Float guard assembly and air valve

Abstract

The application discloses a float protector assembly and an air valve. The float protector assembly comprises a protector, the protector is provided with an inlet and outlet water passage, so that water enters and exits the protector from outside the protector, the protector is provided with a reference surface, and the reference surface is configured as a horizontal surface; a float is arranged in the protector, an outer wall of the float is adapted to contact an inner wall of the protector to limit movement of the float; and a guide is arranged on the intersection line of the float and the reference surface, and the guide is adapted to contact the inner wall of the protector to guide the movement of the float. The guide is added on the basis that the float is configured to be adapted to contact the inner wall of the protector, so that the probability of water leakage is reduced, and the overall reliability is improved. Meanwhile, the guide is arranged on the intersection line of the float and the reference surface, compared with the scheme in the related art that the overall height of the air valve is relatively high, the air valve in the embodiment of the application can be arranged to be relatively low, so that the occupied space is reduced, and the demand that the air valve has a small installation space and does not leak water is met.

Description

Technical Field

[0001] This invention relates to the field of pipeline valves, and in particular to a float sleeve assembly and an air valve. Background Technology

[0002] In water pipeline systems, when unexpected situations occur, such as a sudden stop of the delivery pump or a sudden closure of a valve in the pipeline, a transient state of rapid changes in fluid flow and pressure will occur. This phenomenon is called water hammer. When water hammer occurs, the rapid change in fluid flow in the pipe will cause the propagation of pressure waves, resulting in a rapid rise / fall in pressure within the pipe. In some cases, the pipeline may even collapse or be damaged due to the pressure waves.

[0003] To reduce or avoid losses caused by water hammer, air valves are typically used in water supply pipeline systems. Air valves draw in air when the pressure inside the pipeline is lower than atmospheric pressure and discharge air when the pressure is higher than atmospheric pressure, thereby preventing liquid column separation or other adverse conditions caused by negative pressure.

[0004] Some air valves have a micro-venting function. The air valve includes a float and a micro-venting sealing gasket on the float. The air valve also has a micro-venting channel. When the water level in the air valve is high, the float is in a higher position, and the micro-venting sealing gasket blocks the micro-venting channel. When the water level in the air valve drops, the float falls, and the air in the air valve is discharged through the micro-venting channel.

[0005] As can be seen from the above description, the micro-venting sealing gasket needs to correspond to the micro-venting channel. In other words, the guide structure of the float needs to be sufficiently precise. Only in this way can it be ensured that when the float rises, the micro-venting sealing gasket blocks the micro-venting channel. Otherwise, the water in the air valve may be discharged outside the air valve through the micro-venting channel.

[0006] However, in the relevant technical solutions, in order to ensure the precision of the guiding structure, the float sleeve assembly occupies a large space, resulting in a large overall air valve. Under certain circumstances, the installation space for the air valve is limited, which leads to a conflict between the two requirements of small installation space and no water leakage. Summary of the Invention

[0007] The present invention provides a float protection sleeve assembly, the purpose of which is to overcome the above-mentioned problems existing in the prior art.

[0008] To achieve this objective, the present invention adopts the following technical solution: An air valve float housing assembly includes: a housing having inlet and outlet water channels for water to enter and exit the housing from the outside; the housing having a reference surface configured as a horizontal plane; a float disposed within the housing, the outer wall of the float being adapted to contact the inner wall of the housing to restrict the movement of the float; and a guide member disposed on the intersection line of the float and the reference surface, the guide member being adapted to contact the inner wall of the housing to guide the movement of the float.

[0009] According to the float casing assembly of the present invention, a guide member is added on the basis that the float is configured to contact the inner wall of the casing. The guide member is also adapted to the inner wall of the basic casing, making the movement trajectory of the float clearer and improving the predictability of the float. This reduces the probability that the micro-venting channel cannot be closed, reduces the probability of water leakage, and improves the overall reliability. At the same time, the guide member is set on the intersection line of the float and the reference plane, and the reference plane is constructed as a horizontal plane. That is to say, the guide member occupies horizontal space. Compared with the air valve with a relatively high overall height in related technologies, the air valve of the present invention can be set to be shorter, thereby reducing the space occupied and meeting the requirements of small installation space and no water leakage of the air valve.

