A water-saving butterfly valve applied to an agricultural irrigation system

Abstract

The utility model discloses a water -saving butterfly valve for agricultural irrigation system, including the valve shell, the valve shell top middle part fixed mounting has the connecting column, the connecting column top fixed mounting has the transmission part, the valve shell inboard middle part inserts and is connected with the rotating shaft, the rotating shaft outside both sides department all fixed mounting has the disc, the transmission part outside bottom fixed sleeve joint has the limit ring, the limit ring outside slide sleeve joint has the thread sleeve, the connecting column outside top fixed sleeve joint has the thread column, the utility model discloses a guide rail, positioning stand, rotation tooth and locating piece, can lock the screw connection, avoid the screw reverse loosening caused by the valve opening and closing torque, always maintain the coaxial degree of valve stem and valve pipe, also can prevent its because fluid pressure fluctuation or external force touch self -turning, under the double protection, the butterfly piece and the valve shell sealing surface can long -term close adhesion, from the root, prevent fluid leakage, ensure that water -saving function stable play.

Description

Technical Field

[0001] This utility model relates to the field of water-saving butterfly valve technology, specifically a water-saving butterfly valve applied to agricultural irrigation systems. Background Technology

[0002] Water-saving butterfly valves for agricultural irrigation systems are valve devices specifically designed for agricultural irrigation scenarios, combining flow control and water conservation. The valve body is made of weather-resistant cast iron or engineering plastics, with nominal diameters mostly ranging from DN50 to DN300 to adapt to field branch pipes and main pipes. The valve plate is equipped with a EPDM rubber soft seal. The drive method is mainly manual or electric. The core is to precisely adjust the flow area by rotating the valve plate 90°. With the built-in flow sensor or pressure regulating component, it can stably control the irrigation flow and avoid over-irrigation waste caused by water pressure fluctuations. It also has the characteristics of quick opening and closing, and supports linkage with irrigation controllers to achieve timed and quantitative automatic irrigation. Some models are equipped with anti-clogging filters and drain outlets, and are suitable for irrigation water sources such as well water and river water. Installation and maintenance are simple, and it is widely used in irrigation systems for fields, orchards, greenhouses and other fields, effectively reducing water resource loss.

[0003] To this end, China Patent Network published a butterfly valve with application number 202020538492.0 that facilitates water flow adjustment. By rotating a cylinder, the regulating plate is rotated. At the same time, the angle of rotation of one end of the rotating rod is compared with the angle of the side of the circular pipe to achieve precise adjustment of the water flow. By removing and unfolding the vertical and horizontal rods from the through groove, the length of the power arm is increased, making it easier and less strenuous to rotate the cylinder and adjust the angle of the regulating plate. The operation is simple and saves time and effort.

[0004] Although existing butterfly valves on the market meet users' needs to a certain extent, they still have certain defects during use. The specific problems are as follows: existing butterfly valves do not add an anti-rotation structure to the transmission structure and valve pipe connection of the water-saving butterfly valve, nor do they add an anti-rotation mechanism to the rotor. This will cause multiple adverse effects during use. The torque generated by the valve opening and closing can easily cause the threaded connection to rotate in the opposite direction and loosen. The rotor will also rotate on its own under the influence of fluid pressure fluctuations or external force. The dual effect will accelerate the loosening of the threads, damage the coaxiality of the valve stem and valve pipe, and cause serious failure of the seal between the butterfly plate and the valve seat, resulting in a large amount of fluid leakage and complete loss of water-saving function. Based on this, this utility model designs a water-saving butterfly valve for agricultural irrigation systems to solve the above problems. Utility Model Content

[0005] This utility model provides a water-saving butterfly valve for agricultural irrigation systems, which can effectively solve the problems mentioned in the background art. The existing butterfly valves do not add an anti-rotation structure to the transmission structure and valve pipe connection of the water-saving butterfly valve, nor do they add an anti-rotation mechanism to the rotor. During use, multiple adverse effects will occur. The torque generated by the valve opening and closing can easily cause the threaded connection to rotate in the opposite direction and loosen. The rotor will also rotate on its own under the influence of fluid pressure fluctuations or external force. The dual effect will accelerate the loosening of the threads, damage the coaxiality of the valve stem and valve pipe, and lead to serious failure of the seal between the butterfly plate and the valve seat, resulting in a large amount of fluid leakage and complete loss of water-saving function.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water-saving butterfly valve for agricultural irrigation systems, comprising a valve body, a connecting column fixedly installed at the top center of the valve body, a transmission component fixedly installed at the top of the connecting column, a rotating shaft rotatably connected to the inner center of the valve body, discs fixedly installed on both sides of the outer side of the rotating shaft, and a limit ring fixedly sleeved on the bottom outer side of the transmission component.

