JP2006346611A - Washing liquid spraying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing liquid spraying apparatus capable of excellently foaming a washing liquid and excellent in the handleability. <P>SOLUTION: The washing liquid spraying apparatus comprises a container 1 for storing a foaming washing liquid, a suction pipe 2 for sucking the washing liquid in the container 1 at negative pressure of compressed air, and a nozzle 3 for jetting the washing liquid sucked by the suction pipe together with the compressed air through a jetting port 17. The nozzle 3 is made to have a large-diameter part 18a with a larger inner diameter than that of the suction pipe from the suction pipe side to the jetting port side and a taper part 18b in which the distance from a straight line 19 between the cross-sectional center of the suction pipe and the cross-sectional center of the jetting port to the inner wall face is made gradually smaller toward the jetting port side and a porous foaming promoting member 20 is disposed in the taper part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cleaning liquid ejecting apparatus that can foam well and spray a foaming cleaning liquid and is suitable for use in a car wash or the like.

  2. Description of the Related Art In a gas station, a car wash station, and the like, washing is performed by injecting foaming cleaning liquid containing detergent, wax and the like onto a vehicle body in a foamed state. The cleaning liquid ejecting apparatus used at that time is roughly classified into a large-sized one that is incorporated in a stationary car wash machine and a small-type one that is manually operated by a gun type. Among these, the small ones have the advantage of being relatively inexpensive without taking up space, but have the disadvantage that the cleaning liquid does not foam well and the cleaning power cannot be fully exhibited.

One countermeasure against this difficulty is described in Patent Document 1. That is, by passing a mist-like cleaning liquid together with a compressed gas through a porous member, the cleaning liquid and the compressed gas are mixed and foamed into a cream.
JP 2001-347238 A

  However, the apparatus described in Patent Document 1 (“foaming cleaning apparatus”) seems to have the following problems.

  The first problem is about the foaming action. In the casing of this device, the cross-sectional area of the enlarged portion in which the porous member is accommodated is extremely larger than the introduction portion and the lead-out portion, and the cross-sectional area changes between the enlargement portion and the lead-in portion and between the enlargement portion and the lead-out portion Is steep. When the casing has this shape, the flow of the mist-like cleaning liquid and the compressed gas passing through the porous member is fast at the center portion connecting the introduction portion and the lead-out portion, and slows away from the center portion. It is presumed that the state of the bubbles is unstable due to the difference in state and lack of uniform smoothness as a whole, and turbulence in the vicinity of the introduction portion and the discharge portion around the enlargement portion.

  The second problem is the handling of the device. That is, as pointed out in the first problem, the casing enlargement part is extremely large, so when the foamed cleaning liquid is sprayed onto the object to be cleaned, it is difficult to visually recognize the spraying position because the casing becomes an obstacle. It is expected to become an obstacle to doing.

  It is an object of the present invention to provide a cleaning liquid ejecting apparatus that solves problems found in conventional apparatuses, can foam the cleaning liquid satisfactorily, and is excellent in handleability.

  In order to solve the above problems, the present invention is configured as follows. That is, the cleaning liquid ejecting apparatus according to claim 1 includes a container that stores foaming cleaning liquid, a suction pipe that circulates compressed air in a certain direction and sucks the cleaning liquid in the container with the negative pressure of the compressed air. A nozzle for injecting the cleaning liquid sucked by the suction pipe from the injection port together with the compressed air, and the nozzle has a large-diameter portion having an inner diameter larger than that of the suction pipe from the suction pipe side to the injection port side, A taper portion having a smaller distance from the straight line connecting the cross-sectional center of the suction pipe and the cross-sectional center of the injection port to the inner wall surface is formed in order toward the injection port side, and a porous foam promoting member is inserted into the taper portion. It is characterized by that.

  According to this configuration, the cleaning liquid in the container is sucked by the negative pressure of the compressed air flowing in the suction pipe in a certain direction, and the sucked cleaning liquid is diffused by being discharged to the large-diameter portion of the nozzle to form a mist-like shape. When the atomized cleaning liquid passes through the porous foam promoting member, the cleaning liquid and the compressed air are mixed and foamed. The foamed cleaning liquid is ejected from the nozzle nozzle. Since the tapered portion has the shape described above, the flow of the cleaning liquid passing through the foam promoting member is smooth, there is no speed difference due to the difference in the passing position, and turbulent flow in the vicinity of the ejection port does not occur. For this reason, foaming is performed uniformly and efficiently.

