JP2010112121A - Remote-control drain valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote-control drain valve device to be used for a kitchen sink with a valve openable and clossable with light operation, and a release wire having no buckle nor fail, which can be operated easily for even elderly people, children, or people with handicapped hands even when pressure is applied. <P>SOLUTION: The remote-control drain valve device is composed of: a tank 1 with a drain outlet 2 open at the bottom; a valve 3 which is placed inside the drain outlet 2 and opens and closes the drain outlet 2; a shaft 5 which droops from the lower surface of the valve 3; an operating section 6 for remotely operating opening and closing of the valve 3; and a release wire 7 which is connected with the valve 3 and the operating section 6. A pressure reducing valve 4 with smaller opening than the valve 3 is constituted in the valve 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a remote-operated drain plug device that can remotely control opening and closing of a drain outlet such as a tank body.

There is a well-known remote-operated drain plug device as shown in FIG. Hereinafter, a conventional example of the water stop valve illustrated in FIG. 5 will be described with reference to the drawings.
The remote-operated drain plug device of the conventional example illustrated in FIG. 5 includes a tank body, a drain port, a valve body, a collection unit, an operation unit, a holding mechanism unit, a watertight member, described below, It is comprised from a release wire and a drainage member.
The tank body is a box body for storing / draining water therein, and in this conventional example, a wash bowl provided on a wash basin is adopted.
The drain port is a hole opened in the bottom surface of the wash bowl, and is an opening for draining water stored in the wash bowl into sewage.
The drain plug is a cylindrical body having a flange installed at the drain port, and has a drain member at the lower end.
The valve body is a member that is arranged on the drain plug so as to be movable up and down, and opens / closes the drain port. When seated on the drain port, the valve body closes the drain port and stops water. When the drain outlet is opened, the water in the wash bowl is drained into sewage. A valve shaft is configured to hang down on the back surface of the valve body.
The collecting part is a member that collects waste dust and hair in the drainage, and is configured to be slidable on the valve shaft in this conventional example.
The operation portion is a member that is attached and fixed to an appropriate location of the wash bowl, and remotely operates opening and closing of the valve body.
The holding mechanism portion is a mechanism portion having a support shaft that holds the valve body up and down. In this conventional example, a thrust lock mechanism that is well-known for the advancement and retraction of the core of the ballpoint pen is adopted. Further, the holding mechanism portion is configured immediately below the valve body, and the valve body is raised / lowered by the operation of the support shaft. In this conventional example, the holding member is arranged / configured outside the drainage member.
The water-tight member is a member that separates the holding mechanism portion from the drain pipe in a water-tight manner, and is a bellows-like water-tight packing configured to be crowned on the support shaft of the holding member. Since the watertight member has a bellows shape, the bellows advance and retreat as the support shaft moves up and down, so that the operation of the support shaft can be smoothly performed.
The release wire is composed of an inner wire that is connected to the support shaft of the holding mechanism portion and the operation portion, and the metal wire is formed in a coil shape, and a resin outer tube that accommodates the inner wire so as to be able to advance and retract. Become.
The drainage member is a tubular member that connects from the lower end of the drainage plug to the sewage pipe, and a drainage trap with sealed water that prevents backflow of pests and odors from the sewage to the indoor side is interposed in the middle position. Composed.

The remote-operated drain plug device thus constructed operates as follows.
First, an operation is applied to the operation unit so that the valve body is lowered and the drain plug is closed. When the operating portion is pushed from this state, the inner wire of the release wire advances in the outer tube and pushes up the support shaft of the holding mechanism portion. Then, as the support shaft rises, the valve shaft is pushed up through the watertight member, the valve body rises and opens the drain plug. The inner wire returns to the original position by the force of the return spring. And the raise of a support shaft is hold | maintained by the holding function of a holding mechanism part, and the raise of a valve body is hold | maintained as a result. In this state, the drainage in the tank is drained from the drain plug to the drainage member. When the operation unit is further pushed, the inner wire of the release wire advances again in the outer tube and pushes up the support shaft of the holding mechanism unit again. Then, the holding mechanism is released and the support shaft is lowered by its own weight. Then, the valve body pushed up by the support shaft is also lowered by its own weight through the watertight member. In this state, since the valve body is seated on the drain plug, the drain plug is closed, so that the drainage can be stored in the tank.
Thereafter, by repeating this operation, drainage in the tank can be stored / drained by remote operation of the operation unit.

