing Technology Co ltd
Current assignee: Anhui Haifeng Analysis And Testing Technology Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-04-12
Anticipated expiration: 2042-03-11
Also published as: CN114324812B

Abstract

The invention discloses a water quality heavy metal detection device which comprises a base, wherein the upper end surface of the base is fixedly connected with a vertical plate, and the base on two sides of the vertical plate is provided with a water storage tank and a water quality detector; a method for detecting heavy metals in water comprises the following steps: s1: placing a sample; s2: carrying out primary detection; s3: secondary detection; s4: and (5) cleaning. According to the invention, a plurality of test tubes are sequentially placed on the placing rack, the driving mechanism drives the sample injection assembly to rotate to a proper position, the hydraulic rod drives the base platform and the placing rack to ascend, so that one end of the sample injection tube enters the test tube, the water quality detector is started, the water quality sample is extracted to perform water quality detection, after the detection is completed, the hydraulic rod drives the base platform and the placing rack to descend, the driving mechanism drives the placing rack to rotate, so that the next test tube to be detected enters a region to be detected, the operation flow is repeated to detect the next sample, drainage and water injection are not required to be frequently performed, and the detection efficiency is improved.

Description

Water quality heavy metal detection device and method

Technical Field

The invention relates to the technical field of water quality detection, in particular to a water quality heavy metal detection device and a water quality heavy metal detection method.

Background

Water is a source of life and is a resource on which people rely for survival, so that water conservation and water quality analysis are particularly important, water quality comprises drinking water, surface water, sewage and the like, corresponding water quality detection comprises drinking water detection, surface water detection, sewage detection and the like, whether water is polluted or not can be judged through water quality detection, and the method has a close and inseparable relationship with the health and the environment of people.

The discovery in the in-service use, the present general heavy metal water quality testing device most all adopts the container of single quality of water sample of placing, need pour into new sample into again after the remaining sample of clearance container at first when detecting different water samples or carrying out a lot of to same water sample and detect to get rid of the sample and remain the influence to new sample testing result, operation process is comparatively loaded down with trivial details, leads to detection efficiency to reduce.

Disclosure of Invention

The invention aims to: in order to solve the problems, a water quality heavy metal detection device and a method thereof are provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a water quality heavy metal detection device comprises a base, wherein a vertical plate is fixedly connected to the upper end face of the base, water storage tanks and a water quality detector are arranged on the base on two sides of the vertical plate, a hydraulic rod is fixedly connected to the base between the vertical plate and the water storage tanks, the upper end face of the hydraulic rod is fixedly connected with a base platform, a sample injection assembly is arranged on the vertical plate, an intermittent mechanism matched with the sample injection assembly is arranged on the base platform, and a driving mechanism for driving the intermittent mechanism and the sample injection assembly to synchronously rotate is arranged on the base;

the intermittent mechanism comprises a connecting rod rotatably connected with the base platform, the outer side wall of the connecting rod is fixedly connected with a first toothed ring, the outer side wall of the connecting rod is rotatably connected with a lantern ring, a first torsion spring is sleeved on the outer side of the connecting rod, two ends of the first torsion spring are respectively and fixedly connected with the connecting rod and the lantern ring, the upper end face of the lantern ring is fixedly connected with a placing rack through a connecting strip, a test tube is placed on the placing rack, the outer side of the connecting strip is fixedly connected with a second toothed ring, the upper end face of the lantern ring is fixedly connected with a limiting column, the outer side wall of the connecting rod is fixedly connected with a shifting block, and a limiting component matched with the limiting column and the shifting block is arranged on the base platform;

the limiting assembly comprises a fixing seat fixedly connected with the upper end face of the base platform, the upper end face of the fixing seat is rotatably connected with a hook through a rotating rod, the open end of the hook is matched with the limiting column, the lower end of the hook is fixedly connected with an upright column matched with the shifting block, a second torsion spring is sleeved on the outer side of the rotating rod, and two ends of the second torsion spring are respectively fixedly connected with the hook and the fixing seat;

advance kind subassembly includes the second carousel of being connected with the riser rotation, it has advanced appearance pipe to run through on the second carousel, the riser is close to test tube one side fixedly connected with second support frame, it is connected with first carousel to rotate on the second support frame, first carousel outside fixedly connected with third ring gear, the third ring gear is connected with third gear engagement, test tube one side fixedly connected with third support frame is kept away from to the riser, it is connected with the third carousel to rotate on the third support frame, the water quality testing appearance upper end is equipped with the introduction port, advance appearance pipe one end and run through first carousel and extend to the test tube top, the other end runs through the third carousel and extends to the introduction port top.

