Non-contact mechanical switch valve used on electric actuator

Abstract

The non-contact mechanical switch valve used on the electric actuator comprises a bottom shell, a cover plate is fixedly installed on the bottom shell, and a waterproof layer is further fixedly installed on the cover plate; a transmission cavity and a control cavity are formed in the bottom shell, and a speed reducer assembly is installed in the transmission cavity. An electric control assembly and a non-contact driving assembly are fixedly mounted in the control cavity; a square opening is formed in the bottom of the transmission cavity, the bottom shell is installed on the valve in a threaded mode, the movable end of a control shaft of the valve is square, and the square end of the control shaft is clamped into the speed reducer assembly. The tool is a magnet column, the tool is attached to the waterproof layer and is coupled with an inner magnet in the non-contact driving assembly, and the tool is rotated to achieve rotation of the inner magnet and achieve transmission connection with the transmission assembly. By means of the non-contact magnetic coupling mode, opening and closing operation of the valve is achieved, the waterproof sealing problem caused by the fact that traditional mechanical transmission needs to be externally led is solved, and the durability and the protection grade of the electric actuator are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve drive, and particularly to a non-contact mechanical switch valve used on an electric actuator. Background Art

[0002] The mechanical switch valves of electric actuators on the existing market mainly adopt a contact operation method. Usually, by leading out the transmission mechanism externally and using an external tool (such as a hexagonal tool) to rotate the transmission mechanism to achieve the opening and closing of the valve. However, this design has problems with sealing and waterproofing. Since the transmission mechanism must extend out of the housing, this external leading design will cause the waterproof performance to decline, increasing the risk of using the device in a harsh environment and shortening the service life of the device.

[0003] Therefore, there is an urgent need to design a non-contact mechanical switch valve used on an electric actuator that can solve the waterproof problem without affecting the sealing performance, and improve the reliability and service life of the device. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-contact mechanical switch valve used on an electric actuator to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention provides a non-contact mechanical switch valve used on an electric actuator, including: A bottom shell, on which a cover plate is fixedly installed, and a waterproof layer is also fixedly installed on the cover plate; A transmission cavity and a control cavity are opened in the bottom shell. A speed reducer assembly is installed in the transmission cavity. The transmission cavity is of a cylindrical structure, and an annular internal tooth is provided on the inner wall of the transmission cavity; An electric control component and a non-contact drive component are fixedly installed in the control cavity; A square opening is provided at the bottom of the transmission cavity. The bottom shell is threadedly installed on the valve. The movable end of the control shaft of the valve is square, and the square end of the control shaft is clamped in the speed reducer assembly; A tool, the tool is a magnet column, the tool is attached to the waterproof layer and is coupled with the inner magnet in the non-contact drive component, and rotating the tool realizes the rotation of the inner magnet, so as to realize the transmission connection with the transmission component.

[0006] An installation frame is further provided between the bottom shell and the cover plate. The installation frame is threadedly installed on the top surface of the bottom shell. Two through holes are provided on the installation frame for installing the non-contact drive component and the speed reducer component.

[0007] The speed reducer assembly includes a support chassis, a square groove is provided at the bottom of the support chassis, and the square end of the control shaft is snap-fitted in the square groove; A support column is fixedly installed at the center of the top surface of the support chassis; three first rotating shafts are also circumferentially and equidistantly arranged on the top surface of the support chassis, and a first planet gear is installed on each of the first rotating shafts; Two planet carriers are also sleeved on the support column; the two planet carriers are arranged in a staggered manner, and a support protrusion is formed at the center of the bottom surface of each planet carrier, and the support protrusion abuts against the planet carrier / support chassis; Three second rotating shafts are also circumferentially and equidistantly arranged at the end of the top surface of the planet carrier; a second planet gear is installed on each of the second rotating shafts; the first planet gear and the second planet gear are both meshed with the annular internal teeth; A top plate is also sleeved on the support column, and external teeth are formed on the outer wall of the top plate, and the external teeth are in transmission connection with the non-contact driving assembly and the electric control assembly.

