CN220870170U - Exhaust valve - Google Patents

Abstract

The utility model provides an exhaust valve, and belongs to the technical field of valves. The exhaust valve solves the problem that a large amount of water vapor is brought out when the existing exhaust valve is used for exhausting. The exhaust valve comprises a valve body, wherein the bottom of the valve body is provided with an air inlet end, the top of the valve body is provided with an exhaust part provided with an exhaust hole, a floating ball, an exhaust core and an exhaust spring are arranged in the valve body, the floating ball can move downwards to drive the exhaust core to overcome the elasticity of the exhaust spring and move and enable an inner cavity of the valve body to be communicated with the exhaust hole, the bottom of the exhaust part is recessed upwards to form an exhaust hole communicated with the inner cavity of the valve body, the exhaust hole penetrates through the side wall of the exhaust hole, and a plurality of gaskets made of paper are fixed at the top of the exhaust hole in the exhaust part. The exhaust valve can avoid direct discharge of water vapor.

Description

Exhaust valve

Technical Field

The utility model belongs to the technical field of valves, and relates to an exhaust valve.

Background

The liquid medium is usually conveyed by a pipeline network, and a plurality of valves are connected in the pipeline network to respectively perform operations such as flow regulation, start-stop control and the like.

In heating and cooling systems, water releases a large amount of gas in the network of the system due to the change in water temperature, and the gas escapes upward along the pipes and eventually collects at the highest point of the system. For this situation, one would set an exhaust valve at the highest point of the system to achieve automatic exhaust.

However, the existing exhaust valve can only realize the function of automatically opening and closing the exhaust, and in a heating system, a large amount of water vapor is discharged when the exhaust valve is exhausted, the humidity and the temperature of the surrounding environment are affected, discomfort is caused, even when the temperature of the water vapor is high, the conditions such as scalding are easy to occur, and potential safety hazards exist.

Disclosure of utility model

The utility model aims to solve the problems in the prior art, and provides an exhaust valve which solves the problem that a large amount of water vapor is brought out when the existing exhaust valve is used for exhausting.

The aim of the utility model can be achieved by the following technical scheme:

The exhaust valve comprises a valve body, wherein the bottom of the valve body is provided with an air inlet end, the top of the valve body is provided with an exhaust part provided with an exhaust port, a floating ball, an exhaust core and an exhaust spring are arranged in the valve body, the floating ball can move downwards to drive the exhaust core to overcome the elastic force of the exhaust spring and move and enable an inner cavity of the valve body to be communicated with the exhaust port.

When the exhaust valve is connected in the pipeline system, the exhaust valve is positioned at the top, the air inlet end is positioned at the bottom and communicated with the pipeline, and at the moment, the exhaust valve is positioned at the highest point of the pipeline system. In the liquid medium conveying process, the medium enters the valve body, the floating ball moves upwards under the buoyancy of the liquid medium, and the exhaust core blocks the inner cavity of the valve body and the exhaust port under the elastic force of the exhaust spring, so that no exhaust is performed. When gas is generated in the pipeline system, the gas rises and can gather in the valve body of the exhaust valve, the gas pressure in the valve body is enhanced along with the continuous increase of the gas, the liquid medium is extruded out of the valve body, the floating ball moves downwards to drive the exhaust core to overcome the elastic force of the exhaust spring and move, the inner cavity of the valve body is communicated with the exhaust port, the exhaust is realized, and after the exhaust is finished, the exhaust core, the floating ball and the like recover to an initial state. In the exhausting process, the vapor exhausted upwards along with the gas can be adsorbed by the gasket at the top of the exhaust hole, only the gas is exhausted from the exhaust port, the influence of the vapor exhaust on the environment is avoided, and the potential safety hazard is eliminated.

