KR102367541B1 - Road sweeping vehicle with a wet filter with improved fine dust collection performance - Google Patents

Abstract

The present invention relates to a cleaning vehicle for cleaning a road surface by suctioning foreign substances such as garbage, dust and the like from the road surface. The cleaning vehicle includes: a suction part installed in a lower part of the vehicle to suction foreign substances from a road surface; an air blower mounted in the vehicle, and providing a suctioning force to the suction part; and a loading box mounted in the vehicle, and storing the foreign substances suctioned by the suction part. The loading box includes: a casing having an opening part formed on a rear side; a door installed on the rear side of the casing to open and close the opening part; a housing space part formed in a front part of the inside of the casing to be opened downward, and housing the air blower; a loading space part having a front side divided from the housing space part by a partition and having a rear side formed in a rear part of the inside of the casing to be connected to the opening part, and storing the foreign substances suctioned by the suction part; an exhaust duct formed in an upper part of the insdie of the casing to connect the loading space part to an inlet of the air blower; a dirt screen installed in an upper part of the loading space part to be vertically rotatable so as to open and close the exhaust duct, and filtering foreign substances out of the air introduced from the loading space part into the exhaust duct in an upward rotated state so as to close the exhaust duct; and a wet filter unit installed on an upper side of the dirt screen, and filtering dust out of the air having passed through the dirt screen.

Description

Road sweeping vehicle with a wet filter with improved fine dust collection performance

The present invention relates to a road surface cleaning vehicle, and more particularly, to a cleaning vehicle for suctioning and cleaning foreign substances such as garbage or dust that have fallen on the road surface.

As a prior art related to a road cleaning vehicle, Korean Patent Publication No. 10-2065695 (registered on January 7, 2020) "road cleaning vehicle" is proposed.

The prior art relates to "a suction unit installed under the vehicle and sucking foreign substances from the road; a blower mounted on the vehicle and providing suction to the suction unit; and mounted on the vehicle, by the suction unit A loading box in which the inhaled foreign material is accommodated; includes, wherein the loading box includes a casing having an opening formed on a rear surface; a door installed on the rear surface of the casing to open and close the opening; , a receiving space in which the blower is accommodated; a front is partitioned from the receiving space by a bulkhead, and is formed in the inner rear of the casing so that the rear communicates with the opening, a loading in which foreign substances sucked by the suction unit are accommodated Space part; Exhaust duct formed to connect the loading space part and the intake port of the blower on the inner upper part of the casing; Installed to open and close the exhaust duct by being vertically rotatably installed on the upper part of the loading space part, and rotated upward A dirt screen for filtering foreign substances from the air flowing into the exhaust duct from the loading space in a state in which the exhaust duct is closed, and a screen opening/closing cylinder, and a connection member connecting the screen opening/closing cylinder and the dirt screen and a screen driving unit for opening and closing the dirt screen by the operation of the screen opening/closing cylinder, wherein the screen opening/closing cylinder is installed in the receiving space so as to be separated from the exhaust duct and the loading space, It is characterized in that the partition wall or the exhaust duct has a through hole through which the connecting member passes, and the screen opening/closing cylinder is disposed to be separated from the exhaust duct and the loading space, thereby avoiding fine dust passing through the dirt screen. , this is a technology that prevents malfunction of the screen opening/closing cylinder and improves the lifespan.

[Document 1] Republic of Korea Patent Publication No. 10-2065695 (registered on July 7, 2020)

An object of the present invention is to provide a road cleaning vehicle capable of improving fine dust collection performance by allowing dust to be filtered from air that has passed through a dirt screen.

