Valve electric actuator with good stability

Abstract

The invention belongs to the technical field of electric valves, and discloses a good-stability valve electric actuator which comprises a valve body, a shell is arranged at the top of the valve body, a valve rod is arranged in the shell, a valve plate is arranged at the bottom end of the valve rod, a transmission gear is arranged at the top end of the valve rod, a rotating shaft is arranged in the shell, and the top end of the rotating shaft is sleeved with a sleeve. A telescopic groove is formed in the casing pipe, a second driving gear is arranged at the bottom end of the casing pipe, an inserting rod is arranged at the top of the rotating shaft, a clamping block is arranged at the top end of the inserting rod, a clamping groove is formed in the top wall of the telescopic groove, and protruding blocks are arranged on the two sides of the clamping groove. And the second driving gear is positioned by utilizing an inserting rod, a clamping block, a clamping spring, a clamping groove and a convex block, so that continuous meshing of the second driving gear and the transmission gear is ensured, and the situation that the valve plate cannot be controlled to be opened and closed due to failure or poor contact of electronic components is effectively avoided through the design.

Description

Technical Field

[0001] The invention belongs to the technical field of electric valves, and in particular relates to an electric valve actuator with good stability. Background Art

[0002] A valve is a mechanical device that controls the flow rate, direction, pressure, temperature, etc. of a flowing fluid medium. It is also a basic component in a piping system. It can be operated manually or with a handwheel, handle or pedal, and the pressure of the fluid medium can also be changed by control. Valves are widely used in all walks of life and in industrial production. They are essential devices for domestic water pipelines and industrial fluid pipelines.

[0003] At present, most of the existing electric valves are controlled by internal electronic components. Due to the low frequency of use, if they are not used for a long time after installation, the electronic components inside the valve body may fail or have poor contact, thereby losing the automatic control function. Most traditional valve electric actuators do not have the function of manual operation, resulting in the inability to complete the cut-off work through manual operation in time after a failure occurs, which is not conducive to use in emergency situations. For this reason, we propose a valve electric actuator with good stability. Summary of the invention

[0004] The object of the present invention is to provide a valve electric actuator with good stability to solve the existing problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A valve electric actuator with good stability, comprising a valve body, a sleeve and a second driving gear, a housing fixedly mounted on the top of the valve body, a valve stem movably connected to the center of the inner bottom end of the housing through a sealed bearing, a valve plate fixedly mounted on one end of the valve stem extending to the inside of the valve body, a transmission gear fixedly mounted on the outer periphery of the top end of the valve stem, a rotating shaft movably connected to the bottom surface of one side of the inner side of the housing through a bearing, a sleeve sleeved on the top end of the rotating shaft, a contraction groove provided inside the sleeve, the sleeve through the limit grooves provided on both sides of the inner side and the limit blocks provided on both sides of the top end of the rotating shaft so that the two are limitedly slidably connected, a second driving gear fixedly mounted on the outer periphery of the bottom end of the sleeve, the second driving gear and the transmission gear are staggered, the top end of the sleeve extends to the outer side of the top of the housing and is slidably connected to the housing, a plug rod is provided on the top of the rotating shaft, and retractable clamping blocks are provided on both sides of the top end of the plug rod, a clamping groove is provided on the top wall of the contraction groove corresponding to the position of the plug rod, and convex blocks are provided on both sides of the inner side of the clamping groove.

[0006] Preferably, a pressure block is slidably provided at the inner top end of the slot, a pressure rod is provided on the top of the pressure block, the pressure rod extends to the outside of the top of the sleeve and is slidably connected thereto, inclined plates are fixedly installed on both sides of the bottom of the pressure block, a top block is provided on the opposite side of the two protrusions, an inclined surface is provided on the top of the top block corresponding to one side of the inclined plate, a return spring is provided on one side of the top block, two ends of the return spring are respectively fixedly connected to the protrusion and the top block, and return springs are also provided on both sides of the pressure block.

[0007] Preferably, a driving motor is fixedly mounted on a top wall of the housing on one side away from the sleeve, and a first driving gear is provided at an output shaft end of the driving motor, and the first driving gear is meshingly connected with a transmission gear.

