CN220170689U - A preceding stage ashing digestion device for organic fertilizer phosphorus/potassium content measurement - Google Patents
A preceding stage ashing digestion device for organic fertilizer phosphorus/potassium content measurement Download PDFInfo
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- CN220170689U CN220170689U CN202321659239.0U CN202321659239U CN220170689U CN 220170689 U CN220170689 U CN 220170689U CN 202321659239 U CN202321659239 U CN 202321659239U CN 220170689 U CN220170689 U CN 220170689U
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- 230000029087 digestion Effects 0.000 title claims abstract description 118
- 238000004380 ashing Methods 0.000 title claims abstract description 56
- 239000003895 organic fertilizer Substances 0.000 title claims abstract description 34
- 229940053653 phosphorus / potassium Drugs 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 230000001502 supplementing effect Effects 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000006978 adaptation Effects 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 20
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 12
- 229910052700 potassium Inorganic materials 0.000 description 12
- 239000011591 potassium Substances 0.000 description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- 239000002689 soil Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001079 digestive effect Effects 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003738 black carbon Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005048 flame photometry Methods 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- ALTWGIIQPLQAAM-UHFFFAOYSA-N metavanadate Chemical compound [O-][V](=O)=O ALTWGIIQPLQAAM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a pre-ashing digestion device for measuring the phosphorus/potassium content of an organic fertilizer, which comprises a digestion bottle and a cupel, wherein the digestion bottle is connected with the cupel through a detachable connection structure, and is provided with a liquid pipeline and a valve mouth, so that the function of automatic liquid supplementing can be realized. The device can conveniently carry out ashing digestion treatment on the sample, shortens the measurement time, and improves the measurement accuracy and efficiency. The device is also provided with structures such as a heat conduction module, a bracket, a grid cup and the like, so that the heat conduction performance of the digestion bottle can be improved, and the level and stability of the digestion bottle are maintained. The device is also suitable for a cupel frame and an ashing furnace, and can conveniently place the cupel in the ashing furnace for ashing treatment, so that the movement and dumping of the cupel are avoided, and the safety and the accuracy of the ashing process are ensured. Compared with the prior art, the utility model has the advantages of reasonable structural design, simple and convenient operation, batch detection, accurate and reliable detection result and the like.
Description
Technical Field
The utility model relates to the field of chemical industry detection, in particular to a pre-ashing digestion device for determining the phosphorus/potassium content of an organic fertilizer.
Background
The fertilizer is an important agricultural production data, and is the grain of grains. The fertilizer plays an irreplaceable role in promoting agricultural production and grain yield increase. However, since a large amount of inorganic fertilizers are applied and even abused for many years, a large amount of farmland soil in China is degraded, the soil structure is seriously damaged and even hardened, and the soil environment is urgently required to be restored and improved. The organic fertilizer has more and more prominent effects of improving soil structure, environment and improving soil, and the state greatly advocates and guides the application of green organic fertilizer at present so as to improve and regulate the physical and chemical properties of the soil, improve the aggregate structure of the soil, prevent soil hardening and water storage and soil moisture conservation, thereby ensuring stable yield and income of agricultural products and improving the quality of the agricultural products. At present, organic fertilizer products are used for replacing fertilizer products and are already listed in the outline of national agricultural development. The use ratio of the organic fertilizer is gradually expanded in the future, and the organic fertilizer is expected to reach 2300 ten thousand tons by 2023. However, the existing organic fertilizer products have relatively low production conditions, technical requirements and production cost, and have problems in terms of rough manufacturing and product quality. The detection workload of the organic fertilizer is further increased, and the exploration of a faster and more accurate detection method is an important task for detection work in the future. However, the sample pretreatment method specified by the method (D.1.4.1) for determining the total phosphorus and total potassium content of the organic fertilizer in the current standard (NY/T525-2021) of the organic fertilizer has the advantages of long digestion time (more than 24 hours), slow process, occupation of a large amount of laboratory space, incomplete digestion, inconvenient operation, difficult implementation and difficult batch treatment of the samples, directly influences the aging of the organic fertilizer inspection, and is unfavorable for the efficient development of the organic fertilizer inspection work.
The best method for sample pretreatment should be: the digestion and decomposition are complete, the time is short, the operation is simple and convenient, the batch detection can be carried out, the detection result is accurate, and the data is reliable.
