Tank for municipal vehicle, comprising means for sucking and discharging turbine blow-out air

Abstract

The invention relates to a container for a municipal vehicle, consisting of a chassis (1) capable of accommodating a cab (2), a collection container (3) and a suction duct (4), said container comprising means for sucking and discharging the air blown out by a centrifugal turbine (7) driven by a motor (11), said turbine (7) being arranged in the container (3), and an inclined angle of 0 to 45 degrees with respect to the horizontal plane, located within the protective housing (8) allowing air to circulate only through its upper end (8e) and lower end (8s), the air entering from the upper end (8e), including two different inlets (8ed, 8eg), and being pushed back by the lower end (8s) to guide the blown air to the top or bottom of the container box. The device for discharging the air blown out of the turbine (7) comprises at least one valve (6) which is alternately opened or closed and is used for controlling the discharging of the sucked air to the top or the bottom.

Description

[0001] The invention relates to a container comprising means for taking in and discharging turbine blown air, intended for use in a road vehicle, such as a city sweeper or dust collector.

[0002] These vehicles consist essentially of an articulated or non-articulated chassis with at least two axles, equipped with cleaning devices such as brushes, suction devices, containers for receiving suction residues, optional water reservoirs of sufficient capacity and a control station.

[0003] The chassis actually consists of two half chassis, the front half is the suction device, the rear half is the container box and the electric components. Other tools can be installed behind the chassis according to the situation.

[0004] The suction device comprises a suction duct with a nozzle towards the ground at its lower end and with an upper end cooperating with the suction turbine of the vehicle. In a known manner, a depression is formed in the container when it is necessary to suck in waste or dust from the ground or from the area of ​​the vehicle to be treated. The waste or dust is usually moistened before suction in order to facilitate its transfer to the bottom of the container box, which also makes it possible to bind it and avoid the dust being discharged through the turbine.

[0005] Document No. EP2299000 gives an example of a container box of this type, which describes a container box for receiving garbage collected by a road vehicle, which container box includes a chassis, a cab, a cleaning device and a suction device, the suction device consisting of a turbine and a suction duct, which are associated with a particle filtering and separation device inside the container box.

[0006] In vehicles of the known type, the circulation of air sucked into and discharged from the turbine is not ideal. Firstly, the dust-laden dust must be discharged to the outside, and the filtered dust cannot be reused in the suction circuit, for example for cooling the motor of the turbine. However, if the vehicle is used for a long time, its efficiency decreases with the use time, so it is necessary to provide means for cooling the motor, which complicates the design of the vehicle and increases the production costs.

[0007] Secondly, in all known vehicles, air is discharged upward or downward through an air path, which is predetermined during the vehicle design phase and cannot be modified. This may cause difficulties due to the configuration of the site, and even in some places the air discharge may have to be temporarily interrupted due to the inability to blow air.

[0008] Document No. DE102016102299 is the closest prior art known to the applicant. The document discloses a container for road vehicles, which consists of a chassis with a cab, a collection box, and a suction pipe, including a device for sucking and exhausting dirty air blown out by a circular turbine driven by a motor in a protective shell, with an inclination angle with the horizontal plane between 0 and 45°, so that the blown air flows upward or downward from the container box, and the shell only allows air to circulate from the upper and lower ends, and the air entering from the upper end is discharged from the lower end.

[0009] In order to remedy the above disadvantages, the present invention proposes a container box for urban road vehicles, which includes air intake and exhaust devices that do not hinder the capacity or efficiency of the turbine and whose internal air passages can be modified.

[0010] To this end, the container box according to the invention is connected to a turbine, which is installed in a geometrically modified protective shell inside the container box. The top of the container box is closed by a two-part cover. The intake air can be discharged upward or downward through a valve, and the blown air can cool the motor by generating a vortex effect.

[0011] The present invention may be better understood with reference to the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of a road vehicle and its components.

[0013] Figure 2 A waste collection container box designed in accordance with the present invention is shown.

[0014] Figure 3 It is a top view of the container box.

