Valve

Abstract

The utility model belongs to the technical field of fluid control, and particularly relates to a valve, which aims to solve the problem that a shaft neck of the valve is easy to damage, and comprises a valve body, the shaft neck is arranged on the valve body, and the shaft neck is provided with a central shaft hole used for installing a valve core rotating shaft. The shaft neck side wall is provided with an outer side face of a plurality of side edges formed by protruding the wall thickness outwards, and the side edges extend in the length direction of the shaft neck. The shaft necks are located at the two radial ends of a valve body runner, the ends, away from the valve body, of the shaft necks are connected with a flange plate, and a plurality of through holes are formed in the flange plate in the circumferential direction of the flange plate. The thickness of the joint part of the journal and the flange plate is gradually increased from the journal to the flange plate, and the outer side surface of the journal between the adjacent side edges is a plane or a smooth curved surface. The utility model has the effect that the shaft neck of the valve is not easy to damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid control, and more specifically relates to a valve. Background Art

[0002] A valve is a mechanical component that is often installed in a piping system and has functions such as isolating pipelines and regulating flow.

[0003] In the related art, the valve is composed of a valve body, a valve core, a valve core shaft, and an actuator. The valve core shaft is assembled in the shaft neck of the valve body. The actuator drives the valve core shaft to rotate to control the angle of the valve core, thereby realizing the opening and closing of the valve and flow regulation. However, during the use of the valve, due to the frequent force on the valve shaft neck, the valve shaft neck may be damaged due to fatigue, overload, etc., which may easily cause the valve to fail to close and flood farmland or other important facilities. Serious accidents need to be improved. Utility Model Content

[0004] In order to prevent the journal of the valve from being damaged, the utility model provides a valve.

[0005] The utility model provides a valve, which adopts the following technical solution:

[0006] A valve comprises a valve body, wherein a shaft neck is arranged on the valve body, the shaft neck has a central shaft hole for installing a valve core shaft, and the side wall of the shaft neck has an outer side surface with multiple side edges formed by protruding outward from the wall thickness, and the side edges extend along the length direction of the shaft neck.

[0007] By adopting the above technical solution, the outer wall of the journal is convex to form an outer side surface with multiple side edges, so that the strength of the journal is greatly improved, making the journal of the valve less likely to be damaged. The design with multiple side edges ensures that the journal has excellent strength, so that the corresponding casting process will not become too complicated, the sand cleaning process after casting is also relatively simple, and the input of raw materials does not need to be greatly increased, which is conducive to reducing the casting cost of the valve and reducing the impact of the production process on the environment.

[0008] As a further preference, the outer side surface of the journal between adjacent side edges is a plane or a smooth curved surface.

[0009] By adopting the above technical solution, the journal with a flat or smooth outer surface is conducive to sand cleaning after casting, which provides a strong guarantee for the appearance quality of the valve.

[0010] As a further preference, the journal is located at two radial ends of the valve body flow channel, one end of the journal away from the valve body is connected to a flange, and the flange is provided with a plurality of through holes along its circumference.

[0011] By adopting the above technical solution, the flange with the through hole can be used to connect the actuator, thereby achieving stable installation of the valve body and the actuator.

[0012] As a further preference, the thickness of the connecting portion between the shaft neck and the flange gradually increases from the shaft neck toward the flange.

[0013] By adopting the above technical solution, since the actuator will generate large torque during use, it is easy to damage the shaft neck; for this reason, the thickness of the connection between the shaft neck and the flange is gradually increased from the shaft neck toward the flange, which can improve the strength and rigidity of the connection between the shaft neck and the flange, improve the torsional resistance of the shaft neck, and make the shaft neck less likely to be damaged.

[0014] As a further preference, a through groove is provided on the end surface of the flange along its radial direction.

[0015] By adopting the above technical solution, on the one hand, the through groove can be used to position the actuator, so that the actuator can be stably installed on the flange and is not easy to loosen. On the other hand, after the actuator is installed on the flange, a gap can be left between the installed actuator and the through groove, so that the through groove can be used for drainage when the valve leaks, preventing water from entering the electric actuator, so that the leakage fault is not easy to damage the electric actuator; at the same time, the through groove can also prevent the problem of water vapor freezing at the shaft neck in winter, which causes the valve to be difficult to open and close or unable to open and close.

