Pipeline valve for irrigation

Abstract

The utility model discloses a pipeline valve 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, the outer side wall of the valve core is provided with threads, and a transmission gear ring is rotatably arranged in the valve body. The valve element is sleeved with the transmission gear ring, the inner side wall of the transmission gear ring is in threaded connection with the outer side wall of the valve element, a driving motor is arranged at the position, close to the transmission gear ring, of the outer side wall of the valve body, a driving gear is coaxially and rotatably arranged on a rotating shaft of the driving motor, and the driving gear is meshed with the transmission gear ring. Movement of the valve element is achieved through the driving motor and the gear transmission mechanism, and compared with the mode in the prior art, transmission pairs are reduced, and the system structure is simplified.

Description

Technical Field

[0001] This utility model relates to the field of irrigation equipment technology, and more specifically to an irrigation pipeline valve. Background Technology

[0002] During irrigation, the water pressure flowing within the system is often high, so high-pressure pipeline valves are mostly used. However, these valves come into contact with high-pressure media, making the rubber rings prone to deformation and sealing failure. This can lead to leakage when the valve is closed. To address this issue, our company proposed a ceramic hard-seal pipeline valve solution on October 21, 2024. This solution uses a ceramic hard seal between the valve core and seat. However, this solution suffers from a large pitch in the screw, the main driving component. Therefore, a worm gear is used to drive the worm wheel, which in turn drives the screw to open and close the valve. This structure is complex and difficult to manufacture. Furthermore, the valve core, screw, worm wheel, and worm gear use a hard contact method, and the sealing force between the valve core and seat requires a tight fit between the worm wheel and the screw. Therefore, even slight deformation of components can easily lead to insufficient sealing force and valve failure. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an irrigation pipeline valve that solves the problems of complex structure, difficult processing, and insufficient sealing force leading to failure in existing high-pressure pipeline valves by simplifying the drive structure and optimizing the sealing fit.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an irrigation pipeline valve, comprising a valve body, a valve seat and a valve core disposed within the valve body, wherein the valve core slides back and forth within the valve body, and the valve seat has a sealing surface at one end facing the valve core, which abuts against the end of the valve core to seal. The outer wall of the valve core is threaded, and a transmission gear ring is rotatably disposed within the valve body, the transmission gear ring being sleeved on the valve core, the inner wall of the transmission gear ring being threadedly connected to the outer wall of the valve core, and a drive motor is disposed on the outer wall of the valve body near the transmission gear ring, the shaft of the drive motor being coaxially and rotatably provided with a drive gear, the drive gear meshing with the transmission gear ring.

[0005] As a further improvement of this utility model, the outer wall of the valve core is provided with a sliding groove extending along its length direction, and a sliding rib is provided in the valve body at a position relative to the sliding groove. The sliding groove can be slidably fitted onto the sliding rib, so that the valve core can only slide back and forth in the valve body.

[0006] As a further improvement of this utility model, a first fixing member is coaxially fixed to the valve body relative to the slide groove. The first fixing member is sleeved on the valve core, and the slide rib is arranged on the inner side wall of the first fixing member.

[0007] As a further improvement of this utility model, the valve seat includes a second fixing member and a sealing gasket. The second fixing member is fixedly installed on the valve body, and the side facing the valve core is the sealing surface. The sealing gasket is installed on the sealing surface and is used to seal against the end face of the valve core.

[0008] As a further improvement of this utility model, an irrigation pipeline valve includes a valve body, a valve seat and a valve core disposed within the valve body. The valve core slides back and forth within the valve body. The valve seat has a sealing surface at one end facing the valve core, which abuts against the end of the valve core to seal. The valve core has a pressure-bearing end face at one end facing away from the valve seat, which is pressed towards the sealing surface of the valve seat after bearing the pressure of the medium through the pressure-bearing end face.

[0009] As a further improvement of this utility model, the outer wall of the valve core is provided with threads, and a transmission gear ring is rotatably provided in the valve body. The transmission gear ring is sleeved on the valve core, and its inner wall is threadedly connected to the outer wall of the valve core. A drive motor is provided on the outer wall of the valve body near the transmission gear ring. The shaft of the drive motor is coaxially rotatably provided with a drive gear, which meshes with the transmission gear ring. There is a movable gap between the thread of the inner wall of the transmission gear ring and the thread of the outer wall of the valve core, so that the valve core can be pushed towards the valve seat by the pressure end face.

