High-performance eccentric semi-ball valve

Abstract

The utility model discloses a high-performance eccentric semi-ball valve, which comprises an eccentric semi-ball valve body and a filter component, the eccentric semi-ball valve body comprises a valve body, a valve core is rotatably arranged in the valve body, a sealing ring is arranged on the arc-shaped surface of the side wall of the valve core facing a liquid inlet of the valve body, an annular groove is arranged on the sealing ring, and the filter component is arranged in the annular groove. When the valve element is in a closed state, the annular groove is completely attached to the inner side wall of the liquid inlet of the valve body. The filtering assembly comprises a filtering ring and a filtering plate, and the filtering ring and the filtering plate are installed in the liquid inlet pipe of the valve body. The liquid inlet pipe is internally provided with the filter piece consisting of the filter ring and the filter plate, so that the influence on the flow velocity of a medium can be reduced while impurities in the medium are filtered; when the valve element is closed, the filtering piece can completely intercept the impurities along with the slow flow speed of the medium, the impurities are prevented from being blocked in the annular groove, tight sealing between the valve element and the valve body is ensured, and leakage of the medium after the valve element is closed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a high-performance eccentric hemispherical valve. Background Art

[0002] The closing part of the eccentric hemispherical valve is a hemispherical body, which rotates around the center line of the valve body to achieve the purpose of opening or closing. It is widely used in steel, hydropower, sugar making, paper industry, municipal water supply, sewage treatment and other occasions. The eccentric hemispherical valve and the gate valve are valves of the same type. The difference is that its closing part is a sphere, which rotates around the center line of the valve body to achieve the purpose of opening and closing.

[0003] When the existing eccentric ball valve is closed, as the fluid velocity decreases, impurities in the medium will be blocked in the arc-shaped sealing groove, resulting in a poor seal between the valve core and the valve body after the valve core is closed, resulting in the risk of medium leakage after the eccentric ball valve is closed; at the same time, although a filter screen is set at the front end of the valve core to intercept impurities, the installation of the filter screen will affect the flow rate of the medium and require frequent cleaning, affecting the medium delivery efficiency.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a high-performance eccentric hemispherical valve, which can solve the problem that impurities are blocked in the sealing groove, resulting in the valve core not closing tightly, and the problem that the filter screen affects the medium flow rate and frequent cleaning.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A high performance eccentric hemispherical valve, comprising:

[0008] The eccentric hemispherical valve body includes a valve body, in which a valve core is rotatably mounted, and the valve body is opened and closed by the switch of the valve core. A sealing ring is arranged on the arc surface of the side wall of the valve core facing the liquid inlet of the valve body, and the sealing ring makes the valve core and the valve body tightly sealed after closing to avoid leakage of the medium. An annular groove is arranged on the sealing ring, and when the valve core is in the closed state, the annular groove is completely attached to the inner side wall at the liquid inlet of the valve body, so that when the valve core is in the closed state, the sealing ring and the liquid inlet of the valve body are in a completely sealed state under the action of the annular groove.

[0009] The filter assembly includes a filter ring and a filter plate, the filter ring and the filter plate are installed in the liquid inlet pipe of the valve body, the filter ring is arranged on a side close to the valve core, and a plurality of filter holes are provided on the filter ring and the filter plate, and the axis of the filter ring and the filter plate coincides with the axis of the liquid inlet pipe of the valve body. The filter ring and the filter plate are used to filter the medium flowing in the liquid inlet pipe, and the filter ring is arranged in a hollow manner, and the filter plate is arranged in a manner smaller than the inner diameter of the liquid inlet pipe, so that the medium can not only flow through the filter holes on the filter ring and the filter plate, but also flow through the outer side of the filter plate and the hollow part of the filter ring, so that the filter ring and the filter plate can intercept some impurities in the medium, and the filter ring and the filter plate have little effect on the flow rate of the medium.

[0010] In one or more embodiments of the utility model, a sealing layer is provided on the vertical surface of the valve core facing the side wall of the liquid inlet of the valve body, and the sealing layer abuts against the side wall of the filter ring when the valve core is in a closed state. When the valve core is closed, the sealing layer will first abut against the filter ring, so that the hollow position of the filter ring can be blocked, further preventing impurities in the medium from passing through the hollow position of the filter ring and being blocked in the annular groove when the medium flow rate decreases, ensuring that impurities will not enter the annular groove when the valve core is closed.

