Rotary bidirectional adjustable valve actuator

Abstract

The utility model discloses a rotary type two-way adjustable valve actuator which comprises a shell, an installation block is rotationally connected to the inner wall of the bottom of the shell, a positioning groove is formed in the bottom end of the installation block, a reset mechanism is arranged in the installation block and comprises a sliding groove, the sliding groove is formed in the inner wall of the top of the shell, and the positioning groove is formed in the inner wall of the top of the shell. The inner wall of the sliding groove is slidably connected with a sliding rod, the top end of the sliding rod is elastically connected with the inner wall of the sliding groove through a first spring, the bottom end of the sliding rod is fixedly connected with a control plate, and the outer wall of the control plate is fixedly connected with a control ball. According to the automatic zero calibration device, through the arrangement of the reset mechanism, after equipment leaves the valve, the control panel can automatically reset under the elastic force action of the first spring, the control ball enters the moving channel firstly and then enters the reset sliding channel after reset, and therefore the installation block can rotate to the initial position, and the automatic zero calibration effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of valve control, in particular to a rotary bidirectional adjustable valve actuator. Background Art

[0002] The rotary bidirectional adjustable valve actuator is an actuator that realizes bidirectional adjustment of the valve through rotation. It can accurately control the opening and closing degree of the valve to meet the diverse control needs in industrial automation and fluid control systems.

[0003] At present, rotary bidirectional adjustable valve actuators are widely used. When used in, for example, the oil and gas industry, they are easily exposed to high temperature, high pressure or corrosive environments, so they need to be regularly maintained and inspected to ensure that they are always in the best working condition.

[0004] During the current disassembly of a rotary two-way adjustable valve actuator, workers often disassemble the actuator with the main valve closed in order to ensure that the equipment does not malfunction and cause product leakage during the valve disassembly process. Therefore, during disassembly and installation, workers are likely to forget to zero the actuator when reinstalling it. As a result, when the inspection is completed and the actuator is used again, there is a possibility that the direction indicated by the pointer will be incorrect. Therefore, a rotary two-way adjustable valve actuator is proposed to solve the above problem. Summary of the Invention

[0005] In order to remedy the above deficiencies, the present invention provides a rotary bidirectional adjustable valve actuator, which aims to improve the problem in the prior art that it is easy to forget to calibrate the zero value before installing the actuator, resulting in errors.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rotary two-way adjustable valve actuator, including a shell, the bottom inner wall of the shell is rotatably connected to a mounting block, the bottom end of the mounting block is provided with a positioning groove, and a reset mechanism is provided inside the mounting block, and the reset mechanism includes a slide groove, the slide groove is provided on the top inner wall of the shell, the inner wall of the slide groove is slidably connected to a slide rod, the top of the slide rod is elastically connected to the inner wall of the slide groove by a spring, the bottom end of the slide rod is fixedly connected to a control plate, the outer wall of the control plate is fixedly connected to a control ball, the bottom end of the control plate is rotatably connected to a push block, the outer wall of the push block is slidably connected to the inner wall of the positioning groove, the top of the mounting block is fixedly connected to a rotating tube, and a control component is provided on the outside of the rotating tube.

[0007] Preferably, a positioning bin is provided on the inner wall of the mounting block above the positioning groove, a reset slide is provided on the inner wall of the positioning bin, a rotating slide is provided on the inner wall of the positioning bin at the horizontal position where the uppermost end of the reset slide is located, and a moving path is provided on the inner wall of the positioning bin between the reset slide and the rotating slide.

[0008] Preferably, the control component includes bevel gear 1, the inner wall of which passes through and is fixedly connected to the outer wall of the rotating tube, the inner wall of the shell is rotatably connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to bevel gear 2, the inner wall of the rotating rod is slidably connected to a control rod, and the outer wall of the control rod is fixedly connected to a push block.

