KR20190124873A - Air blast machine - Google Patents

Abstract

The present invention relates to an air blast machine for processing the surface of a structure before painting work of a structure or a vessel. More specifically, the air blast machine comprises: ground device supporting work while driving on the ground; and a blast body connected to the ground device by a supply pipe and a collection pipe and working while moving by being attached to a work surface on the ground. The ground device includes: a supply unit supplying grits and including a grit collecting unit including a vacuum pump and an air pump generating high pressure air; and a storage tank storing the grit. The blast body comprises a tray, a base plate, a waving block, a waving unit, a working chamber, a steel inner body, and an alloy outer body.

Description

Air blast machine

The present invention relates to an air blast machine for processing a surface of a structure before painting a ship or a structure, and more particularly, to supply a grit including a grit recovery unit including a vacuum pump and an air pump generating high pressure air. It is equipped with a storage tank for storing the supply part and the grit to constitute the ground equipment to support the operation while operating on the ground (Blast) connected to the ground equipment and the supply pipe and the recovery pipe attached to the working surface of the ground to move and work An air blast machine composed of a body, the present invention relates to an air blast machine that allows the blast body to perform a stable operation.

Since the construction of a ship is made by welding several steel plates to form a hull in a general manner, the bottom surface and the welding line are always soiled by impurities such as fire damage and welding residues generated during welding. Do.

In addition, since the joint part of the hull shell plate does not have a separate protective coating film, etc. after welding, it is easily corroded and contaminated, so paint should be applied.

At this time, in order to apply the coating, before the painting process, contamination and rust of the welding part must be removed in advance through surface treatment such as grinding or spraying abrasive.

Until now, most of the polishing work using manual power tools has been performed until now, but this causes a lot of dust during the work, which hinders the clean working environment and transmits vibration to the worker as it is, causing a musculoskeletal disorder to the worker. . However, surface clean-up work on the hull is difficult and dangerous in the working environment, and manual work is limited.

The blasting machine was developed to protect workers and prevent abrasives from scattering to clean the working environment. Looking at the patent literature on the blasting machine that has been invented and carried out so far as follows.

