Composite sealing type semi-ball valve

Abstract

The utility model provides a composite sealing type semi-ball valve, which belongs to the technical field of semi-ball valves, and comprises a pipeline, a valve body is communicated on the pipeline, the valve body comprises a valve rod, the bottom of the valve rod is connected with a semi-ball-shaped valve cover in a deviated manner, and the bottom of the valve cover is fixedly connected with a base. The base is rotationally connected to the bottom of the inner wall face of the pipeline, and a sealing mechanism is arranged on the valve deck. The semi-ball valve solves the problems that when an existing semi-ball valve is used, after an original sealing component is used for a long time and a conveying medium in a pipeline is scoured and eroded for a long time, the sealing effect of the existing sealing component is greatly reduced, and the service life of the existing semi-ball valve is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of half ball valve, concretely relates to a composite sealing type half ball valve. BACKGROUND

[0002] Ball valves not only have simple structure and good sealing performance, but also have small volume, light weight, less material consumption, small installation size, small driving torque, simple operation and easy realization of quick opening and closing in a certain nominal diameter range, and are one of the fastest developing valve varieties in recent ten years. Ball valves are widely used, and the variety and quantity are still expanding, and develop towards high temperature, high pressure, large port, high sealing performance, long service life, excellent regulating performance and multi-functional valve, the reliability and other performance indexes reach a high level, and have partially replaced gate valves, stop valves and throttle valves.

[0003] The existing half ball valve in use, the original sealing part after long time use and the long time scouring and erosion of the conveying medium in the pipeline, lead to its sealing effect will greatly reduce the service life. SUMMARY

[0004] The utility model provides a composite sealing type half ball valve, its purpose lies in solving the existing half ball valve in use, the original sealing part after long time use and the long time scouring and erosion of the conveying medium in the pipeline, lead to its sealing effect will greatly reduce the service life's problem.

[0005] The utility model embodiment provides a composite sealing type half ball valve, including the pipeline, the pipeline is connected with the valve body, the valve body includes the valve rod, the bottom of the valve rod is connected with the half ball valve cover, the bottom of the valve cover is fixedly connected with the base, the base is rotatably connected in the inner wall surface bottom of the pipeline, the upper of the valve cover is equipped with sealing mechanism.

[0006] Further, the valve cover is respectively equipped with concave side and convex side, the concave side is set to the pipeline transportation medium flow direction.

[0007] Through adopting the above technical scheme, when the water flow impacts the concave side, the vortex can be formed, and the impact degree is reduced, and the overall sealing effect is enhanced.

[0008] Further, the upper and lower ends of the pipeline inner wall surface are fixedly connected with the convex edge, and the outer surface of the convex edge is fixedly connected with the sealing gasket.

[0009] Through adopting the above technical scheme, the convex edge of the pipeline can be inserted into the groove, and the sealing gasket can further enhance the overall sealing effect.

[0010] Further, the sealing mechanism comprises two grooves arranged on the convex side, the upper wall and the lower wall of the grooves are fixedly connected with springs, the springs are fixedly connected with extrusion blocks, and the middle part of the extrusion blocks is fixedly connected with telescopic pieces.

[0011] By adopting the above technical scheme, when the convex edge and the sealing gasket on the surface thereof are inserted into the grooves, the extrusion blocks can be extruded, the extrusion blocks move upwards along the telescopic pieces, the springs are compressed, the extrusion blocks can move downwards under the action of the springs, and the tightness between the extrusion blocks and the sealing gasket is greatly improved.

[0012] Further, the side close to the convex edge of the extrusion block is flared.

[0013] By adopting the above technical scheme, the flared extrusion block enables the convex edge to be smoothly inserted thereinto, and prevents the two extrusion blocks from being too close due to the action of the springs, so that the convex edge cannot be inserted thereinto.

[0014] Further, the interval of the extrusion blocks is matched with the height of the convex edge.

[0015] By adopting the above technical scheme, the convex edge and the sealing gasket on the surface thereof are inserted between the two extrusion blocks, the tightness is greatly improved, and the sealing performance is further improved.

[0016] The utility model discloses the beneficial effect is:

[0017] 1. The utility model discloses a sealing mechanism is set up, when the convex edge and the sealing gasket on the surface thereof are inserted into the grooves, the extrusion blocks can be extruded, the extrusion blocks move upwards along the telescopic pieces, the springs are compressed, the extrusion blocks can move downwards under the action of the springs, and the tightness between the extrusion blocks and the sealing gasket is greatly improved.

[0018] 2. The utility model discloses the setting of the extrusion block, the flared extrusion block enables the convex edge to be smoothly inserted thereinto, and prevents the two extrusion blocks from being too close due to the action of the springs, so that the convex edge cannot be inserted thereinto.

[0019] 3. The utility model discloses the setting of the convex edge and the sealing gasket, the convex edge of the pipeline can be inserted into the grooves, and then the sealing gasket can further improve the sealing effect of the whole.

[0020] Other features and advantages of the utility model will be set forth in the subsequent description, and partially become obvious from the description, or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structure specially pointed out in the description and the drawings.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0022] Fig. 1 It is a side view of the embodiment of the present application.

[0023] Fig. 2 It is an enlarged structure schematic view of the embodiment of the present application.

[0024] Fig. 3 It is a front view structure schematic view of the convex side of the valve cover of the embodiment of the present application.

