An air valve valve train

Abstract

The utility model discloses an air valve valve group, including first air valve and second air valve, through three -way valve connection between first air valve and second air valve, three -way valve includes first port, second port and third port, first port and second port of three -way valve are connected with first air valve and second air valve respectively, make the inside passage of three -way valve with the valve cavity of first air valve and second air valve intercommunication, set up filter piece in three -way valve, and one end of filter piece is towards third port of three -way valve, in the scheme, first air valve and second air valve are connected through three -way valve, set up filter piece in three -way valve. Some pipeline's water contains a large amount of silt or other sundries, and filter piece can effectively filter them, avoid these silt or sundries to cause second air valve failure and enter second air valve.

Description

Technical Field

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

[0002] Multifunctional air valves are widely used in long-distance water transmission pipelines and urban water supply network systems. They have the functions of venting large amounts of air during initial water flow, venting air under pressure during pipeline operation, and absorbing large amounts of air when negative pressure occurs in the pipeline. They play an important role in protecting against water hammer, bridging water hammer, and negative pressure water hammer in pipelines. They can absorb a large amount of air, especially when negative pressure occurs in the pipeline.

[0003] Currently, some water supply projects use source water containing a large amount of mud and sand. After filling with water, this often clogs the auxiliary valve chamber of the air valve, causing the moving parts inside the auxiliary valve to move sluggishly or even jam, leading to air valve failure. To avoid this, filters are usually installed to filter the source water. However, after long-term use, a large amount of debris accumulates on the filters, making the replacement or cleaning process complicated. Utility Model Content

[0004] This utility model provides an air valve assembly that can effectively filter impurities entering the auxiliary valve, reducing the risk of air valve failure, and makes the replacement or cleaning of the filter element more convenient.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] An air valve assembly includes a first air valve and a second air valve, which are connected by a three-way valve; the three-way valve includes a first port, a second port and a third port.

[0007] The first port and the second port of the three-way valve are respectively connected to the first air valve and the second air valve, so that the internal passage of the three-way valve is connected to the valve chambers of the first air valve and the second air valve.

[0008] A filter element is installed inside the three-way valve; and one end of the filter element faces the third port of the three-way valve.

[0009] As a further improvement, the three-way valve includes a horizontal section and an extension section that is inclined relative to the horizontal section, with the filter element located in the horizontal section of the three-way valve.

[0010] As a further improvement, the horizontal section of the three-way valve includes a first connecting pipe and a third connecting pipe connected together, and the extension section of the three-way valve is a second connecting pipe; the first port is located at one end of the first connecting pipe, the second port is located at one end of the second connecting pipe, and the third port is located at one end of the third connecting pipe.

[0011] As a further improvement, the first port of the first connecting pipe is connected to the first air valve, the second port of the second connecting pipe is connected to the second air valve, and the third port of the third connecting pipe is connected to a detachable end cap.

[0012] As a further improvement, the filter element is a cylindrical filter screen; one end of the filter screen is located in the first connecting pipe and faces the first air valve, and the other end is located in the third connecting pipe and faces the end cap; and the side of the filter screen facing the second connecting pipe completely covers the opening of the second connecting pipe.

[0013] As a further improvement, the first air valve is an intake valve, and the second air valve is a composite exhaust valve; the first air valve includes a valve body, a valve cavity is opened in the valve body, and a main intake port, a water inlet and a connection port are also opened on the valve body, all of which are connected to the valve cavity, and the connection port is connected to the three-way valve; a valve disc assembly for opening or closing the main intake port is provided in the valve cavity.

[0014] As a further improvement, the valve disc assembly includes a valve disc that can move up and down, the valve disc being connected to one end of the valve shaft.

[0015] As a further improvement, a valve seat is installed at the main air intake, and a valve seat sealing ring is provided on the inner side of the valve seat.

[0016] As a further improvement, the valve shaft is vertically positioned at the axial center of the main intake port.

