Triple-eccentric hard-seal anti-caking coke butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a triple-eccentric hard-seal anti-caking coke butterfly valve, which comprises a valve body, a liquid inlet pipe is communicated and mounted at the front end of the valve body, a liquid discharge pipe is communicated and mounted at the rear end of the valve body, the liquid inlet pipe adopts a trumpet-shaped structural design, and the liquid discharge pipe is communicated and mounted at the rear end of the valve body. The size of the rear end of the liquid inlet pipe is smaller than that of the front end of the liquid inlet pipe, and the rear end of the liquid inlet pipe communicates with the front end of the valve body; the liquid discharging pipe is designed to be of a cylindrical structure, and the pipe diameter of the liquid discharging pipe is matched with the size of the rear end of the liquid inlet pipe. The circle centers of the valve body, the liquid inlet pipe and the liquid outlet pipe are located on the same axis, so that fluid can be effectively guided to flow, retention of the fluid in the valve is reduced, and the risk of scaling is reduced. And the fluidity of fluid is enhanced, particulate matter attached to the valve seat and the valve plate can be removed easily, and then the problem that in the prior art, scaling is likely to occur on a butterfly plate of a device, and consequently the butterfly plate is inconvenient to open and close is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a three-eccentric hard-sealed anti-scaling coke butterfly valve. Background Art

[0002] The three-eccentric butterfly valve is a specially designed butterfly valve. The design of the eccentric shaft minimizes the contact between the valve plate and the valve seat during the opening and closing processes, thereby reducing the possibility of wear and leakage.

[0003] After a large number of searches, the publication number is CN205780924U, which discloses a three-eccentric butterfly valve. Its energy storage sealing ring ensures that particulate matter does not enter the bearing, preventing jamming between the valve stem and the bearing, and at the same time ensuring easy opening of the butterfly plate and extending the service life.

[0004] However, in the existing technology, when the valve is in use, once scaling appears on the butterfly plate, it will cause difficulties in opening and closing the butterfly valve. Therefore, a three-eccentric hard-sealed anti-scaling coke butterfly valve is needed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a three-eccentric hard-sealed anti-scaling coke butterfly valve, which has the advantage of avoiding inconvenience in opening and closing due to scaling when the butterfly valve is in use, and solves the problem that scaling easily appears on the butterfly plate of the device in the existing technology, resulting in inconvenience in opening and closing the butterfly plate.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A three-eccentric hard-sealed anti-scaling coke butterfly valve, including a valve body. A liquid inlet pipe is connected and installed at the front end of the valve body, and a liquid discharge pipe is connected and installed at the rear end of the valve body. The liquid inlet pipe is designed with a flared structure, and the size of the rear end of the liquid inlet pipe is smaller than that of the front end of the liquid inlet pipe. The rear end of the liquid inlet pipe is connected and installed with the front end of the valve body;

[0007] The liquid discharge pipe is designed with a cylindrical structure, and the pipe diameter of the liquid discharge pipe matches the size of the rear end of the liquid inlet pipe;

[0008] The centers of the valve body, the liquid inlet pipe, and the liquid discharge pipe are located on the same axis.

[0009] Preferably, the valve body includes a valve body body. A sealing ring is fixedly installed on the inner side of the front end of the valve body body through mounting screws. A valve stem passes through the inner side of the valve body, and a valve plate is fixedly installed on the valve stem. In the design, the valve body is composed of a valve body body. A sealing ring is fixed on the inner side of the front end of the valve body body through mounting screws. A valve stem passing through is provided on the inner side of the valve body, and a valve plate is fixedly connected to the valve stem. This design ensures the sealing performance of the valve and the structural stability, and at the same time facilitates the maintenance and replacement of the sealing components.

[0010] Preferably, a sealing gasket is clamped and installed on the side of the back of the sealing ring opposite to the valve body, and the inner diameter dimension of the sealing gasket matches the outer diameter dimension of the valve plate. In the design, a sealing gasket is clamped and installed on the side of the back of the sealing ring opposite to the valve body, and the inner diameter dimension of the sealing gasket matches the outer diameter dimension of the valve plate. Such a design improves the sealing performance of the valve, ensures reliable operation under high pressure and corrosive media, and reduces the potential leakage risk.

[0011] Preferably, the bottom end of the valve stem passes through the valve body and a second sealing member is rotatably installed, a handwheel is fixedly installed at the top of the valve stem, and a first sealing member is rotatably installed on the valve stem below the handwheel. In the design, the bottom end of the valve stem passes through the valve body and a second sealing member is rotatably installed, a handwheel is fixedly installed at the top of the valve stem, and a first sealing member is rotatably installed on the valve stem below the handwheel. This multi-stage sealing design enhances the sealing effect of the valve, prevents the leakage of the medium, and at the same time facilitates the opening and closing operations of the valve.

