JP5016864B2 - Water quality inspection device for sewage tanks - Google Patents

Description

  The present invention is for a sewage tank that inspects the quality of the effluent from an office or a general household in a sewage tank that is provided in the middle of connecting the wastewater from the office or the mixed wastewater of the office and household wastewater to the mains. It relates to water quality inspection equipment.

  Conventionally, there is no way to inspect drainage from business establishments or general households, and it has been generally practiced to sample the sewage in the main and inspect the quality of the collected drainage.

  However, there is a problem that the main drainage from many businesses or households flows, and even if the water quality is inspected, it is difficult and troublesome to identify the source of the water quality deterioration. .

  In addition, since water sampling is performed manually, there is a problem that labor and labor costs are required.

  Therefore, if it is possible to conduct a water quality inspection of wastewater in the sewage basin where the wastewater from each business office or each general household enters, it is convenient because there is no need to specify the discharge source. The device was not successfully put into practical use.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a water quality inspection apparatus for sewage water tanks that can perform water quality inspections in sewage water tanks, can maintain maintenance easily, and can acquire stable data over a long period of time. And

In order to achieve the above object, the invention according to claim 1 of the present invention is a water quality inspection device that is installed in a sewage basin and inspects the quality of the wastewater flowing into the sewage basin,
A mounting portion that is attached in a stretched state by an elastic force within the pipe wall surface of the inlet pipe connected to the upstream side of the sewage tank,
A main body that is fitted in an invert in the cage to define a measurement tank;
A sensor that is fixed to the main body and measures the quality of the wastewater in the measurement tank;
It is characterized by providing.

  The invention described in claim 2 is characterized in that the mounting portion described in claim 1 is formed of an elastic band having an arcuate cross-sectional shape.

  The invention described in claim 3 is characterized in that a handle extending downstream is provided at each end of the elastic band according to claim 2.

  The invention according to claim 4 is characterized in that the attachment portion according to any one of claims 1 to 3 and the main body are connected to each other so as to be bent.

  According to a fifth aspect of the present invention, in the main body according to any one of the first to fourth aspects, the inflow of drainage from the upstream side to the measurement tank is allowed and the outflow of drainage from the measurement tank is prohibited. A directional valve is provided.

  According to a sixth aspect of the present invention, the one-way valve according to the fifth aspect includes a fixed plate that is inclined upward toward the upstream side and has an opening formed therein, and a fixed plate that is provided downstream of the fixed plate. And a flexible movable plate having one end fixed to the upper end and the other end being capable of opening and closing the opening.

  The invention according to claim 7 is characterized in that a drifting object prevention plate having a large number of holes is arranged upstream of the one-way valve according to claim 5 or 6.

Invention of claim 8, wherein said main body according to any one of claims 1 to 7, the next possible Rukoto attach the attachment having a shape that matches the inverting of the inner surface shape of the square And

  According to a ninth aspect of the present invention, there is provided a data logger which is connected to the sensor according to any one of the first to eighth aspects through a cable and records data from the sensor, and is suspended from a lid of a sewage tub. It is characterized by being able to.

  According to a tenth aspect of the present invention, the data logger according to the ninth aspect is suspended from a lid by way of a hanging bracket, and the hanging bracket includes a data logger mounting portion for mounting the data logger, and a lid. The data logger mounting portion can be penetrated in one direction with respect to the elongated through hole formed in the lid and cannot penetrate in another direction. The lid attaching part is characterized in that it cannot penetrate the through hole.

  The invention described in claim 11 is the apparatus according to any one of claims 1 to 10, further comprising a water sampling device that pumps up the waste water from the measuring tank and samples the water, and the water sampling device includes a sensor. It operates when the measurement data obtained from the above satisfy a predetermined condition.

  According to the present invention, the attachment portion is attached by elastic force in the wall surface of the water intake pipe, and the main body is fitted in the invert in the basin, so that the apparatus is securely attached to the bottom surface of the sewage basin. In addition, since the main body defines the measurement tank, even if the waste water flowing into the sewage tank is intermittent, measurement can be performed stably over a long period of time. In this way, water quality can be inspected in a sewage basin with simple maintenance.

