JPH108705A - Effective using system or raw material in case of execution of waterproofing membrane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately spray a waterproofing membrane as planned with high efficiency by sending a flow liquid other than a set flow rate between a main agent liquid and a hardener liquid respectively back to tanks when a polyurethane waterproofing membrane is coated on the surface of a building. SOLUTION: A main agent liquid 1a and a hardener liquid 1b other than a set flow rate are sent back to tanks 1a' and 1b' through passages 14a and 14b by providing three way switching valves 15a and 15b to gear pumps 2a and 2b and rear stages of flow meters 5a and 5b. When they are within a range of the set flow rate, they are conveyed to a pipe line mixer 8 to make them as a jet stream 9 so that it is injected to the surface to be sprayed. By the constitution, the valuable main agent liquid and hardener liquid are completely used, and the reduction of working hours and high efficiency can be executed to lessen loss.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Industrial applications] The disclosed technology is for concrete such as buildings and pools (straight upholstery and steel).
It belongs to the technical field of construction technology for forming a corrosion-resistant urethane waterproofing film on the surface of a structure such as.

[0002]

2. Description of the Related Art As is well known, dust adheres to the surface of concrete structures such as buildings and pools over time, and moss and the like grow and corrode. Not only impair the aesthetic appearance of the concrete structure, but also form a waterproof film on the rooftop, side and bottom of the concrete structure in order to prevent rainwater or the like from penetrating and adversely affecting the function of the structure itself. Technology has been developed, and one of the technologies for forming a urethane waterproofing film on the surface of the building by spraying a mixture of a base liquid of a high-speed curing urethane synthetic resin and a curing agent liquid in a mixed state has been known for a long time. However, as one of the applicants, Japanese Patent Application No. Hei 6-130177 (the invention of Japanese Patent Application Laid-Open No. Hei 7-331816) has been developed, and a waterproof membrane construction method or system as shown in FIGS. It was devised.

[0003] For the invention of the technical contents, reference is made to Japanese Patent Application Laid-Open No. Hei 7-331816.
In the specification of the invention of this application, the technical contents thereof will be briefly described. As shown in FIG. 4, a high-speed curing urethane resin-based main solution (hereinafter abbreviated as "main solution") 1a is removed from a tank 1a '.
The hardener liquid 1b is supplied from the tank 1b 'to the motor 11b.
gear pumps 2a and 2b respectively driven by a and 11b
From the flow meters 5a and 5b, the main agent liquid 1a and the hardening agent
Of the concrete structure as a coating layer by means of an ejector function in which high-pressure air which is pressure-fed to the static mixer 8 'through a static mixer 8' as a pipe mixer through hoses 7a and 7b flows through the mixer. To form a coating layer or a lining layer.

In order to control the system, as shown in FIG. 5, both of them designate and input a pumping amount per a predetermined time to an operation panel 14 and a gear 5 'of flow meters 5a and 5b shown in FIG. 8, the magnetic sensors 6a and 6b for the rotation of the gear 5 'of a predetermined number of permanent magnets 5 "embedded in the gear 5' detect rotation of the gear 5 'of the flow meters 5a and 5b, The detection data from the magnetic sensors 6a and 6b are input to the control unit 13, and the motor 1 of the gear pumps 2a and 2b is
Since the pressure difference between the outlet side and the inlet side of the flowmeters 5a, 5b is hardly observed by outputting to the control drivers 12a, 12b for controlling the magnetic sensors 6a, 11b.
b, the rotation data of the gear 5 'is transmitted to the motors 11a, 2b of the gear pumps 2a, 2b via the control unit 13.
11b is fed back to the drivers 12a and 12b and sent to the screw blade 29 shown in FIG. 7 of the static mixer 8 'of the pipe mixer through the hoses 7a and 7b, and the non-stirred mixing is given by the flow-through process to be uniformly dispersed. By opening the valve 23 by adjusting the trigger 21 of the pipe mixer 8 as an injection gun, the air passages 22, 25, 33, the screw blade 2
An air jet ejected from an air nozzle 27 passes through a passage 31 between the casing 9 and the outer casing 26 and is jetted as a jet jet 9 to a surface 10 of a concrete structure through an ejector action to form a predetermined coating layer or lining layer. Have been to be.

