Pump pump pump is to send liquid or liquid pressurized machinery. It transfers the mechanical energy of the prime mover or other external energy to the fluid, increasing the fluid's energy. Pumps are mainly used to deliver liquids including water, oils, acids and bases, emulsions, suspoemulsions, and liquid metals, as well as liquids, gas mixtures and liquids containing suspended solids. In a broad sense, a pump is a machine that carries or pressurizes a fluid, including some that convey gas. The pump transmits the energy of the prime mover's mechanical energy or other energy to the liquid to increase the energy of the liquid. Water lifting is very important for human life and production. There are various types of water-lifting appliances in ancient times such as the Egyptian chain pump (formerly 17th century), China's orange cake (former 17th century), the potter's wheel (formerly 11th century), waterwheel (1st century AD) and 3rd century BC Ancient Greece Archimedes invented the spiral rod and so on. Around 200 BC, the ancient Greek craftsman Kate Sibius invented the most primitive piston pump fire pump. As early as 1588, there was a record of 4-vane vane pumps, and various other rotary pumps appeared one after another. In 1689, France's D. Papan invented a 4-bladed impeller centrifugal pump. In 1818, the United States appeared with a radial straight blade, half-open double suction impeller and volute centrifugal pump. 1840 ~ 1850, the United States HR Worthington invented the pump cylinder and steam cylinder direct action opposite the piston pump, marking the formation of the modern piston pump. From 1851 to 1875, multistage centrifugal pumps with guide vanes were successively invented, making it possible to develop high-lift centrifugal pumps. Subsequently, a variety of pumps have come out. With the application of various advanced technologies, the efficiency of the pump is gradually increased, and the performance range and application are also gradually expanding. A wide range of pumps, according to the working principle can be divided into: ①power pump, also known as the impeller pump or vane pump, rely on the rotation of the impeller on the dynamic force of the liquid, the energy is continuously transmitted to the liquid, so that the kinetic energy of the liquid Mainly) and the pressure can increase, and then through the pressure chamber to convert kinetic energy to pressure energy can be divided into centrifugal pump, axial flow pump, partial flow pump and vortex pump. ② positive displacement pumps, relying on the periodic changes in the volume of the sealed working space containing the liquid, the energy is periodically transferred to the liquid, the liquid pressure is increased to force the liquid to be forced to discharge, according to the form of motion of the working element can be divided into reciprocating pump And rotary pump. ③ other types of pumps to transfer energy in other forms. For example, the jet pump relies on the high-speed jet working fluid to suck the fluid to be delivered to the pump and then mix it for the exchange of momentum to transfer energy; the water hammer pump uses some water in the flow to ascend to a certain height to transfer energy; Power of the liquid metal in the electromagnetic force generated by the flow and delivery. In addition, the pump can also be transported liquid properties, driving methods, structure, use, etc. for classification. Water lifting is very important for human life and production. In ancient times there were various kinds of water-lifting appliances such as chain pumps in Egypt (17th century BC), tangerines in China (17th century BC), pots and lanterns (11th century BC) and water tankers (1st century AD). More famous also the third century BC, Archimedes invented the spiral rod, the water can be smooth and continuous to a few meters high, the principle is still used by modern screw pump. Around 200 BC, the fire pump invented by the ancient Greek craftsman Kate Sibius was one of the most primitive piston pumps that already had the main components of a typical piston pump, but the piston pump developed rapidly only after the steam engine appeared . 1840 ~ 1850, the United States invented the Worthington pump and the cylinder opposite the direct effect of steam piston pump, marking the formation of the modern piston pump. The 19th century was the climax of piston pump development, when it was used in hydraulic presses and other machines. However, with the rapid increase in water demand, low-speed, heavily-restricted piston pumps have been gradually replaced by high-speed centrifugal and rotary pumps since the 1920s. However, the reciprocating pump still occupies a major position in the field of high pressure and small flow, especially the diaphragm pump and the plunger pump have the advantages and applications. The emergence of rotary pumps has been associated with the increasing diversification of industrial requirements for liquid transport. As early as 1588, there was a record about the four-blade vane pump, and various other rotary pumps appeared one after another. However, until the 19th century, the rotary pump still had the disadvantages of large leakage, large wear and low efficiency. At the beginning of the 20th century, people solved the problem of rotor lubrication and sealing, and they were driven by high-speed motors. The rotary pumps suitable for higher pressure, medium and small flow rates and various viscous liquids developed rapidly. Rotary pump type and suitable for the type of liquid as many other types of pumps less than. The idea of ​​using centrifugal force to feed water first appeared in the sketches made by Leonardo da Vinci. In 1689, the French physicist Papan invented a four-bladed impeller volute centrifugal pump. But closer to modern centrifugal pumps are the so-called Massachusetts pumps with radial straight blades, half-open