Device and method for detecting and analyzing multiple metal ions in sewage

Abstract

The invention discloses a device and method for detecting and analyzing multiple metal ions in sewage, and belongs to the technical field of sewage heavy metal detection, the device comprises a detection box body, a sealing box cover, a purified water bottle, an adjusting valve, a water outlet hose, a filling head, a quantifying assembly, a fixing assembly and a positioning assembly, a limiting baffle is in contact with the outer wall of a protruding plate below by rotating a rotating cap in a quantifying assembly, at the moment, an opening of a water storage tank can face downwards, then purified water in the water storage tank can enter a water outlet hose, and finally the purified water is added into a colorimetric bottle through a filling head; and through the arrangement of the torsion spring shaft, automatic resetting can be realized after the rotary valve core is rotated and loosened, so that water added into the colorimetric bottle every time is quantitative.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage heavy metal detection, and in particular, relates to a detection and analysis device and method for multiple metal ions in sewage. Background Art

[0002] Industrial wastewater includes production wastewater, production sewage and cooling water, which refers to wastewater and waste liquid generated in the industrial production process, which contains industrial production materials, intermediate products, by-products and pollutants generated in the production process that are lost with water. Industrial wastewater is of various types and complex composition, containing various heavy metals. Direct discharge not only pollutes the environment, but also has great harm to human health. Therefore, it is necessary to take corresponding purification measures to dispose of it.

[0003] Heavy metals mentioned in environmental pollution actually mainly refer to metals or metalloids such as mercury, cadmium, lead, chromium, arsenic, etc., and also refer to general heavy metals with certain toxicity, such as copper, zinc, nickel, cobalt, tin, etc. We briefly discuss the hazards of heavy metals from several aspects, such as naturalness, toxicity, activity and persistence, biodegradability, bioaccumulation, and the additive effect on organisms.

[0004] Atomic absorption spectrometry is a new instrumental analysis method created in the 1950s. It complements atomic emission spectrometry, which is mainly used for qualitative analysis of inorganic elements, and becomes the main means of quantitative elemental analysis of inorganic compounds.

[0005] The atomic absorption analysis process is as follows: 1. Prepare the sample into a solution (and make a blank at the same time); 2. Prepare a series of calibration solutions (standard samples) with known concentrations of the analytical elements; 3. Measure the corresponding values ​​of the blank and standard samples in turn; 4. Draw a calibration curve based on the above corresponding values; 5. Measure the corresponding values ​​of the unknown sample; 6. Calculate the concentration value of the sample based on the calibration curve and the corresponding values ​​of the unknown sample.

[0006] In order to facilitate the treatment of heavy metal wastewater, it is often necessary to detect heavy metals in the wastewater. However, the existing heavy metal detection device needs to use a dropper to put about 10 ml of pure water into the colorimetric bottle to perform a blank calibration on the equipment. When carrying the detection device to detect sewage, due to environmental restrictions, it is not easy to add a certain amount of pure water into the colorimetric bottle, making it difficult to detect sewage in a complex environment. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In order to solve the problem that the existing heavy metal detection device in the above background technology needs to use a dropper to put about 10 ml of pure water into the inside of the colorimetric bottle to perform blank calibration on the equipment when in use, and when carrying the detection device to detect sewage, due to environmental restrictions, it is not easy to add a certain amount of pure water into the inside of the colorimetric bottle, making it difficult to detect sewage in a complex environment, the present invention adopts the following technical solution.

