Electric actuator

Abstract

The invention provides an electric actuator which comprises a supporting frame and fixing legs fixed to a bottom plate of the supporting frame, a stop valve body is fixedly arranged on the inner bottom wall of the supporting frame, an electric actuating assembly is arranged on the stop valve body, and the electric actuating assembly is arranged on the inner bottom wall of the supporting frame. The electric execution assembly comprises an electric actuator body fixed to the supporting frame, the driving end of the electric actuator body is fixedly connected with a driving rod, the lower end of the driving rod extends into the stop valve body and is connected with a blocking door, and the blocking door is used for blocking a liquid rotation opening in the stop valve body. The electric execution assembly further comprises a liquid amount monitoring assembly and a first cable used for electrically connecting the liquid amount monitoring assembly and the electric actuator body. Through the arrangement of the electric actuator, the watering process can be effectively controlled, and the situation that watering is too much or too little is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water-saving equipment, and in particular to an electric actuator. Background Art

[0002] Most modern production control systems use valve electric actuator mechanisms, which are safer to use than traditional valve control devices, have simpler mechanisms, and longer service life. Valve electric actuators can basically be divided into two parts, the upper part is the electric control part, and the lower part is the valve body. Electric actuators have a wide range of applications and are highly adaptable to various working conditions. Therefore, they are loved by the majority of users and have been used as safe and intelligent valve control devices.

[0003] The actuator is an indispensable and important component in the automatic control system. Its function is to receive the control signal sent by the controller and change the flow rate of the controlled medium, so as to maintain the controlled variable at the required value or within a certain range. Now more and more electric actuators have developed towards intelligence and abandoned human control. Human-controlled valves cannot start and stop the valves in time, and cannot control the amount of flow through the valves.

[0004] At present, rice irrigation is still mainly based on sprinkler irrigation and flooding irrigation. The water management and control links still rely on manual labor to judge, and the valves are opened and closed by electric actuators. On the one hand, there is a phenomenon that too much water is delivered, resulting in waste of sprinkler irrigation and flooding irrigation water. On the other hand, there is too little water delivered to effectively irrigate rice, affecting the growth of seedlings. In order to solve the above problems, the present invention proposes an electric actuator. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides an electric actuator, including a support frame, and fixed legs fixed on the bottom plate of the support frame, a shut-off valve body is fixedly arranged on the inner bottom wall of the support frame, and an electric actuator assembly is arranged on the shut-off valve body, wherein the electric actuator assembly includes an electric actuator body fixed on the support frame, a driving end of the electric actuator body is fixedly connected to a driving rod, the lower end of the driving rod extends into the shut-off valve body and is connected to a blocking door, the blocking door is used to block the liquid revolving port in the shut-off valve body, the electric actuator assembly also includes a liquid quantity monitoring assembly, and a first cable for electrically connecting the liquid quantity monitoring assembly and the electric actuator body, wherein the liquid quantity monitoring assembly is used to collect the height signal of the water content in the soil in real time, so as to drive the blocking door through the electric actuator body and the driving rod to realize the opening or closing of the liquid revolving port.

[0006] Optionally, the liquid quantity monitoring component includes a first vertical tube, an arc tube and a second vertical tube which are interconnected, the first vertical tube, the arc tube and the second vertical tube forming a "U"-shaped structure, a first float is movably arranged in the first vertical tube, a sliding rod is fixedly connected to the upper end surface of the first float, the sliding rod is movably inserted in a fixed box, the fixed box is fixedly arranged on the inner side wall of the first vertical tube, a first electrode contact is fixedly sleeved outside the sliding rod, the first electrode contact is connected to the first cable, a second electrode contact and a third electrode contact are movablely sleeved outside the sliding rod, the second electrode contact and the third electrode contact are fixedly arranged on the inner side wall of the fixed box, and the second electrode contact and the third electrode contact are respectively arranged on the upper and lower sides of the first electrode contact, the second electrode contact and the third electrode contact are both connected to the second cable; a liquid inlet is arranged on the arc tube and / or the second vertical tube.

[0007] Optionally, the liquid level monitoring component also includes a second float movably arranged in the second vertical tube, a telescopic rod is fixedly connected to the upper end face of the second float, the telescopic rod is movably inserted in the telescopic cylinder, the telescopic cylinder is fixedly arranged on the lower end face of the filter screen, the filter screen is fixedly connected to the upper end of the second vertical tube, a telescopic spring is wound around the outside of the telescopic rod, and the two ends of the telescopic spring are respectively fixedly connected to the side wall of the telescopic rod and the outer side wall of the telescopic cylinder.