  According to the second aspect of the present invention, by using the elastic band, the attachment portion can be attached in a stretched state to the inner surface of the pipe wall surface of the water inlet pipe without obstructing the inflow of drainage from the water inlet pipe.

  According to the third aspect of the present invention, the operation of attaching and detaching the apparatus can be easily performed by operating the distance between the handles to be variable. It can also be operated by directly holding the handle from the outside of the sewage basin, or when the sewage basin is deep, the handle can be operated using a jig to attach and detach the device.

  According to the fourth aspect of the present invention, when the device is attached and detached by bending the attachment portion and the main body via the hinge, the device can be smoothly taken in and out from the upper opening of the sewage tank.

  According to the fifth aspect of the present invention, the one-way valve allows the inflow to the measurement tank when new drainage is present, and restricts the outflow from the measurement tank, thereby constantly draining the measurement tank. Can be stored.

  According to the sixth aspect of the present invention, the opening can be closed by always covering the stationary plate with the movable plate by the dead weight of the movable plate, and only when there is drainage from the upstream side, the movable plate is driven by the pressure. The other end side of can be separated from the fixed plate to open the opening. A one-way valve can be configured with a simple configuration.

  According to the seventh aspect of the present invention, the one-way valve can be prevented from being clogged with drifting objects and falling objects by the drifting object prevention plate.

  According to the eighth aspect of the present invention, when the outer surface shape of the main body does not match the inner surface shape of the invert, the attachment can be attached to the main body to match the inner surface shape of the invert. Thus, the main body can be stably installed in the invert.

  According to invention of Claim 9, a data logger can be stably arrange | positioned, without being always exposed to waste_water | drain in a sewage tank.

  According to the tenth aspect of the present invention, the data logger mounting portion is formed after the direction of the data logger mounting portion is aligned with the through hole of the jar lid in a state where the lid is opened from the sewage tub, and then the through hole is passed through the through hole. When the data logger is attached to the lid and the lid is closed, the lid can be suspended from the lid because the lid mounting portion cannot penetrate the through hole. When opening the lid, when the direction of the data logger mounting portion of the hanging metal fitting is adjusted so as not to penetrate the through hole and the lid mounting portion is lifted, the lid can be opened.

  According to the eleventh aspect of the present invention, when the measurement data obtained from the sensor satisfies a predetermined condition, for example, when the measurement data shows an abnormal value, the water drainage at that time is pumped by the water sampling device. By doing so, the collected sample can be used for investigation at a later date.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are general views of a sewage tank water quality inspection apparatus 10 according to the present invention. In the figure, a sewage sewage water quality inspection apparatus 10 is roughly provided with a mounting portion 12, a main body 14, a sensor 16, and a data logger 18 (see FIG. 4).

  The mounting portion 12 includes an elastic band 20 having a circular cross section, and a ring-shaped handle 24 formed at the tip of a rod 22 extending from both ends of the elastic band 20 toward the downstream side. Yes. The ring-shaped handle 24 is arranged so that its ring surface faces up and down.

  The diameter of the elastic band 20 is set to be slightly larger than the diameter of the water inlet pipe connected to the upstream side of the sewage tank in the natural state of the elastic band 20.

  The main body 14 is connected to the downstream side of the attachment portion 12 via a hinge 28. The mounting portion 12 and the main body 14 are swingable so that both are bent.

  The main body 14 includes a semi-cylindrical outer case 30 suitable for being fitted into an invert that is a concave groove formed in the bottom of the sewage basin, and a drift provided at the most upstream inlet of the outer case 30. The one-way valve 34 and the one-way valve 34 provided inside the outer case 30 on the downstream side in alignment with the drifting-material prevention plate 32, and more than the one-way valve 34 and the one-way valve 34. A measuring tank 36 is defined by the outer case 30 on the downstream side.

  The upper part of the drifting object prevention plate 32 is inclined to the downstream side, and a large number of holes 32a are formed. The drifting material prevention plate 32 is used to block the drifting material and the falling material mixed in the waste water so that they do not interfere with the operation of the one-way valve 34.

