Partitioning is one of the most important aspects of seed testing, and its quality is related to the accuracy of all test items. In the production and processing enterprises, seeds need at least three inspections such as initial inspection, re-inspection, and finished product inspection. Especially in the northwest region, large-scale breeding, most of the harvest is based on households for the primary election, several households or dozens of households into a car to the station. Due to the detasseling between households and households and different plots and the quality of harvesting, the minimum number of sample points required for the initial inspection in accordance with the inspection procedures can no longer meet the requirements. This requires us to increase the number of sampling points, and the sampling of the water in the processing line with a 50 kg container in the re-testing will also increase the weight of the original sample and increase the workload of sample separation. How can we ensure the accuracy of sample division under the reduced labor intensity? We have made the following changes to the Zhongding sampler. Related Instruments: Electronic Load Cell 100Kva Silent Diesel Generator,12Kw Open Diesel Generator,14Kw Open Diesel Generator,Open Type Diesel Generator Sets Raygong Electrical Machinery Co., Ltd. , http://www.fagenerator.com
1 Normal use of the sampler program
1.1 Sampler structure The Zhongding sampler, also called conical sampler, is made of copper or iron sheet. The top is a funnel, the lower one is a trapdoor, and the bottom is a cone. The top of the cone is facing the center of the trap. The bottom of the cone is evenly divided into a number of equal grids, among which half of the grids are provided with small troughs. The sub-samples flow through the troughs into the inner layer and flow into the sample interface through the small orifices. In addition, half of the cells also have troughs. The sample flows into the outer layer through the small slot and enters the big mouth to another jack.
1.2 Method of use The sampler, the connector brush net, the valve is closed; the sample is placed in a funnel flat, the outlet is aligned with the connector; hand open the funnel below the funnel, so that the sample falls rapidly, the cone Divide into each compartment evenly, and finally fall into the sample holder so that the seeds are divided into two parts. Close the traps again. After the two sample holders are poured into the funnel at the same time, place the sample holders in the receptacle again. Open the valve; once again complete the previous process, so that after several cycles of mixing, one of the samples at the interface is torn down (depending on how much the sample is), and then the above procedure is repeated until the minimum weight required for the dispensing test item.
2 Insufficiency The number of samples that can be dispensed at a normal time is 2.5 kg. If the original sample volume is large, more than 2.5 kg should be divided. Take 4 kg as an example. It should be divided into two parts first. Calculated with a funnel capacity of 2.5 kg, one of them was sampled in accordance with the procedure described above and 1.0 kg of the sample was taken. The remaining one was also taken as 1.0 kg for each procedure in this procedure. Two 2.0 kg were then mixed according to the above procedure. In order to get the minimum inspection weight of corn seed samples. In this way, if the weight of the sample exceeds the weight of the funnel, three samples must be mixed to divide a representative sample. If the 7.5 kg sample is to be mixed 4 times and the sample is less than 0.8 kg each time, otherwise the funnel will not fit when the sample is mixed for the last time, failing to meet the representative requirements for sample dispensing. The more the weight of the sample is, the greater the number of dispensing times is, the greater the workload is, and the sample can be easily mixed during the dispensing process.
3 improved installation of sampler bracket
3.1 Materials Angle steel 2.5 cm × 2.5 cm Several dimensions, diameter 2.3 cm Steel tube 175 cm, width 5 cm length 11 cm 'with' two pieces of steel, large head diameter 35cm, small head diameter 10 cm conical white tin funnel, length 40 m Two 10 cm wide cloth cylinders, 3 plastic buckets with a capacity of 10 kg and a height of less than 40 cm, three or four pieces of wood with a length of 40 cm × 10 cm × 2.0 cm, and a diameter of 27 cm with a welded steel band, 2.8 cm in diameter and 10 cm long.
3.2 Fabrication of a 39 cm × 39 cm × 43 cm iron frame welded by angle iron, welding a 230 cm iron pipe in its upper right corner, using a 11 cm "belt" steel, a 2.8 cm diameter, 10 cm long iron pipe and strip round After soldering at 45°, it is placed about 130 cm in the iron pipe of the bracket (its height can be determined according to the height of the sampler and the sampler), and it can be moved around. When the iron frame is planked, leave a gap of 10cm in the middle. Connect two cloth cylinders with a rope at the exit of the sampler. The requirements are not loose and they can be removed and put on at any time.
3.3 Dividing process Place the splitter on the bracket and put it into the plastic bucket A. Put one of the cylinders completely on the left and right outlets of the splitter and extend it to "A"; turn the strip to Just above the separator funnel and place the conical ferrous funnel on top; Pour all the sample into the plastic bucket B, usually about 10 kg; Close the sampler shutter and pour the sample in the bucket B into the external conical funnel In the middle, the sample flows naturally through the sampler funnel and opens the valve to allow the sample to exit from the sampler exit (at this time, the outlet of the sampler has been combined into one by the cylinder) and flows into the A bucket; Put out into the B bucket, and then repeat the mixed fraction of the A bucket according to the above procedure; after the sample is fully mixed, the original sleeve that is placed on the left and right outlets of the sample spreader will only be extended to the left side outlet and be in the original position. The other cylinder is sleeved at the right outlet, and it is extended to the plastic C barrel that is placed on the right side of the rack at the same time; the sample in the B bucket is poured into the funnel again, and the sample flows into the A and C barrels due to the cylinder effect. A bucket does not move, remove the C bucket and replace it with the B bucket, and then place the C bucket Product into decimator dispensation, minimum weight B, C dispensing bucket alternately until the required sample.
4 advantages
4.1 Reducing working time, error The normal method is to flow in two sample holders each time the sample is mixed. This method re-mixes the sample in the plastic bucket during the roiling process due to the action of the cloth cylinder, which is greater than the effect of normal mixing. . A staff member can pick up 10 samples of 10 kg in half working day, and can complete registration, water testing and other preparation before germination.
4.2 The production is simple The essence is an external divider funnel, three large sample holder.
5 Precautions (1) Due to different grain sizes of different varieties and the same variety in different years, it is necessary to observe whether they are blocked during the mixing process so as not to affect the effect of the mixture. The heavy mix in the sample should be taken out before sampling, and the splitter with relatively large grid spacing around the bottom of the cone inside the sampler should be selected.
(2) Do not place the external funnel directly on the divider funnel. It is easy to deform the inside of the sampler due to its heavy weight when the sample is put in. When the valve is opened, the weight of the sample is continuously reduced. As a result, the shape of the sampler is changed again. It is easy to block and greatly prolong the dispensing. Time; sometimes the original sample is scrapped because different types or the same variety is not mixed as a result of not knowing the blockage. According to the above method, most of the sample weight is on the stent, and the inside of the sampler is not deformed and is not easy to be clogged.
(3) Before using the sampler, adjust the three corners separately so that the sampler is in a horizontal state. Otherwise, the sample weights in the left and right sample holders are not equal, and the original sample is not representative.
Zhong Ding sampler improvement program