Leak-proof full-bore flange ball valve

Abstract

The utility model discloses a leakproof full-bore flange ball valve in the technical field of valve components, which comprises two groups of flange plate bodies, the two groups of flange plate bodies are symmetrically arranged left and right, a ball valve pipe body is transversely arranged between the two groups of flange plate bodies, and a plurality of groups of fixing screws are transversely arranged between two ends of the ball valve pipe body and the two groups of flange plate bodies. According to the ball valve, the sealing ball body is arranged in the middle of the ball valve inner valve rod, the phenomenon of abrasion between the ball valve inner valve rod and a sealing sleeve in the rotating process is reduced by means of the spherical curved surface structure of the sealing ball body, and therefore the sealing effect of the ball valve inner valve rod is improved, and the service life of the ball valve is prolonged. Even if the space between the sealing ball body and the sealing sleeve is indirect due to abrasion, the sealing sleeve is provided with the sealing gland for sealing again, and through the arrangement of the two sealing pieces, the sealing performance between the valve rod in the ball valve and the ball valve pipe body can be improved, and the leakage phenomenon of the ball valve in the using process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve components, in particular to a leakage-proof full-diameter flange ball valve. Background Art

[0002] A ball valve is a valve in which the opening and closing element (the ball) is driven by a valve stem and rotates about its axis. It can also be used for fluid regulation and control. The hard-sealed V-shaped ball valve, with its V-shaped core and carbide-clad metal seat, provides strong shear forces, making it particularly suitable for media containing fibers and fine solid particles. Multi-way ball valves, on the other hand, not only flexibly control the confluence, diversion, and direction of media in pipelines, but also allow any channel to be closed while connecting the other two. This type of valve should generally be installed horizontally in pipelines. Ball valves are categorized by actuation method as pneumatic, electric, and manual.

[0003] The connection between the inner valve stem and the valve pipe of the existing ball valve is usually sealed only by a gland. During use, the inner valve stem rotates and a gap is gradually generated between the stem and the gland due to wear, which leads to leakage. Based on this, the utility model designs a leakage-proof full-diameter flange ball valve to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage-proof full-diameter flange ball valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a leak-proof full-diameter flange ball valve, comprising two sets of flange bodies, and the two sets of flange bodies are symmetrically arranged, a ball valve tube body is arranged horizontally between the two sets of flange bodies, and multiple sets of fixing screws are installed horizontally between the two ends of the ball valve tube body and the two sets of flange bodies, the inner cavity of the ball valve tube body is installed with a ball valve body, the top of the ball valve body is vertically installed with an inner valve stem of the ball valve, and the top of the inner valve stem of the ball valve passes through the top of the ball valve tube body, the outer wall of the inner valve stem of the ball valve is sleeved with a sealing sleeve with a wing plate, and the bottom end of the sealing sleeve is connected to the top of the ball valve tube body. A sealing ball is provided in the middle of the inner valve stem of the ball valve through a sealing thread connection, and the sealing ball is installed in the inner cavity of the sealing sleeve. A sealing gland with a wing plate is installed on the top of the sealing sleeve through a sealing thread, and the sealing gland is sleeved on the outer wall of the inner valve stem of the ball valve. A plurality of sets of fixing bolts are vertically installed between the wing plate of the sealing gland and the wing plate of the sealing sleeve, and the bottom end of the fixing bolt is connected to the top of the ball valve body through a thread. A reinforcing pull plate is symmetrically installed between the top end of the fixing bolt and the upper fixing screw about the inner valve stem of the ball valve, and the top end of the inner valve stem of the ball valve is horizontally installed with the outer valve stem of the ball valve through a nut.

[0006] Preferably, a stepped slot is provided at the connecting end of the flange body and the ball valve body, and a rubber sealing ring is installed at the connection between the stepped slot and the ball valve body. The stepped slot and the side wall of the ball valve body are both provided with fixing screw holes that cooperate with the fixing screws.

[0007] Preferably, the top of the ball valve tube body is provided with a positioning screw hole that matches the bottom end of the sealing sleeve, and the top of the ball valve tube body is provided with multiple groups of connecting screw holes that match the bottom ends of multiple groups of fixing bolts, and the multiple groups of connecting screw holes are all around the positioning screw hole.

[0008] Preferably, an arc-shaped groove is provided at the connecting end between the flange body and the ball valve body, and the inner cavity side wall of the arc-shaped groove contacts the outer wall of the ball valve body.

