An electric intelligent ball valve

Abstract

The application discloses an electric intelligent ball valve, and relates to the field of ball valves, which comprises a valve body, a valve rod arranged on the valve body, and an electric actuator shell, wherein an electric actuator drive shaft is arranged in the electric actuator shell, a manual operation cavity is formed in one end of the electric actuator shell, and the top end of the valve rod and the bottom end of the electric actuator drive shaft both extend into the manual operation cavity; a lower rectangular block is arranged on the top end of the valve rod, an upper rectangular block is arranged on the bottom end of the electric actuator drive shaft, and a connecting sleeve is arranged between the upper rectangular block and the lower rectangular block. The electric intelligent ball valve is capable of being manually adjusted in the case of continuous power supply when the electric ball valve fails, so that emergency can be avoided and major accidents can be prevented.

Description

Technical Field

[0001] This invention relates to ball valve technology, and more specifically to an electric intelligent ball valve. Background Technology

[0002] An intelligent electric ball valve is a combination of a plug-type ball valve and an electric actuator. The ball valve body consists of a valve core that rotates 90°. The electric actuator receives a standard input signal of 0-10 mA, and the motor drives a gear and worm gear to rotate at a torque. A switch box acts as the regulating valve. In an intelligent electric ball valve, the electric actuator is an indispensable control device for achieving programmed, automatic, and remote control. Its movement is controlled by parameters such as stroke and torque.

[0003] Commonly used intelligent electric ball valves not only allow for remote control but also have an internal clutch shaft. This shaft, turned with an Allen wrench, enables manual adjustment of the valve. In practical applications, if an electric ball valve malfunctions and the electric actuator is still energized, manual adjustment may cause the actuator to continue operating, generating forces inconsistent with manual operation. This can damage the valve, actuator, or clutch mechanism, and may also cause unnecessary electrical shocks to the circuitry or control system, affecting system stability and long-term use. Therefore, power must be disconnected before attempting manual operation.

[0004] However, in practical applications, when operators encounter an emergency caused by a malfunction of the intelligent electric ball valve, the process of first cutting off the power in the control room or at a nearby control switch and then manually closing the electric ball valve takes a long time, which may make the emergency situation more serious and lead to a serious accident. Therefore, this invention provides an electric intelligent ball valve to solve the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide an electric intelligent ball valve to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electric intelligent ball valve, comprising a valve body, a valve stem disposed on the valve body, and an electric actuator housing, wherein an electric actuator drive shaft is disposed inside the electric actuator housing, and a manual operation chamber is provided at one end of the electric actuator housing, wherein the top end of the valve stem and the bottom end of the electric actuator drive shaft both extend into the manual operation chamber;

[0007] A lower rectangular block is installed at the top of the valve stem, and an upper rectangular block is installed at the bottom of the electric actuator drive shaft. A connecting sleeve is installed between the upper and lower rectangular blocks. An upper rectangular groove and a lower rectangular groove are respectively opened at the upper and lower ends inside the connecting sleeve. The upper and lower rectangular blocks are respectively embedded in the upper and lower rectangular grooves. A bearing spring is installed between the inner wall of the lower rectangular groove and the lower rectangular block.

[0008] A drive unit is provided on the outside of the connecting sleeve. The drive unit is used to drive the connecting sleeve to move downward and separate from the drive shaft of the electric actuator and drive the connecting sleeve to rotate.

[0009] Furthermore, the drive unit includes a guide frame installed at the bottom of the inner wall of the manual operation chamber, a mounting frame slidably connected to the guide frame, a support spring installed between the mounting frame and the inner wall of the manual operation chamber, a driving gear and a driven gear meshing with each other sequentially rotatably connected to the surface of the mounting frame, a lower bevel gear coaxially mounted on the outside of the driving gear, an upper bevel gear meshing with the lower bevel gear mounted on the side of the mounting frame, an adjusting column rotatably connected to the side of the mounting frame, and an internal hexagonal groove provided at the end of the adjusting column.