[0005] As shown in FIG. 5, compressed air from a compressor (not shown) is supplied from a passage 22 by the amount of a pipe mixer 8 as an injection gun and a trigger 21, and a main agent liquid 1 a from a control unit 13 is supplied. When the flow rate of the hardener liquid 1b is within the range of the setting error of the hardener liquid 1b, an instruction is issued that the main agent liquid 1a and the hardener liquid 1b can be supplied, and the three-way switching valves 15a and 15b are switched by control air. The main agent liquid 1 is applied to the surface 10 of the construction by the line mixer 8 of the injection gun.
The spraying of the waterproofing film agent in a homogeneously mixed state of a and the curing agent liquid 1b through the ejector action by high-pressure compressed air is performed as designed during operation, and a uniform coating layer or lining layer is formed. is there.

[0006]

However, when the jetting of the jet jet 9 of the waterproof film onto the surface 10 of the structure by the pipe mixer 8 of the jet gun is completed or stopped based on a predetermined work plan, FIG. As shown, the work stop signal from the pipe line mixer 8 is fed back to the control unit 13 and the control signal from the control unit 13 is transmitted to the gear pump 2.
The drivers 12a and 12b are stopped for the motors 11a and 11b of the motors a and 2b, and the flow meters 5a and 5b are stopped.
The measurement signals from the magnetic sensors 6a and 6b are also stopped, and all systems temporarily stop.

By the way, the timing and the place where the spraying of the uniform mixture of the main agent liquid 1a and the hardener liquid 1b by the jet jet 9 onto the surface 10 of the concrete structure are repeated as described above are changed according to the design planning and the construction schedule. In the case of spraying construction, it is necessary to repeatedly operate the temporarily stopped system after a set time with a lapse of time.

However, the flow ratio of the main agent liquid 1a to the curing agent liquid 1b is within the set range, even when the spraying is repeated several times or when the spraying is performed at different locations. It is extremely important that the flow rate ratio be within the range of, and all the flow ratios are strongly required to be strict.

However, as described above, when the spraying is repeated several times by the same system, or when spraying is performed in a different place, when the system which has been stopped is used again, the spraying to be restarted is performed. If the error of the flow rate ratio of the main agent liquid 1a and the curing agent liquid 1b is not within the set range, there is a possibility that curing failure may occur, a finish that does not match the design accuracy is performed, and the spraying accuracy on the initial surface of the structure is reduced, There is a possibility that it is necessary to redo the construction.

Therefore, when the system is restarted, the starting of the motors 11a, 11b of the gear pumps 2a, 2b by the drivers 12a, 12b is accurately stabilized, and the flowmeter 5
Until the detection data of the electromagnetic sensors 6a and 6b of the a and 5b indicate values within the set error range, the jet jet 9 from the pipe mixer 8 of the injection gun cannot be used as a defective jet jet, and Until the flow rate ratio of the base liquid 1a and the hardener liquid 1b falls within the set error range accurately, the jet stream 9 must be discarded and must be discarded, and the expensive main liquid 1a and the hardener liquid 1b are lost. There are disadvantages,
There was a disadvantage that it could not be abandoned in terms of cost.

A predetermined time is required for the system to start up from the input of the set flow rate ratio by the operator to the operation panel 14 via the control unit 13 until the jet flow 9 is jetted stably at the set flow rate ratio. This has the disadvantage of requiring more work time and lowering work efficiency.

When the coating or lining is not uniform as described above, the application must be repeated over and over again, and each time, there is a cost disadvantage due to loss of the main solution 1a and the hardener solution 1b, There was a disadvantage that the work efficiency was reduced and the construction period was long.

In addition, it takes a long time for the construction,
There was also a problem that the finishing accuracy was uneven between the initial spraying and the final spraying, and the reliability of the construction was lacking.

Further, once the injection is stopped, the mixture of the main agent liquid and the hardener liquid remaining in the injection gun 8 hardens and causes clogging. This has to be discarded, which also increases the cost and lowers the work efficiency.

