DE102013015897A1 - Process for the production of a core in contaminated substrates and apparatus for carrying out such a process - Google Patents

Abstract

A method and apparatus for making a core in a ground plate (50) of contaminated material / topping (52) with a core machine (12) having a drill bit (58) with a bit (16), the bit (16) flushing water (SPW) is supplied via a feed water line (60), characterized in that a dense water circulation in which the area of the drill bit (16) is surrounded in a watertight manner by a sealing unit (18), the rinse water (SPW) supplied to the drill bit (16) Sucked water (SMW) with impurities (56) is sucked out of a sealing chamber (20) formed between the sealing unit (18) and the top lining (52) during the drilling operation, and the dirty water (SMW) is subsequently separated from the contaminants (56) recycled rinse water (SPW) is returned to the drill bit (16).

Description

TECHNICAL AREA

The present invention relates to a method for producing a drill core in a ground plate with hazardous material / surface covering with a drill core machine with drill, with drill bit, wherein the drill bit rinse water is supplied via a feed water line. The present invention also relates to an apparatus for carrying out such a method.

STATE OF THE ART

In the past, many floor coverings were used that are contaminated with hazardous substances and therefore sometimes pose a threat to human health. Thus, in particular in industrial plants, the floor slabs were provided with an asbestos-containing surface covering, since asbestos has fire-retardant properties and, moreover, is a good insulating material. With increasing consumption of asbestos, however, it has been found that the health risks for humans have increased immensely, so that since 1970, the asbestos fiber is officially assessed as carcinogenic. The use of asbestos products is prohibited in the meantime. Therefore, there are many floor coverings to work on which need to be rehabilitated to remove the asbestos-containing materials and replace them with non-harmful materials. Improper handling of asbestos and the processing (for example with high-speed machines) asbestos-containing materials are released asbestos fibers and can reach the alveoli of the lungs of the respective Beatmers and trigger an asbestosis even at low load.

The risk of developing lung cancer is enormously increased. As a result, when rehabilitating coverings with asbestos-containing material, ensuring that no asbestos fibers enter the environment during remediation has the highest priority.

Furthermore, so-called polycyclic aromatic hydrocarbons (PAHs) were used for gluing parquet until the 1970s, which also involved a high health risk. When renovating such floor coverings, care must be taken to ensure that no material is released.

Before a refurbishment is definitely carried out, in many cases a drill core sample has to be drawn. For this purpose, core drilling machines are used, which generate by means of the rotation of a drill bit a core, which is then removed and analyzed.

With the known core drilling machines, it is not possible to guarantee that no harmful substances enter the environment during the production of the core.

PRESENTATION OF THE INVENTION

Based on the cited prior art, the present invention has the object or the technical problem of providing a method for producing a drill core in a base plate with hazardous material / Oberbelag and a device for performing the method by means of which / a excludes health hazards to the operator during the production of the core, which can be used economically, the individual components can be used in a simple manner and thus allow an economic production of a core and also ensure a permanently reliable function.

The inventive method for producing a core in a base plate with hazardous material / Oberbelag is given by the features of independent claim 1.

Advantageous embodiments and further developments of the method are given by the dependent of the independent claim 1 directly or indirectly dependent claims.

The device according to the invention for carrying out the method is given by the features of independent claim 4. Advantageous embodiments and further developments of the device according to the invention are represented by the claims directly or indirectly dependent on the independent claim 4 claims.

The inventive method of the type mentioned is accordingly characterized in that a tight in itself water cycle is formed, in which the area of the drill bit is watertight surrounded by a sealing unit, which is also designed as a water ring with sealing chamber, the rinse water supplied to the drill bit is sucked as dirty water with impurities from an existing between the sealing unit and the topping during the drilling sealing chamber, the dirty water is then separated from the impurities and the rinse water again received the drill bit is fed. The separated impurities can then be disposed of as needed.