[0009] Preferably, the control component also includes a worm gear, the inner wall of the worm gear is fixedly connected to the outer wall of the rotating tube, the inner wall of the shell is provided with a movable groove, the inner wall of the movable groove is slidably connected to a slider, the inner wall of the slider passes through and is rotatably connected to a worm, and the outer wall of the slider is elastically connected to the inner wall of the movable groove by spring 2.

[0010] Preferably, the reset slide is in a spiral shape, and the number of spiral turns of the reset slide is a quarter of a turn.

[0011] Preferably, the rotating slide is a horizontal groove, and the shape of the rotating slide is an arc.

[0012] Preferably, the moving track is vertical, the number of the moving tracks is set to be multiple, and the upper end of the moving track is connected to the rotating slide, and the lower end of the moving track is connected to the resetting slide.

[0013] Preferably, the slider is in the shape of a cuboid, and a cut corner is provided on the right side of the front end of the slider.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, through the combined action of the slide groove, slide rod, spring 1, control plate, control ball, push block, positioning bin, reset slide, rotating slide, and moving path, after the device leaves the valve, the control plate can automatically reset under the elastic force of spring 1, and after resetting, the control ball first enters the moving path and then enters the reset slide, so that the mounting block can rotate to the initial position, achieving the effect of automatic zeroing.

[0016] 2. In the utility model, through the arrangement of bevel gear 1, rotating rod, bevel gear 2, control rod, push block, movable groove, slider, worm, spring 2 and worm gear, it is ensured that when the closing degree of the valve needs to be adjusted, it can be rotated quickly first and then corrected slowly, thereby ensuring that the valve can be better adjusted to the optimal working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after the overall structure and the valve are fixed;

[0019] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the present invention;

[0020] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional breakdown of the overall structure of the present invention;

[0021] Figure 5 This is a schematic cross-sectional view of the three-dimensional structure of the mounting block in the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional cross-section of the housing and its internal structure in the present invention;

[0023] Figure 7 It is a three-dimensional structural diagram of a part of the structure of the reset mechanism in the utility model;

[0024] Figure 8 For this utility model Figure 5 Schematic diagram of the enlarged three-dimensional structure of part A.

[0025] Legend:

[0026] 1. Housing; 2. Mounting block; 3. Positioning slot; 4. Reset mechanism; 5. Rotating tube; 6. Control assembly; 41. Slide slot; 42. Slide rod; 43. Spring 1; 44. Control board; 45. Control ball; 46. Push block; 47. Positioning bin; 48. Reset slideway; 49. Rotating slideway; 410. Moving track; 61. Bevel gear 1; 62. Rotating rod; 63. Bevel gear 2; 64. Control rod; 65. Push block; 66. Moving slot; 67. Slider; 68. Worm; 69. Spring 2; 610. Worm gear. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] Reference Figure 1 - Figure 3The utility model provides an embodiment: a rotary bidirectional adjustable valve actuator, comprising a shell 1, a scale line is provided on the top of the shell 1, and the inner wall of the shell 1 in the area where the scale line is located is set to be colorless and transparent, and a mounting block 2 is rotatably connected to the bottom inner wall of the shell 1, and the mounting block 2 is used to fix the valve stem of the valve and drive it to rotate, and the maximum rotation angle of the valve stem is ninety degrees. A positioning groove 3 is provided at the bottom end of the mounting block 2, and the positioning groove 3 is a rectangular groove, which is fixed to the square protrusion provided on the top of the valve stem of the valve through the rectangular groove, so that the mounting block 2 can drive the valve stem of the valve to rotate during the rotation process, thereby achieving the effect of rotating the valve disc to adjust the opening and closing of the valve and the degree of opening and closing.