[0009] A detection and analysis device for multiple metal ions in sewage comprises a detection box body, a sealed box cover is hinged on one side at the upper end of the detection box body, a lock head is detachably connected to the outer wall of the sealed box cover, a lock buckle is arranged on the outer wall of the detection box body, a protrusion is arranged on the upper end of the detection box body, a lifting handle is fixedly connected to the outer wall of one side of the detection box body, a display screen is arranged on one side of the upper end of the detection box body, a colorimetric slot is arranged on the other side, a light shielding cover is plugged into the upper end of the colorimetric slot, a regulating valve is detachably connected to the inner top of the sealed box cover when it is opened, a jack is arranged on the outer wall of the sealed box cover at the upper end of the regulating valve, a pure water bottle is installed on the jack, and the regulating valve is opened. The bottom of the regulating valve is detachably connected to a water outlet hose, the inside of the sealed box cover is detachably connected to a plurality of pipe clamps, the pipe clamps fix the water outlet hose, the end of the water outlet hose is detachably connected to a filling head, the inner wall of the sealed box cover is detachably connected to a support seat, the filling head is snap-connected to the support seat, a quantitative component is installed inside the regulating valve, the quantitative component can release a quantitative amount of pure water each time, fixing components are installed on both sides of the upper end of the detection box body close to the sealed box cover, the fixing components fix the sealed box cover after it is opened, positioning components are installed on the support seat and the filling head, the positioning component can fix the filling head to the upper end of the support seat.

[0010] Preferably, an inner groove is provided on one side of the upper end of the detection box body, and a plurality of drainage holes are provided on the inner wall of the inner groove close to the outer wall of the detection box body.

[0011] Preferably, the outer wall of the water outlet hose is fixedly connected to an air intake branch pipe, the outer wall of the sealing box cover is provided with a through hole, the end of the air intake branch pipe is connected and communicated with the through hole, and a filter assembly is installed on the sealing box cover, which can filter the air entering the water outlet hose.

[0012] Preferably, the sealed box cover is fixedly connected to the inner wall near the display screen when it is closed, a protective cushion is provided on the outside of the storage box, a mounting groove is provided on one side of the storage box, a pull-out box is slidably connected to the inside of the mounting groove, an opening is provided on the front of the pull-out box, a plurality of Velcro straps are provided on the inner wall of the pull-out box, an inner buckle groove is provided on the outer wall of one side of the pull-out box, and the side wall of the pull-out box is snap-fitted with the inside of the mounting groove when closed.

[0013] Preferably, the inside of the sealed box cover is detachably connected to a wastewater tank, the upper end of the wastewater tank is fixedly connected to a water inlet pipe passing through the outer wall of the sealed box cover, the bottom of the wastewater tank is fixedly connected to a drain pipe passing through under the sealed box cover, and the outer walls of the water inlet pipe and the drain pipe are threadedly connected with sealing pipe caps.

[0014] Preferably, the quantitative component includes a rotating valve core, a torsion spring shaft, a water storage tank, a rotating cap, a limit baffle and a protruding plate. The internal rotation of the regulating valve is connected to the rotating valve core, one end of the rotating valve core is rotatably connected to the torsion spring shaft, the torsion spring shaft is connected to the inside of the regulating valve, the outer wall of the rotating valve core is provided with a water storage tank, the torsion spring shaft makes the water storage tank face upward under normal conditions, the other end of the rotating valve core is fixedly connected to the rotating shaft, the rotating shaft passes through the regulating valve and is fixedly connected to the rotating cap, the outer wall of the rotating cap is fixedly connected to the protruding plate, and the outer wall of the regulating valve located above and below the rotating cap is fixedly connected to the limit baffle.

[0015] Preferably, the positioning assembly includes a positioning column and a positioning socket, the bottom sides of the filling head are fixedly connected with the positioning column, the upper sides of the support seat are provided with positioning sockets, and the positioning column is inserted into the interior of the positioning socket.

[0016] Preferably, the fixing assembly includes a sliding groove, a sliding block and a locking rod. Sliding grooves are provided on both sides of the upper end of the detection box body. The sliding grooves on both sides are slidably connected to the inside of the sliding grooves. The sliding block is fixedly connected to the outer wall of the sealing box cover near the sliding block. The locking rod is pushed so that the sliding block passes through the detection box body and is plugged into the sealing box cover.

