JP3242699B2 - Fluid valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid valve.

[0002]

2. Description of the Related Art Hitherto, many valves for opening and closing a fluid passage have been proposed and widely used in many fields such as water, chemistry, medicine, and food. The valve used in these fields has a valve chamber provided with a valve body and a valve seat, and has a rotary shaft or a pressing shaft for driving the valve body provided through the valve body, The body is connected to these valve stems. Further, in order to prevent the liquid in the valve from leaking to the outside along the periphery of the valve shaft, a sealing material such as a packing and an O-ring is provided, and the valve body is driven from outside the valve chamber through the valve shaft. Thus, the fluid flow path is opened and closed.

In such a configuration, as is apparent from the structure, Since the space between the valve element and the valve seat is repeatedly slid or pressed strongly, fine particles generated by sliding frictional wear or repeated local shearing force on the pressed portion are mixed into the fluid. 2. Since the gap between the valve body and the valve seat is repeatedly slid or pressed strongly, the opening and closing of the fluid is hindered by the above-mentioned phenomenon and / or the creep phenomenon of the member. 3. Since the rotating shaft or the pressing shaft is a shaft sealing mechanism that penetrates through the valve main body, wear and creep of the sealing material occur over a long period of use, and problems such as leakage and replacement of parts occur. And the like.

[0004] There have been proposals to solve these problems. For example, the fluid circuit breaker described in JP-A-56-20883 is considered to be one of the proposals. In this fluid circuit breaker, a valve body made of a soft magnetic member is provided independently of the valve chamber, and the valve body is moved left and right in accordance with the movement of an external permanent magnet member, and a valve seat is provided. It is structured to open and close. The fluid flows through a gap provided between the inner wall of the valve chamber and the valve body. If this gap is made large, the valve body becomes small, and the opening of the valve seat must be even smaller.

[0005] As is apparent from this consideration, in such a fluid circuit breaker, the pressure loss during the flow of the fluid becomes large, and it is difficult to secure a sufficient flow rate. have. As described above, it can be said that a truly desirable fluid valve does not yet exist, and a new fluid valve has been strongly demanded.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and there is little foreign matter mixed into a fluid during long-term use, and there is no leakage of the liquid to the outside. It is an object of the present invention to provide a fluid valve having a small loss of fluid pressure.

[0007]

To achieve the above object, according to the Invention The fluid valve provided by the present invention, there independently of the valve chamber has a fluid-conducting bore, a built-in permanent magnet a valve body with, and to have a rotatable spherical or cylindrical shape,
Provided at least two of the valve body drive means valve chamber outside of al
In the fluid valve described above, the permanent magnet is
And at least two are left and right with respect to the center line (I) of the valve body.
They are arranged symmetrically, and their shapes are ring, disk,
Or, in the case of a spherical valve body, the above-mentioned center line
The center line of the fluid communication hole orthogonal to (I) and the cylindrical valve
With respect to the center line of the valve element orthogonal to the center line (I).
And the N and S poles are magnetized so as to be aligned in the same direction.
Further, the valve body driving means is configured to flow in a fluid flow direction.
Hand that changes the angle of the center line of the body conduction hole by rotating the valve body
It is characterized by steps .

The valve element driving means basically has a function of generating a magnetic field, and the interaction between the generated magnetic field and a permanent magnet built in the valve element causes the valve element to be closed when the valve is closed. Crimping against the valve seat and rotating the valve 90 degrees at a time, and matching the passage hole with the flow path axis of the fluid or making an angle of 90 degrees accordingly to interrupt the flow path. Be able to do it. Further, when the valve element is rotated, the valve element is driven by releasing the valve element from the valve seat and generating an external magnetic field so as to rotate the valve element with little sliding on the valve seat.

