Intelligent electric actuator

Abstract

The invention is suitable for the technical field of valve actuators, and provides an intelligent electric actuator which comprises a valve body and a valve rod rotationally arranged in the valve body. A driving shaft is rotatably arranged on the inner peripheral side surface of the execution shell; a rotating part coaxial with the driving shaft is rotationally arranged on the inner circumferential side surface of the execution shell in a penetrating manner; a sliding part matched with the rotating part is arranged between the two sliding rods in a sliding manner; a first spiral groove and a second spiral groove which communicate with each other are sequentially formed in the peripheral side face of the transverse shaft; a plurality of connecting parts uniformly penetrate through the peripheral side surface of the sleeve in a sliding manner; a ball head in sliding fit with the first spiral groove and the second spiral groove is fixed to the bottom end of the extension rod. A guide part matched with the connecting part is arranged between the two guide rods in a sliding manner; according to the device, after accidental power failure, automatic connection of the transverse shaft and the driving shaft is completed through linkage cooperation of all the components, automatic rotating closing of the valve plate after power failure is achieved through linkage cooperation of all the components, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of valve actuators, and more specifically, to an intelligent electric actuator. Background Art

[0002] The valve electric actuator controls the valve through electrical energy, and then opens and closes the valve as required in different situations. Compared with traditional manual valves, it is more convenient, efficient and safer. It is widely used in large-scale industrial equipment. As a precision electrical component, it can achieve current limiting and has safety protection features such as waterproof and explosion-proof.

[0003] When the existing electric valve actuator encounters a sudden power outage during use, the valve cannot be closed and needs to be closed manually, which poses a great safety hazard. The existing electric valve actuator can automatically close the valve plate. For example, the patent documents with announcement numbers CN112963603B and CN218543343U specifically record the relevant structure of the electric valve automatically resetting after a power outage. However, in the actual production process, the electric valve actuator controls the valve plate to maintain a certain opening for production, and automatically closes the valve after a power outage. After power is restored, it cannot automatically reset to the opening state of the valve plate before the power outage. It is necessary to manually start the electric valve actuator to control the valve to rotate to the original opening, which reduces work efficiency and affects production. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an intelligent electric actuator. When the power is accidentally cut off, the horizontal axis and the drive shaft are automatically connected through the linkage cooperation between the various components. The valve plate is automatically rotated and closed after the power is cut off through the linkage cooperation between the various components, thereby reducing safety hazards. When the power is restored, the valve plate is automatically rotated to the opening state before the power is cut off through the linkage cooperation between the various components, and the fixed limit of the connecting part on the rotating part on the drive shaft is released, and the various components are reset. No manual operation is required, thereby improving work efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An intelligent electric actuator comprises a valve body and a valve stem rotatably arranged inside the valve body; a valve plate is fixed to the bottom end of the valve stem; a shaft sleeve rotatably matched with the valve stem is penetrated and arranged on the outer peripheral side of the valve body; an actuator shell connected with it is fixed on the top of the shaft sleeve; a drive shaft is penetrated and rotatably arranged on the inner peripheral side of the actuator shell; a rotating part coaxial with the drive shaft is penetrated and rotatably arranged on the inner peripheral side of the actuator shell; an electromagnetic coil is fixed to the inner peripheral side of the actuator shell, and sliding rods are symmetrically fixed on both sides of the electromagnetic coil on its inner peripheral side; a sliding part compatible with the rotating part is slidably arranged between the two sliding rods; the rotating part comprises a transverse axis rotatably arranged on the inner peripheral side of the actuator shell; a first spiral groove and a second spiral groove that are interconnected are sequentially opened on the outer peripheral side of the transverse axis ; A sleeve sleeved with the driving shaft is fixed at the end of the horizontal axis; a plurality of connecting parts are evenly penetrated and slidably arranged on the outer peripheral side of the sleeve; the sliding part includes a slide plate that slidably cooperates with the slide rod; an armature column is fixed to the side of the slide plate; an extension rod is fixed to the bottom surface of the slide plate; a ball head that slidably cooperates with the first spiral groove and the second spiral groove is fixed to the bottom end of the extension rod; a third connecting spring sleeved on the slide rod is fixedly connected between the slide plate and the inner wall of the execution shell; guide rods are symmetrically fixed to the inner peripheral side of the execution shell; a baffle is fixed between the two guide rods; a first electromagnetic suction cup is fixedly installed on the side of the baffle; a guide part adapted to the connecting part is slidably arranged between the two guide rods; a plurality of slots that plug and cooperate with the connecting part are evenly opened on the peripheral side of the drive shaft near its end.

[0007] The present invention is further configured as follows: a driven gear is fixed to the top of the valve stem; a vertical shaft is rotatably provided on the inner bottom surface of the actuator shell; a driving gear meshing with the driven gear is fixed to the circumferential side surface of the vertical shaft; a worm wheel is fixed to the top of the vertical shaft; a worm meshing with the worm wheel is fixed to the circumferential side surface of the drive shaft; a driving motor is fixed to the outer circumferential side surface of the actuator shell; the output end of the driving motor is fixedly connected to one end of the driving shaft through a reducer; an axial groove is provided on the inner circumferential side surface of the actuator shell to rotate with the horizontal axis; an annular groove is provided on the inner wall of the axial groove; an annular rail is fixed to the circumferential side surface of the horizontal axis near its end to rotate with the annular groove; a sealing cover is screwed to the top of the actuator shell.