The basic idea according to the invention is that during the production of the Drill core is formed a completely watertight circuit, which prevents that no hazardous material enters the environment. The supplied rinse water is sucked in the field of the drill bit after it is loaded with contaminated contaminants within the circuit and discharged as dirty water, and then the impurity particles are separated from the waste water, which again rinse water from the dirty water, which can be fed back to the drill bit , The water cycle also allows an economic implementation of the method, since the water consumption in the production of such cores is significantly limited and does not constantly fresh water must be supplied.

A particularly preferred embodiment of the method according to the invention is characterized in that when sucking the dirty water from the sealing chamber of the sealing unit, a peristaltic pump is used which generates a negative pressure, in particular up to 1.0 bar, in the sealing chamber and sucks the dirty water via a return water line and a water tank means for separating the contaminant from the dirty water supplies.

The use of a peristaltic pump ensures that no dry running of the pumps can take place, since a peristaltic pump does not run dry, even if the suction material does not exist for a certain period of time. In addition, a peristaltic pump can generate a sufficiently large underpressure, for example up to 1.0 bar, so that a reliable suction of the dirty water with impurities, some of which also consist of solid particles, is ensured at all times. A structurally particularly simple to implement and therefore very advantageous development of the method according to the invention is characterized in that the dirty water is fed to a settling chamber designed as the first container unit in which deposit the impurity on the bottom of the first container unit and thereby cleaned dirty water as rinse water an overflow is directed into a second container unit and from the drill bit is fed again via a second pumping unit and the supply water line.

A particularly advantageous embodiment of the method, which ensures an optional sealing unit, is characterized in that before the drilling operation, a vacuum plate located on the underside is activated, whereby the sealing unit arranged on a holding unit on the underside is pressed sealingly onto the ground surface.

The inventive device for producing a drill core in a base plate with hazardous material / Oberbelag is inventively characterized in that a sealing unit in the drill bit is present, which is sealingly placed on the top of the bottom plate or on the top surface and thus with this a sealing chamber forms, a water tank means having a first container unit and a second container unit is present, to the sealing chamber via a return water line, a first pump unit is connected, which sucks the dirty water with contamination from the sealing chamber into the first container unit, wherein the first container unit is formed as a settling chamber, in which the contaminants are separated from the dirty water, between the first and second container unit, a partition wall with overflow edge is present over which the cleaned in the first container unit dirty water as a rinse d he second container unit is performed, in the second container unit, a second pump unit is present, which feeds the rinse water via a flow line to the drill or the drill bit again, so that a total of a sealed closed water cycle between rinse water and dirty water is present.

By this device, a closed water cycle is given, which ensures that at no time the core production hazardous contaminants can escape, the production of the core can proceed as usual.

Preferably, the first pump unit is designed as a peristaltic pump, which can not run dry and ensures a permanently reliable suction, since a vacuum can be generated up to 1.0 bar, which is sufficient to the waste water occurring with impurities from the pressure chamber or the Suck drill bit reliably.

Preferably, the second pump unit is designed as a submersible pump within the second container unit, which is a structurally particularly simple implementation and ensures a permanently reliable maintenance of the water cycle.

So that the water tank device after the production of the core to dispose of its contents (water and environmentally hazardous contaminants) can be disposed of easily to a suitable location, a particularly advantageous embodiment is characterized in that the supply water and / or return water pipe detachable via sealing couplings, in particular Metal sealing couplings, is connected to the drill or the sealing chamber and / or the first and / or second pumping unit / are. This is also true Separation of the supply and / or return line ensures that no hazardous substances escape, because after disconnecting the lines, the connections close immediately due to the sealing couplings.

With the device according to the invention it is easily possible to produce cores having a large diameter, for example, a diameter of 70 millimeters.

The storage volume of the water tank device is preferably in the range between 20 and 150 liters, in particular at 100 liters, so that the water tank device, which is preferably designed to be mobile, can be disposed of for disposal purposes at a reasonable cost to a suitable disposal point.