The remote-operated drain plug device of this conventional example has the following drainage flow.
When the valve rises from the drain plug, the drainage is drained to the drain plug side. The drainage in the drain plug is drained to a drainage member, and finally drained to a sewer pipe through a drain trap. Also, odors and pests from the sewage will not flow back into the room by the drain trap.

Another conventional example is a water stop valve.
For example, this conventional remote-operated drain plug device is shown in FIG. Hereinafter, a conventional example of the remote control type drain plug device shown in FIG. 5 will be described with reference to the drawings.
The water stop valve of the conventional example illustrated in FIG. 6 includes a tank body, a drain port, a drain plug, a valve body, a pressure reducing valve, a core body, a ball chain, and a drain pipe described below. Consists of.
The tank body is a box body for storing / draining water therein, and in this conventional example, a wash bowl provided on a wash basin is adopted.
The drain port is a hole opened in the bottom surface of the wash bowl, and is an opening for draining water stored in the wash bowl into sewage.
The drain plug is a cylinder having a flange installed at the drain port.
The valve body is a member that is provided in the drain plug and opens / closes the drain port to store / drain the drainage in the tank. Further, an opening is formed in the central part of the valve body so as to communicate with the lower end.
The pressure reducing valve is arranged at the opening of the valve body. Below the pressure reducing valve, a cylindrical portion that hangs downward and a retaining portion configured at the lower end of the cylindrical portion are configured. The pressure reducing valve is connected by a core body to be described later so as to be interlocked with the valve body.
The core body is a disk-shaped member and is configured to be inserted into the opening of the valve body. In addition, a plurality of holes for water passage are opened in the core body, and further, a hole through which the cylindrical portion of the pressure reducing valve is slidably inserted is also opened.
The ball chain is a member configured so that a user can remove the valve body without touching it directly, and is a spherical chain. Note that one end of the ball chain is connected to a pressure reducing valve, and the other end is connected to the inner surface of the tank body.
The drain pipe is a pipe connected to the downstream of the drain outlet, and finally to the sewer pipe through a drain trap equipped with a sealed water that prevents pests and odors from the sewage from entering the room. Connected.

The water stop valve operates as follows.
An explanation will be given from the state in which the valve body is mounted in the drain plug. In this state, since the drain port is closed by the valve body, water can be stored in the wash bowl that is the tank body. When the ball chain is pulled from this state, the pressure reducing valve to which the ball chain is connected is removed from the opening of the valve body. Then, the cylinder part of the pressure reducing valve is slidably arranged in the hole of the core body, and the retaining part at the lower end of the cylinder part is locked in the hole of the core body. If it does so, a valve body will open small area by the height of the cylinder part of a pressure-reduction valve, and waste_water | drain will be drained from the opening part of a valve body. If it does so, the waste_water | drain in a tank will be drained from the hole of a core to the drainage member side. When the ball chain is further pulled, the retaining portion of the cylindrical portion is locked to the hole of the core body, and the valve body can be smoothly removed from the drain plug in conjunction with the locking. By setting it as such a structure, the pressure reducing valve to which a water pressure is previously applied smaller than a valve body can be opened with the lighter force which pulls up the whole valve body, and the water pressure added to a valve body reduces. Since the water pressure applied to the valve body is reduced by opening the pressure reducing valve, the valve body can be opened from the drain plug smoothly and easily.

The above water stop valve has the following drainage flow. Drainage in the wash bowl is drained from the drain of the wash bowl through the drain plug, drainage from the drain tap is drained into the drain pipe, and finally to the sewer pipe through the drain trap.

