Adjusting valve casting structure

Abstract

The invention belongs to the field of fluid control equipment, and provides a regulating valve casting structure which comprises a body, a valve rod flange and an anti-rotation plate. Wherein the body is provided with an upper cavity and a lower cavity which are separated from each other, and is also provided with a liquid inlet communicated with the upper cavity, a liquid outlet communicated with the lower cavity and an overflowing hole for communicating the upper cavity with the lower cavity; the valve rod flange is connected to the body and forms a valve rod mounting hole communicated with the upper cavity, and the valve rod mounting hole and the overflowing hole are coaxially arranged and are used for mounting an external valve rod capable of controlling the opening degree of the overflowing hole; the anti-rotation plate is arranged in the upper cavity and is connected to the body in a posture parallel to the axial direction of the overflowing hole; and the central surface of the anti-rotation plate passes through the center of the overflowing hole.

Description

Technical Field

[0001] The present application belongs to the field of fluid control equipment, and in particular, relates to a regulating valve casting structure. Background Art

[0002] In the fluid control system, the regulating valve is an important device for regulating parameters such as fluid flow and pressure. The stability and reliability of its performance have an important impact on the operation effect of the entire system. The existing regulating valve casting structure usually only has a simple upper cavity and a lower cavity, as well as a flow hole portion used to form a valve seat after processing. When the regulating valve casting of this structure is processed and used in combination with the valve stem, when the fluid enters the regulating valve from the liquid inlet, flows to the lower cavity through the flow hole opened by the valve stem and finally discharged from the liquid outlet, the fluid tends to rotate around the valve stem to form a vortex. This vortex effect not only causes the valve stem and valve body to vibrate under the impact of the fluid, reduces the stability of the valve stem and valve body, and deteriorates the linear performance of the regulating valve, but also when the fluid contains impurities (such as particulate matter, fiber, etc.), the cavity inside the valve body is severely worn under the action of the vortex, further affecting the service life of the valve body and the performance of the entire fluid control system. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a regulating valve casting structure to solve the technical problem of poor stability of regulating valves in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is: to provide a regulating valve casting structure, including: A body, forming an upper cavity and a lower cavity separated from each other, and further forming a liquid inlet connected to the upper cavity, a liquid outlet connected to the lower cavity, and a flow hole connecting the upper cavity and the lower cavity; A valve stem flange is connected to the body and forms a valve stem mounting hole connected to the upper cavity, wherein the valve stem mounting hole is coaxially arranged with the flow hole and is used to mount an external valve stem capable of controlling the opening of the flow hole; The anti-rotation plate is arranged in the upper cavity and connected to the body in a posture parallel to the axial direction of the flow hole. The center plane of the anti-rotation plate passes through the center of the flow hole.

[0005] Optionally, the anti-rotation plate and the liquid inlet are respectively arranged on opposite sides of the flow hole along the radial direction of the flow hole.

[0006] Optionally, the center plane of the anti-rotation plate passes through the center of the liquid inlet.

[0007] Optionally, the shortest distance between each point on the edge of the flow hole and the inner wall of the upper cavity is inversely proportional to the distance between each point on the edge of the flow hole and the end surface of the liquid inlet.

[0008] Optionally, the body is provided with an annular side wall for forming the upper cavity between the valve stem mounting hole and the flow hole; The inner wall cross-section of the annular side wall is composed of a first arc segment and a second arc segment that are smoothly connected to each other, wherein the centers of the first arc segment and the second arc segment are at the same height in the axial direction of the flow hole and the center position of the first arc segment is closer to the axis of the flow hole than the center position of the second arc segment.

[0009] Optionally, the radius of the first arc segment is greater than the radius of the second arc segment; one end of the first arc segment away from the second arc segment is connected to the edge of the lower port of the valve stem mounting hole, and one end of the second arc segment away from the first arc segment is tangent to the bottom surface of the upper cavity.

