Drain valve


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Time: 3th, Mar, 2014

Introduction the mechanical of Drain valve



Mechanical type, also known as float type, is the use of steam condensate and the density difference, by condensation of water level changes, so that lifting the float valve to open or close the drive, to achieve the purpose of blocking water vapor. Mechanical type of trap the undercooling is small, is not affected by the working pressure and temperature changes, water that row, where no water heating equipment, heating equipment can achieve the best heat transfer efficiency. The maximum back pressure rate of 80%, work of high quality, is the ideal trap production process heating equipment.

Mechanical type traps are free floating ball type, free semi floating ball type, lever floating ball type, inverted bucket type etc.

1.Free floating ball type steam trap:

Free float type trap is simple, only one moving part within the fine grinding of stainless steel hollow float, float is both open and close parts, no wearing parts, long service life, internal YQ hydrophobic valve with automatic air exhausting device, Y series is very sensitive, can automatically discharge air, the quality of work high.

Equipment has just started work, the air inside the tubes through the Y series automatic discharging exhaust air devices, low temperature condensate into the trap, the condensate level rises, float up, the valve opens, the rapid discharge condensate, steam soon into the equipment, equipment rapidly warming, temperature sensing liquid automatic air exhausting device of Y series expansion, automatic air exhausting device closure. Trap begin work, with the condensate liquid level float movements, gas drainage resistance. Free ball float type steam trap valve seat total in the level below, to form a water seal, no steam leakage, energy saving effect is good. Minimum working pressure 0.01Mpa, from within 0.01Mpa to the highest pressure range is not affected by temperature and pressure fluctuations, continuous drainage.

To schedule the saturation temperature of the condensed water, minimum undercooling is 0 íŠ, where no water heating equipment, heating equipment can achieve the best heat transfer efficiency. Back pressure is higher than 85%, is one of the production process heating equipment are the best trap.

Free float type traps are applicable to any kind of don't want effusion conditions, drum drying machine especially suitable for papermaking, printing and dyeing industry (with Hong Straw structure), a wide variety of installation in chemical units in heat exchange equipment, low pressure, the pressure range of 0-4.0 MPa, discharge rate is in the range of 0-9 t/h.

2.Free semi floating ball type steam trap:

The ball barrels free semi floating ball type steam trap, only 1.5 float for the activity components, opening down, the ball barrels that is open and close cases, but also seals. The sphere can be sealed, long service life, resistant to water hammer, no wearing parts, trouble free, durable, no leakage of steam. Back pressure is higher than 80%, can discharge condensed water saturation temperature, minimum undercooling is 0 íŠ, where no water heating equipment, heating equipment can achieve the best heat transfer efficiency.

When the device has just started, the air inside the pipe and low-temperature condensation of water through the launch tube into the trap, double metal valve components emptying barrels bounce the ball, the valve open, air and cold condensate discharge quickly. When the steam drum into the ball, the ball barrels produced upward buoyancy, and temperature inside the valve, dual metal components emptying contraction, poke the ball float to the valve port, the valve closed. When the ball into a bucket of steam condensate, loss of buoyancy to sink the ball bucket, the valve opens, the rapid discharge condensate. When the steam and then into the ball barrel, and then close the valve, intermittent and continuous work.

3.The lever ball float type steam trap:

The basic characteristics and free floating ball lever ball float type steam trap type, the internal structure is connected to the floating ball lever drives the valve to switch the valve heart, with the condensation of water level fluctuation. Lever ball float type steam trap condensate using two seat increase emissions can be achieved by small, large capacity, the largest drainage capacity of 100 tons / hour, is the major heating equipment is the best trap.

Lever ball float type steam trap valve is applicable to any kind of don't want effusion conditions, various widely installed in chemical units in the high, low heat exchange equipment, the pressure range of 0-6.3 MPa, discharge rate is in the range of 0-160 t/h, is the preferred type of large amount of liquid condition.

4.Inverted bucket type steam trap:

The interior of the inverted bucket trap is an inverted bucket for the level of sensitive parts, bucket opening down, inverted bucket connecting lever driven heart valve opening and closing the valve. Inverted bucket steam trap can be row of air, not afraid of water hammer, fouling performance. Undercooling is small, steam leakage rate of less than 3%, the maximum back pressure rate of 75%, more connections, the sensitivity of better than a free float type traps. Because of the inverted bucket type steam trap is the upward buoyant force on the closure of the valve, the working pressure is less than 0.1MPA, not suitable for use.

When the device has just started, the air inside the pipe and low-temperature condensate into the trap, inverted bucket by its own weight to fall, inverted bucket connecting lever drives the valve core to open the valve, temperature of air and condensate discharge quickly. When the steam back into the bucket, the inverted bucket steam upward buoyancy, inverted bucket up lever drives the valve core to close the valve. Inverted bucket on the opening hole, when a part of the steam discharged from the hole, the other part of the steam condensation water, the bucket loses buoyancy, by its own weight to the sink, inverted bucket connecting lever drives the valve core to open the valve, cycle work, intermittent drainage.

(a).Inverted bucket type steam drain valve is applicable to any kind of don't want effusion conditions, various widely installed in chemical units in low pressure, heat exchange equipment and pipeline, the pressure range of 0-4.0 MPa, discharge rate is in the range of 0-9 t/h, anti water hammer pressure ability, is the preferred type of frequent fluctuation conditions the.

5.Combined superheated steam trap:

Combined superheated steam trap valve cavity two isolation, two stainless steel tubes connected by the upper and lower valve chamber, which is composed of a floating ball type and inverted bucket trap, the valve structure is advanced and reasonable, in the overheated high-voltage, working conditions, low load conditions, to timely discharge condensate. The formation of hot steam disappears, effectively prevent leakage of superheated steam, high quality work. The maximum allowable temperature is 600 íŠ, body is stainless steel, the seat is made of hard alloy steel, long service life, is an exclusive steam traps, obtained two national patents, to fill the domestic blank.

When the condensation of water into the valve cavity, the Deputy valve float with the level rises, float steam into pore closure. Condensate increased by the water conduit to the main valve cavity, inverted bucket by weight to fall, driven to open the main valve heart valve, discharge condensate. When vice valve chamber condensate level falls, the float with the liquid level, the Deputy valve open. Steam into the steam pipe from the main valve chamber of the bucket, the bucket upward buoyancy, inverted bucket drives the valve core to close the main valve. When vice valve cavity and then the condensation of water level rise, the next cycle began, intermittent drainage.

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Article tags: Drain valve,Ball Screw Set,Linear Bearing,Power Transmission.




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