Full-automatic detection equipment for content of ammonium dihydrogen phosphate

Abstract

The utility model belongs to the technical field of detection equipment, and provides full-automatic ammonium dihydrogen phosphate content detection equipment which comprises a detection box body, a grinding box arranged in the detection box body, a pure water storage tank, an acetone storage tank, a filter tank, a reaction developing pool, an ascorbic acid storage tank, an ammonium molybdate storage tank, a colorimetric box and a control mechanism, a feeding opening which penetrates through the detection box body and extends outwards is formed in the top of the grinding box, and a rotatable grinding roller is arranged in the grinding box. The full-automatic ammonium dihydrogen phosphate content detection equipment provided by the utility model is simple and convenient to use, improves the detection efficiency, does not need to manually dropwise add reaction liquid, ensures the safety of a detection process, eliminates errors generated by manual operation, and effectively improves the accuracy of a detection result.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment, and particularly relates to a fully automatic detection device for the content of diammonium dihydrogen phosphate. Background Art

[0002] At present, some of the methods on the market use spectrophotometry to quickly determine the content of diammonium phosphate in dry powder fire extinguishing agents, which has a higher accuracy than the detection results of quinoline phosphomolybdic acid precipitation method. However, there is no corresponding automated detection equipment at present, so the existing detection process generally requires the detection personnel to manually weigh the fire extinguishing agent sample, grind and mix it, and drip a quantitative acetone solution, ascorbic acid solution, and ammonium molybdate solution for color reaction. On the one hand, the existing detection method is greatly restricted by the environment and can only be carried out in the laboratory. The rapid detection of diammonium phosphate content in the fire extinguishing agent cannot be completed on site, and it takes a long time, which seriously affects the efficiency of the detection; on the other hand, the detection process requires professional detection personnel to operate, and there are human operation errors, which affect the accuracy of the test results, and the repeatability is poor. And because the reaction solution is mostly a toxic solution, it is difficult to ensure the safety of the detection process.

[0003] Therefore, it is necessary to design a fully automatic detection equipment that is simple and convenient to operate and can efficiently and quickly complete the detection of diammonium phosphate content. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes a fully automatic detection device for ammonium dihydrogen phosphate content, which is simple and convenient to use, improves the detection efficiency, and does not require manual operation to drop the reaction liquid, thereby ensuring the safety of the detection process and eliminating the errors caused by manual operation, effectively improving the accuracy of the detection results.

[0005] The technical solution of the utility model is:

[0006] The utility model provides a fully automatic detection device for the content of ammonium dihydrogen phosphate, comprising a detection box, a grinding box, a pure water storage tank, an acetone storage tank, a filter tank, a reaction color development pool, an ascorbic acid storage tank, an ammonium molybdate storage tank, a colorimetric box, and a control mechanism arranged inside the detection box;

[0007] The top of the grinding box is provided with a feeding port which penetrates the detection box body and extends outward, and a rotatable grinding roller is provided inside the grinding box;

[0008] The pure water storage tank is provided with a heating mechanism connected to the control mechanism, and is also provided with a pure water injection pipeline connected to the grinding box, and the acetone storage tank is provided with an acetone injection pipeline connected to the grinding box;

[0009] The filter tank is arranged below the grinding box and is provided with a sample solution pipeline connected to the grinding box;

[0010] The reaction color development pool is arranged below the filter tank, and is provided with a filtered sample liquid pipeline connected to the filter tank;

[0011] The ascorbic acid storage tank is provided with an ascorbic acid injection pipeline connected to the reaction color development tank, and the ammonium molybdate storage tank is provided with an ammonium molybdate injection pipeline connected to the reaction color development tank;

[0012] The colorimetric box is a closed box body, which is provided with a color development sample liquid pipeline connected with the reaction color development pool.

[0013] Preferably, the pure water injection pipeline, the acetone injection pipeline, the ascorbic acid injection pipeline, the ammonium molybdate injection pipeline, and the color development sample liquid pipeline are all provided with electromagnetic control valves and injection pump bodies, and the dissolved sample liquid pipeline and the filtered sample liquid pipeline are all provided with electromagnetic control valves.

