JP7253687B2 - Drainage device - Google Patents

Description

The present invention relates to a drainage device, and more particularly, when hot water stored in a tank body exceeds an arbitrary set water level, the surplus water is discharged and the water level in the tank body is lowered to an arbitrary level. It relates to a retaining drainage device.

2. Description of the Related Art A drainage device is known for draining hot water generated inside a tank body to a sewer side in a device such as a washbasin, a sink, a bathtub, etc., which has a tank body and generates drainage when used.
The drainage device forms a drain port in the bottom surface of the tank body, and discharges hot water in the tank body to the sewer side from the drain port using a drain pipe. In addition, by forming an overflow drain port on the side surface of the tank body, when hot water is stored up to the overflow drain port, surplus water flows into the overflow drain port and the overflow channel continues from the overflow drain port. It is a structure that discharges to the sewage side through. This prevents hot water from being stored above the water level at which the overflow outlet is formed, and prevents hot water from overflowing from the tank body.

Here, in recent years, for reasons such as design, cleanability, hygiene, etc., there are cases where the overflow drain port is not formed in the tank body, and it is impossible to drain surplus water in such a tank body. rice field.

Therefore, in the drainage device described in Patent Document 1, a structure is proposed in which surplus water is discharged to the sewer side without providing an overflow drainage port in the tank body. The drainage device of Patent Document 1 includes a pressure valve that opens when the pressure inside the tank exceeds a set value and discharges the hot water in the tank to the sewage side.
The pressure valve is opened by the water pressure applied when the water level in the tank rises above a predetermined level to discharge surplus water, and when the water level drops below a predetermined level, the pressure valve is closed and the water is stored again to the predetermined water level. becomes possible.

Patent application 2017-114769

Here, the desired storage water level of the hot water differs depending on the shape of the tank body, such as shallow type or deep type, and the application for which it is used. Moreover, the desired level of hot water to be stored differs depending on the user who uses the bath body. However, in the above conventional drainage device, since the pressure valve always operates at a constant pressure, hot water is always stored up to a certain water level no matter what kind of tank body it is attached to. could not be stored.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems. It is an object of the present invention to provide a drainage device in which the water level at which water is discharged and the water level at which drainage is started can be set arbitrarily.

The present invention according to claim 1 for solving the above problems is a tank body,
a drain port provided in the tank body for discharging water in the tank body;
A drainage device comprising a valve member that opens and closes the drainage port,
The valve member is
a valve body that watertightly closes the drain port;
a pressure valve that opens when the pressure from the tank body exceeds a set value and discharges the hot water in the tank body to the sewage side;
a pressure adjustment mechanism that arbitrarily sets the pressure at which the pressure valve opens ,
The drainage device is characterized in that the pressure valve comprises a through hole formed in the valve body and a pressure valve main body for opening and closing the through hole.

In the present invention according to claim 2, the pressure valve is
It is closed by magnetic force,
2. The drainage device according to claim 1, wherein the pressure adjustment mechanism arbitrarily sets the pressure at which the pressure valve opens by adjusting the magnetic force.

In the present invention according to claim 3, the pressure valve is
The elasticity of the elastic material closes the mouth,
2. The drainage device according to claim 1, wherein the pressure adjustment mechanism arbitrarily sets the pressure at which the pressure valve opens by adjusting the elasticity of the elastic material.

In the present invention according to claim 4, the pressure valve is
As well as being closed by the weight of the weight,
2. The drainage device according to claim 1, wherein the pressure adjustment mechanism arbitrarily sets the pressure at which the pressure valve opens by adjusting the position of the weight.

In the present invention according to claim 5, the drainage device is
5. The drainage device according to any one of claims 1 to 4, characterized in that the drain port is opened and closed by vertical movement of the valve member accompanying direct or indirect operation of the valve member.