[0010] As a further improvement of this utility model, the distance of the movable gap is between 0.2mm and 1mm.

[0011] As a further improvement of this utility model, the valve seat includes a second fixing member and a sealing gasket. The second fixing member is fixedly installed on the valve body, and the side facing the valve core is the sealing surface. The sealing gasket is installed on the sealing surface and is used to seal against the end face of the valve core. The sealing gasket is made of a soft material.

[0012] The advantages of this invention are that the drive motor directly drives the gear set to move the valve core, eliminating the need for the traditional worm gear structure, simplifying the overall structure and reducing the difficulty of processing; on the other hand, during the process of closing the station seal, the seal is mainly achieved by the pressure-bearing end face of the valve core bearing the medium pressure. Compared with the existing technology that only uses mechanical structure sealing, the fit requirements between various mechanical parts are not as tight, and the problem of seal failure caused by slight deformation of the mechanical structure is not easily solved. Attached Figure Description

[0013] Figure 1The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram.

[0014] Figure 2 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram.

[0015] Figure 3 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram.

[0016] Figure 4 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram.

[0017] Figure 5 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram. Figure 2 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram.

[0018] Figure 6 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram. Figure 2 The utility model discloses a pipeline valve for irrigation's structure diagram shows that the utility model discloses a pipeline valve for irrigation's internal structure diagram shows that the utility model discloses a pipeline valve for irrigation's closing station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's opening station's structure diagram shows that the utility model discloses a pipeline valve for irrigation's first fixed part's structure diagram. Specific implementation

[0019] The utility model will be further detailed below with the embodiment shown in the accompanying drawings.

[0020] Refer to Figure 1 , Figure 2 The utility model discloses a pipeline valve for irrigation, including valve body 1, the valve seat 2 and the valve core 3 of setting in valve body 1, the valve core 3 is back and forth in valve body 1 Slippage, the valve seat 2 towards the one end of valve core 3 is equipped with sealing surface, and the end of valve core 3 is sealed by the abutment of the sealing surface, the outside wall of valve core 3 is equipped with screw threads, the transmission gear ring 4 rotatable is equipped in valve body 1, the transmission gear ring 4 is set on valve core 3, and the inside wall of this transmission gear ring 4 is connected with the outside wall of valve core 3 by screw thread, and the outside wall of valve body 1 is equipped with drive motor 5 close to transmission gear ring 4's position, and the driving gear 6 rotatable is equipped with the driving gear 6 of drive motor 5's rotary shaft, and the driving gear 6 is engaged with transmission gear ring 4. Drive motor 5 works and drives the driving gear 6 to rotate, and the driving gear 6 is engaged transmission gear ring 4 transmission, makes transmission gear ring 4 rotate around the axis of valve core 3, and the axial slippage of valve core 3 is converted to the rotation motion by the cooperation of transmission gear ring 4 inside wall screw thread and valve core 3 outside wall screw thread, realizes the switch action of valve. Compared with traditional worm and gear drive structure, this scheme directly drives through gear set, reduces intermediate transmission component, simplifies the overall structure, reduces the machining precision requirement and assembly difficulty, effectively solves the problem of complex structure, machining difficulty in background art.

[0021] Further, refer to Figure 5As shown, the outer side wall of the valve core 3 is provided with a sliding groove 31 extending along its length direction, and the valve body 1 is provided with a sliding rib 11 relative to the position of the sliding groove 31, and the sliding groove 31 is sleeved on the sliding rib 11, so that the valve core 3 can only slide back and forth in the valve body 1. When the transmission tooth ring 4 drives the valve core 3 to move axially, the sliding groove 31 and the sliding rib 11 form a guide fit, which limits the circumferential rotation of the valve core 3, ensures the accurate axial movement of the valve core 3 at all times, avoids the difficulty in realizing the threaded fit translational movement caused by the rotation of the valve core 3, and improves the stability of the structure operation.

