JPH11125349A - Vacuum valve and kitchen drainage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of lodging of foreign matters between a valve element and a sleeve and to perform a constantly smooth stock by the valve element. SOLUTION: In this device, when a negative pressure is introduced in a valve head 26 through an intake port 39, a piston 31 is raised and a valve element 24 is parted from a seat part 23 and opened. When an atmospheric pressure is introduced in the valve head 26, the valve element 24 is seated through the force of a return spring 38. Since an annular body 41 is arranged, foreign matters are prevented from entering the upper side of the valve element 24 even when the stroke speed of the valve element 24 is low. Even when the annular body 41 is raised and the internal space of the annular body 41 is brought into a sealed state by a membrane 34, the internal part of the annular body 41 always communicates with the internal part of a valve body 20 through an opening 42. Thus, when an atmospheric pressure is introduced in the valve head 26, the valve element 24 is smoothly moved in a seating direction through the energizing force of the return spring 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum valve and a kitchen drainage device using the same. More specifically, the present invention relates to a vacuum valve and a kitchen drainage device which are improved so as to eliminate an operational obstacle due to foreign matter such as garbage.

[0002]

2. Description of the Related Art As is well known, a vacuum drainage system is configured to suck and drain wastewater through a vacuum drainage pipe. FIG. 3 is a flow path configuration diagram in which the vacuum drainage system is applied to a building such as an apartment building. The water flows into the water collecting tank 7 via the branch pipe 5 and the vertical drain pipe 6. The water collecting tank 7 has a vacuum pump 9
Is provided to reduce the pressure inside the tank 7. The sewage in the water collecting tank 7 is sent to a drainage basin or the like via a drainage pump 8.

FIG. 2 is a diagram showing the configuration near the connection pipe 3. In this case, a disposer (garbage crusher) is attached to the sink 1.
The connection pipe 3 is connected to the discharge port 11 of the disposer 10. The upstream side of the vacuum valve 4 of the connection pipe 3 is routed so as to have a slightly lower level than the vacuum valve 4, and an air supply pipe 12 and a vacuum valve controller 14 are provided so as to rise from this low level. Have been. A check valve 13 is provided in the air supply pipe 12.

The vacuum valve controller 14 includes a tube 15
Is connected to the connection pipe 3 on the downstream side of the vacuum valve 14 via the valve 16 and is connected to the head of the vacuum valve 4 via the tube 16.

The tube 16 communicates with the atmosphere via the tube 17 and the throttle valve 18 together with the tube 19 from the air supply pipe 12.

When the water level entering the lower portion 14a of the vacuum valve controller 13 rises, the vacuum valve controller 14 opens, the tubes 15 and 16 are turned on, and a negative pressure is introduced into the head of the vacuum valve 4 so that the vacuum valve 4 Is opened, and the drainage accumulated in the connection pipe 3 on the upstream side of the vacuum valve 4 is drawn into the drain horizontal branch pipe 5 and discharged to the water collection tank 7. After this,
Since the water level in the lower portion 14a of the vacuum valve controller 14 has dropped, the vacuum valve controller 14
The communication of the valve 16 is cut off, the atmospheric pressure is introduced into the head portion of the vacuum valve 4 via the tubes 17 and 16, and the vacuum valve 4 returns to the closed state.

FIG. 4 is a cross-sectional view showing a conventional example of the vacuum valve 4. A seat 23 is provided between an inlet 21 and an outlet 22 of a valve body 20, and the valve body 24 is connected to the seat 23. It is possible to contact and separate. The valve body 20 is integrally provided with a sleeve 25 extending in an oblique direction, and a valve head 26 is coaxially connected to the sleeve 25 via an upper joint 27, a lower joint 28 and a screw 29.

The upper joint 27 is fastened to the valve head 26 by a screw 30, and the lower joint is hooked to the sleeve 25. The upper joint 27 and the lower joint 28 face the flange portions 27a and 28a provided respectively.
A screw 29 is screwed in so as to connect a and 28a to each other.

In the valve head 26, a membrane 34 is provided.
Is isolated from the inside of the valve body 20. The rod 32 is inserted through the rod support portion 37 of the membrane 34, and is attached airtight.

A piston 31 is disposed in the valve head 26 and is connected to the valve body 24 via a rod 32. An upper support 35 and a lower support 34 are mounted on the distal end of the rod 32 so as to sandwich the valve 24, and the nut 36 is screwed into a male screw engraved on the distal end of the rod 32 so that the valve 24 is 32.