According to the present invention, it is possible to appropriately set the storable water level of hot water by the pressure adjusting mechanism according to the desired height which differs depending on the bath body, application, and user. As a result, there is no need to prepare a valve member having a pressure valve corresponding to each tank body or user, and it is possible to increase the versatility of the member.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows 1st embodiment of this invention. FIG. 4 is a cross-sectional view showing a valve member; 4 is an exploded view showing the configuration of the valve member; FIG. It is sectional drawing which shows the (a) closed state of the pressure valve which raised the water level which can be stored by the pressure adjustment mechanism, and (b) sectional view which shows an open state. It is sectional drawing which shows (a) closed state of a pressure valve (b) sectional drawing which shows the open state which lowered the water level which can be stored by the pressure adjustment mechanism. It is a sectional view showing a second embodiment of the present invention. FIG. 4 is a cross-sectional view showing a valve member; 4 is an exploded view showing the configuration of the valve member; FIG. It is sectional drawing which shows the (a) closed state of the pressure valve which raised the water level which can be stored by the pressure adjustment mechanism, and (b) sectional view which shows an open state. It is sectional drawing which shows (a) closed state of a pressure valve (b) sectional drawing which shows the open state which lowered the water level which can be stored by the pressure adjustment mechanism. In the valve member of the third embodiment of the present invention, (a) a cross-sectional view showing the closed state of the pressure valve, and (b) a cross-sectional view showing the open state, in which the storable water level is raised by the pressure adjustment mechanism. It is sectional drawing which shows (a) closed state of a pressure valve (b) sectional drawing which shows the open state which lowered the water level which can be stored by the pressure adjustment mechanism. In the fourth embodiment of the present invention, (a) sectional view showing the closed state of the pressure valve, (b) sectional view showing the closed state of the pressure valve in which the storable water level is lowered by the pressure adjustment mechanism.

A first embodiment of the present invention will be described below with reference to the drawings. In addition, the description given below is for facilitating understanding of the embodiments, and is not intended to limit the understanding of the invention.

The drainage device according to the first embodiment of the present invention, shown in FIGS.

The washbasin S is composed of a washbowl B as a tank body and a cabinet C having a piping space inside on which the washbowl B is placed.
The washbowl B has a box-like shape with an upper opening, and has a mounting opening for mounting the drain main body 1 on the bottom and a mounting opening for mounting the operation part 31 on the upper edge.

The drain port main body 1 has a substantially cylindrical shape with a drain channel formed therein, and a drain port 2 is formed at the upper end of the drain channel. Further, the drain port main body 1 has a flange projecting outward from the upper end and a male screw below the flange.
After the drain port body 1 is inserted into the mounting port formed on the bottom surface of the washbowl B, it is screwed with a nut arranged on the bottom surface of the washbowl B, and fixed by sandwiching the periphery of the mounting port between the flange and the nut. It is

The intake valve member 3 is arranged below the drain port main body 1, and has an intake hole communicating with the outside and a valve seat portion with which the annular intake valve main body abuts on the outer periphery thereof.
The intake valve main body is placed on the valve seat to block the intake hole when the pressure in the downstream drainage pipe is equal to the atmospheric pressure, and when the pressure in the downstream drainage pipe becomes negative. The negative pressure is increased by the negative pressure, and the suction hole is opened to allow the outside air to flow into the drain pipe, and the suction is performed to eliminate the negative pressure.

As shown in FIGS. 2 and 3, the valve member 5 is composed of a valve body 6 and a pressure valve 7, and a valve shaft 22 is connected. The valve body 6 consists of a substantially disc-shaped upper valve body 8 , a mesh-like lower valve body 11 , and a valve cover 12 covering the upper valve body 8 . A pressure valve body 15 is arranged. The pressure valve 7 is composed of a through hole 9 formed in the valve body upper portion 8 and a pressure valve main body 15 . Also, the valve member 5 has a pressure adjusting mechanism 40 comprising a male thread portion 41 and a female thread portion 42 .