Patent Application No. 10-2010-0086938 (2010.09.06) discloses a grit vacuum recovery device which improves the vacuum suction force of the grit, has a constant vacuum suction force on various bottom surfaces, and has a structurally stable driving mechanism. A grit vacuum recovery device is fixed to an end of a robot end effector and recovers grit using a vacuum pressure, the grit vacuum recovery device comprising: a recovery nozzle for sucking the grit and an inclined fixation of the recovery nozzle with respect to a floor; And an inclined plate, a fixed member connected to the inclined plate and movable up and down with respect to the robot end effector, and a guide roller fixed to the fixed member and cloudable relative to the bottom surface. Therefore, precise robot position control is unnecessary. For example, the robot can be used to perform effective vacuum recovery even on uneven floors. Patent application No. 10-2011-0078598 (August 08, 2011), which covers the surface, ceiling and floor of a built building, and allows scattering dust generated at this time to be collected dry without using water. The present invention relates to a surface treatment apparatus that can effectively improve the workability and working environment for a cup-shaped ring brush provided with a brush contacting the surface of a structure member along a lower circumference, and installed inside the ring brush toward the surface of the structure member. An injection nozzle for spraying the abrasive at high pressure, a recovery chamber connected to the ring brush and the scattering dust generated from the surface of the structural member by vacuum pressure, an abrasive connected to the recovery chamber and sucked into the recovery chamber; The dust collecting chamber which filters the abrasive among the scattering dust to collect the scattering dust, and is connected to the injection nozzle to feed and supply the abrasive. And a pressurized chamber connected to the lower side of the recovery chamber to recover the abrasive sucked into the recovery chamber, the upper and lower openings being coupled to the inner side of the ring brush in the form of an open ring, and the structure A brush contacting the surface of the member is provided along the bottom circumference, and further comprises an auxiliary ring brush to form a double wall spaced apart from the ring brush at the bottom. Patent application No. 10-2011-7023048 (2010.09.10) efficiently recovers the abrasive, and can minimize the size of the device, such as a separation device for generating a suction force to recover the abrasive, And a blast processing apparatus provided with a spray material recovery device, the blast processing device comprising: a recovery device for recovering dust generated by a workpiece by blast processing and the spray material sprayed by the spray device; And a suction device for sucking and recovering the dust generated by the workpiece by the blasting and the blasting material in the anti-diffusion covering. The blast processing device prevents the diffusion of the abrasive and the dust by the diffusion preventing covering, Aspirates and discharges the abrasive and dust at a position adjacent to the work piece using the outside air sucked through Propellant and dust can be recovered efficiently. Patent Application No. 10-2012-0036684 (2012.04.09) relates to a crossbar tumbling type shot blasting apparatus, comprising: a polishing drum to which a product to be polished is transferred; An impeller for ejecting an abrasive to the product to be polished in the polishing drum; And rotating means installed outside the polishing drum to rotate the polishing drum so that the polishing material is projected onto the entire surface of the product to be polished, wherein the inner surface of the central portion of the polishing drum includes: In accordance with the rotation of the polishing drum, the lower part of the polishing object is in contact with the inner surface of the polishing drum is engaged to induce the polishing object to fall, but the direction of rotation of the polishing drum from the inner surface of the central portion of the polishing drum A plurality of bars protruding in the axial direction of the polishing drum perpendicular to the direction of the polishing drum, the shot blasting apparatus provided with a conductive member for forming the inner surface of the central drum portion. Patent application No. 10-2012-0099111 (2012.09.07) relates to a blasting apparatus, the first inner frame to provide a polishing space for the object and the first outer frame to form a first gap with the first inner frame And a second cover part including a first cover part including a second inner frame providing the polishing space together with the first inner frame, and a second outer frame forming a second gap with the second inner frame. The second outer frame has an air suction hole for sucking air in the separation space formed by the first gap and the second gap such that the first inner frame and the second inner frame are in close contact with each other. The shape of the region of the first cover portion and the region of the second cover portion in close contact with the object corresponds to the shape of the outer surface of the object, and is the lower of the first inner frame and the second inner frame. At least one has a dust suction hole in communication with the polishing space, and the dust suction hole is a blasting device in communication with the separation space and the air suction hole. Patent application No. 10-2012-7017506 (2010.09.01) eliminates the dead space of the cover body which closes the opening part for input and discharge of a workpiece, and simultaneously opens and closes the cover body with the revolution (rotation) of a rotating drum. The present invention relates to a shot blasting apparatus, and includes a cabinet, a rotating drum with holes, and a centrifugal projector. The rotary drum is disposed within the cabinet so as to be rotatable between the respective working positions of inputting, processing and discharging the workpiece. The cabinet is provided with a cover body which closes the opening for injecting and unloading the said to-be-processed object. It has a seal wall at the opening side of the cabinet. The cover body is integrally attached to the rotating drum to rotate and has a circumferential wall portion that can be fitted to the seal wall portion. A gap between the circumferential wall portion of the lid and the seal wall portion is disposed and sealed with a lip-shaped sealing material.

However, the air blasting machine that has been developed and implemented so far has a fixed working radius due to spraying the grit with a fixed nozzle for spraying the blast of the blast body which actually performs the work, thereby reducing the work efficiency and the weight of the blast body. The cursor blast body was separated from the working surface there was a concern that causing a safety accident, in the present invention is to solve the above problems to achieve a stable and efficient work.

