Ball valve sealing structure

Abstract

The utility model provides a ball valve sealing structure which comprises a valve body, a ball groove is formed in the valve body, a ball valve element is embedded in the ball groove, a water inlet is formed in one side of the valve body, a water outlet is formed in the other side of the valve body, and a sealing rubber sleeve is arranged outside the ball valve element in a sleeved mode. Compared with the prior art, the ball valve has the advantages that the ball valve element rotates in the ball groove through the sealing rubber sleeve, the sealing performance of the connecting position of the ball valve element and the ball groove is improved, the sealing performance of the ball valve element is improved, the sealing performance of the ball valve element is improved, and the service life of the ball valve element is prolonged. And when the connecting shaft rotates, the sealing rubber ring can rotate at the mounting groove, so that the sealing performance of the connecting part of the connecting shaft and the valve body can be improved, and the phenomenon that the liquid conveyed in the valve body leaks out from the lower part of the handle is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ball valve sealing structure and belongs to the technical field of valves. BACKGROUND

[0002] Ball valve is a commonly used fluid control valve, which is a device for controlling the on-off of medium by rotating the ball. It is usually composed of a ball, a valve seat, a valve stem and an operating lever. The ball has a hole in the middle. When the ball is aligned with the valve seat, the medium can pass through smoothly. When the ball is rotated by 90 degrees, the hole is not aligned with the valve seat, and the medium is blocked. Ball valve has the characteristics of simplicity, durability, good sealing, easy operation and small flow resistance, and is widely used in various industrial pipeline systems, including petroleum, chemical industry, natural gas and water treatment.

[0003] In the prior art, a sealing structure is provided inside the ball valve. This structure uses elastic materials such as rubber and polytetrafluoroethylene (PTFE) between the ball and the valve seat to form a seal. When the ball rotates, the elastic material can adaptively seal the gap between the ball and the valve seat to ensure the sealing effect. During the operation of the ball valve, the handle is usually rotated to drive the valve stem to rotate, and the valve stem drives the ball core inside the valve body to rotate and adjust. Although a sealing rubber sleeve is provided between the ball and the valve body, the rubber sleeve will age and lose elasticity after long-term use, which will cause the sealing performance to deteriorate. Since the valve stem and the valve body are connected by bearings, the sealing performance is poor, which causes the liquid to leak out from the connection between the valve stem and the valve body.

[0004] Therefore, the utility model provides a ball valve sealing structure to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies of the prior art, the utility model aims to provide a ball valve sealing structure to solve the problem of poor sealing performance at the connection between the valve stem and the valve body mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a ball valve sealing structure, comprising a valve body, a ball groove is formed in the inside of the valve body, a ball valve core is embedded in the inside of the ball groove, a water inlet is formed in one side of the valve body, a water outlet is formed in the other side of the valve body, a sealing rubber sleeve is sleeved on the outside of the ball valve core, a through hole is formed between the two sides of the ball valve core, a sealing handle is installed on the top of the valve body, the bottom of the sealing handle penetrates the valve body and the sealing rubber sleeve and extends to the top of the ball valve core, and an auxiliary rotating assembly is installed between the bottom of the ball valve core and the bottom of the inner wall of the ball groove.

[0007] Further, one end of the through hole is connected with one end of the water inlet, and the other end of the through hole is connected with one end of the water outlet.

[0008] Further, the outer surface of the spherical valve core is tightly attached to the inner wall of the ball groove through a sealing rubber sleeve, and the two ends of the through hole extend to the two sides of the sealing rubber sleeve.

[0009] Further, the sealing handle comprises a clamping block and a mounting groove, the clamping block is embedded on the top of the spherical valve core, the top of the clamping block is fixedly connected with a connecting shaft, the mounting groove is arranged in the interior of the valve body and located at the top of the ball groove, one end of the connecting shaft penetrates the sealing rubber sleeve, the mounting groove and the valve body in sequence and extends to the upper side of the valve body, a connecting block is embedded on one end of the connecting shaft, a handle is fixedly connected on the top of the connecting block and located at one end of the connecting shaft, a long rod screw is arranged on one side of the top of the handle and penetrates the connecting block and extends to the interior of the connecting shaft, and a sealing rubber ring is arranged on the shaft surface of the connecting shaft and located in the interior of the mounting groove.

