A manual motorized actuator

Abstract

The application discloses a kind of manual electric actuators, and technical scheme main points include shell and the drive element being arranged in shell, the drive element includes electric drive piece being arranged in shell and manual piece being arranged outside shell;Intermediate piece is fixedly arranged in the shell;The shell includes the upper shell and lower shell that are mutually buckled and fixed;Manual piece is arranged outside the upper shell;External connecting piece is further arranged on the lower shell;External connecting piece is fixed with intermediate piece by buckling through lower shell;The drive element further includes output shaft, which is connected with external valve body through external connecting piece, the application has the beneficial effects of controlling the opening and closing of straight stroke stop valve, wide application range, easy to operate, preventing the output shaft from being stuck, and automatically opening and closing the motor.

Description

Technical Field

[0001] The present invention relates to an actuator, and more particularly to a manual electric actuator. Background Technology

[0002] Actuators are an essential component of automatic control systems. Their function is to receive control signals from the controller, change the magnitude of the controlled medium, and thus maintain the controlled variable at the required value or within a certain range. Actuators can be classified into three main categories according to their energy source: pneumatic, hydraulic, and electric.

[0003] Actuators are used to control the opening and closing of valves. There are various types of valves, and the opening and closing of linear stop valves can be controlled by actuators.

[0004] Currently, the actuator controls the opening and closing of the linear stop valve through the output shaft. The output shaft is controlled to rotate by the actuator, and the rotation power can be manual or electric. However, the output shaft may get stuck during rotation, making the actuator difficult to use. Electric start and stop cannot be controlled through internal structures such as stroke gears, and the actuator cannot be connected to linear stop valves of different specifications, thus limiting its applicability. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a manual electric actuator that controls the opening and closing of a linear stop valve, has a wide range of applications, is easy to operate, prevents the output shaft from jamming, and has the beneficial effects of automatically starting and stopping the motor.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a manual-electric actuator, comprising a housing and a drive element disposed within the housing, characterized in that: the drive element comprises an electric drive component disposed within the housing and a manual component disposed outside the housing; the drive element further comprises an output shaft passing through an external connector and connected to an external valve body; the output gear comprises a gear column and a gear disc disposed outside the gear column; a first external gear ring and a second external gear ring are disposed on the gear column above the gear disc; the gear column is hollow; an internal thread is disposed within the gear column; an external thread is disposed at the upper end of the output shaft, and the external thread is threadedly connected to the internal thread of the gear column; a screw is threadedly connected to the upper end of the gear column; a retaining spring is disposed below the screw; a retaining ball is disposed below the retaining spring; four fixing points are disposed between the gear disc and the gear column; an annular spring is mounted on the side of the gear disc where the fixing points are located; the annular spring is flared. The upper edge bends downwards and outwards; an annular groove is provided on the lower side of the intermediate plate; an annular gasket is provided in the annular groove; the annular spring elastically abuts against the lower side of the annular gasket, and when the output gear rotates, it drives the annular spring to rotate; the output shaft is threadedly connected to the output gear and moves up and down when the output gear rotates; the output shaft abuts against the valve stem, and the valve stem pushes the output shaft to move upwards, thereby pushing the output gear to move upwards; the annular spring is squeezed and deformed, exerting a force to push the output gear to move in the direction of the linear stop valve stem; a first annular notch is provided on the intermediate plate; during the upward movement of the output gear, the fixing point is located in the first annular notch; the end face of the gear column abuts against the stroke gear, pushing the stroke gear to move up and down; an annular protrusion is provided on the side of the stroke gear; the annular protrusion is opposite to the micro switch, and when the output gear moves upwards and pushes the stroke gear to move, the annular protrusion contacts and controls the switching state of the micro switch.

[0007] The invention is further configured such that: an intermediate component is fixedly disposed within the housing; the housing includes an upper housing and a lower housing that are interlocked and fixed together; the manual component is disposed outside the upper housing; an external connector is also disposed on the lower housing; the external connector passes through the lower housing and is interlocked and fixed to the intermediate component; the intermediate component includes an intermediate housing with a receiving groove and an intermediate plate that covers the receiving groove; the intermediate housing is disposed within the lower housing; the electric drive component includes a motor disposed outside the intermediate housing; the motor shaft of the motor passes through the intermediate housing and is connected to a gear assembly within the receiving groove; the gear assembly drives the output shaft to move up and down.