Special No. 3458307 Japanese Utility Model Publication No. 3-45660

The remote-operated drain plug device as in the conventional example has the following problems.
The conventional remote-operated drain plug device as described above is often used for a wash bowl and a bathtub. This is because the kitchen often generates a large amount of garbage such as straw, so the garbage basket must be made larger than the collection part used for the wash bowl and the collection part used for the bathtub. The drain outlet was often larger than the drain outlet of the bathtub or wash bowl. Even if the remote control type drain plug device as described above is used for a kitchen sink where the drain outlet tends to be large in this way, the water pressure applied to the drain outlet is large, and the inner wire of the release wire can withstand the lifting force. I couldn't do it and cramped in the middle. If the inner wire is cramped, the inner wire cannot operate normally. Therefore, the current remote-controlled drain plug device could not be used for a kitchen sink. Even if the inner wire of the release wire does not buckle, there is a lot of water pressure applied to the large drainage port, so the force to push up the inner wire must be increased. If it does so, it is also necessary to push the force which pushes an operation part strongly, In that case, as mentioned above, a handicapped person, an elderly person, and a child cannot use.
Further, the conventional water stop valve structure has the following problems.
Since the conventional water stop valve drainage structure is opened and closed using a ball chain, it has been very difficult for the handicapped, the elderly and children to pull the thin ball chain.
Further, since the ball chain is made of a metal chain, the ball chain may be frequently broken by being corroded by water or by being pulled strongly. Once the ball chain is broken, it is difficult to reconnect it, so the only way to replace the ball chain or use it as it is is very difficult to use. Further, when such a double valve structure is used for a sink such as a kitchen, water pressure is further applied to the water stop valve, and the ball chain is frequently broken.

Accordingly, the remote-operated drain plug device of the present invention has been invented to solve the following problems.
1. It must be a remote-controlled drain plug device used for kitchen sinks.
2. The release wire of the remote-controlled drain plug device should not be bent or broken.
3. The operation part can be operated with a light pressing force.
4). Even if water pressure is applied, it can be easily operated by the elderly, children, and handicapped people.

The present invention described in claim 1 is a tank body 1 having a drain port 2 opened at the bottom, a valve body 3 disposed in the drain port 2 to open and close the drain port 2, and a bottom surface of the valve body 3. In the remote-operated drain plug device comprising a shaft portion 5, an operation portion 6 for remotely opening and closing the valve body 3, and a release wire 7 connected to the valve body 3 and the operation portion 6, the valve A remote-operated drain plug device characterized in that a pressure reducing valve 4 having a smaller opening than that of the valve body 3 is formed in the body 3.

The present invention described in claim 2 is the remote-operated drain plug device according to claim 1, wherein the shaft portion 5 is configured with a step portion 51 for pushing up the pressure reducing valve 4.

According to a third aspect of the present invention, in the outer periphery of the shaft portion 5, the collecting portion 10 that collects dust or the like in drainage is configured to be slidable. The remote-operated drain plug device according to claim 2.

According to a fourth aspect of the present invention, in the remote control type drainage according to any one of the first to third aspects, the collection unit 10 is disposed below the valve body 3. It is a stopper device.

