JP2012193516A - Liquid injection jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical liquid injection jig which allows for improved work efficiency and reliable injection.SOLUTION: A chemical liquid injection gun 1 which is supplied with a chemical liquid and air comprises a gun body 11, a cylindrical tip part 12 which is disposed at the tip of the gun body 11 and equipped with an injection nozzle 13 at the tip, and an angle regulating member 20 which is disposed at the cylindrical tip part 12. The angle regulating member 20 has an inclined plate 22 with a surface direction at a prescribed inclination angle relative to the direction of the injection axis X of the injection nozzle 13, so that an acid liquid is injected from the surface of a spraying material under pressure.

Description

  The present invention relates to a liquid injection jig used when, for example, a spraying material or the like adhering to the surface of a base material is removed by chemical reaction by chemical injection.

Conventionally, as a method for removing asbestos-containing materials such as sprayed asbestos materials and asbestos-containing sprayed rock wool, it is possible to remove residual deposits mainly composed of cement components using, for example, a brush after roughing with a tool such as a keren rod. The work of shaving off and polishing is being carried out.
Moreover, the removal method which improved work efficiency by using an acidic liquid with respect to a spraying material is also known (for example, refer patent document 1). The spraying of chemicals during such spraying material removal work is generally carried out using an airless sprayer. To the interface between the surface and the ground surface (concrete or steel frame). And when this chemical | medical solution reaches | attains an interface, the adhesive force of a spraying material is weakened and it can be made to peel with respect to a base surface.

JP-A-8-199832

  However, when spraying a chemical solution from the surface of the spray material as in Patent Document 1, it is necessary to weaken the entire asbestos spray layer, which increases the amount of the chemical solution required for the removal operation and costs. Therefore, a small hole is drilled in the spraying surface to inject the chemical solution, or the needle is injected into the spraying layer with an injection tool having a needle shape. If the injection angle at this time is an angle that is perpendicular to the spraying surface, the injected chemical solution flows backward from the hole that was previously opened, and sufficient infiltration cannot be performed, resulting in a lot of waste in the injected drug, Further, in the case of injecting from an oblique direction, there is a problem that the angle is not constant and stable injection cannot be performed, and there is room for improvement in that respect.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a liquid injection jig capable of improving work efficiency and performing reliable injection.

  In order to achieve the above object, the liquid injection jig according to the present invention is a liquid injection jig for injecting a chemical liquid by applying pressure from the surface of the spray material, and supplying the chemical liquid and air, A jig body having an injection nozzle mounted on the tip thereof, and an angle regulating plate provided on the jig body, the angle regulating plate having a predetermined inclination angle with respect to the ejection axis direction of the ejection nozzle It is characterized by being provided by.

In the present invention, by injecting the pressurized liquid from the spray nozzle in a state where the surface of the angle regulating plate is in contact with the surface of the spray material, the liquid is injected into the spray material. Can penetrate. At this time, the incident angle of the liquid sprayed from the spray nozzle with respect to the surface of the spray material can be set to a predetermined inclination angle with respect to the surface, and the injection direction into the spray material is also oblique to the surface. Direction. Therefore, it is possible to prevent the liquid from flowing backward from the injection hole opened at the time of injection, and more reliable and efficient permeation can be performed.
Moreover, the posture (inclination angle) of the jig main body (injection nozzle) with respect to the surface can be made constant by merely bringing the angle regulating plate into contact with the surface of the spray material. Therefore, it becomes possible to give reproducibility to the injection angle of the injection nozzle, the variation of the injection angle by a person can be suppressed, and the same posture can always be maintained and stable injection to the spray material can be performed.

  In particular, when the spray material is an asbestos-containing material that is sprayed on the surface of the substrate, a chemical solution such as an acidic solution is used as the liquid, and the chemical solution injected at a high pressure by the liquid injection jig is sprayed onto the substrate. By injecting into the interface with the adhesive material, the chemical solution will permeate along the interface, and the cement and organic matter in the adhering part on the base material side of the sbestos-containing material will be decomposed by a chemical reaction by acid. Dissolve, and asbestos-containing material can be peeled off from the substrate and allowed to fall naturally.