[0008] Optionally, it also includes a flow control mechanism, which includes a transverse rod fixedly connected to the sliding rod, the free end of the transverse rod fixedly connected to a vertical rod, the vertical rod movably inserted into the stop valve body, one end of the vertical rod located in the stop valve body is fixedly connected to a flow control plate, the flow control plate is movably inserted into the stop valve body, the lower end of the flow control plate is fixedly connected to an anti-slip plate, the vertical rod and the flow control plate are both movably sleeved with a leak-proof sealing gasket, and the leak-proof sealing gasket is fixedly set on the inner wall and / or outer wall of the stop valve body.

[0009] Optionally, it also includes an auxiliary pushing mechanism, which includes a first pushing rod fixedly arranged on the lower end surface of the anti-slip plate, the first pushing rod is movably inserted in a pushing through hole, the pushing through hole is opened on the bottom plate of the support frame and the filter net, the lower end of the first pushing rod passes through the pushing through hole and extends into the second vertical tube, and the lower end of the first pushing rod is connected to the upper end surface of the second float.

[0010] Optionally, the auxiliary pushing mechanism also includes a first guide assembly, which is arranged between the first pushing rod and the second float and is used to connect the first pushing rod and the second float, the first guide assembly includes a first guide rod, a first guide cylinder and a first guide spring, the first guide rod is movably inserted in the first guide cylinder, the first guide spring is wound and arranged outside the first guide rod, and the two ends of the first guide spring are respectively fixedly connected to the side wall of the first guide rod and the outer side wall of the first guide cylinder.

[0011] Optionally, it also includes a locking mechanism for connecting the driving rod and the blocking door, the locking mechanism includes a fixing seat fixed on the side wall of the groove of the blocking door, the fixing seat is provided with a locking groove, a locking rod is movably inserted in the locking groove, the locking rod is movably inserted on the supporting rod, and one end of the locking rod located outside the locking groove extends into a movable groove provided on the supporting rod, the side wall of the movable groove is fixedly connected to an electromagnet, one end of a connecting spring is fixedly connected to the side wall of the electromagnet, the other end of the connecting spring is fixedly connected to a magnet block, and the magnet block is fixedly set on the locking rod, and the electric actuator also includes a collector arranged on the electric actuator body and / or the support frame.

[0012] Optionally, it also includes a locking mechanism, which includes a supporting plate that is abutted against the lower end surface of the supporting rod, one end of a push-pull rod is hinged on the lower end surface of the supporting plate, the push-pull rod is tilted, and the free lower end of the push-pull rod is hinged on the upper end surface of a second push rod, the second push rod and the push-pull rod are both movably arranged in a sliding groove, the sliding groove is opened on the blocking door, and the sliding groove is connected to the groove on the blocking door, and the end of the second push rod located outside the sliding groove is fixedly connected to a locking plate, and the locking plate is matched with the vertical rod.

[0013] Optionally, the locking mechanism also includes a second guide assembly having one end connected to the second push rod and the other end connected to the side wall of the sliding groove, the second guide assembly including a second guide rod, a second guide cylinder and a second guide spring, the second guide rod being movably inserted in the second guide cylinder, the second guide spring being wound outside the second guide rod, one end of the second guide spring being fixedly connected to the outer side wall of the second guide rod, and the other end of the second guide spring being fixedly connected to the outer side wall of the second guide cylinder.

[0014] Optionally, the locking mechanism also includes a mounting block fixedly connected to the side wall of the sliding groove, a third guide assembly is fixedly connected to the upper end face of the mounting block, the upper end of the third guide assembly is fixedly connected to the lower end face of the support plate, the third guide assembly includes a third guide rod, a third guide cylinder and a third guide spring, the third guide rod is movably inserted in the third guide cylinder, the third guide spring is wound outside the third guide rod, and both ends of the third guide spring are respectively fixedly connected to the side wall of the third guide rod and the outer side wall of the third guide cylinder.

