Auxiliary assembling structure for ball valve

Abstract

The utility model discloses an auxiliary assembling structure of a ball valve. The auxiliary assembling structure comprises a valve cover, a valve seat and a mounting shaft, a first mounting surface is arranged at one end of the middle through hole of the valve cover, and a first mounting hole is formed in the first mounting surface; a second mounting hole corresponding to the first mounting hole is formed in the valve seat; one end of the mounting shaft is inserted into the first mounting hole, and the axis of the mounting shaft is parallel to the axis of the through hole; the mounting shaft can be inserted into the second mounting hole so that the valve seat can be attached to the outer surface of the mounting shaft to move in the axial direction of the through hole. Due to the design that the guiding process holes are additionally formed in the valve seat and the valve cover, the structure is simple, the design almost has no influence on the part cost, an existing traditional tool is not needed, lossless assembly of the valve cover assembly is achieved through the first installation hole and the second installation hole, the tool cost is reduced, the valve cover assembly is straight up and down in the installation process, and the installation efficiency is improved. The axial and radial movement of the valve seat is not hindered, and the original sealing performance of the valve is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve structure technical field, concretely relates to a ball valve auxiliary assembly structure. BACKGROUND

[0002] In the ball valve assembly process, the valve seat assembly will be first assembled into the bonnet to form a bonnet assembly, and then the assembly is assembled. During the assembly process of the bonnet assembly, it is difficult to ensure that the valve cover diameter and the valve seat diameter are on the same axis, which often causes damage to the valve seat seal during the assembly process. Especially when it comes to oil and grease removal valve and double-piston seal ring seal valve assembly, the probability of damage to the seal will increase several times.

[0003] Under the prior art, the method for solving such problems is usually to use nylon guide tool assembly. The valve seat channel and the valve cover channel are kept on the same axis by the nylon tool, and the guide angle reserved on the valve cover is matched to realize non-destructive assembly. This assembly method causes the guide tool to be diverse due to the diversity of the valve diameter, and the tool cost is high. UTILITY MODEL CONTENTS

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the prior art, that is, the method for solving such problems is usually to use nylon guide tool assembly. The valve seat channel and the valve cover channel are kept on the same axis by the nylon tool, and the guide angle reserved on the valve cover is matched to realize non-destructive assembly. This assembly method causes the guide tool to be diverse due to the diversity of the valve diameter, and the tool cost is high.

[0005] Therefore, the utility model provides a ball valve auxiliary assembly structure, which comprises:

[0006] The bonnet has a first mounting surface at one end of the middle through hole, and a first mounting hole is formed in the first mounting surface;

[0007] The valve seat has a second mounting hole corresponding to the first mounting hole;

[0008] The mounting shaft is inserted into the first mounting hole at one end, and the axis of the mounting shaft is parallel to the axis of the through hole;

[0009] Among them, the mounting shaft can be inserted into the second mounting hole to make the valve seat adhere to the outer surface of the mounting shaft and move along the axial direction of the through hole.

[0010] Optionally, the first mounting hole, the second mounting hole and the mounting shaft are provided with two, and the two first mounting holes are symmetrically arranged on the first mounting surface;

[0011] The two second mounting holes are respectively arranged on the valve seat corresponding to the two first mounting holes;

[0012] The two mounting shafts can be respectively inserted into the two first mounting holes, and the two second mounting holes can be respectively inserted into the corresponding mounting shafts.

[0013] Optionally, the ball valve auxiliary assembly structure described above may also include a spring;

[0014] The first mounting surface has a plurality of spring holes spaced apart in a ring, and the springs are installed in the spring holes.

[0015] Optionally, the distances from the center axis of the first mounting hole to the center axis of the through hole, the distances from the center axis of the second mounting hole to the center axis of the through hole, and the distances from the center axis of the spring hole to the center axis of the through hole are all equal.

[0016] The inner diameter of the spring is D;

[0017] The inner diameter of the first mounting hole and the second mounting hole is the same, which is d;

[0018] Where d < D.

[0019] Optionally, the first mounting hole described above is offset from the spring hole.

[0020] Optionally, the diameter of the central circle containing the central axes of the aforementioned spring holes is A;

[0021] The diameter of the central circle containing the two first mounting holes and the central circle containing the several second mounting holes is B;

[0022] The inner diameter of the spring is D; the inner diameters of the first mounting hole and the second mounting hole are the same, which is d;

[0023] Where B ≤ AdD.

