KR102352765B1 - Apparatus for measuring water quality - Google Patents

Abstract

The present invention relates to an apparatus for measuring water quality in a wastewater treatment facility or a water treatment facility in a sewage treatment plant. The apparatus further includes an enclosure separated into a plurality of rooms by a bulkhead for arranging components, wherein a water quality measurement tank is arranged in the first room, a second room is arranged in a lower part of the first room, a water supply pump of a water supply line and a valve of a drain line are arranged in the second room, a third room is arranged on a side of the first room, a distribution board is placed in the third room, a fourth room is arranged in a lower part of the third room, and a high-pressure pump and a washing water storage tank for supplying washing water to a washing water nozzle are disposed in the fourth room. Therefore, the arrangement position of the water quality measurement tank is set relatively freely.

Description

Water quality measuring device {APPARATUS FOR MEASURING WATER QUALITY}

The present invention relates to a water quality measurement device for measuring water quality in a wastewater treatment facility or water purification facility of a sewage treatment plant, and more particularly, to a water quality measurement tank by supplying treated water from a treated water storage tank to a water quality measurement tank through a water supply line, and in the water quality measurement tank Water quality can be measured using a water quality sensor, and the water quality sensor rises above the water level in the water quality measurement tank or descends below the water level by the elevating device, and the water quality sensor is installed in the elevating device. It relates to a water quality measuring device for washing the water quality measuring sensor by spraying the washing water from the washing water nozzle to the water quality measuring sensor when the treated water rises above the water level by

Korean Patent No. 10-0945554 (February 25, 2010, registered) introduces "automatic water quality measuring equipment for bioreactors".

The automatic water quality measuring equipment of the bioreactor comprises: a water quality analysis unit installed adjacent to the bioreactor; an SV analysis unit installed adjacent to the water quality measurement tank; a sampling unit that collects a sample of treated water from the bioreactor and supplies it to the water quality analysis unit and the SV analysis unit; a washing unit for washing the water quality analysis unit and the SV analysis unit and discharging the discharged water to the bioreactor; It consists of an operation control unit that controls the operation of the entire equipment.

However, in the automatic water quality measurement equipment of the bioreactor, the water quality analysis is completed, the treated water is discharged from the water quality measurement tank, the water quality measurement tank is washed with washing water, and then the washing water is sprayed from the washing water nozzle to the water quality measurement sensor to wash the water quality measurement sensor. Therefore, it was not possible to clean the water quality sensor during water quality analysis.

Therefore, an object of the present invention is to supply the treated water from the treated water storage tank to the water quality measurement tank through the water supply line, and measure the water quality using the water quality sensor in the water quality measurement tank, so that the arrangement position of the water quality measurement tank can be relatively freely set. When the water quality sensor rises above the surface of the treated water in the water quality measurement tank or descends below the surface of the treated water by the elevating device, and the water quality sensor rises above the surface of the treated water by the elevating device, An object of the present invention is to provide a water quality measuring device capable of cleaning the water quality measuring sensor at any time as necessary by spraying washing water from the washing water nozzle to the water quality measuring sensor to wash the water quality measuring sensor.

Another object of the present invention is to mount a water quality sensor in the elevating device, so that when the water quality measuring sensor descends into the foreign material filter network disposed in the treated water storage tank by the elevating device, the water quality measuring sensor detects the water quality of the treated water. is measured, and the water quality sensor rises to the top of the foreign material filter net by the elevating device, and when the probe part of the water quality sensor is placed at the same height as the washing water nozzle, the washing water from the washing water nozzle to the water quality measuring sensor By spraying and washing the water quality sensor, the water quality sensor directly measures the water quality of the treated water filled in the treated water storage tank, so the measurement is accurate, the equipment cost can be reduced, the failure is small, and the Accordingly, it is to provide a water quality measuring device that can wash the water quality measuring sensor at any time.

Another object of the present invention is to provide a water quality measuring device capable of arranging components such as a water pump in the housing, making the device compact as a whole, and minimizing the occupied space.

Another object of the present invention is that after the washing water and air or washing water are evenly distributed in the nozzle body of the washing water nozzle, it can be sprayed to the water quality sensor through a plurality of bellows hose nozzles, and washing water with the water quality sensor using the bellows hose nozzle To provide a water quality measuring device that can accurately aim the spray hole of the bellows hose nozzle with a water quality sensor.

An example of the water quality measuring device according to the present invention for achieving the above object is a washing water nozzle and a water quality measuring sensor are disposed inside the water quality measuring tank, the water quality measuring sensor is mounted on the elevating device, the water quality measuring tank is connected to the water supply line It is connected to the treated water storage tank through a drain line, the upper end of the overflow pipe is connected to the circumferential surface of the water quality measurement tank, and the lower end of the overflow pipe is connected to the drain line,

When the water quality sensor rises above the surface of the treated water filled in the water quality measurement tank by the elevating device or descends below the surface of the treated water, and the water quality sensor rises above the surface of the treated water by the elevating device, the washing water nozzle The water quality sensor is washed by spraying the washing water to the water quality sensor in the ,

The treated water from the treated water storage tank is supplied to the water quality measurement tank by the water supply pump of the water supply line, the water level of the treated water filled in the water quality measurement tank is determined by the overflow pipe, and when the water quality measurement is completed by the water quality sensor, the drain line is opened, and the treated water from the water quality measurement tank is discharged to the treated water storage tank through a drain line.

The water quality measuring device according to the present invention further includes a housing for arranging components such as a water quality measuring tank and a water pump,

The enclosure is separated into a plurality of rooms by a partition wall, a water quality measuring tank is disposed in the first room, a second room is disposed in the lower part of the first room, and a water supply pump of a water supply line and a valve of a drain line are disposed in the second room is disposed, a third room is disposed on the side of the first room, a distribution board is disposed in the third room, a fourth room is disposed in the lower part of the third room, and the washing water is supplied to the fourth room by the washing water nozzle It is characterized in that a high-pressure pump and a washing water storage tank are disposed for the purpose.

The water quality measuring device according to the present invention is characterized in that the washing water reservoir is filled with washing water, the washing water in the washing water reservoir is supplied to the washing water nozzle by a high-pressure pump, and the washing water is sprayed to the water quality measuring sensor at a constant pressure set in the washing water nozzle. do.