In addition, since the liquid is jetted from the surface of the spray material at a high pressure, the drilling process is not necessary as compared with the conventional method of punching and then injecting, so that the work efficiency is improved. be able to.
Moreover, in the liquid injection jig of the present invention, compared to a case where a needle-like nozzle is stabbed into a spraying material and sprayed, the construction work is not troublesome, and the accuracy of the spraying angle is increased and spraying is performed. There is an advantage that clogging of the nozzle tip that occurs when piercing the material can be prevented.

In the liquid injection jig according to the present invention, it is preferable that the angle of inclination of the angle regulating plate can be arbitrarily changed in a state of being mounted on the jig body.
In the present invention, the angle regulating plate is changed to an arbitrary inclination angle corresponding to the construction conditions such as the material of the spraying material, the thickness dimension, the position of the construction region, etc., and the direction of the spray nozzle relative to the surface of the spraying material is adjusted. And can be injected. In addition, since the angle can be changed while it is mounted on the jig body, it is not necessary to attach or detach the jig body, and the angle of the angle regulating plate can be quickly changed even when the shape of the applied surface is changed. be able to.

In the liquid injection jig according to the present invention, it is more preferable that the angle regulating plate is provided so as to be relatively movable in the injection axis direction with respect to the injection nozzle.
In the present invention, since the distance in the injection axis direction between the angle restricting plate and the injection nozzle can be changed, for example, by setting the tip of the injection nozzle to a position that protrudes from the angle restricting plate, the surface of the spray material It is possible to deal with uneven surfaces and irregular surfaces.

Moreover, in the liquid injection | pouring jig | tool which concerns on this invention, it is preferable that the angle control board is provided with respect to a jig | tool main body so that attachment or detachment is possible.
In this case, it is possible to replace the jig body with an angle regulating plate having a different shape, so that the surface shape of the spraying material to be constructed and the parts when the construction becomes a corner portion It is possible to install by attaching an angle regulating plate having a shape matched to the shape.
Further, even if the angle restricting plate is damaged or soiled during construction, it can be dealt with by replacing it with a new angle restricting plate.

  According to the liquid injection jig of the present invention, by injecting the liquid from the injection nozzle by bringing the angle regulating plate into contact with the surface of the spray material, the injection angle becomes oblique and the backflow of the injected liquid can be suppressed. The liquid to be injected is not wasted, and reliable injection can be performed at low cost. Further, since the injection angle is always a constant angle, there is an advantage that the working efficiency can be improved.

It is a schematic diagram which shows the outline | summary of the removal method of the spraying material using the chemical injection gun by the 1st Embodiment of this invention. It is the figure which looked at the spraying material shown in FIG. 1 from the surface side. It is a side view which shows the structure of a chemical injection gun. It is a longitudinal cross-sectional view which shows the structure of an angle control member. It is the figure which looked at the inclination board shown in FIG. 4 from the surface side. It is a longitudinal cross-sectional view which shows the use condition of the chemical injection gun with respect to a spraying material. It is a side view which shows the structure of the angle adjustment member of the chemical injection gun by 2nd Embodiment. It is a top view of the angle adjustment member shown in FIG. It is the figure which looked at the inclined board shown in FIG. 8 from the surface side. It is a side view which shows the state which inclined the inclination board shown in FIG. 7 15 degree | times. (A), The figure is a side view which shows the state which inclined the inclination board shown in FIG. 7 15 degree | times.

  Hereinafter, a liquid injection jig according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, a chemical injection gun 1 (liquid injection jig) according to the first embodiment is a gun-type jig that can be held by a pressure injection type, and is made of reinforced concrete such as a building. The slab is used for construction to remove the spray material 3 made of an asbestos-containing material coated on the surface 2a of the base material 2 such as an H-shaped steel material that supports the slab from below.
Here, examples of the spray material 3 covered with the base material 2 include a spray asbestos material and an asbestos-containing spray rock wool, and the spray thickness is about 25 to 60 mm in the present embodiment. Further, as shown in FIG. 2, the spray material 3 has a mesh shape extending vertically and horizontally to reach the surface 2 a of the base material 2 (boundary surface T with the spray material 3) before the start of construction by the chemical injection gun 1. The cut 3A is provided.

