JPH0725062U - Lid with intake valve for drainage facilities such as buildings and structures - Google Patents

Abstract

(57) [Summary] [Purpose] Buildings such as houses to connect to public sewage,
Regarding the lid with the intake valve for closing the upper opening of the box attached to the branch part of the drainage pipe installed as the drainage facility of the structure, when it is attached to the opening of the box made of vinyl chloride resin of relatively small diameter In addition, even if the inside of the pipe is in a negative pressure state, the flow of fluid does not decrease, the flow velocity can be kept constant, abnormal noise is not generated in the pipe, and odor is generated. It is an object of the present invention to provide a lid with an intake valve that does not have a valve. [Structure] A lid for closing an upper surface opening of a masu 12 attached to a connecting portion of a drainage pipe 11 arranged as a drainage facility for buildings, structures, etc., and an intake hole 4 for sucking outside air. Is provided in the lid main body 1, and the inside of the drainage pipe 11 is closed under positive pressure, the intake hole 4 is closed, and when the inside of the drainage pipe 11 is under negative pressure, the intake hole 4 is opened. The stop valve 5 is attached to the back side of the lid body 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to a lid with an intake valve in drainage facilities of buildings and structures, and more specifically, to a branch portion of a drain pipe arranged as drainage facilities of buildings and structures such as houses for connecting to public sewage. The present invention relates to a lid with an intake valve for closing the upper opening of a box.

[0002]

[Prior art]

 Generally, as a drainage facility for buildings and structures such as houses, a drainage pipe is arranged to connect to public sewage, and a joint-shaped connector called a masu is attached to the connection part of the drainage pipe. There is.

Conventionally, a relatively large one made of concrete has been used as such a cell, but in recent years, it has been made of a vinyl chloride resin having a relatively small diameter from the viewpoint of convenience of handling and maintenance of confidentiality. Things are becoming popular.

[0004]

[Problems to be solved by the device]

 By the way, the above-mentioned measure has a shape with an open upper surface, and in order to prevent the generation of odors in the vicinity of drainage facilities, a lid is generally attached to the upper surface opening, but as described above, In the case of a vinyl chloride resin box with a relatively small diameter and good airtightness, the pressure inside the tube changes greatly when the lid is closed because the airtightness is good. There was a problem that the flow of water was not smooth and the flow velocity could not be kept constant. As a result, there was a problem that abnormal sound was generated in the pipe.

On the other hand, when the lid is opened, the above problems can be solved, but the generation of odor cannot be prevented at all.

The present invention has been made in order to solve all of the problems described above. When the device is attached to the opening of a box made of a vinyl chloride resin having a relatively small diameter as described above, the inside of the pipe becomes negative. An object of the present invention is to provide a lid with an intake valve that does not reduce the flow of fluid even when in a pressure state, can maintain a constant flow velocity, and does not generate odor.

[0007]

[Means for Solving the Problems]

 The present invention has been made as a solution to such a problem, and a means for solving the problem is a masu 12 attached to a connecting portion of a drain pipe 11 arranged as a drainage facility of a building, a structure, or the like. Is a lid for closing the upper opening of the lid, and is provided with an intake hole 4 for intake of outside air, and when the inside of the drainage pipe 11 is in a positive pressure state, the intake hole 4 is opened. An intake check valve 5 that is closed and opens the intake hole 4 when the drain pipe 11 is in a negative pressure state is attached to the back side of the lid body 1.

[0008]

[Action]

 That is, since the intake check valve 5 as described above is attached to the back surface side of the lid body 1, such an intake valve lid is attached to the upper surface of the masu 12 attached to the connecting portion of the drain pipe 11. If it is installed in the opening, if the pressure inside the drainage pipe becomes negative, the pressure inside the drainage pipe becomes significantly smaller than the external pressure (atmospheric pressure), and as a result, suction action occurs inside the pipe and The stop valve 5 operates to open the intake hole 4.

Therefore, the inside and outside of the pipe are brought into communication with each other through the intake hole 4, and perfect airtightness is released, so that the negative pressure state is also eliminated.

On the other hand, in the positive pressure state (when not in the negative pressure state), since the suction action does not occur in the pipe, the intake check valve 5 does not operate, so that the intake hole 4 is maintained in the closed state. Sometimes it will.

As described above, the intake check valve operates according to the change in the pressure in the pipe, and the intake hole 4 can be freely opened and closed.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a lid with an intake valve used for a drain pipe provided as a drainage facility of a house as an embodiment, and FIG. 2 is a sectional view taken along the line AA of FIG.

In FIGS. 1 and 2, reference numeral 1 denotes a lid main body made of vinyl chloride resin, which is a top circular plate 2 and a shallow cylinder protruding downward from a peripheral portion of the back side of the top 2 It is composed of a cylindrical body 3.

Reference numeral 4 denotes an intake hole that is provided in the top plate portion 2 of the lid main body 1 substantially in the center thereof for intake of outside air.

Reference numeral 5 denotes a side substantially pistol check valve for intake, which closes the intake hole 4 at all times and opens the intake hole 4 when the drain pipe is in a negative pressure state. A weight 6 is internally mounted, and is rotatably supported by a pin 8 on a projecting piece 7 projecting downward from the top plate portion 2 of the lid body 1.

Reference numeral 9 denotes a rubber sealing material for making the intake hole 4 more completely closed, and is attached to the tip end side of the intake check valve 5.

As shown in FIG. 3, the lid 10 with the intake valve having the above-described structure is attached to a connecting portion of the drainage pipes 11, ... It is used by being attached to the upper opening of the box 12 to be used.