In the exhaust valve, the outer side of the air inlet end is further connected with a cylindrical connector in a threaded mode, a valve core and a check spring are arranged in the connector, the valve core has a trend of moving upwards and blocking an inner hole of the connector under the elastic action of the check spring, and the lower end of the air inlet end abuts against the upper end of the valve core. The connector is used for connecting the air inlet end with the pipeline, the lower end of the air inlet end pushes the valve core to move downwards and compresses the check spring after the connector is connected with the air inlet end, so that the inner hole of the connector is communicated, and at the moment, the connector is only used as a pipe fitting; otherwise, the valve body is removed, the air inlet end withdraws from the joint, no acting force is applied to the valve core, and the valve core moves upwards and plugs the inner hole of the joint again under the action of the elastic force of the check spring, so that the sealing of the joint can be effectively ensured after the valve body is removed, and the leakage of liquid medium is avoided.

In the exhaust valve, the inner side of the lower end of the connector is provided with a first retaining shoulder protruding inwards to form a circular ring shape, the valve core is barrel-shaped, the closed end downwards penetrates out of the lower end of the connector, gaps are reserved between the outer wall of the valve core and the inner wall of the connector and between the outer wall of the valve core and the inner wall of the first retaining shoulder, a through hole is formed in the lateral portion of the lower end of the valve core in a penetrating mode, the outer side of the upper end of the valve core is provided with a second retaining shoulder protruding inwards to form a circular shape, the outer side of the valve core is sleeved with a check spring, two ends of the check spring are respectively abutted to the first retaining shoulder and the second retaining shoulder, an annular sealing ring is fixed on the outer side of the valve core, the sealing ring is located between the through hole and the lower end of the valve core, and the valve core can move upwards under the elastic action of the check spring, and the sealing ring is abutted to the first retaining shoulder to form sealing. When the valve core is pressed down by the air inlet end, the sealing ring leaves the first blocking shoulder, liquid medium enters the joint from a gap between the valve core and the first blocking shoulder, is sent into the valve body in the air inlet end direction through the gap between the valve core and the inner wall of the joint and the inner hole of the valve core, and when the air inlet end is separated, the valve core moves upwards under the elastic force of the check spring, and the sealing of the inner hole of the butt joint is realized by means of the abutting sealing of the sealing ring and the first blocking shoulder.

In the exhaust valve, the fixed seat is fixed at the inner top of the valve body, the fixed seat is adjacent to the lower port of the exhaust hole, a springboard is arranged between the floating ball and the fixed seat, one end of the springboard is hinged with the fixed seat, the other end of the springboard is movably connected with the floating ball, the upper end of the exhaust core penetrates into the exhaust hole, and the lower end of the exhaust core penetrates through the springboard and can move downwards along with the springboard. The fixed seat is used as a fulcrum, the floating ball can drive the springboard to swing downwards around the fulcrum and drive the exhaust core to downwards move, so that the inner cavity of the valve body is communicated with the exhaust hole.

In the exhaust valve, the lower extreme of exhaust core has outwards to bulge and is annular sealing portion and spacing head, spacing head is located the lower tip of exhaust core, sealing portion is located the top of spacing head and forms the spacing groove between the two, the gangboard go up with the exhaust core position corresponds the department and runs through and set up the hole, the lower extreme of exhaust core passes wear to establish the hole, wear to establish the hole and be greater than the length that the exhaust core is located spacing groove department in the ascending length of floater and fixing base's distribution direction, wear to establish the width of hole and be less than the width of spacing head. The length of the penetrating hole is longer, so that the exhaust core can still be kept in the exhaust hole when the gangboard swings, and the width of the penetrating hole is smaller than that of the limiting head, so that the exhaust core can be driven to move downwards when the gangboard moves downwards.

In the exhaust valve, the lower port of the inner top of the valve body surrounding the exhaust hole is provided with the convex annular sealing seat, the inner side of the sealing seat, which is close to the top surface of the valve body, is provided with the concave annular sealing groove, an O-shaped ring is arranged in the sealing groove, the exhaust core penetrates through the O-shaped ring, and when the exhaust core moves upwards, the sealing part can be abutted against the O-shaped ring and realize sealing. The sealing is achieved by means of the protruding sealing part being moved up against the O-ring.

