Soil water soluble fluoride determination device

Abstract

The present application relates to soil water-soluble fluoride determination device, wherein, including determination box, soil light grinding chamber structure, pressure grinding structure, stirring determination chamber structure, fluorine standard storage liquid and water supplement device, ion meter and control structure are arranged in determination box, wherein, soil light grinding chamber structure includes soil grinding chamber with open upper end, light lamp is arranged on the side wall of soil grinding chamber, the soil to be measured can be placed on the bottom plate of soil grinding chamber, the light lamp can irradiate the soil to be measured, and dehydration, the pressure grinding structure is used for pressure grinding the soil to be measured on the bottom plate of soil grinding chamber, so that it is crushed and laid on the bottom plate of soil grinding chamber, the stirring determination chamber structure includes determination chamber with open upper end and stirring device, the soil to be measured in soil light grinding chamber structure can be placed into determination chamber, the present application can improve the automation level, liberate manpower, and reduce the human error caused in detection, improve detection precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil detection, and particularly relates to a soil water-soluble fluoride determination device. BACKGROUND

[0002] Fluorine is an essential trace element for human and animals, and insufficient intake can easily cause dental caries and osteoporosis, but excessive intake can cause fluorosis symptoms such as dental fluorosis and skeletal fluorosis.

[0003] Fluorine not only causes fluorosis symptoms such as dental fluorosis and skeletal fluorosis, but also has adverse effects on the intelligence development of children and male reproduction. After plants are poisoned by fluorine, various symptoms such as leaf tip necrosis, leaf discoloration, and decline in yield and quality of plants occur.

[0004] Excessive fluorine in soil can have potential harmful effects on human health and the growth of plants and animals. Endemic fluorosis is caused by long-term intake of excessive fluorine in the environment through the food chain.

[0005] Poisoning is caused by long-term intake of excessive fluorine in the environment through the food chain. Excessive fluorine in soil can cause soil pore blockage, which is not conducive to soil aggregation, and water penetration, thereby causing deterioration of soil physical properties. At the same time, soil fluorine pollution from external sources can also cause the disintegration of iron, aluminum oxides or nitrogen oxides, and promote the solubilization of soil organic matter, thereby affecting the availability of potentially toxic elements. Therefore, soil fluorine content detection is a very meaningful thing.

[0006] Soil fluorine content mainly includes water-soluble fluoride and total fluoride. Water-soluble fluoride is measured by extracting fluorine from soil samples with water, while total fluoride is measured by extracting soil samples with alkali under high temperature.

[0007] In the existing water-soluble fluoride detection, the soil sample needs to be placed in a drying tray, spread into a thin layer of 2cm~3cm thick, crushed with a wooden stick, and turned over several times a day, and naturally dried. The mixed and dried sample is ground, sieved through a soil sieve, and then the sieved soil sample is added to a fluorine standard stock solution and deionized water, stirred uniformly, and then detected by an ion meter. The entire process is long in duration, complicated in operation, and labor-intensive. Therefore, it is urgent to design a device for water-soluble fluoride detection to improve the automation level, free up manpower, reduce human error in detection, and improve detection accuracy. SUMMARY

[0008] To solve the problems mentioned in the background art, the present application provides a soil water-soluble fluoride determination device, which can improve the automation level, free up manpower, reduce human error in detection, and improve detection accuracy.

[0009] To achieve the above technical purposes, the technical scheme adopted by the present application is:

[0010] The soil water-soluble fluoride determination device comprises a determination box, a soil light grinding chamber structure, a pressure grinding structure, a stirring determination chamber structure, a fluoride standard stock solution and water supplement device, an ion meter and a control structure are arranged in the determination box, the soil light grinding chamber structure comprises a soil grinding chamber with an open upper end, a light lamp is arranged on the side wall of the soil grinding chamber, the soil to be measured can be placed on the bottom plate of the soil grinding chamber, the light lamp can irradiate the soil to be measured and dehydrate, the pressure grinding structure is used for grinding the soil to be measured on the bottom plate of the soil grinding chamber, so that the soil to be measured is crushed and laid flat on the bottom plate of the soil grinding chamber, the stirring determination chamber structure comprises a determination chamber with an open upper end and a stirring device, the soil to be measured in the soil light grinding chamber structure can be placed into the determination chamber, the fluoride standard stock solution and water supplement device is used for adding a certain amount of fluoride standard stock solution and deionized water into the determination chamber, the stirring device can stir the soil to be measured, the fluoride standard stock solution and the deionized water in the determination chamber, the ion meter is used for detecting the potential response value of the mixed liquid in the determination chamber and converting the potential response value into the content of soil water-soluble fluoride, and the control structure is used for controlling the operation of the soil light grinding chamber structure, the pressure grinding structure, the stirring determination chamber structure and the fluoride standard stock solution and water supplement device.

[0011] In some embodiments, the side wall of the soil grinding chamber is fixed by the outer side wall and the inner side wall, a plurality of light lamp mounting grooves are arranged on the inner side surface of the outer side wall, the light lamp is mounted in the light lamp mounting groove, the inner side wall is made of transparent material, and the light lamp can irradiate the soil to be measured on the bottom plate of the soil grinding chamber through the inner side wall.

[0012] In some embodiments, the light lamp is an incandescent lamp.

[0013] In some embodiments, one end of the bottom plate of the soil grinding chamber is hinged to the side wall of the soil grinding chamber, the other end is a free end, the bottom plate of the soil grinding chamber can be opened and closed relative to the side wall of the soil grinding chamber, a bottom plate cylinder is mounted below the bottom plate of the soil grinding chamber in a matched mode, the cylinder body of the bottom plate cylinder is fixedly connected with the determination box, the telescopic rod of the bottom plate cylinder is hingedly connected with the bottom plate of the soil grinding chamber, when the telescopic rod of the bottom plate cylinder is retracted, the bottom plate of the soil grinding chamber can be pulled to rotate and open, and the soil to be measured on the bottom plate of the soil grinding chamber leaks out from the bottom of the soil grinding chamber.

[0014] In some embodiments, the pressure grinding structure includes a pressure cylinder, a rotary motor, a rotary motor base, a pressure cylinder base, and a rolling plate. The pressure cylinder base is fixed on the measuring box, the pressure cylinder base extends partially above the soil grinding chamber, the pressure cylinder body is fixed on the pressure cylinder base, the telescopic rod of the pressure cylinder is connected with the rotary motor base, the rotary motor is fixed on the rotary motor base, the rotary shaft of the rotary motor is fixedly connected with the rolling plate, the rolling plate is located directly above the soil grinding chamber, the pressure cylinder can press down the rotary motor base, thereby making the rolling plate move downward to press the soil to be measured on the bottom plate of the soil grinding chamber, and the rotary motor can drive the rolling plate to rotate, thereby crushing the soil to be measured on the bottom plate of the soil grinding chamber and laying it flat on the bottom plate of the soil grinding chamber.

[0015] In some embodiments, a transfer chute is arranged below the bottom plate of the soil grinding chamber, the transfer chute is arranged obliquely, the soil to be measured leaked from the soil grinding chamber can fall on the high end, the low end of the transfer chute is located above the measuring chamber, and the soil to be measured on the transfer chute can slide into the measuring chamber.

[0016] In some embodiments, the fluorine standard stock solution and water supplement device includes a fluorine standard stock solution tank, a deionized water connector, a control valve, a peristaltic pump, and a transfusion pipe. The fluorine standard stock solution tank stores standard fluorine standard stock solution. The deionized water connector is connected to a deionized water source. The fluorine standard stock solution tank and the deionized water connector are connected to the peristaltic pump through the control valve. The control valve can control the connection and disconnection of the fluorine standard stock solution tank, the deionized water connector, and the peristaltic pump. The peristaltic pump is connected to the upper part of the measuring chamber through the transfusion pipe, and the peristaltic pump can pump the fluorine standard stock solution or deionized water into the measuring chamber.

[0017] In some embodiments, the stirring device includes a stirring motor, a stirring rod, and stirring blades. The stirring motor is fixed on the measuring box, the stirring motor is in transmission connection with the stirring rod, the stirring blades are fixed on the lower end of the stirring rod, and the middle and lower parts of the stirring rod and the stirring blades are located in the measuring chamber.

