JP2015006673A - Foreign matter removal jig for water suction hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for a water suction hose, capable of suppressing or preventing a foreign matter from approaching to a strainer arranged at a tip end of the water suction hose for sucking water, or capable of removing the foreign matter deposited on the strainer.SOLUTION: A foreign matter removal jig 7 for a water suction hose is provided with filter means at a suction port side of the water suction hose connected to a suction port of a pump, and for spreading the pressurized-water pressurized by the pump to an outer surface side of the filter means. The filter means is provided to cover an outer surface of the water suction hose. The jig includes: a container arranged at either one end side at the outer surface side of the filter means and in an axial direction of the filter means and where the pressurized-water is supplied from the pump; and a plurality of through holes 10 formed on a wall surface of the container along the outer surface of the filter means to eject the pressurized-water to a filter means side, where a bus line of an internal wall surface of the through hole 10 is formed to intersect with a bus line of an internal wall surface of a through hole adjacent to the through hole.

Description

  The present invention relates to a jig that is attached to a water absorption hose provided with a filtration device that prevents foreign matter from being mixed into the sucked water when the stored water is inhaled, and in particular, removes foreign matter adhering to the filtration device. Alternatively, the present invention relates to a foreign matter removing jig for a water absorption hose that discharges water so as to suppress or prevent foreign matter from adhering to a filtration device.

  The water absorption hose configured to inhale the water stored in a pond and radiate the inhaled water to the target object, because foreign matter such as dead leaves and garbage accumulates in the pond. There is a possibility that foreign matter is sucked in at the same time as the water to be sucked and the pump or the like breaks down. Therefore, in order to remove foreign matters mixed in the sucked water, a filter device such as a filter or a strainer is provided in the water absorbing portion for sucking water.

  On the other hand, when water is absorbed, the pressure in the vicinity of the filtration device becomes negative pressure, so that foreign matter adheres to the surface of the filtration device or the filtration device is clogged, resulting in an excessive load on the pump and failure of the pump. Or the durability of the pump may be reduced.

  Patent Document 1 and Patent Document 2 describe an apparatus configured to remove foreign matter attached to a filter or prevent foreign matter from attaching. The apparatus described in Patent Literature 1 is configured to suppress or prevent foreign matter from adhering to a filter provided in an opening of a hose that is immersed in a reservoir and sucks water in the reservoir. The configuration of the apparatus will be described in detail. A pipe for sending water sucked through the filter from the opening of the hose to the object is branched, and the opening of the branched flow path is located above the filter or By being arranged below, the water is discharged to the front surface of the filter. In other words, the opening of the branched flow path is arranged so that the flow direction of water discharged from the branched flow path is perpendicular to the flow direction of water sucked into the filter. Therefore, water is discharged from the branched flow path so that the foreign matter attached to the filter is peeled off, or before the foreign matter floating in the vicinity of the filter is attached to the filter so as to be removed from the water flow sucked into the filter. . As a result, the clogging of the filter can be suppressed or prevented.

  The device described in Patent Document 2 is configured to suck water from the pond, mix air into the sucked water, and then return the water to the pond again. A cylindrical filter is provided in the suction portion. Therefore, when the apparatus described in Patent Document 2 once sucks water, the load on the pump increases because the algae floating in the pond adhere to the surface of the filter, or the amount of sucked water decreases. Therefore, foreign substances adhering to the surface of the filter are removed according to the suction pressure and the flow rate of the sucked water. The configuration of the apparatus will be specifically described. A plurality of nozzles, more specifically four nozzles, are provided on the outer surface side of the filter so that water is discharged along the axial direction of the filter. When removing, it is comprised so that water may be discharged from the nozzle. Also, a plurality of valves are provided in the flow path between the suction part and the pump and between the discharge part and the pump, and when the water in the pond is sucked and mixed with air, that is, in the normal operation And when removing the foreign material adhering to the filter, the flow path through which water flows is selectively switched by each valve. Therefore, when the filter is clogged, the device described in Patent Document 2 stops suctioning water once and discharges water from the nozzle toward the outer surface of the filter. Foreign matter adhering to the surface can be removed.

Special table 2009-514670 JP 2000-24421 A

  Although the apparatus described in each patent document mentioned above can remove the foreign material adhering to a filter by discharging water to the vicinity of a filter, or can suppress that a foreign material adheres to a filter. Since water discharged near the filter is discharged along the axial direction of the discharge portion, even when a plurality of discharge portions are provided, the water is positioned between the discharge portions in the circumferential direction. There is a possibility that no water flow is generated on the outer surface or the surface of the filter in order to remove foreign substances or to suppress the adhesion of foreign substances.

