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Air Knocker

Eliminate the blockage of powder by automation of hammering!

This product is used for the following applications:

  • Prevention of clogging in hopper in sewage sludge fuel production facilities
  • Prevention of blockage in dust hopper for dust collector in waste treatment plant
  • Prevention of blockage in the recycle fuel (capsule of compressed wood) supply hopper
  • Prevention of blockage in the glass cullet storage hopper
  • Elimination of clogging of livestock forage silo
  • Facilitation of ejection of silica gel
  • Elimination of adhesion of calcination product raw material on wall surface
  • Knocking off the ash in the recycling plant. Facilitation of ejection of aluminum powder
  • Prevention of adhesion in piping in pharmaceutical plant

The Air knocker (Indirect impact type) is a unique equipment in which the force of compressed air causes the piston to energetically strike the base surface, which eliminates the adhesion or clogging of powder. In addition, this knocker is excellent in safety and economics because it can be used only by air supply, and it can be used safely for powder that has a characteristic to show adhesion when receiving the centrifugal vibration.

Operating principle of Air knocker
  1. The compressed air flowed into the knocker is first supplied to the valve chamber to depress the mushroom valve and then is stored in the accumulator.
  2. When the three-way valve is actuated to exhaust the air from the valve chamber, the compressed air in the accumulator moves the mushroom valve upward.
  3. When the mushroom valve moves, the compressed air in the accumulator depresses the piston energetically, which strikes the base surface. That impact force eliminates the adhesion or blockage of powder.
Achieved miniaturization and weight reduction Relay knocker RKV-PB has achieved miniaturization while maintaining the same tank capacity as the old model. In addition, the weight has been reduced by changing the cylinder to aluminum die casting.
Air knocker impact force can be changed only by adjusting the supply air pressure.

 

ECO-friendly / Oil- free operation
Excellent durability and simple structural design
Adoption of convenient push one connector(only for RKV20)

 

Small body and lightweight. High versatility!
World largest class air knocker RKV120P for big hopper, silo and etc. (mining, feed grain, steel works etc.)
Wide range Air Knocker models

 

Air knocker installation method
Model Code Number
RKV20P(*1) 000992000
RKV30PB(*1) 001696000
RKV40PB(*1) 001698000
RKV60PB(*2) 001700000
RKV80PA(*2) 000691000
RKV100PA(*2) 000692000
RKV120P(Bolt and nut set) 001690000
RKV120P Mounting base(*3) 001711000
RKV60PBR(*4) 001822000
RKV80PAR(*4) 001199000
RKV100PAR(*4) 001200000

*1 Base is included as standerd equipment.
*2 Plane-mounted base is included as standerd equipment.
*3 RKV120P mounting base is sold separately.
*4 PAR is equipped with curved surface mounted base for round hopper, as standard equipment.

RKV (Normal piping)

Model Working
Pressure
(MPa)
Stroke
Cycle
(times/min)
Air
Consumption
(L/times(ANR))
Stroke
Energy
(N・m)
Impulsive Force Weight
(kg)
(kg・m/s) Converts into
Hammer pound
(lb)
RKV20P 0.3-0.7 1-60 0.04-0.10 4.3-8.3 0.6-0.8 Below 0.6 0.8
RKV30PB 0.05-0.13 5.5-13.1 1.2-1.8 Below 1 1.0
RKV40PB 0.15-0.37 9.2-22.3 2.6-4.0 1-1.5 2.5
RKV60PB/PBR 0.33-0.77 20.6-49.0 6.9-10.6 1.5-3.0 7.0/7.1
RKV80PA/PAR 0.60-1.40 45.1-109 15.2-23.7 3-8 14.5 /14.6
RKV100PA/PAR 0.98-2.28 82.4-201 30.0-46.9 6-15 34.0/34.3
RKV120P 1-6 3.32-6.64 131-321 52.0-84.0 Twice size of
RKV100PA
51.8

(Imperial System)

Model Working
Pressure
(PSI)
Stroke
Cycle
(times/min)
Air
Consumption
(cf/time)
Stroke
Energy
(lbf ・ft)
Impulsive Force Weight
(lb)
(ft・lbf/s) Converts into
Hammer pound
(lb)
RKV20P 44-102 1-60 0.001-0.004 3.2-6.1 4.3-5.8 Below 0.6 1.8
RKV30PB 0.002-0.005 4.1-9.7 8.7-13.0 Below 1 2.2
RKV40PB 0.005-0.013 6.8-16.4 18.8-28.9 1-1.5 5.5
RKV60PB/PBR 0.012-0.027 15.2-36.1 49.9-76.7 1.5-3.0 15.4/15.7
RKV80PA/PAR 0.021-0.049 33.3-80.4 109.9-171.4 3-8 32.0/ 32.2
RKV100PA/PAR 0.034-0.080 60.8-148.3 217-339.2 6-15 75.1/ 75.6
RKV120P 1-6 0.117-0.234 96.6-236.8 376.1-607.6 Twice size of
RKV100PA
114.2

*The reinforcement rib is included in RKV60PB or upper models as standard, and wire and shackle are included in all models as standard.
*The weight includes that of base.
*RKV120P model is not equipped a fall prevention wire to the body. Please be sure to install them before using.
*Mounting base of RKV120P is including reinforcing ribs. Please weld this ribs to the mounting base when using.
*RKV120P mounting base is sold separately.