Water valve and irrigation system

Abstract

The embodiment of the invention provides a water valve and an irrigation system, and relates to the technical field of water valves. The water valve comprises a valve body, a valve element and an actuator, the valve body is arranged outside the valve element, the valve element comprises a rotating shaft and a valve element body which are connected, the rotating shaft is connected with the actuator, and the actuator is used for driving the valve element to rotate relative to the valve body; the water valve further comprises a second sealing ring and an anti-sticking ring, the rotating shaft is sleeved with the second sealing ring, and the anti-sticking ring is connected between the second sealing ring and the rotating shaft in an abutting mode. By means of the design of the second sealing ring and the anti-sticking ring, the valve body can be prevented from being stuck to the second sealing ring when the valve body is formed through the anti-sticking ring, in this way, after forming, in the rotating process of the valve element, the second sealing ring is not prone to being damaged to cause water leakage, and meanwhile the good sealing effect can be achieved.

Description

[0001] This application is a divisional application of the original application with the filing date of November 15, 2023, the application number of 202311523645.9, and the invention name of "Water valve and irrigation system". TECHNICAL FIELD

[0002] The application relates to the technical field of water valves, in particular to a water valve and an irrigation system. BACKGROUND

[0003] In the prior art, the valve core of the water valve is prone to water leakage during rotation. SUMMARY

[0004] The application provides a water valve and an irrigation system, which can reduce the probability of water leakage.

[0005] Embodiments of the application can be implemented as follows: In a first aspect, the application provides a water valve, comprising a valve body, a valve core and an actuator, wherein, The valve body is arranged outside the valve core, the valve core comprises a rotating shaft and a valve core body connected together, and the rotating shaft is connected with the actuator, and the actuator is used to drive the valve core to rotate relative to the valve body. The water valve further comprises a second sealing ring and an anti-sticking ring, the second sealing ring is sleeved on the rotating shaft, and the anti-sticking ring is abutted between the second sealing ring and the rotating shaft.

[0006] In an optional embodiment, the anti-sticking ring is made of ABS material.

[0007] In an optional embodiment, the second sealing ring is an O-shaped sealing ring.

[0008] In an optional embodiment, the anti-sticking ring is integrally arranged with the valve body.

[0009] In an optional embodiment, the valve body is provided with a rotating shaft hole, the rotating shaft is rotatably arranged in the rotating shaft hole and protrudes from the valve body.

[0010] In an optional embodiment, the valve body has a liquid outlet pipe, the water valve further comprises a first sealing ring, and the first sealing ring is abutted between the valve core and the liquid outlet pipe.

[0011] In an optional embodiment, the valve body has a liquid outlet pipe, the water valve further comprises a first plug, and the first plug is connected with the liquid outlet pipe.

[0012] In an optional embodiment, the valve body has a liquid inlet pipe, the water valve further comprises a second plug, and the second plug is connected with the liquid inlet pipe.

[0013] In an optional embodiment, the water valve further includes an actuator connected to the valve core, the actuator being used to drive the valve core to rotate.

[0014] In an optional embodiment, the valve body is wrapped around the outside of the valve core.

[0015] In an optional embodiment, the valve body is made of PVC material.

[0016] In an optional embodiment, the valve core has a liquid inlet, a valve core cavity, and a liquid outlet connected in sequence; the valve body has a liquid outlet and a liquid inlet, the liquid inlet and the liquid inlet being connected.

[0017] Secondly, the present invention provides an irrigation system including a water valve as described in any of the foregoing embodiments.

[0018] In an optional embodiment, the irrigation system further includes a water hose, a water outlet pile, and a buried pipe. The water valve includes an inlet and an outlet. The buried pipe is connected to the inlet of the water outlet pile, the outlet of the water outlet pile is connected to the inlet of the water valve, and the outlet of the water valve is connected to the water hose.

