Connecting structure of electric actuator for valve
By introducing microswitches and speed-increasing gear sets into electric actuators for valves, the problem of uncontrolled rotation of handwheels during power outages and restorations has been solved, resulting in increased safety and lifespan, as well as improved operational efficiency.
Patent Information
- Application Number
- CN202520399459.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-07
AI Technical Summary
The existing connection structure of electric actuators for valves may cause the handwheel to rotate uncontrollably when power is suddenly restored after a power outage, resulting in damage to the hand-electric switching mechanism and posing a safety hazard.
A connection structure for an electric actuator for valves is designed, including a micro switch, a sliding slide rod, and a locking assembly. This ensures that the actuator is de-energized during manual operation and improves the rotation efficiency and stability of the handwheel through a speed-increasing gear set, while avoiding direct connection between the handwheel and the worm gear assembly.
It improves operational safety, extends the service life of the actuator, reduces the number of times components such as handwheels are used and the risk of damage, and enhances operational stability and efficiency.
Smart Images
Figure CN223690462U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric actuator technical field, especially valve electric actuator's connecting structure. BACKGROUND
[0002] The connecting structure of the valve electric actuator is the key part to ensure its normal operation and effective control. By adopting reasonable connection mode, optimizing connection structure design and strengthening quality control and maintenance management, the reliability and performance of the connecting structure can be further improved, providing strong guarantee for the normal operation of the valve electric actuator.
[0003] The connecting structure of the valve electric actuator in the prior art usually connects the hand wheel and the worm assembly directly, which causes the manual components of the valve to run synchronously when the valve works automatically under the drive of the electric actuator. In the case of power failure, if power suddenly comes when the valve is driven by the hand wheel, the motor assembly may directly drive the worm assembly to run, causing the hand wheel to rotate uncontrollably. The artificial rotation of the motor may conflict, which may cause the hand and electric switching mechanism to be easily damaged, and also poses a threat to the safety of the operator.
[0004] Therefore, a connecting structure of a valve electric actuator is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] To make up for the deficiencies of the prior art, in the case of power failure, if power suddenly comes when the valve is driven by the hand wheel, the motor assembly may directly drive the worm assembly to run, causing the hand wheel to rotate uncontrollably. The artificial rotation of the motor may conflict, which may cause the hand and electric switching mechanism to be easily damaged, and also poses a threat to the safety of the operator. A connecting structure of a valve electric actuator is proposed.
[0006] The utility model discloses a technical scheme that solves its technical problem is adopted: a valve electric actuator's connecting structure, including the connecting box, the bottom fixed mounting of connecting box has the box, the one side fixed mounting of box has the cover, the one side fixed mounting of cover has motor assembly, the inside fixed mounting of box has the stroke transmission assembly, the stroke transmission assembly includes torque rotation subassembly, worm assembly and transmission shaft, the outside installation of worm assembly has output shaft subassembly, the one side fixed mounting of box outer surface away from motor assembly has manual shell subassembly, the outside sliding connection of manual shell subassembly has slide, the one end fixed connection of slide extending out manual shell subassembly outside has hand wheel, the manual shell subassembly includes metal shell, the inside fixed connection of metal shell has the gear ring, the middle part sliding connection of gear ring has support, the one side fixed connection of support has push rod, the inside fixed mounting of box has micro -switch, the one side fixed connection of micro -switch has elastic sheet, the one side of elastic sheet's end is located micro -switch, the position of push rod is opposite the position of elastic sheet.
[0007] Preferably, the inside of the gear ring is fixedly connected with an elastic expansion assembly, the elastic expansion assembly includes a spring and a telescopic rod, and the two ends of the spring and the telescopic rod are fixedly connected with the opposite surfaces of the gear ring and the support respectively.
