Adjustable bidirectional pressure-bearing eccentric half ball valve

Abstract

The utility model belongs to the technical field of ball valves, and particularly relates to an adjustable bidirectional pressure-bearing eccentric semi-ball valve which comprises a valve body, two ends of the valve body are respectively connected with a liquid inlet pipe and a liquid outlet pipe, the upper end of an eccentric shaft penetrates out of the valve body to be connected with a turbine, and a driving main gear is arranged on the eccentric shaft. The liquid inlet pipe and the liquid outlet pipe are provided with pressure adjusting mechanisms connected with the driving main gear in a meshed mode, the liquid inlet pipe and the liquid outlet pipe are connected with a pressure pump through a pressure pipe, and the bottom of the liquid inlet pipe and the bottom of the liquid outlet pipe are connected with pressure release valves through pressure release pipes. The pressure pump and the pressure release valve are used for adjusting the internal pressure of the valve body to be the same as the internal pressure of the liquid inlet pipe and the liquid outlet pipe, the turbine transmission rod is rotated to drive the eccentric shaft to rotate, the ball body and the pressure adjusting valve are synchronously driven to rotate by driving the main gear and the driven gear to be meshed, and synchronous opening and closing of the valve body and the liquid inlet pipe and the liquid outlet pipe can be rapidly achieved. The ball body is prevented from deflecting; and when liquid enters the valve body, the eccentric shaft and the ball body rotate more stably and safely, and convenience is brought to rotating operation of maintenance personnel.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and particularly relates to an adjustable two-way pressure-bearing eccentric semi-spherical valve. Background Technique

[0002] The eccentric semi-spherical valve is a relatively new type of ball valve category, which has some unique advantages in its own structure, such as no friction during opening and closing, the seal is not easily worn, and the opening and closing torque is small. This can reduce the specification of the equipped actuator. With a multi-turn electric actuator, the adjustment and strict cut-off of the medium can be realized. It is widely applicable to working conditions that require strict cut-off in petroleum, chemical industry, urban water supply and drainage, etc.

[0003] However, when the existing eccentric semi-spherical valves on the market are actually used, no pressure regulating and adjusting mechanism is provided inside. This makes there a high pressure difference on both sides of the sphere inside the eccentric semi-spherical valve during actual use. Such a phenomenon makes the sphere inside it not only easily deflect during rotation adjustment, but also requires a large amount of labor for maintenance personnel to rotate.

[0004] Therefore, the technical personnel in this field have provided an eccentric semi-spherical valve to solve the problems raised in the above background technique. Summary of the Invention

[0005] To solve the problems raised in the above background technique. The utility model provides an adjustable two-way pressure-bearing eccentric semi-spherical valve, which uses a pressure pump and a pressure relief valve to adjust the internal pressure of the valve body to be the same as the pressure inside the connection of the liquid inlet pipe and the liquid outlet pipe. Rotating the turbine drive rod drives the eccentric shaft to rotate through the turbine. By the meshing of the driving main gear and the driven gear, the rotation of the sphere and the pressure regulating valve can be driven synchronously, and the valve body, the liquid inlet pipe and the liquid outlet pipe can be quickly opened and closed synchronously, preventing the sphere from deflecting; making the rotation of the eccentric shaft and the sphere more stable and safe when the liquid enters the valve body interior, and bringing convenience to the rotation operation of maintenance personnel.

[0006] To achieve the above object, the utility model provides the following technical solution: an adjustable two-way pressure-bearing eccentric semi-spherical valve, including a valve body, the two ends of the valve body are respectively connected with a liquid inlet pipe and a liquid outlet pipe, a sphere is arranged inside the valve body through an eccentric shaft and a lower shaft, the upper end of the eccentric shaft passes through the valve body and is connected with a turbine, a driving main gear is arranged on the eccentric shaft, a pressure regulating mechanism meshingly connected with the driving main gear is arranged on the liquid inlet pipe and the liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are connected with a pressure pump through a pressure pipe, and a pressure relief valve is connected to the bottom of the liquid inlet pipe and the liquid outlet pipe through a pressure relief pipe.

[0007] As a preferred solution, the pressure regulating mechanism includes a pressure regulating valve, a pressure regulating valve rod and a driven gear. The pressure regulating valve is arranged inside the liquid inlet pipe and the liquid outlet pipe. A valve rod cover is provided at the tops of the liquid inlet pipe and the liquid outlet pipe. The lower end of the pressure regulating valve rod passes through the valve rod cover and is connected to the pressure regulating valve. The upper end of the pressure regulating valve rod is provided with a driven gear that is meshed and connected with the driving main gear through a positioning column.