[0010] Furthermore, the adjusting column is coaxially and fixedly connected to the upper bevel gear.

[0011] Furthermore, a drive disk and a drive gear are sequentially installed on the outside of the connecting sleeve from top to bottom. A drive rod corresponding to the drive disk is installed on the side of the mounting bracket. The ends of the drive disk and the drive rod are respectively provided with corresponding drive ramps and auxiliary ramps.

[0012] Furthermore, the specifications of the drive gear are adapted to the driven gear, and the thickness of the drive disc is adapted to the depth of the upper rectangular groove and the vertical distance between the drive gear and the driven gear. The horizontal width of the drive ramp is less than the horizontal distance between the drive gear and the driven gear.

[0013] Furthermore, the electric actuator housing is equipped with a cover corresponding to the manual operation chamber. The cover has a guide groove, and the adjusting column is slidably connected to the inner side of the guide groove. The top of the inner wall of the guide groove has a receiving groove, and a limiting plate is slidably connected inside the receiving groove. A fault-tolerant spring is installed between the top of the limiting plate and the inner wall of the receiving groove. A guide arc surface is provided on the side of the limiting plate near the adjusting column.

[0014] Furthermore, the bottom surface of the limiting plate is positioned below the central axis of the adjusting column.

[0015] Furthermore, the distance between the limiting plate and the end of the guide groove away from the adjusting column is matched with the diameter of the adjusting column, and the distance the adjusting column moves from one side of the guide groove to the other side is matched with the horizontal distance between the driven gear and the driving gear. When the adjusting column moves from one side of the guide groove to the other side, the limiting plate abuts against the side of the adjusting column, and the driven gear moves to mesh with the driving gear.

[0016] Furthermore, the cover is provided with a sealing plate corresponding to the guide groove, and the sealing plate is connected to the cover by a connecting rope.

[0017] Compared with the prior art, the electric intelligent ball valve provided by the present invention has the following beneficial effects:

[0018] 1. This electric intelligent ball valve, through the cooperation of the upper rectangular block, lower rectangular block, connecting sleeve, lower rectangular groove, upper rectangular groove, bearing spring and drive unit, can be quickly manually adjusted without interrupting power when the electric ball valve malfunctions, thereby enabling emergency avoidance and preventing major accidents.

[0019] 2. This electric intelligent ball valve, through the cooperation of the guide groove, limiting plate, fault-tolerant spring, guide arc surface and receiving groove, can restrict the horizontal movement of the adjusting column after it moves to the adjusting position, so that the driving gear and the driven gear can maintain a stable meshing state, thus making it convenient for the operator to rotate and adjust it. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the manual operation chamber provided in an embodiment of the present invention;

[0023] Figure 3 Provided for embodiments of the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the internal structure of the connecting sleeve provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the mounting bracket structure provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the guide groove in the open state provided in an embodiment of the present invention;

[0027] Figure 7 This is a partial cross-sectional view of the cover structure provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Valve body; 101. Valve stem; 102. Electric actuator housing; 103. Electric actuator drive shaft; 2. Manual operation chamber; 21. Lower rectangular block; 22. Upper rectangular block; 23. Connecting sleeve; 24. Upper rectangular groove; 25. Lower rectangular groove; 26. Bearing spring; 3. Guide frame; 31. Mounting bracket; 32. Support spring; 33. Drive gear; 34. Driven gear; 35. Lower bevel gear; 36. Upper bevel gear; 37. Adjusting column; 38. Internal hexagonal groove; 39. Drive disc; 310. Drive gear; 311. Drive rod; 312. Drive inclined surface; 313. Auxiliary inclined surface; 4. Cover; 41. Guide groove; 42. Receiving groove; 43. Limiting plate; 44. Fault-tolerant spring; 45. Guide arc surface; 5. Sealing plate; 51. Connecting rope. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] Please see Figures 1-5 An electric intelligent ball valve includes a valve body 1, a valve stem 101 disposed on the valve body 1, and an electric actuator housing 102. An electric actuator drive shaft 103 is disposed inside the electric actuator housing 102. A manual operation chamber 2 is opened at one end of the electric actuator housing 102. The top end of the valve stem 101 and the bottom end of the electric actuator drive shaft 103 both extend into the manual operation chamber 2.