The remote-operated drain plug device of the present invention has the following effects.
In the remote-operated drain plug device according to claim 1, since the pressure reducing valve 4 having a smaller opening than the valve body 3 is formed in the valve body 3, the water pressure applied to the valve body 3 is large because the drain port 2 is large. However, since a small amount of water is drained by opening the pressure reducing valve 4 having a smaller area than the valve body 3, the water pressure applied to the valve body 3 is reduced, so that the valve body 3 is opened by a light lifting force. Can do. Further, since the push-up force is pushed up with a light force, the operation unit 6 can be operated with a light force.
Further, in the remote-operated drain plug device according to claim 2, the step portion 51 that pushes up the pressure reducing valve 4 is formed in the shaft portion 5, so that the step of the shaft portion 5 is pushed up while opening the pressure reducing valve 4. The valve body 3 can be engaged with the portion 51, and the valve body 3 can be pushed up in conjunction with the pressure reducing valve 4 by pushing up the release wire 7 once.
Further, the remote-operated drain plug device according to claim 3 is configured such that a collecting portion 10 that collects dust and the like in the drainage is slidable on the outer periphery of the shaft portion 5. The collecting part 10 can be arranged and configured in the drain port 2 by its own weight without being influenced by the vertical movement of the drainage. Further, the shaft portion 5 can be guided by the collecting portion 10.
Further, in the remote-operated drain plug device according to claim 4, even if the valve body 3 is closed and water is stored in the tank body 1 by arranging the collecting part 10 below the valve body 3. Since the collection part 10 is arranged and configured below the valve body 3, the collected waste water does not float up.