The piston 31 has a return spring 3
8, the valve body 24 is urged in a direction to be seated on the seat portion 23. The tube 16 is attached to the valve head 26.
Is connected to the intake port 39.

A tube 16 is connected to the head end side of the piston 31 in the valve head 26 through the intake port 39.
When the negative pressure is transmitted through the valve, the piston 31 is pulled up, and the valve element 24 is separated from the seat portion 23 to open the valve. Conversely, when atmospheric pressure is introduced into the valve head 26 via the intake port 39, the valve body 24 is seated on the seat portion 23 by the pressing force of the return spring 38, and the valve is closed.

[0013]

In the vacuum valve 4 configured as described above, the foreign matter D easily enters the upper side of the valve body 24. In particular, when the stroke speed of the valve element 24 is low, the foreign matter D flowing along with the drainage flow easily enters the upper side of the valve element 24. When the foreign matter D gets caught between the valve body 24 and the sleeve 25, the valve body 24 does not move smoothly. When a disposer is provided as shown in FIG. 3, pieces of hard vegetables such as fish bones and root vegetables flow, so that these hard foreign substances D are removed from the valve body 24 and the sleeve 25.
Between them.

If the valve body 24 does not move smoothly due to such foreign matter biting, air is continuously sucked from the drain port of the sink 1 for a long time, and a loud air suction noise continues for a long time. The surrounding noise becomes severe. Further, the amount of air flowing into the water collecting tank 7 is increased, so that the collection of sewage is hindered, and the load on the vacuum pump 9 is increased.

The present invention solves such a problem and prevents a foreign substance from being caught between the valve body and the sleeve, and the valve body always strokes smoothly, and a kitchen drainage device using the same. The purpose is to provide.

[0016]

SUMMARY OF THE INVENTION A vacuum valve according to the present invention is a vacuum valve in which a valve body that is stroked by a negative pressure can be moved toward and away from a valve seat portion provided in a valve body. An annular wall is provided which rises from the peripheral edge of the body to the opposite side to the valve seat portion.

By providing the annular wall as described above, foreign matter is prevented from being caught between the valve body and the sleeve, and the valve body can always stroke smoothly.

By providing an opening in the annular wall or forming the annular wall of a permeable material to prevent a negative pressure from being trapped inside the annular body, the valve body can stroke extremely smoothly. .

The vacuum valve of the present invention is effective when provided in a line for discharging drainage from a sink having a kitchen disposer.

[0020]

Embodiments of the present invention will be described below with reference to FIG. FIG. 1A is a cross-sectional view of the vacuum valve according to the embodiment, and shows a cross section of a portion similar to FIG. FIG. 1B is a perspective view showing the valve body 24 and the annular body 41. In FIG. 1, the same members as those in FIG. 4 are denoted by the same reference numerals.

In the vacuum valve 40 of this embodiment, an annular body 41 is attached to the valve body 24. The annular body 41 has a cup shape, and the bottom surface portion 41b is
4 and the upper support 35 and the lower support 34
The annular body 41 is fixed to the rod 32 by tightening the nut 36.

The peripheral wall portion 41a of the annular body 41 is an annular wall rising from the peripheral edge of the valve body 24 in the direction opposite to the seat portion 23. The annular body 4 is provided on the peripheral wall portion 41a.
An opening 42 communicating between the inside and outside of the device 1 is provided. In this embodiment, a plurality of openings 42 (four in this embodiment) are provided at equally spaced positions in the circumferential direction.
Even if 4 rotates around the axis of the rod 32, the inside of the annular body 41 can always be sufficiently communicated with the inside of the valve body 20 through any of the openings 42.

In this embodiment, the sleeve 25
The inner race (gap filling material) 50 is provided along the inner peripheral surface of the sleeve 25 so that an extra gap is not generated between the outer peripheral surface of the annular body 41 and the inner peripheral surface of the sleeve 25.

In the vacuum valve 40 configured as described above, when a negative pressure is introduced into the valve head 26 from the intake port 39, the piston 31 rises, and the valve body 24 separates from the seat portion 23 and opens. . When atmospheric pressure is introduced into the valve head 26, the valve element 24 is seated by the return spring 38.

In this embodiment, since the annular body 41 is provided, even when the stroke speed of the valve body 24 is low, foreign matter does not enter the upper side of the valve body 24 and the connection between the valve body 24 and the sleeve 25 is prevented. Entrapment of foreign matter into the space is prevented, and the valve body 24 always strokes smoothly.

