JP2015068039A - Drainage system of water tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage system of a water tank capable of stably maintaining a valve opening state of a drain valve in draining.SOLUTION: A drainage system 1 of a water tank comprises a wash basin (a water tank) 2, a drain port 3 formed in a bottom part of the wash basin 2, a drain valve 4 for opening-closing the drain port 3 and a drain pipe 5 connected to a lower part of the drain port 3, and is provided with a pressure adjustment mechanism (an air circulation part 6 and a check valve 7) for cutting off the communication between the inside of the drain pipe 5 and the atmosphere in a positive pressure state on the inside of the drain pipe 5 and also opening the communication between the inside of the drain pipe 5 and the atmosphere in a negative pressure state on the inside of the drain pipe 5, between the inside of the drain pipe 5 and the atmosphere.

Description

  The present invention relates to a drainage system for an aquarium such as a washbasin and a bathtub.

Conventionally, in the drainage system of aquarium such as a washbasin of a wash basin or a bathtub, when draining the water stored in the aquarium, the drain outlet that closes the drain outlet is moved upward to open the drain outlet. Draining.
In such an aquarium drainage system, when the drain plug is closed during drainage, the drain pipe becomes negative pressure due to the siphon force, and a large force is required to open the drain plug from this state. It is difficult to open the stopper. For this reason, Patent Document 1 discloses a drainage system for a water tank that includes a negative pressure removing unit that removes negative pressure in a drain pipe so that the drain plug can be easily opened.

  The negative pressure removal means of the drainage system of the water tank of patent document 1 is provided with the air introduction pipe connected to the drainage pipe, and the check valve provided in the connection part of a drainage pipe and an air introduction pipe. The check valve is configured to be closed during drainage due to water pressure due to water flow, and to be opened due to negative pressure in the drainage pipe when drainage is not being performed.

JP 2008-144508 A

Here, in the drainage system of the aquarium of Patent Document 1, the check valve is forcibly closed by the water flow during drainage to prevent the inflow of air into the drainpipe. It becomes. At this time, when the drain plug is pushed up just above the drain port by a wire or magnetic force to open the drain port, a downward load is applied to the drain plug due to water head pressure or water flow. For this reason, the open state of the drain plug during drainage is not stably maintained, and the drain plug may be unintentionally closed.
For such problems, it is conceivable to increase the strength of the wire and magnetic force to push up the drain plug, but there is a risk that the member will become complicated, large, and expensive.

  This invention is made | formed in view of the situation mentioned above, and it aims at providing the drainage system of the aquarium which can maintain the opening state of a drain cock stably in drainage.

  To achieve the above object, a water tank drainage system according to the present invention is connected to a water tank, a drain port formed at the bottom of the water tank, a drain plug for opening and closing the drain port, and a lower part of the drain port. A drainage system for a water tank comprising a drainage pipe, wherein the communication between the drainage pipe interior and the atmosphere is blocked between the drainage pipe interior and the atmosphere when the interior of the drainage pipe is in a positive pressure state. A pressure adjustment mechanism is provided.

In the present invention, when the water tank is opened from the state where water is stored, the water flows into the drainage pipe immediately after opening and the pressure inside the drainage pipe rises, but the pressure adjustment mechanism connects the inside of the drainage pipe to the atmosphere. Therefore, the inside of the drain pipe can be maintained at a positive pressure. As a result, an upward force from the drain pipe side toward the water tank side acts on the drain plug.
This upward force acts in a direction that counteracts the downward force due to the water head pressure and water flow acting on the drain plug, so that when opening from the state where water is stored in the aquarium, it is ensured with a small force. In addition, the open state of the drain plug during drainage can be stably maintained with a smaller force than before.

