Automatic and manual switching electric actuator

Abstract

The invention provides an automatic and manual switching electric actuator which comprises an actuator main body and a gear switcher arranged on one side of the actuator main body, a shell is arranged at the bottom of the actuator main body, a detection assembly is arranged in the shell, a top cover is fixedly installed between the actuator main body and the shell, and the gear switcher is arranged on one side of the actuator main body. The detection assembly comprises a rotating rod rotationally arranged on the inner wall of the shell and the inner wall of the top cover, a lead screw is fixedly connected to the bottom of the rotating rod, a lifting block is in threaded connection with the lead screw, and fixing rods are fixedly connected to the two sides of the lifting block correspondingly. A limiting block is fixedly connected to one side of the fixing rod, a pressure sensor is rotationally arranged at the bottom end of the lead screw, and the lead screw is sleeved with a spring. The automatic and manual switching electric actuator provided by the invention has the advantage that the opening and closing degree of the valve can be known so as to ensure accurate manual adjustment operation.

Description

Technical Field

[0001] The present invention relates to the technical field of electric actuators, and in particular to an automatic-manual switching electric actuator. Background Art

[0002] Valve electric actuators refer to machines that use electricity as the main energy source to drive valves. Because they are precision electrical components, they generally need to have certain explosion-proof and protection levels (waterproof and dustproof). In the event of a power failure or emergency, it is necessary to switch to manual mode and manually rotate the valve to open or close it to achieve the purpose of resetting.

[0003] A patent document with publication number CN218883125U discloses a valve electric actuator, including an electric actuator body, a connection box and a connection seat, a connection box is arranged at the top of the electric actuator body, a display is arranged at the top of the connection box, a protective structure is arranged on one side of the display, a connection seat is arranged at the bottom of the electric actuator body, a valve body is arranged at the bottom of the connection seat, a valve stem is arranged inside the valve body, a fixed disk is arranged at the top of the valve stem, a mounting structure is arranged inside the fixed disk, and the mounting structure includes a mounting bolt, a through groove and a mounting groove, and the through groove is arranged inside the fixed disk. In the process of implementing the technical solution, the inventor found that there are at least the following problems in the prior art:

[0004] In the prior art, if the power is off, manual operation cannot intuitively understand the degree of valve opening and closing, and manual operation will apply a large force and cannot control the specific degree of rotation. Over- or under-rotating the actuator during use may cause damage to the actuator or the valve. In addition, there is no way to accurately monitor and control the degree of valve opening, which affects the safety and reliability of the system. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic manual switching electric actuator, comprising an actuator body, and a gear switch arranged on one side of the actuator body, a shell is arranged at the bottom of the actuator body, a detection component is arranged inside the shell, a top cover is fixedly installed between the actuator body and the shell, a driver is arranged on the other side of the actuator body, a base is fixedly connected to the bottom of the shell, and a turntable is arranged on the top of the actuator body.

[0006] Preferably, the detection component includes a rotating rod rotatably arranged on the inner wall of the shell and the top cover, the bottom of the rotating rod is fixedly connected to a screw rod, a lifting block is screwed on the screw rod, both sides of the lifting block are fixedly connected to fixed rods, one side of the fixed rod is fixedly connected to a limiting block, a pressure sensor is rotatably arranged on the bottom end of the screw rod, and a spring is sleeved on the outside of the screw rod.

[0007] Preferably, a fixing plate is fixedly connected to one side of the top cover, and a pair of moving blocks are sleeved on the outer side of the fixing plate.

[0008] Preferably, a fixed block is fixedly connected to the top of the moving block, a first fixed ring is fixedly connected to the top of the fixed block, and a first connecting plate is fixedly installed between two of the first fixed rings.

[0009] Preferably, a second fixing ring is arranged on the top of the first fixing ring, and a second connecting plate is fixedly installed between the two second fixing rings.

[0010] Preferably, both sides of the first fixing ring and the second fixing ring are fixedly connected with mounting blocks, and fixing bolts are arranged inside the mounting blocks.

[0011] Preferably, a positioning bolt is threadedly connected to one side of the moving block, and one end of the positioning bolt abuts against one side of the fixing plate.

[0012] Preferably, one side of the fixing plate is fixedly connected to a limiting plate.

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

[0014] When the actuator body of this automatic-manual switching electric actuator encounters a fault and needs to be reset, the gear switch is used to switch to the manual mode, and then the actuator body is manually operated through the turntable to achieve the purpose of manual opening and closing. At this time, the opening and closing degree of the valve can be understood through the detection component inside the shell to ensure precise manual adjustment operation.

[0015] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures particularly pointed out in the written description and the drawings.