[0017] As a further improvement, an elastic element is installed at the upper end of the valve shaft to constrain the valve disc.

[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0019] (1) An air valve assembly of this utility model, wherein a first air valve and a second air valve are connected by a three-way valve, and a filter element is installed inside the three-way valve. Some pipelines contain a large amount of mud, sand or other debris in the water, and the filter element can effectively filter them to prevent these mud, sand or debris from entering the second air valve and causing the second air valve to fail.

[0020] (2) An air valve assembly of the present invention includes a three-way valve comprising a first port, a second port and a third port; the first port and the second port are respectively connected to the first air valve and the second air valve, one end of the filter element faces the third port, and an end cap is connected to the opening of the third port. By opening the end cap and taking out the filter element, the filtered debris can be cleaned, which is convenient and quick.

[0021] (3) An air valve assembly of the present invention has a filter element that is a cylindrical filter screen structure. The filtered debris can be retained inside the cylinder of the filter element, and the filter element itself can collect the debris in a concentrated manner, which is convenient for subsequent cleaning.

[0022] Other technical problems that the air valve assembly 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

[0023] Figure 1 This is a cross-sectional view of the three-way valve in the air valve assembly.

[0024] Figure 2 This is a cross-sectional view of the first air valve in the air valve assembly.

[0025] Label Explanation:

[0026] 1. First air valve; 11. Valve body; 12. Valve chamber; 13. Valve shaft; 14. Valve disc; 15. Valve seat; 16. Valve seat sealing ring; 2. Second air valve; 3. Three-way valve; 31. First connecting pipe; 32. Second connecting pipe; 33. Third connecting pipe; 4. Filter element; 5. End cap. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of 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. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain 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.

[0031] This embodiment provides an air valve assembly, including a first air valve 1 and a second air valve 2. The first air valve 1 is a vacuum first air valve, serving as the main valve. Taking an intake valve as an example, it performs large-volume intake when a vacuum negative pressure occurs in the pipeline. The second air valve 2 is an auxiliary valve, taking a composite exhaust valve as an example, and is connected to the first air valve 1 for intake, exhaust, and micro-exhaust.

[0032] like Figure 2 As shown, the first air valve 1 includes a valve body 11, a valve cavity 12 is formed inside the valve body 11, and a main air intake, a water inlet, and a connection port, all of which are connected to the valve cavity 12, are also formed on the valve body 11. Typically, the air valve in this embodiment is as follows... Figure 2 The device is installed according to the orientation shown in the diagram, with the main air intake on the upper side, the water inlet on the lower side, and the connection port on the side for connection to the second air valve 2. A valve disc assembly for opening or closing the main air intake is installed within the valve chamber 12.

[0033] Specifically, the valve disc assembly includes a valve disc 14 that can move up and down, and the valve disc 14 is connected to one end of the valve shaft 13. A valve seat 15 is installed at the main intake port, and a valve seat sealing ring 16 is provided on the inner side of the valve seat 15. The valve shaft 13 is vertically positioned at the axial center of the main intake port. A fixing frame is connected to the main intake port, and the valve shaft 13 is mounted on the fixing frame and can move up and down along the fixing frame. The fixing frame also guides the valve shaft 13.

[0034] An elastic element is also installed at the upper end of the valve shaft 13 to constrain the valve disc 14. Specifically, the valve disc 14 is connected to one end of the valve shaft 13 and located on the lower side of the fixing frame, and the elastic element (e.g., a spring) is installed at the other end of the valve shaft 13 and located on the upper side of the fixing frame. One end of the elastic element abuts against the fixing frame, and the other end abuts against the retaining ring installed on the valve shaft 13.

[0035] In this embodiment, during the pipeline filling process, gas is discharged through the second air valve 2. After filling, the water enters the valve body 11 through the inlet and then into the second air valve 2. During normal operation, under the action of the elastic element, the valve disc 14 at the main air intake contacts the valve seat 15 and the valve seat sealing ring 16, closing the main air intake. During this period, gas still precipitates in the water, and at this time, a small amount of gas is discharged through the second air valve 2.