Preferably, the driving mechanism comprises a driving piece fixedly connected with the upper end face of the base, the output end of the driving piece is fixedly connected with a first gear, the first gear is meshed with a first gear ring, one side of the vertical plate is fixedly connected with a first support frame, the first support frame is connected with a connecting shaft in a rotating mode, the upper end and the lower end of the connecting shaft are respectively fixedly connected with a third gear and a second gear which are coaxially arranged, and the second gear is meshed with a second gear ring.

Preferably, be equipped with the PLC controller with hydraulic stem and driving piece electric connection on the base, be equipped with on the riser with advance appearance pipe matched with wiper mechanism, wiper mechanism is including seting up the logical groove on the riser, it has the linking arm to lead to sliding connection in the groove, the linking arm passes through bracing piece and base platform fixed connection, linking arm one end extends to the below of first connecting pipe and the first interface of fixedly connected with, first interface passes through hose and water storage box intercommunication, the linking arm other end extends to the below of second connecting pipe and fixedly connected with second interface, second interface lower extreme intercommunication has the discharge pipe.

Preferably, set up a plurality of standing grooves that are used for placing the test tube on the rack, it is a plurality of the standing groove is annular equidistance distribution about the axle center of rack, the quantity of advance appearance pipe is the same with the quantity of standing groove, all set up on first carousel, second carousel and the third carousel with advance appearance pipe matched with through-hole, it is a plurality of the through-hole is annular equidistance distribution about the axle center of first carousel, second carousel and third carousel respectively.

Preferably, the sampling pipe includes first connecting pipe and second connecting pipe, second connecting pipe one end is pegged graft in the inside of first connecting pipe one end, first connecting pipe and second connecting pipe are the L type pipe, first carousel and second carousel are run through respectively to the both ends of first connecting pipe, second carousel and third carousel are run through respectively to the both ends of second connecting pipe, first connecting pipe and second connecting pipe are close to one end sliding connection each other, the sampling pipe is "Contraband" type structure.

Preferably, the thickness of the first gear ring and the second gear ring is larger than that of the first gear and the second gear, and the driving member is a servo motor.

Preferably, the spacing post is equipped with a plurality ofly, and is a plurality of spacing post is annular equidistance distribution about the axle center of lantern ring, the quantity of spacing post is the same with the quantity of advance appearance pipe.

Preferably, the first torsion spring and the second torsion spring are both always in a compressed state.

Preferably, a sealing member is arranged in each of the first interface and the second interface.

A method for detecting heavy metals in water comprises the following steps:

s1: placing a sample: the base platform and the placing rack are driven to descend by the hydraulic rod, and a plurality of test tubes filled with water quality samples are sequentially placed on the placing rack;

s2: primary detection: the driving mechanism drives the sample introduction assembly to rotate to a proper position, the hydraulic rod drives the base platform and the placing rack to ascend, one end of the sample introduction pipe enters the test tube, the water quality detector is started, and a water quality sample is extracted to enter the water quality detector through the sample introduction pipe and the sample introduction port for water quality heavy metal detection;

s3: and (3) secondary detection: after the detection is finished, the hydraulic rod drives the bottom platform and the placing rack to descend, the driving mechanism drives the placing rack to rotate, so that the next test tube to be detected enters the area to be detected, meanwhile, the driving mechanism drives the sample feeding assembly to rotate to the corresponding position, and the operation flow of S2 is repeated to detect the next sample;

