Portable water quality heavy metal real-time detection device and detection method

Abstract

The invention relates to the technical field of water quality heavy metal detection, in particular to a portable water quality heavy metal real-time detection device and a detection method. According to the technical scheme, the detection box comprises a detection box shell assembly, and a corresponding detection tube dual-purpose driving mechanism is installed in the middle of the detection box shell assembly. A second vertical clamping rod is pushed to move along a multilateral sliding cavity block through a corresponding detection tube dual-purpose driving mechanism according to the steps required by the detection tube, so that when a reagent is put into the detection tube, a second arc-shaped sealing block, a sealing sliding cavity block and a detection box protection shell form a relative sealing state, the storage and protection environment is prevented from being polluted, and the detection efficiency is improved. When the detection tube needs to be stored, the first arc-shaped sealing block is attached to a crack of the sealing sliding cavity block, and the first arc-shaped sealing block and the detection box protection shell form a sealing condition, so that the detection tube is well stored and protected, the detection tube is prevented from being damaged, and the situation that the detection tube is damaged due to excessive extrusion of the sealing position of the detection tube is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality heavy metal detection, and in particular to a portable water quality heavy metal real-time detection device and a detection method. Background Art

[0002] The real-time detection device for heavy metals in water can continuously and in real time monitor the heavy metal content in water bodies, and promptly detect changes and abnormalities in water quality. This is of great significance for some places with high water quality requirements, such as drinking water sources, aquaculture bases, industrial water, etc. It can help relevant personnel take timely measures to avoid losses caused by water quality problems. Other substances in water samples, such as organic matter, suspended matter, pH, etc., may interfere with the detection of heavy metals and affect the accuracy of the test results. The water quality sampling points are usually dirty, and the staff use their hands to collect samples for a long time, which is easy to touch the surrounding environment, and may put metal particles into the test tube, thereby affecting the accuracy of the test.

[0003] In the patent document with the published announcement number CN110987919B, a method for detecting heavy metal ions in water quality is disclosed. In this detection method, sampling is performed at multiple points during the detection. When sampling, water is firstly taken twice from the shallow layer, the middle layer and the deep layer respectively, and then the water flow is stirred to mix the water in the shallow layer, the middle layer and the deep layer, and then water is taken twice from the surface layer and the middle layer respectively. Sampling water at multiple points makes the detection result more accurate, greatly reduces the detection error caused by environmental factors, and preserves the water sample at the same temperature as the water body at the water sampling point to prevent inaccurate detection results caused by external temperature changes, thereby increasing the detection accuracy.

[0004] When the above device is in use, it is necessary to collect water quality samples at multiple points. During this process, the test tube is taken out many times, and the staff needs to use rubber stoppers to frequently open or close the test tube, which may cause the gloves to touch dirt and other objects. These interferences can easily enter the test bottle and affect the actual test results. At the same time, due to the need to stir the water flow, the staff is usually required to plug the bottle tightly, which can easily cause damage to the test bottle.

[0005] Therefore, the present application proposes a portable real-time detection device and method for heavy metals in water quality. Summary of the invention

[0006] The purpose of the present invention is to address the problem in the background technology that there is a need to collect water quality samples at multiple points. Workers need to use rubber stoppers to frequently open or close the detection tube, which may cause dirt and other objects on the gloves. These interferents can easily enter the detection bottle and affect the actual detection results. Therefore, a portable water quality heavy metal real-time detection device and detection method are proposed.

