Floating body valve element and air valve

Abstract

The utility model discloses a floating body valve element and an air valve. The floating body valve element comprises a plastic floating barrel and a plastic valve clack, the plastic floating barrel and the plastic valve clack are connected through a connecting assembly, the connecting assembly comprises an upper connecting part located on the plastic valve clack and a lower connecting part located on the plastic floating barrel, and the upper connecting part and the lower connecting part are connected in a matched mode. The stop valve further comprises a limiting strip, the limiting strip is embedded between the upper connecting part and the lower connecting part, and a gap is formed between the limiting strip and the upper connecting part or the lower connecting part, so that radial and axial displacement spaces are relatively formed between the plastic floating barrel and the plastic valve clack. And a limiting strip is further arranged between the upper connecting part and the lower connecting part, so that the plastic floating barrel and the plastic valve clack are connected more firmly and stably. Meanwhile, the size of the radial and axial relative displacement space between the plastic floating barrel and the plastic valve clack is limited by the limiting strip, so that the air valve is more sensitive in reaction in the micro-exhaust process, and the air valve can exhaust air in time.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a float valve core and an air valve. Background Technology

[0002] As a key component in fluid pipeline systems, the air valve's core function is to regulate the dynamic balance of gas within the pipeline, ensuring the safe and stable operation of the system. Specifically, during the pipeline filling phase, the air valve quickly discharges accumulated air to avoid air resistance and ensure fluid transport; when the pipeline pressure drops suddenly, it draws in external air to prevent negative pressure cavities caused by liquid column separation, thereby eliminating the water hammer effect; and during system operation, it continuously removes gas released from the liquid in the pipeline, ensuring the normal operation of the pipeline system.

[0003] However, existing air valve float or float structure designs are complex and costly. They often employ a mechanical structure with a stainless steel float and a cylindrical guide sleeve, requiring high precision machining of metal parts. Furthermore, long-term exposure to water flow impacts can lead to corrosion and wear, resulting in sealing failure and gas leakage. Secondly, some air valves use only simple snap-fit ​​or threaded connections between the upper and lower floats, which are prone to detachment under pipeline pressure fluctuations or fluid impacts, causing blockage of the micro-vent holes or loss of airtightness.

[0004] In summary, existing air valves still need optimization in terms of structural design, material properties, and guiding stability. Utility Model Content

[0005] To address some problems in the existing technology, this utility model provides a float valve core and an air valve. In this solution, the plastic valve disc of the air valve and the float are connected to each other, and the connection between the two is more reliable and stable, improving the stability of the air valve's exhaust process.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A float valve core for an air valve includes a plastic float and a plastic valve disc, the plastic float and the plastic valve disc being connected by a connecting assembly, the connecting assembly including an upper connecting portion on the plastic valve disc and a lower connecting portion on the plastic float, the upper connecting portion and the lower connecting portion being mutually connected.

[0008] It also includes a limiting strip, which is embedded between the upper connecting part and the lower connecting part, and there is a gap between the limiting strip and the upper connecting part or the lower connecting part, so that there is a radial and axial displacement space between the plastic float and the plastic valve disc.

[0009] In this design, both the float and valve disc are made of plastic. Compared to stainless steel, plastic floats and valve discs are lower in cost, more structurally stable, and less prone to causing air valve failure. A limiting strip is also installed between the upper and lower connecting parts of the plastic float and valve disc to ensure a more secure and stable connection, preventing the upper and lower connecting parts from detaching and improving the stability of the air valve's micro-venting process. The limiting strip also limits the radial and axial relative displacement space between the plastic float and valve disc, making the air valve more responsive during micro-venting and enabling it to expel gas promptly.

[0010] In one embodiment, the limiting strip is elastic, which facilitates the installation of the limiting strip.

[0011] In one embodiment, the limiting strip has a rectangular cross-section, which facilitates the processing of the limiting strip.

[0012] Preferably, the upper connecting part is a boss protruding from the side of the plastic valve disc, with one end of the boss extending in a direction away from or near the center of the valve disc to form a limiting platform; the lower connecting part is a groove recessed on one side of the plastic float, with the boss and groove engaging. The upper and lower connecting parts have simple structures and are easy to process and form.

