Rotary valve Each part variation

Variation of rotor

Note: It is classified by model classification (7)(8)(9).

Rotor option Model classification (7)

Helical H Type

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  • Rotor which has blades twisted in the direction of rotor rotation
  • Powder and granular is discharged continuously compared to the straight blades
  • Clogging of powder and granular in the case blades is less compared to the straight blades
  • Compared to the straight blades, the number of blade seals with the case reduces and air-tightness goes down a little

Double-helical WH Type

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  • Rotor with blades twisted in V shape in the direction of rotor rotation
  • Powder and granular clogging in the case blades is less compared to straight blades
  • Finally clogging is less due to combination with clogging prevention shoot

Upper-bottom R Type

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  • A type where rotor inner cylinder is larger than the standard, which results in rotor volume re-suction
  • Adopt, when required discharge efficiency is less with respect to connected caliber
  • As the powder and granular part is shallow, flaking of powder and granular material at the time of discharge is comparatively good

Zigzag T Type

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  • Pocket structure in which filling chamber is divided in multiple shaft directions and which has phase difference in the direction of rotation
  • Use , when continued amount of supply is required for weighing device
  • As pocket wall area is comparatively more, it is not suitable for highly adhesive powders and granular

Round-bottom S Type

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  • Structure where R is designed in such a way that there are no angles at the bottom of the rotor’s powder and granular filling part
  • Effective in improvement of peel ability of powder and granular

Steel-ball B Type

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  • Structure where baffle plate and steel ball is designed in rotor inner cylinder
  • Steel ball moves upward and downward in repetition depending on rotor rotation and

Rotor classification Model classification (8)

Open O Type

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  • Rotor which do not have side wells at both ends of blade
  • As the clearance of case should be with blade front end and blade both side ends, it is necessary to control clearance in circumferential direction and shaft direction
  • Powder and granular residue is less, as the stuffing box inner surface is exposed inside the line

Pocket P Type

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  • Rotor with side wells on both ends of blade
  • Control of clearance only for circumferential direction, as the clearance with the case is end of blade and side wall circumference
  • As there is a space partitioned by stuffing box and side well, take proper care so that powder should not get stuck internally
  • It is suitable for shaft seal protection, as shaft seal is separated from the line for powder and granular flow

Single-pocket OP Type

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  • Rotor with side walls for blade single end
  • Clearance of case should be by blade ends, side wall circumference and open side blade end
  • Sanitary type etc controls side wall on drive side, protects shaft seal and also make maintenance easy as open door side

Molded-rubber F Type

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  • Casting rubber rotor
  • Initial sealing performance is high, as it rotates while in contact with the case
  • Rotor is generally dealt as consumable and is ideal for powders with low wearing resistance
  • As rubber wears out, there is a possibility of small amount mixing in powder and granular line
  • Easy to clog and possibility of discharge of undefined material

All-resin L Type

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  • Resin integrated cutting rotor
  • Material compliance as per your specification such as Teflon, ultra-high molecular weight polyethylene etc.

Rotor material Model classification (9)

Rubber-chip TU Type

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  • Metal rotor’s end of the blade equipped with rubber tip
  • Use for larger size rotor that cannot be covered by molded rubber rotor
  • Tip part is a contact seal and has high initial air tightness
  • Replacement of tip and adjustment possible for cutting edge clearance

Metal-chip TS Type

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  • Metal rotor’s end of the blade equipped with metal tip
  • Applicable in case of tip differing from rotor material
  • Replacement of tip and adjustment possible for cutting edge clearance