[0009]

As described above, the valve element is rotated in a state close to non-sliding at the time of driving for opening and closing, so that little foreign matter is generated, there is no abrasion deterioration, and the valve element is provided with a conduction hole. Therefore, the pressure loss of the fluid can be reduced.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main part showing a first embodiment of the present invention. In FIG. 1, the fluid valve is provided with a valve chamber 1, which includes a spherical valve body 2 and forms a space formed by a downstream valve seat 3, an upstream valve seat 4, and an outer wall 5. ing. The valve seats 3, 4 and the outer wall 5 are made of stainless steel, brass,
It is made of a non-magnetic material such as plastic. In the present embodiment, the valve body 2 has a spherical shape with a fluid passage hole 6 provided therein, and the diameter of the sphere is smaller than the inner diameter of the outer wall 5 having a circular cross section, and the downstream valve seat 3 and the upstream side The interval between the valve seats 4, more strictly, is smaller than the interval between the seat rings 8 and 9 provided on the valve chamber side of these valve seats. However, the openings 10, 11 provided in the valve seats 3, 4
Is bigger than.

The valve body 2 is made of a non-magnetic material, and has a permanent magnet material 7 therein. Here, as the permanent magnet material, ferrite, alnico, rare earth magnet (SmCo
Materials such as NdFeB). These can be a sintering mold or a casting mold, as well as a plastic magnet combined with a magnetic powder. These permanent magnet materials are materials having poor corrosion resistance, are liable to generate chipping and cracking, or are liable to generate powder by sliding.
To avoid these drawbacks, the surface of the permanent magnet material should not be in direct contact with the fluid. For this purpose, the permanent magnet material is suitably molded or covered with plastic or the like.
The permanent magnet material 7 used for the valve body 2 is magnetized and has an N-pole and an S-pole to serve the purpose of the present invention only when it has an N-pole and an S-pole.

[0012] FIG. 2, Ru vertical cross-sectional view der of the valve body 2. Permanent magnet
The stone is the center line of a sphere orthogonal to the center line 15 of the fluid passage.
Relative (not shown), are two Ke is disposed Contact symmetrically,
The holding state of the N pole and the S pole depends on the center line 15 in relation to the valve body driving means 12 and 13 (see FIG. 1).
It is magnetized so that the N and S poles are aligned in the same direction. FIG.
FIG. 3 is a perspective view of the permanent magnet material 7 used in FIG. 2 and has a thin ring shape. As shown in FIG. 2, two pieces are arranged at positions where the left and right sides are substantially symmetrical in the valve body 2. The ring- shaped permanent magnet material 7 is used in a state in which an N pole appears at one end by being magnetized, and an S pole appears 180 degrees on the opposite side. At this time, as shown in FIG. 2, the two permanent magnet materials 7, 7 are arranged such that the N pole and the S pole are aligned in the same direction with respect to the center line 15 of the fluid communication hole 6.
That is, when molding the magnet material , the shaft center 5 of the hollow cylinder (the hollowing may be formed by processing after molding).
3 (FIG. 3) is applied with an external magnetic field.
Thereafter, when magnetizing, if an external magnetic field is applied in the same direction as 54 (FIG. 3), N poles and S poles are applied to 7a and 7b (FIG. 3).
A pole appears (however, which pole depends on the direction of the external magnetic field).

In FIG. 1, valve body driving means 12, 13
Are electromagnetic coils. The electromagnetic coil indicated by the valve element driving means 12 can form a magnetic field substantially parallel to the fluid flow path near the valve element 2 when energized, and the electromagnetic coil indicated by the valve element driving means 13 During energization, a magnetic field substantially perpendicular to the fluid flow path can be formed near the valve body 2. The holding jig 14 is attached to the valve body driving means 13.
Is preferably provided.