  The one-way valve 34 is for permitting the inflow of drainage from the upstream side to the measurement tank 36 and prohibiting the drainage of the drainage from the measurement tank 36, and the upper side is inclined toward the upstream side. A fixed plate 38 fixed to the outer case 30, and a flexible movable plate 40 having one end fixed to the upper end of the fixed plate 38 on the downstream side of the fixed plate 38. The fixed plate 38 has a plurality of openings 38a formed in the lower part thereof. The flexible movable plate 40 can be composed of a sheet made of an elastic material such as rubber, and the lower end thereof can be moved to open and close the opening 38a. Although the movable plate 40 is urged by its own weight in a direction to close the opening 38a of the fixed plate 38, the opening 38a can be opened away from the opening 38a by the fluid pressure of the waste water on the upstream side.

  Thus, the waste water is always stored in the measuring tank 36 by the one-way valve 34.

  The sensor 16 is fixed to a mounting rod 42 that is spanned on both sides of the outer case 30, and a detection unit 16 a at the tip of the sensor 16 is inserted into the storage tank 36. Examples of the sensor 16 that measures water quality include a pH sensor, a turbidity sensor, and an electrical conductivity sensor. In addition, a temperature sensor 16b can be provided for temperature compensation.

  The sensor 16 is connected to a data logger 18 with a built-in data card via a cable 44.

  In order to install the sewage sewage inspection apparatus configured as described above in the sewage slag, the slag lid 52 on the upper part of the sewage sill 50 shown in FIG. 3 is opened and inserted from the upper opening. At this time, since the attachment portion 12 and the main body 14 can be bent via the hinge 28, even if the opening is narrow, it can be easily inserted. At the bottom of the sewage basin 50, the mounting portion 12 is inserted into the water intake pipe 56 on the upstream side. When the elastic band body 20 is inserted in a reduced diameter state with the handle 24 and released after the insertion, the elastic band body 20 is stretched into the pipe wall surface of the water inlet pipe 56. Further, the main body 14 is fitted into an invert 58 formed at the bottom of the sewage basin 50. As a result, as shown in FIG. 4, the main body 14 and the attachment portion 12 are fixed at the bottom of the sewage basin 50.

  The bracket fixed to the data logger 18 connected to the sensor 16 fixed to the main body 14 by the cable 44 is provided with a eggplant ring 18a, and the eggplant ring 18a is detachably attached to the hanging metal fitting 46. . As shown in FIG. 5, the hanging metal fitting 46 includes a data logger attachment portion 46a to which the data logger 18 is attached, a lid attachment portion 46b, and a connecting rod 46c that connects the attachment portions 46a and 46b. The data logger attachment portion 46a and the connecting rod 46c can penetrate the elongated through hole 52a formed in the lid 52, whereas the lid attachment portion 46b cannot penetrate the through hole 52a. It is like that. The data logger attachment portion 46a can penetrate the elongated through hole 52a depending on the direction, but has a shape that cannot penetrate the through hole 52a when the direction is changed by rotating.

  The hanging metal fitting 46 inserts the data logger mounting portion 46a and the connecting rod 46c into the through hole 52a of the jar lid 52 from the outside with the jar lid 52 opened from the sewage jar 50, and the data logger attachment portion 46a after the insertion. The eggplant ring 18a of the data logger 18 is attached to the lid and the lid 52 is closed. Thus, since the lid cover attaching portion 46b cannot penetrate the through hole 52a, the data logger 18 can be suspended from the lid 52.

  In the sewage tank water quality inspection apparatus attached as described above, when the drainage from the water inlet pipe 56 flows into the sewage tank 50, fluids other than the drifting material and the falling material pass through the drifting material prevention plate 32, and the one-way valve. 34 passes through the measurement tank 36 and is stored in the measurement tank 36. Thus, the water quality of the wastewater is measured every predetermined time by the sensor 16 and the data is recorded in the data logger 18.

  When drainage flows intermittently or continuously from the inlet pipe 56 into the sewage tank 50, the one-way valve 34 opens due to a pressure difference, and new drainage flows into the measurement tank 36, and excess drainage from the measurement tank 36. Overflows and flows to the main through the discharge pipe 60.

  Even if the inflow of drainage from the inlet pipe 56 is intermittent, the drainage is stored in the measurement tank 36 until new drainage inflow from the inlet pipe 56 occurs, so the data from the sensor 16 is Measurement can be performed stably without interruption. Therefore, even if the sensor 16 is required to be always in the water, the measurement can be stably performed without causing a defect or failure of the sensor 16.

