CN213929668U - Valve locking device - Google Patents

Abstract

The utility model provides a valve blocking device. The valve lockout device includes: the lock shell is provided with an accommodating cavity and is connected with the valve; at least one part of the transmission component is movably arranged in the accommodating cavity, and one end of the transmission component is connected with a valve rod of the valve; the locking assembly is provided with an unlocking state and a locking state, and when the locking assembly is in the locking state, the transmission assembly is recovered into the accommodating cavity and locked by the locking assembly, so that the valve rod cannot be operated through the transmission assembly; when the locking assembly is in an unlocking state, the locking assembly releases the locking of the transmission assembly, at least one part of the transmission assembly can move along the axial direction of the transmission assembly and stretch out of the outer side of the accommodating cavity, and the valve rod can be driven to rotate through the transmission assembly. The utility model provides an among the prior art valve blocking device can't show the block state and suffer violence rotation valve easily and destroyed problem.

Description

Valve locking device

Technical Field

The utility model relates to a valve equipment field particularly, relates to a valve blocking device.

Background

At present, valves in petrochemical industry and hydropower station industry are in an unlocked state, so that potential safety hazards are caused. Some valve blocking devices in the existing market mostly achieve blocking through directly blocking a rotating shaft or a limiting sheet, many valves on the spot are very laborious to rotate due to internal reasons, if no obvious state shows that the lock is opened or closed, an operator can mistakenly think that the valve is blocked by rotation, and the valve is rotated by brute force, so that the blocking device is damaged.

Therefore, the valve locking device in the prior art cannot display the locking state and is easy to damage by violently rotating the valve.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a valve locking device to solve the problem that the valve locking device in the prior art cannot display the locking state and is easily damaged by violent rotation of the valve.

In order to achieve the above object, according to an aspect of the present invention, there is provided a valve shutting device comprising: the lock shell is provided with an accommodating cavity and is connected with the valve; at least one part of the transmission component is movably arranged in the accommodating cavity, and one end of the transmission component is connected with a valve rod of the valve; the locking assembly is provided with an unlocking state and a locking state, and when the locking assembly is in the locking state, the transmission assembly retracts into the accommodating cavity and is locked by the locking assembly, so that the valve rod cannot be operated through the transmission assembly; when the locking assembly is in an unlocking state, the locking assembly releases the locking of the transmission assembly, at least one part of the transmission assembly can move along the axial direction of the transmission assembly and stretch out of the outer side of the accommodating cavity, and the valve rod can be driven to rotate through the transmission assembly.

The transmission assembly comprises a first transmission shaft and a second transmission shaft which are coaxially arranged, the transmission assembly further comprises a reset piece arranged between the first transmission shaft and the second transmission shaft, the first transmission shaft can drive the second transmission shaft to rotate, the first transmission shaft is provided with a first locking hole and a second locking hole, when the transmission assembly is in an unlocking state, one end of the first transmission shaft extends out of the lock shell, and the reset piece is used for providing reset force extending out of the lock shell for the first transmission shaft; one end of the second transmission shaft, which is far away from the first transmission shaft, is connected with the valve rod.

Further, one end of the first transmission shaft near the second transmission shaft is inserted into the interior of the second rotation shaft.

Furthermore, one end of the first transmission shaft, which is close to the second transmission shaft, is provided with a special-shaped bulge, and one end of the second transmission shaft, which is close to the first transmission shaft, is provided with a special-shaped groove matched with the special-shaped bulge; or one end of the first transmission shaft close to the second transmission shaft is provided with a special-shaped groove, and one end of the second transmission shaft close to the first transmission shaft is provided with a special-shaped bulge matched with the special-shaped groove.

Furthermore, the transmission assembly further comprises a shaft sleeve, the shaft sleeve is arranged at one end, away from the second transmission shaft, of the first transmission shaft, a connecting protrusion is arranged at one end, away from the second transmission shaft, of the first transmission shaft, the shaft sleeve is provided with a yielding hole avoiding the connecting protrusion, and the connecting protrusion can penetrate through the shaft sleeve through the yielding hole and extend out of the lock shell.

Furthermore, the transmission assembly further comprises a retainer ring sleeved on the outer side wall of the shaft sleeve, a shaft sleeve mounting hole is formed in the lock shell, the shaft sleeve is arranged at the position of the shaft sleeve mounting hole, the outer side wall of the shaft sleeve is provided with a first mounting groove matched with the retainer ring, and the inner side wall of the shaft sleeve mounting hole is provided with a second mounting groove matched with the retainer ring.

Furthermore, the transmission assembly further comprises a switching block, one end of the switching block is connected with the valve rod, the other end of the switching block is connected with one end, far away from the first transmission shaft, of the second transmission shaft, and the switching block is provided with at least one group of side walls which are parallel relatively.

Further, the locking component is provided with a locking component which is movably arranged and extends towards the transmission component, the locking component is provided with a limiting position and a yielding position, and when the locking component is in the limiting position, the locking end of the locking component is clamped with the transmission component so that the transmission component is kept in a locking state and the movement of the transmission component is limited; when the locking piece is switched from the limiting position to the yielding position, the locking piece releases the limitation on the movement of the transmission assembly, and the transmission assembly is switched from the locking state to the unlocking state.

