JP2000213055A - Vacuum type sewage disposal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve sewage discharge by providing a discharge pipe rotatable at a high speed on a collecting container held to be used in the partial vacuum state. SOLUTION: When a sewage valve 4 is opened, the atmospheric pressure thrusts the sewage in a flush toilet stool 1 into an intermediate container 3 through a sewer pipe 2, and the flush toilet stool 1 is made empty. The sewage from the intermediate container 3 flows to a discharge pipe 8. The discharge pipe 8 is applied with the same partial vacuum as that existing in the intermediate container 3, and a liquid column is formed. When the discharge pipe 8 is rotated at a high speed, centrifugal force is generated, and the sewage in the discharge pipe 8 is extruded to the end portion of the discharge pipe 8 by the force exceeding the reaction force applied by the partial vacuum. Part of the sewage is discharged from the discharge pipe 8 through a valve means 10, thus sewage discharge can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a vacuum-type sewage treatment apparatus according to the preamble of claim 1.

[0002]

BACKGROUND OF THE INVENTION A significant problem with vacuum sewage treatment equipment is that it carries sewage in the sewage treatment equipment from a point under partial vacuum to a point under atmospheric pressure. The problem is that some methods allow for the continuous transport of sewage from a space under partial vacuum in a vacuum sewage treatment system, while other methods allow for only intermittent transport. Has been solved for some time. UK Patent No. 2,
No. 012,334 discloses a solution which allows a continuous transport of sewage. At the end of the vacuum type sewage treatment apparatus, a liquid column whose height corresponds to the partial vacuum of the vacuum type sewage treatment apparatus is provided. Sewage can continuously flow from the vacuum type sewage treatment apparatus to a space under atmospheric pressure through the liquid column. However, a disadvantage of this known device is that if the partial vacuum is about half of atmospheric pressure, a liquid column having a height of about 5 meters is required, which obviously limits the application of this solution.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the drainage of vacuum sewage treatment plants, especially in systems based on the passage of sewage through a liquid column. In particular, it is a preferred object of the invention that the entire discharge device, including the liquid column pipe, can be fitted into a relatively small space.

[0004]

According to the present invention, there is provided a vacuum sewage system according to claim 1.

The invention is based on balancing the partial vacuum of the liquid column by inertial forces achieved by centrifugal forces rather than by gravity as in known devices. Centrifugal inertia is achieved by rapidly rotating a discharge conduit connected to the end of a vacuum sewage treatment plant.

[0006] The discharge conduit is suitably shaped such that its inlet end is located at its axis of rotation and its outlet end is located at a significant radial distance from the axis of rotation. The outlet end of the conduit is advantageously provided with a valve means which opens when the inertia of the liquid in the conduit due to the rotational movement is higher than the reaction force of the partial vacuum acting on the conduit. For this reason, the vacuum sewage treatment apparatus is emptied at any selected time without any hindrance to the function of the vacuum sewage treatment apparatus in the vacuum sewage system.

[0007] The discharge conduit of the device according to the invention has a rotational speed provided by the drive means such that the inertial force of the rotational movement at the outlet end of the conduit is about 20 to 100 times greater than the inertial force generated by local gravity. Preferably, the dimensions are determined. In this way, a device having excellent operation reliability is provided.

[0008] The outlet end of the discharge conduit is advantageously located at a distance of 15 to 55 cm, preferably 20 to 40 cm, from the axis of rotation of the conduit. With such dimensions, a sufficiently small device can be constructed, and the rotation speed of the discharge conduit is reasonable within the range of 500 rotations / minute.

The power source of the driving means of the discharge conduit is preferably an electric motor whose power is about 1 kW and whose nominal rotation speed is 1500 or 3000 rpm when connected to a 50 Hz line. . Such a motor provides a suitable rotational speed to the discharge conduit using a relatively simple drive train, such as a V-belt drive.

[0010] The vacuum pump of the vacuum type sewage treatment apparatus can receive its driving power from the same motor as the discharge conduit. The vacuum sewage treatment apparatus may be configured such that both the vacuum pump and the discharge conduit are always used simultaneously. However, if one does not want to unnecessarily rotate the discharge conduit, a removable switch may be provided in the drive means of the discharge conduit to control the rotation.

