JPS6152289B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic valve device for sanitary wastewater pipes.

It is designed to cut off the communication between the waste water pipe, that is, the sewer pipe, and the environment in the room in which it is used, and prevents the release of contaminated air, and in the event of negative pressure in the pipe, the valve is opened and the air is removed. Automatic valve systems or devices are already known which are operated in such a way that they can enter pipes.

Provided that these valves do not dissipate foul-smelling air and that automatic valves are provided in the general piping that can be opened to allow air to flow in when negative pressure occurs, such as when flushing a flush toilet. To satisfy the requirement that piping protruding from the roof can be omitted or replaced with piping housed within a building.

The aim of the invention is to obtain a device of simple design intended to solve various important problems associated with the use of such automatic valves.

The above problem is as follows.

a Valve operation must be reliable with insulation and valve capacity must be able to be increased.

b. It shall be possible to use a single type of valve to connect discharge pipes of different diameters.

c. Valves must be thermally protected and against the ingress of foreign objects that may interfere with correct operation.

In the device of the present invention, the vertical tube constituting the main body of the valve has a constriction part in the form of a ventilate at its upper end, and this constriction part cooperates with the lid body and includes a valve located outside the constriction part. It forms an ambient air inlet that can be sloped to allow fresh air to enter the vertical pipe in the event of negative pressure in the pipe, and in the event of pressure equalization or overpressure. is characterized by occupying a closed position that prevents the escape of contaminated air.

In order to more easily understand the invention, examples will now be described in detail with reference to the accompanying drawings.

In FIG. 1, the valve body comprises a vertical tube 1 connected to a discharge tube (not shown in FIG. 1), which vertical tube is in the form of a ventilary formed by a trapezoidal neck 2 terminating in a lip 3. at the top end, which in cooperation with the lid 4 forms an ambient air inlet 5 in the form of a duct which can be closed by an annular valve 6 and which in the illustrated embodiment has a trapezoidal neck externally. The annular valve located at is seated on a seat formed by the lip 3 and the lip 7 provided on the inner periphery of the lid.

For example, if a negative pressure develops in vertical pipe 1 as a result of a drain, flush or discharge operation, valve 6
It will be seen that the air is suspended so that fresh air can enter the vertical tube 1 via the duct 5. If the pressures are balanced or if an overpressure occurs, the valve 6 closes the duct 5 and prevents the release of contaminated air.

At the entrance of the ventilate, ie at the point indicated by reference numeral 3, the diameter is smaller than the diameter of the cylinder 1, so that an increase in the capacity of the valve is obtained, which makes it possible to use it in buildings with more floors than with the known method. .

One feature is that the valve 6 is never in a tilted or horizontal position (reference number 6 ¹ in FIG. 2) such that it remains in the open position when the pressures are balanced.
This is to make the inner wall 8 of the lid body 4 slope.

Furthermore, the dimensions are chosen such that, in its seated position, the valve 6 covers the air inlet even when it contacts a wall on one side.

As shown in FIG. 1, the lid body 4-8 and the main body 1
An insulator 9 is provided around the end of the cylindrical portion, and a circular recess 10 is formed to provide communication between the outside air and the inlet duct 5.

The air inlet hole 10 is conventionally provided with a member, such as a net 11, constructed and arranged to prevent the entry of insects or foreign objects.

The insulator 9 is able to keep the air warm inside the device and around the moving parts 6 and prevents the valve from freezing.

For transport, the insulator 9 can also be completed with a removable part (not shown) covering the entire bottom of the cylinder 1.

The tape 12 can be wrapped around both insulating members to secure the packing used during transportation and to maintain proper operation during transportation.

This tape is removed when the device is used.

FIG. 4 relates to an embodiment particularly suitable for carrying out the invention.

In this example, the lid constitutes a completely separate and fitted member on the cylinder.

Figures 3, 3A, 3B and 3C use a single valve type of sufficient capacity to provide different diameters (e.g. 50mm for Figure 3, 75mm for Figure 3A, 90mm for Figure 3B).
3C shows how it can be connected to a discharge pipe 13 of 110 mm).

This is possible as follows.

a The cylindrical body 1 is placed outside the tube body 13 (3rd to 3rd A
Figure) or the inside of the tube body 13 (Figures 3B to 3C)
b. Arrange the gaskets 14 (Figs. 3 to 3C) appropriately and in large numbers.

An important advantage is that, in the case of the invention, the interior of the cylindrical body 1 remains completely free, so that it can be adapted to devices such as eg siphons.

