JPH07224955A - Pipeline change-over valve - Google Patents

Abstract

PURPOSE:To offer a pipeline change-over valve capable of changing over two pipeline laid in parallel with a minimum installation space through less labor valve operation. CONSTITUTION:This valve is provided with an approximately circular shaped valve box centering the axis, four pipeline connecting openings 14, 15, 16, 17 connected to respective pipelines and provided in four way position on the outside circumference of a space inside the valve box 13, and a valve element 19 which is arranged freely rotatably centering the axis inside the valve box 13 and communicating mutually adjacent pipeline openings 14, 15, 16, 17 with each other, which is made by partitioning the space inside the valve box 13 into two when its both ends take an attitude of being in line with the valve box inner wall surface 13a. Also, it is provided with a through-hole 20 which is formed by perforating the valve element 19 and makes opposing pipeline connecting openings 14, 15, 16, 17 to communicate with each other when both ends of the valve element 19 take an attitude of being in line with pipeline connecting openings 14, 15, 16, 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipeline switching valve for switching pipelines arranged in two lines.

[0002]

2. Description of the Related Art In a sewage pumping pipeline, in order to facilitate maintenance, as shown in FIG.
The connecting pipes 3 and 4 are provided between the two, and the flow in the pipe lines 1 and 2 is switched by opening and closing the valves 5 to 14.

Five valves 5 to 9 and 10 to 14 are provided around the connecting pipes 3 and 4, respectively.
In the normal case of using the sides (lines 1a, 1b, 1c), the valves 5, 6, 8, 9, 10, 11, 13, 14 are opened and the valves 7, 12 are closed. In this state, in parallel with the pipeline 1, the pipeline 2 (pipes 2a, 2b, 2
It is also possible to use c).

Then, for example, when the pipeline 1b in the middle of the pipeline 1 is made in a non-conductive state for construction or the like, and the pipelines 1a, 2b and 1c are communicated as indicated by an arrow in FIG. The valves 5, 7, 9, 11, 12, 13
Open and close valves 6, 8, 10, 14.

[0005]

However, in the above conventional pipe line switching system, at least five valves 5-9, 10-14 are required around each connecting pipe 3, 4, and therefore,
It was sometimes difficult to secure the installation space. Further, switching of the pipelines 1 and 2 requires operation of valves at three locations around the connecting pipes 3 and 4, which requires a great deal of time and labor.

The present invention solves the above-mentioned problems.
It is an object of the present invention to provide a pipeline switching valve that does not make it difficult to secure an installation space or require a large amount of valve operation in a system that switches pipelines that are arranged in parallel with each other. is there.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is a pipe line switching valve for switching pipe lines arranged in two lines, the internal cross section of which is centered around a predetermined axis. A valve box formed in a substantially circular shape, and four conduit connection ports that are respectively connected to the respective conduits and that are provided at four positions on the outer periphery of the inner space of the valve box, with two points facing each other around the axis. , Is rotatably arranged around the axis in the valve box, and when both ends are in a posture along the inner wall surface of the valve box, the inner space of the valve box is divided into two and the adjacent pipe line connection ports are communicated with each other. And a through hole that is formed to penetrate the valve body and that communicates the mutually facing pipeline connection ports when both ends of the valve body are in a posture along the pipeline connection port. It is a thing.

[0008]

In the above structure, the valve body is positioned such that both ends thereof are along the inner wall surface of the valve box.
Adjacent conduit connection ports are communicated with each other, and by arranging both ends so as to be in a posture along the conduit connection ports, the conduit connection ports at the positions where both ends of the valve body are aligned are through holes. Be communicated through. Accordingly, the flow direction of the pipelines arranged in parallel in two lines can be switched by the single pipeline switching valve.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same functions as those of the conventional one are designated by the same reference numerals.

In FIG. 3, reference numerals 1 and 2 denote pipes arranged in parallel in two lines, and in the middle of these, that is, between the pipes 1a and 2a and the pipes 1b and 2b, and between the pipes 1b and 2b and the pipes. Road 1c, 2
One for the line switching valve 11 and one for the line c
12 are provided.

The pipe line switching valves 11 and 12 have a flat cylindrical valve box 13 having a substantially circular internal cross section centered around a predetermined axis Z, and the pipe lines 1a, 1b, 2a and 2b.
(1b, 1c, 2b, 2c), each of which is provided at four outer peripheral positions of the inner space of the valve box 13 at substantially 90 ° intervals in the circumferential direction about the axis Z and at two opposite positions. The pipe connection ports 14, 15, 16 and 17, and a rectangular columnar valve body 19 rotatably arranged in the valve box 13 around a rotary shaft 18 passing through the axis Z, and the valve body 19
And a through hole 20 having a flow passage cross-sectional area substantially the same as that of the conduits 1 and 2. The rotary shaft 18 to which the valve body 19 is attached is rotatably supported, and is rotated at the other end by an operation handle 22 via an interlocking mechanism 21 such as a bevel gear.

In the usual case where the pipeline 1 side (pipes 1a, 1b, 1c) is used, the valve bodies 19 of the pipeline switching valves 11 and 12 are provided at both ends thereof as shown in FIG. Is the valve box 13
The inner wall surface 13a of the above is used. As a result, the valve body 19
The space inside the valve box 13 is divided into two by this, and the valve body 1
The pipe line connection ports 14 and 16 and the pipe line connection ports 15 and 17 are independently communicated with each other through a space in the valve box 13 partitioned by 9. In this state, since the pipeline connection ports 15 and 17 are also communicated with each other, the pipeline 2 (pipes 2a, 2b and 2c) can be used in parallel with the pipeline 1.