  This invention was made against the background described above, and suppresses or prevents foreign matter from approaching the filtration device provided at the tip of a water absorption hose that sucks water, or foreign matter attached to the filtration device. An object of the present invention is to provide a foreign matter removing jig for a water absorption hose that can remove water.

  In order to achieve the above object, according to the first aspect of the present invention, a filtering means is provided on the suction port side of the water absorption hose connected to the suction port of the pump, and the pump is added to the outer surface side of the filtering means. In the foreign matter removing jig for a water absorption hose for spraying pressurized pressurized water, the filtering means is provided so as to cover the outer surface of the water absorbing hose, and is on the outer surface side of the filtering means and in the axial direction of the filtering means. A container that is provided on either one end side and that is supplied with pressurized water from the pump, and is formed on the wall surface of the container along the outer surface of the filtering means, and discharges the pressurized water to the filtering means side. The through-hole of the inner wall surface of the said through-hole and the bus-bar of the inner wall surface of the through-hole adjacent to this through-hole are formed so that it may cross | intersect.

  The invention of claim 2 is provided with a filtering means on the suction port side of a water absorption hose connected to the suction port of the pump, and a water absorption hose that sprays pressurized water pressurized by the pump on the outer surface side of the filtration means. In the foreign matter removing jig, the filtering means is provided so as to cover an outer surface of the water absorption hose, and is provided on the outer surface side of the filtering means and on one end side in the axial direction of the filtering means. A plurality of containers formed by penetrating the container so as to discharge the pressurized water to the filtration means side, and arranged in an annular shape along the outer surface of the filtration means. Each of the plurality of through holes is formed to be inclined in the same direction along a circumferential direction in which the plurality of through holes are arranged.

  According to a third aspect of the present invention, there is provided a water absorption hose in which filtering means is provided on the suction port side of the water absorption hose connected to the suction port of the pump, and the pressurized water pressurized by the pump is sprayed on the outer surface side of the filtration means. In the foreign matter removing jig, the filtering means is provided so as to cover an outer surface of the water absorption hose, and is provided on the outer surface side of the filtering means and on one end side in the axial direction of the filtering means. A container to which pressurized water is supplied from the pump, and a plurality of through holes formed on the wall surface of the container along the outer surface of the filtering means, and discharging the pressurized water to the filtering means side, The opening area on the filtration means side in the hole is formed smaller than the opening area on the inner side of the container.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the through hole has an opening on the filtering means side facing an outer surface side of the filtering means from the opening on the container side. A foreign matter removing jig for a water absorption hose, comprising: a formed first through hole; and a second through hole formed at a position away from the outer surface of the filtering means from the first through hole. .

  According to the present invention, the filtering means is provided on the suction port side of the water absorption hose connected to the suction port of the pump, and the pressurized water pressurized by the pump is sprayed on the outer surface side of the filtering means. The foreign matter adhering to the outer surface of the filter can be removed, or it is possible to suppress or prevent the foreign matter from being attracted and approached to the outer surface of the filtering means. Further, the filtering means is provided so as to cover the outer surface of the water absorption hose, and a container in which pressurized water is supplied from the pump to the outer surface side of the filtering means and to either one end side in the axial direction of the filtering means. And a plurality of through holes for discharging pressurized water to the filtering means side are formed in the wall surface of the container along the outer surface of the filtering means, so that pressurized water is supplied from the plurality of through holes to the outer surface side of the filtering means. By discharging, the foreign matter adhering to the outer surface of the filtering means can be removed, or the approaching and approaching of the foreign matter to the outer surface of the filtering means can be suppressed or prevented.

  According to the invention of claim 1, the bus bar on the inner wall surface of the through hole and the bus bar on the inner wall surface of the through hole adjacent to the through hole are formed so as to intersect with each other. A film of pressurized water discharged from each through hole can be formed so as to surround the surface without a gap. Therefore, it can suppress or prevent that a foreign material approaches from the outer peripheral side of a filtration apparatus more reliably, or can remove the foreign material adhering to the outer peripheral surface of a filtration apparatus.

  Furthermore, according to the invention of claim 2, the through holes are arranged in an annular shape, and each through hole is formed to be inclined in the same direction along the circumferential direction in which the plurality of through holes are arranged. Therefore, the water flow generated by the pressurized water discharged from each through-hole is spiral, and as a result, the water flow can be generated so as to surround the outer periphery of the filtering means without any gap, as in the first aspect of the invention. . Therefore, it is possible to more reliably suppress or prevent the foreign matter from approaching from the outer peripheral side of the filtering means, or to remove the foreign matter attached to the outer peripheral surface of the filtering means.