[0008] Preferably, limiting sliders are fixedly provided on both sides of the top block, and limiting grooves are provided on the opposite sides of the two protrusions corresponding to the positions of the limiting sliders, and the limiting sliders extend into the interior of the limiting grooves and are slidably connected to the inner walls thereof.

[0009] Preferably, a rotating disk is fixedly mounted on the outer periphery of the top of the sleeve, and the top of the pressure rod passes through the middle of the rotating disk and is slidably connected thereto.

[0010] Preferably, a lifting spring is further provided at the inner top of the shrinkage groove, and two ends of the lifting spring are fixedly connected to the top wall of the shrinkage groove and the top of the rotating shaft respectively.

[0011] Preferably, a clamping spring is provided inside both sides of the top end of the insertion rod, and two ends of the clamping spring are fixedly connected to the insertion rod and the clamping block respectively.

[0012] Preferably, a controller is provided at the center of the inner top wall of the shell, and the controller is fixed to the inner top wall of the shell by mounting screws.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By arranging a rotating shaft, a sleeve, a second driving gear and a turntable inside the shell, the transmission gear is driven to achieve the purpose of controlling the opening and closing of the valve plate, and the sleeve is positioned by the provided plug rod, a clamping block, a clamping spring, a clamping groove and a protrusion to achieve the purpose of positioning the second driving gear, so that when manual control is performed, the second driving gear can be continuously meshed with the transmission gear to avoid the sleeve being repeatedly lifted up. Such a design effectively avoids the situation where the opening and closing of the valve plate cannot be controlled due to failure of electronic components or poor contact.

[0015] 2. By utilizing the pressure rod, pressure block, inclined plate and top block, the clamping block is driven. After the operation is completed, the pressure rod can be pressed to shrink the clamping block, thereby achieving the purpose of releasing the clamping state, so that the second drive gear is separated from the transmission gear, avoiding the situation that after the electronic components are repaired, when the drive motor controls the opening and closing of the valve plate, the turntable is driven by the father drive gear to rotate synchronously.

[0016] 3. By arranging a lifting spring inside the shrinkage groove, an upward thrust can be provided to the sleeve when it needs to be reset, ensuring the stable reset of the sleeve. The limit slide groove and limit slider are provided to limit the top block to avoid the situation where the top block cannot be released due to misalignment during the squeezing of the inclined plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure;

[0021] Figure 5 For the present invention Figure 3 Middle B is a schematic diagram of the enlarged structure.

[0022] In the figure: 1. valve body; 2. shell; 3. valve stem; 4. valve plate; 5. transmission gear; 6. drive motor; 7. first drive gear; 8. controller; 9. rotating shaft; 10. limit block; 11. sleeve; 12. second drive gear; 13. contraction groove; 14. limit groove; 15. lifting spring; 16. turntable; 17. insertion rod; 18. clamping block; 19. clamping spring; 20. clamping groove; 21. protrusion; 22. pressure block; 23. pressure rod; 24. inclined plate; 25. lift block; 26. reset spring; 27. limit slide groove; 28. limit slide block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The present invention provides a technical solution of a valve electric actuator with good stability: it includes a valve body 1, a sleeve 11 and a second driving gear 12, a housing 2 is fixedly installed on the top of the valve body 1, a valve stem 3 is movably connected to the center of the bottom end of the housing 2 through a sealed bearing, a valve plate 4 is fixedly installed on one end of the valve stem 3 extending to the inside of the valve body 1, a transmission gear 5 is fixedly installed on the top periphery of the valve stem 3, a rotating shaft 9 is movably connected to the bottom surface of one side of the housing 2 through a bearing, a sleeve 11 is sleeved on the top of the rotating shaft 9, a contraction groove 13 is arranged inside the sleeve 11, and the sleeve 11 is connected to the inner The limiting grooves 14 opened on both sides of the part and the limiting blocks 10 opened on both sides of the top of the rotating shaft 9 enable the two to be connected in a limited sliding manner. A second driving gear 12 is fixedly installed on the outer periphery of the bottom end of the sleeve 11. The second driving gear 12 is staggered with the transmission gear 5. The top of the sleeve 11 extends to the outside of the top of the shell 2 and is slidably connected with the shell 2. An insertion rod 17 is provided on the top of the rotating shaft 9, and retractable clamping blocks 18 are provided on both sides of the top of the insertion rod 17. A clamping groove 20 is opened on the top wall of the contraction groove 13 corresponding to the position of the insertion rod 17, and protrusions 21 are provided on both sides of the inner part of the clamping groove 20.