Embodiments of the present invention will be described below with reference to the drawings.
The remote-operated drain plug device of the present embodiment illustrated in FIGS. 1 to 3 includes a tank body 1, a valve body 3, a pressure reducing valve 4, a shaft section 5, a collection section 10, and the like described below. The operation unit 6, the release wire 7, the holding mechanism unit 9, the watertight member 8, and the drainage member H are configured.
In this embodiment, the tank body 1 is a kitchen sink, and is configured by opening a drain outlet 2 at the bottom. In this embodiment, it is a sink, and the drain port 2 is formed by pushing the sink into the sink. A drainage member H described later is connected to the lower end of the drainage port 2.
The valve body 3 includes an opening 32, a step pressing surface 35, a valve packing 31, a countersink part 33, and a shaft guide part 34.
The valve body 3 is a member that moves up and down and closes / opens the drain port 2 to store / drain the drainage generated in the tank body 1. It is a hard member and is formed by coating a metal film from the viewpoint of design. Further, in order to prevent the remaining water of the drainage on the valve body 3, it has an arc shape that gradually descends from the central portion in the sectional view toward the outer peripheral edge.
The opening 32 is a hole that is concentrically opened with the valve body 3 in the central part of the valve body 3 and is an opening in which a pressure reducing valve 4 described later is arranged. The opening 32 has a mortar-shaped opening shape that decreases in diameter as it goes downward.
The step pressing surface 35 is a flat (horizontal) surface formed by stepping around the opening 32 of the valve body 3 so that the pressure reducing valve 4 described later absorbs the thickness of the pressure reducing valve 4 when the valve is closed. ing. In this way, when the pressure reducing valve 4 is arranged and configured on the valve body 3, it is possible to configure an arc shape that gradually descends from the central portion in the sectional view of the valve body 3 toward the outer peripheral edge. It is possible to prevent the remaining water of the drainage on 3.
The valve packing 31 is a water-tight packing arranged on the outer periphery of the valve body 3. When the valve body 3 is lowered and the drain port 2 is closed, the valve packing 31 is seated on the drain port 2 to make the drain port 2 water-tight. Therefore, the waste water can be stored in the tank body 1.
The eye plate 33 is formed in a thin film shape at the opening 32 of the valve body 3, and is a eye plate for collecting drainage debris and soot in the waste water flowing in from the opening 32, and has a hole for water passage. An eye plate constructed by opening.
The shaft guide portion 34 is an opening configured at the center of the eye plate portion 33 of the valve body 3 opening portion 32, and guides a shaft portion 5 described later to the center portion of the valve body 3 slidably.
The pressure reducing valve 4 is a member arranged in the opening 32 at the center of the valve body 3, and has a smaller diameter than the valve body 3 and a circular shape in a top view. This is a member that opens / closes the opening 32 in accordance with the rise / fall of the pressure reducing valve 4. A valve packing 41 that is a watertight member 8 is arranged on the outer periphery, and when the pressure reducing valve 4 is seated on the opening 32, Watertightness is achieved by contacting the mortar-shaped slope of the opening 32. Further, since the lower surface of the pressure reducing valve 4 is disposed on the upper surface of the stepped portion of the valve body 3, the thickness of the pressure reducing valve 4 can be absorbed by the height of the stepped portion. An arc shape that gradually descends toward the outer peripheral edge starting from the central portion can be configured, and the remaining water of the drainage on the valve body 3 can be prevented.
The shaft portion 5 is a member configured to hang from the center of the lower surface of the pressure reducing valve 4, and is located at a midpoint position below the valve body 3 of the shaft portion 5 and above the collection portion 10. A stepped portion 51 is formed. The step portion 51 abuts against the back surface of the shaft guide portion 34 of the valve body 3 when the shaft portion 5 is pushed up, so that the valve body 3 rises in conjunction with the shaft portion 5 being pushed up. be able to.
The collection unit 10 is a mesh-like basket configured to be slidable on the outer periphery of the shaft unit 5, and has a function of collecting trash generated during operation by the user and waste in drainage. Yes. Further, in this embodiment, it is disposed in the drain port 2 below the valve body 3.
The operation unit 6 is attached to the upper edge of the tank body 1, and a release wire 7 is connected to the rear surface of the tank body 1. In addition, the valve body 3 of the drain port 2 can be raised / lowered when the user pushes the operation unit 6.
The release wire 7 has a cylindrical shape, and includes an outer tube 72 made of tetrafluoroethylene and an inner wire 71 made of a metal compression coil disposed in the outer tube 72 so as to freely advance and retract. The release wire 7 is arranged with one end connected to the end of the operation unit 6 and the other end connected to a holding mechanism unit 9 described later.
The holding mechanism unit 9 includes a support shaft 91 that moves up and down in order to push up the valve body 3, and employs a thrust lock mechanism that holds / releases the up / down movement of the support shaft 91. As for the thrust lock mechanism, a thrust lock mechanism for holding a ballpoint pen core in and out is conventionally known and known. In addition, the holding mechanism portion 9 is arranged and configured below the valve body 3 in this embodiment.
The watertight member 8 is a packing made of a bellows-like soft member that separates the holding mechanism 9 and the drainage member H in a watertight manner. The watertight member 8 is configured to be covered with a support shaft 91. When the support shaft 91 moves up, the bellows expands, and when the support shaft 91 descends, the bellows contracts in accordance with the operation of the support shaft 91. . In this embodiment, since the bellows-like packing is used for the watertight member 8, it is possible to cope with the drainage without entering the holding mechanism portion 9 without hindering the operation of the support shaft 91.
The drainage member H is a member connected to the lower end of the drainage port 2 and is finally a pipe connected to the sewer pipe. In the middle of the drainage member H, a drainage trap having sealed water is provided so as to prevent pests and odors from the sewer pipe from flowing into the room. Further, in this embodiment, the flange has a cylindrical shape and protrudes outward at the upper end, the drain plug H1 in which a male screw is screwed on the outer periphery thereof, and the female screw that is screwed with the male screw of the drain plug H1. Is formed into a lock nut R having an L-shape in cross section. The drain plug H1 is configured by bending its lower end in the side surface direction, and connects the lower end side end to the drain pipe. Since the drain plug H1 of the drainage member H is connected to the lower end of the drain port 2 configured to be stepped on the tank body 1 in this manner, the collection unit 10 is arranged and configured in the drain port 2 configured in the tank body 1 can do.