In particular, in the case of a drain plug that switches between opening and closing with a magnetic force, the magnetic force required to maintain the open state can be reduced, and thus the member can be reduced in size.
Also, since the head pressure acting on the drain plug and the force in the direction to counteract the force caused by the water flow can be applied, it is possible to cope with a larger head pressure than before, so even when the water depth is deeper than before, The open state of the drain plug can be stably maintained.

  Further, in the water tank drainage system according to the present invention, the pressure adjustment mechanism may be configured to open the communication between the inside of the drainage pipe and the atmosphere when the inside of the drainage pipe is in a negative pressure state.

  By comprising in this way, it can prevent that the inside of a drain pipe becomes negative pressure. As a result, when the drain plug is closed during drainage, it is possible to prevent negative pressure inside the drain pipe due to siphon force, so negative pressure does not act on the drain plug that closes the drain port. The drain plug can be easily opened again.

  Further, in the water tank drainage system according to the present invention, the pressure adjusting mechanism is connected to the drain pipe and is provided so as to be able to communicate between the drain pipe and the atmosphere, and the air circulation section. Provided at a position separated from the connection point with the drain pipe, and when the inside of the drain pipe is in a positive pressure state, the communication between the drain pipe of the air circulation portion and the atmosphere is blocked, and the inside of the drain pipe is a negative pressure. In this state, it is preferable to include a check valve that opens the communication between the drain pipe of the air circulation unit and the atmosphere.

  With this configuration, when the water tank is opened from the state where water is stored, water flows into the drainage pipe immediately after opening, the air in the drainage pipe is pushed out to the air circulation part, the check valve is closed, and the reverse The inside of the air circulation part on the drain pipe side than the stop valve can be maintained in a positive pressure state. Thereby, an upward force from the drain pipe side to the water tank side acts on the drain plug, and the open state of the drain plug during drainage can be stably maintained.

  In the water tank drainage system according to the present invention, the air circulation unit may also serve as an overflow pipe of the water tank.

  By configuring in this way, the pressure adjustment mechanism can be configured simply by providing a check valve in a conventional overflow pipe, so that the structure can be simplified.

According to the present invention, when the water tank is opened from the state where water is stored, water flows into the drain pipe immediately after opening and the pressure inside the drain pipe rises. Therefore, the inside of the drainage pipe can be maintained at a positive pressure. As a result, an upward force from the drain pipe side toward the water tank side acts on the drain plug.
This upward force acts in a direction that counteracts the downward force due to the water head pressure and water flow acting on the drain plug, so that when opening from the state where water is stored in the aquarium, it is ensured with a small force. In addition, the open state of the drain plug during drainage can be stably maintained with a smaller force than before.

In particular, in the case of a drain plug that switches between opening and closing with a magnetic force, the magnetic force required to maintain the open state can be reduced, and thus the member can be reduced in size.
Also, since the head pressure acting on the drain plug and the force in the direction to counteract the force caused by the water flow can be applied, it is possible to cope with a larger head pressure than before, so even when the water depth is deeper than before, The open state of the drain plug can be stably maintained.

It is a figure which shows an example of the drainage system of the water tank by embodiment of this invention, and shows a mode that the non-return valve is open | released. It is a figure which shows an example of the drainage system of the water tank by embodiment of this invention, and shows a mode that the non-return valve is closing. It is a figure which shows a drain plug and illustrates a closed state. It is a figure which shows a drain plug and illustrates an open state. (A) is a figure explaining a check valve, (b) is a figure explaining a flap. It is a figure which shows the other form of an air inflow tube. It is a figure which shows the other form of a non-return valve.

Hereinafter, a water tank drainage system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
As shown in FIGS. 1 and 2, a water tank drainage system 1 according to the present embodiment opens and closes a washbasin (water tank) 2 of a washbasin, a drainage port 3 formed in the washbasin 2, and a drainage port 3. A drain plug 4, a drain pipe 5 connected to the lower part of the drain port 3, an air circulation part (pressure adjusting mechanism) 6 connected to the drain pipe 5, and a check valve (pressure) connected to the air circulation part 6 Adjustment mechanism) 7. 1 shows a state where the check valve 7 is opened, and FIG. 2 shows a state where the check valve 7 is closed.

