JPH061271Y2 - Cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a cleaning device, and more particularly to a cleaning device for spraying bubbles from a nozzle to clean an object to be cleaned such as a conveyor in a food factory. .

(Prior Art) Conventionally, as a cleaning device for spraying and cleaning bubbles, as shown in FIG. 5, a pump device (A) and a nozzle (B) and a pump device (A) and a nozzle (B) are communicated with each other. And a liquid feed pipe (C) for supplying the foaming liquid to the nozzle (B), and a negative pressure chamber communicating with the nozzle portion and the detergent source is provided in the middle of the liquid feed pipe (C). The ejector (D) is connected to an air supply path (E) whose one end communicates with a pressurized air source, and the pressurized water supplied from the pump device (A) to the liquid delivery pipe (C) is the ejector (D). When passing through, the detergent is sucked into the liquid feed pipe (C) from the detergent source, the sucked detergent is mixed with water in the liquid feed pipe, and the liquid feed pipe (C) is fed from the air supply unit (E). ) Inside, pressurized air is supplied, the detergent water in the liquid feeding pipe (C) is foamed by the pressurized air, and this foam is It is known that the nozzle (B) is sprayed onto the object to be cleaned to soften the dirt on the object to be cleaned by the penetrating force of the surfactant to clean the object.

When performing the foam cleaning as described above, a large-capacity water cleaning device different from the above-described foam cleaning device, that is, a pump device and a nozzle having a capacity larger than the discharge capacity of the pump device (A) in the foam cleaning device. And, by using a water cleaning device provided with a liquid feed pipe that communicates these pump device and nozzle, after cleaning the object to be cleaned with water in advance by this water cleaning device, perform foam cleaning by the foam cleaning device, Next, it is washed again with water by the water washing device. That is, in the case of cleaning with foam and water, without using a foam cleaning device and a water cleaning device, for example, the detergent suction from the ejector in the foam cleaning device is disabled, and the air supply path is closed to remove foam. When pressurized water is supplied from the pump device (A) in the cleaning device to the liquid delivery pipe, the object to be cleaned can be washed with water by jetting water from the nozzle (B).
In order to generate minute bubbles, a pump device with a discharge rate of 10 / min may be used.
Since washing efficiency is very poor for washing with water with a water flow rate of 1 / min, use a foam washing device with a pump device with a small discharge capacity and a water washing device with a pump device with a large discharge capacity as described above. The foam cleaning and the water cleaning are performed.

(Problems to be solved by the invention) However, in the related art, it is possible to perform foam cleaning by using a foam cleaning device having a pump device having a small discharge capacity and a water cleaning device having a pump device having a large discharge capacity. Since water cleaning is performed, it is necessary to dispose the liquid supply pipe and nozzle of the foam cleaning device and further dispose the liquid supply pipe and nozzle of the water cleaning device. Therefore, in the case where the liquid delivery pipe is branched into a plurality of parts and a plurality of objects to be washed at positions separated by a predetermined distance can be washed with bubbles and water, the number of liquid feed pipes and nozzles becomes very large. There is a problem that the parts cost and the installation cost are increased.

The present invention has been made in view of the above problems, and an object thereof is to be able to perform foam cleaning using a small capacity pump device, and yet to perform water cleaning with a large capacity of water, The point is to reduce the number of liquid supply pipes and nozzles by half.

(Means for Solving the Problems) Accordingly, the present invention is directed to a pump device (2) and a nozzle (3).
And a liquid feed pipe (4) for communicating the pump device (2) with the nozzle (3) and for supplying the foamable liquid to the nozzle (3), on the way of the liquid feed pipe (4) A cleaning device provided with an air supply path (6) for air for foaming the foamable liquid in the liquid supply pipe (4) to inject bubbles from the nozzle (3). In the middle of the liquid pipe (4), a water supply passage (7) for supplying pressurized water having a capacity larger than the discharge capacity of the pump device (2) is provided, and the water supply passage (7) and the air supply passage are provided. Directional control valve (23) for selectively opening one of (6) and the liquid supply path (4)
Is provided.

(Operation) The foaming liquid is supplied to the nozzle (3) through the liquid supply pipe (4) by driving the pump device (2), and the air supply passage (6) is supplied by the directional control valve (23). When is selected, air is supplied from the air supply passage (6) into the liquid supply pipe (4), the foamable liquid in the liquid supply pipe (4) is foamed, and ejected from the nozzle (3). Is done. When the water supply passage (7) is selected by the directional control valve (23), a large amount of water is supplied from the water supply passage (7) into the liquid delivery pipe (4), and the water is supplied to the nozzle ( Since it is sprayed from 3), the object to be cleaned can be washed with bubbles and water.

