JP7649656B2 - On-off valve device - Google Patents

Description

The present invention relates to an on-off valve device that has a communication hole in the middle of a pipe section that allows the fluid flowing inside the pipe section to be discharged to the outside of the pipe section, and has an on-off valve that opens and closes this communication hole.

An on-off valve device is known that is provided midway through a pipe section and has an on-off valve that controls the drainage of water flowing through the pipe section (see Patent Document 1).

JP 2003-306960 A

However, the on-off valves of the on-off valve device disclosed in Patent Document 1 are manually operated on-off valves or electronically controlled on-off valves, and therefore have problems in terms of operability and cost.
The present invention provides an opening/closing valve device which has a valve body that opens and closes a communicating hole provided in the middle of a pipe section in response to pressure fluctuations of the fluid flowing through the pipe section, thereby eliminating the need for manual operation or electronically controlled opening and closing operations and achieving low costs.

The on-off valve device according to the present invention comprises a pipe section, a first communication hole provided midway through the pipe section and capable of discharging fluid flowing within the pipe section to the outside of the pipe section, a valve body provided on the outside of the pipe section and closing the first communication hole by its own weight and opening the first communication hole by the pressure of the fluid through the first communication hole, a valve body accommodating chamber capable of accommodating the valve body with the first communication hole closed and with the first communication hole open, and a second communication hole that communicates between the inside of the valve body accommodating chamber and the outside of the valve body accommodating chamber, wherein the pipe section comprises a conduit component portion formed in a circular tube-like cross section, an introduction conduit to the first communication hole formed so as to protrude from an outer circumferential surface of the conduit component portion , and a partition portion formed on the terminal side of the introduction conduit , The hole is formed by a through hole that penetrates the partition portion and has a circular opening edge on the outer surface of the partition portion, and the valve body is a sphere that closes the through hole by partially entering the through hole from the outside of the pipe portion and seating on the circular opening edge, and both ends in the direction along the central axis of the pipeline component are provided with connecting means for connecting a drain pipe, and the direction along the central axis of the valve body accommodating chamber, which is the direction of movement of the valve body, intersects with the direction along the central axis of the pipeline component.This eliminates the need for manual operation or electronically controlled opening and closing operations, reduces costs , and provides an opening and closing valve device in which the reliability of the opening and closing operation of the first communicating hole by the valve body is improved .

1 is a cross-sectional view showing an on-off valve device according to a first embodiment. FIG. 2 is an exploded perspective view showing the on-off valve device according to the first embodiment. 5A to 5C are diagrams illustrating the operation of the on-off valve device according to the first embodiment. FIG. 11 is a cross-sectional view showing an on-off valve device according to a second to fourth embodiment.

EMBODIMENT 1
As shown in Figures 1 and 2, an on-off valve device 1 according to embodiment 1 includes a pipe section 2, a first communication hole 3 provided in the pipe section 2 and serving as an outlet through which fluid such as air or water flowing within the pipe section 2 can be discharged to the outside of the pipe section 2, a valve element 4 provided on the outside of the pipe section 2 and closing the first communication hole 3 by its own weight and opening the first communication hole 3 by the pressure of the fluid through the first communication hole 3, a valve element accommodating chamber 5 capable of accommodating the valve element 4 with the first communication hole 3 in a closed state and with the first communication hole 3 in an open state, and a second communication hole 6 communicating between the inside of the valve element accommodating chamber 5 and the outside of the valve element accommodating chamber 5.

The pipe section 2 includes a pipe line component 20 formed, for example, with a circular cross section, an inlet pipe line 22 to a first communication hole 3 formed to protrude from an outer peripheral surface 21 of the pipe line component 20, and a partition wall section 23 formed on the terminal side of the inlet pipe line 22. The partition wall section 23 includes a first communication hole 3 formed to penetrate the partition wall section 23.

The extension length of the duct configuration portion 20 in the direction along the central axis 25 may be formed to a desired length.
In addition, for example, both ends 26, 26 of the pipe configuration portion 20 in the direction along the central axis 25 may be provided with connection means such as threaded portions for connecting a drainage pipe such as a storm water drainage pipe (not shown).

As shown in FIG. 2, the first communication hole 3 is formed by a through hole that penetrates the partition wall 23, which functions as the tube wall of the tube section 2, and has a circular opening edge 31 on the outer surface side of the partition wall 23.

