A soil sample testing solution preparation device for soil monitoring

Abstract

The purpose of this invention is to provide a soil sample preparation device for soil monitoring, addressing the problem of low preparation efficiency in existing soil sample preparation technologies. It includes a mounting box, a sample preparation component, a sample filtration component, and a filtrate collection component. The sample preparation component includes a first slide rail arranged longitudinally along the mounting box and a beaker mechanism slidably mounted on the first slide rail. The sample filtration component is located below the sample preparation component and includes a second slide rail arranged transversely along the mounting box and a filter frame mechanism slidably mounted on the second slide rail. The filtrate collection component is located below the sample filtration component and includes a first chute plate arranged longitudinally along the mounting box and a sample cup conveying mechanism slidably mounted on the first chute plate. This application achieves the preparation, filtration, and collection of the sample sample through multiple components in sequence, improving the preparation efficiency and accuracy of the sample sample.

Description

Technical Field

[0001] This invention belongs to the field of soil monitoring, and in particular relates to a soil sample testing solution preparation device for soil monitoring. Background Technology

[0002] Soil heavy metal pollution monitoring is an important part of soil environmental monitoring. Heavy metal pollution in soil mainly includes five heavy metal elements: lead, chromium, cadmium, mercury, and arsenic. These five elements are known as the "five poisons" of heavy metals in soil pollution. Therefore, it is necessary to regularly test the content of these five elements during soil environmental monitoring.

[0003] Heavy metal detection in soil requires first sampling the soil, then digesting the sample to prepare a detection solution, and finally adding heavy metal detection reagents such as lead, chromium, cadmium, mercury, and arsenic to the solution for testing. Therefore, the preparation of the detection solution directly determines the precision and accuracy of heavy metal detection. Currently, soil detection solutions are prepared manually by operators, resulting in low efficiency, long testing cycles, and hindering rapid detection of multiple samples. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a soil sample testing solution preparation device for soil monitoring, which solves the problem of low soil testing solution preparation efficiency in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a soil sample testing solution preparation device for soil monitoring, comprising a mounting box, and:

[0006] Sample preparation components,

[0007] The sample preparation assembly includes a first slide rail arranged longitudinally along the mounting box, and a beaker mechanism slidably arranged on the first slide rail. The first slide rail is provided with a soil sampling station, a sample dilution and pouring station, and a sample heating station arranged sequentially from front to back along the mounting box.

[0008] Sample fluid filtration assembly

[0009] The sample solution filtration assembly is located below the sample solution preparation assembly. The sample solution filtration assembly includes a second slide rail arranged laterally along the mounting box and a filter frame mechanism slidably arranged on the second slide rail. The second slide rail is arranged sequentially from right to left along the mounting box as a filter membrane installation station, a filtration station, a filter membrane disposal station, and a filter frame cleaning station.

[0010] Filtrate collection assembly

[0011] The filtrate collection assembly is located below the sample filtrate filtration assembly. The filtrate collection assembly includes a first slide plate arranged longitudinally along the mounting box and a sample cup conveying mechanism slidably arranged on the first slide plate. The first slide plate is provided with a sample cup placement station and a sample filtrate collection station in sequence along the direction from front to back of the mounting box.

[0012] As an optional solution, the beaker mechanism includes a first slider, a beaker, a first clamp, a first rotating shaft, a first motor, and a first chain conveyor module;

[0013] The beaker is snapped onto the first clamp, and a first rotating shaft is installed on both sides of the first clamp. The two first rotating shafts are rotatably mounted on two first sliders, and the two first sliders are slidably mounted on the first slide rails on both sides.

[0014] One of the first sliders is also equipped with a first motor. The power output shaft of the first motor is fixedly connected to the first rotating shaft. A first chain conveying module for driving the first slider to move along the first slide rail is provided between the front and rear ends of the first slide rail. The side wall of the first slider is fixedly connected to the chain of the first chain conveying module.

[0015] As an optional solution, the filter frame mechanism includes a second slider, a filter frame, a second clamp, a second rotating shaft, a second chain conveyor module, a limiting ring platform, and gears;

[0016] The outer wall of the filter frame is provided with several water flow holes. A limiting ring platform is installed on the outer wall of the top of the filter frame. The filter frame is snapped onto the second clamp. A second rotating shaft is installed on both sides of the second clamp. The two second rotating shafts are rotatably installed on the two second sliders respectively. Gears are also fixedly installed on the second rotating shafts. The two second sliders are slidably arranged on the second slide rails on both sides respectively.

[0017] A second chain conveying module for driving the second slider to move along the second slide rail is provided between the left and right ends of the second slide rail, and the side wall of the second slider is fixedly connected to the chain of the second chain conveying module.