[0018] In some embodiments, the ion meter is provided with an insertion electrode, the ion meter is fixed on the measuring box, the insertion electrode is connected with the ion meter, and the insertion electrode is inserted into the measuring chamber.

[0019] In some embodiments, the control structure is a PL, the control structure is in signal connection with the illumination lamp, the bottom plate cylinder, the pressure cylinder, the rotary motor, the control valve, the peristaltic pump, the stirring motor, and the ion meter. The control structure can receive and display the detection information of the ion meter on the display screen fixed on the outer surface of the measuring box. The control structure can control the operation of the illumination lamp, the bottom plate cylinder, the pressure cylinder, the rotary motor, the control valve, the peristaltic pump, and the stirring motor. The illumination lamp, the bottom plate cylinder, the pressure cylinder, the rotary motor, the control valve, the peristaltic pump, and the stirring motor are connected with the external power source through power lines.

[0020] Compared with the prior art, the present application has the advantages of:

[0021] 1、The present application can greatly reduce the labor cost, reduce the human error in detection, and improve the detection accuracy by using the control structure to control the soil illumination, pressure grinding, mixing, stirring, and detection steps automatically.

[0022] 2、The present application increases the illumination lamp in the soil grinding chamber, and protects it with the transparent inner side wall of the soil grinding chamber, so that the soil to be tested is dried and heated by the light heat generated by the illumination lamp, simulating the sun drying, and the speed is faster than natural drying, which can greatly improve the soil drying efficiency, and shorten the time used in the most time-consuming soil processing step in the entire detection process, effectively improving the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an external structure diagram of the soil water-soluble fluoride determination device of the present application.

[0024] Figure 2 It is an internal structure diagram of the soil water-soluble fluoride determination device of the present application.

[0025] Figure 3 It is a structure diagram of the soil to be tested being pressed and ground in the soil grinding chamber.

[0026] Figure 4 It is a structure diagram of the soil to be tested entering the determination chamber from the soil grinding chamber.

[0027] The reference signs in the drawings are as follows: determination box 1, soil illumination grinding chamber structure 2, soil grinding chamber 21, outer side wall 21a, inner side wall 21b, illumination lamp mounting groove 21c, illumination lamp 22, bottom plate air cylinder 23, pressure grinding structure 3, lower pressing air cylinder 31, rotary motor 32, rotary motor seat 33, lower pressing air cylinder seat 34, rolling plate 35, stirring determination chamber structure 4, determination chamber 41, transfer chute 42, fluoride standard stock solution and water supplement device 5, fluoride standard stock solution tank 51, deionized water connecting pipe 52, control valve 53, peristaltic pump 54, infusion tube 55, ion meter 6, electrode 61, control structure 7, stirring device 8, stirring motor 81, stirring rod 82, stirring fan blade 83. DETAILED DESCRIPTION

[0028] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0029] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back" and the like cited in the invention are only for the convenience of clear description, and are not intended to limit the scope of the invention, and the change or adjustment of the relative relationship is also considered as the implementable scope of the invention without substantial change of the technical content.

[0030] Referring to Figures 1-4 , the soil water-soluble fluoride determination device mainly includes a determination box 1, a soil light grinding chamber structure 2, a pressure grinding structure 3, a stirring determination chamber structure 4, a fluoride standard storage liquid and water supplement device 5, an ion meter 6, and a control structure 7, etc.

[0031] The determination box 1 is provided with a display screen and control buttons on the front face, the control buttons are used to input instructions to the control structure 7, and a plurality of supports are further provided in the determination box 1 to provide mounting positions for various devices in the determination box 1.

[0032] The soil light grinding chamber structure 2 includes a soil grinding chamber 21, a light lamp 22, and a bottom plate air cylinder 23, etc. The side wall of the soil grinding chamber 21 is fixed by the outer side wall 21a and the inner side wall 21b. A plurality of light lamp mounting grooves 21c are provided on the inner side of the outer side wall 21a, and the light lamp 22 is mounted in the light lamp mounting groove 21c. The inner side wall 21b is made of transparent material. The light lamp 22 can irradiate the soil to be measured on the bottom plate of the soil grinding chamber 21 through the inner side wall 21b.

