JPH0552723U - Flowmeter - Google Patents

Abstract

(57) [Summary] [Purpose] The flow rate can be measured with a simple instrument and the measurement work itself can be simplified. [Structure] An amount of inflow water into the container body and an amount of outflow water from an outlet provided in the container body are balanced. The flow rate in this balanced state is determined by the size of the container, the head pressure depending on the level of the water surface, the opening area of the outlet, etc. Therefore, if the size of the container and the opening area of the outlet are fixed in advance, The level and the flow rate are uniquely associated with each other. Therefore, if the container body is provided with a scale corresponding to the water surface level, the flow rate can be measured from the height of the water surface level.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a simple flow meter which measures the flow rate of a fluid flowing down from a faucet or the like simply by putting the fluid in a container and allowing the fluid to flow out.

[0002]

[Prior art and its drawbacks]

 Normally, the flow rate of fluid is measured using an impeller flow meter, an oval flow meter, a vortex flow meter, an ultrasonic flow meter, and so on. However, in these flowmeters, the equipment itself is highly precise and large-scaled, and the flowmeter must be installed by installing the flowmeter in the middle of the pipeline, and the installation and removal work is extremely troublesome. there were. Further, as a conventional simple method for measuring the flow rate, a container having a fixed volume is prepared, and the time until the container becomes full is measured and the flow rate is calculated backward. However, in this case, the same flow rate measurement had to be repeated many times before setting the predetermined flow rate, which had the disadvantage of requiring a lot of time and effort.

[0003]

[Means for Solving the Problems]

 The present invention has been made by improving and removing the above-mentioned conventional problems, and provides a flow meter capable of measuring a flow rate by a simple method of flowing out a fluid from a container. Is.

Therefore, the means adopted by the present invention to solve the above-mentioned problem is achieved by balancing the amount of water flowing into the container body with the amount of water flowing out from the outlet provided in the container body. A flow meter for measuring the flow rate of the container, wherein the flow meter has a flow scale corresponding to the head pressure in the height direction of the container body.

[0005]

[Action]

 In the present invention, for example, the measuring container main body is arranged below the faucet, and in this state, the running water flows down through the container main body. Then, the water surface level in the container body is stabilized so that the water does not overflow from the container body and does not decrease. That is, the inflow water amount and the outflow water amount are balanced. Since the shape and size of the container body, the size of the outlet, etc. are fixed, the flow rate in the above-mentioned balanced state shows a constant value. It is possible to measure the flow rate by marking the position of the water surface level in this balanced state. On the other hand, the water level to be balanced needs to change depending on the head (head) pressure. Therefore, in the present invention, an auxiliary scale corresponding to the head pressure is provided in the height direction of the container body, and the scale when the water surface level is balanced is read to accurately measure the water volume. ..

[0006]

【Example】

 The structure of the present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 is an exploded perspective view of a flow meter 1 showing a first embodiment of the present invention. As shown in the figure, in this embodiment, there is a cylindrical container body 2 formed of a transparent or semi-transparent material to a predetermined size, and the bottom wall 3 thereof has a fan-shaped outlet. 4 is formed with an opening. A baffle plate 5 made of punching metal having a large number of small holes 7 is fitted and mounted in the container body 2 in a loosely fitted state so as to cover the outlet 4. The baffle plate 5 is for rectifying the water flowing into the container body 2 so that the water does not directly flow out from the outflow port 4. Thus, an auxiliary scale 6 for the amount of outflow water is provided at a predetermined height position on the outer peripheral surface of the cylindrical container body 2. For example, when the reference position is the zero scale 6a, this auxiliary scale 6 is provided with a scale 6b of +0.5 liter / min at a position higher by a predetermined size and -0.5 at a position lower by a predetermined size. A liter / minute scale 6c is attached.

Next, a case where the flow rate is measured by the flow meter 1 configured as described above will be described. First, for example, the container body 2 is arranged below the faucet, and tap water is allowed to flow down. When the amount of inflow water into the container body 2 is larger than the amount of outflow water, the water surface level gradually moves upward. When the inflow and outflow are balanced, the water level remains stopped. In this embodiment, the amount of outflow water is set to 8 liters / minute when the water surface level is stabilized by the zero scale 6a. This is determined by the size of the container body 2, the opening area of the outlet 4, the head pressure when the zero scale 6a has a water surface, and the like. The adjustment of the degree of twist of the faucet to stabilize the water surface level is extremely easy because the water surface level can be confirmed through the container body 2 made of a transparent or translucent material.

On the other hand, when the water surface level of the container body 2 is stabilized at the position of the scale 6b, the outflow water amount is increased by 0.5 liter / minute as compared with the case of the zero scale 6a. This is due to the increase in head pressure. Further, when the water surface level of the container body 2 is stable at the position of the scale 6c, the outflow amount of water is reduced by 0.5 liter / minute as compared with the case of the zero scale 6a due to the decrease in the head pressure. As described above, in the first embodiment, by balancing the inflow water amount into the container body 2 and the outflow water amount from the container body 2 at a predetermined water surface height position, the height position can be adjusted according to the height position. It is possible to measure the amount of water. In addition, in actual use, when preparing several types of containers having different sizes of the container body 2 and the opening area of the outlet 4, when the inflow water amount and the outflow water amount are balanced by the zero scale 6a. It is convenient if the flow rate of 6 liters / minute, 7 liters / minute, 8 liters / minute, 9 liters / minute, etc. is there.

