Exhaust valve

Abstract

The utility model relates to an exhaust valve, relates to exhaust valve technical field, including valve body, valve seat, seal subassembly, exhaust hood and protective sleeve, valve seat is provided on the top of valve body, valve seat and valve body are provided with first threaded hole, valve seat and valve body bolt connection, seal subassembly is provided in the valve body, exhaust hood is provided with the protective sleeve, the protective sleeve is provided with the protective sleeve. A first mounting groove is formed in the valve seat, one end of the protective sleeve is located in the first mounting groove and abuts against the valve seat, a second mounting groove is formed in the exhaust hood, the end, away from the valve seat, of the protective sleeve is located in the second mounting groove and abuts against the exhaust hood, and second threaded holes are formed in the valve seat and the exhaust hood. The valve seat is in bolted connection with the exhaust hood, and a plurality of exhaust holes are formed in the exhaust hood. The exhaust hood and the protective sleeve are arranged, so that external foreign matters can be prevented from entering the exhaust valve to interfere with normal work of the exhaust valve.

Description

Technical Field

[0001] This application relates to the technical field of exhaust valves, and particularly to an exhaust valve. Background Art

[0002] An exhaust valve, abbreviated as an air valve, is widely used in long-distance water conveyance pipelines and urban water supply pipe network systems. It has the functions of exhausting a large amount of air during the initial water filling, exhausting air under pressure during pipeline operation, and sucking in a large amount of air when the pipeline has negative pressure, playing an important role in protecting against water hammers such as filling water hammers, closing water hammers, and negative pressure water hammers in the pipeline.

[0003] Currently, a Chinese utility model patent application with a publication date of December 05, 2023 and a publication number of CN220134641U provides an exhaust valve, which includes a valve body, a valve cover, and a floating ball. The floating ball can float up and down and its bottom is semi-circular. The valve cover is provided with a sealing seat and an exhaust port at its top. The sealing seat is an annular structure that cooperates with the floating ball; the top of the floating ball is a concave arc surface that bulges upward. There is a receiving cavity inside the valve cover and above the sealing seat, and the top of the receiving cavity communicates with the exhaust port; the sealing seat is a soft sealing ring, and there is an arc-shaped hole that is smaller at the top and larger at the bottom and cooperates with the lower part of the concave arc surface at its central hole; a plurality of sealing convex rings are arranged side by side up and down on the inner wall of the arc-shaped hole, and the sealing convex rings are coaxially arranged with the floating ball; when the floating ball floats up, the upper part of the concave arc surface extends into the receiving cavity, and the lower part of the concave arc surface contacts the inner wall of the arc-shaped hole or the sealing convex ring. Setting the top of the floating ball as an arch can withstand a large pressure under relatively thin conditions, reducing costs and the weight of the floating ball; sealing can be achieved under relatively small pressure.

[0004] In the exhaust valve in the related art, since there is no protective device outside the exhaust port, foreign matters outside the exhaust valve are likely to enter the exhaust port during the operation of the exhaust valve, causing the exhaust port to be blocked and affecting the exhaust effect of the exhaust valve. Utility Model Content

[0005] An embodiment of this application provides an exhaust valve, which can improve the technical problem that foreign objects outside are likely to enter the exhaust valve and interfere with the normal operation of the exhaust valve in the related art.

[0006] An embodiment of this application provides an exhaust valve, including: a valve body, a valve seat, a sealing component, an exhaust hood, and a protective sleeve. The valve seat is arranged at the top of the valve body. First threaded holes are opened on both the valve seat and the valve body, and the valve seat is bolted to the valve body. The sealing component is arranged inside the valve body. A first installation groove is opened on the valve seat. One end of the protective sleeve is located inside the first installation groove and abuts against the valve seat. A second installation groove is opened on the exhaust hood. The end of the protective sleeve away from the valve seat is located inside the second installation groove and abuts against the exhaust hood. Second threaded holes are opened on both the valve seat and the exhaust hood, and the valve seat is bolted to the exhaust hood. A plurality of exhaust holes are opened on the exhaust hood.

[0007] In the technical solution described above in the embodiments of the present application, there are at least the following technical effects: When the exhaust valve works in a relatively harsh environment, the exhaust hood and the protective sleeve can block foreign matters such as sand and soil outside the exhaust valve from entering the inside of the exhaust valve, preventing it from blocking the internal structure of the exhaust valve and causing the exhaust valve to malfunction. At the same time, the exhaust hood allows the gas inside and outside the exhaust valve to exchange, without affecting the exhaust work of the exhaust valve.

