Control valve integrated type electro-hydraulic actuating mechanism

Abstract

The utility model discloses a control valve integrated type electro-hydraulic actuating mechanism, which belongs to the technical field of control valves and is characterized in that the surface of an electro-hydraulic actuating mechanism body is provided with a groove and a passage groove, the bottom of the passage groove is fixedly communicated with an oil pipe, the inner wall of the passage groove is slidably connected with a piston, and the center of the surface of the piston is fixedly connected with a connecting rod; according to the control valve integrated type electro-hydraulic executing mechanism, through the arrangement of a limiting block, a sliding groove and a limiting groove, the rotating position of an adjusting pipe can be limited, and therefore the control valve integrated type electro-hydraulic executing mechanism has the advantages that the control valve integrated type electro-hydraulic executing mechanism is convenient to operate; and through the arrangement of the mounting groove, the countersunk head groove, the telescopic column and the rotating plate, the piston can rapidly extend downwards to reset when the pressure in the hydraulic oil pipe does not need to be reduced, and therefore the working stability of the piston is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, and more specifically, to an integrated electro-hydraulic actuator for control valves. Background Technology

[0002] An integrated electro-hydraulic actuator is a device that integrates a control valve and an electro-hydraulic actuator into one unit.

[0003] Currently, the pistons in common integrated electro-hydraulic actuators for control valves can retract to reduce the pressure in the hydraulic lines when not in operation. However, during the piston's retraction and adjustment, its rotational stability is insufficient, and it cannot quickly reset when operation is required and pressure reduction in the hydraulic lines is not necessary. For example, the integrated electro-hydraulic actuator for control valves disclosed in publication number CN118361422A includes a pressure-reducing component comprising a guide arc plate, an iron block, an intermediate component, a path conversion disc, ball bearings, and a slide rod. The end of the guide arc plate is fixedly connected to a square magnet. Multiple guide arc plates are arranged in a ring at equal angles. An iron block is slidably connected to the inner arc surface of the guide arc plate. An intermediate component is provided at the bottom of the iron block. The bottom of the intermediate component is fixedly connected to the path conversion disc. The inner ring of the path conversion disc is rotatably connected to the ball bearings, and the inner ring of the path conversion disc is slidably connected to the slide rod.

[0004] As can be seen from the above-disclosed scheme, when the air piston moves upward along the passage groove to reduce the pressure in the hydraulic oil pipe, the positioning sleeve is rotated to make the ball rotate into the long slide groove, thereby allowing the slide rod to slide upward and retract. However, when the positioning sleeve rotates, it may drive the slide rod to rotate, and its rotation angle cannot be accurately controlled, which reduces the accuracy of piston extension and retraction control. At the same time, when the piston moves upward, the slide rod cannot move downward quickly and accurately during use, so that the ball cannot accurately enter the annular slide groove, which may cause the piston to malfunction. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an integrated electro-hydraulic actuator for control valves. This integrated electro-hydraulic actuator, through the setting of a limiting block, a sliding groove, and a limiting slot, can limit the rotational position of the regulating pipe, thereby allowing the limiting block to accurately enter and exit the limiting slot, improving the accuracy of piston extension and retraction control. Furthermore, through the setting of an installation slot, a countersunk slot, a telescopic column, and a rotating plate, the piston can be quickly extended downwards and reset without reducing the pressure in the hydraulic oil pipe, thus ensuring the working stability of the piston.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] An integrated electro-hydraulic actuator for control valves includes an electro-hydraulic actuator body. The surface of the actuator body has grooves and passageways. An oil pipe is fixedly connected to the bottom of the passageway. A piston is slidably connected to the inner wall of the passageway. A connecting rod is fixedly connected to the center of the piston's surface. A reset assembly is fixedly installed at one end of the connecting rod, and an adjusting mechanism is slidably connected to the other end of the connecting rod. The adjusting mechanism includes a switching disc with teeth on its surface. This integrated electro-hydraulic actuator for control valves, through the setting of a limiting block, a sliding groove, and a limiting groove, restricts the rotational position of the adjusting pipe, thereby allowing the limiting block to accurately enter and exit the limiting groove, improving the accuracy of piston extension and retraction control. Furthermore, through the setting of an installation groove, a countersunk groove, a telescopic column, and a rotating plate, the piston can quickly extend downwards to reset without reducing the pressure in the hydraulic oil pipe, thus ensuring the working stability of the piston.

[0008] Furthermore, an adjusting tube is fixedly connected to the bottom center of the conversion disc. One end of the adjusting tube has a telescopic hole, and one end of the telescopic hole has symmetrical sliding grooves. One end of each sliding groove is fixedly connected to a limiting groove with opposite rotation directions. The length of the sliding groove is the same as the length of the telescopic hole, which facilitates the retraction of one end of the connecting rod into the telescopic hole. The limiting groove is located at one end of the opening of the telescopic hole and is used to fix the extended position of the connecting rod after rotation.

