Manual and automatic integrated electric valve

Abstract

The utility model discloses a manual and automatic integrated electric valve. The technical problem that an existing electric valve cannot be manually adjusted and controlled is mainly solved. The valve comprises a valve body, a valve shaft and a driving module in transmission connection with the valve shaft. The driving module comprises a driving motor for correspondingly driving the valve shaft to rotate through a reduction gear set, and a mounting plate for mounting the reduction gear set; a gear shaft of a corresponding-stage gear of the reduction gear set is in transmission connection with a manual control rod used for manually driving the reduction gear set to rotate. The reduction gear set further comprises a power separation gear, a reset spring and a pressing rod, wherein the reset spring is arranged at the position, corresponding to a gear shaft, of the power separation gear in a penetrating mode, and the pressing rod is arranged at the corresponding position of the mounting plate in a penetrating mode and used for driving the power separation gear to move in the axial direction of the gear shaft so as to cut off transmission of the reduction gear set. The electrically operated valve has the advantages of various regulation and control modes, convenience in operation, capability of realizing unified regulation and control of an irrigation pipe network and the like.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a manual-automatic integrated electric valve. Background Art

[0002] Valves play a vital role in agricultural irrigation, such as cotton field irrigation. They are not only an important part of the irrigation system, but also a key device for achieving effective irrigation, saving water resources and improving irrigation efficiency.

[0003] By opening and closing valves, water flow in irrigation systems is controlled. When irrigation is needed, valves are opened to allow water to flow into the irrigation pipes; when not, valves are closed to prevent water waste and avoid flooding. Furthermore, valve control can regulate water pressure, ensuring the irrigation system operates at moderate pressure. This prevents damage to pipes or equipment due to excessive pressure, as well as uneven irrigation across the field due to insufficient pressure in some pipe networks. Furthermore, with technological advancements, electric valves are becoming increasingly popular. These valves can be remotely and automatically controlled according to preset programs or via wireless signal transmission, enabling precise irrigation and improving irrigation efficiency.

[0004] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application discovered that the above technology has at least the following technical problems: although the existing electric valve can realize the opening or closing of the valve body through remote terminal control, it does not have a manual function, resulting in the inability to manually adjust the opening and closing of the valve body in the event of an emergency, which has an adverse effect on irrigation, delays farming time and poses a risk of causing economic losses to crops; in addition, for the existing electric valve with an opening indication function, its opening indication is set at the drive motor. Due to the transmission gap between the drive motor and the valve body valve shaft, there is a problem that the opening indication is not synchronized with the actual rotation of the valve shaft.

[0005] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, the present disclosure provides a manual-automatic integrated electric valve, which mainly solves the technical problem that the existing electric valve cannot be manually adjusted.

[0007] According to one aspect of the present disclosure, a manual-automatic integrated electric valve is provided, which mainly includes a valve body, a valve shaft for adjusting the opening of the valve body and provided with a regulating handle, and a driving module fixed relatively to the valve body and transmission connected to the valve shaft; the driving module includes a driving motor for driving the valve shaft to rotate through a reduction gear set, and a mounting plate for installing the reduction gear set; a manual regulating rod for manually driving the reduction gear set to rotate is transmission-connected at the gear shaft of the corresponding stage gear of the reduction gear set; the reduction gear set also includes a power separation gear, a reset spring provided at the gear shaft corresponding to the power separation gear, and a pressure rod provided at a corresponding position of the mounting plate and used to drive the power separation gear to move axially along its gear shaft to cut off the transmission of the reduction gear set.

[0008] In some embodiments of the present disclosure, the valve body and the driving module are connected and fixed via a clamp.

[0009] In some embodiments of the present disclosure, the valve body is provided with a positioning end at the valve shaft perpendicular to the valve shaft, and the driving module also includes a connecting end for fixedly connected to the positioning end, and the connecting end and the positioning end are respectively provided with positioning flanges at the edges of the end faces for fitting together, and the inner edge of the clamp is provided with a positioning groove matching the positioning flange.

[0010] In some embodiments of the present disclosure, the manual control rod is an external hexagonal rod that matches a corresponding external hexagonal wrench.

[0011] In some embodiments of the present disclosure, a screw handle is fixedly provided at the top end of the manual control rod.

[0012] In some embodiments of the present disclosure, the manual-automatic integrated electric valve further includes an opening pointer that rotates synchronously with the valve shaft, and limit switches are respectively provided at the extreme opening positions of the rotation plane of the opening pointer.

[0013] In some embodiments of the present disclosure, the valve shaft is a D-shaped shaft, and the gear shaft corresponding to the final gear of the reduction gear set is a hollow cylindrical shaft whose inner cavity matches and engages with the valve shaft; the opening pointer is fixed to the top of the valve shaft.

[0014] In some embodiments of the present disclosure, a pressure sensor and / or a flow sensor is provided at the cavity wall of the corresponding end of the valve body.

[0015] One or more technical solutions provided in the embodiments of this application have at least any of the following technical effects or advantages:

[0016] 1. Pressing the lever disconnects the transmission connection between the power separation gear and the adjacent gear in the reduction gear set, thereby disconnecting the transmission between the drive motor and the valve shaft, making it easier to achieve manual control through the control handle.

[0017] 2. The pressure rod can realize power conversion when manual adjustment is required for small-diameter valve bodies, and the manual adjustment rod can facilitate manual adjustment of large-diameter and high-resistance valve bodies by relying on the transmission characteristics of the reduction gear set.

[0018] 3. The opening pointer can reflect the degree of conduction of the valve body, and the opening pointer rotates synchronously with the valve shaft. Therefore, the accuracy of the valve opening indicated by the opening pointer can be guaranteed in both manual control state and automatic control state of the valve body.

[0019] 4. A clamp with a positioning groove on the inner edge between the drive device and the valve body cooperates with the positioning flange at the mating end surface of the drive device and the valve body to achieve a reliable fixed connection between the drive device and the valve body.

[0020] 5. The pressure sensor enables real-time monitoring of water pressure at the valve body. This pressure monitoring value is then used as the basis for irrigation network regulation to ensure balanced water pressure in the network, avoiding the problem of higher water pressure near the water source and relatively lower water pressure at the far end of the network.

[0021] 6. The flow sensor can accurately measure the water flow through the valve body, which serves as the basis for controlling the degree of conduction of the valve body and achieving precise irrigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a partial cross-sectional structural diagram of a manual-automatic integrated electric valve in one embodiment of the present application.

[0023] Figure 2 This is a structural diagram of the valve body part in one embodiment of the present application.

[0024] Figure 3 Schematic diagram of a portion of the structure of a driving module in one embodiment of the present application.

[0025] Figure 4 for Figure 3 A schematic diagram of the structure of the middle part A.

[0026] In the above figures, 1 is the valve body, 11 is the valve shaft, 12 is the positioning end, 2 is the regulating handle, 3 is the drive module, 31 is the connecting end, 32 is the drive motor, 33 is the reduction gear set, 34 is the base plate, 35 is the mounting plate, 36 is the pressure rod, 37 is the return spring, 38 is the manual regulating rod, 4 is the opening pointer, 5 is the limit switch, and 6 is the sensor module. DETAILED DESCRIPTION

[0027] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inside," "outside," "vertical," "horizontal," "clockwise," "counterclockwise," and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the terms "connection" and "coupling" referred to in this application include both direct and indirect connections (couplings).

[0028] The programs involved or relied upon in the following embodiments are all conventional or simple programs in the technical field, and those skilled in the art can make conventional selections or adaptive adjustments according to specific application scenarios.

[0029] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] In order to solve the technical problem that the existing electric valve cannot be manually adjusted according to the needs of on-site inspection during agricultural irrigation, this example discloses a manual-automatic integrated electric valve. Figure 1 , including a valve body 1, a control handle 2 for manually adjusting the opening of the valve body 1, and a driving module 3 for automatically adjusting the opening of the valve body 1.

[0031] Specifically in this embodiment, the manual-automatic integrated electric valve is specifically a ball valve, which includes a valve shaft 11 for adjusting the opening and closing degree of the valve core and thus adjusting the opening of the valve body 1. In order to facilitate the rotation of the valve shaft 11, see Figure 1 In this example, the valve shaft 11 is a D-shaped shaft with a D-shaped cross-section, and a regulating handle 2 is nested and fixed on the shaft body. The regulating handle is provided with a D-shaped groove that matches the D-shaped profile of the valve shaft 11, thereby preventing the regulating handle 2 mounted on the valve shaft 11 from rotating relative to the valve shaft 11, thereby achieving the follow-up movement of the valve shaft 11 when the regulating handle 2 rotates.

[0032] In order to realize the automatic adjustment of the conduction degree of the valve body, in this embodiment, the manual-automatic integrated electric valve further includes a drive module 3 to achieve the purpose of automatic control of the valve body. Specifically, in order to realize the reliable connection between the drive module 3 and the valve body 1, in this embodiment, the drive module 3 includes a connecting terminal 31, corresponding to Figure 2The valve body 1 is provided with a positioning end 12 at the valve shaft 11, wherein the end surface of the connecting end 31 for contacting with the positioning end 12 is provided with a through hole for passing the valve shaft 11, thereby achieving contact between the connecting end 31 and the positioning end 12. Furthermore, to ensure the relative fixation of the valve body 1 and the drive module 3, in this embodiment, a clamp is used to achieve the connection and fixation between the valve body 1 and the drive module 3, wherein the end surfaces of the connecting end 31 and the positioning end 12 for contacting with each other are respectively provided with positioning flanges, and correspondingly, the inner edge of the clamp is provided with a positioning groove matching the positioning flange. Therefore, by confining the positioning flanges of the connecting end and the positioning flanges of the positioning end in the positioning grooves of the clamp, the relative fixation between the valve body 1 and the drive module 3 can be achieved after the clamp is tightened.

[0033] In addition, the driving module drives the valve shaft 11 to control the opening and closing degree of the valve body. Figure 3 The drive module includes a drive motor 32. Considering that the output shaft of the drive motor 32 has a relatively high speed and a relatively small torque, it is difficult to directly drive the valve shaft 11 to rotate. Therefore, in this embodiment, the drive motor 32 and the valve shaft 11 are decelerated by a reduction gear set 33 to obtain a high torque driving force. For details, see Figure 3 The drive module includes a base plate 34, with a connection terminal 31 fixed to a corresponding position at the bottom of the base plate 34. The reduction gear set 33 is fixed to the base plate 34 via upper and lower parallel mounting plates. The mounting plates position the gears in the reduction gear set 33, ensuring effective transmission. The reduction gear set 33 includes several cooperating gears. The smaller gears drive the larger gears, achieving speed reduction and torque increase.

[0034] Among them, in order to realize the transmission connection between the final gear in the reduction gear set 33 and the valve shaft 11, in this embodiment, the gear shaft corresponding to the final gear in the reduction gear set is a hollow D-shaped sleeve structure, and the inner edge contour of the hollow cylindrical shaft of the final gear matches the outer edge contour of the valve shaft 11, thereby realizing the transmission connection between the reduction gear set and the valve shaft 11, and then realizing the power output of the drive motor 32 to the valve shaft 11.

[0035] The reduction gear set 33 can realize the driving motor 32 to drive the valve shaft 11 to rotate, thereby realizing automatic control of the valve body. However, due to the transmission connection between the valve shaft and the reduction gear set, the reduction gear set will cause great resistance when directly turning the control handle 2, making it impossible to manually control the valve body. For this reason, in this embodiment, see Figure 4In this embodiment, a pressure rod 36 is provided through the mounting plate of the reduction gear set. One end of the pressure rod 36 abuts against the non-toothed side surface of the power separation gear in the reduction gear set. Thus, by pressing the pressure rod 36, the corresponding power separation gear can be driven to disengage from the transmission connection of the reduction gear set, thereby reducing the resistance of the reduction gear set and facilitating manual rotation of the control handle 2 to achieve on-demand manual control of the valve body. In this embodiment, a limiting boss is provided on the rod body of the pressure rod 36. The limiting boss is located within the area between the upper and lower mounting plates 35. The positional interference between the limiting boss and the upper mounting plate prevents the pressure rod 36 from falling off or being pulled out by human damage. The positional interference between the limiting boss and the lower mounting plate prevents the problem of excessive pressure on the pressure rod 36, which may cause the corresponding power separation gear to be difficult to reset.

[0036] In addition, in order to ensure that the valve body can still be driven by the driving module after the valve body is manually adjusted, in this embodiment, Figure 4 A return spring 37 is mounted on the gear shaft corresponding to the power separation gear controlled by the pressure rod 36. When the power separation gear is pressed downward by the pressure rod, the return spring 37 elastically deforms, thereby preventing the power separation gear from moving axially along its gear shaft. When the pressure rod 36 is removed, the return spring 37 causes the power separation gear to move upward along its gear shaft and reset, thereby rejoining the transmission between the gears of the reduction gear set and restoring electric control of the valve body. Furthermore, to reduce resistance during manual control, the gear closest to the final gear is preferably the power separation gear. In other embodiments, to facilitate the pressing operation of the pressure rod 36, a push button is fixedly provided at the end of the pressure rod 36.

[0037] After pressing the pressure rod 36, the manual control of the small-diameter and small-resistance valve body can be achieved through the control handle 2. However, for the valve body with large diameter and large resistance, this control method will cause the control to be laborious. Figure 4 A manual control lever 38 is coaxially fixedly mounted on the gear shaft corresponding to a certain intermediate gear in the reduction gear set 33. The outer edge of the manual control lever 38 has an external hexagonal structural profile, thereby enabling convenient adjustment of the manual control lever 38 using a matching internal hexagonal wrench. Furthermore, the intermediate gear is preferably located near the transmission gear of the primary gear in the reduction gear set. This allows the valve shaft 11 to be rotated with relatively little effort by driving the relatively large gear with a relatively small diameter through a relatively large diameter pinion, thereby achieving manual control of a large-diameter, high-resistance valve body. In other embodiments, to improve control convenience and avoid carrying around a tool wrench, a screw handle is fixedly mounted at the end of the manual control lever 38, allowing the operator to rotate the manual control lever 38 as needed.

[0038] Taking into account the problem that it is difficult to directly judge the valve body opening during manual control, in this embodiment, an opening pointer 4 is provided that rotates synchronously with the valve shaft 11. Therefore, when the valve body opening changes due to the rotation of the valve shaft 11, whether it is manual adjustment or automatic adjustment, the current position of the valve shaft 11 can be indicated by the opening pointer 4, thereby reflecting the degree of conduction of the valve body. Specifically, in this embodiment, the valve shaft 11 is passed through the hollow cylindrical shaft corresponding to the final gear. In order to achieve synchronous rotation of the opening pointer 4 and the valve shaft 11, an opening pointer is fixed at the top end of the valve shaft 11 extending out of the hollow cylindrical shaft. In addition, in order to avoid the problem that the electric valve is damaged due to excessive rotation when driven by the driving motor, in this example, see Figure 3 A flat plate is fixedly arranged relative to the bottom plate 34 in parallel with the rotation plane of the opening pointer 4, and a limit switch 5 is respectively arranged at the extreme opening position where the opening pointer can rotate, that is, the position corresponding to the valve body being fully opened or closed. In this example, a certain margin is left between the position where the limit switch 5 is set and the maximum opening and closing position of the valve body, thereby avoiding damage to the valve body or the driving module caused by excessive driving of the driving motor, so that after the opening pointer 4 touches the limit switch 5, the power output of the driving motor is disconnected.

[0039] In this embodiment, see Figure 1 , a sensor module 6 is also embedded in the valve body 1. The sensor module is set to penetrate the valve body wall to penetrate into the valve cavity of the valve body and perform accurate monitoring. Among them, in this example, the sensor module includes a pressure sensor and a flow sensor, which are respectively used to measure the water pressure and flow at the valve body. For example, in the actual drip irrigation process, through the electric valves connected in series in the pipeline, based on the pressure detection value of each pressure sensor, the corresponding opening of each valve body can be regulated, thereby avoiding the problem that the proximal water supply pressure close to the water source in the pipeline is high and the distal water supply pressure decreases with the water transmission distance, thereby ensuring relatively uniform irrigation. In addition, the flow sensor can be used to measure the irrigation amount, thereby providing a control basis for farmland management and realizing precise irrigation.

[0040] Although some preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0041] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of the inventive concept. Thus, if such changes and modifications fall within the scope of the claims of this application and their equivalents, this application is intended to include such changes and modifications.

Claims

1. A manual-automatic electric valve, characterized in that: It includes a valve body, a valve shaft for adjusting the opening of the valve body and provided with a regulating handle, and a driving module fixed relatively to the valve body and transmission connected to the valve shaft; the driving module includes a driving motor that drives the valve shaft to rotate through a reduction gear set, and a mounting plate for installing the reduction gear set; a manual regulating rod for manually driving the reduction gear set to rotate is transmission-connected at the gear shaft of the corresponding stage gear of the reduction gear set; the reduction gear set also includes a power separation gear, a reset spring provided at the gear shaft corresponding to the power separation gear, and a pressure rod provided at a corresponding position of the mounting plate and used to drive the power separation gear to move axially along its gear shaft to cut off the transmission of the reduction gear set.

2. The manual-automatic electric valve according to claim 1, characterized in that: The valve body and the driving module are connected and fixed correspondingly via a clamp.

3. The manual-automatic electric valve according to claim 2, characterized in that: The valve body is provided with a positioning end at the valve shaft perpendicular to the valve shaft, and the driving module also includes a connecting end for fixedly connecting to the positioning end, and the connecting end and the positioning end are respectively provided with positioning flanges at the edges of the end faces for fitting together, and the inner edge of the clamp is provided with a positioning groove matching the positioning flange.

4. The manual-automatic integrated electric valve according to claim 1, characterized in that: The manual control rod is an external hexagonal rod that matches the corresponding internal hexagonal wrench.

5. The manual-automatic integrated electric valve according to claim 1, characterized in that: A screw handle is fixedly provided at the top end of the manual control rod.

6. The manual-automatic integrated electric valve according to claim 1, characterized in that: It also includes an opening pointer that rotates synchronously with the valve shaft, and limit switches are respectively provided at the opening extreme value positions of the rotation plane of the opening pointer.

7. The manual-automatic electric valve according to claim 6, characterized in that: The valve shaft is a D-shaped shaft, and the gear shaft corresponding to the final gear of the reduction gear set is a hollow cylindrical shaft whose inner cavity matches and engages with the valve shaft; the opening pointer is fixed to the top of the valve shaft.

8. The manual-automatic electric valve according to claim 1, characterized in that: A pressure sensor and / or a flow sensor is correspondingly provided at the cavity wall of the corresponding end of the valve body.

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