  Moreover, since the flow of the cleaning liquid is smooth and the foaming efficiency is good as described above, the outer shape of the nozzle can be reduced.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, a plurality of communication holes having the same shape and the same size are arranged in an aligned state between the injection port and the foam promoting member. It was set as the structure by which the made net-like foam stabilization member was inserted.

  With this configuration, when the foamed cleaning liquid passes through the communication holes of the foam stabilizing member, the size and arrangement of the bubbles are made uniform, so that the foam of the cleaning liquid to be sprayed becomes uniform and stabilized.

  In the cleaning liquid ejecting apparatus according to the present invention, the mist-like cleaning liquid smoothly flows and passes through the foam promoting member, and the foam size and arrangement are aligned when the foamed cleaning liquid passes through the communication hole of the foam stabilizing member. As a result, uniform and stable bubbles of the cleaning liquid are jetted. In addition, since the outer shape of the nozzle can be reduced, it becomes easier to perform the cleaning liquid injection work.

  A container for storing foaming cleaning liquid, a suction pipe for circulating compressed air in a certain direction and sucking the cleaning liquid in the container with the negative pressure of the compressed air, and the cleaning liquid sucked in the suction pipe together with the compressed air And a nozzle that injects from an injection port. The nozzle has a large-diameter portion having an inner diameter larger than that of the suction tube from the suction tube side to the injection port side, and a distance from the straight line connecting the cross-sectional center of the suction tube and the cross-sectional center of the injection port to the inner wall surface. Smaller taper portions are formed in order toward the side. And the porous foaming promotion member is inserted in this taper part. Further, a net-like foam stabilizing member in which a plurality of communication holes having the same shape and the same size are arranged in an aligned state is inserted between the injection port and the foam promoting member.

  1 and 2 show an embodiment of the best mode, FIG. 1 is an overall view thereof, and FIG. 2 is a sectional view of a main part thereof. In the figure, A is a cleaning liquid spray gun which is a cleaning liquid spray device, 1 is a container, 2 is a suction tube, and 3 is a nozzle.

  Reference numeral 4 denotes an air introduction pipe which also serves as a grip for holding the cleaning liquid ejecting apparatus A, and an air hose 5 connected to a compressed air supply means (not shown) is connected to one end thereof, and a suction pipe 2 is connected to the other end. ing. When the injection lever 6 is operated, the open / close valve 7 is opened, and the compressed air supplied through the air hose 5 is discharged from the air discharge port 8 into the suction pipe 2. A main plug 9 for blocking the supply of compressed air is provided at a connection portion with the air hose 5.

  The suction pipe 2 is a pipe having an elongated air passage 10, and the air discharge port 8 is opened at an end of the air introduction pipe 4 inserted into the air passage 10. A cleaning liquid suction port 11 communicating with the inside of the cleaning liquid container 1 is opened on the side wall on the downstream side in the air discharge direction from the air discharge port 8.

  The container 1 includes a container main body 12 and a lid 13 that is detachably attached to the upper portion of the container main body with screws, and is connected to the suction tube 2 by a connecting portion 14 formed integrally with the lid 13. Has been. A suction hose 15 connected to the cleaning liquid suction port 11 hangs down in the container 1, and a cleaning liquid intake member 16 is attached to the lower end thereof. An air hole (not shown) that communicates the inside and outside of the container 1 is formed in the lid 13. As the cleaning liquid B to be put in the container 1, a detergent alone or a mixture of detergent and wax is used. By removing the container body 12 from the lid 13, the cleaning liquid can be replenished and replaced.

  The nozzle 3 includes a casing 18 having one end connected to the suction tube 1 and the other end formed with an injection port 17. The casing 18 is a cylindrical body having a circular cross section with a straight line 19 connecting the cross-sectional center of the suction pipe 1 and the cross-sectional center of the injection port 17 as a central axis, and the suction pipe 1 from the suction pipe side toward the injection port side. A large-diameter portion 18a having a larger inner diameter than the inner diameter portion, and a tapered portion 18b successively formed in succession to the large-diameter portion and gradually decreasing toward the injection port side are formed. The casing 18 is divided into two parts, a member constituting the large diameter portion 18a and a member constituting the taper portion 18b, and both members are integrated by screws.