[0018] As an optional solution, the sample cup conveying mechanism includes a placement plate, a placement groove, a sliding plate, a first cylinder, a second cylinder, and a first guide column;

[0019] The two sides of the sliding plate are respectively slidably disposed on two first sliding groove plates, and the telescopic end of the second cylinder is installed on the rear side wall of the sliding plate. The second cylinder is used to push and pull the sliding plate to slide along the first sliding groove plate.

[0020] A first cylinder that extends and retracts vertically is mounted on the sliding plate. The placement plate is mounted on the extension end of the first cylinder. The placement plate has a placement groove for placing sample cups. Several first guide posts are also mounted on the placement plate. The first guide posts slide and guide the sliding plate. The sample liquid receiving station is located directly below the filtration station.

[0021] As an optional solution, a pure water nozzle is provided above the sample solution dilution and pouring station. The water inlet of the pure water nozzle is connected to a first water supply pipe installed on the top wall of the installation box. The first water supply pipe is connected to an external pure water supply module.

[0022] The sample solution dilution and pouring station is located above one side of the filtration station.

[0023] As an optional solution, an electric heating furnace is installed on the inner wall of the mounting box directly below the sample heating station, an exhaust screen is installed on the top wall of the mounting box directly above the electric heating furnace, and an exhaust fan for heat dissipation is installed on the side wall of the mounting box behind the electric heating furnace.

[0024] As an optional solution, a filter membrane mounting module for mounting the filter membrane onto the inner wall of the filter frame is provided above the filter membrane mounting station. The filter membrane mounting module includes a feeding roller, a receiving roller, a filter membrane roll, a third cylinder, a first mounting plate, a second guide rod, a spring, a push ring, a push column, and a connecting rod.

[0025] Parallel feeding rollers and receiving rollers are installed inside the mounting box. The feeding rollers and receiving rollers are located on the outside of the two second slide rails. The filter membrane roll is installed on the feeding roller. The front end of the filter membrane roll is fixed on the receiving roller. Several filter membranes are evenly spaced on the filter membrane roll. The filter membranes and the filter membrane roll are connected by an easy-tear opening.

[0026] A third cylinder that extends and retracts vertically is installed on the top wall of the mounting box. A first mounting plate is fixed to the extension end of the third cylinder. A spring is installed on the lower end face of the first mounting plate. A push column is installed on the lower end of the spring. A second guide rod is installed on the upper end of the push column. The second guide rod slides and guides the first mounting plate.

[0027] The lower end face of the first mounting plate is also equipped with several connecting rods. The push ring is installed at the lower end of the several connecting rods. The outer diameter of the push column is smaller than the inner diameter of the filter frame. The inner diameter of the push ring is larger than the outer diameter of the filter frame. When the spring is in a free state, the lower end face of the push ring is higher than the lower end face of the push column.

[0028] As an optional solution, a filter membrane pushing module for pushing the filter membrane out of the filter frame is provided above the filter membrane discarding station. The filter membrane pushing module includes a first mounting bracket, a fourth cylinder, a second mounting plate, a push rod, and a first rack.

[0029] The first mounting bracket is horizontally arranged between two second slide rails. The fourth cylinder, which extends and retracts in the vertical direction, is mounted on the first mounting bracket. The second mounting plate is mounted on the bottom end of the fourth cylinder. Several push rods are mounted on the lower end face of the second mounting plate. Several through holes for the push rods to pass through are opened on the bottom end face of the filter frame.

[0030] The first mounting frame has a first rack installed on both sides for cooperating with gears to drive the filter frame to flip. The first rack is arranged parallel to the second slide rail. A waste collection box for collecting filter membrane waste is provided below the filter membrane discarding station.

[0031] As an optional solution, a cleaning module for cleaning and drying the filter frame is installed on the mounting box at the filter frame cleaning station. The cleaning module includes a second mounting bracket, a fifth cylinder, a protective cover, a second rack, a water vapor nozzle, a second water supply pipe, an air supply pipe, and a wastewater collection tank.

[0032] The second mounting bracket is horizontally arranged between the two second slide rails. The fifth cylinder, which extends and retracts in the vertical direction, is mounted on the second mounting bracket. The extension end of the fifth cylinder is installed on the protective cover cylinder with an opening at the bottom. The inner diameter of the protective cover cylinder is larger than the outer diameter of the filter frame.

[0033] The second mounting bracket has a second rack installed on both sides for cooperating with gears to drive the filter frame to flip. The second rack is arranged parallel to the second slide rail.

