JP2001293440A - Device for removing coating material and deposited material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove coating materials and deposited materials from the surfaces of a road, a concrete structure and a metal without damaging the base by using very high pressure water. SOLUTION: Plural nozzles 16 for spraying very high pressure water downward are attached to a bar-shaped rotary body 2 having a rotating/supporting shaft 1 in its center. The outside nozzles 16 are inclined. More outer the nozzles, larger than angle of inclination of the nozzle is made.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a removing device for removing paint and deposits on the surface of roads, concrete structures, metals and the like using ultra-high pressure water.

[0002]

2. Description of the Related Art Conventionally, in order to remove paints and deposits on the surface of roads, concrete structures, metals, and the like, there have been carried out mechanical removal methods such as sanders and picks, and removal methods using high-pressure water. In particular, in the method using high-pressure water, one to four nozzles are attached to the rotating body, and the entire nozzle is mounted in a vertical or inclined state. It is known to remove paints and deposits with water.

[0003]

In the conventional removing method, when removing paint or attached matter on the surface of an object, the number of nozzles is small and all the nozzles are mounted vertically downward. The amount of water jetted from the high-pressure water nozzle against the object to be removed increases, or the amount of energy removed from the target surface increases due to the fact that the jet water hits the object to be removed vertically, without damaging the groundwork. Only paints and deposits could not be removed cleanly. That is, in the case of removing a paint or an adhering substance, in the case of an asphalt road or a concrete structure having insufficient strength of the foundation, the paint or the adhering substance is removed and the substrate is scraped. Especially on asphalt roads, there is a problem that it takes a lot of time and money to repair it as well as it can not finish the work within the set time, which may lead to traffic congestion there were.

According to the present invention, the number of spray nozzles is increased to reduce the amount of spray water per nozzle, and by changing the spray angles of some of the nozzles, the removal surface per nozzle per target nozzle is changed. Removal equipment that removes paint and deposits efficiently by reducing the injection and removal energy while increasing the number of nozzles to increase the density of the spray water and making the overall removal energy equivalent. It is intended to provide.

[0005]

[Means for Solving the Agenda] In order to achieve the above object, at least a plurality of downward nozzles are provided on both sides of the rotating support shaft at the same number on a rod-like rotating body having a rotating support shaft at the center. At the same time, this rotating body is covered with a cylindrical cover with an open lower end, and has a structure that can be moved horizontally,
Ultra-high pressure water is jetted from this nozzle and the rotating body is rotated horizontally about a rotating shaft to remove paint and deposits on the surface of roads, concrete structures, metals and the like.

[0006] At least a plurality of downward nozzles are provided on both sides of the rotating body around a rotation support shaft at the same number, and a lower end of the rotating body is opened, and a suction port is provided on the upper surface or side surface for reducing the pressure inside the cover. It is covered with a cylindrical cover provided with and has a structure that can be moved horizontally, sprays ultra-high pressure water from this nozzle and sucks the inside of the cover to reduce the pressure, and rotates the rotating body about the rotating shaft. Paints and deposits on the surfaces of roads, concrete structures, metals, etc. are removed, and the peeling paints, deposits and treated water are removed by suction.

Further, the rotating body has a structure that is integral with the rotating shaft or can be detached from the rotating shaft.

The nozzles provided on the rotating body are arranged linearly downward along the rotating body, and at least a plurality of nozzles provided at a distance close to the rotation support shaft are vertically downward, and at least a plurality of nozzles provided on the outer side therefrom. Each nozzle has an inclined structure.

At least a plurality of nozzles provided on the rotating body are structured to be mounted at positions different from each other on the left and right with respect to a rotation support shaft.

[0010] Of the nozzles attached to the rotating body, a plurality of inclined nozzles have a structure in which the inclined angle is gradually increased from the center of the rotating body toward the outside.

A high-pressure water passage hole connected to each nozzle is provided inside the rotary body, and high-pressure water is supplied through the rotary support shaft.

The nozzle attached to the water hole of the rotating body has a structure that can be fixed or detachable.

The rotating body to which the nozzle is mounted is capable of freely changing the distance from the removing surface on the rotating shaft in a fixed or vertical direction.

The cylindrical cover provided around the rotating body has a structure in which the height can be fixed or can be freely expanded and contracted.

The rotating body provided with the nozzle is rotated by a driving device.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. In the embodiment shown in FIG. 1, a rotating body 2 having a rotation support shaft 1 at the center is covered with a cylindrical cover 3 having an open lower end, and the cylindrical cover 3 and the frame 6 are attached to the frame. It is fixed at the part 7. The frame body 6 is provided with a front wheel 8 and a rear wheel 9 so that the paint removing surface 4 can be moved back and forth. The movement is performed manually by holding a handle 11 of an operation handle 10 provided integrally with the frame 6. Also, the high-pressure hose mounting portion 13 of the rotating shaft fixing portion 5
, A high-pressure hose 14 is attached to the rotary drive unit 12, and a hose 15 for compressed air is attached to the rotary drive unit 12. The high-pressure hose 14 is connected to an ultra-high pressure generator A and a compressed air generator B, respectively.

