JP2002250455A - Multi-directional switching valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-directional switching valve which is simple in structure and enables switching of air supply to a plurality of systems and also which is compact in size. SOLUTION: The valve is a multi-directional switching valve, which is provided with a flow passage portion; a flow passage switching means; and a driving means and a control means and comprises a cylindrical cylinder, on which the flow passage is provided with a suction portion and a plurality of delivery portions and at the same time, with the flow passage switched means comprises a movable valve which is connected to a movable valve, disposed in the cylinder and a piston rod connected to the movable valve and the end portion of the piston rod being connected to the driving means and the passage of fluid is opened or closed, by allowing the piston rod to shift through the means of the driving means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a multidirectional switching valve. More specifically, the present invention relates to a multidirectional switching valve mainly used for sucking / discharging air into / from an indoor air mat or a bedsore mat, and supplementing oxygen in an ornamental fish tank, a home septic tank, or the like.

[0002]

2. Description of the Related Art Conventionally, there is a switching valve for alternately supplying air to a plurality of systems. For example, as a switching valve used in a sewage purification tank that purifies wastewater from living mergers,
There is a switching valve connected to the air diffuser provided on the filter bed and the air diffuser for back washing. This switching valve divides the air chamber of the casing body into a plurality of parts, provides an electromagnet and a valve body for switching the air flow path in one part thereof, and switches the air supply destination by instructing the operation of the valve body by a control device. (Japanese Unexamined Patent Application Publication No. 10-238473,
00-274372). Such a switching valve can reduce noise due to the air chamber and reduce manufacturing costs.

[0003]

However, in such a switching valve, when the air is switched in multiple directions such as three or four directions, the number of electromagnets increases,
The structure of the electromagnet becomes complicated, a large casing body is required, and the switching valve tends to become large.

In view of the above circumstances, the present invention has a simple structure for switching air supply to a plurality of systems,
An object of the present invention is to provide a multidirectional switching valve capable of obtaining a multidirectional switching valve that can be reduced in size.

[0005]

A multidirectional switching valve according to the present invention is a multidirectional switching valve comprising a flow path section, a flow path switching means, a driving means and a control means,
The flow path section is formed of a cylindrical cylinder provided with a suction section and a plurality of discharge sections, and the flow path switching means is connected to a movable valve disposed in the cylinder and the movable valve. A piston rod is provided, and an end of the piston rod is connected to the driving means, and the driving means moves the piston rod to open and close a fluid passage.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multidirectional switching valve according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view showing an embodiment of the multi-directional switching valve of the present invention, FIG. 2 is a plan view of the multi-directional switching valve of FIG. 1, and FIG. 3 is the multi-directional switching valve of FIG. FIG. 4 is a schematic diagram illustrating the operation of the multidirectional switching valve of FIG. 1, FIG. 5 is a schematic diagram illustrating another embodiment of the linear driving means, and FIG. FIG. 7 is a schematic diagram showing another embodiment of the multidirectional switching valve, and FIG. 7 is a schematic diagram showing still another embodiment of the multidirectional switching valve of the present invention.

As shown in FIGS. 1 and 2, a multidirectional switching valve 1 according to an embodiment of the present invention includes the permanent magnet based on, for example, a magnetic interaction between an electromagnet and a permanent magnet. It can be used with an electromagnetic vibration type pump P that sucks and discharges a fluid by vibrating a diaphragm connected to the vibrator by the electromagnetic vibration of the vibrator. The multidirectional switching valve 1 and the electromagnetic vibration pump P
The suction part of the valve 1 and the discharge part of the pump P are hermetically connected by a flexible hose H.

[0009] The multidirectional switching valve 1 of the present embodiment comprises:
As shown in FIG. 3, a switching valve for alternately supplying air to a three-way system, comprising a flow path unit A, a flow path switching unit B, a driving unit C, and a control unit D installed in the housing 2. It is configured. In the present embodiment, the control means D is provided integrally with the housing 2. However, the present invention is not limited to this, and the control means D may be provided separately from the housing 2. .

The flow path section A comprises a cylindrical cylinder 5 provided with one suction section 3 and three discharge sections 4 and a branch path section 6 connected to the suction section 3 and the cylinder 5. .

The flow switching means B comprises five movable valves 7 arranged at predetermined intervals in the cylinder 5 and a piston rod 8 connecting the movable valves 7. The above 5
Of the movable valves 7a, 7b, 7c, 7d, 7e, the movable valve 7a and the movable valve 7b, and the movable valve 7d and the movable valve 7e,
The branch port 6a of the branch path section 6 and the discharge port 4 of the discharge section 4 respectively.
a, the branch port 6b of the branch path section 6, and the discharge port 4 of the discharge section 4
The movable valve 7b and the movable valve 7c, and the movable valve 7c and the movable valve 7d are respectively connected to the branch port 6a of the adjacent branch path section 6 and the discharge port 4a of the discharge section 4 and the branch path section. 6 and the discharge port 4 b of the discharge unit 4. Thus, the discharge sections 4a to 4c can be selected according to the positions of the branch ports 6a and 6b of the corresponding branch path section 6 and the movable valves 7a to 7e.