  The basin 2 is formed to a predetermined depth capable of storing water W, a drain port 3 is formed at the bottom, and an overflow port 21 is formed near the upper end of the side surface. Further, when the basin 2 is provided on the upper part of the basin 2 or on a counter (not shown) or the like, an operation unit 22 for operating the drain plug 4 is provided on the counter.

  As shown in FIG. 3, the drain pipe 5 is connected to the drain outlet 3 and attached to the lower part of the basin 2 in a hanging manner, and connected to the downstream side of the drain outlet pipe 51. A connecting pipe 52, a drainage L pipe 53 connected to the downstream side of the connecting pipe 52, and a trap pipe 54 (see FIGS. 1 and 2) connected to the downstream side of the drainage L pipe 53 are provided.

  As shown in FIGS. 3 and 4, the drain plug 4 includes a plug body 41 that can open and close the drain port 3, and an opening / closing drive unit 42 that drives the plug body 41 to open and close. 3 shows a state in which the plug body 41 blocks the drain port 3 (closed state), and FIG. 4 shows a state in which the plug body 41 opens the drain port 3 (open state). Yes.

The opening / closing drive unit 42 extends in the vertical direction, has a rod 43 with a stopper body 41 fixed to an upper end 43a, a first magnet 44 fixed to a lower end 43b of the rod 43, and a lower portion of the first magnet 44. A provided second magnet 45, a magnet holder 46 that supports the second magnet 45, and a piston 47 and a wire 48 that operate the magnet holder 46 are provided.
Among these members, the rod 43 is provided so as to pass through the drain port connecting pipe 51 and the connecting pipe 52, and the lower end portion 43 b of the rod 43 and the first magnet 44 are arranged inside the drain L pipe 53. Has been. The second magnet 45, the magnet holder 46, and the piston 47 are accommodated in a case 49 provided at the lower portion of the drainage L pipe 53, and one end of the wire 48 is connected to the piston 47, and the other end is an operating portion. 22 (see FIGS. 1 and 2).

The rod 43 is configured to be movable in the vertical direction. When the rod 43 moves upward, the plug body 41 fixed to the upper end portion 43a is separated from the drain port 3, and the drain port 3 is opened. On the other hand, when the rod 43 moves downward, the plug body 41 is arranged at a position covering the drain port 3 to close the drain port 3.
The first magnet 44 is formed in a substantially cylindrical shape, and an S pole and an N pole are formed on one side 44a and the other side 44b in the axial direction, and one of the S pole and the N pole is the upper side 44a, and the other is It is being fixed to the rod 43 so that it may become the lower side 44b. In the present embodiment, the upper 44a is installed as the S pole and the lower 44b as the N pole.

The second magnet 45 is formed in a substantially cylindrical shape like the first magnet 44, and an S pole and an N pole are formed on one side 45a and the other side 45b in the axial direction.
The second magnet 45 is arranged at a position where the base end side 45a arranged at a position close to a shaft portion 46a (described later) of the magnet holder 46 is farther from the shaft portion 46a than the S pole and the base end portion side 45a. The tip end side 45b is firmly fixed so as to be an N pole.

The magnet holder 46 is disposed in the case 49 so as to be rotatable about the shaft portion 46a.
The shaft portion 46 a extends in a substantially horizontal direction, is provided at an upper portion on the left end side of the magnet holder 46 in the closed state shown in FIG. 3, and both ends are supported by the inner surface of the case 49.
A piston 47 capable of contacting and separating is provided at a portion below the shaft portion 46 a at the left end of the magnet holder 46.

