CN214789367U - Limiting protection mechanism for partial rotary valve - Google Patents
Limiting protection mechanism for partial rotary valve Download PDFInfo
- Publication number
- CN214789367U CN214789367U CN202023147658.5U CN202023147658U CN214789367U CN 214789367 U CN214789367 U CN 214789367U CN 202023147658 U CN202023147658 U CN 202023147658U CN 214789367 U CN214789367 U CN 214789367U
- Authority
- CN
- China
- Prior art keywords
- valve
- ring
- rotary disc
- radial
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Preventing Unauthorised Actuation Of Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model relates to a part rotary valve limit protection mechanism, including location ring and gyration dish, its characterized in that sets up the boss on the location ring annular inner wall, and the boss lies in two sidelines scopes of location ring 90 degrees central angle, is equipped with two radial through-holes on the location ring, and two radial through-holes set up respectively on two sidelines of location ring 90 degrees central angle, are equipped with the telescopic indicator lever that is used for indicating valve department in opening, close position in two radial through-holes respectively; the rotary disc is positioned in the positioning circular ring and concentric with the positioning circular ring, a notch is formed in the outer edge of the rotary disc along the circumferential direction, the boss of the positioning circular ring is positioned in the notch space, the rotary angle of the rotary disc is larger than 90 degrees, and a hysteresis contact gap A is formed between the notch end face of the rotary disc and the boss end face of the positioning circular ring. The method is characterized in that: the valve limiting protection function is added, the safe and reliable operation of the system is guaranteed, the starting of the mechanical limiting protection lags behind the limiting control of the actuator module, the opening and closing positions of the valve can be visually displayed, and the valve limiting protection device is simple and compact in structure and easy to install.
Description
Technical Field
The utility model relates to a valve stop gear, especially a spacing protection mechanism of part rotary valve door.
Background
The existing partial rotary valves, such as ball valves, butterfly valves, plug valves and the like, mainly comprise a valve module and an actuator module. The rotation angle of a part of the rotary valve is usually 90 degrees, the opening and the closing of the valve are controlled by a travel switch of an actuator module, and a valve rod of the valve rotates within the range of 90 degrees. The problems of the single on-off control mode are as follows: when the actuator module stroke switch fails to work normally, the actuator module loses control over the position of the valve, and the valve cannot be opened or closed normally, so that the safety of system operation is directly influenced.
Disclosure of Invention
An object of the utility model is to provide a simple structure, safe and reliable, but the part gyration valve limit protection mechanism of visual indication valve opening, closed position state, it compensaties the not enough of the single limit control of valve actuator module, increases spacing protect function.
The purpose of the utility model is realized like this: a part rotary valve limit protection mechanism comprises a positioning ring and a rotary disc, and is characterized in that a positioning ring hole is an incomplete round hole, a boss is arranged on the inner wall of the ring hole, the boss is positioned in the range of two side lines of a 90-degree central angle of the positioning ring, two radial through holes are arranged on the positioning ring, the two radial through holes are respectively arranged on the two side lines of the 90-degree central angle of the positioning ring, and telescopic indicating rods for indicating the valve to be in an opening position and a closing position are respectively arranged in the two radial through holes; the rotary disc is positioned in the positioning circular ring and concentric with the positioning circular ring, the rotary disc is an incomplete disc, a notch is formed in the outer edge of the rotary disc along the circumferential direction, the boss of the positioning circular ring is positioned in the notch space, the rotary angle of the rotary disc is larger than 90 degrees, and a hysteresis contact gap A is formed between the end face of the notch of the rotary disc and the end face of the boss of the positioning circular ring opposite to the end face of the boss of the rotary disc.
The telescopic indicating rod is arranged in the radial through hole of the positioning circular ring, one end of the telescopic indicating rod extends into the positioning circular ring, the end part of the telescopic indicating rod is a spherical head, the other end of the telescopic indicating rod can extend out of the radial through hole of the positioning circular ring or shrink into the radial through hole of the positioning circular ring, a spring is arranged on the indicating rod, one end of the spring is supported on the spherical head, and the other end of the spring is supported on a spring gland which is in threaded connection with the radial through hole.
The positioning circular ring is arranged between the valve and the actuator and is connected with the valve and the actuator through mounting holes and connecting pieces which are circumferentially distributed on the positioning circular ring, and the rotary disc positioned in the positioning circular ring is arranged on the valve rod of the valve.
The outer edge of the end face of the gap of the rotary disc is provided with a gradually-entering chamfer.
