High-power LEDs in interior lighting

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graphic LCD - China Manufacturer

Thank you for inquiry my graphic LCD, Tel： +86-571- 85121224, E-MAIL：sales@tsingtek.com

http://www.china-lcdmodule.com/graphic-lcd-module/

1 Introduction

The LED lighting market opportunities for the industry to bring endless imagination, and LED lighting applications, jump from the past Outdoor LED indoor lighting applications. According to Strategies Unlimited, statistics, LED interior lighting within five years there will be a trend of exponential growth. According to the estimates, to 2011, its output value will reach tens of billions of dollars. Especially in 2009, the EU took the lead to ban incandescent plan, as well as energy-saving issues of concern, creating a huge market opportunity LED interior lighting and an optimistic outlook. Below to analyze the development of high power LED indoor lighting cooling technology, optical design and drive design, lighting technology needs.

Development of high power LED lighting in the development of high power LED lighting depends on two elements: First, the chip itself; lighting technology, including thermal, optical drive.

2 chip support

At present, the LED chip technology, the key to development lies in the base material and epitaxial growth techniques. Base material by the traditional materials of sapphire, silicon and silicon carbide, the development of zinc oxide, gallium nitride and other materials. High-power chips for accent lighting and the overall lighting, or for decorative lighting and some simple auxiliary lighting, low-power chips, the key technology upgrades are related to how to develop a more efficient, more stable chip. In a few short years, by means of a series of technical improvements, including chip architecture, surface roughening treatment and multiple quantum well structure design, including LED light effects achieved a great breakthrough. Figure 1 is a schematic diagram of the LED chip structure. With mature production technology, the LED quantum efficiency will further improve the luminous efficiency of LED chips will increase as well.

 

Fan coil units, freezing method

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diffusion fan coil units - China Manufacturer

Thank you for inquiry my diffusion fan coil units, Tel: +86-512-68188280, Email: factory@found-hvac.com

http://www.foundation-hvac.com/key-diffusion-fan-coil-units-687/

fan coil units for low temperature in the winter disabled, and how to antifreeze?
Method One:
A. Central air conditioning in the design should consider wint er frost, frost means recommend the use of hot water, do not support the use of steam and electric heating. Steam antifreeze can also be prone to the phenomenon of uneven temperature, fan coil units, the upper temperature is relatively high, the bottom has begun to freeze. Does not support use of electric heating, the first electric heating is prone to dangerous electric heating costs of electricity, not energy, have to be careful not to individual fan coil switch in the control of all control, it should be.
Two. If the winter does not use fan coil units, it is recommended that:
a. The fan coil inside the water all to let go,
and b. And blind plate in the water supply and return water
(c) The use of compressed air (depending on the size of the fan coil compressed air blowing time)
(d) Fan coil antifreeze, do not have to fill, but make sure the fan coil liquid fully antifreeze dilution.
e. Design, when the circulation pump.
Method 2:
The design of the chilled water system in parallel with a circulating pump of small capacity.
A. If the system in winter is disabled, but a heat source, heat source switch to the fan coil water system, so that the small loop pump running.
Two. No heat source, can be set to the combined operation of an electric heater (shell and tube in parallel with the water system) with the small loop pump, fan coil water system pipe within the water temperature of not less than 5 ° C to ensure ice-free. To the system of water to ensure that 5 ℃, electric heating power is not too large, the running costs are not high, and more reliable than water, antifreeze and other methods. The above method for reference.

Several commonly used river gravel Sand selection of reference

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ball mill grinder - China Manufacturer