[0012] Preferably, the first sealing member is fixedly installed at the top of the valve body, and the second sealing member is fixedly installed at the bottom end of the valve body. In the design, the first sealing member is fixedly installed at the top of the valve body, and the second sealing member is fixedly installed at the bottom end of the valve body. This up-and-down sealing design provides double protection, ensures the sealing performance of the valve under various working conditions, and extends the service life of the valve.

[0013] Preferably, the outer diameter dimension of the valve plate matches the inner diameter dimension of the sealing ring, the valve plate is rotatably installed at the front end inside the valve body, and the outer side of the valve plate contacts the inner side of the sealing gasket but is not fixedly connected. In the design, the outer diameter dimension of the valve plate matches the inner diameter dimension of the sealing ring, the valve plate is rotatably installed at the front end inside the valve body, and the outer side of the valve plate contacts the inner side of the sealing gasket but is not fixedly connected. This design allows the valve plate to move smoothly during the opening and closing processes, reduces friction and wear, and improves the durability and operating flexibility of the valve.

[0014] Preferably, the opposite sides of the liquid inlet pipe and the liquid discharge pipe are respectively fixedly connected to the valve body through mounting bolts. In the design, the opposite sides of the liquid inlet pipe and the liquid discharge pipe are respectively fixedly connected to the valve body through mounting bolts. This fixing method ensures the tight connection between the pipeline and the valve body, prevents the leakage of the working medium under high pressure, and at the same time facilitates the installation and maintenance of the pipeline.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The utility model adopts a triple eccentric design. The contact between the sealing surface of the valve plate and the valve seat is achieved through torque, rather than relying on the elastic deformation of the valve seat. This design ensures that there is almost no friction between the sealing surfaces when the valve is opened and closed, thereby reducing the possibility of wear and scaling. The inlet pipe is designed with a flared structure, which can effectively guide the fluid flow, reduce the retention of fluid inside the valve, and thus reduce the risk of scaling. The enhanced fluidity of the fluid helps to remove the particulate matter attached to the valve seat and valve plate. The valve adopts a multi-level sealing structure, and different sealing materials can be selected according to the working conditions to ensure good sealing performance in various media and temperatures. This design not only improves the sealing effect but also reduces the scaling problem caused by poor sealing. The design of the valve makes each component easy to disassemble and maintain. Users can regularly check and clean the inside of the valve to further reduce the risk of scaling. In summary, through optimized design and material selection, this triple eccentric hard-sealing anti-scaling butterfly valve significantly improves the reliability in complex working conditions and avoids the problem of inconvenient opening and closing caused by scaling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the utility model;

[0018] Figure 2 is a structural schematic diagram of the valve body connection of the utility model;

[0019] Figure 3 is a structural schematic diagram of the valve body of the utility model;

[0020] Figure 4 is a structural schematic diagram of the valve stem connection of the utility model.

[0021] In the figure: 1. Valve body; 11. Valve body; 12. Installation bolt; 13. Valve stem; 131. Handwheel; 132. First seal; 133. Second seal; 14. Sealing ring; 141. Installation screw; 142. Sealing gasket; 15. Valve plate; 2. Inlet pipe; 3. Drain pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0023] Embodiment 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, an embodiment provided by the utility model is a three-eccentric hard-sealed anti-scaling coke butterfly valve, which includes a valve body 1. A liquid inlet pipe 2 is connected and installed at the front end of the valve body 1, and a liquid discharge pipe 3 is connected and installed at the rear end of the valve body 1. The liquid inlet pipe 2 is designed with a flared structure, the size of the rear end of the liquid inlet pipe 2 is smaller than that of the front end of the liquid inlet pipe 2, and the rear end of the liquid inlet pipe 2 is connected and installed with the front end of the valve body 1;

[0024] The liquid discharge pipe 3 is designed with a cylindrical structure, and the pipe diameter of the liquid discharge pipe 3 matches the size of the rear end of the liquid inlet pipe 2;

[0025] The centers of the valve body 1, the liquid inlet pipe 2, and the liquid discharge pipe 3 are located on the same axis.