  According to the invention of claim 3, since the opening area on the filtration means side in the through hole is formed smaller than the opening area on the inner side of the container, the flow rate of water discharged from the through hole is increased. Can do. As a result, when a large amount of foreign matter is accumulated or floating, it is possible to more effectively suppress or prevent the foreign matter from approaching the filtering device. Further, by increasing the water flow, there is a possibility that a flow in the same direction as the water flow discharged to the water staying between the through holes in the circumferential direction due to the water flow is generated. Similarly to the first and second aspects, the water flow can be generated so as to surround the outer periphery of the filtering means without any gap. Therefore, it is possible to more reliably suppress or prevent the foreign matter from approaching from the outer peripheral side of the filtering device means, or to remove the foreign matter attached to the outer peripheral surface of the filtering means.

  According to the invention of claim 4, the through hole is formed by the first through hole formed such that the opening on the filtering means side faces the filtering means side from the opening on the container side, and the first through hole. Including a second through hole formed at a position away from the outer surface of the filtering means, so that foreign matter attached to the outer peripheral surface of the filtering means is removed by the water flow generated by the pressurized water discharged from the first through hole, and It is possible to suppress or prevent foreign matter from approaching the filtering means due to the water flow generated by the pressurized water discharged from the second through hole.

It is a figure which shows an example of the shape of the through-hole formed in the water shower jig. It is a figure which shows the state which the fire fighting pump automobile is absorbing water from fire fighting water. It is a figure for demonstrating the internal condition of firefighting water supply. It is a schematic diagram which shows the state of the water flow which generate | occur | produced with the water discharged from the water shower jig. It is a figure for demonstrating the structure of a water shower jig, (a) is sectional drawing, (b) is a bottom view. It is a figure which shows the state by which the water absorption hose and the water discharge hose are connected with the pump. It is a figure for demonstrating the usage method of a water shower jig, and its effect | action. It is a perspective view for demonstrating the other structure which attaches a water absorption hose. It is a figure which shows the other example of the shape of the through-hole formed in the water shower jig. It is a figure for demonstrating the example in which the through-hole was inclined and formed in the water shower jig. It is a figure which shows an example of the shape of the through-hole for increasing the flow rate of the water discharged from a water shower jig.

  Next, an example of the configuration of the foreign matter removing jig for a water absorption hose according to the present invention will be described. FIG. 2 shows a state in which the fire-fighting pump vehicle 1 absorbs water from the fire-fighting water supply 2. The fire pump vehicle 1 shown in FIG. 2 pumps up water by immersing a water absorption hose 3 in fire water 2 such as a pond or a river by a pump mounted on the fire pump vehicle 1, and discharges the pumped water to a water discharge hose 4. The water is discharged from the fire and extinguished. Therefore, as shown in FIG. 3, if foreign matter 5 such as dead leaves or garbage is accumulated on the firefighting water supply 2, the foreign matter 5 may be sucked simultaneously with water absorption, and the pump may break down. 3 is provided with a strainer 6 for preventing foreign matter 5 from being sucked simultaneously with water absorption, that is, for filtering water to be treated. On the other hand, since the negative pressure is generated in the vicinity of the strainer 6 due to water absorption, the foreign matter 5 may adhere to the surface of the strainer 6 and the pump pressure may decrease or the water absorption amount may decrease. . Therefore, the foreign matter removing jig for a water absorption hose according to the present invention is configured to remove the foreign matter 5 attached to the strainer 6 or to suppress or prevent the foreign matter 5 from approaching the strainer 6. .

  FIG. 4 is a view for explaining the structure of the foreign matter removing jig for a water absorption hose according to the present invention. A strainer 6 is provided so as to cover the tip of the water absorption hose 3 immersed in the firefighting water supply 2, A water shower jig 7 that discharges water so that a water pressure film is formed on the outer peripheral surface of the strainer 6 is formed integrally with the tip of the water absorption hose 3. The water shower jig 7 shown in the drawing corresponds to the foreign matter removing jig for a water absorption hose in the present invention. Therefore, by discharging pressurized water from the water shower jig 7, it is possible to suppress or prevent the foreign matter 5 in the vicinity of the strainer 6 from approaching the strainer 6 due to water pressure.

  FIG. 5 is a view for explaining the configuration of the water shower jig 7. The water shower jig 7 shown in FIG. 5 is disposed so as to surround the outer periphery of the upper end portion of the strainer 6. The water shower jig 7 includes a cylindrical attachment portion 8, an annular flow passage 9 formed on the outer periphery on the lower end side of the attachment portion 8, and a circular shape below the annular flow passage 9. A plurality of through holes 10 arranged in the direction and formed through the bottom surface of the annular channel.