[0015] The beneficial effects of the present invention are as follows: The present invention improves the structure of the existing electric actuator. The improved electric actuator is additionally provided with a liquid volume monitoring component capable of monitoring the liquid volume in the rice field in real time. In this way, according to the monitoring result, the electric actuator body and the driving rod can intelligently drive the blocking door to realize the opening or closing of the liquid revolving port, thereby ensuring that the water volume in the rice field is maintained within a reasonable range, avoiding the phenomenon of water waste in sprinkler irrigation and flooding irrigation when too much water is delivered, and the problem of inability to effectively irrigate rice when too little water is delivered. It can be seen that the arrangement of the electric actuator in the present invention can effectively control the watering process and avoid excessive or insufficient watering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an existing electric actuator; Figure 2 It is a schematic diagram of the structure of an embodiment of the electric actuator of the present invention; Figure 3 The electric actuator of the present invention Figure 2 A schematic diagram of the partially enlarged structure; Figure 4 It is a structural schematic diagram of the flow control mechanism in the electric actuator of the present invention; Figure 5 The electric actuator of the present invention Figure 4 A schematic diagram of the enlarged structure in the middle; Figure 6 It is a structural schematic diagram of the auxiliary driving mechanism in the electric actuator of the present invention; Figure 7 It is a structural schematic diagram of the locking mechanism in the electric actuator of the present invention; Figure 8 The electric actuator of the present invention Figure 7 A magnified schematic diagram of the structure B in the middle; Fig. 9 It is a structural schematic diagram of the locking mechanism in the electric actuator of the present invention; Fig.10 The electric actuator of the present invention Fig. 9 Enlarged schematic diagram of the C structure in the middle. Reference numerals

[0017] Support frame 1, fixed leg 2, stop valve body 4, electric actuator assembly 5, electric actuator body 51, first cable 52, liquid volume monitoring assembly 53, first vertical tube 531, first float 532, slide bar 533, fixed box 534, first electrode contact piece 535, second electrode contact piece 536, third electrode contact piece 537, second cable 538, arc tube 539, second vertical tube 5310, liquid inlet hole 5311, second float 5312, telescopic rod 5313, telescopic cylinder 5314, telescopic spring 5315, filter screen 5316, reset spring 5317, drive rod 54, Blocking door 6, Flow control mechanism 7, transverse rod 71, vertical rod 72, flow control plate 73, anti-drop plate 74, Auxiliary pushing mechanism 8, first pushing rod 81, pushing through hole 82, first guide assembly 83, first guide rod 831, first guide cylinder 832, first guide spring 833, Collector 9, Locking mechanism 10, fixing seat 101, locking groove 102, locking rod 103, supporting rod 104, magnet block 105, connecting spring 106, electromagnet 107, moving groove 108, Locking mechanism 11, supporting plate 111, push-pull rod 112, sliding groove 113, second push rod 114, locking plate 115, second guide assembly 116, second guide rod 1161, second guide cylinder 1162, second guide spring 1163, mounting block 117, third guide assembly 118, third guide rod 1181, third guide cylinder 1182, third guide spring 1183. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0019] Existing electric actuators do not have a structure for monitoring the amount of liquid. Figure 1As shown, the amount of watering can only be judged manually, so there will be problems of overwatering or underwatering during the watering process.

[0020] In view of the problems existing in the prior art, an embodiment of the present invention provides an electric actuator, such as Figure 2 As shown, the electric actuator includes a support frame 1, and a fixed leg 2 fixed on the bottom plate of the support frame 1. The setting of the fixed leg 2 fixes the entire electric actuator in the field. In one example, the bottom plate of the support frame 1 is in contact with the ground or sunken below the ground surface; a stop valve body 4 is fixedly arranged on the inner bottom wall of the support frame 1, and the stop valve body 4 is used to transport water, and the left end opening of the stop valve body 4 is the water outlet end, and the right end opening is the water inlet end; an electric actuator component 5 is arranged on the stop valve body 4. In the existing setting, the electric actuator component 5 drives the blocking door 6 to move up and down under human control to complete the blocking and opening of the liquid rotary port.

[0021] In one example, Figure 2 As shown, the electric actuator assembly 5 includes an electric actuator body 51 fixed on the support frame 1, and the driving end of the electric actuator body 51 is fixedly connected to a driving rod 54, the lower end of the driving rod 54 extends into the shut-off valve body 4, and is connected to a blocking door 6, and the blocking door 6 is used to block the liquid revolving port in the shut-off valve body 4 (the liquid revolving port is between the left end opening and the right end opening of the shut-off valve body 4), and the electric actuator assembly 5 also includes a liquid volume monitoring assembly 53, and a first cable 52 for electrically connecting the liquid volume monitoring assembly 53 and the electric actuator body 51, wherein the liquid volume monitoring assembly 53 is used to collect the height signal of the water volume in the soil in real time, so as to drive the blocking door 6 through the electric actuator body 51 and the driving rod 54 to realize the opening or closing of the liquid revolving port.

[0022] In one embodiment, Figure 2 and Figure 3 As shown, the liquid quantity monitoring component 53 includes a first vertical tube 531, an arc tube 539 and a second vertical tube 5310 which are interconnected. The first vertical tube 531, the arc tube 539 and the second vertical tube 5310 form a "U"-shaped structure. The setting of the "U"-shaped structure can ensure that the liquid levels in the first vertical tube 531 and the second vertical tube 5310 are at the same height.