[0033] It should be noted that the electric actuator is a control device that realizes the programmable, automatic and remote control of the electric ball valve. It not only includes an electrical control module, a position feedback device and a limit switch, but also an electric motor that provides driving force and a related gear transmission mechanism. All of the above mechanisms are existing technologies. The electric actuator drive shaft 103 mentioned here is the drive part used to drive the valve stem 101 to rotate. Its drive source comes from the electric motor. This transmission is existing technology and will not be described in detail here.

[0034] A lower rectangular block 21 is installed at the top of the valve stem 101, and an upper rectangular block 22 is installed at the bottom of the electric actuator drive shaft 103. A connecting sleeve 23 is installed between the upper rectangular block 22 and the lower rectangular block 21. An upper rectangular groove 24 and a lower rectangular groove 25 are respectively opened at the upper and lower ends inside the connecting sleeve 23. The upper rectangular block 22 and the lower rectangular block 21 are respectively embedded in the upper rectangular groove 24 and the lower rectangular groove 25. A bearing spring 26 is installed between the inner wall of the lower rectangular groove 25 and the lower rectangular block 21.

[0035] A drive unit is provided on the outside of the connecting sleeve 23. The drive unit is used to drive the connecting sleeve 23 to move downward and separate from the electric actuator drive shaft 103 and drive the connecting sleeve 23 to rotate.

[0036] The specific structure of the drive unit is described below. The drive unit includes a guide frame 3 installed at the bottom of the inner wall of the manual operation chamber 2. A mounting frame 31 is slidably connected to the guide frame 3. A support spring 32 is installed between the mounting frame 31 and the inner wall of the manual operation chamber 2. A driving gear 33 and a driven gear 34 are rotatably connected to the surface of the mounting frame 31 in sequence. A lower bevel gear 35 is coaxially mounted on the outside of the driving gear 33. An upper bevel gear 36 that meshes with the lower bevel gear 35 is mounted on the side of the mounting frame 31. An adjusting column 37 is rotatably connected to the side of the mounting frame 31. An internal hexagonal groove 38 is provided at the end of the adjusting column 37.

[0037] It should be noted that the adjusting column 37 is coaxially and fixedly connected to the upper bevel gear 36, so that the adjusting column 37 can drive the upper bevel gear 36 to rotate synchronously when it rotates.

[0038] In addition, a drive disk 39 and a drive gear 310 are installed on the outside of the connecting sleeve 23 from top to bottom. A drive rod 311 corresponding to the drive disk 39 is installed on the side of the mounting bracket 31. The ends of the drive disk 39 and the drive rod 311 are respectively provided with corresponding drive inclined surfaces 312 and auxiliary inclined surfaces 313.

[0039] It should be further explained that the specifications of the drive gear 310 are compatible with those of the driven gear 34, and the thickness of the drive disc 39 is compatible with the depth of the upper rectangular groove 24 and the vertical distance between the drive gear 310 and the driven gear 34. The horizontal width of the drive inclined surface 312 is less than the horizontal distance between the drive gear 310 and the driven gear 34.

[0040] When manual operation of the valve stem 101 is required, the operator inserts an Allen wrench into the Allen socket 38 and pushes the wrench to move it, which in turn moves the adjusting column 37. The movement of the adjusting column 37 moves the mounting bracket 31, which in turn moves the drive gear 33, driven gear 34, upper bevel gear 36, lower bevel gear 35, and drive rod 311 synchronously. This allows the auxiliary inclined surface 313 on the drive rod 311 to move relative to the drive inclined surface 312, and during the movement, it applies a downward thrust to the drive disc 39, causing the drive disc 39 to move downward and move the connecting sleeve 23 downward, resulting in relative movement between the connecting sleeve 23 and the upper rectangular block 22. When the auxiliary inclined plane 313 moves to the top of the driving inclined plane 312, the connecting sleeve 23 drives the driving gear 310 to move down to the same horizontal plane as the driven gear 34. As the mounting bracket 31 continues to move, the driven gear 34 continues to move towards the driving gear 310 until the two mesh. At this time, the operator drives the adjusting column 37 to rotate by turning the Allen wrench. Under the transmission of the upper bevel gear 36, lower bevel gear 35, driving gear 33 and driven gear 34, the driving gear 310 rotates and drives the connecting sleeve 23 to rotate. The rotation of the connecting sleeve 23 drives the valve stem 101 to rotate, so that the valve stem 101 can be manually adjusted without power failure.

