2014年4月29日星期二

The Operation method of exhaust valve

When the water began to pipe, plug head stuck in the open position, for a lot of exhaust, when the air is exhausted, the valveof water, the floating ball is floating, drive plug to the closed position, to stop the gas tube, when the normal transport, such asa small air gathered to a considerable extent on the valve, the water level dropped valve, floating ball decreases, the airdischarged from small holes, when the pump stops, the water flow in a pipe with air or when the negative pressure tube, thenplug the rapid opening, air suction pipeline, to ensure complete.

The single ball type composite exhaust valve (water and use)

Pressure rating: PN10

Nominal diameter: DN25-100mm

(DN25 as the thread, the rest is a flange type)

Separation type composite exhaust valve (water sewage share)

Pressure rating: PN10

Nominal diameter: DN250-300mm

Integral double ball type composite exhaust valve

Pressure rating: PN10

Nominal diameter: DN250-300mm.

Precise Work Stage

Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China.

Our products are used in many different industry sector, like in automation engineering, drive engineering, conveyor technology, assembly and handling technology, Stainless Steel Chain，packaging industries, the beverage,Timing Belt Pulleys， food and medical engineering, Chain guides，pharmaceutical production, and laboratory equipment.

Chinabase is able to offer custom, cost-optimized solutions in accordance with customer drawings - such as ready-to-install machine parts and profiles - in addition to our standard products. Our internal Application Technology department and field staff are happy to provide free advice on custom solutions.

What is the classification of exhaust valve

Classification

Heating type

Floor heating is a set of system, from the connection fixed heating coil to the distributor and the automatic exhaust valve and pipehas a stringent process requirements, in the winter heating,heating the user first needs to open the exhaust, so we need to use the exhaust valve exhaust. Heating exhaust valve installed at the highest point of the system, used to release the heating system and the cavitation of the water supply pipe valve.

Trace type

In general, dissolved air containing about 2VOL%, in the deliveryprocess, the air from the water being released, gathered at thehigh point of the pipeline, the formation of air bag (AIR POCKET)make water difficult, system capacity can therefore decreased by about 5-15%. The main function of this trace is to rule out the exhaust valve of this 2VOL% of dissolved air, and suitable for installation in high-rise buildings, plant area piping, small pumping stations to protect or improve water system efficiency and saveenergy.

Single rod (AETV SIMPLE LEVER TYPE) trace exhaust valve, a similar oval body, internal parts, including all of the floating balllever, a lever frame, seat and so are 304S.S stainless steel, the internal use standard exhaust aperture 1/16 ", suitable for up to PN25 working pressure environment.

The main specifications:

Nominal diameter: DN15-DN25

Nominal pressure: PN10 PN16 PN25

Rapid type

Large diameter exhaust valve exhaust valve < > is applied to an independent heating system, heating system, heating boilers,central air conditioning, floor heating and solar heating systems,exhaust pipe. Because water is usually dissolved some air, and the air solubility decreased with the increase of temperature, so the water gas in the circulating process gradually separated from the water, and gradually together forming larger bubbles and evengas column, because of the added water, so often the gas is generated. This derives the exhaust valve of the term, in daily lifeto solve many problems

Composite

This valve is a cylindrical body, it is mainly composed of a group of stainless steel ball (STAINLESS STEEL BALL), rod (FLOATARM) and a plug (POPPET). The valve installed at the pumpoutlet pipe line function, to exclude a large number of the air tube assembly, or gathering places higher in the micro pipeline airemissions to the atmosphere, to improve the pipeline and pump efficiency, and once a negative pressure in the pipe occurs, thevalve quickly inhaled air, damage in order to protect the pipelinebecause of negative pressure production.

Tensioning Roller Sprocket

Sewage composite exhaust valve principle and water composite exhaust valve is the same, but the structure is changed, the valvelever mechanism is lengthened, slightly modified, so that dirt only accumulates in the lower part of the valve body, does not affect the exhaust, not Water Leakage.

The main specifications:

Pressure rating: PN10

Nominal diameter: DN50-200mm.

Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. We can supply a full-range of power transmission products, such as chains, sprockets and plate wheels, pulleys, gearboxes, motors, couplings, gears and racks. Our product range also covers locking assemblies (clamping elements/locking device), Rod end manufacturing，taper bushes, QD bushes, bolt-on hubs, Fluid Couplings，torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes. Our products are used in many different industry sector, like in automation engineering, drive engineering, conveyor technology, assembly and handling technology, packaging industries, the beverage, food and medical engineering, pharmaceutical production, and laboratory equipment.

2014年4月28日星期一

Introduces the principle of exhaust valve

Exhaust valve used in an independent heating system, heatingsystem, heating boilers, central air conditioning, floor heating and solar heating systems, exhaust pipe. Because water is usuallydissolved some air, and the air solubility decreased with the increase of temperature, so the water gas in the circulating process gradually separated from the water, and graduallytogether forming larger bubbles and even gas column, because of the added water, so often the gas is generated.

Principle

When the gas overflow in the system, the gas will be along the pipeline to climb, finally gathered at the highest point of the system, while the exhaust valve is generally installed in the highest point of the system, when the upper air into the exhaustvalve chamber gathered in the exhaust valve, with the increase of the gas in the valve, pressure rise, when the gas pressure is greater than the system pressure, the gas will decrease the water cavity, float together with the water level dropped, open the exhaust port; gas drained, the water level rises, float will also rise,closing the exhaust port.

Rod end manufacturing

Similarly, when the negative pressure in the system, the water in the valve chamber down, the exhaust port to open, because the outside atmospheric pressure than the system pressure, so the atmosphere will enter the system through the exhaust port, to prevent the harm of negative pressure. If the valve cap tighten the exhaust valve on the valve body, exhaust valve to stop the exhaust, under normal circumstances, the valve cap should be in the open state.Exhaust valve can also be used to cut off valve matching,facilitate the maintenance of exhaust valve.

China Gears and racks manufacturer, we can supply: Spur Gears, Bevel Gears, Worm Gears, Helical Gears, Automobile Gears, Agricultural machinery gears, Spiral Bevel Gears, Helical Bevel Gear, Rack

To define the parameters of the pneumatic valve

Pneumatic valve is driven by compressed air valve. Clear only when the pneumatic valve procurement specifications, type,working pressure to meet the procurement requirements of the practice, in the current environment of market economy is not perfect because the pneumatic valve manufacturer for theproduct competition, each are in the pneumatic valve under the concept of unified design, with different innovations, formed theenterprise standard and products of their own personality.

Parameter definition

Nominal diameter

Nominal diameter of said the symbol DN, is the general caliberpipe and pipe accessories. The same nominal diameter of the tube and pipe accessories can connect with each other, with interchangeability. It is not a real sense of pipe diameter or diameter, although its value is closer with pipeline diameter or equivalent, in order to make the pipe, tube connection sizeuniform, with nominal diameter (also called nominal diameter,nominal diameter).

For example, according to the thickness ofwelded steel pipe can be divided into thin-walled steel, general steel and thicker steel. The nominal diameter is not a diameter,not diameter, but the approximate a diameter of ordinary steel pipe nominal size. Each of nominal diameter, corresponding to an outer diameter, the diameter values vary with thickness. Metric mm nominal diameter can be said, also available in English, said.Piping accessories is also expressed with nominal diameter,meaning with tube.

Linear Bearing

Nominal pressure

Nominal pressure said the symbol PN, the maximum working pressure allowed when applied at a certain temperature. Control valve on the carbon steel body, to allow the maximum working pressure below 200 ℃ application; for iron body, to allow the maximum working pressure below 120 ℃ application; control valve on the stainless steel body, to allow the maximum working pressure below 250 ℃ application. When the t. When the temperature increases, the body of the pressure will be reduced.For example, the nominal pressure 6.4MPa (PN64) carbon steelfor pressure control valve, 300 ℃ for 5.2MPa, 400 ℃ with a pressure of 4.1MPa, used for pressure at 450 ℃ for 2.9MPa.Therefore, to determine not only the nominal pressure control valve according to the maximum working pressure, also according to the maximum operating temperature and material characteristics, rather than simply meet the nominal pressuregreater than the pressure of work.

Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China.Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, Lifting Chain,QD bushes, bolt-on hubs, torque limiters,Chain guides, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes.

