Air valve with filtering device

Abstract

The utility model relates to the technical field of air valves, in particular to an air valve with a filtering device, which comprises a valve body, the lower end of the valve body is communicated with a pipeline, a valve cover is fixed at an upper port of the valve body, and an exhaust pipe capable of rising to exhaust vertically penetrates through the center of the valve cover. Air inlet pipes are detachably installed at the positions, close to the left side and the right side, of the upper surface of the valve deck, filter cartridges are fixed to air inlets of the air inlet pipes, baffles are fixed to the lower ends of the exhaust pipes, springs located on the baffles sleeve the outer sides of the exhaust pipes, and valve plates located on the springs sleeve the outer sides of the exhaust pipes; and the valve plate blocks the air inlet pipe under the jacking of the spring. When air is supplemented to the pipeline in the negative pressure state, the valve plate is pressed by external air pressure to overcome the elastic force of the spring to move downwards so that air can enter the air inlet pipe, the air inlet pipe filters the air through the filter cartridge during air inflow, and the problem that dust and impurities enter the pipeline together to pollute water in the pipeline is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air valves, in particular to an air valve with a filtering device. Background Art

[0002] During the water distribution process, water supply pipelines can experience problems such as air locks, pipe bursts, and water hammer, which can cause equipment damage. These problems can severely impact normal water supply, reduce water supply efficiency, and even paralyze some water supply projects. Installing an air valve of the appropriate type and size on the pipeline can resolve most of these issues.

[0003] Chinese patent publication number CN110296249B discloses an air valve installed on a pipeline, comprising a valve body, a valve cover, a first valve core assembly, a barrel assembly, a second valve core assembly, and a micro-exhaust valve. The valve cover is mounted on the valve body, the valve body defines a valve cavity, one end of the valve body defines an inlet for connection to the pipeline, the valve cover defines an outlet, the barrel assembly is mounted on the valve cover and one end of the barrel assembly extends into the valve cavity, the first valve core assembly is sleeved on the barrel assembly and can move along the barrel assembly to open or seal the outlet, the barrel assembly defines a first communicating hole, a second communicating hole, and an exhaust hole, respectively communicating with the interior thereof, the micro-exhaust valve is mounted on the barrel assembly and communicates with the interior of the barrel assembly through the second communicating hole, and the second valve core assembly is housed in the barrel assembly for opening or sealing the exhaust hole.

[0004] The above-mentioned air valve allows air to enter the pipeline through the outlet under negative pressure conditions, thereby allowing a large amount of air to enter the pipeline, preventing the pipeline from collapsing or the inner lining of the pipeline from falling off due to instability caused by negative pressure. However, when air enters the pipeline, it will be accompanied by dust and impurities, which will enter the pipeline and pollute the water in the pipeline. Utility Model Content

[0005] In order to solve the problem that dust and impurities enter the pipeline together with the air valve when replenishing air into the pipeline and pollute the water in the pipeline, the utility model proposes an air valve with a filtering device.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions: an air valve with a filtering device, including a valve body, the lower end of the valve body is connected to the pipeline, and a valve cover is fixed at the upper port of the valve body, an exhaust pipe that can exhaust upward is vertically penetrated by the center of the valve cover, and the upper surface of the valve cover near the left and right sides can be disassembled and installed with an intake pipe, a filter cartridge is fixed at the air inlet of the intake pipe, a baffle is fixed at the lower end of the exhaust pipe, and a spring located on the baffle is mounted on the outside of the exhaust pipe, a valve plate located on the spring is mounted on the outside of the exhaust pipe, the valve plate blocks the intake pipe when tightened by the spring, and a baffle rod is fixed to the inside of the valve body to limit the downward movement of the exhaust pipe.

[0007] As a preferred solution, a threaded head is provided at the lower end of the air inlet pipe, and a retaining ring is fixed at a position of the air inlet pipe near the threaded head.

[0008] As a preferred solution, the lower end of the filter cartridge is connected to the air inlet pipe, and the upper end of the filter cartridge is opened. A perforated plate is fixed on the inner side of the filter cartridge, and a cover plate for air intake is fixed at the upper port of the filter cartridge. Filter cotton is arranged between the perforated plate and the cover plate.

[0009] As a preferred solution, the upper end of the exhaust pipe is closed, and a plurality of exhaust holes are evenly arranged vertically on the outer circumferential surface of the exhaust pipe near the upper end, and an air hole is opened in the center of the baffle.

[0010] As a preferred solution, a sleeve hole is opened in the center of the valve plate for sleeve on the exhaust pipe, and a rubber plate is fixed on the upper side of the valve plate, a plurality of plugs are fixed on the lower side of the rubber plate, and a socket is opened on the upper surface of the valve plate for matching with the plugs.