[0008] The present invention is further configured such that: a circuit board is disposed above the intermediate plate; the circuit board is connected to the intermediate plate through a plurality of fixed posts; the stroke gear is disposed between the intermediate plate and the circuit board; the stroke gear meshes with the first external gear ring; and the rotation of the output gear drives the stroke gear to rotate.

[0009] The invention is further configured such that: a stroke gear shaft is provided at both ends of the stroke gear; the lower end of the stroke gear shaft is rotatably connected to the intermediate plate, and the upper end passes through the circuit board and is rotatably connected to the inner wall of the upper housing; two micro switches are provided on the lower surface of the circuit board; the micro switches are opposite to the annular protrusion; a potentiometer for calculating the angular stroke is provided on the circuit board; the gear assembly includes several transmission gears and an output gear.

[0010] The present invention is further configured such that: an intermediate spring is provided between the intermediate plate and the circuit board; a fulcrum for maintaining the balance of the travel gear is also provided on the intermediate plate; and the intermediate spring is sleeved on the travel gear shaft.

[0011] The present invention is further configured such that: a gap is provided between the upper end of the output shaft and the gear post; the abutting ball elastically abuts against the upper end of the output shaft to prevent the output shaft from jamming with the gear post after rotation and tightening.

[0012] The present invention is further configured such that: the manual component includes a manual knob and a rotating indicator disk disposed around the manual knob; the upper housing is provided with a circular groove that cooperates with the rotating indicator disk; a circular hole is provided in the center of the circular groove; the manual knob is drivenly connected to a connecting post; the connecting post passes through the circular hole and is drivenly connected to a gear post; the connecting post is drivenly connected to the rotating indicator disk.

[0013] The invention is further configured such that: the lower end of the connecting post engages with the second external gear ring; the upper end of the connecting post is provided with a third external gear ring; a plug-in post is provided above the third external gear ring; the plug-in post is provided with a first through hole and a second through hole; the diameter of the first through hole is smaller than the diameter of the second through hole, and the first through hole is located below the second through hole; the manual knob includes a plug-in tube that mates with the plug-in post; a plug-in rod is provided inside the plug-in tube; the plug-in rod is inserted into the plug-in post; a first internal gear ring is provided inside the plug-in tube; and the diameter of the plug-in rod is adapted to the diameter of the first through hole.

[0014] The invention is further configured such that: a support spring is provided in the second through hole; the plug rod is provided in the support spring; the first internal gear ring is adapted to the third external gear ring, and under the supporting force of the support spring, the first internal gear ring and the third external gear ring disengage; the rotating indicator disk is configured as annular; the rotating indicator disk limits the edge of the manual knob to prevent the manual knob from disengaging from the rotating indicator disk under the force of the support spring.

[0015] The present invention is further configured such that: the rotating indicator disk includes a limiting ring and a second internal gear ring disposed below the limiting ring; the second internal gear ring and the third external gear ring are connected by an intermediate gear transmission; an intermediate column is disposed in the circular groove; the intermediate column is inserted into the intermediate gear; the intermediate gear meshes with the lower end of the third external gear ring.

[0016] The present invention is further configured such that: an annular disk is provided between the lower end of the connecting post and the third external gear ring; a sealing rubber ring is provided between the annular disk and the edge of the circular hole; and the sealing rubber ring seals the gap between the edge of the circular hole and the connecting post.

[0017] The present invention is further configured such that: the upper shell surface of the circular groove edge is provided with a scale; the rotating indicator disk is provided with an indicator needle; after the rotating indicator disk is rotated, the indicator needle is used to indicate the scale after rotation.

[0018] The invention is further configured such that: the external connector is rotatably connected to a connecting nut; the connecting nut is threadedly connected to a linear stroke shut-off valve; the lower end of the output shaft has a triangular cross-section; the intermediate housing has a triangular through hole that facilitates the lower end of the output shaft to pass through and limits the position of the output shaft; the lower end of the output shaft is opposite to the valve stem of the linear stroke shut-off valve.

[0019] The invention is further configured such that: a plurality of fan-shaped holes are provided around the triangular through hole; the external connector includes a hollow body tube; one end of the body tube is provided with a buckle plate, and the other end is provided with a limiting ring; the fan-shaped holes cooperate with two buckle plates, the buckle plates are arc-shaped and have barbs at their ends; the external connector also includes a snap ring disposed between the two buckle plates.