The remote-operated drain plug device configured as described above operates as follows.
First, an operation is applied to the operation unit 6 so that the valve body 3 is lowered and the drain plug is closed as shown in FIG. When the operation unit 6 is pushed from this state, the inner wire 71 of the release wire 7 advances in the outer tube 72 and pushes up the support shaft 91 of the holding mechanism unit 9. Then, the shaft portion 5 is pushed up through the watertight member 8 as the support shaft 91 rises, and the pressure reducing valve 4 attached to the shaft portion 5 is raised as shown in FIG. Ascending from the part 32. At this time, since the outer periphery of the shaft portion 5 is slidably guided by the collecting portion 10 disposed in the drain port 2, the shaft portion 5 can be disposed and fixed without being shaken. . Further, the drainage in the tank body 1 is drained from the opening 32 of the valve body 3 by the opening portion where the pressure reducing valve 4 is raised. Since the pressure reducing valve 4 has a smaller area than the valve body 3, the water pressure is weaker than that of the valve body 3, so that the pressure reducing valve 4 can be pushed up with a lighter force than opening the valve body 3.
Thus, the shaft portion 5 is further pushed up by the support shaft 91, and the stepped portion 51 of the shaft portion 5 comes into contact with the back surface of the shaft guide portion 34 of the valve body 3. The push-up force of the shaft portion 5 is transmitted to the valve body 3 as it is, and the valve body 3 rises as shown in FIG. 3 in conjunction with the pressure reducing valve 4, so that the drain port 2 can be opened. And the raising of the support shaft 91 is held by the holding function of the holding mechanism unit 9, and as a result, the raising of the valve body 3 is held. At this time, the inner wire 71 returns to the original location by the force of the return spring. In this state, the drainage in the tank body 1 is drained from the drainage port 2 to the drainage member H in earnest. When the operation unit 6 is further pushed, the inner wire 71 of the release wire 7 advances again in the outer tube 72 and pushes up the support shaft 91 of the holding mechanism unit 9 again. Then, the holding mechanism unit 9 is released and the support shaft 91 is lowered by its own weight. Then, the valve body 3 and the pressure reducing valve 4 pushed up by the support shaft 91 are also lowered by the own weight through the watertight member 8. In this state, since the pressure reducing valve 4 is seated in the opening 32 of the valve body 3 and the valve body 3 is seated in the drain port 2, the opening 32 and the drain port 2 of the valve body 3 are closed in a watertight manner. The drainage can be stored in the tank body 1.
Thereafter, by repeating this operation, the drainage in the tank body 1 can be stored / drained by remote operation of the operation unit 6.

The remote-operated drain plug device configured as described above has the following drainage flow.
When drainage is stored in the tank body 1, the valve body 3 is seated in the drain outlet 2 and the pressure reducing valve 4 is seated in the opening 32 of the valve body 3 as shown in FIG. When the pressure reducing valve 4 is raised by the operation as shown in FIG. 2, the waste water is discharged from the gap between the pressure reducing valve 4 and the opening 32 of the valve body 3. The drainage drained from the opening 32 is drained from the drainage port 2 to the drainage member H, and finally drained to the sewer pipe through the drainage trap. Moreover, since the opening part 32 of the valve body 3 is configured with the eye plate part 33, dust and soot in the drainage can be collected by the eye plate part 33. Further, since the pressure reducing valve 4 and the shaft portion 5 can be detached from the valve body 3, the eye plate portion 33 can be easily cleaned.
Then, when the pressure reducing valve 4 is lifted as it is, the stepped portion 51 of the shaft portion 5 is brought into contact with the back surface of the shaft guide portion 34 of the valve body 3, and the valve body 3 is also lifted as shown in FIG. At this time, the drainage port 2 is opened as much as the valve body 3 rises, and the wastewater in the tank body 1 is discharged at once. The drainage from the drainage port 2 is drained from the drainage port 2 to the drainage member H, and finally drained to the sewer pipe through the drainage trap. Since the drainage flow is such, even if the drainage is stored in the large tank body 1 and the water pressure applied to the valve body 3 is large, the pressure reducing valve 4 having a smaller area than the valve body 3 is configured. Since the pressure reducing valve 4 is opened before the opening of the body 3, the water pressure applied for a moment when the body 3 is opened can be released, and the valve body 3 can be pushed up with a lighter force. And since the waste in the waste_water | drain in the tank body 1 can be collected by the collection part arrange | positioned under the valve body 3, a waste does not flow out to the sewer side. Further, when the valve body 3 is seated at the drain port 2 and the pressure reducing valve 4 is seated at the opening 32 of the valve body 3, the respective openings are watertightly closed. The drainage can be stored. Moreover, since the collection part 10 is comprised below the valve body 3 at the time of the storage of this waste_water | drain, even if it stores in the tank body 1, the collected garbage will not flow back into the tank body 1. FIG.

