Automatic exhaust valve

Abstract

The automatic exhaust valve comprises a valve body, a valve deck, an automatic exhaust assembly and a suspension part, one end of the valve body is connected with a water pipe through a drainage hole, the other end of the valve body is connected with the valve deck in a sealed mode, the periphery of the valve body is connected with the automatic exhaust assembly through a ventilation pipeline, and the suspension part is located in a cavity of the valve body and connected with the automatic exhaust assembly. The automatic exhaust assembly comprises an exhaust plug, an elastic piece and an exhaust pipe which are sequentially connected in the axial direction of the automatic exhaust assembly, the exhaust plug and the exhaust pipe are sleeved with the elastic piece, and the exhaust plug is located at the end, stretching into the ventilation pipeline, of the automatic exhaust assembly. A sealing groove is formed in the end, facing the elastic piece, of any one of the venting plug and the exhaust pipe, a sealing piece is embedded in the sealing groove, and the two ends, in the axis direction of the automatic venting assembly, of the sealing piece abut against the venting plug and the exhaust pipe in an interference fit mode respectively. The end, facing the elastic piece, of the exhaust plug is provided with a sealing protrusion, and the end, facing the exhaust pipe, of the sealing protrusion is embedded into the exhaust through hole of the exhaust pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water supply valves, in particular to an automatic exhaust valve. BACKGROUND

[0002] The exhaust valve is a common industrial valve used to regulate the flow of gas or liquid medium in the pipeline system and achieve the exhaust function. The exhaust valve body, valve cover, exhaust assembly and suspension are directly connected, and the movement of the suspension can control the opening and closing of the exhaust assembly to complete the exhaust process.

[0003] The exhaust valve on the market is connected to the drainage pipeline. When the water flow enters the exhaust valve, water pressure fluctuations are inevitable, which may cause changes in the water flow level, and the suspension will also fluctuate, which may affect the opening of the exhaust assembly and cause water leakage. There is only one sealing element between the exhaust plug and the exhaust pipe in the exhaust assembly, and the sealing performance is not up to standard. At the same time, the opening and closing of the exhaust plug will cause friction between the sealing element and the exhaust pipe, causing damage and shortening the service life. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide an automatic exhaust valve to solve the above problems.

[0005] The embodiments of the present application can be implemented by the following technical solutions:

[0006] An automatic exhaust valve, comprising a valve body, a valve cover, an automatic exhaust assembly and a suspension, one end of the valve body is connected with a water pipe through a drainage hole, the other end is sealingly connected with the valve cover, the outer periphery of the valve body is connected with the automatic exhaust assembly through an air duct, the suspension is located in the cavity of the valve body and is connected with the automatic exhaust assembly, the automatic exhaust assembly comprises an exhaust plug, an elastic element and an exhaust pipe connected in sequence along the axial direction of the automatic exhaust assembly, the elastic element is sleeved on the exhaust plug and the exhaust pipe, and the exhaust plug is located at one end of the automatic exhaust assembly extending into the air duct;

[0007] Further, any one of the exhaust plug and the exhaust pipe has a sealing groove at one end facing the elastic element, a sealing element is embedded in the sealing groove, and the two ends of the sealing element along the axial direction of the automatic exhaust assembly are in interference fit abutment with the exhaust plug and the exhaust pipe, respectively.

[0008] Further, the exhaust plug is provided with a sealing protrusion at one end facing the elastic element, and the sealing protrusion is embedded in the exhaust through hole of the exhaust pipe at one end facing the exhaust pipe.

[0009] Further, the sealing groove has an angle structure, i.e. the opening end diameter of the sealing groove is smaller than the bottom end diameter, i.e. the sealing groove has a tapered structure.

[0010] Further, the sealing protrusion is hemispherical, comprising a planar cutting surface connected with the sealing groove and a spherical surface embedded in the exhaust hole and in point contact with the exhaust pipe, and the exhaust pipe is provided with a chamfer with a round corner and a limited angle on the circumferential outer side of the end of the spherical surface. Further, the sealing protrusion is located at the center of the sealing groove.