  Here, the structure of the attachment part 8 is demonstrated concretely. In the example shown in FIG. 5, a strainer fastener 11 for attaching the upper portion of the strainer 6 and the water absorption hose 3 is provided so as to be fitted above the attachment portion 8 of the water shower jig 7. That is, the upper portion of the strainer fastener 11 is formed in a tapered shape, and the upper portion of the attachment portion 8 is formed so that the tapered portion is fitted. Specifically, the opening 8a on the lower side of the mounting portion 8 is formed larger than the outer diameter of the strainer 6, the opening 8b on the upper side of the mounting portion 8 is larger than the outer diameter of the water absorption hose 3, and the strainer fastener 11 Is formed smaller than the portion of the maximum outer diameter. Further, the upper portion of the attachment portion 8 is formed in a tapered shape so that the water shower jig 7 is lowered from the upper side of the water absorption hose 3 and fitted to the strainer fastener 11.

  An annular channel 9 is formed on the outer peripheral surface on the lower side of the attachment portion 8. That is, the case 12 formed in an annular shape on the outer peripheral side below the attachment portion 8 is integrally formed, and the inside of the case 12 is formed as an annular space, so that the first water discharge hose 13 described later is supplied. A flow path 9 in which water flows in an annular shape is formed. A plurality of through holes 10 are formed in the circumferential direction on the lower side of the annular flow path 9 as shown in FIG. That is, the through hole 10 is formed so that the water flow generated by the water discharged from the through hole 10 or sprayed surrounds the outer peripheral surface of the strainer 6. In the example shown in FIG. 5B, the through holes 10 are formed so as to be arranged at a constant interval in the circumferential direction, but the interval between the through holes 10 may not be constant. Alternatively, they may not be formed on the same circumference. That is, the foreign matter removing jig for a water absorption hose according to the present invention may be configured so that water is discharged so as to surround the outer peripheral surface of the strainer 6, and water is discharged or dispersed in a so-called shower shape. That's fine.

  Next, a configuration for attaching the water shower jig 7 and the water absorption hose 3 will be described. In the example shown in FIG. 5, the female screw portion 14 is formed on the upper side of the case 12 formed in an annular shape. Specifically, an opening 12 a that opens upward is formed in a part of the case 12 in the circumferential direction, and a cylindrical female screw portion 14 that communicates with the opening 12 a is formed integrally with the upper surface of the case 12. ing. Further, the female member 15a of the hose connection fitting 15 is screwed to the female screw portion 14, and the female member 15a of the hose connection fitting 15 and the male member 15b of the hose connection fitting 15 are fitted or engaged. . Note that the upper end portion of the male member 15 b of the hose connection fitting 15 is formed integrally with the distal end portion of the first water discharge hose 13. Therefore, the first water discharge hose 13 and the water shower jig 7 are communicated with each other via the hose connection fitting 15 and the female screw portion 14, and water is supplied from the first water discharge hose 13 to the annular flow path 9. It is configured as follows.

  In addition, as shown in FIG. 6, the other tip of the first water discharge hose 13 is connected to the fire pump vehicle 1 so that pressurized water sucked into the fire pump vehicle 1 and pressurized is output to the first water discharge hose 13. It is configured. Specifically, the fire pump car 1 includes a port to which the water absorption hose 3 is connected, a port to which the first water discharge hose 13 for outputting pressurized water to the water shower jig 7 is connected, and water discharge to extinguish the fire. A port to which a water discharge hose 4 (hereinafter referred to as a second water discharge hose 4) is connected is formed, and a part of the pressurized water sucked and pressurized by the fire pump vehicle 1 is the first. It outputs to the water discharge hose 13, and it is comprised so that another pressurized water may be output to the 2nd water discharge hose 4. FIG.

  Next, a method of using the water shower jig 7 shown in FIG. 5 and the operation of the water shower jig 7 will be described with reference to FIG. First, the water shower jig 7 is attached to the water absorption hose 3 to which the strainer 6 is attached. That is, the attachment portion 8 and the strainer clasp 11 are fitted or engaged to connect the water absorption hose 3 and the water shower jig 7. Next, the first water discharge hose 13 is connected to the water shower jig 7 by connecting the hose connection fitting 15. Note that the water shower jig 7 and the first water discharge hose 13 may be connected before the water shower jig 7 and the water absorption hose 3 are attached. Next, the water absorption hose 3, the first water discharge hose 13, and the water shower jig 7 are simultaneously put into the fire fighting water supply 2.

  And the water absorption hose 3 begins to suck up water by raising the water discharge pressure with the pump in the firefighting pump automobile 1. Therefore, the water sucked up by the first water discharge hose 13 and the second water discharge hose 4 is output. As a result, water is supplied from the first water discharge hose 13 to the annular flow path 9 in the water shower jig 7 and the water pressure is increased. Begins to take. When the water pressure applied to the annular flow path 9 becomes equal to or higher than the water pressure in the firefighting water supply 2, water is discharged from the through hole 10 in a shower shape so as to surround the outer peripheral surface of the strainer 6. As a result, the foreign matter 5 attached to the strainer 6 can be removed, and the foreign matter 5 deposited or floating near the strainer 6 can be suppressed or prevented from approaching the strainer 6.