In the exhaust valve, the outer side of the upper end of the exhaust core is fixedly provided with an annular guide piece, the outer side of the guide piece is provided with a plurality of protruding guide parts which can prop against the hole wall of the exhaust hole, the guide parts are distributed at intervals around the axis of the guide piece, the side wall of the lower port of the exhaust hole is provided with an inwards protruding annular protruding edge, the exhaust spring is sleeved on the outer side of the exhaust core, and two ends of the exhaust spring respectively prop against the upper end of the protruding edge and the lower end face of the guide piece. The guide piece and the convex edge are arranged to radially limit the two ends of the exhaust core, so that the position of the exhaust core is kept, and the smoothness and stability of the movement of the exhaust core are further ensured.

In the exhaust valve, the top in the valve body is also provided with a limiting column protruding downwards to form a column shape, and the fixing seat is correspondingly sleeved on the outer sides of the limiting column and the sealing seat. The fixing seat is limited through the protruding limiting column and the sealing seat, so that the stability is better.

In the exhaust valve, the valve body comprises a main body with an open top and a top cover fixed at the top of the main body, the exhaust part comprises an exhaust seat connected with the top cover into a whole and an exhaust cap connected with the upper side of the exhaust seat in a threaded manner, and the exhaust port is arranged on the exhaust cap. The split exhaust part structure is convenient for replacing the paper gasket in the exhaust cap and closing the exhaust port.

Compared with the prior art, in the exhaust process of the exhaust valve, vapor exhausted upwards along with gas can be adsorbed by the gasket at the top of the exhaust hole, only the gas is exhausted from the exhaust port, the influence of the vapor exhaust on the environment is avoided, and the potential safety hazard is eliminated.

Drawings

Fig. 1 is a schematic sectional view of the structure of the valve body of the present exhaust valve.

Fig. 2 is a schematic cross-sectional view of the joint of the present vent valve.

Fig. 3 is a schematic view of the exhaust cap of the present exhaust valve.

Fig. 4 is a schematic structural view of a springboard of the exhaust valve.

Fig. 5 is a schematic structural view of the fixing seat of the exhaust valve.

In the figure, 1, a valve body; 2. an air inlet end; 3. an exhaust unit; 4. a floating ball; 5. an exhaust core; 6. an exhaust spring; 7. an exhaust hole; 8. an exhaust port; 9. a gasket; 10. a joint; 11. a valve core; 12. a check spring; 13. a first stop shoulder; 14. a through hole; 15. a second shoulder; 16. a seal ring; 17. a fixing seat; 18. a springboard; 19. a sealing part; 20. a positioning head; 21. penetrating holes; 22. a sealing seat; 23. an O-ring; 24. a guide member; 25. a convex edge; 26. a limit column; 27. a top cover; 28. a main body; 29. an exhaust seat; 30. an exhaust cap.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-5, the exhaust valve comprises a valve body 1, wherein a cylindrical air inlet end 2 is arranged at the bottom of the valve body 1, the air inlet end 2 is communicated with the inner cavity of the valve body 1, an exhaust part 3 provided with an exhaust port 8 is arranged at the top of the valve body 1, the bottom of the exhaust part 3 is upwards recessed to form an exhaust hole 7 communicated with the inner cavity of the valve body 1, and the exhaust port 8 penetrates through the side wall of the exhaust hole 7. In this embodiment, the valve body 1 includes a main body 28 with an open top and a top cover 27 fixed on the top of the main body 28, the exhaust part 3 includes an exhaust seat 29 integrally connected with the top cover 27 and an exhaust cap 30 screwed on the upper side of the exhaust seat 29, the exhaust port 8 is opened on the exhaust cap 30, a plurality of gaskets 9 made of paper are fixed on the top of the exhaust hole 7 in the exhaust cap 30, and the plurality of gaskets 9 are horizontally arranged and stacked.

