Double-eccentric semi-ball valve structure

Abstract

The utility model provides a double-eccentric semi-ball valve structure which comprises a valve body, the bottom of the valve body is detachably connected with a bottom plate, a sealing ring is fixed to an inner cavity of an opening in one side wall of the valve body, an eccentric rotating block is arranged in the inner cavity of the valve body, the tail end of the eccentric rotating block is rotationally connected with the bottom plate through a rotating shaft, one side wall of the eccentric rotating block is connected with a valve plate, and the valve plate is connected with a valve rod. An inserting groove is formed in one side wall of the eccentric rotating block, a matched movable block is inserted into an inner cavity of the inserting groove, the outer end of the movable block is fixedly connected with the valve plate, a threaded hole is formed in the inner end face of the movable block, the adjusting bolt movably penetrates through the eccentric rotating block and is inserted into the threaded hole, and the adjusting bolt is meshed with the threaded hole. The movable column can be driven to move by rotating the adjusting bolt, so that the valve plate can be driven to adjust the position, the position of the valve plate can be adjusted after the valve plate is abraded, automatic position covering is achieved, the sealing effect is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hemispherical valve technology, and in particular relates to a double eccentric hemispherical valve structure. Background Technology

[0002] The double eccentric hemispherical valve is an industrial valve with unique structural and performance advantages. The rotation center of the valve core is not concentric with the rotation axis. Through the double offset of the hemispherical centerline with the valve stem centerline and the valve seat centerline, a three-dimensional eccentric structure is formed.

[0003] In the actual use of existing double eccentric hemispherical valves, the valve plate fits against the sealing ring during the sealing process. Long-term opening and closing can easily cause wear on the valve plate, thus affecting the sealing effect. Currently, when the sealing effect is poor after wear, the valve plate needs to be replaced, resulting in high maintenance costs and inconvenience in adjusting the valve plate to achieve automatic replacement sealing after wear. Therefore, we propose a double eccentric hemispherical valve. Summary of the Invention

[0004] In view of this, the present invention aims to propose a double eccentric hemispherical valve structure to solve the technical problem that it is inconvenient to adjust the valve plate to achieve automatic replacement sealing after wear.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A double eccentric hemispherical valve structure includes a valve body, a base plate detachably connected to the bottom of the valve body, a sealing ring fixed in the inner cavity of one side wall opening of the valve body, an eccentric rotating block provided in the inner cavity of the valve body, the tail end of the eccentric rotating block being rotatably connected to the base plate via a rotating shaft, a valve plate being connected to one side wall of the eccentric rotating block, and an adjusting bolt. A slot is provided on one side wall of the eccentric rotating block, a matching movable block is inserted into the inner cavity of the slot, the outer end of the movable block is fixedly connected to the valve plate, a threaded hole is provided on the inner end face of the movable block, and the adjusting bolt movably passes through the eccentric rotating block and is inserted into the threaded hole, with the adjusting bolt engaging with the threaded hole.

[0007] It should be understood that the eccentric rotating block rotates, thereby driving the valve plate to rotate. When it rotates to the sealing ring, it can fit against the sealing ring to seal. At the same time, when it is necessary to open, the eccentric rotating block will drive the valve plate to one side to release and ensure the flow of liquid. When the valve plate wears after long-term use, rotating the adjusting bolt will drive the movable block to move, thereby adjusting the position of the valve plate and adjusting the fit between the valve plate and the sealing ring. There is no need to replace the valve plate, which helps to reduce maintenance costs.

[0008] Furthermore, a cover is provided on the inner arc surface of the eccentric rotating block corresponding to the adjusting bolt. An annular groove adapted to the end face of the cover is opened on the inner arc surface of the eccentric rotating block. A matching magnetic ring is fixedly installed in the inner cavity of the annular groove. An iron sheet is fixed on the end face of the cover. The cover is inserted into the annular groove. Both sides of the outer end face of the cover are provided with inclined surfaces.

[0009] It should be noted that the cover is attached to the inner arc surface of the eccentric rotating block by a magnetic ring, thereby protecting the end of the adjusting bolt. This helps to prevent liquid from corroding the end of the adjusting bolt and causing it to rust. At the same time, when the liquid impacts the cover after rotation, it will impact the inclined surface of the cover, thereby generating a certain thrust on the cover. This helps to increase the tightness of the cover pressing against the eccentric rotating block, and thus improves the sealing effect.

[0010] Furthermore, an annular plate is fixedly installed on the outer wall of the cover, and a rubber pad is fixedly installed on one side wall of the annular plate corresponding to the inner arc surface of the eccentric rotating block.

[0011] Furthermore, the end face of the adjusting bolt is provided with an internal hexagonal groove.

[0012] Furthermore, the movable block is a square column, and a piston ring adapted to the slot is fixedly connected to the inner end of the movable block. A spring is fixed to one side wall of the piston ring, and the outer end of the spring is fixedly connected to the end face of the inner cavity of the slot.

