JPS5934913B2 - valve device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a valve device having a rigid hinge structure, which is mainly used in a pump for transporting a solid-liquid multiphase fluid such as fresh concrete or slurry.

Ball valves, which have a valve seat in the center of the pipeline and a ball that opens and closes the valve seat, are used in pipelines for transporting so-called solid-liquid mixed phase fluids such as ready-mixed concrete, slurry, sludge, and pulp. .

Since this ball valve has a ball in its center, the cross-sectional area and shape of the flow passage change significantly along the streamline in the valve part, and the flow direction also changes as well, resulting in a large flow resistance. .

A valve device that does not significantly change the flow direction by having a ball-like member in the center of the flow path is a flexible valve body that is divided radially from the center and a rigid valve support body that is installed in parallel. A special valve with a pressure-resistant function (U.S. Patent No. 282281)
No. 9), but this is a valve for blood flow, and the flexible valve body does not function properly in solid-liquid mixed phase fluids such as fresh concrete, and there is a possibility that there is a problem between the valve body and the valve support. It cannot be used because the solid particles tend to get trapped and the valve support becomes a major hindrance to the flow of the solid-liquid multiphase fluid.

The present invention provides a valve device that can substantially increase the opening area during the flow of the fluid to be transported, and can reduce the flow resistance by making a small change in the flow direction of the fluid to be transported. The purpose is to

In order to achieve the above object, the present invention provides: (1) A pair of semi-annular members made of a rigid body equipped with a bearing and a pivot are formed in the communication hole of the valve body, with a rectangular transparent hole in the center, and the above-mentioned bearing is installed. The bearing of the valve box is fitted into the hole, and the pivot is inserted into the shaft hole of the bearing, and the bearing is mounted so as to cross the flow hole while being rotatably connected to each other at one diagonal position of the through hole. ■ On the two mutually adjacent sides forming the through-hole of the above-mentioned pair of semi-annular members, the hinge connecting portion is approximately aligned with the diagonal line of the through-hole, and the mouth edge is aligned with the other diagonal line of the through-hole. A pair of bendable on-off valves made of rigid bodies are attached with hinge pins so as to be almost coincident with each other, and when the pair of semi-annular members are opened and rotated, the bendable on-off valves are bent at the hinge pin and the hinge connecting portion to form a through hole. It has an open configuration.

In the present invention, according to configuration 1, a pair of semi-annular members made of rigid bodies connected to each other via a pivot shaft so as to be freely openable and closable is provided with a pair of bending on-off valves also made of rigid bodies, and as the semi-annular members rotate. The bending on-off valve bends around the center of the hole to open and close the hole, unlike ball pulp, which has a ball in the center of the flow path.
The opening area can be substantially increased, and
There is almost no change in the flow direction of the fluid to be transported, so the flow resistance is small.

Therefore, according to the present invention, a valve device having a substantially large opening area and low flow resistance can be easily obtained.

In addition, since the pair of semi-annular members and the bending on-off valve are both made of rigid bodies, a rigid valve support body is provided in parallel to the flexible valve body, which allows only a small check force to be obtained, and the flexible valve Unlike the above-mentioned special valves in which solids are likely to be trapped between the body and the rigid structure of the valve support, this valve has the advantage that a large check force can be obtained and solids are not trapped.

An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 7.

In the figure, 1 is the valve box.

This valve box 1 is attached to a transportation path 2 (FIG. 8) for the fluid to be transported by screwing bolts (not shown) into screw holes 3. 6, and has a communication hole 1a for the fluid to be transported in the center thereof.

The communication hole 1a is formed into a spherical shape, and a pair of semi-annular members 8 and 9 made of a rigid body are housed inside the communication hole 1a.

One of the semi-annular members 8Q''! has an arcuate shape (correctly spherical shape) whose outer circumferential shape corresponds to the inner surface shape of the communication hole 1a;
In addition, the inner peripheral shape is formed into a rectangular shape by two orthogonal sides 8a and 8b, and a pivot 10 and a bearing 11 are provided at the upper and lower parts.
Also, there are hinge pipes 12, 1 on the two sides 8a and ab.
3, and the other semi-annular member 9, like the semi-annular member 8, has an outer circumferential shape in an arc shape matching the inner surface shape of the communication hole 1a, and an inner circumferential shape with two orthogonal sides 9a and 9b. Each is formed into a square shape, with a bearing 14 and a pivot 15 on the upper and lower parts, and hinge pipes 16 on the two sides 9a and 9b.
It is equipped with 17.

