JP2000087412A - Valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid or gas valve device excellent in sealability and durability. SOLUTION: A valve device has a vertically tilted wall surface 9 within a cavity body 6 and valve carrier 7 with an aperture 12 formed therein is secured to the wall surface 9. The upper surface of the aperture is covered with a plate-shaped valve 17 having rubber elasticity and the valve 17 is secured at its upper end and opened at its lower end to close the aperture by means of the elastic reaction and weight of the valve. The valve is normally held closed and is opened at the application of hydraulic or air pressure from the opposite side of the aperture where the valve is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device which is effective as a trap for drainage attached to a water distribution pipe from a sink in a general household and as an air valve for adjusting air pressure inside and outside.

[0002]

2. Description of the Related Art Conventionally, a drain trap is often provided in the middle of a drain pipe in order to prevent an increase in offensive odor and invasion of pests from a drain pipe of a kitchen, a bath, or the like. A structure disclosed in Japanese Utility Model Publication No. 63-23489, for example, is known as this type of drain trap. This means that the pipe opening formed with an inclination angle of about 45 degrees in the drainage pipe is closed and opened by a split circular valve main part and normally closed by a semicircular weight holding part with a weight attached. It is to maintain the state. The valve body and the weight holding portion are bent in a dogleg shape, and a rotating shaft is formed at the bent portion. In such a structure, at the time of drainage, the pressure of the water causes the valve main body to be pressed against the weight of the weight, the pipe opening is opened, and the drainage flows.

As another structure, Japanese Utility Model Publication No. 60-2577
The structure disclosed in Japanese Patent Publication No. 8 (JP-A) No. 8 is known. In this method, the peripheral wall of a hollow cylindrical tube made of an elastic material is crushed to form a nozzle having a tightly contacted tip. Usually, the nozzle portion is closed, and at the time of drainage, the pressure is expanded by the pressure and the drainage flows down.

Further, in the downstream side of a closed liquid flow pipe, for example, a flow pipe having a structure in which a pipe body is bent in an S-shape and the liquid is retained in the bent portion to shut off the upstream side and the downstream side. In this case, the fluid may entrain the air, and the inside may become a negative pressure, preventing smooth flow. Such a phenomenon may also occur in the gas flow pipe. Further, even when closing a door in a highly sealed space, an air valve may be required to release internal pressure that increases when the door is closed to the outside.

[0005]

[Problems to be Solved by the Invention]
In the structure disclosed in JP-A-23489), since the valve main body is made of a hard material, there is a gap in the contact portion with the pipe port, the sealing property is impaired, and it is impossible to prevent intrusion of bad smell and the like. There is a problem. In addition, the weight and the weight holding portion have to be mechanically bonded because the bonding strength is weak in bonding, and it takes a lot of man-hours to assemble, and since the weight is usually made of metal, it can be used for a long time. There is a problem that rust is generated on the weight. The weight becomes light in a few years due to the generation of rust, the sealing effect is reduced, and in the worst case, there is a possibility that a gap is formed and the deodorizing effect is impaired. In the structure disclosed in the official gazette (Japanese Utility Model Publication No. 60-24778), it is presumed that forming the nozzle tip into a crushed structure and bending it requires a considerably high technique, and the sealing property of the nozzle tip is required to be improved for a long time. There is a problem that it is expected to be difficult to maintain over a long period of time. Generally, this type of valve device is required to have a durability of 10 to 20 years, and it is difficult for the above structure to maintain stable quality during this period.

The present invention has been made in order to solve such a problem, and it is an object of the present invention to provide a liquid and gas valve device which is excellent in sealing performance and maintains stable durability for a long period of time.

[0007]

SUMMARY OF THE INVENTION The present invention provides a cylindrical hollow body, a valve support disposed in the hollow body and having an opening, and fixed to the valve support to close or open the opening. A valve device having a valve made of a rubber-like elastic plate, wherein the valve support has an inclined wall surface inclined to a vertical direction, an opening formed in the inclined wall surface, an upper end of the inclined wall surface, and An upper end face formed between the cavity wall surface and blocking the upstream side and the downstream side, and a lower end surface formed between the lower end of the inclined wall surface and the cavity body wall surface to block the upstream side and the downstream side. Along with the inclined wall surface, the inclination direction is set so that the upper surface of the inclined wall surface is located on the downstream side, and the valve is covered over the entire surface of the opening on the upper surface of the inclined wall surface, and at the upper end of the opening. Fixed Is, it is made is opened at the opening lower end.

