FR2669059A1 - DEVICE FOR TRANSFERRING MATERIALS, DEVICE COMPRISING SUCH DEVICE AND METHOD FOR CURING SEWERS. - Google Patents

Abstract

The invention relates to a device for transferring materials between an inlet and an outlet, comprising a housing. It comprises - a hub (8) rotating around an axis (6), - hammers (4) mounted on said hub (8) at the periphery thereof, each pivoting about an axis (7) substantially parallel to the axis of rotation (6) of the hub (8) to allow the hammers (4) to approach or move away, - means of connection to said outlet (5) of a suction unit. The invention also relates to a structure cleaning machine comprising a transfer device (1) as described above as well as a motor, in particular hydraulic, ensuring the drive of the machine and / or the transfer device. (1).

Description

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  The present invention relates to a material transfer device, to a machine comprising such a device and used in particular for cleaning works, and a method of cleaning works

  such as sewers using such a machine.

  There are various methods of cleaning works. In the traditional process, a suction unit placed on the surface is connected by a large diameter pipe to the deposits to be evacuated. The loading of the pipe is carried out by operators using manual means such as shovels. the dimensions are too large to penetrate the pipe or which may clog said pipe, in case they succeed in entering, are removed manually by the operators in the book These objects are then manually raised to the surface by a In spite of these precautions, the suction pipes are frequently plugged In order to unblock them, it is imperative to dismantle various sections of the pipe, which is

a long and painful operation.

  The "FAYOLLE" method proposed the extraction of sands by buckets, their drying by a helical screw followed by their bagging The evacuation of sandbags is carried out by an aerial conveyor up to the manhole The bags are raised to the surface

  then evacuated by trucks This process is particularly expensive.

  The "SIELWOLF" process has been used in Federal Germany.

  The deposits to be evacuated were emulsified by injection of water at a pressure of 10 bars. The emulsion was milled by a conventional grinder with the rejection of objects that were too hard, in the structure.

  ensured the separation of uncrushed objects with a diameter greater than 6 mm.

  The deposits were drained and then evacuated The "SIELWOLF" process is thus of a complex implementation and difficult to apply in France.

  because of the specificities of the works and the materials (dep 8 ts) encountered.

  All known processes are of a high cost of implementation and include workstations in particularly difficult situations In addition, the process "SIELWOLF" by the presence of the separation screen, introduced olfactory nuisance particularly

difficult for local residents.

  The main subject of the present invention is a device for transferring materials between an inlet and an outlet, comprising a housing, characterized in that it comprises a hub rotating about an axis, hammers mounted on said hub, at the periphery thereof, each pivoting about an axis substantially parallel to the axis of

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  rotation of the hub to allow the hammers to move closer or apart, connection means to said outlet of a suction group. Such a transfer device is particularly suitable for

  ensure the supply of a discharge pipe deposits of a work.

  The invention also relates to a machine that can be used in particular for cleaning works, characterized in that it comprises a material transfer device as described above and a motor, in particular a hydraulic motor, ensuring the training of the machine and / or the

transfer device.

  The invention also relates to a method of cleaning works, characterized in that it comprises the steps of: to penetrate into a structure, particularly at a sand chamber, a machine as described herein above, connect an evacuation pipe to a cistern and a suction group placed on the surface, start the suction unit, advance the machine, in particular in response to the emission, from the advanced remote control signal surface

of the machine.

  The material transfer device according to the present invention makes it possible to automate the loading of the exhaust pipe of dep 8 ts, in particular for the purpose of cleaning works It removes the workstations in the work in difficult situations, decreases the cost of evacuation of these dep 8 ts It improves the efficiency of cleaning by grinding objects of large diameters of limited hardness and transfer into

  the discharge pipe objects small diameters of great hardness.

  The invention will be better understood by means of the description

  FIGS. 1 is a cutaway perspective view of an embodiment of the transfer device according to the present invention; Figures 2a and 2b are diagrams explaining the operation of the device of Figure 1; Figure 3 is a perspective view of an embodiment of cleaning machine works according to the present invention; FIG. 4 is a perspective view illustrating the

  method of cleaning works according to the present invention.