  In addition, the structure which attaches the water shower jig 7 and the water absorption hose 3 is not restricted to what was mentioned above, In short, it should just prevent that the water shower jig 7 moves by the water pressure discharged from the water absorption hose 3. . FIG. 8 shows another configuration for attaching the water shower jig 7 and the water absorption hose 3. The water shower jig 7 shown in FIG. 8 has an arcuate upper portion corresponding to the attachment portion 8 shown in FIG. 5. In other words, the upper portion of the mounting portion 8 shown in FIG. 5 is partially removed. A hinge (not shown) is provided at the end of the arcuate wall 8a in the circumferential direction, and a movable piece 8b formed in an arc is connected to the hinge. In other words, the movable piece 8b is connected to the wall portion 8a so as to be rotatable by the hinge. Further, a fixing member 16 capable of fixing and releasing the movable piece 8b and the wall portion 8a is provided at the end of the movable piece 8b and the wall portion 8a opposite to the end connected to the hinge. It has been.

  Therefore, the water shower jig 7 shown in FIG. 8 releases the movable piece 8b and the wall portion 8a and rotates the movable piece 8b away from the wall portion 8a. Even when the strainer 6 formed larger than the outer diameter of the water absorption hose 3 is connected, the water shower treatment can be performed. The tool 7 can be attached to the water absorption hose 3. The movable piece 8b and the wall portion 8a are fixed to the fixed member 16 so that the water shower jig 7 and the water absorption hose 3 can be fixed simultaneously with the movable piece 8b and the wall portion 8a. It is preferable that the outer diameter of the opening formed by the movable piece 8 b and the wall portion 8 a in the state fixed by 16 is slightly smaller than the outer diameter of the water absorption hose 3.

  Further, even between the through holes 10 in the circumferential direction of the water shower jig 7, the water pressure for suppressing or preventing the foreign matter 5 from approaching is configured to act. FIG. 1 is a diagram for explaining the configuration. As shown in FIG. 1, the through holes 10 are formed at equal intervals in the circumferential direction at the ends of the water shower jig 7. Moreover, each through-hole 10 is formed in the taper shape, and it is formed so that the bus-line of the inner wall face of adjacent through-holes 10 and 10 may cross | intersect. Furthermore, the opening area on the discharge side of the through-hole 10 is formed to be larger than the opening area on the upper side of the water shower jig 7, that is, on the side of the channel 9 formed in an annular shape.

  As shown in FIG. 1, by forming the through holes 10, the water discharged from each through hole 10 is flowing through the through holes 10, and the pressure on the inner wall surface side is the pressure on the axis of the through holes. Since it becomes lower, it spreads in a taper shape along the inner wall surface of the through-hole 10. Therefore, since the water flows generated by the water discharged from the adjacent through holes 10 overlap, it is possible to generate a water flow without a gap in the circumferential direction so as to surround the outer periphery of the strainer 6, and as a result, the foreign matter 5 is circular. It is possible to suppress or prevent the strainer 6 from approaching or adhering from a location where the through hole 10 in the circumferential direction is not formed.

  FIG. 9 shows another example of the shape of the through hole 10 shown in FIG. 1. Each opening of the through hole 10 is formed in an elliptical shape, and the long axis of the opening is the water shower jig 7. It is arrange | positioned along the circumferential direction. Further, the through holes 10 shown in FIG. 9 are formed at equal intervals in the circumferential direction at the ends of the water shower jig 7. Furthermore, the length in the circumferential direction of the opening on the discharge side is formed to be longer than the length of the opening on the annular flow path 9 side. That is, the through-hole 10 is formed so that the length of the major axis gradually increases from the annular flow path 9 side to the discharge side, and the buses on the inner wall surfaces of the adjacent through-holes 10 and 10 intersect each other. Is formed. Therefore, by forming the through holes 10 as shown in FIG. 9, the water discharged from each through hole 10 is discharged while spreading as in the case of the through holes 10 shown in FIG. 1. Since the water flows generated by the water discharged from 10 overlap each other, it is possible to generate a water flow without any gap in the circumferential direction so as to surround the outer periphery of the strainer 6, and as a result, the foreign material 5 can pass through the through-hole 10 in the circumferential direction. It is possible to suppress or prevent the strainer 6 from approaching or adhering from a place where no is formed.