[0008] The present invention is further configured as follows: a junction box is installed through the outer peripheral side of the execution shell; the electromagnetic coil and the first electromagnetic suction cup are electrically connected to the access power supply inside the junction box respectively; a controller is arranged inside the junction box; the output end of the controller is electrically connected to the drive motor; a support rod is fixed to the inner peripheral side of the execution shell; an angle plate is fixed to the end of the support rod; a first pressure sensor and a second pressure sensor electrically connected to the input end of the controller are fixedly installed on both sides of the angle plate; a stop rod is fixed to the top of the driven gear.

[0009] The present invention is further configured as follows: a plurality of positioning holes are evenly provided on the outer peripheral side of the sleeve; a plurality of U-shaped seats are evenly fixed on the outer peripheral side of the sleeve; a lifting hole is provided on the top of the U-shaped seat; the connecting portion comprises a lifting sleeve that is slidably matched with the lifting hole; an insertion rod that is plugged and matched with the positioning hole is slidably provided inside the lifting sleeve; the insertion rod is plugged and matched with the corresponding slot; a reset spring is fixed between the insertion rod and the top of the lifting sleeve; a guide ball is fixed on the top of the lifting sleeve; and a support spring is fixedly connected between the guide ball and the U-shaped seat.

[0010] The present invention is further configured as follows: the guide portion includes a mounting plate; guide holes that slide with the guide rod are symmetrically opened on the side of the mounting plate; an iron block is fixed to the side of the mounting plate; a stopper is fixed to the end of the guide rod; a tension spring that is sleeved on the guide rod is fixedly connected between the mounting plate and the stopper; a guide ring that matches the guide ball is fixed to the bottom surface of the mounting plate; a conical guide cover that matches the guide ball is fixed to the end of the guide ring.

[0011] The present invention is further configured as follows: a third pressure sensor electrically connected to the input end of the controller is installed at the end of the first electromagnetic suction cup; connecting balls are symmetrically fixed on two opposite sides of the mounting plate; an electric control part adapted to the connecting ball is fixedly installed on the top of the baffle; the electric control part includes a connecting plate fixedly installed on the top of the baffle; a U-shaped plate is fixed on the top of the connecting plate; ear plates are symmetrically fixed on both sides of the inner wall of the U-shaped plate; first oblique guide grooves adapted to the connecting ball are symmetrically provided on two opposite sides of the ear plate; a sliding cavity is provided on one side of the ear plate; an extension plate is slidably provided inside the sliding cavity; a second oblique guide groove is provided on the side of the extension plate; a first connecting spring is fixedly connected between the extension plate and the inner wall of the sliding cavity; a second electromagnetic suction cup electrically connected to the output end of the controller is fixedly installed on the inner wall of the sliding cavity; an iron plate is fixed on the side of the extension plate.

[0012] The present invention is further configured as follows: a linkage part is fixedly installed on the inner circumferential side of the actuator shell; the linkage part includes an arc-shaped plate fixedly installed on the inner circumferential side of the actuator shell; a support plate is fixed on the bottom surface of the arc-shaped plate; a limit rod is symmetrically fixed on the surface of the support plate; a screw is rotatably arranged on the surface of the support plate; an adjustment plate is slidably arranged between the two limit rods and cooperates with the screw thread to rotate; an L-shaped plate is fixed on the side of the adjustment plate; a support plate is fixed on the L-shaped plate; a lifting rod is slidably arranged on the top of the support plate; an upper friction wheel is fixed on the bottom end of the lifting rod; and a lower friction wheel is fixed on the end of the worm gear.

[0013] The present invention is further configured as follows: a guide rod is symmetrically fixed between the L-shaped plate and the support plate; a T-shaped plate is slidably arranged between the two guide rods and slides through the lifting rod; a second connecting spring sleeved on the guide rod is symmetrically fixed between the T-shaped plate and the support plate; a third electromagnetic suction cup electrically connected to the power supply connected to the inside of the junction box is fixed to the bottom surface of the support plate; an iron column is fixed to the surface of the T-shaped plate; a linkage gear is fixed to the top of the lifting rod; a side plate is fixed to the side of the L-shaped plate; slide rails are symmetrically fixed to the two opposite sides of the side plate; a third electromagnetic suction cup electrically connected to the power supply connected to the inside of the junction box is fixed to the bottom surface of the support plate; an iron column is fixed to the surface of the T-shaped plate; a linkage gear is fixed to the top of the lifting rod; a side plate is fixed to the side of the L-shaped plate; slide rails are symmetrically fixed to the two opposite sides of the side plate; a third electromagnetic suction cup electrically connected to the lifting rod is fixed to the top of the support ... a third electromagnetic suction cup electrically connected to the power supply connected to the inside of the junction box is fixed to the bottom surface of the support plate; a third electromagnetic suction cup electrically connected to the power supply connected to the inside of the junction box is fixed to the bottom surface of the support plate; a third electromagnetic suction cup electrically connected to the power supply connected to the inside of the junction box is fixed to the bottom surface of A toothed plate that slides with the side plate; a slide groove that slides with the side plate is provided on the side of the toothed plate; limiting grooves that slide with the slide rail are symmetrically provided on both sides of the inner wall of the slide groove; a baffle is fixed on the end of the toothed plate; a mounting spring is fixed between the baffle and the side plate; a shading plate is fixed on the top of the toothed plate; an infrared travel switch that is electrically connected to the input end of the controller is fixed on the top of the L-shaped plate; an electromagnetic suction plate that is electrically connected to the output end of the controller is fixed on the inner side of the execution shell; a push rod is fixed on the top of the slide plate; an iron plate is fixed on the top of the push rod.

