Valves and irrigation systems

Abstract

The utility model provides a kind of valve and irrigation system, it is related to valve sealing technical field.The valve includes valve body, valve core and sealing structure.Valve body is formed with hollow valve cavity.Valve core is movably arranged in valve cavity, sealing structure is arranged in valve cavity, for sealing inside valve body.Sealing structure includes sheath and sealing ring, sheath is installed in valve body, sealing ring is set with sheath;Sealing ring and sheath form anti-disengagement cooperation, to prevent sealing ring and sheath disengagement, sealing ring and valve core sealing abut.Through sealing ring and sheath are set into anti-disengagement cooperation, can avoid sealing ring disengagement relative to sheath, can prevent the edge of sealing ring from flanging or sealing position variation in the case where water pressure impact or ball core scraping extrusion, greatly improve the firmness of sealing ring, reduce the probability of sealing failure, to effectively improve the service life of valve.The irrigation system includes the valve, and has all the functions of the valve.

Description

Technical Field

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

[0002] Valves, such as electric ball valves, are devices controlled by electric actuators and are widely used in industries such as agriculture, chemical, petroleum, power, and metallurgy. For example, valves can be used in agricultural irrigation. Generally, a sealing ring is installed inside the valve to achieve a sealing effect.

[0003] However, existing sealing rings are prone to failure, which will greatly reduce the service life of valves. Utility Model Content

[0004] This utility model provides a valve and irrigation system. By setting the sealing ring and the protective sleeve to an anti-detachment fit, the sealing ring can be prevented from detaching from the protective sleeve. This greatly improves the firmness of the sealing ring, reduces the probability of sealing failure, and thus effectively extends the service life of the valve.

[0005] The embodiments of this utility model can be implemented as follows: An embodiment of this utility model provides a valve, which includes: A valve body having a hollow valve cavity; A valve core, the valve core being movably disposed within the valve cavity; and A sealing structure is disposed in the valve cavity; The sealing structure includes a sleeve and a sealing ring. The sleeve is installed on the valve body, and the sealing ring is fitted to the sleeve. The sealing ring and the sleeve form an anti-detachment fit to prevent the sealing ring from separating from the sleeve, and the sealing ring is in sealing contact with the valve core.

[0006] Optionally, the sheath includes a front and a back side disposed opposite to each other, the front side of the sheath is recessed, the back side of the sheath is mounted on the valve body, and the sealing ring is nested in the front side of the sheath and fits against the front side of the sheath.

[0007] Optionally, the sheath has perforations, and the sealing ring includes an annular layer, an embedded portion, and a sealing portion arranged sequentially. The sealing part is located on the front side of the sheath and seals against the valve core; the annular layer is located on the back side of the sheath, and the embedded part is located in the perforation, thereby forming an anti-detachment fit.

[0008] Optionally, the annular layer, the embedded portion, and the sealing portion are integrally formed.

[0009] Optionally, the sealing portion is fitted to the front side of the sheath; and / or, the embedding portion is fitted to the perforation; and / or, the annular layer is fitted to the back side of the sheath.

[0010] Optionally, the annular layer is in sealing contact with the valve body.

[0011] Optionally, an annular groove is formed on the back of the sheath, and the annular layer is located in the annular groove; The back surface of the annular layer is flush with at least a portion of the back surface of the sheath.

[0012] Optionally, a first annular protrusion is formed on the back of the sheath, and a first annular groove is provided on the valve body, with the first annular protrusion installed in the first annular groove. The first annular protrusion is spaced apart from the annular embedding groove.

[0013] Optionally, there are multiple perforations, which are evenly distributed around the circumference of the sheath; there are multiple embedded parts, which are correspondingly arranged with the multiple perforations.

[0014] Optionally, the sealing part has an annular first sealing edge and a second sealing edge, both of which are in sealing contact with the valve core.

[0015] Optionally, the sealing ring has an annular sealing recess, and the first sealing edge and the second sealing edge are spaced apart through the sealing recess.

[0016] Optionally, the sealing surface forming the first sealing edge is two planes with a certain included angle; or, the sealing surface forming the first sealing edge is an arc surface; or, the sealing surface forming the second sealing edge is two planes with a certain included angle; or, the sealing surface forming the second sealing edge is an arc surface.