s4: cleaning: the connecting arm is driven to move upwards while the base platform is driven to move by the hydraulic rod, so that the first interface and the second interface are respectively combined with two ends of the sampling pipe to be cleaned, the sampling pipe is cleaned by pumping water of the water storage tank to be used, and the cleaned sewage is discharged by the discharge pipe through the second interface.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. when different water samples or the same water sample needs to be detected for multiple times, multiple sample feeding pipes are arranged, the different water samples or the same water sample is respectively put into a plurality of test tubes, the test tubes are sequentially placed on a placing frame, a driving mechanism drives a sample feeding assembly to rotate to a proper position, a hydraulic rod drives a base and the placing frame to ascend, one end of each sample feeding pipe enters the test tube, a water quality detector is started, a water quality sample is extracted to enter the water quality detector through the sample feeding pipes and a sample inlet for water quality heavy metal detection, after the detection is finished, the base and the placing frame are driven to descend by the hydraulic rod, the placing frame is driven to rotate by the driving mechanism, the next test tube to be detected enters a region to be detected, the driving mechanism drives the sample feeding assembly to rotate to a corresponding position, and the operation flow is repeated for detecting the next sample, therefore, the drainage and water injection are not required to be frequently carried out when different water samples or the same water sample is detected for multiple times, the operation steps are simplified, and the efficiency of water quality detection is greatly improved.

2. This application is through being equipped with wiper mechanism, after the advance appearance pipe that accomplishes water quality testing changes out, drive the linking arm by the hydraulic stem when driving the base frame and remove and shift up, make first interface and second interface combine with the both ends that need abluent advance appearance pipe respectively, water through the extraction water storage box washs advance appearance pipe, in order to wait to use, sewage after the washing is discharged by the discharge pipe through the second interface, make when going on examining many times to different water samples or to same water sample, the water sample that has avoided preceding detection remains and causes the influence to next water quality testing, detection device's the degree of accuracy has been improved, make simultaneously advance appearance pipe can reuse in the short time after carrying out water quality testing, the recycling in the short time of advance appearance pipe has been realized, detection device's detection efficiency has further been improved.

Drawings

FIG. 1 is a schematic diagram illustrating an overall structure of a detection apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of another angle of the overall structure of the detecting device provided by the embodiment of the invention;

FIG. 3 is a schematic diagram illustrating structural cooperation of a driving mechanism, an intermittent mechanism and a sample feeding assembly provided in an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the structure of the driving mechanism, the intermittent mechanism and the sample feeding assembly according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of an intermittent mechanism provided according to an embodiment of the present invention;

FIG. 6 illustrates an exploded view of an intermittent mechanism configuration provided in accordance with an embodiment of the present invention;

FIG. 7 illustrates an enlarged view of the structure at A in FIG. 6, provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic diagram of a cleaning mechanism provided in accordance with an embodiment of the present invention;

fig. 9 shows a schematic diagram of a sample injection tube structure provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a base; 2. a vertical plate; 3. a water storage tank; 4. a water quality detector; 5. a hydraulic lever; 6. a base table; 7. a connecting rod; 8. a collar; 9. a first torsion spring; 10. a limiting column; 11. shifting blocks; 12. a fixed seat; 13. a rotating rod; 14. hooking; 15. a second torsion spring; 16. a column; 17. a first ring gear; 18. a connecting strip; 19. placing a rack; 20. a test tube; 21. a second ring gear; 22. a drive member; 23. a first gear; 24. a first support frame; 25. a connecting shaft; 26. a second gear; 27. a third gear; 28. a second support frame; 29. a first turntable; 30. a third ring gear; 31. a second turntable; 32. a third support frame; 33. a third turntable; 34. a sample inlet pipe; 3401. a first connecting pipe; 3402. a second connecting pipe; 35. a sample inlet; 36. a PLC controller; 37. a through groove; 38. a connecting arm; 39. a first interface; 40. a second interface; 41. a hose; 42. a discharge pipe; 43. a support rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution:

a water quality heavy metal detection device comprises a base 1, wherein the upper end face of the base 1 is fixedly connected with a vertical plate 2, the base 1 on two sides of the vertical plate 2 is provided with a water storage tank 3 and a water quality detector 4, a hydraulic rod 5 is fixedly connected on the base 1 between the vertical plate 2 and the water storage tank 3, the upper end face of the hydraulic rod 5 is fixedly connected with a bottom platform 6, the vertical plate 2 is provided with a sample introduction assembly, the bottom platform 6 is provided with an intermittent mechanism matched with the sample introduction assembly, and the base 1 is provided with a driving mechanism for driving the intermittent mechanism and the sample introduction assembly to synchronously rotate; the intermittent mechanism comprises a connecting rod 7 rotatably connected with a base 6, the outer side wall of the connecting rod 7 is fixedly connected with a first toothed ring 17, the outer side wall of the connecting rod 7 is rotatably connected with a lantern ring 8, a first torsion spring 9 is sleeved on the outer side of the connecting rod 7, two ends of the first torsion spring 9 are respectively fixedly connected with the connecting rod 7 and the lantern ring 8, the upper end face of the lantern ring 8 is fixedly connected with a placing frame 19 through a connecting strip 18, a test tube 20 is placed on the placing frame 19, the outer side of the connecting strip 18 is fixedly connected with a second toothed ring 21, the upper end face of the lantern ring 8 is fixedly connected with a limiting column 10, the outer side wall of the connecting rod 7 is fixedly connected with a shifting block 11, and the base 6 is provided with a limiting component matched with the limiting column 10 and the shifting block 11; the limiting assembly comprises a fixed seat 12 fixedly connected with the upper end face of the base table 6, the upper end face of the fixed seat 12 is rotatably connected with a hook 14 through a rotating rod 13, the open end of the hook 14 is matched with the limiting column 10, the lower end of the hook 14 is fixedly connected with an upright post 16 matched with the shifting block 11, a second torsion spring 15 is sleeved on the outer side of the rotating rod 13, and two ends of the second torsion spring 15 are respectively fixedly connected with the hook 14 and the fixed seat 12; advance kind subassembly include with riser 2 rotate the second carousel 31 of being connected, it has into appearance pipe 34 to run through on the second carousel 31, riser 2 is close to test tube 20 one side fixedly connected with second support frame 28, it is connected with first carousel 29 to rotate on the second support frame 28, first carousel 29 outside fixedly connected with third ring gear 30, third ring gear 30 is connected with the meshing of third gear 27, 20 one side fixedly connected with third support frame 32 is kept away from to riser 2, it is connected with third carousel 33 to rotate on the third support frame 32, water quality testing appearance 4 upper end is equipped with introduction port 35, it runs through first carousel 29 and extends to test tube 20 top to advance appearance pipe 34 one end, the other end runs through third carousel 33 and extends to introduction port 35 top. By arranging a plurality of sample feeding pipes 34, when different water samples or the same water sample needs to be detected for a plurality of times, a plurality of different water samples or the same water sample are arranged and respectively put into a plurality of test tubes 20, the plurality of test tubes 20 are sequentially placed on a placing frame 19, a driving mechanism drives a sample feeding assembly to rotate to a proper position, a hydraulic rod 5 drives a base 6 and the placing frame 19 to ascend, one end of the sample feeding pipe 34 enters the test tube 20, a water quality detector 4 is started, a water quality sample is extracted to enter the water quality detector 4 through the sample feeding pipe 34 and a sample inlet 35 for water quality heavy metal detection, after the detection is finished, the hydraulic rod 5 drives the base 6 and the placing frame 19 to descend, the driving mechanism drives the placing frame 19 to rotate, the next test tube 20 to be detected enters a region to be detected, and simultaneously the driving mechanism drives the sample feeding assembly to rotate to a corresponding position, and the operation flow is repeated to detect the next sample, so that the frequent drainage and water injection are not needed when different water samples or the same water sample is detected for multiple times, the operation steps are simplified, and the efficiency of water quality detection is greatly improved.

Specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, the driving mechanism includes a driving member 22 fixedly connected to the upper end surface of the base 1, an output end of the driving member 22 is fixedly connected to a first gear 23, the first gear 23 is meshed with the first toothed ring 17, one side of the vertical plate 2 is fixedly connected to a first support frame 24, the first support frame 24 is rotatably connected to a connecting shaft 25, upper and lower ends of the connecting shaft 25 are respectively fixedly connected to a third gear 27 and a second gear 26 which are coaxially arranged, and the second gear 26 is meshed with the second toothed ring 21. Be equipped with on base 1 with hydraulic stem 5 and driving piece 22 electric connection's PLC controller 36, be equipped with on the riser 2 with advance appearance pipe 34 matched with wiper mechanism, wiper mechanism is including seting up logical groove 37 on riser 2, it has linking arm 38 to lead to sliding connection in groove 37, linking arm 38 passes through bracing piece 43 and sill 6 fixed connection, linking arm 38 one end extends to the below of first connecting pipe 3401 and the first interface 39 of fixedly connected with, first interface 39 passes through hose 41 and water storage box 3 intercommunication, the linking arm 38 other end extends to the below of second connecting pipe 3402 and fixedly connected with second interface 40, the intercommunication of second interface 40 lower extreme has discharge pipe 42. By arranging the cleaning mechanism, after the sample inlet pipe 34 for completing water quality detection is rotated out, the hydraulic rod 5 drives the base 6 to move and simultaneously drives the connecting arm 38 to move upwards, so that the first interface 39 and the second interface 40 are respectively combined with two ends of the sample inlet pipe 34 to be cleaned, the sample inlet pipe 34 is cleaned by extracting water from the water storage tank 3 for use, the cleaned sewage is discharged from the discharge pipe 42 through the second interface 40, so that when different water samples or the same water sample is detected for multiple times, the influence of the residual water sample detected before on the next water quality detection is avoided, the accuracy of the detection device is improved, meanwhile, the sample inlet pipe 34 can be reused in a short time after the water quality detection is carried out, the recycling use of the sample inlet pipe 34 in a short time is realized, and the detection device can carry out pipelined detection operation, the detection efficiency of the detection device is further improved.

Specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 9, a plurality of placing grooves for placing the test tubes 20 are formed in the placing frame 19, the plurality of placing grooves are distributed in an annular equidistant manner about the axis of the placing frame 19, the number of the sampling tubes 34 is the same as that of the placing grooves, through holes matched with the sampling tubes 34 are formed in the first rotating disc 29, the second rotating disc 31 and the third rotating disc 33, and the plurality of through holes are distributed in an annular equidistant manner about the axes of the first rotating disc 29, the second rotating disc 31 and the third rotating disc 33. The sampling tube 34 includes a first connecting tube 3401 and a second connecting tube 3402, one end of the second connecting tube 3402 is inserted into the inside of one end of the first connecting tube 3401, the first connecting tube 3401 and the second connecting tube 3402 are both L-shaped tubes, two ends of the first connecting tube 3401 respectively penetrate through the first turntable 29 and the second turntable 31, two ends of the second connecting tube 3402 respectively penetrate through the second turntable 31 and the third turntable 33, the first connecting tube 3401 and the second connecting tube 3402 are close to one end in sliding connection, and the sampling tube 34 is of an 'Contraband' type structure. The first and

second connection tubes

3401 and 3402 are slidably connected to each other at their ends adjacent to each other such that the middle portion of the sampling tube 34, i.e., a section extending through the second rotary plate 31, can be freely extended and contracted, and since the lengths of the middle portions of the sampling tube 34, i.e., a section extending through the second rotary plate 31, are different between the detection position and the cleaning position, the freely extended and contracted sampling tube 34 is provided to match the rotation of the first and third

rotary plates

29 and 33.

Specifically, as shown in fig. 3, 4, 5, 6 and 7, the thicknesses of the first and

second rings

17 and 21 are greater than the thicknesses of the first and

second gears

23 and 26, and the driving member 22 is a servo motor. The limiting columns 10 are arranged in a plurality, the limiting columns 10 are distributed in an annular and equidistant mode about the axis of the lantern ring 8, and the number of the limiting columns 10 is the same as that of the sampling tubes 34. Both the first torsion spring 9 and the second torsion spring 15 are always in a compressed state. The thickness of first ring gear 17 and second ring gear 21 is greater than the thickness of first gear 23 and second gear 26 and makes hydraulic stem 5 drive the in-process that the sill 6 removed, first gear 23 and first ring gear 17 and second gear 26 and second ring gear 21 all remain the meshing all the time, detection device's stability has been improved, simultaneously, first torsion spring 9 is in compression state all the time, make lantern ring 8 lose after spacing, can rotate fast, second torsion spring 15 is in compression state all the time, make after shifting block 11 breaks away from with stand 16, couple 14 can reset fast, detection device's stability has further been improved.

