KR20040020931A - Vacuum sewer system - Google Patents

Abstract

The invention relates to a method for transporting waste material in a vacuum sewer system, which includes a source of waste (1), a sewer pipe (2, 21, 22), a first discharge valve (3) between the source of waste (1) and the sewer pipe (1, 21), a second discharge valve (4) in the sewer pipe (2), a waste receiving space and means (100) for generating vacuum into the sewer pipe. Waste is transported in the form of waste slugs, whereby during a first phase, the waste slug is conveyed from the waste source (1) through the first discharge valve (3) into the sewer pipe (2, 21, 22) by way of vacuum, and in a second phase, waste is conveyed further in the sewer pipe (2, 21,22), in the direction of the receiving space. For automatically adjusting the flush cycle according to the waste slug, in the first phase, the pressure flow after the waste slug, higher than said vacuum, is introduced from the location (9) after the first discharge valve (3) to the second discharge valve (4) for closing the same so that the flow through the first discharge valve is stopped, and in the second phase, a vacuum connection to the second discharge valve (4) is activated for opening the same.

Description

Vacuum sewage system {VACUUM SEWER SYSTEM}

Vacuum sewage systems of this kind are already known. However, the noise level associated with known flush sequences is high. In addition, to ensure that all sources of waste, such as toilets in toilets, are reliably emptied, the cleaning sequence must be adjusted to be long enough to release more dirt under the drain during the cleaning sequence. It has a decisive influence.

The present invention relates to a method of transporting dirt in a vacuum sewage system according to the preamble of claim 1.

1 is a cross-sectional view of a vacuum sewage system according to the present invention.

It is an object of the present invention to provide a method which avoids the above mentioned problems and can effectively transport dirt by simple means. This object is achieved by the method according to the invention, the features of which are described in claim 1.

The basic idea of the invention is to automatically determine the length of the cleaning sequence according to the amount of dirt, ie the size of the separated waste slug or waste batch to be transported, in which case per cleaning sequence The amount of air is constant. If the second discharge valve is closed after the waste batch has been transported through the first discharge valve, the flow through the first discharge valve and thus the passage of air is also terminated.

If the flow rate increases from the beginning of the flow, ie from the beginning of the waste batch to the stop of the flow, the flow through the first discharge valve is substantially accelerated. If the flow resistance is smaller, the so-called after-air accompanying the dirt arrangement accelerates the flow rate more proportionally. Flow resistance is directly proportional to the noise level.

In the present invention, the amount of after-air passing through the first discharge valve is optimized and partially minimized when the flow rate is reduced, which significantly lowers the noise level. In addition, the function of the cleaning or discharge sequence is controlled by air pressure by the control means using a vacuum which is widely used in vacuum sewage systems.

The closing of the second discharge valve is preferably a control means in which the vacuum connection to the opening auxiliary valve is activated, so that a flow connection is formed between the second discharge valve and the waste arrangement passing through the position following the first discharge valve, In that case, the auxiliary valve is closed after a predetermined time from the flow of the waste arrangement through the first discharge valve is stopped.

The control means also advantageously activate the vacuum connection to the opening first release valve, in which case the closing takes place after a certain time after the flow of the waste batch through the first discharge valve is stopped.

It is also advantageous for the control means to activate the vacuum connection to the opening flushing water valve, in which case the flushing water valve closes after a predetermined time following the closing of the first discharge valve.

In order to increase the discharge efficiency of the system, it is desirable to have an aeration valve connected to the sewage pipe, in which case the control means after a predetermined time following the opening of the first discharge valve for passing the transport air into the sewage pipe. It is advantageous to be able to activate a vacuum connection to the air inlet valve which opens the sewage pipe, in which case the air inlet valve closes after a predetermined time following the opening of the second outlet valve.

The predetermined time associated with the valve described above is preferably controlled with the help of control means and a flow restrictor connected to the valves. The flow restrictor is preferably a nozzle, and the desired time effect can be obtained by changing its dimensions. Of course, as an alternative, an arrangement of adjustable valves may be used.

The invention also relates to a vacuum sewage system, the main features of which are shown in claim 11. Preferred embodiments of vacuum sewage systems are shown in claims 12-18.

Hereinafter, the present invention will be described in more detail by way of example only with reference to the accompanying schematic drawings.