In this configuration, when the valve device is used for a liquid pipe, when liquid such as drainage flows into the hollow body from the upstream, the valve is opened by the water pressure, and passes through the opening to the downstream side. leak. After the outflow, the valve closes the opening by its own reaction force and its own weight. In the case of a valve using the above valve device for adjusting the pressure of gas,
When the downstream side has a negative pressure with respect to the upstream side of the hollow body, the valve is opened by the air pressure on the upstream side, air flows to the downstream side, and the air pressure on the upstream side becomes equal to the air pressure on the downstream side.

Further, in the valve device according to the present invention, both the upper end face and the lower end face of the valve support are inclined low in the direction of the inclined wall surface, and are suitable for use in a liquid flow pipe. In such a configuration, the liquid such as drainage smoothly flows on the upper end surface and the lower end surface in the direction of the inclined wall surface,
It will not stay here.

In the valve device according to the present invention, the valve support may include a slit-shaped first narrow opening formed on the upper end surface in contact with the upper surface of the inclined wall surface, and a first narrow opening on the upper end surface. A second slit having a slit shape formed in parallel with the slit and a projection provided on the upper end surface between the first and second narrow openings, wherein the valve covers the opening; A valve body, and a mounting portion provided at an upper portion of the valve body, having a wedge-shaped portion formed at the tip and having a small hole corresponding to the projection,
The mounting portion is penetrated through the upper first and second narrow mouths, the projection is fitted into the small hole, and the wedge-shaped portion is engaged with the second narrow mouth. In such a configuration, the valve is bent between the valve body and the mounting portion, and the elastic reaction force acts to press the upper valve against the opening, and at the same time, a force for closing the opening due to the weight of the valve itself. Works.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case where a valve device is connected to a pipe through which a liquid flows, for example, a water pipe will be described below.
1 and 2, reference numeral 1 denotes a valve device, which is connected between a drain port 2 and a drain pipe 3 of a sink. This connection is made via cylindrical socket portions 4 and 5 provided at the upper and lower ends of the valve device 1. Several different diameters of the open ends of the socket portions 4 and 5 are prepared in accordance with the size of the pipe to be connected. 6 is a cylindrical hollow body forming the outer periphery of the valve device, and 7 is a valve support disposed in the hollow body 5. Although the hollow body 6 has a cylindrical shape, the hollow body 6 may have a rectangular cross section. In this case, there is an advantage that an opening described later can be set large. Note that, even in the case of a square cross section, the upper and lower ends of the sockets 4 and 5 are formed in a circular shape. The socket portions 4 and 5, the hollow body 6, and the valve support 7 are bonded and fixed with an adhesive such as an ABS adhesive.

A plurality of ribs 8, 8,... Having different heights on the left and right in FIG. 2 are formed integrally with the hollow body 6, and the valve support 7 is mounted on the ribs 8, 8,. Is fixed.
As shown in FIGS. 3 to 5, the valve support 7 has a rectangular inclined wall 9 located substantially at the center and inclined with respect to the vertical direction, and an upper end of the inclined wall 9 and a wall of the hollow body 6. Upper end face 10 formed between the upstream side and the downstream side to shut off
And a lower end surface 11 formed between the lower end of the inclined wall surface 9 and the wall surface of the hollow body 6 to block the upstream side and the downstream side. The inclined wall surface 9 is inclined (inclination angle θ1) with respect to the vertical direction.
= 13 degrees), and the opening 12 is formed. The inclined wall surface 9 is provided with its inclination direction such that the upper surface (the right side surface in FIG. 1) is located on the downstream side. Reference numeral 25 denotes a support formed at the center of the opening 12, which functions to prevent a valve described later from being bent into the opening 12 and to reinforce the inclined wall surface 9.

The upper end surface 10 is formed in a circular shape along the inner wall surface of the hollow body 1 and is inclined so as to become lower in the direction of the inclined wall surface 9. This inclination angle (relative to the horizontal plane) is θ2
= 13 degrees. Similarly, the lower end surface 11 is also formed in a split circle along the inner wall surface of the hollow body 6,
It is inclined so that it becomes lower in the direction. This inclination angle (relative to the horizontal plane) can be set to θ3 = 5 degrees.

Reference numeral 13 denotes a slit-shaped first narrow opening formed on the upper end surface 10 which is in contact with the upper surface of the inclined wall surface 9 of the valve support 7.
14 is provided on the upper end face 10 at a predetermined distance from the first narrow opening 13,
The second narrow mouth on the slit formed in parallel with this,
The region 15 between the first and second narrow openings 13 and 14 is formed slightly lower (about 1 mm) than the surrounding surface. 16 is the first
And two projections provided in a region 15 between the second narrow openings 13 and 14. Both the hollow body 6 and the valve support 7 are A
It can be formed of BS resin.

