KR101970624B1 - Street cleaning vehicle using filtering air for pulsing work - Google Patents

Abstract

According to an embodiment of the present invention, a road dust suction cleaning vehicle using filtering air for pulsing work comprises: a vehicle body; a suction unit which is mounted on the vehicle body, and sucks foreign substances existing on a road; a blowing force generation unit to supply a suction force to the suction unit; a foreign substance processing unit having a plurality of loading units to process foreign substances sucked from the suction unit in multiple stages; a fine filter unit wherein filtered air from a filter module arranged on the foreign substance processing unit flows into a main duct, and ultrafine dust in air flowing into the main duct is filtered; a plurality of branch ducts to divide filtered air from the filter module, and guide the air to the main duct; a flow passage control unit which is arranged on each branch duct, and selectively connects the main duct and the branch ducts; a discharge duct to discharge filtered air to the outside through the fine filter unit; and a recirculation duct communicating with the discharge duct. During pulsing work of the filter module, purified air via the discharge duct is supplied to the filter module through the recirculation duct by a selective operation of the flow passage control unit.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a dust suction sweeper which uses filtering air for pulsing operation.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road dust suction sweeper, and more particularly, to a road dust suction sweeper adapted to use air filtered from a fine filter portion for pulsing.

Each municipality or the road management organization periodically removes foreign materials and fine dust accumulated on the roads to maintain and manage the roads in a clean condition.

In particular, the treatment of waste is very important in relation to the beauty of the city, among which cleaning of roads and roads is important because of the nature of cities where high populations are concentrated.

Such road surface cleaning work is mainly used for road surface cleaning vehicles that can clean the road surface with less manpower. Road surface sweeps are used for cleaning waste that has been dumped on public roads, highways, parking lots, large industrial complexes, airfield runways,

1 is a schematic view showing a conventional road sweeper.

1, the road surface sweeping machine 10 includes a loading unit 1, a side suction unit 2, a side brush assembly 3, and a wind power generating unit 4.

Here, the wind power generation unit 4 may be a blower, and the wind power generation unit 4 is provided to provide a suction force to the side suction unit 2 for suctioning foreign matter on the road surface.

Here, the side brush assembly 3 is provided in front of the side suction part 2 to sweep the foreign matter on the road surface toward the side suction part 2, thereby effectively cleaning the road surface.

The side suction portion 2 sucks the foreign matter on the road surface, and then guides the suctioned foreign matter to the loading portion 1. Therefore, the foreign matter sucked from the side suction portion 2 can be accumulated in the loading portion 1.

The road surface sweeper 10 is provided with a filter unit 5 on the upper part of the loading unit 1. The filter unit 5 purifies the collected air into the interior of the loading unit 1 and supplies the purified air to a discharge duct (not shown). As described above, the air supplied to the discharge duct can be discharged to the outside by the blowing-force generating unit 4.

However, such a conventional road sweeper 10 has a problem that the dust collecting process can not be performed for fine dust particles having a size of less than 10 mu m.

For example, when the filter portion 5 is formed so as to filter dust of a small particle diameter, the filter portion 5 is highly likely to be clogged by dusts having a certain size or larger than that of the dust introduced into the loading portion 1. Due to the clogging of the filter unit 5, the filter unit 5 can not perform an effective filtering operation on the foreign matter. In this case, too, the wind power generating unit 4 is also overloaded, which affects the operation of the wind power generating unit 4.

As described above, the conventional road surface sweeping machine 10 is not provided with a separate structure for reducing the size of foreign matter in stages with respect to the foreign matter introduced into the loading unit 1. Therefore, No filtering can be done for fine dust.

The conventional road sweeper 10 does not have a separate structure for reusing the clean air that has passed through the filter unit 5. Therefore, it is necessary to study various methods for reusing the air having passed through the filter unit 5 and removing the foreign substance.

Prior Art 1: Korean Patent Laid-Open No. 10-2015-0109812 (Feb.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a road dust suction sweeper adapted to use air filtered from a fine filter unit for pulsing.

According to an aspect of the present invention, there is provided a vehicle comprising: a vehicle body; A suction unit mounted on the vehicle body and sucking foreign substances existing on the road surface; A wind power generating unit for providing a suction force to the suction unit; A foreign matter processing unit having a plurality of stacking units for treating the foreign substances sucked from the suction unit in a multi-stage manner; A filter unit for filtering the ultrafine dust with respect to the air introduced into the main duct and filtered from the filter module provided in the foreign matter processing unit; A plurality of branch ducts for partitioning the air filtered from the filter module and leading to the main duct; A flow control unit provided respectively in the branch duct and selectively communicating the main duct and the branch duct; An exhaust duct for exhausting the air filtered through the fine filter unit to the outside; And a recirculating duct communicating with the discharge duct, wherein during the pulsing operation of the filter module, purified air passing through the discharge duct is selectively supplied to the filter module through the recirculation duct by selective operation of the flow control portion, The present invention provides a road dust suction sweeper using filtering air for the pulsing operation.

In one embodiment of the present invention, the air cleaner further includes a plurality of compressed air injectors inserted into the hollow of the filter module, for spraying compressed air to desorb foreign substances adhered to the filter module, And to inject air from the purge air reservoir that stores filtered air via the outlet duct into the filter module.

