DL series vertical multi-stage sectional centrifugal pump
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 1000 unit/month
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Product outline
1.DL series pumps are vertical, single suction, multistage,sectional and centrifugal ones and used for transporting pure water and the liquids below 85 C and with the physical and chemical natures similar to water's.
2.Vertically mounted, of a compact structure, low noise, small occupied land etc, features and mainly used for the water supply and the centralized heat supply system in cities.
3.The technical standard executed for this series pumps is:
JB/TQ809-89(Vertical multistage pump model and basic parameters),GB5659-85(Technical conditions for multistage centrifugal pumps).
4.Rotating direction of pump:CCW as viewed downward from the motor.
Pump structure
1.Model DL pump is vertically type,its suction port is located on the inlet section(lower part of pump), discharge port on the output section(upper part of pump), both are horizontally
positioned. The number of stages can be increased or decreased per the required head.There are four installation angles of 0°,90° ,180° and 270° available for selecting per different installations and uses in order to adjust the mo unting position of the discharge port (installation angle is 180° if no special note is given).
2. Major parts of the pump: inlet, middle and outlet sections,impeller, guide vane, guide vane on outlet bearing,shaft sleeve, balance drum and sleeve, conn. stand etc.
2.1 The inlet, middle and outlet sections, guide vane, guide vane on outlet section are all made of castiron and mutually form the working room of the pump.
2.2 The impeller is made of cast-iron, Liquids go in from one side along with the shaft and an axial force may exist because unequal pressures on both front and back of the impeller.Most of the force is made balanced by the balance drum while its residual is supported by the ball bearing on the upper end of the shaft.
2.3 The shaft is made of qualified carbon steel and in its middle the impeller, balance drum and shaft sleeve are mounted,which are fixed with pins and shaft sleeve nuts on the shaft to form the rotor. On one end of the shaft a lower shaft sleeve is mounted, which is fitted with the plastic bearing, and on the other the ball bearing is mounted to support the rotor and on the top of it a clutch is mounted and directly connected to the motor.
2.4 Both balance drum and sleeve form the balance device of the pump and can be replaced when worn out.
2.5 The shaft seal can not only use soft filling but also be changed with mechanical seal, when using soft filling, the shaft sleeve can be replaced when worn out and, when as the mechanical seal, the pressure water inside of the balance room is used for lubrication and cooling.
When as the filling seal, the 3/8'' flexible union on the outlet section is used through the flexible pipe to drain the water leaked from the filling body to the underground ditch to keep the place around the pump clean.
2.6 The bearing on the upper end of the pump uses molybdenum disulfide grease for lubrication
- Q:Why can't the centrifugal pump pump the vacuum?
- Running process: depending on the centrifugal pressure of the liquid in the impeller, the liquid is sucked into the liquid, and the liquid in the pump shell has the conversion of the energy form, so that the fluid can obtain the mechanical energy mainly with the static pressure.The characteristics of the system: the suction diameter than out of large diameter, the general valve installed.
- Q:When the water pump is started, why should it start when the outlet valve is closed? Thank you
- And the pump at the start, if the valve opening pump, then the pump outlet pressure (head) is very small, so the pump flow will be great, the pump power is very large, causing the start-up current is very large. In addition, the starting current of the motor itself is also very large. These two factors add up to the possibility of overloading the motor, resulting in failure to start or even burn the motor.
- Q:What is the distance between the pump and the wall?
- What do you mean by that? If your pump is parallel to the wall! Then, the wall of the pump near the wall is usually 500mm. This is an empirical data, considering the import pipe length, pump maintenance and motor heat dissipation and other aspects of the situation to determine. Dozens of pumps installed in our company are placed in this size! Hope to be of help to you.
- Q:How is the pump level of submersible sewage pump determined?
- Generally as:The bottom elevation of sump sump plus 300 is the water level of pump stopThe top 300 of the sump top elevation is the pump water level
- Q:Roots pump and dry pumpRecently involved in the work of the vacuum pump, don't understand this, is a ads602 vacuum pump, composed of roots pump and dry pump, is pre pumped to the 500mtorr equipment, the main pumping vacuum continues to 10mtorr, where the roots pump and dry pumps must be used? What role they play respectively. The so-called dry pump? Is refers to one kind of the pump, the pump is many dry pump? Also do not understand how the work of automatic switching system for pre pumping, the main pump, pump work alone did not connect system ah (of course there are even a butterfly) teach?
- Different working conditions, our company does dry claw pump alone can also achieve the vacuum of 133 PA.
- Q:What is the Rhodes pump?
- Best answerRoots vacuum pump (referred to as: Roots pump) refers to the pump is equipped with two opposite direction of synchronous rotation of the leaf rotor, rotor, rotor and pump housing between the walls of a small gap and no contact with a variable capacity vacuum pump.Roots vacuum pumps have been tested for long time in the fields of petroleum, chemical, plastic, pesticide, steam turbine rotor dynamic balance and aerospace simulation, so it should be popularized and applied in china. It is also widely used in petroleum, chemical, metallurgical, textile and other industries. Vacuum pump fittings are used for noise control of vacuum pumps, vacuum pump silencers.
- Q:What are the conditions required for hydraulic pumps to complete oil absorption and compression?
- Volume conditions: oil absorption cavity from small to large, complete oil absorption, oil pressure chamber has become smaller, complete pressure oil.Sealing conditions: the hydraulic pump itself should have good sealing
- Q:What's the difference between a centrifugal pump and a centrifugal pump? What are they used for?
- Centrifuges are generally used to classify liquids of different densities in liquids.
- Q:What is a positive displacement pump? He Weizheng displacement?
- The principle and structure of displacement pumps are similar to those of hydraulic motors. Positive displacement is the pump outward to provide flow and pressure, that is, conventional pumps. A negative displacement pump is a hydraulic motor that rotates by external pressure and flow
- Q:What's the difference between non negative pressure and variable frequency water pump?
- When peak water is used, the fluctuation of water pressure will be the same for customers! Because the key to the fluctuation of hydraulic pressure is the flow rate of the pump and the lift of the pump. As long as the flow of the selected pump is large enough, the tank is large enough, the lift head is suitable, and the pressure fluctuation is relatively small. And the selection of non negative pressure and frequency conversion pump group is not directly related. If the municipal tap water pressure and water sufficient (large enough diameter), the use of non negative pressure is better. If the municipal tap water pressure and water shortage, you can only use the frequency converter pump + water tank, no negative pressure can not be used.
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DL series vertical multi-stage sectional centrifugal pump
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- 1000 unit/month
OKorder Service Pledge
OKorder Financial Service
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