Three-way ball valve flange forge piece convenient to machine

Abstract

The three-way ball valve flange forge piece convenient to machine comprises a first flange plate and a second flange plate which are coaxially arranged, the first flange plate and the second flange plate are fixedly connected through a connecting pipe, a plurality of first connecting holes are evenly formed in the first flange plate in the circumferential direction, and a plurality of second connecting holes are evenly formed in the second flange plate in the circumferential direction. A plurality of first connecting holes are evenly formed in the first flange plate in the circumferential direction, a plurality of second connecting holes are evenly formed in the second flange plate in the circumferential direction, a plurality of first positioning grooves and a plurality of second positioning grooves are formed in the peripheral face of the first flange plate and the peripheral face of the second flange plate respectively, the first positioning grooves and the first connecting holes are distributed in a one-to-one correspondence mode, and the second positioning grooves and the second connecting holes are distributed in a one-to-one correspondence mode. A sealing ring groove and a limiting hole are formed in one end face of the flange plate, and one side of the limiting hole is communicated with the sealing ring groove. The three-way ball valve flange forge piece convenient to machine is good in sealing performance and beneficial to improving the machining position precision.

Description

Technical Field

[0001] The utility model relates to a flange forging, in particular to a three-way ball valve flange forging which is convenient for processing. Background Technique

[0002] In the actual production process, for the convenience of installation and maintenance, sometimes the two ports arranged in a straight line on the three-way ball valve are set in the form of port flanges, and then the port flanges are connected to the valve body or other components through bolts. In order to achieve bolt connection, generally, an installation hole for connecting with the three-way ball valve body is provided at one end of the port flange, and a connection hole for connecting with an external component is provided at the other end. To ensure the normal use of the three-way ball valve after installation, higher requirements are imposed on the position accuracy of the installation hole and the connection hole during production.

[0003] A Chinese patent with the publication number CN 217056712 U applied by the company earlier discloses a three-way ball valve flange forging. The technical solution includes an installation flange, a connecting pipe, and a connecting flange connected in sequence; the installation flange is provided with a plurality of rotationally symmetric first positioning grooves for positioning the drilling of the installation hole; the connecting flange is provided with a plurality of rotationally symmetric second positioning grooves for positioning the drilling of the connecting hole. The installation flange is used to connect the three-way ball valve body, and the connecting flange is used to connect external components; by setting the first positioning groove and the second positioning groove, the processing difficulty of the installation hole and the connecting hole is reduced, and the position accuracy of the installation hole and the connecting hole is also improved; and by setting the convex strip, the clamping stability and reliability of the flange forging are improved. However, the first positioning groove, the second positioning groove, and the convex strip in this technical solution need to be removed after processing, which increases additional processes and prolongs the processing and manufacturing time of the entire flange forging, that is, reduces the production and processing efficiency. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a three-way ball valve flange forging which is convenient for processing, has good sealing performance, and is beneficial to improving the processing position accuracy.

[0005] To solve the above problems, the technical solution adopted by the utility model is as follows:

[0006] A three-way ball valve flange forging that is convenient for processing, comprising a first flange and a second flange arranged coaxially. The first flange and the second flange are fixedly connected by a connecting pipe. A plurality of first connecting holes are circumferentially and uniformly arranged on the first flange, and a plurality of second connecting holes are circumferentially and uniformly arranged on the second flange. A plurality of first positioning grooves and a plurality of second positioning grooves are respectively arranged on the outer circumferential surfaces of the first flange and the second flange. The plurality of first positioning grooves and the plurality of first connecting holes are respectively distributed in one-to-one correspondence, and the plurality of second positioning grooves and the plurality of second connecting holes are respectively distributed in one-to-one correspondence. A sealing ring groove and a limiting hole are formed on the end surface of the first flange, and one side of the limiting hole is communicated with the sealing ring groove.

[0007] Further, the central axes of the corresponding first connecting holes and the central axes of the second connecting holes coincide in the projection on the same horizontal plane along the radial direction of the first flange.

