Adjustable exhaust valve for irrigation pipeline

Abstract

The utility model relates to the field of pressure vessel safety protection, in particular to an adjustable exhaust valve for an irrigation pipeline, which is mounted on the irrigation pipeline and comprises an exhaust valve upper part and an exhaust valve lower part which are detachably connected and are hollow cylinders. The exhaust valve upper part is communicated with the exhaust valve lower part, an exhaust outlet is formed in the exhaust valve upper part, the central screw rod sequentially penetrates through the elastic device, the exhaust device, the rubber coating iron and the rubber coating iron limiting plate from top to bottom, the elastic device is installed on the exhaust valve lower part, and the elastic device is installed on the exhaust valve lower part. And a locking device is arranged at the lower end of the central screw rod, so that the problems that at the present stage, air cannot be removed due to blockage or sealing of the interior of a pipeline, negative pressure is formed in the pipeline, the water supply efficiency is reduced, local faults of the pipeline are caused, and adjustable exhaust valves on the market are complex in structure and high in manufacturing cost are solved.

Description

Technical Field

[0001] The utility model relates to the field of safety protection of pressure vessels, in particular to an adjustable exhaust valve for irrigation pipelines. Background Art

[0002] An exhaust valve is a valve that can automatically release pressure after a container or pipeline reaches a predetermined pressure. It is divided into fixed pressure exhaust valves and pressure adjustable exhaust valves. Exhaust valves are indispensable safety protection devices in pressure vessels and pressure pipeline equipment.

[0003] In irrigation pipes, when the pipes begin to fill with water, if the air cannot be removed from the pipes due to blockage or closure, negative pressure will form in the pipes, reducing the water supply efficiency and causing local failures of the pipes. In order to ensure that the exhaust valve can achieve good results, it is necessary to ensure that the exhaust speed of the exhaust valve matches the water intake. Most of the adjustable exhaust valves on the market have complex structures and high manufacturing costs.

[0004] The present application proposes an adjustable exhaust valve for irrigation pipes, which can adjust the exhaust volume of the exhaust valve by controlling the spring tensioning pressure inside the exhaust valve to meet different irrigation needs. At the same time, it has a simple structure and low cost. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable exhaust valve for irrigation pipes to solve the problem that the air cannot be discharged due to blockage or closure inside the pipes at present, and negative pressure is formed in the pipes, which reduces the water supply efficiency and causes local failure of the pipes. The adjustable exhaust valves on the market have complex structures and high manufacturing costs. The technical solutions adopted by the utility model are as follows:

[0006] An adjustable exhaust valve for an irrigation pipe is installed on the irrigation pipe, comprising an exhaust valve upper portion and an exhaust valve lower portion, the exhaust valve upper portion and the exhaust valve lower portion are detachably connected, the exhaust valve upper portion and the exhaust valve lower portion are both hollow cylinders, the exhaust valve upper portion and the exhaust valve lower portion are communicated, the exhaust valve upper portion is provided with an exhaust outlet, and further comprises a central screw, an exhaust device, an elastic device, rubber-coated iron and a rubber-coated iron limiting plate, the central screw passes through the elastic device, the exhaust device, the rubber-coated iron and the rubber-coated iron limiting plate from top to bottom in sequence, the elastic device is installed at the exhaust valve lower portion, and a locking device is provided at the lower end of the central screw.

[0007] It is further defined that an upper cover shell is provided on the upper part of the exhaust valve, and a lower cover shell is provided on the lower part of the exhaust valve, at least two mounting grooves are provided at the upper edge of the upper cover shell, and at least two sealing bosses are provided at the lower end, at least two sealing grooves are provided at the upper edge of the lower cover shell, and the exhaust device is provided with at least two protrusions, and the protrusions are correspondingly mounted in cooperation with the sealing grooves, and the exhaust device is clamped at the upper end of the lower cover shell, and the sum of the height of the protrusion and the height of the sealing bosses matches the height of the sealing groove, and also includes an exhaust valve limit plate, and the exhaust valve limit plate is provided with at least two limiting parts, and the limiting parts are correspondingly arranged and mounted in the mounting grooves, and a fixing nut is provided on the center screw above the exhaust valve limit plate.

[0008] It is further defined that the exhaust device is an exhaust circular plate, and the exhaust circular plate is provided with exhaust holes.

[0009] It is further defined that the elastic device includes a spring, a spring limiting plate and a spring mounting seat, the middle part of the rubber-coated iron and the middle part of the exhaust device are both provided with mounting through holes, the spring mounting seat is connected to the rubber-coated iron and the middle part of the exhaust device through the mounting through holes, the center screw passes through the spring limiting plate, the spring mounting seat and the rubber-coated iron in sequence, the spring is sleeved on the spring mounting seat between the spring limiting plate and the exhaust device, and a locking nut is provided on the center screw above the spring limiting plate.