[0014] The electromagnetic control valve and the injection pump body are both connected to the control mechanism.

[0015] Preferably, the ends of the pure water injection pipe and the acetone injection pipe extending into the grinding box are provided with injection nozzles;

[0016] The ends of the ascorbic acid injection pipeline and the ammonium molybdate injection pipeline extending into the reaction color development pool are provided with injection nozzles.

[0017] Preferably, the detection box is provided with a pure water filling port, an acetone filling port, an ascorbic acid filling port, and an ammonium molybdate filling port;

[0018] The pure water storage tank is provided with a pure water adding pipe connected to the pure water adding port, the acetone storage tank is provided with an acetone adding pipe connected to the acetone adding port, the ascorbic acid storage tank is provided with an ascorbic acid adding pipe connected to the ascorbic acid adding port, and the ammonium molybdate storage tank is provided with an ammonium molybdate adding pipe connected to the ammonium molybdate adding port.

[0019] Preferably, a hydrophilic membrane is provided in the filter tank to filter out organic matter and insoluble matter in the solution sample;

[0020] A stirring mechanism connected to the control mechanism is arranged in the reaction color development pool, and the stirring mechanism is a magnetic stirrer.

[0021] Preferably, the detection box is provided with a filter canister replacement port adapted to the filter canister, so that the filter canister can be removed and replaced through the filter canister replacement port.

[0022] Preferably, a waste liquid storage tank is further provided in the detection box, and the waste liquid storage tank is provided with waste liquid collection pipes respectively connected with the grinding box, the reaction color development pool, and the colorimetric box;

[0023] The waste liquid collecting pipeline is provided with an electromagnetic control valve and a liquid injection pump body connected with the control mechanism.

[0024] Preferably, the detection box is provided with a waste liquid storage tank replacement port adapted to the waste liquid storage tank, so that the waste liquid storage tank can be disassembled and replaced through the waste liquid storage tank replacement port.

[0025] Preferably, the grinding box is provided with an arc-shaped grinding portion adapted to the grinding roller;

[0026] The grinding box is provided with a grinding motor connected to the grinding roller, and the grinding motor is connected to the control mechanism.

[0027] Preferably, a sealed cuvette and a spectrophotometer connected to the control mechanism are provided in the colorimetric box.

[0028] Preferably, the feed port is in the shape of an inverted frustum, and the surface of the grinding roller is provided with grinding protrusions or a frosted surface.

[0029] Compared with the prior art, the utility model has the following advantages and effects:

[0030] (1) A grinding box equipped with grinding rollers is used to grind the dry powder fire extinguishing agent sample to be tested so that the diammonium phosphate is completely dissolved in the sample liquid, thereby avoiding the incomplete dissolution of the diammonium phosphate into the sample liquid affecting the accuracy of the test results, improving the accuracy of the test results, and at the same time, shortening the test time and improving the test efficiency;

[0031] (2) A pure water storage tank equipped with a heating mechanism is used to heat and insulate the tertiary water in the pure water storage tank, thereby improving the dissolution and reaction of diammonium phosphate, ensuring its complete dissolution while shortening the detection time;

[0032] (3) The grinding box, pure water storage tank, acetone storage tank, filter tank, reaction colorimetric cell, ascorbic acid storage tank, ammonium molybdate storage tank, colorimetric box, and control mechanism connected by injection pipes can automatically complete the constant speed and quantitative addition of the reaction solution, eliminate the errors caused by manual operation, ensure the accuracy of the test results, reduce the labor intensity of the test, and ensure the safety of the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the fully automatic detection device for the content of diammonium phosphate in Example 1 of the utility model;

[0034] Figure 2 This is another structural schematic diagram of the fully automatic detection device for the content of diammonium phosphate in Example 1 of the utility model;

[0035] Figure 3 This is a schematic diagram of the internal structure of the fully automatic detection device for the content of diammonium phosphate in Example 1 of the utility model;

[0036] Figure 4 This is a schematic diagram of the structure of the internal components of the fully automatic detection device for the content of ammonium dihydrogen phosphate in Example 1 of the utility model;

[0037] Figure 5 This is another structural schematic diagram of the internal components of the fully automatic detection device for the content of diammonium phosphate in Example 1 of the utility model;

[0038] Figure 6 This is another structural schematic diagram of the internal components in the fully automatic detection equipment for diammonium phosphate content in Example 1 of the utility model.

