JPS63158367A - Valve - Google Patents

Abstract

PURPOSE:To facilitate the assembling of a valve disc with a valve stem into a valve case, by installing the valve body whose one side is provided with the valve ster projectingly as one body and the other side with a valve stem hole respectively, and the integral valve case in which a valve stem through hole on one side and a valve stem support hole on the other bath are bored. CONSTITUTION:A valve body 1 in which a valve stem 2 is fixed on one side and a valve stem hole 3 is bored on the other, is constituted of a valve plate 4, plural reinforced ribs 6 and a reinforced plate 7. A valve case 9 is bored with a valve stem through hole 10 on one side and a valve stem support hole 11 on the other, respectively. After the valve stem 2 is inserted into the valve stem through hole 10, a support ring 15 is fitted in the valve stem though hole 10 of the valve case 9. Finally, if the valve stem is inserted into the valve stem hole 3 and fixed therein, the valve 1 is supported inside the valve case 9, thus valve assembly is all over.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to butterfly valves, flow-through valves, rotary valves, etc., which open and close a flow path by rotating a valve body within a valve body around a valve shaft. The present invention relates to the structure of valves, and is particularly suitable for relatively large diameter valves such as Zeiler large mouth valves for power plants and valves for water gates.

[Conventional technology]

Conventional biplane butterfly valves can be roughly divided into the following two types of structures.

First, as shown in FIGS. 14 and 15, the nine-valve body 35
If the valve body 36 is integrated into the valve body 35, it cannot be assembled if the valve body 36 and the valve stem 37 are integrated. The valve stem 37 is inserted into the valve stem hole 38, and the distal end 39 of the valve stem 37 is fitted into the bushing part 40 of the valve body 36. The valve body 36 and the valve shaft 37 are connected by drilling a taper hole passing through the hole, driving the taper pin 41 completely into the hole, and fixing it by welding.
The assembly of the valve is completed by combining the two.

Further, in FIG. 15, 42 is a bushing, 43 is a bushing case, 44 is a bolt, 45 is a packing, 46 is a packing stop, 47 is a push stop, and 48 is a drive arm.

Furthermore, as shown in FIG. 16, there is a valve body 49 that is divided into two parts, in which a valve body 50 and a pair of valve shafts 51 are integrally formed. After assembling the valve body 50 into the valve body 49, the two valve bodies 49 are connected to each other by means of a bolt via the entire flange 52 of the other valve body 49, thereby completing the assembly of the valve. In FIG. 16, 53 is a hole, 54 is a bolt, 55 is an upstream flange, 56 is a downstream flange,
57 is an upstream pipe, 58 is a downstream pipe, and 59 is a valve base.

[Problem that the invention seeks to solve]

The conventional device described above has the following problems.

First, in the valve body 35 shown in FIGS. 14 and 15 in which the valve body 35 is integral and the valve body 36 and the valve stem 37 are separated, (1) a hole passing through the valve body 36 and the valve stem 37; Since they are connected by a tapered pin 41, the cost of machining is high.

(11) After the valve body 36 is inserted into the valve body 35, the two valve shafts 37 are inserted from both sides of the valve body 35, which requires a large amount of assembly man-hours and costs.

In addition, in the case shown in FIG. 16 where the valve body 49 is divided into two parts and the valve body 50 and valve stem 51 are integral, (1) a flange part is required because the valve body 51 is divided; Well, the cost of the valve body 49 is high.

(11) Separate measures to prevent water leakage from the dividing surface of the valve body 49 are required, and there is a concern that water leakage problems may occur depending on the operating conditions.

The valve according to the present invention has been proposed to solve the above-mentioned problems.In the integral valve body, the valve body with a valve stem can be easily assembled into the valve body, and the machining and assembly man-hour costs can be reduced. The purpose of this invention is to provide a valve that does not cause such problems.

