JPS6025673B2 - spherical valve device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to a spherical valve device, and its purpose is to make the overall shape as small as possible without impairing the flow function due to fluid flow resistance.

Conventionally, spherical valve devices for switching the flow direction of fluid by operating a handle are known, but all of them have a basic shape of a regular hexahedron with square faces circumscribed by a circle corresponding to the required diameter, and each of the six faces is formed It is composed of a spherical valve whose minimum shape is a sphere that includes all the circles that are formed, and a valve crab that rotatably houses this spherical valve, and inside the spherical valve there is a valve that is bent in a right angle direction with the circle as a cross-sectional shape. A flow path is provided, and the valve cage is provided with an inlet facing one end of the flow path and a plurality of outlet ports selectively facing the pond ends of the flow path. However, the conventional spherical valve device has a configuration in which the basic shape of the spherical valve is a regular hexahedron.
When the upper surface is the inlet and the peripheral surface perpendicular to it is the outlet, the lower surface opposite to the inlet is a completely wasted part, which increases the overall length and the bending angle of the flow path. Since it is formed at right angles, it has defects such as increased flow resistance.

Therefore, the present application is an attempt to improve such defects, and its gist is that the basic shape is a regular tetrahedron with regular triangular faces inscribed with a circle of a required diameter, and that all the circles formed on each of its four faces are and an outer weight in which the spherical valve is placed so as to rotate about a straight line connecting the center of the one circle and the center of the spherical body, A flow path is provided that connects the one circle and the other circle, and the outer lotus has an inlet facing the one circle and selectively facing the other circle. It is provided with a plurality of outflow ports.

That is, to explain this in detail below with reference to the drawings, Figure 1A shows one surface of an equilateral triangle that circumscribes a circle with the required diameter ○, and the opening of the same figure shows the four surfaces a, . a
4 is a side view of a regular tetrahedron, that is, a regular triangular pyramid p, and C is a plan view thereof, and b to b4 are circles with a required diameter D inscribed in each of the surfaces. .

In Figure 1A, the center of the circle inscribed in one equilateral triangle is located 2/3 days from the vertex of the equilateral triangle (H' is the height of the equilateral triangle), and The center of gravity o of the equilateral triangular pyramid p is located at a position 3/4 of the height h of the equilateral triangular pyramid p from its apex, as shown at the opening in the figure.

Therefore, the height h of the equilateral triangular pyramid p is h=ノ(cloud D)2−(number)
2: Since it is represented by a fox, the center of gravity o is at the angle D from the bottom.

Therefore, each circle q to b4 has four sides a of an equilateral triangle,
Since it inscribes circles b to a4, each circle b to b4
If we consider the points of contact on each surface with , as is clear from Figure 1C, on the bottom surface there are three points, U, V, and W, and on the edge of the equilateral triangular pyramid p, there are points on X, Y, and Z. There are three points, and when these three points X, Y, and Z are projected onto the bottom surface, all points U to Z are located on the same circle as shown in A in the figure.

Therefore, as shown at the beginning of the figure, the height h' from the bottom to point Y (this height is the same for other points x and Z)
is expressed as h'=D, so the line L connecting the point U to the center of gravity O and the tangent point Y of the circle on the slope of the object is M(D)2 = Biju: ・ji to L = Yahiro D ・・・・・・・Represented by ■,
Since the length of L has the property of a line that passes through all the contact points U to Z, L=1.5D corresponds to the diameter of the minimum sphere required in this application.

On the other hand, in a conventional regular hexahedron consisting of a circle with diameter D and a square surface circumscribing it, the diameter L of the smallest sphere that includes all the circles inscribed on each face of the regular hexahedron is: 2D, and if we calculate the ratio between the straight 2D of a sphere whose basic shape is a regular hexahedron and the diameter 1.5D of a sphere whose basic shape is a regular tetrahedron in this application, we get 86 in the case of this application.
．． It will be reduced to 6%.