More specifically, in the lid 10 with the intake valve, the outer peripheral surface of the body portion 3 of the lid body 1 is brought into contact with the inner surface side of the opening of the box 12 as shown in FIG. The plate portion 2 is used by being fitted in the box 12 so that the back surface of the peripheral edge of the plate section 2 abuts on the opening edge of the box 12.

When the lid 10 with the intake valve is fitted in the opening of the square 12 in this way, the check valve 5 for suction is in the normal position by the weight of the weight 6 as shown in FIG. The state is maintained, and as a result, the tip end side of the lid 10 with the intake valve abuts the back surface side of the top plate portion 2 of the lid body 1 at the position where the intake hole 4 is formed through the sealing material 9, The intake hole 4 is closed.

When the inside of the container 12 and more specifically, the inside of the drain pipe 11 is in a positive pressure state (a steady state without negative pressure), the external pressure (atmospheric pressure) and the pressure inside the drain pipe 11 are equal to each other. Since the intake check valve 5 is in an almost equilibrium state, no external pressure acts on the intake check valve 5, and the intake hole 4 is closed by the intake check valve 5.

On the other hand, when the inside of the drain pipe 11 is in a negative pressure state, the inside of the drain pipe 11 becomes significantly lower in pressure than the outside pressure (atmospheric pressure). As a result, the intake check valve 5 pivots around the pin 8 as shown in FIG. 5, the intake check valve 5 is separated from the intake hole 4, and the intake hole 4 Will be opened.

Therefore, the outside and inside of the drainage pipe 11 are brought into communication with each other by the opening of the intake hole 4, and the negative pressure state in the drainage pipe 11 is immediately released, so that the flow of fluid in the pipe may deteriorate. In addition, the flow velocity can be kept constant, and therefore abnormal noise does not occur in the pipe.

In the above embodiment, the intake check valve 5 is a substantially pistol type in which the weight 6 is installed on the bottom side, but the type and structure of the intake check valve 5 are not limited to this. However, the structure may be such that a spring is attached to the valve body, for example. In this case, in the positive pressure state, the urging force of the spring urges the valve element to close the intake hole 4, and in the negative pressure state, the valve element resists the urging force of the spring by the external pressure. Then, the intake hole 4 is opened. Further, it may be one other than the one utilizing the biasing force of such a spring, and in any case, the type and structure of the intake check valve 5 are not limited.

The shape of the lid body 1 is not limited to the substantially circular shape in the plane of the embodiment, and the shape can be arbitrarily changed according to the shape of the box 12.

Further, the structure of the lid main body 1 is not limited to the one composed of the top plate 2 and the body portion 3 as in the embodiment, and the point is that the lid body 1 can close the upper opening of the box 12. I wish I had it.

Further, the material of the lid body 1 is not limited to the vinyl chloride resin of this embodiment.

Further, in the above-described embodiment, the case where the intake lid 10 is used for the drainage pipe arranged as the drainage facility of the house has been described, but the structure or the building having the drainage facility to be used is described. The type is not limited to houses, but it can also be used for drainage pipes installed as drainage facilities for other buildings and structures, and its use is not critical.

[0029]

[Effect of device]

 As described above, according to the present invention, the lid body is provided with an intake hole for intake of outside air, and the intake hole is always closed so that the inside of the drain pipe is in a negative pressure state. Since the intake check valve that opens the valve is installed on the back side of the lid body, if the inside of the drain pipe becomes a negative pressure, suction action will occur in the pipe, and as a result, the above check valve for intake will be generated. The valve is activated to open the intake hole, and complete airtightness is released.Therefore, even if the valve is attached to the opening of a relatively small vinyl chloride resin container, the inside of the pipe will be in a negative pressure state. In this case, the fluid flow does not deteriorate, and the flow velocity can be kept constant, so that abnormal noise does not occur in the pipe as in the conventional case.

On the other hand, in the positive pressure state (when not in the negative pressure state), the suction action does not occur in the pipe, so the intake check valve does not operate, and therefore the closed state of the intake hole is maintained. As a result, the odor in the drainage pipe is not discharged to the outside under normal conditions, and thus the odor is not inadvertently generated.

As described above, according to the present invention, when the conventional relatively small-diameter vinyl chloride resin box is used, abnormal noise is generated in the negative pressure state in the pipe, the cell is damaged, and odor is generated. It is possible to solve the two contradictory problems at the same time, and as a result, there is a practical benefit that it can contribute to the widespread diffusion of vinyl chloride resin-made masu.

[Brief description of drawings]

FIG. 1 is a plan view of an intake lid as one embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a usage state.

FIG. 4 is a cross-sectional view of essential parts showing a usage state.

FIG. 5 is a cross-sectional view of essential parts showing an opened state of intake holes.

[Explanation of symbols]

 1 ... Lid body 4 ... Intake hole 5 ... Intake check valve 10 ... Intake valve lid 11 ... Drain pipe 12 ... Masu

Claims (1)

[Scope of utility model registration request] 1. A lid for closing an upper opening of a box (12) attached to a connecting portion of a drainage pipe (11) arranged as a drainage facility for buildings, structures, etc. A suction hole (4) for
An intake check valve (5) that closes the intake hole (4) when the inside of (11) is in a positive pressure state and opens the intake hole (4) when the inside of the drain pipe (11) is in a negative pressure state. ) Is attached to the back side of the lid body (1), and a lid with an intake valve in drainage facilities for buildings, structures, etc.