[0016] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A structural schematic diagram of a preferred embodiment of the automatic-manual switching electric actuator provided by the present invention;

[0019] Figure 2 It is a structural schematic diagram of the detection component shown in the present invention;

[0020] Figure 3 It is a structural schematic diagram of the top cover and the fixing plate shown in the present invention;

[0021] Figure 4 It is a schematic structural diagram of the first fixing ring and the second fixing ring shown in the present invention.

[0022] Numbers in the figure: 1. Actuator body; 101. Gear switch; 2. Housing; 3. Detection assembly; 31. Turntable; 32. Screw rod; 33. Lifting block; 34. Fixed rod; 35. Limit block; 36. Pressure sensor; 37. Spring; 4. Top cover; 5. Driver; 6. Base; 7. Turntable; 8. Fixed plate; 9. Moving block; 10. Fixed block; 11. First fixing ring; 12. First connecting plate; 13. Second fixing ring; 14. Second connecting plate; 15. Mounting block; 16. Fixing bolt; 17. Positioning bolt; 18. Limit plate. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] See also Figure 1-Figure 4An automatic manual switching electric actuator includes an actuator body 1 and a gear switch 101 arranged on one side of the actuator body 1, a shell 2 is arranged at the bottom of the actuator body 1, a detection component 3 is arranged inside the shell 2, a top cover 4 is fixedly installed between the actuator body 1 and the shell 2, a driver 5 is arranged on the other side of the actuator body 1, a base 6 is fixedly connected to the bottom of the shell 2, and a turntable 7 is arranged on the top of the actuator body 1.

[0028] When the actuator body 1 is in normal use, the driver 5 will first drive the reducer to move, thereby driving the actuator body 1 to start moving. When the actuator body 1 encounters a fault and needs to be reset, the gear switch 101 is used to switch to the manual mode, and then the actuator body 1 is manually operated through the turntable 7 to achieve the purpose of manual opening and closing. At this time, the opening and closing degree of the valve can be understood through the detection component 3 inside the shell 2 to ensure manual precise adjustment operation.

[0029] In the specific implementation process, Figure 2 As shown, the detection component 3 includes a rotating rod 31 rotatably arranged on the inner wall of the shell 2 and the top cover 4, a screw rod 32 is fixedly connected to the bottom of the rotating rod 31, a lifting block 33 is screwed on the screw rod 32, both sides of the lifting block 33 are fixedly connected to fixed rods 34, one side of the fixed rod 34 is fixedly connected to a limiting block 35, a pressure sensor 36 is rotatably arranged at the bottom end of the screw rod 32, and a spring 37 is sleeved on the outer side of the screw rod 32.

[0030] When the turntable 7 rotates, it drives the rotating rod 31 to rotate, and the rotating rod 31 drives the screw rod 32 to rotate. When the screw rod 32 rotates, it drives the lifting block 33 to descend. The lifting block 33 squeezes the spring 37, so that the spring 37 transmits the force it receives to the pressure sensor 36. The pressure sensor 36 feeds back the change in pressure to detect the opening and closing degree of the valve. When the lifting block 33 is lifted or lowered, the fixed rod 34 slides on the inner wall of the shell 2, and the lifting block 33 is guided and limited to improve the stability of the lifting block 33 when it is lifted or lowered. The fixed rod 34 is limited by the limit block 35 to improve the stability of the fixed rod 34 when it moves.

[0031] A fixing plate 8 is fixedly connected to one side of the top cover 4 , a pair of moving blocks 9 are sleeved on the outer side of the fixing plate 8 , the fixing plate 8 is bolted to the outer side of the top cover 4 , and the moving blocks 9 are slidably sleeved on the fixing plate 8 .

[0032] A fixed block 10 is fixedly connected to the top of the moving block 9 , a first fixed ring 11 is fixedly connected to the top of the fixed block 10 , and a first connecting plate 12 is fixedly installed between the two first fixed rings 11 .

[0033] A second fixing ring 13 is disposed on the top of the first fixing ring 11 , and a second connecting plate 14 is fixedly installed between the two second fixing rings 13 .

[0034] Mounting blocks 15 are fixedly connected to both sides of the first fixing ring 11 and the second fixing ring 13 , and fixing bolts 16 are arranged inside the mounting blocks 15 .

[0035] The moving block 9 drives the first fixing ring 11 to move outside the driver 5 through the fixing block 10, and the two first fixing rings 11 are connected and fixed by the first connecting plate 12. After the first fixing ring 11 is moved to a suitable position, it supports the driver 5. The second connecting plate 14 connects and fixes the two second fixing rings 13. The second fixing ring 13 is installed on the top of the first fixing ring 11, and the first fixing ring 11 and the second fixing ring 13 are fixed by the fixing bolts 16 in the mounting block 15, so as to fix the driver 5, improve the stability of the driver 5, and play a reinforcing role.