A ring-shaped packing is fitted around the upper portion 8 of the valve body, and by covering the drain port 2, the drain port 2 is watertightly closed. The upper part 8 of the valve body 8 is formed with a through hole 9 extending vertically through its center, and is connected to the valve lid 12 via a support shaft 14 extending upward from the center of the upper surface. A pressure valve main body 15 is disposed below the through hole 9 , and can be opened and closed when the pressure valve main body 15 comes into contact with a valve seat 10 formed on the lower surface of the through hole 9 . A male threaded portion 41 as a pressure adjusting mechanism 40 is formed at the tip of the support shaft 14, and a female threaded portion 42 of the valve lid 12 as the pressure adjusting mechanism 40 is screwed therewith. A locking nut 50 is screwed onto the male screw portion 41, and the screwing position of the valve cover 12 is fixed.
The lower valve body 11 has an upper end connected to the upper valve body 8 and a valve shaft 22 attached to the lower central surface.
The valve lid 12 is a lid member that has approximately the same diameter as the valve body 6 and forms a design surface by covering the valve body 6 and the pressure valve 7. A female screw portion 42 is formed in the center of the lower surface. , and a magnet 17 is embedded therein. The magnet 17 is arranged so as to attract a magnet 18 embedded in the pressure valve main body 15, which will be described later. ing.
The pressure valve main body 15 has a substantially U-shaped cross section and is arranged so as to be vertically movable inside the valve body 6. The pressure valve main body 15 has a water stop portion 16 at its upper end and a magnet 18 embedded therein. A packing made of an elastic member such as rubber is fitted to the water stop portion 16 , and the through hole 9 is watertightly closed by coming into contact with a valve seat 10 formed on the lower surface of the through hole 9 of the valve body 6 .

In the pressure valve 7 consisting of the pressure valve main body 15 and the through hole 9, the pressure valve main body 15 rises due to the magnetic force acting in the attracting direction of the magnets 17 and 18 when the pressure in the drain pipe on the downstream side is equal to the atmospheric pressure. ing. At this time, the pressure valve main body 15 abuts the water stop portion 16 on the valve seat 10 to block the drainage flow path continuing from the through hole 9 . The pressure valve 7 is configured to open when the pressure applied from above to the pressure valve main body 15 exceeds a set value, thereby opening the drain passage.

The valve shaft 22 is a rod-shaped body made of metal, the upper end of which is connected to the lower valve body portion 11 and passes through an opening formed in the center of the perforated plate, and the lower end of the valve shaft 22 serves as a push-up piece of the operating device 30. 33 is placed.

The operation device 30 includes an operation portion 31 , a transmission portion 32 , and a push-up piece 33 . By operating the operation portion 31 arranged at a position spaced apart from the valve member 5 , the valve member 5 is indirectly operated via the transmission portion 32 . It is a remote-controlled drain plug device that moves up and down.
The operation part 31 is installed in a mounting opening formed at a position spaced apart from the valve member 5 at the upper edge of the washbowl B, and can be manually operated by the user by pushing and pulling.
The transmission part 32 is a release wire composed of an outer tube made of resin and an inner wire made of metal arranged in the outer tube. One end of the inner wire is connected to the operation part 31 and the other end is connected to the push-up piece 33 . and communicate.
The push-up piece 33 is configured to rotate according to the sliding of the inner wire, and the valve member 5 is placed thereon.

In the operation device 30, when the operating portion 31 is lifted while the valve member 5 is lowered, the inner wire slides toward the operating portion 31 and the push-up piece 33 is directed upward. to rotate. At this time, the valve member 5 rises with the rotation of the push-up piece 33 to open the drain port 2 . On the other hand, when the operation portion 31 is pushed down from the open state of the drain port 2, the inner wire slides toward the push-up piece 33, and the push-up piece 33 rotates downward to open the valve. The member 5 descends to close the drain port 2.

