CN112763666A - Portable compost maturity quality rapid detection device - Google Patents
Portable compost maturity quality rapid detection device Download PDFInfo
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- CN112763666A CN112763666A CN202110105073.7A CN202110105073A CN112763666A CN 112763666 A CN112763666 A CN 112763666A CN 202110105073 A CN202110105073 A CN 202110105073A CN 112763666 A CN112763666 A CN 112763666A
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- 238000001514 detection method Methods 0.000 title claims abstract description 146
- 239000002361 compost Substances 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 15
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 15
- 239000010865 sewage Substances 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 230000033116 oxidation-reduction process Effects 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000009264 composting Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000012466 permeate Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000003864 humus Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000010667 large scale reaction Methods 0.000 description 1
- -1 meanwhile Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012031 short term test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Combustion & Propulsion (AREA)
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
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Abstract
The invention discloses a portable compost maturity quality rapid detection device, which belongs to the technical field of maturity quality detection and comprises a bracket and a plurality of detection bodies, wherein each detection body comprises a detection box, an automatic sampling device and a ventilation device, and the detection box is provided with a liquid sampling port, a solid sampling port and a gas sampling port; a water-permeable partition plate is arranged in the detection box, and a cavity below the water-permeable partition plate in the detection box is used for collecting decomposed liquid; the detection box is internally provided with a detection device, a cleaning device, a disinfection device, a water bath heating device, a fan for uniformly dispersing the decomposed gas and a stirring device for uniformly dispersing the decomposed solid sample. The compost detector is simple in structure, small in occupied space, high in detection accuracy, convenient to use and strong in practicability, provides convenience for detection personnel, greatly improves detection speed and detection efficiency, and is suitable for quickly detecting all composts.
Description
Technical Field
The invention belongs to the technical field of compost maturity quality detection, and relates to a rapid compost maturity quality detection device, in particular to a portable rapid compost maturity quality detection device.
Background
The compost can be applied to a farmland as a fertilizer after professional fermentation, and when the compost is thoroughly decomposed, the compost needs to be placed in a large-scale reaction kettle for centralized treatment so as to control reaction conditions such as temperature and humidity in the composting process, and the non-thoroughly decomposed compost product has an inhibiting effect on the growth of plants, so that in the composting process, the thoroughly decomposed degree of the compost needs to be detected so as to control the thoroughly decomposed reaction conditions, or after the composting is completed, the thoroughly decomposed quality of the compost is detected so as to judge whether the composting is qualified.
In the prior art, the quality of compost maturity is detected by manually sampling at a sampling port of a reaction kettle and then placing the compost in a laboratory to detect physical indexes, chemical indexes (including humus) and biological indexes of the compost, but with the maturity of the maturity technology, the chemical indexes (including humus) and the biological indexes are mostly in an experimental stage and are used for researching indexes of the maturity reaction conditions, and after the reaction conditions are mature, the maturity quality can be judged by detecting the physical indexes. However, the device that does not have the short-term test at present still needs the manual sampling, detects the quality of becoming thoroughly decomposed in the laboratory, and not only the sampling process is complicated like this, and the time of waiting for the result is longer, extravagant manpower and financial resources moreover, convenience greatly reduced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a portable device for rapidly detecting the composting quality, so as to achieve the purposes of rapidly detecting the composting quality, simultaneously detecting various different types of composts and being convenient and fast to use.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a portable compost maturity quality rapid detection device comprises a support and a plurality of detection bodies fixedly arranged on the support, wherein each detection body comprises a detection box, an automatic sampling device used for extracting a sample to be detected and a ventilation device used for introducing gas into the detection box, and the detection box is provided with a liquid sampling port, a solid sampling port and a gas sampling port;
a water-permeable partition plate for placing a sample is arranged in the detection box, and a cavity below the water-permeable partition plate in the detection box is used for collecting decomposed liquid;
a detection device for determining the quality of the rotten food is arranged in the detection box, and a cleaning device and a disinfection device are further arranged in the detection box;
the detection box is internally provided with a water bath heating device for maintaining a thoroughly decomposed environment, a fan for uniformly dispersing the thoroughly decomposed gas and a stirring device for uniformly dispersing the thoroughly decomposed solid sample.
As a limitation of the present invention: be equipped with the gyro wheel on the support, it is equipped with four to detect the body, fixes on the support in proper order.
As a further limitation of the invention: the automatic sampling device comprises a sewage pump, wherein the inlet of the sewage pump is connected with a sample inlet pipe, and the outlet of the sewage pump is communicated with the detection box through a sample outlet pipe; the ventilation device is a fan.