By the way, the above formula (■) shows the diameter of a sphere in the case of assuming a minimum sphere in which the circles located on each side a, a to a4 of a regular tetrahedron to b4 are closely spaced with each other. However, in practice, a space between the circles is required to form a flow path, so the diameter of the length sphere corresponding to the space becomes large.

This means that even in the case of L = 2D, which is the minimum diameter of a sphere whose basic shape is a regular hexahedron, the ratio of the diameter of the sphere mentioned earlier does not change because it is the same aircraft. FIG. 2 is a sectional view of a sphere 2, which forms the basis of a sphere valve including the above-mentioned clearance 1, in which a flow passage 3 having a required diameter D and communicating from one surface to another is provided. , the bending angle is set to about 110 degrees for the reasons described below.

That is, in Figure 1, the aperture q drawn on the bottom surface a,
The center of is at point f, and the center of aperture 0 drawn on one slope a4 is at point e, which passes through the center of gravity o and is perpendicular to the slope a4.

However, if the flow passage 3 is now formed from diameter 0 to b4, its bending angle is triangle U○f and triangle U
Since ○e is congruent, it is shown as twice the angle Q. Therefore, when calculating the angle Q, rigidity = 2D / No. = Ax =.

-707 (8' angle U○f), and tano. 707 is 35o15 from the trigonometric table
Therefore, the angle Q is 90o-35015=54045.

Therefore, the bending angle of the flow path 3 is 2×(54.45)=
109030 and is set to approximately 110 degrees.

3 to 7 show the specific structure of the spherical valve device of the present application, and 4 is a spherical valve constructed based on the spherical body 2 shown in FIG. Similarly, a flow passage 5 is provided whose bending angle is set to 110 degrees, and whose one end serves as an inlet 5a and the other end serves as an outlet 5b.

The spherical valve 4 has an inlet port 7 via a step 6 provided on its outer periphery.
is provided extending upward, and on the lower surface there is a tongue 8 whose center point is on a vertical line M connecting the center of the inlet port 7 and the center ○ of the spherical portion 4' of the spherical valve. It is installed in one piece. Reference numeral 9 denotes a valve weight that surrounds the spherical part 4' of the spherical valve 4 and has a shaft bearing part 10 for receiving the protruding shaft 8 on its lower surface, and the spherical valve 4 has a vertical line M on its peripheral surface. A plurality of closing portions are provided that selectively fit into the outlet 5b when rotated about the axis.

Since the spherical valve 4 is based on the spherical body 2 that includes all of the circles Q to b4 located on each side a to a4 of a regular tetrahedron, the valve weight 9 surrounding the spherical valve 4 also includes each of the circles q. A total of four checkpoints can be opened at positions facing b4 to b4, respectively. When one of the checkpoints is used as an inlet, the other three closing parts serve as outflow ports, and in most cases a four-way valve device can be configured, but in this embodiment, a three-way valve device is constructed. Therefore, the valve lotus 9 has a first closing part 11 on the upper surface of which the inflow port part 7 is located inside, and the valve part 9 has a first closing part 11 located inside the inlet part 7, and when the spherical valve 4 rotates 120 degrees, the flow of the flow path 3 is closed. Exit 5b
and second and third openings 12 and 12' for selective passage are opened, respectively. 13 has the inlet port 7 in the center.
The inflow side comprises a mounting plate 15 having a hole 14 equal to the inner diameter of the inlet, a cylindrical body 16 that aligns with the outer periphery of the inlet port 7, and a flange 17 provided horizontally on the lower side of the outer periphery. The support member includes a circumferential groove 19 along the circumference of the cylindrical body 16 that allows rotation of a handle 18 that extends outward and has one end attached to the inlet port 7; A pair of stopper mechanisms 20, 20' are provided to maintain the 120 degree rotated state.

