Current Situation of Chinese Industrial Nozzle Development

Industrial Nozzle Market

Judging from the whole market, there are mainly two markets: one, the domestic market, the domestic market is divided into the market of new construction, expansion agenda item, old renovation project market. And seen from this two markets, the ordinary industrial nozzle products can meet the basic domestic requirements of the industry, so companies competing strongly between each other, and the disorderly competition, the end of price competition, low market prices, and some businesses are in the harsh competition, there has been the reality of loss. Along with the opening up of the market, nozzle enterprise market demand and are becoming deeper, exacerbated by the cost of product development and production of human and material resources, production cycles are getting shorter. With the introduction of China's 12th Five-Year Plan program, particularly the urban construction nozzle is a large market. A lot of the spray gun nozzle manufacturers need to play solid basic skills, produce high-quality nozzle, meet the demand of China's industrial nozzle market, reduce cost of development. China still needs to produce a more durable and higher temperature silicon carbide nozzle to meet China's silicon carbide nozzles are highly dependent on the situation of import.



Foreign Market of Nozzles

Foreign markets industrial nozzle at this stage is also in our very active development trends, the competition is very intense, the import and export of the South African National nozzle market get the rapid growth. The economy and trade get sustainable development in the North American countries, Japan, the United States, Germany and other countries and the region exports expand imports of high-speed growth, the formation of a strong the international industrial nozzles market prosperity supporting surface. International trade integration will promote the development of international industrial nozzles market, it can be expected in the next millennium, and industrial nozzles market will be one-sided downtown. With the development of China's economic construction, China's focus on economic construction, agriculture, environmental protection, industrial, infrastructure, nozzle market in the future, mainly in the power, petrochemical, oil, and other urban construction industry, what is waiting for us will be the development of high-quality industrial nozzle. The main products are: the high-temperature high-pressure casting atomizing nozzle, large-caliber, anti-B alkalinity industrial nozzle, nozzle huge market share special places to meet China's chemical industry nozzle.

Development Proposals for Nozzle Enterprise

Currently, the manufacturers of the industrial nozzles industry in China gradually increase research and development efforts, but the outdated of products and technology makes competition not effective, the production nozzle species can only meet about 70% of the market demand, and there is shortage of low-voltage large-caliber. The nozzle cannot meet domestic demand, as well as the new products to be developed, industrial nozzle enterprises should increase R & D efforts to increase capital investment, increase the development of new products, since the market competition is always based on the quality of service to win enterprises to establish their own brand, their own special products, these are the industrial nozzle enterprise survival skills.

www.spray-nozzle.net is a high tech company which combined R & D, sales and production together. It has become one of the biggest manufacturers of spray nozzle in China after a development of more than 11 years. If you are interested in our products , welcome to have a look at our website!

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Knowledge on Industrial Spray Nozzle Rapid

Application & Classification of Spray Nozzle

Although nozzle applications are various in all kinds of industries, but generally, common industrial nozzle applications can be divided into the following four categories: First: Nozzle for cleaning, washing and rinsing: including descaling process and product during hot rolled pressure, the high-pressure and middle pressure cleaning of automotive and equipment. And it also includes the low-pressure flushing and rinsing. Second: Coating nozzle: Spray coating applications include spray rust inhibitor, a plastic coating, release agent, lubricant, protective film and a wetting and conservation etc. Third: Cooling nozzle: In such applications, a spray nozzle is used for cooling the solid object, such as continuous casting slab cooling, roll cooling, and processing apparatus of the fitting, the cooling of the tank, as well as circulating water cooling or the like. Fourth: Special applications, including dust control, air and flue gas spray, spray drying, granulation, spray humidification, etc., such nozzle is mostly fan spray nozzle.



Material of Industrial Nozzles

Nozzles used in the iron and steel industry are mostly spray gun nozzle, they are made of copper or stainless steel; in some industry, the spray nozzle made by special materials are applied to the industries such as flue gas desulfurization and sulfuric acid recovery. In general, the high hardness material has better wear resistance. The performance of the continuous casting nozzle and nozzle arrangement with cooling control and nozzle maintenance, caster secondary cooling system, which is one of the largest casting machine pull speed, the role of rate and slab level of variety and quality of the decisive factors. The secondary cooling system is likened to a force, then the cooling control is to do battle command system; the nozzle layout is the strategic plan, and the nozzle is just like soldiers. In an army team, command and deployment is very important, if soldiers are not good at tactics, then it is difficult to win the war.

