Flange connection ball valve body

Abstract

The utility model relates to a flange connection ball valve body, which belongs to the technical field of ball valves, and comprises a shell, a valve rod sealing sleeve, a rotary valve rod and a ball body, a valve rod sealing sleeve is installed on the shell, the rotary valve rod is rotationally sealed in the valve rod sealing sleeve, and a ball rotating relative to the bottom wall of the shell is installed at the other end of the rotary valve rod. A through hole for discharging liquid is formed in the ball body; the shell is provided with a movable sealing assembly capable of sealing the ball in a movable mode. The movable sealing assembly is provided with an extension butt-joint assembly which can be used for adjusting the butt-joint connection pipeline in an extension mode. According to the valve body of the flange connection ball valve, a butt joint pipeline is connected through the arranged stretching butt joint assembly, meanwhile, the movable sealing assembly is driven by matching stretching of the stretching butt joint assembly by adjusting the adjusting assembly, the gap between the movable sealing assembly and the ball body is movably adjusted, the sealing effect between the movable sealing assembly and the ball body is guaranteed, and the liquid leakage phenomenon is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field, concretely is a flange connection ball valve valve body. BACKGROUND

[0002] Ball valve, open and close (ball) by the stem drive, and rotate around the ball valve axis movement valve, also can be used for fluid control and regulation, wherein hard sealing V type ball valve its V type ball core and the metal valve seat of hardfacing hard alloy between has very strong shearing force, especially suitable for containing medium such as fibre, small solid particle, and multi-pass ball valve not only can be flexible control medium's confluence, shunt, and flow direction's switching on pipeline, simultaneously also can close any channel and make another two channels connect, this kind of valve generally should be installed horizontally in pipeline, ball valve is divided into: pneumatic ball valve, electric ball valve, hand-operated ball valve according to drive mode.

[0003] Among them, the ball of ball valve controls the size of flow by the rotation of the valve stem to control the size of the opening of the ball, the valve body is usually provided with a valve seat sealing structure and the ball is tightly attached to ensure the sealing between the valve body and the ball to avoid liquid leakage, and the rotation of the ball in use will inevitably cause wear of the sealing structure, so that a gap will appear and liquid will leak, therefore, the present application designs a flange connection ball valve valve body that can adjust and improve the sealing effect with the ball to solve this prior art defect. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a flange connection ball valve valve body, which has the advantages of adjustable sealing effect with the ball.

[0005] To achieve the above object, the utility model provides the following technical scheme: a flange connection ball valve valve body, which comprises a shell, a valve rod sealing sleeve, a rotating valve rod and a ball;

[0006] The shell is provided with a valve rod sealing sleeve, the rotating valve rod is rotatably sealed in the valve rod sealing sleeve, and the other end of the rotating valve rod is provided with a ball rotatable with the bottom wall of the shell;

[0007] The ball is provided with a through hole for discharging liquid;

[0008] The shell is provided with a movable sealing assembly that can move to seal the ball;

[0009] The movable sealing assembly is provided with an extension docking assembly that can be extended to adjust and dock with the pipeline;

[0010] The extension docking assembly is provided with an adjusting assembly that can drive the movable sealing assembly to move to ensure the close sealing effect of the movable sealing assembly on the ball.

[0011] As a preferred technical scheme of the utility model, the mobile sealing assembly comprises a sealing seat installed at the opening of the shell, the inner side of the sealing seat is communicated with a flexible hose one, the other end of the flexible hose one is communicated with a sealing ring seat which is attached to the outside of the ball and located outside the through hole.

[0012] The above technical scheme facilitates the movement adjustment of the sealing seat and the sealing gap of the ball.

[0013] As a preferred technical scheme of the utility model, the extension docking assembly comprises a straight pipe communicated with the other side of the sealing seat, the other end of the straight pipe is communicated with a flexible hose two, the other end of the flexible hose two is communicated with a connecting seat, a plurality of connecting rods are installed between the sealing ring seat and the connecting seat.

[0014] The connecting seat is provided with an extension docking piece of the docking pipeline.

[0015] The above technical scheme facilitates the synchronous extension adjustment of the extension docking assembly when the sealing seat is moved and adjusted.

[0016] As a preferred technical scheme of the utility model, the extension docking piece comprises a flexible hose three communicated with the other side of the connecting seat, the other end of the flexible hose three is communicated with a connecting flange.

[0017] The above technical scheme facilitates the docking connection of the connecting flange to the pipeline through the fastening screw during the movement adjustment.