The ultra-high-pressure water from the ultra-high-pressure water generator A is supplied from the high-pressure hose 14 to the rotating shaft fixing portion 5 by the high-pressure hose mounting portion 13, and the supplied ultra-high pressure water is supplied to the rotating shaft 1. And is sprayed from the nozzle of the rotating body 2 to the surface of the paint or the attached matter. On the other hand, the rotation support shaft 1 is provided with a rotation drive unit 12 for rotating the rotation support shaft 1 by air driving, and the rotating body 2 is rotated at 1800 rpm by compressed air from an air supply source. p. from m to 250
0r. p. m and can be rotated at high speed. Further, the rotation speed of the rotating body 2 can be changed by the pressure and the flow rate of the compressed air.

FIG. 2 shows a detailed view of the rotating body 2, the rotating shaft 1, and the rotating shaft fixing portion 5 in the embodiment shown in FIG. The rotating body 2 includes a fixed portion 2a for attaching to the rotating shaft 1, and two nozzle fixing portions 2 attached to both sides of the fixed portion.
b, 2c. A water hole 2 penetrating through the center of the rotating shaft fixed part 5, the rotating shaft 1, and the rotating body 2.
2 are provided. The water passage hole 22 is connected to a plurality of downward nozzle holes 23 and 24 provided in the rotating body 2,
Ultra high pressure water can be sprayed evenly. As shown in FIG. 3, the nozzle is attached to the nozzle hole by inserting the nozzle 16 into each of the nozzle holes 23 and 24 and fixing the screw 3.
Fixed at 0. A packing 29 is provided in the sheet portion of the nozzle mounting hole 28 for inserting the nozzle 16 to prevent water leakage.
There is.

The nozzle fixing portions 2b, 2c of the rotating body 2
Has the same number of four to ten downward nozzle holes 23 and 24 on both sides of the rotary shaft 1 as a center, and their mounting positions are different on the left and right. That is, the rotating body 2
In the case of rotating and removing, the nozzles 16 of the left and right rotating bodies are mounted at different positions in order to remove the entire removal surface without leaving a clean area. As a result, the distance from the center of the nozzle fixing positions of the nozzle fixing portions 2b and 2c is alternately shifted, so that the entire removal surface can be covered without overlapping the trajectories of the jet of water from the nozzle during rotation.

The upper end of the rotating shaft 1 is in contact with the lower end of the rotating shaft fixing portion 5, and the contact between the rotating shaft 1 and the rotating shaft fixing portion 5 has a sealing structure by metal bonding. I have. In addition, the rotation support shaft 1 and the rotation shaft fixing portion 5 have a structure that can rotate at a metal joint and can seal ultra-high pressure water. A rotation driving device 12 is provided below the rotation shaft fixing portion 5, and a bearing 17 is incorporated in the rotation driving device 12 for smooth rotation driving. The outside of the bearing 17 is covered with a casing 18.

Further, the rotating shaft fixing unit 5 and the rotation driving device 1
2, the bearing 17 and the rotating shaft 1 are integrated, and inserted into a cover mounting opening 27 provided at the center of the cover 3 integrated with the frame 6, so that the distance from the paint removing surface 4 of the rotating body 2 is reduced. Adjust, insert the adjustment plate 19 of the required height,
The shaft mounting portion 20 and the cover mounting opening 27 are fixed by bolts 25 and nuts 26. The rotating body 2 is provided at the end tapered portion of the rotating shaft 1.
Is fixed by inserting the fixing portion 2a and tightening it with a fixing nut 21.

Conventionally, the number of nozzles is limited to four, but in the present invention, usually four to ten nozzles are mounted on both sides of the rotating spindle 1. One to three to five nozzles from the rotary support shaft 1 are vertically downward nozzles 16a so that the nozzle holes 23 are attached at equal intervals.
Is provided. Further, the nozzle holes 24 are formed obliquely so that the remaining nozzles 16b can be attached in a state inclined with respect to the vertical.

The inclination angle of the inclined nozzle hole 24 is formed so that the spray water is directed outward with respect to the rotating body 2. Further, the inclination of the nozzle hole 24 is made so that the inclination angle becomes larger toward the outside from the center of the rotating body 2. Note that the inclination angle of the nozzle 16b and the inclined nozzle hole 24 is between 5 ° and 30 ° with respect to the vertical, and specifically, in consideration of characteristics such as the type, hardness, and thickness of the object to be removed. To decide.

