Separator for hydroblast water recovery equipment

Abstract

To provide a separator for a hydroblast water recovery device which can shorten a construction date of hydroblast processing.SOLUTION: A separator 1 for a hydroblast water recovery device includes a first trap 14 for separating dust from hydroblast water BW. The first trap 14 is composed of a member which has a plurality of through holes 14a for passing the hydroblast water BW and drops the separated dust from a surface 14b on the side of a first tank 11. The dust separated by the first trap 14 drops without held by the first trap 14 and therefore is accumulated in the first tank 11. After an elapse of fixed time, the dust accumulated in the first tank 11 may be removed, and exchange of the first trap 14 like filter exchange is unnecessary. Continuous operation without interrupting a step of hydroblast treatment like filter exchange is enabled.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a separator for a hydroblast water recovery system. [Background technology]

[0002] Conventionally, a separator for a hydroblasting water recovery apparatus that recovers hydroblasting water and separates dust is known, as described in Patent Document 1. This separator for a hydroblasting water recovery apparatus includes a first tank, a second tank, and a third tank that are provided in this order from the inlet side to the outlet side of the hydroblasting water. A first filter that allows the hydroblasting water to pass through and retains dust of a predetermined size is provided between the first tank and the second tank. In addition, a second filter with finer mesh than the first filter is provided between the second tank and the third tank. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-143610 A Summary of the Invention [Problem to be solved by the invention]

[0004] Here, the separator for the conventional hydroblasting water recovery device separates dust from the hydroblasting water using a filter. Such a filter periodically becomes clogged. Therefore, it is necessary to stop the separator in order to replace the filter. In this case, it is necessary to interrupt the hydroblasting process, which causes a problem of extending the number of days required for construction.

[0005] The present invention has been made to solve such problems, and aims to provide a separator for a hydroblast water recovery device that can shorten the number of days required for hydroblast treatment. [Means for solving the problem]

[0006] The separator for a hydroblasting water recovery apparatus of the present invention is a separator for a hydroblasting water recovery apparatus that recovers hydroblasting water and separates dust, and is equipped with a first tank, a second tank adjacent to the first tank on the outlet side of the hydroblasting water, and a first trap provided between the first tank and the second tank and separating dust from the hydroblasting water, the first trap having a plurality of through holes that allow the hydroblasting water to pass through and being composed of a member that allows the separated dust to fall from the surface on the first tank side.

[0007] The separator for the hydroblasting water recovery device of the present invention is provided between the first tank and the second tank and includes a first trap for separating dust from the hydroblasting water. The first trap has a plurality of through holes for passing the hydroblasting water and is composed of a member for dropping the separated dust from the surface of the first tank side. The dust separated by the first trap falls without being held by the first trap and accumulates in the first tank. Therefore, after a certain period of time, it is only necessary to remove the dust accumulated in the first tank, and it is not necessary to remove and replace the first trap as in the case of replacing a filter. In other words, continuous operation is possible without interrupting the hydroblasting process as in the case of replacing a filter. As a result, the number of days required for the hydroblasting process can be reduced.

[0008] The separator for the hydroblasting water recovery device includes a third tank adjacent to the outlet side of the hydroblasting water with respect to the second tank, and a second trap provided between the second tank and the third tank to separate dust from the hydroblasting water, and the second trap may be configured by a wall portion that separates the second tank from the third tank and has an opening at the upper end side that connects the space of the second tank to the space of the third tank. Therefore, the dust contained in the hydroblasting water that has entered the second tank is blocked by the wall portion of the second trap, and falls to the bottom side of the second tank and accumulates. Meanwhile, the supernatant liquid of the hydroblasting water separated from the dust overflows the wall portion and flows into the third tank through the opening of the second trap. Therefore, after a certain time has passed, it is only necessary to remove the dust accumulated in the second tank, and there is no need to remove and replace the second trap, as in the case of replacing a filter. That is, continuous operation is possible without interrupting the hydroblasting process, such as during filter replacement.

[0009] The first tank may be provided with a partition member on the bottom side that separates the upper and lower spaces and has a plurality of through holes formed therein, and an openable and closable dust discharge section may be formed on the side wall of the first tank above the partition member. In this case, the dust separated in the first trap is deposited on the partition member. The dust deposited on the partition member can be discharged from the dust discharge section by opening the dust discharge section.

