Pipeline valve structure for irrigation

Abstract

The utility model discloses a pipeline valve structure for irrigation, which comprises a valve body, a valve seat and a valve core, the valve seat and the valve core are arranged in the valve body, the valve core slides back and forth in the valve body, one end of the valve seat facing the valve core is provided with a sealing surface, the sealing surface is abutted against the end part of the valve core for sealing, and the side wall of the valve core is provided with a rack extending along the axial direction of the valve core. A driving motor is arranged at the position, close to the rack, of the outer side wall of the valve body, a rotating shaft of the driving motor is in linkage connection with a driving gear, and the driving gear is meshed with the rack. The automatic control valve has the advantages that the driving motor drives the gear to be meshed with the rack to achieve axial sliding of the valve element, opening and closing of the valve are automatically controlled, the structure is compact, operation is convenient and fast, and the automatic control level and working efficiency of an irrigation system are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline valves for agricultural irrigation, and more specifically to the structure of an irrigation pipeline valve. Background Technology

[0002] On December 2, 2025, our company applied for an irrigation pipeline valve. This pipeline valve mainly uses a drive motor to drive a drive gear, which in turn drives a transmission gear ring. The transmission gear ring and the valve core are connected by a thread, so the rotation of the transmission gear ring drives the translation of the valve core. However, the above method has a large friction contact surface between the transmission gear ring and the outer wall of the valve core, resulting in low transmission efficiency. During operation, the transmission gear ring requires a large force, so the structural strength of the transmission gear ring and the power of the drive motor are required to increase the operating cost of the pipeline valve. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a pipeline valve structure for irrigation. By adopting a transmission method that uses a rack and pinion meshing with a drive gear instead of the traditional threaded connection, the contact area of ​​the transmission components is reduced, the driving force requirement and structural strength requirement are lowered, thereby solving the problem of high operating costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pipeline valve structure for irrigation, comprising a valve body, a valve seat and a valve core disposed within the valve body, the valve core sliding back and forth within the valve body, a sealing surface being provided at one end of the valve seat facing the valve core, the sealing surface abutting against the end of the valve core for sealing, a rack extending axially on the side wall of the valve core, a drive motor being provided on the outer side wall of the valve body near the rack, the shaft of the drive motor being linked to a drive gear, the drive gear meshing with the rack.

[0005] As a further improvement of this utility model, the valve body is provided with an inlet and an outlet. The end of the valve core facing the inlet is the pressure-bearing end face. A gap is left between the drive gear and the rack so that the pressure-bearing end face can be squeezed toward the sealing surface of the valve seat after bearing the pressure of the medium.

[0006] As a further improvement of this utility model, a limiting plate extending axially is provided on the side wall of the valve core, and a limiting hole extending axially is provided in the valve body. The limiting plate is slidably disposed in the limiting hole to restrict the valve core to move only axially within the valve body.

[0007] As a further improvement of this utility model, the rack is set on the side wall of the limiting plate, and the drive gear is coaxially fixed with a rotating shaft. The end of the rotating shaft facing away from the drive gear passes through the valve body and is coaxially sleeved with a driven gear. The driven gear is linked with the rotating shaft of the drive motor through a gear set.

[0008] As a further improvement of this utility model, there are two limiting plates, which are arranged side by side with a gap between them. The drive gear is located within the gap, and the rack is arranged on the side of one of the limiting plates facing the drive gear.

[0009] The beneficial effects of this utility model are that, by adopting a transmission structure in which the rack and pinion directly meshes with the drive gear, the transmission contact area is significantly reduced compared to the traditional threaded connection method. This reduces friction and the required driving force during the driving process, thereby lowering the structural strength requirements of the transmission components. It effectively solves the problem of high cost caused by the large force on the transmission gear ring in traditional pipeline valves, demonstrating the advanced nature of the structural design. The cooperation between the limiting plate and the limiting hole ensures the stability of the valve core movement, and the double limiting plate design further improves the accuracy of the gear transmission and the compactness of the structure. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the irrigation pipeline valve of this utility model;

[0011] Figure 2 This is a three-dimensional cross-sectional schematic diagram of the irrigation pipeline valve structure of this utility model;

[0012] Figure 3 This is a schematic diagram of the closed position of the irrigation pipeline valve structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the opening position of the irrigation pipeline valve structure of this utility model;

[0014] Figure 5 This is a schematic diagram of the valve core;

[0015] Figure 6 This is a schematic diagram of the valve body limiting hole. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0017] Reference Figures 1 to 6As shown, the irrigation pipeline valve structure of this embodiment includes a valve body 1, a valve seat 2 and a valve core 3 disposed within the valve body 1. The valve core 3 slides back and forth within the valve body 1. The valve seat 2 has a sealing surface at one end facing the valve core 3, which abuts against the end of the valve core 3 to seal. A rack 31 extending axially is provided on the side wall of the valve core 3. A drive motor 5 is provided on the outer side wall of the valve body 1 near the rack 31. The shaft of the drive motor 5 is linked to a drive gear 6, which meshes with the rack 31. During operation, the drive motor 5 drives the drive gear 6 to rotate, and the meshing transmission between the gear and the rack 31 directly drives the valve core 3 to move axially. Compared with the traditional threaded transmission method, the contact area is reduced, the driving force requirement is reduced, and the problem of high strength requirements and high cost caused by excessive force on the transmission gear ring in the original structure is solved, achieving the beneficial effect of reducing the cost of use.