[0010] Further, the bottom of the mounting groove is communicated with the top of the ball groove, the connecting shaft is rotatably connected with the valve body, and the bottom of the handle is in contact with the top end of the connecting shaft.

[0011] Further, a threaded hole is arranged between the top and the bottom of the handle and matched with the long rod screw for threaded connection.

[0012] Further, a threaded hole is arranged between the top and the bottom of the connecting block and matched with the long rod screw for threaded connection, and a threaded hole is arranged in the interior of the connecting shaft and matched with the long rod screw for threaded connection.

[0013] Further, the auxiliary rotating assembly comprises a rotating groove and a fixing block, the rotating groove is arranged in the interior of the valve body and located at the bottom of the ball groove, the fixing block is embedded on the bottom of the spherical valve core, the bottom of the spherical valve core is fixedly connected with a rotating shaft, and the bottom end of the rotating shaft penetrates the sealing rubber sleeve and extends to the bottom of the inner wall of the rotating groove.

[0014] The utility model discloses the beneficial effect of:

[0015] The spherical valve core rotates in the interior of the ball groove through the sealing rubber sleeve, the sealing performance of the connecting place of the spherical valve core and the ball groove is improved, the liquid conveying in the interior of the valve body is guaranteed to discharge only from the water inlet, the through hole and the water outlet, when the connecting shaft rotates, the sealing rubber ring can rotate in the mounting groove, thereby the sealing performance of the connecting place of the connecting shaft and the valve body can be improved, and the phenomenon that the liquid conveying in the interior of the valve body leaks from below the handle is prevented.

[0016] When the bottom end of the connecting shaft drives the spherical valve core to rotate through the connecting block, the bottom of the spherical valve core can rotate through the rotating shaft in the interior of the auxiliary rotating assembly, the adjusting resistance of the spherical valve core in the interior of the ball valve is reduced, and the use comfort of the ball valve is improved.

[0017] The ball valve core is positioned and rotated up and down by the rotating shaft inside the auxiliary rotating assembly and the connecting shaft inside the sealing handle, thereby improving the installation stability of the ball valve core inside the valve body, resisting the impact force on the ball valve core when the fluid inside the valve body passes through the ball valve core, protecting the ball valve core, and extending the service life of the ball valve. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a three-dimensional schematic diagram of a ball valve sealing structure according to the present invention;

[0020] Figure 2 This is a schematic main sectional view of the ball valve sealing structure of this utility model;

[0021] Figure 3 for Figure 2 The schematic side view of the magnetic coil shown;

[0022] Figure 4 This is a top view illustrating the structure of a ball valve sealing structure according to this utility model.

[0023] Figure 5 for Figure 2 The schematic top view of the heat-conducting base shown;

[0024] Figure 6 for Figure 2 The diagram above shows a top view illustrating the structure of the heat-conducting base.

[0025] In the diagram: 1. Valve body; 2. Ball groove; 3. Inlet; 4. Outlet; 5. Ball valve core; 6. Sealing sleeve; 7. Sealing handle; 8. Through hole; 9. Auxiliary rotating assembly; 71. Locking block; 72. Connecting shaft; 73. Mounting groove; 74. Sealing ring; 75. Connecting block; 76. Handle; 77. Long rod screw; 91. Rotary groove; 92. Rotating shaft; 93. Fixing block. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Please see Figures 1-6The utility model provides a technical scheme: a ball valve sealing structure, including the valve body 1, the inside of valve body 1 is opened with ball groove 2, the inside of ball groove 2 is embedded with ball valve element 5, the one side of valve body 1 is opened with water inlet 3, the other side of valve body 1 is opened with water outlet 4, the outside of ball valve element 5 is equipped with sealing rubber sleeve 6, the both sides of ball valve element 5 are opened with through -hole 8, the top of valve body 1 is equipped with sealing handle 7, the bottom of sealing handle 7 penetrates valve body 1 and sealing rubber sleeve 6 and extends to the top of ball valve element 5, the bottom of ball valve element 5 and the bottom of ball groove 2 inner wall are installed with auxiliary rotating assembly 9, one end of through -hole 8 is linked with the one end of water inlet 3, the other end of through -hole 8 is linked with the one end of water outlet 4, the outer surface of ball valve element 5 is tightly combined with the inner wall of ball groove 2 through sealing rubber sleeve 6, and both ends of through -hole 8 extend to the both sides of sealing rubber sleeve 6 respectively.