On the other hand, when the pipeline 1b in the middle of the pipeline 1 is made in a non-conductive state for construction or the like and the pipelines 1a, 2b and 1c are communicated with each other as shown by an arrow in FIG. As shown in FIG. 5, the both ends of the valve body 19 of the upstream side pipe line switching valve 11 are rotated along the pipe line connection ports 14 and 17, and the downstream side pipe line switching valve 11 is rotated. 12 valve bodies 19 having both ends connected to the pipe connection ports 15,
Rotate to a posture along 16. As a result, the pipeline 1a and the pipeline 2b communicate with each other via the through hole 20 of the valve body 19 of the pipeline switching valve 11, and the pipeline 2b and the pipeline 1c communicate with each other. The valve body 19 communicates with each other through a through hole 20. In this case, the pipe 2a and the pipe 1b, and the pipe 1b and the pipe 2c are closed by the valve bodies 19 blocking their flow passages.

When it is desired to make the pipeline 2a, the pipeline 1b, and the pipeline 2c communicate with each other by making the pipeline 2b in the middle of the pipeline 2 in a non-conductive state for construction or the like, each pipeline switching valve. 1
1, 12 valve elements 19 in the opposite direction (both ends of the valve element 19 of the upstream side conduit switching valve 11 are along the conduit connection ports 15 and 16 and the valve element 19 of the downstream side conduit switching valve 12). It is sufficient to switch the both ends to the postures along the pipe connection ports 14 and 17.

In this way, the pipe lines 1 and 2 arranged in parallel in two lines
One line switching valve 11, 1
2, the installation space for the pipe line switching valves 11 and 12 can be minimized. Further, by switching the valve element 19 having the through hole 20 in three directions, it is possible to easily switch the flow of the pipeline without labor and time.

In the above embodiment, the case where the pipe wall portions of the valve box 13 and the pipe line connection ports 14, 15, 16 and 17 are integrally formed is shown, but they are formed separately. The pipe portions of the pipe connection ports 14, 15, 16, 17 may be attached to the valve box 13 later. Further, the interlocking mechanism 21 for interlocking the valve body 19 with the operation handle 22 is not limited to a gear mechanism or the like, and various mechanisms may be used.
Further, the operation handle 22 may be directly attached to the rotary shaft 18 without providing an interlocking mechanism or the like. Further, in the above-mentioned embodiment, the case where the pipe line switching valves 11 and 12 are provided at two places on the way of the pipe lines 1 and 2 has been described, but the pipe line switching valves are provided only at one place, or at three or more places. It is needless to say that the pipes can be provided and the pipes can be switched only by each pipe switching valve.

[0017]

As described above, according to the present invention, a valve box having an inner cross-sectional shape formed into a substantially circular shape around a predetermined axis line and the respective pipe lines are connected to the valve box internal space. 4 pipe connection ports provided at four positions on the outer periphery of the valve 4 facing each other about the axis and rotatably about the axis inside the valve box, and both ends are inside the valve box. A valve body that divides the inner space of the valve box into two in a posture along a wall surface and connects adjacent pipe line connection ports to each other, and both end portions of the valve body are formed so as to penetrate the valve body. By providing a through-hole for communicating the mutually facing pipe line connection ports in the posture along the pipe line connection port, the pipe lines are switched in parallel by two pipe lines, one by one. It can be performed in a centralized manner by using the valve for piping, and the installation space of the valve for switching the pipeline can be minimized. Rukoto can. Further, by switching the valve element having the through hole in three directions, it is possible to easily switch the flow of the pipeline without taking time and labor.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a conduit switching valve according to an embodiment of the present invention.

FIG. 2 is a side sectional view taken along the line II-II in FIG.

FIG. 3 is a diagram schematically showing a pipeline switching system using the pipeline switching valve.

FIG. 4 is a partially cutaway plan view of the conduit switching valve and a portion in the vicinity thereof.

FIG. 5 is a partially cutaway plan view of the conduit switching valve and a portion in the vicinity thereof.

FIG. 6 is a diagram schematically showing a conventional pipeline switching system using a pipeline switching valve.

[Explanation of symbols]

1, 1a, 1b, 1c, 2, 2a, 2b, 2c Pipe line 11, 12 Pipe line switching valve 13 Valve box 14, 15, 16, 17 Pipe line connection port 19 Valve body 20 Through hole

Claims (1)

[Claims] 1. A pipe line switching valve for switching pipe lines arranged in parallel in two lines, wherein a valve box having an internal cross-sectional shape formed in a substantially circular shape around a predetermined axis, and each pipe line. Four pipe connection ports that are connected to each other and are provided at four positions on the outer periphery of the inner space of the valve box, where the two points are opposed to each other about the axis, and are rotatably arranged around the axis in the valve box. And a valve body that divides the inner space of the valve box into two when the both ends are in a posture along the inner wall surface of the valve box and communicates mutually adjacent pipe line connection ports with each other. And a through hole that allows the opposite pipe connection ports to communicate with each other when both ends of the valve body are in a posture along the pipe connection port.