Multistage pump knowledge analysis

Multistage pump knowledge analysis
At present, sales of centrifugal pump in the market has a lot of kinds, according to the use of the environment and the capacity and head two parameters of different can be divided into a lot of kinds of centrifugal pump, such as the multistage centrifugal pump, double suction centrifugal pump, pipeline centrifugal pump, ISG type single-stage single suction centrifugal pump, etc all kinds of different types of centrifugal pump, and multistage centrifugal pump is one of the many types of centrifugal pump china-africa common.
Multistage pump is simple a lot of single pump series, together.His output pressure can be very big.Is one of the types of centrifugal pump, but also rely on the rotation of the impeller in the centrifugal force, and material.For gas density to achieve the mechanical vacuum pump was out working range, and thus gradually obtain high vacuum.Multistage pump is accomplished by the change of pump cavity volume of suction, compression and exhaust, so it can be variable volume of centrifugal pump.
The basic construction of multistage pump is composed of six parts, respectively, impeller, pump body, pump shaft, bearing, seal ring, stuffing box.
1, the impeller is the core part of the multistage pump, its speed is higher than strength, on the impeller blades and play a major role, the impeller through static balancing experiments before assembly.Impeller on the inside and outside for smooth surface to reduce friction loss of water.
2, the pump body also calls the pump shell, it is the body of the multistage pump.Support fixed effect, and connected to install bearing bracket.
3, the role of pump shaft is connected by coupling and motor, the torque of the motor to the impeller, so it is a major part of the mechanical energy transfer.
4, bearing is set on the pump shaft support components of pump shaft, which has two kinds of rolling bearing and sliding bearing.Rolling bearing use butter as a lubricant oil is generally appropriate for two-thirds to three-quarters of the volume too much will be fever, too little and there was a noise and fever!Sliding bearing is using a transparent oil as lubricant, go to the oil level line.Too much oil leak to the pump shaft and floating base, too little bearing overheating and burn out cause an accident!Bearing has the highest temperature in the process of pump working in 85 degrees generally run around 60 degrees, if the high will find reason (if there are impurities, oil is black, whether water) and processed in a timely manner!
5, sealing ring, also known as minus leakage ring.Import and pump impeller shell gap between in the cause of high water in the pump by means of this clearance flow to the low pressure area, affect the water yield of pump, efficiency!Clearance starts to cause the impeller and pump casing friction wear.In order to increase the flow resistance reducing internal leakage and delay the service life of the impeller and the pump shell, the pump casing and impeller around the foreign aid junction with sealing ring, sealing gap in between 0.25 ~ 1.10 mm is advisable.
6, stuffing box is mainly composed of filler, seal ring, packing, packing gland, water tubes.The role of the stuffing box is mainly in order to close the gap between pump casing and pump shaft, don’t let the flow within the pump does not flow outside to not let outside air into the pump.Always keeping the vacuum inside the pump!When the pump shaft and be about to rely on water seal packing friction heat to hold water to the water seal circle packing cooling!Keep the pump running.So in the process of pump run Tours of inspection to check the stuffing box is paying special attention to!Running about 600 hours will be carried out on the packing replacement.

Chlorophyll, CHLK light stainless steel multistage pumps and CHLF (T) light come pump industry design and manufacture of horizontal multi-stage centrifugal pump is a multistage pump products, adopted the advanced standing mechanical seal, pump body of the flow components adopt stainless steel material (304 or 316), which can therefore be light corrosion erosion resistance, and good appearance, in addition to these characteristics, chlorophyll, CHLK light stainless steel multistage pump small size, light weight placed mobile and convenient, with low noise and long service life.

Light multistage pump working conditions is as follows:
1. Thin, clean, coagulation, explosion, liquid without solid particles or fibers.
Type 2. Liquid temperature: room temperature 15 ℃ to + 70 ℃ hot water operated + 70 ℃ to + 110 ℃
3. The biggest environmental temperature: + 40 ℃
4. The maximum operating pressure: 10 largest import pressure being limited by the maximum operating pressure
5. Acid and alkaline medium: PH4 ~ 9 motor: the motor is totally enclosed, air-cooled two pole machine
6. Protection grade: IP55
7. Insulation class: F
8. Standard voltage, frequency 50 hz, 220-240 – v 3 x 220 240-415 – v – 240 – v

Chlorophyll, CHLK light stainless steel multistage pumps and CHLF (T) light horizontal multi-stage centrifugal pump is mainly used for family central air conditioning circulation and industrial liquid transmission.Such as mineral water, soft water, purification system, such as light oil circulation and pressurization.The concrete can be used in the following scenario:
1. The small central air condition
2. The cooling system
3. Industrial cleaning
Water treatment (water purification) 4.
5. Aquaculture
6. Fertilization/measurement system
7. Application environment