[0024] Optionally, the diameter of the central circle containing the central axes of the aforementioned spring holes is A;

[0025] The diameter of the central circle containing the two first mounting holes and the central circle containing the several second mounting holes is B;

[0026] The inner diameter of the spring is D; the inner diameters of the first mounting hole and the second mounting hole are the same, which is d;

[0027] Where B≥A+d+D.

[0028] Optionally, the edges of the first mounting hole, the second mounting hole, and the spring hole are chamfered.

[0029] Optionally, the ball valve auxiliary assembly structure further comprises a sealing element arranged between the bonnet and the valve seat.

[0030] The technical scheme provided by the utility model has the following advantages:

[0031] 1. The ball valve auxiliary assembly structure comprises a bonnet, a valve seat and a mounting shaft, a first mounting surface is formed at one end of a through hole in the middle of the bonnet, a first mounting hole is formed in the first mounting surface, a second mounting hole is formed in the valve seat corresponding to the first mounting hole, one end of the mounting shaft is inserted into the first mounting hole, the axis of the mounting shaft is parallel to the axis of the through hole, and the mounting shaft can be inserted into the second mounting hole so that the valve seat moves along the axial direction of the through hole while adhering to the outer surface of the mounting shaft.

[0032] The structure has the following advantages: the process hole design for guiding the valve seat and the bonnet is simple in structure and has little influence on the cost of parts, the first mounting hole and the second mounting hole are used to realize non-destructive assembly of the bonnet assembly without the aid of existing traditional tooling, the tooling cost is reduced, and the axial and radial movements of the valve seat are not hindered during installation, and the original sealing performance of the valve is not affected.

[0033] 2. After installation, the center circle of the center axes of the plurality of spring holes, the center circle of the center axes of the two first mounting holes and the center circle of the center axes of the plurality of second mounting holes are all centered on the diameter of the through hole, and from the perspective of the top view, the first mounting hole and the second mounting hole are arranged between the two spring holes. The diameter of the center circle of the center axes of the plurality of spring holes is A, the diameter of the center circle of the center axes of the two first mounting holes and the center circle of the center axes of the plurality of second mounting holes is B, the inner diameter of the spring is D, and the inner diameters of the first mounting hole and the second mounting hole are the same and are d. When the diameter A of the center circle of the center axes of the plurality of spring holes is equal to the diameter B of the center circle of the center axes of the two first mounting holes and the center circle of the center axes of the plurality of second mounting holes, the process requires that the inner diameter d of the first mounting hole and the second mounting hole be less than the inner diameter D of the spring, so as to prevent the spring from falling into the second mounting hole on the valve seat when the valve seat accidentally rotates, thereby avoiding the failure of installation. In another processing process, when the valve seat and the bonnet are large enough, B≤A-d-D or B≥A+d+D, so that the distance from the first mounting hole away from the one end of the center axis of the through hole to the center axis of the through hole is less than the distance from the spring hole close to the one end of the center axis of the through hole to the center axis of the through hole, or the distance from the first mounting hole close to the one end of the center axis of the through hole to the center axis of the through hole is greater than the distance from the spring hole away from the one end of the center axis of the through hole to the center axis of the through hole. The first mounting hole and the second mounting hole are permanently misaligned with the spring hole. This can also prevent the spring from falling into the second mounting hole on the valve seat when the valve seat accidentally rotates, thereby avoiding the failure of installation. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 It is a whole structure schematic view of the ball valve auxiliary assembly structure provided in the present application.

[0036] Figure 2 It is a longitudinal sectional view of one angle of the ball valve auxiliary assembly structure provided in the present application.

[0037] Figure 3 It is a partial enlarged view of I in the ball valve auxiliary assembly structure provided in the present application. Figure 3

[0038] Figure 4 It is a longitudinal sectional view of another angle of the ball valve auxiliary assembly structure provided in the present application.

[0039] Figure 5 It is a top view of the valve cover provided in the present application.

[0040] Figure 6 It is a partial enlarged view of II in the ball valve auxiliary assembly structure provided in the present application. Figure 5

[0041] Figure 7 It is a structure schematic view of the first mounting hole provided in the present application.

[0042] Figure 8 It is a structure schematic view of the spring provided in the present application.

[0043] Explanation of reference signs:

[0044] 1 - valve cover; 11 - hole; 12 - first mounting surface; 13 - first mounting hole; 14 - spring hole;

[0045] 2 - valve seat; 21 - second mounting hole;

[0046] 3 - mounting shaft;

[0047] 4 - spring;

[0048] 5 - sealing element. Specific embodiments

[0049] ​​The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0050] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0052] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0053] Embodiment

[0054] The present embodiment provides a kind of ball valve auxiliary assembly structure, as shown in Figures 1 to 8 Including: bonnet 1, valve seat 2 and installation shaft 3.

