JP2001355261A - Vacuum sewage disposing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum sewage disposing device capable of preventing water from being accumulated in an auxiliary vacuum tank and surely discharging the water sucked from the auxiliary vacuum tank to a vacuum pipe line side. SOLUTION: This vacuum sewage disposing device comprises a sewage cesspit (sewage storage tank) 1, a vacuum pipe line 5 connected to the sewage cesspit 1 through a vacuum valve 4, pipes 35 and 36 leading a vacuum in the vacuum pipe line 5 to the vacuum valve 4 for opening and closing the valve, a switching mechanism 11 for opening and closing the valve installed in the pipes 35 and 36 and opening and closing the vacuum valve 4 by supplying the vacuum in the vacuum pipe line 5 or the outside air to the vacuum valve 4 and an auxiliary vacuum tank 37 connected in the pipe 35 for connecting the vacuum pipe line 5 to the switching mechanism 11 for opening and closing the valve and storing the vacuum from the vacuum pipe line 5. The auxiliary vacuum tank 37 is connected in series in the pipe 35 for connecting the vacuum pipe line 5 to the switching mechanism 11 for opening and closing the valve, and the connection position of the pipe 35 from the vacuum pipe line 5 to the auxiliary vacuum tank 37 is lowered than the connection position of the pipe 35 from the switching mechanism 11 for opening and closing the valve to the auxiliary vacuum tank 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum sewage treatment apparatus for sucking and discharging wastewater and excrement collected in a sewage basin or toilet bowl into a vacuum pipe.

[0002]

2. Description of the Related Art FIG. 3 is a diagram showing an example of the configuration of a conventional vacuum sewage treatment apparatus. In FIG. 1, reference numeral 1 denotes a sewage tank (sewage storage tank) for collecting and storing wastewater from various facilities such as homes and factories. The tip of a suction pipe 3 is inserted into the sewage tank 1, and the rear end of the suction pipe 3 is connected to a vacuum line 5 via a vacuum valve 4. The vacuum valve 4 has a chamber 4c and a chamber 4c.
A spring 4a housed therein, a diaphragm 4b that partitions the chamber 4c from the space on the suction pipe 3 side, and a valve body 6 that opens and closes a pipeline by moving in conjunction with the movement of the diaphragm 4b. It is provided and comprised.

[0003] Reference numeral 11 denotes a valve opening / closing switching mechanism.
And the pipe 36 or the pipe 36 and the outside air.

[0004] When the level of the sewage in the sewage tank 1 rises, a sensor (not shown) detects this, and the pipe 35 and the pipe 36 are communicated with each other in the valve opening / closing switching mechanism 11.
The vacuum line 5 and the chamber 4c of the vacuum valve 4 are connected to supply a vacuum to the chamber 4c, whereby the valve body 6 is pulled up,
The vacuum valve 4 opens. As a result, the sewage in the sewage tank 1 is sucked into the suction pipe 3, guided to the vacuum pipe 5, and conveyed to a water collecting tank (not shown).

When the level of the sewage in the sewage tank 1 falls,
A sensor (not shown) detects this, disconnects the communication between the pipe 35 and the pipe 36 in the valve opening / closing switching mechanism 11, and instead supplies the atmospheric pressure to the chamber 4c by communicating the pipe 36 with the outside air. The valve body 6 is returned to the original position, and the vacuum valve 4 is closed, whereby the suction of the sewage from the sewage tank 1 is stopped.

An auxiliary vacuum tank 37 is connected to a pipe 35 connecting the vacuum pipe 5 and the valve opening / closing switching mechanism 11 by a pipe 39 branched from the pipe 35. The auxiliary vacuum tank 37 has a function of accumulating vacuum even if the degree of vacuum of the vacuum line 5 is reduced, and sufficient vacuum is supplied to the vacuum valve 4 even if the degree of vacuum of the vacuum line 5 is reduced. Is to be done. Here, reference numeral 38 denotes a check valve for preventing air from flowing from the vacuum pipe line 5 to the auxiliary vacuum chamber 37 side to maintain the vacuum in the auxiliary vacuum chamber 37.

