17Apr

Transmission machine classification

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Transmission machine classification

In the underground tunnels of the mine, mine surface transportation system used in the mine and concentrator, widely used in conveyor belt. Trough role, flat-shaped roller, spherical roller bearings, buffer role. Plastic with oil, acids, alkalis and other starches, but slippery for the weather and poor adaptability, and aging.
Its task is, the conveyor belt in order to achieve the necessary tension to avoid slipping on the drive pulley and belt pulley, to ensure that the scoping.
Belt Conveyor is the machinery of a friction material for transportation in a continuous manner. The material temperature not exceeding 50 ° C. In each reel (tape the corners of the drum 210 ° to 230 °), dual-role (including angle to 350 °) and drum (for electricity). It is a granular material transport, and also in parts of the supply of goods. Available for large inclination transport patterns rubber band. For horizontal or inclined transportation transportation. Rubber band for the work of the ambient temperature between -15 to 40 ° C. trough roller (2-5 roller) bearing supporting branch, for the transfer of granular materials, aligning roller, the set in a horizontal position to prevent the deviation; buffer role of the object material installed reducing the impact of the material on the tape. Apply it, the material in the transmission line feed point of the first to the last sampling point between the formation of a method of the provision of materials. In addition to the pure material handling, may also meet the requirements of the process in the various industrial enterprises generated in the process, the formation of the rhythm of the flowing water homework pipeline.
(1) conveyor belt. Joint funding from the conveyor belt, roller, roller and drive, braking, train, bending, loading, unloading, cleaning equipment, such as the composition. Upward movement of the granules inclination 12 ° to 24 °. The drive rollers are the main components of the power transmission.
(2) drums. In individual drum (band, the corners of the drum 210 ° to 230 °), double-roller (including angle to 350 °) and drum (for current). Therefore, the conveyor belt widely used in modern industrial enterprises used.
Conveyor belt by the drive belt tensioner in the central architecture and roller traction and structural components to continuously transport the scattered and fragmentary material or products.
(4) roll. Together with two rubber bands and plastic. The bandwidth is the main technical parameters of the conveyor belt.
3 clamping device. Pulley and idler pulley.

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17Apr

Common screw conveyor accident prevention

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Common screw conveyor accident prevention

Follow these accidents are common in spiral conveyors:
1 electricity in building site secure, leak phenomenon whereby electrical shock
2, construction abuse, breach of employment due to injury
3, on the device itself, protection device installation problems, what risks to operators

After the accident, a safety engineer at work, focusing on the following elements:
One makes, from on the spot, first check the insulation and grounding of electrical equipment is good, belt protector of the round is completed
2, all types of concrete mixers, should unidirectional rotating mix. Hopper with insurance hook, safety hook must be set down
3 should fill in a flat, concrete mixing plants and to be installed on machines solid smooth
4, to begin feeding, especially after the mechanical operation of the feed mix, stir when it suddenly stopped halfway, his material should be removed first when you reboot, not material containers must be unloaded start
5, screw conveyor hopper bottom for people, not operator can not operate machinery.

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17Apr

After work on the spiral conveyor belt maintenance

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After work on the spiral conveyor belt maintenance
1, check the surface of the conveyor belt, pull out if there was to be replaced in time.
2 long disables the device, not on stock in the hopper, bin, and clean water.
3, check the sound mixer and liner wear condition when replaced, should be fixed if loose screws in a timely manner.
4, cement-bearing need to be careful to prevent moisture, that the cement hardening and freezing.
5 Completion and maintenance of facilities, in accordance with the warranty regulations. In accordance with the requirements referred to below.
6, operators receive post-leaving after work, you should use the service door and windows, shut door lock operation.