[0010] The separator for recovering hydroblasting water of the present invention is a separator for a hydroblasting water recovery apparatus that recovers hydroblasting water and separates dust, and comprises a second tank, a third tank adjacent to the second tank on the outlet side of the hydroblasting water, and a second trap provided between the second tank and the third tank for separating dust from the hydroblasting water, and the second trap is composed of a wall portion that separates the second tank and the third tank and has an opening at the upper end side that connects the second tank and the third tank.

[0011] The separator for the hydroblasting water recovery device of the present invention is provided between the second tank and the third tank and includes a second trap for separating dust from the hydroblasting water. The second trap is configured by a wall portion that separates the second tank from the third tank and has an opening at the upper end thereof that connects the second tank to the third tank. Therefore, the dust contained in the hydroblasting water that has entered the second tank is blocked by the wall portion of the second trap, and falls to the bottom side of the second tank and accumulates there. Meanwhile, the supernatant liquid of the hydroblasting water separated from the dust flows over the wall portion and into the third tank through the opening of the second trap. Therefore, after a certain time has passed, it is only necessary to remove the dust accumulated in the second tank, and it is not necessary to remove and replace the second trap as in the case of replacing a filter. In other words, continuous operation is possible without interrupting the hydroblasting process, as is the case when replacing a filter. As a result, the number of days required for hydroblasting can be reduced. Effect of the Invention

[0012] According to the present invention, a separator for a hydroblast water recovery system can be provided, which can shorten the number of days required for hydroblasting treatment. [Brief description of the drawings]

[0013] [Figure 1] 1 is a schematic diagram showing a hydroblasting water recovery device including a separator according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic cross-sectional view showing the internal configuration of the separator shown in FIG. [Diagram 3] FIG. 4 is a schematic cross-sectional view showing an internal configuration of a separator according to a comparative example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a preferred embodiment of a separator for a hydroblast water recovery apparatus of the present invention will be described with reference to the drawings.

[0015] FIG. 1 is a schematic diagram showing a hydroblasting water recovery device 100 including a separator 1 according to an embodiment of the present invention. The hydroblasting water recovery device 100 is a device for recovering hydroblasting water BW generated by the blasting of a hydroblasting machine 110. The hydroblasting machine 110 is mounted on a steel plate PL to be blasted and can travel on the steel plate PL. The hydroblasting machine 110 is provided with a jet gun 111 for spraying high-pressure water toward the surface of the steel plate PL at the center of the body, and a skirt 112 attached to the machine body so as to surround the jet gun 111. The skirt 112 forms a space (blasting section) surrounded by the surface of the steel plate PL. The hydroblasting water recovery device 100 is provided for the hydroblasting machine 110. The hydroblasting water recovery device 100 includes a vacuum hose 2, a vacuum device 3, and a separator 1.

[0016] The vacuum hose 2 is a hose that sucks up the hydroblast water BW generated by the hydroblast machine 110. One end of the vacuum hose 2 is connected to a blast section surrounded by a skirt 112 of the hydroblast machine 110. The other end of the vacuum hose 2 is connected to a vacuum device 3. A separator 1 is provided at a midpoint of the vacuum hose 2. Note that the portion of the vacuum hose 2 between the separator 1 and the hydroblast machine 110 may be referred to as an upstream hose portion 2a, and the portion between the separator 1 and the vacuum device 3 may be referred to as a downstream hose portion 2b.

[0017] The vacuum device 3 is a device that sucks the hydroblasting water BW from the hydroblasting machine 110 via the vacuum hose 2. The vacuum device 3 sucks the hydroblasting water BW by vacuuming the blasting part of the hydroblasting machine 110.

[0018] The separator 1 is a device that collects hydroblasting water BW and separates dust. The hydroblasting water BW flows into the separator 1 from the hydroblasting machine 110 through the upstream hose section 2a of the vacuum hose 2. The hydroblasting water BW contains dust particles of various sizes generated by the abrasive cleaning. Therefore, the separator 1 causes the hydroblasting water BW from which the dust and air have been separated to flow out to the vacuum device 3 through the downstream hose section 2b of the vacuum hose 2.