[0039] Figure numerals: 1. Detection box; 11. Control panel; 12. Solenoid control valve; 13. Liquid injection pump body; 14. Pure water filling port; 15. Acetone filling port; 16. Ascorbic acid filling port; 17. Ammonium molybdate filling port; 18. Filter tank replacement port; 19. Waste liquid storage tank; 191. Waste liquid collection pipeline; 192. Waste liquid storage tank replacement port; 2. Grinding box; 21. Feeding port; 22. Grinding roller; 23. Grinding part; 24. Grinding motor; 3. Pure water storage tank; 31. Add Thermal mechanism; 32. Pure water injection pipeline; 33. Pure water adding pipeline; 4. Acetone storage tank; 41. Acetone injection pipeline; 42. Acetone adding pipeline; 5. Filter tank; 51. Dissolved sample liquid pipeline; 6. Reaction color development pool; 61. Filtered sample liquid pipeline; 7. Ascorbic acid storage tank; 71. Ascorbic acid injection pipeline; 72. Ascorbic acid adding pipeline; 8. Ammonium molybdate storage tank; 81. Ammonium molybdate injection pipeline; 82. Ammonium molybdate adding pipeline; 9. Colorimetric box; 91. Color development sample liquid pipeline. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0041] Embodiment 1:

[0042] like Figure 1 to Figure 6 As shown, the utility model provides a fully automatic detection device for the content of ammonium dihydrogen phosphate, including a detection box 1, a grinding box 2, a pure water storage tank 3, an acetone storage tank 4, a filter tank 5, a reaction color development pool 6, an ascorbic acid storage tank 7, an ammonium molybdate storage tank 8, a colorimetric box 9, and a control mechanism.

[0043] like Figure 1 , Figure 2As shown, the top of the detection box 1 is provided with a pure water filling port 14, an acetone filling port 15, an ascorbic acid filling port 16, and an ammonium molybdate filling port 17. The detection box 1 is also provided with a filter tank replacement port 18 and a waste liquid storage tank replacement port 192 located on the side wall.

[0044] Combination Figure 3 , Figure 5 , Figure 6 As shown, the grinding box 2 is arranged in the detection box body 1, and a feeding port 21 is arranged on the top of the grinding box 2, which penetrates the top wall of the detection box body 1 and extends outward. The feeding port 21 is in the shape of an inverted cone and is connected with the inside of the grinding box 2. A rotatable grinding roller 22 is arranged inside the grinding box 2, and the surface of the grinding roller 22 is provided with grinding protrusions or frosted surfaces. A grinding motor 24 connected to the grinding roller 22 is arranged outside the grinding box 2, and the grinding motor 24 is connected to the control mechanism. The grinding box 2 is provided with an arc-shaped grinding portion 23 adapted to the grinding roller 22, so that the dry powder fire extinguishing agent sample can be fully ground, thereby promoting its dissolution in the sample liquid.

[0045] The pure water storage tank 3 is provided with a cavity for storing laboratory grade tertiary water, such as Figure 3 , Figure 4 As shown, a heating mechanism 31 is provided at the bottom of the pure water storage tank 3 for heating and keeping the pure water in the pure water storage tank 3 warm. The pure water storage tank 3 is also provided with a pure water injection pipe 32 connected to the grinding box 2, and a pure water filling pipe 33 connected to the pure water filling port 14. The pure water injection pipe 32 is provided with an electromagnetic control valve 12 and a filling pump body 13 connected to the control mechanism, and the laboratory grade tertiary water is injected into the grinding box 2 at a constant speed and quantity, as shown in FIG. Figure 5 As shown, the end of the pure water injection pipe 32 extending into the grinding box 2 is provided with an injection nozzle.