  In addition, in FIG. 9, although the shape of the opening was described as an example of an elliptical shape, the water-absorbing hose foreign matter removing jig according to the present invention generates a water flow without any gap on the outer peripheral side of the strainer 6. As long as water can be discharged as described above, the opening may have an oval shape. Further, the axial length along the circumferential direction of the water shower jig 7 only needs to be formed longer on the discharge side than the axial length on the annular flow path 9 side, and therefore the length in the radial direction also changes. You may do. Further, in the above-described example, only the through holes 10 arranged on the same circumference are shown. However, the through holes 10 are formed on the inner and outer peripheral sides of the water shower jig 7, respectively, By forming the circumferential through hole toward the inner circumferential side in the radial direction, the water flow generated by the water discharged from the inner circumferential through hole removes the foreign matter 5 attached to the outer circumferential surface of the strainer 6. It may be configured as described above.

  The shape of the through hole 10 shown in FIGS. 1 and 9 generates a water flow discharged from the water shower jig 7 without a gap on the outer peripheral side of the strainer 6 by intersecting with the water flow discharged from the adjacent through hole 10. However, it may be configured to generate a spiral water flow on the outer peripheral side of the strainer 6 by changing the inclination of each through-hole 10 as shown in FIG. Here, the shape of the through-hole 10 shown in FIG. 10 will be specifically described. In the example shown in FIG. 10, a plurality of through-holes 10a and 10b are formed along the respective circumferential directions of the inner peripheral side and the outer peripheral side. Has been. The through hole 10a corresponds to the “first through hole” of the present invention, and the through hole 10b corresponds to the “second through hole” of the present invention. Each through-hole 10a, 10b is formed at equal intervals in the circumferential direction. Furthermore, each through-hole 10a formed on the inner peripheral side is formed such that the opening on the discharge side faces the inner peripheral side from the opening on the annular flow path 9 side, and each through-hole 10a has an annular shape. The opening on the discharge side is formed so as to be inclined in the clockwise direction in the circumferential direction from the opening on the channel 9 side. That is, a spiral water flow is generated on the outer peripheral side of the strainer 6 by the water flow discharged from each through hole 10a formed on the inner peripheral side, and the water flow is made along or in contact with the outer peripheral surface of the strainer 6. Is formed.

  Each through-hole 10b formed on the outer peripheral side is formed such that the opening on the discharge side faces the outer peripheral side from the opening on the annular flow path 9 side, and each through-hole 10b is formed in an annular flow path. The opening on the discharge side is formed to be inclined counterclockwise in the circumferential direction from the opening on the 9 side. In other words, the water flow discharged from each through hole 10b formed on the outer peripheral side causes the water flow from each through hole 10a formed on the inner peripheral side to be closer to the outer peripheral side than the spiral water flow generated by the water flow. It is formed so as to generate a spiral water flow that flows in the opposite direction to the water flow generated on the circumferential side.

  Therefore, by forming the through-hole 10 as shown in FIG. 10, the foreign material 5 adhering to the outer peripheral surface of the strainer 6 is removed by the water flow generated by the water discharged from the through-hole 10a formed on the inner peripheral side. In addition, it is possible to suppress or prevent the foreign material 5 from approaching the strainer 6 due to the water flow generated by the water discharged from the through hole 10b formed on the outer peripheral side. Further, since the water flow generated by the water discharged from the through holes 10a and 10b formed on the inner peripheral side and the outer peripheral side is spiral, the water flow is generated without any gap so as to surround the outer peripheral side of the strainer 6. Can be generated.

  The shape of each through-hole 10 described above is such that the water flow discharged from the through-hole 10 surrounds the outer periphery of the strainer 6 without any gaps. By increasing the flow velocity of the water flow, the foreign matter 5 is placed on the strainer 6. It is possible to suppress or prevent the adhesion or the approach of the foreign material 5. FIG. 11 shows the shape of the through hole 10 for increasing the flow rate of the discharged water flow. The through holes 10 shown in FIG. 11 are formed at equal intervals in the circumferential direction, like the through holes 10 shown in FIGS. Each through-hole 10 has an annular opening on the flow path 9 side and an opening on the discharge side formed in a circular shape. Furthermore, the through hole 10 is formed in a tapered shape, and the opening area of the opening on the discharge side is smaller than the opening area of the opening on the annular flow path 9 side. Therefore, the flow velocity of the water flow discharged from the through hole 10 can be increased as compared with FIGS. 1 and 9. By increasing the flow velocity of the water flow in this way, it is possible to more effectively suppress or prevent the foreign matter 5 from approaching the strainer 6 when a large amount of the foreign matter 5 is accumulated or floating. Further, by increasing the water flow, there is a possibility that a flow in the same direction as the water flow discharged from the water shower jig 7 is generated in the water that is dragged by the water flow and stays between the through holes 10 in the circumferential direction. As a result, it is possible to suppress or prevent the foreign substance 5 from approaching the strainer 6 by generating a water flow without a gap so as to surround the outer periphery of the strainer 6.