Further, the direction of movement of the latch is perpendicular to the axial direction of the transmission assembly.

Furthermore, the transmission component is provided with a first locking hole and a second locking hole which are arranged at intervals along the rotation direction of the transmission component, and when the locking piece is at the limiting position, the locking end of the locking piece extends into the first locking hole so as to lock the transmission component and keep the valve in an open state; or the latching end of the latch member extends into the second latching aperture to latch the drive assembly and maintain the valve in the closed condition.

Furthermore, the valve locking device also comprises a circuit module, the circuit module comprises a battery and a circuit board which are electrically connected, and a first reed switch and a second reed switch which are respectively electrically connected with the circuit board, the transmission assembly also comprises two magnetic steels, and when the valve is in a closed state, the first reed switch and the second reed switch are respectively induced with different magnetic steels; when the valve is in an open state, the two magnetic steels are only inducted with the first reed pipe or the second reed pipe.

Furthermore, the transmission assembly is provided with a transmission gear, the outer side wall of a second transmission shaft of the transmission assembly is provided with a gear section meshed with the transmission gear, the two magnetic steels are arranged on the transmission gear at intervals, and when the transmission assembly drives the valve rod to rotate and enables the valve to be switched between the opening state and the closing state, the transmission gear drives the two magnetic steels to rotate and enables the two magnetic steels to be respectively sensed by the first reed pipe or the second reed pipe.

Furthermore, the circuit module also comprises a potentiometer in signal connection with the circuit board, and the transmission gear drives the potentiometer to rotate.

Furthermore, the circuit module further comprises a detection piece electrically connected with the circuit board, a sensing piece is arranged on the first transmission shaft of the transmission assembly, and the sensing piece senses the detection piece when the transmission assembly is in a locking state.

Further, the latch assembly further comprises: a lock cylinder body; and one end of the rotating tongue is in driving connection with the lock cylinder body so that the lock cylinder body can drive the rotating tongue to rotate, and the other end of the rotating tongue extends into the locking piece and drives the locking piece to switch between the limiting position and the abdicating position.

Furthermore, the locking piece is of a sheet structure and is provided with a driving groove, one end, far away from the lock cylinder body, of the rotating tongue extends into the driving groove and abuts against the inner side wall of the driving groove, the locking end of the locking piece is provided with a limiting protrusion extending towards the transmission component, and at least one part of the limiting protrusion can extend into or withdraw from the first locking hole or the second locking hole of the transmission component respectively.

Further, the lock shell comprises an upper shell and a lower shell, the upper shell and the lower shell cover each other to form an accommodating cavity, the upper shell is provided with a shaft sleeve mounting hole and a locking component mounting hole, one side of the lower shell, facing the upper shell, is provided with a limiting groove, and a locking piece is movably arranged in the limiting groove.

Furthermore, the locking device also comprises a mounting rack which is sleeved on the valve and is connected with the lower shell.

Furthermore, the circumferential outer side wall of the first transmission shaft is provided with at least one hand feeling limiting hole, the hand feeling limiting hole is close to the second transmission shaft relative to the first locking hole or the second locking hole, the hand feeling limiting hole is provided with a guiding curved surface, and when the transmission assembly is switched to an unlocking state from a locking state, the limiting bulge can stretch into the hand feeling limiting hole.

Further, the valve locking device further comprises a communication unit, the communication unit is in signal connection with the detection piece, when the detection piece senses the sensing piece, the detection piece sends a signal to the communication unit, and the communication unit sends the received signal to the control background.

Use the technical scheme of the utility model, valve blocking device in this application is including lock shell, drive assembly and shutting subassembly. The lock shell is provided with an accommodating cavity and is connected with the valve; at least one part of the transmission assembly is movably arranged in the accommodating cavity, and one end of the transmission assembly is connected with a valve rod of the valve; the locking assembly has an unlocking state and a locking state, when the locking assembly is in the locking state, the transmission assembly retracts into the accommodating cavity and is locked by the locking assembly, and the valve rod cannot be operated through the transmission assembly; when the locking assembly is in an unlocking state, the locking assembly releases the locking of the transmission assembly, at least one part of the transmission assembly can move along the axial direction of the transmission assembly and stretch out of the outer side of the accommodating cavity, and the valve rod can be driven to rotate through the transmission assembly.