[0008] As a preferred solution, the pressurizing pipe and the pressure relief pipe are arranged between the pressure regulating valve and the valve body.

[0009] As a preferred solution, a driving box is provided above the valve body. Inside the upper end of the driving box, there is a turbine transmission rod that is connected to the turbine for driving; at the tops of both ends of the driving box, there are locking members that are threadedly connected to the top end of the pressure regulating valve rod.

[0010] As a preferred solution, connection flanges are provided at the outer ends of the liquid inlet pipe and the liquid outlet pipe.

[0011] As a preferred solution, a valve seat is provided at the bottom of the valve body.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model uses a pressure pump to inject air pressure into the space between the valve body, the liquid inlet pipe and the liquid outlet pipe, so that the pressure inside the valve body is the same as the pressure inside the connection of the liquid inlet pipe and the liquid outlet pipe. Rotating the turbine transmission rod drives the eccentric shaft to rotate through the turbine, and drives the sphere inside the valve body to rotate. At the same time, the rotation of the eccentric shaft drives the pressure regulating valve inside the liquid inlet pipe and the liquid outlet pipe to rotate and open through the meshing of the driving main gear and the driven gear. The liquid enters the valve body from the liquid inlet pipe and then is discharged along the liquid outlet pipe.

[0014] By increasing the internal air pressure at the connection between the liquid inlet pipe and the liquid outlet pipe and the valve body, the pressures at both ends inside the valve body are balanced, making the rotation of the eccentric shaft and the sphere more stable and safe when the liquid enters the inside of the valve body. When the gas in the liquid inlet pipe and the liquid outlet pipe is excessive and the pressure is greater than the pressure inside the valve body, the pressure relief valve is opened, and the gas will be discharged from the pressure relief pipe, thereby realizing the two-way pressure regulation operation of the valve body, bringing convenience to the maintenance personnel for rotation operation; preventing the sphere from deflecting.

[0015] Through the meshing of the driving main gear and the driven gear, the rotation of the sphere and the pressure regulating valve can be driven synchronously, quickly realizing the synchronous opening and closing of the valve body, the liquid inlet pipe and the liquid outlet pipe; moreover, the upper end of the pressure regulating valve rod and the driving box can be locked and limited by the locking member to prevent the pressure regulating valve rod from rotating after switching. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the driving box after being opened in the present invention;

[0018] Figure 2 is Figure 1 the front view structural diagram of;

[0019] Figure 3 is Figure 1 the top view structural diagram of;

[0020] Figure 4 is Figure 3 the isometric sectional view of the A-A plane in;

[0021] Figure 5 It is a schematic overall structural diagram of the present invention.

[0022] Explanation of the reference numerals in the drawings:

[0023] 1. Valve body; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Eccentric shaft; 5. Driving main gear; 6. Turbine; 7. Turbine transmission rod; 8. Driven gear; 9. Pressure regulating valve; 10. Locking member; 11. Valve stem cover; 12. Pressure pump; 13. Pressure pipe; 14. Pressure relief pipe; 15. Pressure relief valve; 16. Positioning column; 17. Valve seat; 18. Connecting flange; 19. Lower shaft; 20. Driving box; 21. Sphere. Detailed implementation manners

[0024] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0025] All the features disclosed in this specification, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0026] Any feature disclosed in this specification (including any appended claims, abstract and drawings) may be replaced by other equivalent or alternative features with a similar purpose, unless specifically stated. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0027] Embodiment 1