[Means for solving problems]

The valve according to the present invention includes a valve body having an integrally protruding valve stem on one side and a valve stem hole on the other side, and an integral body having a valve stem insertion hole on one side and a valve stem support hole on the other side. a support ring that is inserted around the valve shaft of the valve body inserted into the valve shaft insertion hole of the valve body and fixed to the valve body; a valve shaft support hole of the valve body and the valve body; The valve stem is inserted into the valve stem hole and fixed to the valve body.

[Effect]

According to the valve according to the present invention, the valve body is integrally formed and the valve body has a valve shaft fitting integrally formed on one side of the valve body, but the incorporation of the valve body into the valve body requires Since the other valve stem is not provided with a valve stem, it is possible to insert the valve stem formed integrally with one of the valve bodies into the valve stem insertion hole of the valve body. After assembling the valve body into the valve body, the support ring and other valve stems are respectively attached and fixed to the valve body to complete the assembly of the valve.

〔Example〕

Hereinafter, the valve according to the present invention will be explained based on an embodiment of a biplane butterfly valve shown in FIGS. 1 to 13.

1 to 7, 1 is a valve body with a valve shaft 2 fixed by welding on one side and a valve shaft hole 3 bored on the other side, and this valve body 1 has a valve plate 4, a seal It is composed of a ring 5, a plurality of reinforcing lips 6, and a reinforcing plate 7, and a bush 8 is provided in the valve shaft hole 3. Note that the valve shaft 2 of the valve body 1 may be fixed to the valve body 1 by integrally forming the valve body 1 by casting.

Reference numeral 9 denotes a valve body having a valve shaft insertion hole 10 on one side and a valve shaft support hole 11 on the other side.As shown in FIG.
The inner diameter A of the valve stem 2 is larger than the outer diameter B of the valve stem 2, and the valve body 1 is inserted into the valve body 9 in the state shown in FIG.
The built-in features are all possible. Further, as shown in the thirteenth factor, the central axis C of the valve shaft insertion hole 10 is eccentric to the rotation axis of the valve body 1 toward the insertion side of the valve body 9, but this is the same as described above. This is to facilitate the assembly of the valve body 1 into the valve body 9 and to minimize the inner diameter A dimension of the valve shaft insertion hole 10.

Further, as shown in FIG. 1, this valve 1 cavity 9 is provided with an upstream flange 12 and a downstream flange 13, and a ring ring 14 is provided in IM of the downstream flange 13. .

In FIG. 5, reference numeral 15 denotes a support ring that is fitted around the valve stem 2 of the valve body 1 inserted into the valve stem insertion hole 10, and this support ring 15 is fixed to the valve stem support part 16 of the valve body 9 with bolts 17. ing. Further, in FIG. 5, 18 is a packing holder, 19 is a V packing, 20 is a bushing, 21 is a gasket, 22 is a welded portion, and 26 is a bolt. Further, in FIG. 6, E indicates the center of the valve stem 2, and F indicates the center of the valve stem support portion 16.

In FIG. 7, 27 is a valve stem that is inserted into the valve stem hole 3 of the valve body λ from the valve stem support hole 11 of the valve body 9, and is fixed to the valve stem support part 29 of the valve body 9 with a bolt 30. . Further, in the figure, 24 indicates a set screw, and 25 indicates a gasket.

Further, FIG. 8 shows another embodiment corresponding to FIG. 5, and the same reference numerals as in FIG. 5 indicate the same components. In FIG. 8, 31 indicates a portion of a cam link that transmits the torque for fully opening and closing the valve body 1, and 32 indicates a set screw.

Further, FIG. 10 shows another embodiment corresponding to FIG. 7, and in the figure, the same reference numerals as in FIG. 5 indicate the same components.

In FIG. 1O, numeral 33 indicates a bushing case, and numeral 34 indicates a bushing holder.

Next, the entire procedure for assembling the valve according to this embodiment will be explained based on FIG. 1 and FIGS. 11 to 13.