[0022] Further, referring to Figure 6 As shown, the valve body 1 is coaxially fixed with a first fixing member 12 relative to the position of the sliding groove 31, the first fixing member 12 is sleeved on the valve core 3, and the sliding rib 11 is arranged on the inner side wall of the first fixing member 12. The first fixing member 12 is connected with the valve body 1 by coaxial fixing, and the sliding rib 11 is arranged on the first fixing member 12, which can realize the replaceable effect of the sliding rib 11. Therefore, when the sliding rib 11 is worn out due to long-term frequent opening and closing of the valve, only the first fixing member 12 needs to be replaced, which effectively reduces the maintenance cost.

[0023] Further, referring to Figure 2 As shown, the valve seat 2 includes a second fixing member 21 and a sealing gasket 22, the second fixing member 21 is fixedly installed on the valve body 1, and the side facing the valve core 3 is a sealing surface, and the sealing gasket 22 is installed on the sealing surface and used for abutting and sealing with the end surface of the valve core 3. The second fixing member 21 provides rigid support for the sealing gasket 22, ensures the flatness of the sealing surface, and the sealing gasket 22 made of soft material can produce slight deformation when the valve core 3 is extruded, fill the microscopic unevenness of the sealing surface, improve the sealing effect, and have better sealing adaptability compared with the traditional hard sealing structure.

[0024] Further, referring to Figure 2 As shown, the valve core 3 is provided with a pressure receiving end face at the end away from the valve seat 2, so as to extrude the sealing surface of the valve seat 2 through the pressure receiving end face after bearing the medium pressure. When the valve is in a closed state, the medium pressure acts on the pressure receiving end face of the valve core 3 to generate an axial thrust towards the valve seat 2, which enhances the close fit of the valve core 3 and the sealing gasket 22, and compared with the mechanical close fit hard transmission mode in the prior art, can effectively avoid the sealing failure caused by the micro-deformation of the mechanical structure.

[0025] Further, referring to Figure 2As shown, the outer side wall of the valve core 3 is provided with threads, the valve body 1 is rotatably provided with a transmission gear ring 4, the transmission gear ring 4 is sleeved on the valve core 3, the inner side wall of the transmission gear ring 4 is threadedly connected with the outer side wall of the valve core 3, the outer side wall of the valve body 1 is provided with a driving motor 5 near the transmission gear ring 4, the rotating shaft of the driving motor 5 is coaxially and rotatably provided with a driving gear 6, the driving gear 6 is engaged with the transmission gear ring 4, and the threads between the inner side wall of the transmission gear ring 4 and the threads of the outer side wall of the valve core 3 leave a movable gap for the valve core 3 to be pushed by the pressure receiving end face and translated towards the valve seat 2. The movable gap design allows the valve core 3 to produce additional axial displacement under the action of medium pressure, and when the components are slightly deformed due to temperature changes or long-term use, the valve core 3 can automatically adjust the position through the gap, ensuring that the sealing surface always maintains effective adhesion, solving the problem of insufficient sealing force caused by deformation in traditional hard contact transmission.

[0026] Further, the distance of the movable gap is between 0.2mm and 1mm. This gap range can meet the needs of the valve core 3 for slight compensation, and can also avoid the shaking of the valve core 3 caused by too large gap. Through multiple experiments, the gap value of 0.2mm to 1mm can ensure the stability of the movement of the valve core 3 while ensuring the sealing compensation effect, and is suitable for most pressure working conditions of irrigation systems.

[0027] Further, referring to Figure 2 As shown, the valve seat 2 includes a second fixing member 21 and a sealing gasket 22, the second fixing member 21 is fixedly installed on the valve body 1, and the side facing the valve core 3 is a sealing surface, the sealing gasket 22 is installed on the sealing surface and used for sealing against the end face of the valve core 3, and the sealing gasket 22 is made of soft material. The soft sealing gasket 22 can be made of aging-resistant materials such as nitrile rubber or fluororubber. When the valve core 3 is extruded, it will elastically deform and form full-area contact with the end face of the valve core 3. Compared with ceramic hard sealing, it has better buffering performance and can absorb impact load during the movement of the valve core 3, prolonging the service life of the sealing components, and at the same time, it can cooperate with the above-mentioned movable gap to achieve better sealing effect.