A particularly advantageous embodiment, which ensures a structurally simple construction with simultaneous performance of a permanently reliable function and accommodates easy disposal, is characterized in that the water container device has an openable and closable cover unit and per chamber (overflow and settling) ever a drain cock (ball valve) are located in the chamber bottom, so that the contents of the water tank device with the contaminants are removed, if necessary, solidified and disposed of and then the water tank device can be refilled with water.

A particularly advantageous embodiment with regard to optimum sealing conditions is characterized in that the device has a vacuum plate on the underside, the sealing unit is connected on the underside to a holding unit attached to the device, the holding unit sealingly pressing the sealing unit onto the ground surface upon activation of the vacuum plate.

A simple cleaning process is ensured by the fact that the first and second container unit each side has an openable and closable drain cock.

Further advantages and features of the invention are given in the claims further specified features and the following embodiment.

BRIEF DESCRIPTION OF THE DRAWING

The invention will be described and explained in more detail below with reference to the embodiment shown in the drawing. It shows:

1 The figure shows a highly schematic representation of an apparatus for producing a core in a floor plate with hazardous material Oberbelag with a core machine and a water storage device, wherein the core drill or the drill bit rinse water is supplied and the accumulating in the field of the drill bit waste water is drawn off with impurities, wherein rinse water and dirty water form a dense water cycle.

WAYS FOR CARRYING OUT THE INVENTION

In the figure is highly schematic an embodiment of a device 10 for producing a core in a bottom plate 50 with a contaminated upper surface 52 shown.

The device has a core drill 12 with a drill 58 with drill bit 16 on that on the top surface 52 can be placed on, can be set in rotational motion and under pressure in the top layer 52 and the bottom plate underneath 50 penetrates and produces a removable cylindrical core.

In the area where the drill 58 or the drill bit 16 on the top surface 52 attaches, the lower end portion of a sealing unit 18 Surrounded by the drill bit sealing ring and water ring), which ensures that the environment of this area is sealed watertight to the outside. At the same time, the sealing unit forms 18 with the surface of the topcoat 52 a sealing chamber 20 connected to a water connection unit 46 is in communication connection, wherein the water connection unit preferably as a metallic sealing coupling for releasably connecting a return water line 62 is trained. In the upper area of the drill 58 is another water connection unit 40 present, which is also designed as a metallic sealing coupling and to a supply water line 60 connected.

The core drill machine 12 is on a vacuum plate 64 arranged and firmly connected to this.

In the lower edge area is at the core machine 12 a cantilevered holding unit 66 firmly connected, the sealing unit 18 on the underside of the holding unit 66 is attached. Before the drilling process is started, the vacuum plate becomes 64 activated, leaving the core machine 12 securely locked on the floor. Activation of the vacuum plate moves the core drill 12 a few millimeters down, which also causes the holding unit 66 is moved down. By this movement, the sealing unit 18 sealingly pressed on the soil surface, so that in this area optimal sealing conditions prevail and can escape any hazardous material during the drilling process.

About the water connection unit 40 gets over the drill 58 in the area of the drill bit 16 Rinse water SPW led, which then within the sealing chamber 20 pending and via the water connection unit 46 and the return water line 62 as dirty water SMW with the impurities resulting from the drilling process 56 is deducted.

The device 10 further comprises a water tank device 22 on, to which the supply water line 60 for rinse water SPW and return water line 62 for dirty water SMW with impurities 56 connected.

The water tank device 22 has a first container unit 24 , which is designed as a settling chamber, and a second container unit 26 , which is designed as an overflow chamber. Between the first container unit 24 and the second container unit 26 is a vertical partition 42 available with a overflow edge on the top 44 ,

In the area of the first container unit 24 Upper side is a first pump unit 28 arranged, which is designed as a peristaltic pump and to which the return water line 62 for dirty water SMW with impurities 56 connected. Alternatively, the peristaltic pump can also be located in the lower side region of the water container device 22 be arranged. About this first pump unit 28 is dirty water SMW from the sealing chamber 20 in the area of the drill bit 16 sucked off and together with the impurities 56 in the first container unit 24 pumped.

