Exhaust valve

Abstract

The exhaust valve comprises a valve body, a valve element and a floating rod, the valve body is provided with an exhaust hole and a mounting hole, a valve cavity is formed inwards in the valve body, the exhaust hole, the mounting hole and the valve cavity communicate with one another, the valve element and at least part of the floating rod are arranged in the valve cavity, and the valve element can block the exhaust hole and can open the exhaust hole under driving of the floating rod; the axis of the exhaust hole is located in the first direction, the axis of the mounting hole is located in the second direction, the length direction of the valve element is arranged in the first direction, and the length direction of the floating rod is arranged in the second direction. The floating rod is provided with a first end, a second end and a pushing part, the pushing part is located between the first end and the second end, the first end is rotationally connected to the valve body, and the second end can swing relative to the first end under the action of external force and is higher than the first end, so that the pushing part can push the valve element and open the exhaust hole. The mounting hole in the exhaust valve can be opened in the horizontal direction, so that the exhaust valve can be assembled on an external pipeline in the horizontal direction.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to an exhaust valve. Background Technology

[0002] The exhaust valve is usually installed at a high point in the system. The gas in the system accumulates at the top of the exhaust valve. When the gas in the exhaust valve increases to a certain level, the exhaust valve opens, allowing the gas in the system to be discharged through the exhaust valve. After the air in the system is removed, the exhaust valve closes.

[0003] Existing air vent valves typically use a float to pull down the seal at the vent port, connecting the vent port to the valve body and allowing air inside the valve body to be expelled from the system. Due to structural limitations, existing air vent valves are usually installed vertically alongside the connecting pipes; that is, the installation port typically opens downwards to connect to external piping. Therefore, the installation location of air vent valves is restricted, making conventional air vent valves unsuitable for some systems that can only be installed horizontally. Summary of the Invention

[0004] The purpose of this application is to solve the problems mentioned in the background art by providing an exhaust valve.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] The device includes a valve body, a valve core, and a float. The valve body has an exhaust port and a mounting hole, and a valve cavity is formed therein. The exhaust port, the mounting hole, and the valve cavity are interconnected. One end of the valve core and the float are disposed in the valve cavity. The valve core can block the exhaust port and can open the exhaust port under the drive of the float.

[0007] Wherein, the axis of the exhaust port is located in the first direction, the axis of the mounting hole is located in the second direction, and the first direction and the second direction are perpendicular to each other, the length direction of the valve core is arranged along the first direction, and the float part extends out of the mounting hole and the length direction of the float is arranged along the second direction;

[0008] The float has a first end, a second end, and a pushing part. The pushing part is located between the first end and the second end. The first end is rotatably connected to the valve body. The second end can swing relative to the first end and extend above the first end under the action of an external force, so that the pushing part can push against the valve core and open the exhaust port.

[0009] It is understandable that the length direction of the valve core is arranged along the first direction, and the length direction of the float is arranged along the second direction. The float is rotatably connected to the valve body, and the float pushes the valve core to open / close the vent hole through the pushing part of the float. This arrangement allows the up-and-down movement of the second end of the float to be converted into the left-and-right swing of the valve core. Through the cooperation between the float and the valve core, the mounting hole is set to open in the horizontal direction, so that the vent valve can be assembled into the external pipeline in the horizontal direction.

[0010] In one embodiment, the first end is configured as a ball head, the cavity wall of the valve chamber is recessed inward to form a ball socket, and the ball head is rotatably nested in the ball socket so that the float can swing around the first end.

[0011] It is understandable that a solution is to achieve a rotating connection of the float rod on the valve body by setting a ball head and a ball socket.

[0012] In one embodiment, the valve chamber wall is provided with a hinge seat, and a pin is passed through the hinge seat. The first end is connected to the hinge seat through the pin so that the float can rotate about the axis of the pin.

[0013] Understandably, another solution is to achieve a rotatable connection between the float and the valve body by setting a hinge seat and a pin.

[0014] In one embodiment, the float has a clearance space to allow the valve core to pass.

[0015] It is understandable that when the liquid level rises, the second end moves upward, the float separates from the valve core, and the lower end of the valve core is located in the clearance space, so that the float will not touch the valve core; and there is no direct assembly relationship between the float and the valve core, which facilitates production assembly.

[0016] In one embodiment, the valve core is recessed inward at one end near the float and forms a groove, and the pushing portion extends at least partially into the groove.

[0017] It is understandable that the groove of the valve core is designed to cooperate with the pushing part of the float, thereby realizing the float pushing the valve core as a specific implementation method.

[0018] In one embodiment, the float protrudes radially on the side near the second end and forms a protrusion located at the portion of the float that extends out of the mounting hole.