[0015] Figure 4 is a side cutaway view of a container box showing the air circulation in the container box with upward discharge.

[0016] Figure 5 and[ Figure 4 ]Same view shown but with venting directed downwards.

[0017] Figure 6 is a top view of the turbine, showing the circulation of the blown air due to the vortex effect.

[0018] Figure 1 A conventional road vehicle is represented in which the container box of the present invention is installed.

[0019] In a known manner, the vehicle consists of a chassis (1) divided into two parts: a front part (1a) and a rear part (1b). The front and rear parts of the chassis refer to the direction of travel of the vehicle in normal operating mode. However, it should be pointed out that the container box designed according to the invention can be installed on a non-articulated chassis with only slight modifications.

[0020] The front part (1a) of the chassis (1) has a cab (2) through which the operator can control and maneuver the vehicle and control different attachments to achieve cleaning functions in a determined area.

[0021] In front of the cab (2) in the lower part of the chassis (1), close to the ground, there are some cleaning devices, which are neither described in detail nor shown here, which are mounted on a structure and can be moved. For example, it can be a rotating brush.

[0022] The rear part (1b) of the chassis is provided with a container box (3) and a suction device for collecting garbage or dust from the ground, and the suction device cooperates with the container box (3) through a suction pipe (4).

[0023] Figure 2 This is an isolated view of a container box designed according to the present invention. The container box (3) consists of a stepped volume, the top of which is closed by a cover plate (5). The container box (3) is divided into two parts, namely a front part (3a) and a rear part (3b), including an air inlet (10) and two exhaust holes (12).

[0024] The term "tank front" is to be understood as the part of the tank in which the turbine and the suction device are to be installed and which is situated opposite the cab of the road vehicle. The term "tank rear" is to be understood as the part situated opposite and in which the suction residues are to be collected.

[0025] It should be noted that, if in the exemplary embodiment shown in the figures the container box (3) is trapezoidal in shape, this does not constitute a decisive feature of the present invention.

[0026] The cover plate (5) consists of two parts (5a, 5b), which respectively cover the front part (3a) and the rear part (3b) of the container box (3).

[0027] from[ Figure 2 ]It can be seen that the front part (5a) of the cover plate (5) is fixed.

[0028] The rear part (5b) of the cover is hinged by a hinge (5c) and can be tilted upwards about an axis perpendicular to the longitudinal axis of the container box and allows access to the container for collecting waste and dust.

[0029] The rear portion (3b) of the container box (3) is a container for receiving waste or dust collected during the cleaning operation.

[0030] On the front wall of the front part (3a) of the container box, there is a downward opening for a suction pipe (4) to pass through. The lower end of the suction pipe, that is, the end opening outward, can be connected to a suction nozzle (not shown).

[0031] Figure 3 The diagram shows the top of the container box (3) and the various elements that can collect waste or dust to the rear part of the container box (3b) which serves as a waste and dust collection container.

[0032] The centrifugal circular turbine (7) is installed at the front part (3a) of the container box (3) at an angle of inclination between 0 and 45 degrees relative to the horizontal plane. The protective housing (8) separates it from the outside and other parts of the container box. It is connected to other parts of the container box only through its two ends (8e, 8s) for air circulation. More specifically, the air entering through the upper end (8e) composed of two inlets (8ed, 8eg) is transported by the lower end (8s), as shown in FIG. Figure 3 and 4 .

[0033] The "upper" and "lower" here refer to the position of the container box and the protective shell contained therein on the horizontal plane.

[0034] The turbine (7) is driven by a motor (11) as shown in the figure. Figure 4 and 5 .

[0035] The protective shell (8) can increase the suction threshold of the turbine, thereby improving the suction performance.

[0036] To this end, its geometry was improved to increase productivity.

[0037] The two inlets at the end (8e) of the housing (8), one on the right side (8ed) and the other on the left side (8eg), are differentiated to create a rotation of the inlet intake air inside the housing (8).

[0038] This differentiation is achieved through different shapes, different sizes or different aerodynamic shapes.

[0039] When the vehicle is moving forward, the right and left hands point to the sides of the vehicle respectively.