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  In FIGS. 1 to 4, the same references have been used for

designate the same elements.

  FIG. 1 shows an example of a transfer device 1, comprising a substantially cylindrical casing 2 inside which is placed a mobile assembly made up of a plurality of hammers 4 fixed to the periphery of a hub 8 In the example illustrated in FIG. 1, the moving element comprises six hammers 4 regularly distributed over the periphery of the hub 8. The hammers 4 of the device 1 according to the present invention have a turbine fin shape which promotes the circulation of the rotor. According to the arrows 9 advantageously, the hammers 4 comprise knives 40 for tearing, in particular sheets of plastic material The hub 8 is rotated about an axis 6, advantageously in the direction of the arrow 29, by means motors not shown The hammers 4 are pivotally mounted on the hub 8 about axes 7 substantially parallel to the axis 6 The device 1 comprises an inlet 3, advantageously located sen at the hub 8, at the

  center of the casing 2, and an outlet 5 placed radially.

  In operation, the hub 8 is rotated about the axis 6 The device 1 is traversed by a flow of air between the inlet 3 and the outlet 5 symbolized by the arrows 9 Advantageously, the air flow is generated in particular by a suction unit external to the transfer device 1 The material to be transferred, for example in a pipe, is driven by the air flow and enters the device 1 at the hub 8 The rotation of the hub 8 and the associated hammers 4, causes the movement of the material towards the periphery of the device 1 The fragmented material is driven without significant change to the output 5 Massive parts of large dimensions relative to the size of the device 1 are ground, broken or dilacerated according to their nature As the piece has too much resistance to be crushed, broken or shredded, it is directly transmitted to the outlet 5 The properties of the device 1 according to the meadow In particular, this invention is due to the freedom of movement of the hammers 4 with respect to the hub 8. Thus, as can be seen in FIG. 2, the distance d between the ends of the hammers 4 is variable. The hammers 4 can move apart to leave Pass a large part Depending on its strength, this part will be ground between two hammers 4 or between a hammer 4 and the housing 2, or will be transferred to the outlet 5 For example, through the inlet 3, penetrates a tool such as a hammer This hammer could clog the drain pipe connected to the outlet 5 The handle of the hammer is ground So the pipe is not likely to be blocked By cons, the metal mass of the hammer has a

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  resistance too great to be crushed or broken by the device 1 according to the present invention as illustrated It will be transferred by the

outlet 5 to an exhaust pipe.

  A can or oil can penetrating the device 1 through the inlet 3, is ground and / or shredded before emerging by

the exit 5.

  A brick is ground, at least on its periphery, or broken, and its dimensions will be made compatible with the diameter

internal discharge pipe.

  Advantageously, the area of the section of the entry 3 is

  greater than the area of the outlet section 5 and the outlet pipe.

  In FIG. 3, there can be seen a device 10 for sewer cleaning or similar works, comprising a transfer device 1 according to the present invention. The apparatus 10 comprises, mounted on a tracked chassis 11, a transfer device 1. whose output 5 is connected to a pipe

evacuation 15.

  Advantageously, the machine 10 according to the present invention is self-propelled For example, it comprises a motor 12 electric, thermal, or, preferably hydraulic In the example shown, the machine 10 comprises a gear 13 to increase the available torque The motor 12 ensures the advancement on the tracks 14 of the machine 10 and / or the rotation of the hub 8 of the device 1. The suction of the deposits is advantageously favored by the presence of various tools such as, for example, mounted suction cones. at the inlet 3, a high-pressure lance 17, or buckets

  and manipulator arms, not shown in the figure.

  Advantageously, the machine 10 according to the present invention is remotely controllable It comprises data acquisition means 18, for example a television camera 19, and lighting devices 20 An umbilical pipe 16 provides power to the machine It supplies, for example, the electric current necessary for the operation of the data acquisition device 18, the water under high pressure at the lance 17 and

pressurized oil to the engine 12.