[0019] The beneficial effects of the water valve and irrigation system of the present invention include, for example: This invention provides a water valve comprising a valve body, a valve core, and an actuator. The valve body is disposed outside the valve core, which includes a rotating shaft and a valve core body connected to each other. The rotating shaft is connected to the actuator, which drives the valve core to rotate relative to the valve body. The water valve also includes a second sealing ring and an anti-sticking ring. The second sealing ring is sleeved on the rotating shaft, and the anti-sticking ring abuts against the rotating shaft. By utilizing the design of the second sealing ring and the anti-sticking ring, the anti-sticking ring can prevent the valve body from sticking to the second sealing ring during valve body molding. Thus, after molding, the second sealing ring is less likely to break and leak during valve core rotation, while also providing a better sealing effect.

[0020] The present invention provides an irrigation system including the water valve described above, and the irrigation system has all the functions of the water valve described above. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention 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.

[0022] Figure 1A cross-sectional view of a water valve provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the valve core, first insert, second insert, first sealing ring, and anti-sticking ring provided in an embodiment of the present invention; Figure 3 This is a schematic diagram showing the valve core placed in the mold before the valve body is formed, as provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of a valve body formed on the outside of the valve core, provided in an embodiment of the present invention; Figure 5 This is a schematic diagram showing the valve core in the open state during the manufacturing process of the water valve provided in an embodiment of the present invention; Figure 6 This is a schematic diagram showing the valve core in a closed state during the manufacturing process of the water valve provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of a five-way valve provided in an embodiment of the present invention.

[0023] Icons: 100-Valve core; 110-Shaft; 120-Valve core body; 121-Liquid inlet; 122-Valve core inner cavity; 123-Liquid outlet; 200-Valve body; 210-Outlet port; 220-Inlet port; 300-Molding die; 310-Mold core; 301-Valve body molding chamber; 400-First insert; 500-Second insert; 600-First sealing ring; 700-Second sealing ring; 800-Anti-sticking ring; 910-First plug; 920-Second plug; 10-Sealing component; 11-Media inlet. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the 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 invention without inventive effort are within the scope of protection of the invention.

[0026] 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.

[0027] In the description of this invention, 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 product of this invention is usually placed, they are only for the convenience of describing this invention 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 invention.

[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0030] Current water valves are often modular, meaning the valve body is not a single piece but rather assembled from multiple components. This allows for easy assembly of the valve core within the valve body. However, modular valve bodies result in significant material waste, low structural efficiency, and increased assembly costs.

[0031] This embodiment provides a water valve with an integrally formed valve body, which has high structural efficiency. The valve body does not hold the valve core tightly, and the valve core requires less torque during rotation, which can reduce the power consumption of the electric actuator.

[0032] Generally, the valve body is directly injection molded outside the valve core. After the valve body is formed, during the cooling process, the valve core is located inside the valve body. During the cooling process, the valve body shrinks in size and hugs the valve core, which causes the valve core and sealing ring to be compressed and deformed, resulting in water leakage between the valve core and the sealing ring. At the same time, the rotational torque is too large, resulting in high power consumption requirements of the electric actuator.

[0033] In view of this, please refer to Figures 1-7 The water valve and irrigation system provided in the embodiments of the present invention can solve this problem, and will be described in detail below.

[0034] Please refer to Figure 1 An embodiment of the present invention provides an irrigation system that can be applied to agricultural irrigation. The irrigation system includes a water valve, a water hose, a water outlet pile, and a buried pipe. The buried pipe is generally installed underground and is connected to the inlet of the water outlet pile. The outlet of the water outlet pile is connected to the liquid inlet 220 of the water valve. The liquid outlet 210 of the water valve is then connected to the water hose. The water hose is generally installed above ground and is used to transport liquid to the crop area that needs to be irrigated.

[0035] In this embodiment, the water valve is an irrigation water valve, and a three-way ball valve can be selected. In other embodiments, the water valve can also be a five-way valve (e.g., Figure 7 (As shown).