In order to solve the above problems, a grit recovery unit including a vacuum pump and a supply unit for supplying a grit including an air pump for generating high pressure air and a storage tank for storing the grit support operation while operating on the ground. (Supporter) is composed of a blast body that is connected to the ground equipment and the supply pipe and the recovery pipe and attached to the working surface of the ground to work while moving, the high pressure air generated from the air pump The blast is supplied to the supply hole through the supply pipe together with the grit and sprayed to the mouse of the work room by the nozzle to perform the blasting operation and to construct the air blast machine which is recovered to the ground equipment through the grit recovery hole connected to the vacuum pump and the recovery pipe. The body has a magnet that generates magnetic force adjacent to the floor A tray mounted and provided with wheels; A base plate mounted on the tray and formed of an alloy forming a spray tunnel; A wave block which is formed in such a manner that the supply hole and the nozzle are integrally formed in the upper portion of the base plate, and the nozzle is positioned in the injection tunnel; Wave means for performing a wave motion to rotate the wave block left and right; The workshop consists of an inner body made of steel with high wear resistance and an outer body made of an alloy configured to integrally surround the outer circumferential surface so that the grit sprayed from the nozzle formed on the wave block on the lower side of the base plate is sprayed on the working surface through the mouse. and; It consists of the inner body of the wear-resistant steel and the outer body of the alloy to recover the grit, which is performed on one side of the work chamber by vacuum pressure, the wave block configured with the nozzle, the wave block around the injection tunnel of the base plate An arc-shaped pedestal and guide bush for guiding operation are installed, and a wave-guiding guide integrated with the wave-block is provided by integrally installing a wave guide having a curved surface corresponding to the arc of the pedestal and the guide bush at the bottom of the nozzle of the wave block. Guide wave is guided and configured to move the left and right, and the wave means is equipped with a waveshaft constituting an eccentric cam at the tip of the motor and a cam guide made of a rectangular ring on the wave block to rotate the wave block by driving the motor. It is configured to operate the wave, the mouse of the work room rubber or thread But consists of a cone, it constitutes a lip forming a groove in the inwardly folded "c" shaped in the inner periphery.

According to the present invention, the air blast machine is divided into ground equipment for supporting work and a blast body for working, and these are connected to a supply pipe and a recovery pipe, so that the injection nozzles of the blast body rotate left and right. The work radius is improved and the part that directly rubs the grit with the grit is composed of steel plate, and the outer surface and other frames are made of light aluminum alloy material to reduce the weight of the blast body and merge it with the magnetic force and vacuum pressure of the magnet. Stable work is possible by making it adhere to the surface, and strong vacuum pressure prevents the scattering of grit or work dust to clean the working environment, and at the same time, the silicon packing is formed on the friction part where the nozzle is moving so that the working dust gets stuck in the moving part. There is no fear of disturbing the movement or causing breakdown Is a novel invention that creates an effect.

Figure 1 is an illustration of the configuration of the blast body which is the main part of the present invention.
Figure 2 is a side cross-sectional view of Figure 1 illustrating the main configuration of the blast body of the present invention.
Figure 3 is another cross-sectional view of Figure 1 showing the main structure of the blast body of the present invention.
Figure 4 is an exemplary view of the tray separation state of the blast body of the present invention.
5 is an exploded view illustrating main parts of the present invention.
6 is an exemplary view of the use state of the present invention

Referring to the configuration of the present invention in detail with reference to the accompanying drawings as follows.

It is equipped with a grit recovery unit including a vacuum pump, a supply unit for supplying a grit including an air pump for generating high pressure air, and a storage tank for storing the grit so as to support the operation while operating on the ground. Comprised of the blast body 100 and working while attaching and moving to the ground equipment 200 and the supply pipe and the recovery pipe attached to the working surface of the ground, the blast body 100 of the high pressure generated in the air pump The air is supplied to the supply hole 31 through the supply pipe together with the grit, and the nozzle 32 is sprayed to the mouse 45 of the working room 40 to perform a blasting operation and the grit recovery hole 50 connected to the vacuum pump. In constructing an air blast machine that is recovered to the ground equipment 200 through the recovery pipe,

The blast body 100 includes a tray 10 mounted with a magnet 11 generating magnetic force adjacent to a bottom surface and having wheels 11;

A base plate 20 made of an alloy mounted on the tray 10 and forming a spray tunnel 21;

The supply block 31 made of steel with high wear resistance and the nozzle 32 are integrally inserted into the base plate 20 so that the nozzle 32 is installed in the injection tunnel 21. )and;

Waving means for performing a waking operation of rotating the waving block 30 left and right;

The inner body 41 made of steel having high wear resistance such that the grit sprayed from the nozzle 32 formed on the wave block 30 under the base plate 20 is sprayed onto the working surface through the mouse 45 and the work is performed. A working room 40 composed of an outer body 42 made of an alloy configured to integrally surround the outer circumferential surface;

Grit recovery hole 50 composed of an inner tube 51 made of a strong wear-resistant steel and an outer tube 52 made of an alloy so as to recover the grit performed on one side of the working chamber 40 by vacuum pressure. Configure.