[0008] The first rotating shafts and the second rotating shafts between adjacent planet carriers and between adjacent planet carriers and the support chassis are arranged in a staggered manner, and the misalignment angle is 60 degrees.

[0009] An end cover is fixedly installed at the top end of the support column, and the end cover passes through the through hole and penetrates the cover plate; an arrow mark is formed on the end cover for indicating the opening and closing state of the valve.

[0010] A Hall switch is also fixedly installed on the mounting frame, and the Hall switch is used to detect the opening condition of the valve.

[0011] The non-contact driving assembly includes a hollow column, and a positioning groove is formed at the bottom of the control cavity; a positioning protrusion is formed at the center of the bottom of the hollow column, and the hollow column is rotatably installed on the positioning groove through the positioning protrusion; transmission teeth are formed at the bottom end of the outer wall of the hollow column, and the transmission teeth are meshed with the external teeth of the top plate for transmission; A plurality of the inner magnets are fixedly installed in the hollow column; The hollow column passes through the through hole and penetrates the cover plate.

[0012] The electric control assembly includes a DC motor; the DC motor is fixedly installed at the bottom of the control cavity, and the DC motor is also electrically connected to a control board, and the control board is fixedly installed on the mounting frame; and the control board is placed in the control cavity; the output end of the DC motor penetrates the mounting frame and is fixedly installed with a driving gear; the driving gear is meshed with an intermediate gear; the intermediate gear is simultaneously meshed with the external teeth of the top plate.

[0013] The transfer gear is mounted on the mounting frame through a rotating shaft. One end of the rotating shaft is also mounted on a mounting seat. The mounting seat is placed above the mounting frame, and a connecting protrusion is formed on one side of the mounting seat close to the hollow column. The connecting protrusion is threadedly connected to the mounting frame.

[0014] The present invention discloses the following technical effects: Through a non-contact magnetic coupling method, the present invention realizes the opening and closing operation of the valve, solves the waterproof sealing problem caused by the need for external lead-in in traditional mechanical transmission, improves the durability and protection level of the electric actuator, enhances the reliability of the equipment in harsh environments, and extends the service life. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the external structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the bottom shell of the present invention with a mounting frame; Figure 3 It is a schematic diagram of the structure inside the bottom shell of the present invention with a mounting frame but without a mounting seat; Figure 4 It is a schematic diagram of the structure inside the bottom shell of the present invention without a mounting frame; Figure 5 It is a schematic diagram of the reducer assembly of the present invention; Figure 6 It is a bottom view of the support chassis of the present invention; Figure 7 It is a top view of the support chassis of the present invention; Figure 8 It is a schematic diagram of the planet carrier structure of the present invention; Figure 9 It is a schematic diagram of the hollow column structure of the present invention; Figure 10 It is a side view of the hollow column structure of the present invention; Among them, 1. bottom shell; 2. cover plate; 3. waterproof layer; 4. mounting frame; 5. annular internal teeth; 6. end cover; 7. Hall switch; 11. DC motor; 12. control board; 13. driving gear; 14. intermediate gear; 15. mounting seat; 16. connecting protrusion; 31. internal magnet; 32. hollow column; 33. positioning groove; 34. positioning protrusion; 35. transmission tooth; 51. support chassis; 52. support column; 53. first rotating shaft; 54. first planet gear; 55. planet carrier; 56. second rotating shaft; 57. second planet gear; 58. top plate; 59. external teeth. Specific embodiments

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The present invention provides a non-contact mechanical switch valve used in an electric actuator, including: A bottom shell 1, on which a cover plate 2 is fixedly installed, and a waterproof layer 3 is also fixedly installed on the cover plate 2; A transmission cavity and a control cavity are opened in the bottom shell 1, and a speed reducer assembly is installed in the transmission cavity; the transmission cavity is a cylindrical structure, and annular internal teeth 5 are opened on the inner wall of the transmission cavity; An electric control component and a non-contact driving component are fixedly installed in the control cavity; A square opening is opened at the bottom of the transmission cavity, the bottom shell 1 is threadedly installed on the valve, the movable end of the control shaft of the valve is square, and the square end of the control shaft is clamped in the speed reducer assembly; A tool, the tool is a magnet column, the tool is attached to the waterproof layer 3 and coupled with the internal magnet 31 in the non-contact driving component, and rotating the tool realizes the rotation of the internal magnet 31, so as to realize the transmission connection with the transmission component.