Thank you for inquiry my ball mill grinder, Tel:86-371-60130026 E-MAIL:market@hnyigong.com

http://www.enchuangxin.com/key-ball-mill-grinder-38/

Direct impact Sand of river pebbles, river pebbles Sand (Sand), is a production of construction sand, stone equipment. Metal and nonmetal ores of all kinds of hard rocks (rocks, granite, basalt, limestone, river g ravel, etc.) it can be broken into various size construction sand and gravel material, uniform particle size of sandy, high compressive strength, than natural sand, sand hammer to break the production more in line with the high standards of construction sand requirements, can enhance the quality of construction. The production line has a reliable, reasonable design, convenient operation, high efficiency. Sand production line based on the feeder, jaw crusher, PCL direct impact of breaking heavy shaker and efficient sand washing machine, and the belt is connected to a line, is the most advanced modern production lines. The production line uses high-speed rotation thrown round stone throw line speed of 76m / s, and collision resistant liner, forming a stone at the stone, the stone blacksmith\\ s crushing principle. The material to ensure that the entire process smooth and reliable operation, the energy efficient than traditional river g ravel Sand, river gravel, sand making machine equipment, energy saving of 50%.
pxj new crushing machine, also known as the third generation sand making machine is newly developed river gravel Sand, river gravel sand making machine. This product has: the particle size is small, uniform grain type, production capacity, hammer, long life, supporting small power change three broken for two broken, process simplification, simple structure, easy maintenance, smooth running characteristics. Equipment investment is less than 35% -50% of the traditional technology and equipment of the same size, the output efficiency is higher than the same scale of traditional technique and equipment 35% -50% (limestone, for example: a finished particle size ≤ 5mm accounted for more than 85%). Long-running and maintenance costs less than traditional technology and equipment of the same size by 35% -50%, widely used in the mecha nism of aggregate (limestone, river gravel, pebbles, granite, quartz), cement, refractory, metallurgy and other industries.
The rod mill sand making machine is widely used in the gravel industry, more traditional building sand making sand river pebbles, river gravel, sand making machine one is mainly used for the processing of feldspar, quartz, ore and other raw materials, broken . Cylinder to a certain speed, the grinding media in the friction and centrifugal force rose to a certain height to be thrown, so that the material impact on Morgan Stanley study, to achieve the purpose of sand.
Several river gravel Sand, river gravel, sand making machine has its own advantages and disadvantages, rod mill Sand discharge mostly for construction sand, while the impact crusher gradation best, requires the user to Since the situation to the selection of equipment. If you Buy Sand of river gravel, river grav el, sand making machine, consultation with the river gravel Sand, river gravel, sand making machine price, please contact the Zhengzhou Histon mechanical 0371-67816612

Cycloid reducer range of applications and installation instructions

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spreader gearbox - China Manufacturer

Thank you for inquiry my spreader gearbox, Tel:0086 21 37283520, E-MAIL:info@torkdrive.com