The valve body 4 is formed of a sphere, part of which enters the through hole that forms the first communication hole 3 from the outside of the tube portion 2 and seats on a circular opening edge 31 to close the through hole.
In other words, the circular opening edge 31 of the through hole on the side where the sphere serving as the valve body 4 comes into contact functions as a valve seat, and the weight of the sphere causes the spherical surface of the sphere to come into contact with the opening edge 31 serving as the valve seat, so that the sphere serving as the valve body 4 functions to close the through hole serving as the first communicating hole 3 from the outside of the pipe section 2.

The valve body accommodating chamber 5 is formed, for example, by connecting an edge 51 of a cylindrical body 50 having one closed end and the other open end to the partition portion 23 serving as the tube wall of the tube portion 2 via a connection mechanism.
The connection mechanism is constituted by, for example, an annular groove portion 24 formed on the outer surface of the partition portion 23 so as to surround the periphery of the opening edge 31 of the first communication hole 3 .

The second communicating hole 6 is composed of an opening 52 formed by a through hole penetrating the peripheral wall of the cylindrical body 50 on the other end opening edge 51 side of the cylindrical body 50, for example, a plurality of openings 52, 52... arranged at predetermined intervals along the circumferential direction of the cylindrical body 50.
The opening 52 is formed by an opening formed so as to extend from the other end opening edge 51 of the cylindrical body 50 toward the one end closing wall 53 side of the cylindrical body 50 .
In other words, when the other end opening edge 51 side of the cylindrical body 50 is inserted into the annular groove portion 24 and the cylindrical body 50 is attached to the partition portion 23, a plurality of openings 52, 52... that open at a predetermined interval along the circumferential direction of the cylindrical body 50 on the other end opening edge 51 side of the cylindrical body 50 (in other words, on the partition portion 23 side of the valve body accommodating chamber 5) form a second communication hole 6 that communicates between the inside of the valve body accommodating chamber 5 and the outside of the valve body accommodating chamber 5.

The inside diameter of the cylinder 50 forming the valve body accommodating chamber 5 is set to be larger than the diameter of the sphere constituting the valve body 4 .
In other words, the sphere constituting the valve body 4 is formed to have a diameter smaller than the inner diameter of the cylinder 50 that defines the valve body accommodating chamber 5 .
In other words, the diameter dimension of the sphere constituting the valve body 4 is set to be smaller than the inner diameter dimension of the cylinder 50, for example, by a few mm, so that the sphere constituting the valve body 4 can move in a direction along the central axis 55 of the cylinder 50 within the cylinder 50.
That is, the inner diameter dimension of the cylinder 50 and the diameter dimension of the valve disc 4 are set so that the maximum outer periphery position of the sphere constituting the valve disc 4 does not contact the inner periphery surface of the cylinder 50 at one time, and when the valve disc 4 moves in a direction along the central axis 55 of the cylinder 50 forming the valve disc accommodating chamber 5, the center of the valve disc 4 moves approximately on the central axis 55 of the cylinder 50 forming the valve disc accommodating chamber 5, so that the valve disc 4 can move smoothly in a direction along the central axis 55 of the cylinder 50 forming the valve disc accommodating chamber 5. That is, the inner wall of the cylinder 50 forming the valve disc accommodating chamber 5 functions as a guide wall when the valve disc 4 moves in a direction away from the valve seat (opening edge 31), or as a guide wall when the valve disc 4 moves to the valve seat (opening edge 31).

That is, the other end opening edge 51 side of the cylinder 50 is fitted into the annular groove portion 24 formed on the outer surface of the partition portion 23 so that the sphere forming the valve body 4 is housed inside the cylinder 50, and the other end opening edge 51 side of the cylinder 50 is fixed to the partition portion 23 using a fixing means such as adhesive or welding, thereby forming the valve body housing chamber 5.

As a result of the above, the valve body 4 can be accommodated in a state that closes the through hole serving as the first communication hole 3, and the valve body 4 can be accommodated in a state that opens the through hole, and a valve body accommodating chamber 5 is formed which is provided with a second communication hole 6 on the partition portion 23 side which is composed of a plurality of openings 52, 52... that connect the inside of the valve body accommodating chamber 5 with the outside of the valve body accommodating chamber 5.
In other words, the valve body accommodating chamber 5 is configured to communicate with the inside of the tube section 2 through the first communication hole 3 and with the outside through the second communication hole 6, so that air and water from the tube section 2 can be discharged to the outside through the first communication hole 3 and the second communication hole 6.