[0011] As a preferred solution, a connecting flange is fixed to the edge of the lower port of the valve cover, a guide sleeve is fixed to the center of the upper end surface of the valve cover, and a mounting hole that cooperates with the threaded head is opened on the upper surface of the valve cover.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] First, when the pipeline is in a negative pressure state, the external air pressure presses the valve plate to overcome the elastic force of the spring and move downward to allow air to enter the intake pipe. The intake pipe filters the air through the filter cartridge when taking in air, preventing dust and impurities from entering the pipeline and polluting the water in the pipeline.

[0014] Secondly, when the gas in the pipeline needs to be discharged, the gas presses the exhaust pipe to overcome the elastic force of the spring and move upward. When the exhaust hole of the exhaust pipe is higher than the top of the guide sleeve, exhaust is achieved. If the gas pressure in the pipeline is high, the exhaust pipe will be pressed to continue to move upward. At this time, the number of exhaust holes higher than the guide sleeve increases, further increasing the exhaust effect, which can better meet the real-time adjustment during exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the exhaust pipe of the present utility model;

[0017] Figure 3 It is a schematic diagram of the filter cartridge of the present utility model;

[0018] Figure 4 It is a schematic diagram of the valve plate of the present utility model;

[0019] Figure 5 It is a schematic diagram of the valve cover of the present utility model.

[0020] In the figure: 1. Valve body; 2. Valve cover; 21. Connecting flange; 22. Guide sleeve; 23. Mounting hole; 3. Inlet pipe; 31. Retaining ring; 32. Threaded head; 4. Exhaust pipe; 41. Exhaust hole; 42. Baffle; 43. Air hole; 5. Filter cartridge; 51. Cover plate; 52. Filter cotton; 53. Orifice plate; 6. Valve plate; 61. Rubber plate; 62. Plug column; 63. Socket; 64. Sleeve hole; 7. Spring; 8. Stop rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0024] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0026] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0027] like Figure 1 、 Figure 2 and 3 As shown, an air valve with a filtering device includes a valve body 1, the lower end of the valve body 1 is connected to the pipeline, and a valve cover 2 is fixed to the upper end of the valve body 1, an exhaust pipe 4 that can be raised to exhaust is vertically penetrated through the center of the valve cover 2, and an intake pipe 3 is detachably installed near the left and right sides of the upper surface of the valve cover 2, a filter cartridge 5 is fixed to the air inlet of the intake pipe 3, a baffle 42 is fixed to the lower end of the exhaust pipe 4, and a spring 7 located on the baffle 42 is sheathed on the outside of the exhaust pipe 4. A valve plate 6 located on a spring 7 is mounted on the outside. The valve plate 6 blocks the intake pipe 3 when the spring 7 is tightened. A stop rod 8 is fixed to the inside of the valve body 1 to limit the downward movement of the exhaust pipe 4. When the pipeline is in a negative pressure state, the external air pressure presses the valve plate 6 to overcome the elastic force of the spring 7 and move downward to allow air to enter the intake pipe 3. The intake pipe 3 filters the air through the filter cartridge 5 when taking in air, preventing dust and impurities from entering the pipeline and polluting the water in the pipeline.

[0028] like Figure 3 As shown, a threaded head 32 is provided at the lower end of the air intake pipe 3 , and a retaining ring 31 is fixed near the threaded head 32 of the air intake pipe 3 . The air intake pipe 3 is fixed to the valve cover 2 through the threaded head 32 and the retaining ring 31 .

[0029] like Figure 3 As shown, the lower end of the filter cartridge 5 is connected to the air inlet pipe 3, and the upper end of the filter cartridge 5 is opened. A perforated plate 53 is fixed on the inner side of the filter cartridge 5, and a cover plate 51 for air intake is fixed at the upper end of the filter cartridge 5. Filter cotton 52 is provided between the perforated plate 53 and the cover plate 51. When the air inlet pipe 3 takes in air, the air is evenly dispersed and circulated through the perforated plate 53. At this time, the incoming air is filtered by the filter cotton 52, thereby preventing external dust and impurities from entering the pipeline.

[0030] like Figure 2 As shown, the upper end of the exhaust pipe 4 is in a closed state, and a plurality of exhaust holes 41 are provided on the outer circumferential surface of the exhaust pipe 4 near the upper end, and an air hole 43 is provided at the center of the baffle 42. The exhaust pipe 4 allows the gas in the pipeline to enter the exhaust pipe 4 through the air hole 43 and exhausts the gas outward through the exhaust hole 41.

[0031] like Figure 4 As shown, a sleeve hole 64 is opened in the center of the valve plate 6, which is sleeved on the exhaust pipe 4. The valve plate 6 is mounted on the exhaust pipe 4 by means of the sleeve hole 64. A rubber plate 61 is fixed on the upper side of the valve plate 6, which can better seal the intake pipe 3.

