JPH0258388B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention automatically detects the degree of contamination of a cleaning liquid in a cleaning liquid tank used during continuous cleaning of fabrics, and improves the degree of contamination of the cleaning liquid. The present invention relates to a sensor for detecting contamination of a cleaning liquid in a fabric washing apparatus, which is capable of increasing the cleaning effect of the fabric by the cleaning liquid in the cleaning liquid tank by adding fresh water to the cleaning liquid.

[Background of the invention]

After a long length of industrially produced fabric is subjected to treatments such as pretreatment and contamination treatment, it is necessary to wash the fabric following these treatments. Therefore, in the past, various cleaning devices have been developed to effectively clean these long fabrics. Conventional cleaning devices of this type can be roughly divided into immersion type, in which the fabric is continuously passed through a cleaning liquid tank filled with cleaning liquid, and water jet type, in which cleaning water is sprayed towards the fabric as it is continuously transferred. However, in the former type of immersion type washing apparatus, the washing water in the liquid tank becomes contaminated as time passes for washing the fabric, and the washing effect gradually decreases. In addition, in the latter type of water jet type washing device, since fresh water is constantly applied towards the fabric, a large amount of fresh water is consumed.
There were problems from the perspective of water resources. Therefore, in view of this problem, the inventor of the present invention detected the degree of contamination of the washing water in the washing water tank in which the fabric to be washed is immersed and passed through the washing water by the amount of transmitted light of the waste water using a sensor that transmits and receives light. , when the degree of contamination of the washing water is increased above a predetermined set value, fresh water is added to the washing water to enhance the cleaning effect of the fabric, and to achieve conservation of water resources. We have previously developed a continuous fabric cleaning device that allows for continuous washing of fabrics, but especially when washing dyed fabrics,
Sewage of various types and colors is generated, and depending on the color of the sewage or the concentration of contamination, it may be difficult to accurately detect the degree of contamination using transmitted light.

[Purpose of the invention]

The present invention has been made in view of the above,
It is an object of the present invention to provide a cleaning liquid contamination level detection sensor that can always properly detect the contamination state of the sewage no matter how the color, concentration, etc. of the sewage change.

[Embodiments of the invention]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments shown in the drawings. First, a fabric cleaning apparatus equipped with a cleaning fluid contamination level detection sensor of this embodiment will be described.

1 is a long fabric to be washed; 2 is a washing tank through which the fabric 1 is continuously passed; guide rolls 3 are arranged in the washing tank 2 to guide and transport the fabric 1 in a meandering manner; The fabric 1 is transported through the washing liquid 4 by these guide rolls 3. The cleaning tank 2 is also provided with an overflow port 5 and a drain port 6 disposed below the overflow port 5.
The contamination level detection sensor 7, which is the gist of this embodiment, is shown in FIG.
is installed. As shown in FIG. 2, this sensor 7 is connected to the drain port 6 in an upright state, and is also connected to a drain tube 8 formed of a transparent material and an opening at the upper end of this drain tube 8. A drainage pipe 9 is integrally connected to the drain pipe 9 by a mounting screw 10, and a reference liquid conduit pipe 11 made of a transparent material is arranged adjacent to the transparent drain pipe 8. A liquid supply pipe 12 is provided at the lower end of the conduit pipe 11, and an overflow pipe 13 is provided at its upper end.
is connected. Reference numerals 14 and 15 denote a light emitting body and a light receiving body which are arranged opposite to each other on the left and right sides of the transparent drain pipe 8 and the standard liquid conduit 11, with the light emitting body 14 being a lighting lamp or the like; For example, a light receiving element, a solar cell, a variable resistance element, etc. can be used as the element 15, which can produce an electrical output by receiving light. 16 is a control circuit, and this control circuit 16 can open and close the electromagnetic valve 17 for supplying fresh water into the cleaning tank 2 based on the input to the light emitter 14 and the signal from the photoreceptor 15. I'm starting to be able to do it. 18 is a drain valve.