2014年4月27日星期日

The Daily maintenance and general requirements of pneumatic valve

Routine maintenance

1.Body (including the variable speed transmission box) inside and outside, we should first shot blasting sand blasting, seek non-toxic powder electrostatic spraying epoxy resin, thickness of 0.3mm or more. Large electrostatic spraying non-toxic epoxy resin valves have difficulties, should brush, spray similar to non-toxic epoxy paint.

2.The valve body and valve plate all parts of a comprehensive anti-corrosion requirements, on the one hand immersed in water will not rust, do not produce between two metal electrochemical corrosion; two aspects of smooth surface to reduce drag through the water.

3.Epoxy resin valve body or anti-corrosion paint health requirements, should the appropriate authority of the organs of the inspection report. Chemical physical properties should meet the relevant requirements.

Requirement

1.The specifications and types of pneumatic valves, piping design documents should be consistent with requirements.

2.The model pneumatic valve should be specified based on the national standard code requirements. If the enterprise standards,should indicate the type of instructions.

3.Pneumatic valve working pressure ≥ pipeline requirements,work pressure, without affecting the price of the premise, the valve can withstand the working pressure should be greater thanthe actual pipe work pressure; any one pneumatic valve closure conditions should be able to withstand 1.1 times the working pressure valve without leakage; valve open position, the valve body should be able to withstand two times the working pressure valve requirements.

Basic Rubber Tensioner

4.Pneumatic valve manufacturing standards, we should explain the basis of national standard number, if the enterprise standards,procurement contracts should be attached to business documents. Pneumatic valve standard GB, American Standardand Japanese standard three specifications.

5.The complete pneumatic valve is described including its size,material, connection mode, and operation mode (where the actionis divided into 1: 2: double acting, single action).

Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. Our products are used in many different industry sector, like in automation engineering,Stainless Steel Chain, drive engineering, conveyor technology,Tyre Coupling,assembly and handling technology, packaging industries, Timing Belt Pulleys,the beverage, food and medical engineering, pharmaceutical production, and laboratory equipment.

China Gears and racks manufacturer, we can supply: Spur Gears, Bevel Gears, Worm Gears, Helical Gears, Automobile Gears, Agricultural machinery gears, Spiral Bevel Gears, Helical Bevel Gear, Rack

The Method of operation of pneumatic valve

Pneumatic valve: the valve with compressed air drive. Clear only when the pneumatic valve procurement specifications, type,working pressure to meet the procurement requirements of the practice, in the current environment of market economy is not perfect because the pneumatic valve manufacturer for theproduct competition, each are in the pneumatic valve under the concept of unified design, with different innovations, formed theenterprise standard and products of their own personality.Therefore in the pneumatic valve procurement a more detailed technical requirements, coordinating with manufacturers to reach a consensus, as the pneumatic valve procurement annex to the contract is necessary.

Method of operation

1.Pneumatic valve operation of opening and closing direction, all should be clockwise closing.

2.As the pipe network in the pneumatic valve, often manually opening and closing, opening and closing speed should not be too much, is large-diameter valves should also be within 200 - 600 rpm.

3.In order to facilitate opening and closing operation of a person,the plumber pressure conditions, the maximum torque should open and close to 240N-m.

4.Pneumatic valves open and close operation should end mortise and tenon, and the size standard, and for the ground, so that people can be directly manipulated from the ground. With a wheel valve does not apply to underground pipe network.

5.Display panel pneumatic valve opening and closing degree

The pneumatic valve opening and closing degree of the scale line,should be cast in the gearbox cover or change the direction of the display after the disc casing, all for the ground, wire brush on the phosphor scale, a striking;

Direct needle plate material used stainless steel plate in the case of better management, otherwise, painted steel, do not use aluminum leather production;

Timing Belt Pulleys

The indicator needle striking, reliable fixation, accurate adjustment when opening and closing, it should be to rivet lock.

6.If the pneumatic valve buried deep, operation mechanism and display distance from the ground plate is greater than or equal to 1.5m, should be provided with facilities for long pole, and the fixed rate stability, so that people to observe and operate from the ground. That is to say, the pipe network in the valve opening and closing operation, should not go down operations.

订阅：评论 (Atom)