In the embodiment shown in FIG. 4, a suction port 33 for reducing the pressure inside the cover and adjusting it to a negative pressure is provided at the upper end of the outer cover which covers the rotating body 2 in the present invention. . The suction port 33 is formed integrally with the outer cover 32, and has a structure in which a suction hose is inserted into the suction port 33 and fixed to the suction port 33. The suction port 33 is located on the side of the cylindrical portion of the outer cover 32 opposite to the moving handle 10 and can be connected to a suction device via a suction hose. Of course, the outer cover 32 is integral with the frame 6, and the frame 6 is provided with wheels at the front and rear.
It has a structure that can be moved back and forth by holding the handle 10 for movement.

Further, the cover has a double structure of an inner cover 31 and an outer cover 32, and the gap between the inner cover 31 and the paint removing surface can be adjusted by raising and lowering the height of the inner cover 31. Has become. As for the height adjustment, the gap from the paint removing surface 4 is adjusted to be constant, and then the outer cover 32 is fixed to the inner cover 31 at several places with bolts fixed to the inner cover 31. Of course, by fixing the inner cover 31 to the top plate on the inner surface of the outer cover 32 with springs, a structure that can move up and down with respect to irregularities on the removal surface when the apparatus is moved may be used. good. The lower portion of the inner cover 28 is provided with cushioning rubber or brush-like bristles to prevent the inner cover 31 from directly touching the paint surface and to increase the suction efficiency.

The present invention is constituted as described above. When using the present invention, the high pressure water outlet of the ultra high pressure water generator and the high pressure water supply port of the removing device of the present invention are connected by a high pressure hose. The removal apparatus of the present invention has a pressure of 1500 kg /
It requires ultra-high pressure water at a pressure of 15 l / min to 20 l / min at a pressure of ² to 2500 kg / kg from cm ² to 2500 kg / kg.

Next, as a driving device for rotating the rotating body 2 at a constant speed, an air hose from an air compressor is attached to a removing device for sending compressed air for driving an air motor. First, 3 kg / cm ² from the air compressor B
5 kg / cm ² of compressed air is sent to the air removing device and the air valve is opened to drive the air motor to rotate the rotating body 2. Of course, the distance between the rotating body 2 and the object to be removed is adjusted in advance so that the rotating body 2 does not come into direct contact with the floor, a road, or the like to be damaged. The removal operation may be started after confirming the jet water from the nozzle 16.

Normally, the supply of the ultra-high pressure water is performed by sending an electric signal to the ultra-high-pressure water generator and increasing the rotation of the engine to send out the ultra-high-pressure water. A lever is attached to 11, and when the lever is grasped, a signal is sent to the ultra-high pressure generating device, and the rotation of the engine is increased to feed water. In such a state, the paint and the attached matter are removed. In the operation, the removal device may be moved back and forth with the handle 10 while observing the state of the removal.

Further, in the case of the present invention shown in FIG. 4, the inside of the cover is configured to be sucked and decompressed. As described above, a high-pressure water hose is attached to the removing device of the present invention and connected to an ultra-high pressure generating device. The compressed air for rotating the rotating body 2 is connected to the air intake of the air motor by an air hose. A suction hose is inserted into the suction port 33 of the cover 32 and fixed with a hose band, and the end thereof is connected to a suction device. Further, the height of the cover is adjusted to enhance the suction effect. That is, the inner cylinder is moved up and down in advance to shorten the distance from the lower paint surface. The lower portion of the inner cylinder is provided with cushioning rubber or brush-like bristles so that the inner cylinder does not directly touch the partition and enhances the suction efficiency.

In this state, the air motor is driven and suction is started. Ultra-high pressure water is sprayed to remove the paint and the attached matter, and the inside of the cover is suctioned and decompressed to remove the removed paint and the attached matter. Or, the injected water can be sucked and collected. Therefore, the surroundings are not stained or wet during the removal operation.

The removing apparatus of the present invention is made of metal as a whole, and has a structure capable of sufficiently withstanding the impact and abrasion from the scattered matter accompanying the removing operation. In particular, the rotating body and the nozzle portion are made of a structure and a material in consideration of wear resistance. Further, the front and rear wheels are made of rubber or polyurethane entirely or partially to prevent the device from slipping due to water, and to be designed to have a weight to withstand lifting of the device due to the reaction force of the jet water.

[0032]

[Table 1]

Normally, according to the present apparatus, test results as shown in Table 1 can be obtained. According to the test construction, the white line paint on the asphalt road, which was difficult to remove only the paint on the surface without softening the surface and
With the work of time, the asphalt of the base can be removed without damaging the base asphalt with a width of 25 cm and a length of 2 km.

[0034]

Since the present invention is configured as described above, it has the following effects.