[0020] The invention is further configured such that: the limiting ring axially limits the connecting nut; the linear stroke shut-off valve is provided with an external thread; the connecting thread is provided with a limiting inner ring that mates with the limiting ring, and the limiting inner ring and the limiting ring mutually limit each other; the connecting nut is threadedly connected to the external thread on the linear stroke shut-off valve, so that the lower end of the output shaft is opposite to the valve stem of the linear stroke shut-off valve. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0022] Figure 2 This is a cross-sectional view of this embodiment;

[0023] Figure 3 This is a cross-sectional view of this embodiment;

[0024] Figure 4 This is a schematic diagram of the manual knob structure in this embodiment;

[0025] Figure 5 This is a schematic diagram of the shell structure in this embodiment;

[0026] Figure 6 This is a schematic diagram of the shell structure in this embodiment;

[0027] Figure 7 This is a schematic diagram of the rotating indicator disk structure in this embodiment;

[0028] Figure 8 This is a schematic diagram of the shell structure in this embodiment;

[0029] Figure 9 This is a schematic diagram of the structure of this embodiment (excluding the housing);

[0030] Figure 10 This is a cross-sectional view of this embodiment (excluding the housing);

[0031] Figure 11 This is a schematic diagram of the intermediate shell structure in this embodiment;

[0032] Figure 12 This is a schematic diagram of the intermediate shell structure in this embodiment;

[0033] Figure 13 This is a schematic diagram of the external connector structure in this embodiment;

[0034] Figure 14 This is a schematic diagram of the output shaft structure in this embodiment;

[0035] Figure 15 This is a schematic diagram of the output gear structure in this embodiment;

[0036] Figure 16 This is a schematic diagram of the connecting column structure in this embodiment;

[0037] Figure 17 This is a schematic diagram of the gear assembly structure in this embodiment.

[0038] Reference numerals: 1. Upper housing; 2. Lower housing; 3. External connector; 4. Output shaft; 5. Receptacle groove; 6. Intermediate housing; 7. Intermediate plate; 8. Motor; 9. Motor gear; 10. Transmission gear; 11. Output gear; 12. Gear post; 13. Gear disc; 14. First external gear ring; 15. Second external gear ring; 16. Abutment spring; 17. Abutment ball; 18. Fixing point; 19. Circuit board; 20. Fixing post; 21. Stroke gear; 22. Stroke gear shaft; 23. Micro switch; 24. Positioning ring; 25. Potentiometer; 26. Manual knob; 27. Rotation indicator; 28. Circular groove; 29. ​​Circular hole; 30. Connecting post; 31. 31. Third external gear ring; 32. Insertion post; 33. Insertion tube; 34. Insertion rod; 35. First internal gear ring; 36. Insertion hole; 37. Support spring; 38. Limiting ring; 39. Second internal gear ring; 40. Intermediate gear; 41. Intermediate post; 42. Annular disc; 43. Sealing rubber ring; 44. Connecting nut; 45. Triangular through hole; 46. Fan-shaped hole; 47. Body tube; 48. Snap-on plate; 49. Limiting ring; 50. Barb; 51. Limiting inner ring; 52. Annular groove; 53. Arc-shaped limiting plate; 54. Screw; 55. Annular spring; 56. Snap-on ring; 57. Annular washer; 58. Intermediate spring; 59. Pivot point; 60. First annular notch. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] This embodiment discloses a manual electric actuator, such as... Figures 1 to 17As shown, it controls the opening and closing of a linear stop valve, has a wide range of applications, is easy to operate, prevents output shaft jamming, and has the beneficial effects of automatically starting and closing the motor. A manual-electric actuator includes a housing and a drive element disposed within the housing. The drive element includes an electric drive component disposed within the housing and a manual component disposed outside the housing. The drive element also includes an output shaft 4 that passes through an external connector 3 and connects to an external valve body. The output gear 11 includes a gear post 12 and a gear disc 13 disposed outside the gear post 12. A first external gear ring 14 and a second external gear ring 15 are disposed on the gear post 12 above the gear disc 13. The gear post 12 is hollow. The gear shaft 4 has an internal thread; the upper end of the output shaft 4 has an external thread, which is threaded to the internal thread of the gear post 12; a screw 54 is threaded to the upper end of the gear post 12; a retaining spring 16 is provided below the screw 54; a retaining ball 17 is provided below the retaining spring 16; four fixing points 18 are provided between the gear disk 13 and the gear post 12; annular spring pieces 55 are installed on the side of the gear disk 13 where the fixing points 18 are located; the annular spring pieces 55 are flared, and the upper edge is bent downward and outward; An annular groove is provided on the lower side of the intermediate plate 7; an annular gasket 57 is provided in the annular groove; the annular spring 55 elastically abuts against the lower side of the annular gasket 57, and when the output gear 11 rotates, it drives the annular spring 55 to rotate; the output shaft 4 is threadedly connected to the output gear 11 and moves up and down when the output gear 11 rotates; the output shaft 4 abuts against the valve stem, and the valve stem pushes the output shaft 4 to move upward, thereby pushing the output gear 11 to move upward; the annular spring 55 is compressed and deformed to push the output gear 11 upward. The force acting on the valve stem of the linear stop valve to move in the direction of movement; the intermediate plate 7 is provided with a first annular notch 60; during the upward movement of the output gear 11, the fixed point 18 is located within the first annular notch 60; the end face of the gear column 12 abuts against the stroke gear 21, pushing the stroke gear 21 to move up and down; an annular protrusion is provided on the side of the stroke gear 21; the annular protrusion is opposite to the micro switch 23, and when the output gear 11 moves upward and pushes the stroke gear 21 to move, the annular protrusion contacts and controls the switching state of the micro switch 23.