[0013] As a further improvement, a side hole communicating with the groove is opened on one side of the plastic float for the installation of the limiting strip.

[0014] As a further improvement, the upper connecting part is arranged around the axial center of the plastic valve disc. Several auxiliary holes are spaced apart on the upper connecting part around the axial center of the plastic valve disc. A micro-exhaust valve seat is provided on the plastic valve disc, and a micro-exhaust hole is provided on the micro-exhaust valve seat. A micro-exhaust valve disc is arranged on the plastic float at a position corresponding to the micro-exhaust valve seat. When the plastic float moves up and down relative to the plastic valve disc, the micro-exhaust valve disc controls the opening and closing of the micro-exhaust hole accordingly. After the micro-exhaust valve disc closes the micro-exhaust hole, there is a gap between the plastic float and the plastic valve disc, and the auxiliary holes are arranged towards this gap. The auxiliary holes allow the micro-exhaust valve disc to move downwards under the influence of the plastic float when the air valve performs micro-exhaust, opening the micro-exhaust hole and forming a micro-exhaust channel between the valve cavity, the auxiliary holes, and the micro-exhaust hole for micro-exhaust.

[0015] This utility model also provides an air valve, including a valve body with an internal valve cavity and a float valve core, wherein the float valve core is located in the valve cavity; an air inlet and a main exhaust port communicating with the valve cavity are respectively provided on the lower and upper sides of the valve body; when the float valve core floats up and down relative to the valve body, the plastic valve flap controls the opening and closing of the main exhaust port accordingly.

[0016] Other technical problems that the float valve core and air valve of this utility model can solve, other technical features contained in the technical solution, and the advantages brought by these technical features will be further explained in detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 Top view of the air valve;

[0018] Figure 2 for Figure 1 HH cross-sectional view of the air valve main exhaust port in the open state;

[0019] Figure 3 for Figure 1 HH cross-sectional view of the air valve main exhaust port in closed state;

[0020] Figure 4 Enlarged view of the connection between the plastic valve disc and the plastic float;

[0021] Figure 5 A schematic diagram of the plastic valve disc and plastic float structure;

[0022] Figure 6 This is a front view of the plastic valve disc structure.

[0023] Label Explanation:

[0024] 1. Valve body; 11. Air inlet; 12. Plastic float; 121. Micro exhaust valve disc; 122. Lower connecting part; 123. Side hole; 13. Plastic valve disc; 131. Micro exhaust valve seat; 1311. Micro exhaust hole; 132. Auxiliary hole; 133. Upper connecting part; 14. Upper guide rod; 15. Upper fixing bracket; 16. Lower guide rod; 17. Lower fixing bracket; 18. Protective bracket; 19. Limiting strip; 2. Valve cover; 3. Filter canister; 4. Protective cover. Detailed Implementation

[0025] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0026] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0027] Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this utility model. These terms are primarily for better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation. Moreover, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0029] This application provides an air valve, which is installed in a water pipeline system and is mainly used to vent a large amount of air when the pipeline is filled with water, to draw in a large amount of air when the pipeline is emptied or burst, and to vent a small amount of gas released from the pipeline during pipeline operation.

[0030] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the air valve includes a valve body 1, within which a valve cavity is formed. A main exhaust port and an air inlet 11, communicating with the valve cavity, are respectively located on the upper and lower sides of the valve body 1. Preferably, a valve cover 2 is sealed to the upper side of the valve body 1, and the main exhaust port is located on the valve cover 2. However, in other cases, the valve body 1 and the valve cover 2 can be formed as a single unit.

[0031] This application also provides a float valve core for use in an air valve, specifically the float valve core being located in the valve cavity of the air valve. The float valve core includes a plastic float 12 and a plastic valve disc 13, which are connected by a connecting assembly.

[0032] Both the plastic float 12 and the plastic valve disc 13 are plastic parts made of plastic materials, such as PP. Compared to stainless steel floats and valve discs, the plastic float 12 and plastic valve disc 13 are lower in cost, have a more stable structure, and are less likely to cause air valve failure.