Under the action of gravity, the impurities settle 56 in the first container unit 24 in the lower area, leaving at the top of the first container unit 24 of impurities 56 cleaned rinse water is available again. Reaches the water level in the first tank unit 24 the overflow edge 44 the partition 42 , it flows as flushing water (SPW) via (arrow Ü) in the adjacent second container unit 26 ,

On the bottom of the second container unit 26 is a second pump unit 30 present, which is designed as a submersible pump and to the supply water line 60 connected. The second pump unit 30 The rinse water SPW arriving via the overflow Ü in the second tank unit pumps via the feed water pipe 60 via the water connection unit 40 back to the drill 58 , As a result, new rinse water SPW finally returns to the area of the drill bit 16 or the sealing chamber 20 and stands there again as dirty water SMW with impurities 56 on the return water pipe 62 by means of the first pumping unit 28 (Peristaltic pump) back into the first container unit 24 is sucked off.

As a result, a self-contained dense water cycle is present, which ensures that when producing a core no contaminated contaminants 56 get into the environment, so that a hazardous substance pollution of the environment with the consequent possible health damage to the operators can be excluded.

Once the accumulated amount of impurities 56 in the first container unit 24 (Paragraph) reached a predetermined level, a disposal is made.

The water tank device 22 is designed as a mobile unit and in the exemplary embodiment on bearing rollers 48 stored.

In order to carry out the disposal at a suitable location, the supply water line 60 and the return water line 62 at their connections to the core drill 12 on the drill 58 or the sealing unit 18 separated, where at this point existing sealing couplings ensure that no water (SPW, SMW) can escape. Thereafter, the water tank device 22 be brought to the appropriate location for disposal. On the upper side, the water container device has a lid unit 54 , which can be opened in the opening direction Ö, so that the interior of the water tank device 22 , in particular the first and second container unit 24 . 26 , are accessible.

For disposal is in the water tank device 22 located water with pollution 56 taken, for example, cemented by cement, introduced into packaging units and transported to an intermediate or final deposit.

The underside is in both container units 24 . 26 each a drain cock 68 . 70 present, to which for disposal purposes a hose for discharging the dirty water can be connected during cleaning.

The particular advantage of the formation of the first pumping unit 28 as a peristaltic pump is that such a pump can not run dry and reliable suction of dirty water SMW with impurities 56 permanently ensured, especially since it is not a problem, by the peristaltic pump to generate a negative pressure of up to 1.0 bar, which also ensures easy removal of solid contaminants.

The device according to the invention 10 has a robust overall structure, is easy to use and ensures that in case of use no health-endangering contaminants 56 that can be produced while producing a core, can end up in the environment and cause damage to health.

Claims (15)