[0020] An installation frame 4 is also provided between the bottom shell 1 and the cover plate 2, and the installation frame 4 is threadedly installed on the top surface of the bottom shell 1; two through holes are opened on the installation frame 4 for installing the non-contact driving component and the speed reducer assembly.

[0021] The speed reducer assembly includes a support chassis 51, a square groove is opened at the bottom of the support chassis 51, and the square end of the control shaft is clamped and installed in the square groove; A support column 52 is fixedly installed at the center of the top surface of the support chassis 51; three first rotating shafts 53 are also arranged at equal intervals in the circumferential direction on the top surface of the support chassis 51, and a first planetary gear 54 is installed on each first rotating shaft 53; Two planet carriers 55 are sleeved on the support column 52; the two planet carriers 55 are staggered, and a support protrusion is formed at the center of the bottom surface of each planet carrier 55, and the support protrusion abuts against the planet carrier 55 / support chassis 51; The top end of the planet carrier 55 is also provided with three second rotating shafts 56 at equal intervals in the circumferential direction; a second planetary gear 57 is mounted on each second rotating shaft 56; the first planetary gear 54 and the second planetary gear 57 are both meshed with the annular internal gear 5; A top plate 58 is mounted on the support column 52 , and external teeth 59 are formed on the outer wall of the top plate 58 . The external teeth 59 are transmission-connected to the contactless drive assembly and the electric control assembly.

[0022] The first rotation shafts 53 and the second rotation shafts 56 between adjacent planet carriers 55 and between adjacent planet carriers 55 and the supporting chassis 51 are staggered, and the staggered angle is 60 degrees.

[0023] An end cover 6 is fixedly mounted on the top of the support column 52 , and the end cover passes through the through hole and penetrates the cover plate 2 ; an arrow mark is formed on the end cover 6 to indicate the open and closed state of the valve.

[0024] A Hall switch 7 is also fixedly mounted on the mounting frame 4, and the Hall switch 7 is used to detect the opening status of the valve.

[0025] The contactless drive assembly includes a hollow column 32, a positioning groove 33 is formed at the bottom of the control cavity; a positioning protrusion 34 is formed at the center of the bottom of the hollow column 32, and the hollow column 32 is rotatably mounted on the positioning groove 33 through the positioning protrusion 34; a transmission tooth 35 is formed at the bottom end of the outer wall of the hollow column 32, and the transmission tooth 35 is meshed with the outer teeth 59 of the top plate 58 for transmission; Several inner magnets 31 are fixedly installed in the hollow column 32; The hollow column 32 passes through the through hole and penetrates the cover plate 2 .

[0026] The electric control component includes a DC motor 11; the DC motor 11 is fixedly installed at the bottom of the control cavity, and the DC motor 11 is also electrically connected to a control board 12, and the control board 12 is fixedly installed on the mounting frame 4; and the control board 12 is placed in the control cavity; the output end of the DC motor 11 passes through the mounting frame 4 and is fixedly installed with a driving gear 13; the driving gear 13 is meshed with the transfer gear 14; the transfer gear 14 is also meshed with the outer teeth 59 of the top plate 58.

[0027] The transfer gear 14 is installed on the mounting bracket 4 through a rotating shaft, and one end of the rotating shaft is also installed on the mounting seat 15. The mounting seat 15 is placed above the mounting bracket 4, and a connecting protrusion 16 is formed on one side of the mounting seat 15 close to the hollow column 32; the connecting protrusion 16 is threadedly connected to the mounting bracket 4.

[0028] In an embodiment of the present invention, the square groove at the bottom of the bottom shell 1 is inserted into the square end of the control shaft at the top of the valve, and then fixedly installed on the valve through threads.