How the valve element 2 is driven by the valve element driving means 12 and 13 with the above-described configuration will be described with reference to FIGS. In FIG. 4A, the valve body 2 is in a state as shown in FIG. 1, the fluid communication hole 6 is connected to the opening portions 10 and 11 provided in the valve seats 3 and 4, and the fluid is The flow is 11 → 6 → 10. That is, the valve is in the "open" state. In this state, when the valve driving means 12 is energized to form a magnetic field 18, the permanent magnet 7
N pole 16 generates a repulsive force with magnetic field 18, while
The south pole 17 generates a suction force. Therefore, a rotational force 20 is generated in the valve body 2. Then, the valve body 2 rotates 90 degrees to be in the state of B in FIG. At this time, a maximum attractive force is generated with the external magnetic field 18, and no further rotation is generated. In this state, the fluid communication hole 6 is disconnected from the openings 10 and 11 shown in FIG. 1 and the valve body 2 is pulled by the attraction to the external magnetic field 18 so that the valve body 2 is connected to the downstream seat ring 8 shown in FIG. 1
Press) to completely close.

Next, a method for operating the valve body 2 from the closed state to the open state will be described with reference to FIGS. A in FIG.
Shows the valve element 2 in the state of B in FIG. Here, first, the energization of the valve body driving means 12 shown in FIGS. 1 and 4A is stopped, or the energization is performed in the opposite direction, and the magnetic field 1 shown in FIG.
A magnetic field (not shown) in the direction opposite to that of the valve ring 8 is generated to release the valve body 2 from the seat ring 8. By this operation, the valve 2
Is almost in a non-sliding state with the seat ring 8. In this state, the valve body driving means 13 shown in FIGS. 1 and 5A is energized to form a magnetic field 22. As a result, a repulsive force is applied between the permanent magnet 7 incorporated in the valve body 2 and the N pole 19, and the S pole 21
, A suction force is generated, and a rotational force 23 is generated. As a result, when the valve body 2 rotates 90 degrees from the state shown in FIG. 5A, the attractive force between the magnetic field 22 and the S poles 17 and 21 of the permanent magnet becomes maximum, and the rotation stops here. State. That is, the valve body of FIG. 5B has the same positional relationship as that of FIG. 4A, and the valve is in the open state. The valve mentioned above
The opening / closing status of external magnets (electromagnetic coils) 12 and 13
Table 1 below collectively shows the driving states.

[Table 1]

According to the above description, the valve element 2 can be rotated by the valve element driving means to open and close as a valve.
Although the above-described valve body drive uses two electromagnetic coils, in the present invention, a larger number of electromagnetic coils are used,
Furthermore, various control of the valve body can be performed by controlling the generated magnetic field, that is, controlling the strength and direction of the magnetic field and the timing of generation thereof.

An example will be described below. 4A, an attractive force is generated in the valve body 2 in the direction of the seat ring 8 at the same time as the rotation of the valve body 2, and in FIG. It has occurred. As a result, some sliding may occur. This can be reduced by using four electromagnetic coils as shown in FIG. 6 of the second embodiment.

In FIG. 6, valve driving means 24, 25, 2
Numerals 6 and 27 denote electromagnetic coils, and 24 and 25 and 26 and 27 are located substantially symmetrically with respect to the center of the valve element 28, respectively. The valve body 28 incorporates the permanent magnet described in FIGS. 2 and 3 and is supported by the seat rings 29 and 30 when the fluid valve is opened and closed.

In FIG. 6, it is assumed that the fluid flows from the left to the right. In the open state shown in FIG. 6, no current flows through 24 and 25, current flows through 26 and 27, and is substantially the same in the direction perpendicular to the fluid flow and in the same direction. A strong magnetic field is formed, and the position of the valve body 28 is stabilized. Next, in order to shift from the open state to the closed state, the currents 26 and 27 are turned off, the currents are passed through 24 and 25, and a magnetic field having almost the same strength in the fluid flow direction and in the same direction is applied. The valve body 28 is rotated by 90 degrees, the current is then cut off only at 25, and the valve body 28 is brought into close contact with the seat ring 29 on the downstream side of the flow of the fluid to be closed. Next, in order to move from the closed state to the open state, the electric current at 24 is turned off, the electric current is passed through 26 and 27, and a magnetic field having almost the same strength is formed perpendicularly and in the same direction as the flow of the fluid. The body 28 is rotated by 90 degrees, and at the same time, the position of the valve body 28 after rotation is stabilized. The open / close status of such a valve is
And the driving state with the files (24, 25, 26, 27)
The results are shown in Table 2 below.

