A valve control device

Abstract

The present application relates to valve control technical field, especially a valve control device, including, shell;Rotary is established in the shell main shaft;Established in the shell electric drive assembly;Established in the shell manual drive assembly;Established in the shell push part;Sliding is established in the main shaft outside the plug connector, the push part and the plug connector rotary connection;Established in the push part spring;The elastic force of the spring will push the plug connector close to electric drive assembly, the electric drive assembly and manual drive assembly of the present application do not need additional structure to switch, when needing manual operation, the characteristics of needing to operate rotary handle are used to complete the sliding of the plug connector, the main shaft is switched to and manual drive assembly is connected, after manual operation is completed, the plug connector is close to electric drive assembly by gravity and spring, so that electric drive assembly can control the rotation of the main shaft.

Description

Technical Field

[0001] This invention relates to the field of valve control technology, and in particular to a valve control device. Background Technology

[0002] Valve control devices are widely used in industrial control fields such as power, petroleum, and chemical industries. In thermal power plants, they play a core role in controlling the flow and switching of media in boilers, heating networks, and other systems.

[0003] Currently, many early-built thermal power units in China still use traditional valve control devices, namely on / off type electric actuators. Traditional valve control devices consist of an electric drive structure, a manual operation structure, and a clutch structure. During normal use, the clutch structure maintains a transmission connection with the electric drive structure. When switching to the manual operation structure, a separate switching handle needs to be turned to control the switching of the clutch, so that the clutch and the manual operation structure are connected, and only then can manual operation be performed.

[0004] However, with traditional valve control devices, operators often forget to turn the switching handle after performing manual operation, causing the clutch to remain connected to the manual operation mechanism, making remote operation impossible and requiring a second trip to the site to perform the switching operation.

[0005] Therefore, a valve control device is proposed. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is that: after performing manual operation, the operator of the traditional valve control device may forget to turn the switching handle, causing the clutch to remain connected to the manual operation structure, making it impossible to perform remote operation and requiring a second trip to the site to perform the switching operation.

[0007] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a valve control device, comprising, case; Rotate the main shaft located inside the housing; An electric drive assembly is located within the housing; A manual drive assembly is located within the housing; A pushing part is provided inside the housing; A connector is slidably disposed outside the main shaft, and the pushing part and the connector are rotatably connected; A spring is provided within the actuating part; The spring force will push the connector closer to the electric drive assembly; The manual drive assembly includes an outer rotating rod and an inner rod body slidably disposed within the outer rotating rod, with a rotating handle rotatably disposed on the inner rod body; Rotating the handle will push the pusher upward, and the pusher will pull the connector closer to the end of the outer rotating rod; When the connector approaches the electric drive assembly, the electric drive assembly can control the rotation of the spindle; When the connector approaches the outer rotating rod, the manual drive assembly can control the rotation of the spindle.

[0008] In a preferred embodiment of the valve control device of the present invention: the electric drive assembly includes a worm gear rotatably disposed outside the main shaft, and a drive motor disposed inside the housing, wherein the output shaft of the drive motor is connected to a worm.

[0009] In a preferred embodiment of the valve control device of the present invention: the end face of the worm gear is provided with a first positioning hole; The end of the outer rotating rod is provided with a second positioning hole; The connector is used for plugging into the first positioning hole or the second positioning hole.

[0010] In a preferred embodiment of the valve control device of the present invention: a limiting strip is provided on the outer wall of the main shaft; The connector includes a sliding sleeve slidably disposed outside the limiting strip, a first locking post disposed at the end of the sliding sleeve, and a second locking post disposed at the end of the sliding sleeve away from the first locking post.

[0011] In a preferred embodiment of the valve control device of the present invention: the outer rotating rod is provided with a movable groove, and a pushing ball is rolled in the movable groove; The end of the inner rod is provided with a push block.

[0012] In a preferred embodiment of the valve control device of the present invention: when the inner rod slides out from the outer rotating rod, the push block will push the ball out from the movable groove, and after the push ball is pushed out, it will push the push part to rise.

[0013] In a preferred embodiment of the valve control device of the present invention: a first inclined surface is provided on the outer rotating rod; The pushing part includes a cylindrical body and a second inclined surface provided on the cylindrical body, and the cylindrical body is provided with a snap-fit ​​edge; The snap-fit ​​edge and the outer wall of the sliding sleeve are rotatably connected.