  In the example shown in FIG. 11, only the through holes 10 arranged on the same circumference are shown, but the through holes 10 are formed on each of the inner peripheral side and the outer peripheral side of the water shower jig 7. By forming the inner peripheral side through hole toward the inner peripheral side in the radial direction, the water flow generated by the water discharged from the inner peripheral side through hole causes the foreign matter 5 attached to the outer peripheral surface of the strainer 6 to be removed. It may be configured to be removed.

  Further, as shown in FIG. 11, the opening area of the opening on the discharge side is made smaller than the opening area of the opening on the annular channel 9 side, and the water discharged from the through hole is shown in FIG. You may form each through-hole inclining with respect to an axial direction so that a water flow may become a spiral shape. By forming in this way, the flow rate of the water flow is increased and the water flow is generated in a spiral shape, whereby the foreign material 5 attached to the strainer 8 can be removed or the foreign material 5 approaches the strainer 6. Can be suppressed or prevented.

  The foreign matter removing jig for the water absorption hose according to the present invention is only required to be able to generate a water flow so as to surround the outer periphery of the strainer 6, so that the mounting structure of the water shower jig 7 and the connection of the first water discharge hose 13 are used. The structure and the like are not limited to the above-described configuration. In the above-described example, only one first water discharge hose 13 is connected to the water shower jig 7, and the annular flow path 9 is formed so that the water supplied from the first water discharge hose 13 flows in an annular shape. However, a plurality of hoses for supplying water to the water shower jig 7 may be provided. Furthermore, the foreign matter removing jig for a water absorption hose according to the present invention is not limited to a firefighting one, but is basically provided with a filter and a strainer so as to suck in the stored water and prevent foreign matter from entering the sucked water. If it is.

  DESCRIPTION OF SYMBOLS 1 ... Fire pump car, 3 ... Water absorption hose, 5 ... Foreign material, 6 ... Strainer, 7 ... Water shower jig, 9 ... Flow path, 10 ... Through-hole, 13 ... 1st water discharge hose.

This invention was made with the above circumstances as the background, foreign matter removing water hose can the child suppress or prevent the foreign matter from the filtering device provided at the distal end of the water hose for sucking water approaches The object is to provide a jig.

To achieve the above object, a first aspect of the invention, covers the suction port side of the connected water hose to the suction port of the pump, and Filtration means is provided for water from the outer peripheral surface of the filtering means the outer peripheral surface side, the water hoses foreign matter removing jig of spraying pressurized pressurized by said pump, at one end side or in the axial direction of the filtration hand stage, than the outer diameter of the filtration means is the inner diameter also is larger, and comprises a container annular before Symbol pump Ru pressurized water is supplied to the container, the pressure of the membrane surrounding the and the filtration unit at a peripheral surface with a gap of said filter means so as to form, it is characterized in that a plurality of through holes for jetting a pressurized water in the axial direction of the filter means is made form.

According to a second aspect of the invention, in the invention of claim 1, water hose opening area of the filtration means side of the through hole, characterized by being made form smaller than the opening area of the inner side of the container This is a foreign matter removing jig .

According to a third aspect of the present invention , in the first aspect of the invention, a streamline of pressurized water ejected from any one of the plurality of through holes and a pressurized water ejected from a through hole adjacent to the through hole. and it streamlines a water hose foreign matter removing jig you characterized by being configured so as to intersect in the circumferential direction of the filtering means.

The invention according to claim 4, characterized in that in the invention of claim 1, each of the previous SL multiple penetrations holes, characterized that you are formed to be inclined in the same direction in the circumferential direction of the container water This is a foreign matter removing jig for hoses .
According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the container has another through hole formed inside the container in the radial direction with respect to the plurality of through holes. The through hole is formed such that the opening on the filtering means side faces the inner side in the radial direction of the container from the opening on the inner side of the container so that pressurized water is jetted toward the outer peripheral surface of the filtering means. It is the foreign material removal jig for water absorption hoses characterized by having.

According to the present invention, covering the suction port side of the connected water hose to the suction port of the pump, Filtration means is provided for water from the outer peripheral surface, the outer peripheral surface side of the filter means, pressurized by a pump since spraying the pressurized pressurized water, it is possible to suppress or prevent the foreign matter on the outer peripheral surface of the filter means to approach being sucked. Further, the one end portion side or in the axial direction of the filtration hand stage, inner diameter than the outer diameter of the filter means is larger, a container pressurized water is supplied is provided from Katsupo pump, in its container, spaced outer peripheral surface and the clearance of the filter means and surrounding the filtering means so as to form a film of water pressure, since multiple through holes for jetting pressurized water in the axial direction of the filter means is made form, the number of double of by pressurized water is ejected from the through hole, it is possible to foreign matter to the outer peripheral surface of the filter means to inhibit or prevent the approach is sucked.

