KR20100049711A - Butterfly type regulating flow rate and check valve - Google Patents

Abstract

PURPOSE: A butterfly type flow control and check valve is provided to enable manual operation and thus to reduce the risk of failure and improve reliability. CONSTITUTION: A butterfly type flow control and check valve comprises a worm gear wheel(11), a worm gear shaft(13) and a clutch device(10). The worm gear wheel is formed on the other end of a shaft in which a weight is supported on one end. The worm gear shaft comprises a worm gear(12) engaged with the worm gear wheel. The clutch device clamps or releases the worm gear shaft. The worm gear shaft is equipped with a manipulation wheel(15) and has a structure engaging with the worm gear wheel.

Description

Butterfly type regulating flow rate and check valve

The present invention relates to a combined valve of a simple structure that can be used as a flow control valve or a non-return valve, and more particularly includes a valve opening and closing clutch device for forcibly opening and closing a disk, and when the worm gear shaft is engaged with the clutch, The flow of the shaft and the disk associated with the worm gear shaft is stopped to force the opening and closing of the disk, and when the worm gear shaft is released, the shaft and the disk associated with the worm gear shaft flow in accordance with the flow of fluid to block backflow. Butterfly type flow control and check valve.

In general, various types of valves such as ball valves, globe valves, butterfly valves, etc. are used to control the flow rate in the industry. Among them, the butterfly valve is used for the purpose of preventing a backflow in the pipeline because the disk embedded in the valve body flows along the shaft.

The butterfly valve is a concentric butterfly valve in which the shaft is formed horizontally in the center of the valve body according to the position of the shaft supporting the disk, and the eccentric butter in which the shaft is eccentrically formed at the top from the fluid passage center line of the valve body. The fly valve is largely classified. Among them, an eccentric butterfly valve having a better flow control characteristic is mainly used.

Referring to FIGS. 1 and 2, a disk 22 capable of closing the conduit in a cylindrical conduit of the valve body 21 is rotatably disposed in an angular range by an eccentric shaft 23, and the shaft ( At one end of the arm 23 is formed a weight 24 supported by the arm and a dash port 25 to alleviate the sudden rotation of the disk 22, and a stopper for maintaining the disk 22 completely closed in the event of backflow. And eccentric butterfly valves with sealing inside the pipeline for airtightness are widely used, and research and development are actively underway to improve or actively utilize the characteristics of such eccentric butterfly valves. An improved butterfly valve is provided. For example, in Korean Utility Model Publication No. 20-0214850 (designation name: butterfly type check valve), a valve disc with a shaft formed eccentrically at the top from the fluid passage centerline of the valve body so as to be freely opened according to the flow of the fluid. And a butterfly check valve having an auxiliary disk for absorbing a fluid shock. The butterfly check valve has a simple structure and a very excellent function of preventing backflow, but lacks a function of forcibly opening and closing the valve disc and the auxiliary disc to adjust the flow rate.

In addition, Korea Patent Publication No. 10-0646048 (name of the invention: butterfly-type two-way check valve) in the main disk is formed in the shaft eccentrically from the top of the fluid passage center line of the valve body so as to open freely according to the flow of the fluid, and Disclosed is a butterfly type two-way check valve having an auxiliary check valve formed on an upper portion of the shaft. The butterfly type two-way check valve can open the main disk quickly and reduce the load on the main disk by opening and closing the auxiliary disk, thereby reducing the impact on the main disk and the valve body. There is a problem in that the function of adjusting the flow rate by forcibly opening and closing the check valve is lacking.

In addition, Korea Patent Publication No. 10-0572341 (name of the invention: check valve integrated butterfly valve) in the valve body is integrally molded with the disk for the butterfly valve and the check valve disk to provide a flow control and backflow prevention function Butter valve integrated butterfly valve is disclosed, but such a valve is simply a combination of the butterfly valve and the check valve on the pipeline, and the manufacturing cost of the two types of valves separately increases, the volume of the overall valve system It also has the problem of greatly increasing.

In addition, in Korean Patent Laid-Open Publication No. 2004-40956 (name of the invention: hydraulic check valve), when the hydraulic fluid flows into the disk opening and closing cylinder and the clutch cylinder, the disk is closed by hydraulic pressure. A hydraulic check valve configured to close by the weight of a weight is disclosed. The hydraulic check valve has both a flow control and a backflow prevention function, but includes a disk opening cylinder and a clutch cylinder using hydraulic pressure for opening and closing the valve, and thus the structure is very complicated, thereby increasing manufacturing and maintenance costs. Therefore, the economical efficiency is lowered, and there is a problem that the possibility of failure or malfunction of the cylinders remains.