The washing water nozzle is composed of a hexahedral nozzle body and a plurality of bellows hose nozzles mounted on the front of the nozzle body,

The nozzle body has a straight first main passage and a second main passage arranged in parallel therein, a washing water supply port is mounted at the inlet of the first main passage, and an air supply port is connected to the inlet of the second main passage and a plurality of first branch pipes and a plurality of second branch pipes are branched from the first main passage, so that the first branch pipe and the second branch pipe are arranged in opposite directions with respect to the first main passage, and the second A plurality of third branch pipes and a plurality of fourth branch pipes are branched from the main passage, and the third and fourth branch pipes are disposed in opposite directions with respect to the second main passage, and between the second branch pipes A third branch pipe is disposed, a discharge hole is formed in each of the first to fourth branch pipes, the discharge hole of the second branch pipe and the discharge hole of the third branch pipe are arranged in a zigzag shape, and in each discharge hole It is characterized in that each bellows hose nozzle is mounted.

Alternatively, as for the washing water nozzle, the nozzle body is formed in an annular shape, the washing water supply port is mounted on the circumferential surface of the nozzle body, a plurality of discharge holes are arranged at regular intervals on the front surface of the nozzle body, and each discharge hole It is characterized in that the bellows hose nozzle is mounted.

In the elevating device, a cylinder is vertically mounted on the side wall of the water quality measurement tank, an upper detection sensor and a lower detection sensor are respectively disposed on the side of the cylinder, and a connecting member is connected to the upper end of the connecting rod of the cylinder at a right angle, and the connecting member The holder is mounted at a right angle toward the bottom at the tip of the holder, the water quality sensor is mounted on the holder, and the water quality sensor is long arranged at the bottom,

When the connecting rod is withdrawn from the cylinder, the connecting member connected to the upper end of the connecting rod rises to the top, and the water quality sensor mounted on the holder of the connecting member rises above the surface of the treated water, and the probe part of the water quality sensor is washed with water. When it is located at the position of the nozzle and the upper detection sensor does not detect the connecting rod, the drawing of the connecting rod is stopped,

When the connecting rod is drawn into the cylinder, the connecting member connected to the upper end of the connecting rod is lowered, and the water quality sensor mounted on the holder of the connecting member is lowered below the surface of the treated water, and the lower sensor is connected to the connecting rod. When it detects, the drawing of the connecting rod is characterized in that it is stopped.

Alternatively, the elevating device is equipped with a motor on the side wall of the water quality measurement tank, a ball screw is connected to the motor, the ball screw is erected up and down, and an upper sensor and a lower sensor are respectively installed on the side of the ball screw. The horizontal connection member is connected to the nut that is arranged and ascends and descends along the ball screw, the holder is mounted at a right angle toward the bottom at the tip of the horizontal connection member, the water quality sensor is mounted on the holder, and the water quality measurement sensor moves to the bottom placed long,

When the motor rotates forward, as the nut rises upward along the ball screw, the connecting member connected to the nut rises. The probe part is positioned at the position of the washing water nozzle, and when the upper sensor detects the nut, the motor stops and the nut stops rising,

When the motor rotates in reverse, as the nut descends downward along the ball screw, the connecting member connected to the nut descends, and the water quality sensor mounted on the holder of the connecting member descends below the surface of the treated water, When the detection sensor detects the nut, the motor is stopped to stop the descent of the nut.

The water supply line is characterized in that the suction port is disposed below the water surface of the treated water storage tank, and a foreign material filter network is disposed around the suction port.

Another example of the water quality measuring device according to the present invention is that the housing is disposed on the bottom surface of the treated water storage tank, one end of the horizontal frame is connected to the housing, the middle part of the vertical frame is connected to the other end of the horizontal frame, and the The upper part of the foreign material filtering net is connected to the lower part, and the foreign material filtering net is submerged below the surface of the treated water in the treated water storage tank. As the elevating device is mounted on the frame and the water quality sensor is mounted on the elevating device, when the water quality measuring sensor is lowered into the foreign material filter network by the elevating device, the water quality measuring sensor measures the water quality of the treated water. When the water quality sensor rises to the top of the foreign material filter net by the elevating device and the probe part of the water quality sensor is placed at the same height as the washing water nozzle, the washing water is sprayed from the washing water nozzle to the water quality measuring sensor. , characterized in that the water quality measurement sensor is washed.

The enclosure is divided into a first-floor room and a second-floor room, and a high-pressure pump for supplying washing water to the washing water nozzle in the first-floor room and a washing water storage tank for storing washing water are disposed. , the washing water is sprayed to the water quality sensor at a constant pressure set by the washing water nozzle, and a distribution board is arranged in the second floor room.

The washing water nozzle is composed of a hexahedral nozzle body and a plurality of bellows hose nozzles mounted on the front of the nozzle body,

The nozzle body has a straight first main passage and a second main passage arranged in parallel therein, a washing water supply port is mounted at the inlet of the first main passage, and an air supply port is connected to the inlet of the second main passage and a plurality of first branch pipes and a plurality of second branch pipes are branched from the first main passage, so that the first branch pipe and the second branch pipe are arranged in opposite directions with respect to the first main passage, and the second A plurality of third branch pipes and a plurality of fourth branch pipes are branched from the main passage, and the third and fourth branch pipes are disposed in opposite directions with respect to the second main passage, and between the second branch pipes A third branch pipe is disposed, a discharge hole is formed in each of the first to fourth branch pipes, the discharge hole of the second branch pipe and the discharge hole of the third branch pipe are arranged in a zigzag shape, and in each discharge hole It is characterized in that each bellows hose nozzle is mounted.

Alternatively, as for the washing water nozzle, the nozzle body is formed in an annular shape, the washing water supply port is mounted on the circumferential surface of the nozzle body, a plurality of discharge holes are arranged at regular intervals on the front surface of the nozzle body, and each discharge hole It is characterized in that the bellows hose nozzle is mounted.

In the elevating device, the cylinder is mounted on a vertical frame in an inverted state, an upper detection sensor and a lower detection sensor are respectively disposed on the side of the cylinder, and the connecting member is connected at a right angle to the connecting rod of the cylinder, and at the tip of the connecting member The rod is mounted up and down long, and a water quality sensor is installed at the bottom of the rod,

When the connecting rod is withdrawn from the cylinder, the connecting member connected to the connecting rod descends downward, and the water quality sensor connected to the lower end of the connecting member's rod enters the foreign material filter network and descends below the surface of the treated water. When the lower sensor detects the connecting member, the drawing of the connecting rod is stopped,

When the connecting rod is drawn into the cylinder, the connecting member connected to the connecting rod rises upward, and the water quality sensor connected to the lower end of the rod of the connecting member rises above the surface of the treated water, and the probe part of the water quality sensor It is positioned at the position of the washing water nozzle, and when the upper detection sensor does not detect the connecting rod, the connecting rod is stopped.