[0034] Below the filter frame cleaning station, there are water vapor nozzles for rinsing the filter frame and a waste collection box for collecting cleaning wastewater. The water vapor nozzles are connected to the second water supply pipe and the air supply pipe respectively through a three-way connector. The second water supply pipe and the air supply pipe are each equipped with a solenoid valve for controlling opening and closing. The input ends of the second water supply pipe and the air supply pipe are connected to the external pure water supply module and the external air supply module respectively.

[0035] As an optional solution, the front side wall of the installation box is provided with a first switch door to facilitate placing soil samples into beakers and placing sample beakers into placement slots, and a touch screen computer is also installed on the front side wall of the installation box;

[0036] The installation box has a second door on the left side wall for easy removal of the waste collection box and the wastewater collection box; the installation box has a third door on the right side wall for easy replacement of the film roll.

[0037] As described above, the soil sample testing solution preparation device for soil monitoring according to the present invention has at least the following beneficial effects:

[0038] 1. This application uses a sample preparation component to prepare the sample test solution, a sample filtration component to filter the prepared sample test solution, and a filtrate collection component to collect the filtered sample test solution, thereby improving the preparation efficiency of the sample test solution and reducing the operational difficulty for operators.

[0039] 2. This application improves the efficiency and accuracy of filter membrane application by setting a filter membrane application module to quickly apply the filter membrane to the filter frame for filtering the sample test solution. After the sample test solution is filtered, the filter membrane push-out module and the cleaning module are used to discard the waste filter membrane and clean the filter frame, avoiding the harm to the operator caused by the sample test solution containing acidic corrosive liquid during the manual disposal and cleaning process. Attached Figure Description

[0040] Figure 1 The diagram shown is a schematic diagram of the front structure of the soil sample testing solution preparation device of the present invention.

[0041] Figure 2 The diagram shows the structure of the soil sample testing solution preparation device of the present invention during sample addition.

[0042] Figure 3 The diagram shown is a schematic diagram of the rear structure of the soil sample testing solution preparation device of the present invention.

[0043] Figure 4 The image shown is an axonometric view of the interior of the mounting box of the present invention.

[0044] Figure 5 The image shown is a top view of the interior of the mounting box of this invention.

[0045] Figure 6 The diagram shown is a structural schematic of the filtrate collection assembly of the present invention.

[0046] Figure 7 The diagram shown is a schematic representation of the sample preparation assembly of the present invention.

[0047] Figure 8 The diagram shown is a structural schematic of the sample liquid filtration assembly of the present invention.

[0048] Figure 9 The diagram shown is a structural schematic of the filter frame of the present invention.

[0049] In the diagram: 1-Installation box; 101-First door switch; 102-Touchscreen computer; 103-Second door switch; 104-Third door switch;

[0050] 2-Sample preparation assembly; 201-First slide rail; 202-First slider; 203-Beaker; 204-First clamp; 205-First rotating shaft; 206-First motor; 207-First chain conveyor module; 208-Pure water nozzle; 209-First water supply pipe; 210-Electric heating furnace; 211-Exhaust screen; 212-Exhaust fan;

[0051] 3-Sample solution filtration assembly; 301-Second slide rail; 302-Second slider; 303-Filter frame; 304-Second clamp; 305-Second rotating shaft; 306-Second chain conveyor module; 307-Limiting ring platform; 308-Gear; 309-Filter membrane; 310-Discharge roller; 311-Receiving roller; 312-Filter membrane roll; 313-Third cylinder; 314-First mounting plate; 315-Second guide rod; 316-Spring; 317-Push ring; 318-Push column; 319-Connecting rod; 320-First mounting bracket; 321-Fourth cylinder; 322-Second mounting plate; 323-Push rod; 324-First rack; 325-Waste collection box; 326-Second mounting bracket; 327-Fifth cylinder; 328-Proof sleeve; 329-Second rack; 330-Water vapor nozzle; 331-Second water pipe; 332-Air pipe; 333-Wastewater collection box;

[0052] 4-Filtrate collection assembly; 401-First chute plate; 402-Placement plate; 403-Placement groove; 404-Sliding plate; 405-First cylinder; 406-Second cylinder; 407-First guide column; 408-Sample cup. Detailed Implementation

[0053] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0054] Please see Figures 1 to 9 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0055] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0056] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 This invention provides a soil sample testing solution preparation device for soil monitoring, comprising a mounting box 1, and:

[0057] Sample preparation component 2,

[0058] The sample preparation assembly 2 includes a first slide rail 201 arranged longitudinally along the mounting box 1, and a beaker mechanism slidably arranged on the first slide rail 201. The first slide rail 201 is arranged sequentially from front to back along the mounting box 1 as a soil sampling station, a sample dilution and pouring station, and a sample heating station.