[0018] Reference Figure 2 As shown, the valve body 1 is further provided with an inlet 11 and an outlet 12. The end of the valve core 3 facing the inlet 11 is the pressure-bearing end face. A gap is left between the drive gear 6 and the rack 31 so that the pressure-bearing end face can be squeezed towards the sealing surface of the valve seat 2 after bearing the pressure of the medium. During operation, the medium pressure acts on the pressure-bearing end face, causing the valve core 3 to press tightly towards the valve seat 2. This, combined with the gear and rack transmission, forms a double sealing guarantee, which not only solves the problem of insufficient sealing pressure in traditional structures, but also avoids additional stress on the transmission components due to the medium pressure through the gap design.

[0019] Reference Figure 5 As shown, furthermore, a limiting plate 7 extending axially is provided on the side wall of the valve core 3, and a limiting hole 13 extending axially is provided inside the valve body 1. The limiting plate 7 is slidably disposed within the limiting hole 13 to restrict the valve core 3 to move only axially within the valve body 1. Through the cooperation between the limiting plate 7 and the limiting hole 13, it is ensured that the valve core 3 has no radial offset during movement, solving the problem of easy jamming of the valve core in the traditional structure and improving the operational stability.

[0020] Reference Figure 4 As shown, furthermore, rack 31 is disposed on the side wall of limiting plate 7, and drive gear 6 is coaxially fixed with rotating shaft 4. The end of rotating shaft 4 facing away from drive gear 6 passes through valve body 1 and is coaxially sleeved with driven gear. This driven gear is linked to the rotating shaft of drive motor 5 through gear set. The installation position of drive motor 5 is optimized through gear set transmission, solving the layout problem in a narrow space and improving transmission efficiency.

[0021] Reference Figure 3As shown, furthermore, there are two limiting plates 7, which are arranged side by side with a gap between them. The drive gear 6 is located within this gap, and the rack 31 is located on the side of one of the limiting plates 7 facing the drive gear 6. The double limiting plate structure forms a wrap-around protection for the drive gear 6, which solves the problem of foreign object interference during gear transmission, and also realizes double-sided guidance, so that the valve core 3 can move axially better.

[0022] In summary, this utility model adopts a direct meshing rack and pinion transmission scheme, which reduces the contact area and driving force requirements by optimizing the valve core drive structure, thus solving the problem of high cost of traditional threaded transmission. With the addition of improvements such as limit guidance and medium pressure assisted sealing, it achieves the technical effects of reducing operating costs, improving operational stability and sealing reliability.

[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A pipeline valve structure for irrigation, comprising a valve body (1), a valve seat (2) disposed within the valve body (1), and a valve core (3), wherein the valve core (3) slides back and forth within the valve body (1), and the valve seat (2) has a sealing surface at one end facing the valve core (3), which abuts against the end of the valve core (3) to form a seal, characterized in that: The valve core (3) has a rack (31) extending along its axial direction on its side wall. The valve body (1) has a drive motor (5) located on its outer side wall near the rack (31). The drive motor (5) has a drive gear (6) connected to its shaft. The drive gear (6) meshes with the rack (31).

2. The irrigation pipeline valve structure according to claim 1, characterized in that: The valve body (1) is provided with an inlet (11) and an outlet (12). The end of the valve core (3) facing the inlet (11) is the pressure end face. There is a gap between the drive gear (6) and the rack (31) so that the pressure end face can be squeezed towards the sealing surface of the valve seat (2) after bearing the pressure of the medium.

3. The irrigation pipeline valve structure according to claim 1 or 2, characterized in that: The valve core (3) has a limiting plate (7) extending axially on its side wall, and a limiting hole (13) extending axially is provided in the valve body (1). The limiting plate (7) is slidably disposed in the limiting hole (13) to restrict the valve core (3) to move only axially in the valve body (1).

4. The irrigation pipeline valve structure according to claim 3, characterized in that: The rack (31) is set on the side wall of the limiting plate (7), the drive gear (6) is coaxially fixed on the rotating shaft (4), the end of the rotating shaft (4) facing away from the drive gear (6) passes through the valve body (1) and is coaxially sleeved with a driven gear, which is linked to the rotating shaft of the drive motor (5) through the gear set.

5. The irrigation pipeline valve structure according to claim 3, characterized in that: The limiting plate (7) is provided in two, and the two limiting plates (7) are arranged side by side with a gap between them. The drive gear (6) is located within the gap, and the rack (31) is arranged on the side of one of the limiting plates (7) facing the drive gear (6).

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