KR101051721B1 - Grouting tip device using nozzle and protrusion - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grouting tip device using a nozzle and a projection, and in particular, formed in a cylindrical shape of a metal material having an upper and a lower end, two or more rows of upward nozzles formed on a side surface, and a first vortex protrusion at regular intervals on an outer surface thereof. An inner tube having a plurality of rows; The inner tube is formed in a cylindrical shape of a metal material having an upper and lower ends opened therein, and a second vortex protrusion is provided on the inner side so as to be symmetrical with the first vortex protrusion of the inner tube, and one or more rows of the fastener is discharged above the lower end. An upper strainer is formed, and at least one lower strainer is formed so that a final material is discharged from a lower end portion of the upper strainer; A fixing member fixed to the lower end of the inner tube; A stopper having a drainage hole formed at a center thereof and fixedly installed at an inner side of the lower end of the exterior; And a double-acting cylinder installed between the fixing member and the stopper to open and close the upper strainer or the lower strainer of the exterior, and to open and close the drain hole of the stopper.

According to the present invention as described above by forming an upward nozzle in the inner tube into which the liquid A flows, and by forming the vortex protrusions inside and outside the inner tube of the liquid B is introduced, so that the liquid A and the liquid B are mixed by the vortex By doing so, it is possible to form a complete solidified body in the ground, and it is possible to prevent the phenomenon of leaching by ground water or the like over time.

Ground, Grouting, Tip, Stirring, Vortex

Description

Grouting tip device using nozzle and protrusions {GROUTING FRONT DEVICE FOR USING NOZZLE AND PROTRUSION}

The present invention relates to a grouting tip device using a nozzle and a projection, and in detail, by forming an upward nozzle in the inner tube into which the A liquid flows, and forming a vortex protrusion inside the outer tube and the inner tube of the exterior in which the B liquid flows. It relates to a grouting tip device using a nozzle and a projection to mix the liquid and liquid B by vortex.

The grouting method is a method of injecting grout into the soil or the gap of a rock using an injection pump, etc., by installing an injection pipe on the ground and spraying the grout through the injection pipe, thereby solidifying the ground by injection material such as grout. It is a method to increase the bearing capacity of the vehicle, reduce the permeability coefficient, improve the water-repellency, reduce the compressibility, reduce the noise and vibration generated during construction, and enable construction of low vibration and low noise, and shorten the air.

The grouting method is widely used for various purposes such as reinforcement and order of ground, foundation pile formation, soft ground improvement, structure reinforcement, tunnel reinforcement and order for the recognition of its effect.

In addition, specific types of the conventional grouting method include the LW method and the SGR method.

The conventional ground reinforcement injection method, which is commonly used as a conventional 1.5 shot method, is a method of infiltrating a ground material with a special property for improving the soil characteristics to meet the purpose of use. In the above method, after inserting a mandrel tube with a rubber sleeve, the gravity injection seal material is injected between the mandrel tube and the casing, and the casing is drawn out. Put it in the stomach and inject from the desired position. At this time, the injection material pushes the rubber sleeve through the injection hole of the mandrel tube, destroys the material, and penetrates into the ground.

The LW method is mainly penetrated into the gravel layer and the sand layer, and is injected into the liquid phase in the soft viscous soil and silt layer, so that it is effective in preventing settlement and strengthening the ground, but it is difficult to inject it in the fine yarn layer below 0.6mm.

SGR (Space Grout Rocket System) method, which is a representative injection method of the conventional 2.0 shot method, forms an induction space on the target ground by combining a rack with a double pipe rod, and a water glass-based liquid and a cement mixture liquid having a gel time close to purity. The main injection materials are sodium silicate, fastener and cement. The main construction equipment is boring machine, mixing plant and injection plant.

In this SGR method, the grout discharged from the tip device is uniformly injected in all directions of the target ground through the guide space.

In addition, the SGR method is easy to continuous injection of the liquid A and liquid B by using a three tank type stirrer, generally available for both viscous and sandy soils.

Since the tip device is a structure in which the A medicine and the B medicine are transferred to each other as a grouting liquid and mixed by gravity inside and discharged to the outside, the stirring of the A medicine and the B medicine is not performed well inside, thereby forming a complete solid body in the ground. This is difficult, and as a result, there is a problem that the phenomenon of leaching by ground water or the like occurs over time.

In particular, in the case of the finished material, since the reactivity is lower than the quickener, when the A drug and the B liquid is not smoothly mixed, there is a problem that the grout performance is significantly reduced.

The present invention is to solve the above problems, by forming an upward nozzle in the inner tube into which the A liquid flows, and by forming a vortex protrusion on the inside and outside of the inner tube in which the B liquid flows, A liquid and B liquid vortex It is an object of the present invention to provide a grouting tip device using a nozzle and a projection for mixing by.