In the auxiliary vacuum tank 37, dew condensation is apt to occur when the internal pressure repeatedly moves up and down, and this water accumulates in the lower part of the auxiliary vacuum tank 37. When the amount of the accumulated water increases, the accumulated water is also sucked into the pipe 35 when the air in the auxiliary vacuum tank 37 is sucked into the vacuum pipe line 5 side. There is also a risk that it may enter the opening / closing switching mechanism 11 side and impair its function. In addition, the auxiliary vacuum tank 37
There is also a problem that the substantial space inside is narrowed and its function is hindered. In addition, since air flows into and out of the auxiliary vacuum tank 37 through a single pipe 39, the accumulated water in the auxiliary vacuum tank 37 cannot always be efficiently discharged.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object the purpose of making it difficult for accumulated water to accumulate in an auxiliary vacuum tank, and to ensure that water sucked out of the auxiliary vacuum tank can be prevented. Another object of the present invention is to provide a vacuum sewage treatment apparatus having a structure capable of discharging to a vacuum pipe side.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a sewage storage tank, a vacuum pipe connected to the sewage storage tank via a vacuum valve, and a valve for opening and closing the vacuum in the vacuum pipe. A valve opening / closing switching mechanism that opens and closes the vacuum valve by supplying vacuum in a vacuum pipe line to the vacuum valve or supplying outside air by attaching the pipe to the vacuum valve as a pipe leading to the vacuum valve,
In a vacuum sewage treatment apparatus comprising an auxiliary vacuum tank connected in the middle of a pipe connecting the vacuum pipe and the valve opening / closing switching mechanism and storing vacuum from the vacuum pipe, the auxiliary vacuum tank is connected to the vacuum pipe with a valve. The connection position of the piping from the vacuum line side to the auxiliary vacuum tank is lower than the connection position of the piping from the valve opening / closing switching mechanism to the auxiliary vacuum tank. did.

Here, it is preferable that the sewage storage tank is a sewage tank or a toilet for storing drainage discharged from various facilities.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing one embodiment of a vacuum sewage treatment apparatus to which the present invention is applied. The same parts as those in the conventional example shown in FIG. 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. The valve opening / closing switching mechanism 11 of the vacuum sewage treatment apparatus shown in FIG. 1 includes a casing 12 having a large diameter portion 12a and a small diameter portion 12b. In the center of the large diameter portion 12a, a partition wall 15 through which the shaft 14 of the valve body 13 passes is provided, and is divided into left and right chambers. The left chamber is first chamber 17 by a second diaphragm 16 provided at the center.
And a second chamber 18 and a third diaphragm 20 and a fourth chamber 21 by a first diaphragm 19 provided at the center of the right chamber.
Is divided into The left chamber divided into left and right chambers by the partition 22 of the small diameter portion 12b communicates with the fourth chamber 21, and the right chamber is divided into the fifth chamber 24 and the sixth chamber 25 by the partition 23.

The valve body 13 fixed to the tip of the shaft 14
The rear end of the shaft 14 is fixed to the center of the second diaphragm 16. The shaft 14 penetrates the partition 15, and a first diaphragm 19 is inserted therein (the first diaphragm 19 is fixed to the shaft 14).
2, penetrating the partition wall 23; The penetrating part through which the shaft 14 penetrates the partition 15 and the penetrating part through the partition 22 are sealed. The valve element 1 is provided in the through portion of the partition wall 23 of the shaft 14.
3, a through hole 23a is provided. Reference numeral 28 denotes a spring for pushing the first diaphragm 19 to the left.

A magnet 29 is provided on the rear end wall of the casing 12 at a position facing the rear end of the shaft 14. Room 6
5 is opened and closed by a valve 13 and provided with a hole 30 communicating with the atmosphere. Pressure detection holes 9 and 10 are provided at predetermined intervals above and below the suction pipe 3.
The pressure detection hole 10 communicates with the third chamber 20 via a pipe 32, and the pressure sensor pipe 2 communicates with the first chamber 17 via a pipe 33. The second chamber 18 has a hole 34.
In communication with the atmosphere. The fifth chamber 24 is communicated with the vacuum pipe line 5 through an auxiliary vacuum tank 37 and a check valve 38 by a pipe 35, and the sixth chamber 25 is communicated with the chamber 4 c of the vacuum valve body 4 by a pipe 36.