  Specifically, in the chemical liquid injection gun 1 according to the present embodiment, a high-pressure acidic liquid (liquid) is injected from the surface 3a of the spray material 3 having the cut 3A, and is further infiltrated and sprayed over the entire boundary surface T. It is applied to the construction in which the spraying material 3 is naturally dropped while being removed from the base material 2 by causing the boundary surface T of the material 3 to react with the acidic liquid and dissolving.

The chemical liquid injection gun 1 shown in FIG. 1 is supplied with an acidic liquid pressurized by an acidic liquid supply mechanism 4 and is injected from an injection nozzle 13 at the tip of the gun. The acidic liquid supply mechanism 4 includes a chemical tank 41 that stores the acidic liquid, a liquid feed pipe 42 that connects the chemical tank 41 and the chemical injection gun 1, and a pressure feed pump 43 that is provided in the middle of the liquid feed pipe 42. And an air pump 44 for supplying air set to a predetermined pressure by the air hose to the chemical liquid injection gun 1.
In the acidic liquid supply mechanism 4, the injection pressure, the injection amount, the injection time, and the like are appropriately controlled by a control unit (not shown).

  The acidic liquid in the chemical tank 41 is pressurized by the pressure feed pump 43 and sent to the chemical liquid injection gun 1 and is injected from the injection nozzle 13 at a set injection pressure mixed with air. The injection pressure at this time is a pressure that allows pressure to penetrate from the surface 3a of the spray material 3 by injection, and is set in the range of 1 to 180 MPa, for example.

As shown in FIG. 3, the chemical injection gun 1 includes a cylindrical gun main body 11 to which air is supplied, a front end cylindrical portion 12 provided on the same axis on the front end side in the axial direction of the gun main body 11, and a front end cylindrical portion 12. The spray nozzle 13 provided at the tip of the gun, the injection operation part 14 provided on the rear end side of the gun body 11, and the tip cylinder part 12 are detachably provided and the acid liquid spray angle is set to a predetermined angle. And an angle restricting member 20 for the purpose.
Further, the chemical injection gun 1 is provided with a chemical supply valve 15 at the rear end of the distal end cylinder portion 12, and an injection opening / closing valve 16 is interposed between the chemical supply valve 15 and the gun body 11.

  Here, the gun body 11, the distal end cylindrical portion 12, and the injection nozzle 13 are arranged with their central axes positioned on a common axis. In the present embodiment, this common axis is referred to as the injection axis X, and in the chemical injection gun 1, the injection nozzle 13 side along the injection axis X is referred to as the front end side and the front side, and the gun body 11 side is referred to as the rear side. Further, the surface direction orthogonal to the injection axis X is defined as 0 degree, and the direction of rotation in the direction in which the upper portion of the surface projects forward (clockwise rotation direction in FIG. 3) is referred to as the inclination direction F, and the surface direction. Is an angle of rotation in the tilt direction F from 0 degrees is referred to as a tilt angle θ. Further, in FIG. 3, the direction from the front side to the back side is referred to as the left-right direction.

  The gun body 11 has a first flow passage 11a extending in the direction of the injection axis X inside, and air sent by an air pump 44 (see FIG. 1) is supplied to the rear end portion 11b.

The distal end cylinder portion 12 is provided with a second flow path 12a that extends in the direction of the injection axis X and communicates with the injection nozzle 13, and a chemical solution supply valve 15 is provided in the second flow path 12a. In the chemical liquid supply valve 15, the supply amount of the acidic liquid supplied from the acidic liquid supply mechanism 4 shown in FIG. 1 to the second flow path 12a is controlled by the control unit described above.
Further, a male screw 12b is formed on the outer periphery of the tip tube portion 12, and a male screw 21a of a first engagement tube portion 21 of the angle regulating member 20 described later is screwed into the male screw 12b.

  The diameter of the injection nozzle 13 can be selected within a range of, for example, 0.1 to 2.0 mm in diameter according to physical properties such as the hardness of the spray material 3. In a general wet sprayed asbestos material, the nozzle diameter is preferably about 0.5 mm in diameter.

  The injection operation unit 14 includes a grip-type gripping portion 14a fitted on the gun body 11 and a switch 14b provided on the gripping portion 14a. By operating this switch 14b, the chemical liquid supply valve 15 and the injection opening / closing valve 16 are appropriately opened and closed, and the ejection of the acidic liquid can be turned on and off.