[0008] Further, the cross-section of the sealing ring groove is a stepped structure, including a first stepped groove and a second stepped groove that are communicated. The cross-sections of the first stepped groove and the second stepped groove are both right-angled trapezoidal structures, and the small end of the right-angled trapezoidal structure is located at one end close to the connecting pipe, and the large end is located at one end far from the connecting pipe.

[0009] Further, the limiting hole is communicated with the sealing ring groove through a connecting groove, and the hole depth of the limiting hole is greater than the groove depth of the connecting groove.

[0010] Further, the central axes of the corresponding first positioning grooves and the central axes of the second positioning grooves coincide in the projection on the same horizontal plane along the radial direction of the first flange.

[0011] Further, the first positioning groove and the second positioning groove are both arranged along the axial direction of the connecting pipe. The first positioning groove penetrates through the two end faces of the first flange, and the second positioning groove penetrates through the two end faces of the second flange.

[0012] Further, a positioning boss is arranged on the end face of the second flange. The cross-section of the positioning boss is an isosceles trapezoidal structure, and the inner diameter of the positioning boss is greater than the inner diameter of the second flange.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the present utility model, by arranging the first positioning groove and the second positioning groove on the outer circumferential surfaces of the first flange and the second flange, it assists the drill bit in positioning, improves the drilling position accuracy and the drilling operation stability; and the first positioning groove and the second positioning groove are arranged on the outer circumferential surface, which has no influence on the flange forging; in addition, by arranging the sealing ring groove, the sealing performance of the connection between the flange forging and the valve body is improved, and by arranging the limiting hole, a dual effect is achieved, that is, improving the clamping stability of the clamping tooling and improving the reliability of the installation of the sealing ring. Description of the Drawings

[0014] Figure 1The front view of a three-way ball valve flange forging that is easy to process according to the present utility model;

[0015] Figure 2 is Figure 1 the schematic cross-sectional structure diagram taken along the A-A direction in

[0016] Figure 3 is Figure 2 the enlarged partial structure diagram at B in

[0017] Among them, 1 is flange plate one; 11 is limit hole; 12 is connection hole one; 13 is sealing ring groove; 131 is step groove one; 132 is step groove two; 14 is positioning groove one; 15 is connection groove; 2 is flange plate two; 21 is connection hole two; 22 is positioning groove two; 23 is positioning boss; 3 is connecting pipe. Specific implementation manner

[0018] The present utility model will be further described in detail below with reference to the drawings and specific implementation manners.

[0019] It should be noted that in the description of the technical solution of the present utility model, in order to clearly describe the technical features of the present utility model, some orientation words used, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc. are all in accordance with the orientation of the drawings of the present utility model.

[0020] Embodiment

[0021] As Figure 1 and Figure 2 shown, a three-way ball valve flange forging that is easy to process in this embodiment includes coaxially arranged flange plate one 1 and flange plate two 2, and flange plate one 1 and flange plate two 2 are fixedly connected by connecting pipe 3. A plurality of connection holes one 12 are circumferentially and uniformly arranged on flange plate one 1, and connection holes one 12 penetrate through the two end faces of flange plate one 1, which is convenient for connecting with the valve body through bolts. A plurality of connection holes two 21 are circumferentially and uniformly arranged on flange plate two 2, and connection holes two 21 penetrate through the two end faces of flange plate two 2, which is convenient for connecting with external components through bolts.

[0022] In order to improve the stability of drill bit drilling and the position accuracy of drilling, in this embodiment, a plurality of positioning grooves one 14 and positioning grooves two 22 are respectively provided on the outer circumferential surfaces of flange plate one 1 and flange plate two 2, and a plurality of positioning grooves one 14 and a plurality of connection holes one 12 are distributed in one-to-one correspondence, and a plurality of positioning grooves two 22 and a plurality of connection holes two 21 are distributed in one-to-one correspondence (refer to Figure 1). With this structural design, only positioning columns need to be correspondingly arranged on one side of the drill bit. When the drill bit performs drilling operations, the positioning columns are located in the corresponding positioning groove one 14 or positioning groove two 22, so as to achieve the purpose of improving the position accuracy and drilling stability of the drill bit. The positioning groove one 14 and the positioning groove two 22 have the same structure, and their cross-sections are both semi-circular arcs, which is convenient for cooperation with the positioning columns. In this embodiment, both the positioning groove one 14 and the positioning groove two 22 are arranged on the outer peripheral surfaces of the flange one 1 and the flange two 2. The positioning groove one 14 and the positioning groove two 22 are both arranged along the axial direction of the connecting pipe 3. The positioning groove one 14 penetrates through the two end faces of the flange one 1, and the positioning groove two 22 penetrates through the two end faces of the flange two 2. With this design, not only is the processing difficulty low, but it also neither affects the structural strength of the flange forging nor affects the sealing performance of the connection of the flange forging. Therefore, there is no need to remove it after the drilling process is completed, saving the processing procedures and processing time.