[0014] In a preferred embodiment of the valve control device of the present invention: the outer rotating rod is provided with a contact surface; The second inclined surface has a contraction edge.

[0015] In a preferred embodiment of the valve control device of the present invention: the rotating handle is provided with a connecting part, the connecting part is provided with an eccentric arc groove, and the connecting part is provided with a fixed shaft; The fixed shaft and the outer rotating rod are rotatably connected; One end of the inner rod is provided with a sliding shaft; The sliding shaft and the eccentric arc groove are slidably connected.

[0016] In a preferred embodiment of the valve control device of the present invention: a handle is provided on the rotary handle; When the rotating handle and the outer rotating rod are parallel, the contact surface and the contraction edge abut against each other.

[0017] The beneficial effects of the present invention are as follows: no additional structure is needed to switch between the electric drive component and the manual drive component. When manual operation is required, the sliding of the connector is completed by using the feature of the rotating handle, and the spindle is switched to connect with the manual drive component. After the manual operation is completed, gravity and spring are used to bring the connector close to the electric drive component, so that the electric drive component can control the spindle to rotate. This avoids the inability to remotely control caused by forgetting to rotate the switching handle in traditional equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0019] Figure 1 A schematic diagram of the overall structure of the valve control device is shown.

[0020] Figure 2 A cross-sectional structural diagram of the valve control device is shown.

[0021] Figure 3 A schematic diagram of the main shaft of the valve control device is shown.

[0022] Figure 4 A schematic diagram of the actuator of the valve control device is shown.

[0023] Figure 5 A schematic diagram of the electric drive assembly of the valve control device is shown.

[0024] Figure 6 A schematic diagram of the manual drive assembly of the valve control device is shown.

[0025] Figure 7 A schematic diagram of the rotating handle of the valve control device is shown.

[0026] Figure 8 A schematic diagram of the connection structure between the actuator and the connector of the valve control device is shown.

[0027] In the diagram: 1. Housing; 11. Flange; 2. Main shaft; 21. Limiting strip; 3. Electric drive assembly; 31. Worm gear; 311. First positioning hole; 32. Drive motor; 33. Worm; 4. Manual drive assembly; 41. Outer rotating rod; 411. Second positioning hole; 412. Movable groove; 413. First inclined surface; 414. Contact surface; 42. Inner rod body; 421. Push block; 422. Sliding shaft; 43. Rotating handle; 431. Connecting part; 432. Eccentric arc groove; 433. Fixed shaft; 434. Handle; 44. Push ball; 5. Pushing part; 51. Cylinder; 52. Second inclined surface; 521. Shrinking edge; 53. Snap-fit ​​edge; 6. Insertion piece; 61. Sliding sleeve; 62. First locking pin; 63. Second locking pin; 7. Spring; 8. Angle detection assembly; 81. Turntable; 82. Detection head. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0030] Reference Figures 1-8 This embodiment provides a valve control device, including, Housing 1; Housing 1 is used to protect the internal equipment, wherein the end of housing 1 is provided with flange 11 for connection to the end of valve.

[0031] Rotate the main shaft 2 located inside the housing 1; wherein, the main shaft 2 is used to connect with the valve operating rod to realize the control of the valve opening and closing.

[0032] An electric drive assembly 3 is installed inside the housing 1; the electric drive assembly 3 is used to automatically control the rotation of the main shaft 2 so as to realize the remote opening of the valve.

[0033] The manual drive assembly 4 is located inside the housing 1; the manual drive assembly 4 is used to rotate the spindle 2 by manual operation, so that the operator can control the opening and closing of the valve at the work site.

[0034] The pusher 5 is located inside the housing 1; The connector 6, which is slidably disposed outside the spindle 2, is rotatably connected to the push part 5 and the connector 6; The connector 6 can slide relative to the spindle 2, but cannot rotate relative to the spindle 2. The pusher 5 can control the height of the connector 6.

[0035] Spring 7 is installed inside the push part 5; The elastic force of spring 7 will push connector 6 closer to electric drive assembly 3; The manual drive assembly 4 includes an outer rotating rod 41 and an inner rod body 42 that is slidably disposed within the outer rotating rod 41. A rotating handle 43 is rotatably disposed on the inner rod body 42. Among them, the inner rod 42 can only slide relative to the outer rotating rod 41, but cannot rotate relative to the outer rotating rod 41.