In the present invention, the auxiliary vacuum chamber 37 is connected in series with a pipe 35 connecting the vacuum pipe line 5 and the fifth chamber 24 of the valve opening / closing switching mechanism 11, and a vacuum pipe to the auxiliary vacuum chamber 37. The connection position of the pipe 35 from the side of the passage 5 is below the auxiliary vacuum tank 37, and the connection position of the pipe 35 from the valve opening / closing switching mechanism 11 side to the auxiliary vacuum tank 37 is above the auxiliary vacuum tank 37. That is, the connection position of the pipe 35 from the vacuum pipe line 5 side to the auxiliary vacuum tank 37 is lower than the connection position of the pipe 35 from the valve opening / closing switching mechanism 11 side to the auxiliary vacuum tank 37.

In the vacuum sewage treatment apparatus having the above structure, when the level of the sewage in the sewage tank (sewage storage tank) 1 rises and the pressure in the pressure sensor pipe 2 rises, the pressure passes through a pipe 33 and opens and closes the valve. Is transmitted to the first chamber 17 in the switching mechanism 11, whereby the second diaphragm 16 moves to the right overcoming the elastic force of the spring 28 and the magnetic attraction force of the magnet 29, and pushes the shaft 14. 13 is a hole 30 communicating with the atmosphere.
Close. Then, while the through hole 23a is closed by the valve body 13 in advance, the vacuum stored in the auxiliary vacuum tank 37 through the check valve 38 is closed by the valve body 13 and the through hole 23a is opened. This is transmitted to the fifth chamber 24 and the sixth chamber 5 through the pipe 35,
The valve body 6 is transmitted to the chamber 4c of the vacuum valve 4 through 6 to open.

As described above, when the second diaphragm 16 is pushed by the pressure in the pressure sensor tube 2 and the shaft 14 starts to move, the elastic force of the spring 28 increases with the movement, but the magnet 29 Is rapidly reduced (inversely proportional to the square of the moving distance), so that the shaft 14 moves at a stroke to the moving end, that is, the position where the valve body 13 closes the hole 30.

When the vacuum valve 4 is opened, sewage starts to be sucked,
A pressure difference is generated between the pressure detection hole 9 and the pressure detection hole 10, and the pressure difference is generated through the pipe 31 and the pipe 32.
0 is conveyed to each. This differential pressure is a force that pushes the first diaphragm 19 to the right, and the valve 13
Is pushed further to the right. Even if the water level of the sewage drops and the pressure difference between the first chamber 17 and the second chamber 18 disappears, while the sewage flows in the suction pipe 3, the pressure difference between the fourth chamber 21 and the third chamber 20 may occur. The valve 13 is kept pressed to the right.

When the water level of the sewage drops further and the lower end of the suction pipe 3 sucks air, the pressure difference between the pressure detecting holes 9 and 10 disappears.
Is pushed to the left, and the valve 13 is pushed to the left to close the through hole 23a. This makes the sixth
The air flows into the chamber 25, and the air flows into the chamber 4c of the vacuum valve 4 through the pipe 36, and closes the same.

By the way, while the vacuum valve 4 is closed (ie, during the state shown in FIG. 1), the highest vacuum degree of the vacuum line 5 is always stored in the auxiliary vacuum tank 37 by the action of the check valve 38. You. In the auxiliary vacuum tank 37, dew condensation occurs due to fluctuations in the internal pressure of the auxiliary vacuum tank 37, and accumulated water is generated. The pipe 3 is connected in series to the connecting pipe 35 and is connected to the auxiliary vacuum tank 37 from the vacuum pipe 5 side.
Since the connection position of 5 is lower than the connection position of the pipe 35 from the valve opening / closing switching mechanism 11 side to the auxiliary vacuum tank 37, the pipe 35 connecting the auxiliary vacuum tank 37 and the vacuum pipe 35 is air. Is merely sucked toward the vacuum line 5 (that is, because it is one-way), the accumulated water can be smoothly drained to the vacuum line 5, and a part of the extracted accumulated water is switched over by a valve opening / closing switching mechanism. There is no danger of entering the 11 side. Therefore, there is no possibility that the function of the valve opening / closing switching mechanism 11 is hindered.

Since there is no harm caused by the suction of the pool water as described above, the connection position of the pipe 35 from the vacuum pipe line 5 side to the auxiliary vacuum tank 37 should be set at a low position where the pool water accumulates. Thus, there is no problem that the substantial space in the auxiliary vacuum tank 37 is narrowed by the accumulated water and the function thereof is hindered.