[0008] The exhaust valve provided in the embodiments of the present application is provided with an exhaust hood and a protective sleeve, which can block foreign matters from entering the inside of the exhaust valve and interfering with the normal operation of the exhaust valve.

[0009] In some embodiments, the sealing assembly includes a bushing, a floating ball, a valve flap, an exhaust pipe, and a fixing ring. A plurality of through holes are formed in the bushing. The outer peripheral surface of the bushing is welded to the inner peripheral surface of the valve seat. The floating ball is arranged inside the bushing and abuts against the inner peripheral surface of the bushing. A bracket is arranged on the valve seat. The exhaust pipe passes through the bracket and is slidably connected to the bracket. A limiting ring is sleeved on the exhaust pipe. The valve flap is sleeved on the exhaust pipe and abuts against the bottom of the limiting ring. One end of the exhaust pipe away from the bracket is provided with a thread. A third threaded hole is formed in the fixing ring. The fixing ring is threadedly connected to the exhaust pipe. The top of the fixing ring abuts against the valve flap, and the bottom of the fixing ring abuts against the floating ball.

[0010] In some embodiments, a water inlet hole is formed at the bottom of the bushing.

[0011] In some embodiments, a sealing ring is sleeved on the exhaust pipe. The top of the sealing ring abuts against the valve flap, and the bottom of the sealing ring abuts against the fixing ring.

[0012] In some embodiments, a buffer pad is arranged on the top of the valve flap, and the buffer pad is fixedly connected to the valve flap.

[0013] In some embodiments, a guiding ring is arranged on the bracket. The exhaust pipe passes through the guiding ring and is slidably connected to the guiding ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic diagram of the overall structure of an exhaust valve provided by an embodiment of the present application;

[0016] Figure 2A cross-sectional view of an exhaust valve provided by an embodiment of the present application;

[0017] Figure 3 is Figure 2 an enlarged view of part A;

[0018] Figure 4 is Figure 2 an enlarged view of part B;

[0019] Figure 5 is Figure 2 an enlarged view of part C.

[0020] Among them, each reference numeral in the figure:

[0021] 1, valve body; 11, first threaded hole; 2, valve seat; 21, first installation groove; 22, second threaded hole; 23, bracket; 231, guiding ring; 31, bushing; 312, water inlet hole; 311, through hole; 32, floating ball; 33, valve flap; 331, buffer pad; 34, exhaust pipe; 342, sealing ring; 341, limiting ring; 35, fixing ring; 351, third threaded hole; 4, exhaust hood; 41, second installation groove; 42, exhaust hole; 5, protective sleeve. Detailed implementation manners

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0027] In the present application, "and / or" is merely an associative relationship describing the associated objects, indicating that three relationships may exist; for example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0028] It should be noted that in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to give examples, illustrations or explanations. Any embodiment or design solution described as "in some embodiments", "exemplarily", "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present relevant concepts in a specific manner, meaning that the specific features, structures or characteristics described in combination with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0029] The exhaust valve, abbreviated as the air valve, is widely used in long-distance water conveyance pipelines and urban water supply pipe network systems. It has the functions of exhausting a large amount of air during the initial water filling, exhausting air under pressure during pipeline operation, and sucking in a large amount of air when the pipeline has negative pressure, playing an important role in protecting against water hammers such as filling water hammer, closing water hammer, and negative pressure water hammer in the pipeline.

[0030] An exhaust valve in the related art, with a publication number of CN220134641U, includes a valve body, a valve cover, and a floating ball. The floating ball can float up and down, and its bottom is semi-circular. The valve cover is provided with a sealing seat and an exhaust port at its top. The sealing seat is an annular structure that cooperates with the floating ball; the top of the floating ball is a concave arc surface that bulges upward. Inside the valve cover and above the sealing seat, there is a receiving cavity, and the top of the receiving cavity is communicated with the exhaust port; the sealing seat is a soft sealing ring, and at the center hole thereof, there is an arc-shaped hole that is smaller at the top and larger at the bottom and cooperates with the lower part of the concave arc surface; on the inner wall of the arc-shaped hole, a plurality of sealing convex rings are arranged side by side up and down, and the sealing convex rings are coaxially arranged with the floating ball; when the floating ball floats upward, the upper part of the concave arc surface extends into the receiving cavity, and the lower part of the concave arc surface contacts the inner wall of the arc-shaped hole or the sealing convex ring. By setting the top of the floating ball as an arch shape, it can withstand a large pressure under a relatively thin condition, which can reduce costs and the weight of the floating ball; sealing can be achieved under a relatively small pressure.

