JP3074599U - Valve device - Google Patents

Abstract

(57) [Problem] To provide a valve device capable of automatically closing a valve before liquid overflows. SOLUTION: A manual lever 12 urged to manually open and close a valve portion 2 and maintain the valve portion 2 in a closed state.
When the manual lever 12 is operated to open the valve unit 2 once, the manual lever 12 is held by the electromagnet 21 to maintain the open state of the valve unit 2. A sensor 7 is provided at the lower end of the liquid passage section 6, and when the sensor 7 detects the liquid level, the holding of the manual lever 12 by the electromagnet 21 is stopped. The valve can be automatically closed before the liquid overflows to prevent the liquid from overflowing.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a valve device used for subdividing a liquid from a large tank to a small tank.

[0002]

[Problems to be solved by the invention]

 Conventionally, only the manual valve was provided at the outlet of the large tank, so when subdividing liquid such as kerosene into the small tank, carefully monitor the liquid so that it would not overflow, There was an annoyance that the manual valve had to be closed before the liquid overflowed. In addition, there was a problem that if the monitoring was neglected, the liquid would overflow.

[0003] In view of the above circumstances, the present invention provides a valve at the outlet of a large tank so that the valve is automatically closed before the liquid overflows even if monitoring is not performed, and the liquid is discharged. It is an object of the present invention to provide a valve device that can prevent overflow.

[0004]

[Means for Solving the Problems]

 According to the valve device according to the first aspect of the present invention, in a valve device for dividing a liquid from a large tank to a small tank, a tank connection portion connected to a liquid discharge port of the large tank and a lower portion of the tank connection portion are provided. A valve portion, a liquid passage portion provided at a lower portion of the valve portion for guiding liquid to a small tank, a sensor provided at a lower end portion of the liquid passage portion for sensing a liquid level of the liquid, and a side of the valve portion. A manual lever provided in the unit for manually opening and closing the valve unit and biasing to maintain the valve unit in a closed state; and a manual lever below the manual lever and adjacent to a side of the valve unit. An electromagnet provided to hold the manual lever so as to maintain the open state of the valve portion once the valve portion is opened by the manual lever, and to stop holding the manual lever in response to a signal from the sensor. And With this configuration, when liquid is divided from a large tank to a small tank, the valve can be automatically closed before the liquid overflows even if monitoring is not performed, preventing the liquid from overflowing. .

According to the valve device of the present invention, a cylindrical hollow portion having a wide central portion and a narrow vertical portion is provided inside the valve portion, and a lower portion of the hollow portion is a valve. And a ball is accommodated in the hollow portion. The diameter of the ball is smaller than the central portion of the hollow portion and larger than the upper and lower portions of the hollow portion, and the ball is placed on the valve seat. The valve unit is configured to be closed in a state in which the valve unit is mounted, so that the structure of the valve unit is simple and the number of parts is small, so that the valve device can be provided at low cost and maintenance can be easily performed. can do.

According to a third aspect of the present invention, a valve opening / closing rod support portion is provided on a side of the valve portion, and a valve opening / closing rod support is provided inside the valve opening / closing rod support portion. The valve opening / closing rod is provided with one end protruding into the hollow portion and the other end protruding outside the valve opening / closing rod support portion, and is urged toward the outside of the valve opening / closing rod support portion by a spring. A manual lever is attached to the upper part of the valve opening / closing rod support part via a manual lever support part so as to be rotatable about a support shaft, and the manual lever is connected to a lower part of the support shaft via a connection shaft. Since the valve opening / closing rod is connected, when the manual lever is turned, the valve opening / closing rod is pushed toward the cavity and slides, and one end of the valve opening / closing rod pushes the ball, and the ball and the ball are connected. A gap is created between the valve seats, and the valve portion is opened, Since the structure for opening and closing the valve portion is simple and the number of parts is small, the valve device can be provided at low cost and maintenance can be facilitated.