When the valve locking device with the structure is used, the transmission assembly and the locking assembly are arranged, so that the valve rod of the valve can be connected through the transmission assembly, and the valve rod is driven to rotate through the transmission assembly to realize the switching of the opening and closing states of the valve. And can realize the locking to the drive assembly through the locking subassembly to prevent operating personnel to the operation of valve rod, and then realize the locking to the valve. Also, in the present application, when the lockout assembly is in the lockout state, the operator can determine that the valve lockout device has locked the valve by observing that the transmission assembly has been retracted into the receiving cavity. And when the locking assembly is in the unlocking state and an operator completes the switching of the valve state, the transmission assembly can be locked by the locking assembly to keep the valve in the current state. Consequently, the problem of the unable locking state that shows of valve blocking device among the prior art has been solved effectively to the valve blocking device in this application, and drive assembly retracts to holding the chamber simultaneously, and the operator can't operate the valve rod through drive assembly, and the operator violently rotates the valve pivot and destroys valve blocking device's problem when also having solved the shutting.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a valve blocking device according to an embodiment of the present invention;

FIG. 2 shows an exploded view of the valve lockout device of FIG. 1;

FIG. 3 shows a schematic view of a first drive shaft of the valve lockout device of FIG. 2;

FIG. 4 illustrates a cross-sectional view of the valve lockout device of the present application with the valve closed and the lockout assembly of the valve lockout device in the lockout state;

FIG. 5 shows a cross-sectional view A-A of FIG. 4;

FIG. 6 illustrates a cross-sectional view of the valve lockout device of the present application with the valve closed and the lockout assembly of the valve lockout device unlocked;

FIG. 7 shows a cross-sectional view B-B of FIG. 6;

FIG. 8 illustrates a cross-sectional view of the valve lockout device of the present application with the valve in an open state and the lockout assembly of the valve lockout device in a lockout state;

FIG. 9 shows a cross-sectional view C-C of FIG. 8;

FIG. 10 illustrates a cross-sectional view of the valve lockout device of the present application with the valve in an open state and the lockout assembly of the valve lockout device in an unlocked state;

FIG. 11 shows a cross-sectional view D-D of FIG. 10;

fig. 12 shows a schematic view of the position of the valve locking device and the valve in the present application.

Wherein the figures include the following reference numerals:

10. a lock case; 11. a shaft sleeve mounting hole; 12. an upper housing; 13. a lower housing; 14. a locking assembly mounting hole; 20. a transmission assembly; 21. a first latching aperture; 22. a second latching aperture; 23. a first drive shaft; 231. irregular bulges; 232. a connecting projection; 233. a sensing member; 234. a hand feeling limiting hole; 24. a second drive shaft; 241. a special-shaped groove; 242. a gear segment; 25. a reset member; 26. a shaft sleeve; 261. a hole of abdication; 27. a retainer ring; 28. a transfer block; 29. magnetic steel; 291. a transmission gear; 30. a locking assembly; 31. a latch; 311. a drive slot; 312. a limiting bulge; 32. a lock cylinder body; 33. turning the tongue; 40. a circuit module; 41. a battery; 42. a circuit board; 43. a first reed switch; 44. a second reed switch; 45. a potentiometer; 46. a detection member; 50. and (7) mounting frames.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve among the prior art valve blocking device can't show the shutting state and suffer violence easily and rotate the valve and destroyed problem, this application provides a valve blocking device.

As shown in fig. 1 and 12, the valve lockout device of the present application includes a lock housing 10, a transmission assembly 20, and a lockout assembly 30. The lock shell 10 is provided with an accommodating cavity, and the lock shell 10 is connected with a valve; at least one part of the transmission assembly 20 is movably arranged in the accommodating cavity, and one end of the transmission assembly 20 is connected with a valve rod of the valve; the locking assembly 30 has an unlocking state and a locking state, when the locking assembly 30 is in the locking state, the transmission assembly 20 retracts to the accommodating cavity and is locked by the locking assembly 30, and an operator cannot operate the valve rod through the transmission assembly 20; when the locking assembly 30 is in the unlocking state, the locking assembly 30 unlocks the transmission assembly 20, at least one part of the transmission assembly 20 can move along the axial direction of the transmission assembly 20 and extend out of the accommodating cavity, and an operator can drive the valve rod to rotate by operating the transmission assembly 20.

When the valve locking device with the structure is used, the transmission assembly 20 and the locking assembly 30 are arranged, so that the transmission assembly 20 can be connected with the valve rod of the valve, and the transmission assembly 20 drives the valve rod to rotate to realize the switching of the opening and closing states of the valve. The locking assembly 30 can lock the transmission assembly 20, so as to prevent an operator from operating the valve rod, and further lock the valve. Also, in the present application, when the lockout assembly 30 is in the lockout state, the operator can determine that the valve lockout device has locked the valve by observing that the drive assembly 20 has been retracted into the receiving cavity. And, after the latch assembly 30 is in the unlocked state and the operator completes the switching of the valve state, the valve can be maintained in the current state by locking the transmission assembly 20 by the latch assembly 30. Therefore, the problem that valve blocking device can't show the shutting state among the prior art has been solved effectively to the valve blocking device in this application, and transmission assembly 20 retracts to holding the chamber simultaneously, and the operator can't operate the valve rod through transmission assembly 20, and the operator violently rotates the valve pivot and destroys valve blocking device's problem when also having solved the shutting.