(Embodiment) In the embodiment shown in FIG. 1, a drive source (1) such as a motor is used.
A pump device (2) and a nozzle (3) that are interlocked with the driving of the pump, and a liquid delivery pipe (4) that connects the pump device (2) and the nozzle (3) to each other. Is provided with an ejector (5) having a negative pressure chamber (52) communicating with the foamable liquid source (11) via the nozzle portion (51) and the suction pipe (10), and the liquid delivery pipe (4) At the nozzle (3) side of the ejector (5), an air supply path (6), one end of which communicates with a pressurized air source (12) such as a compressor, is connected, and liquid is sent from the pump device (2). When the pressurized liquid supplied to the pipe (4) passes through the ejector (5), the suction pipe (1) flows from the foamable liquid source (11).
0) sucking the foaming liquid into the liquid feeding pipe (4), mixing the sucked foaming liquid in the liquid feeding pipe (4), and feeding the liquid feeding pipe (6) from the air supply passage (6). Pressurized air is supplied into (4), the expandable liquid in the liquid feed pipe (4) is foamed by the pressurized air, and the foam is generated by the nozzle (3).
The water supply passage (7) for supplying pressurized water having a volume larger than the discharge volume of the pump device (2) to the open portion of the air supply passage (6) in the liquid delivery pipe (4) ) Are provided in series, and one of the water supply passage (7) and the air supply passage (6) is provided in the middle of the water supply passage (7) and the air supply passage (6). The directional control valve (23) including the check valves (23a) and (23b) for selectively opening is provided in 4).

In the above structure, the ejector (5) has the nozzle portion (5) having a diameter smaller than the inner diameters of the suction passage and the outlet passage between the suction passage (5a) and the outlet passage (5b) as shown in FIG.
1) and throat (53), these nozzles (5
The negative pressure chamber (52) is provided between 1) and the throat portion (53), and when the pressurized liquid in the liquid supply pipe (4) passes through the nozzle portion (51), the negative pressure chamber The pressure chamber (52) becomes a negative pressure, and the foamable liquid is sucked into the negative pressure chamber (52) from the foamable liquid source (11).

Further, for example, a jet pump (9) is connected to the inlet of the water supply passage (7), and a large volume of water is sent from the water supply passage (7) to the liquid feed pipe (4) by the jet pump (9). I am trying to supply it to.

The jet pump (9) basically has the same structure as the ejector (5), and as shown in FIG. 3, the communication pipe (8).
A suction path (9) connected to the middle of the liquid sending pipe (4) via
a) and an outlet passage (9b) connected to the water supply passage (7), between the nozzle portion (91) having a diameter smaller than the inner diameters of the suction passage and the outlet passage and the nozzle portion (91). It has a large-diameter throat portion (93) smaller than the outlet passage, and the negative pressure chamber (92) is provided between the nozzle portion (51) and the throat portion (93). When the pressurized liquid supplied from (8) to the suction passage (9a) passes through the nozzle portion (91), the negative pressure chamber (92) becomes a negative pressure, and the water source (14) causes the water suction pipe (13) to flow. After that, a large amount of water is sucked into the negative pressure chamber (92), and this water is pumped from the outlet passage (9b) into the water supply passage (7). still,
The communication passage (8) is connected to a three-way switching valve (30) provided on the pump device (2) side of the liquid delivery pipe (4) with respect to the ejector (5) to switch the switching valve (30). Thus, the pressurized liquid in the liquid feed pipe (4) is supplied to the jet pump (9).

Further, the liquid supply pipe (4) is formed such that the thickness between the ejector (5) and the nozzle (3) is thicker than the thickness between the pump device (2) and the ejector (5). The foamable liquid sucked from the ejector (5) into the liquid supply pipe (4) is easily mixed with water, and a large amount of water supplied from the water supply passage (7) is supplied to the nozzle (3). ). A pressure control valve for controlling the pressure of the pressurized liquid pressurized by the pump device (2) on the pump device (2) side of the liquid transfer pipe (4) with respect to the switching valve (30). (15) is provided, and the spillage port of the control valve (15) is connected to the water source (14) through the spillway (16) and one of the pressurized liquids pressurized by the pump device (2). All or part of the water is returned to the water source (14).

Further, in the figure, (17) is a suction pipe having one end connected to the suction port of the pump device (2) and the other end communicating with the water source (14), (18) and (19) open / close valves, and (20). Is a pressure regulating valve for regulating the pressure of the pressurized air supplied from the pressurized air source (12) to the air supply passage (6), and (21) is a foaming liquid flowing in the supply pipe (10). A throttle valve for adjusting the flow rate, and (22) is a check valve.

The cleaning apparatus configured as described above has, for example, a discharge capacity of 10
/ Min can be used to generate fine bubbles of 100 / min, and the discharge capacity of 10 / min from the jet pump (9) into the water supply passage (1). A large amount of water of about 90 / min can be supplied.