[0016] As a further preference, there are multiple through grooves, and the multiple through grooves are distributed in a circular array in the circumferential direction of the flange.

[0017] By adopting the above technical solution, the through grooves distributed in the disk array can provide more positioning points, thereby increasing the positioning accuracy between the flange and the actuator.

[0018] As a further preference, the central axis hole at one end of the journal connecting flange is a stepped hole, and a threaded hole is provided on the end surface of the central axis hole.

[0019] By adopting the above technical solution, the stepped hole can be used as the installation and positioning basis for structural parts such as sleeves / bushings / sealing pads; the threaded holes can be used for the installation of screws, so that the screws can stably lock the structural parts on the valve body, thereby achieving stable assembly of the valve.

[0020] As a further preference, the valve is a butterfly valve or other valve having a valve core that opens and closes in a rotating manner.

[0021] By adopting the above technical solution, most valves that open and close the valve core by rotation need to install an actuator on the shaft neck, and the actuator will generate a large torque on the shaft neck during operation; for this reason, the shaft neck in the present design is convexly formed with an outer side surface with multiple side edges on the outer wall, which can improve the shaft neck's anti-twisting ability and solve the problem of shaft neck damage caused by excessive torque in traditional shaft necks.

[0022] As a further preference, an inner wall of one end of the journal close to the valve body protrudes circumferentially to form a limiting protrusion.

[0023] By adopting the above technical solution, the provided limiting protrusion can axially limit the valve core shaft installed in the shaft neck, and can also support and limit the sealing structures such as O-rings and sealing sleeves installed on the circumference of the valve core shaft.

[0024] In summary, the utility model at least includes the following beneficial technical effects:

[0025] 1. The outer wall of the journal is convex to form an outer side surface with multiple side edges, which greatly improves the strength of the journal and makes the journal of the valve less likely to be damaged.

[0026] 2. The multi-sided journal design ensures that the journal has excellent strength while preventing the corresponding casting process from becoming too complicated. The sand cleaning process after casting is also relatively simple, and the input of raw materials does not need to be significantly increased, which is conducive to reducing the casting cost of the valve and the impact of the production process on the environment.

[0027] 3. Since the thickness of the connection between the shaft neck and the flange gradually increases from the shaft neck toward the flange, the strength and rigidity of the connection between the shaft neck and the flange are greatly improved, and the connection between the shaft neck and the flange is unlikely to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of the valve body of the valve of the embodiment of the utility model;

[0029] Figure 2 It is a side view of the valve body of the valve of the embodiment of the utility model;

[0030] Figure 3 It is a top view of the valve body of the valve of the embodiment of the utility model;

[0031] Figure 4 yes Figure 3 Section view of the AA plane.

[0032] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0033] 1. Valve body; 2. Shaft neck; 2-1. Center shaft hole; 2-2. Side edge; 2-3. Threaded hole; 3. Flange; 3-1. Through hole; 3-2. Through groove; 4. Limiting protrusion. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "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 invention 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 invention.

[0036] 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The following is combined with Figure 1-4 The utility model is described in further detail.

[0039] The utility model embodiment discloses a valve.

[0040] Reference Figure 1-4The valve comprises a valve body 1, on which a shaft neck 2 is provided, and the shaft neck 2 has a central shaft hole 2-1 for mounting a valve core shaft; the side wall of the shaft neck 2 has an outer side surface with a plurality of side edges 2-2 formed by the wall thickness protruding outward, and the side edges 2-2 extend along the length direction of the shaft neck 2. The valve body 1 is provided with a valve core, a valve core shaft and an actuator, which are prior art and are not shown in the drawings.

[0041] Since the journal 2 protrudes outward to form an outer side surface with multiple side edges 2-2, the strength of the journal 2 is greatly improved. Compared with the traditional method of increasing the diameter of the journal 2 and adding reinforcing ribs, this design can save raw materials while ensuring that the journal 2 has sufficient strength. The corresponding casting process will not become too complicated, the sand cleaning process after casting is also relatively simple, and the input of raw materials does not need to be greatly increased, which is conducive to reducing the casting cost of the valve, improving production efficiency, and reducing the impact of the production process on the environment.

[0042] Furthermore, to facilitate the demoulding of the valve body 1 and the sand removal after casting, the outer side surface of the journal 2 between adjacent side edges 2-2 is a plane or a smooth curved surface. Preferably, the areas of the multiple outer side surfaces of the journal 2 in the circumferential direction are equal.