[0059] Sample liquid filtration component 3,

[0060] The sample liquid filtration assembly 3 is located below the sample liquid preparation assembly 2. The sample liquid filtration assembly 3 includes a second slide rail 301 arranged laterally along the mounting box 1, and a filter frame mechanism slidably arranged on the second slide rail 301. The second slide rail 301 is arranged sequentially from right to left along the mounting box 1 as follows: filter membrane installation station, filter station, filter membrane disposal station, and filter frame cleaning station.

[0061] Filtrate collection component 4,

[0062] The filtrate collection assembly 4 is located below the sample liquid filtration assembly 3. The filtrate collection assembly 4 includes a first slide plate 401 arranged longitudinally along the mounting box 1, and a sample cup conveying mechanism slidably arranged on the first slide plate 401. The first slide plate 401 is provided with a sample cup placement station and a sample liquid collection station arranged sequentially from front to back along the mounting box 1.

[0063] In this embodiment, the sample preparation component 2 prepares the sample test solution, the sample filtration component 3 filters the prepared sample test solution, and finally the filtrate collection component 4 collects the filtered sample test solution. The above steps improve the preparation efficiency of the sample test solution and reduce the operation difficulty for operators.

[0064] Please see Figure 1 , Figure 4 , Figure 5 and Figure 7The beaker mechanism includes a first slider 202, a beaker 203, a first clamp 204, a first rotating shaft 205, a first motor 206, and a first chain conveyor module 207;

[0065] The beaker 203 is snapped onto the first clamp 204. The first clamp 204 has a first rotating shaft 205 on both sides. The two first rotating shafts 205 are rotatably mounted on two first sliders 202 respectively. The two first sliders 202 are slidably mounted on the first slide rails 201 on both sides respectively.

[0066] One of the first sliders 202 is also equipped with a first motor 206. The power output shaft of the first motor 206 is fixedly connected to the first rotating shaft 205. A first chain conveying module 207 for driving the first slider 202 to move along the first slide rail 201 is provided between the front and rear ends of the first slide rail 201. The side wall of the first slider 202 is fixedly connected to the chain of the first chain conveying module 207.

[0067] In this embodiment, the first chain conveyor module 207 drives the beaker mechanism to move between the soil sampling station, the sample liquid dilution and pouring station and the sample heating station, and the first motor 206 is a brake motor.

[0068] Please see Figure 1 , Figure 4 , Figure 5 , Figure 8 and Figure 9 The filter frame mechanism includes a second slider 302, a filter frame 303, a second clamp 304, a second rotating shaft 305, a second chain conveyor module 306, a limiting ring platform 307, and a gear 308.

[0069] The filter frame 303 has several water flow holes on its outer wall. A limiting ring platform 307 is installed on the outer wall of the top of the filter frame 303. The filter frame 303 is snapped onto the second clamp 304. A second rotating shaft 305 is installed on both sides of the second clamp 304. The two second rotating shafts 305 are rotatably mounted on two second sliders 302 respectively. A gear 308 is also fixedly installed on the second rotating shaft 305. The two second sliders 302 are slidably mounted on the two side second slide rails 301 respectively.

[0070] A second chain conveying module 306 for driving the second slider 302 to move along the second slide rail 301 is provided between the left and right ends of the second slide rail 301. The side wall of the second slider 302 is fixedly connected to the chain of the second chain conveying module 306.

[0071] In this embodiment, the second chain conveyor module 306 drives the filter frame mechanism to move between the filter membrane installation station, the filter station, the filter membrane discard station, and the filter frame cleaning station; when the gear 308 is not engaged, the axis of the filter frame 303 is always located in the vertical direction under the action of gravity.

[0072] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The sample cup conveying mechanism includes a placement plate 402, a placement groove 403, a sliding plate 404, a first cylinder 405, a second cylinder 406, and a first guide post 407.

[0073] The two sides of the sliding plate 404 are respectively slidably disposed on the two first sliding groove plates 401. The telescopic end of the second cylinder 406 is installed on the rear side wall of the sliding plate 404. The second cylinder 406 is used to push and pull the sliding plate 404 to slide along the first sliding groove plate 401.

[0074] A first cylinder 405 that extends and retracts vertically is mounted on the sliding plate 404. A placement plate 402 is mounted on the extension end of the first cylinder 405. The placement plate 402 has a placement groove 403 for placing a sample cup 408. A plurality of first guide posts 407 are also mounted on the placement plate 402. The first guide posts 407 slide and guide the sliding plate 404. The sample liquid receiving station is located directly below the filtration station.