[Table 2]

In the above operation, the magnetic field formed by 25 is more than the magnetic field formed by 24 so that the valve element 28 generates an extra force that can oppose the flow of the liquid when the state changes from the open state to the closed state. The valve structure is rotated by controlling the coil structure and the current value so as to be strong. Next, the current is cut off only at 25, and the valve body 28 is brought into close contact with the downstream seat ring 29 of the flow of the fluid to bring it into a closed state. Next, in order to shift from the closed state to the open state, a current is passed through 25 to form a magnetic field of the same magnitude as that when the above-described open to closed state is formed, and then 26 and 2
7, the valve body 25 is rotated through the electric current, and then the electric currents of the valves 24 and 25 are shifted to the incision state. In this manner, the sliding between the valve body 25 and the downstream seat ring 29 can be further drastically reduced.

It is needless to say that when the valve element is positioned in the open state as shown in FIGS. 4A and 6, it is not necessary to bring the valve element into close contact with the seat ring. FIG.
As described in the above description, by using four electromagnetic coils, it becomes possible to drive the valve more nearly without sliding than when using only two electromagnetic coils.

FIG. 7 is a vertical sectional view showing a main part of a third embodiment of the present invention. In the present embodiment, the valve body 32 has a columnar shape provided with a fluid communication hole 36. Further, permanent magnets are built in the left and right sides of the fluid communication hole 36. The permanent magnet is a circular plate shape, and molded by a molding method as shown in FIG. 3, if magnetized, circular plate of 7a, respectively 7b N pole and the S pole generated. Such circular plate-shaped permanent magnets are symmetrically arranged on the left and right sides of the fluid introducing hole 36 of the cylindrical valve body 32. To accommodate the valve body 32, the valve chamber 3
1 is a projection 3 having a cylindrical shape with respect to the main pipe 40.
FIG. 7 shows an example in which 5 is provided. A structure without the protrusion 35 may be used. However, in that case, the valve body 32
Is shortened, and the fluid passage hole 36 must be narrowed or the permanent magnet must be thinned.

FIG. 8 is a left side sectional view of the valve chamber of FIG. FIG. 8 shows the valve body driving means 42, 42 ' (FIG.
(Not shown ) . This has a structure in which coils 44 and 44 'are wound around iron cores 43 and 43', and N-poles or S-poles appear on the iron core end faces 45 and 45 'by energizing the coils. I have. The valve driving means 39 shown in FIG. 7 is an electromagnetic coil similar to the valve driving means 12 shown in FIG. Using these valve drive means, the valve 32 can be rotated to open and close the fluid valve device.

The permanent magnet 3 built in the valve body 32
7 is a position where the valve element 32 is closed (this is the
7), the north and south poles are
It must be magnetized so that it is positioned up and down when applied. By doing so, at the time of closing, the attraction force can be generated by the magnetic field generated by the valve body driving means 39, and the downstream valve seat 33 in FIG. 7, the seat ring 38 attached thereto and the valve body 32 can be press-bonded, and the fluid can be sufficiently sealed. By the way, when the valve element 32 in FIG. 8 is in the open position, the valve element driving means 39 is energized to form a magnetic field.
Assuming that this magnetic field has an N pole and an S pole like the magnetic field 41 in FIG. 7, an attractive force is generated between the magnetic field and the N pole of the permanent magnet 37 built in the valve body 32 on the back side thereof. The repulsive force acts on the poles, and the valve body 32 rotates, and stops when it rotates 90 degrees as described above, and the valve body is closed.

In FIG. 7, the valve body driving means 39 includes the valve body 32.
However, the valve driving means 39 may be mounted at the upstream position. When the valve body driving means 39 is mounted at the downstream position, the valve body 32 is pressed against the seat ring 38 simultaneously with rotation, but when the valve body driving means 39 is mounted at the upstream position, the valve body 32 is , While being sucked in the upstream direction. On the other hand, since the valve element 32 receives a force in the downstream direction due to the fluid pressure, the valve element 32 can be rotated only in a substantially stationary state by properly balancing the two.

