JPS61263667A - Two-liquid spray foaming device - Google Patents

Abstract

PURPOSE:To produce polyurethane foam with a small-sized device easily by mixing 2 kinds of heated liqs. with compressed air from a compressed air supply device and discharging the mixture from a spray gun through an insulated hose. CONSTITUTION:When urethane foam is applied on the wall of a building structure, a pressure tank 1 contg. a liq. A and a pressure tank 2 contg. a liq. B are covered with a heating vessel 3 having thermal oil 4. Compressed air discharged from an air compressor 5 provided with an air accumulator is passed through an air filter 6, pressure-reducing valves 7 and 8 to remove water and dust and then the pressure of air is regulated. Compressed air at specified pressure is blown into the respective tanks 1 and 2 at respective specified pressures, the liqs. A and B are supplied to a nozzle part 31 of a spray gun 30 and an insulating device is provided to the hose leading to the gun. Consequently, thermal insulation can be carried out with a small-sized device.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a polyurethane foam construction device for performing insulation work on walls of building structures, etc., and is particularly configured to be compact and easy to construct. It turns into a device.

(Prior art) Traditionally, in general buildings, freezers, refrigerated safes, heat-retaining facilities, etc., insulation materials have been integrated into walls, panels, etc., and the insulation has been treated. Often.

In the conventional insulation construction methods described above, a plate-like material such as styrofoam is attached to a panel member integrally, or a thin plate member is attached at intervals to a frame member. In many cases, a layer of heat insulating material such as foamed steel roll is formed between the plate members, or a heat insulating layer is formed by spraying polyurethane foam on the surface of the steel plate, etc. It is used.

However, when using a panel-shaped heat insulating member formed separately from the plate-like member, since the heat insulating member is made in a factory etc., the construction involves simply assembling the boards, and the construction On the other hand, in the case of polyurethane foam, which tends to be installed more frequently these days, the insulation material is sprayed directly onto the wall, etc. that is the target of the insulation work. Although there are no gaps between the insulation materials and the insulation effect is very high, when the polyurethane foam is applied at a construction site or the like, there are major problems with conventional equipment.

In other words, on-site construction of polyurethane foam is mainly carried out by the spray method. When discharging from the tank and ejecting from the tip of the spray gun,
Both liquids are mixed, and the mixture causes foaming of polyurethane foam, but liquids A and B have the property of foaming and hardening when water is mixed in. Therefore, it is difficult to use air directly when performing normal work, and therefore nitrogen or Freon gas, etc., are often used, and in places without such gas filling equipment, it is difficult to use air directly. , has the disadvantage of not being able to receive gas replenishment.

In other words, when using pressurized gas, it is possible to perform the work with the amount of gas contained in the gas cylinder, but when the cylinder is empty, it is naturally necessary to replace it. It will be necessary to move heavy cylinders. In general, nitrogen gas, freon gas, etc. are particularly expensive, and other expenses such as transportation costs are also relatively expensive.

In addition, if gas is not used, compressed air is used, but
In this case, the overall configuration of the equipment, including the air compression equipment, tends to be relatively large because it is configured to suit large-scale construction projects, and the disadvantage is that the equipment is relatively expensive. Because of this, even if an inexpensive liquid agent could be developed and its insulation effect improved, its use was often hindered by other conditions.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned drawbacks of conventional devices, and makes it possible to very easily construct insulation walls, etc. using commercially available small compressors. The aim is to reduce the size of the device and provide a device that is easy to handle.

(Means and effects for solving the problem) 2 of the present invention
Liquid spray foaming equipment consists of a pressure tank equipped with a heat retention device, a compressor that supplies compressed air to the pressure tank and the liquid stored in the tank, and removes moisture etc. from the compressed air. The spray gun is configured to mix and stir liquids A and B, which are separately sent out from two tanks, and spray them using compressed air.

Then, the main agent liquid and the auxiliary agent liquid are stored in respective pressure tanks, and by blowing compressed air at a predetermined pressure into each tank, the A liquid and the BW are introduced into the nozzle part of the spray gun.
& and, and in the nozzle section, the multi-stage screw-like stirring blades ensure the mixing and agitation of the liquid materials, and the compressed air supplied to the nozzle section from another route blows onto the object to be insulated. This allows for the formation of polyurethane foam walls.

(Example) The present invention will be described in detail according to an illustrated embodiment. As shown in FIG. is A
Consisting of a pressure tank 1 that accommodates the liquid, a pressure tank 2 that accommodates the B liquid, and a heating 4!3 that covers the above two pressure tanks and accommodates the thermo oil 4 inside. be done.

The equipment for supplying compressed air includes an air compressor 5 provided with an air reservoir, and an air filter 6 for removing moisture and dust contained in the compressed air discharged from the compressor 5. , a pressure reducing valve 7.8 provided in the middle of the air supply pipe between the air filter and the pressure tank 1.2, and each air port for introducing air adjusted to a predetermined pressure from the pressure reducing valve into the pressure tank. 9.10 is formed, and furthermore, a portion of the air discharged from the air filter 6 enters directly into the spray gun 30 and is used to effect the jetting of the mixed fluid.

Further, the liquid agent discharged by the compressed air is delivered from each liquid outlet to the spray gun 30 via joints 13 and 14.

The nozzle part 31 formed at the tip of the spray gun 30 has a configuration as shown in FIG. Lmff1 valves 32a to 34a using levers are provided in the middle, and a multistage screw-shaped stirring blade 35 for mixing and stirring liquid A and liquid B is provided inside the valve, and a stirring blade 35 is provided so as to penetrate through the center thereof. An air pipe 36 is provided. This Air Buy 13
The tip of the nozzle 6 is open to a gas-liquid mixing part 37 formed at the tip of the nozzle part 31, where a mixture of air and liquid is formed, and the mixture is ejected from a nozzle 38 toward a wall, etc. I try to spray it on.