[0011] In one or more embodiments of the present invention, drive plates are integrally formed on the side walls at both ends of the valve core, and a valve stem is integrally formed on the drive plate at the upper end of the valve core, and the drive plate is used to drive the valve core to rotate.

[0012] In one or more embodiments of the utility model, the valve stem is rotatably connected to the top wall plate of the valve body in a through manner, so that the valve stem can rotate on the valve body. A sealing ring is arranged between the valve body and the valve stem, so that the valve body and the valve stem are tightly sealed to avoid leakage at the interface when the valve stem rotates.

[0013] In one or more embodiments of the present invention, a rotating rod is integrally formed at the bottom of the driving plate at the lower end of the valve core, a bearing is installed on the inner wall of the bottom of the valve body, and the lower end of the rotating rod is installed in the bearing. The rotating rod allows the driving plate at the lower end of the valve core to rotate while maintaining a stable structure.

[0014] In one or more embodiments of the utility model, the outer diameter of the filter ring matches the inner diameter of the valve body liquid inlet pipe, so that the outer wall of the filter ring fits on the inner wall of the liquid inlet pipe. The outer diameter of the filter plate is smaller than the inner diameter of the valve body liquid inlet pipe, so that the medium can flow in the liquid inlet pipe through the outer side of the filter plate. And the outer diameter of the filter plate is larger than the inner diameter of the filter ring, so that the filter ring and the filter plate form a complete filter net to intercept impurities in the liquid inlet pipe.

[0015] In one or more embodiments of the present invention, a plurality of fixing screws are installed on the filter plate in a penetrating manner, and the threaded ends of the plurality of fixing screws are threadedly connected to the filter ring. The threaded connection between the fixing screws and the filter ring enables the filter ring to be fixed on the plurality of fixing screws.

[0016] In one or more embodiments of the utility model, a limiting nut is threadedly connected to the fixing screw, and the limiting nut abuts against the side wall of the filter plate so that the filter plate can be fixed to the fixing screw by the limiting nut so that the distance between the filter ring and the filter plate is constant.

[0017] In one or more embodiments of the utility model, the upper and lower ends of the valve body liquid inlet pipe are respectively provided with a cleaning port and a slag discharge port, through which the impurities intercepted on the filter ring and the filter plate can be cleaned, and the cleaned impurities are discharged through the slag discharge port, so that the filter ring and the filter plate can be cleaned without being removed, thereby facilitating the cleaning of the filter ring and the filter plate. The cleaning port and the slag discharge port are both threadedly connected with a plugging screw, and the threaded end of the plugging screw is placed in the valve body, and the cleaning port and the slag discharge port can be blocked by the plugging screw to ensure that there is no leakage during the medium transportation.

[0018] In one or more embodiments of the present invention, a limiting ring is fixedly connected to the inner side wall of the liquid inlet pipe of the valve body, the limiting ring abuts against one side wall of the filter ring, and one end of the sealing screw placed in the valve body abuts against the other side wall of the filter ring. Through the cooperation of the limiting ring and the sealing screw, the filter ring is stable when installed in the liquid inlet pipe.

[0019] Compared with the prior art, the utility model has a filter element composed of a filter ring and a filter plate installed in the liquid inlet pipe, which can filter impurities in the medium while reducing the impact on the flow rate of the medium; when the valve core is closed, as the flow rate of the medium slows down, the filter element will completely intercept the impurities, avoiding the impurities from being blocked in the annular groove, ensuring a tight seal between the valve core and the valve body, and avoiding leakage of the medium after the valve core is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional diagram of a high-performance eccentric hemispherical valve in one embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional view of a high-performance eccentric hemispherical valve in one embodiment of the utility model;

[0023] Figure 3 It is a cross-sectional view of a high-performance eccentric hemispherical valve in one embodiment of the utility model;

[0024] Figure 4 For this utility model Figure 3 Schematic diagram at A in the middle;

[0025] Figure 5 It is a schematic diagram of the valve core in the utility model;

[0026] Figure 6 It is a schematic diagram of the filter assembly in the present utility model.