FIG. 2 is a view showing an embodiment of a vacuum toilet according to the present invention. As shown in FIG.
Is a toilet (sewage storage tank) 111, a water supply pipe 121 for supplying cleaning water into the toilet 111, and a drain port 1 of the toilet 111.
13, a vacuum line 117 connected via a vacuum valve 115
A water supply valve 123 attached to the water supply pipe 121;
A valve opening / closing switching mechanism 125 made of a three-port solenoid valve that opens and closes the vacuum valve 115 by switching between vacuum and outside air to be supplied to the vacuum valve 115, a water supply valve 123, and a valve opening / closing switching mechanism 1
The control device 130 instructs the controller 25 to perform its operation at a desired timing, and an auxiliary vacuum tank 137 for accumulating a vacuum to be supplied to the vacuum valve 115. The valve opening / closing switching mechanism 125 opens one of the three ports to the outside air (atmosphere) so that the vacuum supply unit 141 is opened.
The vacuum or outside air on the side of the auxiliary vacuum tank 137 is switched and supplied.

A vacuum breaker 127 is connected in the middle of the water supply pipe 121. The vacuum breaker 127 prevents water in the water supply pipe 121 from flowing backward when the pressure on the water pipe side to which the water supply pipe 121 is connected is reduced, and acts to suck air instead.

On the other hand, the vacuum outlet 1 on the downstream side of the vacuum valve 115
A pipe 133 connected to 31 connects a check valve 135, an auxiliary vacuum tank 137, and a valve opening / closing switching mechanism 125, and a distal end thereof is connected to a vacuum supply unit 141 of the vacuum valve 115.

Here, the auxiliary vacuum tank 137 is connected in series in the middle of a pipe 133 connecting the vacuum pipe 117 and the valve opening / closing switching mechanism 125 similarly to the above-described embodiment, and the vacuum pipe 117 to the auxiliary vacuum tank 137 is connected. The connection position of the pipe 133 from the side is the lower part of the auxiliary vacuum tank 137 (in the vicinity of the bottom in this embodiment), and the connection position of the pipe 133 from the valve opening / closing switching mechanism 125 to the auxiliary vacuum tank 137 is the auxiliary vacuum tank 13
7 (the vicinity of the ceiling in this embodiment). That is, the connection position of the pipe 133 to the auxiliary vacuum tank 137 from the vacuum pipe line 117 is lower than the connection position of the pipe 133 to the auxiliary vacuum tank 137 from the valve opening / closing switching mechanism 125 side.

The vacuum valve 115 moves and opens the internal valve body by the vacuum supplied to the vacuum supply unit 141, and returns the internal valve body to its original position and closes by the atmosphere supplied to the vacuum supply valve 141. And Usually, it is closed by the outside air, and the vacuum line 117 is closed. Control device 130
Outputs the opening / closing command to the valve opening / closing switching mechanism 125, and inputs a cleaning start command signal from the cleaning switch 145 mounted in the toilet.

When a person first closes the lid 119 of the toilet 111 and turns on the washing switch 145, the control device 130 to which the signal is input outputs an open signal to the water supply valve 123. Thereby, supply of the flush water into the toilet 111 is started. Next, an open signal is output from the control device 130 to the valve opening / closing switching mechanism 125, and the vacuum in the auxiliary vacuum chamber 137 is supplied to the vacuum supply unit 141 of the vacuum valve 115 so that the vacuum valve 115 is opened. The cleaning water and the dirt are sucked and discharged together with the air into the vacuum pipe 117. After a lapse of a predetermined time, the control device 130 sends the valve opening / closing switching mechanism 1
When the close signal is output to the valve 25, the vacuum valve 115 closes.
At this time, the water supply valve 123 is still open and the toilet 111
After a predetermined amount of washing water has accumulated in the inside, it is closed. This completes one cleaning operation.

In this embodiment, similarly to the above embodiment, the auxiliary vacuum tank 137 is connected in series in the middle of the pipe 133, and the vacuum line 1 to the auxiliary vacuum tank 137 is connected.
The connection position of the pipe 133 from the side 17 is
7 is lower than the connection position of the pipe 133 from the valve opening / closing switching mechanism 125 to the vacuum line 117.
When the air in the auxiliary vacuum tank 137 is sucked into the pipe 13
The pooled water in the auxiliary vacuum tank 137 that has been sucked into the tank 3 is reliably and smoothly sucked into the vacuum pipe 117, and there is no possibility that a part of the water will enter the valve opening / closing switching mechanism 125 side. Therefore, there is no possibility that the function of the valve opening / closing switching mechanism 125 is hindered, and the function does not hinder the substantial space in the auxiliary vacuum tank 137 due to the accumulated water.