According to an embodiment of the present invention, the purified air storage unit includes an air storage tank having an air storage space formed therein; A connection pipe having one end connected to the discharge duct and the other end connected to the air storage tank; A fan installed inside the connection pipe for introducing air passing through the discharge duct into the air storage tank; A plurality of supply lines connected to the air storage tank at one end and connected to the compressed air injecting unit to supply air stored in the air storage tank to the compressed air injecting unit; A pressure gauge for measuring an internal pressure of the air storage tank; A first opening and closing member for opening and closing the connection pipe; A second opening / closing member for opening / closing the supply pipe; And a purge control unit interlocked with the operation of the compressed air injection unit and selectively controlling the fan, the first opening and closing member, and the second opening and closing member.

In one embodiment of the present invention, the foreign matter treatment section is provided with a first stacking section for firstly subjecting the foreign substance sucked from the suction section to gravity, and the first stacking section has, on one surface thereof, And a bottom surface of which is inclined toward the first discharge port; and a second loading hole formed in the bottom of the first loading case. A first blocking portion which is formed in a vertical column shape of a " (" shape, spaced apart in the lateral direction so as to form a spacing space, which collides with foreign matter discharged from the first communication hole, And a second blocking portion provided at a rear portion of the first blocking portion to form a vertical column shape corresponding to the first blocking portion and to collide with a foreign substance guided to the separated space portion so that foreign matter falls down by gravity, A plurality of second communication holes for guiding foreign substances are formed on the other surface of the first loading case at a height corresponding to the first communication hole and the second blocking portion is formed by the second blocking portion, Wherein the first blocking portion and the second blocking portion are formed to prevent foreign matter discharged from the first communication hole from being directly guided to the second communication hole, Can.

According to an embodiment of the present invention, the foreign matter processing unit may include a second loading unit disposed adjacent to the first loading unit and having a cyclone unit, for performing second-type foreign matter processing on the foreign matter introduced from the first loading unit, Wherein the second loading unit includes a second loading case disposed adjacent to the first loading case and having a mounting space formed therein; And a plurality of cyclone portions provided in the installation space portion and connected to the second communication holes to perform a foreign substance treatment on the foreign substances discharged from the second communication holes through a cyclone system, And the slit is formed to communicate with an inner space of the inner wall part and a space between the inner wall part and the outer wall part.

In an embodiment of the present invention, the slit may have a spiral shape and may have a wider width from the inner wall to the outer wall.

According to an embodiment of the present invention, the foreign matter processing unit may include a third loading unit disposed adjacent to the second loading unit and subjecting the foreign matter introduced from the second loading unit to tertiary foreign matter processing through the first filter Wherein the third loading part has a third communication hole communicating with the cyclone part on one side thereof and a loading space in which foreign matter is loaded in the third loading part and the bottom surface is inclined toward the third discharging port, A third loading case; A plurality of filter modules coupled to an upper portion of the third stacking case and having a predetermined number of modules in a first filter for contaminating a foreign matter introduced from the second stacking portion; And a third blocking portion spaced apart from the third communication hole and configured to have a concavo-convex shape and to move a foreign substance discharged from the third communication hole downward, and the third blocking portion is provided between the filter module and the third communication hole And the height of the third blocking portion is higher than the height of the filter module so that foreign matter discharged from the third communication hole is prevented from being directly guided to the filter module.

The effect of the dust dust suction sweeper using the filtering air in the pulsing operation according to the present invention will be described as follows.

According to the present invention, the compressed air injector of the road dust suction sweeper performs the pulsing operation of the first filter by using the clean air that has passed through the fine filter section for removing ultrafine dust. Thus, the first filter is prevented from being contaminated by the air injected from the compressed air injecting portion.

And, during the pulsing operation of the first filter, the clean air guided from the recirculating duct is pulsed with additional supply to the first filter, so that the foreign matter adhered to the first filter can be effectively desorbed.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is an exemplary view showing a conventional road sweeper.
2 is a plan view of a road dust suction sweeper according to an embodiment of the present invention.
3 is a schematic perspective view showing the inside of a road dust suction sweeper according to an embodiment of the present invention.
Fig. 4 is an AA cross-sectional view of Fig. 2. Fig.
5 is a perspective view of the first loading part according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view taken along line BB in Fig. 2;
7 is a schematic perspective view of a cyclone portion according to an embodiment of the present invention.
8 is an exemplary view showing an air flow during suction of a road dust suction sweeper according to an embodiment of the present invention.
FIG. 9 is an exemplary view showing the air flow during the pulsing operation of the first filter of the road dust suction sweeper according to the embodiment of the present invention.
10 is a schematic configuration diagram of a purified air storage unit according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as " comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

In the present invention, the upper part and the lower part mean that they are located above or below the object member, and does not necessarily mean that they are located at the upper or lower part with respect to the gravity direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a plan view of a road dust suction sweeper according to an embodiment of the present invention, FIG. 3 is a schematic perspective view showing the inside of a road dust suction sweeper according to an embodiment of the present invention, 2 is an AA sectional view, FIG. 5 is a perspective view of a first mounting portion according to an embodiment of the present invention, FIG. 6 is an exemplary view taken along line BB in FIG. 2, and FIG. Fig. 3 is a schematic perspective view of the cyclone portion.

