Buy now pump there is no difficulty: the shops and firms involved in trafficking of pumping equipment quite a lot. It only remains to sort out a number of questions: What pump for its purpose, its scope, design features and characteristics. After that, we can assume that you are ready to choose the pump that best meets the specific domestic goals.
Consider some of the technical details of the example pump company Taco, offering a wide range of pumping equipment to meet the needs of any customer such as: Taco 007, Taco 009, Taco 0013 and other circulators.
Thus, small portable pumps Taco in plastic made from corrosion-resistant materials and have a ceramic shaft, which ensures long-term operation and reliable operation of the pumps in aggressive water. The presence of plug connectors between the pump rotor and supply cables prevents the failure of the pump in case of suspending him for the Taco cable.
Monday, November 15, 2010
Friday, November 12, 2010
Pump rotor connection to the network
To connect to a network of Taco penciled him a wire or cable is cut and attached to the ends of the excretory or terminal screws in the inlet box. Some types of pump rotors have the box for fixing and commissioning of cables, steel pipes, metal hoses and other cable carve and finish steel pipes, flexible metal hose, etc., outside input boxes can not, because the ends of wires or cables in this case will be protected and can be damaged. Explosion-proof Taco pump rotors are connected to the network by entering into a box of wire and cable cross-section of 25 mm2 with a rubber or paper insulation.
If you connect a cable, whose cross section greater than 25 mm2, in front of the pump rotor install a special adapter box, which operates cable preparation. Wires and cables with a single-current-carrying conductors attached to the terminal screws of the Grundfos pump rotor directly to the inlet box (using bent at the end of the vein rings), and the wires and cables with stranded conductors supplying tips, fixed on the veins pressing or soldering. Tip and ring wear on the screws, opening the box and tighten the two nuts and washers, making sure the reliability of mounting screws and contact the correct jumper settings, connecting pump rotor windings in a star or triangle, depending on the rated voltage of the pump rotor and the network. Then the inlet box closed with a lid or cover to avoid accidental touching of naked, although isolated, conductors, and also keep water and foreign objects on them.
If you connect a cable, whose cross section greater than 25 mm2, in front of the pump rotor install a special adapter box, which operates cable preparation. Wires and cables with a single-current-carrying conductors attached to the terminal screws of the Grundfos pump rotor directly to the inlet box (using bent at the end of the vein rings), and the wires and cables with stranded conductors supplying tips, fixed on the veins pressing or soldering. Tip and ring wear on the screws, opening the box and tighten the two nuts and washers, making sure the reliability of mounting screws and contact the correct jumper settings, connecting pump rotor windings in a star or triangle, depending on the rated voltage of the pump rotor and the network. Then the inlet box closed with a lid or cover to avoid accidental touching of naked, although isolated, conductors, and also keep water and foreign objects on them.
Grundfos pumps
The operating principle of the volume-the inertial pumps with electromagnetic vibration actuator based on the use of electromagnetic waves transmitted by the valve-fin. At the maximum pressure up to 40 m delivery pump is 1,5 m3 / h. Their capacity to 250 Tues
Electromagnetic Household Pump "The Kid" is designed for lifting water from tube wells with a diameter of 100 mm. When the pump must be completely submerged in water. Mono-space NEB-1/20 pump is designed for wells with a diameter of 200 mm. These pumps are powered by single phase line voltage of 220 V. The time of continuous operation up to 2 hours, followed by switching off for 15 ... 20 min.
Vibrating pump «Taco» raises water from a depth of 20 m, and Grundfos 15-42 F - from a depth of 40 m. The pump "
Grundfos UP15-42B5" in its parameters is not different from the pump, "
". Pump power «Taco» 300 W, flow 0.5 m3 / h.
Electromagnetic Household Pump "The Kid" is designed for lifting water from tube wells with a diameter of 100 mm. When the pump must be completely submerged in water. Mono-space NEB-1/20 pump is designed for wells with a diameter of 200 mm. These pumps are powered by single phase line voltage of 220 V. The time of continuous operation up to 2 hours, followed by switching off for 15 ... 20 min.
Vibrating pump «Taco» raises water from a depth of 20 m, and Grundfos 15-42 F - from a depth of 40 m. The pump "
Grundfos UP15-42B5" in its parameters is not different from the pump, "| Grundfos UP15-42FR |
Taco 006 - high-pressure pump
These pumps are typically multi-stage. Intensity of the pump depends on the size of the impeller, and other factors. Head in Circulating pumps of high pressure is achieved by using multiple impellers installed in series. Kinetic energy is converted into pressure in the working part, and partly rectifying apparatus.
Due to the possibility of varying the number of stages Taco 006 pump high pressure develops a higher pressure than low pressure single stage Circulating pumps.
Some pumps are up to 20 degrees. Thus, they can provide pressure up to 250 m. Almost all of the Taco 006 pump pressure, which we have described belong to the family of Dry pump rotor. Nevertheless, in recent years manufacturers successfully equip their engines with wet rotor.
Special instructions for block pumps
• Block pumps should be installed on the respective bases or brackets.