An annular recess is formed in the outer periphery of the movable valve 7, and it is preferable to provide an O-ring 9 in the recess. By providing the O-ring 9, the movable valve 7 and the cylinder 8 can be tightly closed to prevent fluid leakage. The O-ring can be omitted, and practical fluid leakage can be prevented only by the annular depression.

The driving means C includes a driving source 1 such as a motor.
And a disc-shaped guide plate 12 connected to the drive source 10 and the drive source 10 and having an annular concave guide groove 11 formed on the outer periphery. It is preferable to provide, for example, an outer peripheral guide ring (not shown) for smoothly guiding the rotational movement of the guide plate 12. The piston rod 8 and the guide plate 12 are connected to each other by a connecting shaft 13 formed at an end of the piston rod 8.
1 and are rotatably fitted and connected. When the drive source 10 is driven by the control means D to rotate the guide plate 12 by a predetermined angle, the guide plate 12
Is converted into linear motion by the connecting shaft 13 to move the movable valve 7 to a predetermined position. Thereby, opening and closing of the fluid passage from the suction part 3 to the three discharge parts 4 can be selected.

The control means D can be composed of a drive control timer section for setting the time points at which the drive source 10 is started and stopped, and a drive control section for starting and stopping the drive source 10. By this control means D,
In order to select the opening and closing of the three discharge units 4, for example, the movable valve 7 a is placed at a predetermined position in the circumferential direction of the guide plate 12.
停止 7e are arranged with stop sensors corresponding to the positions where they move,
When the stop sensor detects the positions of the predetermined movable valves 7a to 7e, the energization of the drive source 10 is stopped, and after an arbitrarily set time has elapsed, the drive control timer section is activated to activate the drive source. Start 10 Thus, the drive source 10 is energized only when the movable valve is operated by the stop sensor and the drive control timer, so that energy can be saved.

Next, the operation of the three-way switching valve of this embodiment will be described. As shown in FIGS. 3 and 4A, in a state where the piston rod 8 has advanced to the maximum inside the cylinder 5, the fluid sucked from the suction part 3 branches off at the branch path part 6 and passes through the branch port 6a. After that, it flows into the discharge port 4a, and is then discharged from the discharge unit 4. FIG. 4
As shown in (b), when the guide plate 12 is rotated by a predetermined angle to retract the piston rod 8 to a predetermined position in the cylinder 5, the fluid sucked from the suction part 3 flows through the branch path part 6. Branch and discharge port 4b via branch port 6b
And then discharged from the discharge unit 4. Further, as shown in FIG. 4C, when the guide plate 12 is rotated by 180 degrees and the piston rod 8 is retracted to the maximum in the cylinder 5, the fluid sucked from the suction part 3 branches off in the branch path part 6. Then, it flows into the discharge port 4c via the branch port 6b, and then is discharged from the discharge unit 4.

In the present embodiment, the end of the piston rod 5 is connected to the rotating guide plate 12 to linearly move the piston rod 5, but the present invention is not limited to this. As shown in FIG. 5, the end portion 21a of the piston rod 21 is formed into a tooth-shaped rack, and the end portion 21a is connected to one of the gears 22 of the reduction gear group connected to the drive source 10. By the connection, the piston rod 21 can convert the rotational motion of the gear group into a linear motion to move the movable valve 7.

In this embodiment, a three-way switching valve has been described. However, the present invention is not limited to this, and a two-way or four-way switching valve may be used.

Next, the two-way switching valve will be described. As shown in FIG. 6A, the two-way switching valve has a cylindrical cylinder 31 provided with two discharge portions 32, and a piston rod 33 provided with two movable valves 34.
Are connected. In such a two-way switching valve, as shown in FIG. 6 (a), when the piston rod 32 retracts as far as possible in the cylinder 31, the fluid sucked from the suction part 35 is discharged via the suction port 35a to the discharge port 35a. The liquid flows into the discharge section 32a, and is then discharged from the discharge section 32. FIG. 6
As shown in (b), when the guide plate 12 is rotated 180 degrees and the piston rod 33 is advanced to the maximum in the cylinder 31, the fluid sucked from the suction part 35 is discharged through the suction port 35a to the discharge port 35a. The liquid flows into the discharge section 32b, and then is discharged from the discharge section 32.