[0029] Reference Figure 3 - Figure 5 , a reset mechanism 4 is provided inside the mounting block 2, and the reset mechanism 4 includes a slide groove 41, the slide groove 41 is opened on the top inner wall of the housing 1, and the inner wall of the slide groove 41 is slidably connected to a slide rod 42, and the shape of the slide rod 42 is cylindrical, and the top of the slide rod 42 is elastically connected to the inner wall of the slide groove 41 by a spring 43, one end of the spring 43 is fixedly connected to the top of the slide rod 42, and the other end of the spring 43 is fixedly connected to the inner wall of the slide groove 41, and the bottom end of the slide rod 42 is fixedly connected to a control plate 44, and the diameter of the control plate 44 is larger than the diameter of the slide rod 42, and the outer wall of the control plate 44 is fixedly connected to a control ball 45, and the shape of the control ball 45 is The bottom end of the control plate 44 is rotatably connected to a pushing block 46. By means of the rotating connection, the control plate 44 and the pushing block 46 can rotate relative to each other, thereby ensuring that when the pushing block 46 rotates with the mounting block 2, the control plate 44 will not be driven to rotate. The shape of the pushing block 46 is a shape formed by connecting a cylinder above and a rectangular parallelepiped below, and the diameter of the cylindrical area of ​​the pushing block 46 is consistent with the diameter of the control plate 44. The top view shape of the rectangular parallelepiped area of ​​the pushing block 46 is consistent with the shape of the inner wall of the positioning groove 3. The outer wall of the pushing block 46 is slidably connected to the inner wall of the positioning groove 3, and the sliding direction of the pushing block 46 is up and down.

[0030] Reference Figure 4 、 Figure 5 and Figure 7, the inner wall of the mounting block 2 above the positioning groove 3 is provided with a positioning bin 47, the positioning bin 47 is a cylindrical groove, and the inner diameter of the positioning bin 47 is consistent with the outer diameter of the control board 44, the inner wall of the positioning bin 47 is provided with a reset slide 48, the shape of the reset slide 48 is spiral, and the number of spiral turns of the reset slide 48 is a quarter turn, the inner wall of the positioning bin 47 at the horizontal position of the upper end of the reset slide 48 is provided with a rotating slide 49, the rotating slide 49 is a horizontal groove, and the shape of the rotating slide 49 is an arc. Through the horizontal setting, it is ensured that when the control ball 45 moves to the plane position where the rotating slide 49 is located, the control ball 45 is rotated due to the control The ball 45 can move in the rotating slide 49, so that the control panel 44 can rotate relative to the mounting block 2 at this time. The inner wall of the positioning bin 47 between the reset slide 48 and the rotating slide 49 is provided with a moving path 410. The moving path 410 is vertical, and the number of moving paths 410 is set to multiple. The upper end of the moving path 410 is connected to the rotating slide 49, and the lower end of the moving path 410 is connected to the reset slide 48. Through the setting of the moving path 410 and the rotating slide 49, it is ensured that when the control ball 45 moves downward at different horizontal positions, it can enter the interior of the reset slide 48 after moving downward through different moving paths 410.

[0031] Reference Figure 3 、 Figure 6 and Figure 8 The top of the mounting block 2 is fixedly connected to a rotating tube 5. The rotating tube 5 is a tubular shape with both inner and outer walls in a top view being circular. The top of the rotating tube 5 is provided with an annular protrusion with a diameter larger than that of the bottom, and an indicator arrow is provided on the top of the protrusion. A control component 6 is provided on the outside of the rotating tube 5. The control component 6 includes a bevel gear 61. The inner wall of the bevel gear 61 passes through and is fixedly connected to the outer wall of the rotating tube 5. The inner wall of the shell 1 is rotatably connected to a rotating rod 62. The outer wall of the rotating rod 62 is fixedly connected to a bevel gear 2 63. The bevel gear 1 61 is meshed with the bevel gear 2 63. The inner wall of the rotating rod 62 is slidably connected to a control rod 64. The outer wall of the control rod 64 is fixedly connected to a push block 65.

