CN214534739U

CN214534739U - Manual-automatic switching system of valve actuator

Info

Publication number: CN214534739U
Application number: CN202021980408.7U
Authority: CN
Inventors: 郑阳; 郑纬; 梁水清; 南赛冬; 戴承浩
Original assignee: Wenzhou Heli Automatic Meter Co ltd
Current assignee: Wenzhou Heli Automatic Meter Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-10-29
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a valve actuator's manual switching system, including electric control system and manual control system, a side end that the worm is close to manual input spare is provided with the centrifugal part, and the centrifugal part disposes elastic connection spare and direction supporting mechanism, and direction supporting mechanism fixes on the worm, elastic connection spare pulling centrifugal part is inwards retracted, and the outer expansion supporting that stretches out in the direction supporting mechanism guide centrifugal part is still the centrifugal part, is provided with the baffle on the manual input spare, the baffle with manual input spare axial fixity, the elastic force that elastic connection spare was overcome to the centrifugal part when the worm rotates outwards stretches out and blocks the route that removes to the butt joint direction at the baffle, and the centrifugal part is retracted under elastic connection spare's effect when the worm stall, and the centrifugal part breaks away from stopping to the baffle, and manual input spare adopts butt joint mechanism formation joint with the worm outer end. The switching system can be switched between electric control and manual control in order, and interference and disorder in switching can be effectively avoided.

Description

Manual-automatic switching system of valve actuator

Technical Field

The utility model relates to a valve actuator's manual-automatic switched systems.

Background

The valve actuator comprises a manual control actuator, an electric control actuator and a manual and electric control actuator, wherein the manual and electric control actuator comprises an electric control system and a manual control system, the electric control is a conventional choice in the traditional setting, the manual control is a choice when the electric control fails, but when the electric control stops, a transmission mechanism runs forward and backward under the action of inertia, so that a manual control rod is damaged due to violent interference with the transmission mechanism when the manual control rod is inserted. This often occurs when the user erroneously operates the manual system while the electric control system is operating, and also when the user violently interferes with the manual system, the manual system is damaged. In order to avoid the damage of the actuator caused by misoperation, the structure is required to be improved so that manual and electric switching is more orderly and does not interfere.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a manual-automatic switching system of valve actuator is provided, this switching system can switch between electric control and manual control in an orderly manner, effectively avoids appearing interfering and disorderly between switching.

Therefore, the utility model provides a manual automatic switching system of valve actuator, including electric control system and manual control system, manual control system includes worm and manual input piece, and the outer end of manual input piece and worm disposes the docking mechanism that can joint each other and separate, manual input piece disposes the elasticity canceling release mechanical system that impels it to keep away from the worm, manual input piece adopts the docking mechanism formation with the worm to be connected and conduct drive power, one side end that the worm is close to manual input piece is provided with centrifugal part, and centrifugal part disposes flexible connecting piece and direction supporting mechanism, and direction supporting mechanism fixes on the worm, flexible connecting piece pulling centrifugal part is inwards retracted, direction supporting mechanism guide centrifugal part internal extension and support the centrifugal part, be provided with the baffle on the manual input piece, the baffle with manual input piece axial fixity, when the worm rotates, the elastic force of the centrifugal piece for overcoming the elastic connecting piece outwards stretches out and blocks the path of the baffle for moving towards the butt joint direction, the centrifugal piece blocks the baffle for moving and further blocking the manual input piece and the outer end of the worm are clamped, when the worm stops rotating, the centrifugal piece retracts under the action of the elastic connecting piece, the centrifugal piece is separated from the blocking of the baffle, and the manual input piece and the outer end of the worm adopt a butt joint mechanism to form clamping.

Preferably, the guide supporting mechanism is a centrifugal part support, the centrifugal part support is provided with a lateral hole, the elastic connecting piece is a tension spring, the centrifugal part is at least partially inserted into the lateral hole, one end of the tension spring is connected with the bottom of the lateral hole, and the other end of the tension spring is connected with the inner end of the centrifugal part.

Preferably, the centrifugation support is including fixing the central disc on the worm, 3 at least the side direction hole set up in the side of central disc, the centrifugation is transverse distribution's T font, the downthehole interior connecting rod that transversely wears to be equipped with of side direction, the medial extremity of extension spring is connected on the inner connecting rod, the medial extremity of centrifugation has the end hole, and the end hole department on the centrifugation is transversely worn to locate by the outer connecting rod, the outside end of extension spring is connected on the outer connecting rod.