[0023] In addition, in this embodiment, the central axes of the corresponding connection holes one 12 coincide with the projections of the central axes of the connection holes two 21 on the same horizontal plane along the radial direction of the flange one 1. The central axes of the corresponding positioning groove one 14 and the positioning groove two 22 coincide with the projections of the central axes of the positioning groove one 14 and the positioning groove two 22 on the same horizontal plane along the radial direction of the flange one 1.

[0024] Meanwhile, in order to improve the sealing performance of the connection between the flange forging and the valve body, a sealing ring groove 13 is provided on the end face of the flange one 1 in this embodiment. As Figure 3 shown, the cross-section of the sealing ring groove 13 is a stepped structure, including a connected stepped groove one 131 and a stepped groove two 132. The cross-sections of the stepped groove one 131 and the stepped groove two 132 are both right trapezoidal structures, and the small ends of the right trapezoidal structures are located at the end close to the connecting pipe 3, and the large ends are located at the end far from the connecting pipe 3, that is, the large ends penetrate through the end face of the flange one 1. The hypotenuses of the stepped groove one 131 and the stepped groove two 132 are on the same side. With this design, the size of the opening of the stepped groove one 131 and the stepped groove two 132 is larger than the size of the groove bottom. When cooperating with the sealing ring for installation, the sealing ring is easier to align and snap in. At the same time, the sealing ring groove 13 adopts a stepped structure, and can achieve double sealing through the cooperation of the stepped groove one 131 and the stepped groove two 132 with the sealing ring, making the sealing effect more remarkable.

[0025] In this embodiment, a limiting hole 11 is further recessed on the end face of the first flange 1. The limiting hole 11 is located inside the sealing ring groove 13. In this embodiment, two limiting holes 11 are evenly distributed along the circumferential direction of the first flange 1, and one side of the limiting hole 11 is communicated with the sealing ring groove 13. Specifically, the limiting hole 11 is communicated with the sealing ring groove 13 through a connecting groove 15, and the depth of the limiting hole 11 is greater than the depth of the connecting groove 15. Specifically, in this embodiment, the cross-section of the limiting hole 11 is circular. With this design, when clamping and fixing the flange forging, only a clamping post adapted to the limiting hole 11 needs to be correspondingly arranged on the clamping tooling. During clamping, the clamping post is clamped with the limiting hole 11, improving the stability and reliability of clamping, thereby improving the position accuracy during machining and preventing the flange forging from circumferentially moving during the machining process. In addition, the designed limiting hole 11 in this embodiment can not only be used in cooperation with the clamping tooling, but also be used in cooperation with the sealing ring. That is, a clamping strip adapted to the limiting hole 11 is correspondingly arranged inside the sealing ring. When the sealing ring is installed into the above-mentioned sealing ring groove 13, the clamping strip on it is clamped into the limiting hole 11, further improving the reliability of the sealing ring installation, making it difficult for the sealing ring to fall off from the sealing ring groove 13 when the first flange 1 and the valve body are disassembled and assembled; at the same time, it can also prevent the sealing ring from circumferentially moving due to being squeezed.