[0031] However, since there is no protective device outside the exhaust port of an exhaust valve in the related art, sundries outside the exhaust valve are likely to enter the inside of the exhaust port during operation of the exhaust valve, causing the exhaust port to be blocked and affecting the exhaust effect of the exhaust valve.

[0032] Based on this, to improve the problems in the related art, the embodiments of the present application provide the following solutions.

[0033] Please refer to Figure 1 and Figure 2 , the embodiments of the present application provide an exhaust valve, including a valve body 1, a valve seat 2, a sealing assembly, an exhaust hood 4, and a protective sleeve 5.

[0034] Please refer to Figures 2 to 5, the valve seat 2 is arranged at the top of the valve body 1. First threaded holes 11 are provided on both the valve seat 2 and the valve body 1. The valve seat 2 is bolted to the valve body 1. The sealing assembly is arranged inside the valve body 1. The sealing assembly includes a bushing 31, a floating ball 32, a valve flap 33, an exhaust pipe 34 and a fixing ring 35. A plurality of through holes 311 are provided on the bushing 31. A water inlet hole 312 is further provided at the bottom of the bushing 31. The outer peripheral surface of the bushing 31 is welded to the inner peripheral surface of the valve seat 2. The floating ball 32 is arranged inside the bushing 31 and abuts against the inner peripheral surface of the bushing 31. A bracket 23 is arranged on the valve seat 2. A guide ring 231 is arranged on the bracket 23. The exhaust pipe 34 passes through the guide ring 231 and is slidably connected to the guide ring 231. A limit ring 341 is sleeved on the exhaust pipe 34. The valve flap 33 is sleeved on the exhaust pipe 34 and abuts against the bottom of the limit ring 341. A buffer pad 331 is arranged at the top of the valve flap 33. The buffer pad 331 is fixedly connected to the valve flap 33. A sealing ring 342 is also sleeved on the exhaust pipe 34. The top of the sealing ring 342 abuts against the valve flap 33. The end of the exhaust pipe 34 away from the bracket 23 is provided with a thread. A third threaded hole 351 is provided on the fixing ring 35. The fixing ring 35 is threadedly connected to the exhaust pipe 34. The top of the fixing ring 35 abuts against the sealing ring 342. The bottom of the fixing ring 35 abuts against the floating ball 32.

[0035] As can be seen from the above, for the exhaust valve provided in the embodiment of the present application, when the pipeline connected to the bottom of the exhaust valve starts to transport liquid, the gas inside the pipeline accumulates at the bottom of the exhaust valve. The gas enters the inside of the valve body 1 through the water inlet of the valve body 1 and enters the inside of the bushing 31 through the through hole 311. At this time, the floating ball 32 is at the lowest point, the valve flap 33 is separated from the valve seat 2, and the gas passes through the inside of the valve seat 2 and is discharged from the water outlet of the valve seat 2 of the exhaust valve. As the gas in the pipeline is discharged, the liquid transported in the pipeline starts to enter the inside of the valve body 1, and the water level inside the valve body 1 continuously rises. The liquid exerts pressure on the bottom of the floating ball 32 through the water inlet hole 312, and the floating ball 32 starts to float and pushes up the fixing ring 35 and the valve flap 33. The exhaust pipe 34 slides inside the guiding ring 231, and the guiding ring 231 plays a limiting role on the exhaust pipe 34 to prevent the exhaust pipe 34 from shifting during sliding. After the gas inside the valve body 1 is exhausted, the floating ball 32 moves to the highest point, the valve flap 33 abuts against the valve seat 2 to form a seal to block the liquid from flowing out, the bottom of the fixing ring 35 contacts the top of the sphere to form a seal to prevent the liquid from flowing out from the exhaust pipe 34, and the sealing ring 342 seals the gap between the fixing ring 35 and the valve flap 33 to prevent the liquid from leaking from here. At this time, the exhaust valve is in the closed state. When the pipeline transports liquid, a small amount of gas may still enter the inside of the valve body 1. After the gas accumulates to a certain extent at the top of the valve body 1, the water level inside the valve body 1 drops, but the valve flap 33 still remains in contact with the valve seat 2 and is sealed under the pressure of the liquid and gas. The height of the floating ball 32 also starts to drop due to the drop of the water level, and the floating ball 32 is separated from the fixing plate. The gas can be discharged from the valve body 1 through the exhaust pipe 34. After the gas is discharged, the water level inside the valve body 1 starts to rise, and the floating ball 32 rises and continues to abut against the fixing ring 35 to form a seal. The buffer pad 331 can buffer the collision force generated when the valve flap 33 contacts the valve seat 2, slow down the damage speed of the valve flap 33 and the valve seat 2, and increase the service life of the exhaust valve.

