A ball valve bonnet assembly

Abstract

The utility model relates to ball valve technical field, and disclose a kind of ball valve bonnet assembly, by valve body, valve cover, valve stem, valve core, through hole and valve seat etc. are constituted, and the inside of valve body is located the downside of valve cover and is equipped with movable cavity, the inner chamber top of movable cavity is fixedly connected with magnetic ring, the inside of valve stem is equipped with air passage, the top of valve stem is fixedly installed with barograph, the outer surface upper portion of valve core is fixedly connected with elastic film, and the top surface of elastic film movably inlays with magnetic ball. The utility model when normal use, since elastic film is fixed on valve core, and using movable cavity inside magnetic ring to adsorb magnetic ball, so that elastic film will separate valve cover and valve stem, can avoid valve cover and valve stem directly with water contact, so as to effectively prevent valve cover and valve stem from being corroded by water, and water pressure received when ball valve is opened can be reduced, so that ball valve can be quickly opened and closed.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve cover assembly. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the valve axis. It can also be used for fluid regulation and control. Among them, the hard-seal V-type ball valve has a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making it particularly suitable for media containing fibers, small solid particles, etc. Multi-port ball valves can not only flexibly control the merging, splitting, and switching of the flow direction of the medium in pipelines, but also close any channel while connecting the other two channels. This type of valve should generally be installed horizontally in pipelines. Ball valves are classified according to the driving method: pneumatic ball valves, electric ball valves, and manual ball valves. Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of the medium. It only requires a 90-degree rotation and a small torque to close tightly. Ball valves are most suitable for use as on / off valves.

[0003] The bonnet is a crucial component of a ball valve, primarily used to cover the valve body opening and form a sealed pressure chamber together with the valve body. It also supports the valve stem and transmission mechanism. Its core functions include supporting the valve stem, transmission mechanism, and mounting the sealing elements to ensure reliable sealing under high pressure. Since the inner wall of the bonnet is directly connected to the inner cavity of the ball valve, and the opening and closing of the ball valve are achieved by rotating the valve stem on the bonnet, the water pressure inside the ball valve increases the difficulty of rotating the valve stem. Furthermore, the bonnet and valve stem are prone to corrosion from prolonged immersion in water, significantly increasing the difficulty of opening and closing the valve. Secondly, the bonnet is mostly opened by rotating a handwheel, while the ball valve's rotation angle is only 90 degrees. Therefore, the handwheel cannot clearly indicate whether the ball valve is open or closed, potentially leading to misjudgment by the operator. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ball valve cover assembly that can isolate the valve cover and valve stem from the water flow, preventing the valve from being affected by water pressure during opening and closing, preventing the valve cover and valve stem from rusting, and facilitating operators to determine whether the valve is open or closed, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a ball valve cover assembly, including a valve body, and further comprising:

[0006] An inlet pipe is fixedly installed on the left side of the valve body, and an outlet pipe is fixedly installed on the right side of the valve body. Both the inlet and outlet pipes have flanges fixedly installed at their ends away from the valve body. A valve cover is threadedly connected to the top of the valve body, and the valve cover includes a valve opening and closing device.

[0007] Preferably, the valve opening and closing device includes:

[0008] The valve stem is rotatably connected to the inside of the valve cover;

[0009] The valve core is fixedly sleeved on the outer surface of the valve stem located in the inner cavity of the valve body;

[0010] A through hole is formed through the valve core.

[0011] Preferably, the valve stem includes:

[0012] The handwheel is fixedly sleeved on the outer surface of the valve stem extending from the valve cover.

[0013] The valve seat is fixedly connected to the side wall of the valve body cavity near the outlet pipe.

[0014] Preferably, the outer surface of the valve core is in contact with the side wall of the valve seat, and the valve seat has a water flow hole that is connected to the water outlet pipe.

[0015] Preferably, the valve body further includes:

[0016] The movable cavity is formed inside the valve body and located on the lower side of the valve cover;

[0017] A magnetic ring is fixedly connected to the top of the inner cavity of the movable cavity.

[0018] Preferably, the valve stem includes:

[0019] A vent groove is formed inside the valve stem;

[0020] A pressure gauge is fixedly connected to the top of the valve stem, and the vent slot is connected to the input end of the pressure gauge.

[0021] Preferably, the valve core includes:

[0022] An elastic diaphragm is fixedly connected to the upper part of the outer surface of the valve core;

[0023] Magnetic balls are movably embedded in the top surface of the elastic membrane, and the lower opening of the vent groove is located inside the elastic membrane.