The valve body 1 is internally provided with a floating ball 4, a springboard 18, an exhaust core 5 and an exhaust spring 6, wherein the floating ball 4 is made of a material with density lower than that of water or is in a hollow structure so as to float in or on the water surface. A fixed seat 17 is fixed at the inner top of the valve body 1, one end of a springboard 18 is hinged with the fixed seat 17, and the other end is movably connected with the floating ball 4. The upper end of the air vent core 5 penetrates into the air vent hole 7, and the lower end of the air vent core 5 penetrates through a penetrating hole 21 which is formed in the springboard 18 in a penetrating manner along the vertical direction. In this embodiment, the top center of the valve body 1 is further provided with a limiting post 26 protruding downward to form a cylinder, and the fixing seat 17 is correspondingly sleeved and fixed on the outer sides of the limiting post 26 and the sealing seat 22.

Specifically, the lower end of the exhaust core 5 is provided with a sealing part 19 and a limiting head 20 which are protruded outwards and are all in a circular ring shape, the limiting head 20 is positioned at the lower end part of the exhaust core 5, the sealing part 19 is positioned above the limiting head 20, a limiting groove is formed between the sealing part 19 and the limiting head 20, the position of a penetrating hole 21 on the springboard 18 is opposite to the limiting groove, namely the springboard 18 is sleeved at the limiting groove of the exhaust core 5, the limiting head 20 at the lower end of the exhaust core 5 is positioned below the penetrating hole 21, the length of the penetrating hole 21 in the distribution direction of the floating ball 4 and the fixed seat 17 is greater than the length of the exhaust core 5 at the limiting groove, and the width of the penetrating hole 21 is smaller than the width of the limiting head 20, so that the springboard 18 can pull the exhaust core 5 to move downwards.

The lower port of the top surrounding the exhaust hole 7 in the valve body 1 is provided with a sealing seat 22 protruding in a circular ring shape, the inner side of the sealing seat 22 is provided with a concave circular ring-shaped sealing groove near the top surface of the valve body 1, an O-shaped ring 23 is arranged in the sealing groove, the exhaust core 5 penetrates through the O-shaped ring 23, and when the exhaust core 5 moves upwards, the sealing part 19 on the exhaust core 5 presses the O-shaped ring 23 on the top of the valve body 1, namely the lower side surface of the top cover 27 to realize sealing.

The upper end of the exhaust core 5 is positioned in the exhaust part 3, a circular ring-shaped guide piece 24 is fixed on the outer side of the upper end of the exhaust core 5, a plurality of protruding guide parts which can be propped against the hole wall of the exhaust hole 7 are arranged on the outer side of the guide piece 24, the plurality of guide parts are distributed at intervals around the axis of the guide piece 24, an air passing gap is formed between two adjacent guide parts, a convex edge 25 protruding inwards to form a circular ring shape is arranged on the side wall of the lower port of the exhaust hole 7, an exhaust spring 6 is sleeved on the outer side of the exhaust core 5, and two ends of the exhaust spring 6 respectively prop against the upper end of the convex edge 25 and the lower end face of the guide piece 24.

The exhaust valve further comprises a cylindrical joint 10 which is in threaded connection with the outer side of the air inlet end 2, a cylindrical valve core 11 and a check spring 12 are arranged in the joint 10, the closed end of the valve core 11 downwards penetrates out of the lower end of the joint 10, gaps are reserved between the outer wall of the valve core 11 and the inner wall of the joint 10 and between the outer wall of the valve core 11 and the inner wall of the first retaining shoulder 13, and a through hole 14 is formed in the lateral portion of the lower end of the valve core 11 in a penetrating mode. The inner side of the lower end of the joint 10 is provided with a first blocking shoulder 13 which protrudes inwards to form a circular ring shape, the outer side of the upper end of the valve core 11 is provided with a second blocking shoulder 15 which protrudes outwards to form a circular ring shape, the check spring 12 is sleeved on the outer side of the valve core 11, two ends of the check spring 12 respectively lean against the first blocking shoulder 13 and the second blocking shoulder 15, the outer side of the valve core 11 is also fixedly provided with a circular ring-shaped sealing ring 16, the sealing ring 16 is positioned between the through hole 14 and the lower end part of the valve core 11, and the valve core 11 can move upwards under the elastic force of the check spring 12 and enable the sealing ring 16 to lean against the first blocking shoulder 13 to form sealing.