In one embodiment of the present application, the locking assembly 30 is disposed outside the lock housing 10, and the locking assembly 30 can extend into or out of the lock housing 10 to lock or unlock the transmission assembly 20. Also, when the locking assembly is extended into the lock case 10, the locking assembly 30 can lock the transmission assembly 20 and be in a locked state, and when the locking assembly 30 is withdrawn out of the lock case 10, the locking assembly 30 unlocks the transmission assembly 20 and is in an unlocked state.

As shown in fig. 2, the latch assembly 30 has a latch member 31, the latch member 31 is movably disposed and extends toward the transmission assembly 20, the latch member 31 has a limiting position and a yielding position, and when the latch member 31 is in the limiting position, a latching end of the latch member 31 is engaged with the transmission assembly 20 to keep the transmission assembly 20 in a latching state and limit the movement of the transmission assembly 20; when the locking member 31 is switched from the limiting position to the avoiding position, the locking member 31 releases the limitation on the movement of the transmission assembly 20 and the transmission assembly 20 is switched from the locking state to the unlocking state. It should be noted that, in the present application, the transmission assembly 20 can move along the axial direction thereof, and at the same time, can drive the valve rod to rotate through the rotation of the transmission assembly, so as to realize the switching of the valve state. Thus, when the latch member 31 is in the limit position, the transmission assembly 20 can be locked, and the transmission assembly 20 can neither move axially nor rotate, so that the valve can be locked and maintained in the current state by this. In one embodiment of the present application, after the locking member 31 is switched from the limiting position to the abdicating position, the end of the transmission assembly 20 away from the valve rod can extend out of the lock case 10, and the operator can determine that the locking member 30 is in the unlocked state and can switch the state of the valve.

Moreover, it should be noted that, in the present application, the operator can operate the transmission assembly 20 to rotate and complete the switching of the valve status only after the transmission assembly 20 is extended out of the lock housing 10. That is, when the locking assembly 30 is in the locking state, by keeping the transmission assembly 20 inside the accommodating cavity, not only the transmission assembly 20 can be prevented from rotating the valve rod, but also the operator can be prevented from operating the transmission assembly 20.

In one embodiment of the present application, the direction of movement of the latch member 31 is perpendicular to the axial direction of the transmission assembly 20. By this arrangement, it is effectively ensured that the locking member 31 can be more easily engaged with the transmission assembly 20.

Specifically, the transmission assembly 20 is provided with a first latching hole 21 and a second latching hole 22 which are arranged at intervals along the rotation direction of the transmission assembly 20, and when the latching member 31 is at the limit position, the latching end of the latching member 31 extends into the first latching hole 21 so as to lock the transmission assembly 20 and keep the valve in an open state; or the latching end of the latch member 31 extends into the second latching aperture 22 to latch the drive assembly 20 and maintain the valve in a closed condition. Through setting up like this, can make valve blocking device can lock the valve in open mode or closed condition to can prevent that operating personnel from carrying out the maloperation to the valve.

As shown in fig. 3, the first latching hole 21 and the second latching hole 22 have the same distance to both ends of the driving assembly 20. Since the transmission assembly 20 only rotates during the switching of the state of the valve, no movement is generated in the axial direction. Thus, with this arrangement, it is possible to effectively ensure that the latch member 31 can enter or exit the first latch hole 21 and the second latch hole 22 only by the rotation of the transmission assembly 20.

That is, when the driving assembly 20 in the present application is vertically placed, the first latching hole 21 and the second latching hole 22 have the same height.

In one embodiment of the present application, as shown in fig. 2 to 11, the transmission assembly 20 includes a first transmission shaft 23 and a second transmission shaft 24 coaxially disposed, the transmission assembly 20 further includes a reset member 25 disposed between the first transmission shaft 23 and the second transmission shaft 24, the first transmission shaft 23 can rotate the second transmission shaft 24, wherein the first transmission shaft 23 has a first locking hole 21 and a second locking hole 22, when the transmission assembly 20 is in an unlocked state, one end of the first transmission shaft 23 extends out of the lock case 10, and the reset member 25 is used for providing a reset force to the first transmission shaft 23 to extend out of the lock case 10; the end of the second drive shaft 24 remote from the first drive shaft 23 is connected to the valve stem. One end of the first transmission shaft 23 close to the second transmission shaft 24 is inserted into the second rotation shaft. By this arrangement it is ensured that the second drive shaft 24 remains connected to the valve stem when the first drive shaft 23 extends out of the lock housing 10. Also, when the first transmission shaft 23 moves in its axial direction, no influence is exerted on the valve stem. It should also be noted that, in the present application, when the first transmission shaft 23 extends out of the lock case 10, the first transmission shaft 23 and the second transmission shaft 24 are still connected, that is, the length of the first transmission shaft 23 inserted into the second transmission shaft 24 is greater than the distance of the first transmission shaft 23 moving along the circumferential direction thereof.

As shown in fig. 2, one end of the first transmission shaft 23 close to the second transmission shaft 24 has a special-shaped protrusion 231, one end of the second transmission shaft 24 close to the first transmission shaft 23 has a special-shaped groove 241 fitted with the special-shaped protrusion 231, the special-shaped protrusion 231 extends out of the inside of the special-shaped groove 241 and abuts against the inner side wall of the special-shaped groove 241, and the special-shaped protrusion 231 is slidably fitted with the special-shaped groove 241 in the axial direction of the first transmission shaft 23.