2 to 7, a road dust suction sweeper 1000 using filtering air for pulsing operation includes a vehicle body 100, a suction unit 200, a wind power generating unit 300, a first loading unit 400, a second loading unit 500, a third loading unit 600, a fine filter unit 700, and a discharge duct 830.

Hereinafter, the road dust suction sweeper 1000 using the filtering air for the pulsing operation will be described as a short term road dust suction sweeper 1000.

First, the vehicle body 100 is a skeleton of the road dust suction sweeper 1000, and various configurations may be mounted on the vehicle body 100.

The suction unit 200 is mounted on the vehicle body 100, and guides the foreign matter to the first loading unit 400 after sucking foreign substances existing on the road surface. Here, the suction force of the suction unit 200 is generated by the operation of the wind power generation unit 300. That is, the suction unit 200 sucks the foreign object on the road surface through the operation of the wind power generation unit 300. At this time, the foreign substance sucked from the suction unit 200 may be dust. As described above, the foreign matter discharged to the first loading unit 400 through the suction unit 200 is primarily subjected to foreign matter treatment by gravity.

The first loading unit 400 may include a first loading case 410, a first blocking unit 420, and a second blocking unit 430.

The first loading case 410 forms a loading space in which foreign matter is loaded. A first communication hole 411 is formed on one surface of the first loading case 410. The first communication hole 411 communicates with the suction part 200 and the end of the first communication hole 411. The foreign matter including the dust sucked by the suction part 200 flows through the first communication hole 411, 410). ≪ / RTI >

Here, the bottom surface of the first loading case 410 is formed so as to be inclined toward the first discharging port 413 through which the foreign matter loaded in the loading space of the first loading case 410 is discharged to the outside. Accordingly, when the first outlet 413 in the closed state is opened, the foreign matter stacked in the first loading case 410 can be smoothly discharged to the outside through the first outlet 413.

The first blocking portion 420 is provided in the first loading case 410 and is spaced apart from the first communication hole 411. The first blocking portion 420 collides with the foreign matter discharged from the first communication hole 411, and the foreign matter having a predetermined weight or more is dropped by gravity.

The first blocking part 420 is formed in a shape of a vertical column. The first blocking part 420 includes a plurality of first blocking parts 420 arranged continuously in the transverse direction, And spaced apart to form a spacing space 421 between them.

When the foreign matter discharged from the first communication hole 411 collides against the first blocking part 420 forming the curved surface, the speed is drastically reduced. In the state where the speed is reduced, the foreign matter having a predetermined size or more, It can be dropped down to the side of the base 413.

Here, the first blocking portion 420 can prevent the foreign matter discharged from the first communication hole 411 from being directly attached to the first blocking portion 420 as the curved shape of the " (" The foreign matter discharged from the first communication hole 411 is blocked by the first blocking portion 420 having a curved shape and the second blocking portion 430 provided at the rear portion through the separation space portion 421 in a state where the speed is reduced by the curved blocking portion 420 Or may fall to the first discharge port 413 side.

The first blocking portion 420 prevents the foreign matter accumulated in the first discharge port 413 from being scattered along the first blocking portion 420 as the curved surface of the first blocking portion 420 is formed.

For example, if the first blocking portion takes the form of a rectangular plate, most of the foreign matter discharged from the first communication hole 411 is moved downward along the first blocking portion, The foreign matter may be scattered, so that the foreign matter treatment may not be effectively performed. Accordingly, the first blocking portions 420 are provided in a plurality of curved surfaces.

On the other hand, the second blocking portion 430 is provided at a rear portion of the first blocking portion 420.

The second blocking portion 430 is formed in the shape of a vertical pillar having a shape corresponding to the shape of the first blocking portion 420. The second blocking portion 430 is disposed at a rear portion of the first blocking portion 420 and is disposed at a rear portion of the spacing space portion 421.

Accordingly, the foreign matter in a state in which the speed is reduced by the first blocking portion 420 is moved toward the first discharge port 413 by the second blocking portion 430 formed in a vertical column shape, And moves downward along the longitudinal direction of the portion 430. That is, the second blocking part 430, which is in the shape of ") ", blocks foreign matter discharged from the first communication hole 411 from being directly moved into the second communication hole 412, The foreign matter is guided to the lower side of the body.

For example, when the foreign substances present in the first loading case 410 have a weight greater than a predetermined value, the first foreign object falls into the first outlet 413 based on the suction force sucked into the second communication hole 412, If the foreign matter has a weight less than the predetermined value, the foreign matter is sucked into the second communication hole 412 after passing through the first blocking portion 420 and the second blocking portion 430.

As described above, the first blocking portion 420 and the second blocking portion 430 collide with the foreign matter discharged from the first communication hole 411 and the speed of the foreign matter is lowered, thereby separating the foreign matter by the gravity according to the weight of the foreign matter .

The first blocking part 420 and the second blocking part 430 are formed on the other side of the first loading case 410 so that the foreign matter discharged from the first communication hole 411 formed on one surface of the first loading case 410 So that it is prevented from directly guiding to the second communication hole 412 formed. Here, the second communication hole 412 may be formed at a height corresponding to the first communication hole 411. That is, the first blocking portion 420 and the second blocking portion 430 are provided between the first communication hole 411 and the second communication hole 412 so as to prevent foreign matter So that the foreign matter having a predetermined weight or more is primarily filtered at the first loading section 400.