According to the valve device of the fourth aspect of the present invention, a suctioned portion made of a ferromagnetic material is provided on the valve portion side of the lower end side portion of the manual lever, and the valve opening and closing rod support portion is provided. A switch contact portion is rotatably provided at a lower portion, a pedestal portion is provided below the valve opening / closing rod support portion, and an electromagnet is provided at a position of the pedestal portion facing the suctioned portion. Since a switch is provided at a position of the pedestal portion facing the switch contact portion, when the manual lever is rotated and the suctioned portion contacts the electromagnet, the switch contact portion contacts the switch and the electromagnet moves. Is turned on, the attracted portion is attracted by the electromagnet, and the electromagnet is turned on only when the attracted portion is in contact with the electromagnet, so that the power for driving the electromagnet can be reduced to a minimum.

According to the valve device of the present invention, an electronic circuit is provided on a side portion of the valve, and the electronic circuit is operated by a signal from the switch in the electronic circuit. Since an electronic circuit for stopping the electromagnet in response to a signal from a sensor and a battery as a power supply for the electronic circuit and the electromagnet are incorporated, the electronic magnet can be used anywhere without being limited by the location of the power supply.

Further, according to the valve device of the present invention, the sensor is isolated from the inside of the liquid passage and communicates with the outside of the liquid passage. The liquid flowing in the liquid passage can be reliably detected only when the liquid level reaches the sensor position without being erroneously detected.

[0010]

[Embodiment of the invention]

 Hereinafter, an embodiment of the valve device of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a tank connection portion, which is configured to be connected to a liquid discharge port (not shown) of a large tank. A valve section 2 is connected to and provided below the tank connection section 1. A cylindrical hollow portion 3 having a wide central portion and a narrow vertical portion is provided inside the valve portion 2, and a lower portion of the hollow portion 3 is a valve seat 4. The cavity 3 contains a ball 5 that moves freely inside the cavity 3, and the diameter D of the ball 5 is smaller than the center of the cavity 3 and larger than the top and bottom of the cavity 3. The valve is closed when the ball 5 is placed on the valve seat 4 below the cavity 3.

The lower part of the valve part 2 is connected with a hose-like liquid passage part 6 for guiding the liquid passing through the tank connecting part 1 and the valve part 2 from the liquid discharge port of the large tank to the small tank. The liquid passage 6 has a flexible bellows structure at the center. In addition, a sensor 7 for detecting the liquid level of the liquid is provided at the lower end inside the liquid passage 6. The sensor 7 is separated from the inside of the liquid passage 6 and communicates with the outside of the liquid passage 6, as shown in the partially enlarged sectional view of FIG. This structure allows the sensor 7 to detect the liquid flowing in the liquid passage portion 6 without erroneously detecting the liquid level only when the liquid level reaches the position of the sensor 7. The flowing liquid does not touch the sensor 7.

A valve opening / closing rod support portion 8 is provided on a side portion of the valve portion 2, and a valve opening / closing rod 9 is provided inside thereof. The valve opening / closing rod 9 has one end protruding into the hollow portion 3 and the other end protruding outside the valve opening / closing rod support portion 8, and is provided in a direction orthogonal to the vertical direction of the valve portion 2. It is supported by the valve opening / closing rod support 8 so that it can slide. Further, a spring 10 is provided on the valve opening / closing rod 9 inside the valve opening / closing rod support portion 8, and the valve opening / closing rod 9 is urged toward the outside of the valve opening / closing rod support portion 8 by the spring 10.

A manual lever support portion 11 is provided above the valve opening / closing rod support portion 8, and a manual lever 12 is attached rotatably about a support shaft 13. Below the support shaft 13, the manual lever 12 and the valve opening / closing rod 9 are connected by a connection shaft 14. When the manual lever 12 is rotated, the valve opening / closing rod 9 connected by the connection shaft 14 is pushed toward the cavity 3 and slides, and one end of the valve opening / closing rod 9 pushes the ball 5 and the ball 5 Is moved, and a gap is formed between the ball 5 and the valve seat 4 so that the valve portion 2 is turned from the closed state to the open state. At the lower end side of the manual lever 12 on the valve portion 2 side, a suctioned portion 15 made of a ferromagnetic material such as iron or nickel is provided. A switch contact portion 16 is attached to a lower portion of the valve opening / closing rod support portion 8 so as to be rotatable about a support shaft 17. One end of the switch contact portion 16 on the valve portion 2 side is housed inside the valve opening / closing rod support portion 8 and is urged downward by a spring 18 inside the valve opening / closing rod support portion 8. The other end of the switch contact portion 16 on the manual lever 12 side is curved downward, and is urged toward the manual lever 12 by a spring 18.