When the valve body 1 of the exhaust valve and the joint 10 are not assembled, the valve core 11 in the joint 10 moves upwards under the elastic force of the check spring 12 and seals the inner hole of the joint 10 by abutting the sealing ring 16 and the first stop shoulder 13.

During assembly, the air inlet end 2 is screwed in along the threads, so that the lower end of the air inlet end 2 pushes the valve core 11 to move downwards and compresses the check spring 12, the inner hole of the connector 10 is conducted, and at the moment, the connector 10 is only used as a pipe fitting.

After the assembly is completed, the exhaust valve is connected in a pipeline system for use, and the exhaust part 3 is positioned at the highest point in the whole pipeline system.

In the process of conveying the liquid medium, the medium simultaneously enters the valve body 1, the floating ball 4 moves upwards under the buoyancy of the liquid medium, the springboard 18 swings upwards relative to the fixed seat 17, the exhaust core 5 moves upwards under the elastic force of the exhaust spring 6, the sealing is realized by the extrusion fit of the sealing part 19 and the O-shaped ring 23, the inner cavity of the valve body 1 and the exhaust port 8 are blocked, and no exhaust is performed at the moment.

When gas is generated in the pipeline system, the gas rises and can gather in the valve body 1 of the exhaust valve, the gas pressure in the valve body 1 is enhanced along with the continuous increase of the gas, the liquid medium is extruded out of the valve body 1, then the floating ball 4 moves downwards, the air exhaust core 5 is driven by the springboard 18 to overcome the elasticity of the air exhaust spring 6 and move downwards, the sealing part 19 leaves the O-shaped ring 23, the inner cavity of the valve body 1 is communicated with the air exhaust port 8, the exhaust is realized, and after the exhaust is finished, the air exhaust core 5, the floating ball 4 and the like recover to an initial state.

During this venting, water vapor that is vented upward with the gas is adsorbed by the gasket 9 at the top of the vent 7, and only the gas is vented from the vent 8.

When negative pressure is generated in the pipe network system, the water surface in the inner cavity of the valve body 1 is lowered, the exhaust port 8 is opened as well, and because the external atmospheric pressure is higher than the system pressure, the atmosphere can enter the system through the exhaust port 8, so that the harm of the negative pressure is prevented.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (9)

1. The exhaust valve comprises a valve body (1), wherein an air inlet end (2) is arranged at the bottom of the valve body (1), an exhaust part (3) provided with an exhaust hole (8) is arranged at the top of the valve body (1), a floating ball (4), an exhaust core (5) and an exhaust spring (6) are arranged in the valve body (1), the floating ball (4) can move downwards to drive the exhaust core (5) to overcome the elasticity of the exhaust spring (6) and enable the inner cavity of the valve body (1) to be communicated with the exhaust hole (8), and the exhaust valve is characterized in that the bottom of the exhaust part (3) is upwards recessed to form an exhaust hole (7) communicated with the inner cavity of the valve body (1), the exhaust hole (8) is penetrated and arranged at the side wall of the exhaust hole (7), and a plurality of gaskets (9) made of paper are fixed at the top of the exhaust hole (7) in the exhaust part (3).

2. The exhaust valve according to claim 1, characterized in that the outer side of the air inlet end (2) is further connected with a cylindrical connector (10) in a threaded manner, a valve core (11) and a check spring (12) are arranged in the connector (10), the valve core (11) has a tendency of moving upwards and blocking an inner hole of the connector (10) under the action of the elastic force of the check spring (12), and the lower end of the air inlet end (2) abuts against the upper end of the valve core (11).