[0017] Preferably, the filter assembly includes a filter plate and a filter plate, the filter plate is plugged into the contact surface between the sealing box cover and the detection box body, the filter plate covers the inside of the through hole, and a through groove is provided on the outer wall of the sealing box cover located on the filter plate.

[0018] The present invention also discloses a method for detecting multiple metal ions in sewage, including the above-mentioned detection and analysis device for multiple metal ions in sewage. The detection method comprises the following steps:

[0019] Step 1: Filter and dilute the sample to be tested to eliminate interfering substances;

[0020] Step 2: Put pure water into a colorimetric bottle, and put the colorimetric bottle into the detection box to calibrate the detection box;

[0021] Step 3: Place the sample in a colorimetric bottle and then into the detection box. Select an appropriate wavelength for measurement and determine the content of the heavy metal atoms in the sample by measuring the degree of absorption of specific light.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By rotating the rotating cap in the quantitative assembly, the limit baffle contacts the outer wall of the lower protruding plate. At this time, the opening of the water storage tank can be facing downward, so that the pure water inside the water storage tank can enter the inside of the water outlet hose, and finally added to the colorimetric bottle through the filling head. The torsion spring shaft can be automatically reset after the rotating valve core is released by rotating, so that the water added to the colorimetric bottle each time is quantitative.

[0024] 2. The air inlet branch pipe is provided to allow external air to enter the interior of the water outlet hose, so that pure water can flow out from the filling head. The filter plate in the filter assembly can filter the air entering from the outside to prevent external impurities from contaminating the pure water. The through groove provided can make it easier to disassemble and install the filter plate.

[0025] 3. By inserting the locking rod in the fixed assembly into the sealed box cover, the supporting force of the sealed box cover can be increased to avoid the sealed box cover being closed during the detection process or due to the weight of the pure water bottle, and the posture of the sealed box cover after opening can be fixed and maintained.

[0026] 4. The filling head can be positioned and fixed by inserting the positioning column in the positioning assembly into the interior of the positioning socket to prevent the filling head from falling off from the interior of the support seat.

[0027] 5. The protective cushion can protect the display screen after the sealed box cover is closed. The items needed for the test can be fixed through the Velcro strap, and the pull-out box can be easily pulled out through the inner buckle groove.

[0028] 6. By unscrewing the sealing cap on the water inlet pipe, the wastewater generated in the test can be poured into the wastewater tank for storage. By unscrewing the sealing cap on the drain pipe, the sewage inside the wastewater tank can be discharged to the outside, which can avoid polluting the environment and can better store and collect the wastewater generated by the test, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of a device for detecting and analyzing multiple metal ions in sewage according to the present invention;

[0030] Figure 2 It is a schematic diagram of the detection box structure in the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the sealed box cover in the present invention;

[0032] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0033] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0034] Figure 6 It is a schematic diagram of the filling component structure in the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the regulating valve in the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the pull-out box in the present invention;

[0037] Fig. 9 It is a schematic diagram of the structure of the wastewater tank in the present invention.

[0038] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0039] 100, detection box; 101, lifting handle; 102, locking rod; 103, lock; 104, inner groove; 105, drainage hole; 106, colorimetric slot; 107, light shielding cover; 108, display screen; 109, sliding slot; 110, sliding block;