A pedestal portion 19 is provided below the valve opening / closing rod support portion 8 on the side of the valve portion 2, and a switch 20 is provided at a position facing the switch contact portion 16 on the upper side surface of the pedestal portion 19. An electromagnet 21 is provided on the lower side surface of the pedestal portion 19 at a position facing the sucked portion 15. The switch contact portion 16 is pushed by the side surface of the manual lever 12 and comes into contact with the switch 19 when the manual lever 12 is rotated and the attracted portion 15 contacts the electromagnet 21.

On the other hand, on the side of the valve section 2, an electronic circuit section 22 is provided at a position not in contact with the valve opening / closing rod support section 8 and the pedestal section 18. An electronic circuit (not shown) for controlling on / off of the electromagnet 21 based on a signal from the switch 20 and a battery (not shown) as a power supply required for the operation of the electronic circuit and the electromagnet 21 are stored.

Next, the operation of the present embodiment will be described.

First, the tank connection part 1 is firmly connected to a liquid outlet (not shown) of the large tank. Then, the lower end of the liquid passage 6 is inserted into a liquid filling port (not shown) of the small tank. Here, if the sensor 7 provided at the inner lower end of the liquid passage portion 6 is near a liquid filling port (not shown) of a small tank, there is a possibility that the liquid overflows, so that the sensor 7 is surely provided. Make sure it is inside the small tank.

Next, the manual valve (not shown) of the large tank is opened. Then, the lower part of the manual lever 12 is gripped together with the valve part 2, and the lower part of the manual lever 12 is turned around the support shaft 13 toward the valve part 2. As the lower portion of the manual lever 12 rotates toward the valve portion 2, the valve opening / closing rod 9 connected to the manual lever 12 via the connection shaft 14 slides toward the cavity portion 3 against the bias of the spring 10. I do. Then, one end of the valve opening / closing rod 9 protruding into the hollow portion 2 pushes the ball 5 placed on the valve seat 4, and a gap is formed between the ball 5 and the valve seat 4, so that the valve portion 2 is moved. The liquid is then opened, and the liquid from the liquid discharge port of the large tank starts flowing from the liquid filling port of the small tank into the small tank via the cavity 3 and the inside of the liquid passage 6.

Further, when the lower portion of the manual lever 12 is rotated toward the valve portion 2 around the support shaft 13, the attracted portion 15 provided on the valve side 2 at the lower end portion of the manual lever 12 is moved to the electromagnet 2. 1, the switch contact portion 16 is pushed against the side surface of the manual lever 12 against the bias of the spring 18, and rotates around the support shaft 17 to contact the switch 20. When the switch contact section 16 contacts the switch 20, a signal from the switch 20 is transmitted to the electronic circuit section 22, the electronic circuit section 22 starts supplying current to the electromagnet 21, and the electromagnet 21 is turned on. Then, the attracted portion 15 made of a ferromagnetic material such as iron or nickel is attracted to the electromagnet 21 and held in contact with the electromagnet 21 against the bias of the springs 10 and 18. As a result, the valve portion 3 is kept open.

When the subdivision of the liquid into the small tank proceeds smoothly and the liquid reaches the position of the sensor 7 at the lower end of the liquid passage 6 inserted into the small tank, the sensor 7 is immersed in the liquid. A signal is emitted, and the signal from the sensor 7 is transmitted to the electronic circuit unit 22, which acts to stop supplying current to the electromagnet 21. Then, when the supply of current to the electromagnet 21 is stopped, the attracted portion 15 is released from the attraction by the electromagnet 21, and the valve opening / closing rod 9 is slid toward the outside of the valve opening / closing rod support portion 8 by the bias of the spring 10. Then, the manual lever 12 connected by the connection shaft 14 is rotated, and the sucked portion 15 is separated from the electromagnet 21. At the same time, one end of the valve opening / closing rod 9 protruding into the hollow portion 2 is separated from the ball 5, and the ball 5 is placed on the original valve seat 4, so that the gap between the ball 5 and the valve seat 4 is eliminated. The close contact closes the valve portion 2 and interrupts the outflow of liquid from the large tank. On the other hand, the switch contact portion 16 rotates and separates from the switch 20 by the bias of the spring 18.

Note that the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention.

[0023]

[Effect of the invention]

 According to the valve device according to claim 1 of the present invention, in a valve device for dividing a liquid from a large tank to a small tank, a tank connecting portion 1 connected to a liquid outlet of the large tank and a lower portion of the tank connecting portion 1 are provided. A liquid passage portion 6 provided at a lower portion of the valve portion 2 for guiding liquid to a small tank, and a sensor 7 provided at a lower end portion of the liquid passage portion 6 for sensing a liquid level of the liquid. A manual lever 12 provided on the side of the valve unit 2 and urged to manually open and close the valve unit 2 and maintain the valve unit 2 in a closed state; Once the valve portion 2 is once opened by the manual lever 12 provided on the side of the valve portion 2, the manual lever 12 is held so as to maintain the open state of the valve portion 2 and in response to a signal from the sensor 7. The power to stop holding the manual lever 12 When the liquid is divided into large tanks and small tanks, the valve is automatically closed before the liquid overflows, even if monitoring is not performed, so that the liquid overflows, even if it is not monitored. Can be prevented.

According to the valve device of the present invention, a cylindrical hollow portion 3 having a wide central portion and a narrow vertical portion is provided inside the valve portion 2, and a lower portion of the hollow portion 3 is provided. Is a valve seat 4 and a ball 5 is accommodated in the cavity 3. The diameter D of the ball 5 is smaller than the center of the cavity 3 and larger than the top and bottom of the cavity 3. Since the valve portion 2 is configured to be closed in a state where the ball 5 is placed on the valve seat 4, the structure of the valve portion 2 is simple and the number of parts is small, so that the valve device can be provided at low cost. And maintenance can be facilitated.

According to the valve device of the third aspect of the present invention, a valve opening / closing rod support portion 8 is provided on the side of the valve portion 2, and the valve opening / closing rod support portion 8 is provided inside the valve opening / closing rod support portion 8. The valve opening / closing rod 9 is provided with one end protruding into the hollow portion 3 and the other end protruding outside the valve opening / closing rod support 8, and is provided toward the outside of the valve opening / closing rod support 8 by a spring 10. The manual lever 12 is urged to be mounted on the upper portion of the valve opening / closing rod support portion 8 via a manual lever support portion 11 so as to be rotatable about a support shaft 13, and a connection shaft 14 is provided below the support shaft 13. When the manual lever 12 is rotated, the valve opening / closing rod 9 is pushed toward the cavity 3 and slides, and one end of the valve opening / closing rod 9 is connected. When the ball 5 is pushed, a gap is created between the ball 5 and the valve seat 4, and the valve portion 2 is opened. Since the structure for opening and closing the valve portion 2 is simple and the number of parts is small, the valve device can be provided at low cost and maintenance can be facilitated.

According to the valve device of the fourth aspect of the present invention, the sucked portion 15 made of a ferromagnetic material is provided on the valve portion 2 side of the lower end side of the manual lever 12, and the valve opening / closing rod support portion 8 is provided. A switch contact portion 16 is rotatably provided at the lower portion of the base, and a pedestal portion 19 is provided below the valve opening / closing rod support portion 8. An electromagnet 21 is provided at a position of the pedestal portion 19 facing the suctioned portion 15. The switch 20 is provided at a position facing the switch contact portion 16 of the pedestal portion 19, so that when the manual lever 12 is rotated and the attracted portion 15 contacts the electromagnet 21, the switch contact portion 16 contacts the switch 20. Then, the electromagnet 21 is turned on, the attracted portion 15 is attracted by the electromagnet 21, and the electromagnet 21 is turned on only when the attracted portion 15 is in contact with the electromagnet 21, thereby minimizing the power for driving the electromagnet 21. To be able to.