[0011] Further, the valve cover is provided with a suspension groove at the center for matching the suspension member, the suspension member comprising a suspension body and a suspension connecting rod connected to the top end of the suspension body, and one end of the suspension connecting rod extends into the suspension groove and is slidable along the suspension groove.

[0012] Further, the suspension connecting rod is provided with a suspension through hole in the axial direction of the automatic exhaust assembly, and the suspension through hole extends along the length direction of the suspension connecting rod.

[0013] Further, one end of the exhaust plug away from the elastic member passes through the suspension through hole and is movable in the suspension through hole.

[0014] Further, the exhaust plug comprises a plug head and a plug body, the plug head is located at the end of the exhaust plug away from the exhaust pipe, the outer diameter of the plug head is smaller than that of the plug body, the plug head passes through the suspension through hole, and the outer diameter of the plug head is smaller than the hole diameter of the suspension through hole.

[0015] Further, the plug body is provided with external threads, and the plug body is screw-connected with the elastic member through the external threads.

[0016] Further, a limiting groove is formed in the axial direction on the circumferential outer side of the suspension body, and a limiting protrusion matched with the limiting groove is arranged on the inner wall of the cavity of the valve body, the limiting protrusion is embedded in the limiting groove and is in sliding connection with the limiting groove.

[0017] Further, the automatic exhaust valve further comprises an air vent valve cap, and the air vent valve cap is located on the outer periphery of the air vent pipe and is non-detachably connected with the valve body.

[0018] The embodiment of the present application provides an automatic exhaust valve with at least the following beneficial effects:

[0019] 1. The design of the sealing protrusion in the exhaust plug further enhances the sealing performance of the automatic exhaust assembly, and the opening and closing service life of the exhaust plug is longer with the sealing protrusion as the fulcrum.

[0020] 2. Water pressure fluctuations in the valve body inevitably cause the suspended body to make slight undulating movements. The diameter of the suspended through hole is larger than the outer diameter of the vent plug head. This design provides a certain amount of room for the vent plug head to move, minimizing the possibility of the suspended body accidentally touching the vent plug and causing leakage due to the opening and closing of the vent plug. Attached Figure Description

[0021] Figure 1 This is an overall cross-sectional view of the automatic exhaust valve;

[0022] Figure 2 This is an exploded view of the automatic exhaust valve.

[0023] Figure 3 An exploded view of the automatic exhaust valve from another angle;

[0024] Figure 4 A 3D view of the suspension component;

[0025] Figure 5 This is the front view of the floating component;

[0026] Figure 6 Exploded view of the automatic exhaust assembly;

[0027] Figure 7 An exploded view of the automatic exhaust assembly from another angle;

[0028] Figure 8 This is a three-dimensional view of the valve body;

[0029] Figure 9 This is a three-dimensional view of the valve body from another angle.

[0030] Reference numerals: 1-valve body, 11-drainage hole, 12-ventilation pipe, 13-limiting protrusion, 2-valve cover, 21-suspension groove, 3-suspension component, 31-suspension body, 311-limiting groove, 321-suspension through hole, 41-exhaust plug, 411-plug head, 412-plug body, 4121-sealing groove, 4122-sealing protrusion, 42-elastic component, 43-exhaust pipe, 431-exhaust through hole, 5-ventilation valve cap, 6-electric control assembly. Detailed Implementation

[0031] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0032] The words in the specification are used for describing the embodiments of the present application, but are not intended to limit the present application. Unless otherwise explicitly defined and limited, if the terms "arranged", "connected", "connected" appear, they should be broadly understood, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be specifically understood.

[0033] In addition, in the description of the embodiments of the present application, various components on the drawing are enlarged or reduced for the convenience of understanding, but this practice is not intended to limit the protection scope of the present application.

[0034] The present application provides an automatic exhaust assembly, please refer to Figures 1 to 9 :

[0035] An automatic exhaust valve, comprising a valve body 1, a valve cover 2, an automatic exhaust assembly and a suspension 3.