[0013] Specifically, after the adjusting bolt drives the movable block to adjust its position, the spring is in a compressed state, which generates a thrust on the movable block, thereby tightening the threads of the adjusting bolt and the internal threads of the threaded hole. This helps to prevent the adjusting bolt from rotating on its own. Furthermore, the piston rings enable sealing, which helps to prevent liquid from entering the inner cavity of the slot and thus prevents the liquid from corroding the adjusting bolt.

[0014] Furthermore, a valve stem is detachably fixedly connected to the top of the eccentric rotating block.

[0015] Furthermore, connecting pipes are fixed at the openings on both sides of the valve body, and flanges are fixedly connected to the outer ends of the connecting pipes.

[0016] Compared with the prior art, the double eccentric hemispherical valve structure of this utility model has the following beneficial effects:

[0017] The present invention discloses a double eccentric hemispherical valve structure, which can drive the movable column to move by rotating the adjusting bolt, thereby driving the valve plate to adjust its position. This allows the valve plate to adjust its position after wear, thus achieving automatic replacement, which helps to improve the sealing effect and reduce maintenance costs.

[0018] The present invention discloses a double eccentric hemispherical valve structure, wherein a cover is provided on the outside of the adjusting bolt, and the cover is attached to the inner arc surface of the eccentric rotating block by a magnetic ring, thereby protecting the end of the adjusting bolt and preventing liquid from corroding the end of the adjusting bolt. At the same time, when the liquid impacts the cover after rotation, it will impact the inclined surface of the cover, thereby generating a certain thrust on the cover, which helps to increase the tightness of the cover pressing on the eccentric rotating block, thereby improving the sealing effect and further preventing liquid from entering the cover and corroding the end of the adjusting bolt. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a double eccentric hemispherical valve according to an embodiment of the present utility model;

[0021] Figure 2 This is a partial separation structure diagram of a double eccentric hemispherical valve structure according to an embodiment of the present utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of section A in the middle;

[0023] Figure 4 This is a schematic diagram of a sealing assembly structure for a double eccentric hemispherical valve according to an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of a sealing assembly of a double eccentric hemispherical valve structure according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Valve body; 11. Base plate; 12. Connecting pipe; 13. Flange; 14. Sealing ring; 2. Eccentric rotating block; 21. Rotating shaft; 22. Valve stem; 23. Valve plate; 24. Annular groove; 25. Cover; 26. Ring plate; 3. Adjusting bolt; 31. Moving block; 32. Threaded hole; 33. Spring; 34. Piston ring. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] like Figure 1-5 As shown in the figure, as an embodiment, a double eccentric hemispherical valve structure includes a valve body 1, a bottom plate 11 detachably connected to the bottom of the valve body 1, a sealing ring 14 fixed in the inner cavity of the opening on one side wall of the valve body 1, an eccentric rotating block 2 provided in the inner cavity of the valve body 1, the tail end of the eccentric rotating block 2 being rotatably connected to the bottom plate 11 via a rotating shaft 21, and a valve plate 23 connected to one side wall of the eccentric rotating block 2.

[0032] Specifically, during use, the eccentric rotating block 2 rotates, which in turn drives the valve plate 23 to rotate. When it rotates to the sealing ring 14, it can fit against the sealing ring 14 to seal and block. At the same time, when it is necessary to open, the eccentric rotating block 2 will drive the valve plate 23 to rotate to one side, thereby releasing the liquid and ensuring the flow of liquid.

[0033] It also includes an adjusting bolt 3. A slot is provided on one side wall of the eccentric rotating block 2. A matching movable block 31 is inserted into the inner cavity of the slot. The outer end of the movable block 31 is fixedly connected to the valve plate 23. A threaded hole 32 is provided on the inner end face of the movable block 31. The adjusting bolt 3 moves through the eccentric rotating block 2 and is inserted into the threaded hole 32. The adjusting bolt 3 and the threaded hole 32 are engaged.

[0034] It should be understood that in actual use, when the valve plate 23 wears out after long-term use, the movable block 31 can be moved by rotating the adjusting bolt 3, thereby adjusting the position of the valve plate 23 and adjusting the fit between the valve plate 23 and the sealing ring 14. This eliminates the need to replace the valve plate 23, thus reducing maintenance costs.

[0035] like Figure 1-2 As shown in the figure, in one embodiment, connecting pipes 12 are fixed at the openings on both sides of the valve body 1, and flanges 13 are fixedly connected to the outer ends of the connecting pipes 12.

[0036] It should be understood that the flange 13 is designed to facilitate connection with pipes.

[0037] like Figure 1-2 As shown in the figure, in one embodiment, the top of the eccentric rotating block 2 is detachably fixedly connected to a valve stem 22. The valve stem 22 is provided so that the outer end of the valve stem 22 can be connected to the drive component, thereby facilitating the rotation of the valve stem 22, which in turn drives the eccentric rotating block 2 and the valve plate 23 to rotate.

[0038] like Figure 1 and 5 As shown in the figure, in one embodiment, the movable block 31 is a square column, and a piston ring 34 adapted to the slot is fixedly connected to the inner end of the movable block 31. A spring 33 is fixed to one side wall of the piston ring 34, and the outer end of the spring 33 is fixedly connected to the end face of the inner cavity of the slot.