[0026] Specifically, through the three-eccentric design, the contact between the sealing surface of the valve plate 15 and the valve seat is achieved through torque, rather than relying on the elastic deformation of the valve seat. This design ensures that there is almost no friction between the sealing surfaces when the valve is opened and closed, thus reducing the possibility of wear and scaling. The liquid inlet pipe 2 is designed with a flared structure, which can effectively guide the fluid flow, reduce the retention of the fluid inside the valve, and thus reduce the risk of scaling. The enhanced fluidity of the fluid helps to remove the particulate matter attached to the valve seat and the valve plate 15. The valve adopts a multi-layer sealing structure, and different sealing materials can be selected according to the working conditions to ensure good sealing performance under various media and temperatures. This design not only improves the sealing effect but also reduces the scaling problem caused by poor sealing. The design of the valve makes each component easy to disassemble and maintain, and users can regularly check and clean the inside of the valve to further reduce the risk of scaling. In summary, this three-eccentric hard-sealed anti-scaling coke butterfly valve significantly improves the use reliability under complex working conditions through optimized design and material selection, and avoids the problem of inconvenient opening and closing caused by scaling.

[0027] Embodiment 2: In order to improve the sealing performance of the valve body during use, as Figure 3 and Figure 4 shown, in this embodiment, the valve body 1 includes a valve body 11. A sealing ring 14 is fixedly installed on the inner side of the front end of the valve body 11 through mounting screws 141. A valve rod 13 passes through the inner side of the valve body 11, and a valve plate 15 is fixedly installed on the valve rod 13. In the design, the valve body 1 is composed of the valve body 11. A sealing ring 14 is fixed on the inner side of the front end of the valve body 11 through mounting screws 141. A valve rod 13 is provided through the inner side of the valve body 11, and a valve plate 15 is fixedly connected to the valve rod 13. This design ensures the sealing performance of the valve and the structural stability, and at the same time is convenient for maintenance and replacement of the sealing components.

[0028] Furthermore, a gasket 142 is clamped and installed on the side of the back of the sealing ring 14 opposite to the valve body 11, and the inner diameter of the gasket 142 matches the outer diameter of the valve plate 15. In the design, a gasket 142 is clamped and installed on the side of the back of the sealing ring 14 opposite to the valve body 11, and the inner diameter of the gasket 142 matches the outer diameter of the valve plate 15. Such a design improves the sealing performance of the valve, ensures reliable operation under high pressure and corrosive media, and reduces the potential leakage risk.

[0029] Furthermore, the bottom end of the valve stem 13 passes through the valve body 11 and is rotatably installed with a second seal 133. A handwheel 131 is fixedly installed at the top of the valve stem 13, and a first seal 132 is rotatably installed on the valve stem 13 below the handwheel 131. In the design, the bottom end of the valve stem 13 passes through the valve body 11 and is rotatably installed with a second seal 133. A handwheel 131 is fixedly installed at the top of the valve stem 13, and a first seal 132 is rotatably installed on the valve stem 13 below the handwheel 131. This multi-stage sealing design enhances the sealing effect of the valve, prevents the leakage of the medium, and at the same time facilitates the opening and closing operations of the valve.

[0030] Furthermore, the first seal 132 is fixedly installed at the top of the valve body 11, and the second seal 133 is fixedly installed at the bottom end of the valve body 11. In the design, the first seal 132 is fixedly installed at the top of the valve body 11, and the second seal 133 is fixedly installed at the bottom end of the valve body 11. This up-and-down sealing design provides double protection, ensures the sealing performance of the valve under various working conditions, and extends the service life of the valve.

[0031] Furthermore, the outer diameter of the valve plate 15 matches the inner diameter of the sealing ring 14. The valve plate 15 is rotatably installed at the front end inside the valve body 11, and the outer side of the valve plate 15 contacts the inner side of the gasket 142 but is not fixedly connected. In the design, the outer diameter of the valve plate 15 matches the inner diameter of the sealing ring 14. The valve plate 15 is rotatably installed at the front end inside the valve body 11, and the outer side of the valve plate 15 contacts the inner side of the gasket 142 but is not fixedly connected. This design allows the valve plate 15 to move smoothly during the opening and closing process, reduces friction and wear, and improves the durability and operating flexibility of the valve.

[0032] Embodiment 3: To improve the stability of the connection structure between the valve body and the liquid inlet pipe and the liquid discharge pipe, as Figure 1 and Figure 2 shown, in this embodiment, the opposite sides of the liquid inlet pipe 2 and the liquid discharge pipe 3 are respectively fixedly connected to the valve body 1 through mounting bolts 12. In the design, the opposite sides of the liquid inlet pipe 2 and the liquid discharge pipe 3 are respectively fixedly connected to the valve body 1 through mounting bolts 12. This fixing method ensures a tight connection between the pipeline and the valve body 1, prevents the leakage of the working medium under high pressure, and at the same time facilitates the installation and maintenance of the pipeline.