Method for producing a core in a base plate ( 50 ) with contaminated material / top surface ( 52 ) with a core drill ( 12 ) with drill ( 58 ) with drill bit ( 16 ), whereby the drill bit ( 16 ) Rinse water (SPW) via a feed water line ( 60 ), - characterized in that - a dense water cycle is formed in which the area of the drill bit ( 16 ) watertight of a sealing unit ( 18 ), which is the drill bit ( 16 ) supplied rinse water (SPW) as dirty water (SMW) with impurities ( 56 ) from one between the sealing unit ( 18 ) and the top surface ( 52 ) sealing chamber formed during the drilling process ( 20 ), the dirty water (SMW) is subsequently removed from the contaminants ( 56 ) and the rinse water (SPW) again obtained the drill bit ( 16 ) is supplied. A method according to claim 1, - characterized in that - the suction of the dirty water (SMW) from the sealing chamber ( 20 ) of the sealing unit ( 18 ) a peristaltic pump is used which has a negative pressure, in particular up to 1.0 bar, in the sealing chamber ( 20 ) and via a return water line ( 62 ) sucks the dirty water (SMW) and a water tank device ( 22 ) for separating the impurity ( 56 ) from the dirty water (SMW) feeds. A method according to claim 1 or 2, - characterized in that - the dirty water (SMW) formed as a settling chamber first container unit ( 24 ), in which the contaminant ( 56 ) to the bottom of the first container unit ( 24 ) and thereby cleaned dirty water (SMW) as rinse water (SPW) via an overflow (Ü) in a second container unit ( 26 ) and from this again the drill bit ( 16 ) via a second pump unit ( 30 ) and the supply water line ( 60 ) is supplied. Method according to one or more of the preceding claims, - characterized in that - before the drilling operation, a vacuum plate located on the underside ( 64 ) is activated, whereby the on a holding unit ( 66 ) lower-side sealing unit ( 18 ) is pressed sealingly on the soil surface. Device for producing a core in a base plate ( 50 ) with contaminated material / top surface ( 52 ) by means of a core drill ( 12 ) with drill ( 58 ) with rotating drill bit ( 16 ), whereby the drill bit ( 16 ) Rinse water (SPW) is supplied, - characterized in that - a sealing unit ( 18 ) in the area of the drill bit ( 16 ), which sealingly on the top of the bottom plate ( 50 ) or on the top surface ( 52 ) is placed and thereby with this a sealing chamber ( 20 ), - a water tank device ( 22 ) with a first container unit ( 24 ) and a second container unit ( 26 ) is present, - to the sealing chamber ( 20 ) via a return water line ( 62 ) a first pumping unit ( 28 ), which pollutes the dirty water (SMW) ( 56 ) from the sealing chamber ( 20 ) into the first container unit ( 24 ), wherein the first container unit ( 24 ) is formed as a settling chamber, in which the impurities ( 56 ) are separated from the dirty water (SMW), - between the first and second container unit ( 24 . 26 ) a partition wall ( 42 ) with overflow edge ( 44 ) is present, via which in the first container unit ( 24 ) purified waste water (SMW) as rinse water (SPW) of the second container unit ( 26 ), - in the second container unit ( 26 ) a second pumping unit ( 30 ) is present, the rinse water (SPW) via a flow line ( 60 ) the drill ( 58 ) with drill bit ( 16 ) again, so that a total of a tightly closed water cycle between rinse water (SPW) and dirty water (SMW) is present. Device according to claim 5, - characterized in that - the first pump unit ( 28 ) is designed as a peristaltic pump. Apparatus according to claim 6, characterized in that - the first pump unit ( 28 ) is designed so that it can generate a vacuum up to 1.0 bar. Device according to claim 5, - characterized in that - the second pump unit ( 30 ) as a submersible pump within the second container unit ( 26 ) is arranged arranged. Device according to one or more of claims 5 to 8, - characterized in that - the supply water and / or return water line ( 60 . 62 ) releasably via sealing couplings, in particular metal sealing couplings, to the drill ( 58 ) or the sealing chamber ( 20 ) and / or the first and / or second pump unit ( 28 . 30 ) is / are connected. Device according to claim 5, - characterized in that - the diameter of the drill bit ( 16 ) is in the range between 30 to 80 millimeters, in particular at 70 millimeters. Device according to claim 5, - characterized in that - the storage volume of the water tank device ( 22 ) in the range of 50 to 150 liters, especially at 100 liters. Device according to claim 5, - characterized in that - the water tank device ( 22 ) is mobile. Device according to claim 5, - characterized in that - the water tank device ( 22 ) an openable and closable lid unit ( 54 ), so that the contents of the water tank device with the impurities ( 56 ) are removed as required, solidified and disposed of and then re-filled with water. Device according to one or more of claims 5 to 13, - characterized in that - the device on the underside of a vacuum plate ( 64 ), the sealing unit ( 18 ) on the underside of a holding unit attached to the device ( 66 ), the holding unit ( 66 ) upon activation of the vacuum plate ( 64 ) the sealing unit ( 18 ) presses sealingly on the ground surface. Device according to one or more of claims 5 to 14, - characterized in that - the first and second container unit ( 24 . 26 ) on each side an openable and closable drain cock ( 68 . 70 ) having.

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