[0019] It is understandable that by setting a protrusion to increase the volume of the float at the second end, the volume of fluid displaced is effectively increased, the buoyancy performance of the float is improved, the float is more sensitive to changes in liquid level, and the float is easier to float.

[0020] In one embodiment, the float has a reduced diameter section located in the valve cavity and partially extending out of the mounting hole, the diameter of which gradually decreases along the second direction.

[0021] It is understandable that the diameter of the reduced section gradually decreases along the second direction. This way, when the float swings, the reduced volume on the reduced section can reserve more space, which is beneficial to increasing the swing amplitude of the float.

[0022] In one embodiment, the exhaust valve further includes an elastic element, which is sleeved on the valve core and disposed between the valve core and the valve body in a pre-compressed manner.

[0023] It is understandable that the elastic element is pre-compressed between the valve core and the valve body, so that the valve core can automatically reset under the action of the elastic element after tilting relative to the first direction.

[0024] In one embodiment, the exhaust valve further includes a sealing element disposed on the wall of the exhaust port to form a seal against the wall of the exhaust port;

[0025] The sealing element has a through hole that communicates with the vent hole. The valve core has a sealing surface at one end near the vent hole. The sealing surface abuts against the sealing element and blocks the through hole. The sealing surface can form a gap channel with the sealing element as the valve core moves. The gap channel communicates with the through hole and the valve cavity respectively.

[0026] It is understandable that by opening a through hole in the seal and setting the sealing surface of the valve core to cooperate with the through hole of the seal, when the exhaust valve does not need to exhaust, the valve core has a good sealing effect on the through hole, effectively preventing the exhaust valve from communicating with the outside atmosphere. When the exhaust valve needs to exhaust, a gap channel can be formed between the sealing surface and the seal, allowing the outside atmosphere to communicate with the valve cavity through the gap channel.

[0027] In one embodiment, the exhaust valve further includes a plug that can be fitted onto the outer wall of the exhaust port to seal the exhaust port; wherein the plug and the outer wall of the exhaust port are configured to be detachably connected.

[0028] Understandably, the plug can be installed or removed according to actual needs. For example, when the system needs to vent, the plug can be removed from the valve body to open the vent hole. When the system needs to be repaired, adjusted, or shut down, the plug can be installed on the valve body to close the vent hole.

[0029] Due to the application of the above solution, this application has the following advantages compared with the prior art:

[0030] This application claims an exhaust valve in which the length direction of the valve core is arranged along a first direction and the length direction of the float is arranged along a second direction. The float is rotatably connected to the valve body and pushes the valve core to open / close the exhaust port through the pushing part of the float. This arrangement allows the up-and-down movement of the second end of the float to be converted into the left-and-right swing of the valve core, so that the mounting hole of the exhaust valve can be assembled into an external pipeline along the horizontal direction. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an exhaust valve provided in an embodiment of this application from one perspective;

[0033] Figure 2 This is a schematic diagram of the exhaust valve provided in one embodiment of this application from another perspective;

[0034] Figure 3 This is a cross-sectional view of an exhaust valve provided in an embodiment of this application.

[0035] Reference numerals: 100, exhaust valve; 10, valve body; 11, valve cavity; 12, exhaust port; 13, mounting hole; 20, valve core; 21, sealing surface; 30, float; 31, first end; 32, second end; 33, pushing part; 34, clearance space; 35, protrusion; 36, reduced diameter section; 40, elastic element; 50, sealing element; 51, through hole; 60, plug. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is 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 can mean that the first feature is 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.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0041] Please see Figures 1 to 3 An embodiment of this application provides an exhaust valve 100, including a valve body 10, a valve core 20, and a float 30. The valve body 10 has an exhaust hole 12 and a mounting hole 13, and a valve cavity 11 is formed inward. The exhaust hole 12, the mounting hole 13, and the valve cavity 11 are interconnected. One end of the valve core 20 and the float 30 are disposed in the valve cavity 11. The cross-section of the valve core 20 is T-shaped. The valve core 20 can block the exhaust hole 12 and can open the exhaust hole 12 under the drive of the float 30.

[0042] Among them, the axis of the exhaust port 12 is located in the first direction (e.g., Figure 3As shown in the X direction), the axis of mounting hole 13 is located in the second direction (e.g., Figure 3 As shown in the Y direction, and with the first direction perpendicular to the second direction, the valve core 20 is arranged along the first direction in its length direction, and the float 30 is arranged along the second direction in its length direction. The way the float 30 and valve core 20 are coupled allows the mounting hole 13 to open horizontally, so that the exhaust valve 100 can be horizontally assembled onto an external pipeline.

