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Air Knocker

Direct Impact Type

Typical Applications
RKD30PA Img
RKD30PA
RKD40PA Img
RKD40PA
RKD60PA Img
RKD60/80PA
RKD100PA Img
RKD100PA
Features

The impact force of the air knocker can be easily adjusted via unique valve mechanism (patented) by varying the compressed air supply.

The ability to adjust the impact force will enhances the air knocker capability to work on unforeseen circumstances such as changes of material characteristic due to the process.

*The blue part is the unique “umbrella type valve”

Beside working as a standalone unit, the air knocker also has a relay piping feature (patented) which can link multiple air knockers in cascade connection and operate with an air knocker’s controller or a solenoid valve. This feature is extremely useful where several air knockers installed on a same silo/hopper or on the same pipe line and it could significantly reduce the control component costs.

Multiple Air Knockers operated in Cascade Connection

In combination used with fully pneumatic operated controller (AOC-1B), the air knocker can be easily add on to the equipment without electrical works! The AOC-1B controller can be actuated manually by a 3-way hand valve (In-built) or automatically by an external 3-way solenoid valve or pneumatic valve.

The electrical/pneumatic signal to actuate the solenoid/pneumatic valve could be from the existing equipment.

The repair kit consists of 4 replacement parts only and can be easily replaced within 10 minutes.
With its simple and yet rugged construction, it can operate up to 1 million strokes without failure (according to in-house testing, excluding RKV120P). High reliability means minimum production disturbance which results in higher productivity.

The body of Exen’s RKV air knocker is made of high strength ductile cast iron FCD 800 which could lasts for years.
Technical Data
ModelWorking Pressure (Mpa)Stroke Cycle (times/min)Air Consumption (L/time (ANR))Stroke Energy (N.m)Impulsive Force (kg.m/s)Equivalent Hammer (pound)Mass (kg)
RKD30PA0.3 ~ 0.71 ~ 600.05 ~ 0.135.5 ~ 13.11.2 ~ 1.81 or less2.1
RKD40PA0.15 ~ 0.379.2 ~ 22.32.6 ~ 4.01 ~ 1.55.2
RKD60PA0.33 ~ 0.7720.6 ~ 49.06.9 ~ 10.61.5 ~ 313.1
RKD80PA0.60 ~ 1.4045.1 ~ 10915.2 ~ 23.73 ~ 818.4
RKD100PA0.98 ~ 2.2882.4 ~ 20130.0 ~ 46.96 ~ 1535.5

* The reinforcement rib is included in RKD60PA or upper models as standard, and wire and shackle are included in all models as standard.

* The weight includes that of base.

ModelØAØCDØEFGHIØJØKSTMOTubing Size
RKD30PA6670815381/895(25)8.55517100Rp1/4Ø8 X Ø6
RKD40PA86951223.55514012.57025150
RKD60PA11513814356518314.511035200Rp3/8
RKD80PA1461481647.5601/4222(28)17.012040Rp1/2
RKD100PA1752082054.55027021.017050250Rp3/4