JP3103377U - Spray type cleaning equipment - Google Patents

Abstract

An object of the present invention is to provide a spray type cleaning apparatus capable of always performing smooth transfer to a spray gun irrespective of a change in the amount or particle size of baking soda and improving the efficiency of cleaning or peeling cleaning.
Kind Code: A1 A spray-type washing apparatus for injecting baking soda 6 is provided. And a ratio of 1: 1.5 or more, and is sucked and sent to the feeder hose 8 together with the outside air sucked under a negative pressure from a gap between the opening 10A of the funnel 10 and the gap.
[Selection diagram] Fig. 1

Description

  The present invention relates to a spray-type cleaning apparatus for cleaning food equipment, tanks, and the like by spraying powdered baking soda (particularly food baking soda), or for performing peeling cleaning of various surface films, coatings, and the like.

Conventionally, blast is generally used as a means for surface treatment of various devices and the like, and a steel ball, sand, or the like is used as a jetting medium for the blast.
However, recently, harmless powdered baking soda (especially food baking soda) has been found to be sufficiently useful as a jetting medium in Europe and the United States, and blasting using this has been proposed. That is, a pressure method, that is, a method in which baking soda is put into a pressurized tank, pressurized by compressed air and sent out, and then ejected from a nozzle.

  Such a pressurizing method requires a pressure tank, which is very expensive in terms of cost, and also tends to generate lumps because baking soda is constantly placed under pressure. There is a problem that clogging is apt to occur in the open / close valve or hose, particularly when the particle size of baking soda is large.

In order to solve such a problem, the present inventors have proposed an invention which is not a pressurized baking soda injection using a pressure tank.
JP 2000-296469. The present invention is intended to inject powdered baking soda by negative pressure suction, cut out a predetermined amount of baking soda in a baking soda tank by a vibrating quantitative cutout feeder, suction this with compressed air to a spray gun, guide it, Injecting from a nozzle.

The above-mentioned invention has an excellent effect in that the conventional pressure tank is not required, from the functional viewpoint of preventing clogging and utterance, and in that an expensive pressure tank and equipment are not required.
However, at the point where baking soda is conveyed from the baking soda tank to the spray gun by negative pressure suction of baking soda, it is difficult to convey a predetermined amount of longitudinal travel smoothly because of the so-called secondary pressure generated by the negative pressure. There was a problem.
In addition, this problem is caused not only when the amount of the baking soda to be sprayed is increased, but also when the particle size of the baking soda is large, for example, when it is about 1 mm to 2 mm (typically, 200 to 400 microns). It was even more pronounced.

  Research on this problem has led to the question of whether the negative pressure acting on the baking soda cut from the vibrating quantitative cutout feeder can evenly act on the baking soda and exert a sufficient transport action. I understood that.

  In view of the relay means for transferring the baking soda cut from the vibrating quantitative cutout feeder used in the above invention to a spray gun, a baking soda transport plate is desired above a funnel provided in a hose connected to the spray gun (Patent The document was configured so that baking soda would fall into the funnel.

This relay means has a configuration in which outside air can freely flow into the funnel with baking soda falling into the funnel.However, it is considered that the insufficient amount of outside air inflow impedes smooth conveyance. .
Further, as the relay means, a structure for closing a funnel has been proposed (see FIGS. 4 and 5 in Patent Documents). However, such a structure does not allow smoother conveyance.

  In view of the above problems, the present invention provides a spray type washing apparatus that sprays powdered sodium bicarbonate by negative pressure suction using compressed air. An object of the present invention is to enable smooth and continuous cleaning and to enhance the efficiency of cleaning or peeling and cleaning.

According to the present invention, in order to achieve the above object, the spray gun 3 is connected to the compressed air source 1 through the flow control valve 2 using the air hose 7, and the vibration type fixed quantity feeder 5 is connected to the baking soda hopper 4. A predetermined amount of powdered baking soda 6 is provided, and a feeder hose 8 for guiding the cut baking soda 6 to the spray gun 3 is provided, and a negative pressure in the spray gun 3 generated by operating the trigger 3A of the spray gun 3 is provided. A spray-type cleaning apparatus configured to suction the baking soda 6 through the feeder hose 8 by pressure and to spray the same from a nozzle 3B,
The vibrating quantitative cutout feeder 5 is provided with a discharge chute 9 for allowing the baking soda 6 to naturally fall downward. The discharge port 9A is provided so as to be substantially at the center of the opening 10A in plan view, and the area S1 of the discharge port 9A of the discharge chute 9 and the opening 10A of the funnel 10 The ratio with the area S2 is set to be 1: 1.5 or more so that outside air can be introduced from the outer periphery 9B of the discharge port 9A of the discharge chute 9 to the opening 10A of the funnel 10; The baking soda 6 that has fallen from the discharge port 9A is sucked into the feeder hose 8 together with the outside air sucked under a negative pressure from the gap C between the discharge chute 9 and the opening 10A of the funnel 10 in plan view. Are configured to be sent Te in which took measures that.