[0075] In this embodiment, initially, the second cylinder 406 drives the sample cup conveying mechanism to move to the sample cup placement station to place the sample cup 408. After placement, the second cylinder 406 drives the sample cup conveying mechanism to move to the sample liquid collection station, and the first cylinder 405 drives the sample cup 408 to move upward and fit onto the outside of the filter frame 303 for filtration.

[0076] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 A pure water nozzle 208 is provided above the sample solution dilution and pouring station. The water inlet of the pure water nozzle 208 is connected to a first water supply pipe 209 installed on the top wall of the installation box 1. The first water supply pipe 209 is connected to an external pure water supply module.

[0077] The sample solution dilution and pouring station is located above one side of the filtration station.

[0078] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 An electric heating furnace 210 is installed on the inner wall of the mounting box 1 directly below the sample heating station. An exhaust net 211 is installed on the top wall of the mounting box 1 directly above the electric heating furnace 210. An exhaust fan 212 for heat dissipation is installed on the side wall of the mounting box 1 behind the electric heating furnace 210.

[0079] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 Above the filter membrane installation station is a filter membrane fitting module for fitting the filter membrane 309 onto the inner wall of the filter frame 303. The filter membrane fitting module includes a feeding roller 310, a receiving roller 311, a filter membrane roll 312, a third cylinder 313, a first mounting plate 314, a second guide rod 315, a spring 316, a push ring 317, a push column 318, and a connecting rod 319.

[0080] Parallel feeding rollers 310 and receiving rollers 311 are installed inside the mounting box 1. The feeding rollers 310 and receiving rollers 311 are located on the outer sides of the two second slide rails 301. The filter membrane roll 312 is installed on the feeding roller 310. The front end of the filter membrane roll 312 is fixed on the receiving roller 311. Several filter membranes 309 are evenly spaced on the filter membrane roll 312. The filter membranes 309 are connected to the filter membrane roll 312 by an easy-tear opening.

[0081] A third cylinder 313 that extends and retracts vertically is installed on the top wall of the mounting box 1. A first mounting plate 314 is fixed to the extension end of the third cylinder 313. A spring 316 is installed on the lower end face of the first mounting plate 314. A push column 318 is installed on the lower end of the spring 316. A second guide rod 315 is installed on the upper end of the push column 318. The second guide rod 315 slides and guides the first mounting plate 314.

[0082] The lower end face of the first mounting plate 314 is also equipped with a plurality of connecting rods 319. The push ring 317 is installed at the lower end of the plurality of connecting rods 319. The outer diameter of the push column 318 is smaller than the inner diameter of the filter frame 303. The inner diameter of the push ring 317 is larger than the outer diameter of the filter frame 303. When the spring 316 is in a free state, the lower end face of the push ring 317 is higher than the lower end face of the push column 318.

[0083] In this embodiment, when the filter membrane 309 is fitted, the feeding roller 310 and the receiving roller 311 move, causing a filter membrane 309 to move above the filter frame 303. The third cylinder 313 pushes out, and the pusher 318 abuts against the filter membrane 309, causing the filter membrane 309 to separate from the filter membrane roll 312. The pusher 318 pushes the filter membrane 309 into the filter frame 303. When the bottom end of the pusher 318 abuts against the bottom end of the filter frame 303, the spring 316 is compressed, and the pusher ring 317 continues to move downward, pressing the edge of the filter membrane against the limiting ring platform 307. The third cylinder 313 retracts, driving the filter membrane fitting module back to its initial position. Through the above steps, the filter membrane 309 is completely adhered to the inner wall of the filter frame 303. During filtration, the filter membrane 309 will not move due to the weight of the mixture, resulting in a good filtration effect.

[0084] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 Above the filter membrane discarding station is a filter membrane pushing module for pushing the filter membrane 309 out of the filter frame 303. The filter membrane pushing module includes a first mounting bracket 320, a fourth cylinder 321, a second mounting plate 322, a push rod 323 and a first rack 324.

[0085] The first mounting bracket 320 is horizontally arranged between two second slide rails 301. The fourth cylinder 321, which extends and retracts in the vertical direction, is mounted on the first mounting bracket 320. The second mounting plate 322 is mounted on the bottom end of the fourth cylinder 321. A plurality of push rods 323 are mounted on the lower end face of the second mounting plate 322. A plurality of through holes for the push rods 323 to pass through are opened on the bottom end face of the filter frame 303.

[0086] The first mounting bracket 320 has a first rack 324 installed on both sides for cooperating with the gear 308 to drive the filter frame 303 to rotate. The first rack 324 is arranged parallel to the second slide rail 301. A waste collection box 325 for collecting waste filter membrane 309 is provided below the filter membrane discarding station.