[0036] Please refer to Figure 2 and Figure 5 , a first installation groove 21 is formed on the valve seat 2. One end of the protective sleeve 5 is located inside the first installation groove 21 and abuts against the valve seat 2. A second installation groove 41 is formed on the exhaust hood 4. The end of the protective sleeve 5 away from the valve seat 2 is located inside the second installation groove 41 and abuts against the exhaust hood 4. Second threaded holes 22 are formed on both the valve seat 2 and the exhaust hood 4. The valve seat 2 and the exhaust hood 4 are bolted together. A plurality of exhaust holes 42 are formed on the exhaust hood 4.

[0037] As can be seen from the above, when the exhaust valve works in a relatively harsh environment, the exhaust hood 4 and the protective sleeve 5 can block foreign matters such as sand and soil outside the exhaust valve from entering the inside of the exhaust valve, preventing it from blocking the internal structure of the exhaust valve and making the exhaust valve unable to work properly. At the same time, the exhaust hood 4 allows the gas inside and outside the exhaust valve to exchange, without affecting the exhaust work of the exhaust valve.

[0038] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An exhaust valve, characterized in that: The invention comprises a valve body (1), a valve seat (2), a sealing assembly, an exhaust hood (4) and a protective sleeve (5), wherein the valve seat (2) is arranged at the top of the valve body (1), the valve seat (2) and the valve body (1) are both provided with a first threaded hole (11), the valve seat (2) and the valve body (1) are bolted together, the sealing assembly is arranged inside the valve body (1), the valve seat (2) is provided with a first mounting groove (21), one end of the protective sleeve (5) is located inside the first mounting groove (21) and abuts against the valve seat (2), the exhaust hood (4) is provided with a second mounting groove (41), one end of the protective sleeve (5) away from the valve seat (2) is located inside the second mounting groove (41) and abuts against the exhaust hood (4), the valve seat (2) and the exhaust hood (4) are both provided with a second threaded hole (22), the valve seat (2) and the exhaust hood (4) are bolted together, and the exhaust hood (4) is provided with a plurality of exhaust holes (42).

2. An exhaust valve according to claim 1, characterized in that: The sealing assembly comprises a bushing (31), a floating ball (32), a valve flap (33), an exhaust pipe (34) and a fixing ring (35); the bushing (31) is provided with a plurality of through holes (311); the outer peripheral surface of the bushing (31) is welded to the inner peripheral surface of the valve seat (2); the floating ball (32) is arranged inside the bushing (31) and abuts against the inner peripheral surface of the bushing (31); a bracket (23) is arranged on the valve seat (2); the exhaust pipe (34) passes through the bracket (23) and slides with the bracket (23) The exhaust pipe (34) is connected with a limiting ring (341) on the exhaust pipe, the valve flap (33) is mounted on the exhaust pipe (34) and abuts against the bottom of the limiting ring (341), the exhaust pipe (34) is provided with a thread at one end away from the bracket (23), a third threaded hole (351) is provided on the fixing ring (35), the fixing ring (35) is threadedly connected to the exhaust pipe (34), the top of the fixing ring (35) abuts against the valve flap (33), and the bottom of the fixing ring (35) abuts against the float (32).

3. An exhaust valve according to claim 2, characterized in that: The bottom of the bushing (31) is provided with a water inlet hole (312).

4. An exhaust valve according to any one of claims 2-3, characterized in that: A sealing ring (342) is sleeved on the exhaust pipe (34), the top of the sealing ring (342) abuts against the valve flap (33), and the bottom of the sealing ring (342) abuts against the fixing ring (35).

5. An exhaust valve according to claim 4, characterized in that: A buffer pad (331) is provided on the top of the valve flap (33), and the buffer pad (331) is fixedly connected to the valve flap (33).

6. An exhaust valve according to claim 5, characterized in that: The bracket (23) is provided with a guide ring (231), and the exhaust pipe (34) passes through the guide ring (231) and is slidably connected to the guide ring (231).

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