[0007] On the one hand, the present invention provides a portable real-time detection device for heavy metals in water quality, comprising a detection box housing assembly, a corresponding detection tube dual-purpose driving mechanism is installed in the middle of the detection box housing assembly, and a detection tube moving assembly is installed on the outer side of the corresponding detection tube dual-purpose driving mechanism; The detection box housing assembly comprises a detection box protective housing, the inner wall of which is provided with a plurality of sealed protective cavities for installing detection tubes, and the detection box protective housing is located inside the sealed protective cavity and is fixedly connected with a sealed sliding cavity block; The corresponding detection tube dual-purpose driving mechanism includes an auxiliary positioning rod fixedly mounted on the bottom of the detection box protective shell; The detection tube moving assembly includes a limit block rotatably connected to the outside of the auxiliary positioning rod, the outside of the limit block is fixedly connected to the limit block, the outside of the limit block is slidably connected to an external sliding rod, one side of the external sliding rod is fixedly connected to a first vertical clamping rod, one side of the first vertical clamping rod is hinged with two groups of double-hinged rods, the side of the double-hinged rod away from the external sliding rod is hinged with a second vertical clamping rod, and the extended end of the second vertical clamping rod is slidably connected to the inside of the multilateral sliding cavity block; A detection tube corresponding clamping assembly is installed on one side of the detection tube moving assembly, and the detection tube corresponding clamping assembly includes a first arc-shaped sealing block fixedly installed on one side of the second vertical clamping rod, and a group of magnetic limit clamping ring blocks are fixedly connected to the side of the first arc-shaped sealing block away from the second vertical clamping rod. The number of the magnetic limit clamping ring blocks is two groups, and the two groups of magnetic limit clamping ring blocks are arranged in a magnetic splicing state, and one side of the other group of magnetic limit clamping ring blocks is fixedly connected with a second arc-shaped sealing block, and the second arc-shaped sealing block and the first arc-shaped sealing block are slidably installed inside the sealing protection cavity, and the second arc-shaped sealing block, the first arc-shaped sealing block, the sealing sliding cavity block, and the detection box protective shell are arranged in a sealed state.

[0008] Optionally, the plurality of sealed protection cavities are arranged in an annular state with respect to the annular inner wall of the protective shell of the detection box, and the number of the sealed protection cavities is consistent with the number of the detection tubes.

[0009] Optionally, the detection box protective shell is located inside the sealed protection cavity and is fixedly connected with arc-shaped pressure blocks whose number is the same as the sealed protection cavity, and the arc-shaped pressure blocks are located directly above the detection tube.

[0010] Optionally, the corresponding detection tube dual-purpose driving mechanism also includes a limiting pressure block, a magnetic pressure block is provided inside the auxiliary positioning rod, and the outer side of the limiting pressure block is slidably installed inside the limiting pressure block through the magnetic pressure block.

[0011] Optionally, the detection tube moving assembly also includes a slide positioning block having the same number of slide grooves as the number of slide grooves opened on the multilateral slide cavity block, the slide positioning block is internally slidably connected to a slide cavity block, and a limiting spring is fixedly connected between the slide cavity block and the slide positioning block.

[0012] Optionally, one side of the multilateral sliding cavity block is provided with an auxiliary slide with the same number of slide grooves as the multilateral sliding cavity block, the internal sliding connection of the auxiliary slide is provided with a guide push block, the outer side of the guide push block is hinged with an inclined push rod, the side of the inclined push rod away from the guide push block is hinged to the outer side of the sliding cavity block, and the guide push block is fixedly connected to the second vertical clamping rod.

[0013] Optionally, the bottom of the auxiliary positioning rod is rotatably connected to a main gear, the outer side of the main gear is meshingly connected to an auxiliary gear, and the auxiliary gear is rotatably connected to the inside of the detection box protective shell.

[0014] Optionally, a gear cavity adapted to the external slide rod is provided at the top of the main gear, and the inner wall of the gear cavity is provided with anti-slip grooves.