[0036] Specifically, one end of the valve body 1 is provided with a drainage hole 11 for communicating with the drain pipe, and the water flow enters the cavity of the valve body 1 from the drainage hole 11, the other end of the valve body 1 is sealingly connected with the valve cover 2, and the sealing element is connected between the valve body 1 and the valve cover 2, which is connected with the two elements by interference fit, and the sealing performance is good, which can avoid the phenomenon of water leakage;

[0037] Specifically, the valve body 1 is also provided with a ventilation pipe 12, which is used to accommodate the automatic exhaust assembly for discharging gas, and the ventilation pipe 12 and the automatic exhaust assembly are also sealingly connected, which further increases the sealing performance of the automatic exhaust valve.

[0038] Specifically, the automatic exhaust assembly comprises an exhaust plug 41, an elastic element 42 and an exhaust pipe 43 connected in sequence along the axial direction thereof, the exhaust plug 41 and the exhaust pipe 43 are connected with the elastic element 42, and the two ends of the exhaust plug 41 and the exhaust pipe 43 connected with the elastic element 42 are provided with external threads matched with the elastic element 42, which can more stably connect with each other, and the exhaust plug 41 is located at one end of the automatic exhaust assembly extending into the ventilation pipe 12;

[0039] Specifically, one end of the exhaust plug 41 towards the elastic member 42 is provided with a sealing protrusion 4122, which is embedded into the exhaust hole 431 of the exhaust pipe 43; specifically, the sealing protrusion 4122 is semispherical, including a planar cutting surface and a spherical surface, the planar cutting surface is connected with the end surface of the one end of the exhaust plug 41 towards the elastic member 42, the spherical surface is embedded into the exhaust hole 431 and is in point contact with the exhaust pipe 43, and can complete the opening and closing of the automatic exhaust assembly with the sealing protrusion 4122 as the fulcrum under the cooperation of the elasticity of the elastic member 42, at the same time, the circumferential outer side of the one end of the exhaust pipe 43 towards the spherical surface is provided with a round corner and a limiting angle chamfer, which can guarantee that the exhaust plug 41 can smoothly complete the lever movement for opening and closing to complete the exhaust process with the sealing protrusion 4122 as the fulcrum, further enhancing the efficiency.

[0040] Preferably, the sealing protrusion 4122 can be located at the central position of the one end of the exhaust plug 41 towards the elastic member 42.

[0041] Further, the exhaust plug 41 and the exhaust pipe 43 are provided with a sealing groove 4121 at the one end towards the elastic member 42, which has an angle structure, i.e. the opening end diameter of the sealing groove 4121 is smaller than the bottom end diameter, i.e. the sealing groove 4121 is tapered towards the exhaust plug 41 or the exhaust pipe 43, because the sealing member is embedded in the sealing groove 4121, this tapered structure can better prevent the sealing member from falling off, which can increase the service life of the device, and the two ends of the sealing member along the axis direction of the automatic exhaust assembly are in interference fit abutment with the exhaust plug 41 and the exhaust pipe 43 respectively, which can further enhance the sealing performance to avoid water leakage;

[0042] Further, the outer periphery of the part of the exhaust pipe 43 not sleeved by the elastic member 42 is provided with a second sealing groove, which is embedded with a sealing member, which is in interference fit connection with the inner wall of the air duct 12, enhancing the sealing performance between the automatic exhaust assembly and the air duct 12 to prevent water leakage;

[0043] Specifically, the valve cover 2 is provided with a suspension groove 21 in the center for cooperating with the suspension member 3, the suspension member 3 includes a suspension body 31 and a suspension connecting rod 32, one end of the suspension connecting rod 32 is connected to the top end of the suspension body 31, the other end of the suspension connecting rod 32 extends into the suspension groove 21 and can slide along the suspension groove 21, which can realize the heaving movement of the suspension body 31 under water pressure fluctuation.

[0044] Further, the suspension connecting rod 32 is provided with a suspension through hole 321 along the axial direction of the automatic exhaust assembly, which extends along the length direction of the suspension connecting rod 32.

