DE19722544A1 - Process and plant for the rehabilitation of floor catches filled with granules - Google Patents

Abstract

The system is used for cleaning the sand trap at a shooting range. A mobile assembly is brought into place and the sand or other material to take the shot is transferred by suction in a closed system for intermediate storage. The granular material and the spent bullets are separated, and the cleaned sand is blown back. An assembly may be used with a vehicle which carries a suction or blower fan (5) to move the sand granules (3) into and out of a closed collection chamber (2). The system is fitted with the appropriate suction or blowing channels (4) and a control.

Description

Basically, at military firing ranges or at other places where there is sharp shooting, so-called Piled up sand bunkers in front of which the targets are set up to ensure that the penetrating projectiles in the Sand walls or sand bunkers behind the targets who the. The bombardment of such sand bunkers is quite a problem represents considerable environmental pollution, as this means that the projectile metals, especially the bullet lead, directly into the environment is introduced. These finest parties come over the rain kel into the groundwater and contaminate it in part considerable scope. The renovation of such sand bunkers is extremely complex, since the entire sand volume is cleaned If this is not possible, the quantities must be disposed of as hazardous waste be treated.

It is thanks to the applicant, instead of such a sand bun have developed high-impact bullet trap systems.

With such bullet trap systems, the bullet catches came mer-like design, the individual bullet traps at least on the impact side of the Bullets are equipped with plastic plates, the Contents of the bullet trap with one of the bullets  granules, e.g. B. a rubber granulate or a ver like substance, are filled.

The bullet trap fills up after a period of fire more and more with the floors or parts of floors, which, not least because of their lead content, are disposed of so as not to contaminate the environment. Furthermore part of the granules and / or the front wall of the Ge lap chamber through the impinging projectiles in the finest Particles shot up, which also pollute the environment can represent, since these dusts also particles of Me tallen and granules that do not match the Um should be delivered. One tries therefore in pe periodic intervals for a renovation.

The object of the invention is to provide a solution with which the granules with simple means and high effectiveness can be refurbished and immediately reused, whereby it should be ensured to a particular degree that the environment not unnecessarily contaminated by dusts or lead residues is charged.

This is done using a method of the type described at the beginning Object achieved according to the invention in that in a ge sucked closed system of the projectile catch contents, if necessary, between caged, the components granulate and projectiles separate  and the refurbished bullet trap blown back becomes.

By means of suction / blowing technology or pneumatic conveying technology, it is possible to keep the entire floor catch content remove to either offset them immediately or ready to the extent that on the one hand the substances to be disposed of are available for transport and the sa niert bullet trap granules for returning to the floor catch.

Refinements result from the subclaims, wherein for example, due to the suction technology and the clear Un Different in specific weight it is possible to use the doors of granules and projectiles or projectile parts as Perform gravity separation by, for example, a Chamber of the bullet trap is sucked off comparatively gently, such that the significantly heavier projectile particles on Collect the bottom of the chamber so that it can be removed. Of course, this can also be done separately. H. un ter use of an intermediate or separating container.

A large number of chambers are provided next to each other, what is the rule for military installations as such, it is possible to treat the bullet trap cascading, as the invention also provides, d. that is, a chamber  to empty, immediately clean the granulate and empty one Fill the adjacent chamber with the cleaned granulate.

To achieve the above object, the invention also provides one System in front, which is conveyed by a suction / pressure blower of granulate particles from or into a bullet trap and a suction / blowing line and a control device for lei system.

The same advantages apply to the system according to the invention as for the corresponding procedure, d. H. with the facility is achieved in particular that the granules are quickly cleaned up can be and the environment from harmful pollution ge protects. In addition, by catching the Ge bullets or projectile parts recycled the corresponding metals can be.

Refinements of the system result from the further Un ter claims, whereby advantageously the system with a Zwi storage container, e.g. B. a closed container, out can be equipped, which is particularly useful if the Dispose of rented vacuum press vehicles and intermediate storage over a longer period of time is necessary dig.

To prevent dust from escaping into the environment  Filter devices both for those escaping when filling Air is provided, as well as for the dusts that occur during filling of the intermediate container and / or the bullet trap chambers can hen.

The storage and separation container can be used as a standard container Textile cover can be formed, such a standard container in the area of the cover with connections for the Suction / blowing line and be provided for an exhaust air line can, the exhaust pipe with a filter, e.g. B. one Filter bag can be equipped.

This also applies to filling the bullet trap chambers. Here can be a releasably connectable cover plate according to the invention be seen with the connecting piece for the suction / blowing line and an exhaust pipe with filter.

It may be useful if the cover plate at the same time is also designed as a cover for the standard container, so that here in the system only a corresponding element must be kept.

Further details, advantages and features of the invention he give themselves based on the following description of the drawing nung. This shows in

Fig. 1 is a process diagram of the granule remediation

Fig. 2 and 3, simplified schematic diagrams of the emptying or filling illustrative and in

Fig. 4 shows the design of a cover plate in plan and side view.

As can be seen from FIG. 1, the method according to the invention permits the treatment of the granules in a closed circuit. First of all, the granules are suctioned off, if necessary, stored temporarily, separated from the pollutants, in particular the bullets or parts of the projectile, which is referred to in FIG. 1 as "separators" and finally the bullet trap chambers are filled again with the refurbished granules.

In Fig. 1 it is not additionally shown that, if necessary, the granules are replaced by the renovation.

