Eccentric ball valve

Abstract

The utility model discloses an eccentric ball valve which comprises a connecting pipe, a ball valve seat is fixedly installed on the outer wall of the connecting pipe, an installation box is inserted into the top of the ball valve seat in a sliding mode, the top of the ball valve seat is rotationally connected with a second gear through a rotating shaft, and the top of the ball valve seat is rotationally connected with a valve rod in a penetrating mode. The bottom end of the valve rod penetrates and extends into the connecting pipe, the outer wall of the valve rod is fixedly sleeved with a first gear meshed with the second gear, the top end of the valve rod is fixedly connected with a rotating handle, and the bottom end of the valve rod is fixedly connected with a ball valve body. A rotating handle is rotated to directly drive a ball valve body to rotate so as to quickly circulate liquid in a connecting pipe, a cross rod is inserted into a cross hole to brake and fix the flow in the connecting pipe for the ball valve body, and a mounting box and a clamping plate are of detachable structures so that a first gear and a second gear can be overhauled conveniently; the sealing sleeve and the two sealing rings play a sealing role.

Description

Technical Field

[0001] The utility model relates to the field of eccentric ball valves, in particular to an eccentric ball valve. Background Art

[0002] The eccentric ball valve and flange gate valve are valves of the same type. The difference is that its closing piece is a sphere, which rotates around the center line of the valve body to achieve opening and closing. The ball valve is mainly used in pipelines to cut off, distribute and change the flow direction of the medium.

[0003] The utility model with authorization announcement number: CN207777672U provides an eccentric ball valve, including: a valve ball, a valve body, a first valve channel, a second valve channel, a third valve channel and a valve stem. When the eccentric ball valve is in an open state, the first valve channel, the third valve channel and the second valve channel are in a connected state, and the medium can flow, thereby avoiding the medium scouring and erosion of the valve stem; when the eccentric ball valve is in a closed state, the first sealing body and the second sealing body on the valve body are respectively sealed with the first valve channel and the second valve channel, thereby realizing two-way sealing with high sealing performance.

[0004] The rotating structure design adopted by the valve stem of the above utility model patent cannot quickly adjust the eccentric ball valve, and is the same as the valve stem rotation principle in the prior art, which is a relatively laborious rotating structure design. Therefore, the technical personnel in this field provide an eccentric ball valve to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide an eccentric ball valve to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an eccentric ball valve, comprising a connecting pipe, a ball valve seat is fixedly installed on the outer wall of the connecting pipe, a mounting box is slidably inserted into the top of the ball valve seat, the top of the ball valve seat is rotatably connected to the second gear via a rotating shaft, the top of the ball valve seat is rotatably connected to a valve stem, and the bottom end of the valve stem extends into the connecting pipe, a first gear meshing with the second gear is fixedly sleeved on the outer wall of the valve stem, a rotating handle is fixedly connected to the top of the valve stem, and a ball valve body is fixedly connected to the bottom end of the valve stem, and the outer wall of the ball valve body and the inner wall of the connecting pipe are sealed and fitted.

[0007] As a further solution of the utility model: a mounting hole is opened on the top of the mounting box, and the valve stem passes through the mounting hole.

[0008] As a further solution of the utility model: a cross hole is provided on the top of the second gear, a clamping hole is provided on the top of the installation box, a clamping rod is inserted through the clamping hole, and a cross rod plugged into the cross hole is fixedly connected to the bottom end of the clamping rod.

[0009] As a further solution of the utility model: a clamping plate is sealed and inserted into an opening on one side of the installation box, and the clamping plate is clamped with the installation hole.

[0010] As a further solution of the utility model: sealing rings are embedded in the openings at both ends of the connecting pipe, and the ball valve seat is located between the two sealing rings.

[0011] As a further solution of the utility model: a sealing sleeve is fixedly sleeved on the outer wall of the ball valve body, and the outer wall of the sealing sleeve is in contact with the inner wall of the ball valve seat.