[0008] Preferably, a locking assembly is fixedly installed at the position of the outer wall of the metal shell away from the box, the locking assembly includes a pull ring, one end of the pull ring fixedly connected with an elastic lock catch, the other end of the elastic lock catch away from the pull ring penetrates into the inside of the metal shell, and a locking groove is formed in the outer surface of the slide.
[0009] Preferably, the elastic lock catch includes a spring and a bolt, the two ends of the spring are fixedly connected with one side of the pull ring and the outer wall of the metal shell respectively, one end of the bolt is fixedly connected with one side of the pull ring close to the spring, and the size and shape of the inner wall of the locking groove are matched with the size and shape of the outer wall of the other end of the bolt penetrating into the inside of the metal shell.
[0010] Preferably, one end of the slide inside the metal shell is fixedly connected with a fixed plate, the edge of the other side of the fixed plate away from the slide is rotatably connected with a planetary gear, the outer wall of the planetary gear is meshingly connected with the inner wall of the gear ring, the middle part of the other end of the fixed plate away from the slide is rotatably connected with a sun gear, the outer wall of the sun gear is meshingly connected with the outer wall of the planetary gear, and the outside of the sun gear is rotatably connected with the support.
[0011] Preferably, the edge of the other side of the sun gear away from the fixed plate is fixedly connected with a limit pawl, and one end of the transmission shaft close to the sun gear is fixedly connected with a worm pin.
[0012] Preferably, one side of the box is provided with a rotating groove, the size and shape of the inner wall of the rotating groove are matched with the size and shape of the outer wall of the limiting pawl, and when the limiting pawl is placed on the inner wall of the rotating groove, the worm pin is just located in the inside of the limiting pawl, and the push rod is just pressed on the elastic sheet.
[0013] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model relative to the prior art is:
[0014] 1. The utility model provides a kind of connection structure of electric actuator for valve, by setting microswitch, when manually operating valve actuator, push rod is directly pressed on elastic sheet, and then make elastic sheet press microswitch, and then ensure that actuator is powered off, can improve the safety of operating hand wheel, avoid sudden power, and the electric component of actuator works, so that hand wheel and other components are suddenly stressed, and then lead to the problem that hand switch mechanism is easily damaged, and then play the effect of prolonging the service life of actuator and improving operating safety.
[0015] 2. The utility model provides a kind of connection structure of electric actuator for valve, by setting slidable slide bar, so that hand wheel and worm assembly are not in direct connection, and then when motor drives actuator, hand wheel and manual component no longer rotate in coordination, and then reduce the working frequency and workload of hand wheel and other components, and then can play the effect of prolonging its service life. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the overall structure schematic diagram of the utility model;
[0017] Figure 2 It is the box cross section structure schematic diagram of the utility model;
[0018] Figure 3 It is the overall structure cross section schematic diagram of the utility model;
[0019] Figure 4 It is the manual shell assembly structure schematic diagram of the utility model;
[0020] Figure 5 It is the box internal structure schematic diagram of the utility model.
[0021] In the figure: 1, connecting box; 2, cover; 3, box; 4, output shaft assembly; 5, stroke transmission assembly; 6, motor assembly; 7, worm assembly; 8, torque rotation assembly; 9, manual housing assembly; 91, metal shell; 92, fixed plate; 93, planetary gear; 94, gear ring; 95, central gear; 96, limit pawl; 97, elastic telescopic assembly; 98, push rod; 99, micro switch; 910, elastic sheet; 10, worm pin; 11, slide bar; 110, hand wheel; 12, transmission shaft; 13, locking assembly; 131, pull ring; 132, elastic lock; 133, locking groove. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0023] The specific embodiments are given below.