[0014] The advantages of the present invention are:

[0015] When power is cut off, the electromagnetic coil and the first electromagnetic suction cup lose power at the same time, and the ball head on the sliding part is driven to slide from the first spiral groove into the second spiral groove under the elastic restoring force of the third connecting spring. In this process, the rotating part and each group of connecting parts are driven to rotate synchronously, and the guide part is driven to slide under the tension of the tension spring, thereby squeezing each group of connecting parts. When the insertion rod on the connecting part slides to a position coaxial with the slot, the insertion rod is inserted into the slot under the action of the spring, completing the automatic connection between the horizontal axis and the driving shaft, and the automatic rotation and closing of the valve plate after power failure is realized through the linkage cooperation between the various components, thereby reducing safety hazards.

[0016] When power is restored, the present invention drives the valve plate to automatically rotate to the opening state before power failure through the linkage cooperation between the various components, releases the fixed limit of the connecting part on the rotating part on the driving shaft, and resets the various components without manual operation, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the structure of an intelligent electric actuator of the present invention.

[0018] Figure 2 It is a partial cross-sectional view of an intelligent electric actuator of the present invention.

[0019] Figure 3 For the present invention Figure 2 A magnified image of area A.

[0020] Figure 4 For the present invention Figure 2Schematic diagram of the structure from a frontal perspective.

[0021] Figure 5 For the present invention Figure 4 A magnified view of area B.

[0022] Figure 6 For the present invention Figure 2 A schematic diagram of the structure from another angle.

[0023] Figure 7 For the present invention Figure 6 Magnified view of area C.

[0024] Figure 8 It is a structural schematic diagram of the valve body and the actuator shell assembly of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the valve body, actuator shell and valve plate assembly of the present invention.

[0026] Fig.10 It is a schematic structural diagram of the rotating part of the present invention.

[0027] Fig.11 It is a schematic structural diagram of the sliding part of the present invention.

[0028] Fig.12 It is a structural schematic diagram of the guide part of the present invention.

[0029] Fig.13 It is a structural schematic diagram of the rotating part, connecting part and guiding part assembly of the present invention.

[0030] Fig.14 For the present invention Fig.13 Schematic diagram of the structure in another working state.

[0031] Fig.15 It is a schematic diagram of the structure of the electric control unit of the present invention.

[0032] Fig.16 It is a structural schematic diagram of the electric control unit and the extension plate assembly of the present invention.

[0033] Fig.17 It is a structural schematic diagram of the linkage part of the present invention.

[0034] Fig.18 It is a structural schematic diagram of the linkage part of the present invention from another angle.

[0035] In the figure: 1, valve body; 2, valve stem; 3, valve plate; 4, shaft sleeve; 5, actuator shell; 6, drive shaft; 7, rotating part; 8, electromagnetic coil; 9, slide rod; 10, sliding part; 11, horizontal axis; 12, first spiral groove; 13, second spiral groove; 14, sleeve; 15, slide plate; 16, armature column; 17, extension rod; 18, ball head; 19, guide rod; 20, baffle; 21, first electromagnetic suction cup; 22, guide part; 23, slot; 24, driven gear; 2 5. Vertical axis; 26. Driving gear; 27. Worm gear; 28. Worm; 29. ​​Driving motor; 30. Shaft groove; 31. Annular groove; 32. Annular rail; 33. Sealing cover; 34. Junction box; 35. Support rod; 36. First pressure sensor; 37. Second pressure sensor; 38. Stop rod; 39. Positioning hole; 40. U-shaped seat; 41. Lifting hole; 42. Lifting sleeve; 43. Insert rod; 44. Guide ball; 45. Support spring; 46. Mounting plate; 47. Guide hole; 48, iron block; 49, stopper; 50, tension spring; 51, guide ring; 52, conical guide cover; 53, third pressure sensor; 54, connecting ball; 55, electric control unit; 56, connecting plate; 57, U-shaped plate; 58, ear plate; 59, first oblique guide groove; 60, sliding cavity; 61, extension plate; 62, second oblique guide groove; 63, linkage unit; 64, arc plate; 65, support plate; 66, limit rod; 67, screw rod; 68, adjustment plate; 69, L-shaped plate ; 70. Support plate; 71. Lifting rod; 72. Upper friction wheel; 73. Lower friction wheel; 74. Guide rod; 75. T-shaped plate; 76. Second connecting spring; 77. Third electromagnetic suction cup; 78. Iron column; 79. Linkage gear; 80. Side plate; 81. Tooth plate; 82. Slide groove; 83. Baffle bar; 84. Mounting spring; 85. Shading plate; 86. Infrared travel switch; 87. Electromagnetic suction plate; 88. Push rod; 89. Iron plate; 90. Angle plate; 91. Third connecting spring. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0039] For example, see Figure 1-18 , the present invention provides the following technical solutions:

[0040] An intelligent electric actuator, specifically, comprises a valve body 1 and a valve stem 2 rotatably arranged inside the valve body 1; a valve plate 3 is fixed to the bottom end of the valve stem 2; a shaft sleeve 4 rotatably matched with the valve stem 2 is penetrated and arranged on the outer peripheral side of the valve body 1; an actuator shell 5 connected to the shaft sleeve 4 is fixed on the top end; a drive shaft 6 is rotatably arranged on the inner peripheral side of the actuator shell 5.