[0010] Optionally, the guide extends along the circumferential direction of the float.

[0011] Optionally, the water inlet and outlet channels include: a first channel located at the bottom of the casing; and a second channel located at the top of the casing, wherein the cross-sectional area of ​​the second channel is larger than that of the first channel.

[0012] Optionally, the guide extends vertically; or, the guide extends toward the inner wall of the casing.

[0013] Optionally, the guide member has a notch that extends through the guide member and the notch extends along the circumferential direction of the float; or, there are multiple notches, some of which are spaced apart along the circumferential direction of the float.

[0014] Optionally, there are multiple guide members, which are spaced apart along the circumferential direction of the float.

[0015] Optionally, the guide extends in a vertical direction; or, the guide is at least partially constructed as an outwardly convex arc surface.

[0016] Optionally, the guide member is integrally formed on the float; or, the guide member is welded to the float; and / or, the float includes a mating portion adapted to contact the inner wall of the protective sleeve to restrict the movement of the float, and the guide member is disposed on one side of the mating portion.

[0017] Optionally, the float further includes: a main body portion connected to the mating portion and located below the mating portion; the protective sleeve includes a limiting portion adapted to the main body portion to restrict the movement of the float; and a mounting portion connected to the mating portion and located above the mating portion. On the horizontal cross-section of the float, the projection of the mounting portion is completely within the projection of the mating portion, and the guide member is disposed on the mounting portion.

[0018] The present invention also proposes an air valve, comprising: a valve body and a valve cover, the valve cover being disposed on the valve body and having an air inlet / outlet channel; a valve disc, the valve disc being movably disposed within the valve body to open and close the air inlet / outlet channel, and the valve disc having a micro exhaust channel; and a float sleeve assembly, the float sleeve assembly being disposed within the valve body, the float being disposed below the valve disc, the float being configured to push the valve disc upward to block the air inlet / outlet channel, and the float being adapted to block the micro exhaust channel.

[0019] According to an embodiment of the present invention, the air valve, by setting the above-mentioned float sleeve assembly, adds a guide member on the basis that the float is configured to contact the inner wall of the sleeve. The guide member is also adapted to the inner wall of the basic sleeve, making the movement trajectory of the float clearer and improving the predictability of the float. This reduces the probability that the micro-venting channel cannot be closed, reduces the probability of water leakage, and improves the overall reliability. At the same time, the guide member is set on the intersection line of the float and the reference plane, and the reference plane is constructed as a horizontal plane. That is to say, the guide member occupies horizontal space. Compared with the air valve with a relatively high overall height in related technologies, the air valve of the present invention can be set shorter, thereby reducing the space occupied and meeting the requirements of small installation space and no water leakage of the air valve. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a float sleeve assembly provided in an embodiment of the present invention. Figure 1 ; Figure 2 yes Figure 1 Cross-sectional view of the float casing assembly shown Figure 2 ; Figure 3 yes Figure 1 Top view of the buoy; Figure 4 This is a schematic diagram of another type of float provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of another type of float provided in an embodiment of the present invention; Figure 6 yes Figure 5 Top view of the buoy; Figure 7This is a cross-sectional view of the air valve provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 10. Float casing assembly; 11. Casing; 111. Inlet / outlet water channel; 1111. First channel; 1112. Second channel; 112. Limiting part; 12. Float; 121. Main body; 122. Mounting part; 123. Fitting part; 124. Micro-discharge sealing gasket; 13. Guide component; 131. Notch; 100. Air valve; 20. Valve body; 30. Valve cover; 31. Inlet / outlet air passage; 40. Valve disc; 32. Micro exhaust passage. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0023] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0026] Reference Figure 1 , Figure 2 The float sleeve assembly 10 of this embodiment includes: sleeve 11, float 12 and guide member 13.