Next, a method of operating the valve body 32 from the closed state to the open state will be described. FIG. 9 is an operation explanatory view of the valve body 32 related to FIG. In this figure, the valve 3
2 is in the closed position. In this state, the energization of the valve body driving means 39 is stopped, and the valve body driving means 42, 4 shown in FIG.
2 ', the coils 44, 44' are energized, and the iron core 43,
A magnetic field is formed at 43 '. When the magnetic field is as shown in FIG. 9, a repulsive force is generated between the N-pole and the S-pole of the valve body 32, and a repulsive force is generated with the S-pole.
Rotates 90 degrees and stops at the state shown in FIG . As a result, the valve element 32 is opened.

FIGS. 10, 11, and 12 are cross-sectional views of the valve chamber 31 taken along line XX in FIG. 7, and FIG. 10 shows the layout of the valve body driving means 42. In these figures, 43a to 43h indicate only the iron core of the valve body driving means 42. All of these require coils as shown in FIG. 8 to function. FIG. 10 corresponds to FIGS. 8 and 9. In this case, two iron cores are arranged corresponding to one permanent magnet 37. In this example, as shown in FIG. 9, by magnetizing the iron core, the valve body 32 can be held at substantially the center of the valve chamber 31 and rotated.

In FIG. 11, one iron core is arranged corresponding to one permanent magnet 37. In this method,
The rotation of the valve body 32 can be performed. FIG. 12 shows another
Two arrangement examples are shown. In FIG. 12, the iron core 43h may be omitted.

Incidentally, the permanent magnet 37 in FIG.
As can be seen from FIG. 8, although the disk shape, but the invention is not limited thereto, a ring shape (e.g., shape such as shown in FIG. 3) may be of. FIGS. 13 and 14 are longitudinal sectional views showing another embodiment of the valve element 32. FIG.
Here, the valve body 32 in which four rectangular parallelepiped permanent magnets 37a to 37d are incorporated is shown. Further, as shown in FIG. 14, the permanent magnets may be connected by soft irons 47a and 47b, respectively. 8 to 12, an electromagnetic coil with an iron core is shown as the valve body driving means, but the iron core is not always necessary. By the way, in FIG. 7, the valve body 32 has a dimensional relationship with the valve seats 33 and 34 and the seat ring 38 attached as necessary in the valve chamber 31 and further with the valve chamber outer wall 35a.
By designing the valve element 3 small enough to create a gap,
2 can reduce the occurrence of sliding during rotation.

FIG. 15 is a longitudinal sectional view showing a fourth embodiment of the present invention. FIG. 7 is provided for the purpose of rotating the valve body 32 or crimping the valve body 32 to a seat ring. The valve drive means 39 and 42 are replaced with other means. That is, in FIG. 7, the means uses an electromagnetic coil, but this embodiment shows an example in which a permanent magnet is used.

FIG. 16 is a view showing the Y-axis near the valve chamber 31 in FIG.
It is sectional drawing in the Y line. As shown in the figure, the permanent magnets 49a, 49
A ring-shaped valve driving means 48a in which b is incorporated is provided. As shown in FIG. 15, in this ring-shaped valve body driving means, equivalent 48b is provided at a position symmetrical to 48a. Since an attractive force acts between the permanent magnet built in the valve body driving means and the permanent magnet built in the valve body, the valve body 32 is also rotated by rotating the valve body driving means 48a and 48b. Thus, the valve device can be opened and closed. In addition, by using appropriate means such as connecting the valve body driving means 48a and 48b with a connecting bar,
The rotation of the means can be performed integrally on the left and right sides, whereby the rotation of the valve body 32 can be performed without causing twisting or offset. Further, since the rotation of the valve element 32 depends on the rotation of the valve element driving means 48a, 48b, it is preferable that the positioning of the means be performed with high accuracy. For this purpose, although not shown in FIG. It is preferable to clarify the indication of the position with respect to the means, or to provide a stopper for restricting rotation by an appropriate position or means.