[0043] When the liquid level in the system connected to the vent valve 100 decreases, the liquid level in the valve body 10 drops. At this time, the float 30 tilts downward, causing the valve core 20 to open the vent hole 12 and release the air in the valve body 10. When the liquid level in the system connected to the vent valve 100 increases, the liquid level in the valve body 10 rises, and the vent hole 12 remains closed to prevent liquid leakage.

[0044] like Figure 3 As shown, in this embodiment, the first end 31 is set as a ball head, the cavity wall of the valve cavity 11 is recessed inward and forms a ball socket, the ball head is rotatably nested in the ball socket, so that the float 30 can swing three-dimensionally around the first end 31, thereby realizing a scheme for the float 30 to be rotatably connected on the valve body 10.

[0045] In another embodiment, a hinge seat (not shown) can be provided on the cavity wall of the valve cavity 11. A pin is provided on the hinge seat, and the first end 31 is connected to the hinge seat through the pin, so that the float 30 can rotate around the axis of the pin and swing up and down, thereby realizing another solution for the float 30 to be rotatably connected on the valve body 10.

[0046] In one embodiment, the float 30 has a first end 31, a second end 32, and a pushing part 33. The pushing part 33 is located between the first end 31 and the second end 32. The first end 31 is located in the valve cavity 11 and is rotatably connected to the valve body 10. The second end 32 can swing relative to the first end 31 and extend above the first end 31 under the action of an external force, so that the pushing part 33 can push against the valve core 20 and open the exhaust port 12. The length direction of the valve core 20 is arranged along a first direction, and the length direction of the float 30 is arranged along a second direction. The float 30 is rotatably connected to the valve body 10, and the pushing part 33 of the float 30 pushes the valve core 20 to open / close the exhaust port 12. This arrangement allows the up-and-down movement of the second end 32 of the float 30 to be converted into the left-and-right swing of the valve core 20.

[0047] In another embodiment, the valve core 20 is recessed inward at one end near the float 30 and forms a groove (not shown). The pushing part 33 extends at least partially into the groove. The groove of the valve core 20 cooperates with the pushing part 33 of the float 30, thereby realizing a specific implementation of the float 30 pushing the valve core 20.

[0048] like Figure 3As shown, in one embodiment, a clearance space 34 is formed on the float 30 to avoid the valve core 20. When the liquid level rises, the second end 32 moves upward, the float 30 separates from the valve core 20, and the lower end of the valve core 20 is located in the clearance space 34, so that the float 30 will not touch the valve core 20.

[0049] It should be noted that in existing exhaust valves, the float and valve core are usually connected by means of connecting rods or hinges. However, the exhaust valve of this application is designed so that there is no direct assembly relationship between the float 30 and the valve core 20 through the cooperation of the float 30 and the valve core 20, which facilitates production and assembly.

[0050] In one embodiment, the float 30 has a radially protruding portion 35 on the side near the second end 32, the protrusion 35 being located at the portion of the float 30 extending out of the mounting hole 13. The protrusion 35 increases the volume of the float 30 at the second end 32, effectively increasing the volume of displaced fluid, improving the buoyancy performance of the float 30, making the float 30 more sensitive to changes in liquid level, and making the float 30 easier to float.

[0051] In this embodiment, the float 30 is made of plastic so that it can float on the liquid surface. Specifically, the float 30 may be made of PP (polypropylene) material.

[0052] In one embodiment, the float 30 has a reduced diameter section 36 located in the valve cavity 11 and partially extending out of the mounting hole 13. Along the second direction, the diameter of the reduced diameter section 36 gradually decreases, so that when the float 30 swings, the reduced volume on the reduced diameter section 36 can reserve more space, which is beneficial to increasing the swing amplitude of the float 30.

[0053] In one embodiment, the exhaust valve 100 further includes an elastic element 40, which is sleeved on the valve core 20 and pre-compressed between the valve core 20 and the valve body 10, so that the valve core 20 can automatically reset under the action of the elastic element 40 after tilting relative to the first direction.

[0054] In this embodiment, the elastic element 40 is a conical spring. Of course, in other embodiments, the elastic element 40 may also be a disc spring or a spring plunger, etc.

[0055] In one embodiment, the exhaust valve 100 further includes a sealing element 50, which is disposed on the wall of the exhaust hole 12 to form a seal against the wall of the exhaust hole 12. The sealing element 50 has a through hole 51 that communicates with the exhaust hole 12. A sealing surface 21 is formed at one end of the valve core 20 near the exhaust hole 12. The sealing surface 21 abuts against the sealing element 50 and blocks the through hole 51. The sealing surface 21 can form a gap channel with the sealing element 50 as the valve core 20 moves, and the gap channel communicates with both the through hole 51 and the valve cavity 11. Thus, when the exhaust valve 100 does not need to exhaust, the valve core 20 provides a good seal to the through hole 51, effectively preventing the exhaust valve 100 from communicating with the external atmosphere. When the exhaust valve 100 needs to exhaust, a gap channel can be formed between the sealing surface 21 and the sealing element 50, allowing the external atmosphere to communicate with the valve cavity 11 through the gap channel.