[0087] In this embodiment, after the sample test liquid is filtered, the second chain conveying module 306 drives the filter frame mechanism to move towards the filter membrane disposal station. During the movement, the first rack 324 meshes with the gear 308, driving the filter frame 303 to rotate 180°. When the filter frame 303 moves into place, the fourth cylinder 321 pushes out, and the push rod 323 inserts into the through hole on the bottom end face of the filter frame 303, pushing the used filter membrane 309 into the waste collection box 325.

[0088] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 The installation box 1 at the filter frame cleaning station is also equipped with a cleaning module for cleaning and drying the filter frame 303. The cleaning module includes a second mounting bracket 326, a fifth cylinder 327, a protective cover 328, a second rack 329, a water vapor nozzle 330, a second water supply pipe 331, an air supply pipe 332, and a wastewater collection box 333.

[0089] The second mounting bracket 326 is horizontally arranged between the two second slide rails 301. The fifth cylinder 327, which extends and retracts in the vertical direction, is mounted on the second mounting bracket 326. The protective cover 328 with an open bottom end is installed on the extension end of the fifth cylinder 327. The inner diameter of the protective cover 328 is larger than the outer diameter of the filter frame 303.

[0090] The second mounting bracket 326 has a second rack 329 installed on both sides for cooperating with the gear 308 to drive the filter frame 303 to rotate. The second rack 329 is arranged parallel to the second slide rail 301.

[0091] Below the filter frame cleaning station, there is a water vapor nozzle 330 for rinsing the filter frame 303 and a waste collection box 325 for collecting cleaning wastewater. The water vapor nozzle 330 is connected to the second water supply pipe 331 and the air supply pipe 332 respectively through a three-way connector. The second water supply pipe 331 and the air supply pipe 332 are each equipped with a solenoid valve for controlling opening and closing. The input ends of the second water supply pipe 331 and the air supply pipe 332 are connected to the external pure water supply module and the external air supply module respectively.

[0092] In this embodiment, after the filter frame mechanism discards the filter membrane 309, the second chain conveyor module 306 drives the filter frame mechanism to move towards the cleaning station. During the movement, the second rack 329 meshes with the gear 308, driving the filter frame 303 to rotate 180°. When the filter frame 303 is in place, the fifth cylinder 327 pushes out to put the protective cover 328 on the outside of the filter frame 303, the second water supply pipe 331 is started to supply water, and the water vapor nozzle 330 rinses the filter frame 303. After rinsing, the second water supply pipe 331 is closed, the air supply pipe 332 is started to supply air, and the water vapor nozzle 330 dries the filter frame 303.

[0093] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The front side wall of the installation box 1 is provided with a first switch door 101 to facilitate placing soil samples into beakers 203 and placing sample cups 408 into placement slots 403. The front side wall of the installation box 1 is also equipped with a touch computer 102.

[0094] The installation box 1 has a second door 103 on its left side wall for easy removal of the waste collection box 325 and the wastewater collection box 333; the installation box 1 has a third door 104 on its right side wall for easy replacement of the film roll 312.

[0095] In summary, the specific steps for preparing the soil sample testing solution in this invention are as follows:

[0096] S1: Open the first switch door 101, place a certain amount of soil sample (0.5g in this example) into beaker 203, add a certain amount of water (3ml in this example) to beaker 203 to moisten the soil, and then add a certain amount of hydrochloric acid and nitric acid in sequence (6ml of hydrochloric acid and 2ml of nitric acid in this example).

[0097] S2: Place the sample cup 408 into the placement slot 403 and close the first switch door 101;

[0098] S3: The first motor 206 rotates in both directions to drive the beaker 203 to shake the soil sample and acidic solution inside. The first chain conveyor module 207 drives the beaker mechanism to move to the sample heating station. The electric heating furnace 210 heats the beaker 203 (heating time is 20 minutes) to digest the mixture in the beaker 203. After digestion, the first chain conveyor module 207 drives the beaker mechanism to move to the sample solution dilution and pouring station.

[0099] S4: The filter membrane mounting module mounts a filter membrane 309 from the filter membrane roll 312 onto the filter frame 303, and the second chain conveyor module 306 drives the filter frame mechanism with the mounted filter membrane 309 to move to the filtration station.

[0100] S5: The second cylinder 406 drives the sample cup 408 to move below the filter station, and the first cylinder 405 pushes out to make the sample cup 408 fit onto the outside of the filter frame 303.

[0101] S6: Add a certain amount of water (25ml in this example) into beaker 203 through the pure water nozzle and the first water supply pipe. The first motor 206 rotates forward and backward to shake the solution in beaker 203 evenly. Then, drive beaker 203 to rotate a certain angle (95° in this example) through the first motor 206 to pour the mixture in beaker 203 into the filter frame 303 below for filtration.

