PH METER
Technology background
There are known methods for preventing foreign matter from adhering to an object, and known methods for removing foreign matter adhering to an object.
For example, there is a known dirt adhesion prevention device that prevents dirt adhesion to a protection lens provided so as to cover a surface transmitting or receiving a detection signal of a sensor used under an environment where dust exists, the dirt adhesion prevention device including: a cover member covering the protection lens and having a gas flow path formed; and a gas supply unit supplying a gas to inside the cover member, in which the cover member includes a gas introduction unit into which a gas is introduced from the gas supply unit at a position away from the protection lens, a gas diffusion unit that diffuses the introduced gas in a direction of the protection lens, and a gas discharge unit that discharges a gas from the gas diffusion unit in a direction away from the protection lens at a position corresponding to the protection lens, and the gas diffusion unit has a cuboid shape.
There is a known method in which a hoisting body mounted with a glass surface detection sensor, a glass surface cleaning device, and a photocatalytic film formation device moves laterally and up and down along a glass surface of a building, the glass surface detection sensor detects a position and a size of a glass surface of a building, and then the glass surface cleaning device cleans the glass surface, and the photocatalytic film formation device forms a photocatalytic film on the glass surface.
Current Problems
Recently, hydroponic culture is widely practiced.
PH sensors that measure the PH of an aqueous solution used for hydroponic culture are known.
For example, a PH sensor having a surface covered with a glass film is left immersed in an aqueous solution, and dirt adheres to the glass film.
Due to this, it is preferable to immerse a PH sensor in an aqueous solution at the time of measurement and not to immerse a PH sensor in an aqueous solution at the time of non-measurement.
This measurement is always performed manually.
However, there is a problem that manual measurement is troublesome.
measurement of PH of an aqueous solution.
Means for Solving Problems
In order to achieve the above object, the disclosed meter is provided.
This measurement device includes a base including a supporting portion forming a fulcrum; and a rod-shaped body including a supported portion supported by the supporting portion, provided with a measurement unit on one side across the supported portion, and is provided with a storage unit storing a fluid on the other side, in which the rod-shaped body keeps horizontal when the storage unit is filled with a fluid, and the rod-shaped body inclines on the measurement unit side when the storage unit is not filled with a fluid, and the storage unit is immersed into a solution.
This can achieve automation of measurement of a solution.
Scope of Claims
[Claim 1]
A measurement device comprising of a base including a supporting portion forming a fulcrum; and a rod-shaped body including a supported portion supported by the supporting portion, provided with a measurement unit on one side across the supported portion, and is provided with a storage unit storing a fluid on the other side, wherein the rod-shaped body keeps horizontal when the storage unit is filled with a fluid, and the rod-shaped body inclines on the measurement unit side when the storage unit is not filled with a fluid, and the storage unit is immersed into a solution.
[Claim 2]
The measurement device according to claim 1, wherein when the rod-shaped body inclines on the storage unit side, a fluid stored in the storage unit flows out of the storage unit and the rod-shaped body inclines on a measurement side.
[Claim 3]
The measurement device according to claim 1, further comprising of a power unit that inclines the rod-shaped body on the storage unit side.
[Claim 4]
The measurement device according to claim 3, wherein the power unit includes a second installation object including a supporting portion forming a fulcrum and a second rod-shaped body including a supported portion supported by the supporting portion and is provided with a second storage unit storing a fluid on one side across the supported portion, the second rod-shaped body inclines on an opposite side to a side provided with the second storage unit when a fluid stored in the second storage unit is within a predetermined amount, and the rod-shaped body inclines on the storage unit side due to an own weight acting on the other end of the rod-shaped body when a fluid stored in the second storage unit is greater than a predetermined amount.
[Claim 5]
The measurement device according to claim 1, wherein a pipe through which a cleaning liquid passes is disposed inside the rod-shaped body, and the cleaning liquid passes through the pipe and is supplied to the measurement unit when the rod-shaped body is kept horizontal.