[0046] Optionally, in some embodiments, the pure water filling pipeline 33 is also provided with an electromagnetic control valve 12 and a liquid injection pump body 13 to realize active water addition through an external pipeline.

[0047] The acetone storage tank 4 is arranged in a cavity for storing acetone solution, such as Figure 3 , Figure 4 As shown, the acetone storage tank 4 is provided with an acetone injection pipe 41 connected to the grinding box 2, and an acetone filling pipe 42 connected to the acetone filling port 15. The acetone injection pipe 41 is provided with an electromagnetic control valve 12 and an injection pump body 13 connected to the control mechanism, and the acetone solution is injected into the grinding box 2 at a constant speed and quantity. The end of the acetone injection pipe 41 extending into the grinding box 2 is provided with an injection nozzle.

[0048] Optionally, in some embodiments, the acetone liquid adding pipeline 42 is also provided with an electromagnetic control valve 12 and a liquid injection pump body 13 to realize active replenishment of acetone solution through an external pipeline.

[0049] like Figure 4 , Figure 5 As shown, the filter tank 5 is arranged below the grinding box 2 and is connected to the inside of the grinding box 2 through a dissolved sample liquid pipeline 51, so that the sample liquid that has been ground and dissolved inside the grinding box 2 can be injected into the filter tank 5. The dissolved sample liquid pipeline 51 is provided with an electromagnetic control valve 12 connected to a control mechanism, and a hydrophilic membrane is provided in the filter tank 5 to filter out organic matter and insoluble matter in the dissolved sample liquid.

[0050] The filter canister 5 can be disassembled and replaced through the filter canister replacement port 18 of the detection box 1, so as to replace the hydrophilic membrane in the filter canister 5 by replacing the filter canister 5, or replace the hydrophilic membrane in the filter canister 5 alone, usually after 20 batches of sample detection processing.

[0051] Optionally, in some embodiments, the dissolved sample liquid pipeline 51 is further provided with a liquid injection pump body 13 connected to the control mechanism.

[0052] like Figure 4 , Figure 6 As shown, the reaction color development pool 6 is arranged below the filter tank 5 and is connected to the inside of the filter tank 5 through a filtered sample liquid pipeline 61, so that the filtered sample liquid is injected into the reaction color development pool 6. The filtered sample liquid pipeline 61 is provided with an electromagnetic control valve 12. The reaction color development pool 6 is provided with a stirring mechanism connected to the control mechanism to fully stir the filtered sample liquid with the ascorbic acid solution and the ammonium molybdate solution for reaction and color development. Specifically, the stirring mechanism is a magnetic stirrer (not shown in the figure).

[0053] Optionally, in some embodiments, the filtered sample liquid pipeline 61 is further provided with a liquid injection pump body 13 connected to the control mechanism.

[0054] The ascorbic acid storage tank 7 is provided with a cavity for storing ascorbic acid solution, such as Figure 4 , Figure 6 As shown, the ascorbic acid storage tank 7 is provided with an ascorbic acid injection pipe 71 connected to the reaction color development pool 6, and an ascorbic acid adding pipe 72 connected to the ascorbic acid adding port 16. The ascorbic acid injection pipe 71 is provided with a solenoid valve connected to a control mechanism and an injection pump body 13, so as to inject the ascorbic acid solution into the reaction color development pool 6 at a constant speed and in a fixed quantity. The end of the ascorbic acid injection pipe 71 extending into the reaction color development pool 6 is provided with an injection nozzle (not shown in the figure).

[0055] Optionally, in some embodiments, the ascorbic acid filling pipeline 72 is also provided with an electromagnetic control valve 12 and a liquid injection pump body 13 to realize active replenishment of the ascorbic acid solution through an external pipeline.