[0017] Optionally, the sealing ring further includes an undercut portion connected to the side of the sealing portion away from the annular layer; The front end of the sheath is embedded in the buckle portion to form an anti-slip fit.

[0018] Optionally, the outer peripheral wall of the sheath is provided with a second annular protrusion, and the valve body is provided with a second annular groove, with the second annular protrusion installed in the second annular groove; The undercut portion is sealed and abuts against the second annular protrusion.

[0019] Optionally, the second annular groove is a stepped groove, the second annular protrusion is installed at a deeper position of the second annular groove, and the undercut is installed at a shallower position of the second annular groove.

[0020] Optionally, the valve body is provided with a port communicating with the valve cavity, and the sealing structure is arranged around the port.

[0021] Optionally, the sheath is made of a non-flexible material, while the sealing ring is made of a flexible material.

[0022] An embodiment of this utility model also provides an irrigation system, which includes an irrigation pipeline and the aforementioned valve, wherein the valve is disposed on the irrigation pipeline.

[0023] The beneficial effects of the valve and irrigation system of this utility model embodiment include, for example: The valve includes a valve body, a valve core, and a sealing structure. The valve body forms a hollow valve cavity. The valve core is movably disposed in the valve cavity to open and close the valve. The sealing structure is disposed in the valve cavity to seal the interior of the valve body. The sealing structure includes a sleeve and a sealing ring. The sleeve is installed on the valve body, and the sealing ring is fitted snugly against the sleeve. The sealing ring and the sleeve form an anti-detachment fit to prevent the sealing ring from separating from the sleeve, and the sealing ring seals against the valve core.

[0024] By setting the sealing ring and the sheath to an anti-disengagement fit, the sealing ring can be prevented from detaching from the sheath, and the sheath is more secure and stable inside the valve cavity. By setting the sealing ring and the sheath to an anti-disengagement fit structure, the edge of the sealing ring can be prevented from turning over or the sealing position can be changed under the impact of water pressure or the scraping and squeezing of the ball core, which greatly improves the firmness of the sealing ring and effectively extends the service life of the valve.

[0025] The irrigation system includes the valve, which has all the functions of the valve. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the valve from a first-view perspective provided in this embodiment; Figure 2 This is a schematic diagram of the valve from a second perspective provided in this embodiment; Figure 3 This is a structural schematic diagram of the valve from a third-view perspective provided in this embodiment; Figure 4 for Figure 3 A magnified view of a portion of point A in the middle; Figure 5 This is a structural schematic diagram of the valve from a fourth-view perspective provided in this embodiment; Figure 6 This is a schematic diagram of the sealing structure provided in this embodiment; Figure 7 for Figure 6 Schematic diagram of the middle sheath; Figure 8 for Figure 6 A schematic diagram of the structure of the middle sealing ring.

[0028] Icons: 100-Valve; 10-Valve body; 11-Port; 101-Valve cavity; 102-First annular groove; 103-Second annular groove; 20-Valve core; 21-Media flow channel; 30-Sealing structure; 31-Sheath; 311-Perforation; 312-First annular protrusion; 313-Annular embedding groove; 314-Second annular protrusion; 32-Sealing ring; 321-Annular layer; 322-Embedding part; 323-Sealing part; 3231-First sealing edge; 3232-Second sealing edge; 3233-Sealing recess; 324-Unlocking part. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0035] As described in the background section, valves, such as electric ball valves, are devices controlled by electric actuators and are widely used in industries such as agriculture, chemical, petroleum, power, and metallurgy. For example, valves can be used in agricultural irrigation. Generally, sealing rings are installed inside valves to achieve a sealing effect. However, existing sealing rings are prone to failure, which greatly reduces the service life of the valve.

[0036] Researchers have found that the main causes of seal failure include: Existing sealing rings are prone to separation from the inner wall of the valve body due to long-term water pressure impact or scouring, as well as scraping and squeezing by the valve core. This can lead to sealing failure. The flaking caused by scouring, scraping and squeezing during long-term use will affect the service life of the valve.