Preferably, manual input spare includes the hand wheel and fixes the main shaft on the hand wheel, docking mechanism includes the central groove that main shaft medial extremity portion had, and the both sides in central groove have the breach, and the width of central groove bottom is greater than the entrance, worm outer end both sides have with the horizontal quarter butt that the central groove matches, the hand wheel with the worm passes through horizontal quarter butt card is gone into the central groove realizes the joint.

Preferably, the baffle plate comprises a circular bottom plate and an annular plate, the annular plate is fixedly arranged around the circular bottom plate, and the abutting mechanism is positioned on the inner side of the circular bottom plate and is surrounded by the annular plate.

Preferably, the elastic reset mechanism is a reset spring sleeved on the outer side end of the worm and the periphery of the butting mechanism, the inner side end of the reset spring is abutted against the central disc, and the outer side end of the reset spring is abutted against the circular bottom plate.

Preferably, the manual input piece is rotatably arranged on the manual piece shell in a penetrating mode through a bearing, a light touch switch is fixed on the manual piece shell and controls the on-off of a circuit of the electric control system, a contact of the light touch switch is aligned to the baffle, the baffle moves forwards along with the manual input piece and is separated from the contact with the light touch switch when the manual input piece is clamped with the outer end of the worm by adopting a butting mechanism so as to enable the electric control system to be powered off, and the baffle retreats and presses the light touch switch to enable the electric control system to be powered on after the manual input piece is separated from the outer end of the worm.

The technical effects of the utility model: the utility model discloses well worm is the drive mechanism of executor, when the worm rotates the elastic force that elastic connection spare was overcome to the centrifugation piece outwards stretches out and blocks the route that the baffle removed to the butt joint direction, the centrifugation piece blocks the baffle removes and then stops manual input spare with the outer end joint of worm, and the worm stall time centrifugation piece contracts under elastic connection spare's effect and contracts, the centrifugation piece breaks away from right the stopping of baffle, manual input spare adopts butt joint mechanism formation joint with the worm outer end. The mechanism can stop the stopper by the centrifugal piece when the worm serving as the transmission mechanism rotates at a high speed, so that the butt joint of the manual mechanism and the worm is prevented, and finally, the manual system is prevented from being involved in the high-speed rotation of the worm, and the damage caused by misoperation of the manual system is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a manual-automatic switching system of a valve actuator according to the present invention.

Fig. 2 is a partially enlarged schematic view of the centrifuge, the guide supporting mechanism, and the docking mechanism in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1, the present invention provides a manual/automatic switching system of a valve actuator, including an electric control system and a manual control system, the manual control system includes a worm 1 and a manual input member 2, the external ends of the manual input member 2 and the worm 1 are configured with a docking mechanism capable of being engaged with and disengaged from each other, the manual input member 2 is configured with an elastic reset mechanism 3 for urging the manual input member to be away from the worm, the manual input member 2 and the worm 1 are connected by the docking mechanism and conduct driving force, a centrifugal member 4 is disposed at one side end of the worm 1 close to the manual input member 2, the centrifugal member 4 is configured with an elastic connecting member 16 and a guiding support mechanism, the guiding support mechanism is fixed on the worm 1, the elastic connecting member 16 pulls the centrifugal member 4 to retract inwards, the guiding support mechanism guides the centrifugal member 4 to extend and retract inwards and outwards and supports the centrifugal member 4, be provided with baffle 5 on the manual input piece 2, baffle 5 with 2 axial fixings of manual input piece, when worm 1 rotates centrifugal 4 overcomes elastic connection 16's elastic force and outwards stretches out and block the route that baffle 5 removed to the butt joint direction, centrifugal 4 blocks baffle 5 removes and then stops manual input piece 2 with the outer end joint of worm 1, when worm 1 stall the centrifugal 4 contracts under elastic connection 16's effect, centrifugal 4 breaks away from right baffle 5 blocks, manual input piece 2 adopts butt joint mechanism formation joint with worm 1 outer end.