The method for pre-treating the sample specified by the method (D.1.4.1) for measuring the total phosphorus and total potassium content of the organic fertilizer in the standard of organic fertilizer (NY/T525-2021) at present only adopts the method for sterilizing and boiling the sample together with sulfuric acid and hydrogen peroxide, so that organic matters in the sample are destroyed, wherein phosphorus and potassium contained in the sample are dissolved in digestive juice. Then, the phosphorus content is measured by adopting the reaction of phosphate ions in the digestive liquid, metavanadate and molybdic acid under certain acidity to form yellow ternary mixed acid. In a certain concentration range of 1mg/L-20mg/L, the absorbance of the yellow solution is in a proportional relation with the phosphorus content, and the phosphorus content is quantified by a spectrophotometry. The characteristic spectrum of potassium element is emitted by digestion liquid under the excitation of flame, the potassium concentration in the liquid to be measured is in a proportional relation with the emission intensity in a certain concentration range, and the potassium content can be obtained by measuring the emission intensity of the potassium element in the sample solution under the condition same as the standard curve. The main technical problems are as follows:
1. in the current heating process, a sample is generally directly put into a digestion bottle and added with a digestion solution and put into a heating box, so that on one hand, the digestion state of the inner side cannot be clearly observed, and the digestion is incomplete after the sample is taken out (black residues exist in the digestion solution) due to inconvenient taking out.
2. The existing equipment is not special equipment, occupies a large amount of laboratory space, time and is not easy to operate, and particularly, samples are not easy to process in batches, the aging of the organic fertilizer inspection is directly affected, the operation is not easy, and the labor is consumed.
3. In the current operation, on the one hand, the uniformity of the temperature of digestion in the digestion space cannot be effectively ensured in the digestion process of the current equipment, and whether the uniformity of the temperature in the digestion process exists in the same batch of inspection process cannot be ensured, so that the accuracy of inspection is influenced.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a pre-digestion treatment device for measuring the total nitrogen content of organic fertilizer, which has reasonable structural design and is convenient for digestion in batches.
The utility model solves the problems by adopting the following technical scheme: a preceding stage ashing digestion device for organic fertilizer phosphorus/potassium content measurement, including digestion bottle and cupel, digestion bottle and cupel's connector be connected through detachable connection structure, digestion bottle be provided with the liquid pipeline, the liquid pipeline be adapted with the valve mouth.
Further: the detachable connecting structure adopts a thread structure, and sealing rubber strips are arranged above the thread structure.
Further: the liquid pipeline and digestion bottle connection position be provided with the transition cavity, the transition cavity be half funnel form, the arc section of transition cavity sets up relative liquid pipeline's downside.
Further: the body size of the digestion bottle is mutually matched with the digestion hole size of the digestion instrument.
Further: the digestion bottle is adapted with a heat conduction module, the heat conduction module heating module adopts a graphite heating module, a cylinder body of the graphite heating module is mutually adapted with a digestion hole, the cylinder body of the graphite heating module is provided with equidistant strip-shaped grooves, a grid cup is provided with plug strips matched with the strip-shaped grooves, and the plug strips are L-shaped.
Further: the heat conduction module adaptation be equipped with the support, the support include supporting plate and net cup, net cup top be provided with spacing portion, the backup pad be provided with the slotted hole, net cup adaptation on the slotted hole and spacing through spacing portion adaptation, clear up the bottle setting in net cup and erect on the supporting plate, will clear up the bottle and put into the holding tank through the supporting plate.
Further: the end part of the liquid pipeline is provided with a pipe joint which can be matched with equipment for connecting the pipeline with automatic liquid supplementing.
Further: the cupel is adapted with a corresponding cupel frame, the cupel frame is divided into an upper layer and a lower layer, the upper layer is provided with two groups of grid surfaces formed by fixing rods, the grid surface below is contacted with the bottom of the placed cupel, the grid surface above is adapted with the external diameter of the cupel, and the lower layer is provided with a drawing plate.
Further: the ash tray frame and ashing stove looks adaptation, specifically, the ashing stove in be provided with the ashing chamber, ashing chamber left and right sides symmetry be provided with the spout, spout sliding connection have the ashing frame.
Compared with the prior art, the utility model has the following advantages and effects:
1. the detachable connection structure of the digestion bottle and the cupel is adopted, so that the ashed sample is convenient to transfer and digest, the convenience and the efficiency of operation are improved, and meanwhile, the sample components are ensured to be completely collected in the transfer process, and the loss of the operation sample is not easy to cause.
