Micro exhaust valve

Abstract

The utility model belongs to the field of exhaust valves, and particularly discloses a trace exhaust valve which comprises a valve body, a valve cover, a lever assembly, a floating ball and a valve clack, the valve cover is arranged on the valve body, the lever assembly is arranged in a valve cavity and connected with the valve cover, the valve clack and the floating ball are both connected with the lever assembly, and the floating ball floats upwards to drive the valve clack to ascend through the lever assembly. When the valve clack abuts against the exhaust port of the exhaust valve, the sealing face of the valve clack is automatically corrected to be horizontal so as to block the exhaust port. According to the exhaust valve, after the floating ball floats upwards, the lever assembly drives the valve clack to ascend to block the exhaust port, the sealing face of the valve clack is automatically corrected to be horizontal to block the exhaust port, the sealing effect of the valve clack can be improved, and the beneficial effect of avoiding water leakage of the exhaust valve is achieved.

Description

Technical Field

[0001] This application belongs to the field of exhaust valves, and more specifically, relates to a micro exhaust valve. Background Art

[0002] Water usually contains dissolved air. During the water conveyance process, this air continuously escapes from the water and accumulates at the high points of the pipeline, forming air pockets, which makes water conveyance difficult and reduces the water conveyance capacity of the system. A micro exhaust valve is a specially designed valve, and its main function is to remove the dissolved air in the pipeline system to protect or improve the water conveyance efficiency of the system and save energy.

[0003] In the related art, the micro exhaust valve usually adopts the lever principle. An exhaust port is opened on the valve cover. The lever is arranged inside the valve body. The valve flap is connected to one end of the lever, and a float is connected to the other end of the lever. The gas in the pipeline can be discharged from the exhaust port. When the water in the pipeline enters the valve cavity and makes the float float, the float drives the valve flap through the lever to close the exhaust port. A certain amount of air is stored in the valve cavity. When the gas precipitated from the water increases, the float drops with the water level, and the exhaust port opens to continue exhausting. In an ideal state, after the lever rises, it is in a horizontal position, and the valve flap and the exhaust port are horizontally sealed. However, in actual working conditions, affected by factors such as the rising speed and installation error, etc., it may not be able to reach the horizontal sealing state, resulting in a decrease in the sealing effect and leakage. Summary of the Utility Model

[0004] Aiming at the defects of the prior art, this application provides a micro exhaust valve, aiming to solve the problem that the existing valve flap has a poor sealing effect and is prone to cause leakage of the exhaust valve.

[0005] A micro exhaust valve provided by this application specifically includes a valve body, a valve cover, a lever assembly, a float, and a valve flap. The valve cover is arranged on the valve body. The lever assembly is arranged in the valve cavity and connected to the valve cover. Both the valve flap and the float are connected to the lever assembly. When the float floats, it drives the valve flap to rise through the lever assembly. When the valve flap abuts against the exhaust port of the exhaust valve, the sealing surface of the valve flap is automatically corrected to be horizontal to block the exhaust port.

[0006] Through the above technical solution conceived by this application, compared with the prior art, after the float floats in this application, it drives the valve flap to rise through the lever assembly to block the exhaust port. Due to the influence of the rising speed of the float and the installation error of the lever, the lever may be in an inclined state in practice. When the valve flap abuts against the exhaust port of the exhaust valve, the sealing surface of the valve flap is automatically corrected to be horizontal to block the exhaust port, which can improve the sealing effect of the valve flap and achieve the beneficial effect of avoiding leakage of the exhaust valve.

[0007] As a further preference, the valve flap includes a connecting member and a movable member. The movable member is movably connected to the top of the connecting member. The top of the movable member is a sealing surface, and the movable member can move relative to the connecting member so that the sealing surface can be automatically corrected to a horizontal position.

[0008] By adopting the above technical solution, the connecting member and the movable member form the valve flap, and the movable member can move relative to the connecting member, so that the sealing surface of the valve flap can be automatically corrected after contacting the exhaust port.

[0009] As a further preference, the movable member includes a core member and a jacket. The core member is in spherical movable cooperation with the connecting member, and the jacket covers the outside of the core member and the connecting member.

[0010] By adopting the above technical solution, the jacket connects the core member and the connecting member into a whole, and the core member is in spherical movable cooperation with the connecting member, with higher degrees of freedom, making it easier for the sealing surface to be automatically corrected to a horizontal position.