In addition, Korean Laid-Open Patent Publication No. 2008-72194 (name of the invention: pump-controlled eccentric blocking butterfly valve) is forcibly driven by a motor and configured to be closed by reverse water pressure when power transmission from the motor is stopped. A pump controlled eccentric shutoff butterfly valve comprising a disc is disclosed. The pump-controlled eccentric blocking butterfly valve has both a flow control function and a backflow prevention function, but it has a problem that the economy is lowered because the structure is complicated because the motor for opening and closing the valve is included and the manufacturing cost and maintenance cost increase accordingly. have.

In addition, Korean Utility Model Publication No. 1997-52267 (design name: butterfly valve type rod valve) is a cam valve by a cam fixed to one side of a shaft, and a worm gear for the purpose of reducing the rotational speed of the valve disc. The butterfly valve type rod valve which can control the closing speed of a valve disc by the said cam valve and a worm gear is installed. The butterfly valve type rod valve includes a cylinder using hydraulic pressure to open and close the valve, and thus, the structure is very complicated, and manufacturing cost and maintenance cost increase, thereby lowering the economical efficiency. There is a problem that such possibility exists.

Accordingly, an object of the present invention is to bind the worm gear shaft with a clutch to stop the flow of the shaft and disk associated with the worm gear shaft to force the opening and closing of the disk, and to release the binding of the worm gear shaft associated with the worm gear shaft It is to provide a butterfly-type flow control and check valve of the simple structure that can be used as a flow control valve or a non-return valve by the flow of the shaft and the disk to block the flow back.

In order to achieve the above object, the present invention is a worm gear wheel formed at the end of the shaft rotatably supporting the disk; A worm gear shaft having a worm gear meshed with the worm gear wheel; And a clutch opening / closing clutch device including a clutch configured to engage or release the worm gear shaft.

Butterfly type flow control and check valve according to the present invention can be forced to open and close the disk by manually binding the worm gear shaft by clutch, can be used as a combined valve of flow control or backflow prevention by blocking the release of the worm gear shaft. have.

In addition, the butterfly-type flow control and check valve of the present invention is very simple in structure to reduce the manufacturing cost, can be operated by hand, the probability of failure is small and excellent in reliability.

According to the present invention, a disk capable of closing the conduit in a cylindrical conduit of the valve body is rotatably disposed in an angular range by an eccentric shaft. An eccentric butterfly valve having a damping dash port formed therein and a stopper for keeping the disk completely closed in case of a backflow and a seal inside the pipeline for airtightness, forcibly opening and closing the disk to flow into the pipeline. It has a characteristic that the valve opening and closing clutch device that can control the flow rate of the fluid or flow the disk to block the back flow.

The present invention will be described in detail with reference to the drawings and examples.

Figure 3 shows the overall structure of the butterfly flow control and check valve according to the present invention, Figure 4 shows in detail the drive portion of the butterfly flow control and check valve of the present invention, Figure 5 The clutch device included in the butterfly flow control and check valve of the present invention is shown in detail.

3 to 5, the valve opening and closing clutch device 10 configured in the butterfly flow control and check valve of the present invention includes a worm gear wheel formed at the end of the shaft.

A disk 22 capable of closing the conduit is formed in the cylindrical conduit of the valve body 21, and an eccentric shaft 23 supporting the disk 22 is upward from the fluid passage centerline of the valve body 21. A dash port disposed eccentrically to mitigate abrupt rotation of the weight 24 and the disk 22 supported by an arm at one end of the eccentric shaft 23 eccentrically arranged so as to be rotatable in the predetermined angular range ( 25 is formed, and a fixed diameter worm gear wheel 11 is formed at the other end of the shaft 23 so that the worm gear wheel 11 and the shaft 23 rotate simultaneously.

As described above, when an external force is applied to the worm gear wheel 11 having a constant diameter fixed to the end of the shaft 23 in a specific direction or the opposite direction, the shaft 23 on which the worm gear wheel 11 is formed is forced to rotate and the disk While the disk 22 supported by the 22 is forced open or closed, the flow rate of the fluid flowing in the conduit is adjusted, whereas if no external force is applied to the worm gear wheel 11, the shaft on which the worm gear wheel 11 is formed is formed. 23) and the disk 22 are naturally open or closed by the flow of the fluid to prevent backflow of the fluid flowing in the conduit.