[0027] Description of main reference numerals:

[0028] 1-eccentric hemispherical valve body, 11-valve body, 12-valve core, 13-sealing ring, 14-annular groove, 15-sealing layer, 16-driving plate, 17-valve stem, 18-sealing ring, 19-rotating rod, 110-bearing, 2-filter assembly, 21-filter ring, 22-filter plate, 23-filter hole, 24-fixing screw, 25-limiting nut, 26-limiting ring, 27-cleaning port, 28-slag discharge port, 29-blocking screw. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] like Figure 1~Figure 3 As shown, a high-performance eccentric semi-ball valve in an embodiment of the utility model includes an eccentric semi-ball valve body 1 and a filter assembly 2.

[0031] like Figure 1~Figure 4As shown, the eccentric hemispherical valve body 1 includes a valve body 11, in which a valve core 12 is rotatably mounted, and the valve body 11 is opened and closed by the opening and closing of the valve core 12. A sealing ring 13 is provided on the arc surface of the side wall of the valve core 12 facing the liquid inlet of the valve body 11, and the sealing ring 13 makes the valve core 12 and the valve body 11 tightly sealed after closing to prevent leakage of the medium. An annular groove 14 is provided on the sealing ring 13, and when the valve core 12 is in the closed state, the annular groove 14 is completely attached to the inner side wall at the liquid inlet of the valve body 11, so that when the valve core 12 is in the closed state, the sealing ring 13 and the liquid inlet of the valve body 11 are in a completely sealed state under the action of the annular groove 14.

[0032] like Figure 1~Figure 3 As shown, the filter assembly 2 includes a filter ring 21 and a filter plate 22. The filter ring 21 and the filter plate 22 are installed in the liquid inlet pipe of the valve body 11. The filter ring 21 is arranged on a side close to the valve core 12. A plurality of filter holes 23 are provided on the filter ring 21 and the filter plate 22. The axis of the filter ring 21 and the filter plate 22 coincides with the axis of the liquid inlet pipe of the valve body 11. The filter ring 21 and the filter plate 22 are used to filter the medium flowing in the liquid inlet pipe. At the same time, the filter ring 21 is arranged in a hollow manner, and the filter plate 22 is arranged in a manner smaller than the inner diameter of the liquid inlet pipe, so that the medium can not only flow through the filter holes 23 on the filter ring 21 and the filter plate 22, but also flow through the outer side of the filter plate 22 and the hollow part of the filter ring 21, so that the filter ring 21 and the filter plate 22 can intercept some impurities in the medium, while the filter ring 21 and the filter plate 22 have little effect on the flow rate of the medium.

[0033] Preferably, the filter ring 21 and the filter plate 22 are arranged in a staggered manner in the liquid inlet pipe of the valve body 11, so that the filter ring 21 and the filter plate 22 form a complete filter element in the liquid inlet pipe of the valve body 11, but because there is a gap between the filter ring 21 and the filter plate 22, the medium can flow quickly through the gap, thereby reducing the restriction of the filter ring 21 and the filter plate 22 on the medium flow rate. When the valve core 12 is slowly closed, as the medium flow rate decreases, the filter ring 21 and the filter plate 22 can completely intercept the impurities in the medium, thereby preventing the impurities in the medium from being blocked in the annular groove 14, so that the annular groove 14 is completely fitted with the side wall of the liquid inlet of the valve body 11 after the valve core 12 is completely closed, so that the valve core 12 and the valve body 11 are completely sealed, and the leakage of the medium after the valve core 12 is closed is avoided.

[0034] like Figure 3 Combination Figure 4As shown, a sealing layer 15 is provided on the vertical surface of the valve core 12 facing the side wall of the liquid inlet of the valve body 11, and the sealing layer 15 abuts against the side wall of the filter ring 21 when the valve core 12 is in a closed state. When the valve core 12 is closed, the sealing layer 15 will first abut against the filter ring 21, so that the hollow position of the filter ring 21 can be blocked, further preventing impurities in the medium from passing through the hollow position of the filter ring 21 and being blocked in the annular groove 14 when the medium flow rate decreases, ensuring that impurities do not enter the annular groove 14 when the valve core 12 is closed.