[0032] Reference Figure 4 、 Figure 6 and Figure 8The control component 6 also includes a worm gear 610. The inner wall of the worm gear 610 is fixedly connected to the outer wall of the rotating tube 5. A movable groove 66 is provided on the inner wall of the housing 1. A slider 67 is slidably connected to the inner wall of the movable groove 66. The slider 67 is in the shape of a rectangular parallelepiped, and a cut angle is provided on the right side of the front end of the slider 67. The setting of the cut angle ensures that when the cut angle is applied to the front and rear directions, it can generate left and right movement. A worm 68 is passed through and rotatably connected to the inner wall of the slider 67. The middle diameter of the worm 68 is smaller than the end diameter, and the outer wall curvature of the worm 68 matches the outer wall curvature of the worm wheel 610. The outer wall of the slider 67 is elastically connected to the inner wall of the movable groove 66 by a spring 2 69. One end of the spring 2 69 is fixedly connected to the outer wall of the slider 67, and the other end of the spring 2 69 is fixedly connected to the inner wall of the movable groove 66.

[0033] Working principle: During use, when the staff disassembles the equipment, the square protrusion at the top of the valve leaves the positioning groove 3, so the bottom end of the push block 46 is not subjected to force. Therefore, the slide rod 42 moves downward under the elastic force of the spring 43, and drives the slide rod 42 and the control plate 44 to move downward.

[0034] When the control plate 44 moves downward, the control plate 44 drives the control ball 45 to move downward. At this time, the control ball 45 leaves the rotating slide 49 and enters the moving track 410 which is in the same vertical plane with it. If the control ball 45 is in a position between the two moving tracks 410 at this time, since the control ball 45 is in the shape of a sphere, its bottom is a spherical surface. Therefore, after being subjected to force, it can move in the direction of the moving track 410 where its center is located in the vertical position.

[0035] When the control ball 45 moves downward to a position passing through the moving path 410, the control ball 45 enters the reset slide 48. At this time, when the control ball 45 moves downward again, it pushes the inner wall of the reset slide 48, so that in the process of continuing to move downward, the reset slide 48 is forced to rotate from the groove position at the same height as the reset slide 48 to the area at the same horizontal position as the reset slide 48, thereby driving the mounting block 2 to rotate.

[0036] Therefore, it can be ensured that when the equipment is disassembled, it can be automatically zeroed.

[0037] After the equipment is installed, the protrusion at the top of the valve enters the positioning groove 3, pushing the pushing block 46, thereby causing the pushing block 46 to drive the control plate 44 to move upward, and causing the control plate 44 to drive the control ball 45 to move to the inside of the rotating slide 49. Since the rotating slide 49 is horizontal, the control ball 45 is inside the rotating slide 49 at this time, so it will not hinder the relative rotation of the mounting block 2 and the control plate 44.

[0038] During the use of the equipment, when the staff needs to adjust the opening and closing degree of the valve, the staff first pushes the control rod 64, so that the control rod 64 drives the push block 65 to move backward, so that the push block 65 squeezes the inclined surface of the slider 67, causing the slider 67 to move to the left. When the slider 67 moves to the left, the worm wheel 610 is separated from the worm 68, so that the rotating tube 5 can rotate normally, and the worm 68 will not be unable to rotate due to the worm wheel 610 being unable to drive the worm 68 to rotate in an unstressed state.

[0039] At the same time, the staff rotates the control rod 64. Since the control rod 64 and the rotating rod 62 are in sliding connection, the control rod 64 drives the rotating rod 62 to rotate when it rotates, thereby rotating the bevel gear 2 63 and driving the bevel gear 1 61 to rotate, thereby rotating the rotating tube 5.

[0040] When the arrow on the upper end of the rotating tube 5 points to a value close to the required value, the staff releases the control lever 64. At this time, the slider 67 is reset under the elastic force of the spring 2 69, so that the worm 68 moves to a position close to the worm wheel 610.