Specifically, when an external force is applied to the worm gear wheel 11 having a constant diameter fixedly formed at the end of the shaft 23 in a specific direction, the shaft 23 on which the worm gear wheel 11 is formed is forcibly rotated in a specific direction and the shaft ( The disk 22 supported by 23 is forcibly opened so that fluid flows in the forward direction in the pipeline, and when an external force is applied to the worm gear wheel 11 of a constant diameter in the opposite direction, the shaft 23 on which the worm gear wheel 11 is formed is formed. ) Is forcibly rotated in the opposite direction and the disk 22 supported on the shaft 23 is forcibly closed to stop the flow of the fluid in the conduit, thereby acting as a flow control valve for regulating or stopping the flow of the fluid flowing in the conduit. Will be performed.

In contrast to the above, if no external force is applied to the fixed diameter worm gear wheel 11 and the shaft 23 formed at the end of the shaft 23, the disk 22 supported on the shaft 23 is Rather than forcibly opening and closing, the disk 22 naturally opens or closes naturally by the direction and pressure of the fluid flowing in the conduit to serve as a check valve to prevent backflow of the fluid flowing in the conduit. do. That is, in a state in which no external force is applied to the worm gear wheel 11 formed at the end of the shaft 23, when the fluid flows in the pipeline in the forward direction, the worm gear wheel 11 and the shaft 23 are driven by the positive pressure of the fluid. While the supported disk 22 is naturally open, when the fluid flows in a reverse direction in the conduit, the disk supported on the worm gear wheel 11 and the shaft 23 by the backflow pressure of the fluid and the load applied from the weight 24 ( 22) is naturally closed to prevent backflow of fluid in the conduit.

As described above, the external force applied in both directions to the worm gear wheel 11 formed at the end of the shaft 23 is provided from the worm gear 12 engaged with the worm gear wheel 11.

In addition, the valve opening and closing clutch device 10 of the butterfly flow control and check valve of the present invention includes a worm gear shaft 13 is formed with a worm gear 12 to be engaged with the worm gear wheel (11).

A worm gear 12, which is engaged with the worm gear wheel 11 formed at the end of the shaft 23 and provides an external force in a specific direction or the opposite direction, is formed, and a worm gear shaft having a predetermined length for supporting and operating the worm gear 12. (13) is formed. That is, a worm gear 12 is formed at any part of the worm gear shaft 13 having a predetermined length, and a structure in which the worm gear wheel 11 is engaged with the worm gear 12 is formed, and an external force is generated from the worm gear 12. When applied, the worm gear wheel 11 and the shaft 23 simultaneously rotate in a specific direction or the opposite direction.

Specifically, when the worm gear shaft 13 and the worm gear 12 supported by the worm gear shaft 13 rotate in a specific direction and an external force is applied to the worm gear wheel 11 meshed with the worm gear 12, the worm gear While the wheel 11 and the shaft 23 are simultaneously rotated in a specific direction and the disk 22 supported on the shaft 23 is forcibly opened to allow fluid to flow in the pipeline in the forward direction, the worm gear shaft 13 and the When the worm gear 12 supported by the worm gear shaft 13 rotates in the opposite direction and an external force is applied to the worm gear wheel 11 engaged with the worm gear 12, the worm gear wheel 11 and the shaft 23 At the same time, the disk 22, which is rotated in the opposite direction and supported by the shaft 23, is forcibly closed to stop the flow of fluid in the conduit.

In addition, when no external force is applied to the worm gear wheel 11 from the worm gear shaft 13 and the worm gear 12 supported by the worm gear shaft 13, the worm gear wheel 11 and the shaft 23 may flow. The disc 22 supported on the shaft 23 is naturally opened or closed by the flow of the fluid to prevent backflow of the fluid flowing in the conduit. However, when no external force is applied to the worm gear wheel 11 from the worm gear 12 and the shaft 23 and the worm gear wheel 11 flow, the worm gear 12 and the worm gear shaft engaged with the worm gear wheel 11 13) will idle.

An operation wheel 15 for driving the worm gear shaft 13 is formed at one end of the worm gear shaft 13 as described above, and the worm gear shaft 13 is attached to the other end of the worm gear shaft 13. A clutch 14 for releasing is formed.

In addition, the valve opening and closing clutch device 10 configured in the butterfly flow control and check valve of the present invention includes a clutch 14 formed to engage or release the worm gear shaft 13.

An end portion of the worm gear shaft 13 includes a worm gear shaft 13 and a clutch 14 for applying an external force to the worm gear wheel 11 from the worm gear 12 supported by the worm gear shaft 13 or releasing the applied external force. And a clutch lever 16 for operating the clutch 14 is formed and exposed to the outside of the clutch box 17.