The problems to be solved by the present invention are not limited to the aforementioned problems. Other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

In order to solve the above problems, a road surface cleaning vehicle according to an embodiment of the present invention includes: a suction unit installed under the vehicle and configured to suck foreign substances from the road; a blower mounted on the vehicle and configured to provide suction to the suction unit; and a loading box mounted on the vehicle and accommodating foreign substances sucked in by the suction unit; a door installed on the rear surface of the casing to open and close the opening; an accommodating space portion formed to be downwardly open on the entire inner side of the casing and accommodating the blower; a loading space in which a front is partitioned from the receiving space by a bulkhead and is formed in the inner rear portion of the casing so that the rear communicates with the opening, in which foreign substances sucked by the suction unit are accommodated; an exhaust duct formed on the inner upper portion of the casing to connect the loading space portion and the intake port of the blower; It is installed to open and close the exhaust duct by being vertically rotatably installed on the upper part of the loading space, and to filter foreign substances from the air flowing into the exhaust duct from the loading space in a state rotated upward to close the exhaust duct dirt screen; and a wet filter unit installed on the upper side of the dirt screen and configured to filter dust from the air that has passed through the dirt screen.

In an embodiment of the present invention, the wet filter unit is installed to be spaced apart back and forth from each other with a separation space therebetween, and a front filter body and a rear filter configured to block the space between the dirt screen and the ceiling of the casing, respectively. sifter; and connecting both ends and lower ends of the front filter body and the rear filter body, and the front end is rotatably coupled to the lower end of the front filter body to close both sides and lower sides of the separation space when rotating upward and a lower filter body that opens both sides and lower sides of the separation space portion when rotating downward.

In an embodiment of the present invention, the wet filter unit further includes a spray nozzle installed on the rear filter body to spray water into the separation space.

In an embodiment of the present invention, it further includes a recycling spray device that separates moisture from the air discharged from the blower and sprays the inside of the suction unit.

In an embodiment of the present invention, the loading box is provided with a driving means for vertically rotating the dirt screen and the lower filter body, the driving means, the driving cylinder installed in the receiving space; a connecting member having one end connected to the driving cylinder and the other end connected to the dirt screen and the lower filter body; a through hole formed in the exhaust duct through which the connecting member passes; a support bracket installed inside the exhaust duct to be disposed behind the through hole and having an auxiliary through hole through which the connecting member passes; a front pulley installed on an upper side of the dirt screen so as to be disposed in front of the wet filter unit; and a rear pulley installed on the upper side of the lower filter body, wherein the connecting member includes: a connecting rod installed to pass through the through hole and the auxiliary through hole, one end connected to the rod of the driving cylinder; a first wire having one end connected to the other end of the connecting rod and the other end connected to the dirt screen through the front pulley; and a second wire installed to pass through the front filter body, one end connected to the other end of the connecting rod, and the other end connected to the lower filter body through the rear pulley.

According to the present invention, since the dust passing through the dirt screen is filtered by the wet filter unit, there is an effect that a road cleaning vehicle with improved fine dust collecting performance can be provided.

1 is a side view of a road surface cleaning vehicle according to an embodiment of the present invention;
Figure 2 is a side view showing a state in which the loading box is raised in Figure 1;
3 is a perspective view of a loading box in a road surface cleaning vehicle according to an embodiment of the present invention;
Figure 4 is a side cross-sectional view of the loading box in the road surface cleaning vehicle according to the embodiment of the present invention.
FIG. 5 is a side cross-sectional view showing the dirt screen, the lower filter body, and the door open in FIG. 4;
6 is a perspective view of a dirt screen and a wet filter unit in a road surface cleaning vehicle according to an embodiment of the present invention;
7 is a perspective view illustrating a state in which the dirt screen and the lower filter body are rotated downward in FIG. 6;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, components shown in the drawings may be exaggerated, omitted, or schematically represented.

1 is a side view of a road cleaning vehicle according to an embodiment of the present invention, and FIG. 2 is a side view illustrating a state in which the loading box is raised in FIG. 1 .

As shown in FIGS. 1 and 2 , the road cleaning vehicle according to the embodiment of the present invention largely includes a suction unit 200 , a blower 300 , and a loading box 400 .

The suction unit 200 is installed at the lower part of the vehicle 100 , and receives suction power by the blower 300 to suck foreign substances from the road surface.

The suction unit 200 is connected to the loading space 450 of the loading box 400 to be described later by a flexible duct. Accordingly, the suction unit 200 transfers the foreign substances sucked from the road surface to the loading space unit 450 .