[0023] In one example, Figure 3As shown, a first float 532 is movably arranged in the first vertical tube 531. The first float 532 can be suspended on the surface of the liquid. When the liquid rises, the first float 532 moves upward driven by buoyancy, and when the liquid falls, the first float moves downward driven by gravity. A slide rod 533 is fixedly connected to the upper end surface of the first float 532. In one example, a limiting ring is arranged at the top end of the first vertical tube 531. The slide rod 533 is slidably arranged in the limiting ring. The limiting ring is arranged to limit the slide rod 533 to move only in the vertical direction.

[0024] In one example, Figure 3 As shown, the slide bar 533 is movably inserted into the fixed box 534, and the fixed box 534 is set to seal the internal structure; the fixed box 534 is fixedly set on the inner wall of the first vertical tube 531, and the slide bar 533 is fixedly sleeved with a first electrode contact 535, and the first electrode contact 535 is connected to the first cable 52. It is worth noting that Figure 3 In the example, the first cable 52 is recessed in the wiring groove provided on the sliding bar 533, which can prevent jamming and avoid the risk of the first cable 52 being broken due to excessive bending; the sliding bar 533 is movably sleeved with a second electrode contact 536 and a third electrode contact 537, and the second electrode contact 536 and the third electrode contact 537 are both fixedly provided on the inner wall of the fixed box 534, and the second electrode contact 536 and the third electrode contact 537 are respectively provided on the upper and lower sides of the first electrode contact 535, and the second cable 538 is connected to the second electrode contact 536 and the third electrode contact 537.

[0025] In one example, Figure 3 As shown, the arc tube 539 and / or the second vertical tube 5310 are provided with a liquid inlet hole 5311. Specifically, in one implementation process, the arc tube 539 and the second vertical tube 5310 are both provided with a liquid inlet hole 5311; in another implementation process, the arc tube 539 or the second vertical tube 5310 is provided with a liquid inlet hole 5311.

[0026] In one example, Figure 3 As shown, a return spring 5317 is wound around the outside of the sliding rod 533, and both ends of the return spring 5317 are respectively fixedly connected to the side wall of the sliding rod 533 and the side wall of the fixed box 534. The return spring 5317 is provided to provide downward thrust to prevent the first float 532 from being blocked by obstacles below and unable to move downward when the water level drops.

[0027] The setting of the liquid volume monitoring component 53 in this embodiment can monitor the situation of too little or too much water in the paddy field in real time. When the water volume is too little, the blocking door 6 is controlled to open the liquid revolving port so that the water can enter the paddy field. When the water volume is too much, the blocking door 6 is controlled to close the liquid revolving port to stop the input of water into the paddy field. The above process can be completed automatically without manual control, so that the watering process can be better realized. During operation, when the water volume in the paddy field decreases, the first float 532 will move downward with the slide bar 533, and the downward movement of the slide bar 533 will move downward with the first electrode contact sheet 535. When the first electrode contact sheet 535 contacts the second electrode contact sheet 536, the electric actuator body 51 controls the driving rod 54 to move upward with the blocking door 6, open the liquid revolving port, and allow water to enter the paddy field; otherwise, the liquid revolving port is closed to stop inputting water into the paddy field. The principle is the same as above and will not be repeated here.

[0028] In order to balance the weight of each structure disposed in the first vertical tube 531, in one embodiment, Figure 3 As shown, the liquid quantity monitoring component 53 also includes a second float 5312, and a telescopic rod 5313 is fixedly connected to the upper end surface of the second float 5312. The telescopic rod 5313 is movably inserted in the telescopic cylinder 5314, and the telescopic cylinder 5314 is fixedly arranged on the lower end surface of the filter screen 5316. The filter screen 5316 is fixedly connected to the upper end of the second vertical tube 5310. A telescopic spring 5315 is wound around the outside of the telescopic rod 5313, and the two ends of the telescopic spring 5315 are respectively fixedly connected to the side wall of the telescopic rod 5313 and the outer side wall of the telescopic cylinder 5314.

[0029] In this embodiment, the combined structure of the second float 5312, telescopic rod 5313, telescopic cylinder 5314 and telescopic spring 5315 arranged in the second vertical tube 5310 is used to balance the weight of the various structures arranged in the first vertical tube 531 to ensure that when the water level in the first vertical tube 531 rises or falls, the first float 532 can move upward or downward in real time.