[0056] The ammonium molybdate storage tank 8 is provided with a cavity for storing the ammonium molybdate solution, such as Figure 4 , Figure 6 As shown, the ammonium molybdate storage tank 8 is provided with an ammonium molybdate injection pipe 81 connected to the reaction color development pool 6, and an ammonium molybdate adding pipe 82 connected to the ammonium molybdate adding port 17, the ammonium molybdate injection pipe 81 is provided with an electromagnetic control valve 12 and an injection pump body 13, and the ammonium molybdate solution is injected into the reaction color development pool 6 at a constant speed and quantity, and the end of the ammonium molybdate injection pipe 81 extending into the reaction color development pool 6 is provided with an injection nozzle.

[0057] Optionally, in some embodiments, the ammonium molybdate heating pipeline is also provided with an electromagnetic control valve 12 and a liquid injection pump body 13 to actively replenish the ammonium molybdate solution through an external pipeline.

[0058] like Figure 4 , Figure 6 As shown, the colorimetric box 9 is provided with a colorimetric sample liquid pipeline 91 connected to the reaction colorimetric pool 6. The colorimetric sample liquid pipeline 91 is provided with an electromagnetic valve and a liquid injection pump body 13 connected to the control mechanism. The colorimetric sample liquid in the reaction colorimetric pool 6 is injected into the colorimetric box 9 at a constant speed and quantity for scanning. The colorimetric box 9 is a closed box, and a sealed colorimetric cell and a spectrophotometer are arranged inside. In view of the fact that the colorimetric cell and the spectrophotometer are mature existing technologies, their specific structures are not repeated here.

[0059] In this embodiment, a waste liquid storage tank 19 is further provided inside the detection box 1, which is provided with a waste liquid collection pipe 191 respectively connected to the grinding box 2, the reaction color development pool 6, and the colorimetric box 9. Figure 4 The waste liquid collection pipeline 191 is provided with an electromagnetic control valve 12 and a liquid injection pump body 13 (not shown in the figure) connected to the control mechanism, so as to collect the residual liquid in the grinding box 2, the reaction color development pool 6, and the colorimetric box 9 into the waste liquid storage tank 19 for centralized treatment. The waste liquid storage tank 19 can be disassembled and replaced through the waste liquid storage tank replacement port 192 of the detection box 1.

[0060] Optionally, in some embodiments, the control mechanism includes a controller disposed inside the detection box 1 , and a control panel 11 connected thereto, and the control panel is fixedly disposed on an outer wall of the detection box 1 .

[0061] The method for detecting the content of diammonium phosphate in a dry powder fire extinguishing agent using the fully automatic detection equipment for diammonium phosphate content provided in the present embodiment is as follows:

[0062] S1. Turn on the machine through the control panel, the spectrophotometer lamp in the colorimetric box 9 is automatically preheated, and the heating mechanism 31 starts heating and keeping warm. Preheat for 30 minutes to keep the tertiary water in the pure water storage tank 3 at 60°C.

[0063] S2. Weigh 0.1 g of the fire extinguishing agent sample taken out from the fire extinguisher and mixed, put it into the grinding box 2 through the feeding port 21, cover the feeding port 21, click the start button in the control panel, and the control mechanism automatically completes the sample processing and detection process according to the built-in program.

[0064] a. The control mechanism opens the electromagnetic control valve 12 of the acetone injection pipe 41 and the injection pump body 13, and sprays the acetone solution in the acetone storage tank 4 into the grinding box 2 through the injection nozzle at a speed of 10 ml / min, spraying for 20 seconds for a total of 2 ml; at the same time, the grinding motor 24 drives the grinding roller 22 to start rotating and grinding, and rotates and grinds for 120 seconds.

[0065] b. After grinding stops, the control mechanism opens the electromagnetic control valve 12 of the pure water injection pipe 32 and the injection pump body 13, and sprays the tertiary water in the pure water storage tank 3 into the grinding box 2 through the injection nozzle at a speed of 20ml / min for 150s, a total of 50ml; after the water injection is completed, the grinding roller 22 starts to rotate for 30s to dissolve the sample.