[0036] When negative pressure occurs in the pipeline, valve disc 14 moves downward under the action of negative pressure, the main air intake port opens to draw in air, and at the same time, it draws in air together with the second air valve 2 to avoid negative pressure water hammer caused by negative pressure in the pipeline.

[0037] like Figure 1 As shown, the first air valve 1 and the second air valve 2 are connected by a three-way valve 3. Specifically, the three-way valve 3 includes a first port, a second port, and a third port. The first port and the second port of the three-way valve 3 are respectively connected to the first air valve 1 and the second air valve 2, so that the internal channel of the three-way valve 3 is connected to the valve chambers of the first air valve 1 and the second air valve 2. A filter element 4 is provided inside the three-way valve 3, and one end of the filter element 4 faces the third port of the three-way valve 3.

[0038] In this design, water enters the valve body 11 of the first air valve 1 and simultaneously enters the second air valve 2 through the three-way valve 3 between the first and second air valves 1 and 2. Some pipelines contain water with a large amount of silt or other debris. The filter element 4 installed inside the three-way valve 3 effectively filters this debris, preventing it from entering the second air valve 2 and causing it to malfunction. Furthermore, one end of the filter element 4 faces the third port of the three-way valve 3. Since the third port is not connected to either the first or second air valve 2, replacing or cleaning the filter element 4 does not require disassembling either the first or second air valve 2; simply opening the third port suffices, making the process very convenient.

[0039] As a further improvement, the three-way valve 3 includes a horizontal section and an extension section that is inclined relative to the horizontal section, and the filter element 4 is located in the horizontal section of the three-way valve 3.

[0040] Regarding the relative position between the horizontal segment and the extension segment, the included angle between them is α, where 0° < α < 180°. For example, the included angle α can be 1°, 45°, 90°, 120°, or 179°. In this embodiment, α is described as 90°.

[0041] Specifically, the horizontal section of the three-way valve 3 includes a first connecting pipe 31 and a third connecting pipe 33 connected together, and the extension section of the three-way valve 3 is a second connecting pipe 32. The first port is located at one end of the first connecting pipe 31, the second port is located at one end of the second connecting pipe 32, and the third port is located at one end of the third connecting pipe 33. The first port of the first connecting pipe 31 is connected to the first air valve 1, the second port of the second connecting pipe 32 is connected to the second air valve 2, and the third port of the third connecting pipe 33 is connected to a detachable end cap 5.

[0042] In one method of connecting the end cap 5, the end cap 5 is connected to the opening of the third connecting pipe 33 by screws or bolts, thereby facilitating the disassembly of the end cap 5. However, in other embodiments, other detachable connection methods can also be used between the two.

[0043] In a preferred embodiment, the filter element 4 is a cylindrical filter screen. One end of the filter element 4 is open in the first connecting pipe 31 and faces the first air valve 1, while the other end is open in the third connecting pipe 33 and faces the end cap 5. The side of the filter element 4 facing the second connecting pipe 32 completely covers the opening of the second connecting pipe 32. Water in the first air valve 1 enters the three-way valve 3 through the first connecting pipe 31, is filtered by the filter element 4, and then enters the second air valve 2 through the second connecting pipe 32, preventing impurities from entering the second air valve 2. Furthermore, the cylindrical filter element 4 allows filtered impurities to remain inside the cylinder. For cleaning, first close the inspection valve on the pipeline, then open the end cap 5, remove the filter element 4 to clean the filtered impurities, then reinsert the filter element 4 into the three-way valve 3 through the third connecting pipe 33, and finally install the end cap 5. The cleaning process is simple and convenient, and allows for online cleaning of the filter element in the air valve.

[0044] It should be noted that the filter element 4 can also be other cylindrical structures, such as a square tube.

[0045] In addition, the density of the filter screen of filter element 4 can be selected by those skilled in the art according to the size of impurities in the water in the application.