[0018] As a preferred technical scheme of the utility model, the connecting rod is annularly and equidistantly distributed, and the sealing ring seat is provided with an opening.

[0019] The above technical scheme facilitates the discharge of the liquid through the opening of the sealing ring seat when the ball is opened.

[0020] As a preferred technical scheme of the utility model, the adjustment assembly comprises a threaded groove opened on the left and right sides of the shell, a rotating ring is threadedly connected in the threaded groove, a limiting annular groove is arranged on the outside of the rotating ring, and a plurality of traction rods connected with the connecting seat are slidably arranged in the limiting annular groove.

[0021] The above technical scheme facilitates the movement of the sealing ring seat.

[0022] As a preferred technical scheme of the utility model, the traction rod is annularly and equidistantly distributed, and the traction rod and the limiting annular groove are not separated from each other.

[0023] The above technical scheme ensures that the traction rod is moved and rotated in the limiting annular groove when the rotating ring is screwed in and out.

[0024] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0025] The flange connects to the ball valve body. While connecting to the connecting pipe via the set extension docking assembly, the adjustment assembly enables the extension of the extension docking assembly to drive the movable sealing assembly. The movement of the movable sealing assembly and the ball body is adjusted to ensure the sealing effect and prevent leakage. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present utility model;

[0027] Figure 2 This is a side view of the present invention;

[0028] Figure 3 This utility model Figure 2 Sectional view at point AA

[0029] Figure 4 This is a sectional perspective view of the present invention.

[0030] In the diagram: 1. Housing; 2. Valve stem sealing sleeve; 3. Rotary valve stem; 4. Ball; 5. Telescopic hose one; 6. Sealing seat; 7. Straight pipe; 8. Telescopic hose two; 9. Connecting seat; 10. Connecting rod; 11. Threaded groove; 12. Rotating ring; 13. Limiting annular groove; 14. Traction rod; 15. Telescopic hose three; 16. Connecting flange; 17. Sealing ring seat. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1 to 3 The valve body of a flange-connected ball valve in this embodiment includes a housing 1, a valve stem sealing sleeve 2, a rotating valve stem 3, and a ball 4.

[0033] A valve stem sealing sleeve 2 is installed and fixed on the housing 1. The valve stem sealing sleeve 2 contains the rotating valve stem 3 for rotatable sealing, which improves the anti-leakage effect. A ball 4 that rotates circumferentially with the bottom wall of the housing 1 is installed and fixed on the other end of the rotating valve stem 3.

[0034] The bottom wall of the housing 1 is embedded with a rotating seat that rotates circumferentially with the sphere 4.

[0035] The sphere 4 is provided with a through hole for discharging liquid.

[0036] The rotation of the sphere 4 changes the diameter of the drain hole in the through hole, thereby controlling the flow rate of the discharged liquid.

[0037] In this embodiment, the housing 1 is provided with a movable sealing assembly that can seal the sphere 4.

[0038] It should be noted that the movable sealing assembly includes a sealing seat 6 connected to the openings at both ends of the housing 1. The inner side of the sealing seat 6 is connected to a telescopic hose 5, and the other end of the telescopic hose 5 is connected to a sealing ring seat 17 that is attached to the outside of the ball 4 and located outside the through hole.

[0039] The mating surface of the sealing ring seat 17 and the ball 4 matches the surface curvature of the ball 4, ensuring a tight seal.

[0040] In this embodiment, the movable sealing assembly is provided with an extendable and adjustable docking assembly for connecting pipes.

[0041] It should be noted that the extension docking assembly includes a straight tube 7 connected to the other side of the sealing seat 6, the other end of the straight tube 7 is connected to a telescopic hose 8, the other end of the telescopic hose 8 is connected to a connecting seat 9, and a plurality of connecting rods 10 are installed and fixed between the sealing ring seat 17 and the connecting seat 9.

[0042] The connecting seat 9 is equipped with an extension docking component for docking pipes.

[0043] The extension connector includes a telescopic hose 15 connected to the other side of the connector 9, and the other end of the telescopic hose 15 is connected to a connecting flange 16.

[0044] The connecting rods 10 are distributed in a ring at equal intervals, and the sealing ring seat 17 is provided with an opening.

[0045] Please see Figures 3 to 4 In this embodiment, the extension docking assembly is provided with an adjustment component that moves the movable sealing assembly by adjustment, thereby ensuring the sealing effect of the movable sealing assembly on the sphere 4.