[0030] During the watering process, as water is continuously input into the paddy field, the water level in the paddy field will quickly approach a reasonable range (the reasonable range means that the water level is neither too much nor too little). In order to avoid the input water flow rate being too high and the input amount not being well controlled, resulting in the water amount for watering exceeding the reasonable range, in one embodiment, Figure 4 and Figure 5As shown, the electric actuator also includes a flow control mechanism 7, which includes a transverse rod 71 fixedly connected to the sliding rod 533, the free end of the transverse rod 71 is fixedly connected to a vertical rod 72, the vertical rod 72 is movably plugged into the stop valve body 4, one end of the vertical rod 72 located in the stop valve body 4 is fixedly connected to a flow control plate 73, the flow control plate 73 is movably plugged into the stop valve body 4, the lower end of the flow control plate 73 is fixedly connected to an anti-slip plate 74, the vertical rod 72 and the flow control plate 73 are both movably sleeved with a leak-proof sealing gasket, and the leak-proof sealing gasket is fixedly arranged on the inner wall and / or outer wall of the stop valve body 4.

[0031] The flow control mechanism 7 in this embodiment can control the flow of input water, that is, when the water level in the paddy field increases, the water flow rate will be reduced so that the water level can be accurately controlled within a reasonable range; when the water level in the paddy field decreases, the water flow rate will be increased so that the water level can be quickly replenished within a reasonable range; it can be seen that in the season when rice needs to be watered, the water level in the paddy field can be kept within a reasonable range through the device, thereby ensuring that the rice is always in the best growth state. During operation, when the water level rises, the first float 532 will move upward with the slide bar 533, and the upward movement of the slide bar 533 will move upward with the flow control plate 73 through the transverse rod 71 and the vertical rod 72, and the upward movement of the flow control plate 73 will gradually block the water delivery cross section of the stop valve body 4, and continuously reduce the water input; otherwise, the working principle is the same and will not be repeated here.

[0032] In order to ensure that the buoyancy of the first float 532 can drive the flow control plate 73 to move upward, in one embodiment, Figure 6 As shown, the electric actuator also includes an auxiliary pushing mechanism 8, which includes a first pushing rod 81 fixedly arranged on the lower end surface of the anti-slip plate 74, and the first pushing rod 81 is movably inserted in a pushing through hole 82. The pushing through hole 82 is opened on the bottom plate of the support frame 1 and the filter net 5316, and the lower end of the first pushing rod 81 passes through the pushing through hole 82 and extends to the second vertical tube 5310, and the lower end of the first pushing rod 81 is connected to the upper end surface of the second float 5312.

[0033] The setting of this embodiment can drive the flow control plate 73 to move upward, which can cooperate with the buoyancy of the first float 532 to achieve effective upward movement of the flow control plate 73; specifically, the first float 532 and the second float 5312 can move upward or downward synchronously, and the two always remain on the same horizontal line, so that the buoyancy of the first float 532 and the second float 5312 can provide power for the upward movement of the flow control plate 73.

[0034] In one embodiment, Figure 6 As shown, the auxiliary pushing mechanism 8 also includes a first guide assembly 83, which is arranged between the first pushing rod 81 and the second float 5312, and is used for connecting the first pushing rod 81 and the second float 5312. The first guide assembly 83 includes a first guide rod 831, a first guide cylinder 832 and a first guide spring 833. The first guide rod 831 is movably inserted in the first guide cylinder 832, and the first guide spring 833 is wound outside the first guide rod 831. The two ends of the first guide spring 833 are respectively fixedly connected to the side wall of the first guide rod 831 and the outer wall of the first guide cylinder 832.

[0035] Since the liquid inlet hole 5311 is only opened on the second vertical tube 5310 and the arc tube 539, the pressure in the second vertical tube 5310 and the first vertical tube 531 will be inconsistent. In order to ensure that the flow control plate 73 is pushed inconsistently due to the air pressure in the second vertical tube 5310 and the first vertical tube 531, the structure of the first guide assembly 83 is set in this embodiment. The setting of the first guide assembly 83 can not only play a buffering role so that the pushing process of the flow control plate 73 can be adjusted to be consistent, but also provide a reset force for the second float 5312 to reset relative to the first push rod 81. Of course, in another example, the liquid inlet hole 5311 can also be set on the first vertical tube 531.

