CN221170988U - Vacuum breaking valve - Google Patents

Abstract

The utility model discloses a vacuum breaking valve, which relates to the field of valves and comprises a valve body and a valve seat, wherein an upper end opening and a lower end opening are respectively arranged at two ends of the valve body, the upper end opening is communicated with the lower end opening, a flow guide chamber with an upper opening is arranged in the valve body, the valve seat is arranged above the flow guide chamber, a valve ball is arranged in the flow guide chamber, and when water in the valve body is contacted with the valve ball, the valve ball can move upwards along the flow guide chamber by utilizing the buoyancy of the water until a sealing surface of the valve ball closes the valve seat; the inner diameter of the diversion chamber is smaller than that of the valve body, and the diversion chamber is connected with the inner wall of the valve body through a first rib plate; through holes are formed in the wall of the diversion chamber. Through setting up the valve ball in the water conservancy diversion is indoor, utilize the guide effect of water conservancy diversion room, when guaranteeing that the valve ball is receiving the buoyancy upward movement sealed face of water to close the disk seat, the edge of sealed face can laminate with the disk seat all the time, realizes sealed effect, realizes spacing to the valve ball motion track to reach the valve ball and to the purpose of valve body control stability.

Description

Vacuum breaking valve

Technical Field

The utility model relates to the field of valves, in particular to a vacuum breaking valve.

Background

A check valve (CHECK VALVE), also known as a non-return valve, a check valve, or a reverse valve, is a type of valve used to control the direction of fluid flow in a conduit. Its primary function is to allow free flow of fluid in one direction while preventing or restricting flow in the opposite direction. Check valves are commonly used to prevent backflow of fluid, to maintain pressure in the system, or to prevent backflow of liquid into critical equipment to ensure proper operation of the system. The principle is that a check valve allows fluid flow in only one particular direction, typically from the inlet to the outlet. When fluid attempts to flow in the reverse direction, the valve will close or restrict flow, preventing backflow. Isolation pump or compressor: check valves are typically installed at the outlet of the pump or compressor to prevent backflow of fluid, damaging the equipment. The application scene comprises that in the sewage disposal system, the check valve is used for preventing sewage from flowing back to the sewage treatment equipment or the urban water supply system; in the chemical, oil and gas industries, check valves are used to prevent backflow of liquids or gases into a piping system, thereby maintaining the integrity of the system; in hydraulic engineering and water supply systems, check valves can help prevent water hammer problems caused by rapid valve closure.

There are many different types of check valves, including Ball check valves, rotary check valves, sanitary grade check valves, insert check valves, etc., each having features to accommodate different fluids and applications, with Ball check valves (Ball CHECK VALVE) being a common type of check valve, the design of which is based on a Ball valve body. Such valves are commonly used in piping systems to allow free flow of fluid in one direction and to prevent or restrict flow in the opposite direction. Ball check valves are known as ball valve bodies, which are free to rotate or move under the force of fluid pressure to allow fluid to pass through while closing in the reverse direction to prevent backflow. However, the movement of the ball in the existing ball valve body is unstable, which results in unstable use of the valve body.

In view of this, the present application has been made.

Disclosure of utility model

The utility model aims to provide a vacuum breaking valve, which is characterized in that a valve ball is arranged in a diversion chamber, and the limit of the movement track of the valve ball is realized by utilizing the guiding function of the diversion chamber, so that the problem of unstable control of a valve body caused by unstable movement track of the valve ball in the prior art is solved.

The embodiment of the utility model is realized by the following technical scheme: the vacuum breaking valve comprises a valve body and a valve seat, wherein an upper end opening and a lower end opening are respectively arranged at two ends of the valve body, the upper end opening is communicated with the lower end opening, a flow guide chamber with an upper opening is arranged in the valve body, the valve seat is arranged above the flow guide chamber, a valve ball is arranged in the flow guide chamber, and when water in the valve body contacts with the valve ball, the valve ball can move upwards along the flow guide chamber by utilizing the buoyancy of the water until a sealing surface of the valve ball closes the valve seat;

The inner diameter of the diversion chamber is smaller than that of the valve body, and the diversion chamber is connected with the inner wall of the valve body through a first rib plate;

Through holes are formed in the wall of the diversion chamber.