[0011] As a further preference, the cross-section of the core member is T-shaped.

[0012] By adopting the above technical solution, the contact area between the core member and the connecting member is small, further improving the freedom of movement of the core member.

[0013] As a further preference, an annular groove is formed on the outer peripheral wall of the jacket, and the annular groove is located at the connection between the core member and the connecting member.

[0014] By adopting the above technical solution, the annular groove is located at the connection between the core member and the connecting member, making it easy for the jacket to deform, so that the angle and position of the core member are easy to adjust.

[0015] As a further preference, the lever assembly is a double-link lever.

[0016] By adopting the above technical solution, using a double-link lever can be vertically installed and controlled in a smaller space. At the same time, by applying force through the double-link lever, a larger torque can be obtained.

[0017] As a further preference, the lever assembly includes an upper lever, a lower lever and a connecting rod. One end of both the upper lever and the lower lever is hinged to the valve cover. The other end of the upper lever is connected to the lower lever through the connecting rod, and both the upper lever and the lower lever are hinged to the connecting rod. The connecting member is detachably connected to the upper lever, and the floating ball is hinged to the lower lever.

[0018] By adopting the above technical solution, when the floating ball floats upward, one end of the lower lever is lifted, and the lower lever causes the upper lever to be lifted through the connecting rod, thereby driving the connecting piece and the movable piece to rise. After the sealing surface at the top of the movable piece contacts the exhaust port, automatic correction can be performed to improve the sealing effect.

[0019] As a further preference, an external thread is provided on the outer wall of the connecting piece, a threaded hole is provided on the upper lever, the connecting piece is in threaded connection and adaptation with the threaded hole, and a threaded positioning sleeve is threadedly connected to the connecting piece.

[0020] By adopting the above technical solution, rotating the connecting piece can install itself on the upper lever, the installation is convenient and simple, and its position can be fixed through the threaded positioning sleeve to adjust the height of the valve flap.

[0021] As a further preference, a valve core is provided on the valve cover, and the exhaust port is provided on the valve core.

[0022] By adopting the above technical solution, the exhaust port is provided on the valve core, so that the machining accuracy of the exhaust port is higher.

[0023] As a further preference, a sealing ring is provided between the valve core and the valve cover.

[0024] By adopting the above technical solution, the sealing ring can enhance the sealing performance between the valve core and the valve cover, and avoid water leakage at the gap between the valve core and the valve cover.

[0025] Generally speaking, compared with the prior art by the above technical solution conceived in this application, the following technical advantages are mainly possessed:

[0026] 1. In this application, when the water in the pipeline enters the valve cavity of the exhaust valve, the floating ball floats upward and drives the valve flap to rise through the lever assembly to block the exhaust port. When the valve flap abuts against the exhaust port of the exhaust valve, the movable piece can move relative to the connecting piece, so that after the sealing surface of the valve flap contacts the exhaust port, automatic correction can be performed. The sealing surface of the valve flap is automatically corrected to be horizontal to block the exhaust port, which can improve the sealing effect of the valve flap, is not affected by the inclined state of the lever, and achieves the beneficial effect of avoiding water leakage of the exhaust valve.

[0027] 2. The cross-section of the core component in this application is T-shaped, the contact area with the connecting piece is small, and the core component and the connecting piece are connected into a whole through the sleeve. The core component and the connecting piece are in spherical movable cooperation, with higher degrees of freedom, making it easier for the sealing surface to be automatically corrected to be horizontal.

[0028] 3. In this application, by rotating the connecting piece, it can be installed on the upper lever by itself, the installation is convenient and simple, and its position can be fixed through the threaded positioning sleeve to adjust the height of the valve flap on the upper lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the first state of the micro exhaust valve provided by the embodiment of the present application;

[0030] Figure 2 It is a schematic diagram of the overall structure of the second state of the micro exhaust valve provided by the embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of the overall structure of the valve flap provided by the embodiment of the present application.

[0032] In all the drawings, the same reference numerals are used to represent the same elements or structures, where:

[0033] 1. Valve body; 2. Valve cover; 3. Lever assembly; 31. Upper lever; 311. Screw hole; 32. Lower lever; 33. Connecting rod; 4. Float; 5. Valve flap; 51. Connecting piece; 52. Movable piece; 521. Core component; 522. Sheath; 523. Annular groove; 53. Threaded positioning sleeve; 6. Valve core; 7. Sealing ring. Detailed implementation manners

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the 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.

