Sealing performance enhanced ball valve

Abstract

The utility model discloses a sealing performance enhanced ball valve which comprises a ball valve body, flange plates are arranged on the two sides of the ball valve body, a plurality of mounting holes are formed in the two flange plates at equal intervals, grooves are formed in the side walls of the two flange plates, gas rings are arranged in the two grooves, and the gas rings are arranged in the gas rings. A box body is arranged on the outer wall of the flange plate, air supply mechanisms used for supplying air to the air ring are arranged on the two sides of the box body, and a driving mechanism used for driving the air supply mechanisms is arranged in the box body. According to the ball valve, the gas ring is expanded, and the expanded gas ring is used for blocking a gap after the flange plates are connected, so that the sealing performance of the ball valve body after connection is enhanced, the operation is simple, and certain convenience is brought to people.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve with enhanced sealing performance. Background Art

[0002] Ball valve, defined in the standard GB / T21465-2008 "Valve Terminology" as: a valve whose opening and closing parts (balls) are driven by the valve stem and rotate around the axis of the ball valve. It can also be used for fluid regulation and control. Among them, the hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat with hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels. This type of valve should generally be installed horizontally in the pipeline. Ball valve classification: pneumatic ball valve, electric ball valve, manual ball valve.

[0003] In the prior art, the connection of the ball valve is generally achieved through a flange, which has a certain sealing performance after connection, but the sealing degree is not enhanced, so fluid leakage may occur, causing certain troubles for people. Some devices with enhanced sealing of the ball valve also require an additional driving source, which reduces the adaptability of the device. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art. By expanding the gas ring, the expanded gas ring seals the gap after the flange is connected, thereby enhancing the sealing performance of the ball valve body after the connection. The operation is simple and brings certain convenience to people. A ball valve with enhanced sealing performance is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A ball valve with enhanced sealing performance comprises a ball valve body, flanges are provided on both sides of the ball valve body, a plurality of mounting holes arranged at equal intervals are provided on the two flanges, grooves are provided on the side walls of the two flanges, gas rings are provided in the two grooves, a box body is provided on the outer wall of the flange, air supply mechanisms for supplying air to the air rings are provided on both sides of the box body, and a driving mechanism for driving the air supply mechanism is provided in the box body.

[0007] Preferably, the air supply mechanism comprises a connecting pipe penetrating through the side walls of both sides of the box body, and two ends of the two connecting pipes respectively penetrate the flange plates and are connected with the two air rings.

[0008] Preferably, the driving mechanism includes two symmetrically arranged fixed plates arranged in the box body, and the two fixed plates are rotatably connected to the inner walls of both sides of the box body with reciprocating screws, and the outer walls of the reciprocating screws are provided with pistons matching with their outer walls, and the pistons are slidably connected to the inner wall of the box body.

[0009] Preferably, two symmetrically arranged limiting rods are provided in the box body, and the two limiting rods both penetrate the two pistons and are slidably connected thereto.

[0010] Preferably, a rotating rod is rotatably connected through the box body and the inner wall of the ball valve body, and a plurality of circumferentially arranged rotating plates are provided on the outer wall of the rotating rod. Bevel gears are provided at the upper end of the rotating rod and the ends of the two reciprocating screws, and the plurality of bevel gears are meshed with each other.

[0011] Preferably, two symmetrically arranged air inlet pipes are provided at the upper end of the box body, and one-way valves are provided in the two air inlet pipes and the two connecting pipes, and the two one-way valves are in opposite directions.

[0012] Beneficial effects of the utility model:

[0013] 1. By expanding the gas ring, the expanded gas ring can block the gap after the flange is connected, thereby enhancing the sealing of the ball valve body after connection. The operation is simple and brings certain convenience to people.

[0014] 2. By driving the fluid to rotate multiple rotating plates, the rotating plates drive the rotating rod to rotate, and utilizing the cooperation of multiple bevel gears between the rotating rod and two reciprocating screws, the movement of the two pistons is realized, so that the device can enhance the sealing of the ball valve body without the need for a driving source, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side view schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the internal structure of the box body of the utility model.

[0018] In the figure: 1 ball valve body, 2 flange, 3 box body, 4 connecting pipe, 5 groove, 6 air ring, 7 intake pipe, 8 check valve, 9 rotating rod, 10 rotating plate, 11 fixing plate, 12 bevel gear, 13 limit rod, 14 reciprocating screw, 15 piston. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Reference Figure 1-3 A ball valve with enhanced sealing performance includes a ball valve body 1, flanges 2 are arranged on both sides of the ball valve body 1, a plurality of mounting holes arranged at equal intervals are opened on the two flanges 2, grooves 5 are opened on the side walls of the two flanges 2, gas rings 6 are arranged in the two grooves 5, a box body 3 is arranged on the outer wall of the flange 2, and gas supply mechanisms for supplying gas to the gas rings 6 are arranged on both sides of the box body 3. The gas supply mechanism includes a connecting pipe 4 penetrating the side walls of the box body 3, and both ends of the two connecting pipes 4 respectively penetrate the flange 2 and are connected with the two gas rings 6. By expanding the gas ring 6, the expanded gas ring 6 blocks the gap after the flange 2 is connected, thereby enhancing the sealing performance of the ball valve body 1 after connection. The operation is simple, which brings certain convenience to people.