[0032] A plurality of plug posts 62 are fixed to the lower side of the rubber plate 61 , and a socket 63 cooperating with the plug posts 62 is provided on the upper surface of the valve plate 6 . The rubber plate 61 is fixedly mounted on the valve plate 6 by inserting the plug posts 62 into the socket 63 .

[0033] like Figure 5 As shown, a connecting flange 21 is fixed to the edge of the lower port of the valve cover 2, and the valve cover 2 is fixedly connected to the valve body 1 through the connecting flange 21; a guide sleeve 22 is fixed to the center of the upper end face of the valve cover 2, and the guide sleeve 22 is used to guide the up and down movement of the exhaust pipe 4 and to seal the exhaust pipe 4 when not exhausting; a mounting hole 23 is provided on the upper surface of the valve cover 2 to cooperate with the threaded head 32, and the valve cover 2 is installed and fixed to the intake pipe 3 through the mounting hole 23.

[0034] In this embodiment, when the pipeline is emptied or the water column is broken, when negative pressure appears in the pipeline, the external atmospheric pressure presses the valve plate 6 to overcome the elastic force of the spring 7 and move downward, so that air enters the intake pipe 3, and the intake pipe 3 filters the air through the filter cartridge 5 during the intake.

[0035] During the water filling stage of the pipeline, the gas in the pipeline presses the exhaust pipe 4 to overcome the elastic force of the spring 7 and move upward. When the exhaust hole 41 of the exhaust pipe 4 is higher than the top of the guide sleeve 22, exhaust is achieved. If the gas pressure in the pipeline is relatively high, the exhaust pipe 4 will be pressed to continue to move upward. At this time, the number of exhaust holes 41 higher than the guide sleeve 22 increases, thereby further enhancing the exhaust effect.

[0036] The above is a preferred embodiment of the present invention. Technicians in the field of the present invention can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment. Any obvious improvements, replacements or modifications made by technicians in this field on the basis of the present invention are within the scope of protection of the present invention.

Claims

1. An air valve with a filter device, comprising a valve body (1), characterized in that: The lower end of the valve body (1) is connected to the pipeline, and a valve cover (2) is fixed at the upper end of the valve body (1), an exhaust pipe (4) that can ascend and exhaust is vertically penetrated through the center of the valve cover (2), and an intake pipe (3) can be detachably installed near the left and right sides of the upper surface of the valve cover (2), a filter cartridge (5) is fixed at the air inlet of the intake pipe (3), a baffle (42) is fixed at the lower end of the exhaust pipe (4), and a spring (7) located on the baffle (42) is sleeved on the outer side of the exhaust pipe (4), a valve plate (6) located on the spring (7) is sleeved on the outer side of the exhaust pipe (4), and the valve plate (6) blocks the intake pipe (3) when tightened by the spring (7), and a stop rod (8) is fixed on the inner side of the valve body (1) to limit the downward movement of the exhaust pipe (4).

2. The air valve with a filter device according to claim 1, characterized in that: A threaded head (32) is provided at the lower end of the air intake pipe (3), and a retaining ring (31) is fixed at a position of the air intake pipe (3) close to the threaded head (32).

3. The air valve with a filter device according to claim 2, characterized in that: The lower end of the filter cartridge (5) is in communication with the air inlet pipe (3), and the upper end of the filter cartridge (5) is open. A perforated plate (53) is fixed on the inner side of the filter cartridge (5), and a cover plate (51) capable of air intake is fixed at the upper end of the filter cartridge (5). Filter cotton (52) is provided between the perforated plate (53) and the cover plate (51).

4. The air valve with a filter device according to claim 1, characterized in that: The upper end of the exhaust pipe (4) is in a closed state, and a plurality of groups of exhaust holes (41) arranged evenly in an upper and lower direction are provided on the outer circumferential surface of the exhaust pipe (4) near the upper end, and an air hole (43) is provided in the center of the baffle (42).

5. The air valve with a filter device according to claim 3, characterized in that: The center of the valve plate (6) is provided with a sleeve hole (64) sleeved on the exhaust pipe (4), a rubber plate (61) is fixed on the upper side of the valve plate (6), a plurality of plug posts (62) are fixed on the lower side of the rubber plate (61), and a socket (63) cooperating with the plug posts (62) is provided on the upper surface of the valve plate (6).

6. The air valve with a filter device according to claim 2, characterized in that: A connecting flange (21) is fixed to the edge of the lower end of the valve cover (2), and a guide sleeve (22) is fixed to the center of the upper end surface of the valve cover (2). A mounting hole (23) is provided on the upper surface of the valve cover (2) to cooperate with the threaded head (32).

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