Plug valve

Abstract

The invention discloses a plug valve. The plug valve comprises a valve body, a rotating part, a valve element plate and a sealing piece, the valve body comprises a first valve body and a second valve body, a first conveying pipeline is formed in the first valve body, a second conveying pipeline is formed in the second valve body, and the first conveying pipeline and the second conveying pipeline can be arranged in a communicating mode; the rotating part comprises a driving shaft and a connecting piece, one end of the connecting piece is connected with the driving shaft, the driving shaft is suitable for driving the connecting piece to rotate, and a through hole penetrating through the connecting piece is formed in the other end of the connecting piece; the valve element plate is connected with the connecting piece, and when the connecting piece rotates, the valve element plate is suitable for opening or closing the first conveying pipeline; the sealing piece is arranged in the through hole and can move towards or away from the valve element plate. The plug valve provided by the invention has relatively good sealing performance.

Description

Technical Field

[0001] The present application belongs to the field of valve technology, and in particular relates to a plug valve. Background Art

[0002] The transportation of concentrate and ash during the copper smelting process relies on dense-phase airflow. Dense-phase airflow conveying equipment uses gas as a medium to transport solid particulate materials through closed pipes. During long-term transportation, the plug valve in the equipment is subject to the impact and friction of the material, causing wear on the seal and inner wall of the plug valve, affecting its normal operation. Therefore, a plug valve with strong sealing performance is required. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a plug valve with good sealing performance.

[0004] According to the embodiment of the present application, the ball valve includes a valve body, a rotating part, a valve core plate and a sealing member, the valve body includes a first valve body and a second valve body, a first delivery pipe is formed in the first valve body, a second delivery pipe is formed in the second valve body, and the first delivery pipe and the second delivery pipe can be connected and arranged; the rotating part includes a drive shaft and a connecting member, one end of the connecting member is connected to the drive shaft, the drive shaft is suitable for driving the connecting member to rotate, and the other end of the connecting member is formed with a through hole passing through the connecting member; the valve core plate is connected to the connecting member, and when the connecting member rotates, the valve core plate is suitable for opening or closing the first delivery pipe; the sealing member is arranged in the through hole, and the sealing member can move toward or away from the valve core plate.

[0005] According to the plug valve of the embodiment of the present application, a sealing member is disposed within the through hole and can move toward or away from the valve core plate. When the sealing member moves a certain distance toward the valve core plate, the pressure between the valve core plate and the wall of the first delivery pipe increases, which helps to enhance the sealing between the valve core plate and the first delivery pipe, thereby improving the sealing performance of the plug valve. When the valve core plate wears, the sealing member can be adjusted to move further toward the valve core plate, thereby increasing the pressure between the valve core plate and the wall of the first delivery pipe, thereby improving the sealing effect of the plug valve. As a result, the plug valve provided by the present application has good sealing performance.

[0006] In addition, the plug valve according to the embodiment of the present invention also has the following additional technical features:

[0007] According to one embodiment of the present application, the sealing member includes an elastic member and a first support member. One end of the first support member is disposed in contact with the elastic member, and the first support member is movable toward or away from the elastic member. Thus, the first support member can compress the elastic member to generate elastic force, further enhancing the interaction between the valve core plate and the wall of the first delivery pipe, thereby improving the sealing performance of the plug valve.

[0008] According to one embodiment of the present application, the first support member includes a nut and a screw. One end of the screw contacts the elastic member, and the nut is disposed at the other end of the screw. When the nut is rotated, the screw can move toward or away from the elastic member. Thus, rotation of the nut can change the position of the screw, thereby adjusting the elastic member and thus adjusting the sealing performance of the plug valve.

[0009] According to one embodiment of the present application, the sealing member further includes a second support member disposed between the elastic member and the valve core plate, thereby providing stable support for the valve core plate and preventing it from excessive deformation or displacement when subjected to pressure.

[0010] According to one embodiment of the present application, the sealing member further includes a gasket, which is disposed at one end of the first support member near the elastic member and surrounds the first support member. This fills the gap between the first support member and the elastic member, reducing the possibility of loosening or falling off due to the gap, improving the stability of the overall structure, and extending the service life of the plug valve.

[0011] According to one embodiment of the present application, a first groove is provided on the surface of the valve core plate facing the first delivery pipe, and a protrusion is provided at the connection between the connector and the valve core plate, which is adapted to be inserted into the first groove. This strengthens the connection between the connector and the valve core plate, preventing loosening or falling off during operation.