With respect to the washbowl B in which the valve member 5 is installed, the magnet 17 and the magnet Since the magnetic force acting in the direction in which the valves 18 are attracted is stronger than the water pressure applied to the pressure valve main body 15, the pressure valve main body 15 is raised by the magnetic force and is stopped on the valve seat 10, as shown in FIG. 4(a). The water portion 16 abuts and maintains the closed state. Therefore, the user can store hot water up to a predetermined water level.
Here, when hot water above a predetermined water level is stored in the washbowl B, the pressure valve 7 is opened when the pressure applied from the bath body exceeds a set value. That is, since the water pressure applied to the pressure valve main body 15 due to the accumulation of hot water exceeds the biasing force of the magnetic force acting in the direction in which the magnets 17 and 18 attract each other, the pressure valve main body 15 is pushed down against the magnetic force. At this time, as shown in FIG. 4(b), the water stop portion 16 is separated from the valve seat 10, and surplus water in the washbowl B is discharged from the through hole 9. As shown in FIG. The discharged surplus water passes through the mesh portion of the valve body lower portion 11 and is discharged to the sewage side.
As the water level in the washbowl B drops as the water is discharged, the water pressure applied to the pressure valve main body 15 gradually drops. When the magnetic force acting in the attracting direction of the magnets 17 and 18 exceeds the water pressure, the pressure valve main body 15 rises again. At this time, the pressure valve 7 is closed by the contact of the water stop portion 16 with the valve seat 10, so that hot water can be stored again.

The drainage device is provided with a pressure adjusting mechanism 40 consisting of a male screw portion 41 and a female screw portion 42. By arbitrarily setting the value of the pressure at which the pressure valve 7 opens as follows, water is stored in the tank body. Possible water level can be set.
First, when raising the storable water level, the male screw portion 41 and the female screw portion 42 are tightened as shown in FIG. As described above, the magnet 17 is arranged on the valve cover 12 and the magnet 18 is arranged on the pressure valve main body 15, so that the magnets are brought close to each other by tightening the male screw portion 41 and the female screw portion 42. As shown in FIG. Here, since the magnetic force is inversely proportional to the square of the distance between the magnets, when the magnets 17 and 18 approach each other due to screwing, the magnetic force is strengthened and the pressure valve main body 15 strongly contacts the valve seat 10 . Therefore, the pressure valve main body 15 is separated from the valve seat 10, and the pressure required to open the through hole 9 increases, so that the water level that can be stored in the washbowl B rises.
Next, when lowering the storable water level, the male screw portion 41 and the female screw portion 42 are loosened as shown in FIG. At this time, since the magnets are separated from each other, the magnetic force acting between the magnets is weakened, and the force with which the pressure valve main body 15 contacts the valve seat 10 is reduced. Therefore, the pressure valve main body 15 is separated from the valve seat 10, and the pressure required to open the through hole 9 is reduced, so that the water level that can be stored in the washbowl B is lowered.
After adjusting the relative positions of the valve body 6 and the valve cover 12, the locking nut 50 is tightened to fix the height position of the valve cover 12, thereby preventing fluctuations in the level of hot water that can be stored. .

As described above, in the drainage device of the present invention, the distance between the magnets is displaced by the pressure adjustment mechanism 40, and the magnetic force is adjusted, so that hot water and water are appropriately adjusted according to the desired height that differs depending on the tank body, application, and user. It becomes possible to set the storable water level. As a result, there is no need to prepare a valve member having a magnet that corresponds to each tank body or user, and it is possible to increase the versatility of the member.
When hot water above a predetermined water level is stored in the washbowl B and the surplus water is discharged, if the inside of the drain pipe is filled with water, a strong negative pressure is generated in the drain pipe due to the siphon phenomenon, and the inside of the washbowl B is discharged. Hot water is drawn downstream. At this time, since the pressure valve main body 15 is drawn downward by the negative pressure, there is a possibility that the pressure valve main body 15 cannot rise even if the water level in the washbowl B falls below a predetermined level. However, in the present invention, the intake valve member 3 is provided, and when negative pressure is generated, the intake valve main body disposed inside the intake valve member 3 rises and sucks air through the intake hole to eliminate the negative pressure and increase the water level. can be maintained at a predetermined height.
In the above-described first embodiment, the pressure valve 7 is closed by the magnetic force acting in the direction in which the magnets 17 and 18 attract each other. That is, since the magnetic force is inversely proportional to the square of the distance between the magnets as described above, once the magnets 17 and 18 are separated from each other, the attractive force due to the magnetic force is abruptly attenuated. be able to. As a result, it is possible to reliably prevent surplus water from overflowing from the tank body due to insufficient flow rate.

Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 10. FIG. It should be noted that only the valve member 5 is different from the first embodiment, and the washstand S, the washbowl B, the cabinet C, the drain main body 1, the intake valve member 3, and the operation device 30 are different from the first embodiment. , the same reference numerals as in the first embodiment are given and the description thereof is omitted.

As shown in FIGS. 7 and 8, the valve member 5 is composed of a valve body 6 and a pressure valve 7, and a valve shaft 22 is connected. The valve body 6 consists of a substantially disc-shaped upper valve body 8 , a mesh-like lower valve body 11 , and a valve cover 12 covering the upper valve body 8 . A pressure valve main body 15 and a spring 19 as an elastic member are arranged. The pressure valve 7 comprises a through hole 9 formed in the upper portion 8 of the valve body, a pressure valve main body 15 and a spring 19 .

A ring-shaped packing is fitted around the upper portion 8 of the valve body, and by covering the drain port 2, the drain port 2 is watertightly closed. A through hole 9 is formed vertically through the center of the valve body upper portion 8 . A pressure valve main body 15 is disposed below the through hole 9 , and can be opened and closed by contacting the pressure valve main body 15 with an inner collar-shaped valve seat 10 formed at the upper end of the through hole 9 . A male threaded portion 41 as a pressure regulating mechanism 40 is formed on the outer periphery of the lower end of the upper valve body 8, and a female threaded portion 42 of the lower valve body 11 as the pressure regulating mechanism 40 is screwed therewith. A locking nut 50 is screwed onto the upper end of the male screw portion 41, and the screwing position of the lower portion 11 of the valve body is fixed.
The lower valve body 11 is connected to the upper valve body 8 by screwing a female screw portion 42 as a pressure regulating mechanism 40 formed at the upper end with a male screw portion 41, and a valve shaft 22 is formed on the central lower surface. installed.
The valve lid 12 is a lid member that has approximately the same diameter as the valve body 6 and forms a design surface by covering the valve body 6 and the pressure valve 7. A plurality of valve lids 12 extend downward on the outer periphery of the lower surface. It is connected with the valve body 6 by the strut 13 .
The pressure valve main body 15 is arranged so as to be vertically movable inside the valve body 6, has a water stop portion 16 at its upper end, and is in contact with a spring 19 at its lower surface. energized. A packing made of an elastic member such as rubber is fitted to the water stop portion 16 , and the through hole 9 is watertightly closed by coming into contact with a valve seat 10 formed on the lower surface of the through hole 9 of the valve body 6 .

The pressure valve 7 consisting of the pressure valve main body 15 and the through hole 9 rises due to the elasticity of the spring 19 when the pressure in the drain pipe on the downstream side is equal to the atmospheric pressure. At this time, the pressure valve main body 15 abuts the water stop portion 16 on the valve seat 10 to block the drainage flow path continuing from the through hole 9 . The pressure valve 7 is configured to open when the pressure applied from above to the pressure valve main body 15 exceeds a set value, thereby opening the drain passage.

The valve shaft 22 is a rod-shaped body made of metal, the upper end of which is connected to the lower valve body portion 11 and passes through an opening formed in the center of the perforated plate. 33 is placed.