2. The liquid supplementing device is provided with the liquid pipeline and the valve mouth, and can be connected with liquid supplementing equipment to supplement liquid, so that errors and inconvenience of manual liquid supplementing are avoided, liquid omission in the liquid supplementing process is avoided, stability and accuracy of the digestion process are ensured, and meanwhile, the holding operation of experimenters is facilitated.
3. The utility model is provided with the transition cavity, can reduce the residual solution in the bottle, effectively prevent the liquid from overflowing or flowing back, and reduce the loss and pollution of the sample.
4. The digestion bottle is provided with the heat conduction module, so that the heat conduction performance of the digestion bottle can be effectively improved, the uniformity of the digestion temperature of the digestion bottle is ensured, the digestion time is shortened, the digestion bottle can be protected from being damaged, and the service life is prolonged.
5. The utility model is provided with the bracket and the grid cup, so that the digestion bottle can be conveniently placed on the digestion instrument, the level and stability of the digestion bottle are maintained, the digestion bottle is prevented from inclining or sliding down, and meanwhile, the digestion condition is conveniently and integrally taken up and checked, and the digestion environment of the digestion bottle in batch operation is ensured to be consistent.
6. The cupel frame is provided with the drawing plate, so that the cupel can be conveniently placed in an ashing furnace for ashing treatment, the movement and the dumping of the cupel are avoided, and the safety and the accuracy of the ashing process are ensured.
Drawings
FIG. 1 is a schematic diagram of the cooperation of a digestion vessel with a cupel according to an embodiment of the utility model.
FIG. 2 is a schematic diagram of a digestion instrument according to an embodiment of the utility model.
FIG. 3 is a schematic diagram of a heating module according to an embodiment of the utility model.
FIG. 4 is a schematic view showing the structure of an ash tray according to an embodiment of the utility model.
FIG. 5 is a schematic view showing the structure of an ashing furnace according to the embodiment of the present utility model.
Figure number: the digestion bottle 1, the bottle body 101, the liquid pipeline 102, the valve mouth 103, the transition cavity 104, the pipe joint 105, the cupel 2, the thread structure 201, the sealing rubber strip 202, the digestion instrument 3, the equipment main body 301, the digestion hole 302, the containing groove 303, the supporting plate 304, the grid cup 305, the limiting part 306, the cylinder 307, the strip-shaped groove 308, the plug strip 309, the lifting block 310, the sliding shaft 311, the handle piece 312, the electric telescopic rod 313, the temperature control host 314, the display screen 315, the operation key panel 316, the ashing rack 4, the lower support 401, the upper support 402, the grid surface 403, the drawing plate 404, the ashing furnace 5, the ashing cavity 501, the placing groove 502, the sealing door 503, the equipment host 504 and the man-machine interaction screen 505.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
Referring to fig. 1-5, the embodiment relates to a pre-ashing digestion device for determining phosphorus/potassium content of an organic fertilizer, which comprises a digestion bottle 1 and a cupel 2, wherein a connection port of the digestion bottle 1 and the cupel 2 is connected through a detachable connection structure, the digestion bottle 1 is provided with a liquid pipeline 102, and the liquid pipeline 102 is adapted with a valve mouth 103.
The method for measuring the total phosphorus and total potassium content of the organic fertilizer by using the method comprises the following steps:
1. the organic fertilizer sample is weighed to about 0.5 g-1.0 g (accurate to 0.0001 g), placed in a cupel 2, gently shaken to be spread and placed on an ashing frame 4, working parameters of an ashing furnace 5 are set, for example, the temperature is maintained for 30 minutes at 500 ℃, then the temperature is gradually increased to 800 ℃ for 1-2 hours, and the ashing furnace 5 is started.
2. After the ashing is completed, the sealing door 503 of the ashing furnace 5 is opened, the ashing frame 4 is slid out of the ashing chamber 501, and the cupel 2 is taken out. At this time, the sample has been ashed to a white or off-white powder (no black carbon, secondary ashing operation is required if the ashed state is not reached).
3. The cupel 2 is horizontally placed on a workbench, the digestion bottle 1 is inversely placed on the cupel 2 to be connected and matched with the cupel 2 through a detachable connecting structure, the digestion bottle 1 is inversely placed on the cavity of the cupel 2, then the digestion bottle 1 is positively placed, the valve mouth 103 is opened, digestion liquid is injected into the digestion bottle 1 through the liquid pipeline 102, in the embodiment, for example, 5mL of sulfuric acid is added into the digestion bottle 1 by using a syringe, then the valve mouth 103 is closed, and then the digestion bottle 1 is positively placed and inversely placed for multiple times to oscillate, so that the digestion liquid and ashed samples are fully mixed.