The embodiments of the present invention are as described above. However, the present invention is not limited to the above-described embodiments, and can be freely changed without departing from the gist of the invention.
For example, in the above-described embodiment, the configuration of the step portion 51 of the shaft portion 5 is configured to be recessed in the shaft. For example, the step portion 51 may be configured by an O-ring made of a soft member having elasticity. For example, a configuration in which a rib having a convex outer periphery of the shaft portion 5 may be provided. This is because there is no problem if the step portion 51 is in contact with the back surface of the valve body 3 and the shaft portion 5 is pushed up in conjunction with the valve body 3.
Moreover, in the said Example, whenever the operation part 6 is pushed once, the valve body 3 and the pressure-reduction valve 4 are opened, and when the operation part 6 is pushed once more, the valve body 3 and the pressure-reduction valve 4 are closed 1 way. However, it may be a 2-way remote-operated drain plug device that opens / closes the valve body 3 and the pressure reducing valve 4 by pushing and pulling the operation unit 6. .
Moreover, in the said Example, although the pressure-reduction valve 4 is comprised in the planar view center part of the valve body 3, the structure of the pressure-reduction valve 4 is not a thing limited, For example, in the location where the plane view side of the valve body 2 was offset. You may comprise.
Moreover, in the said Example, although the drainage member H is screwed together and connected with the external thread of the drain plug H1 and the internal thread of the lock nut R, as shown in FIG. , A drain port member H2 having a flange formed by screwing a male screw on the outer periphery and projecting outward at the upper end, and a lock nut R having a L-shape in sectional view, having a female screw screwed on the inner periphery. The opening of the drain port member H2 may be used as the drain port 2.

It is sectional drawing which shows the construction state of this invention, and also shows a valve body closed state. It is the elements on larger scale which show the pressure-reduction valve 4 of this invention at the time of an open state. It is a partial expanded sectional view which shows the time of the valve body of this invention in an open state. It is a partial expanded sectional view which shows the other Example of this invention. It is a perspective view which shows the conventional remote control type drain plug device. It is a perspective view which shows the conventional water stop valve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tank body 2 Drain port 3 Valve body 31 Valve packing 32 Opening part 33 Scale part 34 Shaft guide part 35 Step pushing surface 4 Pressure reducing valve 41 Valve packing 5 Shaft part 51 Step part 6 Operation part 7 Release wire 71 Inner wire 72 Outer Tube 8 Watertight member 9 Holding mechanism portion 91 Support shaft 10 Collection portion H Drainage member H1 Drainage plug H2 Drainage port member R Lock nut

Claims (4)

A tank body 1 having a drain opening 2 at the bottom;
A valve body 3 disposed in the drain port 2 to open and close the drain port 2;
A shaft portion 5 depending from the lower surface of the valve body 3,
An operation unit 6 for remotely opening and closing the valve body 3,
A release wire 7 connected to the valve body 3 and the operation unit 6;
In the remote-operated drain plug device composed of
A remote-operated drain plug device comprising a pressure reducing valve 4 having a smaller opening than the valve body 3. The remote-operated drain plug device according to claim 1, wherein a step portion 51 that pushes up the pressure reducing valve 4 is formed on the shaft portion 5. 3. The collecting part 10 for collecting dust or the like in drainage is configured to be slidable on the outer periphery of the shaft part 5 according to any one of claims 1 and 2. Remote-controlled drain plug device. The remote-operated drain plug device according to any one of claims 1 to 3, wherein the collecting unit (10) is disposed below the valve body (3).

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