[0027] The casing 11 is provided with water inlet and outlet channels 111, so that water can enter and exit the casing 11 from the outside of the casing 11. The casing 11 is provided with a reference surface, which is constructed as a horizontal surface.

[0028] The inlet and outlet water channels 111 are installed on the casing 11, connecting the inside and outside of the casing 11. The inlet and outlet water channels 111 are used for water inlet and outlet. When the water level inside the air valve 100 is high, the water level inside the casing 11 rises. The reference surface does not have a solid body; it is a virtual surface. Specifically, the reference surface is a horizontal surface, which is set horizontally.

[0029] The float 12 is disposed inside the protective tube 11, and the outer wall of the float 12 is adapted to contact the inner wall of the protective tube 11 to restrict the movement of the float 12.

[0030] The float 12 is located inside the protective sleeve 11, with the inner wall of the sleeve 11 in contact with the outer wall of the float 12, allowing the sleeve 11 to move within a certain range. The float 12 floats on the water surface. When the water level rises, the float 12 automatically rises. Eventually, the micro-venting sealing gasket 124 on the float 12 blocks the micro-venting channel. When the water level drops, the micro-venting sealing gasket 124 on the float 12 is separated from the opening of the micro-venting channel by a certain distance, and air is discharged to the outside of the air valve 100 through the micro-venting channel.

[0031] The guide member 13 is located on the intersection line of the float 12 and the reference plane. The guide member 13 is adapted to contact the inner wall of the protective cylinder 11 to guide the movement of the float 12.

[0032] The reference plane is a virtual plane that passes through the float 12. The intersection of the reference plane and the float 12 is located on the side wall of the float 12. The guide member 13 is located on the intersection of the float 12 and the reference plane, that is, the guide member 13 is located on the side wall of the float 12. The guide member 13 is adapted to contact the inner wall of the protective sleeve 11 to guide the rise and fall of the float 12.

[0033] When the water level rises, the float 12 floats up. The outer wall of the float 12 is directly guided by the inner wall of the protective sleeve 11. At the same time, the float 12 is indirectly restricted by the inner wall of the protective sleeve 11 through the guide 13. The float 12 is guided by multiple factors, and the trajectory of the float 12 is more certain. This reduces the probability that the micro-venting channel cannot be blocked, thereby reducing the probability of water leakage.

[0034] Meanwhile, compared with the related technologies, the scheme of setting a longer guide column at the bottom of the float increases the overall height of the air valve, making it impossible to install the air valve in a small space. It should be noted that the site environment of water conservancy projects is relatively complex. In some cases, the reserved installation space for the air valve is small, which is not suitable for the installation of tall air valves. In this embodiment of the invention, the guide member 13 is set on the intersection line of the float 12 and the reference plane. The guide member 13 occupies horizontal space, reduces the overall height, and facilitates installation in a small space.

[0035] According to the float sleeve assembly 10 of the present invention, a guide member 13 is added on the basis that the float 12 is configured to contact the inner wall of the sleeve 11. The guide member 13 is also adapted to the inner wall of the basic sleeve 11. The movement trajectory of the float 12 is clearer, the predictability of the float 12 is improved, thereby reducing the probability that the micro-venting channel cannot be closed, reducing the probability of water leakage, and improving the overall reliability. At the same time, the guide member 13 is set on the intersection line of the float 12 and the reference plane, and the reference plane is constructed as a horizontal plane. That is to say, the guide member 13 occupies horizontal space. Compared with the related art schemes where the overall height of the air valve is relatively high, the air valve 100 of the present invention can be set to be shorter, thereby reducing the space occupied and meeting the requirements of small installation space and no water leakage of the air valve 100.