It should be noted that the purpose of the irregular protrusions and grooves 241 in this application is to ensure that when the first transmission shaft 23 rotates, the first transmission shaft 23 can drive the second transmission shaft 24 to rotate together, instead of the first transmission shaft 23 idling relative to the second transmission shaft 24. Therefore, in the present application, the irregular-shaped protrusion 231 may be irregular or polygonal, and it is sufficient to at least ensure that the first transmission shaft 23 can drive the second transmission shaft 24 to rotate. Meanwhile, the shape of the shaped groove 241 is matched with the shape of the shaped protrusion 231, or the shape of the profile of the cross section of the shaped groove 241 is the same as the shape of the profile of the cross section of the shaped protrusion 231. It should be noted that, when the first transmission shaft 23 extends out of the lock case 10, the first transmission shaft 23 moves along the circumferential direction thereof, so that the shape of the special-shaped protrusion 231 and the special-shaped groove 241 is also required to ensure that the special-shaped protrusion 231 can move along the circumferential direction of the first transmission shaft 23 in the special-shaped groove 241.

In another embodiment of the present application, one end of the first transmission shaft 23 close to the second transmission shaft 24 has a special-shaped groove, one end of the second transmission shaft 24 close to the first transmission shaft 23 has a special-shaped protrusion matched with the special-shaped groove, the special-shaped groove is sleeved on the special-shaped protrusion, the inner side wall of the special-shaped groove is abutted to the special-shaped protrusion, and the special-shaped groove and the special-shaped protrusion are in sliding fit in the axial direction of the first transmission shaft 23. It should be noted that when so configured, the first drive shaft 23 may be disposed externally of the second drive shaft 24, rather than extending internally of the second drive shaft 24.

In another embodiment of the present application, the first transmission shaft 23 and the second transmission shaft 24 may be integrally designed.

As shown in fig. 2, the transmission assembly 20 further includes a bushing 26, the bushing 26 is disposed at an end of the first transmission shaft 23 away from the second transmission shaft 24, the end of the first transmission shaft 23 away from the second transmission shaft 24 has a connection protrusion 232, the bushing 26 has a relief hole 261 for relieving the connection protrusion 232, and the connection protrusion 232 can pass through the bushing 26 through the relief hole 261 and extend out of the lock case 10. Through setting up connecting protrusion 232, can guarantee that operating personnel can drive first transmission shaft 23 through the handle with connecting protrusion 232 complex and rotate. Therefore, the shape of the coupling protrusion 232 may be different from the shape of the other portions of the first transmission shaft 23, which causes a gap between the coupling protrusion 232 and the lock case 10 when the first transmission shaft 23 is retracted into the receiving cavity, so that the gap between the coupling protrusion 232 and the lock case 10 can be filled by the bushing 26, thereby effectively preventing dust from entering the inside of the lock case 10 and further ensuring the sealing performance of the valve locking device.

Preferably, the transmission assembly 20 further includes a retainer ring 27, the retainer ring 27 is sleeved on an outer side wall of the shaft sleeve 26, the lock case 10 is provided with a shaft sleeve mounting hole 11, the shaft sleeve 26 is disposed at the shaft sleeve mounting hole 11, the outer side wall of the shaft sleeve 26 has a first mounting groove matched with the retainer ring 27, and the inner side wall of the shaft sleeve mounting hole 11 has a second mounting groove matched with the retainer ring 27. By this arrangement, the boss 26 can be effectively fixed.

As shown in fig. 2, the transmission assembly 20 further includes an adapter block 28, one end of the adapter block 28 is connected to the valve stem, the other end of the adapter block 28 is connected to one end of the second transmission shaft 24 away from the first transmission shaft 23, and the adapter block 28 has at least one set of relatively parallel side walls. By providing the adapter block 28, it is effectively ensured that the valve locking device in the present application can adapt to valve stems of different sizes, and the second transmission shaft 24 is connected with the valve stems through the adapter block 28.

Of course, a plurality of differently sized adapter blocks 28 may be provided to further improve the adaptability of the valve closure device.

In one embodiment of the present application, the adapter block 28 has a connecting through hole in a racetrack shape, and one end of the second transmission shaft 24 away from the first transmission shaft 23 is correspondingly provided with a racetrack-shaped connecting groove.

In this application, the valve locking device further includes a circuit module 40, the circuit module 40 includes a battery 41 and a circuit board 42 electrically connected to each other, and a first tongue tube 43 and a second tongue tube 44 electrically connected to the circuit board 42, respectively, and the transmission assembly 20 further includes two magnetic steels 29, when the valve is in a closed state, the first tongue tube 43 and the second tongue tube 44 are respectively sensed with different magnetic steels 29, and when the valve is in an open state, the two magnetic steels 29 are only sensed with the first tongue tube 43 or the second tongue tube 44. By providing the battery 41, power can be supplied to other parts of the circuit module 40. The state of the valve can be effectively monitored by arranging the magnetic steel 29, the first reed pipe 43 and the second reed pipe 44, so that the state of the valve can be judged according to the induction results of the magnetic steel 29, the first reed pipe 43 and the second reed pipe 44.