[0033] The pressure grinding structure 3 includes a lower pressure air cylinder 31, a rotating motor 32, a rotating motor seat 33, a lower pressure air cylinder seat 34, and a rolling plate 35. The lower pressure air cylinder seat 34 is fixed on the determination box 1, and the lower pressure air cylinder seat 34 partially extends above the soil grinding chamber 21. The cylinder body of the lower pressure air cylinder 31 is fixed on the lower pressure air cylinder seat 34. The telescopic rod of the lower pressure air cylinder 31 is connected with the rotating motor seat 33. The rotating motor 32 is fixed on the rotating motor seat 33. The rotating shaft of the rotating motor 32 is fixedly connected with the rolling plate 35. The rolling plate 35 is located directly above the soil grinding chamber 21.

[0034] The stirring determination chamber structure 4 includes a determination chamber 41, a transfer chute 42, and a stirring device 8. The transfer chute 42 is inclinedly arranged. The soil to be measured leaked from the soil grinding chamber 21 can fall on the high end. The low end of the transfer chute 42 is located above the determination chamber 41. The soil to be measured on the transfer chute 42 can slide into the determination chamber 41. The stirring device 8 includes a stirring motor 81, a stirring rod 82, and stirring blades 83. The stirring motor 81 is fixed on the determination box 1. The stirring motor 81 is in transmission connection with the stirring rod 82. The stirring blades 83 are fixed on the lower end of the stirring rod 82. The middle and lower parts of the stirring rod 82 and the stirring blades 83 are all located in the determination chamber 41.

[0035] The fluorine standard stock solution and water supplement device 5 comprises a fluorine standard stock solution tank 51, a deionized water connecting pipe 52, a control valve 53, a peristaltic pump 54, a transfusion pipe 55 and the like structure, the fluorine standard stock solution tank 51 stores the standard proportion fluorine standard stock solution, according to the actual detection requirement, the fluorine standard stock solution can be mixed with the standard proportion total ionic strength adjusting buffer solution, so as to reduce the negative interference of Al 3+ , Fe 3+ , Ca 2+ , Mg 2+ and the like metal ions on the result, the deionized water connecting pipe 52 is connected with the deionized water source, the fluorine standard stock solution tank 51 and the deionized water connecting pipe 52 are connected with the peristaltic pump 54 through the control valve 53, the control valve 53 can control the on-off of the fluorine standard stock solution tank 51, the deionized water connecting pipe 52 and the peristaltic pump 54, the peristaltic pump 54 is communicated with the upper part of the determination chamber 41 through the transfusion pipe 55, and the peristaltic pump 54 can pump the fluorine standard stock solution or the deionized water into the determination chamber 41.

[0036] The ion meter 6 is provided with an insertion electrode 61, the ion meter 6 is fixed on the determination box 1, the insertion electrode 61 is connected with the ion meter 6, and the insertion electrode 61 is inserted into the determination chamber 41.

[0037] The control structure 7 is a PLC, the control structure 7 is connected with the illumination lamp 22, the bottom plate air cylinder 23, the pressing air cylinder 31, the rotating motor 32, the control valve 53, the peristaltic pump 54, the stirring motor 81 and the ion meter 6 in signal connection, and the control structure 7 can receive and display the detection information of the ion meter 6 on the display screen fixed on the outer surface of the determination box 1.

