KR20170020130A

KR20170020130A - Packer

Info

Publication number: KR20170020130A
Application number: KR1020150114930A
Authority: KR
Inventors: 임재용
Original assignee: 임재용
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2017-02-22

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a repair fluid injecting packer to be inserted into a crack for injecting a repair fluid when cracks are generated in a concrete structure, and more particularly, A second helical portion, an inflation induction portion, a third helical portion, and a flat portion in this order, and the second helical portion is provided with a sloped surface in the order of the first helical portion, the non-helical portion, The sleeve moves in the direction of the third helical part along the second helical part from the helical non-forming part to gradually increase the diameter to secure the adhesion with the crack, and the sleeve of the part of the inflating inducing part can be further expanded. Lt; / RTI >

Description

PACKER FOR REINFORCING LIQUID INJECTION FOR Crack Repair PACKER

Generally, concrete structures are cracked due to various reasons such as drying shrinkage, freezing, penetration of impurities, and corrosion of steel bars. When such cracks occur, cracks are prevented from further advancing and leakage phenomena The repair fluid is injected so as to be able to stop the repair.

Such conventional technology is disclosed in Korean Patent No. 10-1045664 entitled " Crack repair and maintenance fluid injection device for concrete structures "

The above-mentioned prior art is provided with a fixing plate for adhering and fixing to a cracked portion of a concrete structure, a center plate having an injection port for injecting a repair liquid, a cylinder body having one end screwed to the injection port of the fixing plate, A cylinder cover screwed to cover an opened one end of the main body, a cylinder cover having a predetermined length screwed through the cylinder cover so as to be partially inserted into the cylinder main body, And a piston rod for connecting a pump nozzle for injecting a maintenance fluid to the injection port while forming an injection path passing through the center of the length of the pump, have.

However, in general, a packer is used which is installed on an outer wall of a concrete so that a repair fluid can be injected into a cracked portion rather than the above-mentioned conventional technique of injecting a repair fluid.

Therefore, various techniques for packers for injecting a repair fluid into concrete have been proposed recently. Such a conventional technique is disclosed in Korean Utility Model Registration No. 20-0215988 entitled " Crack repair nozzle for building "

In order to repair the cracks generated on the concrete wall, the prior art described above is used to drill a hole in a cracked wall surface, to fix the nozzle with a drill hole, and then to inject the crack repair material through the nozzle. And the sealing ring, which is bulky by the nozzle, is also divided into two parts. The sealing ring is expanded by the inclined surfaces of the sealing rings, so that the wall surface of the nozzle can be easily fixed and the valve on the outlet side of the nozzle And more particularly, to a crack maintenance nozzle for a building which is simplified in construction and improved in productivity. In particular, a sealing ring is provided between an inlet nozzle body and an outlet nozzle body, and as the nozzle body is tightened, In a crack repair nozzle of a building in which the drill hole of the building is configured to be hermetically sealed, And a valve plate for closing the ball valve and a valve plate for closing the nozzle passage are respectively provided at the tip of the nozzle body at the outlet side of the nozzle body, And a plurality of protrusions for delivering the maintenance material to the outlet are provided.

In addition, according to the prior art, there is a registered utility model No. 20-0423304 entitled " Mechanism for repairing and reinforcing a crack point of a concrete structure "

The conventional art includes a piston head formed to be hermetically reciprocable, a piston part formed at the center so as to be connected to the piston head, a piston part formed at the center of the piston rod so as to communicate with a reinforcing chemical solution injection hole, And a cylinder cover in which a rod is formed so that a piston rod can reciprocate in the center thereof is formed at the rear of the cylinder cover, And a resilient spring disposed behind the piston head of the cylinder lid of the lid portion and the piston head of the piston portion.

In addition, there is a prior art 10-1080724 entitled " Packer for pouring a repair fluid for crack repair of a concrete structure "

In the prior art, a hole is formed along the axial direction on the inside, a nipple for connecting the injector from one end to the outside, a polygonal part for tightening, a circular tube having a smaller diameter than the polygonal part, A collet type sleeve which is slidably engaged with one side of the cylindrical body and which has a plurality of grooves formed on an outer side thereof, and a collet type sleeve which is coupled to the collet type sleeve, A ratchet blade having a serrated shape formed on an outer periphery thereof and having an outer diameter larger than an inner diameter of the injection port is formed so as to be rotatable in the reverse direction when the injection port is engaged with the rubber sleeve, And a ratchet-type nut.