[0022] A driving mechanism for driving the air supply mechanism is provided in the box body 3, and the driving mechanism includes two symmetrically arranged fixed plates 11 arranged in the box body 3. The two fixed plates 11 are rotatably connected to the inner walls on both sides of the box body 3 through reciprocating screws 14. The outer walls of the reciprocating screws 14 are provided with pistons 15 that cooperate with their outer walls. The pistons 15 are slidably connected to the inner walls of the box body 3.

[0023] Two symmetrically arranged limiting rods 13 are arranged in the box body 3 , and the two limiting rods 13 both penetrate the two pistons 15 and are slidably connected thereto.

[0024] A rotating rod 9 is rotatably connected to the box body 3 and the inner wall of the ball valve body 1. The outer wall of the rotating rod 9 is provided with a plurality of circumferentially arranged rotating plates 10. The upper end of the rotating rod 9 and the ends of the two reciprocating screws 14 are provided with bevel gears 12. The plurality of bevel gears 12 are meshed with each other. The fluid drives the plurality of rotating plates 10 to rotate, so that the rotating plates 10 drive the rotating rod 9 to rotate. The cooperation of the plurality of bevel gears 12 between the rotating rod 9 and the two reciprocating screws 14 is utilized to realize the movement of the two pistons 15, so that the device can enhance the sealing performance of the ball valve body 1 without the need for a driving source, thereby improving the adaptability of the device.

[0025] Two symmetrically arranged air inlet pipes 7 are provided at the upper end of the box body 3. Both the air inlet pipes 7 and the two connecting pipes 4 are provided with one-way valves 8, and the valve directions of the two one-way valves 8 are opposite.

[0026] When the utility model is used, the flange 2 is connected to the pipeline. When material flows in the ball valve body 1, the material flow drives the multiple rotating plates 10 to rotate, thereby causing the multiple rotating plates 10 to drive the rotating rod 9 to rotate. The two reciprocating screws 14 are rotated by the meshing action of the bevel gear 12 between the rotating rod 9 and the two reciprocating screws 14, and then the two pistons 15 are moved to squeeze the gas in the box body 3 into the connecting pipe 4 through the cooperation of the piston 15 and the limiting action of the limit rod 13 on the piston 15. When the piston 15 returns, the intake pipe 7 sucks external gas into the box body 3. This reciprocating process causes the piston 15 to squeeze the gas into the gas ring 6, thereby causing the gas ring 6 to expand, and the expanded gas ring 6 to seal the gap after the flange 2 is connected, thereby enhancing the sealing performance of the ball valve body 1 after the connection. The operation is simple and no additional driving source is required, which brings certain convenience to people.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball valve with enhanced sealing performance, comprising a ball valve body (1), characterized in that: Flanges (2) are provided on both sides of the ball valve body (1), a plurality of mounting holes arranged at equal intervals are provided on the two flanges (2), grooves (5) are provided on the side walls of the two flanges (2), gas rings (6) are provided in the two grooves (5), a box body (3) is provided on the outer wall of the flange (2), gas supply mechanisms for supplying gas to the gas rings (6) are provided on both sides of the box body (3), and a driving mechanism for driving the gas supply mechanism is provided in the box body (3).

2. A ball valve with enhanced sealing performance according to claim 1, characterized in that: The air supply mechanism comprises a connecting pipe (4) penetrating the side walls of the box body (3), and the two ends of the two connecting pipes (4) respectively penetrate the flange plate (2) and are connected to the two air rings (6).

3. A ball valve with enhanced sealing performance according to claim 2, characterized in that: The driving mechanism comprises two symmetrically arranged fixed plates (11) arranged in the box body (3), and reciprocating screws (14) are rotatably connected to the two fixed plates (11) and the inner walls on both sides of the box body (3), and the outer walls of the reciprocating screws (14) are provided with pistons (15) matched with the outer walls thereof, and the pistons (15) are slidably connected to the inner wall of the box body (3).

4. A ball valve with enhanced sealing performance according to claim 3, characterized in that: Two symmetrically arranged limiting rods (13) are provided in the box body (3), and the two limiting rods (13) both penetrate the two pistons (15) and are slidably connected thereto.

5. A ball valve with enhanced sealing performance according to claim 4, characterized in that: A rotating rod (9) is rotatably connected to the box body (3) and the inner wall of the ball valve body (1). The outer wall of the rotating rod (9) is provided with a plurality of circumferentially arranged rotating plates (10). The upper end of the rotating rod (9) and the ends of the two reciprocating screws (14) are both provided with bevel gears (12), and the plurality of bevel gears (12) are meshed with each other.

6. A ball valve with enhanced sealing performance according to claim 5, characterized in that: Two symmetrically arranged air intake pipes (7) are provided at the upper end of the box body (3), and one-way valves (8) are provided in the two air intake pipes (7) and the two connecting pipes (4), and the two one-way valves (8) are in opposite directions.

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