[0046] It should also be noted that in this embodiment, the filter element 4 is located in the horizontal section formed by the first connecting pipe 31 and the third connecting pipe 33. The first port is connected to the first air valve 1, the second port is connected to the second air valve 2, and the third port is connected to a detachable end cap 5. By opening the end cap 5, the filter element 4 can be removed. Compared to the scheme where the filter element is located in the extension section, when the filter element is located in the extension section, it is necessary to disassemble the second air valve before removing the filter element, which is a complicated process and difficult to replace or clean. However, in this embodiment of the utility model, it is not necessary to disassemble the second air valve to remove the filter element 4, which simplifies the process and reduces the difficulty of replacement and cleaning. It should be noted that the terms "first" and "second" are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The important point is that the third port of the three-way valve 3 is a port that is not connected to the first air valve 1 and the second air valve 2, thereby facilitating the removal of the filter element 4.

[0047] In one embodiment, the structure of the second air valve 2 in this application is a fast energy-saving exhaust valve disclosed in CN202418791U, and the water inlet at the lower end of the valve body of the exhaust valve is connected to the second connecting pipe 32 of the three-way valve 3 in this application.

[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. An air valve assembly, characterized in that: It includes a first air valve (1) and a second air valve (2), which are connected by a three-way valve (3); the three-way valve (3) includes a first port, a second port and a third port; The first port and the second port of the three-way valve (3) are respectively connected to the first air valve (1) and the second air valve (2), so that the inner channel of the three-way valve (3) is connected to the valve chamber of the first air valve (1) and the second air valve (2); A filter element (4) is provided inside the three-way valve (3); and one end of the filter element (4) faces the third port of the three-way valve (3).

2. The air valve assembly according to claim 1, characterized in that: The three-way valve (3) includes a horizontal section and an extension section that is inclined relative to the horizontal section, and the filter element (4) is located in the horizontal section of the three-way valve (3).

3. The air valve assembly according to claim 2, characterized in that: The horizontal section of the three-way valve (3) includes a first connecting pipe (31) and a third connecting pipe (33) connected together, and the extension section of the three-way valve (3) is a second connecting pipe (32); the first port is located at one end of the first connecting pipe (31), the second port is located at one end of the second connecting pipe (32), and the third port is located at one end of the third connecting pipe (33).

4. The air valve assembly according to claim 3, characterized in that: The first port is connected to the first air valve (1), the second port is connected to the second air valve (2), and the third port is connected to a detachable end cap (5).

5. The air valve assembly according to claim 4, characterized in that: The filter element (4) is a cylindrical filter screen; one end of the filter screen is located in the first connecting pipe (31) and faces the first air valve (1), and the other end is located in the third connecting pipe (33) and faces the end cap (5); and the side of the filter screen facing the second connecting pipe (32) completely covers the opening of the second connecting pipe (32).

6. The air valve assembly according to any one of claims 1-5, characterized in that: The first air valve (1) is an intake valve, and the second air valve (2) is a combined exhaust valve; The first air valve (1) includes a valve body (11), a valve cavity (12) is opened in the valve body (11), and a main air intake, a water inlet and a connection port are also opened on the valve body (11), all of which are connected to the valve cavity (12). The connection port is connected to the three-way valve (3). A valve disc assembly for opening or closing the main air intake is provided in the valve cavity (12).

7. The air valve assembly according to claim 6, characterized in that: The valve assembly includes a valve disc (14) that can move up and down, and the valve disc (14) is connected to one end of the valve shaft (13).

8. The air valve assembly according to claim 6, characterized in that: A valve seat (15) is installed at the main air intake, and a valve seat sealing ring (16) is provided on the inner side of the valve seat (15).

9. The air valve assembly according to claim 7, characterized in that: The valve shaft (13) is vertically positioned at the axial center of the main air intake.

10. The air valve assembly according to claim 7, characterized in that: An elastic element is installed at the upper end of the valve shaft (13) to constrain the valve disc (14).

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