[0040] 200, sealed box cover; 201, lock; 202, protective cushion; 203, installation groove; 204, pure water bottle; 205, regulating valve; 206, water outlet hose; 207, air inlet branch pipe; 208, pipe clamp; 209, filling head; 210, support seat; 211, through hole; 212, through groove; 213, filter plate; 214, positioning column; 215, positioning socket; 216, rotating valve core; 217, torsion spring shaft; 218, water storage tank; 219, rotating cap; 220, limit baffle; 221, protruding plate; 222, pull-out box; 223, Velcro strap; 224, inner buckle groove; 225, waste water tank; 226, water inlet pipe; 227, drain pipe; 228, plugging pipe cap; 229, storage box. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0044] like Figure 1 As shown, it is a schematic diagram of the structure of a detection and analysis device for multiple metal ions in sewage according to a preferred embodiment of the present invention. The detection and analysis device for multiple metal ions in sewage in this embodiment includes a detection box 100, and a sealed box cover 200 is hinged on one side at the upper end of the detection box 100. The outer wall of the sealed box cover 200 is detachably connected with a lock 201, and the outer wall of the detection box 100 is provided with a lock buckle 103. The upper end of the detection box 100 is provided with a protrusion, and a lifting handle 101 is fixedly connected to the outer wall of one side of the detection box 100. In this embodiment, heavy metals in sewage are detected by the detection box 100, and the sealed box cover 200 and the detection box 100 can be buckled and locked by the lock 201 and the lock buckle 103, and the detection equipment is convenient to carry by the lifting handle 101.

[0045] like Figure 2 As shown, it is a schematic diagram of the detection box structure in this embodiment. A display screen 108 is provided on one side of the upper end of the detection box 100, and a colorimetric slot 106 is provided on the other side. A light-shielding cover 107 is inserted into the upper end of the colorimetric slot 106. In this embodiment, a colorimetric bottle is placed into the colorimetric slot 106 and the light-shielding cover 107 is inserted into the colorimetric bottle to shield the colorimetric bottle from light, so that the sample inside the colorimetric bottle can be detected.

[0046] like Figure 2 As shown, in order to make it easier to add samples or pure water into the cuvette bottle, in the present embodiment, an inner groove 104 is provided on one side of the upper end of the detection box 100, and a plurality of drainage holes 105 are provided on the inner wall of the inner groove 104 close to the outer wall of the detection box 100. The cuvette bottle can be placed inside by the concave setting of the inner groove 104, and the leaked pure water or sample can be discharged outward through the drainage holes 105 to avoid falling on the display screen 108 and other positions and causing damage to the detection box 100.

[0047] like Figure 3As shown, it is a schematic diagram of the sealed box cover structure in this embodiment. When the sealed box cover 200 is opened, the inner top is detachably connected to the regulating valve 205. The outer wall of the sealed box cover 200 above the regulating valve 205 is provided with a plug hole, and a pure water bottle 204 is installed on the plug hole. The bottom of the regulating valve 205 is detachably connected to a water outlet hose 206. The inside of the sealed box cover 200 is detachably connected to a plurality of pipe clamps 208, and the pipe clamps 208 fix the water outlet hose 206. The end of the water outlet hose 206 is detachably connected to a filling Head 209, the inner wall of the sealed box cover 200 is detachably connected with a support base 210, and the filling head 209 is snap-connected with the support base 210. In this embodiment, before opening the sealed box cover 200, the socket on the sealed box cover 200 is vertically downward and the pure water bottle 204 is connected to the socket. After the connection, the sealed box cover 200 is opened, and the pure water inside the pure water bottle 204 can be transported outward from the filling head 209 by opening the regulating valve 205, so that the pure water can be more conveniently added to the interior of the colorimetric bottle.

[0048] like Figure 5 As shown, it is a schematic diagram of the fixed component structure in this embodiment, sliding grooves 109 are set on both sides of the upper end of the detection box body 100, and sliding blocks 110 are slidably connected inside the sliding grooves 109 on both sides, and the sliding block 110 is fixedly connected with a locking rod 102 near the outer wall of the sealed box cover 200. The sliding block 110 is pushed so that the locking rod 102 passes through the detection box body 100 and is plugged into the sealed box cover 200. In this embodiment, the locking rod 102 is inserted into the sealed box cover 200, thereby increasing the supporting force of the sealed box cover 200, avoiding the sealing box cover 200 from being closed during the detection process or due to the weight of the pure water bottle 204, and can fix and maintain the posture of the sealed box cover 200 after opening.