First, as shown in FIG.
Then, the valve stem 2 is inserted into the valve stem insertion hole 10 until it reaches the state shown in FIG. 12, and then the valve body 1 is placed in the valve body 9 to the state shown in FIG. Then, the valve body 1 is rotated completely 180 degrees to bring the valve plate 4 into contact with the downstream flange 13 as shown in FIG. 1, and then the support ring shown in FIG. 15 and fix it, and also fully insert the valve stem 27 shown in FIG. The valve body 1 is supported within, and the assembly of the valve is completed. Note that the valve assembly described above may be performed using the downstream flange 13 of the valve body 9 as a base.

In addition, during normal operation, the valve is opened and closed by hydraulic drive, and rotational torque is transmitted to the valve shaft 2 of the valve body 1 through the link, and the n1 valve body 1 rotates around both valve shafts 2.27i. ,
The valve is opened and closed.

In the present embodiment described above, the valve body 9 is integral, and one of the valve stems 2 is integrally formed with the valve body 1, and the other valve stem 27 is integrally formed with the valve body 1. It is configured to be inserted into the valve stem hole 3 of the body 1, and there is no need to connect the valve body and valve stem with a taper pin as in the conventional integrated valve body type.
Significant cost reductions will be achieved.

In addition, each seal for preventing water leakage from the valve may be a simple ring-shaped seal similar to the conventional integral valve body type, and sealing can be performed more reliably than with the split valve body type.

The diameter of the valve shaft insertion hole is such that it is possible to incorporate the valve body into the valve body, that is, with the valve body in an oblique position.
The size may be such that the valve stem can be inserted into the valve stem insertion hole of the valve body and the valve body can be moved from an oblique position to the rotation axis position of the valve body, such as the embodiment shown in FIG. 13 described above. It is not necessarily necessary to make the center axis Off-center with respect to the rotation axis, and both axes may be coaxial.

〔Effect of the invention〕

According to the valve according to the present invention, although the valve body is integral, the connection between the valve body and one valve shaft is not a pin connection as in the past, but is integrally formed, and The shaft only needs to be inserted into the valve shaft hole of the valve body, and there is no need to drill a pin hole and drive a pin as in the conventional method, so machining and assembly man-hour costs can be significantly reduced compared to the conventional method. There is.

[Brief explanation of the drawing]

Figures 1 to 13 show an embodiment of the square according to the present invention, Figure 1 is a plan view, Figure 2 is a front view, Figure 3 is a perspective view of the valve body, and Figure 4 is a valve valve body. 5 is a detailed sectional view of the driven valve shaft side, FIG. 6 is a sectional view taken along the line Vl-Vl in FIG. 5, FIG. 7 is a detailed sectional view of the non-driven valve shaft side, and FIG. The figure is a sectional view of another embodiment corresponding to Fig. 5, and Fig. 9 is a sectional view of f in Fig. 8.
Fig. 10 is a sectional view of another embodiment corresponding to Fig. 7, and Figs. 11, 12, and 13 are explanatory diagrams showing the procedure for assembling the valve. Figures 14 to 16 show conventional valves.
FIG. 4 is a front view of a biplane butterfly valve, FIG. 15 is a cross-sectional view of the valve stem of a one-piece valve body type, and FIG. 16 is a longitudinal cross-sectional view of a two-piece valve body type. 1... Valve body, 2... Valve stem, 3... Valve stem hole, 9...
・Valve body, 10... Valve stem insertion hole, 11... Valve stem support hole, 15... Figure 1 Figure 2 Figure 30 Figure 6 Figure 7

Claims (1)

[Claims] A valve body with a valve stem integrally protruding on one side and a valve stem hole on the other, an integrated valve body with a valve stem insertion hole on one side and a valve stem support hole on the other. a support ring that is inserted into the valve stem insertion hole of the valve body and is fitted around the valve stem of the valve body and fixed to the valve body; and a support ring that is inserted into the valve stem support hole of the valve body and the valve stem hole of the valve body. and a valve stem fixed to the valve body.