According to the opening/closing valve device 1 of embodiment 1, first, as shown in FIG. 3( a), when the pressure at which the valve body 4 closes the first communication hole 3 is greater than the pressure of the air or water as a fluid flowing through the pipeline 2, the valve body 4 is maintained in a state in which the first communication hole 3 is closed.
Then, as shown in FIG. 3( b ), when the valve body 4 is pressed by the pressure of air or water moving into the valve body accommodating chamber 5 through the conduit configuration portion 20, the inlet conduit 22, and the first communication hole 3, and the first communication hole 3 opens, the air and water flowing inside the pipe portion 2 is discharged to the outside of the valve body accommodating chamber 5 through the first communication hole 3 and the multiple openings 52, 52... that form the second communication hole 6.
Furthermore, as shown in FIG. 3( a ), when the pressure of the air or water moving into the valve body accommodating chamber 5 through the first communication hole 3 becomes small, the valve body 4 falls toward the partition section 23 under its own weight and sits on the opening edge 31 which serves as the valve seat, thereby closing the first communication hole 3 and allowing the air or water to flow through the tube section 2.

In other words, the on-off valve device 1 according to the first embodiment functions such that the valve body 4 accommodated in the valve body accommodation chamber 5 is seated on the opening edge 31 (valve seat) by its own weight to close the first communication hole 3, and the valve body 4 seated on the opening edge 31 (valve seat) is pressed by the pressure of the fluid in the pipe section 2 via the first communication hole 3 to move in a direction away from the opening edge 31 to open the first communication hole 3, so that the fluid flowing in the pipe section 2 is discharged to the outside of the valve body accommodation chamber 5 via the first communication hole 3, the valve body accommodation chamber 5, and the second communication hole 6.

In other words, the on-off valve device 1 according to the first embodiment includes an on-off valve provided midway through the pipe section 2, and when the pressure of the fluid flowing through the pipe section 2 and pressing against the valve body 4 through the first communication hole 3 becomes greater than a predetermined value, i.e., when the condition of the weight of the valve body 4 < fluid pressure is satisfied, the valve body 4 is pressed by the fluid and opens the first communication hole 3, and when the pressure of the fluid flowing through the pipe section 2 and through the first communication hole 3 becomes equal to or less than a predetermined value, i.e., when the condition of the weight of the valve body 4 ≧ fluid pressure is satisfied, the valve body 4 is seated on the opening edge 31 of the first communication hole 3 by its own weight and functions to close the first communication hole 3.

According to the on-off valve device 1 of the first embodiment, as described above, the valve body 4 closes the first communication hole 3 when the pressure of the fluid flowing in the pipeline 2 is less than the pressure at which the valve body 4 closes the first communication hole 3, and opens the first communication hole 3 when the pressure of the fluid flowing in the pipeline 2 is greater than the pressure at which the valve body 4 closes the first communication hole 3. In other words, since the device is provided with an on-off valve that responds to fluid pressure, manual opening and closing operations and control means for controlling the on-off valve are not required. In other words, it has become possible to provide an on-off valve device 1 that does not require manual operation or electronically controlled opening and closing operations and that can be manufactured at low cost.

Furthermore, by forming the first communication hole 3 as a through hole and forming the valve body 4 as a sphere with a portion thereof entering into the through hole and closing the through hole, the opening edge 31 of the through hole can function as a valve seat.
Furthermore, the diameter dimension of the sphere that functions as the valve body 4 is made smaller than the inner diameter dimension of the cylinder 50 that forms the valve body accommodating chamber 5 so that the inner wall of the cylinder 50 that forms the valve body accommodating chamber 5 acts as a guide wall to enable the valve body 4 to move smoothly within the cylinder 50 in the direction along the central axis 55.This makes it possible to obtain an opening/closing valve device 1 in which the reliability of the opening and closing operation of the first communicating hole 3 by the valve body 4 is improved.

In addition, according to the on-off valve device 1 of embodiment 1, even if the water flowing in the pipe section 2 is not full, the air flowing in the pipe section 2 is discharged to the outside through the first communication hole 3, the valve body accommodating chamber 5, and the second communication hole 6, causing the water level in the pipe section 2 to rise, and therefore the amount of wastewater discharged downstream of the pipe section 2 can be increased.