[0041] An intermediate component is fixedly disposed inside the housing; the housing includes an upper housing 1 and a lower housing 2 that are interlocked and fixed together; the manual component is disposed outside the upper housing 1; an external connector 3 is also disposed on the lower housing 2; the external connector 3 passes through the lower housing 2 and is interlocked and fixed to the intermediate component; the intermediate component includes an intermediate housing 6 with a receiving groove 5 and an intermediate plate 7 that covers the receiving groove 5; the intermediate housing 6 is disposed inside the lower housing 2; the electric drive component includes a motor 8 disposed outside the intermediate housing 6; the motor shaft of the motor 8 passes through the intermediate housing 6 and is connected to a gear assembly inside the receiving groove 5; the gear assembly drives the output shaft 4 to move up and down.

[0042] A circuit board 19 is disposed above the intermediate plate 7; the circuit board 19 is connected to the intermediate plate 7 through several fixed posts 20; the stroke gear 21 is disposed between the intermediate plate 7 and the circuit board 19; the stroke gear 21 meshes with the first external gear ring 14; the output gear 11 rotates to drive the stroke gear 21 to rotate.

[0043] The stroke gear 21 has a stroke gear 21 shaft at both ends; the lower end of the stroke gear 21 shaft is rotatably connected to the intermediate plate 7, and the upper end passes through the circuit board 19 and is rotatably connected to the inner wall of the upper housing 1; the micro switch 23 is provided on the lower surface of the circuit board 19, and there are two of them; the micro switch 23 is opposite to the annular protrusion; the circuit board 19 is provided with a potentiometer 25 for calculating the angular stroke; the gear assembly includes several transmission gears 10 and output gears 11.

[0044] An intermediate spring 58 is provided between the intermediate plate 7 and the circuit board 19; a fulcrum 59 for maintaining the balance of the stroke gear 21 is also provided on the intermediate plate 7; the intermediate spring 58 is sleeved on the shaft of the stroke gear 21.

[0045] The upper end of the output shaft 4 is provided with a gap between it and the gear column 12; the abutting ball 17 elastically abuts against the upper end of the output shaft 4 to prevent the output shaft 4 from getting stuck with the gear column 12 after it is rotated and tightened.

[0046] The manual component includes a manual knob 26 and a rotating indicator disk 27 disposed around the manual knob 26; the upper housing 1 is provided with a circular groove 28 that mates with the rotating indicator disk 27; a circular hole 29 is provided in the center of the circular groove 28; the manual knob 26 is connected to a connecting post 30; the connecting post 30 passes through the circular hole 29 and is connected to a gear post 12; the connecting post 30 is connected to the rotating indicator disk 27.

[0047] The lower end of the connecting post 30 is engaged with the second external gear ring 15; the upper end of the connecting post 30 is provided with a third external gear ring 31; a plug-in post 32 is provided above the third external gear ring 31; a first through hole and a second through hole are provided inside the plug-in post 32; the diameter of the first through hole is smaller than the diameter of the second through hole, and the first through hole is located below the second through hole; the manual knob 26 includes a plug-in tube 33 that cooperates with the plug-in post 32; a plug-in rod 34 is provided inside the plug-in tube 33; the plug-in rod 34 is inserted into the plug-in post 32; a first internal gear ring 35 is provided inside the plug-in tube 33; the diameter of the plug-in rod 34 is adapted to the diameter of the first through hole.