[0025] Specifically, a pressure block 22 is slidably provided at the inner top of the slot 20, a pressure rod 23 is provided at the top of the pressure block 22, the pressure rod 23 extends to the top outside of the sleeve 11 and is slidably connected thereto, inclined plates 24 are fixedly installed on both sides of the bottom of the pressure block 22, a top block 25 is provided on the opposite side of the two protrusions 21, a top of the top block 25 is provided with an inclined surface corresponding to one side of the inclined plate 24, a return spring 26 is provided on one side of the top block 25, and both ends of the return spring 26 are fixedly connected to the protrusion 21 and the top block 25, and return springs 26 are also provided on both sides of the pressure block 22.

[0026] Specifically, a driving motor 6 is fixedly mounted on a top wall of the housing 2 on one side away from the sleeve 11 . A first driving gear 7 is disposed at an output shaft end of the driving motor 6 . The first driving gear 7 is meshedly connected with the transmission gear 5 .

[0027] Specifically, limit slide blocks 28 are fixedly provided on both sides of the top block 25, and limit slots 27 are provided on the opposite sides of the two protrusions 21 at positions corresponding to the limit slide blocks 28. The limit slide blocks 28 extend into the interior of the limit slots 27 and are slidably connected to the inner walls thereof.

[0028] Specifically, a rotating disk 16 is fixedly mounted on the outer periphery of the top of the sleeve 11 , and the top of the pressure rod 23 passes through the middle of the rotating disk 16 and is slidably connected thereto.

[0029] Specifically, a lifting spring 15 is further provided at the inner top of the shrinkage groove 13 , and two ends of the lifting spring 15 are fixedly connected to the top wall of the shrinkage groove 13 and the top of the rotating shaft 9 respectively.

[0030] Specifically, a clamping spring 19 is disposed inside both sides of the top end of the insertion rod 17 , and two ends of the clamping spring 19 are fixedly connected to the insertion rod 17 and the clamping block 18 , respectively.

[0031] Specifically, a controller 8 is disposed at the center of the inner top wall of the shell 2 , and the controller 8 is fixed to the inner top wall of the shell 2 by mounting screws.

[0032] In the present embodiment, during use, under normal circumstances, the drive controller 8 starts the drive motor 6, causing it to rotate with the first drive gear 7, thereby driving the transmission gear 5 to rotate, so as to control the opening and closing of the valve stem 3 and the valve plate 4. When the electronic components are damaged and the opening and closing of the valve plate 4 cannot be controlled by the drive motor 6, the control can be performed through the turntable 16 on the top of the shell 2. By pressing the turntable 16 down, the sleeve 11 is driven to be pressed down along the trajectory of the rotating shaft 9, and the lifting spring 15 is compressed until the insertion rod 17 is inserted into the inside of the card slot 20, and under the action of the card spring 19, the card block 18 pushes the top of the protrusion 21, and the card block 18 and the protrusion 21 are formed into a card connection state, thereby ensuring the stability of the position of the sleeve 11 after it is pressed down. At this time, due to the downward movement of the sleeve 11, the second drive gear 12 is driven to move downward synchronously and move to the same height as the transmission gear 5, so that the second drive gear 12 and the transmission gear 5 are in meshing state, and then through By rotating the turntable 16, the sleeve 11 is driven to rotate. Since the sleeve 11 and the rotating shaft 9 are limitedly slidably connected through the limit groove 14 and the limit block 10, the rotating shaft 9 is driven to rotate synchronously, thereby ensuring the stability of the sleeve 11 during rotation, so that the second driving gear 12 drives the transmission gear 5 to rotate, thereby realizing the function of manually controlling the opening and closing of the valve plate 4. After the operation is completed, the pressing rod 23 can be pressed to drive the pressing block 22 to move downward, so that the inclined plates 24 on both sides of the bottom of the pressing block 22 and the inclined surface on one side of the top of the top block 25 are squeezed, so that the top block 25 moves in the direction of the protrusion 21, and compresses the reset spring 26, so that the top protrusion of the top block 25 squeezes the clamping block 18, causing it to shrink toward the inside of the plug rod 17, thereby achieving the purpose of releasing the clamping state, finally releasing the pressing of the pressing rod 23, and under the action of the lifting spring 15, the sleeve 11 and its internal and top structures are pushed up, so that the second driving gear 12 is separated from the transmission gear 5.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve electric actuator with good stability, comprising a valve body (1), a sleeve (11) and a second driving gear (12), characterized in that: A shell (2) is fixedly mounted on the top of the valve body (1); a valve stem (3) is movably connected to the center of the inner bottom end of the shell (2) via a sealing bearing; a valve plate (4) is fixedly mounted on one end of the valve stem (3) extending into the interior of the valve body (1); a transmission gear (5) is fixedly mounted on the outer periphery of the top end of the valve stem (3); a rotating shaft (9) is movably connected to the bottom surface of one side of the interior of the shell (2) via a bearing; a sleeve (11) is sleeved on the top end of the rotating shaft (9); a contraction groove (13) is provided inside the sleeve (11); the sleeve (11) is connected to the limit grooves (14) provided on both sides of the interior with the limit grooves (14) provided on both sides of the top end of the rotating shaft (9). The limiting block (10) enables the two to be connected in a limited sliding manner, a second driving gear (12) is fixedly installed on the outer periphery of the bottom end of the sleeve (11), and the second driving gear (12) is staggered with the transmission gear (5). The top end of the sleeve (11) extends to the top outer side of the shell (2) and is slidably connected to the shell (2), a plug rod (17) is provided on the top of the rotating shaft (9), and retractable clamping blocks (18) are provided on both sides of the top end of the plug rod (17), and a clamping groove (20) is opened on the top wall of the contraction groove (13) corresponding to the position of the plug rod (17), and protrusions (21) are provided on both sides of the inside of the clamping groove (20).