[0036] Rotating the handle 43 will push the pusher 5 upward, and the pusher 5 will pull the connector 6 closer to the end of the outer rotating rod 41; When the connector 6 approaches the electric drive assembly 3, the electric drive assembly 3 can control the spindle 2 to rotate. When the connector 6 approaches the outer rotating rod 41, the manual drive assembly 4 can control the rotation of the spindle 2.

[0037] In the initial state, under the action of gravity, the rotating handle 43 is kept parallel to the outer rotating rod 41. At this time, the spring force of the spring 7 causes the plug 6 to approach the electric drive assembly 3. The electric drive assembly 3 can control the rotation of the main shaft 2 to realize the opening and closing operation of the valve.

[0038] When the operator arrives at the site, the operator turns the handle 43. As the handle 43 turns, the pusher 5 rises. The pusher 5 pulls the connector 6 away from the electric drive assembly 3 and then closes to the end of the outer rotating rod 41 and engages with the outer rotating rod 41. At this time, the outer rotating rod 41 and the inner rod body 42 are rotated through the handle 43 to realize the rotation operation of the main shaft 2, thereby realizing the control of the opening and closing of the valve.

[0039] Reference Figures 1-8 For example, the electric drive assembly 3 includes a worm gear 31 that is rotatably disposed outside the main shaft 2, and a drive motor 32 disposed inside the housing 1, the output shaft of the drive motor 32 being connected to a worm 33.

[0040] The worm gear 31 and the main shaft 2 can rotate relative to each other. The drive motor 32 can control the rotation of the worm 33. The worm 33 and the worm gear 31 are meshed and connected. The rotation of the worm 33 can control the rotation of the worm gear 31.

[0041] The worm gear 31 has a first positioning hole 311 on its end face; there are several first positioning holes 311, which are distributed in an evenly spaced circular pattern at the end of the worm gear 31.

[0042] Preferably, the end of the outer rotating rod 41 is provided with a second positioning hole 411; a plurality of second positioning holes 411 are provided and are distributed in an equally spaced circular pattern at the end of the outer rotating rod 41.

[0043] The connector 6 is used to connect to the first positioning hole 311 or the second positioning hole 411.

[0044] Reference Figures 1-8 For example, the outer wall of the spindle 2 is provided with a limiting strip 21; multiple limiting strips 21 are provided and are evenly distributed on the outer wall of the spindle 2.

[0045] The connector 6 includes a sliding sleeve 61 that is slidably disposed outside the limiting strip 21, a first locking post 62 disposed at the end of the sliding sleeve 61, and a second locking post 63 disposed at the end of the sliding sleeve 61 away from the first locking post 62.

[0046] The inner wall of the sliding sleeve 61 is provided with a limiting groove that matches the outer wall of the limiting strip 21, which can limit the relative rotation between the sliding sleeve 61 and the main shaft 2.

[0047] Several first locking posts 62 and second locking posts 63 are provided, and they are distributed in a circular pattern at equal intervals at both ends of the sliding sleeve 61.

[0048] The first locking post 62 and the first positioning hole 311 are arranged in a one-to-one correspondence, and the second locking post 63 and the second positioning hole 411 are arranged in a one-to-one correspondence.

[0049] One end of the spring 7 abuts against one end of the outer rotating rod 41, and the other end of the spring 7 abuts against the top of the sliding sleeve 61.

[0050] In the initial state, under the elastic force of spring 7, spring 7 will push the sliding sleeve 61 away from the outer rotating rod 41, so that the first locking pin 62 at the end of the sliding sleeve 61 remains close to the first positioning hole 311. When it is necessary to control the rotation of the main shaft 2 through the electric drive assembly 3, the worm gear 33 is rotated through the drive motor 32. When the first locking pin 62 and the first positioning hole 311 are aligned, the elastic force of spring 7 can make the sliding sleeve 61 slide down, so that the first locking pin 62 is locked into the first positioning hole 311. At this time, the rotation of worm gear 31 can make the main shaft 2 rotate together, thereby realizing the opening and closing operation of the valve. Through the elastic force of spring 7, the driving effect of electric drive assembly 3 can be guaranteed, avoiding the transmission interruption problem caused by the jamming of traditional clutch. Even if the first locking pin 62 and the first positioning hole 311 are not aligned, after the worm gear 31 rotates, the misaligned first locking pin 62 and the first positioning hole 311 can be aligned, and then the elastic force of spring 7 is used to form a locking connection.

[0051] Reference Figures 1-8 In one optional embodiment, the outer rotating rod 41 is provided with a movable groove 412, and a push ball 44 is rolled in the movable groove 412; wherein, at least two push balls 44 are provided.