[0036] Optionally, the guide member 13 extends along the circumferential direction of the float 12. By setting the guide member 13 to extend along the circumferential direction of the float 12, the contact between the guide member 13 and the inner wall of the protective sleeve 11 is increased, thereby further improving the accuracy of the movement of the float 12 and further reducing the probability of leakage.

[0037] Reference Figures 1 to 4 In some specific embodiments, the guide member 13 extends circumferentially around the float 12, thereby reducing the probability of the float 12 deviating. Of course, the guide member 13 can also extend half a circumference, a quarter circumference, etc., which will not be elaborated here.

[0038] In some specific embodiments, there are multiple guide members 13, which are spaced apart along the circumferential direction of the float 12 and extend along the circumferential direction of the float 12.

[0039] Optionally, the water inlet / outlet channel 111 includes: a first channel 1111 and a second channel 1112.

[0040] The first channel 1111 is located at the bottom of the casing 11. The second channel 1112 is located at the top of the casing 11, and the cross-sectional area of ​​the second channel 1112 is larger than that of the first channel 1111.

[0041] The first channel 1111 is located at the bottom of the casing 11, connecting the internal and external spaces of the casing 11. By placing the first channel 1111 at the bottom, even with a small amount of water, the float 12 can float linearly, improving controllability and accuracy. The second channel 1112 is located at the top of the casing 11, and its larger cross-sectional area allows it to better handle sudden increases in flow, such as water hammer. In such cases, a large amount of water flows directly into the casing 11 through the second channel 1112, causing the float 12 to react quickly.

[0042] It should be noted that the second channel 1112 has a cooperating relationship with the guide 13 extending in the circumferential direction of the float 12. The guide 13 extends in the circumferential direction and is wider than the second channel 1112, thereby reducing the probability of the guide 13 getting stuck in the second channel 1112 and preventing the float 12 from failing to descend normally.

[0043] Reference Figure 4 Optionally, the guide 13 also extends in the vertical direction.

[0044] It should be noted that the fact that the guide member 13 extends in the vertical direction does not mean that the guide member 13 is strictly perpendicular to the horizontal plane. The guide member 13 can also be inclined relative to the horizontal plane and extend obliquely upward. The guide member 13 extending obliquely upward also extends in the vertical direction. Similarly, the guide member 13 extending obliquely downward also extends in the vertical direction.

[0045] By setting a guide 13 that extends vertically and has a certain height, the probability of the guide 13 contacting the inner wall of the protective cylinder 11 is increased, thus improving reliability and enabling the air valve 100 to fully adapt to diverse outdoor working conditions.

[0046] Reference Figures 1 to 3 Optionally, the guide 13 extends toward the inner wall of the casing 11.

[0047] Specifically, the guide member 13 extends horizontally toward the inner wall of the casing 11, with one end of the guide member 13 near the inner wall of the casing 11 contacting the inner wall of the casing 11. Of course, the guide member 13 can also be inclined relative to the horizontal plane, and the inclined guide member 13 also extends toward the inner wall of the casing 11, with one end of the guide member 13 near the inner wall of the casing 11 contacting the inner wall of the casing 11.

[0048] By setting the guide 13 to extend toward the inner wall of the protective cylinder 11, the enlarged guide 13 fully contacts the inner wall of the protective cylinder 11, further increasing the contact on the basis that the float 12 contacts the inner wall of the protective cylinder 11, thereby supporting the float 12 at multiple points, guiding the movement of the float 12, and improving the reliability of the movement of the float 12.

[0049] Optionally, the guide member 13 is provided with a notch 131 that passes through the guide member 13, and the notch 131 extends along the circumferential direction of the float 12.

[0050] Among them, the gap 131 passes through the guide member 13, and the gap 131 connects the spaces on both sides of the guide member 13, allowing water to flow freely in the spaces on both sides.

