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DMF-Z-3-25 Pulse valve Flange Type pulse jet dust collector

DMF-Z-3-25 Pulse valve Flange Type pulse jet dust collector Featured Image
  • DMF-Z-3-25 Pulse valve Flange Type pulse jet dust collector

  • Mode: DMF-ZF-25
  • Type: Flange type
  • Diameter mm : 25mm
  • Outlet Orifice Connection mm: 34 mm

    • Product Detail

    Product Tags

    Pulse diaphragm valve (also called Electro-magnetic valve) is the "switch" for compressed air in the dust clean blowing system of the pulse bag filter. Controlled by the output signals of the pulse jet control device, it makes dust clean to the filter bags cell by cell to keep the resistance of the baghouse within the set range and thus guarantee the processing functions and the dust-collecting efficiency of the baghouse. DMF-Z- electro-magnetic pulse valves are right angle valves (also threaded ones) which are directly installed on the manifold box. They have better flow characteristics and operate with reduced pressure loss, therefore, the are suitable for conditions where the pressure of the gas source is relatively low.

    1

    Working Principle

    The electro-magnetic pulse diaphragm valve is composed of two gas cells. When the compressed air is connected, it comes into the back-gas cell though the orifice.

    The pressure in the back-gas cell pushes the diaphragm closely against the outlet of the valve and the electro-magnetic valve stays in the "closed" condition.

    The electrical signals from the pulse jet control device move the armature of the electro-magnetic pulse valve. The air escape of the back-gas cell opens and the back-gas cell loses pressure quickly, thus the diaphragm moves back and the compressed air blows through the valve outlet. The electro-magnetic

    pulse valve comes into the "open" condition.

    When the electrical signals from the pulse jet control device disappear, the armature of the electro-magnetic pulse valve returns to its original position. The air escape of the back-gas cell closes and the pressure in the back-gas cell rises, which pushes the diaphragm closely against the valve outlet. The electro-magnetic valve comes into its “closed” condition again.

    2

    Type and Specification

    Inner Type New Type Diameter mm DiameterInch Main Diaphragm mm Outer orifice connection mm Blow pipe inner Diameter Weightkg Kv/Cv
    DMF-Z-20 DMF-Z-1-20 Ø20 3/4” 80  27 20 0.65 17.55/20.48
    DMF-Z-25 DMF-Z-1-25 Ø25 1” 96  34 25 0.8 26.16/30.53
    DMF-Z-40S DMF-Z-1-40 Ø40 1 1/2” 111  48 40 1.4 45.85/53.47
    DMF-Z-50S DMF-Z-1-50 Ø50 2” 160 Ø60 50 2.4 61.24/71.47
    DMF-Z-62S DMF-Z-1-62 Ø62 2 1/2” 188 Ø75 62 3.5 129.26/150.85
    DMF-Z-76S DMF-Z-1-76 Ø76 3” 200 Ø89 76 4.3 159.95/186.66
    DMF-Z-89S DMF-Z-1-89 Ø89 3 1/2” 227 Ø102 89 5.9 202/230
    DMF-Z-102S DMF-Z-1-102 Ø102 3 1/2” 255 Ø114 102 7.3 260/303
    DMF-ZM-20 DMF-Z-2-20 Ø20 3/4” 80  27 20 0.9 17.55/20.48
    DMF-ZM-25 DMF-Z-2-25 Ø25 1” 96  34 25 1.3 26.16/30.53
    DMF-ZM-40S DMF-Z-2-40 Ø40 1 1/2” 111  48 40 2 45.85/53.47
    DMF-ZF-20 DMF-Z-3-20 Ø20 3/4” 80  27 20 1.35 17.55/20.48
    DMF-ZF-25 DMF-Z-3-25 Ø25 1” 96  34 25 1.65 26.16/30.53
    DMF-ZF-40S DMF-Z-3-40 Ø40 1 1/2” 111  48 40 2.5 45.85/53.47
              Tolerance: +0.22～+0.44    
    3

    General technical working information

    Index Ideal Value Recommended value  
    Working pressure 0.1Mpa – 0.8Mpa  0.2Mpa – 0.6Mpa
    Working Media Clean air  
    Voltage 24VDC 24VDC, 220VAC, 110VAC
    Current 0.8A 0.8A, 0.23A,  0.46A
    Temperature level ° -25 to 120° -25 to 80°
    Relative Humidity of air   < 85%
    Diaphragm life use 1 million blows or 5 years  1 million blow or 2 years
      Life use is based on standard slow pulse jet

    Materials construction

    Body of valve ADC 12 die-casting Aluminum
    Diaphragm and seals High Quality Nitrile
    Spring 321 stainless steel
    Screw and Ferrule 304ss stainless steel
    Armature 430FR stainless steel
    Solenoid Coil Thermosetting with high quality copper coil

    Note: Good quality imported membranes for all the valves, with each part checked in each manufacturing procedure, and put into the assembly line conforming to all the procedures. Every finished valve being taken the lactiferous blowing test

    Common failure and Troubleshooting

    During

    installation and

    commissioning

    		 Failure phenomena Possible Reason Troubleshooting
    The valves cannot all be opened, but

    the leading part does act.

    		 Check the gas dome pressure to see if

    it is too low

    		 Check the leakage
    Some valves do not work, but the

    others are normal.

    		 Check the valve coil connection and

    coil.

    		 Replace the accessories
    The valves cannot all be closed. There

    is leakage. There is no way to establish a gas dome pressure.

    		 Y-valve. Some valves on the same

    gas dome are leaking, thus causing

    leakage for all the valves.

    Z-valve. The valve inlet and blowing

    muzzle are installed backwards.

    		 Check the leakage.

     

     

     

     

     

     

     

    Re-install
      Some valves cannot be closed. There

    is leakage.

    		 There is some dirt or debris on the

    membrane, it is blocking the moving

    iron core.

    		 Clean the membrane and check

    that the membrane is complete.

    Check the moving iron core and air

    lock.
      A valve closing is slowly. The membrane orifice is blocked Dredge the membrane orifice.

    During using valve period

    		 Some valves are leaking. The

    membrane cannot close tightly and

    the valve is always open a little.

    		 There is some dirt or debris on

    the membrane, the leading part

    is damaged. Moving iron core is

    blocked.

    		 Clean the membrane and check

    that the membrane piece is

    complete. Check the moving iron

    core and the air lock. Replace the

    accessories if necessary.
    Coil is hot and burned out. It has been turned on for too long. Check the working condition of the

    control system.
    Voltage exists but the valve does not

    operate.

    		 Membrane is damaged and the orifice

    is blocked.

    		 Replace the accessories in time.
    Ambient temperature is below -20C°.

    The valve is leaking and cannot open.

    		 Ambient temperature is too low and

    there is frost in the valve.

    		 Pay attention to insulation and

    maintaining proper temperatures

    Notice

    Work pressure must be strictly controlled to within 2-6 kg and being stable relatively.

    Before the valve is installed, it is necessary to completely clear away any impurities in the gas dome.

    Compressed air must be strictly controlled and must be a clean and dry air supply

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