In addition, the present invention forms an upper strainer in which the fastener is injected on the upper side of the lower side of the exterior and a lower strainer in which the finalizer is injected on the lower side, and blocks the lower strainer during pre-injection of the fastener to serve as a packer. Another object of the present invention is to provide a grouting tip device using a nozzle and a projection to block the upper strainer during injection of the finished material to be injected after injection so that the final material is sufficiently injected into the microcavity by the packer.

Features of the present invention for achieving the above object,

An inner tube having an upper and lower ends formed in a cylindrical shape of a metallic material, two or more upward nozzles formed on side surfaces thereof, and a plurality of rows of first vortex protrusions formed at regular intervals on an outer surface thereof; The inner tube is formed in a cylindrical shape of a metal material having an upper and lower ends opened therein, and a second vortex protrusion is provided on the inner side so as to be symmetrical with the first vortex protrusion of the inner tube, and one or more rows of the fastener is discharged above the lower end. An upper strainer is formed, and at least one lower strainer is formed so that a final material is discharged from a lower end portion of the upper strainer; A fixing member fixed to the lower end of the inner tube; A stopper having a drainage hole formed at a center thereof and fixedly installed at an inner side of the lower end of the exterior; And a double-acting cylinder installed between the fixing member and the stopper to open and close the upper strainer or the lower strainer of the exterior, and to open and close the drain hole of the stopper.

Here, the upward nozzle of the inner tube is formed such that the upward nozzle positioned in the upper row and the upward nozzle positioned in the lower row are shifted by a predetermined angle with respect to the inner tube.

Here, the upward nozzle of the inner tube has an upward angle of 5 to 85 °.

Here, the first vortex protrusion of the inner tube and the second vortex protrusion of the outer shape are formed in a triangular shape, and the second vortex protrusion is disposed between the first vortex protrusion and the first vortex protrusion.

Here, the double-acting cylinder is provided with an opening and closing member for connecting the upper piston to the fixing member and opening and closing the drain hole of the stopper in the lower piston.

Here, the double-acting cylinder is provided with a drain passage in the longitudinal edge, and is provided with a solenoid valve for opening and closing the drain passage.

According to the tip of the grouting device using the nozzle and the projection of the present invention configured as described above, by forming an upward nozzle in the inner tube into which the A liquid flows, and by forming a vortex protrusion inside and outside the inner tube of the B liquid flowing By mixing the liquid and the liquid B by vortex, it is possible to form a complete solidified body in the ground, and to prevent the phenomenon of leaching by ground water or the like over time.

In addition, according to the present invention, the upper strainer is sprayed on the upper side of the lower end of the exterior and the lower strainer is sprayed on the bottom is completed, respectively, and the lower strainer is injected when the pre-injected fastener is injected to act as a packer When the final material is injected after the injection, the upper strainer may be blocked to sufficiently inject the final material into the fine pores by the packer.

Hereinafter, with reference to the accompanying drawings, the configuration of the grouting tip device using a nozzle and a projection according to the present invention will be described in detail.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a perspective view showing the configuration of the grouting tip device using the nozzle and the projection according to the present invention, Figure 2 is an exploded perspective view showing the configuration of the grouting tip device using the nozzle and the projection according to the present invention, Figure 3 Figure 4 is a side cross-sectional view showing the configuration of the grouting tip device using the nozzle and the projection according to the present invention, Figure 4 is a plan view showing the configuration of the upward nozzle of the inner tube of the grouting tip device using the nozzle and the projection according to the present invention.

1 to 4, the grouting tip device 100 using the nozzle and the projection according to the present invention includes an inner tube 110, an exterior 120, a fixing member 130, and a stopper 140. And a double-acting cylinder 150.

First, the inner tube 110 is formed in a cylindrical shape of a metal material of the upper and lower ends, one or more upward nozzles 111 are formed on the side to discharge the A liquid introduced into the inside, and the triangular shape at regular intervals on the outer surface. The first vortex protrusion 113 of is formed in a plurality of rows. Here, the upward nozzle 111 of the inner tube 110 is formed such that the upward nozzle located in the upper row and the upper nozzle located in the lower row so that the injection of the liquid A is evenly shifted with respect to the inner tube 110 at a predetermined angle. As shown in FIG. 4, four upward nozzles are formed in one row, and when formed in three rows, the angles of the first row, the second row, and the third row are shifted by 45 ° from each other. Here, the upward nozzle 111 of the inner tube 110 has an upward angle θ1 of 5 to 85 °, and preferably has an upward angle of 45 ° so that mixing is most smoothly performed.