[0102] S7: Repeat the steps in S6 four times;

[0103] S8: The first cylinder 405 retracts, causing the sample cup 408 to separate from the filter frame 303. The second cylinder 406 drives the sample cup 408 to move to the sample cup placement station. At the same time, the first chain conveyor module 207 drives the beaker mechanism to move to the soil sampling station.

[0104] S9: The second chain conveyor module 306 drives the filter frame mechanism to move to the filter membrane discarding station. The filter membrane ejection module ejects the used filter membrane 309 out of the filter frame 303 and drops it into the waste collection box 325.

[0105] S10: The second chain conveyor module 306 drives the filter frame mechanism to move to the filter frame cleaning station. The cleaning module cleans and dries the filter frame 303. After cleaning and drying, the second chain conveyor module 306 drives the filter frame mechanism to move to the filter membrane installation station.

[0106] S11: Open the first switch door 101, take out the sample cup 408 and obtain the sample test solution of the soil sample.

[0107] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A soil sample detection liquid preparation device for soil monitoring, characterized by, Including the mounting box, and: Sample preparation components, The sample preparation assembly includes a first slide rail arranged longitudinally along the mounting box, and a beaker mechanism slidably arranged on the first slide rail. The first slide rail is provided with a soil sampling station, a sample dilution and pouring station, and a sample heating station arranged sequentially from front to back along the mounting box. Sample fluid filtration assembly The sample solution filtration assembly is located below the sample solution preparation assembly. The sample solution filtration assembly includes a second slide rail arranged laterally along the mounting box and a filter frame mechanism slidably arranged on the second slide rail. The second slide rail is arranged sequentially from right to left along the mounting box as a filter membrane installation station, a filtration station, a filter membrane disposal station, and a filter frame cleaning station. Filtrate collection assembly The filtrate collection assembly is located below the sample filtrate filtration assembly. The filtrate collection assembly includes a first slide plate arranged longitudinally along the mounting box and a sample cup conveying mechanism slidably arranged on the first slide plate. The first slide plate is provided with a sample cup placement station and a sample filtrate collection station in sequence along the direction from front to back of the mounting box. Above the filter membrane installation station is a filter membrane fitting module for fitting the filter membrane onto the inner wall of the filter frame. The filter membrane fitting module includes a feeding roller, a receiving roller, a filter membrane roll, a third cylinder, a first mounting plate, a second guide rod, a spring, a push ring, a push column, and a connecting rod. Parallel feeding rollers and receiving rollers are installed inside the mounting box. The feeding rollers and receiving rollers are located on the outside of the two second slide rails. The filter membrane roll is installed on the feeding roller. The front end of the filter membrane roll is fixed on the receiving roller. Several filter membranes are evenly spaced on the filter membrane roll. The filter membranes and the filter membrane roll are connected by an easy-tear opening. A third cylinder that extends and retracts vertically is installed on the top wall of the mounting box. A first mounting plate is fixed to the extension end of the third cylinder. A spring is installed on the lower end face of the first mounting plate. A push column is installed on the lower end of the spring. A second guide rod is installed on the upper end of the push column. The second guide rod slides and guides the first mounting plate. The lower end face of the first mounting plate is also equipped with several connecting rods. The push ring is installed at the lower end of the several connecting rods. The outer diameter of the push column is smaller than the inner diameter of the filter frame. The inner diameter of the push ring is larger than the outer diameter of the filter frame. When the spring is in a free state, the lower end face of the push ring is higher than the lower end face of the push column.

2. The soil sample detection liquid preparation apparatus for soil monitoring according to claim 1, wherein The beaker mechanism includes a first slider, a beaker, a first clamp, a first rotating shaft, a first motor, and a first chain conveyor module; The beaker is snapped onto the first clamp, and a first rotating shaft is installed on both sides of the first clamp. The two first rotating shafts are rotatably mounted on two first sliders, and the two first sliders are slidably mounted on the first slide rails on both sides. One of the first sliders is also equipped with a first motor. The power output shaft of the first motor is fixedly connected to the first rotating shaft. A first chain conveying module for driving the first slider to move along the first slide rail is provided between the front and rear ends of the first slide rail. The side wall of the first slider is fixedly connected to the chain of the first chain conveying module.