Alternatively, the elevating device is equipped with a motor at the lower end of the vertical frame, a ball screw is connected to the motor, the ball screw is erected up and down, and an upper sensor and a lower sensor are respectively installed on the side of the ball screw. The horizontal connection member is connected to the nut that is arranged and ascends and descends along the ball screw, the holder is mounted at a right angle toward the bottom at the tip of the horizontal connection member, the water quality sensor is mounted on the holder, and the water quality measurement sensor moves to the bottom placed long,

When the motor rotates forward, as the nut rises upward along the ball screw, the horizontal connection member connected to the nut rises, and the water quality sensor mounted on the holder of the horizontal connection member rises above the surface of the treated water to measure water quality The probe part of the sensor is positioned at the position of the washing water nozzle, and when the upper sensor detects the nut, the motor stops and the nut stops rising,

When the motor rotates in reverse, as the nut descends downward along the ball screw, the horizontal connection member connected to the nut descends, and the water quality sensor mounted on the holder of the horizontal connection member descends below the surface of the treated water. , characterized in that when the lower sensor detects the nut, the motor is stopped to stop the lowering of the nut.

Thereby, the water quality measuring device according to the present invention can set the arrangement position of the water quality measuring tank relatively freely, can wash the water quality measuring sensor at any time as necessary, accurate measurement, and reduce equipment cost, There are fewer breakdowns, and components such as a water pump can be placed in the enclosure, making the device overall compact, minimizing the space occupied, and evenly distributing washing water and air or washing water from the nozzle body of the washing water nozzle After that, it can be sprayed to the water quality sensor through a plurality of bellows hose nozzles, and since the washing water is sprayed with the water quality sensor using the bellows hose nozzle, the spray hole of the bellows hose nozzle can be accurately aimed with the water quality sensor. , there is an effect that can prevent an error in the water quality measurement sensor due to foreign substances by the foreign substance filter network.

1 is a block diagram showing a water quality measuring device according to a first embodiment of the present invention;
Figure 2 is a schematic view showing an example mounted on the housing of the water quality measuring device according to the first embodiment of the present invention
3 is a perspective view showing a first embodiment of the washing water nozzle;
4 is a cross-sectional view showing the nozzle body of the washing water nozzle shown in FIG.
5 is a perspective view showing a second embodiment of the washing water nozzle;
6 and 7 are side views showing a first embodiment of the elevating device
8 and 9 are side views showing a second embodiment of the elevating device
10 and 11 are block diagrams showing a water quality measuring device according to a second embodiment of the present invention;
12 is a perspective view showing a first embodiment of the washing water nozzle;
13 is a cross-sectional view showing the nozzle body of the washing water nozzle shown in FIG. 12
14 is a perspective view showing a second embodiment of the washing water nozzle;
15 and 16 are side views showing another example of the elevating device

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the description below, treated water refers to sewage and wastewater that is in the process of being treated after it has flowed into a sewage treatment plant.

Referring to FIG. 1 , in the water quality measuring device according to the first embodiment of the present invention, a washing water nozzle 120 and a water quality measuring sensor 130 are disposed inside the water quality measuring tank 110 , and the water quality measuring sensor 130 . is mounted on the elevating device 140 , and the water quality measuring tank 110 is connected to the treated water storage tank 170 through the water supply line 150 and the drain line 160 , and the circumferential surface of the water quality measuring tank 110 . The upper end of the overflow pipe 165 is connected to the , and the lower end of the overflow pipe 165 is connected to the drain line 160 .

Thereby, the water quality measurement sensor 130 rises above the water surface sf of the treated water filled in the water quality measurement tank 110 by the elevating device 140 or descends below the water surface sf of the treated water, When the water quality measuring sensor 130 rises above the water surface sf of the treated water by the elevating device 140, the washing water is sprayed from the washing water nozzle 120 to the water quality measuring sensor 130 to the water quality measuring sensor 130. is washed, and when the water quality measuring sensor 130 descends below the water surface sf of the treated water by the elevating device 140 , the water quality measuring sensor 130 controls the quality of the treated water in the water quality measuring tank 110 . will measure

Then, the treated water of the treated water storage tank 170 is supplied to the water quality measurement tank 110 by the water supply pump 152 of the water supply line 150, and the water quality measurement tank 110 is not filled by the overflow pipe 165. The water level of the treated water is determined, and when the water quality measurement by the water quality measurement sensor 130 is completed, the valve 162 of the drain line 160 is opened, and the treated water from the water quality measurement tank 110 is ) through the treated water storage tank 170 .

Referring to FIG. 2 , the water quality measuring apparatus according to the first embodiment of the present invention further includes a housing 180 for arranging the water quality measuring tank 110 , the water supply pump 152 , and the like.

The enclosure 180 is divided into a plurality of rooms by a partition wall, the water quality measuring tank 110 is disposed in the first room 181 , and the second room 182 is disposed under the first room 181 . The water pump 152 of the water supply line 150 and the valve 162 of the drain line 160 are arranged in the second room 182, and the third room 183 is located on the side of the first room 181. is disposed, the distribution board 185 is disposed in the third room 183 , the fourth room 184 is disposed under the third room 183 , and the washing water nozzle 120 is disposed in the fourth room 184 . A high-pressure pump 192 for supplying washing water to the furnace and a washing water storage tank 193 are disposed.

In addition, an air compressor (not shown) for selectively supplying compressed air to the washing water nozzle 120 may be mounted in the fourth room 184 .

Referring back to FIGS. 1 and 2 , in the water quality measuring device according to the first embodiment of the present invention, the washing water storage tank 193 is filled with washing water, and the washing water in the washing water storage tank 193 is washed water by the high-pressure pump 192 . It is supplied to the nozzle 120 , and the washing water is sprayed to the water quality measuring sensor 130 at a constant pressure set by the washing water nozzle 120 .

3 and 4 , the washing water nozzle 120 includes a hexagonal nozzle body 121 and a plurality of bellows hose nozzles 129 mounted on the front of the nozzle body 121 .

The nozzle body 121 has a straight first main passage 122 and a second main passage 123 arranged in parallel therein, and a washing water supply port 124 is provided at the inlet of the first main passage 122 . It is mounted, and the air supply port 125 is connected to the inlet of the second main passage 123 , and in the first main passage 122 , a plurality of first branch pipes 126a and a plurality of second branch pipes 126b are connected. This branching, the first branch pipe (126a) and the second branch pipe (126b) are arranged in opposite directions with respect to the first main passage (122), and a plurality of third branches in the second main passage (123) The engine (127c) and the plurality of fourth branch pipes (127d) are branched, and the third branch pipe (127c) and the fourth branch pipe (127d) are arranged in opposite directions with respect to the second main passage (123). , a third branch pipe 127c is disposed between the second branch pipe 126b, and discharge holes 128a, 128b, 128c, 128d are provided in the first to fourth branch pipes 126a, 126b, 127c, 127d. are formed, respectively, the discharge hole 128b of the second branch pipe 126b and the discharge hole 128c of the third branch pipe 127c are arranged in a zigzag form, and each discharge hole 128a, 128b, 128c, 128d ), each bellows hose nozzle 129 is mounted.