[0009] Furthermore, the reset assembly includes a mounting groove, one end of which has a countersunk groove. A telescopic column is fixedly installed on the inner wall of the mounting groove. The telescopic column is an electric telescopic rod that can extend to compress the connecting rod, causing the connecting rod to move downward and extend out of the telescopic hole, thereby causing the piston to move downward quickly to reset.

[0010] Furthermore, symmetrical limiting blocks are fixedly connected to the surface of the connecting rod, and an anti-slip sleeve is fixedly fitted onto the surface of the connecting rod. The anti-slip sleeve is polygonal in shape. When the limiting blocks are in the limiting groove, the connecting rod cannot move upward to be stored, thereby ensuring the working stability of the piston.

[0011] Furthermore, a guide sleeve is fixedly connected between the groove and the passage groove. The end face of the guide sleeve has a guide hole, and the inner wall of the guide hole is slidably connected to the surface of the anti-slip sleeve. The guide sleeve and the anti-slip sleeve can prevent the connecting rod from rotating with the adjusting tube.

[0012] Furthermore, one end of the telescopic column is rotatably connected to a rotating plate, and the surface of the rotating plate is movably connected to the inner wall of the countersunk groove.

[0013] Furthermore, the limiting groove is arc-shaped, and the inner wall of the limiting groove is movably connected to the surface of the limiting block. When the adjusting tube rotates, the limiting groove can restrict the rotation position of the limiting block, making it easier for the limiting block to enter and exit the limiting groove.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) This scheme uses limit blocks, slides and limit grooves to limit the rotation position of the regulating tube, thereby allowing the limit blocks to accurately enter and exit the limit grooves, which improves the accuracy of piston extension and retraction control.

[0016] (2) This solution, through the installation groove, countersunk groove, telescopic column and rotating plate, can make the piston quickly extend downward and reset without reducing the pressure in the hydraulic oil pipe, thereby ensuring the working stability of the piston. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the piston and connecting rod installation structure of this utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the mounting slot structure;

[0020] Figure 4 This is a schematic diagram of the adjustment mechanism structure of this utility model;

[0021] Figure 5 for Figure 4 A top view of the chute and limiting groove structure.

[0022] Explanation of the labels in the diagram:

[0023] 1. Electro-hydraulic actuator body; 11. Groove; 12. Passage groove; 13. Oil pipe; 2. Adjustment mechanism; 21. Converter plate; 22. Adjustment pipe; 23. Telescopic hole; 24. Slide groove; 25. Limiting groove; 3. Piston; 31. Connecting rod; 32. Anti-slip sleeve; 33. Mounting groove; 34. Countersunk groove; 35. Limiting block; 36. Telescopic column; 37. Rotating plate; 4. Guide sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1-5An integrated electro-hydraulic actuator for control valves includes an electro-hydraulic actuator body 1. The electro-hydraulic actuator body 1 also includes components such as a toothed plate, a power stage main valve, a pilot stage valve, a power interface, and electromagnetic components. Its composition and working principle are existing technologies and will not be described in detail here. The surface of the electro-hydraulic actuator body 1 has a groove 11 and a passage groove 12. The bottom of the passage groove 12 is fixedly connected to an oil pipe 13, which is a hydraulic pipe. A piston 3 is slidably connected to the inner wall of the passage groove 12. A connecting rod 31 is fixedly connected to the center of the piston 3. A reset component is fixedly installed at one end of the connecting rod 31. The reset component includes a mounting groove 33, which is located at one end of the connecting rod 31. One end of the mounting groove 33 has a countersunk groove 34. A telescopic column 36 is fixedly installed on the inner wall of the mounting groove 33. The telescopic column 36 is an electrically operated telescopic rod that can extend to compress the connecting rod. 31, causing the connecting rod 31 to move downward and extend out of the telescopic hole 23, thereby causing the piston 3 to move downward and reset quickly. One end of the connecting rod 31 is slidably connected to an adjustment mechanism 2, which includes a conversion disk 21. The surface of the conversion disk 21 is provided with teeth. The conversion disk 21 meshes with a toothed plate. The toothed plate is controlled to rotate by a forward and reverse motor, thereby allowing the conversion disk 21 to rotate 90 degrees clockwise and 90 degrees counterclockwise. An adjustment tube 22 is fixedly connected to the bottom center of the conversion disk 21. One end of the adjustment tube 22 has a telescopic hole 23. One end of the telescopic hole 23 has symmetrical sliding grooves 24. One end of the two sliding grooves 24 is fixedly connected to a limiting groove 25 with opposite rotation directions. The length of the sliding groove 24 is the same as the length of the telescopic hole 23, which facilitates the retraction of one end of the connecting rod 31 into the telescopic hole 23. The limiting groove 25 is located at the opening end of the telescopic hole 23 and is used to fix the extended position of the connecting rod 31 after rotation.