According to the valve device of the fifth aspect of the present invention, the electronic circuit section 22 is provided on the side of the valve section 2, and the electromagnet 21 is connected to the electronic circuit section 22 by a signal from the switch 20. Since an electronic circuit which operates and stops the electromagnet 21 in response to a signal from the sensor 7 and a battery is provided as a power source for the electronic circuit and the electromagnet 21, it can be used anywhere without being limited by the location of the power source.

According to the valve device of the present invention, the sensor 7 is isolated from the inside of the liquid passage portion 6 and communicates with the outside of the liquid passage portion 6. The liquid flowing in the liquid passage 6 can be reliably detected only when the liquid level reaches the position of the sensor 7 without erroneous detection.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the valve device of the present invention.

FIG. 2 is a partially enlarged cross-sectional view showing a lower end portion of the liquid passage section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank connection part 2 Valve part 3 Cavity part 4 Valve seat 5 Ball 6 Liquid passage part 7 Sensor 8 Valve opening / closing rod support part 9 Valve opening / closing rod 10 Spring 11 Manual lever support part 12 Manual lever 13 Support shaft 14 Connection shaft 15 Suction target Part 16 Switch contact part 19 Pedestal part 20 Switch 21 Electromagnet 22 Electronic circuit part D Ball diameter

Claims (6)

[Utility model registration claims] 1. A valve device for subdividing a liquid from a large tank to a small tank, comprising: a tank connecting portion connected to a liquid outlet of the large tank; a valve portion provided below the tank connecting portion; A liquid passage portion provided at a lower portion of the liquid guide portion for guiding a liquid to a small tank; a sensor provided at a lower end portion of the liquid passage portion for detecting a liquid level of the liquid; and a valve portion provided at a side portion of the valve portion to manually operate the valve portion. A manual lever biased to be opened and closed and to maintain the valve portion in a closed state;
The manual lever is provided adjacent to the lower side of the manual lever and provided on the side of the valve unit.The manual lever holds the manual lever so as to maintain the open state of the valve unit once the valve unit is opened. An electromagnet that stops holding the manual lever in response to a signal from a sensor. 2. A cylindrical hollow portion having a wide central portion and a narrow vertical portion is provided inside the valve portion, and a lower portion of the hollow portion serves as a valve seat, and a ball is provided inside the hollow portion. The diameter of the ball is smaller than the center of the cavity and larger than the top and bottom of the cavity, so that the valve closes when the ball is placed on the valve seat. The valve device according to claim 1, wherein the valve device is configured as follows. 3. A valve opening / closing rod support portion is provided on a side portion of the valve portion, and a valve opening / closing rod is provided inside the valve opening / closing rod support portion, and one end of the valve opening / closing rod projects into the hollow portion. The other end is provided so as to protrude outside the valve opening / closing rod support portion, and is urged toward the outside of the valve opening / closing rod support portion by a spring. 3. The manual lever according to claim 2, wherein the manual lever is rotatably mounted around a support shaft, and the manual lever and the valve opening / closing rod are connected below the support shaft via a connection shaft. Valve device. 4. A suctioned portion made of a ferromagnetic material is provided on the valve portion side of a lower end portion of the manual lever, and a switch contact portion is rotatably provided below the valve opening / closing rod support portion. A pedestal portion is provided below the valve opening / closing rod support portion, an electromagnet is provided at a position of the pedestal portion facing the suctioned portion, and a switch is provided at a position of the pedestal portion facing the switch contact portion. The valve device according to claim 3, wherein the valve device is provided. 5. An electronic circuit portion provided on a side portion of the valve portion, wherein the electronic circuit portion activates the electromagnet by a signal from the switch and stops the electromagnet by a signal from the sensor; 5. The valve device according to claim 4, wherein a battery is incorporated as a power supply for the electronic circuit and the electromagnet. 6. The valve according to claim 1, wherein the sensor is isolated from the inside of the liquid passage and communicates with the outside of the liquid passage. apparatus.