[0037] In view of this, please refer to Figures 1-8 The valve 100 and irrigation system provided in this embodiment can effectively improve the technical problems mentioned above. By setting the sealing ring 32 and the sleeve 31 in an anti-detachment fit, the valve 100 can prevent the sealing ring 32 from detaching from the sleeve 31. The sleeve 31 is relatively firm and stable inside the valve cavity. By setting the sealing ring 32 and the sleeve 31 in an anti-detachment fit structure, it can prevent the edge of the sealing ring 32 from turning over or the sealing position from changing under water pressure impact or ball core scraping and squeezing. This greatly improves the firmness of the sealing ring 32, reduces the probability of sealing failure, and thus effectively improves the service life of the valve 100.

[0038] The irrigation system includes irrigation pipes and the aforementioned valve 100, which is installed on the irrigation pipes. The valve 100 can control the opening and closing of the irrigation pipes and the flow rate of the liquid transported in the irrigation pipes.

[0039] The valve 100 can be a ball valve, which controls the on / off flow of the conveying medium or the opening degree of the ball valve through rotation. Of course, the valve 100 can also be other types, such as a gate valve or a globe valve.

[0040] The valve 100 will be described in detail below with reference to the accompanying drawings.

[0041] Please refer to Figures 1-5 The valve 100 includes a valve body 10, a valve core 20, and a sealing structure 30. The valve body 10 forms a hollow valve cavity 101. The valve core 20 is movably disposed in the valve cavity 101 to realize the opening and closing of the valve 100. The sealing structure 30 is disposed in the valve cavity 101 for sealing the interior of the valve body 10. The sealing structure 30 includes a sleeve 31 and a sealing ring 32. The sleeve 31 is installed on the valve body 10, and the sealing ring 32 is fitted to the sleeve 31. The sealing ring 32 and the sleeve 31 form an anti-detachment fit, thereby preventing the sealing ring 32 from detaching from the sleeve 31, and the sealing ring 32 seals against the valve core 20.

[0042] By setting the sealing ring 32 and the sleeve 31 to an anti-disengagement fit, the sealing ring 32 can be prevented from detaching from the sleeve 31. The sleeve is relatively firm and stable inside the valve cavity. By setting the sealing ring and the sleeve to an anti-disengagement fit structure, the edge of the sealing ring can be prevented from turning over or the sealing position can be changed under the impact of water pressure or the scraping and squeezing of the ball core. This greatly improves the firmness of the sealing ring 32, reduces the probability of sealing failure, and effectively extends the service life of the valve 100.

[0043] Valve 100 may also include a controller, which can control the opening and closing of valve 100 and regulate the flow and pressure of valve 100. The controller may include a motor and a transmission device, which is connected to the valve core 20 for transmission, so that the motor can drive the valve core 20 to rotate through the transmission device.

[0044] Optionally, the sheath 31 is made of a non-flexible material, while the sealing ring 32 is made of a flexible material.

[0045] Understandably, the sheath 31 is made of a relatively hard material, such as hard plastic, which makes it more stable after being installed on the valve body 10, thus protecting the sealing ring 32. The sealing ring 32 is made of a softer material, such as silicone or rubber, and has a certain degree of elasticity. After being set on the sheath 31 through an anti-detachment fit, it is more secure. At the same time, the elastic sealing ring 32 can elastically abut against the valve core 20, thus maintaining a good seal.

[0046] In one embodiment of this application, the valve body 10 is provided with a port 11 communicating with the valve cavity 101, and the sealing structure 30 is arranged around the port 11.

[0047] Combination Figures 1-5 In this valve 100, there are two ports 11, which are symmetrically distributed on both sides of the valve body 10. Understandably, one port 11 is the water inlet port 11 and the other port 11 is the water outlet port 11. In order to improve the sealing performance, both ports 11 are equipped with corresponding sealing structures 30.

[0048] Combination Figures 2-3 As illustrated in the diagram, the valve core 20 has a medium flow channel 21. During the rotation of the valve core 20, the left and right ends of the medium flow channel 21 are connected to two pipe ports 11 respectively, thus opening the valve 100. Continuing to rotate the valve core 20 will reduce the flow rate of the medium until the valve 100 is completely closed.

[0049] By surrounding the pipe opening 11 with a sealing structure 30, and providing a corresponding sealing structure 30 for each of the two pipe openings 11, the two sealing structures 30 can ensure a better seal at both the inlet and outlet positions.