3. The soil sample detection liquid preparation apparatus for soil monitoring according to claim 1, wherein The filter frame mechanism includes a second slider, a filter frame, a second clamp, a second rotating shaft, a second chain conveyor module, a limiting ring platform, and gears; The outer wall of the filter frame is provided with several water flow holes. A limiting ring platform is installed on the outer wall of the top of the filter frame. The filter frame is snapped onto the second clamp. A second rotating shaft is installed on both sides of the second clamp. The two second rotating shafts are rotatably installed on the two second sliders respectively. Gears are also fixedly installed on the second rotating shafts. The two second sliders are slidably arranged on the second slide rails on both sides respectively. A second chain conveying module for driving the second slider to move along the second slide rail is provided between the left and right ends of the second slide rail, and the side wall of the second slider is fixedly connected to the chain of the second chain conveying module.

4. The soil sample detection liquid preparation apparatus for soil monitoring according to claim 1, wherein The sample cup conveying mechanism includes a placement plate, a placement groove, a sliding plate, a first cylinder, a second cylinder, and a first guide column; The two sides of the sliding plate are respectively slidably disposed on two first sliding groove plates, and the telescopic end of the second cylinder is installed on the rear side wall of the sliding plate. The second cylinder is used to push and pull the sliding plate to slide along the first sliding groove plate. A first cylinder that extends and retracts vertically is mounted on the sliding plate. The placement plate is mounted on the extension end of the first cylinder. The placement plate has a placement groove for placing sample cups. Several first guide posts are also mounted on the placement plate. The first guide posts slide and guide the sliding plate. The sample liquid receiving station is located directly below the filtration station.

5. The soil sample detection solution preparation device for soil monitoring as described in claim 1, characterized in that, A pure water nozzle is installed above the sample solution dilution and pouring station. The inlet end of the pure water nozzle is connected to a first water supply pipe installed on the top wall of the installation box. The first water supply pipe is connected to an external pure water supply module. The sample solution dilution and pouring station is located above one side of the filtration station.

6. The soil sample detection solution preparation device for soil monitoring as described in claim 1, characterized in that, An electric heating furnace is installed on the inner wall of the mounting box directly below the sample heating station. An exhaust screen is installed on the top wall of the mounting box directly above the electric heating furnace. An exhaust fan for heat dissipation is installed on the side wall of the mounting box behind the electric heating furnace.

7. The soil sample detection solution preparation device for soil monitoring as described in claim 1, characterized in that, Above the filter membrane discarding station is a filter membrane pushing module for pushing the filter membrane out of the filter frame. The filter membrane pushing module includes a first mounting bracket, a fourth cylinder, a second mounting plate, a push rod, and a first rack. The first mounting bracket is horizontally arranged between two second slide rails. The fourth cylinder, which extends and retracts in the vertical direction, is mounted on the first mounting bracket. The second mounting plate is mounted on the bottom end of the fourth cylinder. Several push rods are mounted on the lower end face of the second mounting plate. Several through holes for the push rods to pass through are opened on the bottom end face of the filter frame. The first mounting frame has a first rack installed on both sides for cooperating with gears to drive the filter frame to flip. The first rack is arranged parallel to the second slide rail. A waste collection box for collecting filter membrane waste is provided below the filter membrane discarding station.

8. The soil sample detection solution preparation device for soil monitoring as described in claim 1, characterized in that, A cleaning module for cleaning and drying the filter frame is installed on the mounting box at the filter frame cleaning station. The cleaning module includes a second mounting bracket, a fifth cylinder, a protective cover, a second rack, a water vapor nozzle, a second water supply pipe, an air supply pipe, and a wastewater collection tank. The second mounting bracket is horizontally arranged between the two second slide rails. The fifth cylinder, which extends and retracts in the vertical direction, is mounted on the second mounting bracket. The extension end of the fifth cylinder is installed on the protective cover cylinder with an opening at the bottom. The inner diameter of the protective cover cylinder is larger than the outer diameter of the filter frame. The second mounting bracket has a second rack installed on both sides for cooperating with gears to drive the filter frame to flip. The second rack is arranged parallel to the second slide rail. Below the filter frame cleaning station, there are water vapor nozzles for rinsing the filter frame and a waste collection box for collecting cleaning wastewater. The water vapor nozzles are connected to the second water supply pipe and the air supply pipe respectively through a three-way connector. The second water supply pipe and the air supply pipe are each equipped with a solenoid valve for controlling opening and closing. The input ends of the second water supply pipe and the air supply pipe are connected to the external pure water supply module and the external air supply module respectively.

9. The soil sample detection solution preparation device for soil monitoring as described in claim 1, characterized in that, The front side wall of the installation box has a first switch door for placing soil samples into beakers and sample cups into placement slots. A touch screen computer is also installed on the front side wall of the installation box. The left side wall of the installation box has a second switch door for removing waste collection boxes and wastewater collection boxes. The right side wall of the installation box has a third switch door for replacing film rolls.

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