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17Apr

The principle of capacitive level gauge in the bulk cement tank and installation

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The principle of capacitive level gauge in the bulk cement tank and installation

Bulk cement tank capacitance level indicator works form a capacitor inserted between the electrodes in the silo and the silo wall, when the bulk cement tank caused material level changes by the change in capacitance, the converter circuit, the control signal. Secured the set of continuous change, the capacitive level meter do continuous level measurement can be used as limit switches, used, depending on the size of his reach and control the various ways in silos.
Bulk cement tank level display combined installation considerations and features:
A measuring point on the right side, generally away from the wall about 1.5 m in order to avoid the filling opening;
Fused probe and the bottom of the solid insulator and isolation, if the settings of the suspension, the correct weight, to maintain the vertical;
Converter, electrode holder and the housing securely;
Bulk cement tank merged level features:
Bulk cement tank fused level device functionality can be achieved only with a continuous measurement of material and upper and lower limit alarm requirements can control;
Bulk cement tank type material is blended on-site motor is completely sealed, no moving parts, components, performance, high accuracy;
3, requires only a single core cables, wiring is easy as long as the adjustment in the control room on the principle of the signal.

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11Apr

Information about mixing plants Dust Collector

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Information about mixing plants Dust Collector

Electrostatic precipitators are often used in boilers and industrial manufacturing plants. Mainly in mixing silo dust collector dust factory packed powder-like substance. Similarly, filters remove dust bin of cement tank equipment. They saw dust collection equipment in the industry. Mixing system dust separation unit in dust from waste gases or dust collection equipment Duster. Cement silo top dust collectors exhaust common manufacturing facilities, Silo Top Dust electrostatic precipitator performance of cement bulk LPG gas, which can be treated by the dust resistance and loss of efficiency terms. Applies in the same time, dust-collector price, operating and maintenance costs of the length of life, ease management, important factors in their performance. Cement Mixer Dust silo top filter selection Germany imported filter media 14 filters. Standard spare parts, easy operation and maintenance, significantly reducing dust pollution pollution on the environment, to meet national environmental standards, is the essential property, plant mix. Mainly for silo load different types of powder-like substance from dust.
Mixing filter dust collector maintenance includes:
Check to see if the line is clear before using.
Bulk cement truck should the tank before and after the ash to be enabled for 2-3 minutes vibration.
Alarm if the alarm to prevent the cement tank, stopping processor to ashes and dust damage.
If bad sound of the wind, make sure that the dust filter is blocked if the block should be cleaned in a timely manner.
Before cleaning the filter, in line with a 2-3-road event, when combined deformation filter flushing.
When cleaning, you need to filter before installing.
After repeated washing, filtration, was dusting the purpose achieved, buy a new cartridge, and aim for maximum dust time.