[0028] Please refer to Figures 1-5 , the present utility model provides the following technical solution: an adjustable two-way pressure-bearing eccentric semi-spherical valve, which includes a valve body 1. The two ends of the valve body 1 are respectively connected to a liquid inlet pipe 2 and a liquid outlet pipe 3. Inside the valve body 1, a sphere 21 is provided through an eccentric shaft 4 and a lower shaft 19. The upper end of the eccentric shaft 4 passes through the valve body 1 and is connected to a turbine 6. A driving main gear 5 is provided on the eccentric shaft 4. A pressure regulating mechanism that is meshed and connected with the driving main gear 5 is provided on the liquid inlet pipe 2 and the liquid outlet pipe 3. The liquid inlet pipe 2 and the liquid outlet pipe 3 are connected to a pressure pump 12 through a pressure pipe 13. The bottoms of the liquid inlet pipe 2 and the liquid outlet pipe 3 are connected to a pressure relief valve 15 through a pressure relief pipe 14; In the embodiment, the pressure pump 12 injects air pressure into the space between the valve body 1, the liquid inlet pipe 2 and the liquid outlet pipe 3 through the pressure pipe 13, so that the pressure inside the valve body 1 is the same as the pressure inside the parts connected to the liquid inlet pipe 2 and the liquid outlet pipe 3. At this time, rotating the turbine drive rod 7 drives the eccentric shaft 4 to rotate through the turbine 6. When the eccentric shaft 4 rotates, it drives the sphere 21 inside the valve body 1 to rotate. At the same time, the rotation of the eccentric shaft 4 drives the pressure regulating valve 9 inside the liquid inlet pipe 2 and the liquid outlet pipe 3 to rotate and open through the meshing of the driving main gear 5 and the driven gear 8. The liquid enters the valve body 1 from the liquid inlet pipe 2 and then is discharged along the liquid outlet pipe 3;

[0029] By increasing the internal air pressure at the connection between the liquid inlet pipe 2 and the liquid outlet pipe 3 and the inside of the valve body 1, the pressures at both ends inside the valve body 1 are balanced, so that the rotation of the eccentric shaft 4 and the sphere 21 is more stable and safer when the liquid enters the inside of the valve body 1. When the gas inside the liquid inlet pipe 2 and the liquid outlet pipe 3 is excessive and the pressure is greater than the pressure inside the valve body 1, the pressure relief valve 15 is opened, and the gas will be discharged from the pressure relief pipe 14, thereby realizing the two-way pressure regulation operation of the valve body 1.

[0030] In this embodiment, the pressure regulating mechanism includes a pressure regulating valve 9, a pressure regulating valve rod, and a driven gear 8. The pressure regulating valve 9 is disposed inside the liquid inlet pipe 2 and the liquid outlet pipe 3. A valve rod cover 11 is provided at the tops of the liquid inlet pipe 2 and the liquid outlet pipe 3. The lower end of the pressure regulating valve rod passes through the valve rod cover 11 and is connected to the pressure regulating valve 9. The upper end of the pressure regulating valve rod is provided with a driven gear 8 that is engaged with the driving main gear 5 through a positioning column 16. Above the valve body 1, there is a driving box 20. Inside the upper end of the driving box 20, there is a turbine transmission rod 7 that is drivingly connected to the turbine 6. At the tops of both ends of the driving box 20, there are locking members 10 that are threadedly connected to the top end of the pressure regulating valve rod. When the turbine transmission rod 7 is rotated, the eccentric shaft 4 is driven to rotate by the turbine 6. When the eccentric shaft 4 rotates, the sphere 21 inside the valve body 1 is driven to rotate. At the same time, when the eccentric shaft 4 rotates, the pressure regulating valve 9 inside the liquid inlet pipe 2 and the liquid outlet pipe 3 is driven to rotate and open through the engagement of the driving main gear 5 and the driven gear 8. The liquid enters the valve body 1 from the liquid inlet pipe 2 and then is discharged along the liquid outlet pipe 3. Through the engagement of the driving main gear 5 and the driven gear 8, the rotation of the sphere 21 and the pressure regulating valve 9 can be synchronously driven, and the opening and closing of the valve body 1, the liquid inlet pipe 2, and the liquid outlet pipe 3 can be quickly realized. Moreover, the upper end of the pressure regulating valve rod and the driving box 20 can be locked and position-fixed through the locking member 10 to prevent the pressure regulating valve rod from rotating after the switch is turned on and off.

[0031] In this embodiment, the pressurizing pipe 13 and the pressure relief pipe 14 are disposed between the pressure regulating valve 9 and the valve body 1.

[0032] In this embodiment, connection flanges 18 are provided at the outer ends of the liquid inlet pipe 2 and the liquid outlet pipe 3.

[0033] In this embodiment, a valve seat 17 is provided at the bottom of the valve body 1.