In addition, the bellows hose nozzle 129 is not mounted on all of the discharge holes 128a, 128b, 128c, 128d of the first to fourth branch pipes 126a, 126b, 127c, and 127d, but rather the bellows hose nozzle ( 129) can be selected to be installed in the discharge hole. And, the discharge hole to which the washing water hose nozzle 129 is not mounted is blocked.

The bellows hose nozzle 129 is already well known, and the injection hole is freely adjusted in the injection direction.

As a result, the washing water nozzle 120 allows the washing water from the bellows hose nozzle 129 mounted in the discharge hole 128a of the first branch pipe 126a and the discharge hole 128b of the second branch pipe 127b. The air is sprayed from the bellows hose nozzle 129 mounted on the discharge hole 128c of the third branch pipe 127c and the discharge hole 128d of the fourth branch pipe 127d.

Referring to FIG. 5 , as another alternative, the washing water nozzle 120 has a nozzle body 121 ′ formed in an annular shape, and a washing water supply port 122 ′ is mounted on the circumferential surface of the nozzle body 121 ′. , A plurality of discharge holes 123' are arranged at regular intervals on the front of the nozzle body 121', and a bellows hose nozzle 124' is mounted on each discharge hole 123'.

In addition, the washing water hose nozzle 124' may be mounted on all the discharge holes 123' of the nozzle body 121' or may be selectively mounted on several discharge holes. And, the discharge hole to which the washing water hose nozzle 124' is not mounted is blocked.

The water quality measuring sensor 130 is BOD (Biochemical Oxygen Demand, biochemical oxygen demand), MLDO (Mixed Liquor Dissolved Oxygen, dissolved oxygen concentration in a mixed solution), MLSS (Mixed Liquor Suspended Solid, mixed suspended solid), pH (hydrogen) It measures the commercial log value of the reciprocal of the ion concentration), SV30 (sludge volume 30, the ratio of the amount of sedimentation sludge to the sample volume when the sample is stagnated in a 1 liter measuring cylinder for 30 minutes), water temperature, etc. A detailed description will be omitted here.

6 and 7, in the first embodiment of the elevating device 140, a cylinder 141a is vertically mounted on the sidewall of the water quality measuring tank 110, and the upper part is located on the side of the cylinder 141a. The detection sensor 143a and the lower detection sensor 144a are respectively disposed, the connecting member 145a is connected at a right angle to the upper end of the connecting rod 142a of the cylinder 141a, and a holder ( 146a) is mounted at a right angle toward the bottom, the water quality measuring sensor 130 is mounted on the holder 146a, and the water quality measuring sensor 130 is long disposed downward.

As a result, as shown in FIG. 6 , when the connecting rod 142a is drawn out from the cylinder 141a, the connecting member 145a connected to the upper end of the connecting rod 142a rises upward, and the connecting member 145a ), the water quality sensor 130 mounted on the holder 146a rises above the water surface sf of the treated water so that the probe part of the water quality sensor 130 is located at the position of the washing water nozzle 120, and the upper When the detection sensor 143a does not detect the connecting rod 142a, the drawing of the connecting rod 142a is stopped.

And, as shown in FIG. 7, when the connecting rod 142a is drawn into the cylinder 141a, the connecting member 145a connected to the upper end of the connecting rod 142a descends downward, and the The water quality sensor 130 mounted on the holder 146a descends below the surface of the treated water, and when the lower detection sensor 144a detects the connecting rod 142a, the inlet of the connecting rod 142 is stopped. .

8 and 9, in the second embodiment of the elevating device 140, a motor 141b is mounted on the sidewall of the water quality measuring tank 110, and a ball screw 142b is mounted on the motor 141b. Connected, the ball screw 142b is vertically erected, and an upper detection sensor 144b and a lower detection sensor 145b are disposed on the side of the ball screw 142b, respectively, and ascending and descending along the ball screw 142b The horizontal connecting member 146b is connected to the nut 143b which becomes the horizontal connecting member 146b, the holder 147b is mounted at a right angle downward toward the lower end, and the water quality measuring sensor 130 is attached to the holder 147b. It is mounted, and the water quality measuring sensor 130 is long disposed downward.

Accordingly, as shown in FIG. 8, when the motor 141b rotates forward, the nut 143b rises upward along the ball screw 142b, and the horizontal connection member 146b connected to the nut 143b. rises, and the water quality sensor 130 mounted on the holder 147b of the horizontal connection member 146b rises above the water surface sf of the treated water, so that the probe part of the water quality sensor 130 is the washing water nozzle ( 120), and when the upper detection sensor 144b detects the nut 143b, the motor 141b is stopped to stop the raising of the nut 143b.

9, when the motor 141b rotates in reverse, the nut 143b descends downward along the ball screw 142b, and the horizontal connection member 146b connected to the nut 143b descends, When the water quality measurement sensor 130 mounted on the holder 147b of the horizontal connection member 146b descends below the water surface sf of the treated water, and the lower detection sensor 145b detects the nut 143b, the motor (141b) is stopped, the lowering of the nut (143b) is stopped.

Referring back to FIG. 1 , in the water supply line 150 , a suction port 151 is disposed below the treated water surface of the treated water storage tank 170 , and a foreign material filter network 153 is disposed around the suction port 151 , , it prevents the foreign substances from being sucked into the suction port 151 by the foreign substance filter network 153 .

