JP3779213B2 - Valve housing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention can prevent the rotation of the lower frame when the outer cylinder or the inner cylinder is rotated to adjust the height of the valve casing, in particular, the valve casing. The present invention relates to a valve casing that can be divided and assembled with a cylinder or an inner cylinder, and can be constructed more easily than a valve casing in which a lower frame, an outer cylinder, and an inner cylinder are integrated.
[0002]
[Prior art]
Conventionally, as a valve housing for embedding a gate valve, a waterstop, etc. in the ground, there is one disclosed in Japanese Utility Model Publication No. 57-16930.
[0003]
As shown in FIG. 6, this conventional valve housing is individually made with a lower frame 1, an outer cylinder 2 formed with an internal thread 4, and an inner cylinder 3 formed with an external thread 5 that meshes with the internal thread 4. A flange 2A that is fixed to the lower frame 1 is formed at one end of the inner cylinder 3, and a flange 3A that is fixed to the lower frame 1 is formed at the other end of the inner cylinder 3. Then, as shown in FIG. 7, when the inner cylinder 3 is moved up and down with respect to the outer cylinder 2, the flange 2 </ b> A of the outer cylinder 2 is fixed to the lower frame 1, and the inner cylinder 2 is placed inside the outer cylinder 2. The inner cylinder 3 is screwed. On the other hand, as shown in FIG. 8, when the outer cylinder 2 is moved up and down with respect to the inner cylinder 3, the inner cylinder 3 is turned upside down and the flange 3 </ b> A of the inner cylinder 3 is fixed to the lower frame 1. Then, the outer cylinder 2 is screwed onto the outer side of the inner cylinder 3.
[0004]
In this way, a set of valve housings can be used for both externally threaded and internally threaded valve housings. A useful effect is achieved in that it is not necessary to provide a separate manufacturing facility for the valve housing.
[0005]
[Problems to be solved by the invention]
However, the conventional valve housing has the following problems.
[0006]
(1) After adjusting the valve casing, for example, when adjusting the height of the valve casing by floating the road surface due to freezing or the like, the inner cylinder 3 is rotated in the inner screw type valve casing, and the outer cylinder 2 in the outer screw type valve casing. Turning the. However, as a result of a long period of time, in the internal thread type valve housing, due to rusting of the internal thread 4 and the external thread 5, freezing of intrusion water into both threaded parts, etc., and in the external threading type valve casing, this rusting and In some cases, the lower frame 1 rotates together due to the frictional resistance between the outer cylinder 2 and the surrounding soil as the intrusion water enters the threaded portion and the height of the valve casing cannot be adjusted smoothly.
[0007]
(2) On the factory side, the lower frame 1 and the outer cylinder 2 or the inner cylinder 3 are respectively divided, but the valve casing is located at the construction site regardless of the inner screw type or the outer screw type. The frame 1 and the outer cylinder 2 or the inner cylinder 3 are integrated, and cannot be divided and assembled at the construction site. Since the entire weight of the valve casing reaches several tens of kilometres, construction work with narrow vertical holes has been a heavy labor involving danger.
[0008]
Therefore, an object of the present invention is to prevent the lower frame from rotating together when the outer cylinder or the inner cylinder is rotated for adjusting the height of the valve casing, and the lower frame and the outer cylinder at the construction site. Another object of the present invention is to provide a valve housing that can be divided and assembled with an inner cylinder and can be easily constructed as compared with a valve housing in which a lower frame, an outer cylinder, and an inner cylinder are integrated.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a lower frame, an outer cylinder that is detachably mounted on the lower frame via a fixing means, and an inner that is openable and closable by a lid that is screwed up and down inside the outer cylinder. And a flange formed on the lower portion of the outer cylinder, and a rib for preventing co-rotation is formed on the lower frame.The fixing means is formed on the upper surface of the lower frame. Further, a U-shaped receiving part into which a part of the flange of the outer cylinder is inserted, and a fastening means for fixing the flange on the side facing the part of the flange inserted into the receiving part to the lower frame. The fastening means is characterized in that it comprises a male screw fixed to the lower frame and a manually tightened eye nut screwed into the male screw via a pressing plate .