The piston 47 is configured to be movable in the left-right direction in FIGS. 3 and 4 by being pushed or pulled by the wire 48 by the operation of the operation unit 22.
Then, when the piston 47 moves to the right side by the operation of the operation unit 22 as shown in FIG. 4, the magnet holder 46 is pushed up by the piston 47 and pivots upward by about 90 ° around the shaft portion 46a. The base end side (S pole) 45a of the magnet 45 faces vertically downward, and the tip end side (N pole) 45b faces vertically upward. When the piston 47 moves to the left as shown in FIG. 3 from the state of FIG. 4, the magnet holder 46 is rotated about 90 ° downward about the shaft portion 46a, and the base end side ( S pole) 45a faces left in the horizontal direction, and tip side (N pole) 45b faces right in the horizontal direction.

  As shown in FIG. 4, when the piston 47 moves to the right side and the magnet holder 46 rotates about 90 ° upward about the shaft portion 46a, the second magnet 45 has an N pole (tip portion side 45b). Is arranged at a position facing the north pole (lower end side 44b) of the first magnet 44. When the piston 47 moves to the left side from the state of FIG. 4 and the magnet holder 46 rotates about 90 ° downward about the shaft portion 46a, the second magnet 45 has the S pole ( The base end side 45a) is arranged to be closer to the N pole (lower end side 44b) of the first magnet 44 than the N pole (tip end side 45b).

Thereby, when the piston 47 moves to the left side, an attractive force acts between the north pole of the first magnet 44 and the south pole of the second magnet 45, and a downward force acts on the rod 43, The stopper main body 41 is lowered to close the drain port 3.
When the piston 47 moves to the right side, a repulsive force acts between the north pole of the first magnet 44 and the north pole of the second magnet 45, and an upward force acts on the rod 43. The main body 41 is raised upward to open the drainage port 3.

Returning to FIGS. 1 and 2, the air circulation portion 6 is a tube formed of, for example, resin, and the upper end portion 6 a is connected to the overflow port 21 of the washbasin 2 via the check valve 7, and the lower end portion. 6 b is connected to the drain pipe 5. In the present embodiment, the lower end portion 6 b of the air circulation unit 6 is connected to the drain port connection pipe 51 (see FIGS. 3 and 4) of the drain pipe 5. Thereby, the air circulation part 6 is comprised so that communication between the inside of the drain pipe 5 and air | atmosphere is possible.
The check valve 7 is configured to be able to switch between communication and blocking between the basin 2 side and the drain pipe 5 side of the air circulation unit 6.
The check valve 7 opens the air circulation part 6 at normal time (no load) and communicates between the inside of the drain pipe 5 and the atmosphere, and the drain pipe 5 side of the check valve 7 is normal. In the pressure state, the air circulation part 6 is closed, and the drain pipe 5 side can be maintained in a positive pressure state.

As shown in FIG. 5 (a), the check valve 7 according to the present embodiment includes a cylinder 71 having one end connected to the overflow port 21 of the basin 2 and the other end connected to the air circulation portion 6, and a cylinder. A flap 73 that is rotatable about a shaft 72 in the body 71 is provided. Then, the flap 73 rotates around the shaft portion 72 in the cylinder 71 to open and close the cross section of the cylinder 71.
The flap 73 is normally configured to be opened by forming a very small gap with the inner peripheral surface of the cylinder 71 without opening the entire cross section of the cylinder 71. The portion where the flap 73 normally opens the cylindrical body 71 is disposed at a position far from the pivot shaft 72, and the tip of the flap 73 (the farthest end position from the shaft 72). Air is configured to circulate in the vicinity.
Thereby, when the inside of the drain pipe 5 becomes a positive pressure, the air to pass through the air circulation part 6 and flow out to the basin 2 side pushes the front end part of the flap 73 far from the rotating shaft part 72, Since the pressed flap 73 closes the cross section of the cylinder 71, it is necessary to close the check valve 7 (flap 73) compared to the case where the flap 73 opens the entire cross section of the cylinder 71. The power can be reduced. For this reason, when the drain pipe 5 side of the air circulation part 6 becomes a positive pressure, it is possible to prevent the check valve 7 from being immediately closed and air to escape to the basin 2 side.
Further, as shown in FIG. 5B, the flap 73 is provided with a packing 74 such as rubber at a contact position with the cylinder 71 when the cylinder 71 is closed.