[0036] The water valve includes a valve core 100 and a valve body 200. The valve body is wrapped around the outside of the valve core. The valve core 100 has a liquid inlet 121, a valve core inner cavity 122, and a liquid outlet 123 connected in sequence. The valve body 200 is integrally formed on the outside of the valve core 100 and there is a gap between the valve body 200 and the valve core 100. The valve body 200 has a liquid outlet 210 and a liquid inlet 220. The liquid inlet 220 and the liquid inlet 121 are connected. The valve core 100 can be in an open or closed state relative to the valve body 200. In the open state, the liquid outlet 123 faces the liquid outlet 210, and the valve core inner cavity 122 and the liquid outlet 210 are connected. In the closed state, the valve core inner cavity 122 and the liquid outlet 210 are blocked.

[0037] Because a certain gap is maintained between the valve core 100 and the valve body 200, the valve body 200 will not hold the valve core 100 tightly, which greatly reduces the friction of the valve core 100 when rotating, thereby reducing the torque required for the valve core 100 to rotate, and reducing the power consumption requirements of the electric actuator, thus meeting the low power consumption requirements.

[0038] In this embodiment, the water valve can be provided with two outlet pipes, each of which is connected to a water hose. In order to facilitate the connection between the water hose and the water outlet pile, the on / off state of the water valve can be controlled. When the water valve is open, the two water hoses can be connected at the same time to achieve water supply.

[0039] To facilitate the rotation of the valve core 100 of the water valve, the water valve also includes an actuator, which is an electric actuator. The electric actuator is integrated with a control box to facilitate the control of the electric actuator to open or close the water valve. The actuator is connected to the rotating shaft 110 of the valve core 100 (described in detail below), and the actuator is used to drive the valve core 100 to rotate.

[0040] At this point, the connection between the two water hoses and the outlet pile can be achieved by controlling an electric actuator, thus reducing costs.

[0041] The valve core 100 includes a rotating shaft 110 and a valve core body 120 connected to each other. The rotating shaft 110 is connected to the actuator. The valve core body 120 has a liquid inlet 121, a valve core inner cavity 122 and a liquid outlet 123 connected in sequence. There is a gap between the valve core body 120 and the valve body 200. When the valve core body 120 rotates relative to the valve body 200, the liquid outlet 123 faces the liquid outlet 210 so that the valve core inner cavity 122 and the liquid outlet 210 are connected.

[0042] In this embodiment, the distance between the valve core 100 and the valve body 200 is in the range of 0.1mm to 2mm. For example, the distance between the outer wall of the valve core body 120 and the valve body 200 can be 0.1mm, 1mm or 2mm.

[0043] It is easy to understand that the valve core 100 can be integrally molded by a mold, and the valve body 200 can also be molded by a mold forming process, which saves assembly costs. In addition, the valve body 200 can directly wrap the valve core 100 with the smallest possible shape, without any excess material being wasted. The material utilization rate is high, which reduces the cost of the water valve. The valve body 200 is made of PVC (polyvinyl chloride) material.

[0044] It should be noted that, in this embodiment, the main body of the valve core 100 is spherical, and its outer dimensions are larger than the dimensions of the outlet port 210 and the inlet port 220 of the valve body 200.

[0045] To improve sealing performance, the water valve also includes two first sealing rings 600, which abut against the valve core 100 and the two outlet ports 210.

[0046] In one embodiment, there are multiple outlet ports 210 and multiple liquid outlets 123, with each outlet port 210 and liquid outlet 123 corresponding one-to-one. In another embodiment, there are multiple outlet ports 210 and only one liquid outlet 123, so that one outlet port 210 can be selectively opened by rotating the valve core 100.

[0047] In addition, the water valve also includes a second sealing ring 700 and an anti-sticking ring 800. The second sealing ring 700 is sleeved on the rotating shaft 110, and the anti-sticking ring 800 abuts between the second sealing ring 700 and the rotating shaft 110. The anti-sticking ring 800 is made of ABS (acrylonitrile-butadiene-styrene plastic).