[0012] According to one embodiment of the present application, a second groove is formed on the surface of the valve core plate facing the first delivery pipe. The second groove is filled with tungsten steel, which directly contacts the wall of the first delivery pipe. This enhances the wear resistance between the valve core plate and the wall of the first delivery pipe, reducing wear and scratches.

[0013] According to one embodiment of the present application, the wall of the first delivery pipe has a third groove corresponding to the second groove. The third groove is filled with the tungsten steel. When the valve core plate closes the first delivery pipe, the tungsten steel in the second groove contacts the tungsten steel in the third groove. This reduces mutual friction and wear, thereby extending the service life of the plug valve.

[0014] According to one embodiment of the present application, the plug valve further comprises a cylinder connected to the drive shaft, thereby enabling automatic opening and closing control of the valve core plate.

[0015] According to one embodiment of the present application, a paper pad is provided at the contact portion between the first valve body and the second valve body, thereby filling the gap between the first valve body and the second valve body, providing an additional sealing effect and reducing the possibility of fluid leakage.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 Schematic diagram of the structure of the plug valve provided in the embodiment of the present application;

[0019] Figure 2 is a side view of a plug valve provided in an embodiment of the present application;

[0020] Figure 3 is a top view of the plug valve provided in an embodiment of the present application;

[0021] Figure 4 is a cross-sectional view of a plug valve provided in an embodiment of the present application;

[0022] Figure 5 It is an exploded view of the plug valve provided in an embodiment of the present application.

[0023] Figure numerals: plug valve 100, valve body 10, first valve body 11, first delivery pipe 111, second valve body 12, second delivery pipe 121, rotating part 20, drive shaft 21, connecting part 22, through hole 221, protrusion 2211, valve core plate 30, first groove 31, second groove 32, sealing part 40, first support part 41, nut 411, screw 412, second support part 42, elastic part 43, washer 44, cylinder 50, paper gasket 60, tungsten steel 70. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0025] Refer to the following drawings Figure 1-Figure 5 The plug valve 100 according to an embodiment of the present application is described. The plug valve 100 provided by the present application has good sealing performance.

[0026] like Figure 1-Figure 4 As shown, the plug valve 100 according to the embodiment of the present application includes a valve body 10 , a rotating portion 20 , a valve core plate 30 and a sealing member 40 .

[0027] Among them, reference Figure 1-Figure 3 The valve body 10 includes a first valve body 11 and a second valve body 12. A first delivery pipe 111 is formed in the first valve body 11, and a second delivery pipe 121 is formed in the second valve body 12. The first delivery pipe 111 and the second delivery pipe 121 can be connected. The separation of the first valve body 11 and the second valve body 12 allows the first delivery pipe 111 and the second delivery pipe 121 to be operated and managed independently, increasing the flexibility and convenience of the structure. The first delivery pipe 111 and the second delivery pipe 121 can be connected, allowing the two pipes to be connected to each other, enabling the flow and transmission of fluid between the two pipes, and improving the overall performance and efficiency of the equipment. In addition, during the air flow conveying process, the material will move along the flow direction of the air flow, and will come into contact with the pipe wall inside the plug valve 100, thereby wearing the plug valve 100. The connection between the first conveying pipe 111 and the second conveying pipe 121 can ensure that the material can be evenly distributed when passing through the plug valve 100, so that the entire plug valve 100 can withstand the scouring and wear of the material more evenly, which can reduce the wear of the material on the valve body 10 and extend the service life of the plug valve 100.

[0028] In addition, reference Figure 4 The rotating portion 20 includes a drive shaft 21 and a connector 22. One end of the connector 22 is connected to the drive shaft 21, and the drive shaft 21 is adapted to drive the connector 22 to rotate. The other end of the connector 22 is formed with a through hole 221 extending therethrough. The valve core plate 30 is connected to the connector 22. When the connector 22 rotates, the valve core plate 30 is adapted to open or close the first delivery pipe 111. By driving the connector 22 to rotate through the drive shaft 21, the position of the valve core plate 30 can be quickly and accurately controlled, thereby efficiently opening or closing the first delivery pipe 111.

[0029] It should be noted that the material of the valve core plate 30 is not particularly limited and can be cast iron, stainless steel or other materials. According to a specific embodiment of the present invention, the valve core plate 30 is made of tungsten steel alloy, which has high hardness, high wear resistance and high corrosion resistance.