The stopper mechanisms 20, 20' are provided within a cylindrical portion 21 that protrudes outward and is provided on the cylindrical body 16 at right angles to the center of the ball.
A ball 22, a spring 23, and a set screw 24 are housed inside, and recesses 25 are formed at 120 degree angle positions on the outer periphery of the inflow port 7 to respectively connect the balls 22. And the collar 1 of the support member 13 configured in this way
7, the collar 26 provided on the outer periphery of the upper end of the outer cliff 9 has a set screw 2.
7, it is integrally attached. Reference numerals 28 and 28' denote outflow pipes connected to the second and third entrances 12 and 12', respectively, opened in the outer wall 9, and one end of which is attached to the second and third openings 12 and 12'. A flange 29 and a horizontal mounting board 30 are integrally provided at the other end, and the flange 29 is attached to the second and third closing portions 12 and 12' by set screws 31, respectively.

32 is a packing attached to the inner peripheral surfaces of the second and third closing parts 12 and 12', respectively, and is in close contact with the outer circumferential green of the outlet 5b of the spherical valve 4; 33 is the packing 32 and the outlet pipes 28, 28; ' This is an adjustment ring interposed between the upper collar 29 and the upper collar 29. However, in the states shown in Figures 5 and 6,
The flow passage 5 of the spherical valve 4 communicates with one outflow pipe 28, and fluid is guided from the inflow port 7 to the outflow pipe 28, and this state is maintained by one stopper mechanism 20.

Next, when the handle 18 is rotated 120 degrees along the circumferential groove 19, the spherical valve 4 rotates horizontally about the vertical line M, and the flow passage 5 of the spherical valve 4 communicates with the other outflow pipe 28', and this state is held by the other stopper mechanism 20'. As detailed above, according to the present application, the overall shape can be made smaller than the conventional spherical valve device, and it can be easily installed in a place with a low installation volume, especially a low height, and the flow angle is obtuse. This has the advantage of reducing flow resistance.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is an explanatory diagram of the basic principle, FIG. 2 is a sectional view showing the basic shape of the spherical valve, FIG. 3 is an overall plan view, and FIG. 4 is a front view of the same. FIG. 5 is a plan view of the half-cut state, FIG. 6 is a sectional view taken along line 1-1 in FIG. 3, and FIG. 7 is a partial sectional view of the stopper mechanism. In the figure, p is a regular tetrahedron, a, to a4 are regular triangular faces,
0 to b4 are circles with required diameters, 2 is a sphere, 4 is a spherical valve, 4' is a spherical part, 5a is an inlet, 5b is an outlet, 7 is an inlet, 8 is a protruding shaft, and 9 is a valve sparrow. , l0 is the shaft bearing part, 11,1
2, 12' are entrance parts, 13 is a support member, 18 is a handle, 19 is a circumferential groove, 20, 20' is a stopper mechanism, 28,
28' is an outflow pipe. Traditional 1 Face Figure 2 Figure 3 Figure 7 Surprising Figure Figure 6 Foundation S Figure

Claims (1)

[Scope of Claims] 1. A spherical valve consisting of a sphere that is based on a regular tetrahedron having equilateral triangular faces in which a circle of a required diameter is inscribed, and that includes all the circles formed on each of its four faces, and said one circle. and an outer casing that inscribes the spherical valve so as to rotate about a straight line connecting the center of the sphere and the center of the spherical body, and inside the spherical valve,
A flow passage communicating between the one circle and another circle is provided, and the outer casing includes an inlet facing the one circle and a plurality of channels selectively facing the other circle. A spherical valve device comprising an outflow port. 2. The spherical valve device according to claim 1, comprising at least two outflow ports. 3. The spherical valve device according to claim 1 or 2, wherein the bending angle of the flow path is set to 110 degrees. 4. The spherical valve device according to claim 1, 2, or 3, wherein the rotation switching angle of the spherical valve is set to 120 degrees.