JPS642122Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention constantly collects liquid from the liquid level of the tank using a liquid collecting port that moves up and down in accordance with the liquid level of the liquid tank, where the liquid level fluctuates. The present invention relates to a surface liquid collection device.

(b) Prior Art Conventionally, when taking water from a water tank, etc., it is common to let the water flow out from an intake port provided at the bottom of the tank. In particular, when it is desired to take in water near the liquid level, a method is used in which a water intake port is provided near the liquid level on the side of the tank, or a water intake pipe is provided that opens near the tank liquid level and the water is taken from there.

Also, Utility Model Publication No. 13932/1983 and Utility Model Publication No. 39/1989
Publication No. 16674 discloses that a water intake port suspended near the liquid surface by a float and a water intake pipe are connected by an expandable pipe.
A hot water intake device is disclosed that always takes water from near the liquid level.

(c) Problems that the invention aims to solve In the conventional water intake method from near the liquid level, the water intake port is always near the liquid level in the tank, and water near the liquid level can be taken in, but the water in the tank cannot be taken in. When heating the liquid by circulating it through an external heat exchanger, etc., the heated liquid is injected into the tank from a certain height such as the side of the tank. It cannot avoid mixing with cold water and lowering the temperature.

The high-temperature water that circulates through the heater, etc. and returns to the tank is carefully poured into a position close to the liquid surface, avoiding mixing with the low-temperature water in the tank as much as possible.
Utilizing the difference in specific gravity of the liquid due to temperature, it is stored so that it does not mix with the low temperature water at the bottom, and when necessary, the high temperature water near the liquid surface is taken in, making efficient use of hot water. be able to.

Therefore, the present invention provides a liquid collection device that allows hot water to flow gently into the vicinity of the water surface in a tank, stores it so as not to mix with the low temperature water at the bottom of the tank, and can also take in high temperature water near the water surface. The purpose is to

(d) Means for Solving the Problem In order to solve the above purpose, the present inventor has conducted intensive research and found that the water collection port is always suspended near the liquid surface using a float, and the water collection port and intake pipe are expanded and contracted. In addition to communicating through a flexible pipe, by opening the inlet of the inflow pipe for hot water flowing in from an external heating device, etc., to the water intake pipe, the hot water flowing into the tank can be quietly kept close to the water surface in the tank. We have devised a device that can collect water from a water collection port that is always near the liquid surface as it flows in.

That is, the present invention consists of a float that floats on the liquid surface of a tank, a liquid collection port connected to the float, and an expandable system that connects the liquid collection port to a liquid collection pipe that communicates with a liquid collection hole provided at the bottom of the tank. The gist of the present invention is a surface liquid collection device comprising a pipe and a hot water inlet pipe opening into the liquid collection pipe.

Next, the present invention will be explained in more detail with reference to the drawings.
Figure 2 is a front view of the surface liquid collection device of the present invention;
The figure is a plan view of the same, and FIG. 1 is a sectional view along AA of the same. 1
is a lower liquid collection pipe fixed to a liquid collection hole 3 in the tank bottom 2, and a guide rod 6 is vertically provided in the center of the pipe through a support frame 5 made up of three brackets 4. Reference numeral 7 is a float whose entirety is hollow and sealed, with a sliding tube 8 that loosely fits on the guide rod 6 penetrating through the center, and can freely move up and down along the guide rod 6. Reference numeral 9 denotes an upper liquid collecting pipe, which is fixed to the lower end of a connecting bolt 10 fixed to a flange 11 extending from the upper edge of the float 7, and moves up and down together with the float 7. The upper liquid collection pipe 9 and the lower liquid collection pipe 1 are connected by a flexible telescoping pipe 12. The telescopic tube 12 is made of a cylinder made of a flexible sheet covered with a soft synthetic resin, rubber sheet, or cloth, and has both ends fixed to the upper and lower liquid collection tubes 9, 1 by means of fixing bands 28, and an intermediate portion between them. Reinforcement rings 13 are provided at an appropriate number of locations. The liquid level liquid collecting port 14 at the upper end of the upper liquid collecting pipe 9 is located slightly below the level of the liquid when the float 7 is floated on the liquid surface, and is located between it and the float 7 at an appropriate level for liquid to flow into the port. Provide spacing.