[0015]

It is an object of the present invention to provide a high-speed urethane resin-based waterproofing film for the bottom and side surfaces of concrete (slate-clad or steel) structures such as buildings and pools based on the above-mentioned prior art. The main agent liquid and the curing agent liquid are mixed and sprayed in a uniform dispersion state, and during the spraying operation, the flow ratio of the main agent liquid and the curing agent liquid is stably performed as set, and the predetermined ratio with respect to the surface to be sprayed is determined. In order to temporarily stop the spraying according to the design planning and construction schedule, re-spray the urethane coating for the spraying without stopping the gear pump, or re-flow the system when performing a new spraying with a different spraying part There is no need to make adjustments and spraying is possible immediately. Until the stable flow ratio between the main agent liquid and the curing agent liquid falls within the set error range, the main agent liquid and the curing agent liquid are recycled to the main agent liquid tank and the curing agent liquid tank via the three-way switching valves via the control unit. Reflux, and
Before restarting the system, remove the mixture of the main agent liquid and the hardener liquid remaining in the pipe line mixer in advance with compressed air, etc., improve the durability of the injection gun, and discard the injection gun each time it is restarted. The flow meter maintains the mixing ratio in a state where the flow ratio of the main agent liquid and the curing agent liquid is stable within the set error range even when the main agent liquid and the curing agent liquid are circulating in each tank without reducing the cost. When spraying, the main agent liquid and the hardener liquid at a set flow ratio are supplied to the injection gun via a hose via a control unit via a three-way switching valve, and are ejected as a jet jet to the surface to be sprayed to improve performance and cost. The aim is to provide an effective utilization system of raw materials at the time of waterproofing membrane construction, which is designed to reduce downtime and improve work efficiency.

[0016]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the construction of the invention of the present application, which has the above-mentioned object as the object of the present invention, in order to solve the above-mentioned problems, is made of concrete such as a building or a pool. Or steel ones)
A high-speed curable resin-based base liquid (eg, polyester-based urethane) and a hardener liquid (eg, isocyanate polymer) are mixed on the bottom and side surfaces of the structure of the above structure to a predetermined thickness by a jet jet through a jet gun. When coating the layer and the lining layer, an operator inputs and sets the flow rate ratio of the main agent liquid and the hardener liquid to the operation panel, and inputs the main agent liquid and the hardener liquid via the control unit based on input information from the operation panel. When the gear pump is operated as required via the driver and the main agent liquid and the hardener liquid are pumped through the hose to the injection gun of the pipe mixer, the release pressure switch and flow meter interposed in the halfway passage are connected to the main agent liquid. The hardener liquid flows, and the data of the detected flow rate is fed back to the control unit, and the gear pump for the main agent liquid and the hardener liquid is operated at the set ratio to maintain the stable main pump. The pressure is accurately fed to the injection gun in a uniform dispersion state without stirring and mixing within the error range of the set flow ratio of the liquid and the curing agent liquid, and sprayed as a jet jet via the ejector action by the compressed air from the compressor that is separately pumped. In order to form a waterproof film having a predetermined thickness by squirting onto the surface, and during the spraying operation, the flow rates of the main agent liquid and the curing agent liquid of the flow meter are detected and fed back to the control unit. The flow ratio of the curing agent liquid through the gear pump is always stable, and the spraying of the waterproof film of the coating layer and the lining layer is performed as designed, and when the injection gun is stopped according to the design planning and construction schedule , The stop signal is fed back to the control unit, the injection system is stopped, and the static mixer in a part of the line mixer The mixture of the main agent liquid and the hardener liquid which are supplied and start to harden with the lapse of time. However, compressed air or a dissolving (melting) agent liquid such as thinner is supplied to the pipe line mixer through a predetermined operation. This prevents the static mixer in the line mixer from being clogged due to the flow, and eliminates the need to dispose of the static mixer in the line mixer. When the spraying is restarted in layers, or when the waterproofing film is sprayed on other spraying parts, the flow rate ratio between the base material liquid and the hardening agent liquid in the spraying is input to the operation panel. When the rotation ratio of the gear pump of the hardening agent liquid rises and does not become as set, and the ratio of the gear pump due to the feedback of the detection data from the flow meter does not fall within the set error range, While the flow rate measurement data of the main agent liquid and the hardener liquid by the static mixer of the flow meter does not fall within the set error range, switch the three-way switching valve provided at the part leading to the hose at the preceding stage of the injection gun via the control unit. The main agent liquid and the hardener liquid outside the error range of the set flow ratio are recirculated back to the main agent liquid tank and the hardener liquid tank to prevent wasteful disposal of the expensive main agent liquid and the hardener liquid, The sensor switches the three-way switching valve via the control unit at the timing when the flow rate ratio is within the set error range in the flow rate measurement of the main solution and the hardener solution, and the sensor is connected via the gear pump of the main solution and the hardener solution. The main agent liquid and the curing agent liquid having the set flow ratio are fed to a static mixer of a pipe mixer via a hose, and are uniformly dispersed in a state of stirring and mixing. Ejected as jet stream through the ejector acts on the high-pressure air sent from the server,
Since the waterproof film as set is formed again, useless use of the base liquid and the curing agent liquid is avoided, and cost reduction is achieved.
In addition, a waterproof film is coated on the surface to be painted as designed, by a mixed jet jet of the main agent liquid and the curing agent liquid by the injection gun,
Alternatively, technical measures are taken so that the lining, the work efficiency is extremely good, and the reliability of the formed waterproofing membrane is enhanced.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the invention of this application will be described with reference to FIGS.
This will be described below.

