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Grain fan, fan Henan, Anyang fan, fan Huaxian, Puyang fan, fan Xinxiang, Hebi fan, fan Zhoukou, Jiyuan fan, fan Changyuan, Neihuang fan, fan Weihui, Henan fire valve

Centrifugal fan is a kind of mobile warehouse cooling fan, as a general factory and building indoor ventilation, you can send air and ventilation. In the use of grain depot, can reduce the temperature of grain, the grain pile up like a mountain hand to maintain a low temperature state, to achieve the purpose of low-temperature grain storage.

Commonly used specifications of grain storage, other specifications can be customized.

When the impeller (or wind wheel, fan blade) rotates, a series of spiral motion is formed due to the centrifugal force. The gas rotation between the impeller accelerates, and the gas outside the pump body is sucked in from the suction port. The gas enters the outer gas ring and then returns to the base of the blade by means of differential pressure to form a strong air current. Thus, the gas moves in a spiral direction in the gas ring to achieve the purpose of supercharging. After the gas moves to the exhaust port, because the pressure is greater than the system pressure, the gas is discharged rapidly, and the use of blower suction and air supply function is especially extensive.

Main selection and description of grain suction machine, grain suction fan, suction material, high negative pressure fan:

because of wheat, corn, beans and other grain types have a certain shape and weight, coupled with the length of the pipeline, so the type of selection should take into account the speed of material absorption, the size of the pipe, the weight of the suction and feeding.

as wheat and corn, beans and other food by food grain suction machine suction fan suction high negative pressure fan work, should be fully in accordance with the corresponding parameters mentioned in the above table were selected, as Xun great choice of small principle.

 grain storage, food security and other experts repeated trial experiments achieved the best products, suitable for wheat, rice, corn, soybeans and other long-term storage, is the most ideal ventilation equipment of large granary, warehouse and open for bulk grain pile, the the air flow evenly into the grain pile, effective implementation of food cooling, precipitation, fumigation, air conditioning, conditioning, eliminate poison, odor and other multi operation. 6.1.1 the ventilation cage on the floor is inverted U shape, and GB708-88# cold rolled steel plate is adopted. Every three meters air duct and two lacing wires fixed. The upper cage air duct component is finished products, and the inner and outer parts thereof are treated with antisepsis. The materials approach to carefully check the specifications with the design requirements, material certificate and manufacturers inspection report is complete, to the supervision mechanism based on self acceptance qualified, can be used in engineering. 6.1.2 gas distribution box thickness 3mm, with stiffeners, the main duct thickness 2mm. The main air duct is on the side of the wall, the opening rate is 10%, the opening rate is 3% on the other side, the opening rate of the branch air duct is 30%, the opening rate of the inner side of the elbow is 3%, the opening rate of the outer side of the elbow is 10%, the opening shape is a bridge hole shape, and the opening size is not to be omitted from the grain. The connecting holes of the ground cage air duct and the gas distribution box are assembled on site, and the two are connected and fixed by pin posts. 6.1.3 inlet flange inside and outside wall brush antirust paint two, exposed part in brush reconcile paint two. The ventilation hole and air return cover plate is made by the manufacturer, and it can not leak under 700MPa pressure. The air distribution box and the wall is docking form, embedded ring angle full welded on the hole embedded parts, to prevent leakage of grain. The movable ventilator outlet is connected with the air inlet hole of the storehouse for a soft connection, and the flexible connecting piece is connected with the fan, and the flange is matched with the fan outlet flange and is connected with the air inlet of the air inlet. The flange shape is the same as that of the air vent and the air cover plate. All welds shall be fully welded. 6.2 the project of recirculation fumigation system for unilateral arrangement, position of circulation hole center, and if the doors and windows of the conflict, position can be adjusted, but the distance between the edge of the window should be not less than one meter, gas pipeline and gas sampling tube manufacturers by the order according to the specific warehouse structure adjustment installation size. The gas sampling tube is arranged on the grain surface after the grain is loaded, and the gas sampling end is at a meter lower than the grain surface, and the grain is embedded in the grain. The circulating draft pipe adopts 133*4 stainless steel pipe, and the gas sampling tube is 3 flexible plastic pipe. 6.2.1 valve installation according to design requirements to check the type of equipment, and according to gas flow to determine its installation direction, horizontal installation of the valve, the valve stem installed in the first half of the scope. 6.2.2 pipeline installation allows the coordinates and elevation deviation is 15mm, flange and pipe should be connected in parallel, the deviation is not greater than the diameter of flange 1.5/1000, and not more than 2mm, the cushion piece, gasket size should be consistent with the flange seal. When the 6.2.3 pipe is installed, the equipment support shall be level and firm, and the necessary adjustment shall be made according to the actual conditions in the installation process. After all the equipment has been connected, it is necessary to carry out trial operation. After the inspection meets the requirements, it will be put into use again. General provisions 6.3 ventilation and air conditioning engineering 6.3.1 ventilation and air conditioning equipment should be packing list, equipment manuals, product quality certification and product performance test report documents, imported equipment should also have the certificate of inspection qualified. 6.3.2 equipment should be checked out of the box before installation, and a written record of acceptance shall be formed. Participants are representatives of such units as construction, supervision, construction and manufacturers. 6.3.3 equipment should be checked and accepted before it is put in place. It can be installed after qualified. 6.3.4 equipment handling and lifting must comply with the relevant provisions of the product manual, and should do a good job of equipment protection, to prevent damage caused by handling or lifting equipment.