[0028] Please refer to Figure 3 And Figure 5 , sealing handle 7 includes clamping block 71 and installation groove 73, clamping block 71 is embedded in the top of ball valve element 5, the top of clamping block 71 is fixedly connected with connecting shaft 72, installation groove 73 is opened in the inside of valve body 1 and is located at the top of ball groove 2, one end of connecting shaft 72 penetrates sealing rubber sleeve 6, installation groove 73 and valve body 1 in proper order and extends to the upper of valve body 1, one end of connecting shaft 72 is embedded with connecting block 75, the top of connecting block 75 and the one end of connecting shaft 72 are fixedly connected with handle 76, one side of handle 76 top penetrates long rod screw 77, one end of long rod screw 77 penetrates connecting block 75 and extends to the inside of connecting shaft 72, the shaft surface of connecting shaft 72 and the inside of installation groove 73 are equipped with sealing rubber ring 74, the bottom of installation groove 73 is linked with the top of ball groove 2, connecting shaft 72 is rotatably connected with valve body 1, the bottom of handle 76 and the top of connecting shaft 72 are in contact, the top and the bottom of handle 76 are opened with the threaded hole of cooperation long rod screw 77 screw connection, the top and the bottom of connecting block 75 are opened with the threaded hole of cooperation long rod screw 77 screw connection, the inside of connecting shaft 72 is opened with the threaded hole of cooperation long rod screw 77 screw connection, handle 76 is fixedly connected with connecting shaft 72 through long rod screw 77, the shaft surface of connecting shaft 72 can be tightly combined with the inner wall of installation groove 73 through sealing rubber ring 74 to improve the sealing property of the connecting place of connecting shaft 72 and valve body 1, prevent the liquid transported in the inside of valve body 1 from leaking from the below of handle 76.

[0029] Please refer to Figure 3 And Figure 6The auxiliary rotating component 9 includes a rotating groove 91 and a fixing block 93. The rotating groove 91 is opened inside the valve body 1 and located at the bottom of the ball groove 2. The fixing block 93 is embedded in the bottom of the ball valve core 5. The bottom of the ball valve core 5 is fixedly connected to a rotating shaft 92. The bottom end of the rotating shaft 92 passes through the sealing sleeve 6 and extends to the bottom of the inner wall of the rotating groove 91. The bottom end of the rotating shaft 92 is rotatably connected to the bottom of the inner wall of the rotating groove 91. The bottom of the ball valve core 5 is provided with a groove that matches the fixing block 93.