[Claim 6]
The measurement device according to claim 5, further comprising of an accommodation body including an opening, accommodating the measurement unit, and storing a cleaning liquid to be supplied to the measurement unit, wherein the cleaning liquid flows out of the opening when the rod-shaped body inclines on the measurement unit side.
WATER SHUTOFF VALVE DEVICE
Technology background
In recent years, hydroponic cultivation has become increasingly widespread. A pH sensor for measuring the pH of a nutrient solution used in hydroponic cultivation is known. For example, when a pH sensor having a surface covered with a glass membrane is left immersed in a nutrient solution, dirt adheres to the glass membrane. Therefore, it is preferable that the sensor be immersed in the solution only during measurement and not immersed during non-measurement periods.
In this regard, for example, a measuring device is known which comprises: a base provided with a support portion forming a fulcrum; a rod-like body provided with a supported portion supported by the support portion; a measuring portion provided on one side of the rod-like body with respect to the supported portion; and a storage portion for storing fluid provided on the other side. When the storage portion is filled with fluid, the rod-like body is maintained in a horizontal state. When the storage portion is not filled with fluid, the rod-like body tilts toward the measuring portion side so that the measuring portion is immersed in the solution.
Current Problems
In the aforementioned Patent Document 1, it is described that a pipe through which a cleaning liquid passes is disposed inside the rod-like body, and that when the rod-like body is maintained in a horizontal state, the cleaning liquid passes through the pipe and is supplied to the measuring portion. However, the specific method thereof is not disclosed. In one aspect, the present invention aims to achieve automation of the supply of the cleaning liquid with a simple structure.
Means for Solving Problems
To achieve the above object, a disclosed water shutoff valve device is provided. This water shutoff valve device comprises: a pipe supported by a fulcrum and tiltable to one side or the other; a supply port for supplying liquid to the pipe; a first valve that shuts off outflow of liquid from the pipe when the pipe tilts to one side; and a second valve disposed on the opposite side of the supply port via the first valve when the pipe tilts to one side. When the pipe is not tilted, the first valve and the second valve do not shut off outflow of liquid from the pipe. When the pipe tilts to the other side, the second valve suppresses inflow of liquid from outside of the pipe toward the first valve side.
Scope of Claims
[Claim 1]
A tube supported by a fulcrum and tilting to one side or the other side; A supply port configured to supply a liquid to the tube; A first valve configured to stop an outflow of the liquid from the pipe when the pipe is inclined to one side; A second valve disposed on an opposite side of the first valve from the supply port; Wherein: When the pipe is not inclined, the first valve and the second valve do not stop the outflow of the liquid from the pipe When the pipe is inclined to the other side, the second valve suppresses the inflow of the liquid from the outside of the pipe to the first valve side. The water shut-off valve device according to claim 1
[Claim 2]
A base including a support portion forming a fulcrum; A supported portion supported by the support portion, wherein a measurement unit is provided on one side of the supported portion, and And a rod-shaped body provided with a storage part for storing a fluid on the other side. The rod-shaped body is kept horizontal when the storage portion is filled with the fluid, and Is not satisfied, the rod-shaped body is inclined to the measurement unit side and the measurement unit is immersed in the solution A pipe through which a cleaning liquid passes is disposed inside the rod-shaped body A supply port configured to supply a liquid to the tube, a first valve configured to stop an outflow of the liquid from the tube when the tube is inclined toward the measurement unit side, and a second valve disposed on an opposite side of the supply port via the first valve When the rod-shaped body is kept horizontal, the first valve and the second valve do not stop the outflow of the liquid from the pipe, and the cleaning liquid is supplied to the measurement unit through the pipe The second valve suppresses inflow of the liquid from the outside of the pipe toward the first valve when the pipe is inclined toward the storage portion. The measurement device according to claim 1