The utility model is characterized in that: the valve limiting protection function is added, the safe and reliable operation of the system is guaranteed, the starting of the mechanical limiting protection lags behind the limiting control of the actuator module, so that the normal work of the valve cannot be influenced, the opening and closing positions of the valve can be visually displayed, the structure of the existing valve module and the actuator module does not need to be changed due to the arrangement of the mechanism, and the valve limiting protection mechanism is simple and compact in structure, low in manufacturing cost and easy to install.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the positioning ring of the present invention;
FIG. 3 is a schematic structural view of the rotary disk of the present invention;
fig. 4 is a schematic view of the installation structure of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, 2, 3 and 4, the utility model provides a part rotary valve limiting protection mechanism, which comprises a positioning ring 1, a rotary disc 2 and an indicating rod 3 for indicating the valve to be in the opening and closing position. The annular hole of the positioning ring is an incomplete circular hole, as shown in figure 2, a boss 6 which is protruded along the radial direction is arranged on the inner wall of the annular hole, the boss is positioned in the range of two sidelines 17 and 18 of the 90-degree central angle of the positioning ring, and the distances from the two ends of the boss to the sidelines are the same. Two radial through holes 14 and 15 are formed in the positioning circular ring, and the two radial through holes are arranged on two side lines 17 and 18 of the 90-degree central angle of the positioning circular ring, namely the central lines of the two radial through holes are respectively superposed with the two side lines of the 90-degree central angle of the positioning circular ring. The telescopic indicating rods 3 are respectively arranged on the two radial through holes, and are described by taking an installation structure as an example, the indicating rods are arranged in the radial through holes of the positioning circular ring, one end, namely the inner end, of each indicating rod extends into the positioning circular ring from the radial through hole, the end part of each indicating rod is a spherical head, and the other end, namely the outer end, of each indicating rod can extend out of the radial through hole of the positioning circular ring or shrink into the radial through hole of the positioning circular ring. The spring 4 is sleeved on the indicating rod, one end of the spring is abutted to the spherical head, the other end of the spring is abutted to the spring gland, and the spring gland 5 is in threaded connection with the radial through hole to limit the compression space of the spring. When the rotary disc rotates to the position of the indicating rod, the indicating rod is pushed to move outwards against the elastic force of the spring, the spring is compressed, and the outer end of the indicating rod moves out of the positioning ring, namely extends out through the spring gland and is used for indicating a position state of the valve. When the rotary disc is rotated to be separated from the indicating rod, the indicating rod moves inwards under the action of the spring, and the outer end of the indicating rod is retracted into the radial through hole. One indicating rod is used for indicating that the valve is in an open position state, and the other indicating rod is used for indicating that the valve is in a closed position state. The positioning ring is provided with mounting holes 9 distributed along the circumferential direction, and the positioning ring is fixedly connected between a flange 19 and an actuator 20 in the valve through a connecting piece 16, as shown in fig. 4.
The rotary disc is an incomplete disc, as shown in fig. 3, a notch 21 is arranged on the outer edge of the rotary disc along the circumferential direction, two end faces 10 and 11 of the notch are positioned on the same plane, and a mounting hole 12 is formed in the center of the rotary disc and used for mounting the rotary disc on a valve rod of a valve. The gyration dish sets up in the location ring, and with the location ring is concentric, and location ring boss is located the breach space of gyration dish, and the gyration angle of gyration dish is greater than 90 degrees. Through the setting of the rotation angle of the rotary disc and the position of the boss of the positioning ring, a hysteresis contact gap A is formed between the end face of the rotary disc and the end face of the boss of the positioning ring opposite to the end face of the boss of the positioning ring, and only when the rotation angle of the rotary disc is larger than 90 degrees, the end face 11 or 10 of the rotary disc is in contact with the end face 8 or 7 of the boss of the positioning ring, so that the limit protection is started. The outer edge of the end face of the gap of the rotary disc is provided with a gradually entering chamfer 13, which is convenient for pushing an indicating rod in the valve opening and closing position indicating mechanism.
The utility model discloses a set up spacing protection mechanism between flange and executor in the valve, need not change the structure of current valve module and executor module, the installation is simple and convenient, and the cost is low.
The utility model discloses be with executor module travel switch's work logic relation: the start of the limit protection mechanism lags behind the control of the actuator module travel switch on the opening and closing of the valve. The design of the rotary disc has a rotary angle exceeding 90 degrees, and meanwhile, a hysteresis contact gap is designed between the rotary disc and the positioning ring, when the actuator module works normally, the actuator module stroke switch controls the valve rod of the valve to rotate within a range of 90 degrees, and the valve is normally opened or closed. At this moment, a contact gap A is arranged between the rotary disc notch end face 11 and the positioning circular ring boss end face 8, and the rotary disc notch end face and the positioning circular ring boss end face are not in contact with each other, so that the utility model has no protection effect. When executor module travel switch is in abnormal operating condition, the gyration dish can continue to rotate along with the valve rod, and gyration dish breach terminal surface crosses contact gap and location ring boss terminal surface contact, and the restriction valve rod continues to rotate, realizes mechanical spacing protection to show the position state that the valve is in to open or close through the pilot lever that stretches out outside the location ring.