A plurality of embossings (e) may be further formed on the first blocking portion 420 and the second blocking portion 430. Here, the embossing (e) formed on the first blocking part 420 and the second blocking part 430 may be protruded toward the first communication hole 411 side.

When embossed e is formed on the first blocking portion 420 and the second blocking portion 430 as described above, foreign matter strikes the first blocking portion 420 and the second blocking portion 430, The speed reduction of the foreign matter can be more effectively achieved. Since the embossing e is protruded to face the first communication hole 411, foreign matter can be prevented from being caught or adhered to the embossing e.

On the other hand, the second stacking unit 500 is disposed adjacent to the first stacking unit 400.

The second stacking unit 500 is secondarily subjected to foreign matter treatment on the foreign matter introduced from the first stacking unit 400.

The second loading unit 500 may include a second loading case 510 and a cyclone unit 520.

Here, the second loading case 510 forms an installation space 511 in which the plurality of cyclones 520 are installed. The second stacking case 510 is disposed adjacent to the first stacking case 410.

The cyclone unit 520 secondarily handles the foreign matter introduced from the first loading unit 400. The cyclone part 520 is provided in the installation space part 511 and each cyclone part 520 is connected to the second communication hole 412. Accordingly, the foreign matter discharged from the second communication hole 412 can be introduced into the cyclone part 520.

The cyclone portion 520 may include an outer wall portion 521 and an inner wall portion 522.

The outer wall portion 521 forms an outer shape of the cyclone portion 520, and a space is formed in the inner wall portion 522 to accommodate the inner wall portion 522 therein.

The inner wall portion 522 is disposed inside the outer wall portion 521 and is spaced apart from the inner surface of the outer wall portion 521. The cyclone part 520 has a double-walled structure of the outer wall part 521 and the inner wall part 522.

Here, a slit s is formed in the inner wall portion 522. This slit s may be formed in the inner wall portion 522. [

The slits s may be formed at predetermined intervals along the inner circumferential surface of the inner wall portion 522 in a vertical direction. The slits s may be formed only on the upper side of the inner wall portion 522 or only on the lower side of the inner wall portion 522. [ Alternatively, the slits s formed on the upper side and the lower side of the inner wall portion 522 may be formed so as to intersect with each other along the circumference of the inner wall portion 522. Thus, the inner wall 522 can be formed with slits s in various shapes.

Among the various slits (s) formed in the inner wall portion 522, the spiral slit s has a rotation (rotation) of the dust particles rotated along the inner wall portion 522 by the centrifugal force, Thereby preventing the speed from being reduced. Therefore, the dust treatment efficiency of the cyclone part 520 can be further increased.

When the vertical slit is formed in the inner wall portion 522, the dust particles swirling along the inner wall portion 522 are totally turbulent at the slit portion in the vertical shape and affect the swirling flow of the dust particles, The efficiency may be somewhat lower. On the contrary, when the spiral slit s is formed on the inner wall portion 522 described in the embodiment of the present invention, the dust particles rotating along the inner wall portion 522 do not reduce the rotation speed, can do. Therefore, the dust treatment efficiency of the cyclone part 520 can be further increased.

Here, the shape of the slit s formed in the inner wall portion 522 is not necessarily limited to a specific shape, but may be variously formed as described above.

Since the slit s is formed in the inner wall portion 522 of the cyclone portion 520, the large dust particles pass through the slit s of the inner wall portion 522 and the outer wall portion 521, And is moved to a space between the inner wall 522 and the outer wall 521 by an inertial force, and then falls and accumulates to the bottom.

The dust particles having a relatively small size are pivoted downward along the inner wall portion 522 by centrifugal force of the cyclone, and are accumulated on the lower portion of the outer wall portion 521.

Thus, the dust-treated air can be discharged to the third stacking unit 600 through the discharge pipe 523 provided at the upper part of the outer wall part 521.

It is preferable that the slits s formed in the inner wall portion 522 are formed so as to be wider from the inner wall portion 522 to the outer wall portion 521. This is to ensure that large dust particles introduced into the slit (s) are smoothly discharged into the space between the inner wall portion 522 and the outer wall portion 521. Also, it is intended to prevent clogging of the slit (s) due to foreign matter introduced into the slit (s).

Since the cyclone part 520 having the double-wall structure has a structure in which large dust particles can escape through the slit s into the space between the inner wall part 522 and the outer wall part 521, The pressure loss is reduced, and the problem of high pressure loss in existing cyclone devices can be solved.

In addition, since the cyclone portion 520 has the double-wall structure of the outer wall portion 521 and the inner wall portion 522, wear of the outer wall portion 521 can be effectively reduced. Since the cyclone portion 520 can greatly reduce the air resistance while improving the dust collection efficiency, an effective dust collection process can be performed.

On the other hand, the third loading unit 600 is disposed adjacent to the second loading unit 500.

The third loading unit 600 treats the foreign matter introduced from the second loading unit 500 through the first filter 621 in a tertiary manner.

The third loading unit 600 may include a third loading case 610, a filter module 620, and a third blocking unit 630.