According to the invention of claim 2, since the opening area on the filtration means side in the through hole is formed smaller than the opening area on the inner side of the container, the flow rate of the water ejected from the through hole is increased. Can do. As a result, when a large amount of foreign matter is accumulated or floated, it is possible to more effectively suppress or prevent the foreign matter from approaching the filtering means. Further, by increasing the water flow, there is a possibility that a flow in the same direction as the water flow ejected also in the water staying between the through holes in the circumferential direction due to the water flow is generated. A water flow can be generated so as to surround the outer periphery of the means without a gap . Therefore, it is the child suppressed or prevented more reliably that the foreign object approaching from the outer peripheral side of the Filtration means.

Furthermore, according to the invention of claim 3, a streamline of pressurized water ejected from any one of the plurality of throughholes, and a streamline of pressurized water ejected from a throughhole adjacent to the throughhole Are configured to intersect in the circumferential direction of the filtering means. Therefore, it is the child suppress or prevent more reliably approaching foreign material from the outer peripheral side of the filter means.

Further, according to the invention of claim 4, each of the plurality of penetrations holes, because it is formed to be inclined in the same direction in the circumferential direction of the container, caused by pressurized water jetted from each of the through holes water flow becomes a spiral, as a result, it is possible to generate a water stream so as to surround without clearance an outer periphery of filtration unit. Therefore, it is possible to remove more reliably foreign matter from the outer peripheral side of the Filtration hand stage is inhibited or prevented from approaching, or adhering to the outer peripheral surface of the filtration means foreign matter.

And according to invention of Claim 5 , another through-hole is formed in the container in the radial inside of a container rather than a some through-hole, and another through-hole is toward the outer peripheral surface of a filtration means. The opening on the filtering means side is formed so as to face the inner side in the radial direction of the container relative to the opening on the inner side of the container so as to eject the pressurized water. Therefore, other by transmural hole or al ejected the water flow generated by the pressurized water to remove foreign matter adhering to the outer peripheral surface of the filtration unit, or One the transmembrane hole or al filtering means by water flow generated by the ejected by the pressurized water It is possible to suppress or prevent the foreign matter from approaching.

Claims (4)

In the foreign matter removing jig for a water absorption hose provided with filtering means on the suction port side of the water suction hose connected to the suction port of the pump, and spraying pressurized water pressurized by the pump on the outer surface side of the filtration means,
The filtration means is provided so as to cover an outer surface of the water absorption hose,
A container that is provided on the outer surface side of the filtration means and on one end side in the axial direction of the filtration means, and is supplied with pressurized water from the pump;
A plurality of through holes formed on the wall surface of the container along the outer surface of the filtering means, and discharging the pressurized water to the filtering means side;
A foreign matter removing jig for a water absorption hose, wherein the bus bar on the inner wall surface of the through hole and the bus bar on the inner wall surface of the through hole adjacent to the through hole are formed to intersect each other. In the foreign matter removing jig for a water absorption hose provided with filtering means on the suction port side of the water suction hose connected to the suction port of the pump, and spraying pressurized water pressurized by the pump on the outer surface side of the filtration means,
The filtration means is provided so as to cover an outer surface of the water absorption hose,
A container that is provided on the outer surface side of the filtration means and on one end side in the axial direction of the filtration means, and is supplied with pressurized water from the pump;
A plurality of through-holes that are annularly arranged along the outer surface of the filtering means and are formed through the container so as to discharge the pressurized water to the filtering means side;
Each of the plurality of through holes is formed to be inclined in the same direction along a circumferential direction in which the plurality of through holes are arranged. In the foreign matter removing jig for a water absorption hose provided with filtering means on the suction port side of the water suction hose connected to the suction port of the pump, and spraying pressurized water pressurized by the pump on the outer surface side of the filtration means,
The filtration means is provided so as to cover an outer surface of the water absorption hose,
A container that is provided on the outer surface side of the filtration means and on one end side in the axial direction of the filtration means, and is supplied with pressurized water from the pump;
A plurality of through holes formed on the wall surface of the container along the outer surface of the filtering means, and discharging the pressurized water to the filtering means side;
The foreign matter removing jig for a water absorption hose, wherein an opening area on the filtration means side in the through hole is formed smaller than an opening area on the inner side of the container.   The through hole has a first through hole formed such that an opening on the filtering means side faces an outer surface side of the filtering means from an opening on the container side, and an opening of the filtering means from the first through hole. The foreign matter removing jig for a water absorption hose according to any one of claims 1 to 3, further comprising a second through hole formed at a position away from the outer surface.

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