Meanwhile, a brush 500 and a water spray nozzle 600 disposed adjacent to the suction unit 200 may be installed under the vehicle 100 .

The brush 500 is installed to be rotated by a motor to sweep foreign substances on the road toward the suction unit 200 .

In addition, the water spray nozzle 600 sprays water on the road surface so that small foreign substances such as dust do not scatter.

The blower 300 is mounted on a chassis of the vehicle 100 to provide suction force to the suction unit 200 .

The intake side of the blower 300 is connected to an exhaust duct 460 to be described later. And the exhaust port side of the blower 300 is connected to the exhaust space 900 formed between the chassis and the loading box 400 of the vehicle 100, the air is discharged to the rear of the vehicle 100 through the exhaust space 900. installed so that

An auxiliary engine (not shown) for driving the blower 300 may be provided next to the blower 300 . That is, the auxiliary engine is mounted on the chassis of the vehicle 100 so as to be adjacent to the blower 300 to drive the blower 300 .

The loading box 400 is mounted on the chassis of the vehicle 100 , and provides a space in which foreign substances sucked from the road surface by the suction unit 200 are loaded.

The loading box 400 is rotatably coupled to the lower rear end of the chassis of the vehicle 100 . The loading box 400 is rotated around the coupling portion with the vehicle 100 chassis by the operation of the loading box lifting cylinder 700 installed to connect the vehicle 100 and the loading box 400 as shown in FIG. will do

Hereinafter, the configuration of the loading box 400 will be described in more detail with reference mainly to FIGS. 3 to 7 .

3 is a perspective view of the loading box in the road cleaning vehicle according to an embodiment of the present invention, FIG. 4 is a side cross-sectional view of the loading box in the road cleaning vehicle according to the embodiment of the present invention, and FIG. 5 is the dirt screen and lower filter in FIG. 6 is a perspective view of a dirt screen and a wet filter unit in a road cleaning vehicle according to an embodiment of the present invention, and FIG. 7 is a dirt screen and a lower filter body in FIG. It is a perspective view showing a downwardly rotated state.

3 to 7, the loading box 400, the casing 410; a door 420 installed on the rear surface of the casing 410; an accommodating space portion 430 formed on the inner front portion of the casing 410; a loading space 450 formed on the inner rear portion of the casing 410; an exhaust duct 460 formed on the inner upper portion of the casing 410; a dirt screen 470 installed rotatably up and down on the upper portion of the loading space 450; and a wet filter unit 480 installed on the upper side of the dirt screen 470 .

The casing 410 forms the outer shape of the loading box 400 . An opening 411 is formed on the rear surface of the casing 410 to communicate with the loading space 450 .

The door 420 is rotatably installed on the rear surface of the casing 410 , thereby opening and closing the opening 411 . The door 420 is rotated by the door opening/closing cylinder 4I0 mounted on the inner rear side of the casing 410 . At this time, the door opening/closing cylinder 4I0 is installed to be isolated from the loading space 450 by being embedded in the cylinder cover 4J0 formed inside the casing 410 to surround it.

The accommodating space 430 is formed to be downwardly open on the entire inner side of the casing 410 . The blower 300 and the auxiliary engine are accommodated in this accommodation space 430 .

The loading space 450 is formed such that the front is partitioned from the receiving space 430 by the bulkhead 440 , and the rear communicates with the opening 411 . The loading space part 450 is connected to the suction part 200 , and accordingly, foreign substances sucked from the road surface by the suction part 200 are accommodated in the loading space part 450 .

A water storage space (4F0) is formed on the lower side of the loading space (450). Water supplied to the water spray nozzle 600 and the spray nozzle 485 to be described later is stored in the water storage space 4F0. The loading space part 450 and the water storage space part 4F0 are partitioned by the bottom plate 4G0 provided to form the bottom of the loading space part 450 . The bottom plate 4G0 is formed to be inclined downward toward the door 420 so that foreign substances collected in the loading space 450 can be easily discharged through the opening 411 .