The third loading case 610 forms a loading space in which foreign matter is loaded. The third loading case 610 is disposed adjacent to the second loading case 510.

Here, a third communication hole 611 is formed on one side of the third loading case 610. The third communication hole 611 is communicated with the discharge pipe 523 of the cyclone part 520. Therefore, the air that has been subjected to the secondarily foreign matter treatment in the cyclone part 520 can be discharged to the inside of the third loading case 610 through the third communication hole 611 via the discharge pipe 523.

The bottom surface of the third loading case 610 is inclined toward the third outlet 612 like the first loading case 410. Accordingly, when the third outlet 612 in the closed state is opened, the foreign matter stacked in the third loading case 610 can be smoothly discharged to the outside through the third outlet 612. [

The third blocking portion 630 is provided in the third loading case 610 and is spaced apart from the third communication hole 611. The third blocking portion 630 is provided between the filter module 620 and the third communication hole 611 to prevent the foreign matter discharged from the third communication hole 611 from being directly guided to the filter module 620 . At this time, the height of the third blocking portion 630 is formed to be higher than the height of the filter module 620 to prevent the foreign matter discharged from the third communication hole 611 from being directly guided to the filter module 620.

Here, the third blocking portion 630 may reduce the speed of the foreign matter discharged from the third communication hole 611, such as the first blocking portion 420 and the second blocking portion 430, Is not. Specifically, after the first foreign material is processed in the first loading unit 400 and the second foreign material is processed in the second loading unit 500, the foreign matter introduced into the third loading case 610 is transferred to the first loading The foreign matter is treated through the first filter 621 provided in the filter module 620 rather than by the gravitational foreign matter treatment method as in the case 400. The third blocking portion 630 is disposed in the third communication hole 611 may be prevented from being directly guided to the filter module 620.

At this time, the third blocking portion 630 is not formed in a flat plate shape, and the foreign matter discharged from the third communication hole 611 as the uneven shape is formed, As shown in FIG. Therefore, the foreign matter stacked on the lower part of the third stacking case 610 can be prevented from being scattered by the foreign matter guided from the third blocking part 630.

And the filter module 620 is provided at an upper portion of the rear side of the third stacking case 610.

In this filter module 620, a plurality of first filters 621 are formed in a module form. A plurality of such filter modules 620 are provided in the third loading case 610.

The filter module 620 performs a foreign matter treatment on the foreign matter introduced from the second loading part 500. That is, the foreign matter introduced from the second loading unit 500 is subjected to a finer dust removing operation.

The filter module 620 performs a filtering operation on the foreign matter introduced into the third loading case 610 through the first filter 621. The air filtered from the first filter 621 passes through the branch duct (810). The air guided to the branch duct 810 through the first filter 621 is subjected to foreign matter treatment three times in the first stacking unit 400, the second stacking unit 500 and the third stacking unit 600 Air is the work done.

As described above, the road dust suction sweeper 1000 of the present invention is not designed to directly filter the foreign matter introduced from the suction portion of the conventional road dust suction sweeper by the first filter.

In other words, the road dust suction sweeper 1000 according to the present invention is configured such that the foreign matter introduced from the suction unit 200 moves the first stacking unit 400, the second stacking unit 500, and the third stacking unit 600 stepwise So that the foreign matter is processed. That is, in the first loading unit 400, foreign matter introduced from the suction unit 200 is subjected to a primary foreign substance treatment, and in the second loading unit 500, foreign matter introduced from the first loading unit 400 The secondary processing of the foreign matter is proceeded. The foreign matter introduced into the third loading unit 600 including the first filter 621 may be dust contained in the first loading unit 400 and the second loading unit 500 Air. Accordingly, the first filter 621 can effectively perform filtering operation on the dust that has flowed into the third loading unit 600.

In other words, the first filter 621 is subjected to a filtering operation with respect to the air subjected to the first and second foreign matters in the loading portion of the previous stage, and the filtering operation is performed on the first filter 621 The occurrence of an overload can be prevented.

The road dust suction sweeper 1000 includes a foreign matter processing unit including a first loading unit 400, a second loading unit 500 and a third loading unit 600 for processing foreign substances in a multi-stage manner, 200 are gradually moved from the first loading unit 400 to the third loading unit 600 so that the size of the foreign substances to be filtered gradually decreases. As a result, as the foreign substances are gradually processed, The ultrafine dust having a particle diameter of 2.5 mu m or less can be filtered.

As described above, since the fine filter unit 700 filters the ultrafine dust with respect to the air subjected to the three-stage foreign matter treatment, no overload occurs in the process of filtering the ultrafine dust. Therefore, the fine filter portion 700 can smoothly remove the ultrafine dust without clogging.

In contrast, when the fine filter portion of the present invention is applied to a conventional road dust suction sweeper, since the conventional road dust suction sweeper does not have a multi-stage foreign matter treatment process, the fine filter portion is clogged in a short time due to a large dust larger than a certain level, There is a difficulty in processing.