[0015] On the other hand, the present invention provides a method for real-time detection of heavy metals in water quality, which is applied to the above portable real-time detection device for heavy metals in water quality, and comprises the following steps: S1: First, select the designated location to collect water samples. The staff will pass the test tube through multiple points to take samples. When taking samples, first take water twice from the shallow layer, middle layer and deep layer respectively; S2: Place the test tube between two sets of magnetic limit clamp blocks, and use a dropper to add the color developer into the test tube, and insert the rubber stopper into the test tube without much effort. The corresponding test tube dual-purpose driving mechanism drives the test tube wrapped by the corresponding clamping assembly to move synchronously. The second arc-shaped sealing block, the first arc-shaped sealing block and the sealing sliding cavity block, and the protective shell of the test box wrap the test tube to form a sealed state, and the upper bottle stopper of the test tube and the arc-shaped pressure block form a relative extrusion state, completing the sealing state between the test tube and the bottle stopper; S3: The corresponding detection tube dual-purpose driving mechanism drives the detection tube corresponding clamping assembly to return to the original position, and the auxiliary gear drives the main gear, the limit block and the external sliding rod to rotate along the auxiliary positioning rod through the engagement with the main gear, thereby rotating and shaking the detection tube after the reagent is passed through; S4: The corresponding detection tube dual-purpose driving mechanism causes the second arc-shaped sealing block, the first arc-shaped sealing block and the sealing sliding cavity block, and the detection box protective shell to wrap the detection tube to form a sealed state, waiting for the heavy metal ions to react with the color developer to generate colored compounds, and then using a photoelectric colorimeter device to measure the absorbance of the solution, and calculate the concentration of the heavy metal ions according to the standard curve to obtain the corresponding result.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. According to the steps that the detection tube needs to perform, the corresponding detection tube dual-purpose driving mechanism pushes the second vertical clamping rod to move along the multilateral sliding cavity block, and then when the detection tube is put into the reagent, the second arc-shaped sealing block, the sealing sliding cavity block, and the detection box protective shell form a relatively sealed state to prevent the storage environment from being polluted. When the detection tube needs to be stored, the first arc-shaped sealing block fits in the gap between the sealing sliding cavity block and forms a sealing condition with the detection box protective shell, so as to better protect the detection tube, avoid damage to the detection tube, avoid excessive squeezing of the sealing position of the detection tube to cause damage to the detection tube, and facilitate the staff to carry the device; 2. The upper part of the detection tube enters the sealed protection cavity under the clamping of the sealing sliding cavity block, and the bottle plug above the detection tube and the arc-shaped pressure block form a relative extrusion state, resulting in better sealing between the bottle plug and the detection tube, thereby improving the preservation effect of the detection tube and avoiding external influences before detection; 3. The auxiliary gear drives the main gear, the limit block and the external slide rod to rotate along the auxiliary positioning rod by meshing with the main gear, and then fully rotates and shakes the test tube after the reagent is passed through, thereby improving the reagent reaction efficiency. In view of the requirement for rapid testing in health services, compared with the traditional method of taking out and shaking the test tubes one by one, it improves the detection efficiency and avoids contamination caused by excessive contact between the test tubes and the outside, which affects the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the detection kit for rapid detection of food microorganisms of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of the middle A area; Figure 3 It is a structural schematic diagram of the position-limiting pressing block of the present invention; Figure 4 It is a schematic structural diagram of the second arc-shaped sealing block of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the middle B area; Figure 6 It is a structural schematic diagram of the auxiliary positioning rod of the present invention; Figure 7 It is a structural schematic diagram of the magnetic limiting clamping ring block of the present invention; Figure 8 It is a schematic structural diagram of the first arc-shaped sealing block of the present invention.

[0018] Reference numerals: 1. Detection box housing assembly; 101. Detection box protective housing; 102. Sealed sliding cavity block; 103. Sealed protective cavity; 104. Arc-shaped pressure block; 2. Corresponding detection tube dual-purpose driving mechanism; 201. Position-limiting pressure block; 202. Auxiliary positioning rod; 203. Main gear; 204. Auxiliary gear; 205. Gear clamping cavity; 206. Magnetic pressure block; 3. Detection tube moving assembly; 301. Multi-sided sliding cavity block; 302 , double hinged rod; 303, external slide rod; 304, first vertical clamping rod; 305, auxiliary slide; 306, slide positioning block; 307, inclined push rod; 308, slide cavity clamping block; 309, guide push block; 310, limit spring; 311, second vertical clamping rod; 312, limit block; 4, detection tube corresponding clamping assembly; 401, first arc sealing block; 402, second arc sealing block; 403, magnetic limit clamping ring block. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 3 As shown, the portable water quality heavy metal real-time detection device proposed by the present invention comprises a detection box housing assembly 1, a corresponding detection tube dual-purpose driving mechanism 2 is installed in the middle of the detection box housing assembly 1, and a detection tube moving assembly 3 is installed on the outer side of the corresponding detection tube dual-purpose driving mechanism 2; The detection box housing assembly 1 includes a detection box protective housing 101, the inner wall of the detection box protective housing 101 is provided with a plurality of sealed protective cavities 103 for installing detection tubes, the detection box protective housing 101 is located inside the sealed protective cavity 103 and is fixedly connected with a sealed sliding cavity block 102, the plurality of sealed protective cavities 103 are arranged in an annular state with respect to the annular inner wall of the detection box protective housing 101, and the number of the sealed protective cavities 103 is consistent with the number of detection tubes; The detection box protective shell 101 is located inside the sealed protective cavity 103 and is fixedly connected with arc-shaped pressure blocks 104 whose number is the same as the sealed protective cavity 103. The arc-shaped pressure blocks 104 are located directly above the detection tube. When the second arc-shaped sealing block 402, the first arc-shaped sealing block 401, the sealing sliding cavity block 102 and the detection box protective shell 101 wrap the detection tube to form a sealed state, the upper part of the detection tube enters the sealed protective cavity 103 under the clamping of the sealing sliding cavity block 102, and the bottle stopper above the detection tube forms a relative extrusion state with the arc-shaped pressure block 104, so that the sealing between the bottle stopper and the detection tube is better, thereby improving the preservation effect of the detection tube.