The on-off valve device 1 according to the first embodiment can be used, for example, as follows.
Conventionally, the piping for collecting rainwater from a building crosses the pit of the building and is connected to a manhole on the building site, and the manhole is connected to a main drainage pipe. Therefore, the rainwater from the building is drained into the main drainage pipe through the piping and the manhole.
However, in the past, there was a problem that during heavy rainfall, when the drainage main pipes reached full capacity, the rainwater from buildings had nowhere to be discharged.
One way to deal with this is to connect a relief pipe to the pipes so that rainwater can be drained from the pipes into the pit. However, in this case, if the drain outlet from the relief pipe to the pit is left open at all times, there is a risk of insects or foreign objects entering the relief pipe and pipes through the drain outlet, posing a hygiene problem.
To solve this hygiene problem, it is conceivable to provide an opening and closing mechanism at the drainage outlet from the relief pipe to the pit, thereby preventing insects and foreign objects from entering the relief pipe and piping, but if a manual opening and closing mechanism is used as the opening and closing mechanism, it is troublesome because the person must go into the pit to open and close the mechanism every time there is heavy rain, etc. Also, if a mechanism that uses power such as electricity to control the opening and closing is used as the opening and closing mechanism, there is a problem of high cost.
Therefore, for example, by connecting the on-off valve device 1 of embodiment 1 to the middle of the piping, when the main drainage pipe becomes full, the valve body 4 of the on-off valve device 1 is pressed by the rainwater flowing inside the pipe section 2, opening the first communication hole 3, so that the rainwater is drained into a pit outside the on-off valve device 1.
In other words, the on-off valve device 1 connected midway through the piping functions as an overflow mechanism that can discharge rainwater in the piping into a pit during heavy rain or the like.

EMBODIMENT 2
As shown in FIG. 4, the valve body accommodating chamber 5 may be configured by using a cylinder 50A having one end open as described above, and having a lid 60 that is detachably attached via a detachment means such as a screw connection on the one end opening side of the cylinder 50A.
For example, a threaded portion 56 may be formed on the outer or inner peripheral surface of one end opening side of the cylindrical body 50A, and a threaded portion 66 may be formed on the inner or outer peripheral surface of one end opening side of the lid 60, and the threaded portions 56, 66 may be screwed together to make the lid 60 removable.
In this way, when the valve body accommodating chamber 5 is configured with a removable lid 60 on one end side, it is preferable because by removing the lid 60, it is possible to easily perform tasks such as cleaning the inside of the valve body accommodating chamber 5, replacing the valve body 4, and cleaning the first communicating hole 3.

EMBODIMENT 3
The connection mechanism that connects the other end opening edge 51 side of the cylindrical body 50 of embodiment 1 or the cylindrical body 50A of embodiment 2 that forms the above-mentioned valve body accommodating chamber 5 to the tube portion 2 may be a connection mechanism using a screw connection.
For example, as shown in FIG. 4, the connection mechanism may be a screw connection between a threaded portion 27 formed on the outer peripheral surface of the protruding end side of a circular pipe portion 29 that is provided so as to protrude from the outer peripheral surface 21 of the pipeline component 20 and a threaded portion 57 formed on the inner peripheral surface of the other end opening edge 51 side of the cylindrical body 50A.
In this case, the pipe section 2 is constituted, for example, by a pipe line component 20 that does not have an inlet pipe line 22, and the first communicating hole 3 is constituted by a pipe hole of a circular pipe section 29 that is arranged to protrude from the outer circumferential surface 21 of the pipe line component 20.
In other words, the pipe section 2 may not have the introduction pipe line 22 .
In this way, when the cylindrical body 50 or the cylindrical body 50A and the tube section 2 are configured to be detachable by a connection mechanism using a screw connection, it is preferable because it becomes easy to remove the cylindrical body 50 or the cylindrical body 50A from the tube section 2 to perform operations such as cleaning the valve body accommodating chamber 5, replacing the valve body 4, and cleaning the first communicating hole 3.

EMBODIMENT 4
4, a configuration may be adopted in which a circular opening edge 31 of the first communication hole 3, which functions as a valve seat for the valve body 4, is surrounded by a recess 32. In other words, the opening edge 31 serves as a bottom, and the recess 32 is formed by a concave surface continuing from the opening edge 31 to, for example, the protruding side end face 33 of the above-mentioned circular pipe portion 29, and a part of the sphere serving as the valve body 4 enters the recess 32 and seats on the opening edge 31, thereby closing the first communication hole 3.
In this manner, if the circular opening edge 31 of the first communicating hole 3 is surrounded by a recess 32, a part of the valve body 4 fits into the recess 32, thereby ensuring that the valve body 4 is securely seated on the opening edge 31, which is preferable since it further improves the reliability of the opening and closing operation of the first communicating hole 3 by the valve body 4.