• Installation of block pump, at which the pump rotor and terminal box facing down, is not allowed. All other mounting methods are considered acceptable.
Detailed information on how to install, see the instructions for installation and operation.
Due to the possibility of varying the number of stages Taco 006 pump high pressure develops a higher pressure than low pressure single stage Circulating pumps.
Some pumps are up to 20 degrees. Thus, they can provide pressure up to 250 m. Almost all of the Taco 006 pump pressure, which we have described belong to the family of Dry pump rotor. Nevertheless, in recent years manufacturers successfully equip their engines with wet rotor.
Special instructions for block pumps
• Block pumps should be installed on the respective bases or brackets.
• Installation of block pump, at which the pump rotor and terminal box facing down, is not allowed. All other mounting methods are considered acceptable.
Detailed information on how to install, see the instructions for installation and operation.
Circulating pump: Types of installation
Permissible mounting methods
• In-line pumps are designed for horizontal and vertical mounting directly to the plumbing pipeline.
• To remove the pump rotor, the pump elements is sufficient space.
• When connecting the plumbing pipeline to the pump should not be given voltage and weight plumbing pipeline, a pump must be installed on the support (if any).
Improper installation
• Installation at which the pump rotor and terminal box facing down, is not allowed.
• If the power of the engine exceeds a certain level, before installing the pump in a horizontal position should consult with the manufacturer.
Incision Circulating high pressure pump and its characteristics
- Section Circulating high pressure pump
- Characteristics of high-pressure Circulating pump
• In-line pumps are designed for horizontal and vertical mounting directly to the plumbing pipeline.
• To remove the pump rotor, the pump elements is sufficient space.
• When connecting the plumbing pipeline to the pump should not be given voltage and weight plumbing pipeline, a pump must be installed on the support (if any).
Improper installation
• Installation at which the pump rotor and terminal box facing down, is not allowed.
• If the power of the engine exceeds a certain level, before installing the pump in a horizontal position should consult with the manufacturer.
Incision Circulating high pressure pump and its characteristics
- Section Circulating high pressure pump
- Characteristics of high-pressure Circulating pump
Grundfos dry pump rotor
Mechanical seals
The basis of design of the mechanical seal are two rings with carefully polished surfaces. They are pressed together by a spring, and work together. CTS are dynamic seals and are used for sealing a rotating shaft in a fluid at high operating pressures. Grundfos is composed of two highly polished wear rings (for example, silicone or graphite), which are pressed together by axial forces.
One ring (dynamic) rotates with the shaft, while the other ring (static) still fixed into the body. Between the sliding surfaces a thin film of water that serves as lubrication and cooling. Depending on the mode of operation of the pump are several possible types of friction mating surfaces: a mixed friction, boundary friction or dry friction, the latter (which occurs at no lubricating film) causes environment destruction of the surfaces.
The service life depends on operating conditions such as composition and temperature of the working fluid.
Mechanical Seals
The materials for seals use high quality yarn from synthetic fibers such as Kevlar ® or Twaron ®, PTFE, porous graphite yarn, yarn of synthetic mineral fibers and natural fibers such as hemp, cotton or ramie.
Material for the seals is available in the form of threads or compacted coils in dry form or with special impregnation depending on the destination. If the material is purchased in the form of threads, you must first form a ring and give it shape. Then, the ring gland is wrapped around the pump shaft and tightened using crimp sleeves.
The basis of design of the mechanical seal are two rings with carefully polished surfaces. They are pressed together by a spring, and work together. CTS are dynamic seals and are used for sealing a rotating shaft in a fluid at high operating pressures. Grundfos is composed of two highly polished wear rings (for example, silicone or graphite), which are pressed together by axial forces.
One ring (dynamic) rotates with the shaft, while the other ring (static) still fixed into the body. Between the sliding surfaces a thin film of water that serves as lubrication and cooling. Depending on the mode of operation of the pump are several possible types of friction mating surfaces: a mixed friction, boundary friction or dry friction, the latter (which occurs at no lubricating film) causes environment destruction of the surfaces.
The service life depends on operating conditions such as composition and temperature of the working fluid.
Mechanical Seals
The materials for seals use high quality yarn from synthetic fibers such as Kevlar ® or Twaron ®, PTFE, porous graphite yarn, yarn of synthetic mineral fibers and natural fibers such as hemp, cotton or ramie.
Material for the seals is available in the form of threads or compacted coils in dry form or with special impregnation depending on the destination. If the material is purchased in the form of threads, you must first form a ring and give it shape. Then, the ring gland is wrapped around the pump shaft and tightened using crimp sleeves.
Circulating Pump Installation
In installations where the level of fluid intake is below the axis of the circulator pump used to fill in two ways:
1) in aggregates of a small filing with the diameter of the suction pipe of 250 mm at the end of her under the water level have a foot valve. In this case, make the filling through a funnel and a crane at the top of the pump casing from the PEX Plumbing system or special filler tank;
2) in the aggregates with d> 250 mm receiving valves do not put produce and fill with suction air from the pump is a special expansion pump (commonly used types of Grundfos pumps and Taco, creating a expansion to 97%).