Particularly, as in this embodiment, the auxiliary vacuum chamber 13
The connection position of the pipe 133 from the vacuum pipe line 117 side to the bottom of the auxiliary vacuum tank 137 is
When the connection position of the pipe 133 from the valve opening / closing switching mechanism 125 side to the portion near the ceiling of the auxiliary vacuum tank 137 is
All the pooled water in the auxiliary vacuum tank 137 is discharged, and the pooled water can be most reliably prevented from entering the valve opening / closing switching mechanism 125.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and the drawings. Is possible. It should be noted that any shape or material not directly described in the specification and the drawings is within the scope of the technical idea of the present invention as long as the effects and effects of the present invention are exhibited.

For example, the structure of the valve opening / closing switching mechanism for opening / closing the vacuum valve and the structure of the auxiliary vacuum tank are not limited to the above embodiments, but may be other various structures.

[0031]

As described in detail above, according to the present invention, the auxiliary vacuum tank is connected in series to the pipe connecting the vacuum pipe and the valve opening / closing switching mechanism, and the pipe from the vacuum pipe side to the auxiliary vacuum tank is connected to the auxiliary vacuum tank. Since the connection position is lower than the connection position of the pipe from the valve opening / closing switching mechanism side to the auxiliary vacuum tank, the pool water that is simultaneously drawn out when the air in the auxiliary vacuum tank is sucked into the vacuum pipe side Is reliably and smoothly sucked into the vacuum line, and there is no possibility that a part of the gas will enter the valve opening / closing switching mechanism side, so that the function of the valve opening / closing switching mechanism will not be disturbed and the accumulated water will assist. An excellent effect is obtained in that the substantial space in the vacuum chamber is not narrowed and its function is not hindered.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a vacuum sewage treatment apparatus to which the present invention is applied.

FIG. 2 is a view showing one embodiment of a vacuum toilet according to the present invention.

FIG. 3 is a diagram showing one configuration example of a conventional vacuum sewage treatment apparatus.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Dirty water (filtration tank) 2 Pressure sensor pipe 3 Suction pipe 4 Vacuum valve 5 Vacuum line 11 Switching mechanism for valve opening and closing 35, 36 Piping 38 Check valve 37 Auxiliary vacuum tank 100 Vacuum toilet 111 Toilet bowl (filtration storage tank) 113 Drainage port 115 Vacuum valve 117 Vacuum line 119 Lid 121 Water supply pipe 123 Water supply valve 125 Valve opening / closing switching mechanism 127 Vacuum breaker 130 Control device 133 Pipe 135 Check valve 137 Auxiliary vacuum tank 145 Cleaning switch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Ogaki Winter 11-1 Haneda Asahimachi, Ota-ku, Tokyo F-term in Ebara Corporation (reference) 2D061 AA03 AB10 2D063 AA07 DC04

Claims (2)

[Claims] 1. A sewage storage tank, a vacuum pipe connected to the sewage storage tank via a vacuum valve, a pipe for guiding a vacuum of the vacuum pipe to a vacuum valve for opening and closing the valve, and a pipe installed in the middle of the pipe. A valve opening / closing switching mechanism for opening and closing the vacuum valve by supplying vacuum of a vacuum pipe or supplying outside air to the vacuum valve, and a vacuum pipe connected in the middle of a pipe connecting the vacuum pipe and the valve opening / closing switching mechanism. A vacuum sewage treatment apparatus comprising an auxiliary vacuum tank for storing a vacuum from the apparatus, wherein the auxiliary vacuum tank is connected in series in a pipe connecting a vacuum line and a valve opening / closing switching mechanism, and a vacuum tube to the auxiliary vacuum tank is provided. A vacuum sewage treatment apparatus, wherein a connection position of a pipe from a road side is lower than a connection position of a pipe from a valve opening / closing switching mechanism to an auxiliary vacuum tank. 2. The vacuum sewage treatment apparatus according to claim 1, wherein the sewage storage tank is a sewage tank or a toilet for storing wastewater discharged from various facilities.