The water quality measuring apparatus according to the first embodiment of the present invention as described above is a water tank type, and supplies the treated water from the treated water storage tank 170 to the water quality measurement tank 110 through the water supply line 150, and the water quality measurement tank In 110, the water quality can be measured using the water quality measuring sensor 130, so the arrangement position of the water quality measuring tank 130 can be relatively freely set, and the water quality measuring sensor 130 by the elevating device 140. rises above the water surface (sf) of the treated water in the water quality measurement tank 110 or descends below the water surface (sf) of the treated water, and the water quality sensor 130 moves to the surface of the treated water by the elevating device 140 (sf) When it rises upward, washing water is sprayed from the washing water nozzle 120 to the water quality measuring sensor 130 to wash the water quality measuring sensor 130, so that the water quality measuring sensor 130 can be washed at any time as needed. There is an advantage, and the water quality measuring tank 110, the water supply pump 152, the high pressure pump 192, etc. can be arranged in the housing 180, so that the device can be manufactured compactly as a whole, and the occupied space can be minimized. In addition, by supplying the washing water from the washing water storage tank 193 to the washing water nozzle 120 using the pneumatic pump 192, the washing water can be sprayed to the water quality measuring sensor 130 at a constant pressure set in the washing water nozzle 120, , After the washing water and air or washing water are evenly distributed in the nozzle body 121 of the washing water nozzle 120, it may be sprayed to the water quality measurement sensor 130 through a plurality of bellows hose nozzles 129, and the bellows hose nozzle ( 129), since the washing water is sprayed to the water quality measuring sensor 130, the injection hole of the bellows hose nozzle 129 can be accurately aimed with the water quality measuring sensor 130, and The foreign material filter net 153 is disposed, there is an effect that can prevent the foreign material from being sucked into the suction port of the water supply line.

10 and 11 , in the water quality measuring device according to the second embodiment of the present invention, the housing 220 is disposed on the bottom surface 211 of the treated water storage tank 210 , and the housing 220 is provided with a horizontal frame One end of the 232 is connected, the middle part of the vertical frame 234 is connected to the other end of the horizontal frame 232, and the upper end of the foreign material filtering net 236 is connected to the lower end of the vertical frame 234, the foreign material filtering net 236 is submerged below the surface of the treated water in the treated water storage tank 210 , and a washing water nozzle 240 is mounted at the lower end of the vertical frame 234 , so that the washing water nozzle 240 is an upper portion of the foreign material filtering net 236 . is disposed in, the elevating device 250 is mounted on the vertical frame 234, and the water quality measuring sensor 260 is mounted on the elevating device 250, so that the water quality measuring sensor 260 by the elevating device 250 ) descends into the foreign material filter network 236, the water quality measuring sensor 260 measures the water quality of the treated water, and the water quality measuring sensor 260 by the elevating device 250 moves the foreign material filter network ( 236), when the probe part of the water quality measuring sensor 260 is disposed at the same height as the washing water nozzle 240, the washing water is sprayed from the washing water nozzle 240 to the water quality measuring sensor 260. , the water quality measurement sensor 260 is washed.

The water quality measuring device according to the second embodiment of the present invention configured as described above is a cylinder type, and since the water quality measuring sensor 260 directly measures the water quality of the treated water filled in the treated water storage tank 210, the first aspect of the present invention is Since the water quality measurement tank, water supply line, drain line, and overflow pipe of the water quality measurement device according to the first embodiment are not required, it is possible to reduce the equipment cost and has the advantage of fewer failures.

In the water quality measuring device according to the second embodiment of the present invention, the water quality measuring sensor 260 is mounted on the elevating device 250, so that the water quality measuring sensor 260 by the elevating device 250 is connected to the foreign material filter network 236 ), when the probe part of the water quality measuring sensor 260 is disposed at the same height as the washing water nozzle 240, the washing water is sprayed from the washing water nozzle 240 to the water quality measuring sensor 260, By washing the water quality measuring sensor 260, there is an advantage that the water quality measuring sensor 260 can be washed at any time as needed.

The enclosure 220 is divided into a first-floor room 221 and a second-floor room 223, and a high-pressure pump (not shown) for supplying washing water to the first-floor room 221 with a washing water nozzle and a washing water storage tank for storing washing water ( not shown), the washing water of the washing water storage tank is supplied to the washing water nozzle 240 by a high-pressure pump, so that the washing water is sprayed to the water quality measuring sensor 260 at a constant pressure set by the washing water nozzle 240, 2 A distribution board (not shown) is disposed in the floor room 223 .

In addition, an air compressor (not shown) for selectively supplying compressed air to the washing water nozzle may be installed in the first floor room 221 .

12 and 13 , the washing water nozzle 240 includes a hexagonal nozzle body 241 and a plurality of bellows hose nozzles 249 mounted on the front of the nozzle body 241 .

The nozzle body 241 has a straight first main passage 242 and a second main passage 243 arranged in parallel therein, and a washing water supply port 244 is provided at the inlet of the first main passage 242. is mounted, the air supply port 245 is connected to the inlet of the second main passage 243, and a plurality of first branch pipes 246a and a plurality of second branch pipes 246b in the first main passage 242 This branching, the first branch pipe (246a) and the second branch pipe (246b) are arranged in opposite directions with respect to the first main passage (122), a plurality of third branches in the second main passage (243) The engine 247c and the plurality of fourth branch pipes 247d are branched, and the third branch pipe 247c and the fourth branch pipe 247d are disposed in opposite directions with respect to the second main passage 243 . , the third branch pipe 247c is disposed between the second branch pipe 246b, and the discharge holes 248a, 248b, 248c, 248d are provided in the first to fourth branch pipes 246a, 246b, 247c, 247d. respectively, the discharge hole 248b of the second branch pipe 246b and the discharge hole 248c of the third branch pipe 247c are arranged in a zigzag form, and the respective discharge holes 248a, 248b, 248c, 248d ) is equipped with a bellows hose nozzle 249, respectively.

In addition, the bellows hose nozzle 249 is not mounted on all of the discharge holes 248a, 248b, 248c, 248d of the first to fourth branch pipes 246a, 246b, 247c, and 247d, but rather the bellows hose nozzle ( 249) can be selected through which the discharge hole is mounted. And, the discharge hole to which the washing water hose nozzle 249 is not mounted is blocked.

The bellows hose nozzle 249 is already well known, and the injection hole is freely adjusted in the injection direction.

As a result, the washing water nozzle 240 generates the washing water from the bellows hose nozzle 249 mounted in the discharge hole 248a of the first branch pipe 246a and the discharge hole 248b of the second branch pipe 247b. The air is sprayed from the bellows hose nozzle 249 mounted on the discharge hole 248c of the third branch pipe 247c and the discharge hole 248d of the fourth branch pipe 247d.

Referring to FIG. 14 , as another alternative, the washing water nozzle 240 has a nozzle body 241 ′ formed in an annular shape, and a washing water supply port 242 ′ is mounted on the circumferential surface of the nozzle body 241 ′. , A plurality of discharge holes 243' are arranged at regular intervals on the front of the nozzle body 241', and a bellows hose nozzle 244' is mounted on each discharge hole 243'.

In addition, the washing water hose nozzle 244' may be mounted on all the discharge holes 233' of the nozzle body 241' or may be selectively mounted on several discharge holes. In addition, the discharge hole to which the washing water hose nozzle 244' is not mounted is blocked.