FIG. 5 shows equipment in a house, in which a large number of devices 21 (toilet, washroom, sink, etc.) used for discharging wastewater are each equipped with a trap or siphon 20, and this trap or siphon is attached to the pipe 18. It is connected to the waste water pipe 23 via.

At 19, on the other hand, a plurality of automatic valves of the type shown in FIG. 1 are provided for the discharge pipe 13.

The pipes 13 and 18 are connected to a waste water pipe 23 via a discharge pipe 24, which is equipped with a fan 25 having an outlet 26 for discharging into the outside air.

When this fan is operated, piping 13-18-
A negative pressure is created in all of the valves 24 which levitates each valve 6 of the different valves 19 (Figs. 1 and 4).
Figure) will be understood.

In this way, malodorous air can be discharged from the room via piping 24 at point 26.

The wastewater discharge pipe is also used as the exhaust system piping from the building, and this system is all under negative pressure.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the device; FIG. 2 is a detailed cross-sectional view showing one advantage of the invention; FIGS. 3, 3A, 3B and 3C allow the use of a single type of automatic valve for pipes of different diameters. A schematic diagram showing this, Figure 4 is the first
A sectional view of a modified embodiment of the figure, FIG. 5 is a schematic diagram showing an example of the application of the valve of the invention. 1... Vertical tube, 2... Trapezoidal neck, 3... Lip,
4... Lid body, 5... Duct, 6... Annular valve, 7...
... Lip, 8 ... Inner wall, 9 ... Insulator, 10 ... Hole, 11 ... Net, 12 ... Tape, 13 ...
Discharge pipe, 14... Gasket, 18... Piping, 1
9... automatic valve, 20... siphon, 21... device, 23... waste water pipe, 24... discharge pipe, 25...
Juan, 26...exit.

Claims (1)

[Scope of Claims] 1. An automatic valve device for sanitary wastewater pipes that prevents indoor communication between the wastewater pipes and the outside air and allows fresh air to be introduced into the pipes when negative pressure is generated, A vertical tube 1 constituting the main body of the valve has at its upper end a constriction part 2 in the form of a ventilate, and said constriction part cooperates with a lid body 4 to provide a valve 6 located outside of the constriction part 2. It forms an ambient air inlet 5 and slopes to allow fresh air to enter the vertical pipe 1 when a negative pressure develops in the pipe, and to allow contaminated air to escape when the pressure is balanced or an overpressure occurs. An automatic valve device characterized in that it occupies a blocked position that is prevented. 2. The annular valve 6 is configured to sit on a seat formed by the lip 3 at the end of the cylindrical tube 1 and the lip 7 located on the inner periphery of the lid 4. The device according to scope 1. 3. The inner wall 8 of the lid 4 is inclined so that when the valve 6 should be in the closed position, it is not held in an inclined or horizontal position where it is likely to be held in the open position. The device described. 4. An insulating cover 9 is provided around the cover 4-8 and the tube body, that is, the cylindrical end of the main body 1, and the cover is placed in a circular recess 10 communicating between the outside air and the air inlet duct 5. 4. A device according to any one of claims 1 to 3, characterized in that it is formed by: 5. The device according to any one of claims 1 to 4, characterized in that the lid body (4) constitutes a member that is completely separate and fits into the cylinder (1). 6. The device according to any one of claims 1 to 5, characterized in that the cover 9 is completed by a detachable member that covers the lower part of the cylinder for transportation. 7. The device according to claim 5 or 6, characterized in that a tape 12 is wound around the covering member to fix packing during transportation. 8. The air inlet hole is provided with a member, such as a net 11, constructed and arranged to prevent insects or other foreign objects from entering the air inlet hole. Apparatus according to any of paragraph 4. 9. A single type of valve with sufficient capacity is prepared by: (a) positioning the cylindrical body 1 on the outside or inside of the pipe body, and (b) arranging gaskets in various ways (3rd to 3rd C).
8. The device according to any one of claims 1 to 7, characterized in that it is used for connecting pipes 13 of different diameters. 10 First, a series of appliances 21 are arranged to discharge wastewater thereto, each appliance is provided with a trap 20, and each of the traps is connected to a pipe 1.
A waste water outlet pipe 23 is connected via a vent pipe 24, and then an automatic valve 19 of the type described in claim 1 is provided, and the discharge pipe 13 and the connecting pipe 18 are connected via a vent pipe 24 to the waste water pipe 23. The ventilation pipe is provided with a fan 25 having an outlet 26 communicating with the outside air, so that when the fan is operated, a negative pressure is generated, thereby causing the respective automatic valves 6 belonging to each device to float and be disposed of. 10. Device according to claim 9, characterized in that the air is discharged via a vent tube.