Then, when cleaning a cleaning object such as a conveyor with foam, the on-off valves (18) (19) are closed and the switching valve (30) is closed.
Switches to the side where the communication passage (8) is closed. When the pump device (2) is driven to supply the pressurized liquid in the liquid feed pipe (4) from the pump device (2), this pressurization is performed. When the liquid is ejected from the nozzle portion (51) of the ejector (5) to the throat (53), the negative pressure chamber (52) becomes negative pressure, and the suction pipe (10) is inserted into the negative pressure chamber (52). Through a foamable liquid source (1
The effervescent liquid of 1) is sucked, the effervescent liquid and the pressurized liquid are mixed in the outlet side passage of the ejector (5), and the pressurized air source (12) and the air supply passage (6) The foamable liquid is foamed by the pressurized air supplied to the ejector outlet side passage of the liquid supply pipe (4) through the stop valve (23b) to form fine bubbles of 100 / min, and the nozzle (3)
Is sprayed onto the article to be cleaned with bubbles of 100 / min.

The on-off valve (18) is used when the object to be cleaned is washed with water in advance before being washed with foam and when it is washed again with water after foam washing.
Is opened, the on-off valve (19) is closed, the switching valve (30) is switched to the side where the communication passage (8) is opened and the ejector (5) side is closed, and the pump device (2) is driven, When the pressurized liquid is supplied from the pump device (2) into the liquid supply pipe (4), the pressurized liquid flows from the switching valve (30) to the communication passage (8), and the pressurized liquid is jet pump (9). ) Nozzle part (9
When it is injected into the throat (93) from (1), the negative pressure chamber (9
2) becomes a negative pressure, and the water suction pipe (1
A large amount of water from the water source (14) is absorbed via 3), and this large amount of water is supplied from the water supply passage (7) to the ejector outlet side passage of the liquid delivery pipe (4) via the check valve (23a). The water is sprayed from the nozzle (3) onto the object to be cleaned with 100 / min of water.

Therefore, according to the present invention, it is possible to perform bubble cleaning with bubbles of 100 / min by using, for example, a pump device having a discharge rate of 10 / min, and further, a part of the liquid feeding pipe (4) and (3). ) Can be shared and washed with 100 / min of water.

In the case of performing the bubble cleaning and the water cleaning as described above, an electrically conductive valve is used as the switching valve (30) and the on-off valves (18) and (19) to enable automatic switching, and the bubble cleaning and the water cleaning are performed. The switching to cleaning may be automated.

Further, in the embodiment described above, in the middle of the liquid feeding pipe (4),
Although the ejector (5) is provided to suck the foamable liquid of the foamable liquid source (11) into the liquid feed pipe (4), in addition to the water source (14) as shown in FIG. The foamable liquid source (11) is arranged in the middle of the suction pipe (17), and the middle of the suction pipe (17) is branched via a switching valve (25).
The tip of the branch passage (17a) is connected to the foamable liquid source (1
1), and by switching the switching valves (30) (25), the pump device (2) to the liquid delivery pipe (4),
It may be configured to selectively supply one of the foaming liquid and water.

Further, the air supply passage (6) is connected to a pressurized air source (12) such as a compressor, and is also connected to an ejector (26) having a negative pressure chamber communicating with the nozzle portion and the atmosphere as shown in FIG. Then, the ejector (26) is provided in the middle of the liquid feeding pipe (4) so that the liquid feeding pipe (4) is moved from the ejector (26).
It may be configured such that air is sucked into the inside of the liquid supply pipe (4) to foam the foamable liquid.

(Effect of the Invention) As described above, according to the present invention, it is possible to perform bubble cleaning with a sufficient amount of bubbles using a small-capacity pump device, and further, to supply a bubble with a liquid delivery pipe (4). It is possible to efficiently wash water with a large amount of water by commonly using the nozzle (3) for jetting. For this reason, it is possible to eliminate the need for a liquid-feeding pipe dedicated to water feeding and a nozzle dedicated to water-jetting, and a liquid-feeding pipe (compared to a conventional one that performs foam cleaning and water cleaning using a foam cleaning device and a water cleaning device). 4) and the number of nozzles (3) can be halved, and the component cost and the installation cost can be reduced accordingly, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an embodiment of the cleaning device of the present invention,
2 is a sectional view of only the ejector portion, FIG. 3 is a sectional view of only the jet pump portion, FIG. 4 is a schematic explanatory diagram showing another embodiment, and FIG. 5 is an explanatory diagram of a conventional example. (2) ... pump device (3) ... nozzle (4) ... liquid supply pipe (6) ... air supply path (7) ... water supply path (23) ... directional control valve

Claims (1)

[Scope of utility model registration request] 1. A pump device (2) and a nozzle (3), and these pump device (2) and nozzle (3) are communicated with each other, and
A liquid feed pipe (4) for supplying a foaming liquid to the nozzle (3), and the liquid feed pipe (4) is provided in the middle of the liquid feed pipe (4).
A cleaning device provided with an air supply path (6) for air for foaming the foamable liquid therein, and injecting bubbles from the nozzle (3), in the middle of the liquid supply pipe (4), A water supply passage (7) for supplying pressurized water having a capacity larger than the discharge capacity of the pump device (2) is provided, and the water supply passage (7) is provided.
And one of the air supply passage (6) and the liquid supply passage (4)
A cleaning device, characterized in that a direction control valve (23) for selectively opening the cleaning device is provided.