Since the opening 24 is provided in the annular body 41, the annular body 41 rises with the opening of the valve body 24, and the internal space of the annular body 41 is sealed by the membrane 34. Even if it does, the inside of the annular body 41 always communicates with the inside of the valve body 20 via the opening 42. Therefore, when atmospheric pressure is introduced into the valve head 26, the annular body 41 and the valve body 24 move smoothly in the seating direction by the urging force of the return spring 38. If the opening 42 is absent, a negative pressure builds up in the annular body 41, requiring a large force to separate the annular body 41 from the membrane 34, and the valve body 24 may not close smoothly. Occurs.

In this embodiment, the inner race 50 is provided so as not to generate an extra gap around the annular body 41, so that the valve body 24 can smoothly stroke. become.

In the illustrated embodiment, the circular opening 4
2, the opening 42 is oval, square,
Various shapes such as a slit shape can be used. The opening is not limited to a hollow shape as shown in the figure, but may be a notch shape such as a V shape or a U shape provided in a cut shape from the edge of the annular body 41.

In the present invention, the annular wall may be made of a gas-permeable material (for example, a material such as a sponge or a net that allows air to pass through without passing dust). The opening may or may not be provided in the annular wall made of the air-permeable material. Even when the annular wall is made of a gas-permeable material as described above, it is possible to prevent the negative pressure from being trapped inside the annular wall, and the seating operation of the valve body is smoothened.

When the annular wall is made of a flexible material such as a sponge, the annular wall bends even if the annular wall hits the membrane 34 when the valve is opened. Can be taken.

[0031]

According to the present invention, the following excellent effects can be obtained.

[0032] Foreign matter is prevented from entering the upper side of the valve body in the closed state by the annular wall, and the valve body smoothly strokes.

By not providing an extra gap between the annular wall and the sleeve by providing an inner race or the like, foreign matter is prevented from being caught and the valve body can stroke more smoothly.

By providing an opening in the annular wall, or by forming the annular wall from a gas-permeable material and constantly communicating the inside and outside of the annular wall, a negative pressure is prevented from being trapped inside the annular wall,
The seating operation of the valve body becomes smooth.

Since the seating of the valve element is smooth, the amount of air leaking into the vacuum flow path is extremely small, and the operation time of the vacuum pump of the water collecting tank can be shortened.

Similarly, it is possible to prevent the air from being strongly sucked into the drain port or the like of the sink for a long period of time, so that noise during drain operation can be reduced and the time can be shortened.

The vacuum valve controller can be set so that the valve body is immediately closed after the sewage is sufficiently sucked and discharged, and the amount of drainage associated with one vacuum valve opening operation can be increased. Further, the amount of drainage storage can be increased.

[0038] Relatively large and hard dust and the like discharged from the disposer can be smoothly discharged without being caught.

[Brief description of the drawings]

FIG. 1A is a sectional view of a vacuum valve according to an embodiment,
(B) is a perspective view of the vicinity of the valve element.

FIG. 2 is a side view showing an installation state of a vacuum valve.

FIG. 3 is a diagram of a vacuum drainage system.

FIG. 4 is a sectional view of a conventional vacuum valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sink 4,40 Vacuum valve 10 Disposer 20 Valve body 21 Inflow port 22 Outflow port 23 Seat part 24 Valve body 25 Sleeve 26 Valve head 31 Piston 32 Rod 38 Return spring 41 Annular body 41a Peripheral wall part (annular wall) 42 Opening 50 Inner race

Claims (4)

[Claims] 1. A vacuum valve in which a valve element that is stroked by a negative pressure is configured to be able to contact and separate from a valve sheet part provided in a valve body, from a peripheral edge of the valve element to a side opposite to the valve sheet part. A vacuum valve characterized by having an annular wall rising up. 2. The vacuum valve according to claim 1, wherein an opening communicating the inside and outside of the annular wall is provided in the annular wall. 3. The vacuum valve according to claim 1, wherein the annular wall is made of a gas-permeable material. 4. A kitchen drain device having a disposer provided at a drain port of a sink of a kitchen sink, a vacuum drain pipe connected to a drain port of the disposer, and a vacuum valve provided at the vacuum drain pipe. A kitchen drainage device wherein the vacuum valve is the vacuum valve according to any one of claims 1 to 3.