The peripheral edge of the flange 11 that protrudes from the upper edge of the float 7 is bent downward to form an annular cavity 15 with a constant depth inside. The lower end of the guide rod 6 is attached to the nut 1
6 and 16', it is fixed to the support frame 5 so that its vertical position can be adjusted, and a fixing fitting 17 is fitted to the tip of the guide rod 6 to fix the tip of the guide rod to the ceiling 19 of the tank, and the nut 18 is turned. The fixing fittings are pushed up and spread vertically between the tank bottom surface 2 and the ceiling 19, thereby fixing the entire device inside the tank. The float 7 may be solid, such as foamed synthetic resin, instead of hollow. A hot water inflow pipe 29 is connected to the side surface of the lower liquid collection pipe 1 , and its inlet opens into the lower liquid collection pipe 1 . When the water in the tank is circulated to the heat exchanger of the solar water heater or air conditioner and heated, the hot water is heated at a higher temperature than the water temperature in the tank.
The hot water is allowed to flow into the lower liquid collecting pipe 1 from this inflow pipe 29 .

(e) Effect When the surface liquid collection device of the present invention is installed in a tank where the liquid level fluctuates, the float 7 floats on the liquid level 20 and guides itself by following the rise and fall of the liquid level, as shown in Figure 1. It moves up and down along the rod 6, and is integrated with the upper liquid collection pipe 9.
It also goes up and down. The liquid level liquid collecting port 14 at the upper end of the upper liquid collecting pipe 9 is always located at a certain depth from the liquid level. As the float moves up and down, the telescopic tube 12 connecting the upper liquid collecting pipe 9 and the lower liquid collecting pipe 1 expands and contracts freely.
Since reinforcing rings 13 are provided at an appropriate number of locations, the cross section of the expandable tube 12 will not be crushed by external hydraulic pressure. The liquid near the liquid surface passes through the liquid level collection port 14 at the upper end of the upper liquid collection pipe 9, passes through the gap between the upper liquid collection pipe 9 and the float 7, passes through the expandable pipe 12, and the lower liquid collection pipe 1, and collects at the bottom of the tank. It flows down from hole 3. Liquid level liquid collection port 14
When the inflow speed of the liquid is high, the entire float 7 and upper liquid collecting pipe 9 are drawn into the liquid due to the inflow resistance of the liquid. However, when the lower end of the annular cavity 15 is submerged below the liquid level 20, The cross-sectional area increases and the buoyant force increases rapidly, and the float is no longer drawn into the liquid. The sliding hole of the sliding pipe 8 that penetrates through the center of the float 7 loosely fits into a guide rod fixed vertically upward from the center of the upper opening of the liquid collecting pipe at the bottom of the tank, and the float moves up and down along the guide rod. Therefore, the float always moves up and down along the guide rod, and the telescopic tube whose upper end is connected to the float and the liquid collecting pipe fixed to the float does not vibrate even when a large amount of water flows into the collecting pipe. There is no risk of damage due to vibration even if a large amount of water is collected.

When heating water in a tank by circulating it to an external heating device such as a solar water heater or a heat exchanger for an air conditioner, or when replenishing water with a higher temperature than the water in the tank from outside, Water is hot water inlet pipe 2
9 into the lower liquid collection pipe 1, and is quietly discharged near the water surface of the tank from the liquid level collection port 14 of the upper liquid collection pipe 9 near the water surface via the expandable pipe 12. The water with a small volume does not mix with the low-temperature, high-density water at the bottom of the tank, and is quietly stored in the upper layer near the water surface of the tank. Hot water inflow pipe 29
When water is taken from the liquid collection hole 3 at the same time as the hot water flows in from the hot water inflow pipe 29,
Water is taken directly through the liquid collection hole 3.