Here, the wave block 30 configured with the nozzle 32 is provided with an arc-shaped pedestal 70 and a guide bush 71 for guiding the wave motion around the injection tunnel 21 of the base plate 20. On the lower end of the nozzle 32 of the 30 is mounted integrally with the wave block 30 by integrally installing the wave guide 35 having a curved surface matching the arc shape of the pedestal 70 and the guide bush (71). The wave guide 35 is guided to the guide bushing 71 to configure left and right wave motions.

The wave means is equipped with a wave shaft 82 constituting an eccentric cam at the tip of the motor 81, and a wave guide 30 is mounted with a cam guide 36 made of a rectangular ring to drive the wave 81 by driving the motor 81. Block 30 is configured to rotate left and right and to operate the wave.

The mouse 45 of the working room 40 is composed of rubber or silicone, but constitutes a lip 60 formed with an inwardly "c" shaped folding groove 61 on the inner circumference.

Referring to the embodiment of the present invention as described above.

In forming the blast body 100 illustrated in FIG. 1, as shown in FIG. 2, the magnet 15 generating magnetic force on one side of the tray 10 having the wheels 11 is adjacent to the bottom surface. Mount it.

Thus, the mounting of the magnet 15 is to prevent the blast body 100 is separated from the working surface when the vacuum suction input is removed during the operation or the operation is completed.

And, referring to the configuration of the main portion constituting the blast body 100 of the present invention with reference to Figures 3 to 5, the base plate 20 made of an alloy formed with the injection tunnel 21 to the tray 10 To be mounted.

The wave block 30 is installed on the upper side of the base plate 20 so that the nozzle 32 is positioned in the injection tunnel 21, and the wave 32 rotates to the left and right by the wave means formed by the motor 81.

As described above, the rotating blocks 30 rotate left and right in order to spray the grit sprayed from the nozzle 32 evenly from side to side on the working surface.

Here, the part directly rubbed with the grit such as the supply hole 31 and the nozzle 32 is made of a steel material having high abrasion resistance, and the other wave block 30 is made of a light alloy material and integrally insert-molded.

This configuration is intended to reduce the overall weight of the blast body (100).

In addition, the inner body 41 made of steel having high abrasion resistance such that the grit sprayed from the nozzle 32 formed on the wave block 30 under the base plate 20 is sprayed onto the working surface through the mouse 45 to work. The working chamber 40 is constituted by an outer body 42 made of an alloy configured to integrally surround the outer circumferential surface thereof.

One side of the working chamber 40 is composed of a grit recovery hole 50 composed of an inner tube 51 made of abrasion resistant steel and an outer tube 52 made of an alloy so as to recover the performed grit under vacuum pressure. do.

This configuration is also to reduce the overall weight of the blast body (100).

Here, the wave block 30 configured with the nozzle 32 is provided with an arc-shaped pedestal 70 and a guide bush 71 for guiding the wave motion around the injection tunnel 21 of the base plate 20. On the lower end of the nozzle 32 of the 30 is mounted integrally with the wave block 30 by integrally installing the wave guide 35 having a curved surface matching the arc shape of the pedestal 70 and the guide bush (71). The wave guide 35 is guided to the guide bushing 71 to configure left and right wave motions.

Such a configuration is to prevent the grit and the dust generated by the work is sprayed from the nozzle 32 during the waving operation to interfere with the waving operation by cutting into the operating portion of the wave block 30.

In addition, the weaving means for operating the wave block 30 is a cam guide 36 having a rectangular ring on the wave block 30 and a wave shaft 82 constituting an eccentric cam at the tip of the motor 81. Rotational movement while the cam of the waveshaft 82, which is affixed to the motor 81 by the driving of the motor 81, guides the cam guide 36 of the rectangular ring integrally coupled to the wave block 30. By turning to the rotational motion, the wave block 30 rotates to the left and right to move the wave.