4. Setting the digestion parameters, such as 220 ℃ in the embodiment, for 30 minutes, and raising the temperature to 350 ℃ and keeping for 1-2 hours, by placing the digestion bottle 1 and the digestion hole 302 of the digestion instrument 3;
5. after digestion is completed, the digestion instrument 3 is closed and the digestion bottle 1 is waited for cooling to room temperature. At this time, the digestion solution is a white-gray suspension, and the blank is clear liquid. Taking out the digestion tank 1, opening a valve 103 of a liquid pipeline 102 on the digestion tank 1, adding a proper amount of deionized water into the digestion tank 1 by using a syringe, diluting the sample liquid to about 50mL, and shaking uniformly.
6. The digested solution is poured out of the liquid pipeline 102 and transferred to a measuring test tube through a filter screen, corresponding treatment and analysis are carried out on the solution to be measured according to different measuring methods, and the total phosphorus and total potassium contents in the sample are calculated. For example, spectrophotometry may be used to determine total phosphorus content and flame photometry may be used to determine total potassium content.
The operation mode adopts a pre-stage ashing digestion device for measuring the phosphorus/potassium content of the organic fertilizer. The device comprises a digestion bottle 1 and a cupel 2, wherein the digestion bottle 1 is connected with the cupel 2 through a detachable connecting structure, and after digestion liquid is injected into the digestion bottle 1 and oscillated, the digestion bottle 1 is placed in a digestion instrument 3 for digestion treatment. And after digestion is finished, diluting the digestion solution, analyzing, and finally calculating the total phosphorus and total potassium content in the sample.
The operation mode can effectively solve the problem of measuring the total phosphorus and total potassium content of the organic fertilizer. While the conventional measurement method requires a long time, the pre-stage ashing digestion treatment device used in the embodiment can perform the ashing digestion treatment on the sample in a short time, thereby improving the measurement speed and accuracy. In addition, the device can avoid the problems of sample pollution, error and the like, thereby obtaining more accurate and reliable results.
Referring to fig. 1, the detachable connection structure adopts a threaded structure 201, and a sealing rubber strip 202 is arranged above the threaded structure, so that tight connection between the digestion bottle 1 and the cupel 2 can be realized, leakage of gas or liquid is prevented, and safety and accuracy of the digestion process are ensured.
In this embodiment, the connection position between the liquid pipeline 102 and the digestion bottle 1 is provided with a transition cavity 104, the transition cavity 104 is semi-funnel-shaped, and the arc section of the transition cavity 104 is arranged opposite to the lower side of the liquid pipeline 102, so that the residue of the solution in the bottle can be reduced, the overflow or backflow of the liquid can be effectively prevented, and the loss and pollution of the sample can be reduced.
Referring to fig. 2, the size of the body of the digestion bottle 1 is mutually matched with the size of the digestion hole 302 of the digestion instrument 3, so that the matching use of the digestion bottle 1 and the digestion instrument 3 is realized, and the digestion efficiency and quality are improved.
Referring to fig. 3, the digestion bottle 1 is adapted with a heat conduction module, the heat conduction module heating module adopts a graphite heating module, the cylinder 307 of the graphite heating module is mutually adapted with the size of the digestion hole 302, the cylinder 307 of the graphite heating module is provided with equidistant strip grooves 308, the grid cup 305 is provided with plug strips 309 matched with the strip grooves 308, the plug strips 309 are L-shaped, the heat conduction performance of the digestion bottle 1 can be effectively improved, the digestion time is shortened, the energy consumption is saved, the digestion bottle 1 can be protected from being damaged, and the service life is prolonged.
In this embodiment, the heat conduction module be fit with the support, the support include support plate 304 and net cup 305, net cup 305 top be provided with spacing portion 306, the backup pad be provided with the slotted hole, net cup 305 adaptation on the slotted hole and spacing through spacing portion 306 adaptation, clear up bottle 1 set up in net cup 305 and erect with support plate 304 on, put into holding tank 303 with clear up bottle 1 through support plate 304, can conveniently put clear up bottle 1 and clear up on the appearance 3 to keep clear up bottle 1's level and stability, prevented to clear up bottle 1's slope or landing.
In this embodiment, the end of the liquid pipeline 102 is provided with the pipe interface 105, and the pipe interface 105 can be adapted to the device for connecting the pipeline and automatic liquid supplementing, so that automatic and intelligent operation is realized, and convenience and efficiency of operation are improved.