It goes without saying that it would be more preferable if the on-off valve device 1 had all of the configurations of the above-mentioned embodiments 2, 3, and 4, as shown in FIG. 4.

EMBODIMENT 5
For example, the configuration of the other end opening edge 51 side of the above-mentioned cylinder 50 or cylinder 50A is slightly modified to prepare a cylinder (not shown) having threads formed on the outer circumferential surface of the peripheral wall on the other end opening edge side.
The valve device may also have a valve body accommodating chamber formed by screwing the outer peripheral surface of the other end of the cylinder with a through hole (not shown) formed in the partition portion 23 of the tube portion 2 shown in Figures 1 to 3.
In addition, the opening and closing valve device may have a valve body accommodating chamber formed by screwing together the outer peripheral surface of the other end side of the cylinder and a through hole (not shown) formed in a pipe wall of a pipe line component part formed in a cross-sectionally circular pipe shape constituting the pipe section.
That is, in these cases, a threaded portion (female threaded portion) is formed on the peripheral surface of the through hole that penetrates the partition wall portion 23 of the pipe section 2 or the pipe wall of the pipe line component that constitutes the pipe section, and a threaded portion (male threaded portion) formed on the outer peripheral surface of the peripheral wall on the other end side of the above-mentioned cylindrical body is coupled to this threaded portion to form an opening/closing valve device in which a valve body accommodating chamber is formed.
In the case of embodiment 5, the other end side of the cylinder that constitutes the valve body accommodating chamber is configured to be detachably attached to the pipe section, and the water and air flowing within the pipe section can be discharged to the outside of the valve body accommodating chamber via a first communication hole formed by the other end opening of the cylinder, the valve body accommodating chamber formed by the cylinder, and a second communication hole formed in the peripheral wall of the other end side of the cylinder, resulting in an opening/closing valve device.

The on-off valve device of the present invention may be made of metal, synthetic resin, or other materials, but when durability and other factors are taken into consideration, it is preferable to make it from metal.

Furthermore, the shape and number of the through holes constituting the first communication hole 3 and the second communication hole 6 are not particularly limited.

The valve body 4 may have a weight and shape that allows it to close the first communication hole 3 under its own weight, and to open the first communication hole 3 when pressed by the pressure of the fluid in the tube section 2 through the first communication hole 3.

The cylinder that forms the valve body accommodating chamber 5 is not limited to a cylindrical body, but may be any cylinder that is closed at one end and open at the other end, and may be, for example, a triangular, square, polygonal, or other angular cylinder, or may have a complex cross-sectional shape. In this case, a valve body 4 formed with a peripheral shape that corresponds to the cross-sectional shape of the cylinder that forms the valve body accommodating chamber 5 may be used.

1 Opening and closing valve device, 2 Pipe portion, 3 First communication hole, 4 Valve body, 5 Valve body accommodating chamber,
6 Second communication hole, 31 Circular opening edge.

Claims (1)

A pipe portion,
a first communication hole provided in the pipe portion and capable of discharging fluid flowing through the pipe portion to the outside of the pipe portion;
a valve body provided outside the pipe portion and configured to close the first communication hole by its own weight and to open the first communication hole by the pressure of the fluid passing through the first communication hole;
a valve body accommodating chamber capable of accommodating the valve body in a state in which the first communication hole is closed and a state in which the first communication hole is open;
a second communication hole that communicates between the inside of the valve body accommodating chamber and the outside of the valve body accommodating chamber;
Equipped with
the pipe portion includes a pipe configuration portion formed to have a circular pipe shape in cross section, an introduction pipe to the first communication hole formed so as to protrude from an outer circumferential surface of the pipe configuration portion , and a partition portion formed on a terminal end side of the introduction pipe ,
the first communication hole is formed by a through hole that penetrates the partition wall and has an opening edge on an outer surface side of the partition wall that is formed in a circular shape,
The valve body is a sphere that partially enters the through hole from the outside of the tube portion and seats on the circular opening edge to close the through hole,
The pipe configuration part is provided at both ends in a direction along the central axis thereof with connection means for connecting a drain pipe,
An opening/closing valve device, characterized in that a direction along a central axis of a valve element accommodating chamber, which is a moving direction of a valve element, intersects with a direction along a central axis of a pipeline component .

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