[0010] It is further defined that the locking device is a locking nut.

[0011] The beneficial effects of the utility model compared with the current technology are:

[0012] When water is supplied inside the pipeline, the air flow inside the pipeline starts to flow and exerts pressure on the pipeline. The rubber-coated iron of the exhaust valve is subjected to the air pressure and moves upward. After adjusting the spring pressure by loosening the nut, the pressure inside the pipeline is just enough to discharge the gas inside the pipeline and push the rubber-coated iron to the exhaust port to form a balance, thereby ensuring the sealing effect and exhausting the gas inside the pipeline. By controlling the spring tensioning pressure inside the exhaust valve, the exhaust volume of the exhaust valve can be adjusted to meet the needs of different water supply under different irrigation conditions, thereby ensuring water supply efficiency and pipeline safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional schematic diagram of the upper cover shell of the utility model;

[0015] Figure 3It is a three-dimensional schematic diagram of the lower cover of the utility model;

[0016] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 5 It is a schematic diagram of the coordination between the exhaust disc and the lower cover.

[0018] The markings in the figure correspond respectively to: 1-exhaust valve upper part, 11-upper cover shell, 111-installation groove, 112-sealing boss, 2-exhaust valve lower part, 21-lower cover shell, 211-sealing groove, 3-exhaust valve limit plate, 31-limiting part, 4-exhaust outlet, 5-center screw, 6-exhaust disc, 61-protrusion, 7-rubber-coated iron, 8-rubber-coated iron limit plate, 9-fixing nut, 10-spring, 12-spring limit plate, 13-spring mounting seat, 14-elastic nut, 15-locking nut, 16-exhaust hole. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the utility model, the technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments. Example

[0020] like Figure 1-Figure 5As shown, an adjustable exhaust valve for irrigation pipe is installed on the irrigation pipe, including an exhaust valve upper part 1, an exhaust valve lower part 2 and an exhaust valve limiting plate 3, the exhaust valve upper part 1 and the exhaust valve lower part 2 are detachably connected, the exhaust valve upper part 1 and the exhaust valve lower part 2 are hollow cylinders, the exhaust valve upper part 1 and the exhaust valve lower part 2 are communicated, the exhaust valve upper part 1 is provided with an exhaust outlet 4, the exhaust valve upper part 1 is provided with an upper cover shell 11, the exhaust valve lower part 2 is provided with a lower cover shell 21, the upper end edge of the upper cover shell 11 is provided with three mounting grooves 111, and the lower end is provided with three sealing bosses 112, and also includes a central screw 5, an exhaust disc 6, an elastic device, a rubber-coated iron 7 and a rubber-coated iron limiting plate 8, the central screw 5 passes through the elastic device, the exhaust disc 6, the rubber-coated iron 7 and the rubber-coated iron limiting plate 8 from top to bottom in sequence, the exhaust disc 6 is provided with three convex The protrusion 61 and the three exhaust holes 16, three sealing grooves 211 are arranged at the upper edge of the lower cover shell 21, the protrusion 61 is installed in a corresponding manner with the sealing groove 211, the exhaust disc 6 is clamped at the upper end of the lower cover shell 21, the sum of the height of the protrusion 61 and the height of the sealing boss 112 matches the height of the sealing groove 211, the protrusion 61 and the sealing boss 112 are both located in the sealing groove 211, and can form a seal between the exhaust valve upper part 1 and the exhaust valve lower part 2, the exhaust valve limit plate 3 is provided with three limit parts 31, the limit part 31 is arranged in a corresponding manner with the installation groove 111 and is installed in the installation groove 111, a fixing nut 9 is arranged on the center screw 5 above the exhaust valve limit plate 3, and the fixing nut 9 is used to fix the connection between the exhaust valve upper part 1 and the exhaust valve lower part 2 to make it precisely fit;

[0021] The elastic device includes a spring 10, a spring limiting plate 12 and a spring mounting seat 13. The middle of the rubber-coated iron 7 and the middle of the exhaust disc 6 are both provided with mounting through holes. The spring mounting seat 13 is connected to the middle of the rubber-coated iron 7 and the exhaust disc 6 through the mounting through holes and is fixed on the rubber-coated iron 7. The center screw 5 passes through the spring limiting plate 12, the spring mounting seat 13 and the rubber-coated iron 7 in sequence. The spring 10 is sleeved on the spring mounting seat 13 between the spring limiting plate 12 and the exhaust disc 6. A loose nut 14 is provided on the center screw 5 above the spring limiting plate 12. The loose nut 14 is used to adjust the tension of the spring 10. A locking nut 15 is provided at the lower end of the center screw 5 to limit the rubber-coated iron 7.