[0041] A rotating part 7 coaxial with the driving shaft 6 is rotatably arranged on the inner side of the actuator shell 5; an electromagnetic coil 8 is fixed to the inner side of the actuator shell 5, and sliding rods 9 are symmetrically fixed on both sides of the electromagnetic coil 8 on the inner side; a sliding part 10 adapted to the rotating part 7 is slidably arranged between the two sliding rods 9.

[0042] The rotating part 7 includes a horizontal shaft 11 rotatably arranged on the inner side of the execution shell 5; the outer side of the horizontal shaft 11 is sequentially provided with a first spiral groove 12 and a second spiral groove 13 that are connected to each other; a sleeve 14 that is sleeved with the drive shaft 6 is fixed at the end of the horizontal shaft 11; a plurality of connecting parts are evenly penetrated and slidably arranged on the outer side of the sleeve 14; the sliding part 10 includes a slide plate 15 that is slidably matched with the slide rod 9; an armature column 16 is fixed on the side of the slide plate 15; an extension rod 17 is fixed on the bottom of the slide plate 15; a first spiral groove 12 and a second spiral groove 13 that are connected to each other are fixed at the bottom of the extension rod 17. The groove 12 and the second spiral groove 13 are slidably matched with the ball head 18; the third connecting spring 91 mounted on the slide rod 9 is fixedly connected between the slide plate 15 and the inner wall of the execution shell 5; the guide rods 19 are symmetrically fixed on the inner circumferential side of the execution shell 5; a baffle 20 is fixed between the two guide rods 19; a first electromagnetic suction cup 21 is fixedly installed on the side of the baffle 20; a guide part 22 adapted to the connecting part is slidably arranged between the two guide rods 19; a plurality of slots 23 that are plug-in matched with the connecting part are evenly opened on the circumferential side of the drive shaft 6 near its end.

[0043] Working principle of the first embodiment:

[0044] When power is cut off, the electromagnetic coil 8 and the first electromagnetic suction cup 21 lose power at the same time, and the ball head 18 on the sliding part 10 is driven to slide from the first spiral groove 12 into the second spiral groove 13 under the elastic reset force of the third connecting spring 91. In this process, the rotating part 7 is driven to rotate synchronously together with each group of connecting parts, and the guide part 22 is driven to slide under the tension of the tension spring 50, thereby squeezing each group of connecting parts. When the plug rod 43 on the connecting part slides to a position coaxial with the slot 23, the plug rod 43 is inserted into the slot 23 under the action of the spring, completing the automatic connection between the horizontal axis 11 and the drive shaft 6. Through the linkage cooperation between the various components, the automatic rotation and closure of the valve plate 3 after power failure is realized, reducing safety hazards.

[0045] For example 2, please refer to Figure 1-18 , the second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a driven gear 24 is fixed to the top of the valve stem 2; a vertical shaft 25 is rotatably provided on the inner bottom surface of the actuator shell 5; a driving gear 26 meshing with the driven gear 24 is fixed to the circumferential side of the vertical shaft 25; a worm wheel 27 is fixed to the top of the vertical shaft 25; a worm 28 meshing with the worm wheel 27 is fixed to the circumferential side of the drive shaft 6; a driving motor 29 is fixed to the outer circumferential side of the actuator shell 5; the output end of the driving motor 29 is fixedly connected to one end of the drive shaft 6 through a reducer; an axis groove 30 rotatably matched with the horizontal axis 11 is provided on the inner circumferential side of the actuator shell 5; an annular groove 31 is provided on the inner wall of the axis groove 30; an annular rail 32 rotatably matched with the annular groove 31 is fixed to the circumferential side of the horizontal axis 11 near its end; a sealing cover 33 is screwed to the top of the actuator shell 5.

[0046] A junction box 34 is installed through the outer peripheral side of the execution shell 5; the electromagnetic coil 8 and the first electromagnetic suction cup 21 are electrically connected to the access power supply inside the junction box 34 respectively; a controller is arranged inside the junction box 34; the output end of the controller is electrically connected to the drive motor 29; a support rod 35 is fixed to the inner peripheral side of the execution shell 5; an angle plate 90 is fixed to the end of the support rod 35; a first pressure sensor 36 and a second pressure sensor 37 electrically connected to the input end of the controller are fixedly installed on both sides of the angle plate 90; a stop rod 38 is fixed to the top of the driven gear 24.

[0047] A number of positioning holes 39 are evenly arranged on the outer side surface of the sleeve 14; a number of U-shaped seats 40 are evenly fixed on the outer side surface of the sleeve 14; a lifting hole 41 is arranged on the top of the U-shaped seat 40; the connecting part includes a lifting sleeve 42 that slides with the lifting hole 41; an insert rod 43 that plugs with the positioning hole 39 is slidably arranged inside the lifting sleeve 42; the insert rod 43 plugs with the corresponding slot 23; a return spring is fixed between the insert rod 43 and the top of the lifting sleeve 42; a guide ball 44 is fixed on the top of the lifting sleeve 42; a support spring 45 is fixedly connected between the guide ball 44 and the U-shaped seat 40.