[0007] Preferably, a threaded sleeve is slidably sleeved on the outer side of the limiting ring, a threaded column is fixedly sleeved on the top of the outer side of the connecting column, guide rails are fixedly installed at equal intervals on the bottom of the outer side of the transmission component, a positioning frame is slidably sleeved on the outer side of the four guide rails, and a rotating wheel is rotatably connected to the middle of one side of the transmission component.

[0008] Preferably, the outer side of the disc is movably connected to the inner side of the valve housing, and flanges are fixedly installed on both sides of the valve housing.

[0009] Preferably, the inner side of the threaded sleeve is threaded to the outer side of the threaded column, and the longitudinal section of the guide rail is U-shaped.

[0010] Preferably, limit posts are fixedly installed on both sides of the bottom end of the positioning frame, and the limit posts are engaged with the inner side of the threaded sleeve.

[0011] Preferably, a rotating tooth is fixedly sleeved on the outer side of the rotating wheel, a positioning block is rotatably connected to the middle of one side of the transmission component, a magnetic sheet is embedded and fixedly installed at the top center of the positioning block, and an iron sheet is embedded and fixedly installed at the top of one side of the transmission component.

[0012] Preferably, the bottom end of the positioning block is engaged with the inner side of the rotating tooth, and the top end of the magnetic sheet is magnetically attracted to the outer side of the iron sheet.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By using guide rails, positioning frames, rotating teeth, and positioning blocks, the threaded connection can be locked, avoiding the reverse loosening of the threads caused by the valve opening and closing torque, and always maintaining the coaxiality of the valve stem and valve pipe. It can also prevent the valve from rotating on its own due to fluid pressure fluctuations or external force. With this double protection, the disc and valve body sealing surface can be tightly fitted for a long time, eliminating fluid leakage from the source and ensuring the stable operation of the water-saving function. At the same time, the threaded connection without loosening can ensure transmission efficiency, and the fixed wheel without deviation provides a clear reference for opening adjustment, which can accurately control the fluid flow and meet the water-saving and flow control needs in different scenarios. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the rotating shaft of this utility model; Figure 3 This is a schematic diagram of the installation structure of the threaded column of this utility model; Figure 4 This is a schematic diagram of the installation structure of the positioning block of this utility model; The following are the labels in the diagram: 1. Valve housing; 2. Connecting column; 3. Transmission component; 4. Rotating shaft; 5. Disc; 6. Limiting ring; 7. Threaded sleeve; 8. Threaded column; 9. Guide rail; 10. Positioning frame; 11. Rotating wheel; 12. Rotating gear; 13. Positioning block; 14. Magnetic plate; 15. Iron plate. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Example: Figure 1-4As shown, this utility model provides a technical solution: a water-saving butterfly valve for agricultural irrigation systems, including a valve body 1. Flanges are fixedly installed on both sides of the valve body 1 to facilitate fixed connection between the valve body 1 and external pipelines. A connecting column 2 is fixedly installed at the top center of the valve body 1, and a transmission component 3 is fixedly installed at the top of the connecting column 2. A rotating shaft 4 is rotatably connected to the inner center of the valve body 1. The bottom end of the transmission component 3 is snapped to the top end of the rotating shaft 4, thereby enabling the rotating shaft 4 to rotate during the rotation of the rotating wheel 11. Discs 5 are fixedly installed on both sides of the outer side of the rotating shaft 4. The outer side of the discs 5 is movably connected to the inner side of the valve body 1 to limit the position of the discs 5. A limit ring 6 is fixedly sleeved on the bottom of the outer side of the transmission component 3.

[0018] A threaded sleeve 7 is slidably sleeved on the outer side of the limiting ring 6, and a threaded post 8 is fixedly sleeved on the top of the outer side of the connecting post 2. The inner side of the threaded sleeve 7 is threadedly connected to the outer side of the threaded post 8, which enables the connecting post 2 to be fixedly connected to the transmission component 3. Guide rails 9 are fixedly installed at equal intervals on the bottom of the outer side of the transmission component 3. The longitudinal section of the guide rails 9 is U-shaped. A positioning frame 10 is slidably sleeved on the outer side of the four guide rails 9. Limiting posts are fixedly installed on both sides of the bottom end of the positioning frame 10. The limiting posts are snapped into the inner side of the threaded sleeve 7, which can fix the position of the threaded sleeve 7 after rotation. A rotating wheel 11 is rotatably connected to the middle of one side of the transmission component 3.

