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lay1014

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  1. Liquid ring vacuum pump wiring method The liquid ring vacuum pump has certain requirements when it is used. If it is chosen according to its performance, it needs a certain knowledge base. Then there are many people applying it. I believe many people will also use it. The wiring method has a certain understanding, then let's come together and consolidate it. 1. When wrapping with polyester insulation tape, be sure to press half of the first ring, dress 8-12 layers, wrap the liquid ring vacuum pump, and then use plastic tape to wrap two layers for strength. 2. Strip the copper core of the liquid ring vacuum pump about 30-35mm long. Wipe the copper wire with an abrasive cloth and make it bright. Also peel off the copper wire of the external three-core cable and peel it out 30-35mm. clean. 3. Insert the three-core cable and the copper wire stripped from the external cable, and then tie it tightly with a thin copper wire as shown in the figure. Cut the rest and cut it with scissors to prevent it from getting tied. 4. The three wire ends are respectively welded with solder, and the surface of the welding head is required to be smooth, without burr and false welding. If it is not welded or not smooth, the liquid ring vacuum pump should be re-welded until the requirements are met. 5. Wrap the three heel wires together with plastic tape and wrap the two layers. The first layer is more than 50mm above the end of each wire insulation layer, and the second layer is 50mm beyond the end of the first layer. 6. After the banding, take a basin of cold water and immerse the wrapped wire in the water safely. After 12 hours, the insulation should not be less than 50 megohms with a 500V megger. Otherwise, it should be re-wrapped until it meets the requirements. 7. The grounding wire of the liquid ring vacuum pump must also be bandaged according to the diving cable wiring process requirements. The liquid ring vacuum pump must pay attention to its method and method when wiring. It is hoped that everyone must analyze it according to its specific content when processing. Therefore, you need to pay special attention to some small details when processing, so as to avoid unnecessary failure. Liquid Ring Vacuum Pump Dry screw vacuum pump Dry scroll vacuum pump 2bv vacuum pump
  2. Influence of high water temperature on vacuum pump Too high water temperature will inevitably make water vaporization and evaporation, and the negative pressure working conditions will further aggravate the evaporation and evaporation, so that the vacuum pump body produces too much water vapor. In this way, really Empty pump in the inhalation inhalation is too much water vapor, and rarely outside inhalation, resulting in a very low vacuum system. There are two main factors contributing to the excessive water temperature Through high; The second is the temperature rise of the water during the working process. To prevent excessive water temperature, the following must be done: (1) reduce the water temperature; (2) to maintain the flow of water in and out of the channel, especially the outlet channel (pump body bottom two drainage holes) must always ensure the smooth, can not blindly plug or reduce the flow area; (3) from the process of adjustment, as far as possible to reduce the main machine working material temperature, in order to reduce the vacuum pump suction temperature. Water ring vacuum pump Liquid Ring Vacuum Pump Rotary Vane Vacuum Pump 2bv vacuum pump
  3. Inspection methods of hidden safety hazards of water ring vacuum pump In daily use, it is important for product quality. Water ring vacuum pump must be shut down in a planned way. After that, we should also pay attention to the following circumstances in accordance with the management regulations, when the pump shutdown is required, the person in charge of the pump shutdown unit must pay attention to four hours in advance for the relevant shutdown approval procedures; point of view, when the power department at a higher level, the company or the line maintenance failure needs to shut down. In addition, when the line in the mine fails, it will be shut down due to maintenance; when the water ring vacuum pump fails or needs to be shut down due to regular switching; when the circulating pool needs to replace the water source; when the welding of nearby drainage pipeline and the replacement and installation of other ancillary devices; for this reason, the vacuum pump needs to be shut down because of other reasons. When special circumstances or reasons require outage. Afterwards, we must also pay attention to the important achievements of economic and social development in terms of security development, that is, to enable the people to enjoy the economic development and social development safely and happily. It is precisely because of this, in the ordinary use of water ring vacuum pump, our ultimate goal is to pay attention to should be to minimize safety incidents, but also should pay attention to reduce personal and property losses. Next, the water ring vacuum pump unit is mainly used for rough vacuum. In the process of large air extraction. It is also used to extract air and other non-corrosive gases, which do not dissolve in water and contain a small amount of solid particles, in order to form a vacuum in a sealed container. The water ring vacuum pump unit overcomes the characteristics of the limit pressure difference of a single water ring pump when it is used, and at the same time, it also serves the shortcomings of low pumping rate at a certain pressure. At the same time, it can keep the water ring vacuum pump unit working rapidly, which means that it has the advantage of relatively large pumping rate; when equipped with explosion-proof, it has the advantage of high pumping rate. When motor and electrical appliances are in compliance with the corresponding safety rules, the water ring vacuum pump unit can also extract flammable and explosive gases. Liquid Ring Vacuum Pump Rotary Vane Vacuum Pump Dry screw vacuum pump