The function of the discharge conduit may also be, for example, a detection device for preventing rotation of the conduit when the amount of liquid in the conduit falls below a certain limit value and / or for closing the valve means of the conduit. Can be controlled by If the valve means of the discharge conduit is a check valve and a spring-biased force acts in the closing direction of the valve, or alternatively, the valve means of the discharge conduit is a close valve, the inertial force and the liquid in the conduit If there is a means for controlling the opening and closing movement of the valve in accordance with the amount, the same effect can be obtained.

At least the end portion of the discharge conduit is "pipe-shaped"
It is recommended that the diameter be in the form of a tube, corresponding to the dimensions of the vacuum sewage treatment plant, ie of 45 to 60 mm, preferably 50 to 55 mm. In this way, a sufficiently large amount of liquid is easily collected in the discharge conduit to ensure the functioning of the device.

To minimize vibrations caused by the eccentric rotating mass, the discharge conduit may be balanced with a counterweight, or double branched such that the center point of the rotating mass is at or near the axis of rotation. Alternatively, it may be configured as a multiplicity of branched conduits.

The discharge line of the vacuum sewage treatment plant according to the invention works very quickly. It is therefore advantageous to limit the rotation of the discharge conduit to a very short time, preferably of a few seconds at most, which is usually sufficient to achieve the desired discharge operation. The function of this limiting means may be based on measuring time or distance. In some embodiments, the rotational movement may not be full rotation,
The rotational movement may be a back and forth movement, which is a rocking movement performed rapidly.

An embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings, which show a vacuum type sewage treatment apparatus according to the present invention particularly applied to flush toilets.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a number (three in the figure) of vacuum flush toilets, and reference numeral 2 denotes a vacuum flush toilet.
Denotes a sewage pipe connected to each flush toilet, the end of which extends to open into a relatively small intermediate container 3.
Sewage carried from each flush toilet 1 is controlled by a respective normally closed sewage valve 4. Each of the sewage valves 4 can be opened if a sufficiently strong partial vacuum necessary for effectively transporting the sewage reaches the sewage pipe 2. The partial vacuum is generated by a vacuum pump 5 driven by an electric motor 6.

A rotatable discharge conduit 8 in the form of a pipe is rotatable about an axis 7 and extends from the bottom of the intermediate container 3. The conduit 8 receives the driving force from the motor 6 via the belt gear 9. The valve means 10 is located at the biasing end of the conduit and typically comprises a rigid or spring-loaded check valve or a remotely controlled closure valve. Conduit 8
Rotates in a container 11 having a bottom pipe 12.
The sewage coming from the vacuum sewage treatment system passes through a conduit 8 and into a vessel 11 from where it is led by a pipe 12 into a desired location, for example an urban sewage treatment plant, a sewage treatment plant or an integrated vessel 13.

The device shown in the figure operates as follows. The vacuum pump 5 always maintains a partial vacuum in the sewage pipe 2 as well as in the intermediate vessel 3 within an allowable upper and lower limit level, which is about half the atmospheric pressure. The flush toilet 1 opens the sewage valve 4 so that the atmospheric pressure becomes flush toilet.
The sewage in 1 is emptied by pushing it into the intermediate container 3 through the sewage pipe 2 and through the pipe 2. The sewage from the container 3 flows to a discharge conduit 8. The discharge conduit is also subjected to the same partial vacuum that is present in the intermediate container 3, forming a liquid column. By rapidly rotating the conduit 8,
A centrifugal force is generated which pushes the sewage in the conduit 8 to the end of the conduit with a force exceeding the reaction force provided by the partial vacuum. Thus, part of the sewage leaves the conduit 8 through the valve means 10. Immediately after this, the rotation of the conduit 8 can stop.

An amount of liquid must be retained in the conduit 8 so that the liquid closes the connection to atmospheric pressure at the end of the conduit. Otherwise, air may flow through the conduit 8 to the space under partial vacuum.
The sewage collected in the container 11 via the conduit 8 flows into the container 13 via the bottom pipe 12.

The discharge conduit may be branched, for example, to comprise double branches 8, 8a. Second branch pipe 8a indicated by a dotted line
, The center of gravity of the rotating mass moves as close to the axis 7 as possible. The drive train of the discharge conduit may have a remotely controlled detachable switch means 14. In this way, the pump 5 can be used without rotating the discharge conduit. Rotation of the discharge conduit and / or
The operation of the valve means 10 can also be controlled automatically, for example by means of surface level detection means 15 in the conduit 8 or in the collection container 3. Such surface level detection means
For example, upon receiving a control signal or other control command from the detecting means 15, the control center 1 which starts the pump 5 and / or switches the switch means 14
6 may be included. The pressure gauge 17 is also coupled to the control center 16 to ensure that the vacuum sewage treatment plant always has a sufficiently strong partial vacuum. If the valve means 10 is a controlled check valve, the control is actuated by a signal provided by the control center.