[0010] Optionally, the body is provided with an arc-shaped side wall for forming the lower cavity on a side facing the flow hole; The projections of the arc-shaped side wall in the axial direction of the liquid outlet and in the radial direction of the liquid outlet are respectively in arc shapes.

[0011] Optionally, a rounded transition is formed between the arc-shaped side wall and the lower end surface of the body for forming the flow hole.

[0012] Optionally, a tangent line between the inner wall of the arc-shaped side wall and the second arc segment and the axis of the flow hole form an angle of 20 to 25 degrees.

[0013] Optionally, the arc-shaped side wall and the outer wall of the annular side wall are smoothly connected by a concave connecting arc.

[0014] The beneficial effect of the regulating valve casting structure provided by the present application is that: compared with the prior art, in the regulating valve casting structure provided by the present application, since the valve stem mounting hole formed on the valve stem flange is coaxially arranged with the flow hole formed on the body, and since the anti-rotation plate arranged in the upper cavity is connected to the body in a posture parallel to the axial direction of the flow hole and the center plane of the anti-rotation plate passes through the center of the flow hole, when the fluid enters the upper cavity from the liquid inlet, the path conditions for the swirl flow are cut off due to the blocking effect of the anti-rotation plate, thereby avoiding the generation of swirl flow, and the fluid with reduced swirl effect can not only be more stable and fast Entering the lower cavity from the flow hole and being discharged from the liquid outlet can also effectively reduce the vibration of the regulating valve caused by the swirl effect. At the same time, the anti-swirl plate also constitutes a reinforcing rib structure, which significantly increases the rigidity and strength of the main body. Since the anti-swirl plate avoids the occurrence of swirl phenomenon, when the fluid flows from the upper cavity through the flow hole to the lower cavity, the flow path becomes shorter, which effectively reduces the length of the wear path of impurities in the fluid on the inner surface of the main body, weakens the grinding effect, and significantly reduces the wear of impurities in the fluid on the main body. This enables the regulating valve casting structure provided in the present application to remain stable for a long time, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic diagram of the overall structure of the regulating valve casting structure in the embodiment of the present application; Figure 2 This is a schematic diagram of the top view of the structure of the regulating valve casting in the embodiment of the present application; Figure 3 For along Figure 2 The cross-sectional structure diagram along the AA line; Figure 4 For along Figure 3 The cross-sectional structure diagram of the middle BB line; Figure 5 For along Figure 2 Cross-sectional structural diagram along the CC line.

[0017] Among them, the figure numerals in the figure are: 100, main body; 101, upper cavity; 102, lower cavity; 103, liquid inlet; 104, liquid outlet; 105, flow hole; 106, annular side wall; 1061, first arc segment; 1062, second arc segment; 107, arc-shaped side wall; 108, rounded transition; 109, connecting arc; 200, valve stem flange; 201, valve stem mounting hole; 300, anti-rotation plate; 400, angle. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0019] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the 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.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] Please also read Figures 1 to 5 Now, a regulating valve casting structure provided in an embodiment of the present application is described. The regulating valve casting structure includes a body 100, a valve stem flange 200 and an anti-rotation plate 300. Among them: The main body 100 forms an upper cavity 101 and a lower cavity 102 which are spaced apart, and also forms a liquid inlet 103 connected to the upper cavity 101, a liquid outlet 104 connected to the lower cavity 102, and a flow hole 105 connecting the upper cavity 101 and the lower cavity 102; the valve stem flange 200 is connected to the main body 100 and forms a valve stem mounting hole 201 connected to the upper cavity 101, the valve stem mounting hole 201 is coaxially arranged with the flow hole 105 and is used to install an external valve stem capable of controlling the opening of the flow hole 105; the anti-rotation plate 300 is arranged in the upper cavity 101 and is connected to the main body 100 in a posture parallel to the axial direction of the flow hole 105, and the center plane of the anti-rotation plate 300 passes through the center of the flow hole 105, and here, the anti-rotation plate 300 and the main body 100 are an integrally cast structure.