[0066] c. The control mechanism opens the electromagnetic control valve 12 of the dissolved sample liquid pipeline 51, and sends the dissolved sample liquid into the filter tank 5 below. The filter tank 5 is provided with a hydrophilic membrane, which can filter water-soluble substances, but cannot filter organic and insoluble substances.

[0067] d. The control mechanism opens the electromagnetic control valve 12 of the filtered sample liquid pipeline 61, and sends the filtered sample to the reaction color development pool 6 below. The control mechanism opens the electromagnetic control valve 12 of the waste liquid collection pipeline 191 and the injection pump body 13, and discharges the sample liquid at a speed of 60ml / min for 49.9s; after the discharge is completed, the electromagnetic valves of the pure water injection pipeline 32, the dissolved sample liquid pipeline 51, and the filtered sample liquid pipeline 61 are opened at the same time to allow the tertiary water in the pure water storage tank 3 to enter the reaction color development pool 6, a total of 100ml, at a speed of 50ml / min.

[0068] e. The control mechanism opens the electromagnetic control valve 12 of the ascorbic acid injection pipeline 71, the ammonium molybdate injection pipeline 81 and the injection pump body 13, first adds the ascorbic acid solution through the injection nozzle, and then adds the ammonium molybdate solution through the injection nozzle; the control mechanism controls the magnetic stirrer in the reaction color development pool 6 to rotate for 30 seconds to accelerate uniform color development.

[0069] f. After 10 minutes of color development, the control mechanism opens the electromagnetic control valve 12 of the color sample liquid pipeline 91 and the liquid injection pump body 13, and injects the color sample liquid into the sealed colorimetric cell in the colorimetric box 9 to fill it up. The light path of the colorimetric cell is 3 cm. After the first filling, the colorimetric liquid is discarded. After the second filling, the spectrophotometer in the colorimetric box 9 scans at a wavelength of 720 nm and records the absorbance value. The measurement is performed twice and the average value is calculated. The controller automatically calculates the content of diammonium dihydrogen phosphate using built-in software and programs.

[0070] S3. After the experiment is over, the control mechanism opens the electromagnetic control valve 12 and the injection pump body 13 of the waste liquid collecting pipe 191, and discharges the remaining color developing sample liquid in the reaction color developing pool 6 and the dissolved sample liquid in the grinding box 2 into the waste liquid storage tank 19 through the waste liquid collecting pipe 191; opens the electromagnetic control valves 12 of all pipes, cleans all pipes with water in the pure water storage tank 3 and drains all liquids.

[0071] It should be noted that during use, such as when conducting on-site testing at a spot check site, it is necessary to ensure that the fully automatic detection device for the content of ammonium dihydrogen phosphate provided in this embodiment is placed in a horizontal position as much as possible.

[0072] In summary, the fully automatic detection equipment for ammonium dihydrogen phosphate content provided by the utility model is simple and convenient to use, improves the detection efficiency, and does not require manual operation to add reaction liquid, thereby ensuring the safety of the detection process while eliminating errors caused by manual operation, and effectively improving the accuracy of the detection results.

[0073] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A fully automatic detection device for diammonium phosphate content, characterized in that: The invention comprises a detection box (1), a grinding box (2), a pure water storage tank (3), an acetone storage tank (4), a filter tank (5), a reaction color development pool (6), an ascorbic acid storage tank (7), an ammonium molybdate storage tank (8), a colorimetric box (9), and a control mechanism, which are arranged inside the detection box (1); The top of the grinding box (2) is provided with a feeding port (21) which penetrates the detection box body (1) and protrudes outwards, and a rotatable grinding roller (22) is provided inside the grinding box (2); The pure water storage tank (3) is provided with a heating mechanism (31) connected to the control mechanism, and is also provided with a pure water injection pipeline (32) connected to the grinding box (2); the acetone storage tank (4) is provided with an acetone injection pipeline (41) connected to the grinding box (2); The filter tank (5) is arranged below the grinding box (2), and is provided with a dissolved sample liquid pipeline (51) connected to the grinding box (2); The reaction color development pool (6) is arranged below the filter tank (5), and is provided with a filtered sample liquid pipeline (61) connected to the filter tank (5); The ascorbic acid storage tank (7) is provided with an ascorbic acid injection pipeline (71) connected to the reaction color development pool (6), and the ammonium molybdate storage tank (8) is provided with an ammonium molybdate injection pipeline (81) connected to the reaction color development pool (6); The colorimetric box (9) is a closed box body, and is provided with a color development sample liquid pipeline (91) connected to the reaction color development pool (6).