[0029] In an embodiment of the present invention, the cover plate 2 is a plane, on which the inner magnet 31 and the end cover 6 are exposed. A waterproof layer 3 is covered outside the cover plate 2; when it is necessary to control the opening of the valve through the non-contact drive assembly, by attaching the tool to the waterproof layer 3 and placing it at the inner magnet 31, it is adsorbed to the inner magnet 31; rotating the tool to control the rotation drive of the hollow column 32.

[0030] Further, when the tool is adsorbed to the inner magnet 31, the positioning protrusion 34 is always placed in the positioning groove 33.

[0031] Further, the waterproof layer 3 is preferably a plastic transparent cover plate, which has good waterproof effect and can directly observe the arrow direction on the end cover 6 through the naked eye to determine the opening and closing status of the valve.

[0032] In an embodiment of the present invention, during the rotation of the hollow column 32, the transmission gear 35 meshes with the external teeth 59 of the top plate 58. The top plate 58 drives the support column 52 to rotate. After the support column 52 starts to rotate, it will drive the second planetary gears 57 on the two second planetary carriers 55 and the first planetary gear 54 on the support chassis 51 to mesh with the annular internal teeth 5 of the transmission cavity in sequence to achieve multi-stage deceleration; the rotation of the support chassis 51 will drive the rotation of the control shaft at the top of the valve, thereby realizing the opening and closing control of the valve.

[0033] In an embodiment of the present invention, the first planetary gear 54 and the second planetary gear 57 have different heights and the same number of teeth.

[0034] Further, the height of the first planetary gear 54 is 10 mm, and the height of the second planetary gear 57 is 6 mm.

[0035] In an embodiment of the present invention, the Hall switch 7 is also meshed and driven with the detection gear installed at the top end of the support column 52 through a small gear. The Hall switch 7 is used to detect the rotation angle of the end cover 6; and the Hall switch 7 is electrically connected to the control board 12. If the end cover 6 rotates in place, the opening and closing of the valve can be remotely determined through a mobile phone.

[0036] In an embodiment of the present invention, the device is further provided with an electric control component. The electric control component can directly control the control board 12 through a mobile phone to start the DC motor 11. Then, the driving gear 13 at the output end of the DC motor 11 meshes with the transfer gear 14; the transfer gear 14 meshes with the external teeth 59 of the top plate 58, and the top plate 58 drives the support column 52 to rotate. After the support column 52 starts to rotate, it will successively drive the second planetary gears 57 on the two second planetary carriers 55 and the first planetary gear 54 on the support chassis 51 to mesh with the annular internal teeth 5 of the transmission cavity, realizing multi-stage speed reduction; the rotation of the support chassis 51 will drive the rotation of the control shaft at the top of the valve, thereby realizing the opening and closing control of the valve.

[0037] In an embodiment of the present invention, there is a limit between the connecting protrusion at one end of the mounting seat 16 on the transfer gear 14 and the hollow column 32, preventing the hollow column 32 from having an excessive range of movement.

[0038] In an embodiment of the present invention, the electric control component and the contactless drive component are two driving methods, which are used according to actual needs.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] The above-described embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A non-contact mechanical switch valve used on an electric actuator, characterized in that: include: A bottom shell (1), a cover plate (2) being fixedly mounted on the bottom shell (1), and a waterproof layer (3) being fixedly mounted on the cover plate (2); The bottom shell (1) is provided with a transmission chamber and a control chamber, and a reducer assembly is installed in the transmission chamber; the transmission chamber is a cylindrical structure, and an annular internal tooth (5) is provided on the inner wall of the transmission chamber; An electric control component and a contactless drive component are fixedly installed in the control cavity; The bottom of the transmission cavity is provided with a square opening, the bottom shell (1) is threadedly mounted on the valve, the movable end of the control shaft of the valve is square, and the square end of the control shaft is clamped in the reducer assembly; The tool is a magnet column, the tool is attached to the waterproof layer (3) and coupled with the inner magnet (31) in the contactless drive component, and the rotating tool realizes the rotation of the inner magnet (31) to realize the transmission connection with the transmission component.