[0052] The inner rod 42 has a push block 421 at its end. The outer wall of the push block 421 is inclined. After the inner rod 42 pulls out the outer rotating rod 41, the push ball 44 can be pushed outward by the outer wall of the push block 421.

[0053] For example, when the inner rod 42 slides out from the outer rotating rod 41, the push block 421 pushes the ball 44 out of the movable groove 412, and after the ball 44 is pushed out, it pushes the push part 5 to rise.

[0054] The outer rotating rod 41 is provided with a first inclined surface 413; The pushing part 5 includes a cylindrical body 51 and a second inclined surface 52 provided on the cylindrical body 51. The cylindrical body 51 is provided with a snap-fit ​​edge 53. The first inclined plane 413 and the second inclined plane 52 are arranged in parallel.

[0055] When the push ball 44 is pushed out of the movable groove 412, the push ball 44 will abut against the second inclined surface 52. Guided by the second inclined surface 52, the cylinder 51 will rise. The snap-fit ​​edge 53 and the outer wall of the sliding sleeve 61 will rotate and connect. After rising, the cylinder 51 will pull the sliding sleeve 61 to rise.

[0056] Preferably, the outer rotating rod 41 is provided with an abutment surface 414; the second inclined surface 52 is provided with a contraction edge 521.

[0057] When the first locking pin 62 is inserted into the first positioning hole 311, the contraction edge 521 and the contact surface 414 come into contact.

[0058] Preferably, the rotating handle 43 is provided with a connecting part 431, the connecting part 431 is provided with an eccentric arc groove 432, and the connecting part 431 is provided with a fixed shaft 433; The fixed shaft 433 and the outer rotating rod 41 are rotatably connected; One end of the inner rod 42 is provided with a sliding shaft 422; The sliding shaft 422 and the eccentric arc groove 432 are slidably connected.

[0059] Furthermore, a handle 434 is provided on the rotating handle 43; The center of the eccentric arc groove 432 is offset from the fixed shaft 433. When the rotating handle 43 and the outer rotating rod 41 are parallel, the contact surface 414 and the contraction edge 521 are in contact. At this time, the sliding shaft 422 is located in the eccentric arc groove 432 away from the fixed shaft 433. When the rotating handle 43 is rotated to be perpendicular to the outer rotating rod 41, the pushing ball 44 is pushed out from the movable groove 412, and the sliding shaft 422 slides to the end of the eccentric arc groove 432 close to the fixed shaft 433.

[0060] When the operator goes to the site to operate the manual drive component 4, they need to first rotate the handle 43 until it is perpendicular to the outer rotating rod 41. It should be noted that the maximum rotation angle of the handle 43 is 90 degrees. By rotating the handle 43, the sliding shaft 422 will slide from the end of the eccentric arc groove 432 away from the fixed shaft 433 to the end closer to the fixed shaft 433, thereby causing the inner rod 42 to rise. The pushing block 421 pushes out the pushing ball 44, causing the cylinder 51 to rise and drive the sliding sleeve 61 to rise. The first locking pin 62 loses its engagement with the first positioning hole 311. At this point, the electric drive assembly 3 will no longer be able to control the rotation of the main shaft 2. The second locking pin 63 abuts against the end of the outer rotating rod 41. It can be determined whether the second locking pin 63 is inserted into the second positioning hole 411 by judging whether the rotating handle 43 can be rotated to a horizontal state. If the rotating handle 43 cannot be rotated to a horizontal state, then the outer rotating rod 41 is slightly rotated to align the second locking pin 63 and the second positioning hole 411. After the second locking pin 63 is inserted into the second positioning hole 411, the operator holds the handle 434. At this time, rotating the outer rotating rod 41 can make the main shaft 2 rotate together to realize the opening and closing operation of the valve body.

[0061] After the manual control of the valve body is completed, under the gravity of the rotating handle 43, the rotating handle 43 will swing downward until the rotating handle 43 and the outer rotating rod 41 are parallel. At the same time as the operator releases the rotating handle 43, the elastic force of the spring 7 will push the sliding sleeve 61 down, so that the second inclined surface 52 will push the ball 44 back into the movable groove 412. At this time, the elastic force of the spring 7 will make the first locking pin 62 have a tendency to move closer to the worm gear 31, so as to ensure the normal operation of the subsequent electric drive assembly 3.