Problem Prevention and Resolution of Spray Nozzle

In any application of nozzles, the first step and the most important step is to choose the right spray nozzle. Second, a very important step is to establish a set of nozzle maintenance program to detect nozzle performance, application parameters such requirements will be able to maintain well. Each application has its specific requirements, the performance parameters of the nozzle also has the required order. In some spray application, for example, the nozzle has only one purpose. This objective requires only the injector to inject a certain amount of the liquid to the tank; while in some applications, it must ensure that the flow rate of the nozzle is precisely maintained at a certain level. The application of factors to be considered: (First) flow - each nozzle; (Second) spray pressure - in a sprinkler pipe; (Third) spray shape - each nozzle; (Fourth) product quality - provided by the quality control department; (Fifth) the use of effects - dust control, spray drying, flue gas cooling, water cooling, and spray humidification.

www.spray-nozzle.net is a high tech company which combined R & D, sales and production together. Our company has become one of the biggest manufacturers of spray nozzle in China with a development history of more than 11 years. If you are interested in our products, welcome to have a visit our page for more details!

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How to Choose the Nozzles?

Selection of different types of nozzles

There are many types of nozzles, available for many options. Generally, the degreasing and washing step nozzles can choose the jet-type nozzle with strong impact force: Take "V" type that is the segment-type nozzle for example, the angle of injection is 60 ° and has a larger impact strength; phosphating process nozzle can use centrifugal nozzle with good atomization, fine uniform water tablets, weak impact: Take "Z" pattern cone nozzles for example, the optimum distance of the nozzle workpiece is 40cm ~ 50cm, which has dispersion, atomize the liquid spray function. The arrangement of spray gun nozzle on the spout can use parallel and cross two forms, channel type using a vertical cross arrangement, whose spray is better.



Factors affecting the selection of nozzles

The factors for the selection of nozzles include flow, pressure, spray angle, coverage, impact, temperature, materials, applications, and these factors often implicate and mutually restraint each other. Flow and pressure, spray angle and coverage are in proportional relationship. Any nozzle injection purpose is to continuously maintain the bath in contact with the workpiece, the flow factor is more important than the pressure. The temperature of the liquid does not affect the performance of the spray nozzle, but it affects the viscosity and specific gravity, and also influences the choice of materials. The nozzle material should be determined based on the chemical properties of the bath; non-corrosive bath can be cast in bronze or plastic die-casting according to the ease of processing. To prevent corrosion, non-metallic materials can be used; for sulfuric acid, hydrochloric acid strong etching bath, nylon plastic can be used; nozzle material used for phosphating commonly use acid-resistant stainless steel, rust resistant nozzle can use stainless steel or nylon to produce.

Examples of nozzle selection

The nozzle with a certain impact should use small-angle nozzle, plume flow (jet) is the best; fan spray nozzle is suitable for cleaning, degreasing, cooling; conical nozzle is suitable for bleaching cream, the surface layer, phosphide, humidification, dust, etc. Venturi mixing nozzle should be installed in the reservoir paint cylinder, tank, take the "H" type mixing nozzle (also known as venturi nozzle), for example, the bath mixing diffuse and eject with the sucked liquid at after mixing 1:4 at a certain pressure, achieve solute air mixing effect, thereby preventing the precipitation, because the agitation ensurse a uniform mixing of chemical solution.

www.spray-nozzle.net is a high tech company which combined R&D, sales and production together. We have become one of the biggest manufacturers of spray nozzle in China after a development of more than 11 years.

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Technology Development of Atomizing Nozzle

Introduction of atomization technology of atomizing nozzle

Atomization technology has almost covered all industrial sectors, such as transportation, agricultural production, as well as the daily lives of the people, in addition to the combustion of various fuels (gas, liquid and solid fuels), atomizing technology also has a wide range of applications in the industries such as non-combustion catalytic granulation, food processing, powder coating pesticide spraying aspects and spray gun nozzle. The so-called liquid atomization means in the effect of the applied energy, the liquid is changed into a liquid fog or other small droplets in the gas environment. Atomization mechanism has been interpreted in a number of ways, such as aerodynamic interference theory, pressure shock theory, the turbulent perturbations theory, air turbulence theory, boundary conditions mutations theory.