2. A non-contact mechanical switch valve used on an electric actuator according to claim 1, characterized in that: A mounting frame (4) is also provided between the bottom shell (1) and the cover plate (2), and the mounting frame (4) is threadedly mounted on the top surface of the bottom shell (1); two through holes are provided on the mounting frame (4) for mounting the contactless drive assembly and the reducer assembly.

3. A non-contact mechanical switch valve for an electric actuator according to claim 2, characterized in that: The reducer assembly comprises a supporting chassis (51), the bottom of the supporting chassis (51) is provided with a square groove, and the square end of the control shaft is clamped and installed in the square groove; A support column (52) is fixedly mounted at the center of the top surface of the support chassis (51); three first rotating shafts (53) are also arranged at equal intervals in the circumferential direction on the top surface of the support chassis (51), and a first planetary gear (54) is mounted on each of the first rotating shafts (53); Two planet carriers (55) are also sleeved on the support column (52); the two planet carriers (55) are staggered, and a support protrusion is formed at the center of the bottom surface of each planet carrier (55), and the support protrusion abuts against the planet carrier (55) / support chassis (51); The top end of the planet carrier (55) is also provided with three second rotating shafts (56) at equal intervals in the circumferential direction; a second planetary gear (57) is mounted on each of the second rotating shafts (56); the first planetary gear (54) and the second planetary gear (57) are both meshed with the annular internal gear (5); The support column (52) is provided with a top plate (58) on its upper side, and the outer wall of the top plate (58) is formed with external teeth (59), and the external teeth (59) are drivingly connected to the contactless drive component and the electric control component.

4. A non-contact mechanical switch valve for an electric actuator according to claim 3, characterized in that: The first rotation axes (53) and the second rotation axes (56) between adjacent planet carriers (55) and between adjacent planet carriers (55) and the supporting chassis (51) are arranged in a staggered manner, with a staggered angle of 60 degrees.

5. A non-contact mechanical switch valve for an electric actuator according to claim 3, characterized in that: An end cover (6) is fixedly mounted on the top of the support column (52), and the end cover passes through the through hole and penetrates the cover plate (2); an arrow mark is formed on the end cover (6) for indicating the open or closed state of the valve.

6. A non-contact mechanical switch valve for an electric actuator according to claim 1, characterized in that: A Hall switch (7) is also fixedly mounted on the mounting frame (4), and the Hall switch (7) is used to detect the opening status of the valve.

7. A non-contact mechanical switch valve for an electric actuator according to claim 3, characterized in that: The contactless drive assembly comprises a hollow column (32), a positioning groove (33) being formed at the bottom of the control cavity; a positioning protrusion (34) being formed at the center of the bottom of the hollow column (32), and the hollow column (32) being rotatably mounted on the positioning groove (33) via the positioning protrusion (34); a transmission tooth (35) being formed at the bottom end of the outer wall of the hollow column (32), and the transmission tooth (35) being meshed with the outer teeth (59) of the top plate (58) for transmission; A plurality of inner magnets (31) are fixedly mounted in the hollow column (32); The hollow column (32) passes through the through hole and penetrates the cover plate (2).

8. A non-contact mechanical switch valve used on an electric actuator according to claim 7, characterized in that: The electric control component comprises a DC motor (11); the DC motor (11) is fixedly mounted at the bottom of the control cavity, the DC motor (11) is also electrically connected to a control board (12), the control board (12) is fixedly mounted on the mounting frame (4); and the control board (12) is placed in the control cavity; the output end of the DC motor (11) passes through the mounting frame (4) and is fixedly mounted with a driving gear (13); the driving gear (13) is meshed with a transfer gear (14); and the transfer gear (14) is simultaneously meshed with an outer tooth (59) of the top plate (58).

9. A non-contact mechanical switch valve used on an electric actuator according to claim 8, characterized in that: The transfer gear (14) is mounted on the mounting frame (4) via a rotating shaft, one end of the rotating shaft is also mounted on a mounting seat (15), the mounting seat (15) is placed above the mounting frame (4), and a connecting protrusion (16) is formed on a side of the mounting seat (15) close to the hollow column (32), and the connecting protrusion (16) is threadedly connected to the mounting frame (4).

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