CN218348015U - Manual and electric switching mechanism of valve actuator - Google Patents

Abstract

The utility model discloses a manual and electric switching mechanism of a valve actuator in the field of valve actuators, which comprises a handle, wherein the end of the handle is connected with a rotating shaft, the rotating shaft is inserted into a shell and is internally provided with a front supporting point and a rear supporting point, the front end and the rear end of the rotating shaft in the shell are respectively inserted into the front supporting point and the rear supporting point, the part of the rotating shaft in the shell is sleeved with a rotating top structure, the rotating top structure is matched with a worm wheel and a transmission block in the shell, the part of the rotating shaft outside the shell is provided with a limiting structure, the rotating shaft is also provided with an anti-falling structure, and the anti-falling structure is arranged close to the front supporting point; the limiting structure can ensure that the rotation angle of the handle is in a reliable range, the phenomenon that the rotating top structure, the transmission block and the worm wheel are in heavy collision due to overlarge angle to cause damage is avoided, and after the handle is repeatedly rotated for many times, the rotating shaft is prevented from loosening through the anti-falling structure to cause failure; the utility model is used for the valve actuator.

Description

Manual and electric switching mechanism of valve actuator

Technical Field

The utility model relates to a manual and electric switching mechanism in the valve actuator field.

Background

The valve actuator is divided into a manual mode and an electric mode, and a handle in the switching mechanism is matched with the transmission block to switch the working modes. When the handle is rotated, the transmission block is lifted up and is in a manual mode, and when the handle is rotated reversely, the transmission block falls down and is in an electric mode. However, in the prior art, the handle is easy to fall off and the rotating angle is not easy to control in the switching process, the rotating angle is too large, the switching mechanism collides with the internal structure of the actuator, and the normal use of the actuator is affected due to the abrasion caused by the long-term operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a manual and electric switching mechanism of valve actuator, the structure is more stable, ensures the normal operation of executor life and work.

In order to realize the above object, the utility model provides a valve actuator's manual and electric switching mechanism, including the handle, handle end-to-end connection has the pivot, and in the pivot inserted the casing through the preceding strong point on the casing, the cover was equipped with the structure of turning a roof on the part that the pivot was in the casing, and the structure of turning a roof cooperatees with worm wheel and the transmission piece in the casing, and the pivot is provided with limit structure on being in the part outside the casing, still is provided with anti-drop structure in the pivot, and anti-drop structure sets up near preceding strong point.

Compared with the prior art, the utility model has the advantages that the handle is rotated, the rotating shaft is rotated simultaneously to drive the rotating jacking structure to rotate and jack up the transmission block, so that the transmission block is combined with the manual mechanism, and the valve can be opened and closed manually; and the handle is rotated reversely, then the rotating top structure breaks away from the transmission block, so that the transmission block falls down to be matched with the worm wheel, and further the valve is electrically opened and closed. The utility model is used for the valve actuator.

As the utility model discloses a further improvement, limit structure includes spacing dish, has seted up spacing breach on the spacing dish, and the supporting spacing screw that is provided with of spacing breach, the supporting spacing bolt that has of spacing screw, and spacing screw sets up on the casing.

So no matter making corotation or reversal, one in the both ends of spacing breach is as long as contradict with spacing bolt, then can't continue to rotate for the angle of the breach of spacing dish is the rotatable angle of handle, lets the handle can only rotate at the angle within range of spacing breach, avoids rotating the overrange and leads to the collision.

As a further improvement, the anti-drop structure comprises an anti-drop screw hole, and the anti-drop screw hole is provided with an anti-drop bolt.

Therefore, in the using process, when the rotating shaft moves outwards due to reasons such as vibration, the anti-falling bolt is abutted against the front supporting point, so that the rotating shaft cannot continue to move outwards, the switching mechanism is ensured not to be loosened integrally, and the switching mechanism can operate normally all the time.

As a further improvement of the utility model, the top rotating structure is established including the cover and is changeing epaxial follower, the end of follower be provided with transmission block complex lug, the bottom of follower is connected with the rotating member, the lower part of rotating member be provided with worm wheel complex bayonet socket.