[0048] The second sealing ring 700 is an O-ring. The anti-sticking ring 800 can prevent the high-temperature PVC material of the valve body 200 from sticking to the second sealing ring 700 during injection molding of the valve body 200. This would prevent the O-ring from sticking to the valve body 200 when the valve core 100 rotates, causing the O-ring to break and leak. The anti-sticking ring 800 is bonded to the valve body 200 as a whole. In this way, the second sealing ring 700 fills the space between the valve core 100 and the anti-sticking ring 800, providing a sealing function at the rotating shaft 110 of the valve core 100.

[0049] The valve body 200 is provided with a pivot hole, and the pivot is rotatably inserted through the pivot hole 110 and protrudes from the valve body 200.

[0050] To facilitate the connection of the water hose, the water valve also includes a first plug 910, which is connected to the outlet pipe 210 by adhesive bonding, and is also connected to the water hose.

[0051] Since the first plug 910 is not integrally formed with the valve body, the valve body can be adapted to various sizes of first plugs. By selecting different sizes of first plugs 910, different sizes of water hoses can be accommodated. To facilitate connection to the outlet post, the water valve also includes a second plug 920. The second plug 920 is connected to the inlet pipe 220 by adhesive bonding, and at the same time, the second plug 920 is connected to the outlet post.

[0052] Because the second plug 920 is not integrally formed with the valve body, the valve body can be adapted to various sizes of the second plug 920. By selecting different sizes of the second plug 920, it can accommodate water outlet piles of different sizes. This allows a single valve body 200 to be equipped with several accessories (different sizes of first plug 910 and second plug 920) suitable for various specifications of water outlet piles and different sizes of water hoses, reducing product development and production costs and simplifying the product.

[0053] Furthermore, it should be noted that in this embodiment, after the valve body 200 is integrally formed on the outside of the valve core, a medium layer is formed on the surface of the valve core 100. The medium layer is located between the inner wall of the valve core and the outer wall of the valve core body of the valve core 100, so as to separate the valve core 100 and the valve body 200.

[0054] After the valve body is formed and is in a state of cooling and shrinkage, a medium layer is formed by filling it with a medium. The medium can be gas or liquid. The gas can be air, and the liquid can be oil.

[0055] Specifically, in order to facilitate the formation of a certain gap between the valve core 100 and the valve body 200, this embodiment also provides a method for manufacturing a water valve, which is used to manufacture the aforementioned water valve.

[0056] Please refer to Figures 2-6 The steps involved in manufacturing a water valve include: An embodiment of the present invention provides a method for manufacturing a water valve, the method comprising: A valve body 200 is formed on the outside of the valve core 100. The valve core 100 has a liquid inlet 121, a valve core cavity 122 and a liquid outlet 123 connected in sequence. The valve body 200 has a liquid outlet 210 and a liquid inlet 220, and the liquid inlet 220 and the liquid inlet 121 are connected. Rotate the valve core 100 to put the valve core 100 in the closed state. A gap space is defined between the outer wall of the valve core 100 and the valve body 200. The gap space is connected to the liquid outlet 123 and blocked from the liquid outlet 210. Medium is injected into the valve core cavity 122 through the liquid inlet 121 so that a medium layer is formed between the valve core 100 and the valve body 200.

[0057] Because a medium layer is filled between the valve core 100 and the valve body 200, the valve body 200 will not tightly hold the valve core 100, and a certain gap is maintained between the valve core 100 and the valve body 200. This greatly reduces the friction of the valve core 100 when rotating, thereby reducing the torque required for the valve core 100 to rotate, and also reducing the power consumption requirements of the electric actuator, thus meeting the low power consumption requirement.

[0058] The step of forming the valve body 200 on the outside of the valve core 100 includes: the valve body 200 is integrally formed on the outside of the valve core 100, forming a wrap around the valve core 100. For example, the valve body 200 can be formed using a molding die 300, which saves assembly costs. Moreover, the valve body 200 wraps the valve core 100 with the smallest possible shape, so no excess material is wasted, resulting in high material utilization and reduced water valve costs.

[0059] The valve core body 120 has a liquid inlet 121, a valve core cavity 122, and a liquid outlet 123 connected in sequence. In one embodiment, the liquid inlet 121 can be located below the valve core body 120, and the liquid outlet 123 can be located on the side of the valve core body 120. There can be one liquid outlet 123, or two, or other quantities.