  FIG. 4 shows the implementation of an exemplary method of cleaning a sand chamber 26 of a structure 24. A machine 10 according to the present invention is lowered by a manhole 25 and disposed on the bottom of a sand chamber 26 A discharge pipe 15 is connected to a tank 22 via a suction unit 27 An operator present on the surface, for example in a cabin 23, supervises and remote control advancement of the machine 10 with evacuation of deposits of the sand chamber 26 to the tank 22 It controls the advancement of the machine 10 and the possible use of tools to promote the suction Similarly, it can cause a maneuver of the machine 10 or a tool to spread an object really too bulky to be treated For example, a bicycle is placed on the side by a manipulator arm, not shown. Advantageously, a mobile unit 21 is used which groups together the operator's cabin 23 and the utilities, which can be separated.

  where appropriate, the rotation vehicle) the pumping unit 27 and the tank 22.

  In the advantageous example illustrated in FIG. 4, the unit 21 is mounted

  on a road chassis or on a truck.

  Thus, when the tank 22 is full, the discharge pipe 15 is disconnected, the road transport is carried out from the tank 22 to a controlled discharge where it is emptied. On its return, the pipe 15 can be connected to the same tank 22 or, to avoid interrupting the

  treatment, another tank 22 present on a construction site.

  As can be seen in FIG. 4, the normal implementation of the method according to the present invention, by the use of a remotely controlled self-propelled machine, making it possible to treat almost all the deposits present in a sand chamber 26. a structure 24, eliminates or reduces the painful human interventions inside the structure. Moreover, the cleaning of the structure is accelerated. The method according to the present invention makes it possible to reduce the duration during which the structure is out of operation. service. In an exemplary embodiment, the hub 8 of the transfer device 1 rotates at an angular speed of between 2000 and 3000 revolutions / minute, for an air flow rate ranging between 3000 and 10000 m / h and an absolute pressure of between 0, 7 and 0.4 bar (corresponding substantially to a depression of 0.3 to 0.6 bar) In another example, a vacuum was used.

  98%, which corresponds substantially to an absolute pressure of 0.02 bar.

  Depending on their nature, the deposits were evacuated with the flow rates higher than the flow rates of the current systems using drain pipes 15 of

  internal diameter of between 100 and 200 mm (typically 150 mm).

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Claims (7)

  1 material transfer device between an inlet and an outlet, comprising a housing, characterized in that it comprises a hub (8) rotating about an axis (6), hammers (4) mounted on said hub ( 8) at the periphery thereof, each pivoting about an axis (7) substantially parallel to the axis of rotation (6) of the hub (8), to allow the hammers (4) to approach or discard, connection means to said output (5) of a group suction (27).   2 Device according to claim 1, characterized in that it comprises means for connecting a discharge pipe (15) of   materials between the outlet (5) and the suction unit (27).   3 Device according to claim 1 or 2, characterized in that the inlet (3) is placed substantially at the hub (8) and   that the outlet (5) is placed radially on the housing (2).   4 Device according to any one of the claims   preceding, characterized by the fact that the area of the section of the entrance   (3) is greater than the area of the section of the outlet (5).   Device according to any one of the claims   characterized in that the hammers (4) comprise knives (40).   6 Apparatus for cleaning works, characterized in that it comprises a transfer device (1) according to any one of   preceding claims and a motor (12), in particular hydraulic,   driving the machine (10) and / or the transfer device (1).   Machine according to claim 6, characterized by the fact   it includes remote control means.   8 Machine according to claim 6 or 7, characterized in that it comprises data acquisition means (18), in particular a television camera (19).   9 Machine according to claim 6,7 or 8, characterized in that it comprises tools facilitating the loading of the inlet (3) of the device (1) such as suction cone, buckets, manipulator arm, or   water lance under high pressure (17).   A method of cleaning works, characterized in that it comprises the steps of: penetrating into a structure (24) in particular at a sand chamber (26) a machine (10) according to any one of the Claims 6 to 9, 6 - 7 2669059   connect an evacuation pipe (15) to a cistern (22) and a suction unit (27) placed on the surface, switch on the suction unit (27), advancing said machine (10).