[0021] like Figure 1-Figure 3As shown, the corresponding detection tube dual-purpose driving mechanism 2 includes an auxiliary positioning rod 202 fixedly installed at the bottom of the detection box protective shell 101, and the corresponding detection tube dual-purpose driving mechanism 2 also includes a limiting pressure block 201. The auxiliary positioning rod 202 is provided with a magnetic pressure block 206 inside. The outer side of the limiting pressure block 201 is slidably installed inside the limiting pressure block 201 through the magnetic pressure block 206. The bottom of the auxiliary positioning rod 202 is rotatably connected to the main gear 203, and the outer side of the main gear 203 is meshed with an auxiliary gear 204. The auxiliary gear 204 is rotatably connected to the detection Inside the protective housing 101 of the box, a gear card cavity 205 adapted to the external sliding rod 303 is opened on the top of the main gear 203, and the inner wall of the gear card cavity 205 is provided with anti-slip grooves. When the detection tube moving component 3 and the detection tube corresponding clamping component 4 gather the detection tubes at the central position for reagent injection, the second vertical clamping rod 311 moves along the slideway of the multilateral sliding cavity block 301 toward the auxiliary positioning rod 202, and the second vertical clamping rod 311 drives the double hinged rod 302 to rotate clockwise along the connection with the second vertical clamping rod 311, and the double hinged rod 302 rotates clockwise through the first vertical clamping rod 311. The straight card rod 304 drives the external slide bar 303 to move downward along the limit block 312. At this time, the external slide bar 303 is inserted into the gear card cavity 205. The outer wall of the external slide bar 303 is in a state of contact with the inner wall of the gear card cavity 205, and the friction between the external slide bar 303 and the gear card cavity 205 causes the main gear 203 and the external slide bar 303 to move synchronously. It is explained here that the connection method between the external slide bar 303 and the gear card cavity 205 can also be a connection method of bevel gear meshing. As the motor connected to the bottom of the auxiliary gear 204 drives the auxiliary gear 204 The motor is fixedly connected to the protective shell 101 of the detection box, and the auxiliary gear 204 drives the main gear 203, the limit block 312 and the external slide bar 303 to rotate along the auxiliary positioning rod 202 through the engagement with the main gear 203, so as to fully rotate and shake the detection tube after the reagent is passed through, so as to improve the reaction efficiency of the reagent. In view of the requirement of rapid detection in health services, compared with the traditional method of taking out and shaking the detection tubes one by one, it improves the detection efficiency and avoids contamination caused by excessive contact between the detection tubes and the outside, which affects the accuracy of the detection results.