[0060] It should be noted that when completing the step of forming the valve body 200 on the outside of the valve core 100, one possible situation is that the valve core 100 is in the open state. Here, the open state can be understood as the liquid inlet 220, the valve core inner cavity 122 of the valve core 100, the liquid outlet of the valve core 100 and the liquid outlet 210 being in a connected state, and liquid can flow out of the liquid outlet 210 through the valve core 100.

[0061] Then, the entire valve core 100 can be rotated relative to the valve body 200 by rotating the shaft 110 of the valve core 100. Rotating the valve core 100 creates a gap between the valve core 100 and the valve body 200. At the same time, by rotating the valve core 100, it can be ensured that the liquid outlet (i.e., the liquid outlet 123) of the valve core 100 faces the inner wall of the valve body 200, and the remaining wall surface of the valve core 100 blocks the inlet of the liquid outlet 210. At this time, the valve core 100 is in the closed valve state.

[0062] In one embodiment, a first sealing ring 600 is provided between the outlet port 210 and the valve core 100. When the valve core 100 is in the closed state, the wall surface of the valve core 100 and the outlet port 210 are sealed by the first sealing ring 600. At this time, the gap space is connected to the inner cavity of the valve core 100, and the gap space and the outlet port 210 are sealed by the first sealing ring 600.

[0063] Then, a medium is injected into the inner cavity of the valve core. In one embodiment, the step of injecting the medium into the inner cavity of the valve core through the liquid inlet includes: During the period when the valve body is cooling and contracting, the medium is injected into the inner cavity of the valve core through the liquid inlet.

[0064] For a short period after the valve body is formed, the valve body is in a high-temperature state. At this time, the valve body is in a cooling and shrinking period. Since the shape of the valve body is not completely fixed at this time, the medium can be filled during this period, which can prevent the valve body from shrinking and clamping the valve core. By controlling the pressure, the gap space can also be expanded.

[0065] When the medium is injected into the valve core cavity through the liquid inlet, the pressure of the medium layer can be kept at a stable state, for example, 2.5 kg / cm². 2 Of course, in other embodiments, the pressure value can also be 2 kg / cm. 2 -5 KG / cm 2 The pressure value must be carefully controlled to ensure it is not too low, preventing the valve body from continuously contracting and ultimately causing the valve core to seize. Conversely, the pressure should not be too high, as this would result in an excessive gap between the valve body and the valve core, preventing the subsequent first sealing ring from meeting the sealing requirements.

[0066] At this time, the medium is filled into the inner cavity 122 of the valve core 100. The medium flows into the gap space. Because the gap space is blocked by the outlet port 210, the medium will not flow out of the outlet port 210. In this way, on the one hand, the valve body 200 can be prevented from contracting and tightening the valve core 100. At the same time, the airtightness of the valve body 200 is also tested. If the airtightness is not good, the medium will flow out of the outlet port 210 when the valve is closed.

[0067] In one embodiment, after the medium is filled, the pressure of the medium layer can be maintained for a specific time. The purpose of maintaining the pressure for a specific time is to stabilize the spacing of the gap space and prevent the valve body 200 from retracting and tightening the valve core 100 after the pressure is removed. The range of the specific time can be selected according to the actual situation, for example, it can be between 1 minute and 10 minutes. Preferably, in this embodiment, the pressure of the medium layer can be maintained for 2 minutes.

[0068] After maintaining the pressure of the medium layer for a specific time, the valve body containing the valve core can be cooled. This cooling process can be achieved by immersing the valve body in water.

[0069] It should be noted that the medium here can be understood as a gas (such as air) or a liquid medium such as oil, and a certain pressure needs to be stabilized when filling the medium.

[0070] In addition, please refer to Figure 6 The step of filling the valve core cavity with medium through the liquid inlet includes: A sealing element 10 is provided at the liquid inlet. The sealing element 10 is provided with a medium inlet 11. The medium inlet 11 is connected to the valve core cavity 122. The medium is injected into the valve core cavity 122 through the medium inlet 11.