[0050] The following will combine Figures 4-8 The sealing structure 30 is described in detail. It should be noted that... Figures 4-8 Taking the relative positions as an example, the "front" mentioned below can be understood as the side surface of the sealing structure 30 facing the valve core 20, or the right side. The "back" mentioned below can be understood as the side surface of the sealing structure 30 facing away from the valve core 20, or the left side.

[0051] In one embodiment of this application, the sheath 31 includes a front side and a back side disposed opposite to each other. The front side of the sheath 31 is recessed, and the back side of the sheath 31 is mounted on the valve body 10. The sealing ring 32 is nested in the front side of the sheath 31 and fits against the front side of the sheath 31.

[0052] The sealing ring 32 can be strengthened by the recessed design of the sheath 31 and the nested fit of the sealing ring 32.

[0053] In one embodiment of this application, the sheath 31 has a perforation 311, and the sealing ring 32 includes an annular layer 321, an embedded portion 322, and a sealing portion 323 arranged sequentially. The sealing part 323 is disposed on the front side of the sheath 31 and seals against the valve core 20; the annular layer 321 is disposed on the back side of the sheath 31, and the embedded part 322 is disposed in the perforation 311, thereby forming an anti-detachment fit.

[0054] Understandably, the structure of the sealing ring 32 is similar to a dumbbell. Due to the presence of a relatively small embedded part 322 in the middle, the annular layer 321 is located on the back of the sheath 31, and the sealing ring 32 is located on the front of the sheath 31. Through the perforation 311 of the sheath 31, the embedded part 322 can firmly hold the sealing part 323, making it difficult for the sealing part 323 to detach from the sheath 31, thereby enhancing the firmness and stability of the sealing ring 32 in the valve cavity 101.

[0055] In this application, the sealing ring 32 is configured in such a way that it is snapped onto the protective sleeve 31, thus achieving an anti-detachment effect. In a specific implementation, a hole can also be made in the sealing ring 32 so that the protective sleeve 31 is snapped onto the sealing ring 32.

[0056] There are many ways to prevent detachment. For example, multiple barbed structures can be set on the surface of the sleeve 31. After the sealing ring 32 is attached to the sleeve 31, the barbed structures pierce into multiple positions of the sealing ring 32, thereby achieving the effect of preventing detachment. Alternatively, the surface of the sleeve 31 can be roughened to create an uneven surface, and a layer of adhesive can be applied to this surface. Finally, the sealing ring 32 can be attached to the surface of the sleeve 31. Due to the uneven surface, the adhesion of the adhesive can be improved, thus enhancing the detachment prevention effect.

[0057] In one embodiment of this application, the annular layer 321, the embedded portion 322, and the sealing portion 323 are integrally formed. This integrally formed structural design makes the entire sealing ring 32 more stable and robust.

[0058] When specifically preparing the sealing structure 30, optionally, an integral encapsulation process can be used to mold the sealing ring 32 onto the sheath 31, so that the sealing ring 32 forms an integral structure. Combination Figures 4-8 In this embodiment, the sealing part 323 is fitted to the front of the sheath 31; the embedded part 322 is fitted to the perforation 311; and the annular layer 321 is fitted to the back of the sheath 31.

[0059] By using a three-part bonding configuration, the sealing performance can be improved. Of course, in practice, only one part or two parts can be bonded together.

[0060] In one embodiment of this application, combined with Figure 4 The annular layer 321 is in sealing contact with the valve body 10. In other words, the back side of the annular layer 321 is in sealing contact with the valve body 10. The annular layer 321 has good elasticity, so a sealing fit can be achieved through elastic contact, thereby improving the sealing performance at this position.

[0061] To improve stability and sealing, in one embodiment of this application, an annular groove 313 is formed on the back of the sheath 31, and an annular layer 321 is located in the annular groove 313. The embedded form of the annular layer 321 can limit its position and reduce the probability of liquid leakage through the joint between the two.

[0062] Furthermore, the back surface of the annular layer 321 is flush with at least a portion of the back surface of the sheath 31. For example, in the figure, most of the back surface of the sheath 31 is flat, and similarly, the back surface of the annular layer 321 is also flat. This flush design allows the entire structure to seal against the valve body 10, improving the sealing performance.

[0063] In one embodiment of this application, a first annular protrusion 312 is formed on the back side of the sheath 31, and a first annular groove 102 is provided on the valve body 10. The first annular protrusion 312 is installed in the first annular groove 102. In other words, by using the cooperation between the first annular protrusion 312 and the first annular groove 102, the sheath 31 can be more securely fixed to the valve body 10.

[0064] To facilitate the demonstration of the first annular groove 102, Figure 5 The sealing structure 30 is concealed to better showcase its structure.

[0065] Furthermore, the first annular protrusion 312 and the annular embedding groove 313 are spaced apart. This ensures the structural strength of the first annular protrusion 312 and improves installation stability. On the other hand, the annular layer 321 embedded in the annular embedding groove 313 can independently form a sealing contact with the valve body 10, improving sealing performance.

[0066] In order to achieve better structural uniformity and structural stability of the sealing ring 32, in one embodiment of this application, there are multiple perforations 311, which are evenly distributed around the circumference of the sheath 31; there are multiple embedded parts 322, which are correspondingly provided with the multiple perforations 311.

[0067] In addition, in order to improve the sealing effect with the valve core 20, in one embodiment of this application, the sealing part 323 has an annular first sealing edge 3231 and a second sealing edge 3232, both of which are in sealing contact with the valve core 20.

[0068] Optionally, combined Figure 8 The outer contours of the first sealing edge 3231 and the second sealing edge 3232 are both obtuse angles. In some cases, after the sealing structure 30 is installed on the valve body 10, the contact between the first sealing edge 3231 and the second sealing edge 3232 and the valve core 20 can be line contact.

[0069] In one embodiment of this application, the sealing surfaces forming the first sealing edge 3231 are two planes with a certain included angle, and the first sealing edge 3231 is located at the corner of the two planes. Similarly, optionally, the sealing surfaces forming the second sealing edge 3232 are two planes with a certain included angle, and the second sealing edge 3232 is located at the corner of the two planes.

[0070] Specifically, the two planes have a certain angle between them, and the angle formed by the two planes is the first sealing edge or the second sealing edge.

[0071] In other embodiments, the sealing surface forming the first sealing edge 3231 may also be an arc surface. Alternatively, the sealing surface forming the second sealing edge 3232 may also be an arc surface. Understandably, the corners of the two surfaces forming the first sealing edge 3231 or the second sealing edge 3232 have a certain curvature.

[0072] It should be noted that the reference Figure 8 The aforementioned "certain angle" can be an obtuse angle, such as 100°-150°, and optionally, 100°, 110°, 120°, 130°, 140°, 150°, etc. can be selected.

[0073] In one embodiment of this application, the sealing ring 32 has an annular sealing recess 3233, and the first sealing edge 3231 and the second sealing edge 3232 are spaced apart by the sealing recess 3233.

[0074] Two-stage sealing can be achieved through the first sealing edge 3231 and the second sealing edge 3232, enhancing the sealing effect. Furthermore, when the sealing structure 30 is assembled onto the valve body 10, after both the first sealing edge 3231 and the second sealing edge 3232 are in sealing contact with the valve core 20, the sealing recess 3233 forms an annular sealing channel. In certain scenarios, when the first sealing edge 3231 and the second sealing edge 3232 are compressed, this sealing channel forms a high-pressure environment. In cases where leakage is possible, this high-pressure environment can, to some extent, prevent external liquid from entering the sealing channel, thus improving the sealing performance.

[0075] Combination Figures 4-8 In one embodiment of this application, the sealing ring 32 further includes a snap-fit ​​portion 324, which is connected to the side of the sealing portion 323 away from the annular layer 321. The front end of the sheath 31 is embedded in the snap-fit ​​portion 324, thereby forming an anti-detachment fit.

[0076] Specifically, the sealing ring 32 is nested on the front (concave) side of the sleeve 31, and the sealing ring 32 is tightly attached to the sleeve 31. The undercut portion 324 wraps around the front end of the sleeve 31. When subjected to water pressure impact or scraping and squeezing by the ball core, the undercut portion 324 of the sealing ring 32 has a pulling force on the sealing portion 323, thereby enhancing the firmness between the sealing ring and the sleeve, so that the sealing ring will not be flipped due to water flow impact or scraping and squeezing by the valve core.