[0030] For further reference, Figure 4The sealing member 40 is disposed within the through-hole 221 and is movable toward or away from the valve core plate 30. The sealing member 40 is disposed within the through-hole 221 and is movable toward or away from the valve core plate 30. When the sealing member 40 moves toward the valve core plate 30 to a certain position, the pressure between the valve core plate 30 and the wall of the first delivery pipe 111 increases, thereby enhancing the sealing between the valve core plate 30 and the first delivery pipe 111, thereby improving the sealing performance of the plug valve 100. When the valve core plate 30 wears, the sealing member 40 can move further toward the valve core plate 30, increasing the pressure between the valve core plate 30 and the wall of the first delivery pipe 111, thereby improving the sealing effect of the plug valve 100.

[0031] According to some embodiments of the present invention, reference Figure 4 The sealing member 40 includes an elastic member 43 and a first support member 41. One end of the first support member 41 is disposed in contact with the elastic member 43, and the first support member 41 can move toward or away from the elastic member 43. By disposing one end of the first support member 41 in contact with the elastic member 43, when the first support member 41 moves toward the elastic member 43, the elastic member 43 is compressed to generate an elastic force, further enhancing the interaction force between the valve core plate 30 and the wall of the first delivery pipe 111. In addition, the elastic member 43 can also provide support for the valve core plate 30, which is beneficial for the valve core plate 30 to seal the first delivery pipe 111, thereby improving the sealing performance of the plug valve 100. Moreover, the elastic member 43 can also achieve wear-resistant performance. Specifically, when the pressure between the valve core plate 30 and the pipe wall of the first conveying pipe 11 is too large, the valve core plate 30 is prone to wear. By moving the first support member 41 in the direction away from the elastic member 43, the elastic force of the elastic member 43 can be adjusted to reduce the pressure between the valve core plate 30 and the pipe wall of the first conveying pipe 11, thereby reducing the wear of the valve core plate 30 by the material, which is beneficial to extending the service life of the plug valve 100.

[0032] Furthermore, the elastic member 43 can be a spring, and one end of the first support member 41 is arranged in contact with the spring. The first support member 41 can move toward or away from the spring. When the first support member 41 moves toward the spring, it can compress the spring to generate elastic force, further enhancing the force between the valve core plate 30 and the wall of the first delivery pipe 111, which is beneficial to improving the sealing performance of the plug valve 100. Moreover, the spring can also achieve wear resistance. Specifically, when the pressure between the valve core plate 30 and the wall of the first delivery pipe 11 is too high, the valve core plate 30 is prone to wear. By moving the first support member 41 away from the spring, the elastic force of the spring can be adjusted, reducing the pressure between the valve core plate 30 and the wall of the first delivery pipe 11, thereby reducing the wear of the valve core plate 30 by the material, which is beneficial to extending the service life of the plug valve 100. In addition, the material of the spring is selected based on the force that the valve core plate 30 needs to withstand. The spring used in this application is made of high-strength steel, which is beneficial to improving the sealing performance of the plug valve 100.

[0033] According to some embodiments of the present invention, reference Figure 4 The first support member 41 includes a nut 411 and a screw 412. One end of the screw 412 is in contact with the elastic member 43. The nut 411 is arranged at the other end of the screw 412. When the nut 411 rotates, the screw 412 can move toward or away from the elastic member 43. The nut 411 and the screw 412 provide support for the elastic member 43, ensuring that the elastic member 43 can remain stable when subjected to pressure or tension, and prevent excessive deformation or damage. The rotation of the nut 411 can change the position of the screw 412, thereby achieving the adjustment of the elastic member 43. When the nut 411 rotates to make the screw 412 move toward the elastic member 43, the elastic member 43 is compressed to generate elastic force, which can further enhance the force between the valve core plate 30 and the wall of the first delivery pipe 111, thereby enhancing the sealing of the plug valve 100.

[0034] According to some embodiments of the present invention, reference Figure 4 , the sealing member 40 also includes a second support member 42, which is arranged between the elastic member 43 and the valve core plate 30. By arranging the second support member 42 between the elastic member 43 and the valve core plate 30, it is possible to provide stable support for the valve core plate 30 to prevent it from being excessively deformed or displaced when under pressure. During the fluid transportation process, impact and vibration may occur. These transient forces may have an adverse effect on the valve core plate 30, and the second support member 42 reduces the direct effect on the valve core plate 30 by absorbing part of the impact and vibration energy, thereby helping to maintain a stable working state of the plug valve 100 and thus helping to extend the service life of the plug valve 100.