[0022] like Figure 3-Figure 8As shown, the detection tube moving assembly 3 includes a limit block 312 rotatably connected to the outside of the auxiliary positioning rod 202, the outside of the limit block 312 is fixedly connected to the limit block 312, the outside of the limit block 312 is slidably connected to an external sliding rod 303, one side of the external sliding rod 303 is fixedly connected to a first vertical clamping rod 304, one side of the first vertical clamping rod 304 is hinged with two groups of double hinged rods 302, and the side of the double hinged rod 302 away from the external sliding rod 303 is hinged with a second vertical clamping rod 311, and the second vertical clamping rod The extended end of 311 is slidably connected to the inside of the multilateral sliding cavity block 301. The detection tube moving assembly 3 also includes a slide positioning block 306 with the same number of slide grooves as the multilateral sliding cavity block 301. The slide positioning block 306 is slidably connected to the slide cavity block 308 inside. The slide cavity block 308 and the slide positioning block 306 are fixedly connected with a limit spring 310. One side of the multilateral sliding cavity block 301 is provided with an auxiliary slide 305 with the same number of slide grooves as the multilateral sliding cavity block 301. The inside of the auxiliary slide 305 The guide push block 309 is slidably connected, and the outer side of the guide push block 309 is hinged with an inclined push rod 307. The side of the inclined push rod 307 away from the guide push block 309 is hinged on the outer side of the sliding cavity block 308. The guide push block 309 is fixedly connected with the second vertical clamping rod 311. When the staff manually pushes the limiting pressure block 201 along the auxiliary positioning rod 202 into the magnetic pressure block 206, the limiting pressure block 201 and the bottom of the magnetic pressure block 206 are fixed in a magnetic state. The lower part of the limiting pressure block 201 squeezes the inclined push rod 307, and the inclined push rod 307 drives the slide cavity block 308 to move downward along the inside of the slideway positioning block 306 under the limitation of the guide push block 309 and the auxiliary slideway 305. At the same time, the inclined push rod 307 deflects along the slide cavity block 308, and the guide push block 309 pushes the second vertical clamping rod 311 along the auxiliary slideway 305, and the second vertical clamping rod 311 drives the corresponding clamping assembly 4 of the detection tube to slide stably; In this embodiment, a detection tube corresponding clamping assembly 4 is installed on one side of the detection tube moving assembly 3, and the detection tube corresponding clamping assembly 4 includes a first arc-shaped sealing block 401 fixedly installed on one side of the second vertical clamping rod 311, and a group of magnetic attraction limiting clamping ring blocks 403 are fixedly connected to the side of the first arc-shaped sealing block 401 away from the second vertical clamping rod 311. The number of magnetic attraction limiting clamping ring blocks 403 is two groups, and the two groups of magnetic attraction limiting clamping ring blocks 403 are arranged in a magnetic splicing state. One side of the other group of magnetic attraction limiting clamping ring blocks 403 is fixedly connected with a second arc-shaped sealing block 402, and the second arc-shaped sealing block 402 and the first arc-shaped sealing block 401 are slidably installed in the sealing protection cavity 103, and the second arc-shaped sealing block 402, the first arc-shaped sealing block 401 and the sealing sliding cavity block 102, and the detection box protective shell 101 are arranged in a sealed state. When the corresponding detection tube dual-purpose driving mechanism 2 pushes the second vertical clamping rod 311 along the multilateral sliding cavity block 301 toward the auxiliary positioning rod 2 When the test tube moves in one direction, the second vertical clamping rod 311 drives the test tube corresponding to the clamping assembly 4 to move synchronously. At this time, the staff can quickly put the reagent into the exposed test tube for testing. At this time, the second arc-shaped sealing block 402 is fitted in the gap between the sealing sliding cavity block 102, and the second arc-shaped sealing block 402 forms a relatively sealed state with the sealing sliding cavity block 102 and the test box protective shell 101 to avoid pollution of the storage environment. Similarly, when the corresponding test tube dual-purpose driving mechanism 2 drives the second vertical clamping rod 311 to move in the opposite direction along the multilateral sliding cavity block 301, the second vertical clamping rod 311 drives the test tube corresponding to the clamping assembly 4 toward the sealed protective cavity 103, and the first arc-shaped sealing block 401 is fitted in the gap between the sealing sliding cavity block 102, and forms a sealing condition with the test box protective shell 101, so as to better protect the test tube, avoid damage to the test tube, and avoid excessive squeezing of the sealing position of the test tube to cause damage to the test tube; It is explained here that the second arc-shaped sealing block 402 can be pushed manually to separate the two magnetic limiting clamping ring blocks 403, so as to facilitate the replacement of the detection tube.

