A hard-sealed ball valve with guide rail

Abstract

The utility model discloses a hard-sealed ball valve with a guide rail, which relates to the technical field of ball valves, including a valve body, a through hole and a connecting plate, one side of the valve body is connected to a liquid inlet pipe, the other side of the valve body is connected to a liquid outlet pipe, valve seats are installed inside both sides of the valve body, a sphere is installed at the middle position inside the valve body, and a through hole is provided at the middle position of the sphere, a valve cover is installed above the valve body, a rotating rod is installed inside the valve cover at the top end of the sphere, and a hand wheel is connected to the top end of the rotating rod, and a gear is installed on the outer wall above the rotating rod. The utility model utilizes a rotating locking member and threaded engagement to move the locking member upward, and after the second reset spring is away from the locking member, the second reset spring resets the clamping rod away from the clamping groove, and then the valve cover is taken out upward, and the positioning rod is simultaneously away from the positioning hole, and then the valve cover is removed, which is convenient for inspection inside the valve body and solves the problem of inconvenient disassembly for inspection.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a hard-sealed ball valve with a guide rail. Background Art

[0002] A sealed ball valve is a spherical valve mainly used to control fluid media. Its main structure is composed of a ball, a valve stem, a valve seat, a sealing ring and a transmission mechanism. The hard-sealed ball valve is made of a special high-strength alloy steel material and has good compressive strength and corrosion resistance. The opening and closing process of the hard-sealed ball valve only requires a 90-degree rotation. The operation is simple and quick, which is conducive to quickly cutting off and connecting the fluid channel. Many ball valves do not have a structure that enhances sealing, and the valve cover is not easy to disassemble, which is inconvenient for internal maintenance. In view of this, in-depth research was conducted on the above-mentioned issues, which led to the creation of this case. Utility Model Content

[0003] The utility model aims to provide a hard-sealed ball valve with a guide rail, so as to solve the problem that the existing hard-sealed ball valve with a guide rail mentioned in the background technology has poor sealing performance and is not easy to disassemble and repair.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hard-sealed ball valve with a guide rail, comprising a valve body, a through hole and a connecting plate, one side of the valve body is connected to a liquid inlet pipe, the other side of the valve body is connected to a liquid outlet pipe, valve seats are installed inside both sides of the valve body, a sphere is installed at the middle position inside the valve body, and a through hole is provided at the middle position of the sphere, a valve cover is installed above the valve body, a rotating rod is installed on the inner side of the valve cover at the top end of the sphere, and a handwheel is connected to the top end of the rotating rod, and a gear is installed on the outer wall above the rotating rod.

[0005] Preferably, a first damper is installed on an inner wall on one side above the valve cover, and a first return spring is installed on an outer wall of the first damper, one side of the first return spring is connected to a pull plate, and one side of the pull plate is connected to a locking rod.

[0006] Preferably, inner walls at both ends of the valve seat are installed with connecting plates, and one side of the connecting plates is connected to a sealing member.

[0007] Preferably, the second dampers are evenly installed on the other side of the connecting plate, and the outer walls of the second dampers are installed with third return springs.

[0008] Preferably, positioning rods are connected to both sides of the bottom end of the valve cover, and positioning holes matching with the positioning rods are provided on both sides of the top end of the valve body.

[0009] Preferably, second return springs are installed on both side outer walls above the valve body, and clamping rods are installed on the inner sides of the second return springs, and the outer walls of the positioning rods are provided with clamping grooves matching with the clamping rods.

[0010] Preferably, a locking piece is installed on the outer wall of the valve cover, and an external thread is provided on the outer wall of the valve cover. The inner wall above the locking piece forms a threaded connection structure with the valve cover through an internal thread.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides a locking piece, a second return spring and a positioning rod. The locking piece is rotated and threadedly matched to move the locking piece upward. After the second return spring is away from the locking piece, the second return spring is reset to make the clamping rod away from the clamping groove. Then the valve cover is taken out upward, and the positioning rod is away from the positioning hole at the same time. Then the valve cover is removed, which is convenient for maintenance inside the valve body, solving the problem of inconvenient disassembly and maintenance.

[0013] The utility model provides a second damper, a third return spring and a seal, and utilizes the elasticity of the second damper and the third return spring to make the seal close to multiple corners of the outer wall of the sphere, so as to improve the sealing between the valve seat and the sphere and solve the problem of poor sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the valve body of the utility model;

[0015] Figure 2 This is a schematic diagram of the lock rod structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the locking member of the utility model;

[0017] Figure 4 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1, liquid inlet pipe; 2, valve body; 3, hand wheel; 4, rotating rod; 5, valve cover; 6, liquid outlet pipe; 7, valve seat; 8, sphere; 9, through hole; 10, gear; 11, locking rod; 12, pull plate; 13, first damper; 14, first return spring; 15, positioning rod; 16, positioning hole; 17, slot; 18, clamping rod; 19, second return spring; 20, locking piece; 21, sealing piece; 22, second damper; 23, connecting plate; 24, third return spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1: Please refer to Figure 1-Figure 4 A hard-sealed ball valve with a guide rail comprises a valve body 2, a through hole 9 and a connecting plate 23. A liquid inlet pipe 1 is connected to one side of the valve body 2, and a liquid outlet pipe 6 is connected to the other side of the valve body 2. Valve seats 7 are installed inside both sides of the valve body 2. A ball 8 is installed at the middle position inside the valve body 2, and a through hole 9 is provided at the middle position of the ball 8. A valve cover 5 is installed above the valve body 2. A rotating rod 4 is installed inside the valve cover 5 at the top end of the ball 8, and a hand wheel 3 is connected to the top end of the rotating rod 4. A gear 10 is installed on the outer wall above the rotating rod 4.