[0038] The soil water-soluble fluoride determination device provided by the application determines the soil water-soluble fluoride in the following steps:

[0039] Step one, collect and preserve the soil sample according to the relevant requirements of HJ / T166, remove stones, plants, insect residues and the like in the soil sample, and make the soil sample into a to-be-tested soil sample;

[0040] Step two, pour the to-be-tested soil sample into the soil grinding chamber 21, and then start the control structure 7 and input the start determination instruction;

[0041] Step three, the control structure 7 controls the illumination lamp 22 to be turned on, the illumination lamp 22 performs light irradiation and heating on the to-be-tested soil sample, in this process, the pressing grinding structure 3 lowers the pressing plate 35 through the pressing air cylinder 31 and the rotating motor 32 at regular time intervals, and the to-be-tested soil sample is pressed and ground, so that the soil sample becomes fine particles;

[0042] Step four, start the bottom plate air cylinder 23, open the bottom plate of the soil grinding chamber 21, and the granular soil sample enters the determination chamber 41 through the transfer chute 42;

[0043] Step five, the control valve 53 opens the fluorine standard storage tank 51, the deionized water pipe 52 and the peristaltic pump 54 in turn, and the peristaltic pump 54 quantitatively adds the fluorine standard storage liquid and the deionized water to the measuring chamber 41;

[0044] Step six, the stirring device 8 is started, so that the granular soil sample is fully contacted with the fluorine standard storage liquid and the deionized water, and then is placed for a period of time;

[0045] Step seven, the ion meter 6 detects the water potential response value of the measuring chamber 41 through the electrode 61, and converts the fluorine content in the water through the potential response value.

[0046] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiment, any technical scheme belonging to the idea of the present application is within the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application should be considered as the protection scope of the present application.

Claims

1. A device for determining water-soluble fluoride in soil, characterized in that, The test chamber includes a testing chamber (1), which is equipped with a soil light grinding chamber structure (2), a grinding structure (3), a stirring testing chamber structure (4), a fluoride standard storage solution and water replenishment device (5), an ion meter (6), and a control structure (7). The soil light grinding chamber structure (2) includes a soil grinding chamber (21) with an opening at the top. A light lamp (22) is installed on the side wall of the soil grinding chamber (21). The soil to be tested can be placed on the bottom plate of the soil grinding chamber (21). The light lamp (22) can irradiate the soil to be tested and dehydrate it. The grinding structure (3) is used to grind the soil to be tested on the bottom plate of the soil grinding chamber (21), so that it is crushed and spread evenly on the bottom plate of the soil grinding chamber (21). The stirring structure (4) is used to grind the soil to be tested on the bottom plate of the soil grinding chamber (21), so that it is crushed and spread evenly on the bottom plate of the soil grinding chamber (21). The testing chamber structure (4) includes a testing chamber (41) with an opening at the top and a stirring device (8). The soil to be tested in the soil light grinding chamber structure (2) can be placed into the testing chamber (41). The fluoride standard stock solution and water replenishment device (5) is used to add a certain amount of fluoride standard stock solution and deionized water to the testing chamber (41). The stirring device (8) can stir the soil to be tested, fluoride standard stock solution and deionized water in the testing chamber (41). The ion meter (6) is used to detect the potential response value of the mixed liquid in the testing chamber (41) and convert the potential response value into the water-soluble fluoride content of the soil. The control structure (7) is used to control the soil light grinding chamber structure (2), the grinding structure (3) and the stirring testing chamber. The operation of the structure (4) and the fluoride standard stock solution and water replenishment device (5) is as follows: the side wall of the soil grinding chamber (21) is formed by the outer side wall (21a) and the inner side wall (21b) being attached and fixed together. The inner side of the outer side wall (21a) is provided with several light lamp mounting slots (21c). The light lamps (22) are installed in the light lamp mounting slots (21c). The inner side wall (21b) is made of transparent material. The light lamps (22) can irradiate the soil to be tested on the bottom plate of the soil grinding chamber (21) through the inner side wall (21b). One end of the bottom plate of the soil grinding chamber (21) is hinged to the side wall of the soil grinding chamber (21), and the other end is a free end. The bottom plate of the soil grinding chamber (21) can be relative to the soil grinding chamber. (21) The side wall opens and closes. A bottom plate cylinder (23) is installed under the bottom plate of the soil grinding chamber (21). The cylinder body of the bottom plate cylinder (23) is fixedly connected to the measuring box (1). The telescopic rod of the bottom plate cylinder (23) is hinged to the bottom plate of the soil grinding chamber (21). When the telescopic rod of the bottom plate cylinder (23) retracts, it can pull the bottom plate of the soil grinding chamber (21) to rotate and open. The soil to be tested on the bottom plate of the soil grinding chamber (21) leaks out from the bottom of the soil grinding chamber (21). The pressing structure (3) includes a pressing cylinder (31), a rotary motor (32), a rotary motor seat (33), a pressing cylinder seat (34), and a rolling plate (35). The pressing cylinder seat (34) is fixed on the measuring box (1).The lower cylinder seat (34) extends above the soil grinding chamber (21). The cylinder body of the lower cylinder (31) is fixed on the lower cylinder seat (34). The telescopic rod of the lower cylinder (31) is connected to the rotary motor seat (33). The rotary motor (32) is fixed on the rotary motor seat (33). The rotating shaft of the rotary motor (32) is fixedly connected to the rolling plate (35). The rolling plate (35) is located directly above the soil grinding chamber (21). The lower cylinder (31) can rotate the rotary motor. The rotating motor base (33) presses down, causing the compaction plate (35) to move down and press down on the soil to be tested on the bottom plate of the soil grinding chamber (21). The rotating motor (32) can drive the compaction plate (35) to rotate, thereby crushing the soil to be tested on the bottom plate of the soil grinding chamber (21) and spreading it evenly on the bottom plate of the soil grinding chamber (21). A transfer chute (42) is provided below the bottom plate of the soil grinding chamber (21). The transfer chute (42) is inclined. The soil to be tested leaks out of the soil grinding chamber (21). It lands precisely at the high end, with the lower end of the transfer chute (42) located above the testing chamber (41). The soil to be tested on the transfer chute (42) can slide into the testing chamber (41). The fluoride standard stock solution and water replenishment device (5) includes a fluoride standard stock solution tank (51), a deionized water inlet (52), a control valve (53), a peristaltic pump (54), and a delivery pipe (55). The fluoride standard stock solution tank (51) contains a standard-ratio fluoride standard stock solution. The deionized water inlet (52)... 52) Connecting to a deionized water source, the fluoride standard storage tank (51) and the deionized water inlet (52) are both connected to a peristaltic pump (54) via a control valve (53). The control valve (53) controls the on / off connection of the fluoride standard storage tank (51), the deionized water inlet (52), and the peristaltic pump (54). The peristaltic pump (54) is connected to the upper part of the testing chamber (41) via a delivery pipe (55), and the peristaltic pump (54) pumps the fluoride standard storage solution or deionized water into the testing chamber (41).

