Content: Centrifugal pump overcurrent components have a suction chamber, impeller and pressurized water chamber. The water suction chamber is located in front of the water inlet of the impeller and functions as a guide for the liquid to the impeller. The water pressure chamber mainly has three forms of a spiral water pressure chamber (volute type), guide vanes and space guide vanes. The impeller is the most The important working element is the heart of the overcurrent part, which consists of the cover and the middle leaf.
　　
Centrifugal pump vertical, horizontal, single-stage, multi-stage, single suction, double suction, self-suction and other forms. Its main working principle is: Centrifugal is the manifestation of the inertia of the object.
　　
For example, drops of water on an umbrella, when the umbrella slowly turns, the drops of water will follow the umbrella. This is because the friction between the umbrella and the drops of water acts as a centripetal force to the drops of water. However, if the umbrella rotates faster, the friction is not enough to make the water drop circular motion, then the water droplets will move away from the umbrella to the outer edge. It's like using a rope to pull a stone in circular motion. If it's too fast, the rope will break and the rock will fly out. This is the so-called centrifugal centrifugal pump is designed according to this principle.
　　
1, water storage method with a large bucket or water tank filled with water, put it in the vicinity of the pump and the bottom of the barrel slightly higher than the water outlet; or near the pump house to build a pool, Slightly lower the bottom of the pool to form a reservoir. Connect the bucket (or tank) to the pump body watering hole with a hose. Downtime, the use of water out of the water bucket filled with spare, the next start, they can self-flowing water. This method of filling water, easy to use.
　　
2, self-priming centrifugal pump This pump is our country in recent years, design, manufacture, promote the use of a new type of agricultural pumps. It does not end the valve, before starting, pouring a small amount of water into the pump, start, you can automatically vacuum water. After shutdown, the next restart, you do not need to be irrigated. So easy to use. In recent years, our province developed SS-type self-priming centrifugal pumps, specifications 2,3,4? Trace feces too Quan ah? ⑴ ┨ actinium Wo Rong? 谩 A 硗 猓 Shuo ⒄ ancient 绻 嗉 酰 acyl? Night? Aphid? Cerambang skimming Pie glance Juan? Only 淖 竦 竦 淖 halo? Chirp Meng Pirates of the threat U Um straight tube narrowly call 鲇 fans 谂 ┮ stare hope 诮 诮?谩? / Span>
　　
3. Before the pump water tank water diversion method in front of the pump to install a cylindrical tank, the top of the hemisphere-shaped projection, the middle of the cabinet section of the suction tube, the nozzle is lower than the height of the barrel body outlet and the lower part of the pump Suction hose connection. Before using the water tank for the first time, fill the water tank with water from the water inlet and then close the water inlet. Start the pump running, the water pump will instantly pump the water tank away, the water level gradually decreased, the volume gradually increased to form a vacuum state, resulting in suction, which sucked the water sucked to the tank, the pump continues to run, water on A steady stream of pumping out.
　　
4, the use of the exhaust pump vacuum exhaust method to remove the muffler of a small engine, fitted with a special exhaust gas intake device, the use of engine exhaust emissions during the work, the pump out of the air, the pump to produce a certain degree of vacuum . In operation, the engine is started first, then the handle of the exhaust water inflow device is pressed downward to close the exhaust outlet, the exhaust gas discharged from the engine is discharged through the exhaust nozzle, and as the exhaust gas jet speed is high and the pressure is low, . When you see a continuous flow of gas and water bubbles appear, the pump began to absorb water. Then close the pump body water-filled vent, then lift the handle, open the exhaust outlet, the pump is transferred to normal work. This method of filling water, only for small gasoline or diesel engine powered small-bore water pump.For HITACHI Cylinder Seal Kit
Daily maintenance of excavator hydraulic cylinders
The hydraulic cylinder of an excavator is one of the important hydraulic components responsible for driving and controlling mechanical movements. In order to ensure the normal use of hydraulic cylinders and extend their service life, daily maintenance is necessary.
1. Regularly clean the hydraulic cylinder: During use, the hydraulic cylinder will be attacked by various pollutants, such as dust, sediment, oil stains, etc. These pollutants can affect the working efficiency and lifespan of the hydraulic cylinder. Therefore, it is necessary to regularly clean the hydraulic cylinder.
2. Regular inspection of seals: The seals of hydraulic cylinders are key components to ensure their normal operation. If the seals are damaged or worn, it can lead to oil leakage or unstable operation of the hydraulic cylinder. Therefore, it is necessary to regularly inspect the sealing components of the hydraulic cylinder and replace them in a timely manner if there is any damage or wear.
3. Regular inspection of hydraulic oil: The operation of hydraulic cylinders requires the support of hydraulic oil, so the quality of hydraulic oil has an important impact on the working effect of hydraulic cylinders. Regularly check the quality of hydraulic oil, and replace it promptly if there is contamination or deterioration.
4. Regularly check the hydraulic pipeline: The hydraulic pipeline is the blood vessel of the hydraulic cylinder. If there is oil leakage or damage to the pipeline, it can cause the hydraulic cylinder to not work properly. Therefore, it is necessary to regularly inspect the hydraulic pipelines and promptly repair or replace them if there is any oil leakage or damage.
5. Regularly lubricate the hydraulic cylinder: The piston rod and piston ring of the hydraulic cylinder need to be lubricated to reduce wear and friction. Therefore, it is necessary to regularly apply lubricating oil to ensure the normal operation of the hydraulic cylinder.
In short, the daily maintenance of excavator hydraulic cylinders is very important, which can extend their service life and improve work efficiency. Regular cleaning of hydraulic cylinders, inspection of seals, hydraulic oil, hydraulic pipelines, and lubrication of hydraulic cylinders are required.
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