[0040] The direction of rotation of the air thus generated depends on the direction of rotation of the turbine (7), the inlet surface corresponding to the direction of rotation of the turbine being larger than the surface of the other inlet.

[0041] Of course, if the direction of rotation of the turbine is opposite, the size ratio between the inlets (8ed, 8eg) will also be opposite.

[0042] This improved geometry can significantly increase the efficiency of the turbine.

[0043] In order to suck in the waste, negative pressure is generated in the front part (3a) of the container box (3), so that the waste can be collected and introduced into the container box.

[0044] Dust is sucked up at the lower end of the duct (4) to be transported to the upper end of the other end thereof, which leads to the rear part (3b) of the container box serving as a collection container.

[0045] An important feature of the present invention is that at least one valve (6) is provided for directional circulation of the air sucked in and then discharged from the housing (8), said valve being arranged below the air outlet (8s) in the discharge sleeve (13) outside the container box (3).

[0046] exist Figure 4 and 5 In the example shown there are two valves (6, 6'), one of which is open when the other is closed, to control the discharge of air upward or downward through the discharge hole (12).

[0047] The second valve (6') is located above the gas outlet (8s).

[0048] Figure 4 The side section shows the air circulation in the container box (3), with valve (6') open and valve (6) closed to draw air upwards.

[0049] Figure 5 At this point it is shown that the air drawn downward is discharged through valve (6) and valve (6') is closed to prevent the air drawn upward from the container box (3) and the discharge hole (12) from passing.

[0050] The exhaust in front of the container box (3) can be carried out downward or upward by means of an operating lever (not shown), which can control valves (6) and (6') to open or close respectively according to the required exhaust direction.

[0051] According to an advantageous variant, only one valve (6) can be provided. When the valve (6) is open, air delivered from the housing to the outlet (8s) located above the valve can pass through and be exhausted to the ground. Conversely, when the valve (6) is closed, the air exhausted from the outlet (8s) must rebound on the closed valve and be pushed upwards.

[0052] Whether the sucked and filtered air is discharged upward or downward may be determined by the nature of the waste being treated or the construction of the site.

[0053] Therefore, if vehicles circulate in residential areas, or if the area above the area to be treated includes tree branches or parts of street furniture, it may be necessary to use the downward exhaust option to avoid any degradation such as that which may be associated with the fall of dry flakes caused by shrinkage, which would then need to be picked up, or to avoid the projection of residual dust contained in the exhaust air into residential locations.

[0054] Conversely, downward discharge may increase noise reverberation and dust emission, depending on the nature of the soil being treated.

[0055] Therefore, the container box of the present invention can adjust the exhaust volume of the intake air according to environmental constraints.

[0056] When these functions are not available, an upward exhaust option may be chosen so that the filtered exhaust air can perform the turbine engine cooling function as described below.

[0057] In order to separate the dust from the air entering the turbine, it is necessary to reduce the speed of the intake air by creating a mechanical gyroscopic effect and to increase the weight of the waste or dust by means of a water mist vaporizing on the collected waste.

[0058] The air is sucked in through a nozzle (not shown) arranged at the end of the free part (called the lower part) of the duct (4) which leads from the lower part of the container box (3) to the free air.

[0059] Due to the suction force generated by the turbine (7), the collected air is transported to the other end, i.e. the upper end, of the duct (4), which opens upward at the rear of the container (3b) and acts as a container.

[0060] At this level, devices are used that enable the generation of water mist, which are known and therefore not shown here. The wet dust forms a mist during the rotation, which intensifies the effect of gravity and throws it downwards, that is, to the bottom of the container box (3) which serves as a waste collection container.

[0061] After the dust is separated from the inhaled air, some particles will still remain and these particles must be filtered before being discharged to the outside.

[0062] To this end, the dust-free suspended air is filtered through a filter mesh (9) which is folded in an accordion-like manner to increase its useful surface, thereby making it possible to reduce the diameter of the outlet opening.

[0063] As can be seen from the figure, the grid (9) is connected to the interior of the shell (8), as shown in FIG. Figure 4 and 5 .