[0033] The float valve core is located in the valve chamber of the air valve and can float up and down. When the float valve core floats up and down relative to the valve body 1, the plastic valve disc 13 controls the opening and closing of the main exhaust port accordingly. A micro exhaust valve seat 131 is provided on the plastic valve disc 13, and a micro exhaust hole 1311 is provided on the micro exhaust valve seat 131 to connect with the outside and the valve chamber. A micro exhaust valve disc 121 is provided on the plastic float 12 at a position corresponding to the micro exhaust valve seat 131. When the plastic float 12 floats up and down relative to the plastic valve disc 13, the micro exhaust valve disc 121 controls the opening and closing of the micro exhaust hole 1311 accordingly.

[0034] Specifically, during the filling of the water pipeline, a large amount of air in the pipeline is vented through the air valve, allowing for smooth water filling. Water in the pipeline enters the valve chamber through the air inlet 11, and the float valve core floats up and down under the buoyancy of the water. During the filling process, a large amount of air in the pipeline is vented through the air valve inlet 11, the valve chamber, and the main exhaust port. After filling, water enters the valve chamber, causing the float valve core to move upwards and closer to the main exhaust port. Water continues to enter during this process until the plastic valve flap 13 in the float valve core moves to the main exhaust port and seals it, thus closing the main exhaust port.

[0035] During normal water transport, the plastic valve disc 13 seals the main vent, closing the main vent. Simultaneously, water in the valve chamber acts on the plastic float 12, which in turn drives the micro-vent valve disc 121 to seal the micro-vent hole 1311 of the micro-vent valve seat 131. As gas in the water is released and accumulates in the valve chamber, the water level drops, causing the plastic float 12 in the float valve core to descend. The float 12 then drives the micro-vent valve disc 121 to disengage from the micro-vent hole 1311, opening the micro-vent hole 1311 and releasing the released gas. The air valve then releases a small amount of gas through the micro-vent hole 1311. As this gas is released, the water level in the valve chamber rises, the plastic float 12 moves upward, and the micro-vent valve disc 121 closes the micro-vent hole 1311. This process is repeated to release the released gas through the micro-vent hole 1311. It should be noted that, since the plastic float 12 and the plastic valve disc 13 are connected by a connecting assembly, the up-and-down movement of the plastic float 12 controls the micro-venting valve disc 121 to close or open the micro-venting port 1311. The opening and closing of the main venting port during micro-venting depends on the water level in the valve chamber. For example, in some cases, a large amount of gas is released, and the water level in the valve chamber drops significantly. The downward stroke of the plastic float 12 is longer, causing the plastic float 12 to drive the micro-venting valve disc 121 to open the micro-venting port 1311, and then continue to drive the plastic valve disc 13 to move downward, thus opening the main venting port.

[0036] Finally, when the pipeline is vented or bursts, negative pressure is generated inside the pipeline, water is discharged from the valve chamber of the air valve, the float valve core falls, and the plastic valve disc 13 is separated from the main exhaust port. The main exhaust port opens, and the air valve draws in air to balance the air pressure inside and outside the pipeline.

[0037] Combined Figure 4 As shown, the connecting assembly includes an upper connecting portion 133 located on the plastic valve disc 13 and a lower connecting portion 122 located on the plastic float 12, the upper connecting portion 133 and the lower connecting portion 122 being connected to each other. The float valve core also includes a limiting strip 19, which is embedded between the upper connecting portion 133 and the lower connecting portion 122, and there is a gap between the limiting strip 19 and the upper connecting portion 133 or the lower connecting portion 122, so that there is radial and axial displacement space between the plastic float 12 and the plastic valve disc 13.