[0077] By configuring the sealing ring into a structure including annular layer 321, embedded part 322 and buckle part 324, the sealing ring can play a dual anti-loosening role on the front and back of the sheath 31, so that the sealing ring will not be flipped due to water flow impact or valve core scraping and squeezing.

[0078] The undercut portion 324 essentially completely covers the front end of the sheath 31. Thus, after installation onto the valve body 10, the valve core 20 seals against the undercut portion 324, essentially avoiding direct contact with the sheath 31, thereby improving sealing performance. Furthermore, because the undercut portion 324 possesses a certain degree of flexibility (elasticity), compared to the valve core 20 directly contacting the rigid sheath 31, using the undercut portion 324 to contact the valve core 20 can also extend the service life of the sealing structure 30.

[0079] To further enhance structural robustness and sealing performance, in one embodiment of this application, the outer peripheral wall of the sheath 31 is provided with a second annular protrusion 314, and the valve body 10 is provided with a second annular groove 103, with the second annular protrusion 314 installed in the second annular groove 103. This structural design allows for better installation stability between the outer peripheral wall of the sheath 31 and the valve body 10.

[0080] Furthermore, the undercut portion 324 and the second annular protrusion 314 form a sealing contact. This sealing contact prevents leakage at this point, and the design of the second annular protrusion 314 also provides a certain degree of restraint during the formation of the undercut portion 324.

[0081] In order to achieve better installation and positioning of the sealing structure 30, in one embodiment of this application, the second annular groove 103 is a stepped groove, the second annular protrusion 314 is installed at a deeper position of the second annular groove 103, and the undercut 324 is installed at a shallower position of the second annular groove 103.

[0082] Combination Figures 4-8 As illustrated in the figure, the left side of the second annular groove 103 is relatively deeper, while the right side is relatively shallower. This allows the second annular protrusion 314 to be embedded on the left side of the second annular groove 103, and the undercut 324 to be embedded on the right side. The stepped groove design enhances the limiting effect and improves the secure installation of the sealing structure 30 on the valve body 10.

[0083] The valve 100 provided in this embodiment has at least the following advantages: The sealing structure 30 adopts an anti-detachment design, which makes it difficult for the sealing ring 32 and the sleeve 31 to separate. The sealing ring 32 is not prone to folding or displacement, which can effectively improve the sealing performance and extend the service life of the valve 100.

[0084] Specifically, the anti-detachment design, which features a centrally located embedded part 322, an annular layer 321 and a sealing part 323 on either side, and an anti-detachment design with an inverted buckle part 324, can improve the anti-detachment effect.

[0085] In summary, the valve 100 and irrigation system provided in this embodiment include a valve body 10, a valve core 20, and a sealing structure 30. The valve body 10 forms a hollow valve cavity 101. The valve core 20 is movably disposed in the valve cavity 101 to realize the opening and closing of the valve 100. The sealing structure 30 is disposed in the valve cavity 101 for sealing the interior of the valve body 10. The sealing structure 30 includes a sleeve 31 and a sealing ring 32. The sleeve 31 is installed on the valve body 10, and the sealing ring 32 is fitted to the sleeve 31. The sealing ring 32 and the sleeve 31 form an anti-detachment fit, thereby preventing the sealing ring 32 from detaching from the sleeve 31, and the sealing ring 32 seals against the valve core 20.

[0086] By setting the sealing ring 32 and the sheath 31 to be anti-detached, the sealing ring 32 can be prevented from detaching from the sheath 31. This greatly improves the firmness of the sealing ring 32, reduces the probability of sealing failure, and thus effectively extends the service life of the valve 100.

[0087] The irrigation system includes the valve 100, which has all the functions of the valve 100.

[0088] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A valve (100), characterized in that, include: Valve body (10), wherein the valve body (10) forms a hollow valve cavity (101); Valve core (20), said valve core (20) being movably disposed in the valve cavity (101); and A sealing structure (30) is disposed in the valve cavity (101). The sealing structure (30) includes a sleeve (31) and a sealing ring (32). The sleeve (31) is installed on the valve body (10), and the sealing ring (32) is fitted to the sleeve (31). The sealing ring (32) and the sleeve (31) form an anti-detachment fit to prevent the sealing ring (32) from detaching from the sleeve (31). The sealing ring (32) is sealed and abuts against the valve core (20).