[0023] According to the above structure provided in the present embodiment, in the regulating valve casting structure provided in the present embodiment, since the valve stem mounting hole 201 formed on the valve stem flange 200 is coaxially arranged with the flow hole 105 formed on the body 100, and since the anti-rotation plate 300 arranged in the upper cavity 101 is connected to the body 100 in a posture parallel to the axial direction of the flow hole 105 and the center plane of the anti-rotation plate 300 passes through the center of the flow hole 105, when the fluid enters the upper cavity 101 from the liquid inlet 103, due to the blocking effect of the anti-rotation plate 300, the path conditions for the swirl flow are cut off, thereby avoiding the generation of the swirl flow, and the fluid with reduced swirl effect can not only be more stable and fast from the flow hole 105 enters the lower cavity 102 and is discharged from the liquid outlet 104, which can also effectively reduce the vibration of the regulating valve caused by the swirl effect. At the same time, the anti-swirl plate 300 also constitutes a reinforcing rib structure, which significantly increases the rigidity and strength of the main body 100. Since the anti-swirl plate 300 avoids the occurrence of swirl phenomenon, when the fluid flows from the upper cavity 101 to the lower cavity 102 through the flow hole 105, the flow path becomes shorter, which effectively reduces the wear path length of the impurities in the fluid on the inner surface of the main body 100, weakens the grinding effect, and significantly reduces the wear of the impurities in the fluid on the main body 100. This enables the regulating valve casting structure provided in this embodiment to remain stable for a long time, which is far superior to the prior art.

[0024] In another embodiment of the present application, please refer to Figures 1 to 5 , the anti-rotation plate 300 and the liquid inlet 103 are respectively arranged on opposite sides of the flow hole 105 along the radial direction of the flow hole 105. According to the above structure provided in this embodiment, the anti-rotation plate 300 and the liquid inlet 103 arranged on opposite sides of the flow hole 105 can make the most of the space of the upper cavity 101 and enable the anti-rotation plate 300 to block the position where the fluid is most likely to generate a swirl flow, which can further avoid the vibration of the body 100 and is conducive to further improving the stability of the structure of the regulating valve casting in this embodiment.

[0025] In another embodiment of the present application, please refer to Figures 1 to 5 , the center plane of the anti-rotation plate 300 passes through the center of the liquid inlet 103. According to the above structure provided in this embodiment, the center plane of the anti-rotation plate 300 passes through the center of the liquid inlet 103, so that the two sides of the anti-rotation plate 300 have the same distance from the center of the liquid inlet 103, so that the fluids on both sides of the anti-rotation plate 300 can form the same force on the anti-rotation plate 300, which is beneficial to further avoid the vibration of the body 100 and to further improve the stability of the structure of the regulating valve casting in this embodiment; at the same time, it is beneficial to improve the filling property of the steel liquid during the casting of the body 100 and to improve the stability of the casting mold, thereby improving the quality of the regulating valve casting of this application.

[0026] In another embodiment of the present application, please refer to Figures 1 to 5 , the shortest distance between each point on the edge of the flow hole 105 and the inner wall of the upper cavity 101 is inversely proportional to the distance between each point on the edge of the flow hole 105 and the end face of the liquid inlet 103. According to the above structure provided in this embodiment, the shortest distance between each point on the edge of the flow hole 105 and the inner wall of the upper cavity 101 can gradually decrease as the distance between each point on the edge of the flow hole 105 and the end face of the liquid inlet 103 gradually increases, so that after the fluid enters the upper cavity 101 from the liquid inlet 103, a more uniform fluid flow distribution can be formed at the peripheral wall of the flow hole 105, which is conducive to the fluid in the upper cavity 101 passing through the flow hole 105 more evenly, reducing the vibration of the finished control valve, and thus also conducive to further improving the stability of the control valve casting structure in this embodiment, and further improving the hydraulic performance of the control valve.