Specifically, the transmission assembly 20 has a transmission gear 291, the outer side wall of the second transmission shaft 24 of the transmission assembly 20 has a gear segment 242 engaged with the transmission gear 291, and the two magnetic steels 29 are arranged on the transmission gear 291 at intervals, when the transmission assembly 20 drives the valve rod to rotate and switches the valve between the open state and the closed state, the transmission gear 291 drives the two magnetic steels 29 to rotate and makes the two magnetic steels 29 respectively sense the first reed pipe 43 or the second reed pipe 44.

In a specific embodiment of the present application, the first reed pipe 43 and the second reed pipe 44 are respectively in a long strip shape, when the valve is in a closed state, one magnetic steel 29 corresponds to the first reed pipe 43, the other magnetic steel 29 corresponds to the second reed pipe 44, the first reed pipe 43 and the second reed pipe 44 are arranged in parallel, and at this time, a connecting line of the two magnetic steels 29 is perpendicular to the first reed pipe 43 and the second reed pipe 44, when the valve is switched to an open state, the transmission gear 291 drives the two magnetic steels 29 to rotate, positions of the two magnetic steels 29 are changed and are simultaneously sensed by the first reed pipe 43, and at this time, a connecting line of the two magnetic steels 29 is parallel to the first reed pipe 43.

As shown in fig. 2, the circuit module 40 may further include a potentiometer 45 in signal connection with the circuit board 42, and the potentiometer 45 is disposed on the transmission gear 291 and rotates with the transmission gear 291. Through the arrangement, when the transmission assembly 20 waits for the valve rod to rotate and switches the state of the valve, the opening degree of the valve can be judged according to the voltage change of the potentiometer 45. Thereby can make the valve blocking device in this application can monitor the aperture of valve.

As shown in fig. 2 and 3, the circuit module 40 further includes a detecting member 46 electrically connected to the circuit board 42, and a sensing member 233 is disposed on the first transmission shaft 23 of the transmission assembly 20, and when the transmission assembly 20 is in a locked state, the sensing member 233 senses the detecting member 46. In addition, in the present application, when the transmission assembly 20 is switched to the unlocking state, the sensing information of the sensing element 233 and the detecting element 46 is changed. By this arrangement, the locking and unlocking states of the valve locking device can be monitored.

In one embodiment of the present application, the sensing element 46 is a hall element and the sensing element 233 is a magnetic steel.

In one particular embodiment of the present application, the latch assembly 30 further includes a plug body 32 and a tongue 33. One end of the rotating tongue 33 is in driving connection with the lock cylinder body 32, so that the lock cylinder body 32 can drive the rotating tongue 33 to rotate, and the other end of the rotating tongue 33 extends into the locking member 31 and drives the locking member 31 to switch between a limiting position and a yielding position.

It should be further noted that, in the present application, the locking assembly 30 further includes a wireless code sheet, and the wireless code sheet is sleeved on the lock cylinder body 32, and when the electronic key is used to unlock the lock cylinder body 32, the identity authentication is performed on the electronic key through the wireless code sheet.

Alternatively, the locking member 31 is of a sheet structure, the locking member 31 has a driving groove 311, one end of the rotating tongue 33 away from the key cylinder body 32 extends into the driving groove 311 and abuts against the inner side wall of the driving groove 311, the locking end of the locking member 31 has a limiting projection 312 extending towards the transmission component 20, and at least one part of the limiting projection 312 can extend into or withdraw from the first locking hole 21 or the second locking hole 22 of the transmission component 20 respectively.

Specifically, the lock case 10 includes an upper case 12 and a lower case 13, the upper case 12 and the lower case 13 cover each other to form a receiving cavity, the upper case 12 has a shaft sleeve mounting hole 11 and a locking component mounting hole 14, one side of the lower case 13 facing the upper case 12 has a limiting groove, and the locking member 31 is movably disposed in the limiting groove. The movement path of the locking piece 31 can be effectively limited by the limiting groove, so that the locking piece can be prevented from rotating together with the rotating tongue 33.

Optionally, the locking device further comprises a mounting bracket 50, and the mounting bracket 50 is sleeved on the valve and connected with the lower housing 13.

In one embodiment of the present application, the mounting bracket 50 has bolt holes, and the mounting bracket 50 is fixed to the valve by the engagement of the bolts with the bolt holes.

Optionally, the circumferential outer side wall of the first transmission shaft 23 is provided with at least one hand feeling limiting hole 234, the hand feeling limiting hole 234 is close to the second transmission shaft 24 relative to the first locking hole 21 or the second locking hole 22, the hand feeling limiting hole 234 has a guiding curved surface, and when the transmission assembly 20 is switched from the locking state to the unlocking state, the limiting protrusion 312 can extend into the hand feeling limiting hole 234.