Claims (4)
1. A part rotary valve limit protection mechanism comprises a positioning ring and a rotary disc, and is characterized in that a positioning ring hole is an incomplete round hole, a boss is arranged on the inner wall of the ring hole, the boss is positioned in the range of two side lines of a 90-degree central angle of the positioning ring, two radial through holes are arranged on the positioning ring, the two radial through holes are respectively arranged on the two side lines of the 90-degree central angle of the positioning ring, and telescopic indicating rods for indicating the valve to be in an opening position and a closing position are respectively arranged in the two radial through holes; the rotary disc is positioned in the positioning circular ring and concentric with the positioning circular ring, the rotary disc is an incomplete disc, a notch is formed in the outer edge of the rotary disc along the circumferential direction, the boss of the positioning circular ring is positioned in the notch space, the rotary angle of the rotary disc is larger than 90 degrees, and a hysteresis contact gap A is formed between the end face of the notch of the rotary disc and the end face of the boss of the positioning circular ring opposite to the end face of the boss of the rotary disc.
2. The partially rotary valve position limiting and protecting mechanism of claim 1, wherein the telescopic indicating rod disposed in the radial through hole of the positioning ring has one end extending into the positioning ring and the other end being a spherical head, and the other end extending out of or retracting into the radial through hole of the positioning ring, and the indicating rod is provided with a spring, one end of the spring is abutted against the spherical head, and the other end is abutted against a spring gland screwed in the radial through hole.
3. The partially rotating valve position limiting protection mechanism of claim 1, wherein the positioning ring is disposed between the valve and the actuator and is connected to the valve and the actuator through mounting holes and connectors circumferentially disposed on the positioning ring, and the rotating disk disposed in the positioning ring is mounted on the valve stem.
4. The partially rotating valve limiting and protecting mechanism of claim 1, wherein the outer edge of the notched end surface of the rotating disk is provided with a gradually-entering chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023147658.5U CN214789367U (en) | 2020-12-24 | 2020-12-24 | Limiting protection mechanism for partial rotary valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023147658.5U CN214789367U (en) | 2020-12-24 | 2020-12-24 | Limiting protection mechanism for partial rotary valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214789367U true CN214789367U (en) | 2021-11-19 |
Family
ID=78721371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023147658.5U Active CN214789367U (en) | 2020-12-24 | 2020-12-24 | Limiting protection mechanism for partial rotary valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214789367U (en) |
-
2020
- 2020-12-24 CN CN202023147658.5U patent/CN214789367U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4518008A (en) | Quarter turn valve including supervisory switch assembly | |
| US4407326A (en) | Valve actuating mechanism | |
| US5564677A (en) | Linear actuator with force switch for detecting axial load | |
| US4270849A (en) | Rotary valve actuator construction | |
| US5329959A (en) | Locking device | |
| CA1169838A (en) | Butterfly valve | |
| US4133288A (en) | Device for indicating the operative position of a valve | |
| CN214789367U (en) | Limiting protection mechanism for partial rotary valve | |
| NO20160896A1 (en) | Dual seal fire safe stem packing orientation | |
| CN112539296A (en) | Limiting protection mechanism for partial rotary valve | |
| CA1324121C (en) | Valve override mechanism | |
| CN202629212U (en) | Gas ball valve | |
| US3460018A (en) | Power stop in response to overload | |
| CN210461864U (en) | Small-size electric actuator | |
| WO2000025028A1 (en) | Lockout device for valve actuators | |
| US20230096981A1 (en) | Transmission assembly for switchbox | |
| CN212297887U (en) | Locking structure of valve hand wheel | |
| CN219300064U (en) | Limiting mechanism of electric actuator and electric actuator | |
| EP3623674B1 (en) | Rotary valves | |
| CA1293962C (en) | Ball valve | |
| US5154395A (en) | Ball valve and actuator for operating valves and the like | |
| CN216479019U (en) | Measurement and control device for integrated protection tent overpressure adjustment | |
| CN220726714U (en) | Hydraulic valve with good safety | |
| US3344683A (en) | Actuating means adapter for quarterturn valves | |
| LU101907B1 (en) | Miniature electric actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |