Connecting valve for agricultural water conservancy project

Abstract

The invention relates to a connecting valve for agricultural hydraulic engineering, which belongs to the technical field of agricultural hydraulic engineering and comprises a valve body, a water inlet pipe fixedly communicated with the left side of the valve body, a water outlet pipe fixedly communicated with the right side of the valve body and an adjusting cylinder fixedly communicated with the upper surface of the water inlet pipe. Flange pieces are fixedly connected to the ends, away from the valve body, of the water inlet pipe and the water outlet pipe correspondingly, a non-return structure is arranged in the valve body, and a flow adjusting mechanism extending into the adjusting cylinder is arranged on the upper surface of the adjusting cylinder. The non-return structure comprises a filter plate fixedly connected to the joint of the valve body and the water outlet pipe and a supporting leg fixedly connected to the left side of the filter plate. According to the connecting valve for the agricultural water conservancy project, a non-return structure and a flow adjusting mechanism are used in cooperation, and accurate and incremental adjustment of flow is achieved; the invention can provide remarkable advantages in the aspects of ensuring safety, reducing water hammer risk, optimizing flow characteristics, reducing vibration and noise, improving sealing performance, being convenient to maintain and repair, having strong adaptability and the like.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural water conservancy projects, and in particular to a connecting valve for agricultural water conservancy projects. Background Art

[0002] Agriculture is the foundation of China's economic development. Agricultural development in different regions requires different irrigation systems, and connecting valves are one of the most critical components. Currently, agricultural production requires large quantities of water. To extract water, connecting valves are used. These valves not only control the flow of water but also connect water pipes. Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. Based on their function, they can be divided into shut-off valves, check valves, and regulating valves. Valves are control components in fluid conveying systems, performing functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion, and overflow pressure relief.

[0003] A search revealed Chinese patent publication number CN214947112U, which discloses a connecting valve for agricultural water conservancy projects. The valve body comprises a gasket-limiting mechanism mounted on flanges fixedly connected at both ends of the valve body. A valve stem is rotatably mounted on a valve cover fixedly mounted on the side of the valve body. The upper end of the valve stem is connected to a rotating handle mechanism via a two-way ratchet mechanism. The two-way ratchet mechanism comprises a rotating seat, which includes a stopper. A ratchet is fixedly mounted on the valve stem inside the rotating seat. One end of an outer sleeve fixedly connected to the side of the rotating seat has a square groove formed therein for sliding connection to the stopper. A connecting rod and a rotating handle are connected to the other end of the stopper. A pawl is attached to the other end of the connecting rod and is fitted with a return spring. This utility model allows the operator to adjust the rotational direction of the two-way ratchet mechanism, consisting of the pawl and ratchet, by rotating the handle, making it convenient for the operator to open or close the valve with one hand.

[0004] The aforementioned patent has the following shortcomings: In agricultural irrigation, precise control of fluid flow is crucial for improving water resource utilization efficiency and ensuring uniform crop irrigation. However, the connecting valve used in agricultural irrigation projects has a simple on / off function and lacks the ability to precisely adjust flow. Furthermore, water quality issues can easily lead to pipe blockage during irrigation, reducing irrigation efficiency and tool life.

[0005] Therefore, it is urgent to improve the connecting valve for agricultural water conservancy projects to solve the above-mentioned problems. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a connecting valve for agricultural water conservancy projects, which has the advantages of facilitating precise and incremental adjustment of fluid flow. It solves the problems that the connecting valve for agricultural water conservancy projects has a simple switching function, lacks the ability to accurately adjust the flow, and is easily blocked in the pipe due to water quality problems during the irrigation process, thereby reducing irrigation efficiency and tool service life.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a connecting valve for agricultural water conservancy projects, comprising a valve body, an inlet pipe fixedly connected to the left side of the valve body, an outlet pipe fixedly connected to the right side of the valve body, and an adjusting cylinder fixedly connected to the upper surface of the inlet pipe, wherein the inlet pipe and the outlet pipe are fixedly connected to flanges at their ends away from the valve body, a check structure is provided inside the valve body, and a flow regulating mechanism is provided on the upper surface of the adjusting cylinder extending therein; The check structure includes a filter plate fixedly connected to the connection between the valve body and the water outlet pipe, a support leg fixedly connected to the left side of the filter plate, a flow deflector fixedly connected to the left end of the support leg, a valve plate arranged on the left side of the flow deflector, and a reset structure arranged between the flow deflector and the valve plate; The flow regulating mechanism includes a movable sleeve slidably connected to the inside of the regulating cylinder, an regulating rod slidably connected to the inside of the movable sleeve, a pump plug fixedly connected to the bottom end of the regulating rod, a sealing surface fixedly connected to the outer surface of the pump plug, and a driving mechanism arranged outside the regulating cylinder.

[0008] Furthermore, the outer diameter of the filter plate is adapted to the inner diameter of the water outlet pipe, and a plurality of filter holes are provided inside the filter plate, and the plurality of filter holes are distributed at equal intervals inside the filter plate.

[0009] Furthermore, the support legs are fixed to the air deflector by screws, the air deflector is trumpet-shaped, and the outer diameter of the air deflector is smaller than the inner diameter of the valve body.

[0010] Furthermore, a sealing gasket is fixedly connected to the outside of the valve plate, and the sealing gasket abuts against the inner wall of the connection between the water inlet pipe and the valve body. The sealing gasket is a rubber gasket.

[0011] Furthermore, the reset structure includes a connecting plate that is detachably connected to the right side of the valve plate, the right side of the connecting plate is fixedly connected to a mounting tube, the inner wall of the mounting tube is fixedly connected to a reset spring, the end of the reset spring away from the mounting tube is fixedly connected to a limiting plate, and the right side of the limiting plate is fixedly connected to a connecting rod extending to the outside of the mounting tube.

[0012] Furthermore, the mounting tube is a hollow cylinder, the outer diameter of the reset spring is adapted to the inner diameter of the mounting tube, a movable hole adapted to the connecting rod is opened inside the mounting tube, a waterproof gasket adapted to the connecting rod is fixedly installed inside the movable hole, and the end of the connecting rod away from the limit plate is fixedly connected to the inner wall of the air duct.

[0013] Furthermore, the adjusting cylinder is a hollow cylinder, and a movable opening adapted to the movable sleeve is opened inside the adjusting cylinder. A micro electric push rod is fixedly mounted on the inner top wall of the movable sleeve, and the adjusting rod is fixedly connected to the output end of the micro electric push rod.

[0014] Furthermore, the pump plug and the sealing surface are both distributed inside the water inlet pipe in an inclined shape, and the sealing surface fits the inner wall of the water inlet pipe.

[0015] Furthermore, the driving mechanism includes two mounting brackets that are detachably connected to the outside of the adjusting cylinder. A motor is fixedly installed on the outside of the right mounting bracket, and a rocker arm is fixedly connected to the output shaft of the motor. The rocker arm is rotatably connected to the inside of the two mounting brackets.

[0016] Furthermore, the outer portion of the rocker arm is rotatably connected to a connecting ear, the bottom of the connecting ear is fixedly connected to a universal joint, and one end of the universal joint away from the connecting ear is fixedly connected to the top of the movable sleeve.

[0017] Compared with the prior art, the present invention provides a connecting valve for agricultural water conservancy projects, which has the following beneficial effects: This connecting valve for agricultural water conservancy projects has a reset structure that effectively avoids vibration and noise caused by direct impact between the valve plate and the valve body when the valve body is opened. The combined sealing structure of the valve plate and sealing gasket has a noise-absorbing and shock-absorbing effect, facilitating on-site maintenance by users, while preventing backflow and protecting key equipment such as pumps and compressors from damage. This connecting valve for agricultural water conservancy projects, through the elastic reaction force of the reset spring, makes the closing of the valve plate completely accompanied by the reverse flow of the fluid. The short stroke ensures the rapid dynamic response of the valve plate and reduces the reverse flow rate through the valve plate to a minimum, thereby preventing the danger of water hammer phenomenon inside the valve body and the water inlet pipe. By providing a mounting cylinder, it is convenient to protect the reset spring and the connecting rod, avoiding the damping phenomenon of the valve plate due to long-term use, effectively preventing water backflow, protecting the normal operation of the irrigation system, and extending the service life of the system.

[0018] This connecting valve for agricultural water conservancy projects starts the motor through a controller, causing its output shaft to drive the rocker arm and the connecting ear to rotate, so that the connecting ear drives the movable sleeve and the pump plug to reciprocate up and down through the universal joint, causing the pump plug and the sealing surface to move linearly along the center line of the fluid, thereby achieving the purpose of opening and closing the fluid. The controller activates the extension and contraction of the micro-electric push rod, driving the adjustment rod and the pump plug to move downward, thereby accurately adjusting the frequency of the up and down reciprocating movement of the pump plug. By accurately controlling the reciprocating motion of the pump plug, the opening and closing of the water inlet pipe can be accurately adjusted to achieve precise control of the fluid flow rate. At the same time, the stability of the reciprocating motion can ensure the stability of the water inlet pipe during the opening and closing process, avoiding problems such as sticking or vibration. This connecting valve for agricultural water conservancy projects achieves precise and incremental adjustment of flow by combining a check structure with a flow regulating mechanism, facilitating precise and incremental adjustment of fluid flow, and providing significant advantages in terms of ensuring safety, reducing water hammer risks, optimizing flow characteristics, reducing vibration and noise, improving sealing performance, facilitating maintenance and overhaul, and having strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural perspective diagram of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 2 This is a cross-sectional perspective view of the structure of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 3 This is a structural perspective view of a check structure of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 4 This is an exploded view of the structure of a check structure of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 5 This is a cross-sectional perspective view of a check structure of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 6 This is a structural sectional perspective view of a reset structure of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 7 This is a cross-sectional perspective view of the structure of a regulating cylinder of a connecting valve for agricultural water conservancy projects according to the present invention; Figure 8 This is a structural sectional stereoscopic diagram of a flow regulating mechanism of a connecting valve for agricultural water conservancy projects according to the present invention.

[0020] In the figure: 1. Valve body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Adjusting cylinder; 5. Flange; 6. Check structure; 601. Filter plate; 602. Support leg; 603. Guide cover; 604. Valve plate; 605. Sealing gasket; 606. Connecting plate; 607. Mounting cylinder; 608. Return spring; 609. Connecting rod; 7. Flow regulating mechanism; 701. Moving sleeve; 702. Adjusting rod; 703. Pump plug; 704. Sealing surface; 705. Mounting bracket; 706. Motor; 707. Rocker arm; 708. Connecting ear; 709. Universal joint; 710. Micro electric push rod. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-8 In this embodiment, a connecting valve for agricultural water conservancy projects includes a valve body 1, an inlet pipe 2 fixedly connected to the left side of the valve body 1, an outlet pipe 3 fixedly connected to the right side of the valve body 1, and a regulating cylinder 4 fixedly connected to the upper surface of the inlet pipe 2. The inlet pipe 2 and the outlet pipe 3 are fixedly connected to a flange 5 at their ends away from the valve body 1. A check structure 6 is provided within the valve body 1, and a flow regulating mechanism 7 extending into the upper surface of the regulating cylinder 4 is provided. The check structure 6 includes a filter plate 601 fixedly connected to the connection between the valve body 1 and the outlet pipe 3, a support leg 602 fixedly connected to the left side of the filter plate 601, a flow deflector 603 fixedly connected to the left end of the support leg 602, a valve plate 604 disposed on the left side of the flow deflector 603, and a reset structure disposed between the flow deflector 603 and the valve plate 604. The reset structure effectively prevents vibration and noise caused by direct impact between the valve plate 604 and the valve body 1 when the valve body 1 is opened. By providing a combined sealing structure of the valve plate 604 and the sealing gasket 605, it has the effect of silencing and reducing vibration, which is convenient for users to perform on-site maintenance, and at the same time prevents backflow, protecting key equipment such as pumps and compressors from damage.

[0023] The outer diameter of the filter plate 601 matches the inner diameter of the water outlet pipe 3, and a plurality of filter holes are provided inside the filter plate 601. The filter holes are evenly spaced and distributed inside the filter plate 601. By providing the filter holes, the fluid can be buffered and filtered.

[0024] Specifically, the support legs 602 are fixed to the deflector 603 by screws. The deflector 603 is trumpet-shaped, and the outer diameter of the deflector 603 is smaller than the inner diameter of the valve body 1. The detachable design facilitates maintenance and repair.

[0025] It should be noted that a sealing gasket 605 is fixedly connected to the outside of the valve plate 604, and the sealing gasket 605 abuts against the inner wall of the connection between the water inlet pipe 2 and the valve body 1. The sealing gasket 605 is a rubber gasket. By setting the sealing gasket 605, the sealing effect of the valve plate 604 is effectively improved.

[0026] It should be noted that the reset structure includes a connecting plate 606 detachably connected to the right side of the valve plate 604. A mounting cylinder 607 is fixedly connected to the right side of the connecting plate 606. A reset spring 608 is fixedly connected to the inner wall of the mounting cylinder 607. The end of the reset spring 608, remote from the mounting cylinder 607, is fixedly connected to a limit plate. A connecting rod 609, extending to the exterior of the mounting cylinder 607, is fixedly connected to the right side of the limit plate. Under the elastic reaction force of the reset spring 608, the closing of the valve plate 604 is completely accompanied by reverse fluid flow. The short stroke ensures a rapid dynamic response of the valve plate 604 and minimizes the reverse flow velocity through the valve plate 604. This prevents the risk of water hammer within the valve body 1 and the water inlet pipe 2, protects the normal operation of the irrigation system, and extends the system's service life.

[0027] Furthermore, mounting tube 607 is a hollow cylinder, the outer diameter of return spring 608 being compatible with its inner diameter. A movable hole is defined within mounting tube 607, which is compatible with connecting rod 609. A waterproof gasket compatible with connecting rod 609 is fixedly mounted within the movable hole. The end of connecting rod 609, away from the stop plate, is fixedly connected to the inner wall of shroud 603. The provision of mounting tube 607 facilitates protective treatment of return spring 608 and connecting rod 609, preventing damping of valve plate 604 due to long-term use and effectively preventing water backflow.

[0028] In this embodiment, the flow regulating mechanism 7 includes a movable sleeve 701 slidably connected to the inside of the regulating cylinder 4, an regulating rod 702 slidably connected to the inside of the movable sleeve 701, a pump plug 703 fixedly connected to the bottom end of the regulating rod 702, a sealing surface 704 fixedly connected to the outer surface of the pump plug 703, and a driving mechanism arranged outside the regulating cylinder 4. The motor 706 is started by the controller so that its output shaft drives the rocker arm 707 and the connecting ear 708 to rotate, so that the connecting ear 708 drives the movable sleeve 701 and the pump plug 703 to reciprocate up and down through the universal joint 709, so that the pump plug 703 and the sealing surface 704 move linearly along the center line of the fluid, thereby achieving the purpose of opening and closing the fluid. The micro electric push rod 710 is started to extend and retract by the controller, driving the adjustment rod 702 and the pump plug 703 to move downward, thereby accurately adjusting the frequency of the up and down reciprocating movement of the pump plug 703. By accurately controlling the reciprocating motion of the pump plug 703, the opening and closing of the water inlet pipe 2 can be accurately adjusted to achieve precise control of the fluid flow rate. At the same time, the stability of the reciprocating motion can ensure the stability of the water inlet pipe 2 during the opening and closing process, avoiding problems such as jamming or vibration. By using the check structure 6 in conjunction with the flow regulating mechanism 7, precise and incremental adjustment of the flow rate is achieved, which can provide significant advantages in ensuring safety, reducing the risk of water hammer, optimizing flow characteristics, reducing vibration and noise, improving sealing performance, facilitating maintenance and repair, and having strong adaptability.

[0029] The regulating tube 4 is a hollow cylinder with an opening inside that mates with the movable sleeve 701. A micro-electric push rod 710 is fixedly mounted on the inner top wall of the movable sleeve 701, and the regulating rod 702 is fixedly connected to the output end of the micro-electric push rod 710. The controller activates the micro-electric push rod 710 to extend and retract, driving the regulating rod 702 and the pump plug 703 downward, thereby precisely adjusting the frequency of the pump plug 703's up and down movement. By precisely controlling the reciprocating motion of the pump plug 703, the opening and closing of the water inlet pipe 2 can be precisely adjusted, achieving precise control of the fluid flow rate. This provides efficient flow control while maintaining a low pressure drop.

[0030] Specifically, the pump plug 703 and the sealing surface 704 are both distributed in an inclined manner inside the water inlet pipe 2 , and the sealing surface 704 fits against the inner wall of the water inlet pipe 2 .

[0031] It should be noted that the driving mechanism includes two mounting brackets 705 that are detachably connected to the outside of the adjusting cylinder 4. A motor 706 is fixedly installed on the outside of the right mounting bracket 705. A rocker arm 707 is fixedly connected to the output shaft of the motor 706. The rocker arm 707 is rotatably connected to the inside of the two mounting brackets 705.

[0032] In addition, the outer portion of the rocker arm 707 is rotatably connected to a connecting ear 708, the bottom of which is fixedly connected to a universal joint 709. The end of the universal joint 709, which is away from the connecting ear 708, is fixedly connected to the top of the movable sleeve 701. The provision of the universal joint 709 helps ensure that the driving mechanism drives the pump plug 703 to move back and forth stably. At the same time, the stability of the reciprocating motion of the pump plug 703 ensures the stability of the water inlet pipe 2 during the opening and closing process, avoiding problems such as sticking or vibration.

[0033] The working principle of the above embodiment is: When in use, the staff first connects the water pipes to the valve body 1 through the flange 5 through the water inlet pipe 2 and the water outlet pipe 3 provided on both sides, and starts the motor 706 through the controller, so that its output shaft drives the rocker arm 707 and the connecting ear 708 to rotate, so that the connecting ear 708 drives the movable sleeve 701 and the pump plug 703 to reciprocate up and down through the universal joint 709, so that the pump plug 703 and the sealing surface 704 make a linear motion along the center line of the fluid, thereby achieving the purpose of opening and closing the fluid, and starts the micro electric push rod 710 to extend and retract through the controller, driving the adjusting rod 702 and the pump plug 703 to move downward, so as to accurately adjust the frequency of the up and down reciprocating movement of the pump plug 703. By accurately controlling the reciprocating motion of the pump plug 703, the opening and closing of the water inlet pipe 2 can be accurately adjusted; in the pipeline system After the system is opened, the closing of the valve plate 604 is completely accompanied by the reverse flow of the fluid under the elastic reaction force of the reset spring 608. The short stroke ensures the rapid dynamic response of the valve plate 604, thereby connecting the valve body 1 and the water inlet pipe 2. By setting the reset structure, the direct impact between the valve plate 604 and the valve body 1 when the valve body 1 is opened is effectively avoided to generate vibration and noise. By setting the combined sealing structure of the valve plate 604 and the sealing gasket 605, it has the effect of silencing and shock absorption, and reduces the reverse flow rate through the valve plate 604 to a minimum, thereby preventing the danger of water hammer phenomenon inside the valve body 1 and the water inlet pipe 2. By setting the installation cylinder 607, the reset spring 608 and the connecting rod 609 are protected to avoid the damping phenomenon of the valve plate 604 due to long-term use, effectively preventing water backflow.

[0034] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods, and can be implemented as long as they can achieve their beneficial effects. In addition, the electrical components appearing in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Technicians in this field can control the electrical components through simple programming, and the existing disclosed power connection technology is also common knowledge in this field, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A connecting valve for agricultural water conservancy projects, characterized by: The valve body (1) comprises a water inlet pipe (2) fixedly connected to the left side of the valve body (1), a water outlet pipe (3) fixedly connected to the right side of the valve body (1), and a regulating cylinder (4) fixedly connected to the upper surface of the water inlet pipe (2), wherein the ends of the water inlet pipe (2) and the water outlet pipe (3) away from the valve body 1 are fixedly connected with flanges (5), a check structure (6) is provided inside the valve body (1), and a flow regulating mechanism (7) extending into the interior of the regulating cylinder (4) is provided on the upper surface of the regulating cylinder (4); The non-return structure (6) comprises a filter plate (601) fixedly connected to the connection between the valve body (1) and the water outlet pipe (3), a support leg (602) fixedly connected to the left side of the filter plate (601), a flow guide cover (603) fixedly connected to the left end of the support leg (602), a valve plate (604) arranged on the left side of the flow guide cover (603), and a reset structure arranged between the flow guide cover (603) and the valve plate (604); The flow regulating mechanism (7) comprises a movable sleeve (701) slidably connected to the interior of the regulating cylinder (4), an regulating rod (702) slidably connected to the interior of the movable sleeve (701), a pump plug (703) fixedly connected to the bottom end of the regulating rod (702), a sealing surface (704) fixedly connected to the outer surface of the pump plug (703), and a driving mechanism arranged outside the regulating cylinder (4).

2. A connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: The outer diameter of the filter plate (601) is adapted to the inner diameter of the water outlet pipe (3), and a plurality of filter holes are provided inside the filter plate (601), and the plurality of filter holes are distributed at equal intervals inside the filter plate (601).

3. The connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: The support leg (602) and the flow guide cover (603) are fixed by screws. The flow guide cover (603) is trumpet-shaped, and the outer diameter of the flow guide cover (603) is smaller than the inner diameter of the valve body (1).

4. The connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: A sealing gasket (605) is fixedly connected to the outside of the valve plate (604), and the sealing gasket (605) abuts against the inner wall of the connection between the water inlet pipe (2) and the valve body (1). The sealing gasket (605) is a rubber gasket.

5. The connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: The reset structure includes a connecting plate (606) detachably connected to the right side of the valve plate (604), a mounting tube (607) fixedly connected to the right side of the connecting plate (606), a reset spring (608) fixedly connected to the inner wall of the mounting tube (607), an end of the reset spring (608) away from the mounting tube (607) fixedly connected to a limiting plate, and a connecting rod (609) extending to the outside of the mounting tube (607) fixedly connected to the right side of the limiting plate.

6. The connecting valve for agricultural water conservancy projects according to claim 5, characterized in that: The mounting tube (607) is a hollow cylinder. The outer diameter of the reset spring (608) is adapted to the inner diameter of the mounting tube (607). A movable hole adapted to the connecting rod (609) is provided inside the mounting tube (607). A waterproof gasket adapted to the connecting rod (609) is fixedly installed inside the movable hole. The end of the connecting rod (609) away from the limiting plate is fixedly connected to the inner wall of the deflector (603).

7. The connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: The regulating cylinder (4) is a hollow cylinder, and a movable opening adapted to the movable sleeve (701) is provided inside the regulating cylinder (4). A micro electric push rod (710) is fixedly mounted on the inner top wall of the movable sleeve (701), and the regulating rod (702) is fixedly connected to the output end of the micro electric push rod (710).

8. The connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: The pump plug (703) and the sealing surface (704) are both distributed in an inclined manner inside the water inlet pipe (2), and the sealing surface (704) is in contact with the inner wall of the water inlet pipe (2).

9. The connecting valve for agricultural water conservancy projects according to claim 1, characterized in that: The driving mechanism comprises two mounting frames (705) detachably connected to the outside of the regulating cylinder (4); a motor (706) is fixedly mounted on the outside of the right mounting frame (705); a rocker arm (707) is fixedly connected to the output shaft of the motor (706); and the rocker arm (707) is rotatably connected to the inside of the two mounting frames (705).

10. The connecting valve for agricultural water conservancy projects according to claim 9, characterized in that: The rocker arm (707) is externally rotatably connected to a connecting ear (708), the bottom of the connecting ear (708) is fixedly connected to a universal joint (709), and one end of the universal joint (709) away from the connecting ear (708) is fixedly connected to the top of the movable sleeve (701).

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