[0045] Further, the exhaust plug 41 is arranged to pass through the suspension through hole 321 and has a certain movement space in the suspension through hole 321, so as to prevent the hole wall of the suspension through hole 321 from touching the exhaust plug 41 and causing water leakage.

[0046] Preferably, the exhaust plug 41 is arranged at the center of the suspension through hole 321, but is not limited thereto. The fluctuation of the suspension body 31 can drive the opening and closing of the exhaust plug 41, so as to realize the exhaust process.

[0047] Further, the exhaust plug 41 comprises a plug head 411 and a plug body 412. The plug head 411 is arranged at the end of the exhaust plug 41 away from the exhaust pipe 43. The outer diameter of the plug head 411 is smaller than that of the plug body 412. The plug head 411 passes through the suspension through hole 321. The outer diameter of the plug head 411 is smaller than the hole diameter of the suspension through hole 321 and is arranged at the center of the suspension through hole 321, but is not limited thereto. Since the cavity of the valve body 1 is filled with water flow, sometimes water pressure fluctuation will cause the suspension body 31 to make slight fluctuation. In order to avoid the influence of the slight fluctuation on the plug head 411 and cause water leakage, the hole diameter of the suspension through hole 321 is greater than the outer diameter of the plug head 411, so as to leave a certain movement space for the plug head 411 and avoid water leakage as much as possible.

[0048] Specifically, the suspension body 31 is provided with a limiting groove 311 along the axial direction on the circumferential outer side. The inner wall of the cavity of the valve body 1 is provided with a limiting protrusion 13 matched with the limiting groove 311. The limiting protrusion 13 is embedded in the limiting groove 311 and can slide along the limiting groove 311. In this way, the fluctuation of the suspension body 31 in other directions can be prevented, so as to avoid the influence of the hole wall of the suspension through hole 321 on the opening and closing of the exhaust plug 41 and cause water leakage.

[0049] Specifically, the suspension body 31 and the inner wall of the cavity of the valve body 1 are further provided with a water flow gap. The water flow from the drainage pipeline enters the cavity of the valve body 1 through the drainage hole 11 and fills the entire valve body 1 through the water flow gap.

[0050] Specifically, the automatic exhaust valve further comprises a breather valve cap 5 located at the outer periphery of the breather pipe 12 and non-detachably connected with the valve body 1, and the outer periphery of the breather valve cap 5 is further provided with a breather hole 51 through which the gas in the cavity of the valve body 1 is finally exhausted out of the valve, so that the breather valve cap 5 can be used to block the exhaust pipe 43 to complete the sealing, and can also be slightly loosened to expose the breather hole 51 for exhaust when exhaust is needed.

[0051] Specifically, the exhaust pipe 43 is provided with a second exhaust hole at one end away from the elastic member 42 along the axial direction of the exhaust pipe 43, the diameter of the second exhaust hole is larger than that of the exhaust hole 431, and the exhaust hole 431 and the second exhaust hole are in communication with each other; further, the inner wall of the second exhaust hole is circumferentially provided with a first buckle, which is used to prevent the breather valve cap 5 from falling off, and specifically, the breather valve cap 5 is provided with a protrusion matched with the second exhaust hole, and the protrusion is provided with a second buckle matched with the first buckle, and the two can be matched with each other to achieve the non-detachable connection of the breather valve cap 5 and the breather pipe 12.

[0052] Optionally, the valve cover 2 is provided with an electric control assembly at one end away from the valve body 1, and the electric control assembly is provided with a sensing device, preferably a Hall element but not limited thereto, and the Hall element is located at the center of the valve cover 2 and coaxially arranged with the suspension connecting rod 32, and the top end of the suspension connecting rod 32 is provided with a magnet, and the Hall element can sense the strength of the magnetic field of the magnet and further can sense whether the valve body 1 needs to exhaust, and there are two color indicator lights respectively representing the two states of whether the valve body 1 needs to exhaust and does not need to exhaust:

[0053] When there is gas in the cavity of the valve body 1, the water flow in the cavity is reduced, the water flow surface is lowered, and the suspension body 31 is lowered together with the water flow surface, at this time the suspension connecting rod 32 will vertically slide downward for a distance along the suspension groove 21, the distance between the Hall element located at the center of the valve rod 2 and the magnet is lengthened, the magnetic field signal can be sensed to be weakened, indicating that the suspension connecting rod vertically slides downward, and the cavity of the valve body 1 has gas to be exhausted, and then the corresponding color indicator light will light up to give the relevant personnel feedback in the first time; after the gas in the cavity of the valve body 1 is exhausted, the water capacity will increase, the water flow surface in the cavity will rise, and the suspension body 31 will move upward together with the rising of the water flow surface to complete the reset, at this time the suspension connecting rod 32 is reset, the distance between the Hall element and the magnet is pulled in, and the magnetic field signal can be sensed to be enhanced again, indicating that the gas in the cavity of the valve body 1 has been exhausted, and then the corresponding color indicator light will light up to give the relevant personnel feedback in the first time.

[0054] Specifically, a sealing member is arranged between the electric control assembly and the valve cover 2, and is connected with the two by interference fit to achieve sealing effect, so as to avoid damage of the device caused by water entering the electric control assembly.

[0055] Working principle: The automatic exhaust valve is installed on the water pipe. The water flow enters the cavity of the valve body 1 through the drainage hole 11. In the absence of gas, the water flow fills the entire cavity. At this time, the suspended body 31 in the cavity of the valve body 1 moves upward together with the rising water flow. At the same time, the exhaust plug 41 and the exhaust pipe 43 in the automatic exhaust assembly are tightly sealed under the action of the elastic member 42, and no water leakage occurs. When there is gas in the cavity of the valve body 1, the water flow decreases, and the water flow surface drops. The suspended body 31 drops together with the water flow surface. At this time, as the suspended body 31 moves downward, the upper wall of the suspended hole 321 exerts a vertical downward force on the plug head 411 of the exhaust plug 41. This force 100 is greater than the elastic force of the elastic member 42 on the exhaust plug 41. Thus, the elastic member 42 deforms, and the exhaust plug 41 tilts downward with the sealing protrusion 4122 at the center of the plug body 412 as the fulcrum. At this time, the exhaust plug 41 appears a gap at the end of the exhaust pipe 43, and the gas in the cavity of the valve body 1 enters the exhaust pipe 43 from the gap and is discharged through the air hole 51 on the air valve cap 5. After the gas is discharged, more water flow enters the valve body 1, the water flow surface in the cavity rises, and the suspended body 31 moves upward together with the rising water flow surface. The exhaust plug 41 is no longer subjected to the force from the suspended body 31. Under the action of the elastic member 42, the exhaust plug 41 is reset with the sealing protrusion 4122 at the center of the plug body 412 as the fulcrum. The exhaust plug 41 and the exhaust pipe 43 are tightly sealed again, thereby completing the entire exhaust process.

[0056] The specific embodiments of the present application are described in detail above. For those skilled in the technical field, without departing from the principles of the present application, some improvements and modifications can be made to the present application. These improvements and modifications also belong to the protection scope of the claims of the present application.

Claims

1. An automatic exhaust valve, comprising a valve body (1), a valve cover (2), an automatic exhaust assembly and a suspension member (3), one end of the valve body (1) is connected with a water pipe through a flow guide hole (11), the other end is sealingly connected with the valve cover (2), the outer periphery of the valve body (1) is connected with the automatic exhaust assembly through a ventilation pipeline (12), and the suspension member (3) is located in a cavity of the valve body (1) and connected with the automatic exhaust assembly, characterized in that: the automatic exhaust assembly comprises an exhaust plug (41), an elastic member (42) and an exhaust pipe (43) connected in sequence along the axial direction thereof, the elastic member (42) is sleeved on the exhaust plug (41) and the exhaust pipe (43), and the exhaust plug (41) is located at one end of the automatic exhaust assembly extending into the ventilation pipeline (12); any one of the exhaust plug (41) and the exhaust pipe (43) is provided with a sealing groove (4121) at one end facing the elastic member (42), a sealing member is embedded in the sealing groove (4121), and the two ends of the sealing member along the axial direction of the automatic exhaust assembly are in abutment with the exhaust plug (41) and the exhaust pipe (43) in interference fit, respectively; the exhaust plug (41) is provided with a sealing protrusion (4122) at one end facing the elastic member (42), and the sealing protrusion (4122) is embedded into an exhaust through hole (431) of the exhaust pipe (43) at one end facing the exhaust pipe (43).