The rotating shaft rotates to enable the follower to rotate so as to drive the rotating piece to rotate, after the follower rotates upwards, the lug at the tail end of the follower is in contact with the transmission block, the transmission block is jacked up to be combined with the manual mechanism, and meanwhile, the bayonet at the lower part of the rotating piece is clamped with the periphery of the worm wheel, so that the transmission block can be jacked up all the time, and the valve can be manually opened and closed; the follower reversal, the follower breaks away from the transmission piece, and the rotating member breaks away from the worm wheel for the transmission piece falls down and worm wheel cooperation, and then realizes electronic opening and closing valve.

As a further improvement of the utility model, the top of the shell is provided with an open big port; the open type large port is adopted, the condition in the shell can be observed conveniently, and fingers and tools can be conveniently stretched into the shell to assemble related parts on the rotating shaft.

As a further improvement of the utility model, a rear supporting point is arranged in the shell, and the tail end of the rotating shaft is inserted into the rear supporting point; the both ends of pivot all have the strong point in the casing like this for the pivot is two bearing structure, rotates the in-process at the handle, and the both ends homoenergetic of pivot is effectively supported, avoids the pivot to appear warping because of the atress is uneven.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic view of the internal structure of the present invention.

The anti-falling device comprises a handle 1, a limiting disc 2, a shell 3, a limiting notch 4, a limiting screw hole 5, a rear supporting point 6, a rotating shaft 7, an anti-falling screw hole 8, a front supporting point 9, a large port 10, a transmission block 11, a worm wheel 12, a main shaft 13, a protruding block 14, a bayonet 15, a follower 16 and a rotating piece 17.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, a manual and electric switching mechanism of a valve actuator comprises a handle 1, a rotating shaft 7 is connected to the end of the handle 1, the rotating shaft 7 is inserted into a housing 3 through a front supporting point 9 on the housing 3, a rotating top structure is sleeved on a part of the rotating shaft 7 in the housing 3, the rotating top structure is matched with a worm wheel 12 and a transmission block 11 in the housing 3, a limiting structure is arranged on a part of the rotating shaft 7 outside the housing 3, an anti-falling structure is further arranged on the rotating shaft 7, and the anti-falling structure is arranged close to the front supporting point 9.

The limiting structure comprises a limiting disc 2, a limiting notch 4 is formed in the limiting disc 2, a limiting screw hole 5 is formed in the limiting notch 4 in a matched mode, a limiting bolt is formed in the limiting screw hole 5 in a matched mode, and the limiting screw hole 5 is formed in the shell 3; the anti-falling structure comprises an anti-falling screw hole, and an anti-falling bolt is matched with the anti-falling screw hole; the rotating top structure comprises a follower 16 sleeved on the rotating shaft 7, the tail end of the follower 16 is provided with a convex block 14 matched with the transmission block 11, the bottom of the follower 16 is connected with a rotating piece 17, and the lower part of the rotating piece 17 is provided with a bayonet 15 matched with the worm wheel 12; the top of the shell 3 is provided with an open large port 10; the end of the rotating shaft 7 is inserted into a supporting hole formed in the housing 3.

The open type large port 10 is formed in the top of the shell 3 of the valve actuator, the large port 10 is in a circular and square combined form, the square portion is in a half square shape, the distance from the center of the outer side edge of the square portion to the circle center of the circular portion is not smaller than 87mm, the radius of the circular portion is not smaller than 54mm, the length of the large port 10 is not smaller than 141mm, the width of the large port is not smaller than 108mm, the opening is larger, the visual field is wider when the large port 10 is observed in the shell 3, and components in a manual electric mechanism can be assembled more conveniently.