[0071] Understandably, the sealing element blocks and seals all other locations of the liquid inlet except for the medium inlet. Since the medium inlet is much smaller than the liquid inlet, it facilitates the management of medium filling, such as maintaining the pressure of the medium layer. The shape of the sealing element can be matched to the liquid inlet to form a sealing seal. In one embodiment, the sealing element is a cylindrical structure, and the medium inlet is a hole penetrating the cylindrical structure.

[0072] Furthermore, it should be noted that a first sealing ring 600 is provided between the outlet port and the valve core. The first sealing ring 600 is used to block the gap space and the outlet port when the valve core is in the closed state. After the step of filling the valve core cavity 122 with medium through the liquid inlet 121 to form a medium layer between the valve core 100 and the valve body 200, the water valve manufacturing method further includes: Remove the medium filling pressure to eliminate the medium layer.

[0073] It should be noted that in the step of filling the valve core cavity with medium through the liquid inlet, the medium can be filled into the valve core cavity through the liquid inlet, and the medium increases the gap space.

[0074] After the gap space increases and stabilizes, the medium filling pressure is then removed to eliminate the medium layer.

[0075] Specifically, when the valve body 200 is just completed and is in the cooling process, the valve core 100 is rotated to the closed state, which separates the valve core 100 and the valve body 200 and creates a certain gap. That is, a gap space is defined between the outer wall of the valve core 100 and the valve body 200. At this time, the distance between the outer wall of the valve core body 120 of the valve core 100 and the valve body 200 can be 0.05mm to 1mm.

[0076] For example, the distance between the outer wall of the valve core body 120 and the valve body 200 can be 0.05mm, 0.5mm or 1mm.

[0077] Since the valve body 200 is formed directly on the outside of the valve core 100, the valve core 100 will also be heated. In the closed state, by filling the valve core cavity 122 with medium, the valve core 100 can also be cooled, thus stabilizing the size of the valve core 100.

[0078] Meanwhile, the medium enters the gap space through the liquid outlet 123 of the valve core 100. The pressure generated by the medium prevents the high-temperature valve body 200 from shrinking. At the same time, the inner wall size of the valve body 200 can be increased by increasing the filling pressure, so as to avoid the valve core 100 from being stuck during the cooling process of the valve body 200, so that the rotation torque of the valve core 100 of the final water valve is smaller.

[0079] It is easy to understand that by increasing the charging pressure, the inner wall size of the valve body 200 is increased, and the distance between the inner wall of the valve body 200 and the outer wall of the valve core body 120 will increase to a certain extent. With the increase in clearance space, the distance between the outer wall of the valve core 100 and the valve body 200 is 0.1mm~2mm.

[0080] For example, when there is a gap between the inner wall of the valve body 200 and the outer wall of the valve core body 120, the distance between the outer wall of the valve core body 120 and the valve body 200 can be 0.05mm, 0.5mm or 1mm. When the gap between the inner wall of the valve body 200 and the outer wall of the valve core body 120 increases, the distance between the outer wall of the valve core body 120 and the valve body 200 can be increased to 0.1mm, 1mm or 2mm respectively.

[0081] For easier molding of valve body 200, please refer to... Figure 3 and Figure 4 The specific steps for forming the valve body on the outside of the valve core include: The valve core 100 is placed in the molding die 300. The outer wall of the valve core 100 and the molding die 300 together define the valve body molding chamber 301. Molding material is injected into the valve body molding chamber 301 to form the valve body 200. In one embodiment, the valve body 200 can be made of PVC material.

[0082] It should be noted that, in this embodiment, the mold 300 includes a mold core 310, a first insert, and a second insert.

[0083] The step of injecting molding material into the valve body molding chamber 301 includes: Molding material is injected into the valve body molding chamber 301 through the feed port. The mold 300 has a feed port (not shown in the figure), and the feed port is connected to the valve body molding chamber 301.

[0084] Furthermore, it should be noted that before the step of placing the valve core 100 into the molding die 300, the water valve manufacturing method also includes: A first insert 400 is sealed to the fluid inlet 121 of the valve core 100 and is confined within the mold 300. A second insert 500 is sealed to the fluid outlet 123 of the valve core 100 and is confined within the mold 300.

[0085] Meanwhile, a first sealing ring 600 is provided at the liquid outlet 123 of the valve core 100, and the first sealing ring 600 is abutted against the liquid outlet 123 by the second insert 500.

[0086] In one embodiment, both the first insert 400 and the second insert 500 are cylindrical structures.

[0087] In one embodiment, there are multiple second inserts 500, multiple liquid outlets 123, and multiple liquid outlets 210, with each of the multiple second inserts 500, multiple liquid outlets 123, and multiple liquid outlets 210 corresponding to one another.

[0088] For example, the valve core 100 is the valve core of a three-way ball valve, and the number of the second insert 500, the number of liquid outlets 123, and the number of liquid outlets 210 are all two. Of course, in other embodiments, the valve core 100 can be the valve core 100 of a five-way valve, so the number of the second insert 500, the number of liquid outlets 123, and the number of liquid outlets 210 are all four.

[0089] In one embodiment, the valve core 100 has only one liquid outlet 123, but the valve body 200 can have multiple liquid outlet ports 210. Thus, by rotating the valve core 100, one liquid outlet port 210 can be selectively opened. In this embodiment, during the molding of the valve body 200, each liquid outlet port 210 needs to be equipped with an insert. Each insert abuts against the valve core 100 through a first sealing ring 600. One insert (the second insert) abuts against the liquid outlet 123 of the valve core 100, and the remaining inserts abut against the wall surface of the valve core 100 that is not a liquid outlet.

[0090] In one embodiment, prior to the step of placing the valve core 100 into the mold 300, the water valve manufacturing method further includes: A second sealing ring 700 is fitted onto the rotating shaft 110 of the valve core 100, and then an anti-sticking ring 800 is fitted onto the outside of the second sealing ring 700.

[0091] Specifically, the second sealing ring 700 is an O-ring. The anti-sticking ring 800 prevents the high-temperature PVC material of the valve body 200 from sticking to the second sealing ring 700 during injection molding, thus preventing the O-ring from breaking and leaking when the valve core 100 rotates. The anti-sticking ring 800 is integrally bonded to the valve body 200, thus filling the space between the valve core 100 and the anti-sticking ring 800, providing a seal at the rotating shaft 110 of the valve core 100. The anti-sticking ring 800 is made of ABS material.

[0092] When molding the valve body 200, such as Figure 2As shown, generally, the second sealing ring 700 and the anti-sticking ring 800 can be installed on the valve core 100 first, and then the first insert 400, the second insert 500, and the first sealing ring 600 can be installed. Figures 3-4 As shown, the entire assembly is then placed into mold 300, which can hold valve core 100 in place and fix valve core 100 in place.

[0093] In addition, to facilitate the sealing connection between the valve body 200 and other pipes, the water valve manufacturing method also includes: installing a first plug 910 at the outlet port 210 of the valve body 200; and installing a second plug 920 at the inlet port 220 of the valve body 200.

[0094] Generally, the first plug 910 and the second plug 920 can be installed after the valve body 200 has cooled down.

[0095] In summary, the steps of the water valve manufacturing method provided in this embodiment are as follows: Please refer to Figure 2 First, the valve core 100 is integrally formed by a mold. Then, a second sealing ring 700 is fitted on the rotating shaft 110 of the valve core 100. After that, an anti-sticking ring 800 is fitted on the outside of the second sealing ring 700.

[0096] Subsequently, a sealing connection first insert 400 is installed at the liquid inlet 121 of the valve core 100, a first sealing ring 600 is set at the liquid outlet 123 of the valve core 100, and then a sealing connection second insert 500 is installed.

[0097] Next, please refer to Figure 3 and Figure 4 The valve core 100 is placed in the molding mold, and the valve core injection molding process is carried out, that is, the molding material is injected into the valve body molding chamber 301 through the feed port.

