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Pdf brochure DOWNLOAD (Air Knocker - Relay knocker, Stainless knocker, Control, 2-page 255kb)
Pdf Questionnaire DOWNLOAD (Exen survey for Flow Aid System, 1-page 35kb)
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<Comparison between air knocker and piston vibrator>
Multiple Air Knocker principle and features
Compressed air is introduced to the air tank of the Knocker and
the piston momentally works by opening/closing the inside valve
using three-way valve. The generated impact will avoid the powder
sticking/clogging problem at hoppers. This system eliminates the
manual hammering work. Fully automatic operation is possible.
Hammering strength is adjustable by changing pressure.
Multiple knockers can be installed by single valve action.
Tubing for Multiple Air Knocker installation
When multiple instllation, compressed air is supplied through theree-way valve to tank-center port of the knocker. And from the next sub port, another tube is connected to the next air knocker main port. And the 3rd and more knocker can be connected in the same way. All the air kncockers work almost at the same time (very short time lag). Multiple air knocker can be operated by single valve action, which decreases the initial cost. Maximum quanity (3 to 10 units) depends on the control and the three-way valve. (Patented)
EXAMPLE OF TYPICAL FLOW AID
SYSTEM INSTALLATION
Air knocker installation example
TROUBLE
PHENOMENON
.
BRIDGING Bridging occurs when materials cling to the wall or compact above the discharge
opening of the lower part in the hopper, and the flow of materials in the
upper part is interrupted.
RATHOLING Rat holing occurs
when materials flow only above the exit, and form a tube that leaves
the hopper filled with "dead" materials, which will not move.
.
ARCHING Arching occurs when materials in the lower part of the hopper flow out from the discharge opening, and an arch strong enough to support the entire head load in the hopper is formed
ADHERENCE TO WALL Clinging
materials and also materials easily influenced by the moisture and
the temperature adhere to the wall and refuse to
flow.
RKV30PA
RKV40PA
RKV60PA
RKV80PA
RKV100PA
SPECIFICATIONS
Model
Working Pressure (MPa)
Percussion Cycle (times/min)
Air Consumption (Nl/time)
Percussion Energy (N-m)
Impulsive Force
Total Weight (kg)
(kg-m/s)
Suitable hammer (Ibs)
RKV30PA
0.3-0.7
1-60
0.05-0.13
5.49-13.1
1.70-2.60
below 1.0
1.3
RKV40PA
0.15-0.37
9.22-22.3
2.86-4.42
1.0-1.5
3.4
RKV60PA
0.33-0.77
20.60-49.0
6.80-10.50
1.5-3.0
8.8
RKV80PA
0.60-1.40
45.10-109.0
15.00-23.30
3.0-8.0
13.7
RKV100PA
0.98-2.28
82.40-201.0
28.70-44.50
6.0-15.0
30.8
DIMENSIONS CHART(mm)
Model
A
C
D
G
H
I
J
K
L
M
N
RKV30PA
66
70
8
1/8
95
(25)
8.5
55
8
35
27.2
RKV40PA
86
95
12
140
12.5
70
13
60
34.0
RKV60PA
115
138
14
183
14.5
110
15
80
76.3
RKV80PA
146
148
16
1/4
222
(28)
17.0
120
18
90
RKV100PA
175
208
20
270
21.0
170
23
115
114.3
INSTALLATION METHOD
(1)
When wall thickness in the installation part is thin, prepare the
reinforcing plate of 3 2 to 6 mm thick, and weld the center and
around the whole reinforcing plate in front fillet welding to the
hopper for transmitting percussion force more efficiently. (2)
Weld around the whole circumference of the base. (3) For the
model larger than RKV60, weld accessory reinforcing rib usually
necessary for RKV30P and 40P. (4) Tighten the body thoroughly,
using accessory bolt, spring washer, and hard lock nut. (5)
Secure the knocker by suspending with wire rope to prevent the
knocker from dropping.
CAUTION ON
WELDING
When operating, considerable impact is given to welds. When welding, pad as much as possible to eliminate damage, which may be caused.
REINFORCING PLATE
DIMENSIONS
Model
Square
Plate
Round
Plate
RKV30PA
□150 t3.2
150 mm dia. t3.2
RKV40PA
□200 t3.2
200 mm dia. t3.2
RKV60PA
□300 t4.5
300 mm dia. t4.5
RKV80PA
□400 t4.5
400 mm dia. t4.5
RKV100PA
□500 t6.0
500 mm dia. t6.0
Manufactured by Exen Corporation 1-7-13, Hamamatsucho, Minato-ku, Tokyo 105-0013 Japan
Tel: +81-3-3434-8455, Fax: +81-3-3434-1658 E-mail Exen Air Knocker web site
Distributed by Moritani America Inc.
300 Park Boulevard Itasca, IL 60143 USA
Phone: 630-250-4046
F A X : 630-250-0717 E-mail
This is AAAmachine, Inc. web site. http://www.aaamachine.com
--- AIR KNOCKER (Impactor)
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