[0043] Furthermore, the journal 2 is located at both radial ends of the flow channel of the valve body 1. In the present embodiment, the journal 2 is through-connected at both ends; in other embodiments, the end of the journal 2 away from the flow channel of the valve body 1 may also be closed.

[0044] Further, such as Figure 3-4 As shown, one end of the journal 2 away from the valve body 1 is connected to a flange 3, and the flange 3 is provided with a plurality of through holes 3-1 along its circumference. The thickness of the connecting portion between the journal 2 and the flange 3 gradually increases from the journal 2 toward the flange 3, so that the strength of the connecting portion between the journal 2 and the flange 3 is greatly improved and it is difficult to be damaged.

[0045] Furthermore, a through groove 3-2 for positioning the actuator is provided on the end surface of the flange 3 along its radial direction. Preferably, a plurality of through grooves 3-2 are provided, and the plurality of through grooves 3-2 are distributed in a circumferential array in the circumferential direction of the flange 3. A gap is left between the actuator installed on the flange 3 and the through groove 3-2. The through groove 3-2 can be used for drainage when the valve leaks, preventing water from entering the electric actuator, so that the electric actuator is not easily damaged by the leakage fault; at the same time, the through groove 3-2 can also prevent the problem of the valve being difficult to open and close or unable to open and close caused by water vapor freezing at the journal 2 in winter.

[0046] Furthermore, the central shaft hole 2-1 at one end of the shaft neck 2 connected to the flange 3 is a stepped hole, and threaded holes 2-3 are arranged on the end surface of the central shaft hole 2-1, and the threaded holes 2-3 are distributed in a circumferential array in the circumferential direction of the shaft neck 2. The arranged stepped hole can be used for the installation and positioning of the structural parts such as the shaft sleeve / bushing / sealing gasket; the threaded hole 2-3 can be used for the installation of the screws, so that the screws can stably lock the valve structural parts on the valve body 1, so as to realize the stable assembly of the valve.

[0047] Furthermore, a limiting protrusion 4 protrudes circumferentially from the inner wall of one end of the shaft neck 2 close to the valve body 1. The limiting protrusion 4 can axially limit the valve core shaft installed in the shaft neck 2, and can also support and limit sealing structures such as O-rings and sealing sleeves installed on the circumferential side of the valve core shaft.

[0048] It should be noted that the valve is a butterfly valve or other valve having a valve core that is opened and closed in a rotating manner; for example, the valve can be a ball valve, an eccentric semi-ball valve, and the like.

[0049] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A valve, characterized in that: The valve body (1) comprises a shaft neck (2), the shaft neck (2) having a central shaft hole (2-1) for mounting a valve core shaft, the side wall of the shaft neck (2) having an outer side surface with a plurality of side edges (2-2) formed by outward protrusion of the wall thickness, and the side edges (2-2) extending along the length direction of the shaft neck (2); The shaft neck (2) is located at both radial ends of the flow channel of the valve body (1); one end of the shaft neck (2) away from the valve body (1) is connected to a flange (3); and the thickness of the connecting portion between the shaft neck (2) and the flange (3) gradually increases from the shaft neck (2) toward the flange (3).

2. A valve according to claim 1, characterized in that: The outer side surface of the journal (2) between adjacent side edges (2-2) is a plane or a smooth curved surface.

3. A valve according to claim 2, characterized in that: The flange (3) is provided with a plurality of through holes (3-1) along its circumference.

4. A valve according to claim 3, characterized in that: A through groove (3-2) is provided on the end surface of the flange (3) along its radial direction.

5. A valve according to claim 4, characterized in that: A plurality of through grooves (3-2) are provided, and the plurality of through grooves (3-2) are distributed in a circular array in the circumferential direction of the flange (3).

6. A valve according to claim 3, characterized in that: The central axis hole (2-1) at one end of the shaft neck (2) connected to the flange (3) is a stepped hole, and a threaded hole (2-3) is provided on the end surface of the central axis hole (2-1).

7. A valve according to any one of claims 1 to 6, characterized in that: The valve is a butterfly valve or other valve having a valve core that opens and closes in a rotating manner.

8. A valve according to any one of claims 1 to 6, characterized in that: The inner wall of one end of the journal (2) close to the valve body (1) protrudes in the circumferential direction to form a limiting protrusion (4).

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