[0027] In another embodiment of the present application, please refer to Figures 1 to 5 The body 100 is provided with an annular side wall 106 for forming the upper cavity 101 between the valve stem mounting hole 201 and the flow hole 105; the inner wall section of the annular side wall 106 is composed of a first arc segment 1061 and a second arc segment 1062 which are smoothly connected to each other, wherein the centers of the first arc segment 1061 and the second arc segment 1062 are at the same height in the axial direction of the flow hole 105 and the center position of the first arc segment 1061 is closer to the axis of the flow hole 105 than the center position of the second arc segment 1062. According to the above structure provided in this embodiment, the arc shape formed by the annular side wall 106 in the axial direction of the liquid inlet 103 can improve the structural strength of the body 100 itself on the one hand, and can also make the fluid flow more evenly in the upper cavity 101 on the other hand, thereby facilitating further improving the stability of the structure of the regulating valve casting in this embodiment.

[0028] In another embodiment of the present application, please refer to Figures 1 to 5 , the radius of the first arc segment 1061 is greater than the radius of the second arc segment 1062; the end of the first arc segment 1061 away from the second arc segment 1062 is connected to the lower end edge of the valve stem mounting hole 201, and the end of the second arc segment 1062 away from the first arc segment 1061 is tangent to the bottom surface of the upper cavity 101. According to the above structure provided in this embodiment, the annular side wall 106 adopts the above shape, which is not only conducive to improving its own structural strength, but also allows the fluid to flow more evenly in the upper cavity 101, thereby further improving the stability and hydraulic performance of the regulating valve casting structure in this embodiment.

[0029] In another embodiment of the present application, please refer to Figures 1 to 5The body 100 is provided with an arc-shaped side wall 107 for forming the lower cavity 102 on the side facing the flow hole 105; the projections of the arc-shaped side wall 107 in the axial direction of the liquid outlet 104 and in the radial direction of the liquid outlet 104 are respectively in the shape of an arc. According to the above structure provided in this embodiment, the arc-shaped side wall 107 for forming the lower cavity 102 can guide the fluid in the axial direction and radial direction of the liquid outlet 104, which is conducive to the fluid being discharged from the liquid outlet 104 more evenly and smoothly, thereby further improving the stability of the structure of the regulating valve casting in this embodiment.

[0030] In another embodiment of the present application, please refer to Figures 1 to 5 , a rounded transition 108 is formed between the arc-shaped side wall 107 and the lower end surface of the body 100 for forming the flow hole 105. For the sake of convenience, the rounded transition 108 is R20 as an example for explanation in this embodiment. According to the above structure provided in this embodiment, the rounded transition 108 formed between the arc-shaped side wall 107 and the flow hole 105 can further provide a flow guide for the fluid, which is beneficial to further improve the stability of the casting structure of the regulating valve in this embodiment. At the same time, the rounded transition 108 reduces the stress concentration phenomenon on the casting structure, which is beneficial to improve the compressive strength of the regulating valve of this application, and is also beneficial to the flow of molten steel during casting, reducing the occurrence of casting defects.

[0031] In another embodiment of the present application, please refer to Figures 1 to 5 The inner wall of the arc side wall 107 and the tangent of the second arc segment 1062 form an angle 400 with the axis of the flow hole 105, and the angle 400 is 20-25 degrees, and the preferred angle 400 is 20.6 degrees. In this way, the body 100 forms an inverted gourd-shaped structure on the cross section perpendicular to the fluid flow direction of the liquid inlet 103 (see the main Figure 5 ), which significantly improves the structural stability and pressure resistance of the control valve.