[0048] A support spring 37 is provided in the second through hole; the plug rod 34 is provided in the support spring 37; the first internal gear ring 35 is adapted to the third external gear ring 31, and under the supporting force of the support spring 37, the first internal gear ring 35 and the third external gear ring 31 are disengaged; the rotating indicator disk 27 is set as an annular shape; the rotating indicator disk 27 limits the edge of the manual knob 26 to prevent the manual knob 26 from disengaging from the rotating indicator disk 27 under the force of the support spring 37.

[0049] The rotating indicator disk 27 includes a limiting ring 38 and a second internal gear ring 39 disposed below the limiting ring 38; the second internal gear ring 39 and the third external gear ring 31 are connected by an intermediate gear 40; an intermediate post 41 is disposed in the circular groove 28; the intermediate post 41 is inserted into the intermediate gear 40; the intermediate gear 40 meshes with the lower end of the third external gear ring 31.

[0050] An annular disk 42 is provided between the lower end of the connecting post 30 and the third external gear ring 31; a sealing rubber ring 43 is provided between the annular disk 42 and the edge of the circular hole 29; the sealing rubber ring 43 seals the gap between the edge of the circular hole 29 and the connecting post 30.

[0051] The upper shell 1 surface at the edge of the circular groove 28 is provided with a scale; the rotating indicator disk 27 is provided with an indicator needle; after the rotating indicator disk 27 is rotated, the indicator needle is used to indicate the scale after rotation.

[0052] The external connector 3 is rotatably connected to a connecting nut 44; the connecting nut 44 is threadedly connected to a linear stroke shut-off valve; the lower end of the output shaft 4 has a triangular cross-section; the intermediate housing 6 has a triangular through hole 45 that allows the lower end of the output shaft 4 to pass through and limits the position of the output shaft 4; the lower end of the output shaft 4 is opposite to the valve stem of the linear stroke shut-off valve.

[0053] The triangular through hole 45 is surrounded by several fan-shaped holes 46; the external connector 3 includes a hollow body tube 47; one end of the body tube 47 is provided with a buckle plate 48, and the other end is provided with a limiting ring 49; the fan-shaped holes 46 cooperate with two buckle plates 48, the buckle plates 48 are arc-shaped, and the ends are provided with barbs 50; the external connector 3 also includes a snap ring 56 disposed between the two buckle plates 48.

[0054] The limiting ring 49 axially limits the connecting nut 44; the linear stroke shut-off valve is provided with an external thread; the connecting thread is provided with a limiting inner ring 51 that mates with the limiting ring 49, and the limiting inner ring and the limiting ring 49 mutually limit each other; the connecting nut 44 is threadedly connected to the external thread on the linear stroke shut-off valve, so that the lower end of the output shaft 4 is opposite to the valve stem of the linear stroke shut-off valve.

[0055] With the above structural configuration, the actuator has both manual and electric operation methods. The external connector 3 is used to connect the linear stop valve. The upper housing 1 and the lower housing 2 are connected by a snap-fit ​​mechanism, which is existing technology. For reference, other actuator patents of the same applicant can be used to drive the output shaft 4 to move. The output shaft 4 moves downward, thereby pushing the valve stem of the linear stop valve to move and realizing the opening of the linear stop valve. When it is necessary to close, the output shaft 4 moves upward, and the valve stem is reset under the action of the spring force of the inner arm of the linear stop valve, and the valve core closes, realizing the closing of the linear stop valve. The manual and electric drives are not directly connected to the output shaft 4, but are connected through the output gear 11.

[0056] With the above structural setup, the intermediate component is used to house the electric drive component and install the motor 8. The installation structure of the motor 8 is an existing structure, and other actuator patents of the same applicant of this patent can be referenced. The motor shaft of the motor 8 passes through the intermediate housing 6 and is inserted into the gear of the motor 8. Through the meshing transmission of the gear of the motor 8 and the transmission gear 10, the stroke and force are changed, and the rotation of the output gear 11 is changed, driving the output shaft 4 to move up and down.

[0057] With the above structural arrangement, there are several transmission gears 10, one output gear 11, and one motor gear 8. The structure of the output gear 11 is such that it can cooperate with the output shaft 4. The output shaft 4 is located inside the hollow part of the gear post 12 of the output gear 11. The output shaft 4 can be axially displaced relative to the gear post 12, but cannot be axially rotated relative to the gear post 12. The gear post 12 can be rotated by the gear disk 13, and the connection position of the external thread and the internal thread changes, so as to realize the axial displacement of the output shaft 4 relative to the gear post 12.