Referring to fig. 4-5, the cupel 2 is adapted with a corresponding cupel 2 rack, the cupel 2 rack is divided into an upper layer and a lower layer, the upper layer is provided with two groups of grid surfaces 403 formed by fixing rods, the lower grid surface 403 contacts with the bottom of the placed cupel 2, the upper grid surface 403 is adapted with the outer diameter of the cupel 2, and the lower layer is provided with a drawing plate 404. The ash pan 2 frame and ashing stove 5 looks adaptation, specifically, ashing stove 5 in be provided with ashing chamber 501, ashing chamber 501 left and right sides symmetry be provided with the spout, spout sliding connection have ashing frame 4, can conveniently place ash pan 2 in ashing stove 5 and carry out ashing treatment, avoided the removal and the empting of ash pan 2, guaranteed the security and the accuracy of ashing process.
The foregoing description of the utility model is merely exemplary of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the scope of the utility model as defined in the accompanying claims.
Claims (9)
1. A preceding stage ashing digestion device for organic fertilizer phosphorus/potassium content determination, its characterized in that: including resolving bottle and cupel, the connector of resolving bottle and cupel be connected through dismantling connection structure, resolving bottle be provided with the liquid pipeline, the liquid pipeline be adapted with the valve mouth.
2. The pre-ashing digestion device for determining the phosphorus/potassium content of an organic fertilizer according to claim 1, wherein: the detachable connecting structure adopts a thread structure, and sealing rubber strips are arranged above the thread structure.
3. The pre-ashing digestion device for determining the phosphorus/potassium content of an organic fertilizer according to claim 1, wherein: the liquid pipeline and digestion bottle connection position be provided with the transition cavity, the transition cavity be half funnel form, the arc section of transition cavity sets up relative liquid pipeline's downside.
4. The pre-ashing digestion device for determining the phosphorus/potassium content of an organic fertilizer according to claim 1, wherein: the body size of the digestion bottle is mutually matched with the digestion hole size of the digestion instrument.
5. The pre-ashing digestion device for determining the phosphorus/potassium content of an organic fertilizer according to claim 1, wherein: the digestion bottle is adapted with a heat conduction module, the heat conduction module heating module adopts a graphite heating module, a cylinder body of the graphite heating module is mutually adapted with a digestion hole, the cylinder body of the graphite heating module is provided with equidistant strip-shaped grooves, a grid cup is provided with plug strips matched with the strip-shaped grooves, and the plug strips are L-shaped.
6. The pre-ashing digestion device for determining the phosphorus/potassium content of an organic fertilizer according to claim 5, wherein: the heat conduction module adaptation be equipped with the support, the support include supporting plate and net cup, net cup top be provided with spacing portion, the backup pad be provided with the slotted hole, net cup adaptation on the slotted hole and spacing through spacing portion adaptation, clear up the bottle setting in net cup and erect on the supporting plate, will clear up the bottle and put into the holding tank through the supporting plate.
7. The pre-ashing digestion device for organic fertilizer phosphorus/potassium content determination according to any one of claims 1-6, wherein: the end part of the liquid pipeline is provided with a pipe joint which can be matched with equipment for connecting the pipeline with automatic liquid supplementing.
8. The pre-ashing digestion device for organic fertilizer phosphorus/potassium content determination according to any one of claims 1-6, wherein: the cupel is adapted with a corresponding cupel frame, the cupel frame is divided into an upper layer and a lower layer, the upper layer is provided with two groups of grid surfaces formed by fixing rods, the grid surface below is contacted with the bottom of the placed cupel, the grid surface above is adapted with the external diameter of the cupel, and the lower layer is provided with a drawing plate.
9. The pre-ashing digestion device for organic fertilizer phosphorus/potassium content determination according to any one of claims 1-6, wherein: the ash tray frame and ashing stove looks adaptation, specifically, the ashing stove in be provided with the ashing chamber, ashing chamber left and right sides symmetry be provided with the spout, spout sliding connection have the ashing frame.
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| CN202321659239.0U CN220170689U (en) | 2023-06-28 | 2023-06-28 | A preceding stage ashing digestion device for organic fertilizer phosphorus/potassium content measurement |
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| CN202321659239.0U CN220170689U (en) | 2023-06-28 | 2023-06-28 | A preceding stage ashing digestion device for organic fertilizer phosphorus/potassium content measurement |
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