[0048] The guide portion 22 includes a mounting plate 46; guide holes 47 that slide with the guide rod 19 are symmetrically opened on the side of the mounting plate 46; an iron block 48 is fixed to the side of the mounting plate 46; a stopper 49 is fixed to the end of the guide rod 19; a tension spring 50 that is sleeved on the guide rod 19 is fixedly connected between the mounting plate 46 and the stopper 49; a guide ring 51 that matches the guide ball 44 is fixed to the bottom surface of the mounting plate 46; a conical guide cover 52 that matches the guide ball 44 is fixed to the end of the guide ring 51.

[0049] Working principle of the second embodiment:

[0050] Since the electromagnetic coil 8 and the first electromagnetic suction cup 21 are respectively electrically connected to the power supply inside the junction box 34, after an accidental power failure, the electromagnetic coil 8 and the first electromagnetic suction cup 21 are simultaneously powered off. After the electromagnetic coil 8 is powered off, the sliding part 10 is driven to slide in the direction away from the electromagnetic coil 8 under the elastic reset force of the third connecting spring 91, so that the ball head 18 slides into the second spiral groove 13 along the first spiral groove 12. Since the pitch of the first spiral groove 12 is greater than the pitch of the second spiral groove 13, the ball head 18 drives the horizontal shaft 11 to rotate slowly when sliding on the first spiral groove 12. When the ball head 18 slides on the second spiral groove 13, the speed at which the horizontal shaft 11 is driven to rotate is faster than the rotation speed of the ball head 18 when sliding on the first spiral groove 12.

[0051] After the first electromagnetic suction cup 21 is powered off, the guide part 22 is driven to slide in the direction away from the first electromagnetic suction cup 21 under the tension of the tension spring 50. In the initial state, the insertion rods 43 on each group of connecting parts are inserted into the corresponding positioning holes 39, and the guide balls 44 are attached to the inner wall of the conical guide cover 52. At this time, the support spring 45 is in a normal state, the reset spring is in a normal state, and the bottom end of the insertion rod 43 just fits against the outer peripheral side of the drive shaft 6.

[0052] During the sliding of the guide portion 22 in the direction away from the first electromagnetic suction cup 21, the guide ball 44 slides from the inner wall of the conical guide cover 52 into the inner wall of the guide ring 51. During this process, the guide ball 44 is squeezed, causing the lifting sleeve 42 to slide down along the U-shaped seat 40, and the support spring 45 is continuously compressed. The lifting sleeve 42 presses the insertion rod 43. When the bottom end of the insertion rod 43 is not coaxial with the corresponding slot 23, the return spring is compressed. Under the elastic pressure of the return spring, the bottom end of the insertion rod 43 is driven to press against the outer peripheral side of the drive shaft 6. Each group of insertion rods 43 rotates with the slowly rotating horizontal shaft 11. When the rotating insertion rod 43 rotates to be coaxial with the corresponding slot 23, the elastic force of the return spring drives the insertion rod 43 to be inserted into the corresponding slot 23, completing the automatic fixed limit of the horizontal shaft 11 and the drive shaft 6. Thereafter, the rotation of the horizontal shaft 11 drives the drive shaft 6 to rotate synchronously.

[0053] For example 3, please refer to Figure 1-18, the third embodiment of the present invention is improved as follows on the basis of the second embodiment. Specifically, a third pressure sensor 53 electrically connected to the input end of the controller is installed at the end of the first electromagnetic suction cup 21; connecting balls 54 are symmetrically fixed on two opposite sides of the mounting plate 46; an electric control unit 55 adapted to the connecting ball 54 is fixedly installed on the top of the baffle 20; the electric control unit 55 includes a connecting plate 56 fixedly installed on the top of the baffle 20; a U-shaped plate 57 is fixed on the top of the connecting plate 56; ear plates 58 are symmetrically fixed on both sides of the inner wall of the U-shaped plate 57; first oblique guide grooves 59 adapted to the connecting ball 54 are symmetrically opened on two opposite sides of the ear plate 58; a sliding cavity 60 is opened on one side of the ear plate 58; an extension plate 61 is slidably arranged inside the sliding cavity 60; a second oblique guide groove 62 is opened on the side of the extension plate 61; a first connecting spring is fixedly connected between the extension plate 61 and the inner wall of the sliding cavity 60; a second electromagnetic suction cup electrically connected to the output end of the controller is fixedly installed on the inner wall of the sliding cavity 60; an iron plate is fixed on the side of the extension plate 61.

[0054] A linkage part 63 is fixedly installed on the inner peripheral side of the actuator shell 5; the linkage part 63 includes an arc-shaped plate 64 fixedly installed on the inner peripheral side of the actuator shell 5; a support plate 65 is fixed to the bottom surface of the arc-shaped plate 64; a limit rod 66 is symmetrically fixed on the surface of the support plate 65; a screw 67 is rotatably arranged on the surface of the support plate 65; an adjustment plate 68 is slidably arranged between the two limit rods 66 and is threadably matched with the screw 67; an L-shaped plate 69 is fixed on the side of the adjustment plate 68; a support plate 70 is fixed on the L-shaped plate 69; a lifting rod 71 is slidably arranged on the top of the support plate 70; an upper friction wheel 72 is fixed to the bottom end of the lifting rod 71; and a lower friction wheel 73 is fixed to the end of the worm gear 27.