[0049] It is worth noting that the above-mentioned sliding groove 109, sliding block 110 and locking rod 102 are fixed components in this embodiment, and the fixed components include but are not limited to the sliding groove 109, sliding block 110 and locking rod 102. As long as the components can fix the sealed box cover 200, they can be applied to this embodiment.

[0050] like Figure 6 As shown, it is a schematic diagram of the positioning component structure in this embodiment, positioning columns 214 are fixedly connected to both sides of the bottom of the filling head 209, and positioning holes 215 are provided on both sides of the upper end of the support seat 210. The positioning columns 214 are inserted into the interior of the positioning holes 215. In this embodiment, the filling head 209 can be positioned and fixed by inserting the positioning columns 214 into the interior of the positioning holes 215 to prevent the filling head 209 from falling off from the inside of the support seat 210.

[0051] It is worth noting that the above-mentioned positioning column 214 and positioning socket 215 are schematic diagrams of the positioning component structure in this embodiment. The positioning component includes but is not limited to the positioning column 214 and the positioning socket 215. As long as it is a component that can position and fix the filling head 209, it can be applied to this embodiment.

[0052] like Figure 7 As shown, it is a schematic diagram of the structure of the regulating valve in this embodiment, the regulating valve 205 is internally rotatably connected to a rotating valve core 216, one end of the rotating valve core 216 is rotatably connected to a torsion spring shaft 217, the torsion spring shaft 217 is connected to the inside of the regulating valve 205, the outer wall of the rotating valve core 216 is provided with a water storage tank 218, the torsion spring shaft 217 makes the water storage tank 218 face upward under normal conditions, the other end of the rotating valve core 216 is fixedly connected to a rotating shaft, the rotating shaft passes through the regulating valve 205 and is fixedly connected to a rotating cap 219, the outer wall of the rotating cap 219 is fixedly connected to a protruding plate 221, and the regulating valve 205 is located above and below the rotating cap 219. The outer wall is fixedly connected to a limit baffle 220. In the present embodiment, under normal conditions, the water tank 218 faces upwards so that the pure water in the pure water bottle 204 enters the water tank 218. By rotating the rotating cap 219, the limit baffle 220 contacts the outer wall of the protruding plate 221 below. At this time, the opening of the water tank 218 can be turned downwards, so that the pure water in the water tank 218 can enter the water outlet hose 206, and finally added to the colorimetric bottle through the filling head 209. The torsion spring shaft 217 is set so that it can be released and automatically reset after the rotating valve core 216 is rotated, so that the water added to the colorimetric bottle each time is quantitative.

[0053] It is worth noting that the internal volume of the water storage tank 218 can be set to different capacities such as 10 ml, 5 ml or 1 ml, and can be set according to actual needs.

[0054] It is also worth noting that the above-mentioned rotating valve core 216, torsion spring shaft 217, water tank 218, rotating cap 219, limit baffle 220 and protruding plate 221 are the quantitative components in this embodiment, and the quantitative components include but are not limited to the rotating valve core 216, torsion spring shaft 217, water tank 218, rotating cap 219, limit baffle 220 and protruding plate 221. As long as the components can transport a certain amount of pure water to the inside of the water outlet hose 206, they can be applied to this embodiment.

[0055] like Figure 3As shown, in order to enable pure water to be transported from the inside of the water outlet hose 206 and flow out from the filling head 209, in this embodiment, the outer wall of the water outlet hose 206 is fixedly connected to the air intake branch pipe 207, and the outer wall of the sealing box cover 200 is provided with a through hole 211, and the end of the air intake branch pipe 207 is connected and communicated with the through hole 211. In this embodiment, external air enters the inside of the water outlet hose 206 through the air intake branch pipe 207, so that pure water can flow out from the filling head 209.