The present invention relates to a packer as described above, which is easier to use than a conventional packer, and can further improve a sealing force with a cracked portion, and a structure can be easily configured to facilitate injection molding, thereby reducing mass production and manufacturing cost It is designed.

Accordingly, in the present invention,

The spiral non-forming portion, the second spiral portion, the expansion inducing portion, the third spiral portion, and the flat portion are sequentially formed on the injection member connected to the repair fluid injector and inserted into the crack portion of the concrete, and the spiral non- The second helical portion forms an inclined surface such that the diameter of the second helical portion is larger than that of the helical non-formed portion. Accordingly, when the injection member is tightened, the sleeve moves along the inclined surface to naturally increase the diameter, The present invention provides a packer for injecting a maintenance liquid.

Further, when the injection member is tightened, the sleeve is brought into close contact with the second spiral portion and the third spiral portion, and the sleeve of the expansion induction portion is expanded And it is an object of the present invention to provide a packer for injecting a maintenance liquid which can further secure a sealing force with a cracked portion.

It is another object of the present invention to provide a repair fluid injecting packer which is formed with a larger diameter than the third spiral portion and forms a step portion at the other end portion of the flat portion, thereby supporting the end portion of the sleeve to prevent the sleeve from coming off.

In order to achieve the above-mentioned object,

A packer inserted into a cracked portion and connected to an injector so that a repair fluid can be injected into a cracked portion through an injector,

A nipple to which an injector is connected to one end and a polygonal part to be fastened are formed on the inside of the injection hole, and a first spiral part, a spiral non-molding part, a second spiral part, An inflation member that sequentially forms an inflation inducing portion, a third helical portion, and a flat portion;

A sleeve coupled to an outer surface of the spiral non-molded portion;

A cap coupled to the first spiral portion;

A backflow prevention member composed of an elastic member to be inserted into the injection hole, and a ball provided at an end of the elastic member;

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And the second helical portion is formed with an inclined surface such that the diameter of the second helical portion is larger than that of the helical non-formed portion.

As described above, the repair fluid injecting packer according to the present invention is characterized in that the first spiral part, the spiral non-forming part, the second spiral part, the expansion inducing part, the third spiral part and the flat part are sequentially formed on the injection member formed integrally, The helical portion is configured to form an inclined surface such that the diameter becomes larger than that of the expansion inducing portion. When the injection member is tightened, the sleeve coupled to the outer surface of the injection member moves along the inclined surface and the diameter can be naturally contacted with the crack portion. It is characterized by its simple structure and easy mass production due to excellent injection molding.

As the sleeve rises along the second spiral part, a thread is formed naturally on the inner side of the sleeve by the tightening force and opposite to the second spiral part, so that the sleeve is located in the third spiral part, As the sleeve is further expanded in the portion of the expansion inducing portion between the spiral portions, the adhesion with the cracked portion can be more completely ensured, and the flow of the maintenance fluid can be completely blocked.

Further, since the flat portion has a larger diameter than the third helical portion, the step portion is formed at the other end portion of the flat portion, so that the sleeve is prevented from coming out of the step portion.

1 is a perspective view of a packer according to the present invention;
2 is an exploded perspective view of a packer according to the present invention;
Figure 3 is a cross-sectional view of the packer according to the invention
Figure 4 is an illustration of a packer according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 to 3, a packer P, which is inserted into a cracked portion and connected to an injector so that a repair fluid can be injected into a cracked portion of a concrete structure according to the present invention, A cap 30 and an opening and closing member provided on the injection member 10. The injection member 10 is inserted into the injection member 10,

First, the injection member 10 is inserted into a cracked portion. The injection hole 11 is formed at an inner side of the injection hole 10 for injecting a repair fluid along the axial direction. A non-spiral non-forming portion 15, a second helical portion 16, and an inflation inducing portion 17 (not shown) are formed at the other end of the nipple 12, The third spiral portion 18, and the flat portion 19 are sequentially formed.