[0035] like Figure 3 and Figure 5 As shown, driving plates 16 are integrally formed on the side walls at both ends of the valve core 12 , and a valve stem 17 is integrally formed on the driving plate 16 at the upper end of the valve core 12 . The driving plate 16 is used to drive the valve core 12 to rotate.

[0036] like Figure 1~Figure 3 As shown, the valve stem 17 is rotatably connected to the top wall plate of the valve body 11 in a through manner, so that the valve stem 17 can rotate on the valve body 11. A sealing ring 18 is provided between the valve body 11 and the valve stem 17, so that the valve body 11 and the valve stem 17 are tightly sealed to avoid leakage at the interface when the valve stem 17 rotates.

[0037] like Figure 3 and Figure 5 As shown, a rotating rod 19 is integrally formed at the bottom of the driving plate 16 at the lower end of the valve core 12, and a bearing 110 is installed on the inner wall of the bottom of the valve body 11. The lower end of the rotating rod 19 is installed in the bearing 110. The rotating rod 19 allows the driving plate 16 at the lower end of the valve core 12 to rotate while maintaining a stable structure.

[0038] like Figure 2 and Figure 3 As shown, the outer diameter of the filter ring 21 matches the inner diameter of the liquid inlet pipe of the valve body 11, so that the outer wall of the filter ring 21 fits on the inner wall of the liquid inlet pipe. The outer diameter of the filter plate 22 is smaller than the inner diameter of the liquid inlet pipe of the valve body 11, so that the medium can flow in the liquid inlet pipe through the outer side of the filter plate 22. And the outer diameter of the filter plate 22 is larger than the inner diameter of the filter ring 21, so that the filter ring 21 and the filter plate 22 form a complete filter net to intercept impurities in the liquid inlet pipe.

[0039] like Figure 3 and Figure 6 As shown, a plurality of fixing screws 24 are installed on the filter plate 22 in a penetrating manner, and the threaded ends of the plurality of fixing screws 24 are all threadedly connected to the filter ring 21. The threaded connection between the fixing screws 24 and the filter ring 21 enables the filter ring 21 to be fixed on the plurality of fixing screws 24.

[0040] like Figure 6As shown, a limiting nut 25 is threadedly connected to the fixing screw 24, and the limiting nut 25 abuts against the side wall of the filter plate 22, so that the filter plate 22 is fixed to the fixing screw 24 through the limiting nut 25, so that the distance between the filter ring 21 and the filter plate 22 is constant.

[0041] like Figure 3 and Figure 4 As shown, the upper and lower ends of the liquid inlet pipe of the valve body 11 are respectively provided with a cleaning port 27 and a slag discharge port 28, through which the impurities intercepted on the filter ring 21 and the filter plate 22 can be cleaned, and the cleaned impurities are discharged through the slag discharge port 28, so that the filter ring 21 and the filter plate 22 can be cleaned without being removed, thereby facilitating the cleaning of the filter ring 21 and the filter plate 22. A plugging screw 29 is threadedly connected in the cleaning port 27 and the slag discharge port 28, and the threaded end of the plugging screw 29 is placed in the valve body 11, and the cleaning port 27 and the slag discharge port 28 can be blocked by the plugging screw 29 to ensure that there is no leakage during the medium transportation.

[0042] like Figure 3 Combination Figure 4 As shown, a limit ring 26 is fixedly connected to the inner wall of the liquid inlet pipe of the valve body 11, and the limit ring 26 abuts against one side wall of the filter ring 21. One end of the sealing screw 29 placed in the valve body 11 abuts against the other side wall of the filter ring 21. Through the cooperation of the limit ring 26 and the sealing screw 29, the filter ring 21 is stable when installed in the liquid inlet pipe.

[0043] It should be noted that, since the medium transported by the eccentric semi-ball valve is corrosive and carries impurities such as particulate matter, the components provided in this application are all made of materials with excellent corrosion resistance and wear resistance to ensure the service life of the eccentric semi-ball valve.