  The injection opening / closing valve 16 can keep the injection amount of the acidic liquid constant by controlling the opening / closing time by the control unit. Even if the injection is started by turning on the switch 14b of the injection operation unit 14, the injection opening / closing valve 16 is in advance. The injection is stopped when the set time or flow rate is reached. The injection opening / closing valve 16 may be an air type or an electromagnetic type. However, in the case of an unfavorable environment such as a spraying asbestos removal area using the spraying material 3 as in the present embodiment, A typical air type is preferred.

As shown in FIG. 4, the angle regulating member 20 has a cylindrical first engagement cylinder portion 21 that engages with the outer periphery of the distal end cylinder portion 12, and a front end of the first engagement cylinder portion 21 in this engaged state. It comprises an inclined plate 22 (angle regulating plate) fixed at a predetermined inclination angle θ.
The first engagement cylinder portion 21 is provided with a female screw 21a that can be screwed to the male screw 12b of the front end cylinder portion 12 on the inner peripheral surface thereof, and a screw hole 21b that penetrates the cylinder wall is formed in the rear portion. Yes. The tip portion 21c of the inclined plate 22 in the first engagement cylinder portion 21 is inclined so as to coincide with the inclination angle θ of the inclined plate 22 to be attached. The screw hole 21b can be screwed with a fixing screw 23 (see FIG. 3) from the outer peripheral side of the first engagement tube portion 21. When the screw tip 23 a is locked to the outer peripheral surface of the tip tube portion 12, the first engagement tube portion 21 is fixed to the tip tube portion 12.

  As shown in FIG. 5, the inclined plate 22 is a rectangular flat plate member, and an opening 22 c having the same diameter as the inner diameter of the distal end portion 21 c of the first engagement cylinder portion 21 is provided in the center in the surface direction. ing. As shown in FIG. 4, the inclined plate 22 is fixed to the distal end portion 21c with a predetermined inclination angle θ (here, 30 degrees) in a state where the opening 22c and the opening of the distal end portion 21c are combined. .

  In such an angle restricting member 20, the angle restricting member 20 can be connected to the distal end cylindrical portion 12 by screwing the female screw 21 a of the first engaging tubular portion 21 with the male screw 12 b of the distal end cylindrical portion 12. By changing the stop position in the injection axis X direction by screwing at this time, the relative position in the axial direction X of the injection nozzle 13 and the inclined plate 22 is changed as shown by the two-dot chain line in FIGS. can do. That is, the nozzle tip 13a can be protruded from the opening 22c of the inclined plate 22 by the screwing depth, so that it is possible to cope with the surface 3a of the spray material 3 having an uneven surface or an irregular surface. Can do.

Next, a method of removing the spray material 3 attached to the base material 2 using the above-described chemical liquid injection gun 1 and an operation of the chemical liquid injection gun 1 will be described based on the drawings.
As shown in FIG. 6, when removing the spray material 3 from the surface 2a of the base material 2, first, the surface 22a of the inclined plate 22 is brought into contact with the surface 3a of the spray material 3 provided with the cut 3A. . The direction of the injection nozzle 13 (injection axis X direction) is inclined with respect to the surface 3a by the inclination angle θ of the inclined plate 22 (see FIG. 4).

  Then, as shown in FIG. 1, the acidic liquid fed by the pressure feed pump 43 of the acidic liquid supply mechanism 4 is jetted from the jet nozzle 13 together with the air supplied by the air pump 44 by operating the switch 14 b of the injection operation unit 14. Thus, the acidic liquid can be injected into the inside of the spraying material 3 and penetrated. At this time, the incident angle of the acidic liquid sprayed from the spray nozzle 13 with respect to the surface 3a of the spraying material 3 can be set to a predetermined inclination angle θ with respect to the surface 3a. Is also oblique to the surface 3a. Therefore, it is possible to suppress the backflow of the acidic liquid from the injection hole opened at the time of injection, so that more reliable and efficient penetration can be performed.

  Moreover, the pressurized acidic liquid injected from the chemical injection gun 1 is appropriately or continuously controlled by an unillustrated control unit, and the injection time, the injection amount, and the like are appropriately controlled.