[0024] Please refer to Figure 1 - Figure 5 The utility model provides a kind of technical scheme: a kind of connection structure of valve electric actuator, including connecting box 1, the bottom of connecting box 1 is fixedly installed with box 3, the side of box 3 is fixedly installed with cover 2, the side of cover 2 is fixedly installed with motor assembly 6, the inside of box 3 is fixedly installed with stroke transmission assembly 5, stroke transmission assembly 5 includes torque rotation assembly 8, worm assembly 7 and transmission shaft 12, the outside of worm assembly 7 is installed with output shaft assembly 4, the side of box 3 outer surface away from motor assembly 6 is fixedly installed with manual housing assembly 9.
[0025] Connecting box 1, cover 2, box 3, motor assembly 6, stroke transmission assembly 5, torque rotation assembly 8, worm assembly 7 and transmission shaft 12 structure are all relatively mature technology inside existing valve electric actuator.
[0026] The outer part of the manual shell assembly 9 is slidably connected with a sliding rod 11, one end of the sliding rod 11 extending out of the manual shell assembly 9 is fixedly connected with a hand wheel 110, the manual shell assembly 9 comprises a metal shell 91, the inside of the metal shell 91 is fixedly connected with a tooth ring 94, the middle part of the tooth ring 94 is slidably connected with a support, one side of the support is fixedly connected with a push rod 98, the inside of the box body 3 is fixedly installed with a micro switch 99, one side of the micro switch 99 is fixedly connected with an elastic sheet 910, the tail end of the elastic sheet 910 is located at one side of the micro switch 99, the position of the push rod 98 is opposite to the position of the elastic sheet 910, by arranging the micro switch 99, when manually operating the valve actuator, the push rod 98 directly presses on the elastic sheet 910, so as to make the elastic sheet 910 press the micro switch 99, thereby ensuring that the actuator is powered off, which can improve the safety of the operation hand wheel 110, avoid sudden power-on, and the electric component of the actuator works, so that the hand wheel 110 and other components are suddenly stressed, thereby causing the hand wheel 110 and other components to be easily damaged, thereby prolonging the service life of the actuator and improving the operation safety.
[0027] As shown in Figure 4 , the inside of the tooth ring 94 is fixedly connected with an elastic expansion assembly 97, the elastic expansion assembly 97 comprises a spring one and an expansion rod, the two ends of the spring one and the expansion rod are fixedly connected with the opposite surfaces of the tooth ring 94 and the support, respectively, the elastic expansion assembly 97 can drive the push rod 98 to reset, thereby avoiding the influence of the action between the push rod 98 and the elastic sheet 910 on the normal work of the motor component 6.
[0028] As shown in Figure 4 , the position of the outer wall of the metal shell 91 away from the box body 3 is fixedly installed with a locking assembly 13, the locking assembly 13 comprises a pull ring 131, one end of the pull ring 131 close to the sliding rod 11 is fixedly connected with an elastic lock 132, the end of the elastic lock 132 away from the pull ring 131 penetrates into the inside of the metal shell 91, the outer surface of the sliding rod 11 is provided with a locking groove 133, the elastic lock 132 comprises a spring two and a latch, the two ends of the spring two are fixedly connected with one side of the pull ring 131 and the outer wall of the metal shell 91, respectively, one end of the latch is fixedly connected with the side of the pull ring 131 close to the spring two, the size and shape of the inner wall of the locking groove 133 are adapted to the size and shape of the end of the latch penetrating into the inside of the metal shell 91, the elastic lock 132 clamped in the locking groove 133 can fix the position of the sliding rod 11, thereby avoiding the problem that the push rod 98 excessively presses the elastic sheet 910 and the micro switch 99, thereby causing damage to them, and at the same time, the stability of the operation hand wheel 110 can be improved, and the butt joint stability between the sliding rod 11 and the transmission shaft 12 is maintained.
