High viscosity pump selection of the need to pay attention to some of the issues, how to choose the right high viscosity pump to be more suitable for their own conditions to use, should be considered in many ways. First, the viscosity of the medium fed by the high-viscosity pump must be taken into consideration in order to determine the speed range of the high-viscosity pump. The high-viscosity pump's normal flow range depends on the speed range of the high-viscosity pump and the required operating conditions Viscosity pump specific models. It should be noted that the general medium can be chosen in this way. Among them, some special chemical medium will change its chemical composition at a certain temperature, so you need to select the high-viscosity pump to pay special attention to the pump speed is appropriate, because the pump speed is higher, the greater the heat generated during normal work, once Exceeds the temperature limit of the medium, then more media damage caused. There are also food-stuffs such as jam, like our daily jam, peanut butter, bean paste, etc., which require that the medium must not be destroyed during transport to destroy the contents of the interior, Pump speed must be low, in order to ensure that high-viscosity pump in the transport process does not undermine the delivery of media. Second, the level of medium viscosity and high viscosity pump speed are inextricably linked. If high viscosity pump medium viscosity is too high, but with the speed is too high, it will cause the pump flow is very low, the pump noise. If the motor power or according to the conventional match, then the motor can cause overload. Mainly the pump speed is too high, medium viscosity is too high, which will cause a great pump resistance, the motor instantaneous starting current exceeds the rated current, resulting in motor overload; due to high speed, high viscosity pump in operation, the internal rotor almost Only the formation of idling, slipping around the media transported, resulting in suction on the material, or the flow is small. In this situation, you must reduce the pump speed, increase the motor power, increase the diameter of the import and export to reduce the flow resistance of the medium. In order to complete the delivery of media. After the speed is reduced, the pump will increase the flow, but the pump noise will be reduced, but certainly can not hit the theoretical flow. So if the actual working conditions require a lot of difference between the flow, then it can only better model a larger pump. Third, we have a lot of sales staff will encounter such a situation: the high viscosity pump selected in advance by the theory can not be used to the scene, or the actual flow and the theoretical flow is much different. Especially in some high viscosity delivery occasions. The main reason is that the true viscosity of the medium under different conditions is not really known and the customer usually gives only the viscosity of the medium under the specified condition. However, the actual working conditions are not under the conditions specified by the customer, resulting in the pump Small selection, the flow is not enough, or not on the material. Therefore, the choice of high-viscosity pump to customers must be asked in detail about the pump at the customer site should be specific how to install the specific process, and the process of some specific conditions, including medium viscosity, medium temperature, pipe diameter, pipe length, pipe Road elbow and so on. Fourth, the high-viscosity pump often stuck stuck in the operation process, hold the shaft can not move the phenomenon, mainly due to the high viscosity of the pump are often transported high viscosity medium, some are mixed physical impurities. If the pump inlet without a suitable filter installed, then once the larger hard particles into the pump cavity will be high viscosity pump stuck inside and outside the rotor, the pump does not move, the serious will be high viscosity pump internal and external rotor Ruined Therefore, we recommend that you install a high viscosity pump should choose the right filter to install the pump inlet. The phenomenon of high viscosity pump shaft is mainly reflected in the stainless steel high viscosity pump more, because the stainless steel carbon content is low, so the thermal expansion coefficient, once the pump temperature is too high, it will cause the pump between the internal parts and accessories Gap narrowing, to a certain extent, will produce lock-lock phenomenon. Therefore, the choice of high-viscosity stainless steel pump is sure to indicate the specific use of temperature, and medium lubrication. Fifth, another problem that high-viscosity pumps are prone to is that the pins of driven gears are subject to wear and tear, especially when transporting non-lubricated media. In this regard, my company to improve the processing technology on the basis of the original through the special design to improve the pin shaft supporting a set of oil lubrication system. In the normal operation of high-viscosity pump through the inner rotor of the centrifugal force generated by the negative pressure, the use of oil injection system through a special channel to the pin oil, thus solving the high viscosity of the pump shaft wear fast in the pump industry exists The problem Sixth, on the high viscosity pump leakage problem. In particular, high-viscosity pump in the delivery of non-lubricating high-viscosity materials, the seal will have a short service life. After my company's technical department of high viscosity pump processing technology to solve this problem. The first is to increase the sealing device, the combination of sealed form; the second is to change the internal structure of high-viscosity pump, pump seal chamber parts with low-pressure chamber parts, the pump is not subject to high-pressure impact within the pump to completely solve the over the years Has been troubled by another problem of high viscosity pump industry.
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