Referring back to FIGS. 10 and 11 , the elevating device 250 includes a cylinder 252 mounted in an inverted state on a vertical frame 234 , and an upper detection sensor 272 and a lower portion on the side of the cylinder 252 . Each of the detection sensors 274 is disposed, the connecting member 256 is connected to the connecting rod 254 of the cylinder 252 at a right angle, and the rod 258 is mounted vertically at the tip of the connecting member 256, and , a water quality sensor 260 is mounted at the lower end of the rod 256 .

As a result, as shown in FIG. 10 , when the connecting rod 254 is drawn out from the cylinder 252 to the lower side, the connecting member 256 connected to the connecting rod 254 descends to the lower side, and the connecting member 256 ), the water quality measuring sensor 260 connected to the lower end of the rod 258 is drawn into the foreign material filter network 236 and descends below the surface of the treated water, and when the lower detection sensor 274 detects the connection member 256 , the drawing of the connecting rod 254 is stopped.

And, as shown in FIG. 11 , when the connecting rod 254 is drawn into the cylinder 252 to the upper portion, the connecting member 256 connected to the connecting rod 245 rises upward, and the The water quality sensor 260 connected to the lower end of the rod 258 rises above the surface of the treated water, so that the probe part of the water quality sensor 260 is located at the position of the washing water nozzle 240, and the upper detection sensor 272 ) does not sense the connecting rod 254, the drawing of the connecting rod 254 is stopped.

15 and 16 , in another example of the elevating device 250 , a motor 251 ′ is mounted at the lower end of the vertical frame 234 , and a ball screw 252 ′ is mounted on the motor 251 ′. Connected, the ball screw 252' is vertically erected, and an upper detection sensor 253' and a lower detection sensor 254' are disposed on the side of the ball screw 252', respectively, and the ball screw 252' ), the horizontal connecting member 256' is connected to the nut 255' elevating along the horizontal connecting member 256, and the holder 257 is mounted at a right angle downward toward the front end of the horizontal connecting member 256, and the holder 257') The water quality measurement sensor 260 is mounted on the, and the water quality measurement sensor 260 is long disposed downward.

As a result, as shown in FIG. 15 , when the motor 251 ′ rotates forward, the nut 255 ′ rises upward along the ball screw 252 ′, and the horizontal connection connected to the nut 255 ′ The member 256' is raised, and the water quality measuring sensor 260 mounted on the holder 257' of the horizontal connecting member 256 rises above the surface of the treated water, so that the probe part of the water quality measuring sensor 260 is It is positioned at the position of the washing water nozzle 240 , and when the upper detection sensor 253 ′ senses the nut 252 ′, the motor 251 ′ is stopped to stop the raising of the nut 252 ′.

Referring to FIG. 16 , when the motor 251 ′ rotates in reverse, the nut 255 ′ descends downward along the ball screw 252 ′, and the horizontal connection member 256 ′ connected to the nut 255 ′). is descended, the water quality sensor 260 mounted on the holder 257' of the horizontal connection member 256' descends below the surface of the treated water, and the lower sensor 254' is the nut 252' ) is sensed, the motor 251' is stopped to stop the nut 252' from descending.

The water quality measuring sensor 260 is BOD (Biochemical Oxygen Demand, biochemical oxygen demand), MLDO (Mixed Liquor Dissolved Oxygen, dissolved oxygen concentration in a mixed solution), MLSS (Mixed Liquor Suspended Solid), pH (hydrogen) The commercial log value of the reciprocal of the ion concentration), the water temperature, etc. are measured, and since they are already known, a detailed description thereof will be omitted.

The water quality measuring device according to the second embodiment of the present invention as described above can arrange a high-pressure pump in the housing 220, so that the device can be manufactured compactly as a whole, the space occupied can be minimized, and the washing water storage tank By supplying the washing water to the washing water nozzle using a high-pressure pump, washing water can be sprayed to the water quality measuring sensor 260 at a constant pressure set by the washing water nozzle 240, and washing water and air from the nozzle body of the washing water nozzle 240 Alternatively, after the washing water is evenly distributed, it can be sprayed to the water quality sensor through a plurality of bellows hose nozzles. It has the effect of being able to aim.

110: water quality measurement tank 120: washing water nozzle
130: water quality sensor 140: elevating device
150: water supply line 160: drain line
165: overflow pipe 170: treated water storage tank

Claims (14)