Meanwhile, the branch duct 810 is configured to guide the filtered air from the filter module 620 to the main duct 820. This branch duct 810 is configured to partition the filtered air from each filter module 620. For example, the air A filtered by the A filter module 620 among the plurality of filter modules 620 is divided into a plurality of branched ducts 810 through the A ducted duct 810, Lt; RTI ID = 0.0 > 820 < / RTI > The B air filtered by the B filter module 620 among the plurality of filter modules 620 is supplied to the main duct 820 through the B branch duct 810 through which the B air among the divided branch ducts 810 is moved. Lt; / RTI >

Thus, the branch duct 810 divides the filtered air from each filter module 620 and directs the filtered air to the main duct 820. That is, the main duct 820 is connected to each branched branch duct 810, and air supplied from each branch duct 810 is collected in the main duct 820.

Here, a plurality of branch ducts 810 are provided with a flow control unit c. The flow control unit (c) is configured to selectively control the communication between the main duct (820) and the branch duct (810). For example, when the main duct 820 and the branch duct 810 are shut off only by the A-flow control unit c among the plurality of flow control units c, the suction force generated by the blowing-power generating unit 300 is A And is not provided to the filter module 620. That is, the suction force generated in the wind power generation unit 300 is supplied to the remaining filter modules 620 except for the A filter module 620 in a cut-off state.

Thus, the flow control unit (c) can selectively block the suction force provided to the filter module (620) by selectively controlling the communication between the main duct (820) and the branch duct (810).

Meanwhile, the fine filter unit 700 performs a filtering operation on the air guided from the branch duct 810 to the main duct 820. That is, the fine filter unit 700 processes the foreign matter in a quaternary manner with respect to the air introduced into the main duct 820 through the second filter 710.

At this time, the second filter 710 provided in the fine filter unit 700 is provided with a particulate matter (PM 2.5) having a particle diameter of 2.5 탆 or less contained in the air filtered through the first filter 621 So that filtering can be performed.

Accordingly, the road dust suction sweeper 1000 filters the foreign substances sucked through the suction unit 200 through the fourth-stage foreign matter treatment process to ultrafine dust in the fine filter unit 700. The clean air filtered by the fine filter unit 700 can be discharged to the outside through the discharge duct 830.

Meanwhile, the road dust suction sweeper 1000 may further include a recirculation duct 840.

The recirculation duct 840 communicates with the exhaust duct 830 and guides the air passing through the fine filter unit 700 to the first filter 621. Thus, during the pulsing operation of the first filter 621, clean air passing through the fine filter unit 700 can be used for pulsing the first filter 621.

The flow control unit c controls the communication between the main duct 820 and the branch duct 810 selectively during the pulsing operation of the filter module 620 so that the air discharged through the fine filter unit 700 is supplied to the filter module 620). ≪ / RTI > That is, the flow control unit (c) selectively supplies air to the outside through the exhaust duct (830) after passing through the fine filter unit (700) through the selective control to the filter module (620) The clean air guided from the recirculation duct 840 is further supplied to the filter module 620 so that the foreign matter adhered to the first filter 621 can be effectively desorbed.

As described above, the road dust suction sweeper 1000 is effective not only to purify ultrafine dust but also to purify the purified air to the pulsing operation of the filter module 620.

8 is an exemplary view showing an air flow during suction of a road dust suction sweeper according to an embodiment of the present invention.

8 shows a moving path of air containing a foreign substance sucked through the suction unit 200 in a state where the flow path control unit c opens the main duct 820 and the branch duct 810. First, A blowing-force generating unit 300 for generating a blowing force for blowing foreign substances in the blowing-out air is operated. For example, the blowing force generator 300 may be a blower.

Next, the suction force generated by the operation of the wind-power generating unit 300 is transmitted to the suction unit 200, and the suction unit 200 sucks foreign matter on the road surface.

Next, foreign matter sucked through the suction unit 200 is discharged to the inside of the first loading unit 400. The foreign matter discharged to the inside of the first loading part 400 strikes the first blocking part 420 and the second blocking part 430 provided in the first loading part 400, So that the first foreign matter processing is performed.

Next, the foreign matter passing through the first loading unit 400 is moved to the second loading unit 500. [ The foreign matter moved to the second loading unit 500 is subjected to the second foreign matter treatment by the cyclone unit 520.

Next, the foreign matter passed through the second loading unit 500 is moved to the third loading unit 600. The third foreign material is moved to the third loading unit 600 by the filter module 620 provided with the first filter 621. The air thus filtered through the filter module 620 is guided to the main duct 820.

Next, the fine filter unit 700 performs the filtering operation on the air introduced into the main duct 820. At this time, the fine filter portion 700 is filtered to the ultrafine dust (PM 2.5) having a particle diameter of 2.5 μm or less.

The air filtered by the fine filter unit 700 is discharged to the outside through the exhaust duct 830.

FIG. 9 is an exemplary view showing the air flow during the pulsing operation of the first filter of the road dust suction sweeper according to the embodiment of the present invention.

9 shows a state in which any one of the plurality of flow control portions c is discharged to the discharge duct 830 while the main duct 820 and the branch duct 810 are closed, To be reused in the pulsing operation of the first filter 621. [

Referring to FIG. 9, in the air flow during pulsing operation of the filter module 620, the road dust suction sweeper 1000 is provided with a flow control unit c. The flow control unit (c) selectively blocks the communication between the branch duct (810) and the main duct (820). As a result, a vacuum is generated in the filter module 620 blocked by the branch duct 810 and the main duct 820 by the flow control unit (c), and the filter module 620, The air discharged from the filter 830 is supplied to the filter module 620 through the recirculation duct 840.