Specifically, as shown in fig. 1, fig. 2 and fig. 8, the first interface 39 and the second interface 40 are both provided with a sealing member therein, so that the sealing performance of the sampling tube 34 during cleaning is improved, the sewage during cleaning is prevented from splashing out, and the cleaning effect is also improved.

A method for detecting heavy metals in water comprises the following steps:

s1: placing a sample: the base table 6 and the placing frame 19 are driven to descend by the hydraulic rod 5, and a plurality of test tubes 20 filled with water quality samples are sequentially placed on the placing frame 19;

s2: primary detection: the driving mechanism drives the sample injection assembly to rotate to a proper position, the hydraulic rod 5 drives the base table 6 and the placing frame 19 to ascend, one end of the sample injection tube 34 enters the test tube 20, the water quality detector 4 is started, and a water quality sample is extracted to enter the water quality detector 4 through the sample injection tube 34 and the sample injection port 35 for water quality heavy metal detection;

s3: and (3) secondary detection: after the detection is finished, the hydraulic rod 5 drives the bottom table 6 and the placing rack 19 to descend, the driving mechanism drives the placing rack 19 to rotate, so that the next test tube 20 to be detected enters the area to be detected, meanwhile, the driving mechanism drives the sample feeding assembly to rotate to the corresponding position, and the operation flow of S2 is repeated to detect the next sample;

s4: cleaning: the connecting arm 38 is driven to move upwards while the base 6 is driven by the hydraulic rod 5 to move, so that the first connector 39 and the second connector 40 are respectively combined with two ends of the sampling pipe 34 to be cleaned, the sampling pipe 34 is cleaned by pumping water of the water storage tank 3 for use, and the cleaned sewage is discharged from the discharge pipe 42 through the second connector 40.

In summary, when different water samples or the same water sample needs to be tested for multiple times, a plurality of different water samples or the same water sample are firstly arranged, and are respectively put into a plurality of test tubes 20, and the plurality of test tubes 20 are sequentially placed on the placing rack 19, the driving member 22 drives the first gear 23 to rotate, so that the first toothed ring 17 meshed with the first gear 23 rotates, and the connecting rod 7 is driven to rotate, because the hook 14 limits the limiting column 10 and the sleeve ring 8, the sleeve ring 8 and the connecting rod 7 relatively rotate, the first torsion spring 9 is compressed, the connecting rod 7 rotates to drive the shifting block 11 to rotate, when the shifting block 11 rotates to the upright column 16, the shifting block 11 continues to rotate, the upright column 16 and the hook 14 rotate, the hook 14 is separated from the limiting column 10, and the second torsion spring 15 is compressed, the limiting column 10 loses limiting, the compressed first torsion spring 9 restores to the original state, the pulling lantern ring 8 rotates, the shifting block 11 continues to rotate, after the shifting block is separated from the upright column 16, the compressed second torsion spring 15 restores to the original state, the pulling upright column 16 and the hook 14 restore to the original state, the lantern ring 8 rotates to enable the hook 14 to clamp the next limiting column 10, meanwhile, the lantern ring 8 rotates to drive the placing frame 19 and the second toothed ring 21 to rotate, so that the test tube 20 filled with a water sample to be detected rotates to the area to be detected, meanwhile, the second toothed ring 21 rotates to drive the second gear 26 to rotate, the third gear 27 is driven to rotate through the transmission of the connecting shaft 25, so that the third toothed ring 30 and the first rotary disc 29 rotate to drive the corresponding sample inlet tube 34 to rotate to the area to be detected, the hydraulic rod 5 is started to drive the bottom table 6 and the placing frame 19 to move upwards, one end of the corresponding sample inlet tube 34 enters the test tube 20, and the water quality detector 4 is started, a water quality sample is extracted to enter the water quality detector 4 through the sample inlet pipe 34 and the sample inlet 35 for water quality heavy metal detection, after the detection is finished, the hydraulic rod 5 drives the bottom platform 6 and the placing rack 19 to move downwards, the operations are repeated, the driving mechanism drives the placing rack 19 to rotate, so that the next test tube 20 to be detected enters the area to be detected, meanwhile, the driving mechanism drives the next sample inlet tube 34 to rotate to the corresponding position, and the operation flow is repeated to detect the next sample, meanwhile, the used sample inlet pipe 34 is rotated out, the hydraulic rod 5 drives the bottom platform 6 to move and simultaneously drives the connecting arm 38 to move upwards, so that the first port 39 and the second port 40 are respectively combined with both ends of the sampling tube 34 to be cleaned, the sampling pipe 34 is cleaned by pumping water from the water storage tank 3, and the cleaned sewage is discharged from the discharge pipe 42 through the second connection port 40, and the cleaned sampling pipe 34 can be used continuously.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a quality of water heavy metal detection device, includes base (1), arranges water storage box (3), test tube (20), riser (2) and water quality testing appearance (4) of establishing on base (1) in proper order, water quality testing appearance (4) are last to have introduction port (35), and its characterized in that still includes:

the sample injection assembly is arranged on the vertical plate (2) and comprises a second rotary plate (31) connected with the vertical plate (2), a sample injection pipe (34) penetrates through the second rotary plate (31), the left side and the right side of the vertical plate (2) are respectively connected with a second support frame (28) and a third support frame (32), the second support frame (28) is connected with a first rotary plate (29), a third toothed ring (30) meshed with a third gear (27) is connected to the periphery of the first rotary plate (29), the third support frame (32) is connected with a third rotary plate (33), one end of the sample injection pipe (34) penetrates through the first rotary plate (29) and extends above the test tube (20), and the other end of the sample injection pipe penetrates through the third rotary plate (33) and extends above a sample injection port (35);

the intermittent mechanism is matched with the sample feeding assembly to operate and comprises a connecting rod (7), a first torsion spring (9), a lantern ring (8) and a first toothed ring (17) are arranged around the connecting rod (7) respectively, two ends of the first torsion spring (9) are connected with the connecting rod (7) and the lantern ring (8) respectively, the upper end face of the lantern ring (8) is connected with a placing rack (19) through a connecting strip (18), the test tube (20) is placed on the placing rack (19), and a second toothed ring (21) is connected to the outer side of the connecting strip (18);

a hydraulic rod (5), wherein the hydraulic rod (5) is fixedly arranged on the base (1), the telescopic end of the intermittent mechanism is connected with the intermittent mechanism through a bottom platform (6) to control the intermittent mechanism to move up and down, the bottom table (6) is also provided with a limiting component, the limiting component comprises a limiting column (10) connected with the lantern ring (8), a shifting block (11) connected with the connecting rod (7) and a fixed seat (12) connected with the bottom table (6), the upper end surface of the fixed seat (12) is rotationally connected with a hook (14) through a rotating rod (13), one end of the hook (14) is matched with the limiting column (10), the lower end of the hook (14) is fixedly connected with an upright column (16) matched with the shifting block (11), a second torsion spring (15) is sleeved on the outer side of the rotating rod (13), and two ends of the second torsion spring (15) are respectively connected with the hook (14) and the fixed seat (12);

the driving mechanism is arranged on the base (1) so as to enable the intermittent mechanism and the sample feeding assembly to synchronously operate.

2. The water quality heavy metal detection device according to claim 1, wherein the driving mechanism comprises a driving part (22) fixedly connected with the upper end face of the base (1), the output end of the driving part (22) is fixedly connected with a first gear (23), the first gear (23) is meshed with a first toothed ring (17), a first support frame (24) is fixedly connected to one side of the vertical plate (2), a connecting shaft (25) is rotatably connected to the first support frame (24), a third gear (27) and a second gear (26) which are coaxially arranged are fixedly connected to the upper end and the lower end of the connecting shaft (25) respectively, and the second gear (26) is meshed with a second toothed ring (21).

