JPH04101877U - Valve centering and rotation prevention device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide centering and rotation prevention device during valve piping. [Structure] A gland part for attaching the valve shaft is provided so as to be orthogonal to the valve body flow path of the cylindrical valve box, and two bolts are provided so as to contact the outer periphery of this gland part and the lower surface of the gland flange. These bolts clamp and fix the valve box between the piping flanges.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is suitable for butterfly valves and valves that do not have piping flanges on the valve body. This invention relates to centering and anti-rotation devices for pipes.

0002

[Conventional technology]

Conventionally, valve bodies without piping flanges, such as butterfly valves, are attached to piping. To fix the valve body, the valve body is held and fixed by the piping flange. . When installing this piping, if the center of the valve body and piping is misaligned or the valve body rotates, the installation The pipe becomes complicated and also poses a problem in handling. Therefore, make sure to align the center axis. As a conventional example, there is a Japanese Utility Model Application Publication No. 1-36775. An example of clamping a bolt by penetrating it or abutting it on a part or groove is given in Jikkoi 1-4486. There is Publication No. 3.

0003

[Problem that the idea aims to solve]

In the conventional examples mentioned above, a wall is provided around the periphery of the valve body, and a wall is provided for the bolts. By providing through holes and even providing grooves to secure bolts in fixed positions. Therefore, it takes time and money to drill holes, and it is also difficult to create casting molds for manufacturing valve boxes. The problem was that it took a long time to complete the process.

0004 The purpose of this invention is to solve the above-mentioned problems of the conventional method, and to make it extremely easy to connect the piping to the valve body. This makes centering easy and reliable, and prevents rotation of the valve body for stable fixation. The aim is to provide a device that can.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the present invention provides piping installed on the inflow and outflow sides of the fluid. In a valve in which the valve body is clamped and fixed through a flange, the cylindrical valve body A gland section for attaching the valve stem is provided so as to be perpendicular to the valve body flow path, and the outside of this gland section is At least two bolts are connected to the circumference and the bottom surface of the gland flange. as a centering and rotation prevention device for a valve provided between the flanges of the valve body and clamping and fixing the valve box. Ta.

[0006]

[Effect]

In the present invention, a gland section is provided to attach the valve stem so as to be perpendicular to the valve body flow path. At least two bolts are attached to both the outer periphery of the land and the lower surface of the gland flange. Since the bolts are installed between the piping flanges so that they are in contact with each other, the valve box is aligned with the center axis. It is located at the top and has a centering effect. Then, the piping is passed through these bolts. By clamping and fixing the valve body between the flanges, the valve body does not rotate and can be fixed in place. Fixed in position.

[0007]

【Example】

The embodiments shown in the drawings will be described below. In Figures 1 and 2, 1 is a valve box, which is cylindrical and has a valve body flow path 2 in the center. There is. Reference numeral 3 denotes a valve shaft, which is attached to a gland portion 4 orthogonal to the valve body flow path 2. 5 is It is a ground flange. A indicates the central axis of the valve body flow path 2. two bolts 6, 6 is a pipe so as to come into contact with both the outer periphery of the gland portion 4 and the gland flange 5. A nut is installed between flanges 9 and 10 of piping 7 and 8, and a nut is installed between flanges 9 and 10 of piping 7 and 8. 11 and 12 to fix the valve body 1. 13 is set on the lower side. It is fixed between flanges 9 and 10 with nuts 14 and 15 using girder bolts, but the valve body It does not need to be in contact with 1.

[0008] By placing the valve box 1 on the two bolts 6, 6, the central axis of the valve body flow path 2 is aligned. Centering can be done along line A, and it can be tightened and fixed between flanges 9 and 10 of pipes 7 and 8. As a result, the valve body is fixed in alignment with the center position of the piping without rotating.

[0009]

[Effect of the idea]

Since the present invention has the above configuration, the two valves are connected using the ground part of the valve box. The bolt can be installed in a fixed position, the centering effect can be easily obtained, and the hole can be easily drilled. The anti-rotation effect can now be easily obtained without the need for grooves or grooves.

[Brief explanation of drawings]

[Figure 1] Side view showing the main parts of the device of the present invention

[Figure 2] Cross-sectional view of main parts of a valve using the present invention

[Explanation of symbols]

1 Valve box 2 Valve body flow path 3
Valve stem 4 Gland part 5 Gland flange 6
Bolts 7, 8 Piping 9, 10 Piping flange

Claims (1)

[Scope of utility model registration request] Claim 1: In a valve in which a valve box is clamped and fixed via flanges of piping provided on the inflow side and the outflow side of fluid, the valve shaft is arranged so as to be orthogonal to the valve body flow path of the cylindrical valve case. A gland part is provided to which the gland is attached, and at least two
A device for centering and preventing rotation of a valve, characterized in that a bolt is provided between flanges of piping to clamp and fix the valve box.