[0051] By providing a through-hole 131 on the guide member 13, the two sides of the space are connected by the through-hole 131. When a large amount of water rushes into the casing 11, the water on the upper side of the guide member 13 flows through the through-hole 131 to the lower part of the guide member 13, increasing the buoyancy of the float 12 and causing the float 12 to rise. This fully reflects changes in water level and improves the sensitivity of the float 12. At the same time, the through-hole 131 extends along the circumferential direction of the float 12, increasing the area and allowing water to flow in multiple directions around the circumference, fully reflecting multiple changes in water level.

[0052] Reference Figure 3 , Figure 4 Optionally, the guide member 13 is provided with a notch 131 that passes through the guide member 13. There are multiple notches 131, and some notches 131 are spaced apart along the circumferential direction of the float 12.

[0053] Among them, the gap 131 passes through the guide member 13, and the gap 131 connects the spaces on both sides of the guide member 13, allowing water to flow freely in the spaces on both sides.

[0054] By providing a through-hole 131 on the guide member 13, connecting the spaces on both sides, when a large amount of water rushes into the casing 11, the water on the upper side of the guide member 13 flows through the through-hole 131 to the lower part of the guide member 13, increasing the buoyancy of the float 12 and causing the float 12 to rise. This effectively reflects changes in water level and improves the sensitivity of the float 12. Simultaneously, multiple through-holes 131 are provided in the circumferential direction, increasing the area and allowing water to flow in multiple directions, thus effectively reflecting multiple changes in water level.

[0055] Specifically, multiple gaps 131 are evenly spaced along the circumferential direction, which improves the balance.

[0056] Reference Figure 5 , Figure 6 Optionally, there are multiple guide members 13, which are spaced apart along the circumferential direction of the float 12.

[0057] Multiple guide members 13 are spaced apart along the circumferential direction of the float 12. The side of the guide member 13 facing the inner wall of the protective cylinder 11 contacts the inner wall of the protective cylinder 11, guiding the float 12 to float upward.

[0058] With multiple guide members 13 arranged in the circumferential direction, the direction of the deflection of the float 12 is always guided by the guide member 13. The guide member 13 contacts the inner wall of the protective cylinder 11 and guides the float 12 to float, thereby reducing the probability that the micro-ventilation sealing gasket 124 cannot block the micro-ventilation channel. In addition, there is a space between adjacent guide members 13 to facilitate the flow of water and make the movement of each component smoother.

[0059] Reference Figure 5 Optionally, the guide 13 extends in the vertical direction.

[0060] It should be noted that the fact that the guide member 13 extends in the vertical direction does not mean that the guide member 13 is strictly perpendicular to the horizontal plane. The guide member 13 can also be inclined relative to the horizontal plane and extend obliquely upward. The guide member 13 extending obliquely upward also extends in the vertical direction. Similarly, the guide member 13 extending obliquely downward also extends in the vertical direction.

[0061] By setting a guide 13 that extends vertically and has a certain height, the probability of the guide 13 contacting the inner wall of the protective cylinder 11 is increased, thus improving reliability and enabling the air valve 100 to fully adapt to diverse outdoor working conditions.

[0062] Optionally, the guide member 13 is at least partially constructed as an outwardly convex arc surface. By constructing the guide member 13 partially as an arc surface, the smooth contact between the rounded arc surface and the inner wall of the protective sleeve 11 is more efficient, facilitating the movement of the float 12 and making the fit between the components smoother.

[0063] For example, the guide member 13 is shaped like a ball. When the float 12 floats, the guide member 13, which is in contact with the inner wall of the protective tube 11, slides relative to the protective tube 11, reducing the probability of jamming.

[0064] Optionally, the guide 13 is integrally formed into the float 12. By integrally forming the guide 13 into the float 12, the number of parts is reduced, the process is shortened, and thus the cost is reduced.

[0065] Optionally, the guide member 13 is welded to the float 12. By welding the guide member 13 to the float 12, the connection stability is increased, and the overall structure is more reliable.

[0066] Optionally, the float 12 includes a mating part 123, which is adapted to contact the inner wall of the protective sleeve 11 to restrict the movement of the float 12, and a guide member 13 is provided on one side of the mating part 123.