Mouse 45 is sprayed from the nozzle 32 of the working room 40 is configured to work substantially on the working surface is composed of rubber or silicon on the outer peripheral surface, the inner circumferential inward "c" shaped folding groove ( The lip (60) forming the lip (60) is formed, and thus forming an inwardly "c" shaped folding groove 61 on the inner circumference thereof when the vacuum pressure for sucking the working grit is applied. ), The outside air is introduced into the working room so that the grit or the working dust does not leak to the outside, and a suction force is generated between the working surface and the blast body 100, and when the vacuum pressure is weakened or removed, the folding groove 61 is Unfolded lips 60 is sealed between the mouse 45 and the working surface to create a comfortable working environment.

The present invention described above can be usefully used in shipyards that manufacture or build ships, as well as industrial sites that perform large-scale plant construction.

10: tray 11: wheel 15: magnet
20: base plate 21: spray tunnel
30: wave block 31: supply hole 32: nozzle
35: Wave Guide 36: Cam Guide
40: workroom 41: internal 42: external
45: mouse
50: grit recovery 51: inner tube 52: outer tube
60: Lip 61: Folding groove
70: base 71: guide bush
81: motor 82: waveshaft
100: blast body 200: ground equipment

Claims (4)

It is equipped with a grit recovery unit including a vacuum pump, a supply unit for supplying a grit including an air pump for generating high pressure air, and a storage tank for storing the grit so as to support the operation while operating on the ground. Comprised of the blast body 100 and working while attaching and moving to the ground equipment 200 and the supply pipe and the recovery pipe attached to the working surface of the ground, the blast body 100 of the high pressure generated in the air pump The air is supplied to the supply hole 31 through the supply pipe together with the grit, and the nozzle 32 is sprayed to the mouse 45 of the working room 40 to perform a blasting operation and the grit recovery hole 50 connected to the vacuum pump. In constructing an air blast machine that is recovered to the ground equipment 200 through the recovery pipe,
The blast body 100 includes a tray 10 mounted with a magnet 11 generating magnetic force adjacent to the bottom surface and having wheels 11;
A base plate 20 made of an alloy mounted on the tray 10 and forming a spray tunnel 21;
The supply block 31 made of steel with high wear resistance and the nozzle 32 are integrally inserted into the base plate 20 so that the nozzle 32 is installed in the injection tunnel 21. )and;
Waving means for performing a waking operation of rotating the waving block 30 left and right;
The inner body 41 made of steel having high wear resistance such that the grit sprayed from the nozzle 32 formed on the wave block 30 below the base plate 20 is sprayed onto the working surface through the mouse 45 and the work is performed. A working chamber 40 composed of an outer body 42 made of an alloy configured to integrally surround the outer circumferential surface;
Grit recovery hole 50 consisting of an inner tube 51 made of abrasion-resistant steel and an outer tube 52 made of alloy to recover the grit which has been performed on one side of the working chamber 40 by vacuum pressure. Air blast machine characterized in that the configuration. The method of claim 1,
The wave block 30 having the nozzle 32 is provided with an arc-shaped pedestal 70 and a guide bush 71 for guiding the wave motion around the injection tunnel 21 of the base plate 20 and the wave block 30. Waves of the wave 32 integrated with the wave block 30 by integrally installing a wave guide (35) having a curved surface corresponding to the arc shape of the pedestal 70 and the guide bushing 71 at the lower end of the nozzle 32 Air blast machine, characterized in that the guide (35) is guided to the guide bushing 71 and configured to wave the left and right. The method of claim 1,
The wave means includes a wave shaft 82 that constitutes an eccentric cam at the tip of the motor 81, and a wave guide block 30 that has a cam guide 36 formed of a rectangular ring to drive the wave block. Air blast machine, characterized in that 30 is configured to rotate left and right to move. The method of claim 1,
The mouse 45 of the working room 40 is composed of rubber or silicone, but the inner circumference of the `` 60 '' lip formed an inward "c" shaped folding groove 61, characterized in that the air blast machine .

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