Select high-viscosity pump should pay attention to the matters needing attention 1 must consider the viscosity of the medium delivered by the high-viscosity pump, in order to confirm the high-viscosity pump speed range, according to the high-viscosity pump speed range and the required conditions of high viscosity pump Normal flow range, be sure to type high viscosity pump details. Need to pay attention to is that ordinary media can choose. Among them, some special chemical medium will change its chemical composition at a certain temperature, so the demand in the choice of 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, As soon as the temperature of the medium has been exceeded, more media will be destroyed. There are also some food mediums, such as jams, such as our daily consumption of jam, peanut butter, bean paste, etc., these media requested during the delivery process must not destroy the internal components to stop the destruction, which asked us to choose The pump speed must be low, in order to ensure that the high-viscosity pump does not destroy the delivered medium during the delivery process. Media viscosity up and down with high viscosity pump speed is inextricably linked. If the high viscosity pump to ensure the media stick too high, but with the speed is too high, it will form a very low pump flow, pump noise. If the motor power or according to the conventional, then the motor will be overloaded. Mainly the pump speed is too high, medium viscosity is too high, which will form a great pump resistance, the motor instantaneous starting current exceeds the rated current, the formation of motor overload; due to high speed, high viscosity pump in operation, the internal rotor simply Only constitutes a freewheeling, coiled by the media sent slippery, the formation of suction material, or the flow is small. In this case, it is necessary to reduce the pump speed, increase the motor power, increase the diameter of the import and export to reduce the resistance of the medium activity. In order to complete the delivery of media work. 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 difference with the actual conditions of demand traffic, then it can only better model a larger pump. 3. A lot of sales staff will encounter some such conditions: According to the theory in advance selected high-viscosity pump to the scene can not be used, or the actual flow and the theoretical flow is too much difference. Especially in some places to send high viscosity. The main reason is: do not really understand the true viscosity of the medium under different conditions, often customers only given the medium under the specified conditions of viscosity, and the working conditions are not in the customer specified conditions, the formation of the pump Small selection, the flow is not enough, or not on the material. Therefore, when choosing a high-viscosity pump for the customer, it is necessary to carefully examine the detailed process of how the pump should be detailed on the customer's site and some detailed conditions in the process, including medium viscosity, medium temperature, pipe diameter, pipe length, pipe Road bend number and so on. 4. High-viscosity pump often appear stuck in the operation process, hold the shaft can not move the phenomenon, the main reason is that high-viscosity pumps are often delivered high viscosity medium, some are mixed physical impurities. If the pump inlet is not equipped with the appropriate filter, 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 inside and outside the rotor Ruined Therefore, we suggest that when installing high-viscosity pump should choose the appropriate filter to install the pump inlet. The phenomenon of high viscosity pump shaft is mainly manifested in the stainless steel high viscosity pump more, due to the low carbon content of stainless steel, so the thermal contraction coefficient, once the pump temperature is too high, it will form the internal pump parts and accessories The gap between the reduced to a certain level after the lock will have the phenomenon. Therefore, the choice of high-viscosity stainless steel pump is a must specify the detailed use of temperature, and the smoothness of the medium. 5. Another problem that high-viscosity pumps are prone to presents is that the pins of driven gears are subject to wear and tear, especially when it comes to smoothing non-smooth media. In this regard, my company to improve the processing technology in the original foundation of the special design improvements to the pin shaft supporting plus a set of oil smoothing system. In the normal operation of high-viscosity pump through the inner rotor rotation generated by the centripetal negative pressure, the application of the oil system through a special channel to the pin oil, which deal with the high viscosity of the pump shaft wear fast in the pump industry there The problem About the leakage of high viscosity pump. In particular, high-viscosity pump in the delivery of non-slip high-viscosity materials, the seal will have a short service life. After my company's technical department of high viscosity pump processing technology to deal with this problem. The first is to increase the seal installation, the use of combination of sealing; the second is to change the internal structure of high viscosity pump, pump seal chamber parts with low pressure chamber parts, seals from the pump internal high pressure impact, which thoroughly deal with over the years Continue to disturb the high viscosity of the pump industry another problem.
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