  Here, examples of the acidic liquid injected into the spray material 3 include mineral acids such as hydrochloric acid, and organic acid aqueous solutions such as acetic acid and citric acid. This acidic liquid has a function of reacting with and dissolving the spray material 3 made of an asbestos-containing material, and injecting in the vicinity of the boundary surface T causes separation and separation of the base material 2. For example, the PH value is adjusted to about 1 to 4 according to conditions such as the material of the spraying material 3, the thickness of the spraying material, the material of the base material 2, and the like.

  Then, the acidic liquid that is injected into the spraying material 3 from the spray nozzle 13 and penetrates reaches the surface 2a (boundary surface T) of the base 2, and further spreads around the boundary surface T. Thus, by allowing the acidic liquid to permeate the boundary surface T, the cement and the organic matter in the adhering portion on the base material 2 side of the spray material 3 are decomposed and dissolved by a chemical reaction with an acid. Thereby, the block-shaped spray material 3 partitioned by the cut 3A can be peeled off from the base material 2 and can be dropped naturally.

  In the angle restricting member 20 configured as described above, the jig main body (the gun main body 11, the tip cylindrical portion 12, the injection nozzle 13) with respect to the surface 3a can be obtained simply by bringing the inclined plate 22 into contact with the surface 3a of the spray material 3. Etc.) (inclination angle θ) can be made constant. Therefore, it becomes possible to give reproducibility to the injection angle of the injection nozzle 13, it is possible to suppress variations in the injection angle by humans, and always maintain the same posture and perform stable injection to the spray material 3. it can.

  Note that, in the construction where the spray material 3 needs to be prevented from being scattered like the asbestos-containing material as in the present embodiment, before spraying the spray material 3 with the chemical liquid injection gun 1, the spray material 3 is blown in advance. You may make it prevent the scattering at the time of the injection by pressurization by moistening the surface 3a of the attachment material 3 with a wetting agent.

  Moreover, the spray position by the chemical injection gun 1 may be any position as long as it is the surface 3a of the spray material 3, but the cut 3A that has been constructed extends from the surface 3a of the spray material 3 to the surface 2a (boundary) of the substrate 2. Since it communicates to the surface T), it is possible to infiltrate the entire boundary surface T more reliably by injecting the acidic liquid from the injection nozzle 13 into the cut 3A.

Moreover, since it becomes the method of injecting acidic liquid from the surface 3a of the spraying material 3 at high pressure, since the drilling process becomes unnecessary compared with the method of inject | pouring after previously drilling like the past, work efficiency is improved. Improvements can be made.
Moreover, in the chemical injection gun 1, compared with the case where the needle-like nozzle is stabbed into the spraying material and sprayed, the construction work is not troublesome, the accuracy of the spraying angle is increased, and the spraying material 3 is applied. There is an advantage that it is possible to prevent clogging of the nozzle tip 13a which occurs when piercing.

  Further, the angle regulating member 20 is provided so as to be detachable with respect to the distal end tubular portion 12 and can be replaced with an inclined plate 22 having a different shape with respect to the distal end tubular portion 12, so When the surface shape of the attachment material 3 or the construction is a corner portion, the inclined plate 22 having a shape matched to those portions can be attached for construction. Further, even if the inclined plate 22 is damaged or soiled during construction, it can be dealt with by replacing it with a new inclined plate 22.

  As described above, in the liquid injection jig according to the first embodiment, the injection angle is inclined by injecting the acidic liquid from the injection nozzle 13 by bringing the inclined plate 22 into contact with the surface 3a of the spray material 3. Thus, since the back flow of the injected acidic liquid can be suppressed, there is no waste of the injected acidic liquid, and reliable injection can be performed at low cost. Further, since the injection angle is always a constant angle, there is an advantage that the working efficiency can be improved.

  Next, other embodiments and modifications of the liquid injection jig according to the present invention will be described with reference to the accompanying drawings. However, the same or similar members and parts as those in the first embodiment are the same. A description will be omitted using reference numerals, and a configuration different from that of the first embodiment will be described.