It is to be noted that the same parts as those in the drawings following FIG. 4 will be described using the same reference numerals.

In this embodiment, in particular, in the embodiment shown in FIG. 1, as in the conventional embodiment shown in FIGS. 4 and 5, a base material liquid 1a of a high-speed curable resin, for example, a polyester urethane is used as a tank 1a. , While a curing agent liquid 1b such as an isocyanate polymer is stored in the tank 1b 'in a predetermined manner, and the gear pumps 2a and 2b are driven by motors 11a and 11b, respectively.
Pressure gauges 3a and 3b, release pressure switch 4
hoses 7a, 7 via flow meters 5a, 5b via a, 4b
b through a spray gun 8 through a static mixer 8 'as a jet jet 9 onto a bottom surface or a side surface 10 of a concrete building or a pool to be sprayed to form a waterproof film according to a predetermined design. It is what is being done.

When each operator in the system is described in detail, as shown in FIG. 3, when the operator instructs the operation panel 14 to input a predetermined flow rate ratio between the main agent liquid 1a and the curing agent liquid 1b to be sprayed, The control unit 13 transmits a command signal to the drivers 12a and 12b of the motors 11a and 11b of the gear pumps 2a and 2b in accordance with the input information, and controls the motors 11a and 11b to drive the gear pumps 2a and 2b. .

FIG. 8 shows the flow meters 5a and 5b.
As shown in the figure, there are provided detection sensors 6a and 6b which are set so as to be directed to magnet type sensors 5 '' arranged along gears 5 'of the flow meters 5a and 5b. Detects the flow rate of the flow meters 5a and 5b, feeds back the detected data to the control unit 13, and pumps the main agent liquid and the hardener liquid 1a and 1b at the flow rates corresponding to the flow meters 5a and 5b. The gear pumps 2a and 2b are controlled at the same time.

During this time, the feed pressure and the feed pressure of the main agent liquid 1a and the hardener liquid 1b from the gear pumps 2a and 2b are measured by a pressure gauge 3.
Release pressure switch 4 detected by a and 3b
a, 4b safely release the flow.

Incidentally, a primer is applied in advance to a predetermined thickness on the surface 10 to be sprayed of the concrete construction part.

The flow rate of the flowmeters 5a and 5b by the gear 5 'has almost no pressure difference between the outlet side and the inlet side of the flowmeters 5a and 5b, the moment of inertia of the gear 5' is small, Since the load is small, even if it is interposed in the path through which the main agent liquid 1a and the hardener liquid 1b flow, the influence is small and the flow rate can be measured accurately.

Therefore, once the jet jet 9 is jetted and the waterproof film starts to be formed, the mixing ratio of the base liquid 1a and the hardener liquid 1b can always be accurately controlled, and the quality of the waterproof film is not varied and as designed. It is intended to be accurately formed.

Since the gear pumps 2a and 2b are not of the conventional reciprocating type, the flow rate detection signals from the flow meters 5a and 5b are fed back to the control unit 13 and the motors 11a and 11b are transmitted via the drivers 12a and 12b.
The main pump 1a and the hardener 1b are input to the operation panel 14 by constantly rotating the gear pumps 2a and 2b at an accurate flow ratio via the control panel 14 and can always be pumped at the set flow ratio during operation. .