The washing water nozzle 120 and the water quality measuring sensor 130 are disposed inside the water quality measuring tank 110, the water quality measuring sensor 130 is mounted on the elevating device 140, and the water quality measuring tank 110 is supplied with water. It is connected to the treated water storage tank 170 through the line 150 and the drain line 160 , and the upper end of the overflow pipe 165 is connected to the circumferential surface of the water quality measuring tank 110 , and the overflow pipe 165 . By connecting the lower end of the drain line 160,
The water quality measurement sensor 130 rises above the water surface (sf) of the treated water filled in the water quality measurement tank 110 by the elevating device 140 or descends below the water surface (sf) of the treated water, and the water quality measurement sensor ( When the 130) rises above the water surface sf of the treated water by the elevating device 140, the washing water is sprayed from the washing water nozzle 120 to the water quality measuring sensor 130 to wash the water quality measuring sensor 130. , when the water quality sensor 130 descends below the water surface sf of the treated water by the elevating device 140 , the water quality sensor 130 measures the quality of the treated water in the water quality measuring tank 110 , ,
Process in which the treated water of the treated water storage tank 170 is supplied to the water quality measurement tank 110 by the water supply pump 152 of the water supply line 150 and the water quality measurement tank 110 is filled by the overflow pipe 165 When the water level is determined and the water quality measurement is completed by the water quality sensor 130 , the valve 162 of the drain line 160 is opened, and the treated water from the water quality measurement tank 110 passes through the drain line 160 . discharged to the treated water storage tank 170 through
The washing water nozzle 120 is composed of a hexahedral nozzle body 121 and a plurality of bellows hose nozzles 129 mounted on the front of the nozzle body 121,
The nozzle body 121 has a straight first main passage 122 and a second main passage 123 arranged in parallel therein, and a washing water supply port 124 is provided at the inlet of the first main passage 122 . It is mounted, and the air supply port 125 is connected to the inlet of the second main passage 123 , and in the first main passage 122 , a plurality of first branch pipes 126a and a plurality of second branch pipes 126b are connected. This branching, the first branch pipe (126a) and the second branch pipe (126b) are arranged in opposite directions with respect to the first main passage (122), and a plurality of third branches in the second main passage (123) The engine (127c) and the plurality of fourth branch pipes (127d) are branched, and the third branch pipe (127c) and the fourth branch pipe (127d) are arranged in opposite directions with respect to the second main passage (123). , a third branch pipe (127c) is disposed between the second branch pipe (126b), and discharge holes (128a, 128b, 128c, 128d) are provided in the first to fourth branch pipes (126a, 126b, 127c, 127d). are formed, respectively, the discharge hole 128b of the second branch pipe 126b and the discharge hole 128c of the third branch pipe 127c are arranged in a zigzag form, and each discharge hole 128a, 128b, 128c, 128d ) Water quality measuring device, characterized in that each bellows hose nozzle 129 is mounted.
The method of claim 1,
Further comprising a housing 180 for arranging components, the housing 180 is separated into a plurality of rooms by a partition wall, the water quality measuring tank 110 is disposed in the first room 181, the first The second room 182 is disposed in the lower part of the room 181, and the feed water pump 152 of the water supply line 150 and the valve 162 of the drain line 160 are disposed in the second room 182, A third room 183 is disposed on the side of the first room 181 , a distribution board 185 is disposed in the third room 183 , and a fourth room 184 is disposed below the third room 183 . and a high-pressure pump 192 for supplying washing water to the washing water nozzle 120 to the fourth room 184 and a washing water storage tank 193 are disposed.
The method of claim 1,
The washing water storage tank 193 is filled with washing water, and the washing water in the washing water storage tank 193 is supplied to the washing water nozzle 120 by the high-pressure pump 192, and the washing water is supplied to the washing water nozzle 120 at a constant pressure set by the water quality sensor. (130) Water quality measuring device, characterized in that it is sprayed.
delete The method of claim 1,
The washing water nozzle 120 has a nozzle body 121 ′ formed in an annular shape, a washing water supply port 122 ′ is mounted on a circumferential surface of the nozzle body 121 ′, and a front surface of the nozzle body 121 ′. A plurality of discharge holes 123' are arranged at regular intervals, and a bellows hose nozzle 124' is mounted to each discharge hole 123'.
The method of claim 1,
The elevating device 140 has a cylinder 141a mounted vertically on the sidewall of the water quality measuring tank 110, and an upper detection sensor 143a and a lower detection sensor 144a are installed on the side of the cylinder 141a, respectively. is disposed, the connecting member (145a) is connected to the upper end of the connecting rod (142a) of the cylinder (141a) at a right angle, the holder (146a) is mounted at a right angle to the lower portion at the front end of the connecting member (145a), the holder (146a) ) is equipped with a water quality measurement sensor 130, and the water quality measurement sensor 130 is long disposed at the bottom,
When the connecting rod 142a is withdrawn from the cylinder 141a, the connecting member 145a connected to the upper end of the connecting rod 142a rises upward, and the water quality measurement mounted on the holder 146a of the connecting member 145a. The sensor 130 rises above the water surface sf of the treated water so that the probe part of the water quality measurement sensor 130 is located at the position of the washing water nozzle 120, and the upper detection sensor 143a is connected to the connecting rod 142a. If it is not detected, the withdrawal of the connecting rod (142a) is stopped,
When the connecting rod 142a is introduced into the cylinder 141a, the connecting member 145a connected to the upper end of the connecting rod 142a is lowered, and the water quality is measured in the holder 146a of the connecting member 145a. The sensor 130 descends below the surface of the treated water, and when the lower detection sensor 144a detects the connecting rod 142a, the water quality measuring device, characterized in that the drawing of the connecting rod 142 is stopped.
The washing water nozzle 120 and the water quality measuring sensor 130 are disposed inside the water quality measuring tank 110, the water quality measuring sensor 130 is mounted on the elevating device 140, and the water quality measuring tank 110 is supplied with water. It is connected to the treated water storage tank 170 through the line 150 and the drain line 160 , and the upper end of the overflow pipe 165 is connected to the circumferential surface of the water quality measuring tank 110 , and the overflow pipe 165 . By connecting the lower end of the drain line 160,
The water quality measurement sensor 130 rises above the water surface (sf) of the treated water filled in the water quality measurement tank 110 by the elevating device 140 or descends below the water surface (sf) of the treated water, and the water quality measurement sensor ( When the 130) rises above the water surface sf of the treated water by the elevating device 140, the washing water is sprayed from the washing water nozzle 120 to the water quality measuring sensor 130 to wash the water quality measuring sensor 130. , when the water quality sensor 130 descends below the water surface sf of the treated water by the elevating device 140 , the water quality sensor 130 measures the quality of the treated water in the water quality measuring tank 110 , ,
Process in which the treated water of the treated water storage tank 170 is supplied to the water quality measurement tank 110 by the water supply pump 152 of the water supply line 150 and the water quality measurement tank 110 is filled by the overflow pipe 165 When the water level is determined and the water quality measurement is completed by the water quality sensor 130 , the valve 162 of the drain line 160 is opened, and the treated water from the water quality measurement tank 110 passes through the drain line 160 . discharged to the treated water storage tank 170 through
The washing water nozzle 120 is composed of a hexahedral nozzle body 121 and a plurality of bellows hose nozzles 129 mounted on the front of the nozzle body 121,
The elevating device 140 is equipped with a motor 141b on the side wall of the water quality measuring tank 110, and the ball screw 142b is connected to the motor 141b, so that the ball screw 142b is elongated up and down. , the upper detection sensor 144b and the lower detection sensor 145b are respectively disposed on the side of the ball screw 142b, and the horizontal connection member 146b is connected to the nut 143b elevating along the ball screw 142b. and the holder 147b is mounted at a right angle toward the bottom at the tip of the horizontal connection member 146b, and the water quality measurement sensor 130 is mounted on the holder 147b, and the water quality measurement sensor 130 is arranged long downwards. become,
