CN112963603B

CN112963603B - Electric valve actuator

Info

Publication number: CN112963603B
Application number: CN202110207555.3A
Authority: CN
Inventors: 范琳
Original assignee: Victory Valve Group Co ltd
Current assignee: Victory Valve Group Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-06-21
Anticipated expiration: 2041-02-25
Also published as: CN112963603A

Abstract

The invention relates to the technical field of valve actuators, and discloses an electric valve actuator which comprises a valve body, wherein the upper end of the left side of the valve body is connected with an output shaft in a penetrating manner, the right end of the output shaft extends into the valve body and is fixedly connected with a limiting seat, the other end of the limiting seat is fixedly connected with a sliding groove, a limiting rod is connected inside the sliding groove in a sliding manner, the right end of the limiting rod is fixedly connected with a limiting block, and the inside of the valve body is rotatably connected with a first rotating box. According to the invention, the chute is driven to rotate along the vertical direction by the rotation of the motor output shaft, so that the opening and closing effects of the valve caused by the reciprocating rotation of the rotating box are realized, the opening and closing duration of the valve is controlled, meanwhile, the effect of rotating the impeller to stir the magnetostrictive sheet to vibrate to generate a magnetic field and further realize the closing of the valve in a power-off state is realized by the matching arrangement of the first electromagnet and the second electromagnet, and the problem that the valve cannot be closed due to accidental power-off in the prior art is solved.

Description

Electric valve actuator

Technical Field

The invention relates to the technical field of valve actuators, in particular to an electric valve actuator.

Background

The valve electric actuator realizes the control of the valve in an electric energy mode, further realizes the opening and closing effects of the valve according to different situations, has the characteristics of convenience, high efficiency, safety and the like compared with the traditional manual valve, is widely applied to large-scale industrial equipment, realizes the current limiting as a precise electrical element, and has the safety protection characteristics of water resistance, explosion resistance and the like.

The prior electric valve actuator has the following technical defects when in use: firstly, most of the existing devices can only singly realize the opening and closing of the valve, and the opening time cannot be automatically adjusted according to different production requirements, so that the operation mode is low in efficiency and needs to be improved urgently; and secondly, when the electric valve is used, the electric valve meets the condition of sudden power failure, the valve cannot be closed, a large amount of gas is leaked, and great potential safety hazards are easily generated when the electric valve is manually closed.

Disclosure of Invention

Aiming at the defects of the existing electric valve actuator in the background technology in the using process, the invention provides the electric valve actuator which has the advantages of automatic intelligent adjustment to meet different production requirements and automatic valve closing after power failure, and solves the technical problems in the background technology.

The invention provides the following technical scheme: the utility model provides an electric valve actuator, includes the valve body, the left side upper end through connection of valve body has the output shaft, the right-hand member of output shaft just extends to the spacing seat of the inside fixedly connected with of valve body, the other end fixedly connected with spout of spacing seat, the inside sliding connection of spout has the gag lever post, the right-hand member fixedly connected with stopper of gag lever post, the inside of valve body is rotated and is connected with first rotation case, the inside of first rotation case is rotated and is connected with the second and rotates the case, the right side wall top fixedly connected with first electro-magnet of case is rotated to the second, the loop bar has been seted up to the lateral wall that the case was rotated to the second, the lower extreme fixedly connected with of case is rotated to the second and is rotated the post, the lower extreme fixedly connected with case of rotation post, the passageway has been seted up on the case surface, the inside of case is equipped with the magnetostrictive drive device.

Preferably, the magnetostrictive driving device comprises an impeller, the impeller is located inside the valve core and fixedly connected to the right end of the channel, a rack is fixedly connected to the outer end of the impeller, a second electromagnet is fixedly connected to the side wall of the right end of the valve core, a spring is fixedly connected to the left side of the second electromagnet, a magnet is fixedly connected to the other end of the spring, a limiting rod is fixedly connected to the other end of the magnet, the left end of the limiting rod extends into two adjacent racks, a connecting rod is fixedly connected to the upper end of the second electromagnet, and a magnetostrictive sheet is fixedly connected to the top end of the connecting rod.

Preferably, the through-hole has been seted up on the surface of first rotation case, the setting of through-hole is the rectangle slide, just the width value of through-hole is greater than the diameter value of stopper.

