According to the gear pump selection principle and selection of basic conditions, the specific operation is as follows: 1, according to the layout of the device, topography, water conditions, operating conditions, to determine the choice of horizontal, vertical and other types (pipe, submersible, The following formula, non-clogging, self-priming, gear, etc.) pump. 2, according to the nature of the liquid medium to determine the water pump, hot water pump or pump, chemical pump or corrosion-resistant pump or impurity pump, or non-clogging pump. Pumps installed in the explosive area should be based on the explosion area level, using the appropriate explosion-proof motor. 3, according to the size of the flow, to determine the menu suction pump or double suction pump; according to the level of the head, single-stage pump or multi-stage pump, high speed pump or low speed pump (air conditioning pump) Single-stage pump and multi-stage pump can also be used when the first choice of single-stage pump. 4, to determine the specific model of the pump to determine the choice of what series of pumps, you can press the maximum flow, (in the absence of the maximum flow, it is usually desirable to 1.1 times the normal flow as the maximum flow), take to enlarge 5% -10% margin After the lift of the two main parameters of performance, in the spectrum or series of characteristic curve to determine the specific model. The operation is as follows: Use the pump characteristic curve, find the required flow value on the abscissa, find the required lift value on the ordinate, from the two values ​​were drawn up and down, respectively, vertical or horizontal line, intersection of two lines just fall in the characteristic curve On the pump is to three years ago many of our slurry pump also uses horizontal centrifugal pump shown in Figure 1. The overcurrent member of the horizontal centrifugal pump is made of cast iron, and the sealing form is the packing seal. Production and operation of many problems: 1, horizontal centrifugal pump flow pieces (that is, wearing parts) has a very short service life. As the pressure filter post-press larger. At this point the pump pressure is too large, the flow of the pump to withstand the friction load, to speed up the wearing parts wear and tear, the general set of pump parts life of 35-45 hours. 2, serious leakage. The use of packing seal, coupled with the pump delivery of corrosive media, with the supply pressure increases, the sealing performance worse. Leakage caused by metal loss at the same time, although there is a recovery pump underground, but located in the corner of the operation is not convenient, as long as the worker's sense of responsibility is not strong, leaking ore (gold, copper is high) will lose the whole process affect the metal balance and the scene The civilized production. 3, frequent maintenance, maintenance and operation difficulties. The pump chamber is full of pulp, in the case of poor sealing, the slurry can easily enter the pump bearings, often to be dismantled pump body, downtime seriously affect the production. The traditional gear pump starch sewage treatment is usually the sewage directly into the filter press with a centrifugal pump, filtered starch solid waste air-dried packaged and shipped away. Such a process in the actual use of the process will generally encounter two problems.
Digital Conductivity Controller
Daruifuno's digital Conductivity Controller is specially designed for digital sensors, it can connect digital conductivity sensors to achieve richer display, control and output functions. The size of the digital instrument is 144*144*120mm, and there are various installation methods, such as wall hanging, pipe clamping and panel installation. The basic configuration is two SPST relays, two 4-20mA currents and one two-wire RS485 interface. The digital instrument also adds time and history functions, which can display time, record 10,000 historical data and the latest 100 maintenance records. The digital conductivity controller can automatically identify the connected digital conductivity electrode, and achieve the purpose of controlling the conductivity range of the solution through the relay. Our company has been specialized in water treatment application for more than 10 years. Our main products are online PH ORP Analyzer , Turbidity Analyzer, Dissolved Oxygen Analyzer, COD Analyzer and Ammonia Analyzer , etc..
Digital Conductivity Controller, Digital Conductivity Meter, digital conductivity analyzer
Suzhou Delfino Environmental Technology Co., Ltd. , https://www.daruifuno.com