[0032] In another embodiment of the present application, please refer to Figures 1 to 5 The arc-shaped side wall 107 is smoothly connected to the outer wall of the annular side wall 106 by the concave connecting arc 109, which saves casting raw materials on the one hand, and is conducive to forming an energy-absorbing structure when the main body 100 is under pressure on the other hand, thereby improving the adaptability of elastic strain, especially in the cooling process of casting molding, it has good adaptability to shrinkage stress, avoids the phenomenon of cracking of the main body 100 caused by tensile stress concentration between the entities at the joint of the upper cavity 101 and the lower cavity 102 during the casting molding cooling process of the regulating valve casting, and ensures the quality of the regulating valve casting.

[0033] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A regulating valve casting structure, characterized in that: include: A body (100) is formed with an upper cavity (101) and a lower cavity (102) separated from each other, and further formed with a liquid inlet (103) connected to the upper cavity (101), a liquid outlet (104) connected to the lower cavity (102), and a flow hole (105) connecting the upper cavity (101) and the lower cavity (102); a valve stem flange (200) connected to the body (100) and forming a valve stem mounting hole (201) connected to the upper cavity (101); the valve stem mounting hole (201) is coaxially arranged with the flow hole (105) and is used for mounting an external valve stem capable of controlling the opening of the flow hole (105); The anti-rotation plate (300) is arranged in the upper cavity (101) and connected to the main body (100) in a posture parallel to the axial direction of the flow hole (105), and the center plane of the anti-rotation plate (300) passes through the center of the flow hole (105).

2. The regulating valve casting structure according to claim 1, characterized in that: The anti-rotation plate (300) and the liquid inlet (103) are respectively arranged on opposite sides of the flow hole (105) along the radial direction of the flow hole (105).

3. The regulating valve casting structure according to claim 2, characterized in that: The center plane of the anti-rotation plate (300) passes through the center of the liquid inlet (103).

4. The regulating valve casting structure according to claim 3, characterized in that: The shortest distance between each point on the edge of the flow hole (105) and the inner wall surface of the upper cavity (101) is inversely proportional to the distance between each point on the edge of the flow hole (105) and the end surface of the liquid inlet (103).

5. The regulating valve casting structure according to claim 1, characterized in that: The body (100) is provided with an annular side wall (106) for forming the upper cavity (101) between the valve stem mounting hole (201) and the flow hole (105); The inner wall cross-section of the annular side wall (106) is composed of a first circular arc segment (1061) and a second circular arc segment (1062) which are smoothly connected to each other, wherein the centers of the first circular arc segment (1061) and the second circular arc segment (1062) are at the same height in the axial direction of the flow hole (105), and the center position of the first circular arc segment (1061) is closer to the axis of the flow hole (105) than the center position of the second circular arc segment (1062).

6. The regulating valve casting structure according to claim 5, characterized in that: The radius of the first arc segment (1061) is greater than the radius of the second arc segment (1062); one end of the first arc segment (1061) away from the second arc segment (1062) is connected to the edge of the lower port of the valve stem mounting hole (201), and one end of the second arc segment (1062) away from the first arc segment (1061) is tangent to the bottom surface of the upper cavity (101).

7. The regulating valve casting structure according to claim 5, characterized in that: The body (100) is provided with an arc-shaped side wall (107) for forming the lower cavity (102) on a side facing the flow hole (105); The projections of the arc-shaped side wall (107) in the axial direction of the liquid outlet (104) and in the radial direction of the liquid outlet (104) are respectively in the shape of circular arcs.

8. The regulating valve casting structure according to claim 7, characterized in that: A rounded transition (108) is formed between the arc-shaped side wall (107) and the lower end surface of the body (100) for forming the flow hole (105).

9. The regulating valve casting structure according to claim 7, characterized in that: A tangent line between the inner wall of the arc-shaped side wall (107) and the second arc segment (1062) and the axis of the flow hole (105) forms an angle (400), and the angle (400) is 20 to 25 degrees.

10. The regulating valve casting structure according to claim 9, characterized in that: The arc-shaped side wall (107) and the outer wall of the annular side wall (106) are smoothly connected by an inwardly concave connecting arc (109).

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