[0035] Refer to Figure 1 , a micro exhaust valve disclosed in the present application includes a valve body 1, a valve cover 2, a lever assembly 3, a float 4, a valve flap 5, a valve core 6 and a sealing ring 7. A valve cavity is provided inside the valve body 1. The valve cover 2 is connected to the top of the valve body 1 by bolts. A through hole communicating the inside and outside is provided on the valve cover 2. The valve core 6 is installed at the through hole and the bottom of the valve core 6 extends into the valve cavity. An exhaust port is provided in the middle of the valve core 6, which is the exhaust port of the exhaust valve. The sealing ring 7 is arranged between the valve core 6 and the valve cover 2 to improve the sealing performance.

[0036] In this embodiment, the lever assembly 3 is arranged in the valve cavity and connected to the valve cover 2. Both the valve flap 5 and the float 4 are connected to the lever assembly 3. When the water in the pipeline enters the valve cavity and makes the float 4 float, the valve flap 5 is driven to rise through the lever assembly 3. When the valve flap 5 abuts against the exhaust port of the exhaust valve, the sealing surface of the valve flap 5 is automatically corrected to be horizontal to block the exhaust port, thereby improving the sealing effect of the valve flap 5 on the exhaust port.

[0037] Specifically, the lever assembly 3 in this application is a double-link lever, which can be vertically installed and controlled in a relatively small space. At the same time, by applying force through the double-link lever, a relatively large torque can be obtained. When the float ball 4 rises, the force between the valve flap 5 and the exhaust port is relatively large, so that the sealing surface can be automatically corrected to the horizontal, and the exhaust port can be better blocked. The lever assembly 3 includes an upper lever 31, a lower lever 32, and a connecting rod 33. One end of the upper lever 31 is hinged to one end of the bottom of the valve cover 2 through a pin. One end of the lower lever 32 is hinged to the other end of the bottom of the valve cover 2 through a pin. The other end of the upper lever 31 is connected to the middle of the lower lever 32 through the connecting rod 33, and both the upper lever 31 and the lower lever 32 are hinged to the connecting rod 33. The valve flap 5 is detachably connected to the upper lever 31. The float ball 4 is hinged to the other end of the lower lever 32. When the float ball 4 floats upward, one end of the lower lever 32 is lifted. The lower lever 32 causes the upper lever 31 to be lifted through the connecting rod 33, thereby driving the valve flap 5 to rise to block the exhaust port.

[0038] More specifically, the valve flap 5 includes a connecting member 51 and a movable member 52. The connecting member 51 is detachably connected to the upper lever 31. In this embodiment, the outer wall of the connecting member 51 is provided with an external thread, and a threaded hole 311 is provided on the upper lever 31. The connecting member 51 is threadedly connected and adapted to the threaded hole 311. A threaded positioning sleeve 53 is threadedly connected to the connecting member 51. By rotating the connecting member 51, it can be installed in the threaded hole 311, and its position is fixed by the threaded positioning sleeve 53. The movable member 52 is movably connected to the top of the connecting member 51. The top of the movable member 52 is a sealing surface, which is the sealing surface of the valve flap 5. When the upper lever 31 is lifted and the movable member 52 contacts the exhaust port, the movable member 52 can move relative to the connecting member 51 to automatically correct the sealing surface to the horizontal, and the sealing surface seals the exhaust port horizontally, with a better sealing effect.

[0039] Furthermore, to facilitate the movement of the movable member 52 relative to the connecting member 51 so that the sealing surface can be automatically corrected to a horizontal position, the movable member 52 includes a core member 521 and a sheath 522. The top of the core member 521 is in spherical movable cooperation with the top of the connecting member 51. The cross-section of the core member 521 is in a T shape. The bottom of the core member 521 is spherical. A spherical groove adapted to the bottom of the core member 521 is formed at the top of the connecting member 51. Due to the spherical sliding, the core member 521 is in an adjustable state. Affected by the point-plane pressure factor, the spherical sliding automatically adjusts to correct the sealing surface. The sheath 522 covers the outside of the core member 521 and the connecting member 51, so that the core member 521 and the connecting member 51 are connected as a whole. The sheath 522 is integrally vulcanized from rubber, which can provide a supporting force for the core member 521 and also provide an elastic force for the core member 521 to return to its original position. An annular groove 523 is formed on the outer peripheral wall of the sheath 522. The annular groove 523 is located at the connection between the core member 521 and the connecting member 51, making it easy for the sheath 522 to deform, and thus it is easy to adjust the angle and position of the core member 521.