[0035] Furthermore, when the elastic member 43 is a spring, the spring can be mounted on the second support member 42. The spring's elasticity and damping properties can provide a shock-absorbing and buffering effect. When the fluid medium passes through the valve, impact forces or vibrations may be generated. The second support member 42, mounted with a spring, can absorb these impacts and vibrations, reducing the instantaneous pressure on the valve core plate 30, thereby reducing wear caused by impact and vibration, and thereby improving the sealing performance of the plug valve 100.

[0036] According to some embodiments of the present invention, reference Figure 4 The sealing member 40 further includes a gasket 44, which is disposed at one end of the first support member 41 near the elastic member 43 and surrounds the first support member 41. The placement of the gasket 44 between the first support member 41 and the elastic member 43 provides additional support, helping to stabilize the first support member 41 and prevent it from excessive deformation or displacement when subjected to pressure. The gasket 44 also fills the gap between the first support member 41 and the elastic member 43, reducing the possibility of loosening or falling off due to the gap, improving the stability of the overall structure, and extending the service life of the plug valve 100.

[0037] According to some embodiments of the present invention, reference Figure 4 A first groove 31 is provided on the surface of the valve core plate 30 facing the first delivery pipe 111, and a protrusion 2211 is provided at the connection between the connector 22 and the valve core plate 30. The protrusion 2211 is suitable for inserting into the first groove 31. By inserting the protrusion 2211 into the first groove 31, the connector 22 and the valve core plate 30 can be accurately positioned and fixed. On the one hand, the connector 22 and the valve core plate 30 can be connected into a whole. When the drive shaft 21 drives the connector 22 to rotate, the position of the valve core plate 30 can be controlled, thereby efficiently opening or closing the first delivery pipe 111. On the other hand, the connection strength between the connector 22 and the valve core plate 30 is increased to prevent loosening or falling off during operation.

[0038] According to some embodiments of the present invention, reference Figure 5 A second groove 32 is formed on the surface of the valve core plate 30 facing the first delivery pipe 111. This second groove 32 is filled with tungsten steel 70, which directly contacts the wall of the first delivery pipe 111. Tungsten steel 70 is a highly hard and wear-resistant material. Filling the second groove 32 enhances the wear resistance between the valve core plate 30 and the wall of the first delivery pipe 111, reducing wear and scratches. Furthermore, before placement of the tungsten steel 70, the surface of the tungsten steel 70 needs to be smoothed to further improve its wear resistance.

[0039] According to some embodiments of the present invention, reference Figure 5 The wall of the first delivery pipe 111 has a third groove corresponding to the second groove 32, and the third groove is filled with the tungsten steel 70. When the valve core plate 30 closes the first delivery pipe 111, the tungsten steel 70 in the second groove 32 contacts the tungsten steel 70 in the third groove. When the valve core plate 30 closes the first delivery pipe 111, the tungsten steel 70 in the second groove 32 and the third groove contacts each other, forming a tight seal, improving the sealing performance, and effectively reducing the possibility of fluid leakage. In addition, the design of the tungsten steel 70 can also realize the maintenance and reuse function of the plug valve 100. When the tungsten steel 70 is worn, it can be replaced with a new tungsten steel 70, thereby realizing the recycling of the plug valve 100 and reducing the maintenance cost of the plug valve 100. Finally, the use of the plug valve 100 can replace the traditional dome valve, and no sealing ring is required. The tungsten steel 70 filled in the second groove 32 and the tungsten steel 70 filled in the third groove are contact-sealed, thereby achieving better sealing performance. In addition, the tungsten steel 70 also has good wear resistance, which can increase the service life of the plug valve 100 from 1 month to 6 months.

[0040] According to some embodiments of the present invention, reference Figure 5 The plug valve 100 also includes a cylinder 50, which is connected to the drive shaft 21. The cylinder 50 is connected to the drive shaft 21, and the power generated by the cylinder 50 can be effectively transmitted to the drive shaft 21. The drive shaft 21 drives the connecting member 22 to rotate, which can control the position of the valve core plate 30, open or close the first conveying pipe 111, and thus realize automatic switching control of the valve core plate 30. Furthermore, the cylinder 50 can quickly close or open the valve core plate 30 according to actual needs. During the conveying process, timely opening and closing can reduce unnecessary energy consumption and improve the efficiency of the overall airflow conveying equipment. In addition, a pneumatic control element is also provided on the cylinder 50, and a valve core plate 30 switch limit assembly is also provided on the valve core plate 30. Therefore, under the cooperation of the pneumatic control element and the auxiliary functions such as the valve core plate 30 switch limit, the automatic switching control of the valve core plate 30 can be further realized.