In the spray gun 8 of the pipe mixer, the trigger 21 is returned to a spring (not shown) and urged.
A supply passage 22 for high-pressure compressed air connected to a compressor (not shown) is connected to passages 25, 33,
A hose 31 is provided at both ends of the pipe mixer 8 through a space 31 and ejected from the spray gun 8 at the distal end through a space between the static mixer 8 'and a gabber cylinder 26 provided outside a screw blade 29 of the static mixer 8'. Gear pump 2 via 7a, 7b
a and hardener liquid 1b pumped from a and 2b
Is mixed in a uniform dispersion state without stirring in the flowing process, and a jet is jetted through the ejector action of the high-pressure compressed air jetted from the jet gun 8 to form a jet jet 9 and a primer is previously applied to the surface 10 of the concrete structure. The waterproof film is formed by squirting onto the surface to be coated.

The mixed droplet particles 9 in the form of a mist by the spray gun 8 have a relatively large particle size, that is, 1.0 to 3.0 μm.
When the urethane waterproofing film is formed by being laminated on the surface 10 to be sprayed to a degree, pores having a relatively large particle size and being hard to be crushed are formed, so that these pores are continuously formed. Therefore, a moisture-permeable urethane waterproofing membrane is formed, which does not transmit moisture but transmits water vapor.

Therefore, the spraying of the urethane waterproofing film having a thin thickness of usually about 2 to 3 mm can be performed by one spraying.

Furthermore, since the mist-like mixed droplets are formed in a completely uniform dispersion state by the screw blade 29 of the static mixer 8 'to make the particle diameters of the mist-like mixed droplets uniform, Jet jet 9
The energy at the time of collision is large, so that a high-quality urethane waterproofing film having high adhesion strength is formed.

In the invention of this application, FIG.
In the embodiment shown in FIG. 2, the supply passage 16 from the flow meters 5a, 5b to the hoses 7a, 7b connected to the pipeline mixer 8
The three-way switching valves 15a, 15b electrically connected in parallel to the control unit 13 are interposed in the control units 1 and 16b.
3, the flow ratio of the main agent liquid 1a and the curing agent liquid 1b from the sensors 6a and 6b of the flow meters 5a and 5b deviates from the set error range,
When an abnormal signal is transmitted, the three-way switching valve 1
5a and 15b are switched to each other via the return passages 14a and 14b of the main agent liquid 1a and the hardener liquid 1b to the tanks 1a 'and 1b'. The liquid 1b is returned to the tanks 1a, 1b, 1b 'for recycling, so that the unused portion is not discarded, the expensive main solution 1a and the hardener 1b are prevented from being consumed, and the cost can be reduced. Flow meters 5a, 5
b sensors 6a and 6b are the main liquid 1 of the flow meters 5a and 5b.
a, when the flow rate ratio of the curing agent liquid 1b is detected as falling within a set error range, it is confirmed that the abnormal signal has disappeared, and the three-way switching valves 15a, 15b are moved from the flow meters 5a, 5b to the hoses 7a, 7b.

When the urethane waterproof film is once formed on the surface 10 to be sprayed by the jet stream 9 via the static mixer 8 'of the pipeline mixer according to the design planning and the construction schedule, and the re-spraying is performed again in multiple layers. Alternatively, when resuming the spraying by changing the spraying part, the jetting of the jet jet 9 from the static mixer 8 'of the pipe line mixer is temporarily stopped. By the return spring, the trigger 21 is in a state of stopping the ejection,
The jet of the jet stream 9 stops. At this time, the mixture of the main agent liquid 1a and the hardener liquid 1b remaining on the screw blade 29 of the static mixer 8 'starts to harden in a short time, and a clean jet is restarted. There is a possibility that the ejection of the jet is obstructed. To cope with this, as shown in FIG.
When the return of the trigger 21 is detected, via the control unit 13,
The dissolving (melting) agent liquid 1c is supplied from the tank 1c 'in which the dissolving (melting) agent liquid 1c such as compressed air or thinner toluene is stored to the pipe mixer 8, and the static mixer 8' After flowing through the screw blade 29, the mixed hardening liquid of the main agent liquid 1a and the hardening agent liquid 1b remaining in the pipe line mixer 8 is discarded to an exclusion tank (not shown), and when the pipe line mixer 8 is reused, The screw blade 29 can maintain the non-stirring mixing / dispersing function.