[0039] It should be understood that after the adjusting bolt 3 drives the movable block 31 to adjust its position, the spring 33 is in a compressed state, which can generate a thrust on the movable block 31, thereby achieving tension of the thread of the adjusting bolt 3 and the internal thread of the threaded hole 22. This helps to prevent the adjusting bolt 3 from rotating on its own. Furthermore, the setting of the piston ring 34 enables sealing, which helps to prevent liquid from entering the inner cavity of the slot and thus helps to prevent liquid from corroding the adjusting bolt 3.

[0040] like Figure 1 and 2 As shown in the figure, in one embodiment, the end face of the adjusting bolt 3 is provided with an internal hexagonal groove. The internal hexagonal groove makes it convenient to operate the adjusting bolt 3 to rotate with a hexagonal wrench, which helps to improve the ease of operation.

[0041] like Figure 2-4 As shown in the figure, in one embodiment, a cover 25 is provided on the inner arc surface of the eccentric rotating block 2 corresponding to the adjusting bolt 3. An annular groove 24 adapted to the end face of the cover 25 is opened on the inner arc surface of the eccentric rotating block 2. A matching magnetic ring is fixedly installed in the inner cavity of the annular groove 24. An iron sheet is fixed on the end face of the cover 25. The cover 25 is inserted into the annular groove 24. Inclined surfaces are opened on both sides of the outer end face of the cover 25.

[0042] It should be understood that the cover 25 is attached to the inner arc surface of the eccentric rotating block 2 by means of a magnetic ring, thereby protecting the end of the adjusting bolt 3. This helps to prevent liquid from corroding the end of the adjusting bolt 3 and causing it to rust. At the same time, when the liquid impacts the cover 25 after rotation, it will impact the inclined surface of the cover 25, thereby forming a certain thrust on the cover 25. This helps to increase the tightness of the cover 25 on the eccentric rotating block 2, and thus helps to improve the sealing effect.

[0043] It is worth mentioning that an annular plate 26 is fixedly installed on the outer wall of the cover 25, and a rubber pad is fixedly installed on one side wall of the inner arc surface of the annular plate 26 corresponding to the eccentric rotating block 2.

[0044] It should be understood that after the cover 25 and the eccentric rotating block 2 are connected, the ring plate 26 can press against the inner wall of the eccentric rotating block 2, thereby pressing the rubber gasket and thus improving the sealing effect.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A double eccentric hemispherical valve structure, comprising a valve body (1), wherein a base plate (11) is detachably connected to the bottom of the valve body (1), a sealing ring (14) is fixed to the inner cavity of one side wall opening of the valve body (1), an eccentric rotating block (2) is provided in the inner cavity of the valve body (1), the tail end of the eccentric rotating block (2) is rotatably connected to the base plate (11) via a rotating shaft (21), and a valve plate (23) is connected to one side wall of the eccentric rotating block (2), characterized in that: It also includes an adjusting bolt (3), a slot is provided on one side wall of the eccentric rotating block (2), a matching movable block (31) is inserted into the inner cavity of the slot, the outer end of the movable block (31) is fixedly connected to the valve plate (23), a threaded hole (32) is provided on the inner end face of the movable block (31), the adjusting bolt (3) moves through the eccentric rotating block (2) and is inserted into the threaded hole (32), and the adjusting bolt (3) and the threaded hole (32) mesh.

2. The double eccentric hemispherical valve structure according to claim 1, characterized in that: The inner arc surface of the eccentric rotating block (2) is provided with a cover (25) corresponding to the adjusting bolt (3). The inner arc surface of the eccentric rotating block (2) is provided with an annular groove (24) that is adapted to the end face of the cover (25). A matching magnetic ring is fixedly installed in the inner cavity of the annular groove (24). An iron sheet is fixed on the end face of the cover (25). The cover (25) is inserted into the annular groove (24). Both sides of the outer end face of the cover (25) are provided with inclined surfaces.

3. The double eccentric hemispherical valve structure according to claim 2, characterized in that: A ring plate (26) is fixedly installed on the outer wall of the cover (25), and a rubber pad is fixedly installed on one side wall of the inner arc surface of the ring plate (26) corresponding to the eccentric rotating block (2).

4. The double eccentric hemispherical valve structure according to claim 1, characterized in that: The end face of the adjusting bolt (3) is provided with an internal hexagonal groove.

5. The double eccentric hemispherical valve structure according to claim 1, characterized in that: The movable block (31) is a square column. The inner end of the movable block (31) is fixedly connected to a piston ring (34) that is adapted to the slot. A spring (33) is fixed to one side wall of the piston ring (34). The outer end of the spring (33) is fixedly connected to the end face of the inner cavity of the slot.

6. The double eccentric hemispherical valve structure according to claim 1, characterized in that: The top of the eccentric rotating block (2) is detachably fixedly connected to a valve stem (22).

7. The double eccentric hemispherical valve structure according to claim 1, characterized in that: A connecting pipe (12) is fixed at the openings on both sides of the valve body (1), and a flange (13) is fixedly connected to the outer end of the connecting pipe (12).

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