Therefore, during the pulsing operation of the filter module 620, the flow control unit c cuts off the branch duct 810 and the main duct 820 through which the pulsing operation is to be performed, so that clean air flows through the recirculation duct 840 to the filter module 620 The compressed air injecting portion i having a jetting portion inserted into the hollow inside of the first filter 621 while being supplied with the compressed air injects compressed air into the first filter 621, 621 of the first embodiment.

Since the clean air discharged from the discharge duct 830 is reused in the pulsing operation of the filter module 620, the road dust suction sweeper 1000 can minimize the amount of air compression compared to the conventional pulsing operation Of course, the life and efficiency of the filter can be maximized.

FIG. 10 is a schematic configuration of a purge air storage unit according to an embodiment of the present invention. Structures designated by the same reference numerals as those shown in FIGS. 2 to 9 have the same functions. A detailed description thereof will be omitted.

10, the purified air storage unit 900 includes a connection pipe 910, a fan 920, a first opening and closing member 930, an air storage tank 940, a supply pipe 950, a pressure gauge 960, a second opening and closing member 970, and a purge control unit 980.

The purge air storage unit 900 is provided in the road dust suction sweeper 1000 and supplies the filtered air to the compressed air spray unit i via the fine filter unit 700.

Here, the connection pipe 910 is connected to the exhaust duct 830. At this time, the connection pipe 910 is coupled to the position of the exhaust duct 830 through which the filtered air passing through the fine filter unit 700 can be introduced.

The connection pipe 910 introduces air from the discharge duct 830 to the air storage tank 940. That is, one end of the connection pipe 910 is connected to the discharge duct 830, and the other end is connected to the air storage tank 940.

Here, a fan 920 is provided inside the connection pipe 910. This fan 920 is controlled by the operation of the purge control unit 980 and a part of the air passing through the discharge duct 830 can be introduced into the connection pipe 910 in operation of the fan 920.

The air storage tank 940 stores the air introduced from the discharge duct 830. That is, the air storage tank 940 stores the clean air from which the ultrafine dusts have been removed via the fine filter unit 700.

The air storage tank 940 is provided with a pressure gauge 960. The pressure gauge 960 measures the internal pressure of the air storage tank 940 and supplies the measured internal pressure information to the purification control unit 980 .

The purge control unit 980 selects the operation of the fan 920, the first opening and closing member 930 and the second opening and closing member 970 from the internal pressure information of the air storage tank 940 provided from the pressure gauge 960 And adjusts the internal pressure of the air storage tank 940 to a predetermined pressure range.

For example, when the internal pressure value of the air storage tank 940 is lower than a predetermined pressure value, the purge control unit 980 opens the first opening and closing member 930 and closes the second opening and closing member 970 The fan 920 may be operated to supply the air passing through the discharge duct 830 to the air storage tank 940. [ In this way, the purge control unit 980 can selectively control the operation of the first opening and closing member 930, the second opening and closing member 970, and the fan 920.

One end of the supply pipe 950 is connected to the air storage tank 940 and the other end is connected to the compressed air injection part i so that air contained in the air storage tank 940 is supplied to the compressed air injection part i, .

A plurality of such supply pipes 950 are provided. That is, the supply pipe 950 is connected to each of the plurality of compressed air injection portions i, and supplies the air stored in the air storage tank 940 to each compressed air injection portion i.

Here, the purge control unit 980 selectively controls the opening and closing of the supply pipe 950 connected to the compressed air injecting unit i, which is interlocked with the plurality of compressed air injecting units i. For example, when the compressed air injection portion i is not operated, the supply pipe 950 is in a state of being cut off by the second opening and closing member 970. The second opening and closing member 970 is controlled to open and close the supply pipe 950 by the purge control unit 980. That is, the purge control unit 980 opens the corresponding supply pipe 950 in the shutoff state when the compressed air spraying unit i is operated, and supplies the air stored in the air storage tank 940 to the compressed air spraying unit i .

Thus, the purified air storage unit 900 supplies the clean air from which the ultrafine dust is removed to the compressed air injection unit i during the pulsing operation of the first filter 621, so that the first filter 621 is compressed It is possible to prevent contamination due to the air injected from the air injection portion (i).

For example, in the conventional case, the compressed air injector sucks air existing outside the vehicle and then desorbs foreign matter adhered to the first filter 621. However, fine dust may be contained in the outside air. If fine dust is contained in the air, the first filter 621 may be contaminated during the pulsing operation.

Accordingly, the compressed air spraying part (i) of the present invention can remove foreign matter adhering to the first filter 621 by using clean air filtered to ultrafine dust, It is possible to prevent the occurrence of contamination.