[0041] It should be noted that when adjusting the valve stem 101, the valve stem 101 can only remain in the position of the ball valve being open or closed. Therefore, the drive gear 310 also has only two states. Thus, when engaging the driven gear 34 with the drive gear 310, the state of the driven gear 34 only needs to be adjusted according to the state of the drive gear 310. Normally, when the ball valve is working, the valve stem 101 is in the ball valve working state position. Therefore, the initial state of the driven gear 34 can be set to correspond to the drive gear 310 in the ball valve working state, so that manual adjustment can be performed in time in case of failure.

[0042] Example 2:

[0043] Please see Figures 6-7 This embodiment provides a technical solution based on the above embodiments: a cover 4 corresponding to the manual operation cavity 2 is installed on the electric actuator housing 102. A guide groove 41 is provided on the cover 4. The adjusting column 37 is slidably connected to the inner side of the guide groove 41. A receiving groove 42 is provided at the top of the inner wall of the guide groove 41. A limiting plate 43 is slidably connected inside the receiving groove 42. A fault-tolerant spring 44 is installed between the top of the limiting plate 43 and the inner wall of the receiving groove 42. A guide arc surface 45 is provided on the side of the limiting plate 43 near the adjusting column 37.

[0044] It should be noted that the bottom of the limiting plate 43 is lower than the position of the central axis of the adjusting column 37.

[0045] Furthermore, the distance between the limiting plate 43 and the end of the guide groove 41 away from the adjusting column 37 is matched with the diameter of the adjusting column 37, and the distance between the adjusting column 37 and the other side of the guide groove 41 is matched with the horizontal distance between the driven gear 34 and the driving gear 310. When the adjusting column 37 moves from one side of the guide groove 41 to the other side, the limiting plate 43 abuts against the side of the adjusting column 37, and the driven gear 34 moves to mesh with the driving gear 310.

[0046] During the movement of the adjusting column 37, it will contact the guide arc surface 45 and apply a pushing force to it as it continues to move, causing the limiting plate 43 to be pushed upward and move into the receiving groove 42. At the same time, it will also compress the fault-tolerant spring 44. After the adjusting column 37 passes through the bottom of the limiting plate 43, under the action of the rebound force of the fault-tolerant spring 44, the limiting plate 43 moves downward and restricts the reverse reset of the adjusting column 37, so that the operator can freely rotate the adjusting column 37, which is convenient for the operator to perform adjustment operations.

[0047] Example 3:

[0048] Please see Figure 6 This embodiment provides a technical solution based on the above embodiments: a sealing plate 5 corresponding to the guide groove 41 is provided on the cover 4. The sealing plate 5 is connected to the cover 4 by a connecting rope 51. The connecting rope 51 can be a rubber strip made of composite rubber material with good chemical properties, or a rope made of metal material. Its performance needs to meet the needs of outdoor and special environments.

[0049] The adjustment column 37 can be hidden when not manually adjusted, which can provide some protection for it.