[0098] After injection molding, please refer to Figure 5 and Figure 6 The valve body containing the valve core is removed from the molding mold. At this time, the valve body is at a high temperature. By rotating the valve core shaft, the valve core is put into a closed state, and a gap space is created.

[0099] Next, a sealing element is installed at the liquid inlet of the valve body. The sealing element has a medium inlet, which is connected to the inner cavity of the valve core. During the cooling and contraction period of the valve body, gaseous medium is injected into the inner cavity of the valve core through the medium inlet, and the pressure of the medium layer is kept at a stable state, for example, 2.5 kg / cm². 2 .

[0100] After maintaining the pressure of the medium layer for 2 minutes, the valve body is placed in water for cooling.

[0101] In summary, because a certain gap is maintained between the valve core 100 and the valve body 200, the valve body 200 does not tightly grip the valve core 100, which greatly reduces the friction of the valve core 100 during rotation, thereby reducing the torque required for the valve core 100 during rotation and reducing the power consumption requirements of the electric actuator, thus meeting the low power consumption requirement.

[0102] The irrigation system includes the aforementioned water valve, and the irrigation system has all the functions of the aforementioned water valve.

[0103] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A water valve, characterized in that, It includes the valve body, valve core, and actuator, among which, The valve body (200) is located outside the valve core (100). The valve core (100) includes a rotating shaft (110) and a valve core body (120) connected to each other. The rotating shaft (110) is connected to the actuator, which is used to drive the valve core (100) to rotate relative to the valve body (200). The water valve also includes a second sealing ring (700) and an anti-sticking ring (800). The second sealing ring (700) is sleeved on the rotating shaft (110), and the anti-sticking ring (800) abuts between the second sealing ring (700) and the rotating shaft (110).

2. The water valve according to claim 1, characterized in that, The anti-stick ring (800) is made of ABS material.

3. The water valve according to claim 1, characterized in that, The second sealing ring (700) is an O-ring.

4. The water valve according to claim 1, characterized in that, The anti-stick ring (800) is integrally bonded to the valve body (200).

5. The water valve according to claim 1, characterized in that, The valve body (200) is provided with a pivot hole, and the pivot (110) is rotatably inserted through the pivot hole and protrudes from the valve body (200).

6. The water valve according to any one of claims 1-5, characterized in that, The valve body (200) has a liquid outlet (210), and the water valve further includes a first sealing ring (600), which abuts between the valve core (100) and the liquid outlet (210).

7. The water valve according to any one of claims 1-5, characterized in that, The valve body (200) has a liquid outlet (210), and the water valve further includes a first plug (910) connected to the liquid outlet (210).

8. The water valve according to any one of claims 1-5, characterized in that, The valve body (200) has an inlet port (220), and the water valve also includes a second plug (920) connected to the inlet port (220).

9. The water valve according to any one of claims 1-5, characterized in that, The water valve also includes an actuator connected to the valve core (100), which is used to drive the valve core (100) to rotate.

10. The water valve according to any one of claims 1-5, characterized in that, The valve body (200) is wrapped around the outside of the valve core (100).

11. The water valve according to any one of claims 1-5, characterized in that, The valve body (200) is made of PVC material.

12. The water valve according to any one of claims 1-5, characterized in that, The valve core (100) has a liquid inlet (121), a valve core cavity (122) and a liquid outlet (123) connected in sequence; the valve body (200) has a liquid outlet (210) and a liquid inlet (220), and the liquid inlet (220) and the liquid inlet (121) are connected.

13. An irrigation system, characterized in that, Includes the water valve as described in any one of claims 1-12.

14. The irrigation system according to claim 13, characterized in that, The irrigation system also includes a water hose, a water outlet pile, and a buried pipe. The water valve includes an inlet (220) and an outlet (210). The buried pipe is connected to the inlet of the water outlet pile, the outlet of the water outlet pile is connected to the inlet (220) of the water valve, and the outlet (210) of the water valve is connected to the water hose.

Images