[0034] The working principle and usage process of the present utility model: When the present utility model is in use, the staff first injects air pressure into the space between the valve body 1, the liquid inlet pipe 2, and the liquid outlet pipe 3 through the pressurizing pump 12 via the pressurizing pipe 13, so that the pressure inside the valve body 1 is the same as the pressure inside the parts connected to the liquid inlet pipe 2 and the liquid outlet pipe 3. At this time, the turbine transmission rod 7 is rotated to drive the eccentric shaft 4 to rotate through the turbine 6. When the eccentric shaft 4 rotates, the sphere 21 inside the valve body 1 is driven to rotate. At the same time, when the eccentric shaft 4 rotates, the pressure regulating valve 9 inside the liquid inlet pipe 2 and the liquid outlet pipe 3 is driven to rotate and open through the engagement of the driving main gear 5 and the driven gear 8. The liquid enters the valve body 1 from the liquid inlet pipe 2 and then is discharged along the liquid outlet pipe 3.

[0035] By increasing the internal air pressure at the connection between the liquid inlet pipe 2 and the liquid outlet pipe 3 and the valve body 1, the pressures at both ends inside the valve body 1 are balanced, so that the rotation of the eccentric shaft 4 and the sphere 21 is more stable and safer when the liquid enters the inside of the valve body 1. When there is too much gas inside the liquid inlet pipe 2 and the liquid outlet pipe 3, resulting in the pressure being greater than the pressure inside the valve body 1, the pressure relief valve 15 is opened, and the gas will be discharged from the pressure relief pipe 14, thereby realizing the two-way pressure regulation operation of the valve body 1.

[0036] By driving the main gear 5 and the driven gear 8 to mesh, the rotation of the sphere 21 and the pressure regulating valve 9 can be synchronously driven, and the synchronous opening and closing of the valve body 1, the liquid inlet pipe 2 and the liquid outlet pipe 3 can be quickly realized; moreover, the upper end of the pressure regulating valve rod and the driving box 20 can be locked and limited by the locking member 10 to prevent the pressure regulating valve rod from rotating after the switch is turned on.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable two-way pressure-bearing eccentric semi-spherical valve, comprising a valve body (1), with a liquid inlet pipe (2) and a liquid outlet pipe (3) respectively connected to both ends of the valve body (1), and a sphere (21) is arranged inside the valve body (1) and connected through an eccentric shaft (4) and a lower shaft (19), characterized in that: The upper end of the eccentric shaft (4) passes through the valve body (1) and is connected with a turbine (6). A driving main gear (5) is arranged on the eccentric shaft (4). A pressure regulating mechanism engaged with the driving main gear (5) is arranged on the liquid inlet pipe (2) and the liquid outlet pipe (3). The liquid inlet pipe (2) and the liquid outlet pipe (3) are connected with a pressure pump (12) through a pressure pipe (13). The bottoms of the liquid inlet pipe (2) and the liquid outlet pipe (3) are connected with a pressure relief valve (15) through a pressure relief pipe (14).

2. The adjustable two-way pressure-bearing eccentric semi-spherical valve according to claim 1, wherein: The pressure regulating mechanism includes a pressure regulating valve (9), a pressure regulating valve rod and a driven gear (8). The pressure regulating valve (9) is arranged inside the liquid inlet pipe (2) and the liquid outlet pipe (3). A valve rod cover (11) is arranged at the tops of the liquid inlet pipe (2) and the liquid outlet pipe (3). The lower end of the pressure regulating valve rod passes through the valve rod cover (11) and is connected with the pressure regulating valve (9). The upper end of the pressure regulating valve rod is provided with a driven gear (8) engaged with the driving main gear (5) through a positioning column (16).

3. The adjustable two-way pressure-bearing eccentric semi-spherical valve according to claim 1, characterized in that: The pressure pipe (13) and the pressure relief pipe (14) are arranged between the pressure regulating valve (9) and the valve body (1).

4. The adjustable two-way pressure-bearing eccentric semi-spherical valve according to claim 1, wherein: A driving box (20) is arranged above the valve body (1). A turbine transmission rod (7) drivenly connected with the turbine (6) is arranged inside the upper end of the driving box (20). Locking pieces (10) threadedly connected with the top ends of the pressure regulating valve rods are arranged at the tops of both ends of the driving box (20).

5. The adjustable two-way pressure-bearing eccentric semi-spherical valve according to claim 1, characterized in that: Connecting flanges (18) are arranged at the outer ends of the liquid inlet pipe (2) and the liquid outlet pipe (3).

6. The adjustable two-way pressure-bearing eccentric semi-spherical valve according to claim 1, wherein: A valve seat (17) is arranged at the bottom of the valve body (1).

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