3. The water quality heavy metal detection device according to claim 2, wherein the base (1) is provided with a PLC (programmable logic controller) (36) electrically connected with the hydraulic rod (5) and the driving member (22), the vertical plate (2) is provided with a cleaning mechanism matched with the sample inlet pipe (34), the cleaning mechanism comprises a through groove (37) formed in the vertical plate (2), the through groove (37) is internally connected with a connecting arm (38), the connecting arm (38) is fixedly connected with the base (6) through a supporting rod (43), one end of the connecting arm (38) extends to the lower part of the first connecting pipe (3401) and is fixedly connected with a first interface (39), the first interface (39) is communicated with the water storage tank (3) through a hose (41), and the other end of the connecting arm (38) extends to the lower part of the second connecting pipe (3402) and is fixedly connected with a second interface (40), the lower end of the second interface (40) is communicated with a discharge pipe (42).

4. The water quality heavy metal detection device according to claim 1, wherein a plurality of placing grooves for placing the test tubes (20) are formed in the placing frame (19), the placing grooves are distributed in an annular equidistant mode about the axis of the placing frame (19), the number of the sampling tubes (34) is the same as that of the placing grooves, through holes matched with the sampling tubes (34) are formed in the first rotating disc (29), the second rotating disc (31) and the third rotating disc (33), and the through holes are distributed in an annular equidistant mode about the axes of the first rotating disc (29), the second rotating disc (31) and the third rotating disc (33).

5. The water quality heavy metal detection device of claim 4, wherein the sample inlet pipe (34) comprises a first connecting pipe (3401) and a second connecting pipe (3402), one end of the second connecting pipe (3402) is inserted into one end of the first connecting pipe (3401), the first connecting pipe (3401) and the second connecting pipe (3402) are both L-shaped pipes, two ends of the first connecting pipe (3401) respectively penetrate through the first turntable (29) and the second turntable (31), two ends of the second connecting pipe (3402) respectively penetrate through the second turntable (31) and the third turntable (33), one ends of the first connecting pipe (3401) and the second connecting pipe (3402) are in sliding connection close to each other, and the sample inlet pipe (34) is in a structure of 'Contraband'.

6. A water quality heavy metal detection device according to claim 2, wherein the thickness of the first gear ring (17) and the second gear ring (21) is larger than the thickness of the first gear (23) and the second gear (26), and the driving member (22) is a servo motor.

7. The water quality heavy metal detection device according to claim 1, wherein a plurality of limiting columns (10) are arranged, the limiting columns (10) are distributed in an annular and equidistant mode about the axis of the lantern ring (8), and the number of the limiting columns (10) is the same as that of the sampling pipes (34).

8. A water quality heavy metal detection device according to claim 7, characterized in that the first torsion spring (9) and the second torsion spring (15) are both always in a compressed state.

9. A water quality heavy metal detection device according to claim 3, characterized in that a sealing member is arranged in each of the first interface (39) and the second interface (40).

10. A method for detecting heavy metals in water, which is applied to the detection device according to any one of claims 1 to 9, and which comprises the steps of:

s1: placing a sample: the base table (6) and the placing frame (19) are driven to descend by the hydraulic rod (5), and a plurality of test tubes (20) filled with water quality samples are sequentially placed on the placing frame (19);

s2: primary detection: the driving mechanism drives the sample injection assembly to rotate to a proper position, the hydraulic rod (5) drives the base (6) and the placing rack (19) to ascend, one end of the sample injection pipe (34) enters the test tube (20), the water quality detector (4) is started, and a water quality sample is extracted and enters the water quality detector (4) through the sample injection pipe (34) and the sample injection port (35) to be detected for heavy metal in water quality;

s3: and (3) secondary detection: after the detection is finished, the hydraulic rod (5) drives the bottom platform (6) and the placing rack (19) to descend, the driving mechanism drives the placing rack (19) to rotate, so that the next test tube (20) to be detected enters a region to be detected, meanwhile, the driving mechanism drives the sample feeding assembly to rotate to a corresponding position, and the operation flow of S2 is repeated to detect the next sample;

s4: cleaning: the connecting arm (38) is driven to move upwards while the base (6) is driven to move by the hydraulic rod (5), so that the first connector (39) and the second connector (40) are respectively combined with two ends of the sample inlet pipe (34) to be cleaned, the sample inlet pipe (34) is cleaned by water pumped from the water storage tank (3) to be used, and the cleaned sewage is discharged by the discharge pipe (42) through the second connector (40).