Enhanced sealing ball valve

Abstract

The utility model relates to the field of ball valves, and provides a sealing-enhanced ball valve which comprises a valve body, flange plates are arranged at the two outer ends of the valve body respectively, connecting pipes are fixedly installed on the outer sides of the flange plates through bolt sets, and sealing rings are installed between the flange plates and the connecting pipes. A flange plate is arranged at the outer end of the connecting position of the valve body and the connecting pipe, two sealing covers are fixedly arranged on the outer side of the flange plate and the outer side of the connecting pipe, a sealing gasket is arranged between the two sealing covers, and the sealing gasket is arranged on the outer side of the flange plate and the outer side of the connecting pipe. Secondary sealing of the connecting part can be formed, and it is ensured that leakage is not prone to occurring in the using process by enhancing the sealing effect.

Description

Technical Field

[0001] The utility model belongs to the field of ball valves and relates to a ball valve with enhanced sealing. Background Art

[0002] In my country, ball valves are widely used in oil refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees, the plug body is a sphere, and there is a circular through hole or channel passing through its axis.

[0003] The ball valve needs to be connected to the pipeline for use. The rotation of the internal ball is used to control the flow of the pipeline and realize the opening and closing of the channel. A sealing gasket is usually used at the connection between the pipeline and the valve body. When the internal water pressure is too high, the pressure will impact the sealing gasket, which may cause a gap between the pipeline and the valve body, thereby causing leakage. Utility Model Content

[0004] The purpose of the utility model is to provide an agricultural mechanized planting device, which solves the problem that the ball valve needs to be connected to a pipeline for use, utilizes the rotation of the internal ball to control the flow of the pipeline and realize the opening and closing of the channel. A sealing gasket is usually used at the connection between the pipeline and the valve body. When the internal water pressure is too high, the pressure will impact the sealing gasket, which may cause a gap between the pipeline and the valve body, thereby causing leakage.

[0005] The technical solution of the utility model is achieved as follows: it includes a valve body, flanges are respectively provided at both outer ends of the valve body, a connecting pipe is fixedly installed on the outer side of the flange by a bolt group, a sealing ring is installed between the flange and the connecting pipe, two sealing covers are fixedly installed on the outer sides of the flange and the connecting pipe, a sealing gasket is installed between the two sealing covers, the sealing gasket is installed on the outer sides of the flange and the connecting pipe, the sealing ring is made of rubber material, the sealing cover is made of cast iron material, and the outer side is painted.

[0006] As a preferred solution of the utility model, a flow channel is provided in the middle of the flange, the diameter of the flow channel is larger than the diameter of the channel in the middle of the valve body, and the inner corners of the flow channel are chamfered.

[0007] As a preferred solution of the utility model, six groups of fixing holes are arranged at the edge of the flange end face, and six groups of fixing holes are arranged at corresponding positions of the flange at the outer end of the pipeline, corresponding to the flange positions of the valve body, for common installation of bolts.

[0008] As a preferred solution of the utility model, a ball is rotatably installed at the center of the valve body, a channel is provided in the lower middle part of the ball, and the ball is rotatably installed at the bottom inner side of the valve body. The ball is made of steel, and the flow channel inside it is circular. The diameter of the circle is smaller than the diameter of the flow channel, and the outer side of the ball is chrome-plated.

[0009] As a preferred solution of the utility model, a valve stem is fixedly installed on the upper part of the sphere, a handle is bolted on the top of the valve stem, the outer side of the valve stem is rotatably installed on the inner side of the fixing seat, the fixing seat is installed on the middle upper end of the valve body through a pressure cover, a threaded hole is provided on the top of the valve stem for installing bolts to fix the handle, and the outer side of the handle is painted.

[0010] As a preferred solution of the utility model, two sets of sealing blocks are slidably installed on the outside of the sphere, the sealing block bolts are installed on both ends of the inner side of the valve body, a round hole is arranged in the middle of the sealing block, and the sealing block is made of rubber material.

[0011] As a preferred solution of the utility model, a fixing plate is fixedly installed on the outer side of the sealing cover, and the fixing plate and the sealing cover are an integrated structure formed by casting, and two circular holes are arranged in the middle of the fixing plate.

[0012] As a preferred solution of the utility model, a card channel is arranged on the inner side of the sealing gasket, and the card channel is formed by injection molding.

[0013] The utility model has the beneficial effect of an enhanced sealing ball valve: the utility model installs two sealing covers on the outer end of the connection between the valve body and the connecting pipe, and a sealing gasket is installed between the two sealing covers, which can form a secondary seal for the connection part, and ensure that leakage is not easy to occur during use by enhancing the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0015] Figure 2 This is a structural diagram of a flange according to an embodiment of the utility model;

[0016] Figure 3 This is a structural diagram of a sealing enhancement component according to an embodiment of the utility model;

[0017] Figure 4 This is a structural diagram of a sealing cover according to an embodiment of the utility model;

[0018] Figure 5 This is a structural diagram of a sealing gasket according to an embodiment of the utility model;

[0019] In the figure: 1. valve body; 2. fixed seat; 3. gland; 4. valve stem; 5. handle; 6. ball; 7. channel; 8. sealing block; 9. flange; 10. sealing cover; 11. bolt group; 12. sealing gasket; 13. connecting pipe; 14. fixing hole; 15. sealing ring; 16. flow channel; 17. fixing plate; 18. clamping channel. DETAILED DESCRIPTION

[0020] like Figures 1 to 5 As shown, the utility model discloses a ball valve with enhanced sealing, and the technical scheme adopted is, comprising a valve body 1, flanges 9 are respectively arranged at the two outer ends of the valve body 1, a connecting pipe 13 is fixedly installed on the outer side of the flange 9 by a bolt group 11, a sealing ring 15 is installed between the flange 9 and the connecting pipe 13, two sealing covers 10 are fixedly installed on the outer sides of the flange 9 and the connecting pipe 13, a sealing gasket 12 is installed between the two sealing covers 10, and the sealing gasket 12 is installed on the outer sides of the flange 9 and the connecting pipe 13. The utility model installs two sealing covers 10 at the outer end of the connection between the valve body 1 and the connecting pipe 13, and a sealing gasket 12 is installed between the two sealing covers 10, so as to form a secondary seal on the connection part, and ensure that leakage is not easy to occur during use by enhancing the sealing effect.

[0021] A flow channel 16 is provided in the middle of the flange 9, and the flow channel 16 is provided for the passage of fluid to realize the flow of liquid.

[0022] Six groups of fixing holes 14 are arranged at the edge of the end face of the flange 9. Bolts are installed in the fixing holes 14. The flange at the outer end of the pipeline and the flange at the outer end of the valve body are fixed by the bolts to complete the fixing of the pipeline and the valve body.

[0023] A ball 6 is rotatably mounted at the center of the valve body 1 , a channel 7 is provided at the lower middle portion of the ball 6 , and the ball 6 is rotatably mounted on the inner bottom of the valve body 1 .

[0024] A valve stem 4 is fixedly installed on the upper part of the ball 6, and a handle 5 is bolted on the upper part of the valve stem 4. The outer side of the valve stem 4 is rotatably installed on the inner side of the fixed seat 2. The fixed seat 2 is installed on the middle upper end of the valve body 1 through the pressure cover 3. When the handle 5 is rotated, the valve stem 4 is used to drive the rotation adjustment of the ball 6 to connect or disconnect the channel 7 with the inside of the valve body 1 to control the on and off of the valve body 1. The pressure cover 3 is used to fix the fixed seat 2.

[0025] Two sets of sealing blocks 8 are slidably installed on the outside of the ball 6. The sealing blocks 8 are bolted to the two ends of the inner side of the valve body 1. The sealing blocks 8 are used to limit the ball 6 and contact the ball when the valve body 1 is closed to play a sealing role. The inner side of the sealing block 8 is provided with a wear-resistant coating.

[0026] A fixing sheet 17 is fixedly mounted on the outer side of the sealing cover 10 . The fixing sheet 17 is used to connect another set of fixing sheets 17 to fix the two sealing covers 10 .

[0027] A snap-in channel 18 is provided on the inner side of the sealing gasket 12 , and the snap-in channel 18 is used for snapping in the sealing cover 10 to achieve sealing between the two sealing covers 10 .

[0028] Working principle of this enhanced sealing ball valve: When using an enhanced sealing ball valve, align the flange of the pipeline and the flange 9 at the outer end of the valve body 1, so that the sealing pressure gauge 15 is clamped between the pipeline and the valve body 1, and fixed with bolts. After fixing, install the sealing cover 10 on the card channel 18, and install the bolt group in the upper and lower fixing plates 17, so that the two sealing covers 10 are installed on the outer sides of the flange 9 and the connecting pipe 13, and the sealing gaskets 12 are squeezed to form a secondary seal. The handle 5 is rotated, the valve stem 4 is rotated, and the ball 6 is driven to rotate, so that the channel 7 is connected or disconnected with the inside of the valve body 1.

[0029] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A ball valve with enhanced sealing, characterized in that: The valve body (1) comprises a valve body (1), wherein flanges (9) are respectively arranged at the two outer ends of the valve body (1), a connecting pipe (13) is fixedly mounted on the outer side of the flange (9) via a bolt group (11), a sealing ring (15) is mounted between the flange (9) and the connecting pipe (13), two sealing covers (10) are fixedly mounted on the outer sides of the flange (9) and the connecting pipe (13), a sealing gasket (12) is mounted between the two sealing covers (10), and the sealing gasket (12) is mounted on the outer sides of the flange (9) and the connecting pipe (13).

2. A ball valve with enhanced sealing according to claim 1, characterized in that: A flow channel (16) is provided in the middle of the flange (9).

3. The ball valve with enhanced sealing according to claim 1, characterized in that: Six groups of fixing holes (14) are arranged at the edge of the end surface of the flange (9).

4. The ball valve with enhanced sealing according to claim 1, characterized in that: A spherical body (6) is rotatably mounted at the center of the valve body (1), a channel (7) is provided at the lower middle portion of the spherical body (6), and the spherical body (6) is rotatably mounted on the inner bottom of the valve body (1).

5. A ball valve with enhanced sealing according to claim 4, characterized in that: A valve stem (4) is fixedly mounted on the upper part of the sphere (6), a handle (5) is bolted on the upper part of the valve stem (4), the outer side of the valve stem (4) is rotatably mounted on the inner side of a fixing seat (2), and the fixing seat (2) is mounted on the upper end of the middle part of the valve body (1) through a gland (3).

6. A ball valve with enhanced sealing according to claim 4, characterized in that: Two sets of sealing blocks (8) are slidably mounted on the outside of the ball (6), and the sealing blocks (8) are bolted to the two ends of the inside of the valve body (1).

7. The ball valve with enhanced sealing according to claim 1, characterized in that: A fixing plate (17) is fixedly mounted on the outer side of the sealing cover (10).

8. The ball valve with enhanced sealing according to claim 1, characterized in that: A card channel (18) is provided on the inner side of the sealing gasket (12).

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