The exhaust duct 460 is formed to connect the loading space 450 and the intake port of the blower 300 .

The dirt screen 470 is installed rotatably up and down around the hinge by the front end being hinged to the exhaust duct 460, closes the exhaust duct 460 in an upwardly rotated state, and closes the exhaust duct 460 in a downwardly rotated state. 460) will be opened. The surface of the dirt screen 470 is generally in a mesh shape, and accordingly, in a state in which the exhaust duct 460 is closed, the air introduced into the exhaust duct 460 from the loading space 450 has a large volume. foreign matter will be removed.

The wet filter unit 480 is installed on the upper side of the dirt screen 470 to filter dust from the air that has passed through the dirt screen 470, and as shown in FIGS. 6 and 7, the front filter body 482 ), a rear filter body 483 , a lower filter body 484 and a spray nozzle 485 are included.

The front filter body 482 and the rear filter body 483 are installed to be spaced apart from each other back and forth with the separation space portion 481 interposed therebetween. The front filter body 482 and the rear filter body 483 are formed to block the space between the dirt screen 470 and the ceiling of the casing 410 .

The front filter body 482 is installed on the upper side of the dirt screen 470 by being coupled to the fixing member 4H0 installed to cross the ceiling of the casing 410 .

The rear filter body 483 is installed above the dirt screen 470 by being coupled to the front surface of the cylinder cover 4J0. Of course, the rear filter body 483 may be installed using a fixing base 4H0 like the front filter body 482 .

The lower filter body 484 is formed to connect both ends and lower ends of the front filter body 482 and the rear filter body 483 . The lower filter body 484 has its front end rotatably coupled to the lower end of the front filter body 482 up and down. Accordingly, the lower filter body 484 closes both sides and lower sides of the separation space 481 in the upwardly rotated state, and opens both sides and lower sides of the separation space 481 in the downwardly rotated state. will do

The front filter body 482 , the rear filter body 483 , and the lower filter body 484 have a net shape with a structure denser than the dirt screen as a whole except for the edges.

The spray nozzle 485 is installed in the rear filter body 483 to spray water into the separation space 481 . The spray nozzle 485 is connected to the water storage space 4F0 by a separate pipe and a pump. That is, the spray nozzle 485 is supplied with the water stored in the water storage space (4F0) is sprayed into the spaced space (481). Two or more spray nozzles 485 may be installed to evenly spray the spaced space portion 481 .

After all, according to the wet filter unit 480 having the above structure, the air passing through the dirt screen 470 is introduced into the separation space 481 through the rear filter body 483 or the lower filter body 484 . Then, it passes through the front filter body 482 and is discharged to the exhaust duct 460 . At this time, relatively bulky foreign substances in the air are filtered again by the rear filter body 483 and the lower filter body 484 . And the dust in the air that has passed through the rear filter body 483 and the lower filter body 484 is agglomerated by the water sprayed into the separation space 481 and falls onto the lower filter body 484 .

On the other hand, the loading box 400 is provided with a driving means for rotating the dirt screen 470 and the lower filter body 484 up and down.

The driving means, the driving cylinder 490 installed in the receiving space 430; a connecting member 4A0 having one end connected to the driving cylinder 490 and the other end connected to the dirt screen 470 and the lower filter body 483; a through hole (4B0) formed in the exhaust duct (460) through which the connecting member (4A0) passes; a support bracket (4C0) installed inside the exhaust duct (460) to be disposed behind the through hole (4B0) and having an auxiliary through hole (4C1) through which the connecting member (4A0) passes; a front pulley (4D0) installed on the upper side of the dirt screen (470) so as to be disposed in front of the wet filter unit (480); and a rear pulley 4E0 installed on the upper side of the lower filter body 484 .

Here, the connecting member (4A0), the connecting rod (4A1) installed to pass through the through hole (4B0) and the auxiliary through hole (4C1), one end connected to the rod of the driving cylinder (490); a first wire (4A2) having one end connected to the other end of the connecting rod (4A1) and the other end connected to the dirt screen (470) through the front pulley (4D0); and a second wire 4A3 installed to pass through the front filter body 482, one end connected to the other end of the connecting rod 4A1, and the other end connected to the lower filter body 484 via the rear pulley 4E0. ; is included.