The present invention is not limited to the disclosed embodiments, but has features equivalent to, but not necessarily included in, any of the claims. Several changes or modifications are possible, including changes.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a vacuum type sewage treatment apparatus according to the present invention applied to a flush toilet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rinse toilet 2 Sewage piping 3 Collection container 4 Sewage valve 5 Vacuum pump 6 Driving means 7 Rotation axis 8 Discharge conduit 9 Driving means 10 Valve means 14 Switching means 15 Liquid level detection means

Claims (13)

[Claims] 1. A normally closed drain valve (4) connected to a collection vessel (3) held for use under partial vacuum, such as by a vacuum pump (5), for example,
In a vacuum sewage treatment system having at least one sanitary device (1), such as a flush toilet, a rapidly rotatable discharge conduit (8), which, when rapidly rotated, discharges sewage from said discharge conduit. The collection vessel (3) is provided with a rapidly rotatable discharge conduit (8) arranged to apply an inertial force to the sewage in the discharge conduit against the force exerted by the partial vacuum. Vacuum type sewage treatment equipment. 2. The discharge conduit (8) has an inlet end at the axis of rotation (7) of the discharge conduit and a radial direction which is a radial distance that is a considerable radial distance from the axis of rotation (7) of the discharge conduit. Device according to claim 1, characterized in that it has an outlet end at a distance, the outlet end being provided with valve means (10). 3. The discharge conduit (8) is provided by driving means (6, 9) such that the inertial force due to the rotational movement of the discharge conduit (8) is 20 to 100 times greater than the inertial force due to local gravity. Device according to claim 1 or 2, characterized in that it is dimensioned with respect to the rotational speed. 4. The device according to claim 3, wherein switching means (14) are provided between the drive means (6, 9) and the discharge conduit (8). 5. Apparatus according to claim 3, wherein the drive means for the discharge conduit comprises a motor, preferably an electric motor. 6. The vacuum pump according to claim 2, wherein said vacuum pump receives its driving force from the same drive means as said discharge conduit.
The device according to item. 7. The outlet end of said discharge conduit (8) is arranged at a distance of about 15 to 55 cm, preferably about 20 to 40 cm from the axis of rotation (7) of said discharge conduit. The apparatus according to claim 3, claim 4, claim 4, or claim 5 or claim 6, wherein the apparatus is a dependent claim of claim 2. 8. The discharge conduit (8) or the collecting vessel (3) is provided with means (15) arranged to prevent rotation of the discharge conduit (8), and the discharge conduit. And / or wherein the valve means (10) is arranged to close when the amount of liquid therein falls below a certain limit. Apparatus according to any of the preceding claims. 9. When the valve means (10) of the discharge conduit (8) is a check valve, a spring bias acts in the closing direction of the valve, or alternatively, the discharge conduit (8). Means (15) for controlling the opening and closing movement of the liquid in the discharge conduit according to the inertial force of the liquid when the valve means (19) is a closing valve.
Is provided in any one of claim 2, claim 6, or claim 7, or claim 2.
Apparatus according to any one of claims 3 to 5, or claim 8, if dependent. 10. The device according to claim 9, wherein a control device is provided on the check valve. 11. The outlet conduit (8) has at least one outlet end with a diameter of 45 to 60 mm, preferably 5 to 60 mm.
Characterized by a generally cylindrical shape from 0 to 55 mm,
Apparatus according to any one of the preceding claims. 12. The discharge conduit (8, 8a) is double-branched or multi-branched such that the center of its rotational mass is at or near the rotational axis (7) of the conduit. Device according to any of the preceding claims, characterized in that: 13. A drive means (6, 7) for said discharge conduit (8).
14. The method according to claim 2, wherein said means for restricting rotation of said discharge conduit to a short period of time, preferably a few seconds, is provided. Apparatus according to any one of claims 3 to 6, claim 8, claim 11 or claim 12, if one or each is dependent on claim 2.