[0055] A guide rod 74 is symmetrically fixed between the L-shaped plate 69 and the support plate 70; a T-shaped plate 75 is slidably arranged between the two guide rods 74 and slides through the lifting rod 71; a second connecting spring 76 is symmetrically fixed between the T-shaped plate 75 and the support plate 70 and is sleeved on the guide rod 74; a third electromagnetic suction cup 77 electrically connected to the power supply connected to the inside of the junction box 34 is fixed to the bottom surface of the support plate 70; an iron column 78 is fixed to the surface of the T-shaped plate 75; a linkage gear 79 is fixed to the top of the lifting rod 71; a side plate 80 is fixed to the side of the L-shaped plate 69; two opposite sides of the side plate 80 are symmetrically fixed with slide rails; a second connecting spring 76 is slidably arranged on the top of the support plate 70 and slides with the side plate 80 A toothed plate 81 is provided with a movable fit; a slide groove 82 that slidably fits with the side plate 80 is provided on the side of the toothed plate 81; limit grooves that slidably fit with the slide rail are symmetrically provided on both sides of the inner wall of the slide groove 82; a baffle 83 is fixed to the end of the toothed plate 81; a mounting spring 84 is fixed between the baffle 83 and the side plate 80; a shading plate 85 is fixed to the top of the toothed plate 81; an infrared travel switch 86 that is electrically connected to the input end of the controller is fixed to the top of the L-shaped plate 69; an electromagnetic suction plate 87 that is electrically connected to the output end of the controller is fixed to the inner side of the execution shell 5; a push rod 88 is fixed to the top of the slide plate 15; and an iron plate 89 is fixed to the top of the push rod 88.

[0056] Working principle of the third embodiment:

[0057] The rotation of the horizontal axis 11 drives the driving shaft 6 to rotate, thereby driving the worm wheel 27 to rotate, and then driving the worm 28 to rotate. The worm 28 drives the vertical axis 25 together with the driving gear 26 to rotate, thereby driving the driven gear 24 and the valve plate 3 to rotate synchronously. When the baffle rod 38 rotates to be blocked by the angle plate, the driven gear 24 cannot rotate. At this time, the valve plate 3 completes automatic rotation and closure; before the accidental power failure, the opening of the valve plate 3 determines the initial position of the baffle rod 38. In the initial state, the valve plates 3 with different openings have different rotation and closing angles after the accidental power failure, and will eventually be automatically closed. It’s just that under different opening conditions, the sliding distance of the ball head 18 on the second spiral groove 13 is different.

[0058] When the power is accidentally cut off, the third electromagnetic suction cup 77 electrically connected to the power supply inside the junction box 34 is powered off, and the T-shaped plate 75 is driven to slide and descend along the guide rod 74 under the elastic force of the second connecting spring 76, so that the upper friction wheel 72 is pressed against the lower friction wheel 73 at the end of the worm gear 27. When the drive shaft 6 rotates with the horizontal axis 11, the upper friction wheel 72 and the lifting rod 71 are driven to rotate synchronously through the lower friction wheel 73, thereby driving the linkage gear 79 to rotate, and then driving the tooth plate 81 to slide along the side of the side plate 80, the corresponding installation spring 84 is stretched, and the shading plate 85 moves away from the infrared travel switch 86 with the tooth plate 81. The distance between the shading plate 85 and the infrared travel switch 86 corresponds to the angle at which the valve plate 3 rotates to close under the specified opening.

[0059] When the guide portion 22 is sliding, the connecting ball 54 slides and squeezes the second inclined guide groove 62 on the side of the extension plate 61, so that the extension plate 61 slides along the sliding cavity 60 into the interior of the ear plate 58, and the first connecting spring is compressed. When the connecting ball 54 is disengaged from the second inclined guide groove 62, under the elastic restoring force of the first connecting spring, the extension plate 61 is driven to slide out of the sliding cavity 60 and reset.

[0060] When the power is restored, the electromagnetic coil 8 and the first electromagnetic suction cup 21 are energized synchronously. The electromagnetic coil 8 is energized to attract the armature column 16, so that the sliding part 10 slides along the slide rod 9 toward the electromagnetic coil 8, thereby driving the ball head 18 to slide along the second spiral groove 13 toward the first spiral groove 12, driving the horizontal axis 11 to rotate in the opposite direction, and the first electromagnetic suction cup 21 is energized to attract the iron block 48 to drive the guide part 22 to slide in the direction close to the first electromagnetic suction cup 21. Since the connecting ball 54 is blocked by the extension plate 61, the connecting ball 54 on the guide part 22 is pressed tightly against the extension plate 61, ensuring that during this process, each group of connecting parts maintains a fixed limit position on the drive shaft 6, and through the linkage cooperation between the various components, the valve plate 3 is driven to rotate in a certain direction. During this process, the lifting rod 71 is reversed to drive the linkage gear 79 to rotate in the opposite direction, so that the shading plate 85 slides in the direction close to the infrared travel switch 86. When the shading plate 85 blocks the infrared travel switch 86, the infrared travel switch 86 transmits a signal to the controller, and the controller controls the third electromagnetic The suction cup 77 is electrically attracted to the iron column 78, driving the upper friction wheel 72 to rise and reset and disengage from the lower friction wheel 73. At this time, the controller controls the second electromagnetic suction cup to be electrically attracted to the iron plate, thereby driving the extension plate 61 to be stored in the sliding cavity 60, releasing the limit on the connecting ball 54, and the sliding part 10 slides and resets in the direction close to the first electromagnetic suction cup 21, thereby releasing the fixed restriction of each group of connecting parts on the drive shaft 6, and the drive shaft 6 does not rotate with the rotation of the horizontal axis 11 thereafter. During this process, the controller controls the electromagnetic suction plate 87 to be electrically attracted to the iron plate 89, and the sliding part 10 stops sliding. When the armature column 16 slides against the third pressure sensor 53, the third pressure sensor 53 transmits a signal to the controller, and the controller controls the electromagnetic suction plate 87 to lose power, releasing the fixed restriction on the sliding part 10, and the sliding part 10 slides and resets in the direction close to the electromagnetic coil 8. During this process, the ball head 18 slides and resets along the first spiral groove 12, driving the horizontal axis 11 to rotate and reset, so that the valve plate 3 automatically rotates to the opening state before power failure.