Preferably, the chutes are symmetrically arranged along two ends of the limiting seat, and the distance value of the connecting rod chutes is larger than the diameter value of the limiting rod.

Preferably, the magnetostrictive sheet extends into the rack, the magnetostrictive sheet is made of elastic materials, and the limiting rod is made of a metal rod.

The invention has the following beneficial effects:

1. according to the invention, the chute is driven to rotate along the vertical direction by the rotation of the motor output shaft, the reciprocating rotation of the rotating box and the opening and closing effects of the valve are realized by the matching arrangement of the limiting rod, the limiting block, the sliding rail and the through hole, meanwhile, the control on the opening and closing duration of the valve is effectively realized by adjusting the rotating speed of the motor output shaft, and the problem of low conveying efficiency caused by the fixed opening and closing time of the valve in the prior art is solved.

2. According to the invention, the rotation of the impeller is realized through the adsorption force of the electromagnet and the matching arrangement of the pawl, and meanwhile, the effect of rotating the impeller to stir the magnetostrictive sheet to vibrate to generate a magnetic field so as to close the valve in a power-off state is realized through the matching arrangement of the first electromagnet, the magnetostrictive sheet, the second electromagnet and the limiting rod, so that the problem that the valve cannot be closed due to accidental power-off in the prior art is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the valve cartridge of the present invention;

FIG. 3 is an enlarged view of a portion of the structure shown in FIG. 2;

FIG. 4 is a schematic top view of a second rotary box according to the present invention;

FIG. 5 is a schematic perspective view of a spacing block according to the present invention;

FIG. 6 is a perspective view of a first rotating box according to the present invention;

FIG. 7 is a schematic structural view of the position relationship of the limiting block in the through hole.