Next, FIGS. 2 to 4 show a second embodiment of the present invention. 2 is a side view showing the whole of the flowmeter 8, FIG. 3 is a plan view thereof, and FIG. 4 is a longitudinal sectional view thereof. As shown in the figure, in this second embodiment, the container body for weighing has a double cylinder structure of an inner cylinder 9 and an outer cylinder 10 made of a transparent or translucent material, and the two cylinders face each other. A fitting portion between the concave groove 11 and the convex portion 12 is formed on the side wall surface to be rotatable between the two cylinders. By partially forming the concave groove 11 and the convex portion 12 in the circumferential direction, the inner cylinder 9 and the outer cylinder 10 can be rotated within a predetermined angle range. Thus, the bottom wall 13 of the inner cylinder 9 and the bottom wall 14 of the outer cylinder 10 are formed with crescent-shaped outlets 15 and 16 each having a gradually increasing opening area.

The two outlets 15 and 16 are formed between the upper end side peripheral surface of the outer cylinder 10 and the inner peripheral surface of the inner cylinder 9 corresponding to the upper end side outer peripheral surface. A flow rate scale 17 corresponding to the opening area is provided. Further, an auxiliary scale 6 corresponding to the head pressure is attached to the outer peripheral surface of the inner cylinder 9 as in the case of the first embodiment. The auxiliary scale 6 has a zero scale 6a indicating the reference water amount, a scale 6b that is +0.5 liters / minute more than this, and a scale 6c that is -0.5 liters / minute less than the zero scale 6a. ing.

A baffle plate 18 for preventing tap water from directly flowing out from the outlets 15 and 16 is fitted and mounted in the inner cylinder 9 as in the case of the first embodiment. There is. In this case, the baffle plate 18 has a plurality of portions 18a in which the outer peripheral side of the disc is linearly cut, and the lower surface side thereof has a protrusion 18b for forming a predetermined feeling with the bottom wall 13. Are formed.

When measuring the flow rate with the flow meter 8, the inner cylinder 9 and the outer cylinder 1o are relatively rotated to adjust the opening areas of the outlets 15 and 16, and the inner cylinder 9 is adjusted. The amount of water flowing in and the amount of water flowing out of the outlets 15 and 16 are balanced at the position of the zero scale 6a of the auxiliary scale 6 corresponding to the head pressure. That is, the water surface level is balanced in accordance with the position of the zero scale 6a of the auxiliary scale 6 corresponding to the head pressure. Therefore, the flow rate of the tap water discharged from the tap can be read by the flow rate scale 17 in the balanced state.

When it is desired to increase or decrease the outflow water amount by a predetermined water amount from such a water amount measurement state, the water surface level is raised from the position of the zero scale 6a to the position of the scale 6b to stabilize the scale. It may be stabilized by lowering it to the position 6c.

FIG. 5 is a perspective view of a flow meter 19 showing a third embodiment of the present invention. In this embodiment, the outer peripheral wall of the container body 20 is provided with an outlet 21 which is a V-shaped continuous cutout groove whose opening area decreases from the upper end side to the lower side. The amount of water flowing out from the outflow port 21 also takes into consideration the change in flow rate due to the head pressure with respect to the amount of water flowing out due to the opening area thereof. This means that the elements of 6 and 6 are integrally incorporated. Other operational effects are the same as those in the first and second embodiments.

By the way, the present invention is not limited to the above-described embodiments, but can be appropriately modified. For example, in the first embodiment shown in FIG. 1, it is possible to omit the auxiliary scale 6 corresponding to the head pressure and use the upper end surface of the container body 2 as one scale. That is, by adjusting the balance between the inflow water amount into the container body 2 and the outflow water amount from the container body 2 by adjusting the discharge water amount of the faucet so that the water surface level is stable at the upper end surface of the container body 2, It is also possible to measure the flow rate of. Further, the overall shape of the container body, the shape of the outlet, the opening area, etc. may be appropriately changed according to the flow rate to be measured.

[0017]

[Effect of the device]

 As described above, according to the present invention, the amount of inflow water into the container body and the amount of outflow water from the outlet provided in the container body are balanced, and the auxiliary pressure is added with the head pressure indicated by the water surface level at that time. It is possible to measure the flow rate accurately by reading the scale. Therefore, the flow meter itself can be configured by the container body and the scale attached thereto, and the structure can be made extremely simple. Therefore, it is possible to provide the flow meter at a reasonable price.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a flow meter according to a first embodiment of the present invention.

FIG. 2 is a front view of a flow meter according to a second embodiment of the present invention.

FIG. 3 is a plan view of a flowmeter according to a second embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of a flowmeter according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a flow meter according to a third embodiment of the present invention.

[Explanation of symbols]

 1 ... Flowmeter 2 ... Container body 3 ... Bottom wall 4 ... Outflow port 5 ... Baffle plate 6 ... Auxiliary scale corresponding to head pressure 6a ... Zero scale 6b ... + Scale 6c ...- Scale

Claims (2)

[Scope of utility model registration request] 1. A flowmeter for measuring the flow rate by balancing the amount of water flowing into the container body and the amount of water flowing out from an outlet provided in the container body, the height of the container body. A flow meter characterized by a flow scale corresponding to the head pressure in the direction. 2. The flowmeter according to claim 1, wherein the container body is formed of a transparent or translucent material.