As another limitation of the present invention: the detection device comprises a temperature sensor, a humidity sensor, an air flow sensor, an oxygen concentration sensor, a carbon dioxide sensor and an oxidation-reduction sensor which are arranged in a detection box.
As a limitation of the present invention: the cleaning device comprises a spray header arranged at the top in the detection box, and the disinfection device comprises an ultraviolet disinfection lamp arranged on the inner wall of the detection box.
As a further limitation of the invention: the water bath heating device comprises a water tank arranged in the detection box and a resistance rod fixedly arranged in the water tank.
As still further limiting the invention: and a flow guide cover for preventing the sample from entering is arranged above the water tank.
As a third limitation of the present invention: and a filter membrane is paved on the water-permeable partition plate.
As a limitation of the present invention: the stirring device comprises a motor arranged outside the detection box and a stirring rod rotationally connected to an output shaft of the motor, and the stirring rod is arranged inside the detection box.
As a fourth limitation of the present invention: the detection box is made of transparent materials, a heat preservation layer wraps the detection box, and a transparent observation window is arranged on the heat preservation layer.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the compost sample is pumped into the detection box through the sewage pump, so that the trouble of manual sampling is saved, the temperature and the humidity in the decomposing process are maintained through water bath heating, the sample still keeps the basic conditions in the reaction kettle in the detection process, the detection precision is improved, and the detection data distortion is avoided; the detection box can detect different forms of solid, liquid and gas of a sample, so that the detection diversity is increased, and the detection accuracy is improved; the stirring device can uniformly disperse the sample, and prevent the solid accumulation from influencing the detection result; according to the invention, the plurality of detection boxes are fixed on the bracket, so that not only can different samples be contrasted and detected at the same time, but also the detection efficiency can be improved, after the detection is finished, the cleaning device and the disinfection device can clean and disinfect the interior of the detection boxes, so that the sample residue is avoided, the cross mixing is avoided, the bacteria residue in the detection boxes can also be prevented, and the practicability is strong;
(2) the roller on the bracket can enable the detection box to move at will, so that sampling is convenient, the use convenience is improved, and the labor intensity is reduced;
(3) the detection of the invention not only can be observed manually, but also can detect various physical indexes of compost maturity through various sensors, the detection is rapid, and the accuracy is good;
(4) the spray header can carry out all-around flushing in the detection box and carry out disinfection through the ultraviolet disinfection lamp, and has the advantages of simple structure, small occupied space and high convenience;
(5) the resistor rod is placed in the water tank, the requirements of temperature and humidity can be met while heating is carried out, the flow guide cover can prevent a sample from entering the water tank in the process of extracting the sample, the cleaning load can be reduced, and the water bath heating energy can be reused;
(6) the motor of the invention drives the stirring rod to rotate, so that the sample is uniformly dropped on the water-permeable partition plate, the automation degree is high, and the use is convenient;
(7) the filter membrane can improve the fineness of decomposed liquid and increase the detection precision, and the heat-insulating layer can effectively maintain the environment in the detection box and improve the detection efficiency.
In conclusion, the compost detector has the advantages of simple structure, small occupied space, high detection accuracy, convenience in use and strong practicability, provides convenience for detection personnel, greatly improves the detection speed and the detection efficiency, and is suitable for quickly detecting all composts.
Drawings
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the detection body 3 according to the embodiment of the present invention.
In the figure: 1-bracket, 2-roller, 3-detection body, 4-detection box, 5-heat preservation layer, 6-sewage pump, 61-sample inlet pipe, 62-sample outlet pipe, 7-stirring device, 71-motor, 72-stirring rod, 8-water bath heating device, 81-water tank, 82-resistance rod, 9-diversion cover, 10-water permeable clapboard, 11-fan, 12-ultraviolet disinfection lamp, 13-spray head, 14-fan, 15-gas sampling port, 16-solid sampling port, 17-liquid sampling port, 18-temperature sensor, 19-humidity sensor, 20-gas flow sensor, 21-oxygen concentration sensor, 22-carbon dioxide sensor, 23-oxidation reduction sensor, 24-a separator.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the portable compost maturity quality rapid detection apparatus described herein is a preferred embodiment, is for purposes of illustration and explanation only, and is not to be construed as limiting the present invention.
