JP4317724B2 - Defoamer supply device in sewage water absorption system - Google Patents

Description

  The present invention belongs to the technical field of a sewage water absorption system that can absorb cleaning sewage remaining on a cleaned floor surface, carpet, etc., and a sewage water absorption system used in a floor surface cleaning machine that cleans the floor surface. Specifically, the present invention relates to an antifoaming agent supply device suitable for use in various sewage water absorption systems.

  In the sewage water absorption system used for the sewage water absorption machine and the floor surface washing machine, in order to prevent the generation of bubbles from the sewage collected in the sewage collection tank, the sewage container, etc., as shown in Patent Document 1 and Patent Document 2, for example, silicone An antifoaming agent such as a system emulsion is supplied to the tank or container so as to eliminate the foam.

  That is, in the “water suction port of an electric vacuum cleaner” described in Patent Document 1, the antifoaming agent that has flowed down to the suction port 1 of the vacuum cleaner is sucked by the vacuum cleaner that is generated in the venturi portion provided in the suction port 1. A structure is described in which the generation of bubbles in the sewage container is prevented by using the force to be sucked into the air-water suction pipe and collected in the sewage container together with the sewage.

  Further, in the “automatic defoamer supply device for washing machine” described in Patent Document 2, a suction hose is led from the defoamer tank into the sewage recovery hose, and is generated in the sewage recovery hose at the time of sewage recovery. In addition, a configuration is described in which an antifoaming agent is sucked up from an antifoaming agent tank and mixed into sewage using negative pressure.

  However, according to the above-mentioned Patent Document 1, the antifoaming agent is configured to flow downward from the bottom of the antifoaming agent tank via the antifoaming agent downflow pipe. The agent is sucked into the air / water suction pipe where the suction force is exerted, but when the operation is stopped, the suction force disappears in the air / water suction pipe, and the defoaming agent flowing down is not sucked into the air / water suction pipe. There is a problem that the air flows out from the suction port 1 as it is.

Moreover, according to said patent document 2, using the negative pressure in the collection | recovery hose 8, it is attracted | sucked in the collection | recovery hose 8 from the antifoamer tank 12 via the suction hose 10, and it collects, mixing with sewage. because there, the change in negative pressure occurring in the change in the attraction state of the washing machine occurs return hose 8, variations in the supply of the defoaming agent is caused, in some cases it may not be supplied antifoam. In addition, there is a problem that a difference occurs in the amount supplied depending on the position of the antifoaming agent tank and the amount of the antifoaming agent.
JP 52-22371 A JP-A-11-216092

  Therefore, the technical problem of the present invention is that a stable amount of antifoaming agent can be supplied during operation of a sewage water absorber or floor cleaning machine, and the defoaming agent can be reliably supplied when operation is stopped. An object of the present invention is to provide an antifoaming agent supply device in a sewage water absorption system which is devised so as to stop and prevent the antifoaming agent from flowing out.

  Means taken in the present invention to solve the above technical problem are as follows.

(1) As described in claim 1, after washing sewage generated by washing dirt on the floor surface and carpet, it is sucked into a sewage collection tank through a sewage collection hose after being sucked by a squeegee that can be sucked by a blower. In addition, in the sewage water absorption system configured to inject bubbles in the sewage recovery tank by injecting an antifoaming agent into the squeegee or the recovery hose, the airframe equipped with the above sewage water absorption system. The defoamer tank provided in the defoamer, a tube pump for injecting the defoamer from the defoamer tank through the injection hose into the squeegee or the sewage recovery hose, and the tube pump in conjunction with the operation of the blower. of the predetermined time driven at time intervals, as well as composed of a control unit for intermittently injecting an antifoaming agent through the injection hose to squeegee or return hose, over Prior to intermittent supply of the antifoaming agent by the tube pump, the applied voltage to the motor of the tube pump is increased for a certain time to increase the supply amount of the antifoaming agent for a certain time. It is characterized by having a feed function .

(2) As described in claim 2, the controller is provided with a switching function for changing the drive time interval and drive time of the tube pump.

  Ideally, continuous supply of the antifoaming agent is desirable, but continuous supply of several cc of antifoaming agent is rarely present in currently distributed pumps. Moreover, even if it exists, it is extremely expensive and has a problem in cost.