[0044] When in use, the valve core 12 is opened by rotating the valve stem 17, and the medium will flow in the liquid inlet pipe of the valve body 11. The filter element composed of the filter ring 21 and the filter plate 22 can intercept some impurities in the medium, reducing the impurities entering the valve body 11, thereby slowing down the wear of the impurities on the internal parts of the valve body 11; when the valve core 12 needs to be closed, the valve stem 17 is rotated, and as the valve core 12 is gradually closed, the flow rate of the medium is slowed down, and the filter ring 21 and the filter plate 22 can completely intercept the medium in the impurities, while ensuring that the medium entering the valve body 11 before the valve core 12 is closed will not carry impurities, thereby effectively avoiding the impurities from being blocked in the annular groove 14 , and before the valve core 12 is completely closed, the sealing layer 15 will abut against the side wall of the filter ring 21, further ensuring that impurities will not enter the valve body 11, ensuring that when the valve core 12 is completely closed, the sealing ring 13 can be completely fitted with the valve body 11 through the annular groove 14, so that the valve body 11 and the valve core 12 are completely sealed, avoiding leakage of the medium after the valve core 12 is closed; when the filter ring 21 and the filter plate 22 need to be cleaned, when the pipeline is shut down, the plugging screw 29 is removed, and the filter ring 21 and the filter plate 22 can be cleaned through the cleaning port 27 and the slag discharge port 28, and the cleaned impurities are discharged through the slag discharge port 28, making it easy to clean the filter ring 21 and the filter plate 22.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high performance eccentric hemispherical valve, characterized in that: include: The eccentric hemispherical valve body comprises a valve body, a valve core is rotatably mounted in the valve body, a sealing ring is arranged on the arc surface of the side wall of the valve core facing the liquid inlet of the valve body, an annular groove is opened on the sealing ring, and the annular groove is completely attached to the inner side wall of the liquid inlet of the valve body when the valve core is in a closed state; The filter assembly includes a filter ring and a filter plate, wherein the filter ring and the filter plate are installed in the liquid inlet pipe of the valve body, the filter ring is arranged on the side close to the valve core, and a plurality of filter holes are provided on the filter ring and the filter plate, and the axis of the filter ring and the filter plate coincides with the axis of the liquid inlet pipe of the valve body.

2. A high performance eccentric hemispherical valve according to claim 1, characterized in that: A sealing layer is arranged on the vertical surface of the valve core facing the side wall of the liquid inlet of the valve body, and the sealing layer abuts against the side wall of the filter ring when the valve core is in a closed state.

3. A high performance eccentric hemispherical valve according to claim 1, characterized in that: A driving plate is integrally formed on the side walls at both ends of the valve core, and a valve stem is integrally formed on the driving plate at the upper end of the valve core.

4. A high performance eccentric hemispherical valve according to claim 3, characterized in that: The valve stem is rotatably connected to the top wall plate of the valve body in a penetrating manner, and a sealing ring is arranged between the valve body and the valve stem.

5. A high performance eccentric hemispherical valve according to claim 4, characterized in that: A rotating rod is integrally formed at the bottom of the driving plate at the lower end of the valve core, a bearing is installed on the inner side wall of the bottom of the valve body, and the lower end of the rotating rod is installed in the bearing.

6. A high performance eccentric hemispherical valve according to claim 1, characterized in that: The outer diameter of the filter ring matches the inner diameter of the valve body liquid inlet pipe, the outer diameter of the filter plate is smaller than the inner diameter of the valve body liquid inlet pipe, and the outer diameter of the filter plate is larger than the inner diameter of the filter ring.

7. A high performance eccentric hemispherical valve according to claim 1, characterized in that: A plurality of fixing screws are installed on the filter plate in a penetrating manner, and the threaded ends of the plurality of fixing screws are all threadedly connected to the filter ring.

8. A high performance eccentric hemispherical valve according to claim 7, characterized in that: The fixing screw rod is threadedly connected with a limiting nut, and the limiting nut abuts against the side wall of the filter plate.

9. A high performance eccentric hemispherical valve according to claim 1, characterized in that: The upper and lower ends of the valve body liquid inlet pipe are respectively provided with a cleaning port and a slag discharge port, and the cleaning port and the slag discharge port are both threadedly connected with a plugging screw, and the threaded end of the plugging screw is placed in the valve body.

10. A high performance eccentric hemispherical valve according to claim 9, characterized in that: A limiting ring is fixedly connected to the inner side wall of the valve body liquid inlet pipe, the limiting ring abuts against one side wall of the filter ring, and one end of the blocking screw disposed in the valve body abuts against the other side wall of the filter ring.

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