The air circulation unit 6 also serves as an overflow pipe of the basin 2. When a certain amount or more of water W is stored in the basin 2 and flows out of the overflow port 21, the water W passes through the air circulation unit 6. It is configured to flow into the drain pipe 5.
The check valve 7 is configured to be further openable by the water flow of the water W flowing out from the overflow port 21.

Next, the effect | action of the drainage system of the water tank mentioned above is demonstrated using drawing.
According to the drainage system 1 of the aquarium according to this embodiment, the inside of the drain pipe 5 and the atmosphere are configured to be communicated with each other by the air circulation unit 6, thereby preventing the inside of the drain pipe 5 from becoming a negative pressure. be able to. As a result, when the drain plug 4 is closed during drainage, it is possible to prevent the inside of the drain pipe 5 from becoming negative pressure due to siphon force, so that negative pressure is applied to the plug body 41 closing the drain port 3. The plug body 41 can be easily opened again with a small force.

Further, when the basin 2 is opened from the state where the water W is stored, the water W flows into the drain pipe 5 immediately after opening and the pressure inside the drain pipe 5 is increased. Since the communication between the inside and the atmosphere is blocked, the air circulation part 6 and the drain pipe 5 can be maintained in a positive pressure state. As a result, an upward force from the drain pipe 5 side toward the basin 2 side acts on the plug body 41.
Then, when this upward force acts in a direction that counteracts the downward force due to the water head pressure and water flow acting on the plug body 41, when opening the plug from the state in which the water W is stored in the basin 2, The plug body 41 can be further opened with a small force, and the opened state of the plug body 41 during drainage can be stably maintained with a smaller force than before.

In particular, as in the present embodiment, in the case of the drain plug 4 that switches between opening and closing by magnetic force, the magnetic force required to maintain the open state can be reduced, so the first magnet 44 and the second magnet Members such as the magnet 45 can be reduced in size.
In addition, since the head pressure acting on the drain plug 4 and the force in the direction of canceling out the force caused by the water flow can be applied, it is possible to cope with a head pressure higher than the conventional one. The open state of the drain plug 4 inside can be stably maintained.
In addition, it has been confirmed by experiments that the same drainage plug can be opened deeper when the air circulation part 6 and the check valve 7 are provided than when the air circulation part 6 and the check valve 7 are not provided. did it.

  Moreover, since the air circulation part 6 also serves as the overflow pipe of the basin 2, since the pressure adjusting mechanism can be configured simply by providing the check valve 7 in the overflow pipe provided conventionally, The structure of the table can be simplified.

As mentioned above, although embodiment of the drainage system of the aquarium by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the above-described embodiment, the drainage system of the wash basin is used. However, the drainage system is not limited to the wash basin, and may be a drainage system of a water tank that stores and uses water such as a bathtub.
Moreover, in said embodiment, although the air circulation part 6 serves as the overflow pipe, you may provide the air circulation part 6 separately from the overflow pipe.
In the above embodiment, the drain plug 4 is configured to open and close the plug body 41 by magnetic force. However, the drain plug 4 is configured to open and close the plug body 41 with a wire connected to the plug body 41, or to the upper portion of the plug body 41. A chain may be provided, and the drain port 3 may be opened and closed by lifting or lowering the chain.