  According to the present invention, in particular, the opening 10A of the funnel 10 is substantially flush with the outlet 9A, facing the outlet 9A of the discharge chute 9, and the outlet 9A is, when viewed in a plan view, the outlet 9A. The opening S was provided so as to be substantially at the center of the opening 10A, and the area ratio of the area S2 of the opening 10A of the funnel 10 to the area ratio S1 of 1.5 or more was larger than the area S1 of the discharge port 9A of the discharge chute 9. As a result, while a sufficient outside air introduction gap C can be taken, a so-called eject action is generated by the gap C, so that the inflow speed can be increased, and the air is mixed with the baking soda 6 dropped from the discharge port 9A. The baking soda 6 is fed into the feeder hose 8 in an air-rich state, and smoothly conveyed to the spray gun 3 without causing a clogging phenomenon. It becomes Rukoto.

  In this way, despite the negative pressure suction spray method that does not require a pressure tank and equipment, regardless of changes in the amount or particle size of powdered baking soda, transport to the spray gun can always be performed smoothly, This brings about a remarkable effect that the efficiency of cleaning or peeling cleaning can be enhanced.

As an embodiment of the present invention, it is preferable that a water supply hose 11 is connected near the nozzle 3B of the spray gun 3 so that water is sucked and sprayed as the baking soda 6 is injected.
Spraying water together with baking soda 6 in this manner has the effect of eliminating static electricity generated when baking soda 6 collides with a target object, and at the same time, automatically sprays baking soda 6 because it is water-soluble. Will be dissolved and drained. In this case, since the baking soda 6 is harmless, there is no pollution problem.

  Preferably, the particle size of the baking soda 6 is from 200 microns to 2 mm. Until now, the particle size of baking soda 6 was 200 to 400 μm, but the above-mentioned configuration allows even baking soda of about 1 to 2 mm to be conveyed without clogging. A large kinetic energy can be exerted at the time of spraying, which is extremely useful in peeling and cleaning.

Hereinafter, a preferred embodiment of a spray type cleaning apparatus according to the present invention will be described in detail with reference to FIGS.
That is, although the spray gun 3 (blast gun) is drawn away from the flow control valve 2 (in FIG. 1, the baking soda hopper 4 using an air hose 7), it is actually disposed near a funnel 10 described later. ) To a compressed air source 1, here a compressor. Of course, the compressed air source 1 can be a multipurpose factory piping compressed air source. The operating pressure adjusted by the flow control valve 2 is 3.3 atm, but is preferably about 2.5 to 5 atm.

  Then, a vibration type fixed amount cutout feeder 5 is connected to the baking soda hopper 4 to cut out a predetermined amount of powdered baking soda 6. The vibrating quantitative cutout feeder 5 itself may be of a commercially available type that can be quantitatively adjusted (a dial scale system or the like), and therefore, detailed description thereof is omitted here. The baking soda hopper 4 contains baking soda 6 having a particle size of 200 microns. This baking soda 6 can actually be operated even if the particle size is 2 mm.

  Further, a feeder hose 8 for guiding the cut baking soda 6 to the spray gun 3 is provided, and the baking soda 6 is passed through the feeder hose 8 by a negative pressure in the spray gun 3 generated by operating the trigger 3A of the spray gun 3. And is ejected from the nozzle 3B.

  Then, a discharge chute 9 for allowing the baking soda 6 to naturally fall downward is provided in the vibrating quantitative cutout feeder 5, and a funnel 10 having the opening 10 A having the opening 10 A facing the discharge port 9 </ b> A of the discharge chute 9. The outlet 9A is substantially flush with the outlet 9A, and the outlet 9A is provided so as to be located substantially at the center of the opening 10A in plan view.