[0061] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0065] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent electric actuator, comprising a valve body (1) and a valve stem (2) rotatably arranged inside the valve body (1); a valve plate (3) is fixed to the bottom end of the valve stem (2); the characteristics are: The outer peripheral side surface of the valve body (1) is penetrated and connected to a shaft sleeve (4) which is rotatably matched with the valve stem (2); an actuator shell (5) which is connected to the shaft sleeve (4) is fixed at the top end; and a drive shaft (6) is rotatably disposed through the inner peripheral side surface of the actuator shell (5); A rotating portion (7) coaxial with the drive shaft (6) is rotatably disposed through the inner circumferential side surface of the actuator shell (5); an electromagnetic coil (8) is fixed to the inner circumferential side surface of the actuator shell (5), and sliding rods (9) are symmetrically fixed on both sides of the electromagnetic coil (8) on the inner circumferential side surface; a sliding portion (10) adapted to the rotating portion (7) is slidably disposed between the two sliding rods (9); The rotating part (7) comprises a transverse axis (11) rotatably arranged on the inner peripheral side of the actuator shell (5); the outer peripheral side of the transverse axis (11) is sequentially provided with a first spiral groove (12) and a second spiral groove (13) which are connected to each other; a sleeve (14) which is sleeved with the drive shaft (6) is fixed at the end of the transverse axis (11); a plurality of connecting parts are evenly penetrated and slidably arranged on the outer peripheral side of the sleeve (14); the sliding part (10) comprises a slide plate (15) which is slidably matched with the slide rod (9); an armature column (16) is fixed to the side of the slide plate (15); an extension rod (17) is fixed to the bottom surface of the slide plate (15); a ball head (18) which is slidably matched with the first spiral groove (12) and the second spiral groove (13) is fixed to the bottom end of the extension rod (17); a third connecting spring (91) which is sleeved on the slide rod (9) is fixedly connected between the slide plate (15) and the inner wall of the actuator shell (5); Guide rods (19) are symmetrically fixed on the inner circumferential side of the execution shell (5); a baffle (20) is fixed between the two guide rods (19); a first electromagnetic suction cup (21) is fixedly mounted on the side of the baffle (20); a guide portion (22) adapted to the connecting portion is slidably arranged between the two guide rods (19); and a plurality of slots (23) that are pluggable and matched with the connecting portion are evenly arranged on the circumferential side of the drive shaft (6) near its end.

2. The intelligent electric actuator according to claim 1, characterized in that: A driven gear (24) is fixed to the top of the valve stem (2); a vertical shaft (25) is rotatably provided on the inner bottom surface of the actuator housing (5); a driving gear (26) meshing with the driven gear (24) is fixed to the peripheral side surface of the vertical shaft (25); a worm gear (27) is fixed to the top of the vertical shaft (25); a worm (28) meshing with the worm gear (27) is fixed to the peripheral side surface of the drive shaft (6); a drive motor (29) is fixed to the outer peripheral side surface of the actuator housing (5); an output end of the drive motor (29) is fixedly connected to one end of the drive shaft (6) via a reducer; The inner circumferential side surface of the actuator housing (5) is provided with an axial groove (30) rotatably engaged with the transverse shaft (11); the inner wall of the axial groove (30) is provided with an annular groove (31); an annular rail (32) rotatably engaged with the annular groove (31) is fixed to the circumferential side surface of the transverse shaft (11) near its end; and a sealing cover (33) is screwed to the top end of the actuator housing (5).

3. The intelligent electric actuator according to claim 2, characterized in that: A junction box (34) is installed through the outer peripheral side of the execution shell (5); the electromagnetic coil (8) and the first electromagnetic suction cup (21) are respectively electrically connected to the access power supply inside the junction box (34); a controller is arranged inside the junction box (34); the output end of the controller is electrically connected to the drive motor (29); A support rod (35) is fixed to the inner side surface of the execution housing (5); an angle plate (90) is fixed to the end of the support rod (35); a first pressure sensor (36) and a second pressure sensor (37) electrically connected to the controller input end are respectively fixedly mounted on the two side surfaces of the angle plate (90); and a stop rod (38) is fixed to the top end of the driven gear (24).

