DL series vertical multi-stage sectional centrifugal pump

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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

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Q:How much water does the water ring vacuum pump run for an hour? If there is no steam separator, does the water vaporize?
For example: water storage is relatively small, it needs to reduce the temperature of the heat exchanger. If the tank is relatively large, it does not need cooling water circulation pump again when the temperature is very low, there is no need to heat exchanger. So you need to ask how much water this is not OK.In a soda separator problem:
Q:The working principle of magnetic pump
Working principle of magnetic pumpN of the magnet (n is even) arranged according to the laws in the magnetic clutch assembly inside and outside the magnetic rotor, the magnet part consisting of magnetic coupling system. When the inside and outside the two poles in different relative displacements, two poles between the angle phi = 0, the lowest energy magnetic system; when rotates to the relative displacement is two poles, pole angle between phi = 2 pi /n, the magnetic system of magnetic energy. Remove the external force, due to the magnetic system of magnetic poles repel each other, magnetic magnet will return to the lowest energy state. So magnets in motion, driven by the magnetic rotor.
Q:Why should the pump be closed when the centrifugal pump is started?
Centrifugal pump has an important characteristic: when the pressure (head) is very low, the flow will be great, which can be seen from the characteristics of the pump curve. While the pump power is directly proportional to the flow rate, pump start, no pressure in the pipeline, caused by the pump flow, high power pump, and the pump motor, the rotating part from rest to high-speed operation, need a lot of acceleration, it will cause a great starting current
Q:Water pump spoon pipe for power plantWhich hero can tell me what is the water pump spoon tube ah? And its role
By adjusting the amount of oil entering into the hydraulic coupler, the torque of the hydraulic coupler can be controlled
Q:How to distinguish the flow and displacement in the hydraulic pump? What's the difference between the two?
If you're allowed to spend a minute, you can do it 20 times a minute, and that is, the amount of water you sprinkle at a time (1000) is *20.1000 (ML) *20=20000 ml =20 liters, this is the flow,Here is a formula for you to see,Pump displacement * pump speed = flow,
Q:Why is the sewage pump device coupler?
The automatic coupling device but the installation of GAK type submersible sewage pump, need lifting, people may not need to unscrew the screw water, the water pump can directly improve, after repairing down along the guide rail can realize sealing pump and pipeline, water pump and normal operation. Small sewage pump can be installed freely, large sewage pumps are generally equipped with automatic coupling device, automatic installation, installation and maintenance is very convenient.
Q:What are the starting and stopping procedures for centrifugal pumps?
The use of centrifugal pump can be divided into three steps, namely, start, run, stop.Start: you should do the following preparation before starting:(1) check the water pump equipment in good condition.(2) the bearings are filled with oil, the oil level is normal, and the oil quality is qualified(3) all the inlet valves of the centrifugal pump are opened.(4) pump water injection or vacuum pump diversion (except for flow), open the vent valve exhaust.(5) check the leakage of shaft seal. It is advisable to fill the seal with a little drop of water.(6) the motor rotates in the right direction.
Q:What does the pump mortar do?
Concrete pump before the need to transport water and pump pump material, dredge pipeline. In accordance with the technical specification for concrete pumping construction (JGJ/T10 - 1995), pumping concrete, pump mortar generally use cement slurry
Q:What is the pump, how to classify, mainly used in where?
Classification of pumpsAccording to the principle of division:1. displacement pumpDepending on the movement of the work parts, the volume of the work increases periodically and reduces the suction and discharge of the liquid, and the pressure of the liquid increases directly by the extrusion of the working partsAccording to the different movement of moving parts, it can be divided into two types: reciprocating pump and rotary pumpAccording to the structure of the moving parts are different: piston pump and piston pump; there are gear pumps, screw pumps, vane pumps and water ring pump
Q:How to select metering pump head?
The manufacturers of chemicals will give relevant recommendations, or consult the ProMinent chemical corrosion chart to determine the compatibility of the chemicals with the contact material.

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