In the example shown in FIG.
a is made of a plastic ring, and has built-in rectangular parallelepiped permanent magnets 49a and 49b, one on each side. In this example, the omission of the permanent magnet 49b is possible for the rotation of the valve body 32. Also, the shape of the permanent magnet is not limited to a rectangular parallelepiped, and may be a semi-lunar shape having a curvature according to the shape of the plastic ring. In addition, soft iron can be used instead of permanent magnets. On the other hand, although the example in which the permanent magnet materials 49a and 49b are built in the plastic ring is presented, the permanent magnet used as the valve body driving means is different from the permanent magnet 37 built in the valve body 32 and is different from the fluid. Since there is little possibility of contact, it is not always necessary to incorporate it. For example, a method in which a rail is provided on the valve chamber outer wall 35a, a permanent magnet block or the like is attached thereto, and the slide is performed.

Next, the valve body driving means 50 shown in FIG.
The role of will be described. The means 50 includes, for example, a plastic ring 52 concentrically incorporated in a main pipe 40 having a cylindrical cross-sectional shape as one embodiment, and a rectangular parallelepiped permanent magnet 51 built in two places of the ring 52.
a and 51b. When the valve element 32 is in the closed state, and in the configuration of FIG. 15, the S pole of the permanent magnet incorporated in the valve element 32 is directed downstream and the N pole is directed upstream. In the state, it is used to press the valve body 32 against the seat ring 38. For this purpose, in FIG. 15, the valve body driving means 50 is moved in the upstream direction as much as possible, that is, close to the valve body 32, and the attraction force between the permanent magnet 37 and the permanent magnets 51a, 51b is increased. Achieved by:

On the other hand, when the valve body 32 is operated from the closed state to the open state, the valve body driving means 50 is operated to facilitate the rotation of the valve body 32 and release the sliding state with the seat ring 38. It is preferable to move away from the body 32 to reduce the attractive force between the permanent magnets. Although not shown in FIG. 15, a valve drive means equivalent to the illustrated valve drive means 50 may be provided on the upstream side of the valve body 32 or may be provided on both upstream and downstream sides. If it is provided only on the upstream side, the repulsive force between the valve body 32 and the permanent magnet 37 incorporated in the valve body 32 will be used.
It is necessary to set the rotation direction 2 and the magnetization direction of the permanent magnet built in the valve body driving means.

When the valve body 32 is pressed against the seat ring 38 by using the attraction force between the valve body driving means 50 and the permanent magnet 37 built in the valve body 32, the means 5 is used.
Soft iron may be used in place of the permanent magnets 51a and 51b built in the zero. Further, the shape of the magnetic body incorporated in the valve body driving means 50 is not limited to the rectangular parallelepiped shape, but may be a half-moon shape. Alternatively, a permanent magnet ring may be used. By the way, unlike the valve body driving means 48a and 48b, the valve body driving means 50 does not need to rotate around the main pipe 40. Therefore, although the description has been made in the case of the ring shape, the magnetic body 51
What is necessary is just to make it the structure which can make a and 51b move back and forth. For example, after the valve body 32 is rotated to the closed state, a block-shaped magnetic body may be attached to the vicinity of the valve chamber 31. The block-shaped magnetic body may be brought close to the main pipe 38 by a sliding method from a direction perpendicular to the central axis thereof. A method of keeping away may be used.

It is also possible to use valve driving means together. That is, FIG. 7 illustrates an example using an electromagnetic coil, and FIG. 15 illustrates an example using a magnetic material. However, a combination of an electromagnetic coil and a magnetic material may be used. For example, in FIG. 15, the valve body driving means 50 may be replaced with an electromagnetic coil. In this case, the electromagnetic coil may be used merely for generating an attraction force, or may be used for rotating the valve element 32 as necessary. The concept described with reference to FIG. 15, that is, the concept of using a magnetic material as the valve body driving unit can be applied to the case where the valve body 2 shown in FIG. 1 has a spherical shape.

