DE2030150A1 - Device for cleaning the filters of the suction device of a street cleaning machine working with suction - Google Patents

Description

Dr. A. Mental ²⁰³⁰¹⁵ °

Dipl.-Ing / V /. Dahlke

Paientanwälfe _l6> J _un i 1970

Refrath near Cologne Hg./R.

Celestial 137

LE MATERIEL DE VOIRIE 92- COURBEVOIE, France

"Device for cleaning the filter screens of the suction device of a working with suction Street cleaning machine "

You can sweepers used to clean roads take advantage of the negative pressure in a suction line that ends at a reasonable distance from the ground to suck up waste that has been spread out on the street or in piles

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The amount of air required to achieve a good suction effect are essential in that it is generally not possible to have a sufficient air filter area in the vehicle to be provided because the waste is moistened and because the capacity of the dirt receptacle is used as a clarification vessel.

Certain light dirt, such as paper, leaves, etc., is, however carried along by the air flow, so that grids must be provided to remove this dirt from the air flow » However, these grids get dirty, so that it is again necessary to clean them.

The aim of the invention is to create a device for permanent cleaning which, however, is partly automatic is completed by manual control. For this purpose, the container is equipped with a freely movable grid and with a device for suddenly changing the amount of the air drawn in, causing the grille to collide, which frees it from the accumulated dirt The container can also be equipped with an additional manual control that pushes or shakes the grilles machine turned off.

In a special embodiment of the facility is the

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the fan separating and arranged for example in the upper part of the container grids made of fine mesh associated with a device which can oscillate about a horizontal transverse axis and which is located close to the partition grille and a large-meshed grid and a 'heavy flap, both of which are in such an angular position to each other that they assume a static equilibrium position when the machine is at a standstill, with the large-meshed grid with Stops is provided ", which strike against the partition grille when the air flow is switched on, creating the large-meshed Grille is pivoted from its rest position against the partition grille, while switching off the air flow the valve returns to its equilibrium position.

The pivot axis of the large-meshed grille and the flap existing unit can be connected to a hand lever located outside the container

By hitting the stops on the large-meshed lattice the dirt particles are released from both of them against the separating grille Grids and fall down into the container.

The device for switching the air flow on and off in the

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According to a further feature of the invention, the container can be formed by a movable flap which is located in the suction line is arranged, whereby switching the fan on and off when the grilles are not to be cleaned required 1st.

In the drawing, an embodiment is shown, which a street cleaning machine schematically and partially in Section illustrates.

A vehicle 1 carries a sealed container 2 which has a partition 3 in its upper part. A line 4 opens into the container and has an outlet nozzle at the bottom end. 5 carries and comprises a movable flap 6 which is controllable by a handle 14.

A fan 7 arranged at the end of the upper partition sucks air out of the container and in this way creates the negative pressure required to suck in dirt near the nozzle 5. A fixed grid 8 with fine mesh prevents the entry of light objects into the intake duct 15 of the fan 7. A Grids 9 with large meshes and a flap 10 are firmly open

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an axle 11 mounted which is rotatably mounted in the walls of the container. The axis carries outside the container a hand lever 12. The frame of the grid 9 carries "in the

9.

In the embodiment shown in the drawing, several stops 13t which can strike against the grid 8. Finds through the line 4 the container 2 and the separation no air flow instead, either because the fan 7 is switched off is or because the flap 6 is closed, the grid 9 and the flap 10 associated therewith take a static equilibrium position, which is illustrated with dash-dotted lines.

When the air flow is switched on, the flap 10 is pivoted by this, which rotates the axis 11 until the stops 13 strike against the grille 8, whereby this is freed from the dirt stuck in its mesh. The grid 9 also receives a shock, whereby this is also cleaned.

By means of a reverse maneuver, i.e. by switching off the air flow, the grille swings in the direction of its Gleiohgewiohtsstteilung and the dirt part • the grille 8 fall into the container.

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The grids can also be cleaned by swiveling the hand lever 12 can be effected.

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Claims (6)

Claims 1.! Device for.cleaning the filter sieves for the intake air in a container of a suction street cleaning machine , characterized by a freely positioned transverse axis (T1) around a horizontal swingable unit, the egg © grid (9) with large meshes and a heavy flap (1O) standing at an angle to this and which in the container (2) in the vicinity of the The grille separating the intake duct (15) of the fan (8) is with fine mesh, and by means (6, 14) for interrupting and releasing the air flow through one connecting the suction nozzle (5) to the container (2) Line (4). 2. Device according to claim 1, characterized in that that the swing axis of the unit (9, 10) on the outside of the container (2) has a hand lever (1O) wearing. 0098 8 2/0264 3. Device according to claim 1 and 2, since you raw * ge - :. indicates that the grid (9) and the Flap (10) comprehensive device when the air is switched off « stroin in an inactive below the separating grid (8) ■; lying static equilibrium position. Ί, Voi ^ rd rectification according to claim 1 to 3 t thereby g- e · =>". If e η η s eich η et that the large-meshed grid (9) is provided with stops (13) ₅ which when the- , Hit Luftstronies against the racing grille (8) » 5. Apparatus according to claim 1 to Ί, characterized in that the device for interrupting and releasing the air flow in the line (k) connecting the nozzle (5) to the container (2) has a flap (6) controllable by a hand lever (i4) ) includes. 6. Apparatus according to claim 1 to 5 »characterized in that the container (2) in his obex'en part of a section in front of the fan (7) includes the through © in inclined fine-meshed sieve (8) is closed »that in the vicinity of the free swinging Unit lies. 00 9'8 82/0264