[0010]
According to a second aspect of the present invention, there is provided a lower frame, an inner cylinder that is detachably mounted on the lower frame via a fixing means, and an outer that can be opened and closed by a lid that is screwed up and down to the outside of the inner cylinder. And a flange formed on the lower portion of the inner cylinder, and a co-rotation preventing rib formed on the lower frame. The fixing means is formed on the upper surface of the lower frame. Further, a U-shaped receiving part into which a part of the flange of the inner cylinder is inserted, and a fastening means for fixing the flange on the side facing the part of the flange inserted into the receiving part to the lower frame. The fastening means is characterized in that it comprises a male screw fixed to the lower frame and a manually tightened eye nut screwed into the male screw via a pressing plate.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the valve housing of the present invention will be described with reference to the drawings.
[0015]
1 is a plan view showing the valve casing of the present invention, FIG. 2 is a cross-sectional view showing the valve casing of the present invention, FIG. 3 is a plan view showing a pressing plate, and FIG. 4 is an outer cylinder on the lower frame. FIG. 5 is a cross-sectional view showing a state where the flange of the outer cylinder is inserted into the receiving portion of the lower frame.
[0016]
1 to 5, reference numeral 1 denotes a lower frame, and a plurality of co-rotation preventing ribs 1A are formed around the periphery. Reference numeral 2 denotes an outer cylinder in which an internal thread 4 is formed, and a flange 8 is formed at the lower end. 3 is an inner cylinder in which a male screw 5 (in this example, the male screw 5 is formed only in the lower part), 6 is a cover of the inner cylinder 3, and is connected to the inner cylinder 3 by a chain 7. Yes. Reference numeral 9 denotes fixing means for detachably attaching the outer cylinder 2 on the lower frame 1.
[0017]
The fixing means 9 includes an inverted L-shaped receiving portion 1B formed on the upper surface of the lower frame 1 into which the portion 8A of the flange 8 of the outer cylinder 2 is inserted, and a portion of the flange 8 that is inserted into the receiving portion 1B. It comprises fastening means 10 for fixing the flange 8B on the side facing 8A to the lower frame 1.
[0018]
The tightening means 10 includes a bolt 12 fixed to the lower frame 1 with a nut 11 vertically upward, and an eye nut 14 screwed into the bolt 12 via a holding plate 13. As shown in FIG. 3, the presser plate 13 has an insertion long hole 13 </ b> A for the bolt 12. The reason for the eyenut 14 is that it can be tightened by hand other than the tool and can be suspended by a heavy machine.
[0019]
The valve casing of the present invention configured as described above is constructed as follows.
[0020]
As shown in FIG. 4, when the lower frame 1 is placed on a pedestal (not shown) on the valve of the pipeline, the outer cylinder 2 into which the inner cylinder 3 is inserted is placed on the lower frame 1. Next, as shown in FIG. 5, the flange 8A of the outer cylinder 2 is inserted into the receiving portion 1B. At this time, the pressing plate 13 is moved outward so as not to interfere with the flange 8 </ b> B of the outer cylinder 2. When the outer cylinder 2 is placed vertically on the lower frame 1 in this way, the pressing plate 13 is moved inward and the eye nut 14 is tightened. As a result, the flange 8B of the outer cylinder 2 is tightened by the eye nut 14 via the pressing plate 13. As a result, the outer cylinder 2 is fixed vertically on the lower frame 1 together with the inner cylinder 3.
[0021]
When the inner cylinder 3 is turned when the inner cylinder 3 is moved up and down after the valve casing is constructed, for example, the female screw 4 of the outer cylinder 2 and the male screw 5 of the inner cylinder 3 are rusted or freezing water intruding into both screw parts. Even if it is difficult to turn, the lower frame 1 does not rotate together because the rib 1A of the lower frame 1 bites into the surrounding soil.