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11Apr

Powder valve selection

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Powder valve selectionpowder  Valve is an important part of the filter products, its quality determines the overall efficiency of the dust collector, so I decided that’s a good powder of the butterfly valve is a very important thing. At the time of purchase, depending on the purchase.
By adjusting the parameters of media selection valves: during production, the mean parameters such as pressure, flow, which make in accordance with the requirements of the technological process, a control mechanism on the above parameters need to install modified. Adjusting the mechanism of the major works, is by the valve flap and valve area of ​​information flow between the valve and the valve seat to reach the purpose of adjusting these parameters. This class referred to as the valve control valve, which is divided into relying on the media itself is called self-drive, the driven control valve pressure relief valve, control valves, and other, where one of the leading-driven calling him to give control valves, electric control valve, Pneumatic control valve and hydraulic control valves, etc..
Reflux valve selection by preventing the media: the role of this type of valve is the only medium to flow in one direction and block flow. This valve is normally automatically, fluid under pressure in a direction to open valve when the liquid flow in the opposite direction, cut off by the weight of the liquid pressure and valve seat disc on to the information flow. Check valve is a valve of this kind, it covers the opening type check valve and lift check valve. Check valves have a hinge mechanism, a valve such as a flap door free angled onto the seat surface. To ensure that the CD gets to the seat face each niche, CD designed swivel hinge, so that the target on a swing and a real disc, hard contact with the seat has enough space. CD can all be made of metal or metal insert in the synthesis of leather, rubber or cover, depending on performance requirements. Check valves in the fully open position, fluid pressure, almost freely, is through the valve pressure drop is relatively small. Lift check valve disc is located on the valve body to seal valve seat surface. In addition to the CD is free to this valve, such as valve, for the rest to lift liquid pressure valve from the valve seat seal surface lift, carry m back to the fact that the disc will be truncated to the seat and the river. According to working conditions, electromagnetic valve disc an all-metal structure, or is the valve flap shape of the inserted rubber or rubber ring.Ball valve, Check valve lift of the fluid channel is narrow, so lift type check valve pressure drop is greater than the orifice flow check valve type, valve type and the opening of a few limitations experienced non-return valve.
Powder to buy other aspects of the butterfly valve in the future, we will show you.If you buy you have to respect different, are compensated according to media-break natural selection valves:
Shifter is used as a media to run when in full flow as a whole express, media of the minimum pressure drop at this time. Gate valves are normally used do not require frequent opening and closing, and keep the door fully open or fully closed. Shanghai Star OU slide valve is not used for regulation or restriction. For high-speed media flows can partially open gate state gate-induced vibration, vibration, the sealing surface of the gate and seat damage suffered Throttle Gate washing medium. Form from the structure, the main difference is that the shape of the seal element. Depending on the shape of the sealing elements are often divided into different types of gate valves, wedge type, such as flood gate valves, parallel slide type, dual-valve, V-type double-gate gate. Wedge gate valve and is the most commonly used forms of the parallel type gate valve.
Valve and valve seat seal surface on the axis vertical. Diaphragm valve opening or closing of the relatively short trip, very reliable and has cut off the action, this valve is used as a cut or adapt to and reducing media. If the valve is open, it is no longer between the sealing surface of the valve seat and valve contact, very reliable and has cut off the action, this valve is used as a cut or adapt to and reducing media. Once the shut-off device is opened, it is no longer between the sealing surface of the valve seat and valve in contact, sealed it surface less mechanical wear because repair most of the valve seat and valve easier or replace the seal components on the faucet must lie from the pipeline as a whole, the valves and piping welding apply once. Dig media by valve flow direction of consents to allow the valve to flow more than other valves.
Butterfly butterfly valve plate in a pipe diameter installed. Butterfly valve body within the cylindrical channel, disc disc rotate about the axis of rotation angle is between 0 ° ~ 90 ° when rotated 90 °, the valve is at full speed. Valve simple structure, small size, light weight, only a small number of parts. And just open right turn 90 degrees to quickly and close, easy operation, while the fluid power valves have good properties. If the valve is fully open position, butterfly flowing media thickness of the resistance only the valve housing, through the valve pressure drop is very small, it has good flow control.
Resilient sealing butterfly valve, metal sealed two kinds of type a, b, C. Resilient seal valves, seals can be attached or embedded in the body at the periphery. Shanghai Star OU valve sealing valve used for the production, longer than the elastic sealing valves of life, but it is difficult to seal completely. Metal seals can adjust to higher operating temperatures, elastic seal has a temperature limit of the defect. When used as a traffic-control valve, valve sizes and types is the right choice of major. Structural principle is particularly suitable for the manufacture of large diameter butterfly valve valve. Butterfly valves in the oil, gas, chemicals, water treatment, and is not only widespread in the industry, but also for water-cooling system cogeneration plant.
Common shut-off and control valve, the insert and flange type butterfly valve butterfly valve in two ways. Wafer type butterfly valves are double head screw connection between two pipe flanges, piston-valve flange type butterfly valves are valves with flange, with the ends of the screws on the valve on the pipe flange flange.
Further developed the ball valve is the plug valve. It rotates 90 degrees using the same measures, the body is different tail is round, round through-hole or channel through the axis.When the ball rotates 90 degrees, should be a bullet point to the inlet and outlet, so cutting off the flow. Ball valves rotate 90 degrees only need to use and very small spin moment are closed.Full equality of body cavities to media resistance is very small, continuous flow path. Shanghai Star OU holds best to use direct and close the ball valve pros, but recently the development of ball valves have been designed so that it has a throttle valve and flow control. Main features of the ball valve itself is compact, easy operation and maintenance, suitable for water, gas, solvents, acids and other popular media, the media, as well as poor working conditions, such as Oxygen, hydrogen, ethylene and methane. Ball valve body may be a whole, or they may be combined.
We provide you with purchase of powder have some understanding of the valve, ensure you buy a product for you.