[0037]

As described above, according to the present invention, there are provided: At the time of opening and closing of the valve element, the valve element and the valve seat can be rotated without being brought into close contact with each other, so that the generation of foreign matter due to sliding friction can be suppressed extremely small. 2. In the closed state, a means for sufficiently transmitting the pressure between the valve body and the valve seat is provided, so that the completely closed state of the fluid valve can be realized. 3. Since there is no member penetrating the valve chamber, liquid leakage to the outside of the valve body does not occur. 4. Since there are no parts that are repeatedly slid or pressed repeatedly, wear and creep of liquid seal materials such as seat rings, O-rings, packings, and diaphragms do not occur. 5. The valve body is provided with a fluid passage hole having a sufficient diameter, so that a pressure loss during fluid flow can be reduced. Thus, a fluid valve having excellent performance can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view of a valve body in FIG.

FIG. 3 is a perspective view of a permanent magnet material shown in FIG. 2;

FIG. 4 is a diagram showing a magnetic field and a valve body driving unit in FIG. 2, and is a diagram showing an operation when the valve body shifts from an open state to a closed state.

FIG. 5 is a drawing showing a magnetic field and another valve driving means in a cross-sectional view of the valve in a closed state, and is a drawing showing an operation when the valve moves from a closed state to an open state.

FIG. 6 is a longitudinal sectional view of a main part showing a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a main part showing a third embodiment of the present invention.

8 is a left side sectional view including a valve chamber and a valve body driving unit in FIG. 7;

FIG. 9 is a cross-sectional view showing a case where the valve body in FIG. 8 is in a closed state.

FIG. 10 is a cross-sectional view including a valve chamber and a valve body driving means taken along line XX in FIG. 7;

11 is a view showing a case where the number of valve body driving means in FIG. 10 is two.

FIG. 12 is a view showing another arrangement example of the valve body driving means.

FIG. 13 is a transverse sectional view showing another embodiment of the valve body in FIG. 7;

14 is a cross-sectional view showing another embodiment of the permanent magnet in the valve body of FIG.

FIG. 15 is a longitudinal sectional view of a main part showing a fourth embodiment of the present invention.

FIG. 16 is a sectional view taken along line YY in FIG. 15;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Valve chamber, 2 ... Valve element, 3 ... 4 Valve seat, 5 ... Outer wall, 6 ... Fluid communication hole, 7 ... Permanent magnet material, 8, 9 ... Seat ring,
Reference numerals 10, 11: apertures, 12, 13: valve driving means, 14
... Holder, 15 ... Center line, 16, 19 ... N pole, 20,2
3: rotational force, 17, 21: S pole, 18, 22: magnetic field

Continuation of front page (56) References JP-A-3-200592 (JP, A) JP-A-4-370482 (JP, A) JP-A-4-34278 (JP, A) JP-A-64-65376 (JP) , A) Japanese Utility Model Showa 49-40823 (JP, U) Japanese Utility Model Showa 59-155372 (JP, U) Japanese Utility Model Showa 63-180774 (JP, U) Japanese Patent Publication No. 61-7557 (JP, B2) (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 31/00-31/11

Claims (1)

(57) [Claims] It exists independently of 1. A valve chamber has a fluid introducing hole, a built-in permanent magnet, and a valve body which have a rotatable spherical or cylindrical shape, and La In a fluid valve provided with at least two valve driving means outside the valve chamber,
The permanent magnet has at least two
It is arranged symmetrically with respect to the center line (I) of the body,
Its shape is ring-shaped, disk-shaped, or straight three-dimensional,
In the case of a spherical valve body, the fluid conduction orthogonal to the center line (I)
The center line of the through-hole, and the above-mentioned center line (I) for the cylindrical valve element
N and S poles are in the same direction with respect to the center line of the valve
And the valve body driving means
Is the angle of the center line of the fluid communication hole with respect to the fluid flow direction.
Is a means for changing by rotating the valve element.
Fluid valve.