The handle 1 is rotated clockwise, the rotating shaft 7 rotates along with the rotating shaft, the follower 16 rotates upwards to drive the rotating piece 17 to rotate upwards, the lug 14 at the tail end of the follower 16 is contacted with the transmission block 11 and then continues to rotate upwards, the transmission block 11 is pushed to move upwards along the main shaft 13, the transmission block 11 is combined with the manual rotating mechanism, the rotating piece 17 is lifted along with the angle, the bayonet 15 at the lower part of the rotating piece 17 is clamped with the outer peripheral edge of the worm wheel 12, the transmission block 11 is firmly pushed to the height position through the bearing relation between the rotating piece 17 and the worm wheel 12, manual opening and closing of the valve are achieved, due to manual rotation, the speed is slow, the transmission block 11 is always in a contact state with the lug 14 in the rotating process, the lug 14 cannot influence rotation of the transmission block 11, and friction between the transmission blocks 11 is small.

When the handle 1 is rotated anticlockwise, the follower 16 drives the rotating piece 17 to rotate downwards, so that the convex block 14 is separated from the transmission block 11, meanwhile, the bayonet 15 on the rotating piece 17 is also separated from the worm wheel 12, the transmission block 11 loses the support of the convex block 14, falls down again, is separated from the manual rotating mechanism, is combined with the worm wheel 12, and thus, the motor rotates, the worm wheel 12 rotates, and then the transmission block 11 is driven to rotate, and the electric opening and closing of the valve are realized.

Be equipped with spacing screw 5 in the turned angle of spacing breach 4, twist spacing bolt in spacing screw 5, at the in-process of twist grip 1 like this, spacing dish 2 also can rotate along with the pivoted rotates, after the one end of spacing breach 4 and spacing bolt contact, then indicate that the rotation targets in place, can't continue twist grip 1, avoid the too big lug 14 that leads to of rotation angle and take place to collide greatly between transmission block 11 and worm wheel 12 and the rotating member 17, cause the damage.

And because the both ends of pivot 7 itself are pegged graft with preceding strong point 9 and the back strong point 6 on the casing, set up anti-drop screw 8 on the position that pivot 7 is close to preceding strong point 9, screw up anti-drop bolt on anti-drop screw 8, when reasons such as vibrations appear in the long-term use like this make pivot 7 outwards remove, anti-drop bolt conflicts with preceding strong point 9, and then pivot 7 can't outwards remove, ensures that pivot 7 can not break away from casing 3.

The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art can make some substitutions and transformations to some technical features without creative labor according to the disclosed technical contents, and these substitutions and transformations are all within the protection scope of the present invention.

Claims (6)

1. The utility model provides a manual and electric switching mechanism of valve actuator, includes the handle, and the handle end-to-end connection has the pivot, and in the pivot inserted the casing through the preceding strong point on the casing, its characterized in that: the cover is equipped with the structure of turning to the top on the part that the pivot is in the casing, and the structure of turning to the top cooperatees with worm wheel and drive block in the casing, is provided with limit structure on the part that the pivot is outside the casing, still is provided with anti-drop structure in the pivot, and anti-drop structure sets up near preceding strong point.

2. A hand-operated or electro-mechanical switching mechanism for a valve actuator as claimed in claim 1, wherein: the limiting structure comprises a limiting disc, a limiting notch is formed in the limiting disc, a limiting screw hole is formed in the limiting notch in a matched mode, a limiting bolt is formed in the limiting screw hole in a matched mode, and the limiting screw hole is formed in the shell.

3. A hand-operated and electrically-operated switching mechanism for a valve actuator as claimed in claim 2, wherein: the anti-drop structure includes the anticreep screw, and the anticreep screw is supporting to be provided with the anticreep bolt.

4. A hand-operated or hand-operated switching mechanism for a valve actuator as claimed in claim 3, wherein: the top rotating structure comprises a follower sleeved on the rotating shaft, a lug matched with the transmission block is arranged at the tail end of the follower, a rotating piece is connected to the bottom of the follower, and a bayonet matched with the worm wheel is arranged at the lower part of the rotating piece.

5. A hand-operated or electro-mechanical switching mechanism for a valve actuator as claimed in claim 4, wherein: the top of the shell is provided with an open large port.

6. A hand-operated or electro-mechanical switching mechanism for a valve actuator as claimed in claim 4, wherein: the shell is also internally provided with a rear supporting point, and the tail end of the rotating shaft is inserted into the rear supporting point.

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