2. The valve (100) according to claim 1, characterized in that, The sheath (31) includes a front and a back side that are arranged opposite to each other. The front side of the sheath (31) is recessed. The back side of the sheath (31) is installed on the valve body (10). The sealing ring (32) is nested in the front side of the sheath (31) and fits against the front side of the sheath (31).

3. The valve (100) according to claim 1, characterized in that, The sheath (31) has a perforation (311), and the sealing ring (32) includes an annular layer (321), an embedded part (322) and a sealing part (323) arranged in sequence. The sealing part (323) is disposed on the front side of the sheath (31) and seals against the valve core (20); the annular layer (321) is disposed on the back side of the sheath (31), and the embedded part (322) is disposed in the perforation (311), thereby forming an anti-detachment fit.

4. The valve (100) according to claim 3, characterized in that, The annular layer (321), the embedded part (322), and the sealing part (323) are integrally formed.

5. The valve (100) according to claim 3, characterized in that, The sealing part (323) is fitted to the front of the sheath (31); and / or, the embedding part (322) is fitted to the perforation (311); and / or, the annular layer (321) is fitted to the back of the sheath (31).

6. The valve (100) according to claim 3, characterized in that, The annular layer (321) is in sealed contact with the valve body (10).

7. The valve (100) according to claim 3, characterized in that, The back of the sheath (31) has an annular groove (313) formed therein, and the annular layer (321) is located in the annular groove (313). The back surface of the annular layer (321) is flush with at least a portion of the back surface of the sheath (31).

8. The valve (100) according to claim 7, characterized in that, The back of the sheath (31) is also formed with a first annular protrusion (312), and the valve body (10) is provided with a first annular groove (102). The first annular protrusion (312) is installed in the first annular groove (102). The first annular protrusion (312) and the annular embedded groove (313) are spaced apart.

9. The valve (100) according to claim 3, characterized in that, The number of perforations (311) is multiple, and the multiple perforations (311) are evenly distributed around the circumference of the sheath (31); the number of embedded parts (322) is multiple, and the multiple embedded parts (322) are correspondingly provided with the multiple perforations (311).

10. The valve (100) according to claim 3, characterized in that, The sealing part (323) has an annular first sealing edge (3231) and a second sealing edge (3232), both of which are in sealing contact with the valve core (20).

11. The valve (100) according to claim 10, characterized in that, The sealing ring (32) has an annular sealing recess (3233), and the first sealing edge (3231) and the second sealing edge (3232) are spaced apart by the sealing recess (3233).

12. The valve (100) according to claim 10, characterized in that, The sealing surface forming the first sealing edge (3231) is two planes with a certain angle; or, the sealing surface forming the first sealing edge (3231) is an arc surface; or, the sealing surface forming the second sealing edge (3232) is two planes with a certain angle; or, the sealing surface forming the second sealing edge (3232) is an arc surface.

13. The valve (100) according to any one of claims 3-12, characterized in that, The sealing ring (32) further includes a snap-back portion (324), which is connected to the side of the sealing portion (323) away from the annular layer (321); The front end of the sheath (31) is embedded in the buckle (324) to form an anti-detachment fit.

14. The valve (100) according to claim 13, characterized in that, The outer peripheral wall of the sheath (31) is provided with a second annular protrusion (314), and the valve body (10) is provided with a second annular groove (103). The second annular protrusion (314) is installed in the second annular groove (103). The undercut portion (324) is sealed and abuts against the second annular protrusion (314).

15. The valve (100) according to claim 14, characterized in that, The second annular groove (103) is a stepped groove, the second annular protrusion (314) is installed at a deeper position of the second annular groove (103), and the undercut part (324) is installed at a shallower position of the second annular groove (103).

16. The valve (100) according to any one of claims 1-12, characterized in that, The valve body (10) is provided with a port (11) communicating with the valve cavity (101), and the sealing structure (30) is provided around the port (11).

17. The valve (100) according to any one of claims 1-12, characterized in that, The sheath (31) is made of non-flexible material, while the sealing ring (32) is made of flexible material.

18. An irrigation system, characterized in that, It includes an irrigation pipeline and a valve (100) as described in any one of claims 1-17, wherein the valve (100) is disposed on the irrigation pipeline.

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