The main parameter of the pump

The main parameter of the pump - the amount of fluid being transported in unit time, ie, carried out flow rate Q. For bolshinstvanasos critical technical parameters also include: developed pressure p or the corresponding pressure H, N, and power consumption efficiency h.

Classification of pumps USA Standard

Devices for pressure transfer of liquids are divided into species and varieties on various grounds, such as the principle of action and design. Such a feature form the basis for the classification provided in the USA Standard (ASTM 17389-72). AN can also be divided into 2 groups: the pumps, machines, actuated by motors and pumps, devices that operate at the expense of other energy sources and have no moving working parts. Pump machines are lobed (centrifugal, axial, vortex), reciprocating, rotary (gear, rotatory, plate, screw, etc.). K-pump apparatuses include jet (liquid-liquid and gas-liquid), gas-lift (including airlift), a propellant (including steam and gas), hydraulic rams, magnetohydrodynamic pumps, etc.

Another way of pumps began with the invention of the so-called rotary pumps

Another way of pumps began with the invention of the so-called rotary pumps, had one rotor, which were also described Rammell. Pump with eccentric rotor is the prototype of modern sliding pumps. In 1624 I. Leyrehon in the book "La recreation mathematiqae" described the rotatory rotor pump, which can be regarded as the prototype of modern gear pumps. Later came other varieties, and rotary pumps, representative of which is, for example, labyrinthine pump, already established in the 50-ies. 20. The first vortex pump, called the centrifugal self-priming, was proposed in 1920 in Germany, engineer S. Hinshaw, and then appeared and others species.

The idea of using centrifugal force, the liquid appeared in 15. Even Leonardo da Vinci and, apparently independently of it was implemented in the early 17 century. Blankano French engineer, to build a simple centrifugal pump for water, which served as a working body of the open spinning wheel. One of the first centrifugal pump with volute casing and the four-bladed impeller was proposed by French scientist J. Papen, who perfected the design previously known blowers "Hessians". In the late 19 century. When there were high-speed heat, and then electric motors, centrifugal pumps have wider application. In 1838 Russian engineer A. Sablukov established on the basis of his earlier fan built single-stage centrifugal pump, in 1846 an American engineer, Johnson proposed a multistage horizontal pumps, in 1851 a similar pump was set up in the UK patent Guinn (Guinn pump), in 1899 a Russian engineer VA Pushechnikov developed a vertical multistage pump for drilling wells up to 250 m. This pump is built in Paris at the factory Farcot (pump FARC), was intended for water supply in Moscow, had a supply of 200 m3 / h, the efficiency to 70%.

Third direction development of devices for feeding pressurized fluid combines several ways of creating pumps

Prototypes of the propellants, according to the testimony of Heron, already produced in ancient Greece (the device to dislodge from the vessel of water heated air or steam). The first propellant production facilities were proposed in 1698 by British engineer T. Severi steam pumping plant. This device can be considered a prototype invented in Germany in 1871 Hullem pulse meter, which took two cameras and operate automatically.

The idea of using compressed air for water expressed in 1707, Papen and other engineers, but little has been applied much later (20.) - In monzhuse and double chamber water pump replacement for water wells (design engineer VP Savotin, USSR) . The water under the pressure of the combustion products of liquid fuel has been implemented in the UK in 1911 NL Humphrey.

Fundamentally different way of water or oil from wells with compressed air or other gas was used in gas lift, which had been proposed in the mid-19 century. And later found a practical application.

With the invention of the Montgolfier in 1796 automatically acting hydraulic ram there has been another way of development of devices for feeding pressurized fluid whose operation was based on the use of water spray from time to time created by water hammer. In the future, have been proposed various designs of hydraulic rams.

One variety of pump-sets was water-jet pump, which is like a laboratory device was proposed by British scientist D. Thompson in 1852 and served for the suction of water and air. The first design jet apparatus employed engineer Nagel in 1866 (presumably in Germany) to remove water from mines. Later established various jet pumps in the form of water-ejectors, steam-water injector, and many other fundamentals of the theory of jet pumps were laid in Tseynera G. and W. Rankin for the 2 nd half of 19. And received a significant development in the 30's. 20. Thanks to research by American engineers and O'Brien Goslina and Soviet specialists LD Berman, K. Baulina, A. Lozhkin, E. J. Sokolov, N. Singer, and others later proposed hydro-pneumatic water pump for wells (VP Sirotkin, YS Surenyants), in a design which combined jet pump airlift and. One of the directions of development of pump-sets is the creation of magnetohydrodynamic pumps. The first of these pumps at constant current proposed Golden (1907) and Hartmann (1919) and pumps with alternating current - Chubb (1915). However, they have become widely used in the USSR and abroad, only in 50-60-ies. 20., Mainly due to the success of nuclear energy. T., equipment lifting and moving initially only the water, then oil and other liquids in every period mainly corresponded to the level of development of productive forces and production relations.

Taco 007

In Washington state area require special attention as a problem of supply of houses with water and sanitation problem. Solve them will Taco pump equipment. On the main types of Taco pumps and requirements for their installation tells pump specialist.

- Serg, what types of pumps may require owners of Seattle?

- Customers of Taco company offers a wide range of pumps - Taco 006, Taco 007, Taco 008, Taco 009 and Taco 0010. Each of these species - its scope.

- Let's look at all the specific examples. Which Taco pump would be used for watering the garden?

- Summer residents are very popular among domestic circulator pumps "Taco". The capacity of 0,2 kW and 0,43 m3 / h capacity enough to ensure the garden plot and a house with water from a nearby reservoir. Household vibrating pump differs from the circulator pump and the lack of engine rotating parts, which greatly enhances its mechanical efficiency. He has a small size, it is easy to use and capable of pumping water at a distance of tens of meters.

- Which Taco pump to use if you want more water for household use?

- Automate the process of plumbing from wells or shallow (5-7 meters) wells will help small pumping stations. This station is mounted on the same basis and a small pump, at 22-25 liters, a membrane tank (accumulator). I must say that the weight represented in the assortment MPO Wiring "pumping stations is around 12-22 kg, that is, it may well carry one person.

How to size Taco-007 pump?

The most important parameter characterizing the Taco-007 pump, is its capacity (m3 / h). This figure indicates how much water is available for a certain period of time with such a station. We presented a range of alluvial stations manufactured by "Grundfos" (Denmark-Germany), "Taco" and "Speroni" , "Leader" (China), this figure is from 2.7 to 3 9 m3. Rated power ranges from 0,55 to 1,3 kW. Products are represented in the product group N07 on the price-list company.

An excellent solution for a country house will be a system of automated water "fountain house" production company "Dzhileks. It includes a submersible pump, control unit, pressure sensor, pressure gauge, hydraulic accumulator and a filter. The system costs much more affordable foreign counterparts, has a protection against "dry run" and surges.

- If the water in the well, poor quality, and the shallow well has ceased to provide the right amount of water, many have to think about the drilling of deep wells. What pump should be used if the aquifers are at a level below 10 meters?

- There should consider the option of using submersible pumps. Our company offers downhole pumps manufactured by «Grundfos», «Sumoto» (Italy), "Promelektro" (Ukraine) and "Dzhileks" (Russia).

Features passes through the PEX Tubing constructions

When the device internal PEX tubing networks (radiant heating, hot and cold running water, gas, sewer and drains) used tubes of different strength and surface hardness of materials (steel, copper and various PEX).

Some of these pipelines are almost always located in the interior ceilings, walls, walls and foundations. For risers, for example, the length of this part can be up to 10% (the distance between the sexes of adjacent floors - 3 m and the thickness of the floors - 0,3 m). The above elements of buildings can be implemented as a solid (concrete, bricks, etc.), and a relatively soft (wood, plaster, sheetrock, etc.) of building materials.

In this context, the assemblymen domestic pipeline networks, the question always arises [1], which are connected with the omission of polymer piping through constructions:

* How will affect the long-term strength behavior of soft polymer piping it into direct contact with the element of solid building material;
* How will affect the strength of the direct contact element of soft construction material to the pipeline of solid material.