In the present embodiment, in this embodiment, the waste supply source, which is the toilet unit 1, the first part 21 of the sewage pipe, the second part 22 of the sewage pipe, the first part 21 of the sewage pipe, and the toilet. The first discharge valve 3 between the unit 1 and the sewage pipe 2, ie the second discharge valve 4 between the first part 21 of the sewage pipe and the second part 22 of the sewage pipe, The cross section of the vacuum sewage system containing the sewage pipe 2 comprised is shown. The second part 22 of the sewage pipe is guided to the waste accommodation space although not shown. The vacuum sewage system comprises means for generating a vacuum of the sewage pipe 2, which means is indicated only by reference to the arrow 100.

A control system for automatically controlling the length of the flush cycle of the toilet unit 1 is connected to the toilet unit 1 according to the amount of dirt transported from the toilet bowl 11 to the sewage pipe 2.

The control system comprises control means 5 and there is a flow connection from the control means by the tube means to the second part 22 of the sewage pipe under constant vacuum maintained in the vacuum sewage system. The flow connection is arranged on the position 6 located after the second discharge valve 4, ie on the dirt receiving side of the second discharge valve. Correspondingly, there is a flow connection from the control means 5 to the auxiliary valve 8 and the air intake valve 7 connected to the first part of the sewage pipe 21. In addition, the flow connection by the tube means is arranged from the control means 5 to the first discharge valve 3 and to the wash water valve 10 of the toilet unit. Pneumatic activator means 12 are connected to the control means 5 by tube means which form a flow connection.

The first tube means 51 between the control means 5 and the second part 22 of the sewage pipe is connected to the auxiliary valve 8 by means of a first tube part means 71 in which a first flow restrictor 31 is arranged. And second tube means 52 between the second discharge valve 4. The first tube means 51 has a first one-way valve 41 and a second one-way valve 42 disposed opposite the connecting position of the first tube portion means 71.

A second flow restrictor 32 is provided in the second tube part means 72 which is guided to the valve 7 and branched out of the third tube means 53 leading from the control means 5 to the auxiliary valve 8. Is prepared.

A third flow limiter 33 is disposed in the wash water valve 10, and a fourth flow limiter 34 is disposed in the control means 5.

Preferably, the flow restrictors 31, 32, 33, 34 described above are nozzles, in which case the desired effect can be provided by changing the dimensions of the nozzles. On the one hand, an adjustable valve arrangement can be used.

The vacuum sewage system according to the present embodiment has the following operating principle.

When the toilet unit 1 is not in use, the first discharge valve 3 is closed. The auxiliary valve 8 and the air inlet valve 7 connected to the first part 21 of the sewage pipe 2 are also closed. The auxiliary valve 8 is a diaphragm valve which, in the closed position, interrupts the connection between the second tube means 52 and the eighth tube means and opens the connection when in a correspondingly open position. The second discharge valve 4 is connected to the sewage pipe 2 (more precisely under the vacuum maintained in the vacuum sewage system) via a connection formed by the first tube part means 71 and the second tube means 52. The second part 22 of the pipe 2} is open.

When the toilet unit 1 is used and the dirt accumulates in the toilet bowl 11, the sewage pipe 2 will be cleaned downwards and the cleaning sequence will be activated by actuating the pneumatic activation means 12. This may preferably be a cleaning button connected to a bellows system which provides air waves in the direction of the control means 5 via the fourth tube means, for example by pressing the cleaning button.

The air pulse generated by the pneumatic activating means 12 is generated from the sewage pipe 2 via the first tube means 51 via a fifth tube means 55 in which a vacuum is connected to the control means. It is arranged to act on the control means 5 in such a way that it is connected to the first discharge valve 3, in which case the first discharge valve opens upwards. Correspondingly, the vacuum is supplied to the auxiliary valve 8 through the third tube means 53, to the wash water valve 10 through the sixth tube means 56, and to the third tube means 53 and the second. It is connected to the air inlet valve 7 via tube part means 72, in which case the three valves are also open upwards. The air inlet valve 7 is arranged to open with a predetermined delay time under the influence of the second flow limiter 32.

When the first discharge valve 3 is opened, the ambient air pressure of the toilet bowl 11 pushes dirt and washing water in the toilet into the sewage pipe 2 maintained under vacuum through the discharge valve 3. In such vacuum sewage systems, the dirt is transferred or moved intermittently and in the form of so-called dirt batches or separated dirt slugs that completely fill the diameter of the sewage pipe. This also means that a pressure front higher than the underpressure follows the dirt slug.