[0067] The mating part 123 on the float 12 is used to contact the inner wall of the protective sleeve 11, and the guide 13 is provided on one side of the mating part 123. That is to say, the guide 13 is not provided on the mating part 123.

[0068] The guide member 13 is placed on one side of the mating part 123. The guide member 13 and the mating part 123 cooperate with each other to guide the movement of the float 12 at multiple points, making the movement of the float 12 more stable.

[0069] In some embodiments, the guide member 13 is disposed on the upper side of the mating part 123; in other embodiments, the guide member 13 is disposed on the lower side of the mating part 123; or, the guide member 13 is disposed on both the upper and lower sides of the mating part 123.

[0070] Reference Figure 1 , Figure 2 Optionally, the float 12 may also include a main body 121 and a mounting part 122.

[0071] The main body 121 is connected to the mating part 123 and is located below the mating part 123. The protective sleeve 11 includes a limiting part 112, which is adapted to the main body 121 to limit the movement of the float 12.

[0072] The mounting part 122 is connected to the mating part 123 and is located above the mating part 123. On the horizontal cross section of the float 12, the projection of the mounting part 122 is completely within the projection of the mating part 123, and the guide member 13 is provided on the mounting part 122.

[0073] In this design, the limiting part 112 on the protective sleeve 11 cooperates with the main body 121. The main body 121 is located below the cooperating part 123. The limiting part 112 supports the main body 121 and stabilizes the float 12. The mounting part 122 is located above the cooperating part 123. The guide member 13 is provided on the mounting part 122. That is to say, the guide member 13 is located above the float 12.

[0074] In the horizontal cross section of the float 12, the projection of the mounting part 122 is completely within the projection of the mating part 123. For example, the float 12 is approximately a rotating body, the maximum radius of rotation of the mounting part 122 is less than or equal to the maximum radius of rotation of the mating part 123, and the size of the mounting part 122 is smaller than the size of the mating part 123.

[0075] With the cooperation of the main body 121 and the guide member 13, the main body 121 is located at the lower part of the float 12, and the guide member 13 is located at the upper part of the float 12. The main body 121 located at the lower part cooperates with the limiting part 112, making the movement trajectory of the float 12 more certain, improving reliability, and reducing the probability of the failure to seal the micro-ventilation channel. At the same time, the projection of the mounting part 122 is completely within the projection of the mating part 123, the size of the mounting part 122 is smaller than the size of the mating part 123, and the guide member 13 extends out to contact the inner wall of the casing 11, making the overall structure more compact.

[0076] Specifically, the main body 121 is spherical, and the limiting part 112 is set as a corresponding spherical groove. When the float 12 falls back, the main body 121 automatically fits into the limiting part 112, and the float 12 always returns to the same position each time it falls, which is convenient for control.

[0077] Reference Figure 7 The present invention also proposes an air valve 100, comprising: a valve body 20, a valve cover 30, a valve disc 40, and a float sleeve assembly 10.

[0078] A valve cover 30 is disposed on the valve body 20, and the valve cover 30 has an inlet / outlet air passage 31. A valve disc 40 is movably disposed within the valve body 20 to open and close the inlet / outlet air passage 31, and the valve disc 40 has a micro exhaust passage 32. A float sleeve assembly 10 is disposed within the valve body 20, and a float 12 is disposed below the valve disc 40. The float 12 is configured to push the valve disc 40 upward to block the inlet / outlet air passage 31, and the float 12 is adapted to block the micro exhaust passage 32.