[0038] In a preferred embodiment, the upper connecting portion 133 is a boss protruding from the side of the plastic valve disc 13, with one end of the boss extending in a direction away from or near the center of the plastic valve disc 13 to form a limiting platform; the lower connecting portion 122 is a groove recessed on one side of the plastic float 12, with the boss and groove engaging. A limiting strip 19 is installed in the groove, specifically between the limiting platform of the boss and the opening of the groove, so that the limiting strip 19 limits the movement between the plastic float 12 and the plastic valve disc 13. Specifically, in conjunction with... Figure 4 In the view, there is a certain gap between the lower side of the limiting strip 19 and the limiting platform, allowing the plastic float 12 to move axially relative to the plastic valve disc 13. At the same time, there is a certain gap between the side of the limiting strip 19 near the center of the plastic float 12 and the boss, allowing the plastic float 12 to move radially relative to the plastic valve disc 13.

[0039] To improve the air valve's venting sensitivity during micro-venting and ensure timely gas discharge, the limiting strip 19 restricts the radial and axial displacement space between the plastic float 12 and the plastic valve disc 13. For example, the radial displacement space does not exceed 2mm, and the axial displacement space does not exceed 7mm. In this design, the interconnected and relatively movable plastic float 12 and plastic valve disc 13 enable air valve intake and exhaust, as well as micro-venting. Simultaneously, the limiting strip 19 restricts the relative movement between the plastic float 12 and plastic valve disc 13, improving the air valve's venting sensitivity and reliability during micro-venting. Furthermore, the limiting strip 19 ensures a more secure and stable connection between the plastic float 12 and plastic valve disc 13, preventing the boss of the upper connecting part 133 from dislodging from the groove of the lower connecting part 122, thus improving the stability of the air valve's micro-venting process.

[0040] It should be noted that in other embodiments, the limiting strip 19 may also be provided in the upper connecting portion 133. For example, the upper connecting portion 133 may be a recessed groove or a protruding boss, and the limiting strip 19 may be installed in the groove of the upper connecting portion 133.

[0041] In this design, as a further improvement, the limiting strip 19 is elastic, facilitating its installation and allowing it to deform into a shape that matches the groove for installation within it. Furthermore, the elasticity of the limiting strip 19 also provides a cushioning effect. During the micro-ventilation process, as the plastic float 12 descends, the limiting platform of the boss abuts against the limiting strip 19, thus providing a cushioning effect. Additionally, the limiting strip 19 has a rectangular cross-section, simplifying manufacturing and reducing processing costs.

[0042] A side hole 123 communicating with the groove is opened on one side of the plastic float 12. The limiting strip 19 is installed into the groove through the side hole 123.

[0043] Combination Figure 6 As shown, further in this embodiment, the upper connecting portion 133 is arranged around the axial center of the plastic valve disc 13. A plurality of auxiliary holes 132 are spaced apart on the upper connecting portion 133 around the axial center of the plastic valve disc 13. After the micro-exhaust valve disc 121 closes the micro-exhaust port 1311, there is a certain gap between the plastic float 12 and the plastic valve disc 13, and the auxiliary holes 132 are arranged towards this gap. When the air valve performs a small amount of exhaust, the micro-exhaust valve disc 121 moves downward driven by the plastic float 12, causing the micro-exhaust port 1311 to open, forming a micro-exhaust channel between the valve cavity, the auxiliary holes 132, and the micro-exhaust port 1311, thus performing micro-exhaust.

[0044] Combined Figure 2 As shown, a lower fixing bracket 17 is integrally provided on the valve body 1 of the air valve. A lower guide rod 16 is mounted on the lower fixing bracket 17 at the axial center of the valve body 1, and a through hole is formed in the axial direction of the lower guide rod 16. One end of the lower guide rod 16 is fixedly connected to the lower fixing bracket 17, and the other end extends into the plastic float 12 and is slidably connected to the plastic float 12. When the plastic float 12 moves up and down, it moves up and down under the guidance of the lower guide rod 16.

[0045] An upper fixing bracket 15 is integrally mounted on the valve cover 2. An upper guide rod 14 is mounted on the upper fixing bracket 15 at the axial center of the valve body 1. The upper guide rod 14 has a through hole in its axial direction, which communicates with the micro-vent hole 1311. One end of the upper guide rod 14 is fixedly connected to the plastic valve disc 13, and the other end is slidably connected to the upper fixing bracket 15. When the plastic valve disc 13 moves up and down, it moves up and down under the guidance of the upper guide rod 14.