  In this embodiment, the ratio of the area S1 of the discharge port 9A of the discharge chute 9 to the area S2 of the opening 10A of the funnel 10 is approximately 1 to 3 as a preferable value. It is configured such that outside air can be smoothly introduced into the opening 10A of the funnel 10 from the outer periphery 9B of the outlet 9A of the chute 9. Incidentally, the discharge port 9A of the discharge chute 9 is about 50 × 70 mm, the opening 10A of the funnel 10 is about 30 × 40 mm, and the ratio is 2.91. Of course, it has been found that the area ratio S1 to S2 may be 1 to 1.5 or more as long as the object of the present invention can be achieved by actual operation.

Further, the baking soda 6 dropped from the discharge port 9A is sucked into the feeder hose 8 together with the outside air sucked under a negative pressure from a gap C between the discharge chute 9 and the opening 10A of the funnel 10 in a plan view and sent. It is configured to be used.
The size of the gap C differs around the opening 10A depending on whether the discharge port 9A is positioned substantially at the center of the opening 10A or is slightly displaced in plan view. However, although it is preferable to be located at the center, even if it is slightly displaced, the ejecting effect of the outside air inflow does not decrease.

  Further, a sensor 12 is provided which senses the internal pressure (negative pressure) of the feeder hose 8 near the flow rate control valve 2 and activates the vibration type quantitative cut-out feeder 5 based on the detection result. The sensor 12 includes a tube connected to the feeder hose 8 and a negative pressure generated in the tube (a negative pressure generated when air from the compressed air source 1 is injected together with the baking soda 6 by the trigger 3A of the spray gun 3). Pressure), and the vibration-type fixed quantity feeder 5 is driven by the electric signal.

  Further, a water supply hose 11 is connected to the vicinity of the nozzle 3B of the spray gun 3 so that water is sucked and sprayed as the baking soda 6 is injected. In this case, although the suction action for water occurs, the water is actually used in such a state that the water is slightly spontaneously discharged. The water amount is adjusted by adjusting a valve (not shown) of a water pipe to which the water supply hose 11 is connected.

Industrial applications

Examples of applications of the present invention include oil tanks buried underground, large food tanks installed above ground (beer, milk, etc.), food equipment, cleaning of building walls, etc., and various equipment, painted surfaces (fluorine film, Paints).
In particular, when food baking soda is used, its harmlessness can be expected to expand the range of use.

It is a whole vertical front view of an example. It is a whole longitudinal side view of an Example. It is an expansion perspective view of the important section of an example.

Explanation of reference numerals

1: Compressed air source 2: Flow control valve 3: Spray gun 3A: Trigger 3B: Nozzle 4: Baking soda hopper 5: Vibrating quantitative cutout feeder 6: Baking soda 7: Air hose 8: Feeder hose 9: Discharge chute 9A: Discharge port 10: funnel 10A: opening 11: water supply hose S1: area of outlet S2: area of opening

Claims (3)

The spray gun 3 is connected to the compressed air source 1 via the flow control valve 2 using the air hose 7, and the vibration type fixed amount cutout feeder 5 is connected to the baking soda hopper 4 to cut out a predetermined amount of powdered baking soda 6. A feeder hose 8 for guiding the cut-out baking soda 6 to the spray gun 3, and the baking soda 6 is supplied to the feeder hose 8 by a negative pressure in the spray gun 3 generated by operating the trigger 3 </ b> A of the spray gun 3. A spray type cleaning device configured to be sucked through the nozzle and ejected from the nozzle 3B,
The vibrating quantitative cutout feeder 5 is provided with a discharge chute 9 for naturally dropping the baking soda 6 downward,
Opposing the discharge port 9A of the discharge chute 9, the opening 10A of the funnel 10 is substantially flush with the discharge port 9A, and the discharge port 9A is positioned substantially at the center of the opening 10A in plan view. So that
The ratio of the area S1 of the discharge port 9A of the discharge chute 9 to the area S2 of the opening 10A of the funnel 10 is set to be 1: 1.5 or more, and from the outer periphery 9B of the discharge port 9A of the discharge chute 9. It is configured so that outside air can be introduced into the opening 10A of the funnel 10,
The baking soda 6 dropped from the outlet 9A is sucked and sent to the feeder hose 8 together with the outside air sucked under a negative pressure from the gap C between the outlet chute 9 and the opening 10A of the funnel 10 in plan view. Is configured to
Spray type cleaning device. The spray-type cleaning apparatus according to claim 1, wherein a water supply hose (11) is connected near the nozzle (3B) of the spray gun (3), and water is sucked and sprayed with the injection of the baking soda (6). The spray type cleaning apparatus according to claim 1 or 2, wherein the particle size of the baking soda (6) is from 200 microns to 2 mm.

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