Each of these controls is as shown in the flowchart of FIG.

Therefore, in the pipe line mixer 8 of the invention of the present application, the function of the non-stirring mixing at the time of restarting by the mixed hardening liquid of the main agent liquid 1a and the hardening agent liquid 1b which remains after each spraying is performed. It cannot be used, is not discarded, and is well worth the cost.

In the above construction, when spraying a urethane waterproofing film on the surface of a concrete (slate-clad or steel) building or swimming pool, the operator first puts the main agent liquid 1a per unit time on the operation panel 14. And the pressure feed amount of the curing agent liquid 1b are inputted.

The control unit 13 controls the motors 11a and 11b for driving the base liquid 1a and the hardener 1b based on the input data.
By controlling the gear pumps 2a and 2b, the main agent liquid 1a and the hardener liquid 1b are pumped to the supply passages 16a and 16b.

The main solution 1a in this process is
The flow rate of the hardener liquid 1b is measured by the flow meters 5a and 5b, and the measured data is detected by the sensors 6a and 6b and transmitted to the control unit 13, and the control unit 13 performs the control based on the input data. Driver 12a, 12
b through the motors 11a and 11b and the gear pump 2
The main agent liquid 1a and the hardener liquid 1b are sent under pressure by a and 2b.

At the time of the initial operation, at the time of startup, the main solution 1a and the hardener solution 1b are not always within the error range of the set flow ratio due to various conditions of the flow meters 5a and 5b. In the case of outside, since the urethane waterproofing film as designed is not formed, and when the spraying is once stopped and the start-up is performed at the timing of restarting, the main base liquid 1a and the hardener liquid 1b have the same error in the set flow ratio as described above. In this case, the measurement data of the sensors 6a and 6b outside the range is transmitted to the control unit 13 and the three-way switching valves 15a and 15b are switched so that the main agent liquid which is not provided with the accurate set flow rate ratio is not provided. 1a and the hardener liquid 1b are returned to the respective tanks 1a 'and 1b' through the passages 14a and 14b in a recycle manner and are effectively reused. When the sensors 6a, 6b of 5b transmit and input the measurement data of the error range of the set flow ratio to the control unit 13, the three-way switching valves 15a, 15b are connected to the hoses 7a,
7b, the main agent liquid 1a and the hardening agent liquid 1b having the designed flow ratio within the error range of the set flow ratio are pressure-fed, and are mixed without stirring in the screw blade 29 of the static mixer 8 'to form a uniform dispersion state. Jet 8 is jetted onto jet surface 9 as jet jet 9.

At this time, in the embodiment shown in FIG. 2, when the trigger 21 of the pipe mixer 8 is returned to stop jetting of the jet stream 9, the main agent liquid 1 a and the hardener liquid 1 b remaining in the screw blade 29 are removed. In order to immediately start the curing of the mixed liquid, the switching valve 15c is opened and compressed air or a dissolving (melting) agent liquid 1c such as thinner or toluene is supplied from the tank 1c 'to the screw blade 29 of the pipe line mixer 8. Is discharged to a waste tank (not shown), and the inside of the static mixer 8 'is cleaned so that accurate restart is performed as designed.

Therefore, in the invention of this application, the main liquid 1 within the accurate error range of the set flow ratio is added to the pipe mixer 8.
a and the curing agent liquid 1b are not supplied accurately, the three-way switching valves 15a, 14b are provided to the tanks 1a ', 1b' by passages 14a, 14b without discarding the main agent liquid 1a and the curing agent liquid 1b. 15b, the waste can be saved by reducing wasteful consumption of the expensive base solution 1a and the hardener solution 1b, and the measurement is performed within the error range of the set flow rate ratio. The spraying of the urethane waterproofing membrane is performed accurately and efficiently because the spraying from the closed state is started, and the compression is performed in a state where the jet stream 9 of the mixture in the pipe mixer 8 is stopped. In order to force the air or the dissolving (melting) agent liquid or the compressed air 1c to flow through the screw blade 29 of the pipe mixer 8 and to forcibly discharge the same, the pipe mixer is used for each spraying. Staticmi By eliminating the necessity of disposing the xer 8 ', the cost can be reduced from this point, and it can be seen that the urethane waterproofing film can be sprayed accurately.

It should be noted that the embodiments of the invention of this application are not limited to the above embodiments, and various embodiments can be adopted.