  Reference numeral 20 denotes a foam accelerating member, which is inserted in the tapered portion 18b so that there is almost no gap between the inner wall and the space 21 between the injection port 17 and the taper portion 18b. In this charged state, the O-ring 22 restricts the movement of the foam promoting member 20 toward the suction pipe. The foam promoting member 20 is suitably made of a porous material in which a large number of holes are densely packed, such as sponge. The size of the hole (mesh roughness) may be selected according to the type of cleaning liquid used. For example, when a detergent is used alone as the cleaning liquid, a foam promoting member having a relatively coarse opening is preferable, and when a mixed liquid of a detergent and wax is used as the cleaning liquid, a foam promoting member having a relatively fine mesh is preferable. Since the casing 18 is separable into the large diameter part 18a and the taper part 18b, replacement | exchange of the foaming promotion member 20 is easy.

  A foam stabilizing member 23 is provided in the space 21 so as to divide the space into a foam promoting member side and an injection port side. The foam stabilizing member 23 has a net shape in which a plurality of communication holes 23a,... Having the same shape and the same size are arranged in an aligned state. The size of the communication hole 23a may be selected according to the roughness of the foam promoting member 20. For example, as shown in FIG. 3, if the foam stabilizing member 23 is formed into a bowl shape and attached to the foam promoting member 20, the foam stabilizing member 23 can be easily positioned and replaced.

  The cleaning liquid spray gun A is configured as described above, and in use, the spray lever 6 is operated with the nozzle 3 facing the object to be cleaned. Then, the compressed air supplied from the compressed air supply means is introduced into the air introduction pipe 4, and the compressed air is discharged from the air discharge port 8 of the air introduction pipe to the air passage 10 of the suction pipe 2. As the compressed air flows through the air passage 10 in a certain direction, the cleaning liquid B in the container 1 is sucked by the negative pressure. The sucked cleaning liquid is discharged into the large diameter portion 18a of the nozzle 3 together with the compressed air. As a result, the cleaning liquid diffuses and atomizes.

  When the atomized cleaning liquid passes through the porous foaming promotion member 20, the cleaning liquid and the compressed air are mixed and foamed. Since the taper portion 18b of the casing 18 in which the foam promoting member 20 is inserted has a circular cross section and the inner diameter gradually decreases toward the injection port, the flow of the cleaning liquid and the compressed air passing through the foam promoting member 20 is as follows. Thus, each part is almost evenly gathered toward a straight line 19 connecting the cross-sectional center of the suction pipe 1 and the cross-sectional center of the injection port 17. For this reason, there is no speed difference due to the difference in passing position, and foaming is performed uniformly and efficiently.

  The cleaning liquid foamed by the foam accelerating member 20 passes through the communication holes 23a, ... of the foam stabilizing member 23 and moves to the injection port 17 side. At this time, since the size and arrangement of the bubbles are made uniform, the foam cleaning solution is made uniform and stabilized. And this foaming washing | cleaning liquid is injected toward the washing | cleaning target object from the injection nozzle 17. FIG.

  Although the above embodiment is a gun-type cleaning liquid ejecting apparatus, the present invention can also be applied to a large cleaning liquid ejecting apparatus provided in a stationary type car wash machine or the like.

1 is an overall view of a cleaning liquid ejecting apparatus. It is sectional drawing of the principal part of a washing | cleaning-liquid injection apparatus. It is a perspective view of a foam promotion member and a foam stabilization member.

Explanation of symbols

A Cleaning liquid injection gun (cleaning liquid injection device)
B Cleaning liquid 1 Container 2 Suction pipe 3 Nozzle 4 Air introduction pipe 17 Injection port 18 Casing 18a Large diameter portion 18b Tapered portion 19 Straight line connecting the center of the cross section of the injection port 20 Foam promoting member 23 Foam stabilization member

Claims (2)

  A container for storing foaming cleaning liquid, a suction pipe for circulating compressed air in a certain direction and sucking the cleaning liquid in the container with the negative pressure of the compressed air, and the cleaning liquid sucked in the suction pipe together with the compressed air A nozzle that injects from an injection port, and the nozzle has a large-diameter portion having an inner diameter larger than that of the suction tube from the suction tube side to the injection port side, and a cross-sectional center of the suction tube and a cross-sectional center of the injection port. A cleaning liquid ejecting apparatus, wherein a taper portion having a smaller distance from the connecting straight line to the inner wall surface is formed in order toward the ejection port side, and a porous foam promoting member is inserted into the taper portion. 2. The cleaning liquid jet according to claim 1, wherein a reticulated foam stabilizing member in which a plurality of communication holes having the same shape and the same size are arranged in an aligned state is inserted between the jet opening and the foam promoting member. apparatus.

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