[0079] According to the embodiment of the present invention, the air valve 100, by setting the float sleeve assembly 10 described above, adds a guide member 13 to the float 12 which is configured to contact the inner wall of the sleeve 11. The guide member 13 is also adapted to the inner wall of the basic sleeve 11, making the movement trajectory of the float 12 clearer and improving the predictability of the float 12. This reduces the probability that the micro-venting channel cannot be closed, reduces the probability of water leakage, and improves the overall reliability. At the same time, the guide member 13 is set on the intersection line of the float 12 and the reference plane, and the reference plane is constructed as a horizontal plane. That is to say, the guide member 13 occupies horizontal space. Compared with the air valve with a relatively high overall height in related technologies, the air valve 100 of the present invention can be set shorter, thereby reducing the space occupied and meeting the requirements of small installation space and no water leakage of the air valve 100.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A float sleeve assembly (10) for an air valve, characterized in that, include: The casing (11) is provided with an inlet and outlet water channel (111) so that water enters and exits the casing (11) from the outside of the casing (11). The casing (11) is provided with a reference surface, which is constructed as a horizontal surface. A float (12) is disposed inside the protective cylinder (11), and the outer wall of the float (12) is adapted to contact the inner wall of the protective cylinder (11) to restrict the movement of the float (12); A guide (13) is provided on the intersection line of the float (12) and the reference plane. The guide (13) is adapted to contact the inner wall of the protective cylinder (11) to guide the movement of the float (12).

2. The float sleeve assembly (10) according to claim 1, characterized in that, The guide (13) extends along the circumferential direction of the float (12).

3. The float sleeve assembly (10) according to claim 2, characterized in that, The water inlet and outlet channels (111) include: The first channel (1111) is located at the bottom of the protective sleeve (11); The second channel (1112) is located on the upper part of the protective sleeve (11), and the cross-sectional area of ​​the second channel (1112) is larger than the cross-sectional area of ​​the first channel (1111).

4. The float sleeve assembly (10) according to claim 2, characterized in that, The guide (13) also extends in a vertical direction; or, the guide (13) extends toward the inner wall of the protective sleeve (11).

5. The float sleeve assembly (10) according to claim 4, characterized in that, The guide member (13) is provided with a notch (131) that passes through the guide member (13), and the notch (131) extends along the circumferential direction of the float (12); or, there are multiple notches (131), and some of the notches (131) are spaced apart along the circumferential direction of the float (12).

6. The float sleeve assembly (10) according to claim 1, characterized in that, There are multiple guide members (13), and the multiple guide members (13) are spaced apart along the circumferential direction of the float (12).

7. The float sleeve assembly (10) according to claim 6, characterized in that, The guide (13) extends in a vertical direction; or, the guide (13) is at least partially constructed as an outwardly convex arc surface.

8. The float sleeve assembly (10) according to any one of claims 1 to 7, characterized in that, The guide component (13) is integrally formed on the float (12); Alternatively, the guide (13) is welded to the float (12); And / or, the float (12) includes a mating part (123) adapted to contact the inner wall of the protective sleeve (11) to restrict the movement of the float (12), and the guide (13) is provided on one side of the mating part (123).

9. The float sleeve assembly (10) according to claim 8, characterized in that, The float (12) also includes: The main body (121) is connected to the mating part (123) and is located below the mating part (123). The protective sleeve (11) includes a limiting part (112) which is adapted to the main body (121) to limit the movement of the float (12). Mounting part (122) is connected to the mating part (123) and is located above the mating part (123). On the horizontal cross section of the float (12), the projection of the mounting part (122) is completely within the projection of the mating part (123), and the guide (13) is provided on the mounting part (122).

10. An air valve (100), characterized in that, include: Valve body (20) and valve cover (30), the valve cover (30) is disposed on the valve body (20), and the valve cover (30) is provided with an air inlet and outlet passage (31); A valve disc (40) is movably disposed within the valve body (20) to open and close the air inlet and outlet passage (31), and a micro exhaust passage (32) is provided on the valve disc (40). The float sleeve assembly (10) according to any one of claims 1 to 9, wherein the float sleeve assembly (10) is disposed inside the valve body (20), the float (12) is disposed below the valve disc (40), the float (12) is configured to push the valve disc (40) upward to block the air inlet / outlet passage (31), and the float (12) is adapted to block the micro exhaust passage (32).

Images