[0023] The real-time detection method of heavy metals in water includes the following steps: S1: First, select the designated location to collect water samples. The staff will pass the test tube through multiple points to take samples. When taking samples, first take water twice from the shallow layer, middle layer and deep layer respectively; S2: Place the detection tube between the two sets of magnetic limit clamp blocks 403, and use a dropper to add the color developer into the detection tube, and insert the rubber stopper into the detection tube without much effort. The corresponding detection tube dual-purpose driving mechanism 2 drives the detection tube wrapped by the corresponding clamping assembly 4 to move synchronously, and the second arc-shaped sealing block 402, the first arc-shaped sealing block 401 and the sealing sliding cavity block 102, and the detection box protective shell 101 wrap the detection tube to form a sealed state, and the upper bottle stopper of the detection tube and the arc-shaped pressure block 104 form a relative extrusion state, completing the sealing state between the detection tube and the bottle stopper; S3: The corresponding detection tube dual-purpose driving mechanism 2 drives the detection tube corresponding clamping assembly 4 to return to the original position, and the auxiliary gear 204 drives the main gear 203, the limit block 312 and the external slide bar 303 to rotate along the auxiliary positioning rod 202 by meshing with the main gear 203, thereby rotating and shaking the detection tube after the reagent is passed through; S4: The corresponding detection tube dual-purpose driving mechanism 2 again causes the second arc-shaped sealing block 402, the first arc-shaped sealing block 401, the sealing sliding cavity block 102, and the detection box protective shell 101 to wrap the detection tube to form a sealed state, waiting for the heavy metal ions to react with the color developer to generate colored compounds, and then using a photoelectric colorimeter device to measure the absorbance of the solution, and calculate the concentration of the heavy metal ions according to the standard curve to obtain the corresponding result.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. "Comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0025] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A portable real-time detection device for heavy metals in water, comprising a detection box housing component (1), characterized in that: A corresponding detection tube dual-purpose driving mechanism (2) is installed in the middle of the detection box housing assembly (1), and a detection tube moving assembly (3) is installed on the outer side of the corresponding detection tube dual-purpose driving mechanism (2); The detection box housing assembly (1) comprises a detection box protective housing (101), the inner wall of the detection box protective housing (101) is provided with a plurality of sealed protective cavities (103) for installing detection tubes, and the detection box protective housing (101) is located inside the sealed protective cavity (103) and is fixedly connected to a sealed sliding cavity block (102); The corresponding detection tube dual-purpose driving mechanism (2) comprises an auxiliary positioning rod (202) fixedly mounted on the bottom of the detection box protective housing (101); The detection tube moving assembly (3) comprises a limit block (312) rotatably connected to the outside of the auxiliary positioning rod (202); the outside of the limit block (312) is fixedly connected to the limit block (312); the outside of the limit block (312) is slidably connected to an external sliding rod (303); one side of the external sliding rod (303) is fixedly connected to a first vertical clamping rod (304); one side of the first vertical clamping rod (304) is hinged to two groups of double hinged rods (302); a side of the double hinged rod (302) away from the external sliding rod (303) is hinged to a second vertical clamping rod (311); an extended end of the second vertical clamping rod (311) is slidably connected to the inside of the multilateral sliding cavity block (301); A detection tube corresponding clamping assembly (4) is installed on one side of the detection tube moving assembly (3), and the detection tube corresponding clamping assembly (4) includes a first arc-shaped sealing block (401) fixedly installed on one side of the second vertical clamping rod (311), and a group of magnetic limit clamping ring blocks (403) are fixedly connected to the side of the first arc-shaped sealing block (401) away from the second vertical clamping rod (311), and the number of the magnetic limit clamping ring blocks (403) is two groups, and the two groups of magnetic limit clamping ring blocks (403) are arranged in a magnetic splicing state, and one side of the other group of magnetic limit clamping ring blocks (403) is fixedly connected to a second arc-shaped sealing block (402), and the second arc-shaped sealing block (402) and the first arc-shaped sealing block (401) are slidably installed inside the sealing protection cavity (103).

2. The portable real-time heavy metal detection device for water quality according to claim 1 is characterized in that: The plurality of sealed protective cavities (103) are arranged in an annular state with respect to the annular inner wall of the detection box protective shell (101); the number of the sealed protective cavities (103) is consistent with the number of detection tubes; the second arc-shaped sealing block (402), the first arc-shaped sealing block (401), the sealed sliding cavity block (102), and the detection box protective shell (101) are arranged in a sealed state.