In addition, the exterior 120 is formed in a cylindrical shape of a metal material having an upper and lower ends opened so that the inner tube 110 is accommodated therein, and is formed longer than the length of the inner tube, and the first vortex protrusion of the inner tube 110 on the inner surface ( The second vortex protrusion 121 having a triangular shape so as to be symmetrical with 113) is provided, and one or more rows of upper strainers 123 are formed to discharge the fastening material above the lower part, and the finished material is discharged to the lower part of the upper strainer 123. One or more rows of lower strainers 125 are formed. Here, the second vortex protrusion 121 is the first of the inner tube 110 to guide the flow of the liquid B in the zigzag direction so that the mixing with the liquid A injected from the upward nozzle 111 of the inner tube 110 is smooth. It is arranged to be located between the vortex protrusion 113 and the first vortex protrusion 113.

In addition, the fixing member 130 is formed in the shape of a circular bar made of a metal material, and is press-fitted to the lower end of the inner tube 110. Here, the fixing member 130 is preferably provided with a through-hole 131 in the longitudinal direction so that the hydraulic or pneumatic line of the double-acting cylinder 150 to be described later penetrates.

In addition, the stopper 140 is formed in a cylindrical shape of a metal bottom surface is open, the drain hole 141 is formed in the center is fixed to the inner side of the lower end of the exterior (120).

Meanwhile, the double acting cylinder 150 is installed between the fixing member 130 and the stopper 140 to open and close the upper strainer 123 or the lower strainer 125 of the exterior 120, and the drainage hole of the stopper 140. 141) open and close. Here, the double-acting cylinder 150 has a structure in which the upper piston 151 and the lower piston 153 can be individually extended and contracted by hydraulic or pneumatic pressure, respectively, and the upper piston 151 is connected to the fixing member 130. The conical opening and closing member 155 is provided to open and close the drain hole 141 of the stopper 140 in the lower piston 153. Here, the double-acting cylinder 150 is provided with a drain passage 157 at the longitudinal edge, and is provided with a solenoid valve 159 for opening and closing the drain passage 157. Here, the length of the double-acting cylinder 150 has a length for closing both the upper strainer 123 and the lower strainer 125 in the reference position. Reference numeral 152 in the figure denotes a valve for supplying hydraulic pressure or pneumatic pressure to the double-acting cylinder 150.

On the other hand, the upper end of the inner tube 110 and the outer 120 according to the present invention is connected to a stirring device (not shown) to supply water to the inner tube 110 and the outer 120, A liquid through the inner tube 110 And, supply the liquid B through the appearance 120, supply the hydraulic or pneumatic.

Hereinafter, the operation of the grouting tip device using the nozzle and the projection according to the present invention will be described in detail with reference to the accompanying drawings.

5 to 8 are explanatory views for explaining the operating state of the grouting tip device using the nozzle and the projection according to the present invention.

First, as shown in FIG. 5, an agitator is connected to the upper end of the inner tube 110 and the outer wall 120 to form an induction space in the target ground, and extends the upper piston 151 of the double-acting cylinder 150. Closes both the upper strainer 123 and the lower strainer 125 to block the inflow of foreign substances such as water and soil into the upper strainer 123 and the lower strainer 125 by using the outer surface of the double acting cylinder 150. Let's do it. At this time, the lower piston 153 maintains the contracted state so that the opening / closing member 155 is spaced apart from the stopper 140 so that the drainage hole 141 of the stopper 140 is opened.

Then, an electronic signal is generated from the outside to open the solenoid valve 159 of the double acting cylinder 150.

In this state, when high pressure water is supplied from the stirring device, the water is supplied to the inner tube 110 and the outer tube 120, respectively, and the water supplied to the inner tube 110 is the outer tube 120 through the upward nozzle 111. After being discharged to the lower end of the exterior 120 through the drain passage 157 of the double-acting cylinder 150 with the water delivered to the exterior 120, the target through the drain hole 141 of the stopper 140 It is sprayed into the ground to form guide space in the target ground.

When the induction space of the desired depth is formed, water spraying is terminated, and as shown in FIG. 6, the upper piston 151 of the double-acting cylinder 150 is further extended to use an upper strainer using the outer surface of the double-acting cylinder 150. Only 123 is opened and the lower strainer 125 is closed.

At the same time, the lower piston 153 is extended to block the inflow of foreign matter into the exterior 120, thereby closing the drain hole 141 of the stopper 140 with the opening / closing member 155, and through the drain passage 157. The electromagnetic valve 159 of the double-acting cylinder 150 is closed by generating an electronic signal from the outside to block the leakage of the liquid A and liquid B.

Then, A and B liquids, which are fasteners, are injected into the inner tube 110 and the outer shell 120 at a predetermined pressure through a stirring device.

Then, the liquid A is injected into the exterior 120 through the upward nozzle 111 of the inner tube 110, and the liquid B introduced into the exterior 120 is the first vortex protrusion 113 of the inner tube 110 and the exterior ( After descending into the vortex form through the second vortex protrusion 121 of 120, the liquid is mixed with the liquid A injected from the upward nozzle 111 and then lowered again.