[0041] At this time, the staff rotates the worm 68. Since the worm 68 can only drive the worm wheel 610 to rotate one tooth position when it rotates one circle, the worm wheel 610 rotates slowly at this time. Therefore, the opening and closing degree of the valve can be slowly adjusted at this time until the pointer just points to the required value. At the same time, when the adjustment is completed, since the worm wheel 610 cannot drive the worm 68 to rotate, even if the valve disc is pushed during the flow of liquid, it is not easy to change the rotation angle of the valve disc.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary bidirectional adjustable valve actuator, comprising a housing (1), characterized in that: The bottom inner wall of the shell (1) is rotatably connected to a mounting block (2), and a positioning groove (3) is provided at the bottom end of the mounting block (2). A reset mechanism (4) is provided inside the mounting block (2), and the reset mechanism (4) includes a slide groove (41), and the slide groove (41) is provided on the top inner wall of the shell (1). The inner wall of the slide groove (41) is slidably connected to a slide rod (42), and the top end of the slide rod (42) is elastically connected to the inner wall of the slide groove (41) through a spring (43). The bottom end of the slide rod (42) is fixedly connected to a control plate (44), and the outer wall of the control plate (44) is fixedly connected to a control ball (45). The bottom end of the control plate (44) is rotatably connected to a push block (46), and the outer wall of the push block (46) is slidably connected to the inner wall of the positioning groove (3). The top end of the mounting block (2) is fixedly connected to a rotating tube (5), and the outside of the rotating tube (5) is provided with a control component (6).

2. A rotary bidirectional adjustable valve actuator according to claim 1, characterized in that: The inner wall of the mounting block (2) above the positioning groove (3) is provided with a positioning bin (47), the inner wall of the positioning bin (47) is provided with a reset slideway (48), the inner wall of the positioning bin (47) at the horizontal position where the uppermost end of the reset slideway (48) is located is provided with a rotating slideway (49), and the inner wall of the positioning bin (47) between the reset slideway (48) and the rotating slideway (49) is provided with a moving path (410).

3. The rotary bidirectional adjustable valve actuator according to claim 1, characterized in that: The control assembly (6) includes a bevel gear (61), the inner wall of the bevel gear (61) penetrates and is fixedly connected to the outer wall of the rotating tube (5), the inner wall of the housing (1) is rotatably connected to a rotating rod (62), the outer wall of the rotating rod (62) is fixedly connected to a bevel gear (63), the inner wall of the rotating rod (62) is slidably connected to a control rod (64), and the outer wall of the control rod (64) is fixedly connected to a push block (65).

4. A rotary bidirectional adjustable valve actuator according to claim 3, characterized in that: The control assembly (6) further includes a worm gear (610), the inner wall of which is fixedly connected to the outer wall of the rotating tube (5), the inner wall of the housing (1) is provided with a movable groove (66), the inner wall of the movable groove (66) is slidably connected to a slider (67), the inner wall of the slider (67) is penetrated by and rotatably connected to a worm (68), and the outer wall of the slider (67) is elastically connected to the inner wall of the movable groove (66) via a second spring (69).

5. The rotary bidirectional adjustable valve actuator according to claim 2, characterized in that: The return slideway (48) is in a spiral shape, and the number of spiral turns of the return slideway (48) is a quarter of a turn.

6. The rotary bidirectional adjustable valve actuator according to claim 2, characterized in that: The rotating slideway (49) is a horizontal groove, and the shape of the rotating slideway (49) is an arc.

7. The rotary bidirectional adjustable valve actuator according to claim 2, characterized in that: The moving track (410) is vertical, the number of the moving tracks (410) is set to be multiple, and the upper end of the moving track (410) is connected to the rotating slide (49), and the lower end of the moving track (410) is connected to the reset slide (48).

8. The rotary bidirectional adjustable valve actuator according to claim 4, characterized in that: The slider (67) is in the shape of a cuboid, and a cut corner is provided on the right side of the front end of the slider (67).

Images