[0064] The filtered air is then blown into the housing (8) and the operator can choose to discharge it upwards or downwards from the containment box.

[0065] As mentioned above, if the air flows upward ([ Figure 4 ]), it will be discharged through the exhaust hole (12), if the air flows downward ([ Figure 5 ]), it will be discharged to the outside under the vehicle chassis.

[0066] An essential feature of the invention is that the sucked-in dirty air can be used to cool the motor (11) of the turbine (7).

[0067] The centrifugal annular turbine (7) is constructed and arranged so that it can generate a vortex effect at its outlet by generating an air call, so that the air re-enters through the air inlet (10) to cool the motor (11) of the turbine (7).

[0068] The vortex effect corresponds to the vortex generated in the airflow, and the airflow is drawn into the interior of the container box at a constant angular velocity.

[0069] Figure 6 It illustrates the circulation of air under this vortex effect.

[0070] The dirty air blowing along the annular periphery of the turbine (7) to its sides is guided to be discharged through two holes (14) formed on both sides of its rear part, and its arrangement can produce a vortex effect, so that clean air is sucked through the grid (9) and can then be used to cool the motor (11) of the turbine (7).

[0071] Number prompt list

[0072] 1. Framework

[0073] 1a. Front-end

[0074] 1b. Backend

[0075] 2. Cab

[0076] 3.Container box

[0077] 3a. Front of container box

[0078] 3b. Rear of container box

[0079] 4. Suction pipe

[0080] 5. Cover

[0081] 5a. Front of cover

[0082] 5b. Rear of cover

[0083] 5c. Lid hinge

[0084] 6. Lower valve

[0085] 6'. Top valve

[0086] 7. Turbine

[0087] 8. Protective shell

[0088] 8e. Shell air inlet

[0089] 8ed.Right air intake

[0090] 8eg. Left air intake

[0091] 8s. Shell air outlet

[0092] 9. Filter Grid

[0093] 10. Air inlet of container box

[0094] 11. Engine

[0095] 12. Expel the air from the container

[0096] 13. Emission chamber

[0097] 14. Discharge port

Claims

1. A container box for a road vehicle, comprising a chassis (1), a cab (2), a collecting container box (3), a suction pipe (4), a device for sucking and exhausting dirty air blown by a circular turbine (7) driven by a motor (11), the turbine (7) being mounted in the collecting box (3) in a protective casing (8), the turbine (7) being mounted on the protective casing (8) in the container (3), the protective casing (8) being inclined at an angle of between 0 and 45° with respect to the horizontal plane, at least one valve (6) being used to direct the blown air above or below the water tank, the protective casing (8) only allowing air to circulate through its upper end (8e) and lower end (8s), the air entering from the upper end (8e), the upper end comprising two inlets (8ed, 8eg), characterized in that The two inlets (8ed, 8eg) at the end (8e) of the housing (8) are different so that the air sucked into the air inlet can rotate in the housing according to the rotation direction of the turbine (7), and the surface of the inlet corresponding to the rotation direction of the turbine is larger than the surface of the other inlet.

2. The container box according to claim 1, characterized in that The device for sucking in and exhausting the dirty air blown out from both sides of the turbine (7) along its circumference comprises two holes (14) formed on both sides of the rear part of the turbine, and arranged so that the air can re-enter through the hole (10) to cool the motor (11) of the turbine.

3. The container box according to claim 1 or 2, characterized in that: The device for discharging the air blown out by the turbine (7) comprises at least one valve (6) which is arranged below the air outlet (8s) in the discharge sleeve (13) outside the container box (3).

4. The container box according to claim 3, characterized in that The device for discharging the air blown out by the turbine (7) comprises a second valve (6') located above the air outlet (8s), and when the valve (6) is open, the valve (6') is closed, and vice versa.

5. Container box according to one of the preceding claims, characterized in that The interior of the housing (8) communicates with the rear portion of the container box (3) through a filter mesh (9).

6. The container box according to claim 5, characterized in that The filter grid (9) is folded in an accordion shape.

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