[0024] Preferably, the top of the elastic membrane extends into the movable cavity, and the magnetic properties of the magnetic ball are opposite to those of the magnetic ring, with the magnetic ball and the magnetic ring in active contact.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This utility model, through the design of an elastic membrane, magnetic balls, a movable cavity, and a magnetic ring, ensures that when the ball valve is in normal use, the elastic membrane is fixed on the valve core, and the magnetic balls are attracted by the magnetic ring in the movable cavity. This allows the elastic membrane to separate the valve cover from the valve stem, preventing the valve cover and valve stem from direct contact with water. This effectively prevents the valve cover and valve stem from water corrosion and reduces the impact of water pressure when the ball valve is opened, allowing the ball valve to open and close quickly.

[0027] 2. This utility model, through the design of an elastic diaphragm, a venting groove, and a pressure gauge, allows the ball valve to operate smoothly. When the ball valve is open, water is discharged through the through-hole, reducing the water pressure outside the valve core. This weakens the pressure exerted on the elastic diaphragm, resulting in a decrease in air pressure inside the diaphragm and a lower reading on the pressure gauge. When the ball valve is closed, water flow ceases through the through-hole, increasing the water pressure outside the valve core. This increases the air pressure inside the elastic diaphragm and also raises the pressure gauge reading. Therefore, operators can easily determine the opening and closing of the ball valve simply by observing the pressure gauge reading, significantly reducing the probability of misjudgment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the ball valve of this utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the ball valve of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the valve core and the elastic diaphragm of this utility model;

[0031] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0032] Figure 5 This is a schematic diagram of the internal structure of the valve stem of this utility model.

[0033] In the diagram: 1. Valve body; 2. Inlet pipe; 3. Outlet pipe; 4. Flange; 5. Valve cover; 51. Movable cavity; 52. Magnetic ring; 6. Valve stem; 61. Vent groove; 62. Pressure gauge; 7. Valve core; 71. Elastic diaphragm; 72. Magnetic ball; 8. Through hole; 9. Handwheel; 10. Valve seat. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1-5 A ball valve cover assembly includes a valve body 1. An inlet pipe 2 is fixedly installed on the middle left side of the valve body 1 to facilitate water flow into the interior of the valve body 1. An outlet pipe 3 is fixedly installed on the middle right side of the valve body 1 to discharge water from the interior of the valve body 1. A flange 4 is fixedly installed on the end of both the inlet pipe 2 and the outlet pipe 3 away from the valve body 1 to facilitate the installation of the valve body 1. A valve cover 5 is threadedly connected to the top of the valve body 1, and the valve cover 5 includes a valve opening and closing device.

[0036] Please see Figures 1-5 The valve opening and closing device includes a valve stem 6, which is rotatably connected to the inside of the valve cover 5. A valve core 7 is fixedly sleeved on the outer surface of the valve stem 6 located in the inner cavity of the valve body 1. A through hole 8 is opened on the valve core 7 for water flow.

[0037] Please see Figures 1-5 A handwheel 9 is fixedly sleeved on the outer surface of the valve stem 6 extending from the upper side of the valve cover 5, so that the operator can drive the valve stem 6 to rotate by turning the handwheel 9. A valve seat 10 is fixedly connected to the side wall of the inner cavity of the valve body 1 near the outlet pipe 3, so as to ensure that the valve seat 10 cooperates with the valve core 7 to realize the opening and closing of the valve.

[0038] Please see Figures 1-5 The outer surface of the valve core 7 is in contact with the side wall of the valve seat 10, and the valve seat 10 has a water flow hole that is connected to the water outlet pipe 3.

[0039] Please see Figures 1-5 The valve body 1 has a movable cavity 51 located on the lower side of the valve cover 5. A magnetic ring 52 is fixedly welded to the top of the inner cavity of the movable cavity 51.

[0040] Please see Figures 1-5 The valve stem 6 has a vent groove 61 inside, and a pressure gauge 62 is fixedly installed on the top of the valve stem 6. The vent groove 61 is connected to the input end of the pressure gauge 62, so that the gas can be displayed by the pressure gauge 62 after passing through the vent groove 61.

[0041] Please see Figures 1-5An elastic diaphragm 71 is fixedly connected to the upper part of the outer surface of the valve core 7. The elastic diaphragm 71 separates the valve cover 5, valve stem 6 and water flow. A magnetic ball 72 is movably embedded on the top surface of the elastic diaphragm 71, which facilitates the rotation of the elastic diaphragm 71 when the valve core 7 rotates, and reduces resistance by using the magnetic ball 72. The lower opening of the vent groove 61 is located inside the elastic diaphragm 71.