[0022]
Moreover, since the lower frame 1 and the outer cylinder 2 into which the inner cylinder 3 is inserted can be divided and assembled at the construction site by the fixing means 9, they can be separately carried into the vertical holes at the time of construction. Therefore, compared with a valve housing in which the lower frame 1 and the outer cylinder 2 are integrated, the construction of the valve housing at the construction site can be performed easily.
[0023]
The above is the case of the inner screw type valve housing in which the inner cylinder 3 is raised and lowered, but it goes without saying that the present invention can be applied to the case of the outer screw type valve housing in which the outer cylinder 2 is raised and lowered. In this case, a flange fixed by the fixing means 9 is formed at the lower end of the inner cylinder 3.
[0024]
【The invention's effect】
As described above, according to the present invention, it is possible to reliably prevent the lower frame from co-rotating by forming the rib on the lower frame, and to fix the lower frame and the outer cylinder or the inner cylinder by the fixing means. By dividing, the lower frame and outer cylinder or inner cylinder can be separately carried into the construction vertical hole at the construction site, so compared to the valve housing in which the lower frame and outer cylinder or inner cylinder are integrated, A useful effect is provided such that the valve housing can be easily constructed.
[Brief description of the drawings]
FIG. 1 is a plan view showing a valve housing of the present invention.
FIG. 2 is a cross-sectional view showing a valve housing of the present invention.
FIG. 3 is a plan view showing a pressing plate.
FIG. 4 is a cross-sectional view showing a state where an outer cylinder is placed on a lower frame.
FIG. 5 is a cross-sectional view showing a state in which the flange of the outer cylinder is inserted into the receiving portion of the lower frame.
FIG. 6 is a cross-sectional view showing a conventional valve housing.
FIG. 7 is a cross-sectional view showing an internal thread type valve housing.
FIG. 8 is a cross-sectional view showing an external thread type valve housing.
[Explanation of symbols]
1: lower frame 1A: rib 1B: receiving portion 2: outer cylinder 3: inner cylinder 4: female screw 5: male screw 6: lid 7: chain 8: flange 8A: flange part 8B: flange 9 facing 8A: fixed Means 10: Tightening means 11: Nut 12: Bolt 13: Holding plate 13A: Bolt hole 14: Eye nut

Claims (2)

A lower frame; an outer cylinder that is detachably mounted on the lower frame via a fixing means; and an inner cylinder that is detachably screwed inside the outer cylinder and that can be opened and closed by a lid. In the valve housing in which a flange is formed in the lower part, and a rib for preventing co-rotation is formed in the lower frame ,
The fixing means is opposed to a U-shaped receiving portion into which a part of the flange of the outer cylinder is inserted, and a part of the flange to be inserted into the receiving portion, formed on the upper surface of the lower frame. A fastening means for fastening the flange on the side to the lower frame, the fastening means comprising: a male screw fixed to the lower frame; and a manually tightened eye nut screwed into the male screw via a holding plate; valve housing, characterized in that it consists of. A lower frame; an inner cylinder that is detachably mounted on the lower frame via a fixing means; and an outer cylinder that is screwed up and down to the outside of the inner cylinder and that can be opened and closed by a lid. In the valve housing in which a flange is formed in the lower part, and a rib for preventing co-rotation is formed in the lower frame,
The fixing means faces a U-shaped receiving portion into which a part of the flange of the inner cylinder is inserted, and a part of the flange to be inserted into the receiving portion, formed on the upper surface of the lower frame. A fastening means for fastening the flange on the side to the lower frame, the fastening means comprising: a male screw fixed to the lower frame; and a manually tightened eye nut screwed into the male screw via a holding plate; A valve housing characterized by comprising:

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