[0025] The drawings show: 1, pipeline; 11, convex edge; 12, sealing gasket; 2, valve body; 3, valve stem; 4, valve cover; 41, concave side; 42, convex side; 5, base; 6, sealing mechanism; 61, groove; 62, spring; 63, extrusion block; 64, telescopic piece. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the technical scheme of the present application more clear, the following will combine the drawings of the specific embodiments of the present application to make a clear and complete description of the technical scheme of the embodiments of the present application. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] With reference to Figs. 1-3 The embodiment of the present application proposes a composite sealing type half ball valve, which comprises a pipeline 1, the pipeline 1 is communicated with a valve body 2, the valve body 2 comprises a valve stem 3, the bottom of the valve stem 3 is connected with a half ball valve cover 4, and a sealing part is originally arranged between the valve cover 4 and the pipeline 1. When the valve cover 4 closes the pipeline 1, the sealing part can already realize the purpose of sealing the pipeline 1, the valve cover 4 is respectively provided with a concave side 41 and a convex side 42, the concave side 41 is arranged towards the flow direction of the pipeline 1, when the water flow impacts the concave side 41, a vortex can be formed, thereby reducing the impact degree and simultaneously strengthening the overall sealing effect.

[0028] With reference to Figs. 1-3The bottom of the valve cover 4 is fixedly connected with a base 5, the base 5 is rotationally connected to the inner wall bottom of the pipeline 1, the upper portion of the valve cover 4 is provided with a sealing mechanism 6, the sealing mechanism 6 comprises two grooves 61 provided on the convex side 42, the upper wall and the lower wall of the groove 61 are fixedly connected with a plurality of springs 62, the spring 62 is fixedly connected with a pressing block 63, the middle portion of the pressing block 63 is fixedly connected with an expansion piece 64, the upper and lower ends of the inner wall of the pipeline 1 are fixedly connected with a convex edge 11, the outer surface of the convex edge 11 is fixedly connected with a sealing gasket 12, when the convex edge 11 and the sealing gasket 12 on the surface thereof are inserted into the groove 61, the pressing block 63 can be extruded, the pressing block 63 moves upward along the expansion piece 64, and the spring 62 is compressed, under the action of the spring 62, the pressing block 63 can generate a downward movement force, thereby clamping the convex edge 11, greatly enhancing the tightness between the pressing block 63 and the sealing gasket 12, avoiding the leakage of the medium in the pipeline 1 after the original sealing element between the valve cover 4 and the pipeline 1 is worn after long-term use, greatly improving the overall sealing performance and prolonging the service life.

[0029] Referring to Figs. 1-3 The side of the pressing block 63 close to the convex edge 11 is in a flared shape, the flared pressing block 63 enables the convex edge 11 to be smoothly inserted thereinto, avoiding the two pressing blocks 63 from being too close due to the action of the spring 62, which causes the convex edge 11 to be unable to be inserted thereinto, the spacing of the relative pressing blocks 63 is matched with the height of the convex edge 11, facilitating the insertion of the convex edge 11 and the sealing gasket 12 on the surface thereof between the two pressing blocks 63, greatly improving the overall tightness and further improving the sealing performance.

[0030] Specifically, when in normal use, there is a sealing component between the valve cover 4 and the pipeline 1, when the valve cover 4 is rotated to be closed, the valve cover 4 can cut off the connection between the two sides of the pipeline 1, so that the medium cannot be transported in the pipeline 1, when the sealing element is worn after long-term use, the sealing effect cannot be achieved, at this time, the convex edge 11 of the inner wall of the pipeline 1 can be inserted into the groove 61 on the surface of the valve cover 4, the convex edge 11 can extrude the pressing block 63, the pressing block 63 moves upward under the limitation of the expansion piece 64, and the spring 62 is compressed, at this time, the sealing gasket 12 on the surface of the convex edge 11 can be tightly combined with the pressing block 63, thereby achieving the sealing effect, avoiding the leakage of the medium from the worn part after the original sealing element is worn, greatly improving the overall sealing performance and prolonging the service life.

[0031] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A composite seal type half ball valve comprising a pipe (1) having a valve body (2) communicated thereon, characterized in that, The valve body (2) comprises a valve stem (3), the bottom of the valve stem (3) is connected with a hemispherical valve cover (4), the bottom of the valve cover (4) is fixedly connected with a base (5), the base (5) is rotationally connected to the inner wall bottom of the pipeline (1), and the valve cover (4) is provided with a sealing mechanism (6).

2. A composite seal type half ball valve according to claim 1, characterized in that: The valve cover (4) is respectively provided with a concave side (41) and a convex side (42), and the concave side (41) is arranged towards the pipeline (1) conveying medium flow direction.

3. A composite seal type half ball valve according to claim 1, characterized in that: The upper and lower ends of the inner wall of the pipeline (1) are fixedly connected with a convex edge (11), and the outer surface of the convex edge (11) is fixedly connected with a sealing gasket (12).

4. A composite seal type half ball valve according to claim 2, wherein: The sealing mechanism (6) comprises two grooves (61) arranged on the convex side (42), the upper wall and the lower wall of the groove (61) are fixedly connected with a plurality of springs (62), the spring (62) is fixedly connected with an extrusion block (63), and the middle part of the extrusion block (63) is fixedly connected with an expansion piece (64).

5. A composite seal type half ball valve according to claim 4, wherein: The side of the extrusion block (63) close to the convex edge (11) is flared.

6. A composite seal type half ball valve according to claim 5, wherein: The interval of the extrusion block (63) and the height of the convex edge (11) are matched.

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