In FIG. 1 and FIG. 6, reference numeral 17 denotes a valve on a flat plate formed of a rubber plate having a soft elasticity, and a rectangular valve body 18 having a size capable of completely covering the opening 12; A mounting portion 20 is provided at the upper portion of the valve body 18 and has a wedge-shaped portion 19 at the tip. The mounting portion 20 is provided with two small holes 21 and 21. As a material of the valve 17, NBR having excellent oil resistance and water resistance is suitable, and its thickness is about 1 m.
m and hardness (JISA) 70. In addition to the above-mentioned flat plate shape, the valve may be formed by bending the boundary between the valve body 18 and the mounting portion 20 in advance. The angle must be set to an angle larger than the angle formed by the inclined wall surface 9 and the upper end surface 10 (90 degrees in the above structure). This is because it is necessary to closely contact at least the opening 12 surface. When the valve is bent in advance as described above, the pressing force due to the elastic reaction force of the valve itself is weakened, but deterioration occurring with time at this boundary can be reduced. In this case, the opening 12 is closed by the weight of the valve body 18.

At the time of mounting the valve 17 to the valve support 7, the mounting portion 20 of the valve 17 is pulled through the first narrow opening 13 and further bent to the right by 90 degrees in FIG. 14 and engaged. At the same time, the projections 1 are formed in the small holes 21 and 21.
6, 16 are fitted. Then, the projections 16, 1
A heated jig is pressed against 6 and is crushed so that the valve 17 is securely fixed to the valve support 7. Thus, the valve 17 has an opening 1 at the top of the valve body 18.
2 is fixed to the upper part, and the lower part is an open end.
, And covers the entire surface of the opening 12. The width and length of the valve mounting portion 20 are set substantially equal to the width and length of the first and second narrow openings 13 and 14, so that no gap is formed between them and the sealing function is impaired. Absent.

Thus, the valve body 18 is elastically pressed against the upper surface of the inclined wall surface 9 by the elastic reaction force caused by the upper end bent in the clockwise direction in FIG. I have. At the same time, a force acting on the upper surface (the right side surface in FIG. 1) of the inclined wall surface 9 acts on the valve body 18 by its own weight. Therefore, even if the elastic pressure becomes weak due to the temporal deformation of the valve 17, the opening closing action by its own weight is maintained. In order to maintain the opening closing action of the valve body 18 due to its own weight, the inclined wall surface 9 must be set so that its upper side is inclined slightly to the left from the vertical direction as shown in FIG. Must be installed vertically.

The operation of the valve device 1 having the above structure will be described.
, The valve body 18 is pressed to bend rightward in the figure against the elastic reaction force and its own weight (indicated by a two-dot chain line a in the figure) to open the opening 12. As a result, drainage or the like flows out to the drain pipe 3 below. After the outflow, the valve body 18 returns to its original position by its reaction force and own weight, and closes the opening 12. When the valve body 18 is closed, since the valve body 18 is an elastic body, even if there is a slight change in unevenness or the like on the opening 12 side, the valve body 18 is deformed and adheres along the change. Further, the valve device 1 having the above structure
Also has a function as an air valve. That is, when the downstream side of the valve device 1 has a negative pressure, the valve opens and introduces outside air to make it equal to the outside air pressure. By such an operation, the drainage flows smoothly in the pipe.

When the valve body 18 is bent at its maximum,
1 may reach the position shown by the two-dot chain line b, but at that time, a gap D needs to be provided between the two so that the tip does not hit the rib 8. This is to prevent the tip of the valve body 18 from hitting the rib 8 and being caught on the rib 8 when the valve body 18 is bent, making it impossible to return to the original position. In consideration of this point, the size of the valve body 18 is naturally limited, and therefore, the size of the opening 12 is also limited by the size of the valve body 18. The size of the opening 12 and the inclination angle of the inclined wall surface 9 are set so as to satisfy these conditions.

FIG. 7 shows an example in which the valve device 1 is used as an air valve. For example, the drainage pipe 23 provided with the drainage and the wrap provided by the bent pipe 22 has a sealed structure, and the drainage and the like often entrains air, so that a negative pressure is often generated. It stops flowing. In order to prevent this, it is necessary to allow outside air to flow into the drain pipe 22, and the air valve 1 that can only flow air is required. In the illustrated example, the drain pipe 23
The valve device 1 is fixed to the upper end thereof. With such a structure, when the inside of the drainage pipe 23 has a negative pressure, the valve of the valve device opens due to the negative pressure, the outside air flows into the pipe, and the liquid flows smoothly. Such a gas valve can be used not only as a valve device in a liquid or gas pipe, but also as a pressure relief valve in an enclosed space. That is, when the space is closed by an opening / closing means such as a door in a closed space, the internal pressure may rise, but if the valve device is used, the increased pressure can be released and the door is closed without requiring force. You can do it.