[0009] Preferably, an assembly screw hole that matches with the valve stem inside the ball valve is provided at the top of the ball valve body, and an assembly screw that matches with the assembly screw hole is provided at the bottom end of the valve stem inside the ball valve.

[0010] Preferably, the inner cavity of the sealing sleeve is provided with a spherical groove matching the sealing ball, and sealing gaskets are installed at the connection between the valve stem and the sealing sleeve in the ball valve and at the connection between the valve stem and the sealing cover in the ball valve.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a sealing ball in the middle of the valve stem inside the ball valve, and utilizes the spherical curved surface structure of the sealing ball to reduce the wear between the sealing ball and the sealing sleeve during rotation. Even if there is indirect wear between the sealing ball and the sealing sleeve, a re-sealing sealing cover is provided on the sealing sleeve. Through the provision of two sealing components, the sealing between the valve stem inside the ball valve and the ball valve body can be improved, and the leakage of the ball valve during use can be reduced.

[0012] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is an enlarged view of part A of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0017] 1-flange body, 2-ball valve body, 3-fixing screws, 4-ball valve body, 5-inner valve stem of ball valve, 6-sealing sleeve, 7-sealing ball, 8-sealing cover, 9-fixing bolts, 10-reinforcement pull plate, 11-outer valve stem of ball valve. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-2 The utility model provides a technical solution: a leak-proof full-diameter flange ball valve, comprising two sets of flange bodies 1, and the two sets of flange bodies 1 are symmetrically arranged, a ball valve body 2 is transversely arranged between the two sets of flange bodies 1, and multiple sets of fixing screws 3 are transversely installed between the two ends of the ball valve body 2 and the two sets of flange bodies 1. The connecting end of the flange body 1 and the ball valve body 2 is provided with a stepped card groove to facilitate the card connection and installation between the ball valve body 2 and the flange body 1, and a rubber sealing ring is installed at the connection between the stepped card groove and the ball valve body 2 to increase the sealing performance of the connection between the ball valve body 2 and the flange body 1;

[0020] The stepped groove and the side wall of the ball valve body 2 are both provided with fixing screw holes that match the fixing screws 3. The ball valve body 4 is installed in the inner cavity of the ball valve body 2. The connecting end of the flange body 1 and the ball valve body 4 is provided with an arc-shaped groove, and the inner cavity side wall of the arc-shaped groove contacts the outer wall of the ball valve body 4, so that the ball valve body 4 can be clamped and fixed in the inner cavity of the two sets of flange bodies 1 and the ball valve body 2;

[0021] The top of the ball valve body 4 is vertically installed with the ball valve inner valve stem 5, and the top of the ball valve inner valve stem 5 passes through the top of the ball valve tube 2. The top of the ball valve body 4 is provided with an assembly screw hole that matches the ball valve inner valve stem 5, and the bottom of the ball valve inner valve stem 5 is provided with an assembly screw that matches the assembly screw hole, which facilitates the installation and disassembly between the ball valve body 4 and the ball valve inner valve stem 5;

[0022] The outer wall of the valve stem 5 in the ball valve is sleeved with a sealing sleeve 6 with a wing plate, and the bottom end of the sealing sleeve 6 is connected to the top of the ball valve body 2 through a sealing thread. A sealing ball 7 is provided in the middle of the valve stem 5 in the ball valve, and the sealing ball 7 is installed in the inner cavity of the sealing sleeve 6. A sealing gland 8 with a wing plate is installed on the top of the sealing sleeve 6 through a sealing thread, and the sealing gland 8 is sleeved on the outer wall of the valve stem 5 in the ball valve. The inner cavity of the sealing sleeve 6 is provided with a spherical groove that matches the sealing ball 7, and the valve stem 5 in the ball valve and the sealing sleeve are connected. 6 and the connection between the valve stem 5 in the ball valve and the sealing gland 8 are both installed with sealing gaskets. By arranging a sealing ball 7 in the middle of the valve stem 5 in the ball valve, the spherical curved surface structure of the sealing ball 7 is utilized to reduce the wear between the sealing sleeve 6 and the sealing sleeve 6 during the rotation process. Even if there is indirect wear between the sealing ball 7 and the sealing sleeve 6, a sealing gland 8 for resealing is provided on the sealing sleeve 6. By setting two sealing components, the sealing performance between the valve stem 5 in the ball valve and the ball valve body 2 can be improved.