double-suction impellers and volutes appearing in the United States in 1818. From 1851 to 1875, multistage centrifugal pumps with vanes were invented one after the other, making it possible to develop high-lift centrifugal pumps. Although as early as 1754, the Swiss mathematician Euler proposed the basic equations of the impeller-type hydromechanical machinery, laying the theoretical foundation for the centrifugal pump design. However, it was not until the late 19th century that the invention of high-speed electric motors made the centrifugal pump an ideal source of power The superiority can give full play. Based on the theoretical research and practice of many scholars such as Reynolds in Britain and Pfrederreich in Germany, the efficiency of centrifugal pumps has been greatly improved. Its performance range and application area have also been expanding. It has become the most widely used, The largest pump output. Pumps are usually divided by the principle of positive displacement pumps, power pumps and other types of pumps, such as jet pump, water hammer pump, electromagnetic pump, gas lift pump. In addition to the principle of pump classification, but also by other methods of classification and naming. For example, according to the driving method can be divided into electric pump and water pump; according to the structure can be divided into single-stage pump and multi-stage pump; According to the use can be divided into boiler feed pump and metering pump; According to the nature of liquid can be divided into Pumps, pumps and mud pumps. Positive displacement pump is to rely on working elements in the pump cylinder for reciprocating or rotary motion, so that work volume alternately increase and decrease, in order to achieve liquid inhalation and discharge. The reciprocating motion of the working elements of the positive displacement pump called the reciprocating pump, known as rotary motion rotary pump. The former suction and discharge process alternately in the same pump cylinder, and by the suction valve and the discharge valve to control; the latter is through the gear, screw, leaf rotor or slide and other working elements of the rotation, forcing the liquid from inhalation Side to the discharge side. Volumetric pump at a certain speed or reciprocating frequency of the flow is certain, almost no change with the pressure; reciprocating pump flow and pressure pulsation, the need to take appropriate measures to reduce pulsation; rotary pump generally no pulsation or only a small Pulsation; with self-suction capacity, the pump can be started immediately after the suction of liquid in the suction pipe; start the pump must be completely open the discharge pipe valve; reciprocating pump for high pressure and low flow; rotary pump for small and medium-sized flow And higher pressure; reciprocating pump suitable for conveying clean liquid or gas-liquid mixture. In general, positive displacement pumps are more efficient than power pumps. Powered pumps rely on the impellers' ability to rapidly rotate the impeller to transfer mechanical energy to the fluid to increase its kinetic energy and pressure, and then through the pump cylinder to convert most of the kinetic energy to pressure energy for delivery. Power pump, also known as impeller pump or vane pump. Centrifugal pumps are the most common type of power pump. Power pump at a certain speed has a limited head lift
Apple House Container
Apple house container customization should pay attention to internal requirements
Many scenic spots now use apple cabin home. Such small houses are beautifully designed and fully functional. Generally speaking, such houses are transformed using containers. The price of color steel plates is still very favorable, and they can also be designed and constructed according to our needs, and the practicability is also guaranteed. However, you must determine the internal requirements when customizing.
Small and novel appearance design
The reason why many scenic spots and mobile stores now choose to use Pod Apple Cabin is actually because of its unique overall design style, and it is also very convenient to use. In addition to the choice of container materials, it can also be matched with various explosion-proof glass, etc. This kind of house is exquisite in style, unique, and also has a good eye-catching effect, which is very suitable for merchants to choose. And you can also design some distinctive styles according to your own needs. The practicality of such container houses is also very good.
Reasonable division of internal design functional areas
Container Home Apple Cabin needs to be divided into different functional areas because of its relatively small overall size and specifications, so we must also pay attention to the overall internal design requirements. Generally speaking, the design style of the Container House is relatively simple, and there is no load-bearing wall inside, so the functional areas can be divided according to actual needs. We only need to clarify our basic requirements, divide the interior well, and use certain screens or sliding doors. Such container houses are very convenient to use and can also meet the requirements of different businesses.
Pay attention to the overall load bearing
Even if it is a small apple house, it is also necessary to pay attention to the load-bearing situation. It is generally recommended to choose light decoration, which can effectively reduce the overall weight. It is recommended to do a comprehensive design well, and also pay attention to the basic load-bearing capacity of the container house and whether there are other design requirements. You can directly contact the manufacturer for customized processing, which can ensure that the size and specifications of the container house meet the requirements, and the price is also very favorable.
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