2. The electric valve actuator with good stability according to claim 1, characterized in that: A pressure block (22) is slidably arranged at the inner top of the slot (20), a pressure rod (23) is arranged at the top of the pressure block (22), the pressure rod (23) extends to the top outside of the sleeve (11) and is slidably connected thereto, inclined plates (24) are fixedly installed on both sides of the bottom of the pressure block (22), a top block (25) is arranged on the opposite side of the two protrusions (21), a top of the top block (25) is provided with an inclined surface corresponding to one side of the inclined plate (24), a return spring (26) is arranged on one side of the top block (25), and the two ends of the return spring (26) are respectively fixedly connected to the protrusion (21) and the top block (25), and return springs (26) are also arranged on both sides of the pressure block (22).

3. The electric valve actuator with good stability according to claim 1, characterized in that: A driving motor (6) is fixedly mounted on a top wall of a side of the housing (2) away from the sleeve (11), and a first driving gear (7) is provided at an output shaft end of the driving motor (6), and the first driving gear (7) is meshingly connected with the transmission gear (5).

4. The electric valve actuator with good stability according to claim 2, characterized in that: Limiting slide blocks (28) are fixedly arranged on both sides of the top block (25), and limiting sliding grooves (27) are provided on the opposite sides of the two protrusions (21) at positions corresponding to the limiting slide blocks (28), and the limiting slide blocks (28) extend into the interior of the limiting sliding grooves (27) and are slidably connected to the inner walls thereof.

5. The electric valve actuator with good stability according to claim 2, characterized in that: A rotating disk (16) is fixedly mounted on the outer periphery of the top of the sleeve (11), and the top of the pressure rod (23) passes through the middle of the rotating disk (16) and is slidably connected thereto.

6. The electric valve actuator with good stability according to claim 1, characterized in that: A lifting spring (15) is also provided at the inner top of the shrinkage groove (13), and the two ends of the lifting spring (15) are respectively fixedly connected to the top wall of the shrinkage groove (13) and the top of the rotating shaft (9).

7. The electric valve actuator with good stability according to claim 1, characterized in that: A clamping spring (19) is provided inside both sides of the top end of the insertion rod (17), and the two ends of the clamping spring (19) are fixedly connected to the insertion rod (17) and the clamping block (18) respectively.

8. The electric valve actuator with good stability according to claim 1, characterized in that: A controller (8) is provided at the center of the inner top wall of the shell (2), and the controller (8) is fixed to the inner top wall of the shell (2) by means of mounting screws.

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