In the figure: 1. a valve body; 2. an output shaft; 3. a first rotating box; 31. a through hole; 4. a second rotating box; 41. a first electromagnet; 42. a loop bar; 5. a limiting seat; 6. a chute; 7. a limiting rod; 8. a limiting block; 9. rotating the column; 10. a valve core; 101. an impeller; 102. a rack; 103. a second electromagnet; 104. a spring; 105. a magnet; 106. a limiting strip; 107. a connecting rod; 108. a magnetostrictive sheet; 11. a channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an electric valve actuator includes a valve body 1, an output shaft 2 is connected to the upper end of the left side of the valve body 1 in a penetrating manner, the right end of the output shaft 2 extends to a limiting seat 5 fixedly connected to the inside of the valve body 1, a sliding groove 6 is fixedly connected to the other end of the limiting seat 5, a limiting rod 7 is slidably connected to the inside of the sliding groove 6, a limiting block 8 is fixedly connected to the right end of the limiting rod 7, a first rotating box 3 is rotatably connected to the inside of the valve body 1, a second rotating box 4 is rotatably connected to the inside of the first rotating box 3, a first electromagnet 41 is fixedly connected to the top end of the right side wall of the second rotating box 4, a loop bar 42 is disposed on the side wall of the second rotating box 4, a rotating column 9 is fixedly connected to the lower end of the rotating column 9, a valve core 10 is fixedly connected to the lower end of the rotating column 9, a passage 11 is disposed on the surface of the valve core 10, and a magnetostrictive driving device is disposed inside the valve core 10. The motor rotates to drive the output shaft 2 to rotate to further drive the limiting seat 5 and the sliding chute 6 to synchronously rotate along the vertical direction, in the rotating process, the left side of the limiting rod 7 is positioned in the sliding chute 6 to slide, the right side of the limiting rod 7 is fixedly connected in the second rotating box 4, when the limiting block 8 slides along the inside of the through hole 31 and is limited by the through hole 31, the limiting block 8 slides along the inside of the through hole 31 in the clockwise direction in a circulating way, the specific sliding characteristic is shown in figure 7, when the limiting block 8 moves towards the right side from the lower left corner in the through hole 31, the second rotating box 4 rotates along the inside of the first rotating box 3 to drive the rotating column 9 to realize the opening of the valve, the opening time is from the initial position to the lower right corner, when the limiting block 8 continuously rotates to move upwards, the closing time is from the lower right corner to the upper right corner, when the limiting block moves to the upper left corner, the downward movement realizes the opening of the valve again, the transverse movement and the downward movement of the limiting block 8 are realized in the whole process to open the valve, the transverse movement and the upward movement are realized to close the valve, the rotating speed of the motor is further controlled to realize the automatic control of the opening and the closing of the valve, and the effect of obviously regulating and controlling the time length of the valve is achieved. The magnetostrictive driving device comprises an impeller 101, the impeller 101 is positioned inside a valve core 10 and is fixedly connected to the right end of a channel 11, the outer end of the impeller 101 is fixedly connected with a rack 102, the right end side wall of the valve core 10 is fixedly connected with a second electromagnet 103, the left side of the second electromagnet 103 is fixedly connected with a spring 104, the other end of the spring 104 is fixedly connected with a magnet 105, the other end of the magnet 105 is fixedly connected with a limit strip 106, the left end of the limit strip 106 extends to the inside of two adjacent racks 102, the upper end of the second electromagnet 103 is fixedly connected with a connecting rod 107, and the top end of the connecting rod 107 is fixedly connected with a magnetostrictive sheet 108. The second electromagnet 103 is in a power-on state, the spring 104 is in an extension state due to the magnetic repulsion force generated by the magnet 105, the limiting strip 106 is pushed to extend into the rack 102 to realize limiting, the impeller 101 is prevented from rotating, when a power failure condition occurs, the second electromagnet 103 is powered off, the original stretched spring 104 is recovered after the magnetic force disappears, the limiting strip 106 moves towards the right side, the impeller 101 rotates due to the gas pushing force, the magnetic force collides with the magnetostrictive sheet 108 arranged in the valve core 10 in the rotating process, the magnetostrictive sheet 108 is continuously shifted, the mechanical energy generated in the vibrating process due to the characteristic of the magnetostrictive material can be converted into electromagnetic energy to act on the first electromagnet 41, the first electromagnet 41 is powered on to generate the magnetic force to adsorb the loop bar 42, the limiting bar 7 is always kept to be inclined upwards along the vertical direction as shown in figure 1, and the valve is closed corresponding to the upward movement of the limiting block 8, so far, the whole process realizes that when the electric valve actuator meets the power failure in an unexpected situation, the mechanical energy is converted into electromagnetic energy which can continuously act on the original valve core to realize the closing of the valve, and the complete hidden danger caused by gas leakage in the unexpected power failure situation in the prior art is effectively improved. Through-hole 31 has been seted up on the surface of first case 3 that rotates, and through-hole 31 sets up to the rectangle slide, and the width value of through-hole 31 is greater than stopper 8's diameter value. Ensure that the stop block 8 can normally slide in the through hole 31. The chutes 6 are symmetrically arranged along two ends of the limiting seat 5, and the distance value of the connecting rod chutes 6 is larger than the diameter value of the limiting rod 7. So that the stopper rod 7 can normally slide along the slide groove 6. The magnetostrictive sheet 108 extends into the rack 102, and the magnetostrictive sheet 108 is made of an elastic material, so that the rotation of the impeller 101 can be promoted to vibrate the magnetostrictive sheet 108, and the limiting rod 7 is a metal rod. The first electromagnet 41 can be ensured to adsorb the limiting rod 7, and the valve is closed in the power-off state.

The use method (working principle) of the invention is as follows:

when the valve starts to work, firstly, the motor is started, the motor rotates to drive the output shaft 2 to rotate to further drive the limiting seat 5 and the chute 6 to synchronously rotate along the vertical direction, in the rotating process, the left side of the limiting rod 7 is positioned in the chute 6 to slide, the right side of the limiting rod 7 is fixedly connected in the second rotating box 4, when the limiting rod 8 slides along the inside of the through hole 31 and is limited by the through hole 31, the clockwise direction sliding in cycles is realized in the limiting rod 8 along the inside of the through hole 31, the specific sliding characteristic is as shown in figure 7, when the limiting rod 8 moves towards the right side from the lower left corner in the through hole 31, the second rotating box 4 rotates along the inside of the first rotating box 3 to drive the rotating column 9 to realize the opening of the valve, the opening duration is from the initial position to the lower right corner, when the valve continues to rotate and moves upwards, the closing duration is from the lower right corner to the upper right corner, when the valve moves to the upper left corner, the downward movement realizes the opening of the valve, the transverse movement and the downward movement of the limiting block 8 are realized in the whole process and are the opening of the valve, the transverse movement and the upward movement are the closing of the valve, the rotating speed of the motor is further controlled to realize the automatic control of the opening and the closing of the valve, and the effect of obviously regulating and controlling the opening and closing time of the valve is realized; in the process of controlling the electric valve, the whole process is powered on, the second electromagnet 103 is in a powered state, the magnetic repulsion generated by the magnet 105 enables the spring 104 to be in an extension state, the limiting strip 106 is pushed to extend into the rack 102 to realize limiting, the impeller 101 is prevented from rotating, when the power failure condition is met, the second electromagnet 103 is powered off, the original length of the spring 104 which is originally stretched when the magnetic force disappears is recovered, the limiting strip 106 moves towards the right side, the impeller 101 rotates under the driving force of gas, and collides with the magnetostrictive sheet 108 arranged in the valve core 10 during the rotating process to continuously stir the magnetostrictive sheet 108, mechanical energy generated during the vibrating process due to the characteristic of the magnetostrictive material can be converted into electromagnetic energy to act on the first electromagnet 41, so that the first electromagnet 41 is powered on to generate magnetic force to adsorb the loop bar 42, the limiting rod 7 is always kept to be inclined upwards along the vertical direction as shown in figure 1, correspond 8 upward movements of stopper and realize the closure of valve, so far the overall process realizes that when electric valve executor meets the unexpected condition outage back, mechanical energy turns into the electromagnetic energy and can continue to act on former valve core and realize the closure of valve, has effectively improved prior art because of the unexpected outage condition because of the complete hidden danger that gas leakage caused.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electric valve actuator, comprising a valve body (1), characterized in that: the upper end of the left side of the valve body (1) is connected with an output shaft (2) in a penetrating manner, the right end of the output shaft (2) extends into the valve body (1) and is fixedly connected with a limiting seat (5), the other end of the limiting seat (5) is fixedly connected with a sliding groove (6), the inner part of the sliding groove (6) is connected with a limiting rod (7) in a sliding manner, the right end of the limiting rod (7) is fixedly connected with a limiting block (8), the inner part of the valve body (1) is rotatably connected with a first rotating box (3), the inner part of the first rotating box (3) is rotatably connected with a second rotating box (4), the top end of the right side wall of the second rotating box (4) is fixedly connected with a first electromagnet (41), the side wall of the second rotating box (4) is provided with a loop bar (42), the lower end of the second rotating box (4) is fixedly connected with a rotating column (9), and the lower end of the rotating column (9) is fixedly connected with a valve core (10), the surface of the valve core (10) is provided with a channel (11), a magnetostrictive driving device is arranged in the valve core (10) and comprises an impeller (101), the impeller (101) is positioned in the valve core (10) and fixedly connected to the right end of the channel (11), the outer end of the impeller (101) is fixedly connected with a rack (102), the side wall of the right end of the valve core (10) is fixedly connected with a second electromagnet (103), the left side of the second electromagnet (103) is fixedly connected with a spring (104), the other end of the spring (104) is fixedly connected with a magnet (105), the other end of the magnet (105) is fixedly connected with a limiting strip (106), the tail end of the left side of the limiting strip (106) extends into the two adjacent racks (102), and the upper end of the second electromagnet (103) is fixedly connected with a connecting rod (107), the top end of the connecting rod (107) is fixedly connected with a magnetostrictive sheet (108);

through-hole (31) have been seted up on the surface of first commentaries on classics case (3), through-hole (31) set up to the rectangle slide, just the width value of through-hole (31) is greater than the diameter value of stopper (8), and stopper (8) slide along through-hole (31) inside.

2. An electrically operated valve actuator as set forth in claim 1 wherein: the sliding groove (6) is symmetrically arranged along two ends of the limiting seat (5), and the distance value of the sliding groove (6) is larger than the diameter value of the limiting rod (7).

3. An electrically operated valve actuator as set forth in claim 1 wherein: the magnetostrictive sheet (108) extends into the rack (102), the magnetostrictive sheet (108) is made of elastic materials, and the limiting rod (7) is made of a metal rod.