In a state in which the valve member 5 descends to close the drain port 2 of the washbowl B in which the valve member 5 is installed, when hot water below a predetermined water level is stored, the elasticity of the spring 19 is stronger than the water pressure applied to the pressure valve main body 15, the pressure valve main body 15 rises due to its elasticity as shown in FIG. It remains closed.
Here, when hot water above a predetermined water level is stored in the washbowl B, the pressure valve 7 is opened when the pressure applied from the bath body exceeds a set value. That is, since the water pressure applied to the pressure valve main body 15 due to the accumulation of hot water is higher than the bias due to the elasticity of the spring 19 , the pressure valve main body 15 is pushed down against the elasticity of the spring 19 . At this time, as shown in FIG. 9(b), the water stop portion 16 is separated from the valve seat 10, and surplus water in the washbowl B is discharged from the through hole 9. As shown in FIG. The discharged surplus water passes through the mesh portion of the valve body lower portion 11 and is discharged to the sewage side.
As the water level in the washbowl B drops as the water is discharged, the water pressure applied to the pressure valve main body 15 gradually drops. When the elasticity of the spring 19 exceeds the water pressure, the pressure valve main body 15 rises again. At this time, the pressure valve 7 is closed by the contact of the water stop portion 16 with the valve seat 10, so that hot water can be stored again.

The drainage device is provided with a pressure adjusting mechanism 40 consisting of a male screw portion 41 and a female screw portion 42. By arbitrarily setting the value of the pressure at which the pressure valve 7 opens as follows, water is stored in the tank body. Possible water level can be set.
First, when raising the storable water level, the male screw portion 41 and the female screw portion 42 are tightened as shown in FIG. As described above, since the pressure valve main body 15 and the spring 19, which is an elastic member, are arranged between the upper valve body 8 and the lower valve body 11, the spring 19 is activated by tightening the male screw portion 41 and the female screw portion 42. Compressed. As a result, the elastic force of the spring 19 is strengthened, and the pressure valve main body 15 strongly abuts the valve seat 10 . Therefore, the pressure valve main body 15 is separated from the valve seat 10, and the pressure required to open the through hole 9 increases, so that the water level that can be stored in the washbowl B rises.
Next, when lowering the storable water level, as shown in FIG. 10, the male screw portion 41 and the female screw portion 42 are loosened. At this time, the expansion of the spring 19 weakens the elastic bias of the spring 19, and the stress with which the pressure valve main body 15 is pressed against the valve seat 10 is reduced. Therefore, the pressure valve main body 15 is separated from the valve seat 10, and the pressure required to open the through hole 9 is reduced, so that the water level that can be stored in the washbowl B is lowered.
After adjusting the relative positions of the upper valve body 8 and the lower valve body 11, by tightening the locking nut 50, the height position of the lower valve body 11 is fixed, and the water level that can be stored fluctuates. can be prevented.

As described above, in the drainage device of the present invention, the elasticity of the spring 19, which is an elastic member, is adjusted by the pressure adjustment mechanism 40, so that hot water can be appropriately stored according to the desired height that differs depending on the tank body, application, and user. It is possible to set the possible water level. As a result, there is no need to prepare a valve member having an elastic member corresponding to each tank body or user, and it is possible to increase the versatility of the member.
When hot water above a predetermined water level is stored in the washbowl B and the surplus water is discharged, if the inside of the drain pipe is filled with water, a strong negative pressure is generated in the drain pipe due to the siphon phenomenon, and the inside of the washbowl B is discharged. Hot water is drawn downstream. At this time, since the pressure valve main body 15 is drawn downward by the negative pressure, there is a possibility that the pressure valve main body 15 cannot rise even if the water level in the washbowl B falls below a predetermined level. However, in the present invention, the intake valve member 3 is provided, and when negative pressure is generated, the intake valve main body disposed inside the intake valve member 3 rises and sucks air through the intake hole to eliminate the negative pressure and increase the water level. can be maintained at a predetermined height.