Preferably, the bottom of the diversion chamber is provided with a guide hole, a guide rod penetrates through the guide hole, the guide rod is fixedly connected with the valve ball, and the guide rod is perpendicular to the sealing surface of the valve ball.

Preferably, a guide mechanism is arranged in the valve cavity with the upper end opening of the valve seat and the valve body, the guide mechanism is connected with the inner wall of the valve body through a second rib plate, and the guide rod can move in the guide mechanism;

the length of the guide rod is longer than the distance from the guide hole to the guide mechanism.

Preferably, the bottom of the side face of the valve body is provided with a detection liquid inlet, and the detection liquid inlet is provided with a plug.

Preferably, the axial height of the valve ball is greater than the vertical distance from the top of the flow guiding chamber to the valve seat and less than the vertical distance from the bottom of the flow guiding chamber to the valve seat.

Preferably, the bottom of the valve ball is a downwardly convex cambered surface structure.

Preferably, the guide rod is connected with the lowest part of the cambered surface, and the lowest part is perpendicular to the sealing surface with the straight line where the gravity center of the valve ball is located.

Preferably, a seat ring is provided on the top wall of the guide hole.

Preferably, the seat ring is made of an elastic material.

Preferably, the through hole is provided at the bottom of the side wall of the guide chamber.

Compared with the prior art, the embodiment of the utility model has the following advantages and beneficial effects:

1. According to the vacuum breaking valve provided by the embodiment of the utility model, the motion track of the valve ball is limited through the diversion chamber, so that the edge of the sealing surface can be always attached to the valve seat when the valve ball moves upwards to close the valve seat under the buoyancy of water, the sealing effect is realized, and the valve ball can fall back into the diversion chamber under the guiding action of the diversion chamber when the valve ball moves downwards. Meanwhile, liquid in the flow guide chamber enters through the through hole, so that the floating speed of the valve ball can be controlled, the valve ball sealing surface can float up to be in contact with the valve seat sealing surface to close the valve after most air in the valve is discharged, and no impact is generated. The diversion chamber can separate discharged liquid from the valve ball, so that the valve ball is prevented from being closed in advance by power pushing by a large amount of liquid blowing the valve ball, most of air in the valve is prevented from being closed in advance without discharging the valve, a large amount of air which is not discharged can be reserved in the valve, the floating ball is prevented from being insufficient in buoyancy, and the sealing force between the sealing surface of the floating ball and the sealing surface of the valve seat is insufficient, so that the sealing performance of the valve is poor.

The vacuum breaking valve is commonly used at the top of an outlet pipeline of the water pump, when the water pump is started, the vacuum breaking valve can discharge air in the pipeline, the valve ball is gradually floated by buoyancy and is attached to the valve seat, and the valve is closed; when the pump is stopped, the valve ball moves downwards to open the valve, and outside air flows back to the pump outlet pipeline through the opening at the upper end of the vacuum breaking valve, so that the influence of a vacuum area formed in the pump on the pump is prevented.

2. The guide rod is arranged, so that the valve ball can only vertically move in the limiting limit of the guide rod, the movement track of the valve ball in the valve body is further limited, and the control accuracy of the valve body is improved.

3. The utility model limits the relation between the height of the valve ball and the distance between the guide chamber and the valve seat, and the structure can always keep the valve ball to move in the guide chamber all the time in the moving process, thereby further improving the control accuracy of the valve body.

In general, the embodiment of the utility model provides a vacuum breaking valve, which realizes the limit of the movement track of a valve ball by arranging the valve ball in a diversion chamber and utilizing the guiding function of the diversion chamber so as to achieve the aim of controlling and stabilizing the valve body by the valve ball.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a vacuum breaking valve according to an embodiment of the present utility model.

In the drawings, the reference numerals and corresponding part names:

The device comprises a valve seat 1, an upper end opening 2, a lower end opening 3, a 4-diversion chamber, a 5-valve ball, a 6-first rib plate, a 7-through hole, an 8-guide hole, a 9-guide rod, a 10-guide mechanism, a 11-second rib plate, a 12-detection liquid inlet and a 13-seat ring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1, an embodiment of the present utility model provides a vacuum break valve that is generally vertically mounted in the upper portion of a drain line or vessel. The valve comprises a valve body and a valve seat 1, wherein an upper end opening 2 and a lower end opening 3 are respectively arranged at two ends of the valve body, the upper end opening 2 is communicated with the lower end opening 3, namely, the valve body is a main external part of the valve, and two ports are used for connecting pipelines. The valve seat 1 is made of a wear-resistant material for providing tightness, forming a sealing surface of the valve seat 1. A diversion chamber 3 with an upper opening is arranged in the valve body, the valve seat 1 is arranged above the diversion chamber 3, a valve ball 5 is arranged in the diversion chamber 3, and when water in the valve body contacts with the valve ball 5, the valve ball 5 can move upwards along the diversion chamber 3 by utilizing the buoyancy of the water until the sealing surface of the valve ball 5 closes the valve seat 1; namely, in the embodiment of the utility model, the valve ball 5 is placed in the diversion chamber 3, and the floating movement of the valve ball 5 is used for contacting the valve seat 1 to form a seal. The inner diameter of the diversion chamber 3 is smaller than that of the valve body, and the diversion chamber 3 is connected with the inner wall of the valve body through a first rib plate 6; the first rib plate 6 can enable the diversion chamber 3 to be stably arranged in the valve body to provide diversion effect for the valve ball 5; through holes 7 are formed in the wall of the diversion chamber 3, liquid entering through the lower opening 3 can collide with the outer side wall of the diversion chamber 3 through the through holes 7, then enter the diversion chamber 3 through the through holes 7 and contact with the valve ball 5, and the valve ball 5 moves upwards. Meanwhile, the through holes 7 can limit the speed of liquid entering the diversion chamber 3, the valve ball 5 floats up slowly, and after most air in the valve is discharged, the sealing surface of the valve ball 5 can float up to be contacted with the sealing surface of the valve seat 1 to close the valve.

Similarly, the diversion chamber 3 can separate the discharged liquid from the valve ball 5, so that a large amount of liquid is prevented from blowing the valve ball 5 to enable the valve ball 5 to close the valve in advance by power, most of air in the valve is prevented from being closed in advance without discharging the valve, a large amount of air which is not discharged is prevented from being remained in the valve, the floating ball is prevented from being insufficient in buoyancy, and the sealing force between the sealing surface of the floating ball and the sealing surface of the valve seat 1 is insufficient, so that the sealing performance of the valve is poor.

Specifically, when in use, the upper end opening 2 and the lower end opening 3 are respectively installed on corresponding pipelines or equipment, wherein the upper end opening 2 is at the air inlet side, the lower end opening 3 is at the air inlet or liquid inlet side, the lower end opening 3 is at the air inlet, the valve ball 5 cannot move upwards, the valve is in an open state, and gas is discharged from the upper end opening 2. When the liquid enters the valve body through the lower opening 3, the liquid can accumulate in the valve body and enter the diversion chamber 3 through the through hole 7 to be contacted with the valve ball 5, at the moment, the liquid can generate upward buoyancy to the valve ball 5, the liquid can also continuously accumulate, the liquid level rises to drive the valve ball 5 to move upwards, when the sealing surface at the upper part of the valve ball 5 is contacted with the sealing surface of the valve seat 1, the valve ball 5 closes the valve body, even if the liquid level of the liquid continuously rises, the valve ball 5 can not continuously rise, and extrusion force is generated between the valve ball and the valve seat 1, so that a stable sealing effect is achieved; when the liquid in the valve body is discharged, the liquid level in the valve body can drop, the liquid in the diversion chamber 3 can be discharged through the through hole 7, the valve ball 5 moves downwards at the moment, the valve is opened, the gas of the upper end opening 2 enters the lower end opening 3, and the valve body or the equipment is prevented from being damaged due to low pressure in the inner cavity of the valve body or the inner cavity of the equipment connected with the valve body.