[0046] It should be noted that the adjustment component includes threaded grooves 11 on the left and right sides of the housing 1. A rotating ring 12 is threadedly connected in the threaded grooves 11. A limiting annular groove 13 is formed on the outside of the rotating ring 12. A plurality of traction rods 14 connected to the connecting seat 9 slide in the limiting annular groove 13.

[0047] The traction rods 14 are distributed in a ring at equal intervals, and the traction rods 14 and the limiting annular grooves 13 are inseparable from each other.

[0048] In this application, the first telescopic hose 5, the sealing seat 6, the straight pipe 7, the second telescopic hose 8, the connecting seat 9, the third telescopic hose 15, and the connecting flange 16 are all hollow cylinders.

[0049] The working principle of the above embodiments is as follows:

[0050] In use, the valve body is connected to the flange of the connecting pipe by passing the fastening screw through the flange hole on the connecting flange 16, so that the entire valve body is connected to the pipe. When the rotating valve stem 3 drives the ball 4 to open and close and contact the sealing ring seat 17, causing the sealing ring seat 17 to wear and not achieve a good sealing effect, the rotating ring 12 is rotated outside the thread groove 11 and the thread is screwed in, which simultaneously drives the traction rod 14 to move and limit the rotation within the limiting annular groove 13.

[0051] When the traction rod 14 moves, it drives the connecting seat 9 to move, which in turn drives the connecting rod 10 to move, causing the connecting rod 10 to move the sealing ring seat 17 to fit tightly against the ball 4. This achieves the purpose of adjusting the gap between them, avoiding the need to disassemble and replace the sealing ring seat 17 after wear and leakage. This ensures the sealing effect while improving the service life of the sealing ring seat 17. (It should be noted that when the connecting seat 9 moves, the telescopic hose 15 and the telescopic hose 2 extend synchronously, while the telescopic hose 8 retracts.) This allows for sealing adjustment without disassembly.

Claims

1. A flanged ball valve body, comprising a housing (1), a stem sealing sleeve (2), a rotating stem (3), a ball (4), and a connecting seat (9); A valve stem sealing sleeve (2) is installed on the housing (1), and the rotating valve stem (3) is rotatably sealed inside the valve stem sealing sleeve (2). A ball (4) that rotates with the bottom wall of the housing (1) is installed at the other end of the rotating valve stem (3). The sphere (4) is provided with a through hole for discharging liquid; Its features are: The housing (1) is provided with a movable sealing assembly that can seal the sphere (4); The movable sealing assembly is equipped with an extendable and adjustable docking connection assembly for connecting pipes; The extension docking assembly is provided with an adjustment component that can adjust and drive the movable sealing assembly to move, thereby ensuring the sealing effect of the movable sealing assembly on the sphere (4). The adjustment assembly includes threaded grooves (11) on the left and right sides of the housing (1). A rotating ring (12) is threadedly connected in the threaded groove (11). A limiting annular groove (13) is provided on the outside of the rotating ring (12). Multiple traction rods (14) connected to the connecting seat (9) slide in the limiting annular groove (13).

2. The valve body of a flanged ball valve according to claim 1, characterized in that: The movable sealing assembly includes a sealing seat (6) installed at the openings at both ends of the housing (1). The inner side of the sealing seat (6) is connected to a telescopic hose (5), and the other end of the telescopic hose (5) is connected to a sealing ring seat (17) that is attached to the outside of the sphere (4) and located outside the through hole.

3. The valve body of a flanged ball valve according to claim 2, characterized in that: The extension docking assembly includes a straight tube (7) connected to the other side of the sealing seat (6), the other end of the straight tube (7) is connected to a telescopic hose II (8), the other end of the telescopic hose II (8) is connected to a connecting seat (9), and a plurality of connecting rods (10) are installed between the sealing ring seat (17) and the connecting seat (9). The connecting seat (9) is provided with an extension docking component for docking pipes.

4. The valve body of a flanged ball valve according to claim 3, characterized in that: The extension connector includes a telescopic hose three (15) connected to the other side of the connector (9), and the other end of the telescopic hose three (15) is connected to a connecting flange (16).

5. The valve body of a flanged ball valve according to claim 3, characterized in that: The connecting rods (10) are distributed in a ring at equal intervals, and the sealing ring seat (17) has an opening.

6. The valve body of a flanged ball valve according to claim 1, characterized in that: The traction rods (14) are distributed in a ring at equal intervals, and the traction rods (14) and the limiting annular grooves (13) are inseparable from each other.

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