Ball valve with limiting function

Abstract

The utility model discloses a ball valve with a limiting function, which comprises a valve body, connecting pipes are arranged at two ends of the valve body, a sealing mechanism is arranged at the upper end of the valve body, a valve rod sleeve is arranged on the sealing mechanism, a valve rod is arranged on the valve rod sleeve, and a rotating block is arranged on the valve rod. A first limiting block and a second limiting block are arranged on the upper surface of the valve rod sleeve, and the rotating block is arranged between the first limiting block and the second limiting block. The utility model has the advantages that the first limiting block and the second limiting block are arranged on the valve rod sleeve and are matched with the rotating block, so that the valve rod can accurately reach a full-open or full-closed position during rotation; therefore, the problem that the valve cannot be completely closed or opened due to the fact that a relative movement space exists between the valve rod and the valve rod sleeve is solved. By means of the design, leakage of media in the pipeline is effectively reduced, and safety and reliability of the pipeline are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to a ball valve with a limiting function. Background Art

[0002] In my country, ball valves are widely used in industries such as oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal services, and steel, playing a vital role in the national economy. Ball valves are primarily used in pipelines to cut off, distribute, and change the flow direction of media. They can achieve a tight seal with just a 90-degree rotation and minimal torque.

[0003] At present, there is relative movable space between the valve stem and the valve stem sleeve of the ball valve in the prior art, which causes the valve to be unable to be fully closed or fully opened, so that the medium in the pipeline leaks, thereby affecting the safety of the pipeline.

[0004] Therefore, it is necessary to provide a ball valve with a limiting function to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a ball valve with a limit function to solve the technical problem that there is relative movable space between the valve stem and the valve stem sleeve of the ball valve, which causes the valve to be unable to be fully closed or fully opened, resulting in leakage of the medium in the pipeline, thereby affecting the safety of the pipeline.

[0006] In order to solve the above technical problems, the utility model provides a ball valve with a limiting function, including: a valve body, connecting pipes are provided at both ends of the valve body, a sealing mechanism is provided at the upper end of the valve body, a valve stem sleeve is provided on the sealing mechanism, a valve stem is provided on the valve stem sleeve, a rotating block is provided on the valve stem, a first limiting block and a second limiting block are provided on the upper surface of the valve stem sleeve, and the rotating block is arranged between the first limiting block and the second limiting block.

[0007] As a further explanation, the angle a between the extension lines of the first limiting block and the second limiting block is 90°, and the rotating block, the first limiting block and the second limiting block are on the same horizontal plane.

[0008] As a further explanation, a ball is provided in the valve body, and the valve stem passes through the valve stem sleeve and the sealing mechanism and is fixedly connected to the ball.

[0009] As a further explanation, a flow hole is provided on the sphere, and when the valve stem drives the rotating block to contact the second limit block, the flow hole on the sphere and the connecting pipe are in the same straight line.

[0010] As a further explanation, the left end of the connecting pipe is provided with an inlet installation port, and the right end of the connecting pipe is provided with an outlet installation port.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. By providing the first and second limit blocks on the valve stem sleeve, which cooperate with the rotating block, the valve stem can accurately reach the fully open or fully closed position during rotation, thus avoiding the problem of the valve not being able to fully close or open due to the relative space between the valve stem and the valve stem sleeve. This design effectively reduces the leakage of media in the pipeline and improves the safety and reliability of the pipeline.

[0013] 2. Reasonable structural design and close coordination between various components make valve maintenance more convenient. Once a component needs to be replaced or repaired, it can be disassembled and installed more easily.

[0014] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the preferred structure of the utility model;

[0018] Figure 2 It is a perspective structural diagram of the present utility model.

[0019] In the picture:

[0020] 1 valve body, 2 sealing mechanism, 3 valve stem sleeve, 301 first limit block, 302 second limit block, 4 valve stem, 401 rotating block, 5 connecting pipe, 6 inlet installation port, 7 outlet installation port, 8 ball, 801 flow hole.