As is apparent from Fig. 2, is a generally designated 1 neter bullet trap which is of several chambers 2, 2 a and 2 b be filled with granules 3, renovated. For this purpose, the granules 3 via a suction line 4 by means of a pump 5 shown only sym bol ge in a vacuum container 6 sucks.

The suction line 4 can be equipped with a separating section 4 a, in such a way that particles that are heavier than the granulate particles, e.g. B. projectile parts, although possibly sucked in, but can not overcome the lifting height of this separation section 4 a, so that after switching off the suction fan 5 back into the chamber, in Fig. 2 it is the Kam mer 2 a, at Fig. 3 around the container 7 , fall, stay there and can be removed later.

However, the arrangement can also be such that all of the particles from the individual projectile trap chambers 2 are sucked into the vacuum container 6 and from there via a further pressure line 4 'into a storage or separation container designated 7 , e.g. B. a container to be blown.

The storage or separating container 7 can be a conventional container which is partially provided with a cover plate 8 , which is provided with connections 9 for the suction / blowing line 4 'and with a connection 10 for an exhaust air line 11 , which in turn is equipped with a filter 12 .

If the cover plate 8 , as shown in FIG. 2, is significantly smaller than the free surface of the separating container 7 , the rest, as also shown in FIG. 2, can be equipped with an airtight cover 13 .

In Fig. 3 the Separierungs- and filling is illustrated. Here, the granules 3 are sucked out of the separating container 7 via the line 4 ′ into the vacuum container 6 , a separating section 4 a again being able to be provided here.

The granulate particles are then blown into a projectile trap chamber 2 a via line 4 , chamber 2 a being provided with a cover plate 8 , where an exhaust air line 13 with a filter bag 14 can be provided.

By a dash-dotted arrow 15 it is indicated that, depending on the funding, the granules can also be introduced directly from the inter mediate container 7 into the projectile trap chamber 2 a.

Finally, Fig. 4 shows a top view and side view of a design option of a cover plate 8 with the filler neck 9 and the vent 10 and a level tester 16th The fill level tester 16 can have a touch plate 17 , which can be operated via a spring-loaded handle 18 , the mode of operation being such that after a certain filling time, the person monitoring the filling via the handle 18, the plate 17 into the container. or presses into the interior of the chamber to sense whether the granulate has already reached a correspondingly high level. Of course, the cover plate 8 can also be equipped with a sight glass, but here there is the disadvantage that the view into the container can be disturbed comparatively quickly by dust development.

Of course, the described embodiments are the Er change in many ways without the To leave basic ideas. So the invention is not on one special suction / blowing process limited, not even to the special type of filter training u. Like. more.

Claims (12)

1. Catch method for the refurbishment of a storey filled with granules, the granules being contaminated with the storeys or parts of the storey, characterized in that in a closed system the storey contents are sucked off, if necessary temporarily stored, the components of the granules and storeys separated and that refurbished bullet trap is blown back. 2. The method according to claim 1, characterized, that the suction takes place with a higher output than that Blow back the refurbished granulate. 3. The method according to claim 1 or 2, characterized, that the separation of granules and projectiles or projectile len taking advantage of the different specific Ge weights as gravity separation. 4. The method according to any one of the preceding claims for sania tion of several adjacent bullet traps, characterized,  that the content of a chamber is temporarily stored, the content of the next chamber with gravity separation essentially the first emptied chamber, the contamination ent distant, the contents of another chamber about gravity defenses filled into the second chamber and immediately the two pellet stored in the last chamber after renovation is filled in, granule losses being replaced if necessary. 5. The method according to any one of the preceding claims, characterized, that when filling a bullet trap this widest hermetically sealed with an air discharge duct, the with a filter bag or the like. To catch the on blow up whirled dust is equipped. 6. Plant for the remediation of bullet catches filled with granules, the granules being contaminated with the bullets or projectile parts, in particular for carrying out the method according to one of the preceding claims, characterized by a suction / pressure blower ( 5 ) for conveying granulate particles ( 3 ) from or in a floor trap chamber ( 2 ) and a suction / blowing line ( 4 ) and a control device for performance control. 7. Plant according to claim 6, characterized by a vacuum container ( 6 ) for the conveyed particles. 8. Plant according to claim 6 or 7, characterized by an intermediate storage container ( 7 ), for. B. a closed con tainer, which is essentially dust-tight against the environment, with a filter device for the escaping, polluted exhaust air when filling the separating container. 9. Plant according to claim 8, characterized in that the separating container ( 7 ) as a standard container with textile cover ( 13 ) and in the area of the cover ( 8 ) with connections ( 9 , 10 ) for the suction / blowing line ( 4 ) and the exhaust pipe ( 11 ) is formed. 10. Plant according to one of claims 6 to 9, characterized by a releasably connectable cover plate ( 8 ) or the like. For the projectile trap chambers ( 2 ) to be treated with a connecting piece ( 9 ) for the suction / blowing line ( 4 ), a connecting piece ( 10 ) for the exhaust air line ( 13 ) with filter ( 14 ) and with a level indicator or tester ( 16 ). 11. Plant according to claim 9 or 10, characterized in that the cover plate ( 8 ) for the at least partial cover from the separating container ( 7 ) and the projectile trap chamber ( 2 ) is formed. 12. Plant according to claim 6 or one of the following claims, characterized in that in the suction line ( 4 ) a separating section ( 4 a) Granu lat / projectile parts is provided.