Embodiment portable compost maturity quality rapid detection device
In this embodiment, as shown in fig. 1-2, a portable compost maturity quality rapid detection apparatus includes a support 1 and four detection bodies 3 fixedly disposed on the support 1, the support 1 is provided with rollers 2 contacting with the ground, and the detection bodies 3 are paired and grouped, and are sequentially fixed along the height direction of the support 1.
The detection body 3 comprises a detection box 4, an automatic sampling device for extracting a sample to be detected and a ventilation device for introducing gas into the detection box 4. The detection box 4 is made of transparent materials, the heat preservation layer 5 wraps the outside of the detection box, and the heat preservation layer 5 is provided with a transparent observation window for observing the decomposition index inside the detection box 4. Be equipped with the baffle 10 that permeates water that is used for placing the sample in detection case 4, the baffle 10 that permeates water is divided into two cavities with the inside of detection case 4, and the cavity of the baffle 10 top that permeates water is used for placing the solid sample, and the cavity of the baffle 10 below that permeates water is used for collecting the liquid that becomes thoroughly decomposed, the baffle 10 upper berth that permeates water is equipped with the filter membrane, and the solid sample in the liquid that becomes thoroughly decomposed can be filtered to the filter membrane, increases the purity of liquid, avoids the solid sample to influence the colour of liquid. The detection case 4 is used for collecting and is equipped with liquid sample connection 17 on the cavity of thoroughly decomposed liquid to it is sealed through the lid, detection case 4 is used for holding and is equipped with solid sample connection 16 on the cavity of solid sample, and seals through the lid, the top of detection case 4 is equipped with gas sample connection 15 to it is sealed through the lid.
Automatic sampling device includes sewage pump 6, sewage pump 6's access connection advances appearance pipe 61 for be connected with reation kettle's sample connection, its export is through going out appearance pipe 62 and detection case 4 intercommunication, the export that goes out appearance pipe 62 is located the top of the baffle 10 that permeates water, makes the compost sample can fall on the baffle 10 that permeates water, sewage pump 6 is located inside the detection case 4 to separate through the space of baffle 24 with the detection. The ventilation device is a fan 11, the fan 11 is also positioned in the detection box 4, and the tightness of compost detection cannot be influenced in a chamber separated by a partition plate 24. The fan 11 introduces necessary air into the detection box 4 to meet the necessary conditions of composting reaction.
The detection box 4 is internally provided with a water bath heating device 8 for maintaining a thoroughly decomposed environment, the water bath heating device 8 comprises a water tank 81 arranged in the detection box 4 and a resistance rod 82 fixedly arranged in the water tank 81, the water tank 81 is fixedly arranged on the inner wall of the detection box 4, and water in the water tank 81 is heated through the resistance rod 82 to be changed into steam, so that the humidity requirement and the temperature requirement can be met. Basin 81 top is equipped with the water conservancy diversion lid 9 that prevents the sample and get into, when sewage pump 6 is when taking the sample, can produce certain pressure, and the sample can splash when discharging on the inner wall of detection case 4, and water conservancy diversion lid 9 can effectively avoid the sample to fall into in the basin 81, water conservancy diversion lid 9 washs conveniently, and the practicality is strong.
The detection box 4 is internally provided with a detection device for detecting the quality of the rotten food, and the detection device comprises a temperature sensor 18, a humidity sensor 19, an air flow sensor 20, an oxygen concentration sensor 21, a carbon dioxide sensor 22 and an oxidation-reduction sensor 23 which are arranged in the detection box 4. During the composting reaction process, liquid can be generated, the quality of the composting is judged through the color of the liquid, meanwhile, gas such as carbon dioxide or oxygen consumption can be generated, the gas is important parameters of oxidation reduction, and through detecting the indexes, detected data can be obtained quickly and visually, and the detection efficiency and accuracy are improved.
The detection box 4 is also internally provided with a fan 14 for uniformly dispersing the decomposed gas and a stirring device 7 for uniformly dispersing the decomposed solid sample. The fan 14 can rapidly and uniformly disperse the gas in the detection box 4, so that the detection precision of various sensors is increased, and the detection efficiency is improved. Agitating unit 7 is including locating the outside motor 71 of detection case 4 and rotating the stirring rod 72 of connecting in the output shaft of motor 71, the inside of detection case 4 is located to the stirring rod 72 to be located out appearance pipe 62 under, can stir the sample that falls on permeable partition plate 10, can make the even dispersion of sample on permeable partition plate 10, can prevent again that the sample from piling up in the centre, block out appearance pipe 62.