A pair of semi-annular members 8゜9 constructed as described above have a rectangular through hole O (Fig. 2) formed in the center thereof, and each other's pivot axes io and is are bored in each other's bearings 14 and 11. The bearings provided in the valve body 1 are fitted into the shaft holes 14a and 11a, and assembled so as to be mutually rotatable around the center line of the pivots io and is, that is, the perpendicular diagonal line d of the through hole O. Hole 4a.

Bearings 14, 11 are rotatably fitted into the flow hole 1a and inserted into the flow hole 1a so as to cross the flow hole 1a.

Q'! ,
As shown in FIGS. 2 and 7, a pair of upper and lower bending valves 18 and 19 made of rigid bodies are attached.

The bending on-off valve 18 consists of two right triangular members 2.
0.21, one short side of which is connected back to back with a hinge connection part 22, and the hinge connection part 22 is aligned with the perpendicular diagonal line d of the through hole 0, and the mouth edge 23 is aligned with the perpendicular diagonal line d of the through hole O. While aligning with the horizontal diagonal line d', insert the hinge pins 26 and 27 (the third (Fig. 6) is installed.

Further, the other bending on-off valve 19 is the bending on-off valve 18 described above.
Similarly, 24F) triangular members 28 and 29 of a right-angled triangle are connected with one short side thereof back to back with a hinge connection part 30, and the hinge-like connection part 30 is connected to the perpendicular diagonal line d of the through hole 0. With the mouth edge 31 aligned with the horizontal diagonal line d' of the through hole O, the hinge pipe 32 of itself and the hinge pipe 13 of the semi-annular member 8, and the hinge pipe 33 of itself and the semi-annular member 9 Hinge pipe 17
They are attached by inserting hinge pins 34 and 35 (Fig. 6) into the respective parts.

With this configuration, the bending on-off valves 18 and 19 have pivots io and i.
When the semi-annular member 8°9 rotates around s in the direction of transporting the fluid to be transported, it bends at the hinge pins 26, 27, 34, 35 and the hinge connecting portions 22, 30, opening the through hole O (
(See FIG. 7), and when the semi-annular members 8 and 9 rotate to close the communication hole 1a, they become flat and seal the through hole Ov.

Note that the hinge connecting portions 22 and 30 are hinge tubes 36, 37, 38, and 3 provided in the triangular member, as shown in FIG.
A hinge shaft 40.degree. 41 is inserted into the shaft 9 so that it can be bent freely.

FIGS. 8 and 9 show a preferred application example of the present invention, and show the bending on-off valves 18, 19 and the front and rear (front and rear) of the bending on-off valves.
Between the communication holes 1a (left and right in FIG. 8), there are cylinders 43, 4.
4 bends the inner and outer edges 45° 46. 47, 48 open/close valve 1
The mouth edges 23 and 31 of the holes 8 and 19 and the inner peripheral surface of the sweetfish hole 1a are fixed in a liquid-tight manner by adhesive or other means.

The cylindrical bodies 43 and 44 are made of a flexible material with excellent wear resistance and flexibility, and allow the bending valves 18 and 190 to open and close freely.

Mouth edges 23° 31 of bending on-off valves 18, 19 and cylindrical bodies 43, 4
A sealing member 49 with excellent wear resistance and impact resistance is attached to the inner opening end 45ν46 of the valve body 1, and a sealing member 49 with excellent wear resistance and impact resistance is installed between the communication hole 1a provided in the valve body 1 and the cylinder bodies 43 and 44. A liquid 50 such as the following is filled.

The sealing member 49 mentioned above is the opening edge 2 of the bending on-off valves 18 and 19.
3, 31 and the bending on-off valve 18,
190 improves sealing performance, and the liquid 50 indirectly receives the pressure of the fluid to be transported.
This protects the cylindrical bodies 43 and 44 by appropriately suppressing their deformation.

Note that the liquid 50 flows into the semi-annular member 8 as the valve device opens and closes.
, 9 and the valve box 1, or the semi-annular members 8, 9 and the bent opening/closing valve 18° to 190° clearance.

10 and 11 show a pair of semi-annular members 8 and 9 in a valve body 1.
Here is an example of a drive device that rotates the
is the piston rod of the cylinder (not shown).

Two links 52 are provided at the tip of this piston rod 51.
, 53 are rotatably attached by locking pins 54, and the free ends of links 52, 530 are connected to levers 56 and 57 by shaft pins 58 and 59, respectively.