[0036] A positioning bolt 17 is screwed on one side of the moving block 9 , and one end of the positioning bolt 17 abuts against one side of the fixing plate 8 . By tightening the positioning bolt 17 , the moving block 9 can be positioned conveniently, thereby fixing the positions of the first fixing ring 11 and the second fixing ring 13 .

[0037] One side of the fixed plate 8 is fixedly connected to a limiting plate 18 , and the moving block 9 is limited by the limiting plate 18 .

[0038] When in use, when the actuator body 1 is in normal use, the driver 5 will first drive the reducer to move, thereby driving the actuator body 1 to start moving. When the actuator body 1 encounters a fault and needs to be reset, the gear switch 101 is used to switch to the manual mode, and then the actuator body 1 is manually operated through the turntable 7 to achieve the purpose of manual opening and closing. When the turntable 7 rotates, it drives the rotating rod 31 to rotate, and the rotating rod 31 drives the screw rod 32 to rotate. When the screw rod 32 rotates, it drives the lifting block 33 to descend. The lifting block 33 squeezes the spring 37, so that the spring 37 transmits the force it receives to the pressure sensor 36, and the pressure sensor 36 feeds back the change in pressure. Thereby, the opening and closing degree of the valve can be detected to ensure precise manual adjustment operation. The moving block 9 drives the first fixing ring 11 to move outside the driver 5 through the fixing block 10, and the two first fixing rings 11 are connected and fixed by the first connecting plate 12. After the first fixing ring 11 moves to a suitable position, it supports the driver 5. The second connecting plate 14 connects and fixes the two second fixing rings 13. The second fixing ring 13 is installed on the top of the first fixing ring 11, and the first fixing ring 11 and the second fixing ring 13 are fixed by the fixing bolts 16 in the mounting block 15, so as to fix the driver 5, improve the stability of the driver 5, and play a reinforcing role.

[0039] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0040] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0041] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic-manual switching electric actuator, characterized in that: The invention comprises an actuator body (1), and a gear switch (101) arranged on one side of the actuator body (1); a shell (2) is arranged at the bottom of the actuator body (1); a detection component (3) is arranged inside the shell (2); a top cover (4) is fixedly installed between the actuator body (1) and the shell (2); a driver (5) is arranged on the other side of the actuator body (1); a base (6) is fixedly connected to the bottom of the shell (2); and a turntable (7) is arranged on the top of the actuator body (1).

2. The automatic-manual switching electric actuator according to claim 1, characterized in that: The detection assembly (3) comprises a rotating rod (31) rotatably arranged on the inner wall of the housing (2) and the top cover (4); a screw rod (32) is fixedly connected to the bottom of the rotating rod (31); a lifting block (33) is screwed onto the screw rod (32); both sides of the lifting block (33) are fixedly connected to fixed rods (34); one side of the fixed rod (34) is fixedly connected to a limit block (35); a pressure sensor (36) is rotatably arranged at the bottom end of the screw rod (32); and a spring (37) is sleeved on the outside of the screw rod (32).

3. The automatic-manual switching electric actuator according to claim 1, characterized in that: A fixing plate (8) is fixedly connected to one side of the top cover (4), and a pair of moving blocks (9) are sleeved on the outer side of the fixing plate (8).

4. The automatic-manual switching electric actuator according to claim 3, characterized in that: The top of the moving block (9) is fixedly connected to a fixed block (10), the top of the fixed block (10) is fixedly connected to a first fixed ring (11), and a first connecting plate (12) is fixedly installed between the two first fixed rings (11).

5. The automatic-manual switching electric actuator according to claim 4, characterized in that: A second fixing ring (13) is arranged on the top of the first fixing ring (11), and a second connecting plate (14) is fixedly installed between the two second fixing rings (13).

6. The automatic-manual switching electric actuator according to claim 5, characterized in that: Both sides of the first fixing ring (11) and the second fixing ring (13) are fixedly connected with mounting blocks (15), and fixing bolts (16) are arranged inside the mounting blocks (15).

7. The automatic-manual switching electric actuator according to claim 4, characterized in that: A positioning bolt (17) is threadedly connected to one side of the moving block (9), and one end of the positioning bolt (17) abuts against one side of the fixing plate (8).

8. The automatic-manual switching electric actuator according to claim 3, characterized in that: One side of the fixing plate (8) is fixedly connected to a limiting plate (18).

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