[0019] Next, the detailed configuration of the separator 1 will be described with reference to FIG. 2. FIG. 2 is a schematic cross-sectional view showing the internal configuration of the separator 1. The separator 1 is configured by a tank capable of storing the hydroblast water BW therein. The separator 1 includes a first tank 11, a second tank 12, a third tank 13, a first trap 14, and a second trap 16. The side to which the hydroblast water BW is supplied from the hydroblast machine 110 may be referred to as the "inlet side", and the side from which the hydroblast water BW flows out to the vacuum device 3 may be referred to as the "outlet side". In FIG. 2, the right side of the paper corresponds to the inlet side, and the left side of the paper corresponds to the outlet side. In the following description, the front-to-back direction of the paper may be referred to as the "width direction".

[0020] The first tank 11 is the tank located closest to the inlet of the hydroblasting water BW in the separator 1. The second tank 12 is the tank adjacent to the first tank 11 on the outlet side of the hydroblasting water BW. A first trap 14 is provided between the first tank 11 and the second tank 12. The third tank 13 is the tank adjacent to the second tank 12 on the outlet side of the hydroblasting water BW. A second trap 16 is provided between the second tank 12 and the third tank 13. The third tank 13 is the tank located closest to the outlet side of the hydroblasting water BW in the separator 1.

[0021] Specifically, the first tank 11 is a space defined by a ceiling wall 21, a side wall 22, a bottom wall 23, the first trap 14, and a pair of side walls (not shown) that face each other in the width direction. The side wall 22 is a wall that faces the first trap 14 on the inlet side. The bottom wall 23 slopes downward from the lower end of the side wall 22 toward the lower end of the first trap 14. The second tank 12 is a space defined by the ceiling wall 21, the bottom wall 24, the first trap 14, the second trap 16, and a pair of side walls (not shown) that face each other in the width direction. The ceiling wall 21 of the second tank 12 is a wall that is continuous with the ceiling wall 21 of the first tank 11. The third tank 13 is a space defined by a ceiling wall 21, a side wall 26, a bottom wall 24, the second trap 16, and a pair of side walls (not shown) facing each other in the width direction. The side wall 26 is a wall facing the second trap 16 on the inlet side. The ceiling wall 21 is a wall continuing from the ceiling wall 21 of the second tank 12. The bottom wall 24 is a wall continuing from the bottom wall 24 of the second tank 12.

[0022] The ceiling wall 21 of the first tank 11 is provided with an inlet nozzle 31 for introducing the hydroblast water BW. The ceiling wall 21 of the third tank 13 is provided with an outlet nozzle 32 for discharging the hydroblast water BW. The outlet nozzle 32 is provided with a vacuum pressure regulating valve 32a. This vacuum pressure regulating valve 32a adjusts the vacuum pressure in the chamber to control the vacuum pressure of the blasting section of the hydroblasting machine 110. The side wall 26 of the third tank 13 is provided with a discharge pump 33 for discharging the hydroblast water BW stored in the third tank 13. The side wall on one side (the back side of the paper) in the width direction of the second tank 12 is provided with a dust discharge section 37 for discharging dust accumulated in the second tank 12. Similarly, a dust discharge portion 38 for discharging dust accumulated in the third tank 13 is provided on one side wall portion in the width direction of the third tank 13.

[0023] The first tank 11 is provided with a partition member 34 that divides the upper and lower spaces at the bottom side and has a plurality of through holes 34a formed therein. The partition member 34 extends horizontally from the lower end of the side wall portion 22 toward the outlet side. The partition member 34 has an opening / closing portion 35 that opens and closes via a hinge 35a. When dust that has passed through the partition member 34 and accumulated on the bottom wall portion 23 is to be removed, the opening / closing portion 35 is opened. In addition, the side wall portion 22 of the first tank 11 is provided with an openable / closable dust discharge portion 36 formed above the partition member 34. The dust discharge portion 36 is provided at a height position where dust accumulated on the partition member 34 can be removed without passing through the through holes 34a of the partition member 34.

[0024] The first trap 14 is provided between the first tank 11 and the second tank 12, and separates dust from the hydroblasting water BW. The first trap 14 extends from the bottom wall 23 to the ceiling wall 21, and extends between a pair of side walls facing each other in the width direction. The first trap 14 has a plurality of through holes 14a through which the hydroblasting water BW passes, and is composed of a member that allows the separated dust to fall from the surface 14b on the first tank 11 side. The first trap 14 can mainly filter large sand, lumps of paint, etc. The first trap 14 removes dust contained in the hydroblasting water BW that flows into the first tank 11 from the inlet side nozzle 31 and is stored in the first tank 11 when the hydroblasting water BW flows into the second tank 12 by being sucked into the outlet side.