At a predetermined position 9 of the sewage pipe 2, ie at the first part of the sewage pipe, preferably almost immediately after the first discharge valve 3, the flow connection is carried out by the eighth tube means 58. It is arranged in the auxiliary valve (8). As the dirt slug passes through this position 9, via the second tube means 52, via the auxiliary valve 8 in the open position under the influence of the vacuum control of the eighth tube means 58. The pressure front in question of moving and closing up to the second discharge valve 4 causes a sudden increase in pressure. Thus, the flow through the first discharge valve stops.

At the end of the predetermined control period of the control means 5, ie, in fact the extended vacuum effect provided by the fourth flow limiter 34, the ambient air pressure is connected to the tube means 53, 72, 55 and 56, and 1 has an effect on the discharge valve (3), the auxiliary valve (8), the air inlet valve (7) and the washing water valve (10), in which case the first discharge valve (3) and the auxiliary valve (8) are almost immediately It is closed. On the other hand, the air mixing valve 7 and the washing water valve 10 are opened for a while due to the second flow limiter 32 and the third flow limiter 33 disposed therewith. By extending the opening time of the washing water valve 10, the toilet bowl 11 has a water mirror provided for the next cleaning cycle. There is a flow connection from the washing water valve 10 to the toilet bowl 11 of the toilet unit 1 by the seventh tube means 57.

Since the auxiliary valve 8 is closed, i.e., in the closed position, the second valve means 52, the first tube part means 71 and the first tube means (through the first flow restrictor 31) Via the connection generated by the valve 51), there is air release (in the direction of the vacuum acting on the second part 22 of the sewage pipe), in which case the second discharge valve 4 is again under vacuum against it. Open upwards. However, the air inlet valve 7 is still open (under the influence of the second flow restrictor 32), in which case the transport further aids in the transport of dirt slugs flowing into the first part 21 of the sewage pipe. There is air, whereby the dirt is forcibly moved into the second part 22 of the sewage pipe and further into the dirt receiving space. After a predetermined time by the second flow restrictor 32, the air inlet valve 7 is closed, and then the cleaning or discharge cycle is completed and the part of the vacuum sewer system in question is in the resting state for a new cleaning or discharge period. Return to

According to the above, the first, second, third and fourth flow restrictors 31, 32, 33 and 34 have their dimensions (the nozzle's dimensions) so that the control of the vacuum sewage system can be operated as desired. It is preferable that it is a nozzle.

The opening time of the discharge valve 3 can be adjusted with the fourth nozzle of the control means 5. This control also affects the opening times of the flushing water valve 10, the auxiliary valve 8 and the air intake valve 7. Smaller nozzles prolong the vacuum duration of operation, ie the opening time of the valves.

The injection time and the amount of auxiliary transport air are controlled by the second nozzle 32, in which case the smaller nozzle helps to inject a large amount of transport air by keeping the air inlet valve 7 open for a long time.

On the other hand, the first nozzle 31 has the following effects on the operation of the second discharge valve 4. Smaller nozzles may accelerate the closing of the valve, thus affecting the amount of air that is swept away along with the sludge slug through the toilet bowl 11 of the toilet unit 1. In a known vacuum sewage system in which the cleaning cycle is constant, the amount of air delivered to the sewage pipe 2 varies with the amount of dirt slugs. In the system according to the invention, the amount of said air per cleaning cycle is always constant. In addition to the effects described above, another advantage of this arrangement is that the capacity of the vacuum sewage system is more easily dimensioned and also facilitates control of the system.

The level of the water mirror is adjusted in the toilet bowl 11 by the third nozzle 33 of the washing water valve (10). The total amount of water is determined by the interaction of the third and fourth nozzles 33 and 34, in which case smaller nozzles will increase the amount of flushing water supplied by extending the opening time of the valve. Can be.

The foregoing detailed description and the accompanying drawings are only intended to clarify the basic idea of the invention. The method and system according to the invention may be modified within the scope of the claims.

Claims (18)