Referring to fig. 1, the guide support mechanism is a centrifugal piece support 6, the centrifugal piece support 6 is provided with a lateral hole 7, the elastic connecting piece 16 is a tension spring, the centrifugal piece 4 is at least partially inserted into the lateral hole 7, one end of the tension spring is connected with the bottom of the lateral hole 7, and the other end of the tension spring is connected with the inner end of the centrifugal piece 4.

Referring to fig. 1, the centrifugal part bracket 6 includes a central disk 8 fixed on a worm 1, at least 3 lateral holes 7 arranged on the side surface of the central disk 8, the centrifugal part 4 is in a transverse distribution T shape, inner connecting rods 9 transversely penetrate through the lateral holes, the inner connecting rods 9 are connected to the inner side ends of the tension springs, end holes 10 are arranged at the inner side ends of the centrifugal part 4, outer connecting rods 11 transversely penetrate through the end holes 10 on the centrifugal part 4, and the outer side ends of the tension springs are connected to the outer connecting rods 11.

Referring to fig. 1, the manual input device 2 includes a hand wheel 12 and a main shaft 13 fixed on the hand wheel 12, the docking mechanism includes a central groove 14 provided at the end of the inner side of the main shaft 13, notches 15 are provided at both sides of the central groove 14, the width of the bottom of the central groove 14 is larger than that of the inlet, lateral short rods 18 matched with the central groove 14 are provided at both sides of the outer end of the worm 1, and the hand wheel 12 and the worm 1 are clamped into the central groove 14 through the lateral short rods 18.

Referring to fig. 1, the baffle 5 includes a circular bottom plate 51 and an annular plate 52, the annular plate 52 is fixedly disposed around the circular bottom plate 51, and the docking mechanism is disposed inside the circular bottom plate 51 and surrounded by the annular plate 52. The elastic reset mechanism 3 is a reset spring sleeved on the outer side end of the worm and the periphery of the butt joint mechanism, the inner side end of the reset spring is propped against the central disc 8, and the outer side end of the reset spring is propped against the circular bottom plate 51.

Referring to fig. 1, the manual input member 2 is rotatably disposed on the manual member housing 20 through a bearing, a tact switch 21 is fixed on the manual member housing 20, the tact switch 21 controls the on/off of the circuit of the electric control system, a contact of the tact switch 21 is aligned with the baffle 5, the baffle 5 moves forward along with the manual input member 2, the baffle 5 on the manual input member 2 is out of contact with the tact switch 21 to cause the electric control system to be powered off while the manual input member 2 is in clamping connection with the outer end of the worm 1 through a butting mechanism, and the baffle 5 retreats and is also out of contact with the press tact switch to cause the electric control system to be powered on while the manual input member 2 is out of contact with the transverse short rod 18 at the outer end of the worm 1.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A manual-automatic switching system of a valve actuator, which comprises an electric control system and a manual control system, wherein the manual control system comprises a worm and a manual input part, the manual input part and the outer end of the worm are provided with butt joint mechanisms which can be mutually clamped and separated, the manual input part is provided with an elastic reset mechanism which can urge the manual input part to be far away from the worm, the manual input part and the worm adopt the butt joint mechanisms to form connection and conduct driving force, and the manual-automatic switching system is characterized in that: a centrifugal piece is arranged at one side end of the worm close to the manual input piece, the centrifugal piece is provided with an elastic connecting piece and a guide supporting mechanism, the guide supporting mechanism is fixed on the worm, the elastic connecting piece pulls the centrifugal piece to retract inwards, the guide supporting mechanism guides the centrifugal piece to extend outwards and support the centrifugal piece, the manual input piece is provided with a baffle which is axially fixed with the manual input piece, the centrifugal piece overcomes the elastic force of the elastic connecting piece to extend outwards and block the path of the baffle moving towards the butt joint direction when the worm rotates, the centrifugal piece blocks the baffle plate from moving so as to prevent the manual input piece from being clamped with the outer end of the worm, when the worm stops rotating, the centrifugal piece retracts under the action of the elastic connecting piece, the centrifugal piece is separated from the baffle, and the manual input piece and the outer end of the worm form a clamping connection by adopting a butt joint mechanism.

2. The manual-automatic switching system of a valve actuator of claim 1, wherein: the guide supporting mechanism is a centrifugal part support, the centrifugal part support is provided with a lateral hole, the elastic connecting piece is a tension spring, the centrifugal part is at least partially inserted into the lateral hole, one end of the tension spring is connected with the bottom of the lateral hole, and the other end of the tension spring is connected with the inner end of the centrifugal part.