[0042] Please see Figures 1-5 The top of the elastic membrane 71 extends into the movable cavity 51, and the magnetism of the magnetic ball 72 is opposite to that of the magnetic ring 52. The magnetic ball 72 and the magnetic ring 52 are in active contact, which facilitates the rotation of the elastic membrane 71 through the magnetic ball 72 in the movable cavity 51. The magnetic ring 52 also attracts the magnetic ball 72, ensuring that the elastic membrane 71 separates the water flow.

[0043] Working principle: When the ball valve is in normal use, the elastic diaphragm 71 is fixed on the valve core 7, and the magnetic ring 52 in the movable cavity 51 attracts the magnetic balls 72. This allows the elastic diaphragm 71 to separate the valve cover 5 from the valve stem 6, preventing the valve cover 5 and valve stem 6 from direct contact with water. This effectively prevents corrosion of the valve cover 5 and valve stem 6 by water and reduces the impact of water pressure when the ball valve is opened, allowing for rapid opening and closing. Simultaneously, during opening and closing, the valve core 7 rotates synchronously with the elastic diaphragm 71, causing the magnetic balls 72 on the elastic diaphragm 71 to roll on the magnetic ring 52. The magnetic ring 52 also attracts the magnetic balls 72, thus ensuring... The elastic diaphragm 71 separates the valve cover 5 and valve stem 6 from the water. Secondly, when the ball valve is open, the water inside the ball valve is discharged through the through hole 8, which reduces the water pressure outside the valve core 7. This weakens the pressure exerted on the elastic diaphragm 71, resulting in a decrease in the air pressure inside the diaphragm 71. Consequently, the pressure gauge 62 shows a smaller reading. When the ball valve is closed, the water flow no longer passes through the through hole, increasing the water pressure outside the valve core 7. This increases the air pressure inside the elastic diaphragm 71, and the pressure gauge 62 also increases. Therefore, operators only need to observe the pressure gauge 62 to determine whether the ball valve is open or closed, greatly reducing the probability of misjudgment.

Claims

1. A ball valve cover assembly, comprising a valve body (1), characterized in that, Also includes: The inlet pipe (2) is fixedly installed in the middle left side of the valve body (1), and the outlet pipe (3) is fixedly installed in the middle right side of the valve body (1). The inlet pipe (2) and the outlet pipe (3) are both fixedly installed with flanges (4) at the ends away from the valve body (1). The top of the valve body (1) is connected to a valve cover (5) by threads. The valve cover (5) includes a valve opening and closing device. The valve opening and closing device includes: The valve stem (6) is rotatably connected to the inside of the valve cover (5); The valve core (7) is fixedly sleeved on the outer surface of the valve stem (6) located in the inner cavity of the valve body (1); A through hole (8) is formed through the valve core (7); The valve stem (6) includes: The handwheel (9) is fixedly sleeved on the outer surface of the valve stem (6) extending out of the valve cover (5); Valve seat (10) is fixedly connected to the side wall of the inner cavity of the valve body (1) near the outlet pipe (3); The valve body (1) also includes: The movable cavity (51) is opened inside the valve body (1) and located on the lower side of the valve cover (5); A magnetic ring (52) is fixedly connected to the top of the inner cavity of the movable cavity (51); The valve stem (6) includes: A vent groove (61) is formed inside the valve stem (6); A pressure gauge (62) is fixedly connected to the top of the valve stem (6), and the vent groove (61) is connected to the input end of the pressure gauge (62); The valve core (7) includes: An elastic diaphragm (71) is fixedly connected to the upper part of the outer surface of the valve core (7); Magnetic ball bearings (72) are movably embedded in the top surface of the elastic membrane (71), and the lower opening of the ventilation groove (61) is located inside the elastic membrane (71).

2. The ball valve cover assembly according to claim 1, characterized in that: The outer surface of the valve core (7) is in contact with the side wall of the valve seat (10), and the valve seat (10) has a water flow hole that is connected to the water outlet pipe (3).

3. A ball valve cover assembly according to claim 1, characterized in that: The top of the elastic membrane (71) extends into the movable cavity (51), and the magnetism of the magnetic ball (72) is opposite to that of the magnetic ring (52), and the magnetic ball (72) is in active contact with the magnetic ring (52).

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