When the motor 141b rotates forward, the nut 143b rises upward along the ball screw 142b, and the horizontal connecting member 146b connected to the nut 143b rises, and the horizontal connecting member 146b. The water quality sensor 130 mounted on the holder 147b of the water rises above the water surface sf of the treated water so that the probe part of the water quality sensor 130 is located at the position of the washing water nozzle 120, and the upper detection When the sensor 144b detects the nut 143b, the motor 141b is stopped to stop the raising of the nut 143b,
When the motor 141b rotates in reverse, the nut 143b descends downward along the ball screw 142b, and the horizontal connection member 146b connected to the nut 143b descends, and the The water quality sensor 130 mounted on the holder 147b descends below the water surface sf of the treated water, and when the lower detection sensor 145b detects the nut 143b, the motor 141b is stopped and the nut (143b) Water quality measuring device, characterized in that the descent is stopped.
The method of claim 1,
The water supply line 150 is a water quality measuring device, characterized in that the inlet 151 is disposed below the surface of the treated water of the treated water storage tank 170, and a foreign material filter network 153 is disposed around the inlet 151 .
A housing 220 is disposed on the bottom surface 211 of the treated water storage tank 210 , one end of the horizontal frame 232 is connected to the housing 220 , and a vertical frame 234 at the other end of the horizontal frame 232 . is connected, the upper end of the foreign material filtering net 236 is connected to the lower end of the vertical frame 234, so that the foreign material filtering net 236 is submerged below the treated water surface of the treated water storage tank 210, the vertical frame The washing water nozzle 240 is mounted at the lower end of the 234, the washing water nozzle 240 is disposed on the upper portion of the foreign material filtering net 236, the elevating device 250 is mounted on the vertical frame 234, and elevating and lowering When the water quality measuring sensor 260 is mounted in the device 250, the water quality measuring sensor 260 is lowered into the inside of the foreign material filter network 236 by the elevating device 250, the water quality measuring sensor 260 is The water quality of the treated water is measured, and the water quality measuring sensor 260 rises to the upper part of the foreign material filter network 236 by the elevating device 250 , so that the probe part of the water quality measuring sensor 260 is the washing water nozzle When disposed at the same height as (240), the water quality measuring device, characterized in that the washing water is sprayed from the washing water nozzle (240) to the water quality measuring sensor (260) to wash the water quality measuring sensor (260).
10. The method of claim 9,
The housing 220 is divided into a first-floor room 221 and a second-floor room 223, and a high-pressure pump for supplying washing water to the washing water nozzle in the first-floor room 221 and a washing water storage tank for storing washing water are disposed, the washing water storage tank of the washing water is supplied to the washing water nozzle 240 by the high-pressure pump, the washing water is sprayed to the water quality measuring sensor 260 at a constant pressure set by the washing water nozzle 240, and the distribution board is arranged in the second floor room 223 Characterized water quality measuring device.
10. The method of claim 9,
The washing water nozzle 240 is composed of a hexahedral nozzle body 241 and a plurality of bellows hose nozzles 249 mounted on the front of the nozzle body 241,
The nozzle body 241 has a straight first main passage 242 and a second main passage 243 arranged in parallel therein, and a washing water supply port 244 is provided at the inlet of the first main passage 242. is mounted, the air supply port 245 is connected to the inlet of the second main passage 243, and a plurality of first branch pipes 246a and a plurality of second branch pipes 246b in the first main passage 242 This branching, the first branch pipe (246a) and the second branch pipe (246b) are arranged in opposite directions with respect to the first main passage (122), a plurality of third branches in the second main passage (243) The engine 247c and the plurality of fourth branch pipes 247d are branched, and the third branch pipe 247c and the fourth branch pipe 247d are disposed in opposite directions with respect to the second main passage 243 . , the third branch pipe 247c is disposed between the second branch pipe 246b, and the discharge holes 248a, 248b, 248c, 248d are provided in the first to fourth branch pipes 246a, 246b, 247c, 247d. respectively, the discharge hole 248b of the second branch pipe 246b and the discharge hole 248c of the third branch pipe 247c are arranged in a zigzag form, and the respective discharge holes 248a, 248b, 248c, 248d ) Water quality measuring device, characterized in that each bellows hose nozzle 249 is mounted.
10. The method of claim 9,
The washing water nozzle 240 has a nozzle body 241 ′ formed in an annular shape, a washing water supply port 242 ′ is mounted on a circumferential surface of the nozzle body 241 ′, and is located on the front of the nozzle body 241 ′. A plurality of discharge holes 243' are arranged at regular intervals, and a bellows hose nozzle 244' is mounted to each discharge hole 243'.
10. The method of claim 9,
The elevating device 250 has a cylinder 252 mounted on the vertical frame 234 in an inverted state, and an upper detection sensor 272 and a lower detection sensor 274 are disposed on the side of the cylinder 252, respectively, The connecting member 256 is connected to the connecting rod 254 of the cylinder 252 at a right angle, the rod 258 is vertically mounted on the tip of the connecting member 256, and the water quality is measured at the lower end of the rod 256. A sensor 260 is mounted,
When the connecting rod 254 is drawn out from the cylinder 252 to the lower side, the connecting member 256 connected to the connecting rod 254 is lowered downward, and the water quality connected to the lower end of the rod 258 of the connecting member 256 is measured. The sensor 260 is drawn into the foreign material filter network 236 and descends below the surface of the treated water, and when the lower detection sensor 274 detects the connecting member 256, the drawing of the connecting rod 254 is stopped and ,
When the connecting rod 254 is drawn into the cylinder 252, the connecting member 256 connected to the connecting rod 245 rises upward, and the water quality connected to the lower end of the rod 258 of the connecting member 256 is measured. The sensor 260 rises above the surface of the treated water, so that the probe part of the water quality measurement sensor 260 is located at the position of the washing water nozzle 240 , and the upper detection sensor 272 detects the connecting rod 254 . If not, the water quality measuring device, characterized in that the inlet of the connecting rod 254 is stopped.
10. The method of claim 9,
The elevating device 250 has a motor 251 ′ mounted on the lower end of the vertical frame 234 , and a ball screw 252 ′ is connected to the motor 251 ′, so that the ball screw 252 ′ moves up and down. Elongated, the upper detection sensor 253' and the lower detection sensor 254' are disposed on the side of the ball screw 252', respectively, and the nut 255' that is raised and lowered along the ball screw 252'. The horizontal connection member 256' is connected, the holder 257 is mounted at a right angle downward toward the front end of the horizontal connection member 256, and the water quality measurement sensor 260 is mounted on the holder 257'. The measurement sensor 260 is arranged long downwards,
When the motor 251 ′ rotates forward, the nut 255 ′ rises upward along the ball screw 252 ′, and the horizontal connection member 256 ′ connected to the nut 255 ′ rises, and horizontally The water quality measuring sensor 260 mounted on the holder 257 ' of the connecting member 256 rises above the water surface of the treated water, and the probe part of the water quality measuring sensor 260 is positioned at the position of the washing water nozzle 240. , when the upper detection sensor 253' detects the nut 252', the motor 251' is stopped and the raising of the nut 252' is stopped,
When the motor 251 ′ rotates in reverse, the nut 255 ′ descends downward along the ball screw 252 ′, and the horizontal connection member 256 ′ connected to the nut 255 ′ descends, and horizontally When the water quality measurement sensor 260 mounted on the holder 257' of the connection member 256' descends below the surface of the treated water, and the lower sensor 254' detects the nut 252', the motor (251') is stopped, water quality measuring device, characterized in that the lowering of the nut (252') is stopped.

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