The injection member 10 has a nipple 12 to which the injector is connected and a nipple 12 to which the injector can be coupled at one end of the injection member 10, A polygonal portion 13 is formed on the inner side (in the other end direction) so that the injection member 10 is rotated using a tool such as a wrench so that a sleeve 20 described later can be brought into close contact with a cracked portion.

The first helical part 14 is provided at the other end of the injection member 10 and the helical non-forming part 15 is sequentially injected from the first helical part 14 toward the one end of the injection member 10. The second spiral portion 16, the expansion inducing portion 17, the third spiral portion 18, and the flat portion 19 are formed.

First, the helical non-forming portion 15 is extended from the first helical portion 14 so that no thread is formed on the outer surface, and the sleeve 20 can be positioned.

And a second helical portion 16 extending to the helical non-forming portion 15 and having no thread on the outer surface thereof and extending to the inclined introduction portion 161 and having a thread formed on the outer surface thereof . The inclined introduction portion 161 is formed to be larger than the diameter of the helical non-forming portion 15 and the second helical portion 16 is extended to the inclined introduction portion 161, The inclined surface 163 is formed such that the diameter gradually increases.

The inclined surface 163 is not formed on the second helical part 16 formed with the inclined surface 163 and the diameter of the first helical part 14 and the helical non- And a third spiral part 18 extending from the expansion inducing part 17 is provided.

A flat portion 19 having a larger diameter c than the diameter b of the third helical portion 18 is provided on the third helical portion 18, And is connected to the polygonal part (13) to constitute the injection member (10) of one body.

At this time, a step portion 193 is provided at the other end of the flat portion 19 to support the sleeve 20.

Generally, when the injection member 10 is coupled to the cracked portion and injection of the repair liquid is completed, the end portion of the injection member 10 is cut out and then the finish material is applied to repair the cracked portion of the concrete structure. In order to more easily cut the end of the injection member 10 at this time, the flat portion 19 is provided with a cutting portion 191 having a smaller diameter, so that the user can easily insert the maintenance member 10 In the present embodiment.

When the injection member 10 is inserted into the cracked region, the gap between the injection member 10 and the cracked portion is sealed to fix the injection member 10 to the injection member 10, A sleeve 20 is provided.

The sleeve 20 is made of a soft material such as rubber or silicone and can be easily extended. As described above, the sleeve 20 is coupled to the outer surface of the spiral non-molding portion 15.

In this case, the sleeve 20 is formed with a hollow 21 so as to be coupled to the spiral non-forming portion 15, and the inner diameter of the hollow 21 is the same as the diameter of the non-spiral non- 20 can be coupled to the outer surface of the non-spiral portion 15.

One end of the hollow portion 21 is provided with an enlarged portion 211 which is gradually enlarged in inner diameter so that the hollow portion 21 can be closely attached to a portion of the inclined introduction portion 161 and the second helical portion 16 of the injection member 10 .

Further, since the sleeve 20 is made of a soft material such as rubber, it is naturally adhered to the second helical part 16 to form the same thread as that of the second helical part 16, without forming a thread inside the sleeve 20 .

Further, the process of inserting the injection member 10 into the cracked region will be described in more detail with reference to FIG.

First, the injection member 10 is inserted into the cracked portion, and then the polygonal portion 13 is rotated through a tightening mechanism such as a separate wrench or the like to rotate the injection member 10. As a result of this rotation, the sleeve 20 naturally follows the rotation of the second spiral part 16 to ride on the inclined introduction part 161 and the second spiral part 16 from the spiral non-molding part 15, 18). More specifically, the outer surface of the sleeve 20 comes into close contact with the inner surface of the cracked portion and is not moved by frictional force. When the injection member 10 rotates, the second helical portion 16 contacts the inner surface of the sleeve 20 By actually forming and rotating the thread along the inner side, the sleeve 20 does not move and the injection member 10 moves to the inside of the cracked region, and as a result, the sleeve 20 reaches the second spiral portion 16 The expansion inducing portion 17, and the third spiral portion 18. [0031] As shown in FIG.