Then, the quickener mixed with the liquid A and the liquid B is discharged into the guide space through the drain passage 157 and the upper strainer 123 of the double-acting cylinder 150 to form a packer.

When the packer is formed through the quickener, the upper piston 151 of the double acting cylinder 150 is contracted as shown in FIG. 7 to open only the lower strainer 125 using the outer surface of the double acting cylinder 150. , The upper strainer 123 is closed. At this time, the lower piston 153 is maintained in the same state as the fastener injection state, the solenoid valve 159 is discharged through the drain passage 157 of the double-acting cylinder 150 A and B liquid is lower strainer 125 Open to be injected).

Then, the liquid A and B liquid as a final material is injected into the inner tube 110 and the outer shell 120 at a predetermined pressure through a stirring device.

Then, the liquid A is injected into the exterior 120 through the upward nozzle 111 of the inner tube 110, and the liquid B introduced into the exterior 120 is the first vortex protrusion 113 of the inner tube 110 and the exterior ( After descending into the vortex form through the second vortex protrusion 121 of 120, the liquid is mixed with the liquid A injected from the upward nozzle 111 and then lowered again.

Then, the finished material mixed with the liquid A and the liquid B is discharged into the guide space through the drain passage 157 and the lower strainer 125 of the double-acting cylinder 150, and injected into the micro voids by the packer formed above.

On the other hand, when the injection of the finished material is completed, as shown in FIG. 8, the upper piston 151 of the double-acting cylinder 150 is extended to use the outer side of the double-acting cylinder 150 to form the upper strainer 123 and the lower strainer ( 125) Both the upper strainer 123 and the lower strainer 125 is closed to block the inflow of foreign substances such as water and soil. At this time, the lower piston 153 maintains a state in which the drainage hole 141 of the stopper 140 is closed.

As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

1 is a perspective view showing the configuration of the tip device for grouting using the nozzle and the projection according to the present invention;

Figure 2 is an exploded perspective view showing the configuration of the tip device for grouting using the nozzle and the projection according to the present invention,

Figure 3 is a side cross-sectional view showing the configuration of the tip device for grouting using the nozzle and the projection according to the present invention,

Figure 4 is a plan view showing the configuration of the upward nozzle of the inner tube of the grouting tip device using the nozzle and the projection according to the present invention,

5 to 8 are explanatory views for explaining the operating state of the grouting tip device using the nozzle and the projection according to the present invention.

<Explanation of symbols on main parts of the drawings>

110: inner tube 120: appearance

130: fixing member 140: stopper

150: double acting cylinder

Claims (6)

An inner tube having an upper and lower ends formed in a cylindrical shape of a metallic material, two or more upward nozzles formed on side surfaces thereof, and a plurality of rows of first vortex protrusions formed at regular intervals on an outer surface thereof; The inner tube is formed in a cylindrical shape of a metal material having an upper and lower ends opened therein, and a second vortex protrusion is provided on the inner side so as to be symmetrical with the first vortex protrusion of the inner tube, and one or more rows of the fastener is discharged above the lower end. An upper strainer is formed, and at least one lower strainer is formed so that a final material is discharged from a lower end portion of the upper strainer; A fixing member fixed to the lower end of the inner tube; A stopper having a drainage hole formed at a center thereof and fixedly installed at an inner side of the lower end of the exterior; And A grouting tip device using a nozzle and a projection provided between the fixing member and the stopper, the double strainer cylinder opening and closing the upper strainer or the lower strainer of the exterior and opening and closing the drainage hole of the stopper. The method of claim 1, The upward nozzle of the inner tube, Grouting tip device using a nozzle and a projection, characterized in that the upward nozzle located in the upper row and the upward nozzle located in the lower row are formed to be shifted by a predetermined angle with respect to the inner tube. The method of claim 1, The upward nozzle of the inner tube, Grouting tip device using the nozzle and the projection, characterized in that the upward angle of 5 ~ 85 °. The method of claim 1, The first vortex protrusion of the inner tube and the second vortex protrusion of the appearance are It is formed in a triangular shape, the tip device for grouting using a nozzle and a projection, characterized in that the second vortex projection is disposed between the first vortex projection and the first vortex projection. The method of claim 1, The double acting cylinder, The upper piston is connected to the fixing member, the lower end piston for grouting using a nozzle and a projection, characterized in that the opening and closing member for opening and closing the stopper of the stopper is provided. The method of claim 1, The double acting cylinder, A grouting tip device using a nozzle and a projection, characterized in that a drain passage is formed in the longitudinal edge, and an electromagnetic valve for opening and closing the drain passage is provided.

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