Automatic exhaust valve

Abstract

The utility model discloses an automatic exhaust valve, which comprises a valve body, an upper cover, a buoy and a valve core, the upper cover covers the upper end of the valve body and is hermetically connected with the valve body, the upper cover is fixedly connected with an exhaust pipe, the valve core comprises a movable rod, a fixed rod and a spring, the buoy is positioned in the valve body, and a connecting port is arranged at the upper end of the buoy. According to the automatic exhaust valve, the fixing rod and the upper cover are matched with the annular groove through the double sealing rings, sealing structures are arranged between the valve body and the upper cover and between the exhaust pipe and the exhaust cap, and liquid leakage is effectively prevented. Liquid is pressed out of the valve body through gas in the valve body, the buoy moves up and down according to the liquid level condition in the valve body to drive the movable rod to act, and the valve element acts accurately and rapidly. During installation and maintenance, the threaded connection of the fixing rod and the inner hexagonal groove facilitate disassembly and assembly, the spring fixing groove simplifies assembly, and the modular structure reduces the maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of exhaust valve, concretely relates to automatic exhaust valve. BACKGROUND

[0002] In the field of fluid delivery such as energy storage thermal management system, the automatic exhaust valve as a key component to ensure the normal operation of the system undertakes the important function of timely discharging the accumulated gas in the system. The accumulation of gas in the system can cause air blockage in the pipeline, increase the fluid delivery resistance, reduce the system working efficiency, and even cause pipeline vibration, noise and other problems, which seriously affect the stability and service life of the system.

[0003] At present, the common automatic exhaust valve on the market has many deficiencies in structure and performance. The sealing structure design of part of the automatic exhaust valve is unreasonable, which is easy to cause jamming or liquid leakage, resulting in low exhaust efficiency; the linkage structure of the valve core and the float is not accurate enough, so that the valve core cannot be opened or closed in time and accurately according to the water level change, affecting the normal play of the exhaust function. In addition, the existing automatic exhaust valve is inconvenient in assembly and maintenance, and the installation and disassembly of parts are relatively cumbersome, which increases the maintenance cost and time cost. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model adopts the technical scheme of: an automatic exhaust valve, comprising a valve body, an upper cover, a float, and a valve core, the lower end of the valve body is provided with a threaded connection section, the upper cover covers the upper end of the valve body and is sealingly connected with the valve body, the upper cover is fixedly connected with an exhaust pipe, the valve core comprises a movable rod, a fixed rod, and a spring, one end of the fixed rod is fixedly connected with the upper cover, the other end is provided with an air vent, the inside of the fixed rod is provided with an exhaust passage, the exhaust passage is communicated with the exhaust pipe, one end of the movable rod covers the air vent, the other end is fixedly connected with a linkage rod, one end of the spring is tightly sleeved on the fixed rod, the other end is tightly sleeved on the movable rod, the float is located in the inside of the valve body, the upper end of the float is provided with a connecting port, and the movable rod is inserted into the connecting port.

[0005] As a preferred technical scheme of the above, the upper end of the float is fixedly connected with a side guide plate on both sides respectively, the side guide plates are fixedly connected through a pull rod between the upper ends, and the connecting port is formed between the pull rod and the float.

[0006] As a preferred technical scheme of the above, the two sides of the float are respectively provided with air grooves.

[0007] As a preferred technical scheme of the above, one side of the upper cover is provided with a threaded hole communicating the inside of the upper cover, one end of the fixed rod with the air vent is inserted into the inside of the upper cover through the threaded hole, the other end of the fixed rod is screwed with the upper cover through the threaded hole, and one end of the fixed rod located outside the upper cover is provided with an internal hexagonal groove.

[0008] As the preferred technical scheme, the fixed rod is provided with an annular groove and a central groove, both of which are located inside the upper cover, the annular groove is coaxially arranged with the fixed rod, and the two ends of the central groove are communicated with the annular groove, the middle part of the central groove is communicated with the exhaust passage, and the exhaust pipe is communicated with the annular groove.

[0009] As the preferred technical scheme, the fixed rod is provided with an annular groove and a central groove, both of which are located inside the upper cover, the annular groove is coaxially arranged with the fixed rod, and the two ends of the central groove are communicated with the annular groove, the middle part of the central groove is communicated with the exhaust passage, and the exhaust pipe is communicated with the annular groove.

[0010] As the preferred technical scheme, the fixed rod is provided with an annular groove and a central groove, both of which are located inside the upper cover, the annular groove is coaxially arranged with the fixed rod, and the two ends of the central groove are communicated with the annular groove, the middle part of the central groove is communicated with the exhaust passage, and the exhaust pipe is communicated with the annular groove.

[0011] As the preferred technical scheme, the fixed rod is provided with an annular groove and a central groove, both of which are located inside the upper cover, the annular groove is coaxially arranged with the fixed rod, and the two ends of the central groove are communicated with the annular groove, the middle part of the central groove is communicated with the exhaust passage, and the exhaust pipe is communicated with the annular groove.

[0012] As the preferred technical scheme, the fixed rod is provided with an annular groove and a central groove, both of which are located inside the upper cover, the annular groove is coaxially arranged with the fixed rod, and the two ends of the central groove are communicated with the annular groove, the middle part of the central groove is communicated with the exhaust passage, and the exhaust pipe is communicated with the annular groove.

[0013] As the preferred technical scheme, the fixed rod is provided with an annular groove and a central groove, both of which are located inside the upper cover, the annular groove is coaxially arranged with the fixed rod, and the two ends of the central groove are communicated with the annular groove, the middle part of the central groove is communicated with the exhaust passage, and the exhaust pipe is communicated with the annular groove.

[0014] The automatic exhaust valve has the advantages that the fixed rod and the upper cover adopt double sealing rings matched with the annular groove, the valve body and the upper cover and the exhaust pipe and the exhaust cap are also provided with sealing structures, and liquid leakage is effectively prevented. The liquid is pressed out of the valve body by the gas in the valve body, the float moves up and down according to the liquid level in the valve body, drives the movable rod to act, and the valve core acts accurately and quickly. When installation and maintenance are performed, the fixed rod is threadedly connected with the internal hexagonal groove, which facilitates disassembly and assembly, the spring fixing groove simplifies assembly, and the modular structure reduces maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a sectional structure schematic view of the automatic exhaust valve in a non-exhaust state of the utility model;

[0016] Figure 2 is a sectional structure schematic view of the automatic exhaust valve in an exhaust state of the utility model;

[0017] Figure 3 is a three-dimensional structure schematic view of the automatic exhaust valve of the utility model;

[0018] Figure 4 is another angle of the cross-sectional structure of the automatic exhaust valve in the exhaust state. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] As Figures 1-4As shown, the automatic exhaust valve, including valve body 1, upper cover 2, float 3, valve core, the lower end of the valve body 1 is provided with threaded connection section 4, the upper cover 2 covers the upper end of the valve body 1 and is sealingly connected with the valve body 1, the upper cover 2 is fixedly connected with exhaust pipe 5, the valve core includes movable rod 6, fixed rod 7, spring 8, one end of the fixed rod 7 is fixedly connected with the upper cover 2, the other end is provided with air vent 9, the inside of the fixed rod 7 is provided with exhaust passage 10, the exhaust passage 10 communicates with the exhaust pipe 5, one end of the movable rod 6 covers the air vent 9, the other end is fixedly connected with connecting rod 11, one end of the spring 8 is tightly sleeved on the fixed rod 7, the other end is tightly sleeved on the movable rod 6, the float 3 is located in the inside of the valve body 1, the upper end of the float 3 is provided with connecting port 12, the movable rod 6 is inserted into the connecting port 12. The automatic exhaust valve is connected into the pipeline, the liquid in the pipeline enters into the valve body 1, the liquid exerts buoyancy on the float 3, so that the float 3 is kept in a certain height state, the movable rod 6 is not pulled by the float 3. The spring 8 keeps the movable rod 6 in the coaxial state with the fixed rod 7, at this time the air vent 9 is blocked by the fixed rod 7, and no gas is discharged from the exhaust pipe 5 through the exhaust passage 10. When the liquid in the pipeline contains gas, the gas enters into the valve body 1 and then enters into the upper cover 2. When the air pressure in the upper cover 2 reaches a certain pressure, the liquid in the valve body 1 is extruded, so that the liquid level in the valve body 1 is lowered, and then the height of the float 3 is lowered. The float 3 is lowered to pull the movable rod 6 through the connecting rod 11 to overcome the elastic force of the spring 8 to be twisted, so that the air vent 9 is opened. The gas in the exhaust valve is discharged from the exhaust pipe 5 through the exhaust passage 10 from the air vent 9, so as to realize automatic exhaust.

[0023] Further, the upper end of the float 3 is fixedly connected with side guide plates 13 on both sides respectively, the side guide plates 13 are fixedly connected through pull rod 14 between the upper ends, and the connecting port 12 is formed between the float 3 and the pull rod 14. The side guide plates 13 guide the lifting of the float 3.

[0024] Further, the two sides of the float 3 are respectively provided with air grooves 15. The air grooves 15 ensure that the gas in the pipeline can enter into the upper cover 2.

[0025] Further, one side of the upper cover 2 is provided with threaded hole 16 communicating with the inside of the upper cover 2, one end of the fixed rod 7 with the air vent 9 passes through the threaded hole 16 and extends into the inside of the upper cover 2, the other end of the fixed rod 7 is threadedly connected with the upper cover 2 through the threaded hole 16, and the other end of the fixed rod 7 located outside the upper cover 2 is provided with internal hexagonal groove 17. The fixed rod 7 is threadedly connected with the upper cover 2, so as to facilitate the assembly of the valve core and the maintenance of the valve core.

[0026] Further, the fixed rod 7 is provided with an annular groove 18 and a central groove 19, both of which are located inside the upper cover 2. The annular groove 18 is coaxially arranged with the fixed rod 7, and the two ends of the central groove 19 are respectively communicated with the annular groove 18. The middle part of the central groove 19 is communicated with the exhaust passage 10, and the exhaust pipe 5 is communicated with the annular groove 18. The annular groove 18 ensures that the fixed rod 7 can keep the exhaust passage 10 and the exhaust pipe 5 in communication state regardless of the angle, facilitating the assembly of the fixed rod 7.

[0027] Further, the fixed rod 7 is provided with a front sealing ring 20 and a rear sealing ring 21, which are sleeved on the fixed rod 7. The fixed rod 7 is sealingly connected with the upper cover 2 through the front sealing ring 20 and the rear sealing ring 21, and the annular groove 18 is located between the front sealing ring 20 and the rear sealing ring 21. The front sealing ring 20 and the rear sealing ring 21 improve the sealing performance of the connection between the fixed rod 7 and the upper cover 2, ensuring that the gas is discharged from the exhaust pipe 5.

[0028] Further, the fixed rod 7 and the movable rod 6 are respectively provided with spring fixing grooves 22. One end of the spring 8 is sleeved on the fixed rod 7 and clamped in the corresponding spring fixing groove 22, and the other end of the spring 8 is sleeved on the movable rod 6 and clamped in the corresponding spring fixing groove 22. The spring fixing groove 22 prevents the spring 8 from falling off the fixed rod 7 and the movable rod 6.

[0029] Further, the movable rod 6 is fixedly connected with an elastic sealing gasket 23 at one end close to the air inlet 9, which covers the air inlet 9. The elastic sealing gasket 23 improves the sealing performance of the air inlet 9 in the natural state.

[0030] Further, the valve body 1 and the upper cover 2 are buckled, and an upper sealing ring 24 is arranged between the valve body 1 and the upper cover 2. The upper sealing ring 24 improves the sealing performance of the connection between the valve body 1 and the upper cover 2.

[0031] Further, the upper end of the exhaust pipe 5 is threadedly connected with an exhaust cap 25. The upper end of the exhaust cap 25 is provided with an exhaust hole 26 communicating with the inside of the exhaust cap 25. The inside of the exhaust cap 25 is provided with a lower limiting ring 27, and the upper end of the exhaust pipe 5 is provided with an upper limiting ring 28. The inside of the exhaust cap 25 is fixedly connected with a conical plug 29 at the upper end, and the upper end of the exhaust pipe 5 is provided with a conical port 30 for the conical plug 29 to be inserted into. The cooperation of the upper limiting ring 28 and the lower limiting ring 27 makes the exhaust cap 25 not easy to fall off the exhaust pipe 5. By rotating the exhaust cap 25, the conical plug 29 is inserted into the conical port 30, blocking the exhaust pipe 5, and the exhaust function can be closed. By reversing the rotation of the exhaust cap 25, the conical plug 29 is separated from the conical port 30, and the exhaust pipe 5 is communicated with the exhaust hole 26, realizing the exhaust.

[0032] It is worth mentioning that the spring, sealing ring and other technical features involved in the utility model patent application should be regarded as prior art, the specific structure, working principle and possible control mode, spatial arrangement mode of these technical features can be selected by using the conventional selection in the field, and should not be regarded as the invention point of the utility model patent, and the utility model patent will not be further specifically expanded and described in detail.

[0033] The preferred embodiments of the utility model are described in detail above, and it should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model, therefore, all the technical solutions obtained by logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the utility model should be within the protection scope determined by the claims.

Claims

1. Automatic vent valve, characterized in that, The utility model provides a valve body, upper cover, float, valve core, the lower end of valve body is equipped with threaded connection section, upper cover covers the upper end of valve body and is sealedly connected with valve body, upper cover fixedly connects with exhaust pipe, valve core includes movable rod, fixed rod, spring, one end of fixed rod is fixedly connected with upper cover, the other end is equipped with air vent, the inside of fixed rod is equipped with exhaust passage, exhaust passage communicates exhaust pipe, one end of movable rod covers air vent, the other end fixedly connects with linkage rod, one end of spring is tightly sleeved on fixed rod, the other end is tightly sleeved on movable rod, float is located in the inside of valve body, the upper end of float is equipped with connecting port, movable rod inserts connecting port.

2. The automatic vent valve of claim 1, wherein The upper end of the float is fixedly connected with side guide plates on both sides respectively, the side guide plates are fixedly connected through pull rods between the upper ends, and the pull rods form connecting ports with the float.

3. The automatic vent valve of claim 2, wherein Both sides of the float are provided with air grooves.

4. The automatic vent valve of claim 1, wherein One side of the upper cover is provided with a threaded hole communicating the inside of the upper cover, the end of the fixed rod with the air vent passes through the threaded hole and extends into the inside of the upper cover, the other end of the fixed rod is screwed with the upper cover through the threaded hole, and the end of the fixed rod located outside the upper cover is provided with an internal hexagonal groove.

5. The automatic vent valve of claim 4, wherein The fixed rod is provided with an annular groove and a center groove, both the annular groove and the center groove are located in the inside of the upper cover, the annular groove is coaxially arranged on the fixed rod, both ends of the center groove communicate the annular groove, and the middle part of the center groove communicates the exhaust passage, and the exhaust pipe communicates the annular groove.

6. The automatic vent valve of claim 5, wherein The fixed rod is sleeved with front and rear sealing rings, and the fixed rod is sealingly connected with the upper cover through the front and rear sealing rings, and the annular groove is located between the front and rear sealing rings.

7. The automatic vent valve of claim 1, wherein The fixed rod and the movable rod are respectively provided with spring fixing grooves, one end of the spring is sleeved on the fixed rod and clamped in the corresponding spring fixing groove, and the other end of the spring is sleeved on the movable rod and clamped in the corresponding spring fixing groove.

8. The automatic vent valve of claim 7, wherein, One end of the movable rod fixedly connected with an elastic sealing pad close to the air vent covers the air vent.

9. The automatic vent valve of claim 1, wherein The valve body and the upper cover are buckled, and an upper sealing ring is arranged between the valve body and the upper cover.

10. The automatic vent valve of claim 1, wherein The upper end of the exhaust pipe is screwed with an exhaust cap, the upper end of the exhaust cap is provided with an exhaust hole communicating the inside of the exhaust cap, the inside of the exhaust cap is provided with a lower limiting ring, the upper end of the exhaust pipe is provided with an upper limiting ring, the inside of the exhaust cap is fixedly connected with a conical plug, and the upper end of the exhaust pipe is provided with a conical port for the conical plug to be inserted.

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