Weak current College products】 【mini pump selection and use of --- Power By】 【China power house network.

<br> In recent years, China's agricultural pumps of social ownership increased considerably, particularly with submersible pumps, self-priming, represented by small agricultural water pump, due to the low price, easy operation by the majority of users. However, due to .the small number of pump manufacturers, the technical force varies greatly, leading product quality and disparity. Plus operation, abuse, and other factors, to a large number of user-generated new troubles, even on present a lot of economic loss. According to .statistics, China's agricultural pumps every year production quantity of half used to replace the end-of-life products. Therefore, how to choose a single durable, roses and how to extend the pump water pump life becomes the majority of users are concerned about. .<br> <br> First, select the standard pump <br> <br> 1. What is the standardized pumps <br> <br> Standard water pump is national requirements under ISO, formulation, implementation of the latest model of pump. .Its main feature is the small size, light weight, performance tuning, easy operation, long life, low energy consumption. It represents the current pump industry's latest trends. <br> <br> 2, how to choose a water pump <br> .<br> When users select the pump, preferably to the agricultural machinery sector recognised point of sale, it is important to identify the manufacturer. Recommended priority purchase of inflated submersible electric pumps, and see the brand and product quality certification. Never buy "three ."(that is, no manufacturer, manufacture date, no production license) products, otherwise there is a problem, the user will be helpless. <br> <br> 3. what brand pump well <br> <br> As a user ., due to the limitations of knowledge, it is difficult to judge, the best way is to consult the pump side. If there is no one to go to the Advisory, may wish to consult the old pump users, especially those related to their conditions .of use, buy these user xiangjinzhe trustworthy, reliable and more mature product, is a wise choice. At the same time, according to the local power to decide the use-phase and single phase pump or pumps. <br> <br> 2 .. Select meet the requirements of the pump head <br> <br> Select 1, pump lift <br> <br> The so-called head refers to the head, and not lift height, with that in mind it is especially important for .selecting pump. Pump lift height for water pumping approximately 1.15 ~ 1.20 times. If a water source to the water Department of the vertical height of 20 meters, the lift of approximately 23 ~ 24 m. Select the pump should be water pump nameplate on the .best of the head and the head, such cases, the pump can be the most efficient, use will be more economic. But not necessarily require absolute equality, general deviation as long as no more than 20%, water pump are in more energy- .saving work. <br> <br> 2. how big is the nameplate head well <br> <br> Select the nameplate on head is far less than the required one pump head, often can not meet the user's wishes, even if they .'re able to smoke on the water, the water is very small, or even become a useless "free pump". Whether to buy, the higher the better pump lift? not necessarily. High-lift of pump for low lift, there will .be traffic and lead to motor overload, if long-running, the motor temperature rise, winding insulation will gradually aging and even burnt motor. <br> <br> 3. Select the appropriate flow pumps <br> <br> Water pump flow ., the water discharge, General should not be chosen too large, otherwise, would increase the cost of purchase of pumps. Should the specific analysis of specific issues, such as a user of their draught, flow self-priming pumps should be selected smaller; .such as a user of submersible pumps for irrigation, it may be appropriate to select some of the flow is large. <br> <br> IV. use of the <br> <br> Learn to use properly is to extend the water pump .life means, reduce economic losses. <br> <br> 1. for submersible pump <br> <br> Start the former should make the necessary checks: pump shaft rotation of normal, there is no card dead phenomenon; the location of the .impeller is healthy; cable and cable plugs with no break, abrasions and broken phenomena, etc. Running to observe the voltage changes, and normal control of the rated voltage within ± 5%. In addition, the water pump in water is important position, .should be selected in the water is abundant, no mud, water well, vertical suspension in water, does not allow the horizontal position, so as not to fall into mud or been suspended matter clogging water pump inlet, causing yield dropped even can't .on water. <br> <br> 2. for self-priming <br> <br> Should be placed in a better place to run in order to facilitate the rapid heat dissipation, reduced motor temperature. Otherwise, the long-run, .extremely easy to burn down the motor. As a farmer in using self-priming, because there is no coverage in the motor off the plastic film on which motor overheating, burned coil. Additionally, before starting, be sure to check the pump body of .water, otherwise, not only affects the suck performance by oneself, but also easy to burn down the shaft seal parts. Under normal circumstances, the pump starts after 3-5 minutes to the water, it should be immediately shut down. <br> .<br> 3. pump maintenance <br> <br> When the pump once has failed, don't remove it yourself. Because their removal is not knowing when a fault where the resulting blindly dismantle a pass; no special tools and often damaged .the already good parts. The best way is to have the experience, ¼ ó ¹ ì ¡ .and timely replacement of "overage" parts and wearing parts. Normally, the pump should repair every six months, ending with the "disease". <br> <br> 4, non-use period kept <br> <br> In the .non-use period, it is timely to pump water, lift-off side by side air pump water, especially during the cold winter months. And then place it on a dry place, so users can also be the focus of the water pump parts .painted butter in the bearing with grease to prevent corrosion of parts. In addition, the non-use period water pump, not longer, the better. If you do not use for a long time, not only easily corroded parts, also reduces the service .life of the pump. Map: submersible pump.