3. The manual valve actuator switching system of claim 2, wherein: the centrifugal part support is including fixing the central disc on the worm, at least 3 the side direction hole set up in the side of central disc, the centrifugal part is transverse distribution's T font, the downthehole interconnection connecting rod that transversely wears to be equipped with of side direction, the medial extremity of extension spring is connected on the inner connecting rod, the medial extremity of centrifugal part has the end hole, and the end hole department on the centrifugal part is transversely worn to locate by the outer connecting rod, the outside end of extension spring is connected on the outer connecting rod.

4. A valve actuator manual switching system according to claim 1, 2 or 3 wherein: manual input spare includes the hand wheel and fixes the main shaft on the hand wheel, docking mechanism includes the central groove that main shaft medial extremity portion had, and the both sides in central groove have the breach, and the width of central groove bottom is greater than the entrance, worm outer end both sides have with the horizontal quarter butt that the central groove matches, the hand wheel with the worm passes through horizontal quarter butt card is gone into the joint is realized to the central groove.

5. The valve actuator manual-automatic switching system of claim 4, wherein: the baffle plate comprises a circular bottom plate and an annular plate, the annular plate is fixedly arranged around the circular bottom plate, and the butting mechanism is positioned on the inner side of the circular bottom plate and is surrounded by the annular plate.

6. The valve actuator manual-automatic switching system of claim 5, wherein: the elastic reset mechanism is a reset spring sleeved at the outer side end of the worm and the periphery of the butt joint mechanism, the inner side end of the reset spring is abutted against the central disc, and the outer side end of the reset spring is abutted against the circular bottom plate.

7. A valve actuator manual switching system according to claim 1, 2 or 3 wherein: the manual input piece is rotatably arranged on the manual piece shell in a penetrating mode through a bearing, a light touch switch is fixed on the manual piece shell and controls the on-off of a circuit of the electric control system, a contact of the light touch switch is aligned to the baffle, the baffle moves forwards along with the manual input piece and is separated from the contact with the light touch switch when the manual input piece is clamped with the outer end of the worm by adopting a butt joint mechanism so as to enable the electric control system to be powered off, and the baffle retreats and presses the light touch switch to enable the electric control system to be powered on after the manual input piece is separated from the outer end of the worm.

8. The valve actuator manual-automatic switching system of claim 4, wherein: the manual input piece is rotatably arranged on the manual piece shell in a penetrating mode through a bearing, a light touch switch is fixed on the manual piece shell and controls the on-off of a circuit of the electric control system, a contact of the light touch switch is aligned to the baffle, the baffle moves forwards along with the manual input piece and is separated from the contact with the light touch switch when the manual input piece is clamped with the outer end of the worm by adopting a butt joint mechanism so as to enable the electric control system to be powered off, and the baffle retreats and presses the light touch switch to enable the electric control system to be powered on after the manual input piece is separated from the outer end of the worm.

9. The valve actuator manual-automatic switching system of claim 5, wherein: the manual input piece is rotatably arranged on the manual piece shell in a penetrating mode through a bearing, a light touch switch is fixed on the manual piece shell and controls the on-off of a circuit of the electric control system, a contact of the light touch switch is aligned to the baffle, the baffle moves forwards along with the manual input piece and is separated from the contact with the light touch switch when the manual input piece is clamped with the outer end of the worm by adopting a butt joint mechanism so as to enable the electric control system to be powered off, and the baffle retreats and presses the light touch switch to enable the electric control system to be powered on after the manual input piece is separated from the outer end of the worm.

10. The valve actuator manual-automatic switching system of claim 6, wherein: the manual input piece is rotatably arranged on the manual piece shell in a penetrating mode through a bearing, a light touch switch is fixed on the manual piece shell and controls the on-off of a circuit of the electric control system, a contact of the light touch switch is aligned to the baffle, the baffle moves forwards along with the manual input piece and is separated from the contact with the light touch switch when the manual input piece is clamped with the outer end of the worm by adopting a butt joint mechanism so as to enable the electric control system to be powered off, and the baffle retreats and presses the light touch switch to enable the electric control system to be powered on after the manual input piece is separated from the outer end of the worm.