  Further, the data logger 18 is preferably waterproofed, but since it is suspended by the lid 52, the data logger 18 is not exposed to drainage at all times except when the drainage amount is increased, and the data logger 18 is stable. Can be recorded. The data stored in the data logger 18 is collected by exchanging data cards through a regular tour or transferred to a portable computer. Alternatively, it is also possible to wirelessly transmit data to the base station by a wireless transmission device arranged on the lid or the periphery thereof, in which case the solar battery can be used for power.

  In this way, frequent maintenance can be eliminated, and stable and automatic measurement can be performed over a long period of time while saving labor.

  In addition, when attaching or removing the sewage tank water quality inspection device to the sewage tank 50, when the sewage tank 50 is deep, the hand 24 cannot be directly reached, and in that case, as shown in FIG. Such a jig 70 may be used. The jig 70 includes an operation unit 70a that is operated remotely, an elongated rod 70b that internally includes a transmission member that transmits an operation force applied to the operation unit 70a, and a pair of tip portions 70d that are operated by the operation force transmitted by the transmission member. , 70d is provided with an operating part 70c that opens and closes. Each distal end portion 70d of the operating portion 70c can be inserted into the ring of the corresponding handle 24. It is also possible to perform the work using the jig 70 by inserting the distal end portion 70d of the operating portion 70c into the handle 24 and operating the operating portion 70a to change the relative distance between the pair of handles 24.

  When opening the lid 52, the lid cover 46b of the hanging metal fitting 46 is grasped and pulled upward. At this time, paying attention to the directionality of the data logger mounting portion 46a and the through hole 52a, if the hanging metal fitting 46 is appropriately rotated so that they are not aligned, the data logger mounting portion 46a is locked to the lid 52. Therefore, the lid 52 can be lifted and the lid 52 can be easily opened using the hanging metal fitting 46.

  When there are a plurality of types of inner diameters of the water intake pipes 56, the inner diameters of the inverts 58 differ accordingly. When the inner diameter of the invert 58 is larger than the outer diameter of the semi-cylindrical outer case 30 of the main body 14 and the outer surface shape of the main body 14 does not match the inner surface shape of the invert 58, it is shown in FIGS. A suitable number of such attachments 48 can be attached. The attachment 48 includes an attachment portion 48 a attached to the outer case 30 and a peripheral surface portion 48 b that matches the inner peripheral surface of the invert 58. Thus, the attachment 48 can match the inner surface shape of the invert 58, and the main body 14 can be stably installed in the invert 58.

  FIG. 9 is a diagram illustrating another embodiment of the present invention. In this embodiment, in addition to the sewage tank water quality inspection device shown in FIG. 1, a water sampling device 80 for pumping up the waste water in the measuring tank 36 is provided. The water sampling device 80 includes a pump 82, a water sampling container 84, and a tube 86 that connects the measurement tank 36 and the water sampling container 84 via the pump 82. It is supported by the lid 52. The tube 86 is supported by a fixture fixed to the mounting rod 42, and the tip of the tube 86 enters the measurement tank 36 and is always in the drainage of the measurement tank 36. A strainer 86 a is provided at the tip of the tube 86. The pump 82 is connected to a control unit 90 provided in the data logger 18 via a cable 88.

  The control unit 90 takes in a signal from the sensor 16 and determines whether or not the measurement data obtained from the sensor 16 is within a predetermined range. When the predetermined condition is satisfied, that is, the measurement data is within the predetermined range. At a certain time, an operation signal of the pump 82 is output for a predetermined time via the cable 88, and the pump 82 is driven for a time period in which sufficient drainage can be accumulated in the water sampling container 84.

  The pump 82 is provided with an operation button for driving the pump separately.

  According to this embodiment, the sensor 16 continuously measures the water quality. For example, when the water quality shows an abnormal value (for example, the pH value is 4 or less or 10 or more), the waste water at that time is used as a sampling container. It can be pumped to 84. Normally, even if there is drainage that shows an abnormal value temporarily, it is difficult to catch it, but according to this embodiment, it is possible to save the drainage when indicating an abnormal time. Accordingly, the water collection container 84 can be collected later and used for inspection and the like. After collecting the water sampling container 84, a new water sampling container 84 can be set in the water sampling apparatus 80. Further, at the time of recovery, the cleaning can be performed by operating the operation button to drive the pump 82 and causing the cleaning water to flow through the tube 86 and the pump 82.

