Submersible pump is an important equipment for deep well water supply, because our country is a water-scarce country, and thus national industrial policy support wells with submersible pump industry development, which also provides a policy environment for the development of the submersible pump industry, Better promote the submersible pump industry. In this environment, which also put forward higher requirements for submersible pump installation, submersible pump installation should pay attention to those issues Submersible pump installation should pay attention to those matters 1). The submersible pump is not allowed to install the direct Place it at the inlet of sewage and determine the minimum height of the submersible pump from the bottom according to the site conditions so as to prevent it being buried by mud or the blockage of suspended matter at the inlet of the pump. As a result, the heat transfer rate is reduced, the motor winding temperature is increased, the insulation is aged and the stator is shortened Life or cause an accidental trip, or even burn the motor. 2) Never put the submersible pump directly on the mud or floating mud, if it is necessary to temporarily install, it is recommended to place the pump on a large floor or a solid ground to avoid sagging caused by vibration. 3). Due to different uses within the control cabinet HH54P type small relay may drop during transport, when re-plug the coil rated voltage to distinguish: a control two power control cabinet KA7 relay, a control two power control cabinet KA9 relay coil voltage is 220V, the rest are 36V, pull out when not to make mistakes; 4). A control of more than two control cabinet, because there are several submersible pumps, wiring, respectively, when the power line and control line do Mixed, leakage protection and overheating protection can not be reversed or cross. 5) The level of liquid level control Floating level to distinguish between high and low, do not engage in anti-, and the other should pay attention to the location and weight of the hammer to be correct. After "automatic operation" setting, it can not work normally, most of them are mistakes or chaos of liquid float. (Some customer service personnel will mistake the positioning hammer into the cable float at the root of the liquid level float, the liquid level float is crushed by the heavy hammer and can not float or hang down with the change of water level, so "automatic operation" will fail ; There is also a situation to note that the liquid float in the overall positioning of the suction pool to be reasonable, there are often such examples that set the "automatic operation", the submersible pump often alarm or even burn, check the analysis, the pump is Normal, nor leaked.And then from the entire pumping station control system, only to find the liquid float in the overall positioning of the suction problem, actually did not take into account the low water level to stop the pump set, making the pump in the water is not Always run, and eventually burn the pump mechanical seal and the motor .This all the attention!) 6) .After the installation is complete, until the submersible pump all immersed in water, before the power supply with 500 V megger to check the motor three relatively insulated Resistance, the minimum not less than 10 megohms. 7). Timely clean up the trash in the sump to prevent clogging of the runner or smashing the impeller such as stones. Industrial Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Daohui (QQ / WeChat:) http://beng.liuti.cn/ (Service Hotline:)
Hydroxypropyl Methylcellulose Methoxyl content: With the reduction of methoxyl content, gel point raise up, water solubility reduce, surface activity decrease.
hydroxypropyl methylcellulose Methoxyl is White or similar to white powder, odorless No heat, chemical inertness, and not participate in the metabolism of human body.
hydroxypropyl methylcellulose Methoxyl HPMC used in Construction:
- Used as the water retaining agent and retarder in mortar to make it has good pumpability.
- Used as adhesives in plaster, gypsum material, putty powder or other construction materials to improve its workability and extend the operation time.
- Used as paste enhancer of ceramic tile, marble and plastic decoration and reduce usage of cement.
- HPMC water retention property can prohibit too fast dry and cracking after the slurry spraying and enhanced strength after hardening.
The molecular formula of hydroxypropyl methylcellulose is shown below
100000 Viscosity Hydroxypropyl Methylcellulose
Hydroxypropyl Methylcellulose Hpmc,100000 Viscosity Hydroxypropyl Methylcellulose,100000 Viscosity Hydroxypropyl Methylcellulose Hpmc,High Viscosity Hydroxypropyl Methylcellulose
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