  4. Rules for operation of Roots vane vacuum pump unit Rules for operation of general wet Roots vane vacuum pump units General Roots vacuum unit operation in accordance with the relevant rules of dry Roots vacuum pump, but also need to pay attention to the following related matters; 1) Pump should be run empty before use to check whether the rotating parts are flexible, whether there is blocking phenomenon, whether the rotation direction is correct, whether there are abnormal noise and vibration in the pump. Before starting, pull the pulley by hand, check whether there is any obstacle, and inject proper amount of clean water, and inject the prescribed grease into the gear box. Connect to the power supply, click a few times first, observe whether the situation is normal, and then measure the current after starting. If it is found that there is no indication on the vacuum gauge or the reading is very small, it is necessary to check whether the valves on the gas-water separator are sealed, whether the valves on the suction pipeline and the closure doors on the suction tank are sealed, and whether the flanges, joints and pump shells on the pipeline are leaking, and to eliminate them after finding out the causes. 2) Before starting the pump, the valve on the suction pipe should be opened and other valves should be closed. 3) The shutdown operation should follow the following procedures. Press stop press and turn off the power supply; (2) Vacuum sealed cooling water and re-tighten the water plug (temporary parking can not be emptied); (3) Temporary shutdown, although not water, should be put into the air to destroy the vacuum condition in the pump, so that the next start-up is easy. 4) Notes for operation and use. (1) Pumping should be started before the vacuum equipment is pumped; (2) Pump shutdown should be after braking the vacuum pumped equipment; (3) Water injection and exhaust should be done before starting the pump. (4) Controlling the vacuum degree of the pump can adjust the valve on the inlet pipeline and adjust the closure door of the outlet of each suction tank when changing the vacuum degree of each suction tank. _When the vacuum is too high, appropriate amount of air can be put into the water injection valve on the inlet pipe. _When choosing a pump, attention should be paid to the balance between the external load and the pump's capacity. If the pumping speed of the vacuum equipment is greater than that of the pump, the pump's capacity is insufficient, and the vacuum degree is greatly reduced, which can not meet the proper use requirements. At this time, several pumps can be considered in parallel. When the load of the external equipment is not much larger than the capacity of the pump, the speed of the pump can be increased, the speed of the pump can be increased, the pumping speed should be increased, and the power should also be increased, but the increase of the speed should not exceed 25% of the rated speed. _After using for a period of time, the side plate of the stabilizer box and the lower drain bolt should be removed, the rotor rotated, the dirt washed out with water, and then assembled for reuse. Basic Principle of Roots Vacuum Pump with Direct Exhaust Atmosphere Roots pump uses internal cooling method, heat is directly taken away by circulating cooling air from the heat source, that is, the exhausted gas, when it is compressed or discharged, it is cooled by cooling air, so this kind of pump can be used where the standard pump can not work. The pump chamber can be cooled by itself, because the impeller and the working chamber have a special working part. When this special part is working, a part of the working chamber is closed, blocking the inlet and outlet. Through the special ventilation port, the cooling gas flows out from the pressure side, or enters the working chamber again, and then from the outlet side by the pressurized cooling. But when the gas is filled, the gas is circulated. Roots pump with internal cooling in gas cycle is controlled by a special impeller head without additional control elements. Therefore, the structure of this kind of Roots pump with internal cooling is simple and clean as that of ordinary Roots pump. It connects the cooler with the exhaust port, and the cooler is installed outside the pump housing for easy maintenance and replacement. If the cooler is designed correctly and the pipe size for conveying cooling gas is large enough, the cooling effect is very good, so that Roots pump can work under various pressure differential conditions. Pump heating depends not only on speed and circulating cooling dose, but also on pressure difference, which is proportional to speed. In addition, the clearance between the blade and the pump housing should be kept at a minimum. This is conducive to the improvement of volumetric efficiency in order to obtain a higher vacuum. Gas cycle cooling Roots pumps are most suitable for those processes that discharge and compress gases or vapors. These exhausted or compressed gases should not be in contact with oil or harmful liquids before entering the pumps, such as nitrogen cycle in cryostat. If the pressure difference between intake and exhaust is very large and the required limit vacuum is very high, three Roots pumps can be considered in series. In addition, there are also water cooling or multi-stage pumps. Oil-free vacuum pump for freeze dryer Degassing vacuum pump
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