[0036] In order to better improve the intelligence of the device, in one implementation, Figure 7 and Figure 8As shown, the electric actuator also includes a locking mechanism 10 for connecting the driving rod 54 and the blocking door 6. In this embodiment, the setting of the locking mechanism 10 can realize the detachable installation of the driving rod 54 and the blocking door 6; the locking mechanism 10 includes a fixing seat 101 fixed on the side wall of the groove of the blocking door 6, and a locking groove 102 is provided on the fixing seat 101, and a locking rod 103 is movably inserted in the locking groove 102, and the locking rod 103 is movably inserted in the supporting rod 104, and the end of the locking rod 103 located outside the locking groove 102 extends into the movable groove 108 provided on the supporting rod 104, and the side of the movable groove 108 An electromagnet 107 is fixedly connected to the wall, one end of a connecting spring 106 is fixedly connected to the side wall of the electromagnet 107, the other end of the connecting spring 106 is fixedly connected to the magnet block 105, and the magnet block 105 is fixedly set on the locking rod 103. In this embodiment, there are two groups of combined structures of the fixed seat 101, the locking groove 102, the locking rod 103, the magnet block 105, the connecting spring 106, the electromagnet 107 and the movable groove 108. The two groups of combined structures are symmetrically arranged about the supporting rod 104. In this way, locking and installation from both sides can make the driving rod 54 and the blocking door 6 more firmly fixed, and the blocking door 6 will not be deflected after being fixed.

[0037] In one embodiment, if Figure 7 As shown, the electric actuator also includes a collector 9 arranged on the electric actuator body 51 and / or the support frame 1. In one example, the electric actuator body 51 and the support frame 1 are both provided with a collector 9; in another example, the electric actuator body 51 or the support frame 1 is provided with a collector 9; the setting of the collector 9 can collect seasonal signals or time signals. When a signal that rice does not need to be watered is collected, the electromagnet 107 will be controlled to be energized to generate magnetism, and the locking rod 103 will be pulled back into the moving groove 108 through the magnet block 105. At the same time, the electric actuator body 51 will control the driving rod 54 to move upward to disengage from the blocking door 6. At this time, the blocking door 6 is always in the state of blocking the liquid revolving port to prevent water from entering the paddy field.

[0038] In order to prevent the liquid volume monitoring component 53 from erroneously controlling the electric actuator body 51 during the time when the rice does not need water, in one embodiment, Fig. 9 and Fig.10As shown, the electric actuator also includes a locking mechanism 11, which includes a supporting plate 111 that is abutted against the lower end surface of the supporting rod 104, and one end of a push-pull rod 112 is hinged on the lower end surface of the supporting plate 111. The push-pull rod 112 is tilted, and the free lower end of the push-pull rod 112 is hinged on the upper end surface of a second push rod 114. The second push rod 114 and the push-pull rod 112 are both movably arranged in a sliding groove 113, and the sliding groove 113 is opened on the blocking door 6, and the sliding groove 113 is connected to the groove on the blocking door 6. The end of the second push rod 114 located outside the sliding groove 113 is fixedly connected with a locking plate 115, and the locking plate 115 is matched with the vertical rod 72.

[0039] The setting of the locking mechanism 11 in this embodiment can lock the vertical rod 72, thereby locking the first float 532 through the transverse rod 71 and the sliding rod 533, and locking the second float 5312 through the first push rod 81, so as to ensure that when the rice does not need water, the first float 532 and the second float 5312 will not move with the water level in the U-shaped structure; when working, when the driving rod 54 disengages from the blocking door 6 and moves upward, the supporting plate 111 loses the downward squeeze. At this time, the supporting plate 111 moves upward and pulls the second push rod 114 to the right through the push-pull rod 112. The rightward movement of the second push rod 114 will move the locking plate 115 to the right, and form a resistance to the vertical rod 72, locking the current position of the vertical rod 72.

[0040] In one embodiment, Fig.10 As shown, the locking mechanism 11 further includes a second guide assembly 116, one end of which is connected to the second push rod 114 and the other end of which is connected to the side wall of the sliding groove 113. The second guide assembly 116 includes a second guide rod 1161, a second guide cylinder 1162 and a second guide spring 1163. The second guide rod 1161 is movably inserted in the second guide cylinder 1162, the second guide spring 1163 is wound and arranged outside the second guide rod 1161, one end of the second guide spring 1163 is fixedly connected to the outer side wall of the second guide rod 1161, and the other end of the second guide spring 1163 is fixedly connected to the outer side wall of the second guide cylinder 1162. The arrangement of the second guide assembly 116 in this embodiment can not only play a role in limiting the movement of the second push rod 114, so that the second push rod 114 can only move left and right in the horizontal direction, but also provide a reset force for the reset movement of the second push rod 114.