[0019] A rotating tooth 12 is fixedly sleeved on the outer side of the rotating wheel 11. A positioning block 13 is rotatably connected to the middle of one side of the transmission component 3. The bottom end of the positioning block 13 is engaged with the inner side of the rotating tooth 12, which can fix the position of the rotating wheel 11 after rotation. A magnetic sheet 14 is embedded and fixedly installed in the middle of the top of the positioning block 13. An iron sheet 15 is embedded and fixedly installed in the top of one side of the transmission component 3. The top of the magnetic sheet 14 is magnetically attracted to the outer side of the iron sheet 15, which can fix the position of the positioning block 13 after rotation.

[0020] The operator moves the transmission component 3 so that its bottom end contacts the top end of the connecting column 2. At this time, the operator twists the threaded sleeve 7. During the rotation of the threaded sleeve 7, the inner side of the threaded sleeve 7 slides against the outer side of the limiting ring 6, thus limiting the rotational position of the threaded sleeve 7. Simultaneously, the inner side of the threaded sleeve 7 is threadedly connected to the outer side of the threaded column 8, which is fixedly fitted to the top of the outer side of the connecting column 2, thus fixing the connecting column 2 to the transmission component 3. After the threaded sleeve 7 rotates to the appropriate position, the operator moves the positioning frame 10. During the movement of the positioning frame 10, the inner side of the positioning frame 10 slides against the outer side of the guide rail 9, thus limiting the direction of movement of the positioning frame 10. The bottom end of the positioning frame 10 is fixedly connected to the limiting column, thus moving the position of the limiting column. The bottom end of the limiting column engages with the threaded sleeve 7. On the side, the position of the rotated threaded sleeve 7 can be limited to prevent the threaded sleeve 7 from rotating back, thereby fixing the position of the transmission component 3. Then, the operator twists the rotating wheel 11, and through the transmission component 3, the rotating shaft 4 can be rotated, which in turn can rotate the disc 5 fixedly connected to the outside of the rotating shaft 4. When the rotating wheel 11 rotates to the appropriate position, the operator pulls the positioning block 13, so that the magnetic plate 14 fixedly installed on the inner side of the positioning block 13 is separated from the iron plate 15 fixedly installed on one side of the transmission component 3. At this time, through the rotatable connection between the positioning block 13 and the transmission component 3, the positioning block 13 can be rotated. By the bottom end of the positioning block 13 being engaged with the inner side of the rotating tooth 12 fixedly sleeved on the outer side of the rotating wheel 11, the position of the rotated wheel 11 can be fixed, preventing the rotating wheel 11 from rotating back during use.

[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water-saving butterfly valve for use in agricultural irrigation systems, comprising a valve body (1), characterized in that: A connecting column (2) is fixedly installed at the top center of the valve body (1), and a transmission component (3) is fixedly installed at the top of the connecting column (2). A rotating shaft (4) is embedded and rotatably connected in the middle of the inner side of the valve body (1). Discs (5) are fixedly installed on both sides of the outer side of the rotating shaft (4). A limit ring (6) is fixedly sleeved on the bottom of the outer side of the transmission component (3).

2. The water-saving butterfly valve for agricultural irrigation systems according to claim 1, characterized in that, The limiting ring (6) is slidably sleeved with a threaded sleeve (7), the connecting column (2) is fixedly sleeved with a threaded column (8) on the top of the outside, the transmission component (3) is fixedly installed with guide rails (9) at equal intervals on the bottom of the outside, the four guide rails (9) are slidably sleeved with positioning frames (10) on the outside, and the transmission component (3) is rotatably connected with a wheel (11) on one side of the middle.

3. A water-saving butterfly valve for agricultural irrigation systems according to claim 1, characterized in that, The outer side of the disc (5) is movably connected to the inner side of the valve housing (1), and flanges are fixedly installed on both sides of the valve housing (1).

4. A water-saving butterfly valve for agricultural irrigation systems according to claim 2, characterized in that, The inner side of the threaded sleeve (7) is threadedly connected to the outer side of the threaded column (8), and the longitudinal section of the guide rail (9) is U-shaped.

5. A water-saving butterfly valve for agricultural irrigation systems according to claim 2, characterized in that, The positioning frame (10) has two fixed limit posts installed on both sides of its bottom end, and the limit posts are snapped into the inside of the threaded sleeve (7).

6. A water-saving butterfly valve for agricultural irrigation systems according to claim 2, characterized in that, The outer side of the rotating wheel (11) is fixedly fitted with a rotating tooth (12), and the middle of one side of the transmission component (3) is rotatably connected with a positioning block (13). A magnetic sheet (14) is embedded and fixedly installed at the top center of the positioning block (13), and an iron sheet (15) is embedded and fixedly installed at the top of one side of the transmission component (3).

7. A water-saving butterfly valve for agricultural irrigation systems according to claim 6, characterized in that, The bottom end of the positioning block (13) is engaged with the inside of the rotating tooth (12), and the top end of the magnetic sheet (14) is magnetically attracted to the outside of the iron sheet (15).

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