(Second Embodiment)
As shown in FIG. 7 and FIG. 8, the chemical injection gun 1A (liquid injection jig) according to the second embodiment is replaced with an angle restricting member 20 (see FIG. 4) according to the first embodiment. The angle adjustment member 30 including the inclined plate 33 that can be angle-adjusted with respect to the injection nozzle 13 while being connected to the cylinder portion 12 is provided. Here, since the configurations of the distal end cylindrical portion 12 and the injection nozzle 13 are the same as those in the first embodiment described above, detailed description thereof is omitted here.

  Specifically, the angle adjustment member 30 includes a second engagement cylinder part 31 that engages with the outer periphery of the distal end cylinder part 12 and a pair of angle change brackets that are connected to the second engagement cylinder part 31 so that the angle can be changed. 32, 32 and an inclined plate 33 (angle regulating plate) fixed to the angle changing bracket 32 by a plurality of bolts 34, 34,...

  The 2nd engagement cylinder part 31 comprises the cylinder shape of the internal diameter dimension which can be externally fitted to the front-end | tip cylinder part 12, and has the screw hole 31a which penetrates a cylinder wall in a rear side part. The screw hole 31 a can be screwed with a fixing screw 35 from the outer peripheral side of the second engagement cylinder portion 31. By tightening the fixing screw 35 in a state in which the second engaging cylinder portion 31 is fitted in the distal end cylindrical portion 12, the distal end 35 a of the fixing screw 35 is locked to the outer peripheral surface of the distal end cylindrical portion 12. The two engaging cylinder portions 31 are fixed to the distal end cylinder portion 12.

The angle changing brackets 32 are connected to the back surface 33b of the inclined plate 33 with a certain distance from each other, and are provided on both the left and right sides of the second engagement cylinder portion 31 so as to be rotatable about the left and right axis. That is, the angle changing bracket 32 is fixed to the second engagement cylinder portion 31 by two fixing screws 36A and 36B, respectively. The fixing positions of the fixing screws 36 </ b> A and 36 </ b> B are arranged at a predetermined interval from each other. The angle changing bracket 32 is provided with a fixing hole 32A for inserting the first fixing screw 36A on the rear side and a long hole 32B for inserting the second fixing screw 36B on the front side. Further, as shown in FIG. 7, in a state where the inclination angle of the inclined plate 33 is 0 degree, a pair of the fixing screws 36 </ b> A and 36 </ b> B having the same interval as the pair of fixing screws 36 </ b> A and 36 </ b> B at a position 45 degrees obliquely above the injection axis X Screw holes 32C and 32D are provided.
The long hole 32B extends along an arc centered on the fixed hole 32A. That is, the angle changing bracket 32 is rotatable in the circumferential direction F within the range of the long hole 32B around the fixed hole 32A.

  As shown in FIG. 9, the inclined plate 33 is provided with an opening 33c for the injection nozzle 13 at the center thereof. The opening 33c changes the angle of the inclined plate 33 so that the injection nozzle 13 is always in the opening. It has a vertically long shape so as to be located at

  In the angle adjustment member 30 of the present embodiment configured as described above, the inclination angle θ can be changed in a range from 0 degrees to 45 degrees. For example, FIG. 10 shows a state where the inclined plate 33 is inclined by 15 degrees.

FIGS. 11A and 11B show a state in which the inclination angle θ of the inclined plate 33 is inclined to 45 degrees.
In FIG. 11A, the inclination angle θ of the inclined plate 33 is inclined at 45 degrees in a state where the angle adjustment bracket 32 is fixed to the second engagement cylinder portion 31 using the fixing hole 32A and the elongated hole 32B. When this occurs, the distance D between the contact surface 33a of the inclined plate 33 and the tip 13a of the injection nozzle 13 increases. That is, when the inclined plate 33 is brought into contact with the surface 3a of the spray material 3, the distance between the surface 3a and the tip 13a of the injection nozzle 13 is also increased.

  Therefore, as shown in FIG. 11B, the angle changing bracket 32 is inclined together with the angle changing bracket 32 by changing the fixing positions of the first fixing screw 36A and the second fixing screw 36B to the screw holes 32C and 32D. The plate 33 moves to the rear side position in the axial direction X with respect to the second engagement cylinder portion 31, and the distance d between the tip 13a of the injection nozzle 13 and the inclined plate 33 can be reduced.