4. The intelligent electric actuator according to claim 3, characterized in that: A plurality of positioning holes (39) are evenly formed on the outer peripheral side of the sleeve (14); a plurality of U-shaped seats (40) are evenly fixed on the outer peripheral side of the sleeve (14); and a lifting hole (41) is formed on the top of the U-shaped seat (40); The connecting portion comprises a lifting sleeve (42) that is slidably matched with the lifting hole (41); an insertion rod (43) that is plug-matched with the positioning hole (39) is slidably arranged inside the lifting sleeve (42); the insertion rod (43) is plug-matched with the corresponding slot (23); a return spring is fixed between the insertion rod (43) and the top of the lifting sleeve (42); a guide ball (44) is fixed at the top of the lifting sleeve (42); and a support spring (45) is fixedly connected between the guide ball (44) and the U-shaped seat (40).

5. The intelligent electric actuator according to claim 4, characterized in that: The guide portion (22) comprises a mounting plate (46); a guide hole (47) slidably engaged with the guide rod (19) is symmetrically provided on a side surface of the mounting plate (46); an iron block (48) is fixed to a side surface of the mounting plate (46); a stopper (49) is fixed to an end of the guide rod (19); a tension spring (50) sleeved on the guide rod (19) is fixedly connected between the mounting plate (46) and the stopper (49); A guide ring (51) matching the guide ball (44) is fixed to the bottom surface of the mounting plate (46); and a conical guide cover (52) matching the guide ball (44) is fixed to the end of the guide ring (51).

6. The intelligent electric actuator according to claim 5, characterized in that: A third pressure sensor (53) electrically connected to the controller input end is mounted on the end of the first electromagnetic suction cup (21); connecting balls (54) are symmetrically fixed to two opposite sides of the mounting plate (46); and an electric control unit (55) adapted to the connecting ball (54) is fixedly mounted on the top of the baffle (20); The electric control unit (55) comprises a connecting plate (56) fixedly mounted on the top of the baffle (20); a U-shaped plate (57) is fixedly mounted on the top of the connecting plate (56); ear plates (58) are symmetrically fixedly mounted on both sides of the inner wall of the U-shaped plate (57); first oblique guide grooves (59) adapted to the connecting ball (54) are symmetrically formed on two opposite sides of the ear plate (58); a sliding cavity (60) is formed on one side of the ear plate (58); an extension plate (61) is slidably arranged inside the sliding cavity (60); a second oblique guide groove (62) is formed on the side of the extension plate (61); a first connecting spring is fixedly connected between the extension plate (61) and the inner wall of the sliding cavity (60); a second electromagnetic suction cup electrically connected to the output end of the controller is fixedly mounted on the inner wall of the sliding cavity (60); and an iron plate is fixedly mounted on the side of the extension plate (61).

7. The intelligent electric actuator according to claim 6, characterized in that: A linkage part (63) is fixedly mounted on the inner peripheral side of the actuator shell (5); the linkage part (63) comprises an arc-shaped plate (64) fixedly mounted on the inner peripheral side of the actuator shell (5); a support plate (65) is fixedly mounted on the bottom surface of the arc-shaped plate (64); a limit rod (66) is symmetrically fixedly mounted on the surface of the support plate (65); a screw rod (67) is rotatably mounted on the surface of the support plate (65); an adjustment plate (68) is slidably mounted between the two limit rods (66) and is rotatably matched with the screw rod (67); an L-shaped plate (69) is fixedly mounted on the side of the adjustment plate (68); a support plate (70) is fixedly mounted on the L-shaped plate (69); a lifting rod (71) is slidably mounted through the top of the support plate (70); an upper friction wheel (72) is fixedly mounted on the bottom end of the lifting rod (71); and a lower friction wheel (73) is fixedly mounted on the end of the worm gear (27).

8. The intelligent electric actuator according to claim 7, characterized in that: A guide rod (74) is symmetrically fixed between the L-shaped plate (69) and the support plate (70); a T-shaped plate (75) is slidably arranged between the two guide rods (74) and penetrates and slides with the lifting rod (71); a second connection spring (76) sleeved on the guide rod (74) is symmetrically fixed between the T-shaped plate (75) and the support plate (70); a third electromagnetic suction cup (77) electrically connected to the power supply connected to the inside of the junction box (34) is fixed on the bottom surface of the support plate (70); an iron column (78) is fixed on the surface of the T-shaped plate (75); A linkage gear (79) is fixed to the top of the lifting rod (71); a side plate (80) is fixed to the side of the L-shaped plate (69); slide rails are symmetrically fixed to two opposite sides of the side plate (80); a tooth plate (81) is slidably provided on the top of the support plate (70) and is slidably matched with the side plate (80); a slide groove (82) is provided on the side of the tooth plate (81) and is slidably matched with the side plate (80); limiting grooves slidably matched with the slide rails are symmetrically provided on both sides of the inner wall of the slide groove (82); and a tooth plate (81) is fixed at the end thereof. a baffle (83); a mounting spring (84) is fixed between the baffle (83) and the side plate (80); a shading plate (85) is fixed to the top of the toothed plate (81); an infrared travel switch (86) electrically connected to the input end of the controller is fixed to the top of the L-shaped plate (69); an electromagnetic suction plate (87) electrically connected to the output end of the controller is fixed to the inner peripheral side of the execution shell (5); a push rod (88) is fixed to the top of the slide plate (15); and an iron plate (89) is fixed to the top of the push rod (88).

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