[0056] like Figure 4 As shown, in order to prevent impurities such as dust in the external air from entering the water outlet hose 206 and contaminating the pure water, in this embodiment, a filter plate 213 is inserted into the contact surface between the sealed box cover 200 and the detection box body 100. The filter plate 213 covers the inside of the through hole 211, and a through groove 212 is provided on the outer wall of the sealed box cover 200 located on the filter plate 213. In this embodiment, the filter plate 213 can filter the air entering from the outside to prevent external impurities from contaminating the pure water, and the through groove 212 can make it more convenient to disassemble and install the filter plate 213.

[0057] It is worth noting that the above-mentioned filter plate 213 and filter plate 213 are the filter components in this embodiment, and the filter components include but are not limited to filter plate 213 and filter plate 213. As long as it is a component that can filter the air entering the water outlet hose 206, it can be applied to this embodiment.

[0058] like Figure 3 As shown in 8, it is a schematic diagram of the pull-out box structure in this embodiment, the sealed box cover 200 is located at the inner wall near the display screen 108 after closing, and a storage box 229 is fixedly connected, the outside of the storage box 229 is provided with a protective cushion 202, one side of the storage box 229 is provided with a mounting groove 203, the inside of the mounting groove 203 is slidably connected with a pull-out box 222, the front of the pull-out box 222 is provided with an opening, the inner wall of the pull-out box 222 is provided with a plurality of Velcro straps 223, and the outer wall of one side of the pull-out box 222 is provided with an inner buckle groove 224, the side wall of the pull-out box 222 is snap-fitted with the inside of the mounting groove 203 when closed, in this embodiment, the display screen 108 can be protected after the sealed box cover 200 is closed by the protective cushion 202, the items needed in the test can be fixed by the Velcro strap 223, and the pull-out box 222 is convenient to be pulled out through the inner buckle groove 224.

[0059] like Fig. 9As shown, it is a schematic diagram of the wastewater tank structure in this embodiment, the interior of the sealed box cover 200 is detachably connected to the wastewater tank 225, the upper end of the wastewater tank 225 is fixedly connected to an inlet pipe 226 that passes through the outer wall of the sealed box cover 200, and the bottom of the wastewater tank 225 is fixedly connected to a drain pipe 227 that passes through the bottom of the sealed box cover 200, and the outer walls of the inlet pipe 226 and the drain pipe 227 are threadedly connected with a blocking pipe cap 228. In this embodiment, by unscrewing the blocking pipe cap 228 on the inlet pipe 226, the wastewater generated in the test can be poured into the interior of the wastewater tank 225 for storage, and by unscrewing the blocking pipe cap 228 on the drain pipe 227, the sewage inside the wastewater tank 225 can be discharged to the outside, which can avoid polluting the environment and can better store and collect the wastewater generated by the test, which is more convenient.

[0060] In summary, the specific use of this embodiment is as follows:

[0061] When testing sewage, first turn the jack vertically downward and connect the pure water bottle 204 to the jack. After the connection is completed, open the sealed box cover 200, and then push the sliding block 110 in the fixed assembly to make the locking rod 102 pass through the detection box body 100 and plug into the sealed box cover 200. In this embodiment, the locking rod 102 is inserted into the sealed box cover 200, thereby increasing the supporting force of the sealed box cover 200 to avoid the sealed box cover 200 being closed during the detection process or due to the weight of the pure water bottle 204, and the posture of the sealed box cover 200 after opening can be fixed and maintained. Then, the pull-out box 222 is pulled outward through the inner buckle groove 224, and the required tools are taken out and placed inside the inner groove 104. By rotating the rotating cap 219 in the quantitative assembly, the limit baffle 220 contacts the outer wall of the lower protruding plate 221. At this time, the opening of the water storage tank 218 can be turned downward, so that the water storage tank 2 The pure water in 18 enters the water outlet hose 206, and is finally added to the inside of the colorimetric bottle through the filling head 209. The torsion spring shaft 217 is set so that it can be automatically reset after the rotary valve core 216 is rotated and released, so that the water added to the colorimetric bottle each time is quantitative. The filter plate 213 in the filter assembly can filter the air entering from the outside to prevent external impurities from contaminating the pure water, and the through groove 212 can more conveniently remove and install the filter plate 213. Then, the colorimetric bottle storing the pure water is placed in the colorimetric slot 106 and the light shielding cover 107 is installed to calibrate the detection box 100. After calibration, unscrew the sealing cap 228 on the water inlet pipe 226 and pour the pure water into the water inlet pipe 226. After pre-treating the sample, put it into the colorimetric bottle. Then, put the colorimetric bottle into the colorimetric slot 106 and install the light shielding cover 107 for detection and analysis.