Further, as a matter of design change, it goes without saying that it is possible to attach a pressure feed pump to the tank 1c 'for the dissolving (melting) agent liquid.

[0043]

As described above, according to the invention of this application, a concrete structure (such as a slate-clad or steel structure) for a building or a pool is basically formed by using a base resin solution and a hardener solution of a high-speed curing resin. When coating and molding a urethane waterproofing film on the bottom and side surfaces of the object, instead of using a reciprocating pump as in the conventional mode, the main agent liquid and the curing agent liquid are supplied to the pipe mixer using a gear pump. In a system that mixes under pressure and puts it on compressed air by spraying it from a nozzle onto a surface to be sprayed, a three-way switching valve is provided in the passage from the main agent liquid tank and the hardener liquid tank to the pipe line mixer. When the flow ratio between the base liquid and the curing agent liquid is outside the set range, the main liquid and the curing agent liquid are returned to the base liquid tank, and when the flow ratio is outside the predetermined range, the liquid is pumped to the pipeline mixer. I will switch When the system is sprayed once and then sprayed again, or when spraying another part again, the nozzle of the pipe mixer is stopped once and the main agent liquid and hardener liquid are When the flow rate ratio of the liquid is out of the setting range, the conventional base liquid and hardener liquid were discarded. In addition, there is an excellent effect that the hardener liquid is positively used in resource saving without being wasted, and the cost can be reduced.

Immediately after the jetting of the mixed liquid from the nozzle of the pipe mixer is stopped, the main agent liquid and the hardener liquid remain as a mixed liquid in the pipe mixer and the hardening starts. When the nozzle of the static mixer of the pipeline mixer is stopped, compressed air or a dissolving (melting) agent solution is passed through the pipeline mixer via another valve, and the mixed solution is discarded at the time of washing. By doing so, the pipe line mixer does not have to be discarded each time it is used as in the past, so that the equipment is low in cost, easy to use, work efficiency is improved, and the urethane waterproof membrane as designed is An excellent effect that it can be formed is exhibited.

Therefore, it is possible to provide a system which can be operated at a high efficiency and at low cost in terms of resources.

[Brief description of the drawings]

FIG. 1 is a chart diagram of an embodiment of the present invention.

FIG. 2 is a chart diagram of another embodiment.

FIG. 3 is a chart of a control circuit.

FIG. 4 is a schematic chart diagram of a waterproofing construction system for a building in a conventional mode.

FIG. 5 is a chart diagram of a control circuit in a conventional mode.

FIG. 6 is a schematic side view of a pipe mixer.

FIG. 7 is a partial cut-away vertical sectional view of a static mixer.

FIG. 8 is a partially enlarged perspective view of a main part of the flow meter.

[Explanation of symbols]

 1a Main agent liquid 1b Curing agent liquid 8 Pipe line mixer 8 'Static mixer 10 Work surface 15a, 15b Three-way switching valve 1a' Main agent liquid tank 1b 'Curing agent liquid tank 1c Dissolving (melting) agent liquid 6a, 6b Sensor

Claims (5)

[Claims] 1. A waterproof film construction in which a high-speed curable resin-based curing agent solution and a curing agent solution are pressure-fed to a pipe mixer, mixed, put on compressed air, ejected from a nozzle to a work surface, and applied. In the system, a three-way switching valve is disposed in front of the conduit mixer of each passage of the curing main agent liquid and the curing agent liquid, and when the flow ratio between the main agent liquid and the curing agent liquid is outside the setting range error, each A waterproofing membrane construction system wherein the liquid is returned to the base liquid tank and is fed to the pipeline mixer under pressure within a set range error. 2. A waterproofing membrane construction system wherein a three-way switching valve is switched by measuring a flow ratio of the two agents with a sensor of a flow meter. 3. The method according to claim 1, wherein the supply of the main agent liquid and the hardener liquid to the pipe mixer is stopped, and immediately after the stop, the mixture of the main agent liquid and the hardener liquid in the pipe mixer is forcibly removed. The waterproofing membrane construction system according to claim 1, characterized in that: 4. The waterproofing membrane construction system according to claim 3, wherein said mixture is removed by compressed air. 5. The waterproofing membrane construction system according to claim 3, wherein said mixture is removed by a dissolving agent.