If there is contamination of the liquid intake funnel on the suction tube is combined with a slit or a strainer. Control over the operation of the pump is over the testimony of the gauge and pressure gauge attached to the suction by the discharge nozzle, flow measurement is made on the flow-meter mounted in the pump discharge line.
So how about a load of the pump can be measured by manometer readings, are often reluctant to install meters on each pump and have a meter on the common plumbing pipeline, controlling for his testimony filing unit as a whole. As the flow meters are used diaphragms, Venturi tubes and wing water meters. Power expended by the unit, is determined by the voltmeter, ammeter or wattmeter, disposable on an Taco board assembly cli install.
To start the pumping unit should produce preliminary tasks: to ensure free rotation of the shaft, check the tap and manometer gauge, fill pump and suction pipe, open the flow of cooling water into the bearings (in units with a cooled bearings), to check the position of the oil in the bearings (at bearings lubricated). Valve on the discharge plumbing pipeline Circulating pump during start-up must be closed (for n <250 br="">
Start the pump is as follows: turn on the motor and speed it is brought to normal, slowly open valve on the pump discharge nozzle to achieve the required filing date; open valves that lead to the cooling water pump seal. When the pump should monitor the temperature of the bearings and the motor housing, which under normal circumstances should not exceed 60 ° C, the presence of oil in the chamber bearing (with oil lubrication), the density of glands (tightening of the packing is considered normal if he misses a few drops of water and temperature it is low).
Stop pumping unit is closing the valves on the discharge pipe, turn off the engine, close the valve on the suction tube and the cooling off seals and bearings). Start, the service at work and stop assemblies considerable power necessarily governed by special instructions. Special instructions subject to the exploitation of nutrient pumping units of steam boilers and pumps for hot liquids.
With modern technology development of automatic process control automation of pumping units is not difficult. Automatic pump control provides the following operations:
1) preparation of pumps to start, is to monitor the position of valves and pumps filled with liquid;
2) starting and stopping of pumps depending on the flow required by customers;
3) Stop the pump at fault it and start another pump to replace a faulty;
4) protection against overheating, seals and bearings;
5) the protection of hydraulic pumps, it becomes impossible to start the pump, not filled with fluid.
In developing the scheme of automation and protection of pumps may be provided for the necessity of pumping unit for the intended program. Automation improves the efficiency and reliability of the pumping unit, reduces the number of attendants.
1) in aggregates of a small filing with the diameter of the suction pipe of 250 mm at the end of her under the water level have a foot valve. In this case, make the filling through a funnel and a crane at the top of the pump casing from the PEX Plumbing system or special filler tank;
2) in the aggregates with d> 250 mm receiving valves do not put produce and fill with suction air from the pump is a special expansion pump (commonly used types of Grundfos pumps and Taco, creating a expansion to 97%).
If there is contamination of the liquid intake funnel on the suction tube is combined with a slit or a strainer. Control over the operation of the pump is over the testimony of the gauge and pressure gauge attached to the suction by the discharge nozzle, flow measurement is made on the flow-meter mounted in the pump discharge line.
So how about a load of the pump can be measured by manometer readings, are often reluctant to install meters on each pump and have a meter on the common plumbing pipeline, controlling for his testimony filing unit as a whole. As the flow meters are used diaphragms, Venturi tubes and wing water meters. Power expended by the unit, is determined by the voltmeter, ammeter or wattmeter, disposable on an Taco board assembly cli install.
To start the pumping unit should produce preliminary tasks: to ensure free rotation of the shaft, check the tap and manometer gauge, fill pump and suction pipe, open the flow of cooling water into the bearings (in units with a cooled bearings), to check the position of the oil in the bearings (at bearings lubricated). Valve on the discharge plumbing pipeline Circulating pump during start-up must be closed (for n <250 br="">
Start the pump is as follows: turn on the motor and speed it is brought to normal, slowly open valve on the pump discharge nozzle to achieve the required filing date; open valves that lead to the cooling water pump seal. When the pump should monitor the temperature of the bearings and the motor housing, which under normal circumstances should not exceed 60 ° C, the presence of oil in the chamber bearing (with oil lubrication), the density of glands (tightening of the packing is considered normal if he misses a few drops of water and temperature it is low).
Stop pumping unit is closing the valves on the discharge pipe, turn off the engine, close the valve on the suction tube and the cooling off seals and bearings). Start, the service at work and stop assemblies considerable power necessarily governed by special instructions. Special instructions subject to the exploitation of nutrient pumping units of steam boilers and pumps for hot liquids.
With modern technology development of automatic process control automation of pumping units is not difficult. Automatic pump control provides the following operations:
1) preparation of pumps to start, is to monitor the position of valves and pumps filled with liquid;
2) starting and stopping of pumps depending on the flow required by customers;
3) Stop the pump at fault it and start another pump to replace a faulty;
4) protection against overheating, seals and bearings;
5) the protection of hydraulic pumps, it becomes impossible to start the pump, not filled with fluid.
In developing the scheme of automation and protection of pumps may be provided for the necessity of pumping unit for the intended program. Automation improves the efficiency and reliability of the pumping unit, reduces the number of attendants.
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