Pivot 1 of the above levers 56, 57 + ζ semi-annular member 8゜9
0 and bearing 14, and are moved via links 52 and 53 by the axial movement of the piston rod 51 due to the operation of the cylinder, thereby rotating the pair of semi-annular members 8 and 9 in different directions. It is structured to move.

Next, the operation of the valve device according to the present invention configured as described above will be explained.

Figures 1, 2, and 10 show the closed state of this valve device. From this state, when the cylinder is applied to push the rod 51 to the left in Figures 10 and 11, The levers 56 and 57 are connected to the first lever via the links 52 and 53.
In Figure 0, the semi-annular members 8 and 9 are pulled to the left and pivoted to the axis io, i.
Rotate around s.

In this case, the semi-annular member 8 rotates counterclockwise in FIG.
By rotating the semi-annular members 8 and 80, the bending on-off valve 18,
19, the hinge connecting portions 22, 30 are mountain-folded, and the hinge pinots 26, 27, 34, and 35 are valley-folded and bent toward the front in FIG. Separate them so that the through hole 0 is opened to the maximum extent possible.

In this case, if cylinder bodies 43 and 44 are provided as an application, +3 8th
As shown, the upstream cylinder 44 is extended, and the downstream cylinder 43 is folded and contracted to allow the fluid to be transported to pass therethrough.

The liquid 50 filled between the cylinders 43, 44 and the valve body 1 indirectly receives the pressure of the fluid to be transported, thereby preventing excessive deformation of the cylinders 43,440.

When the rod 51 is moved in the opposite direction when the valve device is in the open state, the semi-annular members 8 and 9 return to the state shown in FIG. 23 and 31 are brought close together to close the through hole O.

By the way, the cylindrical bodies 43 and 44 in the application example are connected to the hinge connecting portion 22.
, 30, hinge pins, etc., dramatically enhancing the function of the valve device according to the present invention, and smoothing the transportation of solid-liquid mixed phase fluids such as ready-mixed concrete. Depending on the type of fluid to be transported, the cylindrical body 43
, 44 is not required.

When the bending opening/closing valves 18 and 19 are configured to have their apexes protruding downstream to close the through hole 0 in a square pyramid shape (see FIG. 5), the fluid to be transported moving from left to right in FIG. This structure is desirable because it increases the strength against reverse flow.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway front view of a valve device according to the present invention, FIG. 2 is a cross-sectional view, and FIG. 3 is a plan view of a pair of semi-annular members. 4 is an external view of the same, FIG. 5 is a sectional view of the hinge connection part, and FIG. 6 is a sectional view showing the connection structure of the hinge panel noise by the hinge pin.
Fig. 7 is an external view showing the assembled state of the semi-annular member and the bending on-off valve, Fig. 8 is a vertical cross-sectional schematic view showing an application example of the present invention using a cylinder, and Fig. 9 is the same as shown in Fig. 8. External view of cylinder body, No. 10
The figure is a plan view showing a connecting structure of links, levers, etc. that constitute the drive device, and FIG. 11 is a side view of the same. 1... Valve box, 8, 9... Semi-annular member,
10゜15...Axis, 11,14...
Bearing, 4a. 5a... Bearings are holes, 11a, 14a...
・Shaft hole, 18.19...Bent opening/closing valve, 22...
...Hinge connection part, 23... Old edge, 26,2
7... Conversion pin, 30... Hinge connection portion, 31, -0-9 lip, 34° 35... Hinge pin, 1a... Curved distribution JL8a. 8b, 9a, 9b...Side, 0...Curved hole, d
, d'・・・Diagonal line.

Claims (1)

[Claims] 1. A valve box having a communication hole, a bearing, and a pivot shaft, with a rectangular through hole formed in the center, and the bearing is fitted into the hole of the valve box, and the pivot shaft is inserted into the shaft hole of the bearing. a pair of semi-annular members made of a rigid body installed in the flow hole of the valve box so as to cross the flow hole while being rotatably connected to each other at one diagonal position of the through hole; The pair of semi-annular members Q can be freely bent on two mutually adjacent sides forming the through hole by making the hinge connecting portion approximately coincide with the diagonal line of the through hole and the mouth edge approximately matching the converging diagonal line of the through hole. It is characterized by comprising a pair of bending opening/closing valves made of a rigid body attached by a hinge pin and bent at the hinge pin and hinge connection portion to open a through hole when the pair of semi-annular members are opened and rotated. valve device.