[0062] In summary, the electric drive assembly 3 and the manual drive assembly 4 of the present invention do not require an additional structure for switching. When manual operation is required, the feature of the rotating handle 43 is used to slide the connector 6, switching the spindle 2 to connect with the manual drive assembly 4. After the manual operation is completed, gravity and the spring 7 are used to bring the connector 6 close to the electric drive assembly 3, so that the electric drive assembly 3 can control the spindle 2 to rotate. This avoids the inability to remotely control traditional equipment caused by forgetting to rotate the switching handle.

[0063] The spindle 2 has a turntable 81 on its outer wall and a detection head 82 inside the housing 1. The turntable 81 and the detection head 82 constitute an angle detection component 8, which can be used to detect the rotation angle of the spindle 2, making it convenient for the operator to control remotely.

[0064] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A valve control device, characterized in that: include, Shell (1); Rotate the main shaft (2) located inside the housing (1); An electric drive assembly (3) is provided inside the housing (1). Manual drive assembly (4) is provided inside the housing (1). A pusher (5) is provided inside the housing (1); A connector (6) is slidably disposed outside the main shaft (2), and the pushing part (5) and the connector (6) are rotatably connected; A spring (7) is provided inside the push part (5); The elastic force of the spring (7) will push the plug (6) closer to the electric drive assembly (3). The manual drive assembly (4) includes an outer rotating rod (41) and an inner rod body (42) slidably disposed within the outer rotating rod (41), and a rotating handle (43) is rotatably disposed on the inner rod body (42). Rotating the handle (43) will push the pusher (5) upward, and the pusher (5) will pull the connector (6) closer to the end of the outer rotating rod (41); When the connector (6) approaches the electric drive assembly (3), the electric drive assembly (3) can control the rotation of the spindle (2); When the connector (6) approaches the outer rotating rod (41), the manual drive assembly (4) can control the rotation of the spindle (2).

2. The valve control device according to claim 1, characterized in that: The electric drive assembly (3) includes a worm gear (31) rotatably disposed outside the main shaft (2) and a drive motor (32) disposed inside the housing (1), the output shaft of the drive motor (32) being connected to a worm (33).

3. The valve control device according to claim 2, characterized in that: The end face of the worm gear (31) is provided with a first positioning hole (311). The end of the outer rotating rod (41) is provided with a second positioning hole (411). The connector (6) is used to connect with the first positioning hole (311) or the second positioning hole (411).

4. The valve control device according to any one of claims 1 to 3, characterized in that: The outer wall of the main shaft (2) is provided with a limiting strip (21); The connector (6) includes a sliding sleeve (61) slidably disposed outside the limiting strip (21), a first locking post (62) disposed at the end of the sliding sleeve (61), and a second locking post (63) disposed at the end of the sliding sleeve (61) away from the first locking post (62).

5. The valve control device according to claim 4, characterized in that: The outer rotating rod (41) is provided with a movable groove (412), and a push ball (44) is rolled in the movable groove (412). The end of the inner rod (42) is provided with a push block (421).

6. The valve control device according to claim 5, characterized in that: When the inner rod (42) slides out from the outer rotating rod (41), the push block (421) pushes the push ball (44) out from the movable groove (412), and after the push ball (44) is pushed out, it will push the push part (5) to rise.

7. The valve control device according to claim 4, characterized in that: The outer rotating rod (41) is provided with a first inclined surface (413); The pushing part (5) includes a cylindrical body (51) and a second inclined surface (52) provided on the cylindrical body (51), and a snap-fit ​​edge (53) is provided on the cylindrical body (51). The snap-fit ​​edge (53) and the outer wall of the sliding sleeve (61) are rotatably connected.

8. The valve control device according to claim 7, characterized in that: The outer rotating rod (41) is provided with a contact surface (414). The second inclined plane (52) has a contraction edge (521).

9. The valve control device according to claim 8, characterized in that: The rotating handle (43) is provided with a connecting part (431), the connecting part (431) is provided with an eccentric arc groove (432), and the connecting part (431) is provided with a fixed shaft (433). The fixed shaft (433) and the outer rotating rod (41) are rotatably connected; One end of the inner rod (42) is provided with a sliding shaft (422); The sliding shaft (422) and the eccentric arc groove (432) are slidably connected.

10. The valve control device according to claim 9, characterized in that: The rotating handle (43) is provided with a grip (434); When the rotating handle (43) and the outer rotating rod (41) are parallel, the contact surface (414) and the contraction edge (521) abut against each other.

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