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

[0013] 1. When the handle is turned, the valve stem can be driven to rotate. When the valve stem rotates, the first gear and the ball valve body will be driven to rotate simultaneously to open the connecting pipe to allow the liquid in the connecting pipe to circulate. When the clamping rod is held and the cross rod is inserted into the cross hole, the second gear can be braked so that the valve stem cannot drive the ball valve body to rotate, thereby fixing the rotation angle of the ball valve body to fix the flow in the connecting pipe. The installation box can be slid and disassembled in the opposite direction of the installation hole opening, and the clamping plate can be pulled out from the opening of the installation box for removal. When the installation box and the clamping plate are removed, the first gear and the second gear can be inspected. A sealing sleeve is provided on the outer wall of the ball valve body to increase the sealing performance of the ball valve body, and the sealing rings embedded on both sides of the connecting pipe play a sealing role.

[0014] The utility model is easy to use. Rotating the handle can directly drive the ball valve body to rotate to quickly circulate the liquid in the connecting pipe. Inserting a cross rod into the cross hole can brake the ball valve body to fix the flow in the connecting pipe. The mounting box and the clamping plate are both detachable structures, which facilitates the maintenance of the first gear and the second gear. The sealing sleeve and the two sealing rings all play a sealing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional explosion schematic diagram of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the ball valve body of the utility model;

[0018] Figure 4 It is a partial cross-sectional schematic diagram of the utility model.

[0019] In the figure: 1. ball valve seat; 2. connecting pipe; 3. sealing ring; 4. installation box; 5. turning handle; 6. valve stem; 7. first gear; 8. cross hole; 9. second gear; 10. clamping plate; 11. clamping rod; 12. cross rod; 13. installation hole; 14. clamping hole; 15. ball valve body; 16. sealing sleeve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 In the embodiment of the utility model, an eccentric ball valve comprises a connecting pipe 2, a ball valve seat 1 is fixedly installed on the outer wall of the connecting pipe 2, a mounting box 4 is slidably inserted on the top of the ball valve seat 1, the top of the ball valve seat 1 is rotatably connected to the second gear 9 through a rotating shaft, the top of the ball valve seat 1 is rotatably connected to the valve stem 6, and the bottom end of the valve stem 6 extends into the connecting pipe 2, a first gear 7 meshing with the second gear 9 is fixedly sleeved on the outer wall of the valve stem 6, a rotating handle 5 is fixedly connected to the top of the valve stem 6, and a ball valve body 15 is fixedly connected to the bottom end of the valve stem 6, the outer wall of the ball valve body 15 and the inner wall of the connecting pipe 2 are sealed and fitted, and the rotating handle 5 can drive the valve stem 6 to rotate when the rotating handle 5 is rotated, and when the valve stem 6 rotates, the first gear 7 and the ball valve body 15 will be driven to rotate at the same time to open the connecting pipe 2 to allow the liquid in the connecting pipe 2 to flow.

[0022] In this embodiment, a mounting hole 13 is formed on the top of the mounting box 4 , and the valve stem 6 passes through the mounting hole 13 .

[0023] In this embodiment, a cross hole 8 is provided at the top of the second gear 9, and a clamping hole 14 is provided at the top of the installation box 4. A clamping rod 11 is inserted through the clamping hole 14, and the bottom end of the clamping rod 11 is fixedly connected to a cross rod 12 plugged into the cross hole 8. When the clamping rod 11 is held and the cross rod 12 is inserted into the cross hole 8, the second gear 9 can be braked so that the valve stem 6 cannot drive the ball valve body 15 to rotate, thereby fixing the rotation angle of the ball valve body 15 and fixing the flow rate in the connecting pipe 2.