[0021] Angle a=90° DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] Reference Figure 1-2 A ball valve with a limit function comprises: a valve body 1, connecting pipes 5 provided at both ends of the valve body 1, a sealing mechanism 2 provided at the upper end of the valve body 1, a valve stem sleeve 3 provided on the sealing mechanism 2, a valve stem 4 provided on the valve stem sleeve 3, a rotating block 401 provided on the valve stem 4, a first limit block 301 and a second limit block 302 provided on the upper surface of the valve stem sleeve 3, and the rotating block 401 provided between the first limit block 301 and the second limit block 302. By providing the first limit block 301 and the second limit block 302 on the valve stem sleeve 3 and cooperating with the rotating block 401 on the valve stem 4, the rotation angle of the valve stem 4 is effectively limited, ensuring that the ball valve can be fully closed or fully opened, reducing the shaking and deviation of the valve stem 4 during rotation, and improving the overall stability and reliability of the ball valve.

[0024] like Figure 2 As shown, the angle a between the extension lines of the first stopper 301 and the second stopper 302 is 90°, and the rotating block 401, the first stopper 301, and the second stopper 302 are on the same horizontal plane. This allows the valve stem 4 to accurately stop between the two stoppers during rotation, thereby ensuring accurate opening and closing of the ball valve. Operators can complete the ball valve opening and closing operations more quickly, improving work efficiency.

[0025] A ball 8 is provided in the valve body 1, and the valve stem 4 passes through the valve stem sleeve 3 and the sealing mechanism 2 and is fixedly connected to the ball 8. When the valve stem 4 rotates, it can drive the ball 8 to rotate synchronously, thereby changing the flow direction of the medium or achieving a shut-off function.

[0026] like Figure 2 As shown, the ball 8 is provided with a flow hole 801. When the valve stem 4 drives the rotating block 401 to contact the second stop block 302, the flow hole 801 on the ball 8 and the connecting pipe 5 are aligned. By rotating the ball 8 to change the relative position of the flow hole 801 and the connecting pipe 5, the flow rate of the medium can be precisely controlled. When the flow hole 801 on the ball 8 is aligned with the connecting pipe 5, the medium can pass through the ball valve smoothly, reducing flow resistance and energy loss.

[0027] The left end of the connecting pipe 5 is provided with an inlet installation port 6, and the right end of the connecting pipe 5 is provided with an outlet installation port 7. This makes it easy for the connecting pipe 5 to be connected and installed with other pipes or equipment, and is clearer for subsequent maintenance.

[0028] The various components selected in this application (parts without specific structure) are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals.

[0029] known or obtained by routine experimental methods.

[0030] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0031] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0032] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A ball valve with a limit function, characterized in that: include: A valve body (1), wherein connecting pipes (5) are provided at both ends of the valve body (1), a sealing mechanism (2) is provided at the upper end of the valve body (1), a valve stem sleeve (3) is provided on the sealing mechanism (2), a valve stem (4) is provided on the valve stem sleeve (3), a rotating block (401) is provided on the valve stem (4), a first limit block (301) and a second limit block (302) are provided on the upper surface of the valve stem sleeve (3), and the rotating block (401) is arranged between the first limit block (301) and the second limit block (302).

2. A ball valve with a limit function according to claim 1, characterized in that: The angle a between the extension lines of the first limiting block (301) and the second limiting block (302) is 90°, and the rotating block (401), the first limiting block (301) and the second limiting block (302) are on the same horizontal plane.

3. A ball valve with a limit function according to claim 1, characterized in that: A sphere (8) is provided in the valve body (1), and the valve stem (4) passes through the valve stem sleeve (3) and the sealing mechanism (2) and is fixedly connected to the sphere (8).

4. A ball valve with a limit function as claimed in claim 3, characterized in that: The sphere (8) is provided with a flow hole (801), and when the valve stem (4) drives the rotating block (401) to contact the second limit block (302), the flow hole (801) on the sphere (8) and the connecting pipe (5) are in the same straight line.

5. The ball valve with a position limiting function according to claim 1, characterized in that: The left end of the connecting pipe (5) is provided with an inlet installation opening (6), and the right end of the connecting pipe (5) is provided with an outlet installation opening (7).

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