Five theories of atomization technology

First, aerodynamic interference theory, Castleman first proposed the aerodynamic interference theory. He believes that due to aerodynamic interference effects between the jet and the surrounding gas, instability fluctuations are produced on the jet surface. With the increase of speed, surface length affected by the unstable wave is shorter and shorter, until microns and then the jet is spread into the mist. Second, Pressure oscillation theory, this theory observes that liquid supply system pressure oscillation has impact on the atomization process. Thus, according to the prevalent pressure oscillations in the general injection system, we can ensure it plays an important role in atomization of atomizing nozzle.Third, Turbulent disturbance theory, this theory believes jet atomization process occurs inside the nozzle, and fluid turbulence may play an important role. Someone also suggest that the radial component velocity fluid movement as turbulent pipe flow nozzle at the nozzle exit resulting in the atomization. Fourth, Air disturbance theory, it holds the opposite attitude to turbulent disturbance theory, it believes that the large-amplitude pressure disturbances in the fuel injection system is caused by atomization. Fifth, Boundary conditions mutation theory, the boundary conditions mutations holds the opinion that at the mutations happen in the nozzle outlet and the boundary condition of the liquid (internal stress). Conclusion of five nozzle theories There are inadequacies in the five nozzles mechanism hypothesis and even conflicting. Most scholars, such as Bracco FV supports aerodynamic interference theory. The hypotheses fully explain the low speed jet breakup and the high-speed jet, and it can be used as the basic cause of the atomization. Now the fuel spray atomization mechanism is researched in two ways at home and abroad: first, use numerical techniques to create a variety of hypotheses model numerical modeling studies; the other hand, use advanced photoelectric test technology to capture the details of the atomization process , in order to provide support for the hypothesis.

www.spray-nozzle.net

We are a high tech company which combined R&D, sales and production together. Our company has become one of the biggest manufacturers of spray nozzle in China after a development of more than 11 years. All the products have passed the ISO9001 and ISO14001 quality and enviroment certificate, which can satisfy the reuqirements of our customers.

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Spray Nozzle Becomes Popular with the Concept of Environmental Protection

Fashion Tread of Nozzle

With the concept of environmental protection is gaining popularity, people has become even more concerned about the utilization of water resources. In order to maximize the utilization of the environmental protection of water resources, the nozzle industry also began to flourish, and compared with the traditional use of the atomizing nozzle, the using of industrial nozzle technology, such as atomizing nozzle technology, spiral nozzle technology and clip buckle nozzle technology will enhance the utilization of water resources to the next level. And in recent days, the experts agreed that, with the acceleration of the process of industrial development and urbanization, water scarcity will become a factor in China's economic development which cannot be ignored, while solving the problem of water shortage in China through sewage treatment, wastewater reuse, and desalination water treatment pathways will have broad market prospects.

Developments Status of Nozzle Technology

The progress and development of all kinds of industrial nozzle technology is the main driving force, the developments from the steam engine to the internal combustion engine, gas turbine thermal power plant all promote the development of fuel or material spray technology, because it is essential for the various processes link. The increasing requirements of energy saving and environmental protection is another driving force to promote the innovation and improvement of spray gun nozzle technology. Increasingly serious trend combustion results in poor air quality. The diversification of fuel materials spray needs also promote the diversification of all kinds of nozzles. Technology development of all kinds of nozzles spraying is reflected in diversification of the structure and applicability, in addition, it is also reflected in the expansion of the spray quality assessment indicators and the development and improvement of the detection means.

The Gap of the Nozzle Technology

In the past 20 years, China has also tracked the world's advanced technology and made some innovations in various fields. But the gap with foreign advanced level is still there. The industrial nozzles are mainly used for the combustion of nozzles, and the pollution emissions are much higher than that in abroad, which does not meet the concept of environmental protection. A large number of low-power, low-pollution, and high-performance combustion kinds of nozzle devices have to be imported from abroad. There are no domestic enterprises with high-volume production capacity to contend with all kinds of nozzles companies. Even the kinds of match nozzles spare parts are from abroad and the regulation match burner components are also from the well-known professional company in the world. This is mainly due to the lack of competitiveness of quality, price and reliability of the domestic, this situation will soon always be changed.