3. The exhaust valve according to claim 2, characterized in that the inner side of the lower end of the joint (10) is provided with a retaining shoulder I (13) protruding inwards to form a circular ring shape, the valve core (11) is barrel-shaped, the closed end faces downwards and penetrates out of the lower end of the joint (10), gaps are formed between the outer wall of the valve core (11) and the inner wall of the joint (10) and between the outer wall of the valve core (11) and the inner wall of the retaining shoulder I (13), a through hole (14) is formed through the side part of the lower end of the valve core (11), the outer side of the upper end of the valve core (11) is provided with a retaining shoulder II (15) protruding inwards to form a circular ring shape, the check spring (12) is sleeved on the outer side of the valve core (11), two ends of the check spring (12) respectively abut against the retaining shoulder I (13) and the retaining shoulder II (15), an annular sealing ring (16) is further fixed on the outer side of the valve core (11), and the sealing ring (16) is located between the through hole (14) and the lower end of the valve core (11), and the valve core (11) can move under the elasticity of the check spring (12) and enable the retaining shoulder II to abut against the retaining shoulder I (13) to form a sealing seal.

4. A vent valve according to claim 1, 2 or 3, wherein a fixed seat (17) is fixed at the inner top of the valve body (1), the fixed seat (17) is arranged adjacent to the lower port of the vent hole (7), a springboard (18) is arranged between the floating ball (4) and the fixed seat (17), one end of the springboard (18) is hinged with the fixed seat (17), the other end of the springboard is movably connected with the floating ball (4), the upper end of the vent core (5) penetrates into the vent hole (7) and the lower end of the vent core (5) penetrates through the springboard (18) and can move downwards along with the springboard (18).

5. The exhaust valve according to claim 4, wherein the lower end of the exhaust core (5) is provided with an annular sealing part (19) and a limiting head (20) protruding outwards, the limiting head (20) is positioned at the lower end part of the exhaust core (5), the sealing part (19) is positioned above the limiting head (20) and forms a limiting groove between the two, a penetrating hole (21) is formed in the position, corresponding to the exhaust core (5), of the springboard (18) in a penetrating manner, the lower end of the exhaust core (5) penetrates through the penetrating hole (21), the length of the penetrating hole (21) in the distribution direction of the floating ball (4) and the fixing seat (17) is larger than the length of the exhaust core (5) positioned at the limiting groove, and the width of the penetrating hole (21) is smaller than the width of the limiting head (20).

6. The exhaust valve according to claim 5, characterized in that a lower port of the inner top of the valve body (1) surrounding the exhaust hole (7) is provided with a convex annular sealing seat (22), a concave annular sealing groove is formed in the inner side of the sealing seat (22) close to the top surface of the valve body (1), an O-shaped ring (23) is arranged in the sealing groove, the exhaust core (5) passes through the O-shaped ring (23), and when the exhaust core (5) moves upwards, the sealing part (19) can be abutted against the O-shaped ring (23) to realize sealing.

7. The exhaust valve according to claim 4, characterized in that an annular guide piece (24) is fixed on the outer side of the upper end of the exhaust core (5), a plurality of protruding guide parts capable of abutting against the hole wall of the exhaust hole (7) are arranged on the outer side of the guide piece (24), a plurality of guide parts are distributed at intervals around the axis of the guide piece (24), a convex edge (25) protruding inwards and annular is arranged on the side wall of the lower port of the exhaust hole (7), the exhaust spring (6) is sleeved on the outer side of the exhaust core (5), and two ends of the exhaust spring (6) respectively abut against the upper end of the convex edge (25) and the lower end face of the guide piece (24).

8. The exhaust valve according to claim 4, wherein the top in the valve body (1) is further provided with a limiting column (26) protruding downwards to form a column shape, and the fixing seat (17) is correspondingly sleeved on the outer sides of the limiting column (26) and the sealing seat (22).

9. A vent valve according to claim 1, 2 or 3, wherein the valve body (1) comprises a main body (28) with an open top and a top cover (27) fixed on the top of the main body (28), the vent part (3) comprises a vent seat (29) integrally connected with the top cover (27) and a vent cap (30) screwed on the upper side of the vent seat (29), and the vent (8) is opened on the vent cap (30).