When the worm gear shaft 13 is engaged with the clutch 14, the worm gear wheel 11 supported by the worm gear shaft 13 is driven in a specific direction or the opposite direction and engaged with the worm gear 12. External force is applied in both directions, and the shaft 23 on which the worm gear wheel 11 is formed is forcibly rotated so that the disk 22 supported on the disk 22 is forcibly opened or forcibly closed and Configured to regulate the flow rate. Then, when the binding of the worm gear shaft 13 by the clutch 14 is released, no external force is applied to the worm gear wheel 11 and the shaft 23 from the worm gear 12 supported by the worm gear shaft 13. In this state, the disk 22 supported on the shaft 23 is not forcibly opened and closed, but the disk 22 is naturally opened or naturally closed by the direction and pressure of the fluid flowing in the conduit. It is composed.

Specifically, in the state where the worm gear shaft 13 is engaged with the clutch 14 by operating the clutch lever 16 in a specific direction, the worm gear shaft 13 is operated by operating the operation wheel 15 in a specific direction. When forced to rotate in a specific direction, an external force is applied to the worm gear wheel 11 engaged with the worm gear 12 of the worm gear shaft 13 in a specific direction so that the worm gear wheel 11 and the shaft 23 simultaneously move in a specific direction. While rotating, the disk 22 supported on the shaft 23 is forcibly opened so that fluid flows in the forward direction in the conduit, while the worm gear shaft 13 is engaged with the clutch 14. When the worm gear shaft 13 is rotated in the opposite direction by operating 15) in the opposite direction, an external force is applied to the worm gear wheel 11 engaged with the worm gear 12 of the worm gear shaft 13 in the opposite direction. Worm gear wheel (1 1) and the shaft 23 are rotated in the opposite direction at the same time, the disk 22 supported on the shaft 23 is forcibly closed to stop the flow of fluid in the conduit to adjust or stop the flow of fluid flowing in the conduit To serve as a flow control valve.

In contrast to the above, when the clutch lever 16 is operated in the opposite direction to release the worm gear shaft 13 by the clutch 14, the worm gear wheel from the worm gear shaft 13 and the worm gear 12 is removed. External force is not applied to the 11 and the shaft 23, so that the disk 22 supported on the shaft 23 is not forcibly opened and closed, but the disk 22 is It naturally opens or closes naturally by direction and pressure to serve as a check valve to prevent backflow of fluid flowing in the conduit.

The worm gear wheel 11, the worm gear shaft 13, and the clutch 14, which are the main components of the present invention, are embedded in the clutch box 17, and the wheel 15 and the clutch 14 for operating the worm gear shaft 13 are provided. The clutch lever 16 for manipulating () is exposed to the outside of the clutch box 17, and used as a flow control valve according to the operation of the clutch lever 16 and the operation wheel 15 or It can be used as a non-return valve.

The valve opening and closing clutch device 10 and the butterfly type flow control and check valve including the same as described above have a very simple structure, which reduces manufacturing costs, and can be operated by hand, so that the possibility of failure is small and reliable. Excellent

1 is a perspective structural diagram of a conventional eccentric butterfly valve

2 is a side cross-sectional view of a conventional eccentric butterfly valve

Figure 3 is an overall view of a butterfly flow control and check valve according to the present invention

Figure 4 is a detailed view of the drive portion of the butterfly flow control and check valve of the present invention

5 is a detailed view of the clutch device of the butterfly-type flow control and check valve of the present invention

* Explanation of symbols for the main parts of the drawings

10 clutch device 11: worm gear wheel

12: worm gear 13: worm gear shaft

14 clutch 15 operation wheel

16: clutch lever 17: clutch box

21: body 22: disc

23 shaft 24 weight

25: dashpot

Claims (2)

A disk capable of closing the conduit is rotatably disposed by the shaft in a cylindrical conduit of the valve body, and at one end of the shaft, a weight supported by the arm and a dash port for mitigating abrupt rotation of the disk are formed, and countercurrent An eccentric butterfly valve, in which a stopper for maintaining a completely closed state of the disk and a seal inside a conduit for airtightness are formed, when A worm gear wheel formed at the other end of the shaft; A worm gear shaft having a worm gear meshed with the worm gear wheel; And Butterfly type flow control and check valve comprising a clutch device for opening and closing the valve formed of a clutch formed to engage or release the worm gear shaft. The butterfly flow control and check valve according to claim 1, wherein an operating wheel is formed on the worm gear shaft.

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