In the embodiment of the utility model, the valve ball 5 is arranged in the diversion chamber 3, and the movement rule of the valve ball 5 in the valve cavity can be limited to be unstable under the guidance of the diversion chamber 3, so that the sealing effect is affected. Preferably, the axial height of the valve ball 5 can be set to be larger than the vertical distance from the top of the diversion chamber 3 to the valve seat 1 and smaller than the vertical distance from the bottom of the diversion chamber 3 to the valve seat 1, so that the valve ball 5 moves in the cavity range of the diversion chamber 3 no matter upwards or downwards, the valve ball 5 cannot move to the valve cavity outside the diversion chamber 3, the structure more strictly limits the offset of the movement of the valve ball 5 in the horizontal direction, and the tightness of the valve body can be further improved.

In the embodiment of the utility model, besides the limitation of the height of the diversion chamber 3 and the floating ball, a guide rod 9 is also arranged, specifically, a guide hole 8 is arranged at the bottom of the diversion chamber 3, the guide rod 9 penetrates through the guide hole 8, the guide rod 9 is fixedly connected with the valve ball 5, and the guide rod 9 is perpendicular to the sealing surface of the valve ball 5. At this time, the guide rod 9 can only move in the vertical direction under the restriction of the guide hole 8, and by connecting the guide rod 9 and the valve ball 5, the valve ball 5 can be restricted to move only in the vertical direction, so that the sealing performance of the embodiment of the utility model is further improved. As a preferred embodiment of the utility model, a guide mechanism 10 is also arranged in the valve cavity of the valve seat 1 and the upper end opening 2 of the valve body, the guide mechanism 10 is connected with the inner wall of the valve body through a second rib plate 11, the guide rod 9 can move in the guide mechanism 10, and the length of the guide rod 9 is longer than the distance from the guide hole 8 to the guide mechanism 10.

Specifically, the upper portion of the guide rod 9 is limited by the guide mechanism 10, the lower portion is limited by the guide hole 8, the guide rod 9 is limited to move stably in the vertical direction through the combined action of the guide mechanism 10 and the guide hole 8, the structure is more stable than that of the guide rod 9 when only one is limited, the whole guide rod 9 can be ensured to be vertical all the time, the condition of jamming can not occur in the moving process, and when the length of the guide rod 9 is larger than the distance from the guide hole 8 to the guide mechanism 10, the guide rod 9 can be limited by the guide mechanism 10 and the guide hole 8 all the time.

Further, a detection liquid inlet 12 is formed in the bottom of the side face of the valve body, and a plug is arranged on the detection liquid inlet 12. The function of the detection liquid inlet 12 is to detect the sealing performance of the valve, namely when the liquid at the lower part of the valve or the liquid in the container is insufficient, the liquid is injected through the liquid inlet at the side surface of the lower cavity of the valve body, the sealing performance of the floating ball and the valve seat 1 can be detected, and when the detection is not needed, or the valve works, the detection liquid inlet 12 is closed.

Further, the bottom of the valve ball 5 is of a downward convex cambered surface structure, and the cambered surface structure has the characteristics of small bottom and large top, so that not only can the floating ball be ensured to have enough sealing surfaces, but also the space occupation of the floating ball to the valve body can be reduced, and the fluxion of the valve body can be improved.

Further, the guide rod 9 is connected with the lowest part of the cambered surface, and the lowest part is perpendicular to the sealing surface with the straight line where the gravity center of the valve ball 5 is located. This structure can make the floating ball move more smoothly and stably in the vertical direction, can not impose excessive burden on the guide rod 9, and can improve the durability of the guide rod 9. Preferably, the seat ring 13 is arranged on the top wall of the guide hole 8, when no liquid exists in the valve body, the floating ball moves downwards due to the action of gravity and finally contacts with the inner cavity wall at the bottom of the guide chamber 3, and at the moment, the seat ring 13 is arranged, and the valve ball 5 directly contacts with the seat ring 13 and does not directly contact with the inner cavity wall at the bottom of the guide chamber 3. Therefore, the valve ball 5 can be prevented from being impacted with the inner cavity wall at the bottom of the diversion chamber 3, and the protection effect is better because the seat ring 13 is made of elastic materials, so that the valve ball 5 can be protected, and soft contact is formed.

Further, the through hole 7 is arranged at the bottom of the side wall of the diversion chamber 3, so that liquid in the valve cavity can enter the diversion chamber without reaching a higher position, and meanwhile, the through hole 7 is arranged on the side surface and cannot be directly opposite to the water entering direction, and impact is generated. In order to further reduce the impact, the bottom side surface of the diversion chamber 3 can be provided with an inward convex fold line type appearance, the through holes 7 are arranged on the fold line type vertical wall, namely, the transverse wall is not provided with the through holes 7, so that the transverse wall can buffer the impact of the water, and the buffered liquid enters the diversion chamber 3 again through the vertical through holes 7.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and that descriptions of well-known components and processing techniques and procedures are omitted so as not to unnecessarily limit the present utility model.

Claims (10)

1. The utility model provides a vacuum breaking valve, includes valve body and disk seat (1), the both ends of valve body are provided with upper end opening (2) and lower extreme opening (3) respectively, upper end opening (2) with lower extreme opening (3) intercommunication, characterized in that, be provided with upper portion open-ended guide chamber (4) in the valve body, disk seat (1) set up guide chamber (4) top, valve ball (5) have been placed in guide chamber (4), when the internal water of valve with valve ball (5) contact, valve ball (5) can utilize the buoyancy of water to upwards move along guide chamber (4) until the sealed face of valve ball (5) closes disk seat (1);

The inner diameter of the diversion chamber (4) is smaller than that of the valve body, and the diversion chamber (4) is connected with the inner wall of the valve body through a first rib plate (6);

The wall of the diversion chamber (4) is provided with a through hole (7).

2. A vacuum break valve as claimed in claim 1, characterized in that the bottom of the flow guiding chamber (4) is provided with a guiding hole (8), a guiding rod (9) is penetrated in the guiding hole (8), the guiding rod (9) is fixedly connected with the valve ball (5), and the guiding rod (9) is perpendicular to the sealing surface of the valve ball (5).

3. A vacuum breaking valve according to claim 2, characterized in that a guiding mechanism (10) is arranged in the valve cavity of the valve seat (1) and the upper opening (2) of the valve body, the guiding mechanism (10) is connected with the inner wall of the valve body through a second rib plate (11), and the guiding rod (9) can move in the guiding mechanism (10);

The length of the guide rod (9) is longer than the distance from the guide hole (8) to the guide mechanism (10).

4. A vacuum break valve as claimed in claim 1, characterized in that the bottom of the side of the valve body is provided with a detection inlet (12), and that the detection inlet (12) is provided with a plug.

5. A vacuum break valve according to claim 1 characterized in that the axial height of the valve ball (5) is greater than the vertical distance from the top of the guide chamber (4) to the valve seat (1) and less than the vertical distance from the bottom of the guide chamber (4) to the valve seat (1).

6. A vacuum break valve according to claim 2, characterized in that the bottom of the valve ball (5) is a downwardly convex cambered surface structure.

7. A vacuum break valve according to claim 6 characterized in that the guiding rod (9) is connected to the lowest part of the arc surface, which is perpendicular to the sealing surface in relation to the line of the centre of gravity of the valve ball (5).

8. A vacuum break valve according to claim 7 characterized in that a seat ring (13) is provided on the top wall of the pilot hole (8).

9. A vacuum break valve according to claim 8 characterized in that the seat ring (13) is made of an elastic material.

10. A vacuum break valve according to claim 1 characterized in that the through hole (7) is provided in the bottom of the side wall of the guide chamber (4).