[0055] The center of bonnet 1 is provided with through hole 11.As shown in Figures 2 to 4 The upper end of bonnet 1 close to valve seat 2 is provided with step-shaped installation platform. The upper side of installation platform close to valve seat 2 is first installation surface 12, first installation surface 12 is perpendicular to the central axis of through hole, first installation surface 12 is provided with first installation hole 13 on the left and right sides respectively with the central axis of through hole 11 as the center of symmetry, and a total of two first installation holes 13 are provided. First installation surface 12 is provided with a plurality of spring holes 14 spaced apart in annular array with the axis of through hole 11 as the center.

[0056] As shown in Figures 2 to 4As shown, the left and right sides of the valve seat 2 are provided with second mounting holes 21 which are symmetrically centered on the center axis of the through hole 11, and the two second mounting holes 21 are respectively arranged corresponding to the two first mounting holes 13.

[0057] In the top view of the valve cover 1, Figure 5 the diameter of the center circle of the center axis of the two second mounting holes 21 is equal to the diameter of the center circle of the center axis of the two first mounting holes 13, and the diameters of the holes 11 of the two first mounting holes 13 and the two second mounting holes 21 are the same.

[0058] As shown in the drawings, Figure 3 the mounting shaft 3 is a rod, and the outer diameter of the mounting shaft 3 is equal to the inner diameter of the first mounting hole 13 and the second mounting hole 21.

[0059] When it is necessary to install the valve seat 2 on the valve cover 1, as shown in the drawings, Figure 2 first, a spring 4 is placed in each spring hole 14, the bottom end of the two mounting shafts 3 is respectively inserted into the first mounting hole 13, at this time, the center axis of the two mounting shafts 3 is parallel to the center axis of the through hole 11 and is in a vertical state, the two second mounting holes 21 are respectively aligned with the two mounting shafts 3 and the valve seat 2 is moved towards the direction close to the valve cover 1 until the two mounting shafts 3 are respectively inserted into the two second mounting holes 21. At this time, the valve seat 2 is in a horizontal state, a counterweight is placed above the valve seat 2, a downward force is applied to the valve seat 2, so that the valve seat 2 adheres to the outer surface of the mounting shaft 3 and moves downward along the axial direction of the through hole 11 until the valve seat 2 is adhered and mounted on the valve cover 1 below, and the mounting shaft 3 is extracted, and the installation is completed. Under normal circumstances, the length of the spring 4 is greater than the depth of the spring hole 14, and the two ends of the spring 4 can respectively abut against the valve cover 1 and the valve seat 2, so as to provide elastic support force to the valve seat 2 and the valve cover 1 after installation.

[0060] Through the above arrangement, the process hole 11 design of the guide is increased on the valve seat 2 and the valve cover 1, the structure is simple, the design has little influence on the cost of parts, and the existing traditional tooling is not needed, the first mounting hole 13 and the second mounting hole 21 are used to realize the lossless assembly of the valve cover 1 assembly, reduce the tooling cost, and in the process of installation, it is straight up and straight down, does not hinder the axial and radial movement of the valve seat 2, and does not affect the original sealing performance of the valve.

[0061] And since each ball valve manufacturer, the spring 4 is basically a standard part, the inner diameter will not change, so only two pins are needed to assemble most of the valves, improving the adaptability of the utility model.

[0062] In this embodiment, after installation, the central circles containing the central axes of the several spring holes 14, the two first mounting holes 13, and the several second mounting holes 21 are all centered on the diameter of the through hole 11. Furthermore, from a top view, the first mounting holes 13 and the second mounting holes 21 are positioned between the two spring holes 14.

[0063] like Figures 5 to 8 As shown, the diameter of the central circle containing the central axis of several spring holes 14 is A; the diameter of the central circle containing the central axis of the two first mounting holes 13 and the central circle containing the central axis of several second mounting holes 21 is B; the inner diameter of the spring 4 is D; the inner diameter of the first mounting hole 13 and the second mounting hole 21 is the same, which is d.

[0064] When the diameter A of the central circle containing the central axes of several spring holes 14 is equal to the diameter B of the central circle containing the central axes of the two first mounting holes 13 and the central circles containing the central axes of several second mounting holes 21, the process requirement is to ensure that the inner diameter d of the first mounting hole 13 and the second mounting hole 21 is less than the inner diameter D of the spring 4; to prevent the spring 4 from falling into the second mounting hole 21 on the valve seat 2 when the valve seat 2 rotates accidentally, causing installation failure.