[0028] In summary, the structure design of driving the valve core to slide directly by the driving motor driving gear set effectively simplifies the transmission system of the traditional high-pressure pipeline valve, reduces the processing difficulty and assembly complexity, and the high efficiency of gear transmission and the precision of thread cooperation improve the stability of the movement of the valve core. The pressure compensation mechanism of the pressure receiving end face and the thread movable gap can automatically adapt to the deformation of the components, ensure that the sealing force always remains in the effective range, and completely solve the problem of sealing failure in the background technology.

[0029] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. An irrigation pipeline valve comprising a valve body (1), a valve seat (2) and a valve core (3) arranged in the valve body (1), the valve core (3) sliding back and forth in the valve body (1), the valve seat (2) being provided with a sealing surface at one end of the valve core (3) for sealing against the end of the valve core (3), characterized in that: The outer side wall of the valve core (3) is provided with a thread, the valve body (1) is rotatably provided with a transmission gear ring (4), the transmission gear ring (4) is sleeved on the valve core (3), the inner side wall of the transmission gear ring (4) is threadedly connected with the outer side wall of the valve core (3), the outer side wall of the valve body (1) is provided with a driving motor (5) at a position close to the transmission gear ring (4), the rotating shaft of the driving motor (5) is coaxially and rotatably provided with a driving gear (6), and the driving gear (6) is engaged with the transmission gear ring (4).

2. The pipe valve for irrigation according to claim 1, characterized in that: The outer side wall of the valve core (3) is provided with a sliding groove (31) extending along the length direction thereof, the valve body (1) is provided with a sliding rib (11) at a position relative to the sliding groove (31), and the sliding groove (31) is slidably sleeved on the sliding rib (11), so that the valve core (3) can only slide back and forth in the valve body (1).

3. A pipe valve for irrigation according to claim 2, characterized in that: The valve body (1) is coaxially fixed with a first fixing member (12) at a position relative to the sliding groove (31), the first fixing member (12) is sleeved on the valve core (3), and the sliding rib (11) is arranged on the inner side wall of the first fixing member (12).

4. A pipe valve for irrigation according to any one of claims 1 to 3, characterized in that: The valve seat (2) comprises a second fixing member (21) and a sealing gasket (22), the second fixing member (21) is fixedly installed on the valve body (1), one side of the second fixing member (21) facing the valve core (3) is a sealing surface, and the sealing gasket (22) is installed on the sealing surface and used for sealing against the end surface of the valve core (3).

5. An irrigation pipeline valve comprising a valve body (1), a valve seat (2) and a valve core (3) arranged in the valve body (1), the valve core (3) sliding back and forth in the valve body (1), the valve seat (2) being provided with a sealing surface at one end of the valve core (3) for sealing against the end of the valve core (3), characterized in that: One end of the valve core (3) away from the valve seat (2) is provided with a pressure receiving end surface, so that the valve core (3) is pressed towards the sealing surface of the valve seat (2) after receiving the medium pressure through the pressure receiving end surface.

6. A pipe valve for irrigation according to claim 5, characterized in that: The outer side wall of the valve core (3) is provided with a thread, the valve body (1) is rotatably provided with a transmission gear ring (4), the transmission gear ring (4) is sleeved on the valve core (3), the inner side wall of the transmission gear ring (4) is threadedly connected with the outer side wall of the valve core (3), the outer side wall of the valve body (1) is provided with a driving motor (5) at a position close to the transmission gear ring (4), the rotating shaft of the driving motor (5) is coaxially and rotatably provided with a driving gear (6), the driving gear (6) is engaged with the transmission gear ring (4), and an active gap is left between the threads of the inner side wall of the transmission gear ring (4) and the threads of the outer side wall of the valve core (3), so as to allow the valve core (3) to be translated towards the valve seat (2) under the driving of the pressure receiving end surface.

7. A pipe valve for irrigation according to claim 6, characterized in that: The distance of the active gap is between 0.2mm and 1mm.

8. A pipe valve for irrigation according to claim 6 or 7, characterised in that: The valve seat (2) comprises a second fixing member (21) and a sealing gasket (22), the second fixing member (21) is fixedly installed on the valve body (1), one side of the second fixing member (21) facing the valve core (3) is a sealing surface, the sealing gasket (22) is installed on the sealing surface and used for sealing against the end surface of the valve core (3), and the sealing gasket (22) is made of soft material.

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