The second embodiment of the present invention has been described above, but the present invention is not limited to the shapes of the first and second embodiments, and can be freely modified without departing from the gist of the invention. . For example, like the valve member 5 described in the third embodiment shown in FIGS. In the third embodiment, the pressure valve main body 15 is rotatable around a fulcrum, and a weight 44 is attached to the side facing the water stop portion 16 . The weight 44 is formed with a feed screw 43 as the pressure adjusting mechanism 40, and its position can be adjusted by rotating the weight. Therefore, as shown in FIG. 11, it is possible to raise the storable water level by moving the weight 44 toward the end of the pressure valve main body 15. Conversely, as shown in FIG. By moving it to the side, it becomes possible to lower the storable water level.

Further, the pressure adjusting mechanism 40 is not limited to screwing. For example, like the pressure regulating mechanism 40 of the fourth embodiment shown in FIG. The opening pressure of the pressure valve may be arbitrarily set depending on the position of the recess 45 with which the is engaged.

Although the embodiments of the present invention have been described above, various design changes may be made without departing from the scope of the invention.
For example, as a structure for operating the pressure valve, air pressure or hydraulic pressure may be used in addition to the pressure valves described in the above embodiments.
Further, in the first embodiment, the magnets 18 and 17 are provided on the valve body 6 and the valve cover 12, respectively, but the magnets may be arranged only on one side and the metal material may be arranged on the other side. Alternatively, the structure may be such that the pressure valve closes by utilizing the force of mutual repulsion between the magnets.
Further, the pressure adjusting mechanism is not limited to the screwing mechanism described in the first to third embodiments or the engagement mechanism described in the fourth embodiment. For example, for pressure valves that operate by magnetic force as in the first embodiment, a method of adjusting the distance between magnets using a step or taper may be adopted, or other methods such as friction or caulking may be adopted. Also good.
In addition, the operation device has an operation portion provided at a position spaced apart from the valve member, and in addition to the remote-operated drain plug device that moves the valve member up and down by indirect operation from the operation portion, a lifted state inside the valve member is also provided. The valve member may be moved up and down by directly pushing the valve cover or the valve body, and the valve member may be held alternately between the raised state and the lowered state.

1 Drain port body 2 Drain port 3 Intake valve member 5 Valve member 6 Valve body 7 Pressure valve 8 Valve body upper part 9 Through hole 10 Valve seat 11 Valve body lower part 12 Valve cover 13 Strut 14 Support shaft 15 Pressure valve body 16 Water stop part 17 Magnet 18 Magnet 19 Spring 22 Valve stem 30 Operating device 31 Operating part 32 Transmission part 33 Push-up piece 40 Pressure adjusting mechanism 41 Male screw part 42 Female screw part 43 Feed screw 44 Weight 45 Concave part 46 Convex part 50 Locking nut S Washstand B Washbowl C Cabinet

Claims (5)

a tank body;
a drain port provided in the tank body for discharging water in the tank body;
A drainage device comprising a valve member that opens and closes the drainage port,
The valve member is
a valve body that watertightly closes the drain port;
a pressure valve that opens when the pressure from the tank body exceeds a set value and discharges the hot water in the tank body to the sewage side;
a pressure adjustment mechanism that arbitrarily sets the pressure at which the pressure valve opens ,
A drainage device , wherein the pressure valve comprises a through hole formed in the valve body and a pressure valve main body for opening and closing the through hole. The pressure valve is
It is closed by magnetic force,
2. The drainage device according to claim 1, wherein the pressure adjustment mechanism arbitrarily sets the pressure at which the pressure valve opens by adjusting the magnetic force. The pressure valve is
The elasticity of the elastic material closes the mouth,
2. The drainage device according to claim 1, wherein the pressure adjustment mechanism arbitrarily sets the pressure at which the pressure valve opens by adjusting the elasticity of the elastic material. The pressure valve is
As well as being closed by the weight of the weight,
2. The drainage device according to claim 1, wherein the pressure adjustment mechanism arbitrarily sets the pressure at which the pressure valve opens by adjusting the position of the weight. The drainage device
5. The drainage device according to claim 1 , wherein the drainage port is opened and closed by vertical movement of the valve member accompanying direct or indirect operation of the valve member.

Images