3. The portable real-time detection device for heavy metals in water according to claim 2 is characterized in that: The detection box protective shell (101) is located inside the sealed protection cavity (103) and is fixedly connected with arc-shaped pressure blocks (104) whose number is the same as the sealed protection cavity (103). The arc-shaped pressure blocks (104) are located directly above the detection tube.

4. The portable real-time heavy metal detection device for water quality according to claim 3 is characterized in that: The corresponding detection tube dual-purpose driving mechanism (2) further comprises a limiting pressure block (201), a magnetic pressure block (206) is provided inside the auxiliary positioning rod (202), and the outer side of the limiting pressure block (201) is slidably mounted inside the limiting pressure block (201) via the magnetic pressure block (206).

5. The portable real-time heavy metal detection device for water quality according to claim 4 is characterized in that: The detection tube moving assembly (3) further comprises a slideway positioning block (306) having the same number of slide grooves as that provided on the multilateral slide cavity block (301); a slide cavity clamping block (308) is slidably connected inside the slideway positioning block (306); a limit spring (310) is fixedly connected between the slide cavity clamping block (308) and the slideway positioning block (306).

6. The portable real-time heavy metal detection device for water quality according to claim 5 is characterized in that: An auxiliary slideway (305) having the same number of slide grooves as the multilateral slideway block (301) is provided on one side of the multilateral slideway block (301); a guide push block (309) is slidably connected inside the auxiliary slideway (305); an inclined push rod (307) is hingedly connected to the outer side of the guide push block (309); a side of the inclined push rod (307) away from the guide push block (309) is hingedly connected to the outer side of the slideway block (308); and the guide push block (309) is fixedly connected to a second vertical clamping rod (311).

7. The portable real-time heavy metal detection device for water quality according to claim 6 is characterized in that: The bottom of the auxiliary positioning rod (202) is rotatably connected to a main gear (203), the outer side of the main gear (203) is meshingly connected to an auxiliary gear (204), and the auxiliary gear (204) is rotatably connected to the inside of the detection box protective housing (101).

8. The portable real-time heavy metal detection device for water quality according to claim 7 is characterized in that: A gear clamping cavity (205) adapted to the external sliding rod (303) is provided at the top of the main gear (203), and an anti-slip pattern is provided on the inner wall of the gear clamping cavity (205).

9. A method for real-time detection of heavy metals in water quality, applied to the portable real-time detection device for heavy metals in water quality according to claims 1-8, characterized in that: The following steps are involved: S1: First, select the designated location to collect water samples. The staff will pass the test tube through multiple points to take samples. When taking samples, first take water twice from the shallow layer, middle layer and deep layer respectively; S2: The detection tube is placed between two sets of magnetic limit clamping ring blocks (403), and a color developer is added into the detection tube using a dropper. The rubber stopper is inserted into the detection tube without much effort. The corresponding detection tube dual-purpose driving mechanism (2) drives the detection tube wrapped by the detection tube corresponding clamping assembly (4) to move synchronously. The second arc-shaped sealing block (402), the first arc-shaped sealing block (401), the sealing sliding cavity block (102), and the detection box protective shell (101) wrap the detection tube to form a sealed state, and the upper bottle stopper of the detection tube and the arc-shaped pressure block (104) form a relative extrusion state, thereby completing the sealing state between the detection tube and the bottle stopper; S3: The corresponding detection tube dual-purpose driving mechanism (2) drives the detection tube corresponding clamping assembly (4) to return to the original position, and the auxiliary gear (204) drives the main gear (203), the limit block (312) and the external sliding rod (303) to rotate along the auxiliary positioning rod (202) through meshing with the main gear (203), thereby rotating and shaking the detection tube after the reagent is passed through; S4: The corresponding detection tube dual-purpose driving mechanism (2) is used to again cause the second arc-shaped sealing block (402), the first arc-shaped sealing block (401), the sealing sliding cavity block (102), and the detection box protective housing (101) to wrap the detection tube to form a sealed state, and wait for the heavy metal ions to react with the color developer to generate a colored compound. Then, a photoelectric colorimeter device is used to measure the absorbance of the solution, and the concentration of the heavy metal ions is calculated according to the standard curve to obtain a corresponding result.

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