[0062] This embodiment also discloses a method for detecting multiple metal ions, which comprises the following steps:

[0063] Step 1: Filter and dilute the sample to be tested to eliminate interfering substances;

[0064] Step 2: Put pure water into a colorimetric bottle, and put the colorimetric bottle into the detection box 100 to calibrate the detection box 100;

[0065] Step 3: Put the sample into a colorimetric bottle and then into the detection box 100, select an appropriate wavelength for measurement, and determine the content of the heavy metal atoms in the sample by measuring the degree of absorption of specific light.

[0066] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A detection and analysis device for multiple metal ions in sewage, comprising a detection box (100), a sealed box cover (200) is hingedly connected to one side of the upper end of the detection box (100), a lock (201) is detachably connected to the outer wall of the sealed box cover (200), a lock buckle (103) is provided on the outer wall of the detection box (100), a protrusion is provided on the upper end of the detection box (100), a lifting handle (101) is fixedly connected to the outer wall of one side of the detection box (100), a display screen (108) is provided on one side of the upper end of the detection box (100), and a colorimetric slot (106) is provided on the other side, and a light shielding cover (107) is inserted at the upper end of the colorimetric slot (106), characterized in that: The top of the inner side of the sealed box cover (200) when opened is detachably connected to a regulating valve (205); an outer wall of the sealed box cover (200) above the regulating valve (205) is provided with a plug hole, on which a pure water bottle (204) is installed; the bottom of the regulating valve (205) is detachably connected to a water outlet hose (206); the inside of the sealed box cover (200) is detachably connected to a plurality of pipe clamps (208); the pipe clamps (208) fix the water outlet hose (206); the end of the water outlet hose (206) is detachably connected to a filling head (209); the sealed box cover (20 0) is detachably connected to the inner wall of the detection box body (100), the filling head (209) is snap-connected with the support seat (210), a quantitative component is installed inside the regulating valve (205), and the quantitative component can release a quantitative amount of pure water each time, and fixing components are installed on both sides of the upper end of the detection box body (100) close to the sealed box cover (200), and the fixing components fix the sealed box cover (200) after it is opened, and a positioning component is installed on the support seat (210) and the filling head (209), and the positioning component can fix the filling head (209) to the upper end of the support seat (210).

2. The detection and analysis device for multiple metal ions in sewage according to claim 1, characterized in that: An inner groove (104) is provided on one side of the upper end of the detection box body (100), and a plurality of drainage holes (105) are provided on the inner wall of the inner groove (104) close to the outer wall of the detection box body (100).

3. The detection and analysis device for multiple metal ions in sewage according to claim 2, characterized in that: The outer wall of the water outlet hose (206) is fixedly connected to an air intake branch pipe (207), the outer wall of the sealed box cover (200) is provided with a through hole (211), the end of the air intake branch pipe (207) is connected to and communicates with the through hole (211), and a filter assembly is installed on the sealed box cover (200), and the filter assembly can filter the air entering the water outlet hose (206).

4. The detection and analysis device for multiple metal ions in sewage according to claim 3, characterized in that: A storage box (229) is fixedly connected to the inner wall of the sealed box cover (200) located near the display screen (108) when the sealed box cover (200) is closed, a protective cushion (202) is arranged on the outside of the storage box (229), a mounting groove (203) is arranged on one side of the storage box (229), a pull-out box (222) is slidably connected inside the mounting groove (203), an opening is arranged on the front side of the pull-out box (222), a plurality of Velcro straps (223) are arranged on the inner wall of the pull-out box (222), an inner buckle groove (224) is arranged on the outer wall of one side of the pull-out box (222), and a side wall of the pull-out box (222) is snap-fitted with the inside of the mounting groove (203) when the pull-out box (222) is closed.