A cleaning device and a disinfecting device are also arranged in the detection box 4; cleaning device is including locating the shower head 13 at top in detection case 4, degassing unit is including locating ultraviolet ray disinfection lamp 12 on the inner wall of detection case 4, shower head 13 is globular, can improve abluent quality and efficiency with the omnidirectional inside of spouting of cleaning fluid in detection case 4, ultraviolet ray disinfection lamp 12 can disinfect to detection case 4 inside, prevents to hide dirty the dirty of holding in detection case 4, influences the detection effect.
The invention greatly saves the detection time of workers, improves the detection efficiency, and has high detection precision and strong practicability.
Claims (10)
1. The utility model provides a quick detection device of portable compost maturity quality which characterized in that: the device comprises a support and a plurality of detection bodies fixedly arranged on the support, wherein each detection body comprises a detection box, an automatic sampling device used for extracting a sample to be detected and a ventilation device used for introducing gas into the detection box, and the detection box is provided with a liquid sampling port, a solid sampling port and a gas sampling port;
a water-permeable partition plate for placing a sample is arranged in the detection box, and a cavity below the water-permeable partition plate in the detection box is used for collecting decomposed liquid;
a detection device for determining the quality of the rotten food is arranged in the detection box, and a cleaning device and a disinfection device are further arranged in the detection box;
the detection box is internally provided with a water bath heating device for maintaining a thoroughly decomposed environment, a fan for uniformly dispersing the thoroughly decomposed gas and a stirring device for uniformly dispersing the thoroughly decomposed solid sample.
2. The portable compost maturity quality rapid detection apparatus of claim 1 characterized in that: be equipped with the gyro wheel on the support, it is equipped with four to detect the body, fixes on the support in proper order.
3. The portable compost maturity quality rapid detection apparatus of claim 2 characterized in that: the automatic sampling device comprises a sewage pump, wherein the inlet of the sewage pump is connected with a sample inlet pipe, and the outlet of the sewage pump is communicated with the detection box through a sample outlet pipe; the ventilation device is a fan.
4. A portable compost maturity quality rapid detection apparatus according to any one of claims 1-3 wherein: the detection device comprises a temperature sensor, a humidity sensor, an air flow sensor, an oxygen concentration sensor, a carbon dioxide sensor and an oxidation-reduction sensor which are arranged in a detection box.
5. The portable compost maturity quality rapid detection apparatus of claim 4 characterized in that: the cleaning device comprises a spray header arranged at the top in the detection box, and the disinfection device comprises an ultraviolet disinfection lamp arranged on the inner wall of the detection box.
6. The portable compost maturity quality rapid detection apparatus of claim 5 characterized in that: the water bath heating device comprises a water tank arranged in the detection box and a resistance rod fixedly arranged in the water tank.
7. The portable compost maturity quality rapid detection apparatus of any one of claims 6 wherein: and a flow guide cover for preventing the sample from entering is arranged above the water tank.
8. The portable compost maturity quality rapid detection apparatus of any one of claims 1-3, 5-7, characterized in that: and a filter membrane is paved on the water-permeable partition plate.
9. The portable compost maturity quality rapid detection apparatus of claim 8 characterized in that: the stirring device comprises a motor arranged outside the detection box and a stirring rod rotationally connected to an output shaft of the motor, and the stirring rod is arranged inside the detection box.
10. The portable compost maturity quality rapid detection apparatus of any one of claims 1-3, 5-7, 9, characterized in that: the detection box is made of transparent materials, a heat preservation layer wraps the detection box, and a transparent observation window is arranged on the heat preservation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110105073.7A CN112763666A (en) | 2021-01-26 | 2021-01-26 | Portable compost maturity quality rapid detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110105073.7A CN112763666A (en) | 2021-01-26 | 2021-01-26 | Portable compost maturity quality rapid detection device |
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| CN112763666A true CN112763666A (en) | 2021-05-07 |
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| CN202110105073.7A Pending CN112763666A (en) | 2021-01-26 | 2021-01-26 | Portable compost maturity quality rapid detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116458409A (en) * | 2023-04-28 | 2023-07-21 | 陕西省土地工程建设集团有限责任公司 | Crop cultivation matrix and preparation method and preparation device thereof |
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| CN212025220U (en) * | 2020-03-20 | 2020-11-27 | 湖南农业大学 | A laboratory temperature-controlled aerobic composting device with remote control function |
| CN111499442A (en) * | 2020-05-08 | 2020-08-07 | 中农新科(苏州)有机循环研究院有限公司 | Composting equipment for laboratory |
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