[0050] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electrically powered intelligent ball valve, comprising a valve body (1), a valve stem (101) arranged on the valve body (1), and an electric actuator housing (102), wherein an electric actuator drive shaft (103) is arranged inside the electric actuator housing (102), characterized in that, One end of the electric actuator shell (102) is provided with a manual operation cavity (2), the top end of the valve rod (101) and the bottom end of the electric actuator drive shaft (103) extend into the manual operation cavity (2); The top end of the valve rod (101) is provided with a lower rectangular block (21), the bottom end of the electric actuator drive shaft (103) is provided with an upper rectangular block (22), a connecting sleeve (23) is arranged between the upper rectangular block (22) and the lower rectangular block (21), the upper and lower ends of the connecting sleeve (23) are respectively provided with an upper rectangular slot (24) and a lower rectangular slot (25), the upper rectangular block (22) and the lower rectangular block (21) are respectively embedded in the upper rectangular slot (24) and the lower rectangular slot (25), and a bearing spring (26) is arranged between the inner wall of the lower rectangular slot (25) and the lower rectangular block (21); The outer portion of the connecting sleeve (23) is provided with a driving unit, the driving unit is used for driving the connecting sleeve (23) to move downward and separate from the electric actuator drive shaft (103) and driving the connecting sleeve (23) to rotate, the driving unit comprises a guide frame (3) arranged on the inner wall bottom of the manual operation cavity (2), a mounting frame (31) is slidably connected to the guide frame (3), a supporting spring (32) is arranged between the mounting frame (31) and the inner wall of the manual operation cavity (2), a driving gear (33) and a driven gear (34) are rotatably connected to the surface of the mounting frame (31) in sequence and are engaged with each other, a lower bevel gear (35) is coaxially arranged on the outer portion of the driving gear (33), an upper bevel gear (36) is arranged on the side surface of the mounting frame (31) and is engaged with the lower bevel gear (35), an adjusting column (37) is rotatably connected to the side surface of the mounting frame (31), an inner hexagonal groove (38) is arranged on the end portion of the adjusting column (37), a driving disc (39) and a driving gear (310) are arranged on the outer portion of the connecting sleeve (23) in sequence from top to bottom, a driving rod (311) corresponding to the driving disc (39) is arranged on the side surface of the mounting frame (31), and a driving inclined surface (312) and an auxiliary inclined surface (313) corresponding to the driving disc (39) and the driving rod (311) are arranged on the end portions of the driving disc (39) and the driving rod (311) respectively; A cover (4) corresponding to the manual operation cavity (2) is arranged on the electric actuator shell (102), a guide groove (41) is arranged on the cover (4), the adjusting column (37) is slidably connected to the inner side surface of the guide groove (41), a containing groove (42) is arranged on the top of the inner wall of the guide groove (41), a limiting plate (43) is slidably connected to the inside of the containing groove (42), a fault-tolerant spring (44) is arranged between the top of the limiting plate (43) and the inner wall of the containing groove (42), and a guide arc surface (45) is arranged on the side of the limiting plate (43) close to the adjusting column (37). The distance value between the limiting plate (43) and the guide groove (41) away from the one end of the adjusting column (37) is matched with the diameter value of the adjusting column (37), and the distance value of the adjusting column (37) moving from one side of the guide groove (41) to the other side is matched with the horizontal distance value between the driven gear (34) and the driving gear (310), when the adjusting column (37) moves from one side of the guide groove (41) to the other side, the limiting plate (43) abuts against the side surface of the adjusting column (37), and the driven gear (34) moves to engage with the driving gear (310); The cover body (4) is provided with a blocking plate (5) corresponding to the guide groove (41), and the blocking plate (5) is connected with the cover body (4) through a connecting rope (51).

2. The electrically powered intelligent ball valve of claim 1, wherein, The adjusting column (37) is coaxially fixedly connected with the upper bevel gear (36).

3. The electrically powered intelligent ball valve of claim 2, wherein, The specification of the driving gear (310) is matched with the driven gear (34), and the thickness value of the driving disc (39) is matched with the depth value of the upper rectangular slot (24) and the vertical distance value between the driving gear (310) and the driven gear (34), and the horizontal width value of the driving inclined surface (312) is less than the horizontal distance value between the driving gear (310) and the driven gear (34).

4. The electrically powered intelligent ball valve of claim 3, wherein, The bottom surface position of the limiting plate (43) is lower than the position of the central axis of the adjusting column (37).

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