[0024] In this embodiment, a card plate 10 is sealed and inserted at an opening on one side of the installation box 4, and the card plate 10 is snap-fitted with the installation hole 13. The installation box 4 can be slid and disassembled in the opposite direction of the opening of the installation hole 13, and the card plate 10 can be pulled out from the opening of the installation box 4 for removal. When the installation box 4 and the card plate 10 are removed, the first gear 7 and the second gear 9 can be inspected.

[0025] In this embodiment, sealing rings 3 are embedded at both end openings of the connecting pipe 2, the ball valve seat 1 is located between the two sealing rings 3, and the sealing rings 3 embedded on both sides of the connecting pipe 2 play a sealing role.

[0026] In this embodiment, a sealing sleeve 16 is fixedly sleeved on the outer wall of the ball valve body 15 to increase the sealing performance of the ball valve body 15 , and the outer wall of the sealing sleeve 16 fits the inner wall of the ball valve seat 1 .

[0027] The working principle of the utility model is: when the handle 5 is rotated, the valve stem 6 can be driven to rotate, and when the valve stem 6 rotates, the first gear 7 and the ball valve body 15 will be driven to rotate simultaneously to open the connecting pipe 2 to allow the liquid in the connecting pipe 2 to circulate, and when the clamping rod 11 is held and the cross rod 12 is inserted into the cross hole 8, the second gear 9 can be braked so that the valve stem 6 cannot drive the ball valve body 15 to rotate, thereby fixing the rotation angle of the ball valve body 15 to fix the flow in the connecting pipe 2, the installation box 4 can be slid and disassembled from the opposite side of the opening of the installation hole 13, and the clamping plate 10 can be pulled out from the opening of the installation box 4 for removal, and the first gear 7 and the second gear 9 can be inspected after the installation box 4 and the clamping plate 10 are removed, and a sealing sleeve 16 is provided on the outer wall of the ball valve body 15 to increase the sealing performance of the ball valve body 15, and the sealing rings 3 embedded on both sides of the connecting pipe 2 play a sealing role.

[0028] 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. An eccentric ball valve, comprising a connecting pipe (2), characterized in that: A ball valve seat (1) is fixedly mounted on the outer wall of the connecting pipe (2); a mounting box (4) is slidably inserted into the top of the ball valve seat (1); the top of the ball valve seat (1) is rotatably connected to a second gear (9) via a rotating shaft; a valve stem (6) is rotatably connected to the top of the ball valve seat (1); and the bottom end of the valve stem (6) extends into the connecting pipe (2); a first gear (7) meshing with the second gear (9) is fixedly sleeved on the outer wall of the valve stem (6); a rotating handle (5) is fixedly connected to the top of the valve stem (6); a ball valve body (15) is fixedly connected to the bottom end of the valve stem (6); and the outer wall of the ball valve body (15) is sealed and fitted with the inner wall of the connecting pipe (2).

2. An eccentric ball valve according to claim 1, characterized in that: A mounting hole (13) is provided on the top of the mounting box (4), and the valve stem (6) passes through the mounting hole (13).

3. The eccentric ball valve according to claim 1, characterized in that: A cross hole (8) is provided on the top of the second gear (9), a clamping hole (14) is provided on the top of the installation box (4), a clamping rod (11) is inserted through the clamping hole (14), and a cross rod (12) is fixedly connected to the bottom end of the clamping rod (11) and is plugged into the cross hole (8).

4. The eccentric ball valve according to claim 1, characterized in that: A clamping plate (10) is sealed and inserted into an opening on one side of the installation box (4), and the clamping plate (10) is clamped with the installation hole (13).

5. The eccentric ball valve according to claim 1, characterized in that: Sealing rings (3) are embedded at both end openings of the connecting pipe (2), and the ball valve seat (1) is located between the two sealing rings (3).

6. An eccentric ball valve according to claim 1, characterized in that: A sealing sleeve (16) is fixedly sleeved on the outer wall of the ball valve body (15), and the outer wall of the sealing sleeve (16) is in contact with the inner wall of the ball valve seat (1).

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