When a plurality of nozzles are mounted on a rod-shaped rotating body and ultra-high-pressure water is sprayed from the nozzles onto a surface to be treated to remove paint and deposits, the number of nozzles is increased and some of the nozzles are used. By inclining, it is possible to cleanly remove the partition without damaging it.

Since ultra-high pressure water is used, the amount of water used can be reduced and an efficient removal operation can be performed.

By using a rotating body having a large number of nozzles attached to the rotating body, the area that can be removed can be increased, thereby improving work efficiency.

A plurality of nozzles among the nozzles of the rotating body are inclined outward, so that it is possible to accurately remove even the periphery of the cover which cannot be removed normally.

Further, since the rod-shaped rotating body is rotated by a driving device such as an air motor, the number of rotations of the rotating body can be accurately controlled, so that the removal speed and the removal surface can be finished in the same state.

When removing white lines written on asphalt roads, which has been difficult in the past, especially when removing white lines, only white lines can be removed without damaging the asphalt of the road.

Since the device is small, lightweight and simple in structure, it is easy to carry out and easy to carry.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a removing device.

FIG. 2 is a detailed sectional view of a rotating body and a rotating shaft.

FIG. 3 is a detailed sectional view of a nozzle attachment portion.

FIG. 4 is a longitudinal sectional view of a removing device capable of sucking the inside of the cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Rotating body 2 Rotating part 2a fixing part 2b nozzle fixing part 2c nozzle fixing part 3 Cover 4 Paint removal surface 5 Rotating shaft fixing part 6 Frame 7 Frame mounting part 8 Front wheel 9 Rear wheel 10 Handle 11 Handle Handle 12 Rotation drive unit 13 High pressure hose attachment unit 14 High pressure hose 15 Air hose 16 Nozzle 16a Vertical downward nozzle 16b Inclined nozzle 17 Bearing 18 Casing 19 Adjustment plate 20 Shaft attachment unit 21 Fixed nut 22 Water passage hole 23 Vertical nozzle hole 24 Inclined nozzle hole 25 Bolt 26 Nut 27 Cover mounting port 28 Nozzle mounting port 29 Packing 30 Fixing screw 31 Internal cover 32 External cover 33 Suction port

Claims (11)

[Claims] 1. At least one rod-shaped rotating body (2) having a rotating shaft (1) at the center, and at least a plurality of downward nozzles (13) on both sides of the rotating shaft.
Are provided in the same number, and the rotating body is covered with a cylindrical cover (3) having an open lower end so that the rotating body can be moved horizontally. A device for removing the paint and attached matter on the surface of roads, concrete structures, metals, etc. by rotating horizontally to 2. The rotating body is provided with at least a plurality of downward nozzles at least on both sides around a rotation support shaft, the lower end of the rotating body is opened, and the inside of the cover is depressurized on the upper surface or the side surface. It is covered with a cylindrical cover (31, 32) provided with a suction port (33) and can be moved horizontally. This nozzle sprays ultra-high pressure water, and the inside of the cover is suction-depressurized, and the rotating body is rotated. A device that removes paint and deposits on the surface of roads, concrete structures, metals, etc., and removes peeling paint, deposits, and water by rotating around a support shaft. 3. The removing device according to claim 1, wherein the rotating body has a structure integral with a rotating support shaft or detachable from the rotating support shaft. 4. A nozzle (16) provided on the rotating body is disposed linearly downward along the rotating body, and at least a plurality of nozzles (16) provided at a distance close to the rotation support shaft.
3. The removing device according to claim 1, wherein a) is vertically downward, and at least a plurality of nozzles (16b) provided outside the inclined structure are inclined. 5. A structure in which at least a plurality of nozzles (16) provided on the rotating body are mounted at positions different in left and right from a center about a rotation support shaft.
3. The removing device according to 2. 6. A nozzle attached to the rotating body,
3. The removing device according to claim 1, wherein the plurality of inclined nozzles have a structure in which the inclination angle is sequentially increased from the center of the rotating body toward the outside. 7. Each nozzle hole (2) is provided inside the rotating body.
3. The removal device according to claim 1, further comprising a high-pressure water passage hole (22) connected to the third and fourth passages, wherein the high-pressure water is supplied through the rotary support shaft. 8. The removing device according to claim 1, wherein the nozzle (16) attached to the water hole of the rotating body has a fixed or removable structure. 9. The removing apparatus according to claim 1, wherein the rotating body to which the nozzle is attached has a structure in which a distance from a removing surface can be fixed or freely changed in a vertical direction. 10. The removing device according to claim 1, wherein the cylindrical cover provided around the rotating body has a structure in which the height can be fixed or the height can be changed vertically. 11. The removing device according to claim 1, wherein the rotating body provided with the nozzle is rotated by a driving device (12).