For example, a first discharge valve 3 between a waste supply source 1, 11, a sewage pipe 2, 21, 22, a waste supply source 1, and a sewage pipe 2, such as a toilet unit, a shower unit or a sink. ), A method for transporting dirt in a vacuum sewage system comprising a second discharge valve 4 in the sewage pipe, a waste receiving space and means for generating a vacuum in the sewage pipe, Sewage is transported in the form of dirt slugs, In the first stage, the dirt is transported from the waste supply source 1 to the sewage pipes 2, 21, 22 by vacuum through the first discharge valve 3, In the second step, in the vacuum sewage system in which dirt is transported in the sewage pipes (2, 21, 22) further in the direction of the waste receiving space, In the first step, the pressure behind the dirt slug greater than the vacuum is directed from the predetermined position 9 after the first discharge valve 3 to the second discharge valve 4 and closes it, thereby closing the first discharge valve. The flow through is stopped, In the second step, the vacuum connection to the second discharge valve 4 is activated by the overwhelming vacuum to open the second discharge valve for further transport of dirt in the sewage pipes 2, 21, 22. A method for transporting dirt in a vacuum sewage system characterized by the above-mentioned. 2. The vacuum connection to the auxiliary valve (8) according to claim 1, wherein the vacuum connection to the auxiliary valve (8) is activated by control means (5, 12) for opening the auxiliary valve, so that the position (9) after the first discharge valve and the second discharge valve (4) A flow connection is formed therebetween. 3. Method according to claim 2, characterized in that the auxiliary valve (8) is closed after a predetermined time after the flow of dirt slug through the first discharge valve (3) is stopped. Method according to claim 1, characterized in that the vacuum connection to the first discharge valve (3) is activated by control means (5, 12) for opening the first discharge valve. Method according to claim 4, characterized in that the first discharge valve (3) is closed after a predetermined time after the flow of dirt slug through the first discharge valve is stopped. 2. The vacuum connection to the cleaning water valve (10) according to claim 1, characterized in that it is activated by control means (5, 12) for opening the cleaning water valve to supply the cleaning water to the dirt supply (1, 11). How to. 7. Method according to claim 6, characterized in that the wash water valve (10) is closed after a predetermined time after the closing of the first discharge valve (3). The vacuum connection to the air inlet valve (7) leading to the sewage pipe (21) according to claim 1, wherein the vacuum connection to the air inlet valve (7) is carried out after a predetermined time after opening of the first discharge valve (3) which supplies the transport air into the sewage pipe (21). And is activated to open the valve. Method according to claim 6, characterized in that the air inlet valve (7) is closed after a predetermined time after the opening of the second outlet valve (4). The method according to any one of the preceding claims, wherein the opening and closing of the first discharge valve (3), the second discharge valve (4), the air inlet valve (7) and the flushing water valve (10). The time of is controlled by the flow limiter (31, 32, 33, 34). For example, a first discharge valve 3 between a waste supply source 1, 11, a sewage pipe 2, 21, 22, a waste supply source 1, and a sewage pipe 2, such as a toilet unit, a shower unit or a sink. In the vacuum sewage system comprising a second discharge valve 4 in the sewage pipe, a waste accommodation space and a means for generating a vacuum in the sewage pipe, In the first part 21 of the sewage pipe 2, flow connections 58, 8 and 52 are arranged at a predetermined position 9 after the first discharge valve 3 to the second discharge valve. Vacuum sewage system. The flow connection according to claim 11, wherein the flow connection is not only the second tube means (52) between the second discharge valve (4) and the auxiliary valve (8) but also the eighth tube between the auxiliary valve (8) and the position (9). Control means comprising means 58 and the auxiliary valve 8 is in fluid communication with the second part 22 of the sewer pipe 2 after the second discharge valve 4 via the first tube means 51. Vacuum sewage system, characterized in that the fluid communication through the means (5, 12) and the third tube means (53). 13. The vacuum sewage system according to claim 12, wherein the first discharge valve (3) is in fluid communication with the control means (5, 12) via a fifth tube means (55). The vacuum sewage system according to claim 12 or 13, comprising a washing water valve (10) in fluid communication with the control means (5, 12) via a sixth tube means (56). 10) is a vacuum sewage system, characterized in that in fluid communication with the toilet bowl (11) of the toilet unit (1) via the seventh tube means (57). The vacuum sewage system according to claim 12, wherein the vacuum sewage system incorporates air in fluid communication with the control means (5, 12) via the third tube means (53) and the second tube part means (72). A vacuum sewer system comprising a valve (7) and an air inlet valve (7) in fluid communication with the first portion (21) of the sewage pipe (2). 16. The tube according to any one of claims 12 to 15, wherein the first tube means (51) and the second tube means (52) are provided by a first tube portion means (71) provided in the first flow restrictor (31). Connected to each other, the fourth flow limiter 34 is attached to the control means 5, the second flow limiter 32 is attached to the air inlet valve 7, and the third flow limiter ( 33) is attached to the washing water valve (10). 17. The vacuum sewage system of claim 16, wherein the flow restrictor is a nozzle or an adjustable valve. 18. Vacuum sewage system according to any of claims 12 to 17, characterized in that there is a pneumatic activation means (12) connected to the control means (5) via a fourth tube means (54).