[0040] In this application, after the floating ball 4 floats up, it drives the valve flap 5 to rise through the lever assembly 3 to block the exhaust port. Due to the influence of the rising speed of the floating ball 4 and the installation error of the lever, the lever may be in an inclined state in practice. The sealing surface of the valve flap 5 is automatically corrected to a horizontal position to block the exhaust port, which can improve the sealing effect of the valve flap 5, is not affected by the inclined state of the lever, and avoids water leakage of the exhaust valve.

[0041] It should be understood that expressions such as "including" and "may include" used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit the existence of one or more additional functions, operations, and constituent elements. In this application, terms such as "including" and / or "having" can be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or a combination thereof, but cannot be interpreted as excluding the existence or the possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or a combination thereof.

[0042] It should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this 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 cannot be understood as a limitation to this application.

[0043] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0044] In the present application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] It is easy for those skilled in the art to understand that the above are only 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 within the protection scope of the present application.

Claims

1. A micro exhaust valve, characterized in that, It includes a valve body (1), a valve cover (2), a lever assembly (3), a floating ball (4) and a valve flap (5). The valve cover (2) is arranged on the valve body (1). The lever assembly (3) is arranged in the valve cavity and connected to the valve cover (2). Both the valve flap (5) and the floating ball (4) are connected to the lever assembly (3). When the floating ball (4) floats upward, it drives the valve flap (5) to rise through the lever assembly (3). When the valve flap (5) abuts against the exhaust port of the exhaust valve, the sealing surface of the valve flap (5) is automatically corrected to be horizontal to block the exhaust port.

2. The micro exhaust valve according to claim 1, characterized in that, The valve flap (5) includes a connecting member (51) and a movable member (52). The movable member (52) is movably connected to the top of the connecting member (51). The top of the movable member (52) is the sealing surface, and the movable member (52) can move relative to the connecting member (51) to automatically correct the sealing surface to be horizontal.

3. The micro exhaust valve according to claim 2, characterized in that, The movable member (52) includes a core body component (521) and a sheath (522). The core body component (521) is in spherical movable cooperation with the connecting member (51). The sheath (522) covers the outside of the core body component (521) and the connecting member (51).

4. The micro exhaust valve according to claim 3, wherein, The cross-section of the core body component (521) is T-shaped.

5. The micro exhaust valve according to claim 4, characterized in that, An annular groove (523) is formed on the outer peripheral wall of the sheath (522). The annular groove (523) is located at the connection between the core body component (521) and the connecting member (51).

6. The micro exhaust valve according to claim 2, characterized in that, The lever assembly (3) is a double-link lever.

7. The micro exhaust valve according to claim 6, characterized in that, The lever assembly (3) includes an upper lever (31), a lower lever (32) and a connecting rod (33). One end of both the upper lever (31) and the lower lever (32) is hinged to the valve cover (2). The other end of the upper lever (31) is connected to the lower lever (32) through the connecting rod (33), and both the upper lever (31) and the lower lever (32) are hinged to the connecting rod (33). The connecting member (51) is detachably connected to the upper lever (31), and the floating ball (4) is hinged to the lower lever (32).

8. A kind of micro exhaust valve according to claim 7, characterized in that, External threads are formed on the outer wall of the connecting member (51). A screw hole (311) is formed on the upper lever (31). The connecting member (51) is threadedly connected and adapted to the screw hole (311). A threaded positioning sleeve (53) is threadedly connected to the connecting member (51).

9. A kind of micro exhaust valve according to any one of claims 1-8, characterized in that, A valve core (6) is arranged on the valve cover (2), and the exhaust port is formed on the valve core (6).

10. A kind of micro exhaust valve as described in claim 9, characterized in that, A sealing ring (7) is arranged between the valve core (6) and the valve cover (2).

Images