  Therefore, if a tube pump with a supply amount of about 20 cc per minute is controlled to perform intermittent energization of 2.5 seconds at 10 second intervals, for example, 5 cc of defoaming agent can be supplied per minute. . In addition, the defoaming effect is slightly inferior to continuous supply, but it is a level that does not affect actual use, and a sufficient defoaming effect can be expected.

  Furthermore, if the collection hose or the collection tank is empty as at the beginning of startup, the feed voltage is increased to 40 cc / 1 minute by increasing the voltage applied to the tube pump, thereby shortening the feed time and quickly turning it off. By providing a feed function that can be filled with a foaming agent, the generation of foam during start-up is prevented.

  As described above, according to the defoaming agent supply device in the sewage water absorption system according to the present invention, the defoaming agent can be stably supplied using a relatively inexpensive tube pump. enable. In addition, since the tube pump is driven in conjunction with the operation of the blower, it solves the problem that the antifoaming agent flows out of the squeegee after the operation of the blower is stopped, and stably supplies a defoaming agent in a predetermined amount at all times. An excellent defoaming effect can be exhibited.

  Hereinafter, an embodiment of an antifoaming agent supply device in the sewage water absorption system according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of a sewage water absorber showing an example of the present invention, and FIG. FIG. 1 is a front view of the sewage water absorber shown in FIG. 1 as a whole, 2 is a sewage recovery tank provided on the upper side of the machine 1, 3 is an upper lid of the tank, 4 and 5 are A traveling wheel provided on the lower side of the body 1.

  6 is an operation handle provided at the rear of the machine body 7, 7 is a blower for sucking sewage provided inside the sewage recovery tank 2, 7M is a motor for the blower, 7T is a suction action of the blower 7, and An intake pipe acting on the inside, 8 is a sewage recovery hose, and its root end is connected to the upper part of the sewage recovery tank 3 through a fitting hole 1A provided in the upper front surface of the airframe 1, and the suction action of the blower 7 Is applied to the squeegee 9 for sucking sewage attached to the lower end portion of the sewage recovery hose 8. F indicates the floor surface with which the squeegee 9 is in contact.

  9H is a connection port of the sewage recovery hose 8 protruding from the upper surface of the squeegee 9, 10 is a lifting lever for the squeegee 9, 11 is a sewage drain hose connected to the sewage recovery tank 2, 11A is its drain port, 12 is An antifoaming agent tank installed in a tank housing 13 provided in the machine body 1, and an antifoaming agent Z (see FIG. 4) such as a silicone emulsion is accommodated in the tank 12.

  Further, 14 is a known tube pump provided in the body 1, 14A is a defoaming agent injection hose for connecting the suction port 14Ca (see FIG. 3) of the tube pump 14 and the defoaming agent tank 12, and 14B is A defoaming agent supply hose that connects the discharge port 14Cb (see FIG. 3) of the tube pump 14 and the connection port 9H of the squeegee 9 or the sewage recovery hose 8, and 15 is an electric system control including the tube pump 14. , 16 is a battery constituting the power supply unit, and 17 is a main switch. In FIG. 2, reference numeral 1 </ b> B denotes insertion holes for the hoses 14 </ b> A and 14 </ b> B that are opened on the lower front side of the body 1.

  FIG. 3 is a configuration diagram illustrating the configuration of the tube pump 14 and the state of operation thereof. In the drawing, reference numeral 14E denotes a rotating shaft that is rotated clockwise in the drawing by a pump motor 14M (see FIG. 4). , 14X is a rotor attached to the rotating shaft 14E, 14Xa and 14Xb are rollers attached to the rotor 14X, 14S is a pump case in which the rotor 14 is rotatably stored, and 14 'is a circle between the rotor 14X and the pump case 14S. The fitting groove 14C formed in the shape is a tube fitted in the fitting groove 14C. The defoamer injection hose 14A described above is connected to the suction port 14Ca of the tube 14C, and the discharge port 14Cb of the tube 14C. Is connected to the antifoam supply hose 14B described above.

  3 (a), (b), (c), and (d) illustrate the state of the discharge and suction of the antifoaming agent by the rotation of the rotor 14 in order, and the rotor 14 is rotated in the clockwise direction. , The rollers 14Xa and 14Xb rotate in the clockwise direction along the tube 14C. When the rotor 14X rotates, the tube 14C is completely compressed by the rollers 14Xa and 14Xb. Therefore, the antifoaming agent Z in the tube 14C is forcibly discharged toward the discharge port 14Cb, and the restoring force of the compressed tube 14C. The antifoaming agent Z is sucked from the suction port 14Ca by the vacuum action generated by.