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11Apr

Bag mixing station dust collector pressure test standards and filter conditions

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Bag mixing station dust collector pressure test standards and filter conditions

Bag filter pressure drop is the gas pressure drop in imports to exports from the Dust Collector or resistance. Pressure drop of the dust bag depends on three factors: the structure of the pressure loss. Pressure drop filter. The filter property assigned. Filter dust accumulated on the pressure loss.
 dust Collectors bag mixing plant operating pressure: pocket pressure before and after the filter and fan unit is based on the static pressure of the value and location of the plant depends bag design pressure. Filtration rate is an important factor in design, and select the case, it is defined as the velocity filters gas filters or filter air flow and filter area. Represented by m / min units. Bag type filter dust collector mix station has determined that filtration rate formula for its processing of the selected air hanging Size: Q = vxsx60 (m3 / h) to give the Q-V air filter processing wind speed (m / min) s total filter area (m2) indicate: filter area (m2) = processing air (m3 / h) / (filtering velocity (m / min) X 60) Case Type Mix Station Dust Collector Filter speed hair filter and net-filter has speed of at , so-called filtration rate refers to the volume divided by the area of ​​the bag filters, the net filtration rate refers to the capacity divided by net air-bag-filter dust collector area as a whole. The cleaning effect and the ability to work to improve design your bag in a number of rooms, each room has a main stop valve control room in a filtered condition or filter condition. If you make a room for cleaning or repairs necessary to the main valve to close and stop, filter status, air power will be borne entirely by the other chamber, is another area of ​​the room, the filter net filter area. In other words, the net filtration surface area is less filtering needed to maintain the operating dust filtration area equal to the sum of the number of rooms and number of maintenance.

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11Apr

Select cement tank is a necessary step for the individual user to the purchase and use of

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Select cement tank is a necessary step for the individual user to the purchase and use of
Select cement tanks for each user, a necessary step prior to the purchase and use, but not every user’s attention to this step, I believe many users feel more important to use it as a choice, but I do not think so, because the choice of a good suitable for the cement truck, not an easy task.
We must first understand the nature and style of the cement truck: to cement tank may, consistent with the shape divided cement divided into bulk tank and the sheet (with) two types of cement tank, but may, in accordance with the capacity to: Cement tank 30T, 50T cement tank, 60T cement tank cement tank 80T, 100T cement tank, the 120T cement tank, 150T cement tanks, etc., is usually done in our factory 200T down over cement tank, we need to live production. As a professional manufacturer of cement tank, we can also help the user tailor-made satisfactory cement tank.
There are a range of manufacturers, cement tank, I believe that all users were compared on the lookout for before buying a lot of manufacturers, regardless of price or product evaluation is a lot to do. What do a discounted price under a misconception, since the producers, we recommend that users go to the manufacturers to control as much as possible to do before you buy, not to lose more.
Cement tank is a sealed container can be used to bulk materials, storage of materials, including cement, fly ash, grain and others. Cement tanks and cement jars, bulk cement tank, cement silo, and the composition of the steel tank, ladder, railing, legs, level indicator, pressure relief valve. Known due to the large size of the cement tanks, transport and relatively easy to consider some users, the rates you will not need ask leg, or remove the legs?