In the device of the present invention, the circuit for controlling the device is
It is formed as shown in FIG. That is, the power lamp 20 is directly connected to the power source, and the lamp 21 for indicating the usable state of the device is connected to the temperature sensor 2.
It is designed to be lit via 7.

This sensor 21 is designed to indicate that the liquid is in a good state e. The temperature for foaming is 25°C or higher and it can be used.Usually, the temperature of the pressure saw tank is set at 25-3.
The temperature can be maintained at 5° C., and the compressor 5 is operated by the input of the switch 22.

The heater 25 for heating the pressure tank 1.2 is energized via a thermo oil 24 connected to a switch 23 and a temperature sensor 26. The temperature sensor 26 is provided to prevent abnormal heating and is set to turn off the power when the temperature is in the range of 0 to 40°C. .

Furthermore, although not shown in the drawings, the hose for delivering the liquid of the present invention is equipped with a heater to cool the delivered liquid even in cold weather and to prevent the foaming state from worsening. It is being done. The heating temperature of this hose is
It is necessary to be able to maintain the temperature of the liquid agent sent out from the pressure tank so that it does not drop.

Further, in the apparatus of the present invention, as shown in FIGS. 4 to 7, the apparatus is constructed in a small size, and all members are constructed compactly. In other words, a small motor, a compressor 5, an air tank, an air filter 6, and
Two pressure tanks 1.2 are provided inside a heating tank 3, and a thermo oil 4 is stored in the heating tank 3, and the oil 4 is heated by a heating heater 25. I have to. Around this pressure tank 1.2, there is a sensor 2 that detects its temperature and is activated by it.
6.27 and a thermoswitch sensor 28 are provided. Moreover, outlet ports 13 to 15 for the A and B liquids and air are formed on the outside of the apparatus of the present invention, and a hose is extended from the connection port to connect to the spray gun 30.

In the device of the present invention, indicator lamps 20, 21, hose joints 13-15, switches 22-23, etc. are exposed on the outside of the transportable device, as shown in FIGS. 4-5. The other members are configured so that they can be reliably housed within the case of the main body.

When spraying polyurethane foam using the apparatus of the present invention, the heating temperature is adjusted to 30°C, and a pressure of 5.5#/cd is applied to liquid A, and a pressure of 5.5 #/cd is applied to liquid B. It was possible to perform the test in good condition by adjusting the pressure of the compressed air using a regulating valve at a pressure of 5 phantom/d. In addition, in the device of the present invention, the amount of compressed air used for discharging the liquid agent only needs to be placed in an amount corresponding to the volume of the liquid agent to be discharged, so the consumption amount is very small, and the spray gun The consumption amount of air exhausted from the center of is also 25 to 35j/ffi
Atmospheric pressure n > (%)
A small 0W compressor is also sufficient. In addition, the pressure tank is heated and the hose is equipped with a heating device in order to maintain the optimal temperature of 25 to 35 degrees Celsius for foaming the liquid, especially when performing construction in cold regions. In order to carry out the
It will consume about 100% of power, but in steady operation, it will consume about half that amount.
Therefore, the work can be carried out using normal household wiring without any special wiring work or the like.

As described above, the apparatus of the present invention is constructed to be extremely small and lightweight as a whole, and construction work can be performed very easily. Further, the apparatus of the present invention can sufficiently handle normal work by setting the length of the hose to about 10 degrees. Furthermore, when the liquid in the pressure tank runs out, you can open the tank lid and replenish the liquid, making it suitable for insulating any large area. be.

(Effects of the Invention) Since the two-component spray foaming device of the present invention has the above-mentioned configuration, its liF is composed of a very small and light material, which is suitable for small insulation works, etc. This means that it is fully capable of handling large-scale insulation work.

In addition, the device of the present invention uses a very small air compressor, and its overall power consumption is very low, so it can be used for construction using home electric power mg. This makes it possible to reduce construction costs overall.

Furthermore, the device of the present invention is very easy to handle and does not require special skill, so anyone can easily carry out insulation work.

[Brief explanation of the drawing]

FIG. 1 is a developed diagram showing the configuration of the two-component blowing foaming device of the present invention, FIG. 2 is an explanatory diagram showing the configuration of the nozzle of the present invention, and FIG. 3 is an explanatory diagram of the control system of the present invention. FIG. 4 is a plan view of the apparatus of the present invention, FIG. 5 is a front view thereof, FIG. 6 is a right side view thereof, and FIG. 7 is a left side view thereof. Reference numerals in the diagram 1.2...Pressure tank, 3...Heating tank, 4...Thermo oil, 5...Compressor, 6...・・・Air filter, 7.8・
...Reducing valve, 11.12 ...Liquid outlet, 20 ...Power lamp, 21 ...Ready to use lamp, 22 ...Compressor Switch, 23... Heater switch, 24...
・Thermo switch, 25... Warming heater, 2
6.27...Temperature sensor, 30...
Spray gun, 31...Nozzle part, 32-34
... Hose, 35 ... Stirring tube, 38.
·····nozzle. Figure 1 Figure 2 Figure 33! I Figure 4 $51 l6rII Figure 7

Claims (1)

[Claims] a pressure tank for respectively accommodating two types of liquid;
A device for heating the pressure tank, a pressure air supply device configured to remove moisture, etc. from compressed air sent out from the air compressor and feed it into the pressure tank at a predetermined pressure via a pressure reducing valve, and each pressure tank. It consists of a spray gun configured to mix two types of liquids sent out by the force of pressurized air and discharge the mixture, and a liquid guiding hose equipped with a heat-retaining device. Features a two-component spray foaming device.