[0025] An example of a member constituting the first trap 14 is a punched metal having a number of through holes 14a formed in a metal plate. The surface 14b of the punched metal on the side of the first tank 11 other than the through holes 14a is a smooth plane. Therefore, the dust separated from the hydroblast water BW does not remain on the surface 14b of the first trap 14, but falls to the bottom side. The fallen dust is deposited on the partition member 34. The member constituting the first trap 14 is not limited to the punched metal, and may be a resin plate member having a number of through holes, or a member having through holes formed by weaving wire material, such as a wire mesh. The surface 14b of the wire mesh is not a smooth plane like the punched metal, but unlike a filter, dust is difficult to capture in the wire material woven in a rough state, and falls from the surface 14b after being separated from the hydroblast water BW. A filter made of a fibrous material as a surface material has the property of capturing the separated dust and holding it so that it does not fall. Therefore, the members constituting the first trap 14 do not include a filter.

[0026] The second trap 16 is provided between the second tank 12 and the third tank 13, and separates dust from the hydroblasting water BW. The second trap 16 mainly separates fine particles smaller in diameter than the dust separated in the first trap 14. The second trap 16 is composed of a wall 41 that separates the second tank 12 from the third tank 13 and has an opening OP that connects the space of the second tank 12 to the space of the third tank 13 at the upper end. The wall 41 blocks the flow of dust from the second tank 12 to the third tank 13. The blocked dust settles to the bottom side of the second tank 12, while the supernatant liquid UW of the hydroblasting water BW separated from the dust overflows the upper end of the wall 41 and flows into the third tank 13 through the opening OP.

[0027] The size of the opening OP is not particularly limited, as long as the dust can be sufficiently blocked by the wall 41 and the supernatant liquid UW can be satisfactorily overflowed. The opening OP is formed between the upper end of the wall 41 and the ceiling wall 21, and spreads over the entire width. The area of ​​the opening OP may be approximately equal to the cross-sectional area of ​​the outlet-side nozzle 32. This allows the amount of air passing through the opening OP and the amount of air sucked by the outlet-side nozzle 32 to be balanced. The third tank 13 is provided with a baffle plate 42 extending downward from the ceiling wall 21. The baffle plate 42 faces the opening OP at a position spaced away from the opening OP toward the outlet side. This makes it possible to suppress the air flow formed by the suction of the outlet-side nozzle 32 from directly acting on the opening OP. Therefore, it is possible to suppress the overflowing supernatant liquid UW from being sucked into the outlet-side nozzle 32.

[0028] The hydroblasting water BW that overflows from the wall 41 of the second trap 16 is stored in the third tank 13. At this time, dust remaining in the hydroblasting water BW settles on the bottom side of the third tank 13. When the hydroblasting water BW in the third tank 13 reaches a predetermined amount, the discharge pump 33 discharges the hydroblasting water BW in the third tank 13 to the outside.

[0029] Next, the action and effect of the separator 1 according to this embodiment will be described.

[0030] First, a separator 200 according to a comparative example will be described with reference to Fig. 3. In the separator 200, a first filter 51 that allows hydroblasting water to pass through and retains dust of a predetermined size is provided between the first tank 11 and the second tank 12. In addition, a second filter 52 with finer mesh than the first filter 51 is provided between the second tank 12 and the third tank 13.

[0031] The separator 200 according to this comparative example separates dust from the hydroblasting water BW using filters 51 and 52. Such filters 51 and 52 periodically become clogged due to dust remaining in the filters. Therefore, the separator 200 needs to be stopped in order to replace the filters 51 and 52. In this case, the hydroblasting process needs to be interrupted, which increases the number of days required for construction.

[0032] In contrast, the separator 1 for the hydroblast water recovery device according to this embodiment is provided between the first tank 11 and the second tank 12 and includes a first trap 14 for separating dust from the hydroblast water BW. The first trap 14 has a plurality of through holes 14a for passing the hydroblast water BW, and is composed of a member for dropping the separated dust from the surface 14b on the first tank 11 side. The dust separated by the first trap 14 falls without being held by the first trap 14, and accumulates in the first tank 11. Therefore, after a certain period of time, it is sufficient to remove the dust accumulated in the first tank 11, and it is not necessary to remove and replace the first trap 14 as in the case of replacing a filter. In other words, continuous operation is possible without interrupting the hydroblast process as in the case of replacing a filter. As a result, the number of days required for the hydroblast process can be shortened. In addition, it is also possible to reduce waiting time at the site.