[0021] A first damper 13 is installed on the inner wall of one side above the valve cover 5, and a first return spring 14 is installed on the outer wall of the first damper 13. A pull plate 12 is connected to one side of the first return spring 14, and a lock rod 11 is connected to one side of the pull plate 12.

[0022] The inner walls of both ends of the valve seat 7 are installed with connecting plates 23, and one side of the connecting plate 23 is connected with a sealing member 21;

[0023] The second dampers 22 are evenly installed on the other side of the connecting plate 23, and the outer walls of the second dampers 22 are evenly installed with third return springs 24;

[0024] Specifically, Figure 1 and Figure 4 As shown, when this structure is used, the sealing member 21 is closely attached to multiple corners of the outer wall of the ball 8 through the elasticity of the second damper 22 and the third return spring 24, so that the sealing between the valve seat 7 and the ball 8 is better.

[0025] Embodiment 2: Both sides of the bottom end of the valve cover 5 are connected with positioning rods 15, and both sides of the top end of the valve body 2 are provided with positioning holes 16 that match with the positioning rods 15;

[0026] The outer walls on both sides above the valve body 2 are both equipped with second return springs 19, and the inner sides of the second return springs 19 are both equipped with clamping rods 18, and the outer walls of the positioning rods 15 are both equipped with clamping grooves 17 that match the clamping rods 18;

[0027] The outer wall of the valve cover 5 is provided with a locking member 20, the outer wall of the valve cover 5 is provided with an external thread, and the inner wall above the locking member 20 forms a threaded connection structure with the valve cover 5 through an internal thread;

[0028] Specifically, Figure 1 and Figure 3 As shown, when this structure is used, the locking member 20 is rotated and threaded to move the locking member 20 upward. After the second reset spring 19 is away from the locking member 20, the second reset spring 19 is reset to make the clamping rod 18 away from the clamping groove 17, and then the valve cover 5 is taken out upward, and the positioning rod 15 is away from the positioning hole 16 at the same time. Then, the valve cover 5 is removed to facilitate the inspection inside the valve body 2.

[0029] Working principle: When using this device, first move the pull plate 12 to the right to make the lock rod 11 away from the gear block of the gear 10, then rotate the hand wheel 3 to make the rotating rod 4 drive the ball 8 to rotate 90 degrees, so that the through hole 9 is aligned with the hole of the valve seat 7 to allow the liquid to circulate;

[0030] The first step to implement the innovation point:

[0031] Through the elasticity of the second damper 22 and the third return spring 24, the sealing member 21 is closely attached to multiple corners of the outer wall of the spherical body 8, so that the sealing performance between the valve seat 7 and the spherical body 8 is better.

[0032] The second innovation point implementation steps:

[0033] By rotating the locking piece 20 and engaging the threads, the locking piece 20 is moved upward. After the second reset spring 19 is away from the locking piece 20, the second reset spring 19 is reset to make the clamping rod 18 away from the clamping groove 17, and then the valve cover 5 is taken out upward, and the positioning rod 15 is away from the positioning hole 16 at the same time. Then the valve cover 5 is removed to inspect the inside of the valve body 2.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hard-sealed ball valve with a guide rail, comprising a valve body (2), a through hole (9) and a connecting plate (23), characterized in that: One side of the valve body (2) is connected to a liquid inlet pipe (1), and the other side of the valve body (2) is connected to a liquid outlet pipe (6). Valve seats (7) are installed inside both sides of the valve body (2). A ball (8) is installed at a middle position inside the valve body (2), and a through hole (9) is provided at a middle position of the ball (8). A valve cover (5) is installed above the valve body (2). A rotating rod (4) is installed on the inner side of the valve cover (5) at the top end of the ball (8), and a hand wheel (3) is connected to the top end of the rotating rod (4). A gear (10) is installed on the outer wall above the rotating rod (4).

2. A hard-sealed ball valve with guide rail according to claim 1, characterized in that: A first damper (13) is installed on an inner wall on one side above the valve cover (5), and a first return spring (14) is installed on an outer wall of the first damper (13); a pull plate (12) is connected to one side of the first return spring (14), and a locking rod (11) is connected to one side of the pull plate (12).

3. A hard-sealed ball valve with guide rail according to claim 1, characterized in that: The inner walls at both ends of the valve seat (7) are both mounted with connecting plates (23), and one side of the connecting plates (23) is connected to a sealing member (21).

4. A hard-sealed ball valve with guide rail according to claim 3, characterized in that: The other side of the connecting plate (23) is evenly mounted with a second damper (22), and the outer wall of the second damper (22) is evenly mounted with a third return spring (24).

5. The hard-sealed ball valve with guide rail according to claim 1, characterized in that: Both sides of the bottom end of the valve cover (5) are connected to positioning rods (15), and both sides of the top end of the valve body (2) are provided with positioning holes (16) that match the positioning rods (15).

6. A hard-sealed ball valve with guide rail according to claim 5, characterized in that: Second return springs (19) are installed on both side outer walls above the valve body (2), and a clamping rod (18) is installed on the inner side of the second return spring (19), and a clamping groove (17) matching with the clamping rod (18) is provided on the outer wall of the positioning rod (15).

7. The hard-sealed ball valve with guide rail according to claim 1, characterized in that: A locking piece (20) is installed on the outer wall of the valve cover (5), and an external thread is provided on the outer wall of the valve cover (5). The inner wall above the locking piece (20) forms a threaded connection structure with the valve cover (5) via an internal thread.

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