[0023] Multiple groups of fixing bolts 9 are vertically installed between the wing plates of the sealing gland 8 and the wing plates of the sealing sleeve 6, and the bottom ends of the fixing bolts 9 are connected to the top of the ball valve body 2 by threads. The top of the ball valve body 2 is provided with positioning screw holes that match the bottom ends of the sealing sleeve 6. The top of the ball valve body 2 is provided with multiple groups of connecting screw holes that match the bottom ends of the multiple groups of fixing bolts 9, and the multiple groups of connecting screw holes are all around the positioning screw holes, which facilitates the connection and fixation between the ball valve body 2 and the flange body 1 by fixing screws 3, as well as the connection and fixation between the sealing sleeve 6 and the sealing gland 8 and the ball valve body 2 by fixing bolts 9. A reinforcement pull plate 10 is symmetrically installed between the top end of the fixing bolt 9 and the upper side fixing screw 3 about the inner valve stem 5 of the ball valve to improve the structural stability between the sealing sleeve 6 and the sealing gland 8 and the ball valve body 2. The top end of the inner valve stem 5 of the ball valve is horizontally mounted with the outer valve stem 11 of the ball valve through a nut.

[0024] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0025] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A leak-proof full-diameter flange ball valve, comprising two sets of flange bodies (1), wherein the two sets of flange bodies (1) are arranged symmetrically on the left and right, and characterized in that: A ball valve body (2) is horizontally arranged between the two groups of flange bodies (1), and multiple groups of fixing screws (3) are horizontally installed between the two ends of the ball valve body (2) and the two groups of flange bodies (1). A ball valve body (4) is installed in the inner cavity of the ball valve body (2), and a ball valve inner stem (5) is vertically installed on the top of the ball valve body (4), and the top of the ball valve inner stem (5) passes through the top of the ball valve body (2). The outer wall of the ball valve inner stem (5) is sleeved with a sealing sleeve (6) with a wing plate, and the bottom end of the sealing sleeve (6) is connected to the top of the ball valve body (2) through a sealing thread. A sealing ball (7) is arranged in the middle of the ball valve inner stem (5), and the sealing The sphere (7) is installed in the inner cavity of the sealing sleeve (6), and a sealing cover (8) with a wing plate is installed on the top of the sealing sleeve (6) through a sealing thread, and the sealing cover (8) is sleeved on the outer wall of the inner valve stem (5) of the ball valve, and multiple groups of fixing bolts (9) are vertically installed between the wing plate of the sealing cover (8) and the wing plate of the sealing sleeve (6), and the bottom end of the fixing bolt (9) is connected to the top of the ball valve body (2) through a thread, and a reinforcement pull plate (10) is symmetrically installed between the top of the fixing bolt (9) and the upper fixing screw (3) about the inner valve stem (5) of the ball valve, and the top of the inner valve stem (5) of the ball valve is horizontally installed with the outer valve stem (11) of the ball valve through a nut.

2. The anti-leakage full-diameter flange ball valve according to claim 1, characterized in that: The connecting end of the flange body (1) and the ball valve body (2) is provided with a stepped slot, and a rubber sealing ring is installed at the connection between the stepped slot and the ball valve body (2). The side wall of the stepped slot and the ball valve body (2) are both provided with fixing screw holes that match the fixing screws (3).

3. The anti-leakage full-diameter flange ball valve according to claim 1, characterized in that: The top of the ball valve tube body (2) is provided with a positioning screw hole that matches the bottom end of the sealing sleeve (6), and the top of the ball valve tube body (2) is provided with multiple groups of connecting screw holes that match the bottom ends of multiple groups of fixing bolts (9), and the multiple groups of connecting screw holes are all located around the positioning screw hole.

4. The anti-leakage full-diameter flange ball valve according to claim 1, characterized in that: An arc-shaped groove is provided at the connection end between the flange body (1) and the ball valve body (4), and the inner cavity side wall of the arc-shaped groove contacts the outer wall of the ball valve body (4).

5. The anti-leakage full-bore flange ball valve according to claim 1, characterized in that: The top of the ball valve body (4) is provided with an assembly screw hole that matches the valve stem (5) inside the ball valve, and the bottom end of the valve stem (5) inside the ball valve is provided with an assembly screw that matches the assembly screw hole.

6. The anti-leakage full-bore flange ball valve according to claim 1, characterized in that: The inner cavity of the sealing sleeve (6) is provided with a spherical groove matched with the sealing ball (7), and sealing gaskets are installed at the connection between the valve stem (5) and the sealing sleeve (6) in the ball valve and at the connection between the valve stem (5) and the sealing gland (8) in the ball valve.

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