(f) Embodiment FIG. 4 shows an embodiment in which the surface liquid collection device of the present invention is used in a water intake port of a water tank in a public bath. 21
is a water tank, measuring 1m x 6m x 3m in height, and stores approximately 16 tons of water at all times. 22 is a hot water tank provided at the bottom of the water tank, which is heated by a boiler 23 and the hot water is sent to a bathtub 24 in the bathroom.
The system automatically replenishes only the amount of hot water in the hot water tank from the water tank 21 as needed. On the other hand, in the summer, when changing rooms and the like are cooled, a cooling device 25 using a water-cooled heat pump is used, and the water in the water tank 21 is circulated and used as cooling water, and the heat is used to raise the water temperature in the water tank. It has come to be used effectively. A cold water bath is installed in the bathroom, but in the summer it is necessary to cool the water temperature, and a heat pump type cooling device 26 is used for cooling, and the water in the water tank 21 is used as the cooling water for this cooling device. Used in circulation. Furthermore, even when a solar water heating device is used, the water in the water tank 21 is circulated and heated. In this way, the temperature of the water in the water tank is raised as much as possible to save fuel for the boiler 23. However, when the water in the water tank is circulated to the air conditioner and heated, the heated water becomes lighter and the water in the water tank 23 is heated.
It spreads near the water surface, and at the bottom of the water tank and the water surface.
A temperature difference of 15-20°C occurs. As shown in FIG. The reflux hot water of the cooling water flows directly into the liquid collection hole, and if the amount of reflux water is larger than the collected water volume, it is discharged from the upper liquid collection pipe 9 near the liquid level of the water tank via an expandable pipe. I did it like that. In this way, the warm return water of the cooling water is sent directly to the hot water tank or is quietly discharged onto the liquid surface of the water tank, and remains in the upper layer of the water tank without mixing with the water in the water tank.

By collecting the return hot water and the warm water near the water surface of the water tank in this way, when the temperature of the supplied tap water is 28℃, compared to the case where water is taken from the bottom of the water tank, We were able to reduce fuel consumption by approximately 20%.

(g) Effect of the invention According to the surface liquid collection device of the invention, it is possible to selectively collect liquid near the liquid level in the tank, and even when the height of the liquid level fluctuates, it is always possible to collect the liquid near the liquid level in the tank. The liquid collection port can be raised and lowered accordingly. Since the hot water inflow pipe 29 of the hot water flowing into the tank is opened into the lower liquid collection pipe 1, the inflowing hot water is quietly discharged near the water surface and does not mix with the low temperature water in the lower layer of the tank.
It separates into upper and lower parts due to the difference in specific gravity and stays together without mixing. If the surface liquid collection device of the present invention is attached to a water tank that circulates and recovers heat and supplies water to a boiler, etc., hot water from the surface of the water can be taken.
Significant fuel savings can be achieved. The surface liquid collection device of the present invention can be used to collect not only water but also any liquid from near the liquid surface, and can also be used to collect supernatant liquid in chemical equipment and the like.

[Brief explanation of drawings]

Figure 1 is an AA sectional view of the surface liquid collection device of the present invention, Figure 2 is a front view of the same, Figure 3 is a plan view of the same, and Figure 4 is a cross-sectional view of the surface liquid collection device of the present invention.
The figure shows an example in which the surface liquid collection device of the present invention is used in a water tank of a public bath. Explanation of symbols, 1... Lower liquid collecting pipe, 2... Tank bottom, 3... Liquid collecting hole, 4... Bracket, 5...
Support frame, 6... Guide rod, 7... Float, 8... Sliding pipe, 9... Upper liquid collecting pipe, 10... Connection bolt,
11... Flange, 12... Expandable tube, 13... Reinforcement ring, 14... Liquid level liquid collection port, 15... Annular cavity, 1
6, 16', 18...nut, 17...fixing metal fittings,
19...Ceiling, 20...Liquid level, 21...Water tank, 22...Hot water tank, 23...Boiler, 24
... Bathtub, 25 ... Air conditioner, 26 ... Cooling device, 27 ... Surface liquid collection device, 28 ... Fixing band, 29 ... Hot water inflow pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A float that has a sliding hole penetrating through the center and floats on the liquid surface of a tank, a liquid collection port connected to the float, and a liquid collection hole provided at the bottom of the tank. a liquid collection pipe leading to the liquid collection pipe, a guide rod that is vertically fixed and erected upward from the center of the upper opening of the liquid collection pipe and loosely fits into the sliding hole of the float; A surface liquid collection device comprising: an extensible pipe communicating with a liquid inlet; and a hot water inflow pipe opening into the liquid collecting pipe. (2) The surface liquid collection device according to claim 1, wherein the extensible tube is a cylinder made of a flexible sheet and provided with reinforcing rings at an appropriate number of locations.