It should be understood, however, that the scope of the present invention is not limited by the scope of the present invention.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100:
200:
300:
400: first loading section
410: first loading case
411: first communication hole
412: Second communication hole
413: First outlet
420:
421:
430:
500: second loading section
510: Second loading case
511: Installation space part
520: Cyclone part
521: outer wall portion
522: inner wall portion
523: discharge pipe
600: Third loading section
610: Third loading case
611: Third communication hole
612: Third outlet
620: Filter module
621: first filter
630:
700: fine filter portion
710: Second filter
810: Branch duct
820: Main duct
830: exhaust duct
840: Recirculation duct
900: purge air storage part
910: Connection piping
920: Fan
930: first opening / closing member
940: Air storage tank
950: Supply piping
960: Pressure gauge
970: second opening / closing member
980:
c:
i:
1000: road dust suction sweeper

Claims (7)

A vehicle body;
A suction unit mounted on the vehicle body and sucking foreign substances existing on the road surface;
A wind power generating unit for providing a suction force to the suction unit;
A foreign matter processing unit having a plurality of stacking units for treating the foreign substances sucked from the suction unit in a multi-stage manner;
A filter unit for filtering the ultrafine dust with respect to the air introduced into the main duct and filtered from the filter module provided in the foreign matter processing unit;
A plurality of branch ducts for partitioning the air filtered from the filter module and leading to the main duct;
A flow control unit provided respectively in the branch duct and selectively communicating the main duct and the branch duct;
An exhaust duct for exhausting the air filtered through the fine filter unit to the outside; And
And a recirculation duct communicating with the discharge duct,
Wherein during the pulsing operation of the filter module, purified air passing through the discharge duct is selectively supplied to the filter module through the recirculation duct by selective operation of the flow control part,
The foreign matter processing unit includes a first stacking unit for primarily performing foreign matter treatment of foreign objects sucked from the suction unit by gravity, and a second stacking unit disposed adjacent to the first stacking unit and provided with a cyclone unit, A second stacking portion for secondarily treating the foreign matter with respect to the foreign matter,
The first loading part has a first communication hole communicating with the end of the suction part on one side and a loading space in which foreign matter is loaded on the first loading part. The bottom surface of the first loading part is inclined toward the first discharging port, ;
A first blocking portion which is in the form of a vertical column of a "(" shape, spaced apart in the lateral direction so as to form a spacing space portion, collides with foreign matter discharged from the first communication hole and drops foreign matter by gravity;
A second blocking portion that is provided at a rear portion of the first blocking portion and has a vertical shape corresponding to the first blocking portion and which collides with a foreign substance guided to the separated space portion and allows the foreign substance to be dropped by gravity; Go,
Wherein a plurality of second communication holes are formed on the other surface of the first loading case so as to correspond to the first communication holes and guide foreign substances to the second loading portion, And the foreign matter discharged from the first communication hole is prevented from being directly guided to the second communication hole, wherein the filtering air is used for the pulsing operation.
The method according to claim 1,
Further comprising: a plurality of compressed air injectors inserted into the hollow of the filter module, for spraying compressed air to desorb foreign matter adhered to the filter module,
Wherein the compressed air injection unit is configured to inject air supplied from a purified air storage unit that stores filtered air passing through the discharge duct to the filter module.
3. The method of claim 2,
The purge air storage unit includes:
An air storage tank in which an air storage space is formed;
A connection pipe having one end connected to the discharge duct and the other end connected to the air storage tank;
A fan installed inside the connection pipe for introducing air passing through the discharge duct into the air storage tank;
A plurality of supply lines connected to the air storage tank at one end and connected to the compressed air injecting unit to supply air stored in the air storage tank to the compressed air injecting unit;
A pressure gauge for measuring an internal pressure of the air storage tank;
A first opening and closing member for opening and closing the connection pipe;
A second opening / closing member for opening / closing the supply pipe; And
And a purge control unit interlocked with the operation of the compressed air injection unit and selectively controlling the fan, the first opening and closing member, and the second opening and closing member.
The method according to claim 1,
Wherein the first blocking portion and the second blocking portion are formed with embossments.
The method according to claim 1,
The second loading section
A second loading case disposed adjacent to the first loading case and having an installation space; And
And a plurality of cyclone portions provided in the installation space portion and connected to the second communication holes and performing foreign matter treatment on the foreign substances discharged from the second communication holes through a cyclone method,
The cyclone part has an outer wall part forming an outer shape and an inner wall part accommodated in the outer wall part and having slits formed therein. The slit communicates the inner space of the inner wall part and the space between the inner wall part and the outer wall part Road dust suction sweeper using filtering air for pulsing operation.
6. The method of claim 5,
Wherein the slit has a spiral shape and is formed to have a wider width from the inner wall portion to the outer wall portion side.
6. The method of claim 5,
The foreign matter processing unit may further include a third stacking unit disposed adjacent to the second stacking unit and performing a third foreign substance treatment on the foreign substances introduced from the second stacking unit through the first filter,
The third loading unit
A third stacking case having a third communication hole communicating with the cyclone part on one side thereof and a loading space on which a foreign substance is stacked, the bottom side of which is inclined toward the third discharge port;
A plurality of filter modules coupled to an upper portion of the third stacking case and having a predetermined number of modules in a first filter for contaminating a foreign matter introduced from the second stacking portion; And
And a third blocking portion spaced apart from the third communication hole, the third blocking portion having a concavo-convex shape and moving the foreign matter discharged from the third communication hole downward,
The third blocking portion is disposed between the filter module and the third communication hole such that foreign matter discharged from the third communication hole is prevented from being directly guided to the filter module. Wherein the filtering air is used for pulsing operation.

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