[0058] By replacing the spring and the ball bearing 17 with the above-mentioned structure, elastic contact with the output shaft 4 below can be achieved. The screw 54 is set as an internal hexagon screw, and the fixing point 18 can be connected to the intermediate plate 7 to prevent the output gear 11 from rotating and to limit its movement. The annular spring 55 can fix the output gear 11 under the reaction force when the output shaft 4 pushes the valve stem. An annular washer 57 is provided between the annular spring 55 and the intermediate plate 7. The annular spring 55 and the annular washer 57 abut against each other. While providing force, the annular washer 57 can reduce friction. An annular groove is provided on the lower side of the intermediate plate 7 to limit the annular washer 57. The annular washer 57 is located in the annular groove. When the fixing point 18 is inserted into the intermediate plate 7, it is inserted into the insertion gap between the intermediate plate 7 and the gear column 12 and the intermediate plate 7.

[0059] With the above structural configuration, the stroke gear 21 is used to achieve stroke control, thereby controlling the axial movement distance of the output shaft 4. When the motor 8 shaft drives the motor 8 gear to rotate, the rotation of the motor 8 gear drives the drive gear to rotate, and the rotation of the drive gear drives the output gear 11 to rotate. The rotation of the output gear 11 controls the forward or backward extension of the output shaft 4. At the same time, the rotation of the output gear 11 also drives the stroke gear 21 to rotate. The rotation of the stroke gear 21 contacts the micro switch 23, thereby controlling the rotation of the motor 8, and thus controlling the axial movement distance of the output shaft 4. A potentiometer 25 is installed on the upper end of the stroke gear shaft 22, which passes through the circuit board 19.

[0060] With the above-described structure, the manual component can rotate the output gear 11. By manually rotating the manual knob 26, the output gear 11 can be rotated. The rotating indicator 27 is used to indicate the angle of rotation, thereby indirectly showing whether the axial movement distance of the output shaft 4 is appropriate.

[0061] With the above structural arrangement, the lower end of the connecting post 30 is inserted and meshed with the second external gear ring 15. The lower end of the connecting post 30 is provided with an insertion hole 36. The second external gear ring 15 of the gear post 12 presents a flower shape with multiple arc-shaped protrusions, thereby realizing the insertion. When the connecting post 30 rotates, it can drive the gear post 12 to rotate, thereby driving the output shaft 4 to rotate, thus realizing the manual effect. The structure of the insertion post 32 on the connecting post 30 is to cooperate with the manual knob 26.

[0062] With the above structural design, when the manual knob 26 is not subjected to external force, the support spring 37 can provide support. The first internal gear ring 35 and the third external gear ring 31 do not cooperate with each other. When rotation is required, press the manual knob 26 down, and the first internal gear ring 35 and the third external gear ring 31 will cooperate. Then rotate the manual knob 26. Because the first internal gear ring 35 and the third external gear ring 31 are in cooperation, the manual knob 26 drives the connecting column 30 to rotate.

[0063] With the above-described structure, the rotating indicator 27 is driven to rotate by the intermediate gear 40. The rotating indicator 27 is located in the circular groove 28 of the upper housing 1. Because the intermediate gear 40 is engaged with the second internal gear ring 39, the rotating indicator 27 will not disengage from the circular groove 28.

[0064] With the above structural design, the sealing rubber ring 43 is used for sealing.

[0065] With the above structural setup, the scale is used to display how many degrees the rotation has been, and the end of the scale represents the maximum stroke, the maximum distance the output shaft 4 extends forward, thus indicating the stroke.

[0066] With the above structural design, the linear stop valve is an existing technology, including a valve body, a valve stem, and a valve core. The valve core is connected to the valve stem, and the movement of the valve stem drives the movement of the valve core, thereby realizing the valve's conduction.

[0067] With the above structural design, the barb 50 has a bevel, which makes it easy for the buckle plate 48 to be inserted into the fan-shaped hole 46. The barb 50 can prevent it from being pulled out. The snap ring 56 is set between the two buckle plates 48. When the buckle plate 48 is set in the fan-shaped hole 46, the snap ring 56 cooperates with the buckle plate 48, which has the function of preventing pull-out and detachment.