[0041] In one embodiment, Fig.10As shown, the locking mechanism 11 also includes a mounting block 117 fixedly connected to the side wall of the sliding groove 113, and a third guide assembly 118 is fixedly connected to the upper end surface of the mounting block 117. The upper end of the third guide assembly 118 is fixedly connected to the lower end surface of the supporting plate 111. The third guide assembly 118 includes a third guide rod 1181, a third guide cylinder 1182 and a third guide spring 1183. The third guide rod 1181 is movably inserted in the third guide cylinder 1182, and the third guide spring 1183 is wound and arranged outside the third guide rod 1181. The two ends of the third guide spring 1183 are respectively fixedly connected to the side wall of the third guide rod 1181 and the outer side wall of the third guide cylinder 1182. The third guide assembly 118 in this embodiment provides thrust for the upward movement of the supporting plate 111, and at the same time, it can ensure that the supporting plate 111 only moves in the vertical direction.

[0042] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. An electric actuator, characterized in that: The invention comprises a support frame (1), and a fixed leg (2) fixed to a bottom plate of the support frame (1); a stop valve body (4) is fixedly arranged on an inner bottom wall of the support frame (1); an electric actuator assembly (5) is arranged on the stop valve body (4); the electric actuator assembly (5) comprises an electric actuator body (51) fixed to the support frame (1); a driving end of the electric actuator body (51) is fixedly connected to a driving rod (54); a lower end of the driving rod (54) extends into the stop valve body (4) and is connected to A blocking door (6) is used to block a liquid rotary port in a stop valve body (4); the electric actuator assembly (5) further comprises a liquid volume monitoring assembly (53) and a first cable (52) for electrically connecting the liquid volume monitoring assembly (53) and the electric actuator body (51); wherein the liquid volume monitoring assembly (53) is used to collect a height signal of the water volume in the soil in real time, so as to drive the blocking door (6) through the electric actuator body (51) and the driving rod (54) to realize opening or closing of the liquid rotary port.

2. The electric actuator according to claim 1, characterized in that: The liquid volume monitoring component (53) comprises a first vertical tube (531), an arc tube (539) and a second vertical tube (5310) which are interconnected. The first vertical tube (531), the arc tube (539) and the second vertical tube (5310) form a "U"-shaped structure. A first float (532) is movably arranged in the first vertical tube (531). A sliding rod (533) is fixedly connected to the upper end surface of the first float (532). The sliding rod (533) is movably inserted in a fixing box (534). The fixing box (534) is fixedly arranged on the inner side wall of the first vertical tube (531). A first electrode contact sheet (535) is fixedly sleeved outside the sliding rod (533). The first electrode contact piece (535) is connected to the first cable (52); a second electrode contact piece (536) and a third electrode contact piece (537) are movably sleeved outside the sliding rod (533); the second electrode contact piece (536) and the third electrode contact piece (537) are both fixedly arranged on the inner side wall of the fixed box (534); the second electrode contact piece (536) and the third electrode contact piece (537) are respectively arranged on the upper and lower sides of the first electrode contact piece (535); the second electrode contact piece (536) and the third electrode contact piece (537) are both connected to the second cable (538); and a liquid inlet hole (5311) is arranged on the arc tube (539) and / or the second vertical tube (5310).

3. The electric actuator according to claim 2, characterized in that: The liquid volume monitoring component (53) further comprises a second float (5312) movably arranged in the second vertical tube (5310); a telescopic rod (5313) is fixedly connected to the upper end surface of the second float (5312); the telescopic rod (5313) is movably inserted in the telescopic cylinder (5314); the telescopic cylinder (5314) is fixedly arranged on the lower end surface of the filter screen (5316); the filter screen (5316) is fixedly connected to the upper end of the second vertical tube (5310); a telescopic spring (5315) is wound around the outside of the telescopic rod (5313); and the two ends of the telescopic spring (5315) are respectively fixedly connected to the side wall of the telescopic rod (5313) and the outer side wall of the telescopic cylinder (5314).

4. The electric actuator according to claim 3, characterized in that: The valve also comprises a flow control mechanism (7), the flow control mechanism (7) comprising a transverse rod (71) fixedly connected to the slide rod (533), the free end of the transverse rod (71) being fixedly connected to a vertical rod (72), the vertical rod (72) being movably plugged into the stop valve body (4), one end of the vertical rod (72) located inside the stop valve body (4) being fixedly connected to a flow control plate (73), the flow control plate (73) being movably plugged into the stop valve body (4), the lower end of the flow control plate (73) being fixedly connected to an anti-slip plate (74), the vertical rod (72) and the flow control plate (73) being movably sleeved with a leakproof sealing pad, the leakproof sealing pad being fixedly arranged on the inner side wall and / or the outer side wall of the stop valve body (4).