[0029] As shown in Figure 4As shown, one end of the slide rod 11 inside the metal shell 91 is fixedly connected with a fixed plate 92, the edge of the fixed plate 92 away from the slide rod 11 is rotatably connected with a planetary gear 93, the outer wall of the planetary gear 93 is meshingly connected with the inner wall of the gear ring 94, the middle of the end of the fixed plate 92 away from the slide rod 11 is rotatably connected with a central gear 95, the outer wall of the central gear 95 is meshingly connected with the outer wall of the planetary gear 93, the outside of the central gear 95 is rotatably connected with the bracket, rotating the hand wheel 110 in turn drives the fixed plate 92 to rotate, in turn drives the planetary gear 93 to rotate, through the meshing action between the planetary gear 93 and the external gear ring 94, in turn can drive the central gear 95 in the middle to rotate, in turn forms the effect of speed increasing gear set, so that the rotation of the hand wheel 110 can drive the transmission shaft 12 to rotate faster, in turn improves the efficiency and convenient effect of operating the valve.
[0030] As shown in Figure 3 and Figure 4 , the edge of the central gear 95 away from the fixed plate 92 is fixedly connected with a limit claw 96, one end of the transmission shaft 12 close to the central gear 95 is fixedly connected with a worm pin 10, when the hand wheel 110 is pushed until the elastic lock 132 is clamped in the locking groove 133, the limit claw 96 is just located at the side of the worm pin 10, in turn when the hand wheel 110 is rotated, the limit claw 96 can drive the worm pin 10 to rotate, in turn improves the stability and reliability of the hand-operated valve, at the same time, through the action between the limit claw 96 and the worm pin 10, the hand wheel 110 and the worm assembly 7 are not in direct connection, in turn when the motor assembly 6 drives the actuator, the hand wheel 110 and the manual part no longer rotate synchronously, in turn reduces the working frequency and workload of the hand wheel 110 and other parts, in turn can play the effect of prolonging the service life.
[0031] As shown in Figure 3 , a rotating groove is formed in one side of the box body 3, the size and shape of the inner wall of the rotating groove are matched with the size and shape of the outer wall of the limit claw 96, and when the limit claw 96 is placed on the inner wall of the rotating groove, the worm pin 10 is just located in the limit claw 96, and the push rod 98 is just pressed on the elastic sheet 910, by setting the rotating groove, the limit claw 96 can be limited and supported to a certain extent, avoiding the problem that the rotation between the limit claw 96 and the worm pin 10 causes the limit claw 96 to deform, in turn playing the effect of protecting the limit claw 96 and prolonging its service life.
[0032] The utility model discloses a working principle: when using, generally, utilize motor assembly 6 drive worm assembly 7 work, and then drive output shaft subassembly 4 rotation, and then realize the control to valve, in the power failure etc. need manual control valve condition, push hand wheel 110, when the locking groove 133 of slide rod 11 surface slides to the just below of elastic lock catch 132, and elastic lock catch 132 is clamped in locking groove 133 inside, and then the position of slide rod 11 is fixed, at this moment, push rod 98 is directly pressed on elastic sheet 910, and then make elastic sheet 910 press micro -switch 99, and then ensure that the executor power failure can improve the security of operating hand wheel 110, avoid sudden power, and the electric component work of executor, so that hand wheel 110 etc. suddenly force component, and then lead to the problem that hand electric switch mechanism is easy to damage, and then play the effect of prolonging the service life of executor and improving the operating safety, simultaneously, the stop dog 96 just be located in the side of worm pin 10, rotate hand wheel 110 again, and then drive slide rod 11 rotation, and then drive fixed plate 92 rotation, and then drive planetary gear 93 rotation, through the meshing effect between planetary gear 93 and the tooth ring 94 of outside, and then can drive the rotation of central gear 95 in the middle, and then form the effect of speed increasing gear set, make the rotation of hand wheel 110 can drive transmission shaft 12 faster rotation, and transmission shaft 12 rotation drive worm assembly 7 work, and then drive output shaft subassembly 4 rotation, and then realize the control to valve, in this process, because the existence of speed increasing effect improves the efficiency and use experience of operating valve whole.