The connecting rod 4A1 is made of a metal rod and is inserted into the through hole 4B0 and the auxiliary through hole 4C1 so as to move forward and backward.

The first wire 4A2 is bent into a 'L' shape as it passes through the front pulley 4D0 to connect the connecting rod 4A1 and the dirt screen 470 .

The second wire 4A3 is bent into a 'L' shape as it passes through the rear pulley 4E0 to connect the connecting rod 4A1 and the lower filter body 484 .

According to the driving means having the above structure, the dirt screen 470 and the lower filter body 484 can be rotated together by the operation of the driving cylinder 490 . That is, when the rod of the driving cylinder 490 is drawn out, the connecting member 4A0 is pushed back, and the dirt screen 470 and the lower filter body connected to the first wire 4A2 and the second wire 4A3, respectively. (484) is rotated downward by its own weight. In this way, in a state in which the dirt screen 470 and the lower filter body 484 are rotated downward, the operator can easily remove foreign substances accumulated on the dirt screen 470 and the lower filter body 484 .

And when the rod of the driving cylinder 490 is drawn in, the connecting member 4A0 is pulled forward, so that the dirt screen 470 and the lower filter body 484 connected to the first wire 4A2 and the second wire 4A3, respectively. ) is rotated upward by the pressure of the driving cylinder 490 .

In addition, according to the driving means of the structure as described above, as the driving cylinder 490 is disposed to be separated from the exhaust duct 460 and the loading space 450 , a space isolated from the movement path of the air by the blower 300 . is disposed on the , and thus the driving cylinder 490 can avoid fine dust passing through the dirt screen 470 and the wet filter unit 480 , thereby preventing damage or malfunction of the driving cylinder 490 .

In addition, as shown in FIGS. 1 and 2 , the road cleaning vehicle according to the embodiment of the present invention separates moisture from the air discharged from the blower 300 and sprays it into the suction unit 200 for rehabilitation. It may further include a spraying device (800).

The recycling spray device 800 includes a water separator 810 installed in the exhaust space 900, and a water collecting unit 820 installed at the lower side of the exhaust space 900 so that the water separated in the water separator 810 is stored. , a rehabilitation spray nozzle (not shown) installed in the suction unit 200, and a pipe 830 connecting the rehabilitation spray nozzle and the water collecting unit 820 . Here, as the water separator 810, various known devices capable of separating moisture from air, such as a demister, may be applied.

According to the rehabilitation spraying device 800 having the above configuration, the water discharged together with the air after being sprayed into the separation space 481 by the spray nozzle 485 of the filter unit 480 is collected and the suction unit By being sprayed inside the 200 , foreign substances sucked in by the suction unit 200 may be aggregated by moisture to be more smoothly collected. That is, according to the recycling spraying device 800, it is possible to further improve the dust collection performance of the road surface cleaning vehicle by recycling used water for dust collection.

In the foregoing, the present invention has been described with reference to limited embodiments and drawings, but it will be apparent to those skilled in the art that various modifications are possible within the scope of the technical idea of the present invention. Therefore, the protection scope of the present invention should be defined by the description of the claims and their equivalents.

100: vehicle 200: intake
300: blower 400: loading box
410: casing 411: opening
420: door 430: receiving space part
440: bulkhead 450: loading space part
460: exhaust duct 470: dirt screen
480: wet filter unit 481: separation space part
482: front filter body 483: rear filter body
484: lower filter body 485: spray nozzle
490: driving cylinder 4A0: connecting member
4A1: connecting rod 4A2: first wire
4A3: second wire 4B0: through hole
4C0 : Support bracket 4C1 : Auxiliary through hole
4D0 : Front pulley 4E0 : Rear pulley
4F0: Water storage space 4G0: Bottom plate
4H0 : Fixture 4I0 : Door open/close cylinder
4J0: Cylinder cover 500: Brush
600: water spray nozzle 700: loading and unloading cylinder
800: rehabilitation spray device 810: water separator
820: water collecting part 830: piping
900: exhaust space