In an embodiment of the present application, a plurality of hand feeling limiting holes 234 are circumferentially spaced on the first transmission shaft 23, and when the valve is in the open state, the first transmission shaft 23 has one hand feeling limiting hole 234 corresponding to the locking member 31, and when the valve is in the closed state, the first transmission shaft 23 has one hand feeling limiting hole 234 corresponding to the locking member 31, and the two hand feeling limiting holes 234 are not the same hand feeling limiting hole 234.

In addition, the valve locking device further comprises a communication unit, the communication unit is in signal connection with the detection piece 46, when the detection piece 46 senses the sensing piece 233, the detection piece 46 sends a signal to the communication unit, and the communication unit sends the received signal to the control background.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. the problem that the valve locking device in the prior art cannot display the locking state is effectively solved;

2. the opening and closing state and the opening degree of the valve can be monitored;

3. compact structure and stable performance.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (20)

1. A valve lockout device, comprising:

the valve lock comprises a lock shell (10), wherein the lock shell (10) is provided with an accommodating cavity, and the lock shell (10) is connected with a valve;

the transmission assembly (20), at least one part of the transmission assembly (20) is movably arranged in the containing cavity, and one end of the transmission assembly (20) is connected with the valve rod of the valve;

the locking assembly (30) is provided with an unlocking state and a locking state, when the locking assembly (30) is in the locking state, the transmission assembly (20) retracts to the accommodating cavity, is locked by the locking assembly (30), and the valve rod cannot be operated through the transmission assembly (20); when the locking assembly (30) is in the unlocking state, the locking assembly (30) releases the locking of the transmission assembly (20), at least one part of the transmission assembly (20) can move along the axial direction of the transmission assembly (20) and extend out of the accommodating cavity, and the transmission assembly (20) can be operated to drive the valve rod to rotate.

2. Valve blocking device according to claim 1, characterized in that the transmission assembly (20) comprises a first transmission shaft (23) and a second transmission shaft (24) arranged coaxially, the transmission assembly (20) further comprising a reset element (25) arranged between the first transmission shaft (23) and the second transmission shaft (24), the first transmission shaft (23) being capable of rotating the second transmission shaft (24), wherein,

the first transmission shaft (23) is provided with a first locking hole (21) and a second locking hole (22), one end of the first transmission shaft (23) extends out of the lock shell (10) when the transmission assembly (20) is in the unlocking state, and the resetting piece (25) is used for providing resetting force for the first transmission shaft (23) extending out of the lock shell (10);

one end of the second transmission shaft (24) far away from the first transmission shaft (23) is connected with the valve rod.

3. Valve blocking device according to claim 2, characterized in that the end of the first transmission shaft (23) close to the second transmission shaft (24) is inserted inside the second transmission shaft (24).

4. The valve lockout device of claim 2,

one end of the first transmission shaft (23) close to the second transmission shaft (24) is provided with a special-shaped bulge (231), and one end of the second transmission shaft (24) close to the first transmission shaft (23) is provided with a special-shaped groove (241) matched with the special-shaped bulge (231); or

One end of the first transmission shaft (23) close to the second transmission shaft (24) is provided with a special-shaped groove, and one end of the second transmission shaft (24) close to the first transmission shaft (23) is provided with a special-shaped bulge matched with the special-shaped groove.

5. The valve lockout device of claim 4, wherein the transmission assembly (20) further comprises a shaft sleeve (26), the shaft sleeve (26) is disposed at an end of the first transmission shaft (23) away from the second transmission shaft (24), an end of the first transmission shaft (23) away from the second transmission shaft (24) has a connecting protrusion (232), the shaft sleeve (26) has a relief hole (261) for avoiding the connecting protrusion (232), and the connecting protrusion (232) can pass through the shaft sleeve (26) through the relief hole (261) and extend out of the lock case (10).

6. The valve locking device according to claim 5, wherein the transmission assembly (20) further comprises a retaining ring (27), the retaining ring (27) is disposed on an outer side wall of the shaft sleeve (26), the lock housing (10) is provided with a shaft sleeve mounting hole (11), the shaft sleeve (26) is disposed at the shaft sleeve mounting hole (11), an outer side wall of the shaft sleeve (26) is provided with a first mounting groove matched with the retaining ring (27), and an inner side wall of the shaft sleeve mounting hole (11) is provided with a second mounting groove matched with the retaining ring (27).

7. The valve lockout device of claim 2, wherein the drive assembly (20) further comprises a transfer block (28), one end of the transfer block (28) being connected to the valve stem, the other end of the transfer block (28) being connected to an end of the second drive shaft (24) remote from the first drive shaft (23), the transfer block (28) having at least one set of relatively parallel side walls.

