JP2015112504A - Injection washing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection washing apparatus capable of easily inserting an injection nozzle, and capable of simply adjusting washing power at a job site, while avoiding clogging of the injection nozzle, mainly in a landslide preventive hole keeping pipe.SOLUTION: An injection washing apparatus comprises: a mixing part 5 provided with a pipe 2 having a valve 6 for adjusting a water quantity of pressurized water 8 while passing the pressurized water 8, a pipe 3 having a valve 7 for adjusting a flow rate of compressed air 9 while passing the compressed air 9 and a pipe 4 for mixing and passing the pressurized water 8 from the pipe 2 and the compressed air 9 from the pipe 3 to the downstream side; a hose part 10 positioned on the downstream side of the mixing part 5 and passing the mixed pressurized water 8 and the compressed air 9 to the downstream side; and an injection nozzle part 11 positioned on the downstream side of the hose part 10 and jetting the mixed pressurized water 8 and the compressed air 9.

Description

  The present invention relates to a jet cleaning apparatus that simultaneously jets compressed air and pressurized water to eliminate clogging of a landslide prevention hole-holding pipe and the like and to clean the inside of the hole-holding pipe and the like.

  Conventionally, in order to remove groundwater, which is the main cause of landslides, drainage drilling has been carried out from the surface of the ground, or groundwater has been collected by collecting from the wells to collect groundwater. Yes. In general, a method of stopping or mitigating the landslide movement by changing the topography of the landslide area, the state of groundwater, etc. is referred to as suppression work.

  As one of the restraining works, there is known a technique called draining boring in which a retaining tube having a strainer (hole) is inserted into the ground and the spring water in the ground is collected. When this drainage boring has been used for many years, there is a problem that filth accumulates in the inside of the hole-holding tube and clogging occurs in the strainer and the drainage function becomes insufficient. As a method for solving this problem, conventionally, a method of cleaning the inside of the hole-holding tube and the strainer by injecting high-pressure water from an injection nozzle provided at the tip of the hose has been adopted.

  For example, Patent Document 1 discloses a cleaning head in which a snake wire hose is appropriately drawn to the tip of a winding drum that can be wound and stored, and high-pressure cleaning water distributed from the winding drum shaft is attached to the tip of the snake wire hose. There is disclosed a water supply / drainage pipe cleaning machine that cleans a fixed filth layer by piercing a part with an injection port and jetting water from a cleaning head.

Japanese Utility Model Publication No. 49-37403

  However, the conventional high-pressure cleaning equipment that cleans the hole-preserving tube for preventing landslides uses only high-pressure water, so not only a large amount of water is required, but also the inside of the hole-holding tube and the strainer are clogged. There has been a problem that it is not possible to easily adjust the cleaning power according to the type and accumulated amount of sediment and dirt that cause it.

  Further, in the water supply / drainage pipe cleaner disclosed in Patent Document 1, since a plurality of guide weights are connected to the tip of the cleaning head, when inserting the cleaning head deep inside the long hole holding pipe in which the filth layer is accumulated, There was a problem that the filth layer hindered the progress of the cleaning head and it was difficult to insert the cleaning head.

  Therefore, the problem to be solved by the present invention is that the injection nozzle can be easily inserted into the hole-preserving tube mainly for preventing landslide while avoiding clogging of the injection nozzle, and the cleaning power can be easily adjusted in the field. It is to provide a cleaning device.

  The present invention has been made to solve the above-mentioned problems, and the jet cleaning device according to claim 1 includes a first pipe having a first valve for passing pressurized water and adjusting the amount of the pressurized water, and compressed air. A second pipe that passes through, a third pipe that mixes the pressurized water from the first pipe and the compressed air from the second pipe, and passes the second pipe to the downstream; and a position downstream of the mixing section And a hose portion that passes the mixed pressurized water and the compressed air downstream, and an injection nozzle portion that is located downstream of the hose portion and ejects the mixed pressurized water and the compressed air. It is a feature.

  According to the jet cleaning apparatus of the first aspect, since the compressed air is mixed with the pressurized water, the jetting speed of the pressurized water can be increased, the cleaning power can be increased, and the cleaning time can be shortened.

  In addition, according to the jet cleaning device of claim 1, the pressure and the amount of the pressurized water can be reduced by supplementarily mixing the pressurized water with the compressed air, and the economic efficiency is improved. Environmentally friendly cleaning is possible.

  Further, according to the jet cleaning apparatus of the first aspect, the amount of pressurized water and the compressed air are adjusted by adjusting the first valve according to the state of earth and sand in the hole-holding pipe and the like, and the strainer clogging. Since the mixing ratio with the amount can be changed, it is possible to easily realize cleaning suitable for various soils and dirt on site. For example, if the soil quality and dirt in the hole-holding pipe are highly viscous, increase the mixing ratio of the pressurized water, and in the opposite case, adjust the pressure water mixing ratio low to Cleaning suitable for filth is possible.

  According to a second aspect of the present invention, in the jet cleaning device according to the first aspect, the second pipe includes a second valve that adjusts a flow rate of the compressed air.

  According to the jet cleaning apparatus of the second aspect, in addition to the effect of the first aspect, the mixing ratio of the amount of pressurized water from the first pipe and the compressed air from the second pipe is set to the first valve and the second valve. Therefore, it is easy to increase or decrease the mixing ratio, and it is easier to perform cleaning according to the length and inner diameter of the hole-holding pipe, the quality of the sediment in the hole-holding pipe, the degree of dirt, etc. can do.

  According to a third aspect of the present invention, in the jet cleaning device according to the first or second aspect, the third pipe includes a third valve that adjusts a total flow rate of the mixed pressurized water and the compressed air. It is said.

  According to the jet cleaning device of the third aspect, in addition to the effect of the first or second aspect, the third valve for adjusting the total flow rate of the pressurized water and the compressed air is provided in the third pipe. Since the total flow rate passed downstream by the third valve can be easily adjusted while fixing the mixing ratio between the air and the compressed air, it is easier to perform the washing operation according to the quality of the soil and the degree of dirt in the retaining tube. Become.

  According to a fourth aspect of the present invention, there is provided the spray cleaning apparatus according to any one of the first to third aspects, wherein the spray nozzle includes a distal end portion that does not have an ejection port and a proximal end portion that is connected to the hose portion. And a cylindrical intermediate portion located between the both end portions, and the intermediate portion includes a plurality of injection ports on the side surface for injecting the mixed compressed air and the pressurized water from the side surface direction to the upstream direction. It is characterized by that.

  According to the spray cleaning device of the fourth aspect, in addition to the effect of any one of the first to third aspects, a plurality of spray ports directed from the side surface direction to the upstream direction are provided. Therefore, the compressed air and the pressurized water are injected from the injection port directed in the upstream direction, and become a propulsive force for moving the injection nozzle forward, and the internal earth and sand and filth are directed toward the inlet of the upstream retaining tube or the like. Can be guided.

  In addition, according to the injection device of the fourth aspect, since the jet nozzle is not provided at the tip of the jet nozzle part, the hole-holding tube is provided at the tip of the jet nozzle without the jet nozzle being clogged with dirt or soil. The injection nozzle can be advanced to the inside of the hole-holding tube or the like while piercing the inside of the hole.

  Furthermore, according to the jet cleaning apparatus of the fourth aspect, since the low pressure water is used instead of the high pressure as compared with the spray cleaning apparatus using only the high pressure water, the thickness of the hose can be reduced and the hose material is reduced. In addition, the hose can be reduced in weight, making operation easier.

  According to a fifth aspect of the present invention, in the fourth aspect, the tip of the spray nozzle is hemispherical or conical.

  According to the jet cleaning device of the fifth aspect, in addition to the effect of the fourth aspect, the tip portion of the spray nozzle is hemispherical or conical, so that the tip portion of the spray nozzle is provided inside the hole-holding tube or the like. When inserting the injection nozzle, it becomes easy to insert the injection nozzle even if the dirt and soil in the hole-holding tube are hard and viscous.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the first pipe and the third pipe are on the same straight line, and the second pipe is the first pipe. The first pipe is joined at an angle of 45 ° or less with respect to the downstream direction.

  According to the jet cleaning device of the sixth aspect, in addition to the effect of any one of the first to fifth aspects, the first pipe and the third pipe are on the same straight line, and the second pipe is Since the pressurized water is merged along the same downstream direction at an angle of 45 ° or less with respect to the downstream direction of the first pipe, the pressure loss of the compressed air caused by the merged pressurized water can be reduced, It is possible to provide a jet cleaning apparatus with less pressure loss of compressed air.

  According to the present invention, it is possible to provide an injection cleaning apparatus in which an injection nozzle can be easily inserted into a hole-holding tube for preventing landslide mainly, and the cleaning power can be easily adjusted on site while avoiding clogging of the injection nozzle.

It is one Embodiment of the jet cleaning apparatus which concerns on this invention, Comprising: It is a schematic diagram which shows the whole structure. It is an enlarged view of the mixing part in FIG. It is an enlarged view of the injection nozzle part in FIG. It is CC partial expansion longitudinal center sectional drawing of the injection nozzle part of FIG. It is a BB partial expansion vertical center sectional view of the injection nozzle part of FIG. It is an enlarged view of the mixing part which shows other embodiment of the jet cleaning apparatus which concerns on this invention. It is a figure with which it uses for description of the injection angle of an injection cleaning apparatus, Comprising: (A) Conventional injection cleaning apparatus, (B) The injection cleaning apparatus which concerns on this invention.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail. The present invention is applied to, for example, the jet cleaning apparatuses 1 and 21 configured as shown in FIG. 1 or FIG.

1. Configuration of the jet cleaning apparatus 1, 21 An outline of the configuration of the jet cleaning apparatus 1 will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the jet cleaning apparatus 1 includes a pipe 2 having a valve 6 for adjusting the amount of pressurized water 8 through a pressurized water 8 sent from a high pressure pump (not shown), and a compressor (not shown). .)), The pipe 3 having a valve 7 for adjusting the flow rate of the compressed air 9, the pressurized water 8 from the pipe 2, and the compressed air 9 from the pipe 3 are mixed to the downstream. A mixing part 5 provided with a pipe 4 to be passed, a hose part 10 that is located downstream of the mixing part 5 and that passes the mixed pressurized water 8 and compressed air 9 downstream, and is located downstream of the hose part 10; The main part is an ejection nozzle part 11 that ejects the mixed pressurized water 8 and compressed air 9.

  The mixing unit 5 is composed of a pipe 4 that mixes the pressurized water 8 from the pipe 2 and the compressed air 9 from the pipe 3 and passes it downstream, and the pipe 3 and the pipe 4 are on the same straight line. For example, the pipe 3 and the pipe 4 are connected in a Y shape at an angle of 25 °. The pipes 2, 3, and 4 are made of, for example, steel and have an outer diameter of 3 cm and an inner diameter of 2 cm.

  The valve 6 is provided in the pipe 2, and the valve 6 is configured by, for example, a handle provided in the pipe 2 and connected to the valve outside the pipe 2. The amount of pressurized water 8 is adjusted by rotating the handle.

  As shown in FIG. 6, the valve 7 is provided in the pipe 3, and the valve 7 is configured by, for example, a valve provided in the pipe 3 and a handle connected to the valve outside the pipe 3. Yes. The flow rate of the compressed air 9 is adjusted by rotating the handle.

  The pressurized water 8 is water pressurized to, for example, about 14.7 MPas by a high-pressure pump (not shown), and the compressed air 9 is pressurized to, for example, about 0.7 MPas by a compressor (not shown). Air.

  The amount of the pressurized water 8 and the amount of the compressed air 9 are adjusted by opening and closing the handles of the valves 6 and 7, and the compressed water 9 is supplementarily mixed with the compressed air 9 so that the cleaning power is maintained at a high level. The amount of water to be reduced can be reduced to about 2 minutes or less than the conventional amount of water. In addition, the cleaning time can be shortened to about three-quarters of the work time required for cleaning with conventional high-pressure water only.

  If the earth and sand in the hole-holding tube are solidified, the amount of the pressurized water 8 to be used is increased in order to soften the earth and sand and dirt that have been solidified with the pressurized water 8 to reduce the viscosity and facilitate cleaning. The ratio occupied by the compressed air 9 needs to be reduced, and the ratio between the pressurized water 8 and the compressed air 9 can be largely changed by a simple operation by adjusting both the valves 6 and 7.

  The hose part 10 is, for example, a tube made of vinyl chloride resin having an outer diameter of 2.5 cm, an inner diameter of 2 cm, and a length of 10 m to 120 m, and the pressurized water 8 and the compressed air 9 sent from the mixing part 5 are injected into the injection nozzle part 11. Lead to. The hose part 10 can withstand about 14.7 MPas which is the pressure of the mixture of the pressurized water 8 and the compressed air 9.

  As shown in FIG. 1 or FIG. 3, the injection nozzle portion 11 has a cylindrical shape with the outer shape of the tip being substantially spherical (hemispheric), and an injection port 12 is provided on the outer peripheral side surface. It should be noted that the outer shape of the tip of the injection nozzle unit 11 may be conical or elliptical as long as the injection nozzle unit 11 can be easily inserted into the hole-holding tube with little resistance.

  The shape of the injection port 12 is usually a circular hole or an ellipse, but may be a slit that is long in the circumferential direction. In the case of a slit, the jet jet expands into a film. In this case, since the jet jet is enlarged and jetted in a film shape, the mixture of the pressurized water 8 and the compressed air 9 can be reliably jetted onto the strainer scattered on the inner wall of the hole holding tube.

  The injection port 12 is provided on the outer peripheral side surface of the injection nozzle unit 11 and is sprayed to 360 ° around the entire inner wall of a hole-holding tube or the like where the mixture of the pressurized water 8 and the compressed air 9 from the hose unit 10 is washed. A plurality of such holes are made.

  For example, about 4 to 6 injection ports 12 are provided, and each of the injection ports 12 is formed radially at substantially equal intervals in the circumferential direction of the injection nozzle body 11. And preferably, the angle between the axis of the inner tube forming the injection port 12 and the surface orthogonal to the axis of the nozzle body 11 is set to about 45 °.

  The injection port 12 is provided so as to be inclined so that a mixture of the pressurized water 8 and the compressed air 9 is injected in the upstream direction with respect to the outer peripheral side surface of the injection nozzle unit 11.

  Further, the injection port 12 is not provided in the tip direction of the injection nozzle unit 11. This is because when the injection nozzle portion 11 is repeatedly inserted and retreated in the hole-holding tube or the like, earth and sand and dirt are prevented from clogging the injection port 12.

  In the jet cleaning device 21 which is another embodiment of the present invention, the jet port 12 is also provided in the tip direction of the jet nozzle portion 11. Since the conventional injection nozzle has the injection port 12 provided only at the tip, in order to clean the inner wall of the hole-holding tube, it is necessary to increase the injection angle as shown in FIG. As a result, the water pressure concentrated at one point is reduced and the cleaning power is weakened, and it is difficult to insert the nozzle in the back while selectively cleaning the dirt and dirt of the hole-holding pipe existing in the tip direction of the nozzle Met.

  On the other hand, as shown in FIG. 7 (B), the spray nozzle unit 11 of the spray cleaning device 21 can narrow the tip spray angle and increase the cleaning power in the tip direction. Combined with the effect of the injection, it becomes easy to insert the nozzle in the back while selectively washing the dirt and dirt of the hole-holding tube existing in the tip direction of the nozzle.

  The hose portion 10 and the injection nozzle portion 11 are inserted into the inner wall of the downstream end portion of the hose portion 10 while being screwed into the inner wall of the upstream end portion of the injection nozzle portion 11 while being screwed. The part 10 and the injection nozzle part 11 are closely connected. Although not shown, the connection between the injection nozzle portion 11 and the hose portion 10 is reinforced by tightening the outer periphery of the hose portion 10 with a metal belt so as not to be detached due to the pressure of the compressed air 9. preferable.

  The embodiment of the jet cleaning apparatus 1 is as described above. However, the inner diameter of the hole-holding pipe or the like to be cleaned (domestic hole-holding pipe 40 mm or more, stool 75 mm or more), length, degree of dirt, soil quality Depending on the situation, the material, the outer diameter, the inner diameter, the thickness of the pipe, and the like of the pipe 2, the pipe 3, the pipe 4, and the hose portion 10 are not limited to these.

  Moreover, although the material of the piping 2, piping 3, and piping 4 uses steel, stainless steel, copper, brass, aluminum, etc. can be employ | adopted.

  Furthermore, although the length of the hose portion 10 is 10 to 120 m, it can be appropriately changed according to the length of the hole-holding tube to be cleaned.

  Next, with reference to FIG. 6, the jet cleaning apparatus 21 which is other embodiment of this invention is demonstrated. However, since the configuration of the jet cleaning device 21 is different from the configuration of the jet cleaning device 1 only in the configuration of the mixing unit 5 and the other configuration is the same, here, the configuration of the mixing unit 5 of the jet cleaning device 21 is the same. I will explain only.

  As shown in FIG. 6, the mixing section 5 of the jet cleaning device 21 includes a pipe 2 having a valve 6 for passing the pressurized water 8 and adjusting the amount of the pressurized water 8, a pipe 3 for passing the compressed air 9, And a mixing section 5 provided with a pipe 4 having a valve 7 for mixing the pressurized water 8 and the compressed air 9 from the pipe 3 and passing them downstream.

  Since the valve 7 is provided in the pipe 4, the total amount of the mixture of the pressurized water 8 from the pipe 2 and the compressed air 9 from the pipe 3 can be adjusted at a time. Therefore, it is not necessary to adjust the ratio of the amount of pressurized water 8 from the pipe 2 and the amount of compressed air 9 from the pipe 3 and can be easily operated.

2. Operation of the jet cleaning apparatus 1, 21 Next, the operation of the jet cleaning apparatus 1 will be described. First, when the valve 7 is opened, compressed air 9 flows into the pipe 3 from a compressed air device (not shown) and is injected upstream from the injection port 12 of the injection nozzle 11 through the hose portion 10.