[0030] Detailed Implementation: By gripping the handle 76 and rotating it clockwise and counterclockwise, the connecting block 75 can be rotated clockwise and counterclockwise. The top of the connecting block 75 is interlocked with the top of the connecting shaft 72, allowing the connecting shaft 72 to rotate clockwise and counterclockwise for adjustment. The connecting shaft 72 drives the ball valve core 5 to rotate clockwise and counterclockwise within the ball groove 2 inside the valve body 1, thereby adjusting the position of both ends of the through hole 8. When the ball valve core 5 rotates 90°, the two ends of the through hole 8 are no longer connected to the inlet 3 and outlet 4, thus blocking the flow of liquid inside the valve body 1. When the ball valve core 5 continues to rotate 90°, the inlet 3, outlet 4, and through hole 8 are connected. The ball valve core 5 rotates inside the ball groove 2 through the sealing sleeve 6, improving the sealing performance at the connection between the ball valve core 5 and the ball groove 2, ensuring that the liquid inside the valve body 1 is only transported through the inlet 3 and through hole 8. The water is discharged through hole 8 and outlet 4. When the connecting shaft 72 rotates, it can rotate through the sealing ring 74 at the mounting groove 73, thereby improving the sealing performance of the connection between the connecting shaft 72 and the valve body 1 and preventing the liquid conveyed inside the valve body 1 from leaking out from below the handle 76. When the bottom end of the connecting shaft 72 drives the ball valve core 5 to rotate through the connecting block 75, the bottom of the ball valve core 5 can rotate through the rotating shaft 92 inside the auxiliary rotating assembly 9, reducing the adjustment resistance of the ball valve core 5 inside the ball valve. Furthermore, the ball valve core 5 is positioned and rotated up and down through the rotating shaft 92 inside the auxiliary rotating assembly 9 and the connecting shaft 72 inside the sealing handle 7, thereby improving the installation stability of the ball valve core 5 inside the valve body 1, resisting the impact force on the ball valve core 5 when the fluid inside the valve body 1 passes through the ball valve core 5, protecting the ball valve core 5, and extending the service life of the ball valve.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ball valve sealing structure, comprising a valve body (1), characterized in that: The valve body (1) has a ball groove (2) inside, and a ball valve core (5) is embedded inside the ball groove (2). The valve body (1) has an inlet (3) on one side and an outlet (4) on the other side. The ball valve core (5) is covered with a sealing sleeve (6). A through hole (8) is opened between the two sides of the ball valve core (5). A sealing handle (7) is installed on the top of the valve body (1). The bottom of the sealing handle (7) passes through the valve body (1) and the sealing sleeve (6) and extends to the top of the ball valve core (5). An auxiliary rotating component (9) is installed between the bottom of the ball valve core (5) and the bottom of the inner wall of the ball groove (2).

2. The ball valve sealing structure according to claim 1, characterized in that: One end of the through hole (8) is connected to one end of the inlet (3), and the other end of the through hole (8) is connected to one end of the outlet (4).

3. The ball valve sealing structure according to claim 1, characterized in that: The outer surface of the ball valve core (5) is tightly fitted to the inner wall of the ball groove (2) through the sealing sleeve (6), and the two ends of the through hole (8) extend to both sides of the sealing sleeve (6).

4. The ball valve sealing structure according to claim 1, characterized in that: The sealing handle (7) includes a locking block (71) and a mounting groove (73). The locking block (71) is embedded in the top of the ball valve core (5). A connecting shaft (72) is fixedly connected to the top of the locking block (71). The mounting groove (73) is opened inside the valve body (1) and located at the top of the ball groove (2). One end of the connecting shaft (72) passes through the sealing sleeve (6), the mounting groove (73) and the valve body (1) in sequence and extends to the top of the valve body (1). A connecting block (75) is embedded in one end of the connecting shaft (72). A handle (76) is fixedly connected to the top of the connecting block (75) and to one end of the connecting shaft (72). A long rod screw (77) passes through one side of the top of the handle (76). One end of the long rod screw (77) passes through the connecting block (75) and extends into the interior of the connecting shaft (72). A sealing ring (74) is fitted on the axial surface of the connecting shaft (72) and inside the mounting groove (73).

5. The ball valve sealing structure according to claim 4, characterized in that: The bottom of the mounting groove (73) is connected to the top of the ball groove (2), the connecting shaft (72) is rotatably connected to the valve body (1), and the bottom of the handle (76) is in contact with the top of the connecting shaft (72).

6. The ball valve sealing structure according to claim 4, characterized in that: A threaded hole is provided between the top and bottom of the handle (76) for threaded connection with a long rod screw (77).

7. The ball valve sealing structure according to claim 4, characterized in that: The connecting block (75) has a threaded hole between its top and bottom that is threaded to be connected to the long rod screw (77), and the connecting shaft (72) has a threaded hole inside that is threaded to be connected to the long rod screw (77).

8. The ball valve sealing structure according to claim 1, characterized in that: The auxiliary rotating assembly (9) includes a rotating groove (91) and a fixing block (93). The rotating groove (91) is opened inside the valve body (1) and located at the bottom of the ball groove (2). The fixing block (93) is embedded in the bottom of the ball valve core (5). The bottom of the ball valve core (5) is fixedly connected to a rotating shaft (92). The bottom end of the rotating shaft (92) passes through the sealing sleeve (6) and extends to the bottom of the inner wall of the rotating groove (91).

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