By repeating the rotation of the rotor 14X, the antifoaming agent Z in the antifoaming agent tank 12 is intermittently supplied to the hose connection port 9H of the squeegee 9 or the sewage recovery hose 8 side. The antifoaming agent Z can be supplied to the cleaning wastewater BM (see FIG. 4) to prevent generation of bubbles.

  FIG. 4 is a block diagram illustrating the electrical configuration of the present invention. The controller 15 that controls and drives the motor 14M of the tube pump 14 has three positions, large, small, and stop, with respect to the changeover switch 15S. Contacts 15A, 15B and 15C are provided, and the tube pump 14 is controlled and operated in accordance with the switching operation of the selector switch 15S. In FIG. 4, the same members as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof is omitted.

  That is, when the changeover switch 15S is connected to the “large” contact 15A, the motor 14M operates at intervals of 6 seconds every 6 seconds according to the control program shown in FIG. Supplies the antifoaming agent Z intermittently. Further, when the changeover switch 15S is connected to the “small” contact 15B, the motor 14M is operated every 2 seconds at a stop interval of 8 seconds according to the program of FIG. 5, and the tube pump is supplied at a rate of 5 cc / 1 minute. 14 intermittently supplies antifoam Z.

When the main switch 17 is turned OFF, the motors 7M and 14M of the blower 7 and the tube pump 14 are stopped together, and the suction of the sewage BM and the supply of the defoaming agent Z are stopped at the same time. ”Is connected to the contact 15C of the tube pump 14, only the motor 14M of the tube pump 14 is stopped, and the supply of the antifoaming agent Z is stopped. On the other hand, when the changeover switch 15S is switched from the “stop” contact 15C to the “large” or “small” contacts 15A, 15B, the antifoaming agent Z is supplied quickly as shown in FIG. As in the program, the feed mode in which the applied voltage is raised and the motor 14M of the tube pump 14 is continuously rotated for about 20 seconds is executed, and the tube pump 14 feeds a large amount of antifoaming agent Z at a rate of 40 cc / 1 minute. After shortening the time, it is structured to return to the normal “large” or “small” intermittent supply. In the figure, reference numeral 18 denotes a power supply unit of the apparatus including the battery 16.

Therefore, according to the present invention, bubbles are generated by stably supplying the defoamer Z in an amount of 5 cc to 10 cc per minute to the cleaning sewage BM in the sewage recovery tank 2 by using a relatively inexpensive tube pump 14. Can be reliably prevented.

The side view of the sewage water absorption machine with which the antifoamer supply apparatus which concerns on this invention was implemented. The front view of a sewage water absorber. Explanatory drawing explaining the structure of the tube pump and its operating state. The block diagram explaining the electrical constitution in the present invention. The conceptual diagram of the program for control used by this invention.

1 Airframe of sewage water absorber 2 Sewage collection tank
BM sewage 7 Blower 8 Sewage recovery hose 9 Squeegee 12 Defoamer tank Z Defoamer 14 Tube pump 14A Defoamer injection hose 14B Defoamer supply hose 15 Control unit

Claims (2)

Washed sewage generated by washing dirt on the floor or carpet is sucked with a squeegee that can be sucked by the blower, and then collected in a sewage recovery tank through the sewage recovery hose. In a sewage water absorption system configured to inject defoaming agent to prevent foam generation in the sewage recovery tank,
An antifoaming tank provided in the airframe equipped with the sewage water absorption system,
A tube pump for injecting an antifoaming agent from the antifoaming agent tank into the squeegee or the sewage recovery hose through an injection hose;
In conjunction with the operation of the blower, the tube pump is driven at a predetermined time interval for a predetermined time, and is configured by a control unit that intermittently injects the antifoaming agent through the injection hose into the squeegee or the recovery hose ,
Prior to intermittent supply of antifoaming agent by the tube pump to the control unit, the voltage applied to the motor of the tube pump is increased for a certain period of time to increase the supply amount of the antifoaming agent for a certain period of time. An antifoaming agent supply device in a sewage water absorption system, characterized by having a feed function . 2. The defoamer supply device in a sewage water absorption system according to claim 1, wherein the controller is provided with a switching function for changing the drive time interval and drive time of the tube pump.