[0033] The separator 1 for the hydroblast water recovery device includes a third tank 13 adjacent to the outlet side of the hydroblast water BW with respect to the second tank 12, and a second trap 16 provided between the second tank 12 and the third tank 13 to separate dust from the hydroblast water BW. The second trap 16 may be configured by a wall portion 41 that separates the second tank 12 and the third tank 13 and has an opening OP that connects the space of the second tank 12 to the space of the third tank 13 at the upper end side. Therefore, the dust contained in the hydroblast water BW that has entered the second tank 12 is blocked by the wall portion 41 of the second trap 16, and falls to the bottom side of the second tank 12 and accumulates there. Meanwhile, the supernatant liquid UW of the hydroblasting water BW separated from the dust flows over the wall 41 and into the third tank 13 through the opening OP of the second trap 16. Therefore, after a certain time has passed, it is only necessary to remove the dust accumulated in the second tank 12, and there is no need to remove and replace the second trap 16 as in the case of replacing a filter. In other words, continuous operation is possible without interrupting the hydroblasting process, as is the case when replacing a filter.

[0034] The trap order is preferably such that the first trap 14 made of a member having a through hole 14a is disposed on the upstream side, and the second trap 16 made of a wall portion 41 is disposed on the downstream side. That is, when dust is separated between the first tank 11 and the second tank 12 using the wall portion 41, dust with a large particle size may ride the flow and overflow as it is, and dust may not be separated sufficiently. Also, when dust is separated between the second tank 12 and the third tank 13 using a punching metal or the like, fine particles with a small particle size may not be separated well, and it may be difficult to make the through hole 14a excessively small in order to separate them. On the other hand, with the order as in this embodiment, dust with a large particle size can be separated using the punching metal or the like, and the wall portion 41 can well block and separate the dust with a small particle size.

[0035] The first tank 11 is provided with a partition member 34 that divides the upper and lower spaces at the bottom and has a plurality of through holes 34a formed therein, and an openable and closable dust discharge section 36 is formed on the side wall 22 of the first tank 11 above the partition member 34. In this case, the dust separated in the first trap 14 accumulates on the partition member 34. The dust accumulated on the partition member 34 can be discharged from the dust discharge section 36 by opening the dust discharge section 36.

[0036] The present invention is not limited to the above-described embodiments.

[0037] For example, the separator does not need to have both the first trap 14 and the second trap 16, and one of the traps may be configured as a filter. Even in such a case, the time required for filter replacement can be shortened compared to the separator 200 according to the comparative example that uses two filters, and therefore the effect of shortening the construction period can be obtained.

[0038] Furthermore, the partition member 34 provided on the bottom side of the first tank 11 may be omitted. [Explanation of symbols]

[0039] 1...separator, 11...first tank, 12...second tank, 13...third tank, 14...first trap, 16...second trap, 34...partition member, 36...dust discharge section, 41...wall section, 100...hydroblast water recovery device, OP...opening section.

Claims

1. A separator for a hydroblast water recovery device that recovers hydroblast water and separates dust, A first tank; A second tank adjacent to the first tank on the outlet side of the hydroblast water; a first trap disposed between the first tank and the second tank for separating the dust from the hydroblast water; The first trap is configured by a member having a plurality of through holes through which the hydroblast water passes and which causes the separated dust to fall from a surface on the first tank side; a third tank adjacent to the second tank on the outlet side of the hydroblast water; a second trap disposed between the second tank and the third tank for separating the dust from the hydroblast water; the second trap is configured by a wall portion that separates the second tank from the third tank and has an opening at an upper end side that connects a space of the second tank to a space of the third tank; The wall portion blocks the flow of the dust from the second tank to the third tank, causing the blocked dust to fall to the bottom side of the second tank, while the supernatant liquid of the hydroblasting water separated from the dust flows over the wall portion at the opening. A separator for a hydroblasting water recovery apparatus.

2. The first tank is provided with a partition member on the bottom side thereof, the partition member dividing the upper and lower spaces and having a plurality of through holes formed therein; The separator for a hydroblast water recovery apparatus according to claim 1 , wherein a dust discharge portion that can be opened and closed is formed on the side wall portion of the first tank above the partition member.

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