5. The detection and analysis device for multiple metal ions in sewage according to claim 4, characterized in that: A wastewater tank (225) is detachably connected to the interior of the sealed box cover (200); a water inlet pipe (226) passing through the outer wall of the sealed box cover (200) is fixedly connected to the upper end of the wastewater tank (225); a drain pipe (227) passing through the bottom of the sealed box cover (200) is fixedly connected to the bottom of the wastewater tank (225); and a plugging pipe cap (228) is threadedly connected to the outer walls of the water inlet pipe (226) and the drain pipe (227).

6. The detection and analysis device for multiple metal ions in sewage according to claim 5, characterized in that: The quantitative assembly comprises a rotary valve core (216), a torsion spring shaft (217), a water storage tank (218), a rotating cap (219), a limit baffle (220) and a protruding plate (221); the interior of the regulating valve (205) is rotatably connected to the rotary valve core (216); one end of the rotary valve core (216) is rotatably connected to the torsion spring shaft (217); the torsion spring shaft (217) is connected to the interior of the regulating valve (205); and the outer wall of the rotary valve core (216) is provided with A water storage tank (218) is provided, and a torsion spring shaft (217) makes the water storage tank (218) face upward in a normal state. The other end of the rotating valve core (216) is fixedly connected to a rotating shaft, and the rotating shaft passes through the regulating valve (205) and is fixedly connected to a rotating cap (219). The outer wall of the rotating cap (219) is fixedly connected to a protruding plate (221), and the outer wall of the regulating valve (205) located above and below the rotating cap (219) is fixedly connected to a limit baffle (220).

7. The detection and analysis device for multiple metal ions in sewage according to claim 6, characterized in that: The positioning assembly comprises a positioning column (214) and a positioning socket (215), the positioning columns (214) are fixedly connected to both sides of the bottom of the filling head (209), the positioning sockets (215) are arranged on both sides of the upper end of the support seat (210), and the positioning columns (214) are inserted into the interior of the positioning sockets (215).

8. The detection and analysis device for multiple metal ions in sewage according to claim 7, characterized in that: The fixing assembly comprises a sliding groove (109), a sliding block (110) and a locking rod (102); the sliding grooves (109) are arranged on both sides of the upper end of the detection box body (100); the sliding blocks (110) are slidably connected inside the sliding grooves (109) on both sides; the sliding blocks (110) are fixedly connected to the locking rod (102) near the outer wall of the sealing box cover (200); the sliding block (110) is pushed so that the locking rod (102) passes through the detection box body (100) and is plugged into the sealing box cover (200).

9. The detection and analysis device for multiple metal ions in sewage according to claim 8, characterized in that: The filter assembly comprises a filter plate (213) and a filter plate (213); the filter plate (213) is plugged into the contact surface between the sealed box cover (200) and the detection box body (100); the filter plate (213) covers the inside of the through hole (211); and a through groove (212) is provided on the outer wall of the sealed box cover (200) located on the filter plate (213).

10. A method for detecting multiple metal ions in sewage, characterized in that: The detection and analysis device for multiple metal ions in sewage according to any one of items 1 to 9 above comprises the following steps: Step 1: Filter and dilute the sample to be tested to eliminate interfering substances; Step 2: Put pure water into a colorimetric bottle, and put the colorimetric bottle into the detection box (100) for calibrating the detection box (100); Step 3: Place the sample in a colorimetric bottle and then into the detection box (100), select an appropriate wavelength for measurement, and determine the content of the heavy metal atoms in the sample by measuring the degree of absorption of specific light.

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