[0033] When the utility model is in use, place the valve body 11 on the workbench to ensure its stability and no damage. Fix and install the sealing ring 14 inside the front end of the valve body 11 through the mounting screw 141, and clamp and install the sealing gasket 142 on the side opposite to the valve body 11 on the back of the sealing ring 14. Ensure that the inner diameter of the sealing gasket 142 matches the outer diameter of the valve plate 15. Pass the valve stem 13 through the valve body 11 and fix the valve plate 15 on the valve stem 13 inside the valve body 11. Rotationally install the second seal 133 at the bottom end of the valve stem 13, fixedly install the handwheel 131 at the top of the valve stem 13, rotationally install the first seal 132 on the valve stem 13 below the handwheel 131, and make the first seal 132 fixedly connected to the top of the valve body 11 and the second seal 133 fixedly connected to the bottom of the valve body 11, thus completing the assembly of the valve body 1. Align the flared structure of the liquid inlet pipe 2 with the front end of the valve body 1 to ensure that the rear end size of the liquid inlet pipe 2 matches the front end size of the valve body 1. Align one end of the liquid discharge pipe 3 with the rear end of the valve body 1 to ensure that the pipe diameter of the liquid discharge pipe 3 matches the rear end size of the liquid inlet pipe 2, and use the mounting bolts 12 to fix the liquid inlet pipe 2 and the liquid discharge pipe 3 on both sides of the valve body 1. Check whether all components are correctly installed to ensure that the valve plate 15 can rotate freely inside the valve body 11 and contact but is not fixedly connected to the inside of the sealing gasket 142. Ensure that all bolts and screws are tightened and there is no looseness. After the assembly is completed, conduct the opening and closing test of the valve to ensure smooth valve operation and good sealing performance.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A three-eccentric hard-sealing anti-caking coke butterfly valve, comprising a valve body (1), a liquid inlet pipe (2) is connected and installed at the front end of the valve body (1), and a liquid discharge pipe (3) is connected and installed at the rear end of the valve body (1), characterized in that: The liquid inlet pipe (2) is designed with a flared structure, the size of the rear end of the liquid inlet pipe (2) is smaller than that of the front end of the liquid inlet pipe (2), and the rear end of the liquid inlet pipe (2) is connected and installed with the front end of the valve body (1); The liquid discharge pipe (3) is designed with a cylindrical structure, and the pipe diameter of the liquid discharge pipe (3) is matched with the size of the rear end of the liquid inlet pipe (2); The centers of the valve body (1), the liquid inlet pipe (2) and the liquid discharge pipe (3) are located on the same axis.

2. The triple-eccentric hard-sealing anti-caking coke butterfly valve according to claim 1, characterized in that, The valve body (1) includes a valve body (11), a sealing ring (14) is fixedly installed on the inner side of the front end of the valve body (11) through mounting screws (141), a valve rod (13) passes through the inner side of the valve body (11), and a valve plate (15) is fixedly installed on the valve rod (13).

3. The triple-eccentric hard-sealing anti-caking coke butterfly valve according to claim 2, wherein, A sealing gasket (142) is clamped and installed on the side of the back of the sealing ring (14) opposite to the valve body (11), and the inner diameter of the sealing gasket (142) is matched with the outer diameter of the valve plate (15).

4. A triple-eccentric hard-sealed anti-caking coke butterfly valve according to claim 2, characterized in that, The bottom end of the valve rod (13) passes through the valve body (11) and a second sealing member (133) is rotatably installed, a handwheel (131) is fixedly installed at the top of the valve rod (13), and a first sealing member (132) is rotatably installed on the valve rod (13) below the handwheel (131).

5. A triple-eccentric hard-sealing anti-caking coke butterfly valve according to claim 4, characterized in that, The first sealing member (132) is fixedly installed at the top of the valve body (11), and the second sealing member (133) is fixedly installed at the bottom end of the valve body (11).

6. A triple-eccentric hard-sealed anti-caking coke butterfly valve according to claim 2, characterized in that, The outer diameter of the valve plate (15) is matched with the inner diameter of the sealing ring (14), the valve plate (15) is rotatably installed at the front end inside the valve body (11), and the outer side of the valve plate (15) is in contact with the inner side of the sealing gasket (142) but not fixedly connected.

7. The triple-eccentric hard-sealed anti-caking coke butterfly valve according to claim 1, characterized in that, The opposite sides of the liquid inlet pipe (2) and the liquid discharge pipe (3) are respectively fixedly connected to the valve body (1) through mounting bolts (12).

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