[0065] Another processing method, when the valve seat 2 and valve cover 1 are sufficiently large, ensures that B ≤ AdD or B ≥ A + d + D, such that the distance from the end of the first mounting hole 13 away from the central axis of the through hole 11 to the central axis of the through hole 11 is less than the distance from the end of the spring hole 14 near the central axis of the through hole 11 to the central axis of the through hole 11; or the distance from the end of the first mounting hole 13 near the central axis of the through hole 11 to the central axis of the through hole 11 is greater than the distance from the end of the spring hole 14 away from the central axis of the through hole 11 to the central axis of the through hole 11. The first mounting hole 13 and the second mounting hole 21 are permanently misaligned with the spring hole 14. This also prevents the spring 4 from falling into the second mounting hole 21 on the valve seat 2 when the valve seat 2 rotates accidentally, thus preventing installation failure.

[0066] In this embodiment, the edges of the first mounting hole 13, the second mounting hole 21, and the spring hole 14 are chamfered to facilitate the insertion of the pin and better guide it. The ball valve auxiliary assembly structure also includes a sealing element 5, which needs to be placed between the valve cover 1 and the valve seat 2 during installation to provide a seal.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A ball valve auxiliary assembly structure, characterized in that, include: A valve cover (1) has a first mounting surface (12) at one end of a through hole (11) in the middle, and a first mounting hole (13) is provided on the first mounting surface (12); A valve seat (2) is provided with a second mounting hole (21) corresponding to the first mounting hole (13); Mounting shaft (3), one end of which is inserted into the first mounting hole (13), and the axis of the mounting shaft (3) is parallel to the axis of the through hole (11); The mounting shaft (3) can be inserted into the second mounting hole (21) so that the valve seat (2) can move along the axial direction of the through hole (11) while conforming to the outer surface of the mounting shaft (3).

2. The ball valve auxiliary assembly structure according to claim 1, characterized in that, Two of each of the first mounting hole (13), the second mounting hole (21), and the mounting shaft (3) are provided, with the two first mounting holes (13) symmetrically arranged on the first mounting surface (12); Two second mounting holes (21) are respectively opened on the valve seat (2) corresponding to two first mounting holes (13); The two mounting shafts (3) can be inserted into the two first mounting holes (13) respectively, and the two second mounting holes (21) can be inserted into the corresponding mounting shafts (3) respectively.

3. The ball valve auxiliary assembly structure according to claim 2, characterized in that, The ball valve auxiliary assembly structure also includes a spring (4); A plurality of spring holes (14) are provided annularly spaced on the first mounting surface (12), and the spring (4) is installed in the spring holes (14).

4. The ball valve auxiliary assembly structure according to claim 3, characterized in that, The distance from the center axis of the first mounting hole (13) to the center axis of the through hole (11), the distance from the center axis of the second mounting hole (21) to the center axis of the through hole (11), and the distance from the center axis of the spring hole (14) to the center axis of the through hole (11) are all equal. The inner diameter of the spring (4) is D; The first mounting hole (13) and the second mounting hole (21) have the same inner diameter, which is d; Where d < D.

5. The auxiliary assembly structure for the ball valve according to claim 3, characterized in that, The first mounting hole (13) is offset from the spring hole (14).

6. The auxiliary assembly structure for the ball valve according to claim 5, characterized in that, The diameter of the central circle containing the central axis of several spring holes (14) is A; The diameter of the central circle containing the central axis of the two first mounting holes (13) and the central circle containing the central axis of the several second mounting holes (21) is B; The inner diameter of the spring (4) is D; the inner diameters of the first mounting hole (13) and the second mounting hole (21) are the same, which is d; Where B ≤ AdD.

7. The auxiliary assembly structure for the ball valve according to claim 5, characterized in that, The diameter of the central circle containing the central axis of several spring holes (14) is A; The diameter of the central circle containing the central axis of the two first mounting holes (13) and the central circle containing the central axis of the several second mounting holes (21) is B; The inner diameter of the spring (4) is D; the inner diameters of the first mounting hole (13) and the second mounting hole (21) are the same, which is d; Where B≥A+d+D.

8. The auxiliary assembly structure for the ball valve according to claim 7, characterized in that, The edges of the first mounting hole (13), the second mounting hole (21) and the spring hole (14) are chamfered.

9. The auxiliary assembly structure for the ball valve according to claim 7, characterized in that, The ball valve auxiliary assembly structure also includes a sealing element (5), which is disposed between the valve cover (1) and the valve seat (2).

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