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Dongying PLC control cabinet Lirui electric satisfaction strength

Dongying PLC control cabinet Lirui electric satisfaction strength

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designers should cooperate with the construction in a planned way. For general design projects, they should assign main designers to the construction site to explain the design drawings, explain the design principles, design standards and basis of the project purpose, and put forward special requirements and construction precautions of new technology; For Gongda or new technology projects, if necessary, on-site design representatives should be sent to solve the design problems existing in the construction at any time. ④ completion acceptance is a comprehensive inspection of the design and construction quality. Relevant competent departments and associations can lead industry leading enterprises to formulate relevant standards; At the same time, it is also hoped that experts and academic leaders in the industry will actively promote Cheng, whose core is quality *, and unqualified projects must be reworked or reinforced. The third stage is the project acceptance stage, which takes longer than the time for wood to maintain its color, including the process of joint commissioning, commissioning and acceptance. There are 24 Categories of joint commissioning, a total of 305 items are selected, and the construction unit, the equipment supplier and the construction unit jointly complete the inspection of equipment and its installation, The purpose of trial operation is to ensure that the treatment system reaches the designed treatment scale and treatment effect

and determine the operating conditions of * for the biological treatment system, it often takes a long time to complete the task of "cultivating bacteria". The environmental protection department checks whether the effluent from the treatment system meets the discharge standard. Precautions for the use of non clogged submersible sewage pumps. Sewage pumps are a kind of centrifugal impurities, which have many forms: such as submersible and dry-type. At present, the commonly used submersible sewage pumps are WQ submersible sewage pumps, which are mainly used to transport urban sewage, For the medium containing solid particles such as fiber paper scraps in feces or liquid, the temperature of the transmitted medium is usually no more than ℃. Because the transmitted medium contains fibers that are easy to be twisted or bunched, the flow channel of this kind of pump is easy to be blocked. Once the pump is blocked, the pump will not work normally or even burn the motor, resulting in poor sewage discharge and serious impact on urban life and environmental protection. Precautions for the use of sewage pump

check whether the sewage pump pipeline and the joint are loose, turn the sewage pump by hand, and try to see whether the sewage pump can flexibly add bearing lubricating oil into the bearing body. Observe that the oil level should be at the center line of the oil standard. The lubricating oil should be replaced or supplemented in time. Unscrew the water diversion plug of the sewage pump body, pour water (or slurry), close the gate valve of the water outlet pipeline, the outlet pressure gauge and the inlet vacuum gauge, and jog the motor to see whether the motor turns correctly, Start the motor. When the sewage pump operates normally, open the outlet pressure gauge and the inlet vacuum pump, and gradually open the gate valve of Binzhou weak current integrated control system after it shows appropriate pressure

at the same time, check the motor load, and try to control the flow and head of the sewage pump within the range indicated on the label, so as to ensure that the sewage pump operates at the * efficiency point, and the Dongying PLC control cabinet can obtain the energy-saving effect of *. During the operation of the sewage pump, the bearing temperature must not exceed the ambient temperature ℃ * the temperature must not exceed ℃. If the sewage pump is found to have abnormal sound, stop immediately to check the cause, and close the gate valve pressure gauge when the sewage pump is stopped, Then stop the motor, change the lubricating oil after hours within * months of operation of the sewage pump, and then change the oil every hour. Adjust the packing gland frequently to ensure that the leakage in the packing room is normal (it is appropriate to leak in drops)

regularly check the wear of the shaft sleeve, and replace it in time after the wear is large. After the sewage pump is stopped in the cold winter season, it is necessary to unscrew the drain plug at the lower part of the pump body to drain the media to prevent frost cracking. A submersible sewage pump adopts an automatic liquid level control device for automatic control. The types of automatic liquid level control devices in the United States, Europe and Japan have their own plastic use standards, except for the floating ball liquid level switch, If the sewage does not contain or only contains a small amount of suspended impurities, input pressure sensors and supporting secondary instruments can also be selected. The automatic liquid level control device installed in the sewage pool (sump) should be as far away from the water inlet as possible. Hooks should be embedded on the floor or beam above the manhole of the indoor sewage pool (sump) with a single submersible sewage pump weight greater than kg for lifting the submersible sewage pump during installation and maintenance. According to the provisions of the current relevant specifications, In addition to the fabric reinforced rubber hose used for the hose connection part of the mobile antai'an weak current integrated control system, the discharge pipe of the submersible sewage pump can be made of hard water supply plastic pipe, centrifugal casting ductile iron water supply pipe, steel pipe, steel plastic composite pipe, etc

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