[0026] Symmetrical limiting blocks 35 are fixedly connected to the surface of the connecting rod 31, and an anti-slip sleeve 32 is fixedly sleeved on the surface of the connecting rod 31. The anti-slip sleeve 32 is polygonal in shape. When the limiting block 35 is in the limiting groove 25, the connecting rod 31 cannot move upward to be stored, thereby ensuring the working stability of the piston 3. A guide sleeve 4 is fixedly connected between the groove 11 and the passage groove 12. A guide hole is opened on the end face of the guide sleeve 4. The inner wall of the guide hole is slidably connected to the surface of the anti-slip sleeve 32. The guide sleeve 4 and the anti-slip sleeve 32 can prevent the connecting rod 31 from rotating with the adjusting tube 22.

[0027] One end of the telescopic column 36 is rotatably connected to a rotating plate 37. The surface of the rotating plate 37 is movably connected to the inner wall of the countersunk groove 34. The limiting groove 25 is arc-shaped. The inner wall of the limiting groove 25 is movably connected to the surface of the limiting block 35. When the adjusting tube 22 rotates, the limiting groove 25 can restrict the rotation position of the limiting block 35, making it easier for the limiting block 35 to enter and exit the limiting groove 25.

[0028] When the integrated electro-hydraulic actuator of the control valve lacks magnetic force on the electromagnetic component, the hydraulic pressure in the hydraulic line increases. To reduce the pressure in hydraulic oil pipe 13, the motor drives the gear plate to rotate 90 degrees clockwise. The gear plate then drives the converter plate 21 to rotate 90 degrees clockwise, causing the limit block 35 to rotate 90 degrees along the limit groove 25. This allows the limit block 35 to rotate into the slide groove 24. At this time, the piston 3, pushed by the hydraulic oil in oil pipe 13, moves upward along the passage groove 12, causing the anti-slip sleeve 32 to move upward along the guide sleeve 4. Simultaneously, the limit block 35 moves upward along the slide groove 24, causing one end of the connecting rod 31 to retract upward into the telescopic hole 23. One end of the rotating plate 37 and the connecting rod 31 contacts the bottom of the telescopic hole 23, completing the adjustment of the pressure in the hydraulic oil pipe 13. When pressure adjustment is not required, the telescopic column 36 can be controlled to extend upward, so that the connecting rod 31 extends downward out of the telescopic hole 23, thereby causing the limiting block 35 to slide downward along the slide groove 24 to one end of the limiting groove 25. Then, the conversion plate 21 is controlled to rotate counterclockwise by 90 degrees as described above, thereby causing the limiting block 35 to rotate along the limiting groove 25 to the end away from the opening of the slide groove 24, thereby positioning the extension position of the connecting rod 31. At the same time, the telescopic column 36 is controlled to retract and reset. At this time, the piston 3 moves downward and resets, and then it can be used normally.

[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A control valve integrated electro-hydraulic actuator, comprising an electro-hydraulic actuator body (1), wherein the surface of the electro-hydraulic actuator body (1) has a groove (11) and a passage groove (12), and the bottom of the passage groove (12) is fixedly connected to an oil pipe (13), characterized in that: A piston (3) is slidably connected to the inner wall of the passage groove (12). A connecting rod (31) is fixedly connected to the center of the surface of the piston (3). A reset component is fixedly installed at one end of the connecting rod (31). An adjustment mechanism (2) is slidably connected to one end of the connecting rod (31). The adjustment mechanism (2) includes a conversion disk (21). Teeth are provided on the surface of the conversion disk (21).

2. The valve-integrated electro-hydraulic actuator according to claim 1, characterized in that: An adjusting tube (22) is fixedly connected to the bottom center of the conversion disk (21). One end of the adjusting tube (22) has a telescopic hole (23), and one end of the telescopic hole (23) has a symmetrical sliding groove (24). One end of the two sliding grooves (24) is fixedly connected to a limiting groove (25) with opposite rotation directions.

3. The valve-integrated electro-hydraulic actuator according to claim 1, characterized in that: The reset assembly includes a mounting groove (33), one end of which has a countersunk groove (34), and a telescopic column (36) is fixedly installed on the inner wall of the mounting groove (33). The telescopic column (36) is an electric telescopic rod.

4. The valve-integrated electro-hydraulic actuator according to claim 1, characterized in that: The surface of the connecting rod (31) is fixedly connected with symmetrical limiting blocks (35), and the surface of the connecting rod (31) is fixedly fitted with an anti-slip sleeve (32), the anti-slip sleeve (32) being polygonal in shape.

5. The integrated electro-hydraulic actuator for a control valve according to claim 4, characterized in that: A guide sleeve (4) is fixedly connected between the groove (11) and the passage groove (12). The end face of the guide sleeve (4) has a guide hole, and the inner wall of the guide hole is slidably connected to the surface of the anti-slip sleeve (32).

6. The valve-integrated electro-hydraulic actuator according to claim 3, characterized in that: One end of the telescopic column (36) is rotatably connected to a rotating plate (37), and the surface of the rotating plate (37) is movably connected to the inner wall of the countersunk groove (34).

7. The valve-integrated electro-hydraulic actuator according to claim 2, characterized in that: The limiting groove (25) is arc-shaped, and the inner wall of the limiting groove (25) is movably connected to the surface of the limiting block (35).

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