2. The automatic exhaust valve according to claim 1, characterized in that: the sealing groove (4121) has an angle structure, that is, the opening end diameter of the sealing groove (4121) is smaller than the bottom end diameter, that is, the sealing groove (4121) has a conical structure; the sealing protrusion (4122) is hemispherical, including a planar cutting surface and a spherical surface, the planar cutting surface is connected with the sealing groove (4121), the spherical surface is embedded into the exhaust through hole (431) and is in point contact with the exhaust pipe (43), and the circumferential outer side of one end of the exhaust pipe (43) facing the spherical surface has a round corner and a chamfer with a limiting angle.

3. The automatic exhaust valve according to claim 2, characterized in that: the sealing protrusion (4122) is located at the central position of one end of the exhaust plug (41) facing the elastic member (42).

4. The automatic exhaust valve according to claim 1, characterized in that: the valve cover (2) is provided with a suspension groove (21) in the center for matching the suspension member (3), the suspension member (3) comprises a suspension body (31) and a suspension connecting rod (32), the suspension connecting rod (32) is connected to the top end of the suspension body (31), and the other end of the suspension connecting rod (32) extends into the suspension groove (21) and can slide along the suspension groove (21).

5. The automatic exhaust valve according to claim 4, characterized in that: ​ ​ ​ ​ ​ ​ ​ The suspension connecting rod (32) is provided with a suspension through hole (321) in the axial direction of the automatic exhaust assembly, and the suspension through hole (321) extends along the length direction of the suspension connecting rod (32); The exhaust plug (41) passes through the suspension through hole (321) and is movable in the suspension through hole (321) at the end away from the elastic member (42).

6. The automatic exhaust valve according to claim 5, characterized in that: The exhaust plug (41) comprises a plug head (411) and a plug body (412), the plug head (411) is located at the end of the exhaust plug (41) away from the exhaust pipe (43), the outer diameter of the plug head (411) is smaller than the outer diameter of the plug body (412), the plug head (411) passes through the suspension through hole (321), and the outer diameter of the plug head (411) is smaller than the hole diameter of the suspension through hole (321).

7. The automatic exhaust valve according to claim 6, characterized in that: The plug body (412) is provided with external threads, and the plug body (412) is screw-connected with the elastic member (42) through the external threads.

8. The automatic exhaust valve according to claim 5, characterized in that: The suspension body (31) is provided with a limiting groove (311) in the axial direction on the outer side in the circumferential direction, the cavity inner wall of the valve body (1) is provided with a limiting protrusion (13) matched with the limiting groove (311), and the limiting protrusion (13) is embedded in the limiting groove (311) and is in sliding connection with the limiting groove (311).

9. The automatic exhaust valve according to claim 1, characterized in that: The automatic exhaust valve further comprises an air vent valve cap (5), and the air vent valve cap (5) is located on the outer periphery of the air vent pipeline (12) and is in non-detachable connection with the valve body (1).

10. The automatic exhaust valve according to claim 9, characterized in that: The exhaust pipe (43) is provided with a second exhaust through hole in the axial direction of the exhaust pipe (43) at the end away from the elastic member (42), the exhaust through hole (431) and the second exhaust through hole are in communication with each other, the first buckle is arranged on the hole diameter inner wall in the circumferential direction of the second exhaust through hole, the air vent valve cap (5) is provided with a protrusion matched with the second exhaust through hole, and the second buckle matched with the first buckle is arranged on the protrusion.

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