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(A) cycloid reducer range of applications
Cycloid reducer with cycloid pin gear engagement, the planetary transmission principle, it is usually called planetary cycloid speed reducer planetary cycloid reducer can be widely used in petroleum, environmental protection, chemicals, cement, transportation, textile, pharmaceutical, food, printing, lifting, mining, metallurgy, construction, power generation and other industries, as a driver or deceleration devices. Its unique smooth structure in many cases can replace the common cylindrical gear reducer and worm gear, planetary cycloid reducer is widely used in various industries and fields, by the majority of
Widely welcomed by the user.
(B) of the cycloid reducer using the conditions:
A cycloid reducer allowed to use the occasion of the continuous working system, while allowing the positive and negative in two directions running.
2, the input shaft speed rated rpm of 1500 rev / min for a 18.5 kwh recommendations in the input power is greater than 960 rev / min motor supporting use.
3, horizontal installati on cycloid reducer position are the horizontal position. The maximum horizontal angle of inclination is generally less than 15 ° during installation. More than 15 ° should be other measures to ensure adequate lubrication and to prevent oil leakage.
4, cycloid speed reducer output shaft can not be subject to large axial and radial forces, large axial and radial forces to take other measures.
(C) of the cycloid speed reducer when used to pay attention to lubrication:
Horizontal cycloid reducer with sump lubrication under normal circumstances, the oil level maintained in the middle of, as the oil window can, in poor working conditions, the ambient temperature can be used in high temperature circulating lubrication.
Cycloid reducer is generally used at room temperature, 40 # or 50 # mechanical oil lubrication, extreme pressure gear in order to improve the performance of the gear unit to extend the life of the cycloid reducer, we recommend using 70 # o r 90 # oil, can also work in the case of high and low temperature should re-consider lubricant.
3, the vertical installation planetary cycloid reducer confidential to strictly prevent the pump off the oil to avoid the damage of the parts of the reducer.
Refueling can spin the boot seat of the Ministry of ventilation cap to refuel. Seat lower part of the spin boot put the oil drain plug, you can release the waste oil. The speed reducer factory internal lubricant.
5, the first refueling operation 100 hours should be replaced with new oil, (and internal waste oil rinse) after continuous work every six months to replace (8-hour work), poor working conditions may be appropriate to shorten the oil change time, practice prove that the regular cleaning of the reducer and oil change (eg, 3-6 months) to extend the life of the gear unit has an important role. Should always be added in the course of lubricants.
Our newly issued reducer has been added to the lubricati ng grease, replaced every six months. Grease using lithium aluminum disulfide -2 # 2L-2 #-based grease.
(D) of cycloid reducer installation:
A cycloid speed reducer output shaft installation of couplings, pulleys, sprockets and other links do not allow direct thump, thump the gearhead output shaft structure can not withstand the axial force, free shaft end screw screwed into the screw pressure into links.
2, the output shaft and input shaft Shaft Diameter selection of GB1568-79 tie.
3 rings screw reducer only lifting gear reducer.
4, install the reducer on the basis of calibration reducer installation centerline elevation, level and its associated parts of the relevant size. Calibration mounted drive shaft concentricity should not exceed the extent permitted by the coupling.
5, the reducer calibration, available steel pads or cast iron pads, the pad at a height of not more than three, can also be used the deed iron reducer calibration should change into flat pads.
6, the configuration of the pad should be to avoid causing the body deformation, should be the basis of bolts arranged symmetrically on both sides of their distance from each other enough so that water slurry in free circulation when irrigation.
7, the irrigation of the slurry should be dense, not bubbles, voids and other defects.

2008 LED flowering streets

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128â…¹64 lcd module - China Manufacturer

Thank you for inquiry my 128ⅹ64 lcd module, Tel： +86-571- 85121224, E-MAIL：sales@tsingtek.com

http://www.china-lcdmodule.com/key-128â…¹64-lcd-module-66/

59 According to the Information Bureau of Industry and Commerce Bureau records show that, at present, the city registered

the advertising production company. Lusong District on July 1 is the industry\\ s well-known advertising street, where they

gather about 20 advertising production company. But their size is not large, the number of employees are mostly no more than

20 people.

    \"The remediation on the line, should be a \\ shuffle\\ .\" Li Junhui is a word to seek the person in charge of the world

advertising companies in the advertising production has been 23 years, the dynamics of the industry familiar with the heart.

    In 2007, Li Junhui transformation produced LED luminous characters, then the unit price per square meter up to three or

four thousand, profit is up to about 50%. Visionary customers are willing to spend the money. \"Said Li Junhui, than ordinary

billboards, LED luminous characters, LED display with color, light-emitting long-lasting, energy-saving advantages, quickly

sought after by the market.

Laser cutting machine interpretation

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Electric Shocking controller - China Manufacturer

Thank you for inquiry my Electric Shocking controller , Tel: 86-0577-86573661, E-mail: wzsldz@laserkeychain.com