This article is come from:http://www.power-supplier.info/digital-screen/spray-nozzle-becomes-popular-with-the-concept-of-environmental-protection.htm

Nozzle Maintenance before Painting Process

The Reason of the Nozzle Failure

Firstly, erosion: when the high velocity of the liquid goes through the metal surface of the nozzle holes, it will cause the erosion of the nozzle hole resulting in the reduction of the spray gun nozzle, pressure and disorder of the spray state. Probability of erosion depends on the hardness of the liquid, spray pressure, the kinds and amounts of chemical materials. Furthermore, the particulate impurities in the liquid may also cause the punished erosion of the nozzle. Secondly, accidental damage: incorrect use and untimely maintenance are the main reasons for the nozzle accidental damage. Although the nozzle opening is typically designed into saucer shape, the offset of the fan nozzle structure is easy to be damaged. Thirdly, corrosion: when spray and wash the workpiece with chemical materials, these chemical materials can also cause corrosion of the nozzle material. Fourthly, obstruction: chemical materials and impurities are piped in internal or external edge of the nozzle resulting in clogging of the nozzle. This will affect the shape of the fan spray nozzle, which affects the spray pressure. Fifthly, temperature: nozzle has worked for a long time under high or abnormal temperature causing the damage of nozzle due to the softening of material.

Identification of the Nozzle

When the spray pump is running at its rated capacity, the spray pressure of the nozzle will be reduced with the expansion of the nozzle aperture. For the damaged nozzle, even if the nozzle is more than 30% of its rated flow, the change in the state of atomization is also difficult to be recognized by eyes. The best method to identify the nozzle is to observe the change of pressure in the sprinkler pipe. When comparing the different nozzles in the same pre-treatment system, the location and accuracy of the pressure gauge is essential. Usually pressure gauge should be placed in the front end of the spray tube. When judge of the pressure variation of the spray conduit, we should take intact nozzles spray pressure as a reference, and discriminate the problems of nozzle by the difference between the actual pressure and the reference pressure.

Exclusion of Nozzle Problem

Because it is difficult to directly observe the problems of nozzle, so we must pay attention to the selection of the nozzle. Select the appropriate nozzle, and also make a complete set of maintenance and replacement program. Regularly check the nozzle: including regular cleaning nozzle and regularly check the nozzle appearance damage. A few processes (such as pre-skimmed, skimmed) should be carried out in the general pre-processing production. The regular replacement of nozzle: frequency of nozzle replacement depends on the environment, the composition of the spray liquid and nozzle material. If the temperature is higher, or the spray liquid contains impurities, the number of nozzle replacement is relatively frequent.

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Basics of Various Spray Nozzles

Overall of Industrial Spray Nozzle

The nozzle is designed according to their work in a variety of different spraying conditions, and thus in daily work, we should choose suitable nozzles to fit the actual needs, in order to reach the best spray performance. Characteristics of sprayer nozzles are reflected in the nozzle of the spray type, that’s the formation shape when the liquid leaving the nozzle exit, as well as its operating performance. Generally, nozzles are named after the nozzle spray pattern area, usually it is divided into fan-shaped, conical, plume flow (i.e., jet) air atomization, flat nozzle and spray gun nozzle, and the conical nozzle is divided into two major categories: the hollow cone nozzle and solid cone nozzle; and the name of Venturi nozzle (i.e., mixing nozzle), strong cold (hot) outlet hair nozzles and special nozzles (such as garden nozzles, tank washing nozzles, pipe cleaning nozzles series) reflects the operating performance of the spray nozzle.

Application Field of Plastic Nozzle

Plastic nozzle is mainly used in corrosive chemical industry, the commonly used material of the plastic nozzle are PP, PVC, PVDF and TFEL, the shapes of the plastic nozzle are fan-shaped plastic nozzles, solid cone-shaped plastic nozzles, the threaded connection of the plastic nozzle size are 1/8, 1/4, 3/8, 1/2 etc., many threads are optional. Many other threads of these plastic nozzles are open molding, injection molding, the cost is relatively low, but the amount is large, as for the plastic nozzle with big sizes, it can be made by the CNC garage process, but the cost of machined made nozzles is relatively high. Plastic nozzle application areas: cleaning, pickling line of the semiconductor, circuit board industry electrophoresis tanks, etching, stirring, in short, where there is chemical liquid water there is plastic nozzle, the only disadvantage of plastic nozzle is that the poor wear resistance, i t cannot be high temperature resistant. In a word, each plastic nozzle has its independence and special performance.

Working Feature of Plastic Spray Nozzles

Plastic nozzle has special molded import thread, you can easily screw the nozzle into the nozzle tube. The plastic nozzle will have a six-party or the Quartet, in order to facilitate the use of tools, plastic nozzle should be tightened. The unique design of the plastic nozzle ensures that in the installation process, the plastic spray nozzle design can quick and easy book on the nozzle, when the plastic nozzle of the Quartet or the six-party side is parallel to the plastic nozzle jet, the nozzle has been in the accurate bits, which can save us a lot of time and improve production efficiency.

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