5. The electric actuator according to claim 4, characterized in that: It also includes an auxiliary pushing mechanism (8), the auxiliary pushing mechanism (8) including a first pushing rod (81) fixedly arranged on the lower end surface of the anti-slip plate (74), the first pushing rod (81) being movably inserted into a pushing through hole (82), the pushing through hole (82) being provided on the bottom plate of the support frame (1) and the filter screen (5316), the lower end of the first pushing rod (81) passing through the pushing through hole (82) and extending into the second vertical tube (5310), the lower end of the first pushing rod (81) being connected to the upper end surface of the second float (5312).

6. The electric actuator according to claim 5, characterized in that: The auxiliary pushing mechanism (8) further comprises a first guide assembly (83), the first guide assembly (83) being arranged between the first pushing rod (81) and the second float (5312) and being used for connecting the first pushing rod (81) and the second float (5312), the first guide assembly (83) comprising a first guide rod (831), a first guide cylinder (832) and a first guide spring (833), the first guide rod (831) being movably inserted into the first guide cylinder (832), the first guide spring (833) being wound around the outside of the first guide rod (831), and the two ends of the first guide spring (833) being respectively fixedly connected to the side wall of the first guide rod (831) and the outer side wall of the first guide cylinder (832).

7. The electric actuator according to claim 4, characterized in that: The invention also comprises a locking mechanism (10) for connecting the driving rod (54) and the blocking door (6), the locking mechanism (10) comprising a fixing seat (101) fixed on the side wall of the groove of the blocking door (6), the fixing seat (101) being provided with a locking groove (102), a locking rod (103) being movably inserted in the locking groove (102), the locking rod (103) being movably inserted in the supporting rod (104), and the end of the locking rod (103) located outside the locking groove (102) extending to the supporting rod (104). An electromagnet (107) is fixedly connected to a side wall of the movable groove (108) in a movable groove (108) formed on the rod (104); one end of a connecting spring (106) is fixedly connected to the side wall of the electromagnet (107); the other end of the connecting spring (106) is fixedly connected to a magnet block (105); the magnet block (105) is fixedly arranged on a locking rod (103); and the electric actuator further comprises a collector (9) arranged on the electric actuator body (51) and / or the support frame (1).

8. The electric actuator according to claim 7, characterized in that: The locking mechanism (11) further comprises a supporting plate (111) which is arranged to abut against the lower end surface of the supporting rod (104); one end of a push-pull rod (112) is hingedly connected to the lower end surface of the supporting plate (111); the push-pull rod (112) is arranged to be inclined; the free lower end of the push-pull rod (112) is hingedly connected to the upper end surface of a second pushing rod (114); the second pushing rod (114) and the push-pull rod (112) are both movably arranged in a sliding groove (113); the sliding groove (113) is provided on the blocking door (6); and the sliding groove (113) is connected to a groove on the blocking door (6); one end of the second pushing rod (114) located outside the sliding groove (113) is fixedly connected to a locking plate (115); and the locking plate (115) is arranged to match the vertical rod (72).

9. The electric actuator according to claim 8, characterized in that: The locking mechanism (11) further comprises a second guide assembly (116) having one end connected to the second push rod (114) and the other end connected to the side wall of the sliding groove (113); the second guide assembly (116) comprises a second guide rod (1161), a second guide cylinder (1162) and a second guide spring (1163); the second guide rod (1161) is movably inserted into the second guide cylinder (1162); the second guide spring (1163) is wound around the outside of the second guide rod (1161); one end of the second guide spring (1163) is fixedly connected to the outer side wall of the second guide rod (1161); and the other end of the second guide spring (1163) is fixedly connected to the outer side wall of the second guide cylinder (1162).

10. The electric actuator according to claim 8, characterized in that: The locking mechanism (11) further comprises a mounting block (117) fixedly connected to the side wall of the sliding groove (113); a third guide assembly (118) is fixedly connected to the upper end surface of the mounting block (117); the upper end of the third guide assembly (118) is fixedly connected to the lower end surface of the supporting plate (111); the third guide assembly (118) comprises a third guide rod (1181), a third guide cylinder (1182) and a third guide spring (1183); the third guide rod (1181) is movably inserted in the third guide cylinder (1182); the third guide spring (1183) is wound around the outside of the third guide rod (1181); and the two ends of the third guide spring (1183) are respectively fixedly connected to the side wall of the third guide rod (1181) and the outer side wall of the third guide cylinder (1182).

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