[0068] In summary, the present invention has the following beneficial effects: the entire actuator is assembled without screws, the connection is firm, and it can switch between manual and electric operation. Whether operated manually or electrically, the indicator dial 27 can be rotated to indicate the stroke, which is convenient for practical use. The structure of the manual knob 26 can prevent accidental touch. It can only be driven when it is pressed down and rotated. The manual and electric modes of the actuator can realize the conduction of the linear stop valve. A new actuator is proposed for performing operation on the linear stop valve.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A manual electric actuator, comprising a housing and a drive element disposed within the housing, characterized in that: The driving element includes an electric drive unit disposed inside the housing and a manual drive unit disposed outside the housing; the driving element also includes an output shaft (4) that passes through an external connector (3) and is connected to an external valve body; the electric drive unit includes a motor (8) disposed outside the intermediate housing (6); the motor (8) shaft of the motor (8) passes through the intermediate housing (6) and is connected to a gear assembly in the receiving groove (5); the gear assembly drives the output shaft (4) to move up and down; the gear assembly includes several transmission gears (10) and an output gear (11); the output gear (11) includes a gear post (12) and a gear disk (13) disposed outside the gear post (12); a first gear is disposed on the gear post (12) above the gear disk (13). An external gear ring (14) and a second external gear ring (15); the gear column (12) is hollow; the gear column (12) has an internal thread; the output shaft (4) has an external thread at its upper end, which is threaded to the internal thread of the gear column (12); a screw (54) is threaded to the upper end of the gear column (12); a retaining spring (16) is provided below the screw (54); a retaining ball (17) is provided below the retaining spring (16); four fixing points (18) are provided between the gear disk (13) and the gear column (12); an annular spring (55) is installed on the side of the gear disk (13) where the fixing points (18) are located; the annular spring (55) is flared and its upper edge points downwards. The outer bend; an intermediate component is fixedly installed inside the housing; the intermediate component includes an intermediate housing (6) with a receiving groove (5) and an intermediate plate (7) that covers the receiving groove (5); the intermediate housing (6) is installed inside the lower housing (2); an annular recessed groove is provided on the lower side of the intermediate plate (7); an annular gasket (57) is provided in the annular recessed groove; the annular spring (55) elastically abuts against the lower side of the annular gasket (57), and when the output gear (11) rotates, it drives the annular spring (55) to rotate; the output shaft (4) is threadedly connected to the output gear (11) and moves up and down when the output gear (11) rotates; the output shaft (4) abuts against the valve stem, and the valve stem pushes the output shaft (4) to move upward, thereby pushing The output gear (11) moves upward; the annular spring (55) is squeezed and deformed, exerting a force to push the output gear (11) to move in the direction of the straight-stroke shut-off valve stem; the intermediate plate (7) is provided with a first annular notch (60); during the upward movement of the output gear (11), the fixed point (18) is located in the first annular notch (60); the end face of the gear column (12) abuts against the stroke gear (21), pushing the stroke gear (21) to move up and down; the side of the stroke gear (21) is provided with an annular protrusion; the annular protrusion is opposite to the micro switch (23), and when the output gear (11) moves upward and pushes the stroke gear (21) to move, the annular protrusion contacts and controls the switching state of the micro switch (23).

2. The manual electric actuator according to claim 1, characterized in that: The housing includes an upper housing (1) and a lower housing (2) that are fastened together; the manual component is located outside the upper housing (1); an external connector (3) is also provided on the lower housing (2); the external connector (3) passes through the lower housing (2) and is fastened to the intermediate component.

3. The manual electric actuator according to claim 2, characterized in that: A circuit board (19) is provided above the intermediate plate (7); the circuit board (19) is connected to the intermediate plate (7) through several fixed posts (20); the stroke gear (21) is provided between the intermediate plate (7) and the circuit board (19); the stroke gear (21) meshes with the first external gear ring (14); the output gear (11) rotates to drive the stroke gear (21) to rotate.

4. The manual electric actuator according to claim 3, characterized in that: The stroke gear (21) has a stroke gear (21) shaft at both ends; the lower end of the stroke gear (21) shaft is rotatably connected to the intermediate plate (7), and the upper end passes through the circuit board (19) and is rotatably connected to the inner wall of the upper housing (1); the micro switch (23) is located on the lower surface of the circuit board (19), and there are two of them; the micro switch (23) is opposite to the annular protrusion; the circuit board (19) is provided with a potentiometer (25) for calculating the angular stroke.

5. The manual electric actuator according to claim 4, characterized in that: An intermediate spring (58) is provided between the intermediate plate (7) and the circuit board (19); a fulcrum (59) for maintaining the balance of the stroke gear (21) is also provided on the intermediate plate (7); the intermediate spring (58) is sleeved on the shaft of the stroke gear (21).

6. The manual electric actuator according to claim 5, characterized in that: The upper end of the output shaft (4) is provided with a gap between it and the gear column (12); the abutting ball (17) elastically abuts against the upper end of the output shaft (4) to prevent the output shaft (4) from getting stuck with the gear column (12) after it is rotated and tightened.