[0056] In one embodiment, the exhaust valve 100 further includes a plug 60, which can be sleeved on the outer wall of the exhaust port 12 to seal the exhaust port 12. The plug 60 and the outer wall of the exhaust port 12 are detachably connected, allowing the plug 60 to be installed or removed as needed. For example, when the system needs to vent, the plug 60 can be removed from the valve body 10 to open the exhaust port 12; when the system needs maintenance, debugging, or closure, the plug 60 can be installed on the valve body 10 to close the exhaust port 12.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An exhaust valve characterized by, The exhaust valve (100) comprises a valve body (10), a valve core (20) and a float rod (30), the valve body (10) is provided with an exhaust hole (12) and a mounting hole (13) and is formed with a valve cavity (11) inwardly, the exhaust hole (12), the mounting hole (13) and the valve cavity (11) are communicated with each other, the valve core (20) and one end of the float rod (30) are arranged in the valve cavity (11), the valve core (20) can block the exhaust hole (12) and can open the exhaust hole (12) under the driving of the float rod (30); The axis of the exhaust hole (12) is located in a first direction, the axis of the mounting hole (13) is located in a second direction, the first direction and the second direction are arranged perpendicularly, the length direction of the valve core (20) is arranged along the first direction, the float rod (30) partially extends out of the mounting hole (13) and the length direction of the float rod (30) is arranged along the second direction; The float rod (30) has a first end (31), a second end (32) and a pushing part (33), the pushing part (33) is located between the first end (31) and the second end (32), the first end (31) is rotatably connected to the valve body (10), the second end (32) can swing relative to the first end (31) and is higher than the first end (31) under the action of an external force, so that the pushing part (33) can push the valve core (20) and open the exhaust hole (12).

2. An exhaust valve according to claim 1, wherein The first end (31) is provided as a ball head, the cavity wall of the valve cavity (11) is recessed inwardly and is formed with a ball socket, the ball head is rotatably nested in the ball socket, so that the float rod (30) can swing around the first end (31).

3. An exhaust valve according to claim 1 wherein, The cavity wall of the valve cavity (11) is provided with a hinge seat, a pin shaft is arranged on the hinge seat, the first end (31) is connected to the hinge seat through the pin shaft, so that the float rod (30) can rotate around the axis of the pin shaft.

4. An exhaust valve according to claim 1 wherein, The float rod (30) is formed with an avoiding space (34) for avoiding the valve core (20).

5. An exhaust valve according to claim 1 wherein, The end of the valve core (20) close to the float rod (30) is recessed inwardly and is formed with a groove, the pushing part (33) at least partially extends into the groove.

6. An exhaust valve according to claim 1 wherein, The float rod (30) is formed with a protruding part (35) on the side close to the second end (32) and protruding in the radial direction, the protruding part (35) is located on the part of the float rod (30) extending out of the mounting hole (13).

7. An exhaust valve according to claim 1 wherein, The float rod (30) has a reduced diameter section (36), the reduced diameter section (36) is located in the valve cavity (11) and partially extends out of the mounting hole (13), the diameter of the reduced diameter section (36) gradually decreases along the second direction.

8. An exhaust valve according to claim 1 wherein, The exhaust valve (100) further comprises an elastic member (40), the elastic member (40) is sleeved on the valve core (20) and is arranged in a pre-compressed manner between the valve core (20) and the valve body (10).

9. An exhaust valve according to claim 1 wherein, The exhaust valve (100) further comprises a sealing member (50) arranged on the hole wall of the exhaust hole (12) to form a seal with the hole wall of the exhaust hole (12); The sealing member (50) is provided with a through hole (51) which is in communication with the exhaust hole (12), and one end of the valve core (20) close to the exhaust hole (12) is formed with a blocking surface (21) which abuts against the sealing member (50) and blocks the through hole (51), and the blocking surface (21) can form a gap channel with the sealing member (50) along with the movement of the valve core (20), and the gap channel is in communication with the through hole (51) and the valve cavity (11) respectively.

10. The exhaust valve of claim 1 wherein, The exhaust valve (100) further comprises a blocking member (60) which can be sleeved on the outer wall of the exhaust hole (12) to block the exhaust hole (12); wherein the blocking member (60) and the outer wall of the exhaust hole (12) are detachably connected.

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