[0041] Specifically, pneumatic control components, such as pneumatic actuators and pneumatic positioners, can receive air pressure signals and control the movement of the cylinder 50 according to a set program or logic, thereby achieving automatic opening and closing of the valve core plate 30. The valve core plate 30 switch limiter is a device used to detect the current valve position and is typically composed of a magnetic switch, an inductive proximity switch, etc. When the valve core plate 30 reaches the limit position, the switch sends a signal to the control system. The control system then determines the valve open state based on the received signal and controls the pneumatic components to perform the corresponding actions. For example, when the valve core plate 30 is in the closed state, the air pressure signal received by the pneumatic positioner is low, and the control system controls the cylinder 50 to move in the opening direction until the valve core plate 30 switch limiter detects that the valve core plate 30 is open and sends a signal to the control system. The control system then determines that the valve core plate 30 is open based on the received signal and controls the pneumatic positioner to maintain the position of the cylinder 50, keeping the valve core plate 30 in the open state. Similarly, when the valve core plate 30 needs to be closed, the control system controls the pneumatic positioner to move the cylinder 50 in the closing direction until the valve switch limiter detects that the valve core plate 30 is closed and sends a signal to the control system. The control system then determines that the valve core plate 30 is closed based on the received signal and controls the pneumatic positioner to maintain the position of the cylinder 50, keeping the valve core plate 30 closed.

[0042] According to some embodiments of the present invention, reference Figure 5 A paper gasket 60 is provided at the contact area between the first valve body 11 and the second valve body 12. The paper gasket 60 fills the gap between the first valve body 11 and the second valve body 12, providing an additional seal and reducing the possibility of fluid leakage. It also acts as a buffer, mitigating damage caused by collision or vibration between the first and second valve bodies 11, 12.

[0043] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0046] In the description of this application, “plurality” means two or more.

[0047] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0048] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0049] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0050] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A plug valve, characterized in that: include: A valve body, the valve body comprising a first valve body and a second valve body, wherein a first delivery pipe is formed in the first valve body, and a second delivery pipe is formed in the second valve body, and the first delivery pipe and the second delivery pipe can be connected; a rotating portion, the rotating portion comprising a drive shaft and a connecting member, one end of the connecting member being connected to the drive shaft, the drive shaft being adapted to drive the connecting member to rotate, and the other end of the connecting member being formed with a through hole penetrating the connecting member; a valve core plate, the valve core plate being connected to the connecting member, and the valve core plate being adapted to open or close the first delivery pipeline when the connecting member rotates; A sealing member is disposed in the through hole and is movable toward or away from the valve core plate.

2. The plug valve according to claim 1, characterized in that The sealing member comprises: elastic parts; A first supporting member, one end of which is in contact with the elastic member, and the first supporting member can move toward or away from the elastic member.

3. The plug valve according to claim 2, characterized in that The first supporting member includes a nut and a screw, one end of the screw contacts the elastic member, and the nut is arranged at the other end of the screw. When the nut rotates, the screw can move toward or away from the elastic member.

4. The plug valve according to claim 3, characterized in that The seal also includes: A second support member is provided between the elastic member and the valve core plate.

5. The plug valve according to claim 4, characterized in that The seal also includes: A washer is provided at one end of the first supporting member close to the elastic member, and the washer is provided around the first supporting member.

6. The plug valve according to claim 1, characterized in that A first groove is provided on the surface of the valve core plate facing the first delivery pipe, and a protrusion is provided at the connection between the connecting piece and the valve core plate, and the protrusion is suitable for being inserted into the first groove.

7. The plug valve according to claim 1, characterized in that A second groove is formed on the surface of the valve core plate facing the first delivery pipe. The second groove is filled with tungsten steel, and the tungsten steel is in direct contact with the pipe wall of the first delivery pipe.

8. The plug valve according to claim 7, characterized in that The pipe wall of the first delivery pipe has a third groove arranged corresponding to the second groove, and the third groove is filled with the tungsten steel. When the valve core plate closes the first delivery pipe, the tungsten steel in the second groove contacts the tungsten steel in the third groove.

9. The plug valve according to any one of claims 1 to 8, characterized in that: The plug valve also includes: A cylinder is connected to the drive shaft.

10. The plug valve according to any one of claims 1 to 8, characterized in that: A paper pad is provided at a contact portion between the first valve body and the second valve body.

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