Claims (5)

a suction unit 200 installed under the vehicle 100 and configured to suck foreign substances from the road surface;
a blower (300) mounted on the vehicle (100) and configured to provide a suction force to the suction unit (200); and
It is mounted on the vehicle 100, the loading box 400 in which foreign substances sucked by the suction unit 200 are accommodated; including,
The loading box 400 is
a casing 410 having an opening 411 formed on its rear surface;
a door 420 installed on the rear surface of the casing 410 to open and close the opening 411;
a receiving space portion 430 formed to be downwardly open on the entire inner side of the casing 410 and accommodating the blower 300;
It is formed in the inner rear of the casing 410 so that the front is partitioned from the receiving space 430 by the partition wall 440 and the rear communicates with the opening 411, and is sucked by the suction unit 200. a loading space 450 in which foreign substances are accommodated;
an exhaust duct 460 formed on the inner upper portion of the casing 410 to connect the loading space 450 and the intake port of the blower 300;
It is installed to open and close the exhaust duct 460 by being vertically rotatably installed on the upper portion of the loading space 450 , and in the loading space 450 in a state rotated upward to close the exhaust duct 460 . a dirt screen 470 for filtering foreign substances from the air flowing into the exhaust duct 460; and
A wet filter unit 480 that is installed on the upper side of the dirt screen 470 and filters out dust from the air that has passed through the dirt screen 470;
The wet filter unit 480,
A front filter body 482 and a rear filter which are installed to be spaced apart from each other before and after with the separation space portion 481 interposed therebetween, respectively, to block the space between the dirt screen 470 and the ceiling of the casing 410 . sieve 483; and
The front filter body 482 and the rear filter body 483 are formed to connect both ends and the lower end, and the front end is rotatably coupled to the lower end of the front filter body 482 in an upward and downward direction so as to be spaced apart when rotated upward. A lower filter body 484 that closes both sides and lower sides of the space 481 and opens both sides and lower sides of the separation space 481 when rotating downward. A road sweeper with an improved wet filter.
According to claim 1,
The wet filter unit (480) is installed in the rear filter body (483) to spray water into the separation space (481) fine dust collection performance, characterized in that it further comprises a spray nozzle (485) A road sweeper with an improved wet filter.
3. The method of claim 2,
A wet filter with improved fine dust collection performance, characterized in that it further includes a recycling spraying device 800 that separates moisture from the air discharged from the blower 300 and sprays it inside the suction unit 200 road cleaning vehicle.
delete 4. The method according to any one of claims 1 to 3,
The loading box 400 is provided with a driving means for vertically rotating the dirt screen 470 and the lower filter body 484,
The driving means is
a driving cylinder 490 installed in the receiving space 430;
a connecting member (4A0) having one end connected to the driving cylinder (490) and the other end connected to the dirt screen (470) and the lower filter body (484);
a through hole (4B0) formed in the exhaust duct (460) through which the connecting member (4A0) passes;
a support bracket (4C0) installed inside the exhaust duct (460) so as to be disposed behind the through hole (4B0) and having an auxiliary through hole (4C1) through which the connecting member (4A0) passes;
a front pulley (4D0) installed on the upper side of the dirt screen (470) so as to be disposed in front of the wet filter unit (480); and
and a rear pulley (4E0) installed on the upper side of the lower filter body 484;
The connecting member (4A0) is,
a connecting rod (4A1) installed to pass through the through hole (4B0) and the auxiliary through hole (4C1), one end connected to the rod of the driving cylinder (490);
a first wire (4A2) having one end connected to the other end of the connecting rod (4A1) and the other end connected to the dirt screen (470) through the front pulley (4D0); and
A second wire 4A3 installed to pass through the front filter body 482, one end connected to the other end of the connecting rod 4A1, and the other end connected to the lower filter body 484 via the rear pulley 4E0. ); A road cleaning vehicle equipped with a wet filter with improved fine dust collection performance, characterized in that it includes.

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