http://www.laserkeychain.com/key-electric-shocking-controller-25/

 CO2 laser cutting is focusing mirror CO2 laser beam is focused on the material surface material melting at the same time with the laser beam of compressed gas to blow away the molten material, and the laser beam and materials for the relative motion along a certain trajectory, thus, form a certain shape of the kerf. Since the 1970s, with the CO2 laser and CNC technology, continuous improvement and development, has now become a state-of-the-art processing methods of sheet metal cutting industry. In the fifties and sixties as a sheet material cutting method: Plate oxyacetylene flame cutting; sheet using scissors under the bed material, forming large quantities of complex parts using stamping, one-piece vibration cut. After the 1970s, in order to improve and improve the quality of the flame-cutting incision, but also to promote the ethylene oxide precision flame cutting and plasma cutting. In order to reduce the manufacturing cycle for large stamping dies and the development of CNC nibbling and EDM technology. Various cutting cutting method has its shortcomings, the scope of industrial production.
CO2 laser cutting technology th an the other obvious advantages of the method is:
(1) cutting quality. Narrow kerf width (0.1 - 0.5mm), high precision (usually hole center distance error of 0.1 - 0.4mm outline size of the error of 0.1 - 0.5mm), the cut surface roughness good (generally Ra = 12.5 - 25μm ), kerf generally do not need to re-processing can be welded.
(2) cutting speed. Such as the use of 2KW laser power, 8mm thick steel cutting speed 1.6m/min; 2mm thick stainless steel cutting speed 3.5m/min, small heat affected zone, minimal distortion.
(3) Clean, safe, pollution-free. Greatly improved the working environment of the operating personnel. Of course, the accuracy and cut surface roughness, CO2 laser cutting can not be more than EDM; cutting thickness is difficult to reach the level of flame and plasma cutting. However, the above significant advantages enough to prove: CO2 laser cutting has been and is being replaced by part of the traditional cutting process method, especially the cutting of a variety of non-metallic materials. It is the rapid development of increasingly widespread application of advanced processing methods.
Since the 1990s, due to the development of China\\ s socialist market economy, competition among enterprises is fierce, each firm must be in accordance with their terms, the correct choice of advanced manufacturing technology to improve product quality and production efficiency. CO2 laser cutting machine technology in China\\ s rapid development.

 

Analytical electric forklift AC drive technology

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forklift fork extension - China Manufacturer

Thank you for inquiry my forklift fork extension, Tel：13989310707, E-mail: sales@steelmanattachment.com