  Thus, the angle adjusting member 30 is provided so as to be relatively movable in the injection axis X direction with respect to the injection nozzle 13, and the distance in the injection axis X direction between the inclined plate 33 and the injection nozzle 13 can be changed. Therefore, for example, by setting the tip 13a of the injection nozzle 13 at a position that protrudes from the inclined plate 33, the surface 3a of the spray material 3 can be made to correspond to an uneven surface, an irregular surface, or the like.

In the angle adjusting member 30 according to the second embodiment, since the inclination angle θ of the inclined plate 33 can be arbitrarily changed in a state where it is mounted on the distal end cylindrical portion 12, the material, thickness dimensions, The inclined plate 33 can be changed to an arbitrary inclination angle θ corresponding to the construction conditions such as the position of the construction region, and the jet nozzle 13 can be jetted by adjusting the direction of the jet nozzle 13 relative to the surface 3a of the spray material 3.
In addition, since the angle of the inclined plate 33 can be changed with the tip tube portion 12 being mounted, no attachment / detachment work to the tip tube portion 12 is required, and the shape change of the surface 3a of the spray material 3 to be applied is not required. However, the angle of the inclined plate 33 can be changed quickly.

As mentioned above, although embodiment of the liquid injection | pouring jig | tool by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning.
For example, in the present embodiment, the spray material 3 is an asbestos-containing material, and the liquid sprayed from the chemical injection guns 1 and 1A is also an acidic liquid. However, the present invention is not limited to this. The spray material which consists of a material may be sufficient, and another chemical | medical material may be used.

Further, in the first embodiment, the inclination angle θ of the inclined plate 22 is set to 30 degrees, and in the second embodiment, the inclination angle θ of the inclined plate 33 is set to a range of 0 to 45 degrees. It is possible to set appropriately according to the construction conditions.
Furthermore, the mechanism of the angle adjusting member 30 according to the second embodiment is not limited to this. In short, it is only necessary that the inclination angle of the inclined plate 33 can be changed in a state where it is mounted on the jig body of the chemical injection gun 1A.

And in this Embodiment, although the angle control member 20 and the angle adjustment member 30 are engaged with the front-end | tip cylindrical part 12, the other part of a jig | tool main body may be sufficient.
Also, the configuration of the jig main body (the gun main body 11, the tip tube portion 12, the injection operation unit 14, etc.) and the configuration of the acidic liquid supply mechanism 4 for supplying an acidic liquid (chemical liquid) or air to the chemical liquid injection guns 1 and 1A. The present embodiment is not limited to this embodiment.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described embodiments may be appropriately combined.

1, 1A chemical injection gun (liquid injection jig)
DESCRIPTION OF SYMBOLS 2 Base material 2a Surface 3 Spray material 3a Surface 4 Acidic liquid supply mechanism 11 Gun main body 12 Tip cylinder part 12b Male screw 13 Injection nozzle 13a Tip 14 Injection operation part 15 Chemical supply valve 16 Injection opening / closing valve 20 Angle control member 21 First engagement Joint tube portion 21a Female screw 22 Inclined plate (angle regulating plate)
30 Angle adjusting member 31 Second engaging member 32, 32A, 32B Angle changing bracket 33 Inclined plate (angle regulating plate)
F Inclination direction T Boundary surface X Injection axis θ Inclination angle

Claims (4)

A liquid injection jig for injecting chemical liquid by applying pressure from the surface of the spray material,
While supplying a chemical solution and air, a jig body in which an injection nozzle is mounted at the tip,
An angle regulating plate provided on the jig body;
With
The liquid injection jig according to claim 1, wherein the angle regulating plate is provided with a surface direction at a predetermined inclination angle with respect to an injection axis direction of the injection nozzle.   The liquid injection jig according to claim 1, wherein the angle of inclination of the angle regulating plate can be arbitrarily changed in a state where the angle regulating plate is mounted on the jig body.   The liquid injection jig according to claim 1, wherein the angle restricting plate is provided so as to be relatively movable in the direction of the injection axis with respect to the injection nozzle.   The liquid injection jig according to any one of claims 1 to 3, wherein the angle regulating plate is detachably provided to the jig body.

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