[0022] Install it on the irrigation pipe, adjust the pressure of the spring 10 by adjusting the tension nut 14, when water is supplied inside the irrigation pipe, the air flow inside the pipe starts to flow, exerting pressure on the pipe, and the rubber-coated iron 7 in the exhaust valve is affected by the air pressure and moves upward, pushing the rubber-coated iron 7 to the exhaust disc 6. The pressure inside the pipe can just discharge the gas inside the pipe through the exhaust hole 16, and the gas reaches the exhaust valve upper part 1 from the lower part 2 of the exhaust valve and is discharged from the exhaust outlet 4. At this time, the rubber-coated iron 7 hits the exhaust disc 6 to form a balance, ensuring the sealing effect, and the gas inside the pipe has been discharged. In order to ensure that the exhaust valve can achieve a good effect, it is necessary to ensure that the exhaust speed of the exhaust valve matches the water inlet. By controlling the tensioning pressure of the tension spring inside the exhaust valve, the exhaust volume of the exhaust valve is adjusted to meet the needs of different water supply under different irrigation conditions and ensure water supply efficiency and pipeline safety.

[0023] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] The above is a detailed introduction to an adjustable exhaust valve for irrigation pipes provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the utility model, several improvements and modifications can be made to the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An adjustable exhaust valve for an irrigation pipe, installed on an irrigation pipe, comprising an exhaust valve upper part (1) and an exhaust valve lower part (2), wherein the exhaust valve upper part (1) and the exhaust valve lower part (2) are detachably connected, the exhaust valve upper part (1) and the exhaust valve lower part (2) are both hollow cylinders, the exhaust valve upper part (1) and the exhaust valve lower part (2) are connected, the exhaust valve upper part (1) is provided with an exhaust outlet (4), and is characterized in that: It also includes a central screw (5), an exhaust device, an elastic device, a rubber-coated iron (7) and a rubber-coated iron limit plate (8), wherein the central screw (5) passes through the elastic device, the exhaust device, the rubber-coated iron (7) and the rubber-coated iron limit plate (8) in sequence from top to bottom, the elastic device is mounted on the lower part (2) of the exhaust valve, and a locking device is arranged at the lower end of the central screw (5).

2. The adjustable exhaust valve for irrigation pipe according to claim 1, characterized in that: The upper part (1) of the exhaust valve is provided with an upper cover shell (11), and the lower part of the exhaust valve is provided with a lower cover shell (21); at least two mounting grooves (111) are provided at the upper edge of the upper cover shell (11), and at least two sealing bosses (112) are provided at the lower end; at least two sealing grooves (211) are provided at the upper edge of the lower cover shell (21); the exhaust device is provided with at least two protrusions (61), and the protrusions (61) are installed in a corresponding manner with the sealing grooves (211); the exhaust device is snap-fitted to the exhaust device. At the upper end of the lower cover shell (21), the sum of the height of the protruding portion (61) and the height of the sealing boss (112) matches the height of the sealing groove (211), and further comprises an exhaust valve limit plate (3), wherein the exhaust valve limit plate (3) is provided with at least two limit portions (31), wherein the limit portions (31) are arranged in a corresponding manner to the mounting groove (111) and are mounted in the mounting groove (111), and a fixing nut (9) is provided on the central screw (5) above the exhaust valve limit plate (3).

3. The adjustable exhaust valve for irrigation pipe according to claim 2, characterized in that: The exhaust device is an exhaust circular plate (6), and the exhaust circular plate (6) is provided with an exhaust hole (16).

4. The adjustable exhaust valve for irrigation pipe according to claim 1, characterized in that: The elastic device comprises a spring (10), a spring limiting plate (12) and a spring mounting seat (13). The middle of the rubber-coated iron (7) and the middle of the exhaust device are both provided with mounting through holes. The spring mounting seat (13) is connected to the rubber-coated iron (7) and the middle of the exhaust device through the mounting through holes and is fixed on the rubber-coated iron (7). The central screw (5) passes through the spring limiting plate (12), the spring mounting seat (13) and the rubber-coated iron (7) in sequence. The spring (10) is sleeved on the spring mounting seat (13) between the spring limiting plate (12) and the exhaust device. A loose nut (14) is provided on the central screw (5) above the spring limiting plate (12).

5. The adjustable exhaust valve for irrigation pipe according to claim 1, characterized in that: The locking device is a locking nut (15).

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