[0026] A positioning boss 23 is arranged on the end face of the second flange 2 in this embodiment. The cross-section of the positioning boss 23 is an isosceles trapezoid structure. The large end of the isosceles trapezoid structure is connected to the end face of the second flange 2. A groove adapted to the above-mentioned positioning boss 23 is arranged on the connecting face of the external component. With this structural design, it is easier for the positioning boss 23 and the groove of the external component to achieve position alignment and engagement. And in this embodiment, the inner diameter of the positioning boss 23 is greater than the inner diameter of the second flange 2, facilitating the cooperation between the clamping tooling and the end face of the second flange 2 inside the positioning boss 23.

[0027] A three-way ball valve flange forging that is easy to process according to the present utility model, by arranging a first positioning groove 14 and a second positioning groove 22 on the outer peripheral surfaces of the first flange 1 and the second flange 2 to assist the drill bit in positioning, improving the drilling position accuracy and the stability of the drilling operation; and the first positioning groove 14 and the second positioning groove 22 are arranged on the outer peripheral surface without affecting the flange forging; in addition, by arranging the sealing ring groove 13, the sealing performance of the connection between the flange forging and the valve body is improved, and by arranging the limiting hole 11, a dual effect is achieved, that is, improving the stability of the clamping tooling clamping and the reliability of the sealing ring installation.

[0028] For those skilled in the art, according to the technical solutions and concepts described above, various corresponding changes and deformations can be made, and all these changes and deformations should fall within the protection scope of the claims of the present utility model.

Claims

1. A three-way ball valve flange forging that is easy to process, characterized in that: It includes a first flange (1) and a second flange (2) arranged coaxially. The first flange (1) and the second flange (2) are fixedly connected by a connecting pipe (3). A plurality of first connecting holes (12) are circumferentially and uniformly arranged on the first flange (1). A plurality of second connecting holes (21) are circumferentially and uniformly arranged on the second flange (2). A plurality of first positioning grooves (14) and a plurality of second positioning grooves (22) are respectively arranged on the outer circumferential surfaces of the first flange (1) and the second flange (2). The plurality of first positioning grooves (14) and the plurality of first connecting holes (12) are respectively distributed in one-to-one correspondence. The plurality of second positioning grooves (22) and the plurality of second connecting holes (21) are respectively distributed in one-to-one correspondence. A sealing ring groove (13) and a limiting hole (11) are formed on the end face of the first flange (1). One side of the limiting hole (11) is communicated with the sealing ring groove (13).

2. The three-way ball valve flange forging that is easy to process according to claim 1, wherein: The central axis of the corresponding first connecting hole (12) coincides with the projection of the central axis of the second connecting hole (21) on the same horizontal plane along the radial direction of the first flange (1).

3. A three-way ball valve flange forging that is easy to process according to claim 1, characterized in that: The cross-section of the sealing ring groove (13) is a stepped structure, including a first stepped groove (131) and a second stepped groove (132) that are communicated with each other. The cross-sections of the first stepped groove (131) and the second stepped groove (132) are both right trapezoidal structures, and the small end of the right trapezoidal structure is located at the end close to the connecting pipe (3), and the large end is located at the end far from the connecting pipe (3).

4. A three-way ball valve flange forging that is easy to process according to claim 3, characterized in that: The limiting hole (11) is communicated with the sealing ring groove (13) through a connecting groove (15), and the hole depth of the limiting hole (11) is greater than the groove depth of the connecting groove (15).

5. A three-way ball valve flange forging that is easy to process according to claim 2, characterized in that: The central axis of the corresponding first positioning groove (14) coincides with the projection of the central axis of the second positioning groove (22) on the same horizontal plane along the radial direction of the first flange (1).

6. The forging of three-way ball valve flange that is easy to process according to claim 5, wherein: The first positioning groove (14) and the second positioning groove (22) are both arranged along the axial direction of the connecting pipe (3). The first positioning groove (14) penetrates through the two end faces of the first flange (1). The second positioning groove (22) penetrates through the two end faces of the second flange (2).

7. A three-way ball valve flange forging that is easy to process according to claim 1, characterized in that: A positioning boss (23) is arranged on the end face of the second flange (2). The cross-section of the positioning boss (23) is an isosceles trapezoidal structure, and the inner diameter of the positioning boss (23) is greater than the inner diameter of the second flange (2).

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