2. The fully automatic detection device for diammonium phosphate content according to claim 1, characterized in that: The pure water injection pipeline (32), the acetone injection pipeline (41), the ascorbic acid injection pipeline (71), the ammonium molybdate injection pipeline (81), and the color development sample liquid pipeline (91) are all provided with electromagnetic control valves (12) and injection pump bodies (13); the dissolved sample liquid pipeline (51) and the filtered sample liquid pipeline (61) are all provided with electromagnetic control valves (12). The electromagnetic control valve (12) and the injection pump body (13) are both connected to the control mechanism.

3. The fully automatic detection device for diammonium phosphate content according to claim 2 is characterized in that: Liquid injection nozzles are provided at the ends of the pure water injection pipe (32) and the acetone injection pipe (41) extending into the grinding box (2); Liquid injection nozzles are provided at the ends of the ascorbic acid injection pipe (71) and the ammonium molybdate injection pipe (81) extending into the reaction color development pool (6).

4. The fully automatic detection device for diammonium phosphate content according to claim 1 is characterized in that: The detection box (1) is provided with a pure water filling port (14), an acetone filling port (15), an ascorbic acid filling port (16), and an ammonium molybdate filling port (17); The pure water storage tank (3) is provided with a pure water liquid adding pipeline (33) connected to the pure water liquid adding port (14), the acetone storage tank (4) is provided with an acetone liquid adding pipeline (42) connected to the acetone liquid adding port (15), the ascorbic acid storage tank (7) is provided with an ascorbic acid liquid adding pipeline (72) connected to the ascorbic acid liquid adding port (16), and the ammonium molybdate storage tank (8) is provided with an ammonium molybdate liquid adding pipeline (82) connected to the ammonium molybdate liquid adding port (17).

5. The fully automatic detection device for diammonium phosphate content according to claim 1 is characterized in that: The filter tank (5) is provided with a hydrophilic membrane to filter out organic matter and insoluble matter in the sample solution; The reaction color development pool (6) is provided with a stirring mechanism connected to the control mechanism, and the stirring mechanism is a magnetic stirrer.

6. The fully automatic detection device for diammonium phosphate content according to claim 1 is characterized in that: The detection box (1) is provided with a filter can replacement port (18) adapted to the filter can (5), so that the filter can (5) can be removed and replaced through the filter can replacement port (18).

7. The fully automatic detection device for diammonium phosphate content according to claim 1 is characterized in that: A waste liquid storage tank (19) is also provided in the detection box (1), and the waste liquid storage tank (19) is provided with a waste liquid collection pipe (191) which is respectively connected to the grinding box (2), the reaction color development pool (6), and the colorimetric box (9); The waste liquid collection pipeline (191) is provided with an electromagnetic control valve (12) and a liquid injection pump body (13) connected to the control mechanism.

8. The fully automatic detection device for the content of diammonium phosphate according to claim 7, characterized in that: The detection box (1) is provided with a waste liquid storage tank replacement port (192) adapted to the waste liquid storage tank (19), so that the waste liquid storage tank (19) can be disassembled and replaced through the waste liquid storage tank replacement port (192).

9. The fully automatic detection device for diammonium phosphate content according to claim 1, characterized in that: The grinding box (2) is provided with an arc-shaped grinding portion (23) adapted to the grinding roller (22); The grinding box (2) is provided with a grinding motor (24) connected to the grinding roller (22), and the grinding motor (24) is connected to the control mechanism.

10. The fully automatic detection device for diammonium phosphate content according to claim 1, characterized in that: The colorimetric box (9) is provided with a sealed colorimetric cell and a spectrophotometer connected to the control mechanism.

Images