[0046] To prevent the plastic float 12 from frequently colliding with the lower fixed frame 17 and damaging the structure of the plastic float 12 when the float valve core floats up and down, a protective bracket 18 is also provided on the lower side of the plastic float 12. The protective bracket 18 is fixed and sleeved on the lower guide rod 16.

[0047] A protective cover 4 is installed above the main exhaust port of the air valve. The protective cover 4 is fixedly connected to the valve cover 2 by screws. A filter barrel 3 is also installed between the protective cover 4 and the valve cover 2. The protective cover 4 is installed to prevent dust from entering the valve and to prevent rainwater from entering the valve when the air valve is installed outdoors. The filter barrel 3 has several through holes. The filter barrel 3 is used to prevent small animals and flying insects from entering the valve. On the other hand, it is used to prevent dead branches, leaves and other debris from being sucked in when the water supply to the pipeline is stopped and the air valve is drawing in air.

[0048] The terms “installation,” “setup,” “equipped with,” and “connection” used herein should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0049] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A floating valve core for an air valve, characterized in that: it comprises a plastic floating bucket (12) and a plastic valve disc (13), the plastic floating bucket (12) and the plastic valve disc (13) are connected through a connecting assembly, the connecting assembly comprises an upper connecting part (133) on the plastic valve disc (13) and a lower connecting part (122) on the plastic floating bucket (12), the upper connecting part (133) and the lower connecting part (122) are connected with each other in cooperation; it further comprises a limiting strip (19), the limiting strip (19) is embedded between the upper connecting part (133) and the lower connecting part (122), and there is a gap between the limiting strip (19) and the upper connecting part (133) or the lower connecting part (122), so that there is a radial and axial displacement space between the plastic floating bucket (12) and the plastic valve disc (13). The limiting strip (19) is elastic. The limiting strip (19) has a rectangular cross section. The upper connecting part (133) is a boss provided on the side of the convex plastic valve disc (13), one end of the boss extends towards the direction away from or close to the center of the plastic valve disc (13) to form a limiting platform; the lower connecting part (122) is a groove recessed on one side of the plastic floating bucket (12), and the boss and the groove are connected in cooperation.

2. The float valve trim of claim 1, wherein: One side of the plastic floating bucket (12) is provided with a side hole (123) in communication with the groove.

3. The float valve trim of claim 1, wherein: The upper connecting part (133) is arranged around the axial center of the plastic valve disc (13).

4. The float valve trim according to claims 1, 2, or 3, characterized in that: A plurality of auxiliary holes (132) are arranged on the upper connecting part (133) around the axial center of the plastic valve disc (13).

5. The float valve trim of claim 4, wherein: A micro exhaust valve seat (131) is arranged on the plastic valve disc (13), and a micro exhaust hole (1311) is formed in the micro exhaust valve seat (131); a micro exhaust valve disc (121) is arranged on the plastic floating bucket (12) at a position corresponding to the micro exhaust valve seat (131), and when the plastic floating bucket (12) moves up and down relative to the plastic valve disc (13), the micro exhaust valve disc (121) controls the opening and closing of the micro exhaust hole (1311) correspondingly.

6. The float valve trim of claim 4, wherein: After the micro exhaust valve disc (121) closes the micro exhaust hole (1311), there is a gap between the plastic floating bucket (12) and the plastic valve disc (13), and the auxiliary holes (132) are arranged towards the gap.

7. The float valve trim of claim 5, wherein: It comprises a valve body (1) with a valve cavity inside and the floating valve core according to any one of claims 1-9, and the floating valve core is located in the valve cavity.

8. The float valve trim of claim 7, wherein: The lower side and the upper side of the valve body (1) are respectively provided with an air inlet (11) and a main exhaust port in communication with the valve cavity, and when the floating valve core floats up and down relative to the valve body (1), the plastic valve disc (13) controls the opening and closing of the main exhaust port correspondingly.

9. The float valve trim of claim 8, wherein: ​ 10. An air valve characterized by: ​ ​

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