Next, the four-way switching valve will be described. As shown in FIG. 7A, the four-way switching valve includes a cylindrical cylinder 41 in which a suction part 42 is connected to a branch path part 43.
, And four discharge portions 44 are provided, and seven movable valves 46 are connected to the piston rod 45. These seven movable valves 46 correspond to FIG.
The movable valves 7 in the five movable valves 7 of the piston rod 8
The number is the same as the number of movable valves that are increased one by one outside a and 7e. In the four-way switching valve, as shown in FIG. 7A, when the piston rod 45 moves forward in the cylinder 41 to the maximum extent, the fluid sucked from the suction part 42 branches off in the branch path part 43 and branches. The liquid flows into the discharge port 44a via the port 43a, and is then discharged from the discharge unit 44.
Then, as shown in FIG. 7 (b), when the guide plate 12 is rotated by a predetermined angle and the piston rod 45 is retracted to a predetermined position in the cylinder 41, the fluid sucked from the suction part 42 is branched. Branch at part 43 to branch port 43a
Through the discharge port 44b, and then discharged from the discharge unit 44. Then, as shown in FIG.
When the guide plate 12 is further rotated by a predetermined angle and the piston rod 45 is further retracted in the cylinder 41, the fluid sucked from the suction part 42 branches off in the branch path part 43 and is discharged through the branch port 43b. Flows into exit 44c,
Subsequently, it is discharged from the discharge unit 44. Further, FIG.
When the guide plate 12 is rotated by 180 degrees and the piston rod 45 is retracted as far as possible in the cylinder 41 as shown in FIG.
And flows into the discharge port 44d via the branch port 43b, and then is discharged from the discharge section 44.

[0020]

As described above, according to the present invention,
By increasing the number of movable valves and providing branch paths, it is possible to switch the supply of air to a plurality of systems, so that a multidirectional switching valve that has a simple structure and can be downsized. Obtainable.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a multidirectional switching valve of the present invention.

FIG. 2 is a plan view of the multidirectional switching valve of FIG. 1;

FIG. 3 is a schematic diagram showing an internal structure of the multidirectional switching valve of FIG. 1;

FIG. 4 is a schematic diagram illustrating the operation of the multidirectional switching valve of FIG. 1;

FIG. 5 is a schematic view showing another embodiment of the linear driving means.

FIG. 6 is a schematic diagram showing another embodiment of the multidirectional switching valve of the present invention.

FIG. 7 is a schematic view showing still another embodiment of the multidirectional switching valve of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multidirectional switching valve 2 Housing 3 Suction part 4 Discharge part 4a, 4b, 4c Discharge port 5 Cylinder 6 Branch path part 6a, 6b Branch port 7, 7a, 7b, Movable valve 7c, 7d, 7e 8 Piston rod 9 O-ring 10 Drive source 11 Guide groove 12 Guide plate 13 Connecting shaft A Flow path section B Flow path switching means C Driving means D Control means H Hose P Electromagnetic vibration pump

Continued on the front page F term (reference) 3H063 AA09 BB32 CC02 CC04 DA14 DB32 DB44 GG02 3H067 AA16 BB02 BB12 BB14 CC32 DD08 DD12 DD32 DD45 FF09 FF17 GG03

Claims (9)

[Claims] 1. A multidirectional switching valve comprising a flow path unit, a flow path switching unit, a driving unit, and a control unit, wherein the flow path unit is provided with a suction unit and a plurality of discharge units. A flow path switching means comprises a movable valve disposed in the cylinder and a piston rod connected to the movable valve, and an end of the piston rod is connected to the drive means. A multidirectional switching valve, wherein the driving means moves the piston rod to open and close a fluid passage. 2. The multidirectional switching valve according to claim 1, wherein two discharge portions are provided on the cylindrical cylinder, and two movable valves are connected to the piston rod. 3. A suction part is connected to the cylindrical cylinder via a branch path, and at least three discharge parts are provided, and the piston rod has a number corresponding to the number of the discharge parts. The multidirectional switching valve according to claim 1, wherein the movable valve is connected to the switching valve. 4. An end of the piston rod is connected to a disk-shaped guide plate connected to a drive source of the drive means, and the piston rod converts a rotational motion of the guide plate into a linear motion. 4. The multidirectional switching valve according to claim 1, wherein the movable valve is moved. 5. An end of said piston rod is connected to a group of gears connected to a drive source of said drive means, and said piston rod converts the rotational movement of said group of gears into a linear movement to form a movable valve. The multidirectional switching valve according to claim 1, 2 or 3, which is moved. 6. The multidirectional switching valve according to claim 1, wherein the control means of the driving source is installed so as to be integral with a housing. 7. The control means comprises a drive control timer unit and a drive stop control unit, and a stop sensor corresponding to a position where the movable valve moves is disposed at a position in a circumferential direction of the guide plate. When detecting any position of the movable valve, the power supply to the drive source is stopped, and after an arbitrary set time has elapsed, the drive control timer section is activated to start the drive source. 2, 3, 4,
7. The multidirectional switching valve according to 5 or 6. 8. The multidirectional switching valve according to claim 1, wherein a concave depression is provided on an outer periphery of the movable valve. 9. The multidirectional switching valve according to claim 8, wherein an O-ring is provided in the concave recess.