For the conventional blaster, once installed in the silo or hopper, it was necessary to replace the product itself when replacing a consumable part. This took lots of hard work because the product may have been installed to a high place. By adopting the new valve mechanism in which the above disadvantage is removed, a consumable part in the valve can be easily replaced at the installation site, which improves the maintenability.

Like the production series (pneumatic direct blaster and pneumatic twin blaster), the pressure tank for pneumatic filling is designed and manufactured in accordance with the class-2 pressure vessel standards (JIS). Although the above standards are applied to pressure tanks with capacity of 40L or more, EXEN applies the standards to all models (20L to 230L) for customers to use them safely. In consideration of maintenance, the meter is mounted outside to be able to check whether pneumatic filling is sufficient in the pressure tank.
(standard equipment in all models)

The injection ports located in the right and left of body blasts the air alternately. For a tough blockage, changing the second injection in a different direction than that of the first injection provides a synergetic effect. Generally, the product is installed so that combination of two or more units provides further injection effect, and has a large number of track records in the fresh concrete plant, secondary concrete product plant, plant silo of dam site.

One direct blaster has capabilities for two unit, which means that using multiple unit s allows significant cost reduction. The installation const is also reduced because of the number of units. The maintenance cost is also reduced because of the same reason.

Accidents have occurred continuously owing to reliance on man-powered work for eliminating blockage in silo. The blockage in silo is caused by an arching phenomenon and balance of contents. An imbalance from man-powered work causes the contents to start flowing, which will result in a large-scale accident. The pneumatic direct blaster is adopted in many sites for the purpose of preventing the above accident causing injury or death.

Adoption of mushroom valve method allows an injection force to be adjusted by changing the pressure of supplied air. If there is a request to make replacement for larger or smaller equipment, the issue can be solved by pressure regulation with unnecessary replacement work.

Nitrogen gas can be used for blast air. If the contents are flammable or likely to be exploded, nitrogen gas can be used. The safety measures for explosion proof can be secured by the blaster, which results in cost reduction. This product has a large number of proven track records in the waste disposal plant, etc.

Various types of dedicated nozzles are available, which can be chose depending on the situation of adhesion or clogging and installation location.

*For manufacturing of special nozzle with heat resistance of 1000℃ or more, contact EXEN.

Dimensions, installation, control panel

Product dimensional drawings

EDB4-130T

Product dimensional table

Model	Outlet dia.			Total length	width		Tank size		Inlet	Eye Bolt
	A	B	F	L	W1	W2	ΦD	E	G
EDB2.5-20T	65	140	4-M16	1161	390	500	216	566	15A (1/2B)	M12
EDB2.5-30T				1152	417	527	267	494
EDB4-60T	100	175	8-M16	1590	494	604	319	712		M16
EDB4-130T				1641	566	676	462	685
EDB6-230T	150	240	8-M20	2155	664	774	512	1011		M20

（Imperial System）

Model	Outlet dia.			Total length	width		Tank size		Inlet	Eye Bolt
	A	B	F	L	W1	W2	ΦD	E	G
EDB2.5-20T	2.6	5.5	4-5/8	3’10”	1’3″	1’8″	8.5	1’10”	15A (1/2B)	7/16
EDB2.5-30T				3’9″	1’4″	1’9″	10.5	1’7″
EDB4-60T	3.9	6.9	8-5/8	5’3″	1’7″	2’0″	1’1″	2’4″		5/8
EDB4-130T				5’5″	1’10”	2’3″	1’6″	2’3″
EDB6-230T	5.9	9.4	8-3/4	7’1″	2’2″	2’6″	1’8″	3’4″		3/4

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