  When the valve 6 is opened, the pressurized water 8 flows into the pipe 2, the compressed air 9 and the pressurized water 8 are mixed in the mixing unit 5 and flows into the pipe 4, and compressed from the injection port 12 of the injection nozzle 11 through the hose unit 10. A mixture of air 9 and pressurized water 8 is ejected.

  In the case of the jet cleaning device 21, when the valve 7 is opened, the compressed air 9 flows from the compressor (not shown) into the pipe 3 and further into the pipe 4.

  When the valve 6 is opened, the pressurized water 8 flows into the pipe 2, and the compressed air 9 and the pressurized water 8 are mixed in the mixing unit 5 and flow into the pipe 4. The forward flow rate of the total flow rate of the mixture of the pressurized water 8 and the compressed air 9 is appropriately controlled by adjusting the valve 7.

  Since the injection port 12 is provided so as to incline so that the mixture of the pressurized water 8 and the compressed air 9 is injected in the upstream direction from the outer peripheral side surface of the injection nozzle unit 11, the injection nozzle 11 is inclined rearward. A propulsive force that moves forward in the retaining tube or the like is obtained by the reaction force of the mixture of the pressurized water 8 and the compressed air 9 to be injected.

  Since the forward speed is appropriately controlled by adjusting the valve 6 and the valve 7, the amount of the mixture of the pressurized water 8 and the compressed air 9 is set to be long by repeating the forward and backward by these adjustments. The hole is repeatedly pierced through the hole-holding tube, etc., and moved forward while washing dirt and dirt.

  Further, the mixture of the pressurized water 8 and the compressed air 9 injected from the injection nozzle 11 peels and removes the earth and sand adhering to the inner peripheral surface of the hole-holding tube and the like one after another.

3. How to Use the Jet Cleaning Devices 1 and 21 Finally, the method of using the jet cleaning device 1 will be described. First, when the user opens the valve 7, the compressed air 9 flows from the compressor (not shown) into the pipe 3 and is injected upstream from the injection port 12 of the injection nozzle 11 through the hose portion 10.

  Next, when the user opens the valve 6, the pressurized water 8 flows into the pipe 2, the mixed air 5 is mixed with the compressed air 9 and the pressurized water 8, flows into the pipe 4, and is injected through the hose part 10. The compressed air 9 and the pressurized water 8 are ejected from the 11 ejection ports 12 in a mixed state.

  In the case of the jet cleaning device 21, the user adjusts the amount of the mixture of the compressed air 9 and the pressurized water 8 by opening and closing the valve 7 in accordance with the state in the hole holding tube or the like.

  The user inserts the injection nozzle 11 into a hole-holding tube or the like. Here, the user adjusts the amount of the mixture of the compressed air 9 and the pressurized water 8 by opening and closing the valve 6 and the valve 7 in accordance with the state in the hole-holding pipe etc. Wash soil and dirt while drilling repeatedly.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1,21 Jet cleaning apparatus 2,3,4 Pipe 5 Mixing part 6,7 Valve 8 Pressurized water 9 Compressed air 10 Hose part 11 Injection nozzle part 12 Injection port

Claims (6)

A first pipe having a first valve for passing pressurized water and adjusting the amount of the pressurized water, a second pipe for passing compressed air, pressurized water from the first pipe, and compressed air from the second pipe are mixed. And a mixing section provided with a third pipe passing downstream,
A hose portion that is located downstream of the mixing portion and passes the mixed pressurized water and the compressed air downstream;
An injection cleaning apparatus, comprising an injection nozzle portion that is located downstream of the hose portion and that jets the mixed pressurized water and the compressed air.   The jet cleaning apparatus according to claim 1, wherein the second pipe includes a second valve that adjusts a flow rate of the compressed air.   3. The jet cleaning apparatus according to claim 1, wherein the third pipe includes a third valve that adjusts a total flow rate of the mixed pressurized water and the compressed air. The spray nozzle is
A tip having no injection port;
A proximal end connected to the hose portion;
It consists of a cylindrical intermediate part located between the both ends,
The said intermediate | middle part equips a side surface with the several injection port which injects the mixed said compressed air and the said pressurized water from a side surface direction to an upstream direction. A jet cleaning apparatus according to claim 1.   The jet cleaning apparatus according to claim 4, wherein the tip portion is hemispherical or conical. The first pipe and the third pipe are on the same straight line,
The said 2nd piping merged with the said 1st piping at an angle of 45 degrees or less with respect to the downstream direction of the said 1st piping, In any one of Claims 1 thru | or 5 characterized by the above-mentioned. The jet cleaning apparatus as described.