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17Feb

Use of the screw conveyor

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Use of the screw conveyor
Screw Conveyor Pneumatic diaphragm pump through the particle and flow adjustable pipe blockage of the rest until smooth. Content with a different user’s needs.
1 is driven, with air flow with back pressure (flow resistance) of the change and automatically adjusts the appropriate application in the highly viscous liquid. This is due to the shearing force of the diaphragm is the physical effect of the material low.
Pneumatic pump reliable and capital, such as fuel, gunpowder, explosives delivery: First, that the ground does not make sparks in an explosive atmosphere, top, second, no heat generation in the work results in the machine overheating;, the fluid does not overheat due to the membrane smallest stir the liquid.
3, is another small size diaphragm to move easily, without foundation, the soil is extremely small, easy to install and the economy. With compressed air as an energy source for a variety of corrosive liquid, with particles of liquid, high viscosity, volatile, flammable, poisonous liquid can be pumped optical fatigue. Air operated diaphragm pumps have four kinds of material: plastic, aluminum, cast iron, stainless steel. Located in a variety of special occasions, for pumping a conventional pump can not pump the medium, satisfied results are obtained.
Photographische materials, flocculation liquid 4 may, for the transport of the chemical nature of chaos in the liquid, such as are used. Or some tests to ensure that no contamination in raw materials.
5, the dangers of the erosion of material handling, membrane material with the outside world completely separated. The membrane of claim were various liquid media nitrile rubber, chloroprene rubber, fluorine rubber, PTFE, polyethylene 46 is ethylene.
6, the bad side, such as construction sites, industrial waste water emissions, because the complex composition of the contaminants in the sewer pipes to easily plug so that the formation of excessive stress on the pump motor fever vulnerability. Centrifugal pump operating point, the water is good when set as a benchmark for the slightly higher viscosity fluid, which support the reduction or the frequency, is the capital there was a big step forward for the gear pump in the same predicament. The pump can be used as the mobile material.
The air-operated diaphragm pumps with the above properties, diaphragm since the founding of the world will gradually penetrate into the markets of other pumps, and, according to which a department. The air-operated diaphragm pump is a new transport aircraft, and is home to the newest odd one pump. Such as: painting, ceramic membrane has, according to the absolute dominance, while in some other industries, such as environmental protection, wastewater treatment, construction, waste water, fine chemicals, is expanding its market share, and have other pumps can not replace the position.

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15Feb

Cement silo (Cement tank) traffic problems in the powder process

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Cement silo (Cement tank) traffic problems in the powder process

With the rapid development of the comprehensive strength of China has entered a period of specific goods to the rapid development, the quality of the concrete production
Improve the reduction of production costs is committed to improving the competitiveness of enterprises. In recent years, high-speed rail project, the implementation of the metro project, the quality of commercial production of concrete faced with new challenges, but to support some of the problems of institutions in the concrete production of goods, we summarize here:
A cement truck (stock) powder feed slower reasons:
Fault phenomenon: screw conveyor feeding is very slow, feeding more than two minutes, during normal eating less than 20 seconds.
Analysis: The most important factors leading to poor cement storage material and auger damage. Cement tank (heading) powder under the material poor performance in the form of powder trapping cement storage material caking the feed, discharge butterfly valve open by a lack of small powder container materials. The screw conveyor helical blade deformation damage can not be normal transport.
Process:
An open arc circuit breaker blows.
2, check the powder reservoir discharge line throttle valve opening and the throttle to full open position.
3, check the boxes of materials Powder exit caking.
4, Check auger blade deformation, deformation such as the removal of the correction or replacement.
, Conveying the powder into the vessel to remove the gray tank top
Fault phenomenon: The process of bulk cement truck to gray powder cans, cement tank-top pumping with gunpowder.
Analysis: conveying powder of a cement tanks by compressed air transmission, the compressed air to the powder to the cement storage over the tank top dust filter in the air, such as dust filter blockage, then can not the compressed air in time, are to produce “pressure” discharged , the safety valve when the pressure reaches the top of the tank safety valve opening pressure opens, compressed air with the powder into the atmosphere through the safety valve, remove the gray phenomenon. Also because of the level meter failure, continue to feed the powder to be filled, remove the gray tank-top phenomenon.
Process:
One, check the tank top, dust filter and clean up.
, Once exposed to ash phenomenon are clean, have the powder around the safety valve to prevent the powder dry in the rain agglomeration plug the safety valve.
3, as a result of the powder packed to take to the gray, you must check the gauge and material full of alarm device reliability.

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