The structure of this embodiment has been described above. Next, its operation will be described. After pouring the washing water 4 into the washing tank 2, the fabric 1 is continuously transferred while being immersed in this washing water 4. The fabric 1 is washed, but as the washing of the fabric progresses, the washing water in the water tank 2 gradually becomes contaminated, but this contaminated washing water is filled into the drain pipe 8 from the drain port 6. has been done. Also, at this time, the light emitter 14 is connected to the control circuit 16
Drain tube 8 that emits light when input from and this light becomes transparent
Since the light passes through the reference liquid conduit tube 11 and is projected onto the photoreceptor 15, the degree of contamination of the cleaning water in the drainage tube 8 can be detected based on the amount of light received by the photoreceptor 15. For example, when the color of water contamination is yellow, it is difficult to detect the degree of contamination using light.
In this way, when the color of contamination (degree of contamination) of the washing water caused by the fabric to be cleaned is considered difficult to detect with light, a filter liquid with a color that will improve the judgment of the degree of contamination is selected. By filling the standard solution into the conduit 11, the concentration of contamination in the contaminated water in the drain pipe 8 is captured in a contaminant color that is easy to detect electrically, and as a result, the degree of contamination in the cleaning water in the cleaning tank 2 is determined to be suitable. It can be detected. In this way, the degree of contamination of the cleaning water is detected, and if the degree of turbidity of the cleaning water is high, the amount of light received by the photoreceptor 15 will decrease. Then, the control circuit 16 detects that the amount of light received by the photoreceptor 15 is weak, and the electromagnetic valve 17 is opened in response to this detection signal, and fresh water is supplied into the cleaning water tank 2. Due to this supply of fresh water, the water in the cleaning water tank 2 is gradually drained from the overflow port 5 and the drain port 6, and when the water in the water tank 2 becomes clear, the water in the drain tube 8 also becomes clear and translucent. Therefore, the amount of light received by the photoreceptor 15 increases, and due to this high level output from the photoreceptor 15, the control circuit 16 outputs a signal to close the electromagnetic valve 17, thereby interrupting the fresh water supply. Thereafter, in the same manner, if the wash water in the wash water tank 2 becomes cloudy, fresh water is supplied, and if the wash water becomes clear, the fresh water supply is interrupted, which is repeated.

Therefore, according to this embodiment, when the contaminated color density of the washed sewage in the washing tank is a color that is difficult to detect electrically, the color and density are set such that the color of the washed sewage can be effectively captured. By filling the set standard liquid into the standard liquid conduit 11, the measurement sensitivity is increased and the degree of contamination can be effectively and accurately detected.

[Summary of the invention]

As described above, the present invention detects the degree of contamination of the cleaning liquid in the cleaning liquid tank containing the cleaning liquid to be used to clean the fabric by using a sensor including a light emitter and a photoreceptor, and uses the contamination degree detection output from this sensor to detect the degree of contamination of the cleaning liquid in the cleaning liquid tank. In a cleaning fluid contamination degree detection sensor for a cleaning device, the cleaning fluid in the cleaning fluid tank can be automatically adjusted to a desired clear fluid by additionally supplying clear fluid into the cleaning fluid tank. A fabric cleaning device characterized in that a transparent reference liquid conduit through which a color collecting liquid can flow is installed between the light emitting body and the photoreceptor adjacent to the cleaning liquid flow path located therebetween. This is a cleaning fluid contamination level detection sensor.

〔Effect of the invention〕

Therefore, according to the present invention, when the contaminant color density of the washed sewage in the washing tank is a color that is difficult to detect electrically, the color and density are set so that the color of the washed sewage can be effectively captured. By filling the standard liquid conduit 11 with the standard liquid, the measurement sensitivity is increased and the degree of contamination can be effectively and accurately detected.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view showing an embodiment of the fabric cleaning apparatus according to the present invention, and FIG. 2 is a cross-sectional view of only the sensor thereof. 1...Fabric, 2...Washing tank, 3...Guide roll, 4
...Cleaning liquid, 5...Overflow port, 6...Drain port, 7
...Pollution level detection sensor, 8...Drain pipe, 9...Drain pipe,
DESCRIPTION OF SYMBOLS 10...Mounting screw, 11...Standard liquid conduit pipe, 12...Liquid supply pipe, 13...Overflow pipe, 14...Light emitter,
15... Photoreceptor, 16... Control circuit, 17... Solenoid valve, 18... Drain valve.

Claims (1)

[Claims] 1. The degree of contamination of the cleaning liquid in the cleaning liquid tank containing the cleaning liquid to be used to clean the fabric is detected by a sensor consisting of a light emitter and a photoreceptor, and the cleaning liquid is additionally supplied into the cleaning liquid tank based on the contamination degree detection output from this sensor. In the cleaning fluid contamination degree detection sensor of the cleaning device, the cleaning fluid in the cleaning fluid tank can be automatically adjusted to a desired clear solution, and the cleaning fluid flow sensor is located between the light emitter and the photoreceptor. A cleaning liquid contamination degree detection sensor for a fabric cleaning apparatus, characterized in that a transparent reference liquid conduit through which a color collecting liquid can flow is installed between the light emitter and the photoreceptor adjacent to the passage.