2. The soil water-soluble fluoride measuring device according to claim 1, characterized in that, The light source (22) is an incandescent lamp.

3. The soil water-soluble fluoride measuring device according to claim 2, characterized in that, The stirring device (8) includes a stirring motor (81), a stirring rod (82), and a stirring blade (83). The stirring motor (81) is fixed on the measuring chamber (1). The stirring motor (81) is connected to the stirring rod (82) in a transmission connection. The stirring blade (83) is fixed at the lower end of the stirring rod (82). The middle and lower parts of the stirring rod (82) and the stirring blade (83) are all located in the measuring chamber (41).

4. The soil water-soluble fluoride measuring device according to claim 3, characterized in that, The ion meter (6) is equipped with an insertion electrode (61). The ion meter (6) is fixed on the measuring chamber (1). The insertion electrode (61) is connected to the ion meter (6) and inserted into the measuring chamber (41).

5. The soil water-soluble fluoride measuring device according to claim 4, characterized in that, The control structure (7) is a PLC. The control structure (7) is connected to the light lamp (22), the base plate cylinder (23), the pressing cylinder (31), the rotary motor (32), the control valve (53), the peristaltic pump (54), the stirring motor (81), and the ion meter (6). The control structure (7) can receive and display the detection information of the ion meter (6) on the display screen fixed on the outer surface of the measuring box (1). The control structure (7) can control the operation of the light lamp (22), the base plate cylinder (23), the pressing cylinder (31), the rotary motor (32), the control valve (53), the peristaltic pump (54), and the stirring motor (81). The light lamp (22), the base plate cylinder (23), the pressing cylinder (31), the rotary motor (32), the control valve (53), the peristaltic pump (54), and the stirring motor (81) are all connected to an external power source through power lines.

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