[0033] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A connection structure of an electric actuator for a valve comprising a connection box (1), characterized in that: The bottom of the connecting box (1) is fixedly installed with a box body (3), one side of the box body (3) is fixedly installed with a cover (2), one side of the cover (2) is fixedly installed with a motor assembly (6), the inside of the box body (3) is fixedly installed with a stroke transmission assembly (5), the stroke transmission assembly (5) comprises a torque rotating assembly (8), a worm assembly (7) and a transmission shaft (12), the outside of the worm assembly (7) is installed with an output shaft assembly (4), the outside of the box body (3) is fixedly installed with a manual shell assembly (9) away from the motor assembly (6), the outside of the manual shell assembly (9) is slidably connected with a sliding rod (11), one end of the sliding rod (11) extending out of the outside of the manual shell assembly (9) is fixedly connected with a hand wheel (110), the manual shell assembly (9) comprises a metal shell (91), the inside of the metal shell (91) is fixedly connected with a tooth ring (94), the middle part of the tooth ring (94) is slidably connected with a support, one side of the support is fixedly connected with a push rod (98), the inside of the box body (3) is fixedly installed with a micro switch (99), one side of the micro switch (99) is fixedly connected with an elastic sheet (910), the tail end of the elastic sheet (910) is located at one side of the micro switch (99), the position of the push rod (98) is opposite to the position of the elastic sheet (910).
2. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: The inside of the tooth ring (94) is fixedly connected with an elastic expansion assembly (97), the elastic expansion assembly (97) comprises a spring one and a telescopic rod, the two ends of the spring one and the telescopic rod are fixedly connected with the opposite surfaces of the tooth ring (94) and the support respectively.
3. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: The position of the metal shell (91) away from the box body (3) is fixedly installed with a locking assembly (13), the locking assembly (13) comprises a pull ring (131), one end of the pull ring (131) close to the sliding rod (11) is fixedly connected with an elastic lock (132), one end of the elastic lock (132) away from the pull ring (131) penetrates into the inside of the metal shell (91), the outer surface of the sliding rod (11) is provided with a locking groove (133).
4. The connection structure of an electric actuator for a valve according to claim 3, characterized in that: The elastic lock (132) comprises a spring two and a bolt, the two ends of the spring two are fixedly connected with one side of the pull ring (131) and the outer wall of the metal shell (91) respectively, one end of the bolt is fixedly connected with one side of the pull ring (131) close to the spring two, the size and shape of the inner wall of the locking groove (133) are matched with the size and shape of the outer wall of one end of the bolt penetrating into the inside of the metal shell (91).
5. The connection structure of an electric actuator for a valve according to claim 1, wherein: One end of the sliding rod (11) located in the inside of the metal shell (91) is fixedly connected with a fixed plate (92), the edge of one side of the fixed plate (92) away from the sliding rod (11) is rotatably connected with a planetary gear (93), the outer wall of the planetary gear (93) is meshingly connected with the inner wall of the tooth ring (94), the middle part of one end of the fixed plate (92) away from the sliding rod (11) is rotatably connected with a sun gear (95), the outer wall of the sun gear (95) is meshingly connected with the outer wall of the planetary gear (93), the outside of the sun gear (95) is rotatably connected with the support.
6. The connection structure of an electric actuator for a valve according to claim 5, wherein: The center gear (95) is fixedly connected with a limiting claw (96) at the edge away from the fixed plate (92), and the transmission shaft (12) is fixedly connected with a worm pin (10) at one end close to the center gear (95).
7. The connection structure of an electric actuator for a valve according to claim 6, characterized in that: A rotating groove is formed in one side of the box (3), the size and shape of the inner wall of the rotating groove are matched with the size and shape of the outer wall of the limiting claw (96), when the one side of the limiting claw (96) is placed on the inner wall of the rotating groove, the worm pin (10) is just located in the inside of the limiting claw (96), and the push rod (98) is just pressed on the elastic sheet (910).