http://www.forklift-fork.com/key-forklift-fork-extensions-150/

1, China\\ s electric forklift market prospect is broad
The modern logistics industry has become a pillar industry of national economy of the new century. It not only form the modern supply chain carrier and the basis of the value chain management, production, circulation and consumption of organic connection, speed up the process of social reproduction, and the fastest speed, best practice and optimal combination of complete goods from production to consumption areas of the transfer process to maximize the savings in distribution costs. Forklift known as \"the handling of God\" plays a huge role in the logistics field. In recent years, electric forklift will be more and more customers. But from the point of view of electric forklift market share of only 21%, compared the ratio of the proportion of European and American markets electric forklift, there are still considerable differences. This shows that China\\ s electric forklift has broad market prospects.
     2, electric forklift has a significant energy-saving environmental advantages
In addition to low noise and exhaust emission characteristics, th e many advantages of electric forklifts, in fact, the use of electric forklifts and maintenance cost relative internal combustion forklifts have a great advantage.
The use of cost: the cost of consumption of electrical energy consumption costs than diesel or liquefied petroleum gas. If our forklift trucks with a payload capacity of three tons to do, each shift of a diesel internal combustion forklift truck diesel consumed (according to each frequency of consumption of 40 liters of diesel fuel, vehicles per hour, 60 VDI cycle consumption of 5.5 liters of diesel to calculate a) costs about 196 yuan (4.9 yuan per liter of diesel). A 3-ton electric forklift is 80 volts 500AH battery (the battery storage of electricity for 8 × 500 = 40 kWh), an operating frequency (80% discharge, in accordance with the 120% supplementary charge ratio, need to consume electricity is about 40 degrees) costs about 140 yuan ($ 3.5 per unit in accorda nce with the current industrial electricity prices). Can save 56 yuan per day, calculated in accordance with 250 days a year, you can save $ 14,000 a year in energy costs. If you use five years to calculate, you can save $ 70,000.
Electric forklift due to its operational control is simple, flexible, operating strength of its operation is relatively internal combustion forklift trucks in terms of light a lot of its electric power steering system, the acceleration control system, hydraulic control system and brake system is controlled by electrical signals, greatly reducing operator\\ s labor intensity, so that a very big help for improving its efficiency and accuracy of the work.
Maintenance costs: maintenance cycle in terms of length of two to three times of electric forklift maintenance cycle internal combustion forklifts, usually internal combustion forklift maintenance cycle up to 500 hours of work, and electric forklifts have been able to reach more than 1000 h ours maintenance cycle. Maintenance content, electric forklift maintenance than internal combustion forklifts, maintenance simple, usually as long as the parts of the lubrication of some joint activities such as the bearing of the door frame, turn to other bridges to check the clean up to every 2000 or 3000 hours to be replaced once the hydraulic oil, gear oil and hydraulic filters, other materials are very limited. Other than internal combustion forklift truck lubrication for up to 500 hours (usually about every 300 hours) is necessary to replace the engine oil and oil filter every 1000 hours to replace the hydraulic oil, engine oil, transmission oil and oil filter device. Also replace the belt (engine timing belts, generator belts, etc.). Or three tons forklift example, according to the calculation of operating 2000 hours per year, the maintenance costs of the internal combustion forklifts 3,000 to $ 4,000 (just the cost of materials), while the electric forklift maintenance costs $ 1,000 to $ 1,500 (cost of materials) .
Maintain the time required by the maintenance of internal combustion forklifts electric forklift maintenance interval cycle is relatively long, at the same time, the time required of each maintenance than internal combustion forklifts, so significant savings in labor costs, maintenance needs, in fact, more of this substantial forklift downtime is greatly reduced, so that the economic benefits of improved forklift efficiency is difficult to calculate.
Electric forklift battery service life of 1,500 charge-discharge cycles, converted into the forklift working hours of 10,000 hours, the same which is also equivalent to an internal combustion forklift engine overhaul time, so when the electric forklift battery replacement cost and engine overhaul costs are relatively close, but replace the battery faster than the speed of the engine overhaul (or replacement of the engine speed) is much faster, but also reflect on the advantages of time efficiency.
Thus, while we make in the purchase of electric forklift spend more expensive than the same load capacity of internal combustion forklifts to be 30% higher, but the total cost of using directly measured data can be seen, in fact, the total cost of electric forklift than the internal combustion forklift trucks is much lower. The one hand, more and more the forklift indoor operation, such as vehicle exhaust emissions requirements getting higher and higher. Europe and the United States and other places have strict rules, the indoor ban on the use of internal combustion forklifts. Even now in the country\\ s domestic laws and regulations have not yet started to strictly limit the internal combustion forklifts are used indoors, but compared to internal combustion forklifts, electric vehicles, low-noise, no exhaust e missions advantages have been recognized by many users. In addition, selection of electric forklift trucks, there are some technical reasons. The rapid development of electronic control technology makes electric forklift operations to become more and more comfortable, the broader the scope of application, more and more solutions to the logistics, such as electric pallet trucks, electric stackers, forklifts, three narrow channel forklift such as internal combustion forklifts, electric forklifts to solve these problems, in particular, played a very important role in warehousing and logistics solutions. These in terms of demand for electric forklift market growth rate will be faster and faster, electric forklift market share will be growing.
     3, electric forklifts become more perfect towards the practical
Electric forklift vehicle power supply, power, motor-driven wheel driving, in line with road traffic, the requirements of safety regulations. The advantages of electric forklifts is: it does not pollute the atmosphere emissions of harmful gases, even if the power consumption are translated into emissions from power plants, except sulfur and particulates and other pollutants were also significantly reduced due to power plants are mostly built away from populated dense city, less damage to humans and the plant is fixed, the concentration of emissions, to get rid of various harmful emissions easier, also has the relevant technology. Electricity from a variety of primary energy to obtain, such as coal, nuclear, hydro, the lifting of the depletion of oil resources has become increasingly worried about. Charging electric forklifts can take advantage of evening electricity trough when surplus electricity, day and night can be fully utilized, and greatly improve its economic efficiency power generation equipment. Some studies have shown that After smelting, the same crude oil sent to the power plant into the battery, rec hargeable, battery-powered forklift, its energy efficiency The refined into gasoline, and then the gasoline engine-driven forklift, so conducive to saving energy and reduce carbon dioxide emissions, it is these advantages, research and application of electric forklift become a hot topic in the forklift industry.
The difficulties of electric forklifts is too little energy stored in the battery unit weight, and also more expensive due to the electric forklift battery, not any form economies of scale, so the purchase price is more expensive.