1 is an overall perspective view of a sewage tank water quality inspection apparatus according to the present invention. It is the longitudinal cross-sectional view seen from the side of the water quality inspection apparatus for sewage tanks of this invention. It is a figure showing the middle of installing the water quality inspection apparatus for sewage tanks of this invention in a sewage tank. It is a figure showing the state which installed the water quality inspection apparatus for sewage tanks of this invention in the sewage tank. (a) is a top view of a straw lid, (b) is an upper cross-sectional view of a sewage bowl. It is a perspective view showing the state which attached the attachment to the main body. It is a partial cross section figure showing the state which attached the attachment to the main body. It is a figure showing the jig | tool for attaching the water quality test | inspection apparatus for sewage tanks to a sewage tank. It is the FIG. 4 equivalent view showing other embodiment of the water quality inspection apparatus for sewage tanks of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sewage water quality inspection device 12 Attachment part 14 Main body 16 Sensor 18 Data logger 20 Elastic band 24 Handle 28 Hinge 32 Drifting object prevention plate 32a Hole 34 One-way valve 36 Measurement tank 38 Fixed plate 38a Opening 40 Movable plate 44 Cable 46 Hanging metal fitting 46a Data logger attachment portion 46b 枡 lid attachment portion 50 Sewage basin 52 枡 lid 52a Through hole 56 Inlet pipe 58 Invert 80 Water sampling device

Claims (11)

A water quality inspection device that is installed in a sewage basin and inspects the quality of the wastewater that flows into the sewage basin,
A mounting portion that is attached in a stretched state by an elastic force within the pipe wall surface of the inlet pipe connected to the upstream side of the sewage tank,
A main body that is fitted in an invert in the cage to define a measurement tank;
A sensor that is fixed to the main body and measures the quality of the wastewater in the measurement tank;
A water quality inspection apparatus for sewage tanks, comprising:   The water quality inspection apparatus for sewage tanks according to claim 1, wherein the attachment portion is made of an elastic band having an arcuate cross-sectional shape.   The water quality inspection apparatus for sewage tanks according to claim 2, wherein a handle extending downstream is provided at each end of the elastic band.   The sewage sewage water quality inspection apparatus according to any one of claims 1 to 3, wherein the attachment portion and the main body are connected by a hinge so as to be bent.   The said main body is provided with the one-way valve which accept | permits the inflow of the waste_water | drain to the measurement tank from an upstream side, and prohibits the outflow of the waste_water | drain from a measurement tank. Water quality inspection device for sewage tanks as described in 1.   The one-way valve has a fixed plate that is inclined upward toward the upstream side and has an opening, and one end is fixed to the upper end of the fixed plate on the downstream side of the fixed plate, and the other end side is open. The water quality inspection apparatus for sewage tanks according to claim 5, further comprising a flexible movable plate that can be opened and closed.   The water quality inspection apparatus for a sewage tank according to claim 5 or 6, wherein a drifting material prevention plate having a large number of holes is disposed on the upstream side of the one-way valve. The said body, sewage squares for quality inspection according to any one of claims 1 to 7 attachment to Ri attached can der wherein Rukoto preparative having a shape that matches the inverting of the inner surface shape of the square apparatus.   The sewage basin according to any one of claims 1 to 8, wherein a data logger connected to the sensor via a cable and recording data from the sensor is suspended from a sewage jar lid. Water quality inspection device.   The data logger is suspended from the lid by way of a hanging bracket, and the hanging bracket has a data logger mounting portion to which the data logger is attached and a lid mounting portion to be attached to the lid. The logger mounting portion can penetrate in one direction with respect to the elongated through hole formed in the lid, and cannot penetrate in another direction, and the lid mounting portion cannot penetrate the through hole. The water quality inspection device for sewage tanks according to claim 9.   Furthermore, the water sampling device which pumps up the water drained from the measurement tank and collects the water, and the water sampling device operates when the measurement data obtained from the sensor satisfies a predetermined condition. The water quality inspection apparatus for sewage tanks according to any one of 1 to 10.

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