JP4673133B2 - Siphon drainage system - Google Patents

Description

  The present invention relates to an improvement of a siphon drainage system.

  In the conventional drainage system, it is necessary to give a predetermined gradient to the horizontal piping from the watering device to the standing pipe, and the height under the floor is relatively high. And the pipe diameter of a horizontal pulling pipe is also required to be comparatively thick, and a confluence joint is arranged on the same floor as a watering device at a confluence part to a vertical pipe. Such a merging joint is a relatively large joint, which is a big problem in terms of space. Furthermore, there is a problem of noise generated at the time of merging of drainage.

  In recent years, siphon drainage systems have been developed for such conventional drainage systems (Patent Document 1). In such a drainage system, as shown in FIG. 1, the horizontal pulling pipe 2 from the watering device 1 is piped without joining the other horizontal pulling pipes on the way without giving a gradient to the floor 3 surface. It leads to the vertical pipe 4. The joining part to the vertical pipe 4 is a part where the joining part 5 is arranged at a position lower than the floor 3 surface of the watering device 1, for example, a position lower by one floor, and the horizontal pipe 2 is suspended 6 toward this. . The drooping distance Hs becomes a driving force of the siphon force, and the water in the horizontal pulling pipe 2 is sucked and drained. In such a siphon drainage system, piping is always performed with one appliance and one drainage, and there is no branching or merging in the middle of the piping.

JP 2000-297447 A

  When adopting a siphon drainage system, the wastewater treatment flow rate and siphon start time are important factors. Among them, in order to increase the wastewater treatment flow rate, there are means for increasing Hs or increasing the diameter of the pipe, and further, there is a method of using two pipes. However, the former two cause the siphon start time to be delayed, and in the case of two pipes, the siphon start time could be eliminated somewhat, but basically the purpose is to increase the processing flow rate. It is an over-specification that is used only to speed up the siphon start time, which increases cost and workability, and requires a small amount of flow to be processed, but a method for speeding up only the siphon start time. There was no.

  In the siphon drainage system, for example, when it is used for a unit bath, if the siphon start time is slow, if the amount of drainage is large at one time, the drainage starts slowly, so that the drainage flows backward, for example, When there was a large amount of drainage from the bathtub, there was a phenomenon that if the siphon start time was late, the drainage spouted up from the drainage outlet of the washing place.

  The present invention provides a piping system for advancing siphon start time in a siphon drainage system.

  The gist of the present invention is the addition of a function for escaping air at the positive pressure until siphon start in the horizontal piping in the horizontal piping from the watering device and the siphon drainage system in which the horizontal piping is suspended. However, this is a drainage system with a faster siphon start time.

  The present invention is a piping system for advancing the siphon start time, and escapes air at the time of positive pressure, and has a function of not releasing air at the time of negative pressure. Is satisfied, and siphon power is given to this quickly. This prevents the drainage from overflowing.

  In a siphon drainage system, for example, if the horizontal pipe is long, the time for filling the pipe becomes long and then siphon force is generated. There is a case that cannot drain. The reason for this is that when the water is full, the front end side of the horizontal pulling pipe has a positive pressure, making it difficult for water to travel to the front end side. In the present invention, the positive pressure should be quickly removed to fill the water, and a siphon force is quickly applied to the drainage in the pipe.

  In siphon drainage, the pressure in the pipe is positive until the siphon starts, and becomes negative when the siphon starts. Therefore, in the present invention, the siphon start time can be shortened by adopting a structure in which the air in the pipe is easily removed during positive pressure. However, simply installing a ventilation tube will cause air to be sucked in when the negative pressure after the siphon starts, and the siphon will be cut off, resulting in an intermittent siphon. There is.

  Specifically, it is a system characterized by adding a function of escaping air at the time of positive pressure in the horizontal piping, thereby increasing the siphon start time. Furthermore, this is a system to which a check valve function is added so that air during positive pressure escapes from the inside of the pipe and air during negative pressure does not escape.

  As a preferable configuration, a system in which a function of escaping air at a positive pressure in the pipe is added to a position immediately before the horizontal pipe is drooped. And as an example of the function which escapes the air at the time of the positive pressure in piping, it is a valve mechanism or a bag mechanism.

  Hereinafter, the siphon drainage system of the present invention will be described with reference to the drawings. FIG. 2 is an overall view of the system of the present invention, which is a check valve 10 that adds a function of escaping air at the time of positive pressure in the horizontal piping 2. This check valve 10 is provided near the hanging part for the horizontal pulling pipe 2 to join the vertical pipe 4. Reference numerals 1 to 6 are as described in FIG. 1 and are omitted here.

  FIG. 3 is a diagram showing the function of the check valve 10 and shows a state before the siphon is started. The check valve 10 is a valve that is opened to release air (positive pressure) a in the pipe 2 when the inside of the pipe 2 before the siphon is full is filled. As a result, the full water in the pipe 2 is accelerated and the siphon start time is thereby accelerated.

  FIG. 4 is a diagram illustrating a state after the siphon is started. After the siphon is started, the inside of the pipe 2 becomes a negative pressure, and the valve is closed so that air does not enter here, and the mechanism prevents the siphon force from being lowered due to the air entering.

  FIG. 5 is a system including an impermeable bag 11 that adds a function of escaping air at the time of positive pressure in the horizontal pulling pipe 2 according to the second example of the present invention.

  In the system of the present invention, a valve is opened to release air (positive pressure) in the pipe when the pipe before the siphon is full is filled, so that the air in the pipe is released and the pipe is filled with water. This simplifies the siphon start time and prevents the air from entering when negative pressure is reached. The siphon drainage is not intermittent and can be drained smoothly. Therefore, the system of the present invention can be used for all siphon drainage systems.

FIG. 1 is a conceptual diagram showing a conventional siphon drainage system. FIG. 2 is a conceptual diagram showing the siphon drainage system of the present invention. FIG. 3 is a diagram showing the function of the check valve during positive pressure according to the present invention. FIG. 4 is a diagram showing the function of the check valve during negative pressure according to the present invention. FIG. 5 is a conceptual diagram showing a second siphon drainage system of the present invention.

Explanation of symbols

1.
2. Horizontal piping,
3. Floor
4. Stand pipe,
5.
6 ... The hanging part of the horizontal piping,
10 ... Function to escape air at positive pressure (check valve),
11. An impermeable bag that escapes air during positive pressure.

Claims (4)

In the siphon drainage system in which the horizontal pipe and the horizontal pipe are suspended , the air at the positive pressure until the siphon start in the horizontal pipe is released to the position immediately before the horizontal pipe is suspended. The siphon drainage system is characterized by adding a function to enable siphon start time.   The siphon drainage system according to claim 1, further comprising a check valve function that escapes air at the time of positive pressure in the horizontal piping and does not release air at the time of negative pressure. The siphon drainage system according to claim 1, wherein the function of escaping air at a positive pressure in the pipe is a valve mechanism. The siphon drainage system according to claim 1, wherein the function of escaping air during positive pressure in the pipe is a bag mechanism.

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