In the above embodiment, the check valve 7 normally connects the drainage pipe 5 and the atmosphere, but normally closes the basin 2 side and the drainage pipe 5 side, and the drainage pipe 5. It is good also as a structure which opens the washbasin 2 side and the drain pipe 5 side when the side becomes negative pressure and when overflowing water W flows into the air circulation part 6.
For example, as shown in FIG. 6, a check valve 7 is provided in the middle of a pipe extending in a vertical direction or an obliquely downward direction in which the overflow water W is directed downward from above in the air circulation portion 6, and overflows. The check valve 7 may be opened by the gravity of the water W flowing into the air circulation part 6.
When the check valve 7 normally closes the basin 2 side and the drain pipe 5 side, a resin sheet is used in place of the packing 74 made of rubber or the like in the portion where the check valve 7 contacts the cylinder 71. It is preferable to adopt a configuration in which, for example, is attached. By doing in this way, it can prevent that packing 74, such as rubber | gum, welds to the cylinder 71 over time.

  In the above embodiment, the check valve 7 is provided between the wash basin 2 and the upper end 6 a of the air circulation part 6. The basin 2 and the air are located at a position where the air can be confined in the air circulation portion 6 and maintained in a positive pressure state in the drain pipe 5 when the check valve 7 is closed when the check valve 7 is closed. It may be provided other than between the upper end part 6a of the circulation part 6. For example, the pipe body of the air circulation part 6 is divided into the basin 2 side (upper side) and the drainage pipe 5 side (lower side), and a check is made between the basin 2 side and the drainage pipe 5 side of the pipe body. A valve 7 may be provided.

  Further, as shown in FIG. 7, the cylindrical body 71 of the check valve 7 is formed with a convex portion 75 for reducing the area of the air flow passage when the flap 73 opens the cylindrical body 71. Also good. By configuring in this way, the force required for closing the check valve 7 can be further reduced, so that the check valve immediately when the drainage pipe 5 side of the air circulation part 6 becomes positive pressure. 7 can be closed and air can be prevented from escaping to the basin 2 (atmosphere) side.

  Moreover, in said embodiment, a pressure regulation mechanism is provided with the air distribution part 6 and the non-return valve 7, and when the non-return valve 7 is in the state where the inside of the drain pipe 5 is a positive pressure, the inside of the drain pipe 5 and the atmosphere When the inside of the drain pipe 5 is in a negative pressure state, the communication between the inside of the drain pipe 5 and the atmosphere is opened. However, when the inside of the drain pipe is in a positive pressure state, the drain pipe 5 What is necessary is just the structure which interrupts | blocks communication with the inside of the inside and the atmosphere.

1 Drainage system for aquarium 2 Basin (aquarium)
3 Drain port 4 Drain plug 5 Drain pipe 6 Air circulation part (pressure adjustment mechanism)
7 Check valve (pressure adjustment mechanism)
21 Overflow port

Claims (4)

In the drainage system of the aquarium, comprising a water tank, a drain port formed at the bottom of the water tank, a drain plug for opening and closing the drain port, and a drain pipe connected to a lower part of the drain port,
A water tank provided with a pressure adjusting mechanism for blocking communication between the inside of the drain pipe and the atmosphere between the inside of the drain pipe and the atmosphere when the inside of the drain pipe is in a positive pressure state Drainage system.   2. The drainage system for an aquarium according to claim 1, wherein the pressure adjusting mechanism opens communication between the inside of the drain pipe and the atmosphere when the inside of the drain pipe is in a negative pressure state. The pressure adjusting mechanism is connected to the drain pipe and is provided so as to allow communication between the drain pipe and the atmosphere; and
Provided at a position away from the connection location between the air circulation part and the drain pipe, and in a state where the inside of the drain pipe is at a positive pressure, the communication between the drain pipe of the air circulation part and the atmosphere is cut off, The drainage system for an aquarium according to claim 2, further comprising: a check valve that opens communication between the drainage pipe of the air circulation unit and the atmosphere when the inside of the drainage pipe is in a negative pressure state. .   The water tank drainage system according to claim 3, wherein the air circulation unit also serves as an overflow pipe of the water tank.

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