The one end of the sleeve 20 is caught by the step portion 193 of the flat portion 19 so that the injection member 10 is no longer moved to the inside of the cracked portion, The hollow portion 21 of the sleeve 20 is enlarged along the sloped surface 163 formed in the sleeve 16 so that the outer surface of the sleeve 20 can be firmly adhered to the cracked portion.

At this time, when the injection member 10 is further rotated, the sleeve 20 is fixed by the step portion 193, and the third spiral portion of the thread formed in the hollow 21 of the sleeve 20 18 is loosened by the step 193 and the other end of the sleeve 20 which is in close contact with the second spiral portion 16 is rotated by a thread so that the other end of the sleeve 20 The sleeve 20 is gradually expanded toward the third spiral portion 18 and the sleeve 20 located in the expansion inducing portion 17 provided between the second spiral portion 16 and the third spiral portion 18 is further expanded It is possible to further secure the adhesion with the cracked portion and to prevent the injection member 10 from dropping out depending on the injection pressure of the repair fluid.

1 to 3, the cap 30 is further coupled to the first spiral portion 14, and the injection hole 11 is formed at the other end of the injection member 10, (40) for preventing backflow of the maintenance liquid when the maintenance liquid is injected.

The backflow preventing member 40 is provided at the other end of the injection hole 11. More specifically, the injection hole 11 formed in the injection member 10 forms a stopping protrusion 111 at one side And an elastic member 41 and a ball 43 for preventing the backflow of the remedial fluid are attached to the injection hole 11 sequentially from the other side so as to be caught by the engagement protrusion 111 . Therefore, when the repair liquid is injected, the ball 43 compresses the elastic member 41 to form the open state of the injection hole 11, and when the repair liquid moves in the reverse direction, So that the reverse flow of the remedial fluid can be controlled.

A cap 30 is provided at an end of the injection member 10 to prevent the backflow preventing member 40 from being separated from the first spiral portion 14. The cap 30 is provided with an injection hole 11 are formed in the upper surface of the main body 11 so that the inflow of the maintenance liquid can be maintained.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those precise embodiments, and various modifications, alterations, and substitutions can be made by those skilled in the art Such modifications, alterations, and substitutions are to be construed as within the scope of the present invention.

P: Packer 10: injection member
11: injection hole 111:
12: Nipple 13:
14: first spiral part 15: spiral non-
16: second spiral part 161: inclined introduction part
163: inclined surface 17:
18: third spiral part 19: flat part
191: Cutting section 193:
20: Sleeve 21: hollow
211: extension part 30: cap
31: communication hole 40: backflow prevention member
41: elastic member 43: ball

Claims

A packer inserted into a cracked portion and connected to an injector so that a repair fluid can be injected into a cracked portion through an injector,
A nipple to which an injector is connected to one end and a polygonal part to be fastened are formed on the inside of the injection hole, and a first spiral part, a spiral non-molding part, a second spiral part, An inflation member that sequentially forms an inflation inducing portion, a third helical portion, and a flat portion;
A sleeve coupled to an outer surface of the spiral non-molded portion;
A cap coupled to the first spiral portion;
A backflow prevention member composed of an elastic member to be inserted into the injection hole, and a ball provided at an end of the elastic member;
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Wherein the second helical portion is formed with an inclined surface such that the diameter of the helical portion is larger than that of the helical non-forming portion.

The method according to claim 1,
Wherein the expansion inducing portion and the third helical portion are larger in diameter than the first helical portion.

3. The method according to claim 1 or 2,
The flat portion
Wherein a diameter of the third helical portion is larger than a diameter of the third helical portion to form a stepped portion at the other end of the flat portion.

The method of claim 3,
The sleeve
Wherein when the injection member is inserted into the crack and the polygonal part of the injection member is tightened, the injection member is moved in the direction of the third screw part along the second screw part to increase the diameter,
The other end of the sleeve is supported by the step portion to limit the movement of the sleeve. One end of the sleeve is pushed toward the third spiral portion by the second spiral portion, and the expansion induction portion between the second spiral portion and the third spiral portion And the sleeve of the part is further expanded.