7. The manual electric actuator according to claim 6, characterized in that: The manual component includes a manual knob (26) and a rotating indicator (27) disposed around the manual knob (26); the upper housing (1) is provided with a circular groove (28) that mates with the rotating indicator (27); a circular hole (29) is provided in the center of the circular groove (28); the manual knob (26) is connected to a connecting post (30); the connecting post (30) passes through the circular hole (29) and is connected to a gear post (12); the connecting post (30) is connected to the rotating indicator (27).

8. The manual electric actuator according to claim 7, characterized in that: The lower end of the connecting post (30) is engaged with the second external gear ring (15); the upper end of the connecting post (30) is provided with a third external gear ring (31); a plug-in post (32) is provided above the third external gear ring (31); a first through hole and a second through hole are provided inside the plug-in post (32); the diameter of the first through hole is smaller than the diameter of the second through hole, and the first through hole is located below the second through hole; the manual knob (26) includes a plug-in tube (33) that cooperates with the plug-in post (32); a plug-in rod (34) is provided inside the plug-in tube (33); the plug-in rod (34) is inserted into the plug-in post (32); a first internal gear ring (35) is provided inside the plug-in tube (33); the diameter of the plug-in rod (34) is adapted to the diameter of the first through hole.

9. The manual electric actuator according to claim 8, characterized in that: A support spring (37) is provided in the second through hole; the plug rod (34) is provided in the support spring (37); the first internal gear ring (35) is adapted to the third external gear ring (31), and under the support force of the support spring (37), the first internal gear ring (35) and the third external gear ring (31) are disengaged; the rotating indicator disk (27) is set as annular; the rotating indicator disk (27) limits the edge of the manual knob (26) to prevent the manual knob (26) from disengaging from the rotating indicator disk (27) under the force of the support spring (37).

10. The manual electric actuator according to claim 9, characterized in that: The rotating indicator disk (27) includes a limiting ring (38) and a second internal gear ring (39) disposed below the limiting ring (38); the second internal gear ring (39) and the third external gear ring (31) are connected by an intermediate gear (40); an intermediate column (41) is disposed in the circular groove (28); the intermediate column (41) is inserted into the intermediate gear (40); the intermediate gear (40) meshes with the lower end of the third external gear ring (31).

11. The manual electric actuator according to claim 10, characterized in that: An annular disk (42) is provided between the lower end of the connecting post (30) and the third external gear ring (31); a sealing rubber ring (43) is provided between the annular disk (42) and the edge of the circular hole (29); the sealing rubber ring (43) seals the gap between the edge of the circular hole (29) and the connecting post (30).

12. The manual electric actuator according to claim 11, characterized in that: The upper shell (1) surface of the edge of the circular groove (28) is provided with a scale; the rotating indicator disk (27) is provided with an indicator needle; after the rotating indicator disk (27) is rotated, the indicator needle is used to indicate the scale after rotation.

13. The manual electric actuator according to claim 2 or 12, characterized in that: The external connector (3) is rotatably connected to a connecting nut (44); the connecting nut (44) is threadedly connected to a straight-stroke shut-off valve; the lower end of the output shaft (4) is configured with a triangular structure; the intermediate housing (6) is provided with a triangular through hole (45) that facilitates the lower end of the output shaft (4) to pass through and limits the output shaft (4); the lower end of the output shaft (4) is opposite to the valve stem of the straight-stroke shut-off valve.

14. The manual electric actuator according to claim 13, characterized in that: The triangular through hole (45) is surrounded by several fan-shaped holes (46); the external connector (3) includes a hollow body tube (47); one end of the body tube (47) is provided with a buckle plate (48), and the other end is provided with a limiting ring (49); the fan-shaped hole (46) cooperates with two buckle plates (48), the buckle plate (48) is set in an arc shape, and the end is provided with a barb (50); the external connector (3) also includes a snap ring (56) provided between the two buckle plates (48).

15. The manual electric actuator according to claim 14, characterized in that: The limiting ring (49) axially limits the connecting nut (44); the straight-stroke shut-off valve is provided with an external thread; the connecting thread is provided with a limiting inner ring (51) that cooperates with the limiting ring (49), and the limiting inner ring and the limiting ring (49) limit each other; the connecting nut (44) is threadedly connected to the external thread on the straight-stroke shut-off valve, so that the lower end of the output shaft (4) is opposite to the valve stem of the straight-stroke shut-off valve.

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