8. Valve latching device according to claim 2, characterized in that the latching member (30) has a latching member (31), the latching member (31) being movably arranged and projecting towards the transmission member (20), the latching member (31) having a limiting position and a yield position,

when the locking piece (31) is at the limit position, the locking end of the locking piece (31) is clamped with the transmission component (20) so that the transmission component (20) is kept in the locking state and the movement of the transmission component (20) is limited;

when the locking piece (31) is switched from the limiting position to the avoiding position, the locking piece (31) releases the limitation on the movement of the transmission assembly (20) and the transmission assembly (20) is switched from the locking state to the unlocking state.

9. Valve latching unit according to claim 8, characterized in that the direction of movement of the blocking member (31) is perpendicular to the axial direction of the transmission assembly (20).

10. Valve latching device according to claim 8, characterized in that the transmission component (20) is provided with a first latching opening (21) and a second latching opening (22) which are arranged at a distance in the direction of rotation of the transmission component (20), wherein when the latching element (31) is in the limit position,

the locking end of the locking piece (31) extends into the first locking hole (21) to lock the transmission component (20) and keep the valve in an open state; or

The locking end of the locking member (31) extends into the second locking aperture (22) to lock the transmission assembly (20) and maintain the valve in a closed state.

11. Valve blocking device according to any one of claims 1 to 10, characterized in that it further comprises a circuit module (40), said circuit module (40) comprising a battery (41) and a circuit board (42) which are electrically connected and a first tongue tube (43) and a second tongue tube (44) which are electrically connected to said circuit board (42), respectively, said transmission assembly (20) further comprising two magnetic steels (29), said first tongue tube (43) and said second tongue tube (44) being respectively sensitive to different said magnetic steels (29) when said valve is in a closed state; when the valve is in an open state, the two magnetic steels (29) are only inducted with the first reed pipe (43) or the second reed pipe (44).

12. The valve locking device according to claim 11, wherein the transmission assembly (20) has a transmission gear (291), the outer side wall of the second transmission shaft (24) of the transmission assembly (20) has a gear section (242) engaged with the transmission gear (291), two magnetic steels (29) are arranged on the transmission gear (291) at intervals, and when the transmission assembly (20) drives the valve rod to rotate and the valve is switched between the open state and the closed state, the transmission gear (291) drives the two magnetic steels (29) to rotate and the two magnetic steels (29) are respectively induced to the first reed pipe (43) or the second reed pipe (44).

13. Valve blocking device according to claim 12, characterized in that the circuit module (40) further comprises a potentiometer (45) in signal connection with the circuit board (42), the transmission gear (291) driving the potentiometer (45) to rotate.

14. The valve lockout device of claim 11, wherein the circuit module (40) further comprises a sensing member (46) electrically connected to the circuit board (42), wherein the first transmission shaft (23) of the transmission assembly (20) is provided with a sensing member (233), and wherein the sensing member (233) senses the sensing member (46) when the transmission assembly (20) is in the lockout state.

15. Valve latching unit according to one of claims 8 to 10, characterized in that the latching assembly (30) further comprises:

a lock cylinder body (32);

the lock cylinder comprises a rotating tongue (33), one end of the rotating tongue (33) is in driving connection with the lock cylinder body (32) so that the lock cylinder body (32) can drive the rotating tongue (33) to rotate, and the other end of the rotating tongue (33) extends into the locking piece (31) and drives the locking piece (31) to be switched between the limiting position and the abdicating position.

16. The valve latching device according to claim 15, wherein the latch member (31) is a plate-shaped structure, the latch member (31) has a driving groove (311), an end of the rotating tongue (33) away from the cylinder body (32) extends into the driving groove (311) and abuts against an inner side wall of the driving groove (311), the latching end of the latch member (31) has a limiting protrusion (312) extending towards the transmission component (20), and at least a part of the limiting protrusion (312) can extend into or withdraw from the first latching hole (21) or the second latching hole (22) of the transmission component (20), respectively.

17. Valve blocking device according to claim 16, characterized in that the lock housing (10) comprises an upper housing (12) and a lower housing (13), the upper housing (12) and the lower housing (13) covering each other to form a receiving chamber, and the upper housing (12) having a bushing mounting hole (11) and a blocking assembly mounting hole (14), the lower housing (13) having a limiting groove on the side facing the upper housing (12), the blocking member (31) being movably arranged in the limiting groove.

18. Valve latching unit according to claim 17, characterized in that it further comprises a mounting bracket (50), said mounting bracket (50) being fitted over the valve and being connected to the lower housing (13).

19. The valve locking device according to claim 16, wherein the circumferential outer side wall of the first transmission shaft (23) is provided with at least one hand feeling limiting hole (234), the hand feeling limiting hole (234) is close to the second transmission shaft (24) relative to the first locking hole (21) or the second locking hole (22), and the hand feeling limiting hole (234) is provided with a guiding curved surface, so that the limiting protrusion (312) can extend into the hand feeling limiting hole (234) after the transmission assembly (20) is switched from the locking state to the unlocking state.

20. Valve blocking device according to claim 14, characterized in that it further comprises a communication unit in signal connection with the detection member (46), the detection member (46) sending a signal to the communication unit when the detection member (46) is sensed by the sensing member (233), the communication unit sending the received signal to a control back-end.

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