[0021]

Examples of the dimensions of the valve device having the above structure are as follows. The thickness of the hollow body 6 is 3 mm, the inner diameter is 64 mm, the maximum width of the upper end surface in the horizontal direction is 43 mm, and the maximum width of the lower end surface in the horizontal direction is 3 mm.
2 mm, vertical length of inclined wall 9 30 mm, opening 1
2 size, length 22 mm, width 34 mm (including the support).
In such a shape, it was confirmed that both drainage action and valve action were smoothly performed by connecting to a drain pipe (about 30 to 60 mm in diameter) of a sink generally used in ordinary households.

[0022]

According to the present invention (claim 1), since the inclined opening is closed by a valve having a soft rubber elasticity, the valve opens with a small pressing force, and the liquid or gas is quickly released. Is passed through. When the valve is closed, the valve comes into close contact with the periphery of the opening on the inclined wall, so that a complete sealing function can be obtained. That is, even if some irregularities are generated on the inclined wall surface due to deformation or the like, the valve body is deformed and adheres along the inclined wall surface, so that the sealing property is maintained regardless of whether the fluid is a liquid or a gas. Therefore, the deodorizing effect and the prevention of pest invasion can be more complete. In particular, when the liquid is always wet like a pipe through which the liquid flows, a force for bringing the valve body into close contact with the inclined wall surface is exerted by the surface tension of the liquid, and the sealing function is further improved. The durability can be improved by using a rubber plate as the material of the valve, and the service life thereof can be about 20 years or more.

According to the present invention (claim 2), both the upper end surface and the lower end surface are inclined so as to become lower in the direction of the inclined wall surface. And flows smoothly toward the opening without staying on the lower end surface.

According to the present invention (Claim 3), the valve has a mounting portion of the valve with a finger and penetrates the first narrow opening.
Further, the projection is fitted into the small hole at the same time as penetrating through the second narrow opening and engaging with the second narrow opening at the wedge-shaped portion.
Thereafter, the protrusion is heated and softened and crushed, and the valve is firmly fixed to the valve support. Most of these operations can be performed manually, and can be performed easily and in a short time. Further, the boundary between the valve body and the mounting portion of the valve is bent, and the valve body is constantly urged with an elastic force in a direction to close the opening, thereby improving the sealing function.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a valve device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a hollow body.

FIG. 3 is a plan view showing a valve support.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

5 is a front view of the valve support (a view as seen from a direction V in FIG. 4).

FIG. 6 is a plan view showing a valve.

FIG. 7 is a side view showing a case where the valve device is used as an air valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Valve apparatus 2 Drain port 3 Drain pipe 4, 5 socket 6 Cavity body 7 Valve support 8 Rib 9 Inclined wall surface 10 Upper end surface 11 Lower end surface 12 Opening 13 First narrow mouth 14 Second narrow mouth 16 Projection 17 Valve 18 Valve body 19 Wedge Shaped part 20 Mounting part 21 Small hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoichiro Matsuura 1-8 Yokokawa Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Pref. (72) Inventor Hiroshi Onishi 1-8 Yokokawa Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Pref. F-term (reference) 2D061 DD09 3H025 BA21 BB05

Claims (3)

[Claims] A valve comprising a cylindrical hollow body, a valve support disposed in the hollow body and having an opening, and a rubber-like elastic plate fixed to the valve support and closing or opening the opening. A valve device having a valve support, wherein the valve support has an inclined wall inclined with respect to a vertical direction, an opening formed in the inclined wall, and an upper end of the inclined wall and the cavity body wall. An upper end surface formed to block the upstream side and the downstream side, and a lower end surface formed between the lower end of the inclined wall surface and the cavity body wall surface to block the upstream side and the downstream side, and the inclined wall surface is The inclination direction is set so that the upper surface of the inclined wall surface is located on the downstream side, and the valve is covered over the entire surface of the opening on the upper surface of the inclined wall surface, is fixed at the upper end of the opening, and is fixed at the lower end of the opening. Open Valve apparatus comprising been. 2. The valve device for a liquid flow pipe according to claim 1, wherein both the upper end surface and the lower end surface of the valve support are inclined low toward the inclined wall surface. 3. The valve support according to claim 1, wherein the valve support has a slit-shaped first narrow opening formed on the upper end surface in contact with the upper surface of the inclined wall surface, and the first narrow narrow opening formed on the upper end surface. And a slit-shaped second narrow opening formed in parallel with this at a predetermined distance, and a projection provided on the upper end surface between the first and second narrow openings, the valve includes:
A valve body that covers the opening; and a mounting portion provided at an upper portion of the valve body, having a wedge-shaped portion formed at the tip and having a small hole corresponding to the projection, wherein the mounting portion includes the first and second mounting portions. A valve device which is penetrated through two small openings, the projection is fitted into the small hole, and the wedge-shaped portion is engaged with the second small opening.